Mercurial > hg > nginx
annotate src/http/modules/ngx_http_grpc_module.c @ 7350:67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
If sending request body was not completed (u->request_body_sent is not set),
the upstream keepalive module won't save such a connection. However, it
is theoretically possible (though highly unlikely) that sending of some
control frames can be blocked after the request body was sent. The
ctx->output_blocked flag introduced to disable keepalive in such cases.
| author | Maxim Dounin <mdounin@mdounin.ru> |
|---|---|
| date | Mon, 03 Sep 2018 19:34:02 +0300 |
| parents | f6047a579ca1 |
| children | 8b68d50090e4 |
| rev | line source |
|---|---|
| 7233 | 1 |
| 2 /* | |
| 3 * Copyright (C) Maxim Dounin | |
| 4 * Copyright (C) Nginx, Inc. | |
| 5 */ | |
| 6 | |
| 7 | |
| 8 #include <ngx_config.h> | |
| 9 #include <ngx_core.h> | |
| 10 #include <ngx_http.h> | |
| 11 | |
| 12 | |
| 13 typedef struct { | |
| 14 ngx_array_t *flushes; | |
| 15 ngx_array_t *lengths; | |
| 16 ngx_array_t *values; | |
| 17 ngx_hash_t hash; | |
| 18 } ngx_http_grpc_headers_t; | |
| 19 | |
| 20 | |
| 21 typedef struct { | |
| 22 ngx_http_upstream_conf_t upstream; | |
| 23 | |
| 24 ngx_http_grpc_headers_t headers; | |
| 25 ngx_array_t *headers_source; | |
| 26 | |
| 27 ngx_str_t host; | |
| 28 ngx_uint_t host_set; | |
| 29 | |
| 30 #if (NGX_HTTP_SSL) | |
| 31 ngx_uint_t ssl; | |
| 32 ngx_uint_t ssl_protocols; | |
| 33 ngx_str_t ssl_ciphers; | |
| 34 ngx_uint_t ssl_verify_depth; | |
| 35 ngx_str_t ssl_trusted_certificate; | |
| 36 ngx_str_t ssl_crl; | |
| 37 ngx_str_t ssl_certificate; | |
| 38 ngx_str_t ssl_certificate_key; | |
| 39 ngx_array_t *ssl_passwords; | |
| 40 #endif | |
| 41 } ngx_http_grpc_loc_conf_t; | |
| 42 | |
| 43 | |
| 44 typedef enum { | |
| 45 ngx_http_grpc_st_start = 0, | |
| 46 ngx_http_grpc_st_length_2, | |
| 47 ngx_http_grpc_st_length_3, | |
| 48 ngx_http_grpc_st_type, | |
| 49 ngx_http_grpc_st_flags, | |
| 50 ngx_http_grpc_st_stream_id, | |
| 51 ngx_http_grpc_st_stream_id_2, | |
| 52 ngx_http_grpc_st_stream_id_3, | |
| 53 ngx_http_grpc_st_stream_id_4, | |
| 54 ngx_http_grpc_st_payload, | |
| 55 ngx_http_grpc_st_padding | |
| 56 } ngx_http_grpc_state_e; | |
| 57 | |
| 58 | |
| 59 typedef struct { | |
| 60 size_t init_window; | |
| 61 size_t send_window; | |
| 62 size_t recv_window; | |
| 63 ngx_uint_t last_stream_id; | |
| 64 } ngx_http_grpc_conn_t; | |
| 65 | |
| 66 | |
| 67 typedef struct { | |
| 68 ngx_http_grpc_state_e state; | |
| 69 ngx_uint_t frame_state; | |
| 70 ngx_uint_t fragment_state; | |
| 71 | |
| 72 ngx_chain_t *in; | |
| 73 ngx_chain_t *out; | |
| 74 ngx_chain_t *free; | |
| 75 ngx_chain_t *busy; | |
| 76 | |
| 77 ngx_http_grpc_conn_t *connection; | |
| 78 | |
| 79 ngx_uint_t id; | |
| 80 | |
| 81 ssize_t send_window; | |
| 82 size_t recv_window; | |
| 83 | |
| 84 size_t rest; | |
| 85 ngx_uint_t stream_id; | |
| 86 u_char type; | |
| 87 u_char flags; | |
| 88 u_char padding; | |
| 89 | |
| 90 ngx_uint_t error; | |
| 91 ngx_uint_t window_update; | |
| 92 | |
| 93 ngx_uint_t setting_id; | |
| 94 ngx_uint_t setting_value; | |
| 95 | |
| 96 u_char ping_data[8]; | |
| 97 | |
| 98 ngx_uint_t index; | |
| 99 ngx_str_t name; | |
| 100 ngx_str_t value; | |
| 101 | |
| 102 u_char *field_end; | |
| 103 size_t field_length; | |
| 104 size_t field_rest; | |
| 105 u_char field_state; | |
| 106 | |
| 107 unsigned literal:1; | |
| 108 unsigned field_huffman:1; | |
| 109 | |
| 110 unsigned header_sent:1; | |
| 111 unsigned output_closed:1; | |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
112 unsigned output_blocked:1; |
| 7233 | 113 unsigned parsing_headers:1; |
| 114 unsigned end_stream:1; | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
115 unsigned done:1; |
| 7233 | 116 unsigned status:1; |
| 117 | |
| 118 ngx_http_request_t *request; | |
| 119 } ngx_http_grpc_ctx_t; | |
| 120 | |
| 121 | |
| 122 typedef struct { | |
| 123 u_char length_0; | |
| 124 u_char length_1; | |
| 125 u_char length_2; | |
| 126 u_char type; | |
| 127 u_char flags; | |
| 128 u_char stream_id_0; | |
| 129 u_char stream_id_1; | |
| 130 u_char stream_id_2; | |
| 131 u_char stream_id_3; | |
| 132 } ngx_http_grpc_frame_t; | |
| 133 | |
| 134 | |
| 135 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
| 136 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
| 137 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
| 138 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
| 139 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
| 140 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
| 141 | |
| 142 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
| 143 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 144 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
| 145 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 146 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
| 147 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 148 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
| 149 ngx_str_t *s); | |
| 150 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
| 151 ngx_str_t *s); | |
| 152 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
| 153 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 154 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
| 155 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 156 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 157 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 158 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
| 159 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 160 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 161 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
| 162 | |
| 163 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
| 164 ngx_http_grpc_ctx_t *ctx); | |
| 165 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
| 166 ngx_http_grpc_ctx_t *ctx); | |
| 167 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 168 ngx_http_grpc_ctx_t *ctx); | |
| 169 | |
| 170 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
| 171 ngx_http_grpc_ctx_t *ctx); | |
| 172 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
| 173 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 174 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
| 175 static void ngx_http_grpc_cleanup(void *data); | |
| 176 | |
| 177 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
| 178 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
| 179 ngx_int_t rc); | |
| 180 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
181 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
182 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
183 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
184 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
| 7233 | 185 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
| 186 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
| 187 void *parent, void *child); | |
| 188 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
| 189 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
| 190 ngx_keyval_t *default_headers); | |
| 191 | |
| 192 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
| 193 void *conf); | |
| 194 | |
| 195 #if (NGX_HTTP_SSL) | |
| 196 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
| 197 ngx_command_t *cmd, void *conf); | |
| 198 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
| 199 ngx_http_grpc_loc_conf_t *glcf); | |
| 200 #endif | |
| 201 | |
| 202 | |
| 203 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
| 204 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
| 205 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
| 206 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
| 207 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
| 208 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
| 209 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
| 210 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
| 211 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
| 212 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
| 213 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
| 214 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
| 215 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
| 216 { ngx_null_string, 0 } | |
| 217 }; | |
| 218 | |
| 219 | |
| 220 #if (NGX_HTTP_SSL) | |
| 221 | |
| 222 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
| 223 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
| 224 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
| 225 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
| 226 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
| 227 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
| 228 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
| 229 { ngx_null_string, 0 } | |
| 230 }; | |
| 231 | |
| 232 #endif | |
| 233 | |
| 234 | |
| 235 static ngx_command_t ngx_http_grpc_commands[] = { | |
| 236 | |
| 237 { ngx_string("grpc_pass"), | |
| 238 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
| 239 ngx_http_grpc_pass, | |
| 240 NGX_HTTP_LOC_CONF_OFFSET, | |
| 241 0, | |
| 242 NULL }, | |
| 243 | |
| 244 { ngx_string("grpc_bind"), | |
| 245 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
| 246 ngx_http_upstream_bind_set_slot, | |
| 247 NGX_HTTP_LOC_CONF_OFFSET, | |
| 248 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
| 249 NULL }, | |
| 250 | |
| 251 { ngx_string("grpc_connect_timeout"), | |
| 252 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 253 ngx_conf_set_msec_slot, | |
| 254 NGX_HTTP_LOC_CONF_OFFSET, | |
| 255 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
| 256 NULL }, | |
| 257 | |
| 258 { ngx_string("grpc_send_timeout"), | |
| 259 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 260 ngx_conf_set_msec_slot, | |
| 261 NGX_HTTP_LOC_CONF_OFFSET, | |
| 262 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
| 263 NULL }, | |
| 264 | |
| 265 { ngx_string("grpc_intercept_errors"), | |
| 266 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 267 ngx_conf_set_flag_slot, | |
| 268 NGX_HTTP_LOC_CONF_OFFSET, | |
| 269 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
| 270 NULL }, | |
| 271 | |
| 272 { ngx_string("grpc_buffer_size"), | |
| 273 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 274 ngx_conf_set_size_slot, | |
| 275 NGX_HTTP_LOC_CONF_OFFSET, | |
| 276 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
| 277 NULL }, | |
| 278 | |
| 279 { ngx_string("grpc_read_timeout"), | |
| 280 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 281 ngx_conf_set_msec_slot, | |
| 282 NGX_HTTP_LOC_CONF_OFFSET, | |
| 283 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
| 284 NULL }, | |
| 285 | |
| 286 { ngx_string("grpc_next_upstream"), | |
| 287 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 288 ngx_conf_set_bitmask_slot, | |
| 289 NGX_HTTP_LOC_CONF_OFFSET, | |
| 290 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
| 291 &ngx_http_grpc_next_upstream_masks }, | |
| 292 | |
| 293 { ngx_string("grpc_next_upstream_tries"), | |
| 294 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 295 ngx_conf_set_num_slot, | |
| 296 NGX_HTTP_LOC_CONF_OFFSET, | |
| 297 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
| 298 NULL }, | |
| 299 | |
| 300 { ngx_string("grpc_next_upstream_timeout"), | |
| 301 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 302 ngx_conf_set_msec_slot, | |
| 303 NGX_HTTP_LOC_CONF_OFFSET, | |
| 304 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
| 305 NULL }, | |
| 306 | |
| 307 { ngx_string("grpc_set_header"), | |
| 308 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
| 309 ngx_conf_set_keyval_slot, | |
| 310 NGX_HTTP_LOC_CONF_OFFSET, | |
| 311 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
| 312 NULL }, | |
| 313 | |
| 314 { ngx_string("grpc_pass_header"), | |
| 315 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 316 ngx_conf_set_str_array_slot, | |
| 317 NGX_HTTP_LOC_CONF_OFFSET, | |
| 318 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
| 319 NULL }, | |
| 320 | |
| 321 { ngx_string("grpc_hide_header"), | |
| 322 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 323 ngx_conf_set_str_array_slot, | |
| 324 NGX_HTTP_LOC_CONF_OFFSET, | |
| 325 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
| 326 NULL }, | |
| 327 | |
| 328 { ngx_string("grpc_ignore_headers"), | |
| 329 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 330 ngx_conf_set_bitmask_slot, | |
| 331 NGX_HTTP_LOC_CONF_OFFSET, | |
| 332 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
| 333 &ngx_http_upstream_ignore_headers_masks }, | |
| 334 | |
| 335 #if (NGX_HTTP_SSL) | |
| 336 | |
| 337 { ngx_string("grpc_ssl_session_reuse"), | |
| 338 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 339 ngx_conf_set_flag_slot, | |
| 340 NGX_HTTP_LOC_CONF_OFFSET, | |
| 341 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
| 342 NULL }, | |
| 343 | |
| 344 { ngx_string("grpc_ssl_protocols"), | |
| 345 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
| 346 ngx_conf_set_bitmask_slot, | |
| 347 NGX_HTTP_LOC_CONF_OFFSET, | |
| 348 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
| 349 &ngx_http_grpc_ssl_protocols }, | |
| 350 | |
| 351 { ngx_string("grpc_ssl_ciphers"), | |
| 352 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 353 ngx_conf_set_str_slot, | |
| 354 NGX_HTTP_LOC_CONF_OFFSET, | |
| 355 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
| 356 NULL }, | |
| 357 | |
| 358 { ngx_string("grpc_ssl_name"), | |
| 359 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 360 ngx_http_set_complex_value_slot, | |
| 361 NGX_HTTP_LOC_CONF_OFFSET, | |
| 362 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
| 363 NULL }, | |
| 364 | |
| 365 { ngx_string("grpc_ssl_server_name"), | |
| 366 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 367 ngx_conf_set_flag_slot, | |
| 368 NGX_HTTP_LOC_CONF_OFFSET, | |
| 369 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
| 370 NULL }, | |
| 371 | |
| 372 { ngx_string("grpc_ssl_verify"), | |
| 373 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
| 374 ngx_conf_set_flag_slot, | |
| 375 NGX_HTTP_LOC_CONF_OFFSET, | |
| 376 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
| 377 NULL }, | |
| 378 | |
| 379 { ngx_string("grpc_ssl_verify_depth"), | |
| 380 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 381 ngx_conf_set_num_slot, | |
| 382 NGX_HTTP_LOC_CONF_OFFSET, | |
| 383 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
| 384 NULL }, | |
| 385 | |
| 386 { ngx_string("grpc_ssl_trusted_certificate"), | |
| 387 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 388 ngx_conf_set_str_slot, | |
| 389 NGX_HTTP_LOC_CONF_OFFSET, | |
| 390 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
| 391 NULL }, | |
| 392 | |
| 393 { ngx_string("grpc_ssl_crl"), | |
| 394 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 395 ngx_conf_set_str_slot, | |
| 396 NGX_HTTP_LOC_CONF_OFFSET, | |
| 397 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
| 398 NULL }, | |
| 399 | |
| 400 { ngx_string("grpc_ssl_certificate"), | |
| 401 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 402 ngx_conf_set_str_slot, | |
| 403 NGX_HTTP_LOC_CONF_OFFSET, | |
| 404 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
| 405 NULL }, | |
| 406 | |
| 407 { ngx_string("grpc_ssl_certificate_key"), | |
| 408 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 409 ngx_conf_set_str_slot, | |
| 410 NGX_HTTP_LOC_CONF_OFFSET, | |
| 411 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
| 412 NULL }, | |
| 413 | |
| 414 { ngx_string("grpc_ssl_password_file"), | |
| 415 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
| 416 ngx_http_grpc_ssl_password_file, | |
| 417 NGX_HTTP_LOC_CONF_OFFSET, | |
| 418 0, | |
| 419 NULL }, | |
| 420 | |
| 421 #endif | |
| 422 | |
| 423 ngx_null_command | |
| 424 }; | |
| 425 | |
| 426 | |
| 427 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
428 ngx_http_grpc_add_variables, /* preconfiguration */ |
| 7233 | 429 NULL, /* postconfiguration */ |
| 430 | |
| 431 NULL, /* create main configuration */ | |
| 432 NULL, /* init main configuration */ | |
| 433 | |
| 434 NULL, /* create server configuration */ | |
| 435 NULL, /* merge server configuration */ | |
| 436 | |
| 437 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
| 438 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
| 439 }; | |
| 440 | |
| 441 | |
| 442 ngx_module_t ngx_http_grpc_module = { | |
| 443 NGX_MODULE_V1, | |
| 444 &ngx_http_grpc_module_ctx, /* module context */ | |
| 445 ngx_http_grpc_commands, /* module directives */ | |
| 446 NGX_HTTP_MODULE, /* module type */ | |
| 447 NULL, /* init master */ | |
| 448 NULL, /* init module */ | |
| 449 NULL, /* init process */ | |
| 450 NULL, /* init thread */ | |
| 451 NULL, /* exit thread */ | |
| 452 NULL, /* exit process */ | |
| 453 NULL, /* exit master */ | |
| 454 NGX_MODULE_V1_PADDING | |
| 455 }; | |
| 456 | |
| 457 | |
| 458 static u_char ngx_http_grpc_connection_start[] = | |
| 459 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
| 460 | |
| 461 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
| 462 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
| 463 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
| 464 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
| 465 | |
| 466 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
| 467 "\x7f\xff\x00\x00"; | |
| 468 | |
| 469 | |
| 470 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
| 471 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
472 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
| 7233 | 473 { ngx_string("Host"), ngx_string("") }, |
| 474 { ngx_string("Connection"), ngx_string("") }, | |
| 475 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
| 476 { ngx_string("Keep-Alive"), ngx_string("") }, | |
| 477 { ngx_string("Expect"), ngx_string("") }, | |
| 478 { ngx_string("Upgrade"), ngx_string("") }, | |
| 479 { ngx_null_string, ngx_null_string } | |
| 480 }; | |
| 481 | |
| 482 | |
| 483 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
| 484 ngx_string("Date"), | |
| 485 ngx_string("Server"), | |
| 486 ngx_string("X-Accel-Expires"), | |
| 487 ngx_string("X-Accel-Redirect"), | |
| 488 ngx_string("X-Accel-Limit-Rate"), | |
| 489 ngx_string("X-Accel-Buffering"), | |
| 490 ngx_string("X-Accel-Charset"), | |
| 491 ngx_null_string | |
| 492 }; | |
| 493 | |
| 494 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
495 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
496 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
497 { ngx_string("grpc_internal_trailers"), NULL, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
498 ngx_http_grpc_internal_trailers_variable, 0, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
499 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
500 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
501 ngx_http_null_variable |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
502 }; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
503 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
504 |
| 7233 | 505 static ngx_int_t |
| 506 ngx_http_grpc_handler(ngx_http_request_t *r) | |
| 507 { | |
| 508 ngx_int_t rc; | |
| 509 ngx_http_upstream_t *u; | |
| 510 ngx_http_grpc_ctx_t *ctx; | |
| 511 ngx_http_grpc_loc_conf_t *glcf; | |
| 512 | |
| 513 if (ngx_http_upstream_create(r) != NGX_OK) { | |
| 514 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 515 } | |
| 516 | |
| 517 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 518 | |
| 519 u = r->upstream; | |
| 520 | |
| 521 #if (NGX_HTTP_SSL) | |
| 522 u->ssl = (glcf->upstream.ssl != NULL); | |
| 523 | |
| 524 if (u->ssl) { | |
| 525 ngx_str_set(&u->schema, "grpcs://"); | |
| 526 | |
| 527 } else { | |
| 528 ngx_str_set(&u->schema, "grpc://"); | |
| 529 } | |
| 530 #else | |
| 531 ngx_str_set(&u->schema, "grpc://"); | |
| 532 #endif | |
| 533 | |
| 534 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
| 535 | |
| 536 u->conf = &glcf->upstream; | |
| 537 | |
| 538 u->create_request = ngx_http_grpc_create_request; | |
| 539 u->reinit_request = ngx_http_grpc_reinit_request; | |
| 540 u->process_header = ngx_http_grpc_process_header; | |
| 541 u->abort_request = ngx_http_grpc_abort_request; | |
| 542 u->finalize_request = ngx_http_grpc_finalize_request; | |
| 543 | |
| 544 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
| 545 if (ctx == NULL) { | |
| 546 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
| 547 } | |
| 548 | |
| 549 ctx->request = r; | |
| 550 | |
| 551 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
| 552 | |
| 553 u->input_filter_init = ngx_http_grpc_filter_init; | |
| 554 u->input_filter = ngx_http_grpc_filter; | |
| 555 u->input_filter_ctx = ctx; | |
| 556 | |
| 557 r->request_body_no_buffering = 1; | |
| 558 | |
| 559 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
| 560 | |
| 561 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
| 562 return rc; | |
| 563 } | |
| 564 | |
| 565 return NGX_DONE; | |
| 566 } | |
| 567 | |
| 568 | |
| 569 static ngx_int_t | |
| 570 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
| 571 { | |
| 572 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
| 573 size_t len, tmp_len, key_len, val_len, uri_len; | |
| 574 uintptr_t escape; | |
| 575 ngx_buf_t *b; | |
| 576 ngx_uint_t i, next; | |
| 577 ngx_chain_t *cl, *body; | |
| 578 ngx_list_part_t *part; | |
| 579 ngx_table_elt_t *header; | |
| 580 ngx_http_upstream_t *u; | |
| 581 ngx_http_grpc_frame_t *f; | |
| 582 ngx_http_script_code_pt code; | |
| 583 ngx_http_grpc_loc_conf_t *glcf; | |
| 584 ngx_http_script_engine_t e, le; | |
| 585 ngx_http_script_len_code_pt lcode; | |
| 586 | |
| 587 u = r->upstream; | |
| 588 | |
| 589 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
| 590 | |
| 591 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
| 592 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
| 593 | |
| 594 /* :method header */ | |
| 595 | |
| 596 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
| 597 len += 1; | |
| 598 tmp_len = 0; | |
| 599 | |
| 600 } else { | |
| 601 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
| 602 tmp_len = r->method_name.len; | |
| 603 } | |
| 604 | |
| 605 /* :scheme header */ | |
| 606 | |
| 607 len += 1; | |
| 608 | |
| 609 /* :path header */ | |
| 610 | |
| 611 if (r->valid_unparsed_uri) { | |
| 612 escape = 0; | |
| 613 uri_len = r->unparsed_uri.len; | |
| 614 | |
| 615 } else { | |
| 616 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
| 617 NGX_ESCAPE_URI); | |
| 618 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
| 619 } | |
| 620 | |
| 621 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
| 622 | |
| 623 if (tmp_len < uri_len) { | |
| 624 tmp_len = uri_len; | |
| 625 } | |
| 626 | |
| 627 /* :authority header */ | |
| 628 | |
| 629 if (!glcf->host_set) { | |
| 630 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
| 631 | |
| 632 if (tmp_len < glcf->host.len) { | |
| 633 tmp_len = glcf->host.len; | |
| 634 } | |
| 635 } | |
| 636 | |
| 637 /* other headers */ | |
| 638 | |
| 639 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
| 640 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
| 641 | |
| 642 le.ip = glcf->headers.lengths->elts; | |
| 643 le.request = r; | |
| 644 le.flushed = 1; | |
| 645 | |
| 646 while (*(uintptr_t *) le.ip) { | |
| 647 | |
| 648 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 649 key_len = lcode(&le); | |
| 650 | |
| 651 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 652 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 653 } | |
| 654 le.ip += sizeof(uintptr_t); | |
| 655 | |
| 656 if (val_len == 0) { | |
| 657 continue; | |
| 658 } | |
| 659 | |
| 660 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
| 661 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
| 662 | |
| 663 if (tmp_len < key_len) { | |
| 664 tmp_len = key_len; | |
| 665 } | |
| 666 | |
| 667 if (tmp_len < val_len) { | |
| 668 tmp_len = val_len; | |
| 669 } | |
| 670 } | |
| 671 | |
| 672 if (glcf->upstream.pass_request_headers) { | |
| 673 part = &r->headers_in.headers.part; | |
| 674 header = part->elts; | |
| 675 | |
| 676 for (i = 0; /* void */; i++) { | |
| 677 | |
| 678 if (i >= part->nelts) { | |
| 679 if (part->next == NULL) { | |
| 680 break; | |
| 681 } | |
| 682 | |
| 683 part = part->next; | |
| 684 header = part->elts; | |
| 685 i = 0; | |
| 686 } | |
| 687 | |
| 688 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 689 header[i].lowcase_key, header[i].key.len)) | |
| 690 { | |
| 691 continue; | |
| 692 } | |
| 693 | |
| 694 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
| 695 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
| 696 | |
| 697 if (tmp_len < header[i].key.len) { | |
| 698 tmp_len = header[i].key.len; | |
| 699 } | |
| 700 | |
| 701 if (tmp_len < header[i].value.len) { | |
| 702 tmp_len = header[i].value.len; | |
| 703 } | |
| 704 } | |
| 705 } | |
| 706 | |
| 707 /* continuation frames */ | |
| 708 | |
| 709 len += sizeof(ngx_http_grpc_frame_t) | |
| 710 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
| 711 | |
| 712 | |
| 713 b = ngx_create_temp_buf(r->pool, len); | |
| 714 if (b == NULL) { | |
| 715 return NGX_ERROR; | |
| 716 } | |
| 717 | |
| 718 cl = ngx_alloc_chain_link(r->pool); | |
| 719 if (cl == NULL) { | |
| 720 return NGX_ERROR; | |
| 721 } | |
| 722 | |
| 723 cl->buf = b; | |
| 724 cl->next = NULL; | |
| 725 | |
| 726 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
| 727 if (tmp == NULL) { | |
| 728 return NGX_ERROR; | |
| 729 } | |
| 730 | |
| 731 key_tmp = tmp + tmp_len; | |
| 732 val_tmp = tmp + 2 * tmp_len; | |
| 733 | |
| 734 /* connection preface */ | |
| 735 | |
| 736 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
| 737 sizeof(ngx_http_grpc_connection_start) - 1); | |
| 738 | |
| 739 /* headers frame */ | |
| 740 | |
| 741 headers_frame = b->last; | |
| 742 | |
| 743 f = (ngx_http_grpc_frame_t *) b->last; | |
| 744 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 745 | |
| 746 f->length_0 = 0; | |
| 747 f->length_1 = 0; | |
| 748 f->length_2 = 0; | |
| 749 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
| 750 f->flags = 0; | |
| 751 f->stream_id_0 = 0; | |
| 752 f->stream_id_1 = 0; | |
| 753 f->stream_id_2 = 0; | |
| 754 f->stream_id_3 = 1; | |
| 755 | |
| 756 if (r->method == NGX_HTTP_GET) { | |
| 757 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
| 758 | |
| 759 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 760 "grpc header: \":method: GET\""); | |
| 761 | |
| 762 } else if (r->method == NGX_HTTP_POST) { | |
| 763 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
| 764 | |
| 765 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 766 "grpc header: \":method: POST\""); | |
| 767 | |
| 768 } else { | |
| 769 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
| 770 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
| 771 r->method_name.len, tmp); | |
| 772 | |
| 773 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 774 "grpc header: \":method: %V\"", &r->method_name); | |
| 775 } | |
| 776 | |
| 777 #if (NGX_HTTP_SSL) | |
| 778 if (glcf->ssl) { | |
| 779 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
| 780 | |
| 781 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 782 "grpc header: \":scheme: https\""); | |
| 783 } else | |
| 784 #endif | |
| 785 { | |
| 786 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
| 787 | |
| 788 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 789 "grpc header: \":scheme: http\""); | |
| 790 } | |
| 791 | |
| 792 if (r->valid_unparsed_uri) { | |
| 793 | |
| 794 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
| 795 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
| 796 | |
| 797 } else { | |
| 798 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 799 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
| 800 r->unparsed_uri.len, tmp); | |
| 801 } | |
| 802 | |
| 803 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 804 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
| 805 | |
| 806 } else if (escape || r->args.len > 0) { | |
| 807 p = val_tmp; | |
| 808 | |
| 809 if (escape) { | |
| 810 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
| 811 NGX_ESCAPE_URI); | |
| 812 | |
| 813 } else { | |
| 814 p = ngx_copy(p, r->uri.data, r->uri.len); | |
| 815 } | |
| 816 | |
| 817 if (r->args.len > 0) { | |
| 818 *p++ = '?'; | |
| 819 p = ngx_copy(p, r->args.data, r->args.len); | |
| 820 } | |
| 821 | |
| 822 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 823 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
| 824 | |
| 825 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 826 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
| 827 | |
| 828 } else { | |
| 829 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
| 830 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
| 831 r->uri.len, tmp); | |
| 832 | |
| 833 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 834 "grpc header: \":path: %V\"", &r->uri); | |
| 835 } | |
| 836 | |
| 837 if (!glcf->host_set) { | |
| 838 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
| 839 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
| 840 glcf->host.len, tmp); | |
| 841 | |
| 842 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 843 "grpc header: \":authority: %V\"", &glcf->host); | |
| 844 } | |
| 845 | |
| 846 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
| 847 | |
| 848 e.ip = glcf->headers.values->elts; | |
| 849 e.request = r; | |
| 850 e.flushed = 1; | |
| 851 | |
| 852 le.ip = glcf->headers.lengths->elts; | |
| 853 | |
| 854 while (*(uintptr_t *) le.ip) { | |
| 855 | |
| 856 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 857 key_len = lcode(&le); | |
| 858 | |
| 859 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
| 860 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
| 861 } | |
| 862 le.ip += sizeof(uintptr_t); | |
| 863 | |
| 864 if (val_len == 0) { | |
| 865 e.skip = 1; | |
| 866 | |
| 867 while (*(uintptr_t *) e.ip) { | |
| 868 code = *(ngx_http_script_code_pt *) e.ip; | |
| 869 code((ngx_http_script_engine_t *) &e); | |
| 870 } | |
| 871 e.ip += sizeof(uintptr_t); | |
| 872 | |
| 873 e.skip = 0; | |
| 874 | |
| 875 continue; | |
| 876 } | |
| 877 | |
| 878 *b->last++ = 0; | |
| 879 | |
| 880 e.pos = key_tmp; | |
| 881 | |
| 882 code = *(ngx_http_script_code_pt *) e.ip; | |
| 883 code((ngx_http_script_engine_t *) &e); | |
| 884 | |
| 885 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
| 886 | |
| 887 e.pos = val_tmp; | |
| 888 | |
| 889 while (*(uintptr_t *) e.ip) { | |
| 890 code = *(ngx_http_script_code_pt *) e.ip; | |
| 891 code((ngx_http_script_engine_t *) &e); | |
| 892 } | |
| 893 e.ip += sizeof(uintptr_t); | |
| 894 | |
| 895 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
| 896 | |
| 897 #if (NGX_DEBUG) | |
| 898 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 899 ngx_strlow(key_tmp, key_tmp, key_len); | |
| 900 | |
| 901 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 902 "grpc header: \"%*s: %*s\"", | |
| 903 key_len, key_tmp, val_len, val_tmp); | |
| 904 } | |
| 905 #endif | |
| 906 } | |
| 907 | |
| 908 if (glcf->upstream.pass_request_headers) { | |
| 909 part = &r->headers_in.headers.part; | |
| 910 header = part->elts; | |
| 911 | |
| 912 for (i = 0; /* void */; i++) { | |
| 913 | |
| 914 if (i >= part->nelts) { | |
| 915 if (part->next == NULL) { | |
| 916 break; | |
| 917 } | |
| 918 | |
| 919 part = part->next; | |
| 920 header = part->elts; | |
| 921 i = 0; | |
| 922 } | |
| 923 | |
| 924 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
| 925 header[i].lowcase_key, header[i].key.len)) | |
| 926 { | |
| 927 continue; | |
| 928 } | |
| 929 | |
| 930 *b->last++ = 0; | |
| 931 | |
| 932 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
| 933 header[i].key.len, tmp); | |
| 934 | |
| 935 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
| 936 header[i].value.len, tmp); | |
| 937 | |
| 938 #if (NGX_DEBUG) | |
| 939 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 940 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
| 941 | |
| 942 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 943 "grpc header: \"%*s: %V\"", | |
| 944 header[i].key.len, tmp, &header[i].value); | |
| 945 } | |
| 946 #endif | |
| 947 } | |
| 948 } | |
| 949 | |
| 950 /* update headers frame length */ | |
| 951 | |
| 952 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
| 953 | |
| 954 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 955 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 956 next = 1; | |
| 957 | |
| 958 } else { | |
| 959 next = 0; | |
| 960 } | |
| 961 | |
| 962 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 963 | |
| 964 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 965 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 966 f->length_2 = (u_char) (len & 0xff); | |
| 967 | |
| 968 /* create additional continuation frames */ | |
| 969 | |
| 970 p = headers_frame; | |
| 971 | |
| 972 while (next) { | |
| 973 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 974 len = b->last - p; | |
| 975 | |
| 976 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
| 977 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 978 | |
| 979 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 980 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
| 981 next = 1; | |
| 982 | |
| 983 } else { | |
| 984 next = 0; | |
| 985 } | |
| 986 | |
| 987 f = (ngx_http_grpc_frame_t *) p; | |
| 988 | |
| 989 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 990 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 991 f->length_2 = (u_char) (len & 0xff); | |
| 992 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
| 993 f->flags = 0; | |
| 994 f->stream_id_0 = 0; | |
| 995 f->stream_id_1 = 0; | |
| 996 f->stream_id_2 = 0; | |
| 997 f->stream_id_3 = 1; | |
| 998 } | |
| 999 | |
| 1000 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
| 1001 | |
| 1002 #if (NGX_DEBUG) | |
| 1003 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1004 u_char buf[512]; | |
| 1005 size_t n, m; | |
| 1006 | |
| 1007 n = ngx_min(b->last - b->pos, 256); | |
| 1008 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1009 | |
| 1010 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1011 "grpc header: %*s%s, len: %uz", | |
| 1012 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1013 b->last - b->pos); | |
| 1014 } | |
| 1015 #endif | |
| 1016 | |
| 1017 if (r->request_body_no_buffering) { | |
| 1018 | |
| 1019 u->request_bufs = cl; | |
| 1020 | |
| 1021 } else { | |
| 1022 | |
| 1023 body = u->request_bufs; | |
| 1024 u->request_bufs = cl; | |
| 1025 | |
| 1026 if (body == NULL) { | |
| 1027 f = (ngx_http_grpc_frame_t *) headers_frame; | |
| 1028 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1029 } | |
| 1030 | |
| 1031 while (body) { | |
| 1032 b = ngx_alloc_buf(r->pool); | |
| 1033 if (b == NULL) { | |
| 1034 return NGX_ERROR; | |
| 1035 } | |
| 1036 | |
| 1037 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
| 1038 | |
| 1039 cl->next = ngx_alloc_chain_link(r->pool); | |
| 1040 if (cl->next == NULL) { | |
| 1041 return NGX_ERROR; | |
| 1042 } | |
| 1043 | |
| 1044 cl = cl->next; | |
| 1045 cl->buf = b; | |
| 1046 | |
| 1047 body = body->next; | |
| 1048 } | |
| 1049 | |
| 1050 b->last_buf = 1; | |
| 1051 } | |
| 1052 | |
| 1053 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
| 1054 u->output.filter_ctx = r; | |
| 1055 | |
| 1056 b->flush = 1; | |
| 1057 cl->next = NULL; | |
| 1058 | |
| 1059 return NGX_OK; | |
| 1060 } | |
| 1061 | |
| 1062 | |
| 1063 static ngx_int_t | |
| 1064 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
| 1065 { | |
| 1066 ngx_http_grpc_ctx_t *ctx; | |
| 1067 | |
| 1068 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 1069 | |
| 1070 if (ctx == NULL) { | |
| 1071 return NGX_OK; | |
| 1072 } | |
| 1073 | |
| 1074 ctx->state = 0; | |
| 1075 ctx->header_sent = 0; | |
| 1076 ctx->output_closed = 0; | |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1077 ctx->output_blocked = 0; |
| 7233 | 1078 ctx->parsing_headers = 0; |
| 1079 ctx->end_stream = 0; | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1080 ctx->done = 0; |
| 7233 | 1081 ctx->status = 0; |
| 1082 ctx->connection = NULL; | |
| 1083 | |
| 1084 return NGX_OK; | |
| 1085 } | |
| 1086 | |
| 1087 | |
| 1088 static ngx_int_t | |
| 1089 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
| 1090 { | |
| 1091 ngx_http_request_t *r = data; | |
| 1092 | |
| 1093 off_t file_pos; | |
| 1094 u_char *p, *pos, *start; | |
| 1095 size_t len, limit; | |
| 1096 ngx_buf_t *b; | |
| 1097 ngx_int_t rc; | |
| 1098 ngx_uint_t next, last; | |
| 1099 ngx_chain_t *cl, *out, **ll; | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1100 ngx_http_upstream_t *u; |
| 7233 | 1101 ngx_http_grpc_ctx_t *ctx; |
| 1102 ngx_http_grpc_frame_t *f; | |
| 1103 | |
| 1104 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1105 "grpc output filter"); | |
| 1106 | |
| 1107 ctx = ngx_http_grpc_get_ctx(r); | |
| 1108 | |
| 1109 if (ctx == NULL) { | |
| 1110 return NGX_ERROR; | |
| 1111 } | |
| 1112 | |
| 1113 if (in) { | |
| 1114 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
| 1115 return NGX_ERROR; | |
| 1116 } | |
| 1117 } | |
| 1118 | |
| 1119 out = NULL; | |
| 1120 ll = &out; | |
| 1121 | |
| 1122 if (!ctx->header_sent) { | |
| 1123 /* first buffer contains headers */ | |
| 1124 | |
| 1125 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1126 "grpc output header"); | |
| 1127 | |
| 1128 ctx->header_sent = 1; | |
| 1129 | |
| 1130 if (ctx->id != 1) { | |
| 1131 /* | |
| 1132 * keepalive connection: skip connection preface, | |
| 1133 * update stream identifiers | |
| 1134 */ | |
| 1135 | |
| 1136 b = ctx->in->buf; | |
| 1137 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
| 1138 | |
| 1139 p = b->pos; | |
| 1140 | |
| 1141 while (p < b->last) { | |
| 1142 f = (ngx_http_grpc_frame_t *) p; | |
| 1143 p += sizeof(ngx_http_grpc_frame_t); | |
| 1144 | |
| 1145 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1146 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1147 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1148 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1149 | |
| 1150 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
| 1151 } | |
| 1152 } | |
| 1153 | |
| 1154 if (ctx->in->buf->last_buf) { | |
| 1155 ctx->output_closed = 1; | |
| 1156 } | |
| 1157 | |
| 1158 *ll = ctx->in; | |
| 1159 ll = &ctx->in->next; | |
| 1160 | |
| 1161 ctx->in = ctx->in->next; | |
| 1162 } | |
| 1163 | |
| 1164 if (ctx->out) { | |
| 1165 /* queued control frames */ | |
| 1166 | |
| 1167 *ll = ctx->out; | |
| 1168 | |
| 1169 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
| 1170 ll = &cl->next; | |
| 1171 } | |
| 1172 | |
| 1173 ctx->out = NULL; | |
| 1174 } | |
| 1175 | |
| 1176 f = NULL; | |
| 1177 last = 0; | |
| 1178 | |
| 1179 limit = ngx_max(0, ctx->send_window); | |
| 1180 | |
| 1181 if (limit > ctx->connection->send_window) { | |
| 1182 limit = ctx->connection->send_window; | |
| 1183 } | |
| 1184 | |
| 1185 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1186 "grpc output limit: %uz w:%z:%uz", | |
| 1187 limit, ctx->send_window, ctx->connection->send_window); | |
| 1188 | |
| 1189 #if (NGX_SUPPRESS_WARN) | |
| 1190 file_pos = 0; | |
| 1191 pos = NULL; | |
| 1192 cl = NULL; | |
| 1193 #endif | |
| 1194 | |
| 1195 in = ctx->in; | |
| 1196 | |
| 1197 while (in && limit > 0) { | |
| 1198 | |
| 1199 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1200 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
| 1201 "file: %O, size: %O", | |
| 1202 in->buf->last_buf, | |
| 1203 in->buf->in_file, | |
| 1204 in->buf->start, in->buf->pos, | |
| 1205 in->buf->last - in->buf->pos, | |
| 1206 in->buf->file_pos, | |
| 1207 in->buf->file_last - in->buf->file_pos); | |
| 1208 | |
| 1209 if (ngx_buf_special(in->buf)) { | |
| 1210 goto next; | |
| 1211 } | |
| 1212 | |
| 1213 if (in->buf->in_file) { | |
| 1214 file_pos = in->buf->file_pos; | |
| 1215 | |
| 1216 } else { | |
| 1217 pos = in->buf->pos; | |
| 1218 } | |
| 1219 | |
| 1220 next = 0; | |
| 1221 | |
| 1222 do { | |
| 1223 | |
| 1224 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1225 if (cl == NULL) { | |
| 1226 return NGX_ERROR; | |
| 1227 } | |
| 1228 | |
| 1229 b = cl->buf; | |
| 1230 | |
| 1231 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1232 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1233 | |
| 1234 *ll = cl; | |
| 1235 ll = &cl->next; | |
| 1236 | |
| 1237 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 1238 if (cl == NULL) { | |
| 1239 return NGX_ERROR; | |
| 1240 } | |
| 1241 | |
| 1242 b = cl->buf; | |
| 1243 start = b->start; | |
| 1244 | |
| 1245 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
| 1246 | |
| 1247 /* | |
| 1248 * restore b->start to preserve memory allocated in the buffer, | |
| 1249 * to reuse it later for headers and control frames | |
| 1250 */ | |
| 1251 | |
| 1252 b->start = start; | |
| 1253 | |
| 1254 if (in->buf->in_file) { | |
| 1255 b->file_pos = file_pos; | |
| 1256 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1257 | |
| 1258 if (file_pos >= in->buf->file_last) { | |
| 1259 file_pos = in->buf->file_last; | |
| 1260 next = 1; | |
| 1261 } | |
| 1262 | |
| 1263 b->file_last = file_pos; | |
| 1264 len = (ngx_uint_t) (file_pos - b->file_pos); | |
| 1265 | |
| 1266 } else { | |
| 1267 b->pos = pos; | |
| 1268 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
| 1269 | |
| 1270 if (pos >= in->buf->last) { | |
| 1271 pos = in->buf->last; | |
| 1272 next = 1; | |
| 1273 } | |
| 1274 | |
| 1275 b->last = pos; | |
| 1276 len = (ngx_uint_t) (pos - b->pos); | |
| 1277 } | |
| 1278 | |
| 1279 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
| 1280 b->shadow = in->buf; | |
| 1281 b->last_shadow = next; | |
| 1282 | |
| 1283 b->last_buf = 0; | |
| 1284 b->last_in_chain = 0; | |
| 1285 | |
| 1286 *ll = cl; | |
| 1287 ll = &cl->next; | |
| 1288 | |
| 1289 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
| 1290 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
| 1291 f->length_2 = (u_char) (len & 0xff); | |
| 1292 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1293 f->flags = 0; | |
| 1294 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1295 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1296 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1297 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1298 | |
| 1299 limit -= len; | |
| 1300 ctx->send_window -= len; | |
| 1301 ctx->connection->send_window -= len; | |
| 1302 | |
| 1303 } while (!next && limit > 0); | |
| 1304 | |
| 1305 if (!next) { | |
| 1306 /* | |
| 1307 * if the buffer wasn't fully sent due to flow control limits, | |
| 1308 * preserve position for future use | |
| 1309 */ | |
| 1310 | |
| 1311 if (in->buf->in_file) { | |
| 1312 in->buf->file_pos = file_pos; | |
| 1313 | |
| 1314 } else { | |
| 1315 in->buf->pos = pos; | |
| 1316 } | |
| 1317 | |
| 1318 break; | |
| 1319 } | |
| 1320 | |
| 1321 next: | |
| 1322 | |
| 1323 if (in->buf->last_buf) { | |
| 1324 last = 1; | |
| 1325 } | |
| 1326 | |
| 1327 in = in->next; | |
| 1328 } | |
| 1329 | |
| 1330 ctx->in = in; | |
| 1331 | |
| 1332 if (last) { | |
| 1333 | |
| 1334 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1335 "grpc output last"); | |
| 1336 | |
| 1337 ctx->output_closed = 1; | |
| 1338 | |
| 1339 if (f) { | |
| 1340 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1341 | |
| 1342 } else { | |
| 1343 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 1344 if (cl == NULL) { | |
| 1345 return NGX_ERROR; | |
| 1346 } | |
| 1347 | |
| 1348 b = cl->buf; | |
| 1349 | |
| 1350 f = (ngx_http_grpc_frame_t *) b->last; | |
| 1351 b->last += sizeof(ngx_http_grpc_frame_t); | |
| 1352 | |
| 1353 f->length_0 = 0; | |
| 1354 f->length_1 = 0; | |
| 1355 f->length_2 = 0; | |
| 1356 f->type = NGX_HTTP_V2_DATA_FRAME; | |
| 1357 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
| 1358 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 1359 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 1360 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 1361 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 1362 | |
| 1363 *ll = cl; | |
| 1364 ll = &cl->next; | |
| 1365 } | |
| 1366 | |
| 1367 cl->buf->last_buf = 1; | |
| 1368 } | |
| 1369 | |
| 1370 *ll = NULL; | |
| 1371 | |
| 1372 #if (NGX_DEBUG) | |
| 1373 | |
| 1374 for (cl = out; cl; cl = cl->next) { | |
| 1375 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
| 1376 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
| 1377 "file: %O, size: %O", | |
| 1378 cl->buf->last_buf, | |
| 1379 cl->buf->in_file, | |
| 1380 cl->buf->start, cl->buf->pos, | |
| 1381 cl->buf->last - cl->buf->pos, | |
| 1382 cl->buf->file_pos, | |
| 1383 cl->buf->file_last - cl->buf->file_pos); | |
| 1384 } | |
| 1385 | |
| 1386 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1387 "grpc output limit: %uz w:%z:%uz", | |
| 1388 limit, ctx->send_window, ctx->connection->send_window); | |
| 1389 | |
| 1390 #endif | |
| 1391 | |
| 1392 rc = ngx_chain_writer(&r->upstream->writer, out); | |
| 1393 | |
| 1394 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
| 1395 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
| 1396 | |
| 1397 for (cl = ctx->free; cl; cl = cl->next) { | |
| 1398 | |
| 1399 /* mark original buffers as sent */ | |
| 1400 | |
| 1401 if (cl->buf->shadow) { | |
| 1402 if (cl->buf->last_shadow) { | |
| 1403 b = cl->buf->shadow; | |
| 1404 b->pos = b->last; | |
| 1405 } | |
| 1406 | |
| 1407 cl->buf->shadow = NULL; | |
| 1408 } | |
| 1409 } | |
| 1410 | |
| 1411 if (rc == NGX_OK && ctx->in) { | |
| 1412 rc = NGX_AGAIN; | |
| 1413 } | |
| 1414 | |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1415 if (rc == NGX_AGAIN) { |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1416 ctx->output_blocked = 1; |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1417 |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1418 } else { |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1419 ctx->output_blocked = 0; |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1420 } |
|
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1421 |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1422 if (ctx->done) { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1423 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1424 /* |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1425 * We have already got the response and were sending some additional |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1426 * control frames. Even if there is still something unsent, stop |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1427 * here anyway. |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1428 */ |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1429 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1430 u = r->upstream; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1431 u->length = 0; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1432 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1433 if (ctx->in == NULL |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1434 && ctx->out == NULL |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1435 && ctx->output_closed |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1436 && !ctx->output_blocked |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1437 && ctx->state == ngx_http_grpc_st_start) |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1438 { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1439 u->keepalive = 1; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1440 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1441 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1442 ngx_post_event(u->peer.connection->read, &ngx_posted_events); |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1443 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1444 |
| 7233 | 1445 return rc; |
| 1446 } | |
| 1447 | |
| 1448 | |
| 1449 static ngx_int_t | |
| 1450 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
| 1451 { | |
| 1452 ngx_str_t *status_line; | |
| 1453 ngx_int_t rc, status; | |
| 1454 ngx_buf_t *b; | |
| 1455 ngx_table_elt_t *h; | |
| 1456 ngx_http_upstream_t *u; | |
| 1457 ngx_http_grpc_ctx_t *ctx; | |
| 1458 ngx_http_upstream_header_t *hh; | |
| 1459 ngx_http_upstream_main_conf_t *umcf; | |
| 1460 | |
| 1461 u = r->upstream; | |
| 1462 b = &u->buffer; | |
| 1463 | |
| 1464 #if (NGX_DEBUG) | |
| 1465 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
| 1466 u_char buf[512]; | |
| 1467 size_t n, m; | |
| 1468 | |
| 1469 n = ngx_min(b->last - b->pos, 256); | |
| 1470 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
| 1471 | |
| 1472 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1473 "grpc response: %*s%s, len: %uz", | |
| 1474 m, buf, b->last - b->pos > 256 ? "..." : "", | |
| 1475 b->last - b->pos); | |
| 1476 } | |
| 1477 #endif | |
| 1478 | |
| 1479 ctx = ngx_http_grpc_get_ctx(r); | |
| 1480 | |
| 1481 if (ctx == NULL) { | |
| 1482 return NGX_ERROR; | |
| 1483 } | |
| 1484 | |
| 1485 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
| 1486 | |
| 1487 for ( ;; ) { | |
| 1488 | |
| 1489 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1490 | |
| 1491 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1492 | |
| 1493 if (rc == NGX_AGAIN) { | |
| 1494 | |
| 1495 /* | |
| 1496 * there can be a lot of window update frames, | |
| 1497 * so we reset buffer if it is empty and we haven't | |
| 1498 * started parsing headers yet | |
| 1499 */ | |
| 1500 | |
| 1501 if (!ctx->parsing_headers) { | |
| 1502 b->pos = b->start; | |
| 1503 b->last = b->pos; | |
| 1504 } | |
| 1505 | |
| 1506 return NGX_AGAIN; | |
| 1507 } | |
| 1508 | |
| 1509 if (rc == NGX_ERROR) { | |
| 1510 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1511 } | |
| 1512 | |
| 1513 /* | |
| 1514 * RFC 7540 says that implementations MUST discard frames | |
| 1515 * that have unknown or unsupported types. However, extension | |
| 1516 * frames that appear in the middle of a header block are | |
| 1517 * not permitted. Also, for obvious reasons CONTINUATION frames | |
| 1518 * cannot appear before headers, and DATA frames are not expected | |
| 1519 * to appear before all headers are parsed. | |
| 1520 */ | |
| 1521 | |
| 1522 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
| 1523 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1524 && !ctx->parsing_headers) | |
| 1525 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1526 && ctx->parsing_headers)) | |
| 1527 { | |
| 1528 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1529 "upstream sent unexpected http2 frame: %d", | |
| 1530 ctx->type); | |
| 1531 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1532 } | |
| 1533 | |
| 1534 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1535 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1536 "upstream sent frame for unknown stream %ui", | |
| 1537 ctx->stream_id); | |
| 1538 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1539 } | |
| 1540 } | |
| 1541 | |
| 1542 /* frame payload */ | |
| 1543 | |
| 1544 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 1545 | |
| 1546 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 1547 | |
| 1548 if (rc == NGX_AGAIN) { | |
| 1549 return NGX_AGAIN; | |
| 1550 } | |
| 1551 | |
| 1552 if (rc == NGX_ERROR) { | |
| 1553 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1554 } | |
| 1555 | |
| 1556 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1557 "upstream rejected request with error %ui", | |
| 1558 ctx->error); | |
| 1559 | |
| 1560 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1561 } | |
| 1562 | |
| 1563 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 1564 | |
| 1565 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 1566 | |
| 1567 if (rc == NGX_AGAIN) { | |
| 1568 return NGX_AGAIN; | |
| 1569 } | |
| 1570 | |
| 1571 if (rc == NGX_ERROR) { | |
| 1572 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1573 } | |
| 1574 | |
| 1575 /* | |
| 1576 * If stream_id is lower than one we use, our | |
| 1577 * request won't be processed and needs to be retried. | |
| 1578 * If stream_id is greater or equal to the one we use, | |
| 1579 * we can continue normally (except we can't use this | |
| 1580 * connection for additional requests). If there is | |
| 1581 * a real error, the connection will be closed. | |
| 1582 */ | |
| 1583 | |
| 1584 if (ctx->stream_id < ctx->id) { | |
| 1585 | |
| 1586 /* TODO: we can retry non-idempotent requests */ | |
| 1587 | |
| 1588 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1589 "upstream sent goaway with error %ui", | |
| 1590 ctx->error); | |
| 1591 | |
| 1592 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1593 } | |
| 1594 | |
| 1595 continue; | |
| 1596 } | |
| 1597 | |
| 1598 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 1599 | |
| 1600 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 1601 | |
| 1602 if (rc == NGX_AGAIN) { | |
| 1603 return NGX_AGAIN; | |
| 1604 } | |
| 1605 | |
| 1606 if (rc == NGX_ERROR) { | |
| 1607 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1608 } | |
| 1609 | |
| 1610 if (ctx->in) { | |
| 1611 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1612 } | |
| 1613 | |
| 1614 continue; | |
| 1615 } | |
| 1616 | |
| 1617 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 1618 | |
| 1619 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 1620 | |
| 1621 if (rc == NGX_AGAIN) { | |
| 1622 return NGX_AGAIN; | |
| 1623 } | |
| 1624 | |
| 1625 if (rc == NGX_ERROR) { | |
| 1626 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1627 } | |
| 1628 | |
| 1629 if (ctx->in) { | |
| 1630 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1631 } | |
| 1632 | |
| 1633 continue; | |
| 1634 } | |
| 1635 | |
| 1636 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 1637 | |
| 1638 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 1639 | |
| 1640 if (rc == NGX_AGAIN) { | |
| 1641 return NGX_AGAIN; | |
| 1642 } | |
| 1643 | |
| 1644 if (rc == NGX_ERROR) { | |
| 1645 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1646 } | |
| 1647 | |
| 1648 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 1649 continue; | |
| 1650 } | |
| 1651 | |
| 1652 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 1653 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1654 "upstream sent unexpected push promise frame"); | |
| 1655 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1656 } | |
| 1657 | |
| 1658 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
| 1659 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 1660 { | |
| 1661 /* priority, unknown frames */ | |
| 1662 | |
| 1663 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1664 ctx->rest -= b->last - b->pos; | |
| 1665 b->pos = b->last; | |
| 1666 return NGX_AGAIN; | |
| 1667 } | |
| 1668 | |
| 1669 b->pos += ctx->rest; | |
| 1670 ctx->rest = 0; | |
| 1671 ctx->state = ngx_http_grpc_st_start; | |
| 1672 | |
| 1673 continue; | |
| 1674 } | |
| 1675 | |
| 1676 /* headers */ | |
| 1677 | |
| 1678 for ( ;; ) { | |
| 1679 | |
| 1680 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 1681 | |
| 1682 if (rc == NGX_AGAIN) { | |
| 1683 break; | |
| 1684 } | |
| 1685 | |
| 1686 if (rc == NGX_OK) { | |
| 1687 | |
| 1688 /* a header line has been parsed successfully */ | |
| 1689 | |
| 1690 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1691 "grpc header: \"%V: %V\"", | |
| 1692 &ctx->name, &ctx->value); | |
| 1693 | |
| 1694 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 1695 | |
| 1696 if (ctx->name.len != sizeof(":status") - 1 | |
| 1697 || ngx_strncmp(ctx->name.data, ":status", | |
| 1698 sizeof(":status") - 1) | |
| 1699 != 0) | |
| 1700 { | |
| 1701 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1702 "upstream sent invalid header \"%V: %V\"", | |
| 1703 &ctx->name, &ctx->value); | |
| 1704 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1705 } | |
| 1706 | |
| 1707 if (ctx->status) { | |
| 1708 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1709 "upstream sent duplicate :status header"); | |
| 1710 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1711 } | |
| 1712 | |
| 1713 status_line = &ctx->value; | |
| 1714 | |
| 1715 if (status_line->len != 3) { | |
| 1716 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1717 "upstream sent invalid :status \"%V\"", | |
| 1718 status_line); | |
| 1719 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1720 } | |
| 1721 | |
| 1722 status = ngx_atoi(status_line->data, 3); | |
| 1723 | |
| 1724 if (status == NGX_ERROR) { | |
| 1725 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1726 "upstream sent invalid :status \"%V\"", | |
| 1727 status_line); | |
| 1728 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1729 } | |
| 1730 | |
| 1731 if (status < NGX_HTTP_OK) { | |
| 1732 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1733 "upstream sent unexpected :status \"%V\"", | |
| 1734 status_line); | |
| 1735 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1736 } | |
| 1737 | |
| 1738 u->headers_in.status_n = status; | |
| 1739 | |
| 1740 if (u->state && u->state->status == 0) { | |
| 1741 u->state->status = status; | |
| 1742 } | |
| 1743 | |
| 1744 ctx->status = 1; | |
| 1745 | |
| 1746 continue; | |
| 1747 | |
| 1748 } else if (!ctx->status) { | |
| 1749 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1750 "upstream sent no :status header"); | |
| 1751 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1752 } | |
| 1753 | |
| 1754 h = ngx_list_push(&u->headers_in.headers); | |
| 1755 if (h == NULL) { | |
| 1756 return NGX_ERROR; | |
| 1757 } | |
| 1758 | |
| 1759 h->key = ctx->name; | |
| 1760 h->value = ctx->value; | |
| 1761 h->lowcase_key = h->key.data; | |
| 1762 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 1763 | |
| 1764 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
| 1765 h->lowcase_key, h->key.len); | |
| 1766 | |
| 1767 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
| 1768 return NGX_ERROR; | |
| 1769 } | |
| 1770 | |
| 1771 continue; | |
| 1772 } | |
| 1773 | |
| 1774 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 1775 | |
| 1776 /* a whole header has been parsed successfully */ | |
| 1777 | |
| 1778 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1779 "grpc header done"); | |
| 1780 | |
|
7235
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1781 if (ctx->end_stream) { |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1782 u->headers_in.content_length_n = 0; |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1783 |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1784 if (ctx->in == NULL |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1785 && ctx->out == NULL |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1786 && ctx->output_closed |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1787 && !ctx->output_blocked |
|
7235
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1788 && b->last == b->pos) |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1789 { |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1790 u->keepalive = 1; |
|
c2a0a838c40f
gRPC: special handling of "trailer only" responses.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7234
diff
changeset
|
1791 } |
| 7233 | 1792 } |
| 1793 | |
| 1794 return NGX_OK; | |
| 1795 } | |
| 1796 | |
| 1797 /* there was error while a header line parsing */ | |
| 1798 | |
| 1799 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1800 "upstream sent invalid header"); | |
| 1801 | |
| 1802 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
| 1803 } | |
| 1804 | |
| 1805 /* rc == NGX_AGAIN */ | |
| 1806 | |
| 1807 if (ctx->rest == 0) { | |
| 1808 ctx->state = ngx_http_grpc_st_start; | |
| 1809 continue; | |
| 1810 } | |
| 1811 | |
| 1812 return NGX_AGAIN; | |
| 1813 } | |
| 1814 } | |
| 1815 | |
| 1816 | |
| 1817 static ngx_int_t | |
| 1818 ngx_http_grpc_filter_init(void *data) | |
| 1819 { | |
| 1820 ngx_http_grpc_ctx_t *ctx = data; | |
| 1821 | |
| 1822 ngx_http_request_t *r; | |
| 1823 ngx_http_upstream_t *u; | |
| 1824 | |
| 1825 r = ctx->request; | |
| 1826 u = r->upstream; | |
| 1827 | |
| 1828 u->length = 1; | |
| 1829 | |
| 1830 if (ctx->end_stream) { | |
| 1831 u->length = 0; | |
| 1832 } | |
| 1833 | |
| 1834 return NGX_OK; | |
| 1835 } | |
| 1836 | |
| 1837 | |
| 1838 static ngx_int_t | |
| 1839 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
| 1840 { | |
| 1841 ngx_http_grpc_ctx_t *ctx = data; | |
| 1842 | |
| 1843 ngx_int_t rc; | |
| 1844 ngx_buf_t *b, *buf; | |
| 1845 ngx_chain_t *cl, **ll; | |
| 1846 ngx_table_elt_t *h; | |
| 1847 ngx_http_request_t *r; | |
| 1848 ngx_http_upstream_t *u; | |
| 1849 | |
| 1850 r = ctx->request; | |
| 1851 u = r->upstream; | |
| 1852 b = &u->buffer; | |
| 1853 | |
| 1854 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 1855 "grpc filter bytes:%z", bytes); | |
| 1856 | |
| 1857 b->pos = b->last; | |
| 1858 b->last += bytes; | |
| 1859 | |
| 1860 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
| 1861 ll = &cl->next; | |
| 1862 } | |
| 1863 | |
| 1864 for ( ;; ) { | |
| 1865 | |
| 1866 if (ctx->state < ngx_http_grpc_st_payload) { | |
| 1867 | |
| 1868 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
| 1869 | |
| 1870 if (rc == NGX_AGAIN) { | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1871 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1872 if (ctx->done) { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1873 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1874 /* |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1875 * We have finished parsing the response and the |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1876 * remaining control frames. If there are unsent |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1877 * control frames, post a write event to send them. |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1878 */ |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1879 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1880 if (ctx->out) { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1881 ngx_post_event(u->peer.connection->write, |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1882 &ngx_posted_events); |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1883 return NGX_AGAIN; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1884 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1885 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1886 u->length = 0; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1887 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1888 if (ctx->in == NULL |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1889 && ctx->output_closed |
|
7350
67c6cb7f477c
gRPC: disabled keepalive when sending control frames was blocked.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7349
diff
changeset
|
1890 && !ctx->output_blocked |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1891 && ctx->state == ngx_http_grpc_st_start) |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1892 { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1893 u->keepalive = 1; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1894 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1895 |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1896 break; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1897 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1898 |
| 7233 | 1899 return NGX_AGAIN; |
| 1900 } | |
| 1901 | |
| 1902 if (rc == NGX_ERROR) { | |
| 1903 return NGX_ERROR; | |
| 1904 } | |
| 1905 | |
| 1906 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1907 && !ctx->parsing_headers) | |
| 1908 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
| 1909 && ctx->parsing_headers)) | |
| 1910 { | |
| 1911 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1912 "upstream sent unexpected http2 frame: %d", | |
| 1913 ctx->type); | |
| 1914 return NGX_ERROR; | |
| 1915 } | |
| 1916 | |
| 1917 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
| 1918 | |
| 1919 if (ctx->stream_id != ctx->id) { | |
| 1920 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1921 "upstream sent data frame " | |
| 1922 "for unknown stream %ui", | |
| 1923 ctx->stream_id); | |
| 1924 return NGX_ERROR; | |
| 1925 } | |
| 1926 | |
| 1927 if (ctx->rest > ctx->recv_window) { | |
| 1928 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1929 "upstream violated stream flow control, " | |
| 1930 "received %uz data frame with window %uz", | |
| 1931 ctx->rest, ctx->recv_window); | |
| 1932 return NGX_ERROR; | |
| 1933 } | |
| 1934 | |
| 1935 if (ctx->rest > ctx->connection->recv_window) { | |
| 1936 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1937 "upstream violated connection flow control, " | |
| 1938 "received %uz data frame with window %uz", | |
| 1939 ctx->rest, ctx->connection->recv_window); | |
| 1940 return NGX_ERROR; | |
| 1941 } | |
| 1942 | |
| 1943 ctx->recv_window -= ctx->rest; | |
| 1944 ctx->connection->recv_window -= ctx->rest; | |
| 1945 | |
| 1946 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
| 1947 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
| 1948 { | |
| 1949 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
| 1950 return NGX_ERROR; | |
| 1951 } | |
| 1952 | |
| 1953 ngx_post_event(u->peer.connection->write, | |
| 1954 &ngx_posted_events); | |
| 1955 } | |
| 1956 } | |
| 1957 | |
| 1958 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
| 1959 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 1960 "upstream sent frame for unknown stream %ui", | |
| 1961 ctx->stream_id); | |
| 1962 return NGX_ERROR; | |
| 1963 } | |
| 1964 | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1965 if (ctx->stream_id && ctx->done) { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1966 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1967 "upstream sent frame for closed stream %ui", |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1968 ctx->stream_id); |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1969 return NGX_ERROR; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1970 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1971 |
| 7233 | 1972 ctx->padding = 0; |
| 1973 } | |
| 1974 | |
| 1975 if (ctx->state == ngx_http_grpc_st_padding) { | |
| 1976 | |
| 1977 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 1978 ctx->rest -= b->last - b->pos; | |
| 1979 b->pos = b->last; | |
| 1980 return NGX_AGAIN; | |
| 1981 } | |
| 1982 | |
| 1983 b->pos += ctx->rest; | |
| 1984 ctx->rest = 0; | |
| 1985 ctx->state = ngx_http_grpc_st_start; | |
| 1986 | |
| 1987 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
1988 ctx->done = 1; |
| 7233 | 1989 } |
| 1990 | |
| 1991 continue; | |
| 1992 } | |
| 1993 | |
| 1994 /* frame payload */ | |
| 1995 | |
| 1996 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
| 1997 | |
| 1998 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
| 1999 | |
| 2000 if (rc == NGX_AGAIN) { | |
| 2001 return NGX_AGAIN; | |
| 2002 } | |
| 2003 | |
| 2004 if (rc == NGX_ERROR) { | |
| 2005 return NGX_ERROR; | |
| 2006 } | |
| 2007 | |
| 2008 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2009 "upstream rejected request with error %ui", | |
| 2010 ctx->error); | |
| 2011 | |
| 2012 return NGX_ERROR; | |
| 2013 } | |
| 2014 | |
| 2015 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
| 2016 | |
| 2017 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
| 2018 | |
| 2019 if (rc == NGX_AGAIN) { | |
| 2020 return NGX_AGAIN; | |
| 2021 } | |
| 2022 | |
| 2023 if (rc == NGX_ERROR) { | |
| 2024 return NGX_ERROR; | |
| 2025 } | |
| 2026 | |
| 2027 /* | |
| 2028 * If stream_id is lower than one we use, our | |
| 2029 * request won't be processed and needs to be retried. | |
| 2030 * If stream_id is greater or equal to the one we use, | |
| 2031 * we can continue normally (except we can't use this | |
| 2032 * connection for additional requests). If there is | |
| 2033 * a real error, the connection will be closed. | |
| 2034 */ | |
| 2035 | |
| 2036 if (ctx->stream_id < ctx->id) { | |
| 2037 | |
| 2038 /* TODO: we can retry non-idempotent requests */ | |
| 2039 | |
| 2040 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2041 "upstream sent goaway with error %ui", | |
| 2042 ctx->error); | |
| 2043 | |
| 2044 return NGX_ERROR; | |
| 2045 } | |
| 2046 | |
| 2047 continue; | |
| 2048 } | |
| 2049 | |
| 2050 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
| 2051 | |
| 2052 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
| 2053 | |
| 2054 if (rc == NGX_AGAIN) { | |
| 2055 return NGX_AGAIN; | |
| 2056 } | |
| 2057 | |
| 2058 if (rc == NGX_ERROR) { | |
| 2059 return NGX_ERROR; | |
| 2060 } | |
| 2061 | |
| 2062 if (ctx->in) { | |
| 2063 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2064 } | |
| 2065 | |
| 2066 continue; | |
| 2067 } | |
| 2068 | |
| 2069 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
| 2070 | |
| 2071 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
| 2072 | |
| 2073 if (rc == NGX_AGAIN) { | |
| 2074 return NGX_AGAIN; | |
| 2075 } | |
| 2076 | |
| 2077 if (rc == NGX_ERROR) { | |
| 2078 return NGX_ERROR; | |
| 2079 } | |
| 2080 | |
| 2081 if (ctx->in) { | |
| 2082 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2083 } | |
| 2084 | |
| 2085 continue; | |
| 2086 } | |
| 2087 | |
| 2088 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
| 2089 | |
| 2090 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
| 2091 | |
| 2092 if (rc == NGX_AGAIN) { | |
| 2093 return NGX_AGAIN; | |
| 2094 } | |
| 2095 | |
| 2096 if (rc == NGX_ERROR) { | |
| 2097 return NGX_ERROR; | |
| 2098 } | |
| 2099 | |
| 2100 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
| 2101 continue; | |
| 2102 } | |
| 2103 | |
| 2104 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
| 2105 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2106 "upstream sent unexpected push promise frame"); | |
| 2107 return NGX_ERROR; | |
| 2108 } | |
| 2109 | |
| 2110 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
| 2111 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
| 2112 { | |
| 2113 for ( ;; ) { | |
| 2114 | |
| 2115 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
| 2116 | |
| 2117 if (rc == NGX_AGAIN) { | |
| 2118 break; | |
| 2119 } | |
| 2120 | |
| 2121 if (rc == NGX_OK) { | |
| 2122 | |
| 2123 /* a header line has been parsed successfully */ | |
| 2124 | |
| 2125 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2126 "grpc trailer: \"%V: %V\"", | |
| 2127 &ctx->name, &ctx->value); | |
| 2128 | |
| 2129 if (ctx->name.len && ctx->name.data[0] == ':') { | |
| 2130 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2131 "upstream sent invalid " | |
| 2132 "trailer \"%V: %V\"", | |
| 2133 &ctx->name, &ctx->value); | |
| 2134 return NGX_ERROR; | |
| 2135 } | |
| 2136 | |
| 2137 h = ngx_list_push(&u->headers_in.trailers); | |
| 2138 if (h == NULL) { | |
| 2139 return NGX_ERROR; | |
| 2140 } | |
| 2141 | |
| 2142 h->key = ctx->name; | |
| 2143 h->value = ctx->value; | |
| 2144 h->lowcase_key = h->key.data; | |
| 2145 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
| 2146 | |
| 2147 continue; | |
| 2148 } | |
| 2149 | |
| 2150 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
| 2151 | |
| 2152 /* a whole header has been parsed successfully */ | |
| 2153 | |
| 2154 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2155 "grpc trailer done"); | |
| 2156 | |
| 2157 if (ctx->end_stream) { | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2158 ctx->done = 1; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2159 break; |
| 7233 | 2160 } |
| 2161 | |
| 2162 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2163 "upstream sent trailer without " | |
| 2164 "end stream flag"); | |
| 2165 return NGX_ERROR; | |
| 2166 } | |
| 2167 | |
| 2168 /* there was error while a header line parsing */ | |
| 2169 | |
| 2170 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2171 "upstream sent invalid trailer"); | |
| 2172 | |
| 2173 return NGX_ERROR; | |
| 2174 } | |
| 2175 | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2176 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2177 continue; |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2178 } |
|
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2179 |
| 7233 | 2180 /* rc == NGX_AGAIN */ |
| 2181 | |
| 2182 if (ctx->rest == 0) { | |
| 2183 ctx->state = ngx_http_grpc_st_start; | |
| 2184 continue; | |
| 2185 } | |
| 2186 | |
| 2187 return NGX_AGAIN; | |
| 2188 } | |
| 2189 | |
| 2190 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
| 2191 | |
| 2192 /* priority, unknown frames */ | |
| 2193 | |
| 2194 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2195 ctx->rest -= b->last - b->pos; | |
| 2196 b->pos = b->last; | |
| 2197 return NGX_AGAIN; | |
| 2198 } | |
| 2199 | |
| 2200 b->pos += ctx->rest; | |
| 2201 ctx->rest = 0; | |
| 2202 ctx->state = ngx_http_grpc_st_start; | |
| 2203 | |
| 2204 continue; | |
| 2205 } | |
| 2206 | |
| 2207 /* | |
| 2208 * data frame: | |
| 2209 * | |
| 2210 * +---------------+ | |
| 2211 * |Pad Length? (8)| | |
| 2212 * +---------------+-----------------------------------------------+ | |
| 2213 * | Data (*) ... | |
| 2214 * +---------------------------------------------------------------+ | |
| 2215 * | Padding (*) ... | |
| 2216 * +---------------------------------------------------------------+ | |
| 2217 */ | |
| 2218 | |
| 2219 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2220 | |
| 2221 if (ctx->rest == 0) { | |
| 2222 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2223 "upstream sent too short http2 frame"); | |
| 2224 return NGX_ERROR; | |
| 2225 } | |
| 2226 | |
| 2227 if (b->pos == b->last) { | |
| 2228 return NGX_AGAIN; | |
| 2229 } | |
| 2230 | |
| 2231 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
| 2232 ctx->padding = *b->pos++; | |
| 2233 ctx->rest -= 1; | |
| 2234 | |
| 2235 if (ctx->padding > ctx->rest) { | |
| 2236 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2237 "upstream sent http2 frame with too long " | |
| 2238 "padding: %d in frame %uz", | |
| 2239 ctx->padding, ctx->rest); | |
| 2240 return NGX_ERROR; | |
| 2241 } | |
| 2242 | |
| 2243 continue; | |
| 2244 } | |
| 2245 | |
| 2246 if (ctx->rest == ctx->padding) { | |
| 2247 goto done; | |
| 2248 } | |
| 2249 | |
| 2250 if (b->pos == b->last) { | |
| 2251 return NGX_AGAIN; | |
| 2252 } | |
| 2253 | |
| 2254 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
| 2255 if (cl == NULL) { | |
| 2256 return NGX_ERROR; | |
| 2257 } | |
| 2258 | |
| 2259 *ll = cl; | |
| 2260 ll = &cl->next; | |
| 2261 | |
| 2262 buf = cl->buf; | |
| 2263 | |
| 2264 buf->flush = 1; | |
| 2265 buf->memory = 1; | |
| 2266 | |
| 2267 buf->pos = b->pos; | |
| 2268 buf->tag = u->output.tag; | |
| 2269 | |
| 2270 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2271 "grpc output buf %p", buf->pos); | |
| 2272 | |
| 2273 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2274 | |
| 2275 ctx->rest -= b->last - b->pos; | |
| 2276 b->pos = b->last; | |
| 2277 buf->last = b->pos; | |
| 2278 | |
| 2279 return NGX_AGAIN; | |
| 2280 } | |
| 2281 | |
| 2282 b->pos += ctx->rest - ctx->padding; | |
| 2283 buf->last = b->pos; | |
| 2284 ctx->rest = ctx->padding; | |
| 2285 | |
| 2286 done: | |
| 2287 | |
| 2288 if (ctx->padding) { | |
| 2289 ctx->state = ngx_http_grpc_st_padding; | |
| 2290 continue; | |
| 2291 } | |
| 2292 | |
| 2293 ctx->state = ngx_http_grpc_st_start; | |
| 2294 | |
| 2295 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
|
7349
f6047a579ca1
gRPC: improved keepalive handling.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7321
diff
changeset
|
2296 ctx->done = 1; |
| 7233 | 2297 } |
| 2298 } | |
| 2299 | |
| 2300 return NGX_OK; | |
| 2301 } | |
| 2302 | |
| 2303 | |
| 2304 static ngx_int_t | |
| 2305 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2306 ngx_buf_t *b) | |
| 2307 { | |
| 2308 u_char ch, *p; | |
| 2309 ngx_http_grpc_state_e state; | |
| 2310 | |
| 2311 state = ctx->state; | |
| 2312 | |
| 2313 for (p = b->pos; p < b->last; p++) { | |
| 2314 ch = *p; | |
| 2315 | |
| 2316 #if 0 | |
| 2317 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2318 "grpc frame byte: %02Xd, s:%d", ch, state); | |
| 2319 #endif | |
| 2320 | |
| 2321 switch (state) { | |
| 2322 | |
| 2323 case ngx_http_grpc_st_start: | |
| 2324 ctx->rest = ch << 16; | |
| 2325 state = ngx_http_grpc_st_length_2; | |
| 2326 break; | |
| 2327 | |
| 2328 case ngx_http_grpc_st_length_2: | |
| 2329 ctx->rest |= ch << 8; | |
| 2330 state = ngx_http_grpc_st_length_3; | |
| 2331 break; | |
| 2332 | |
| 2333 case ngx_http_grpc_st_length_3: | |
| 2334 ctx->rest |= ch; | |
| 2335 | |
| 2336 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
| 2337 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2338 "upstream sent too large http2 frame: %uz", | |
| 2339 ctx->rest); | |
| 2340 return NGX_ERROR; | |
| 2341 } | |
| 2342 | |
| 2343 state = ngx_http_grpc_st_type; | |
| 2344 break; | |
| 2345 | |
| 2346 case ngx_http_grpc_st_type: | |
| 2347 ctx->type = ch; | |
| 2348 state = ngx_http_grpc_st_flags; | |
| 2349 break; | |
| 2350 | |
| 2351 case ngx_http_grpc_st_flags: | |
| 2352 ctx->flags = ch; | |
| 2353 state = ngx_http_grpc_st_stream_id; | |
| 2354 break; | |
| 2355 | |
| 2356 case ngx_http_grpc_st_stream_id: | |
| 2357 ctx->stream_id = (ch & 0x7f) << 24; | |
| 2358 state = ngx_http_grpc_st_stream_id_2; | |
| 2359 break; | |
| 2360 | |
| 2361 case ngx_http_grpc_st_stream_id_2: | |
| 2362 ctx->stream_id |= ch << 16; | |
| 2363 state = ngx_http_grpc_st_stream_id_3; | |
| 2364 break; | |
| 2365 | |
| 2366 case ngx_http_grpc_st_stream_id_3: | |
| 2367 ctx->stream_id |= ch << 8; | |
| 2368 state = ngx_http_grpc_st_stream_id_4; | |
| 2369 break; | |
| 2370 | |
| 2371 case ngx_http_grpc_st_stream_id_4: | |
| 2372 ctx->stream_id |= ch; | |
| 2373 | |
| 2374 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2375 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
| 2376 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
| 2377 | |
| 2378 b->pos = p + 1; | |
| 2379 | |
| 2380 ctx->state = ngx_http_grpc_st_payload; | |
| 2381 ctx->frame_state = 0; | |
| 2382 | |
| 2383 return NGX_OK; | |
| 2384 | |
| 2385 /* suppress warning */ | |
| 2386 case ngx_http_grpc_st_payload: | |
| 2387 case ngx_http_grpc_st_padding: | |
| 2388 break; | |
| 2389 } | |
| 2390 } | |
| 2391 | |
| 2392 b->pos = p; | |
| 2393 ctx->state = state; | |
| 2394 | |
| 2395 return NGX_AGAIN; | |
| 2396 } | |
| 2397 | |
| 2398 | |
| 2399 static ngx_int_t | |
| 2400 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2401 ngx_buf_t *b) | |
| 2402 { | |
| 2403 u_char ch, *p, *last; | |
| 2404 size_t min; | |
| 2405 ngx_int_t rc; | |
| 2406 enum { | |
| 2407 sw_start = 0, | |
| 2408 sw_padding_length, | |
| 2409 sw_dependency, | |
| 2410 sw_dependency_2, | |
| 2411 sw_dependency_3, | |
| 2412 sw_dependency_4, | |
| 2413 sw_weight, | |
| 2414 sw_fragment, | |
| 2415 sw_padding | |
| 2416 } state; | |
| 2417 | |
| 2418 state = ctx->frame_state; | |
| 2419 | |
| 2420 if (state == sw_start) { | |
| 2421 | |
| 2422 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2423 "grpc parse header: start"); | |
| 2424 | |
| 2425 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
| 2426 ctx->parsing_headers = 1; | |
| 2427 ctx->fragment_state = 0; | |
| 2428 | |
| 2429 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
| 2430 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
| 2431 | |
| 2432 if (ctx->rest < min) { | |
| 2433 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2434 "upstream sent headers frame " | |
| 2435 "with invalid length: %uz", | |
| 2436 ctx->rest); | |
| 2437 return NGX_ERROR; | |
| 2438 } | |
| 2439 | |
| 2440 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
| 2441 ctx->end_stream = 1; | |
| 2442 } | |
| 2443 | |
| 2444 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
| 2445 state = sw_padding_length; | |
| 2446 | |
| 2447 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2448 state = sw_dependency; | |
| 2449 | |
| 2450 } else { | |
| 2451 state = sw_fragment; | |
| 2452 } | |
| 2453 | |
| 2454 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
| 2455 state = sw_fragment; | |
| 2456 } | |
| 2457 | |
| 2458 ctx->padding = 0; | |
|
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2459 ctx->frame_state = state; |
| 7233 | 2460 } |
| 2461 | |
| 2462 if (state < sw_fragment) { | |
| 2463 | |
| 2464 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2465 last = b->last; | |
| 2466 | |
| 2467 } else { | |
| 2468 last = b->pos + ctx->rest; | |
| 2469 } | |
| 2470 | |
| 2471 for (p = b->pos; p < last; p++) { | |
| 2472 ch = *p; | |
| 2473 | |
| 2474 #if 0 | |
| 2475 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2476 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2477 #endif | |
| 2478 | |
| 2479 /* | |
| 2480 * headers frame: | |
| 2481 * | |
| 2482 * +---------------+ | |
| 2483 * |Pad Length? (8)| | |
| 2484 * +-+-------------+----------------------------------------------+ | |
| 2485 * |E| Stream Dependency? (31) | | |
| 2486 * +-+-------------+----------------------------------------------+ | |
| 2487 * | Weight? (8) | | |
| 2488 * +-+-------------+----------------------------------------------+ | |
| 2489 * | Header Block Fragment (*) ... | |
| 2490 * +--------------------------------------------------------------+ | |
| 2491 * | Padding (*) ... | |
| 2492 * +--------------------------------------------------------------+ | |
| 2493 */ | |
| 2494 | |
| 2495 switch (state) { | |
| 2496 | |
| 2497 case sw_padding_length: | |
| 2498 | |
| 2499 ctx->padding = ch; | |
| 2500 | |
| 2501 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
| 2502 state = sw_dependency; | |
| 2503 break; | |
| 2504 } | |
| 2505 | |
| 2506 goto fragment; | |
| 2507 | |
| 2508 case sw_dependency: | |
| 2509 state = sw_dependency_2; | |
| 2510 break; | |
| 2511 | |
| 2512 case sw_dependency_2: | |
| 2513 state = sw_dependency_3; | |
| 2514 break; | |
| 2515 | |
| 2516 case sw_dependency_3: | |
| 2517 state = sw_dependency_4; | |
| 2518 break; | |
| 2519 | |
| 2520 case sw_dependency_4: | |
| 2521 state = sw_weight; | |
| 2522 break; | |
| 2523 | |
| 2524 case sw_weight: | |
| 2525 goto fragment; | |
| 2526 | |
| 2527 /* suppress warning */ | |
| 2528 case sw_start: | |
| 2529 case sw_fragment: | |
| 2530 case sw_padding: | |
| 2531 break; | |
| 2532 } | |
| 2533 } | |
| 2534 | |
| 2535 ctx->rest -= p - b->pos; | |
| 2536 b->pos = p; | |
| 2537 | |
| 2538 ctx->frame_state = state; | |
| 2539 return NGX_AGAIN; | |
| 2540 | |
| 2541 fragment: | |
| 2542 | |
| 2543 p++; | |
| 2544 ctx->rest -= p - b->pos; | |
| 2545 b->pos = p; | |
| 2546 | |
| 2547 if (ctx->padding > ctx->rest) { | |
| 2548 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2549 "upstream sent http2 frame with too long " | |
| 2550 "padding: %d in frame %uz", | |
| 2551 ctx->padding, ctx->rest); | |
| 2552 return NGX_ERROR; | |
| 2553 } | |
| 2554 | |
| 2555 state = sw_fragment; | |
| 2556 ctx->frame_state = state; | |
| 2557 } | |
| 2558 | |
| 2559 if (state == sw_fragment) { | |
| 2560 | |
| 2561 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
| 2562 | |
| 2563 if (rc == NGX_AGAIN) { | |
| 2564 return NGX_AGAIN; | |
| 2565 } | |
| 2566 | |
| 2567 if (rc == NGX_ERROR) { | |
| 2568 return NGX_ERROR; | |
| 2569 } | |
| 2570 | |
| 2571 if (rc == NGX_OK) { | |
| 2572 return NGX_OK; | |
| 2573 } | |
| 2574 | |
| 2575 /* rc == NGX_DONE */ | |
| 2576 | |
| 2577 state = sw_padding; | |
| 2578 ctx->frame_state = state; | |
| 2579 } | |
| 2580 | |
| 2581 if (state == sw_padding) { | |
| 2582 | |
| 2583 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 2584 | |
| 2585 ctx->rest -= b->last - b->pos; | |
| 2586 b->pos = b->last; | |
| 2587 | |
| 2588 return NGX_AGAIN; | |
| 2589 } | |
| 2590 | |
| 2591 b->pos += ctx->rest; | |
| 2592 ctx->rest = 0; | |
| 2593 | |
| 2594 ctx->state = ngx_http_grpc_st_start; | |
| 2595 | |
| 2596 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
| 2597 | |
| 2598 if (ctx->fragment_state) { | |
| 2599 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2600 "upstream sent truncated http2 header"); | |
| 2601 return NGX_ERROR; | |
| 2602 } | |
| 2603 | |
| 2604 ctx->parsing_headers = 0; | |
| 2605 | |
| 2606 return NGX_HTTP_PARSE_HEADER_DONE; | |
| 2607 } | |
| 2608 | |
| 2609 return NGX_AGAIN; | |
| 2610 } | |
| 2611 | |
| 2612 /* unreachable */ | |
| 2613 | |
| 2614 return NGX_ERROR; | |
| 2615 } | |
| 2616 | |
| 2617 | |
| 2618 static ngx_int_t | |
| 2619 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 2620 ngx_buf_t *b) | |
| 2621 { | |
| 2622 u_char ch, *p, *last; | |
| 2623 size_t size; | |
| 2624 ngx_uint_t index, size_update; | |
| 2625 enum { | |
| 2626 sw_start = 0, | |
| 2627 sw_index, | |
| 2628 sw_name_length, | |
| 2629 sw_name_length_2, | |
| 2630 sw_name_length_3, | |
| 2631 sw_name_length_4, | |
| 2632 sw_name, | |
| 2633 sw_name_bytes, | |
| 2634 sw_value_length, | |
| 2635 sw_value_length_2, | |
| 2636 sw_value_length_3, | |
| 2637 sw_value_length_4, | |
| 2638 sw_value, | |
| 2639 sw_value_bytes | |
| 2640 } state; | |
| 2641 | |
| 2642 /* header block fragment */ | |
| 2643 | |
| 2644 #if 0 | |
| 2645 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2646 "grpc header fragment %p:%p rest:%uz", | |
| 2647 b->pos, b->last, ctx->rest); | |
| 2648 #endif | |
| 2649 | |
| 2650 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
| 2651 last = b->last; | |
| 2652 | |
| 2653 } else { | |
| 2654 last = b->pos + ctx->rest - ctx->padding; | |
| 2655 } | |
| 2656 | |
| 2657 state = ctx->fragment_state; | |
| 2658 | |
| 2659 for (p = b->pos; p < last; p++) { | |
| 2660 ch = *p; | |
| 2661 | |
| 2662 #if 0 | |
| 2663 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2664 "grpc header byte: %02Xd s:%d", ch, state); | |
| 2665 #endif | |
| 2666 | |
| 2667 switch (state) { | |
| 2668 | |
| 2669 case sw_start: | |
| 2670 ctx->index = 0; | |
| 2671 | |
| 2672 if ((ch & 0x80) == 0x80) { | |
| 2673 /* | |
| 2674 * indexed header: | |
| 2675 * | |
| 2676 * 0 1 2 3 4 5 6 7 | |
| 2677 * +---+---+---+---+---+---+---+---+ | |
| 2678 * | 1 | Index (7+) | | |
| 2679 * +---+---------------------------+ | |
| 2680 */ | |
| 2681 | |
| 2682 index = ch & ~0x80; | |
| 2683 | |
| 2684 if (index == 0 || index > 61) { | |
| 2685 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2686 "upstream sent invalid http2 " | |
| 2687 "table index: %ui", index); | |
| 2688 return NGX_ERROR; | |
| 2689 } | |
| 2690 | |
| 2691 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2692 "grpc indexed header: %ui", index); | |
| 2693 | |
| 2694 ctx->index = index; | |
| 2695 ctx->literal = 0; | |
| 2696 | |
| 2697 goto done; | |
| 2698 | |
| 2699 } else if ((ch & 0xc0) == 0x40) { | |
| 2700 /* | |
| 2701 * literal header with incremental indexing: | |
| 2702 * | |
| 2703 * 0 1 2 3 4 5 6 7 | |
| 2704 * +---+---+---+---+---+---+---+---+ | |
| 2705 * | 0 | 1 | Index (6+) | | |
| 2706 * +---+---+-----------------------+ | |
| 2707 * | H | Value Length (7+) | | |
| 2708 * +---+---------------------------+ | |
| 2709 * | Value String (Length octets) | | |
| 2710 * +-------------------------------+ | |
| 2711 * | |
| 2712 * 0 1 2 3 4 5 6 7 | |
| 2713 * +---+---+---+---+---+---+---+---+ | |
| 2714 * | 0 | 1 | 0 | | |
| 2715 * +---+---+-----------------------+ | |
| 2716 * | H | Name Length (7+) | | |
| 2717 * +---+---------------------------+ | |
| 2718 * | Name String (Length octets) | | |
| 2719 * +---+---------------------------+ | |
| 2720 * | H | Value Length (7+) | | |
| 2721 * +---+---------------------------+ | |
| 2722 * | Value String (Length octets) | | |
| 2723 * +-------------------------------+ | |
| 2724 */ | |
| 2725 | |
| 2726 index = ch & ~0xc0; | |
| 2727 | |
| 2728 if (index > 61) { | |
| 2729 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2730 "upstream sent invalid http2 " | |
| 2731 "table index: %ui", index); | |
| 2732 return NGX_ERROR; | |
| 2733 } | |
| 2734 | |
| 2735 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2736 "grpc literal header: %ui", index); | |
| 2737 | |
| 2738 if (index == 0) { | |
| 2739 state = sw_name_length; | |
| 2740 break; | |
| 2741 } | |
| 2742 | |
| 2743 ctx->index = index; | |
| 2744 ctx->literal = 1; | |
| 2745 | |
| 2746 state = sw_value_length; | |
| 2747 break; | |
| 2748 | |
| 2749 } else if ((ch & 0xe0) == 0x20) { | |
| 2750 /* | |
| 2751 * dynamic table size update: | |
| 2752 * | |
| 2753 * 0 1 2 3 4 5 6 7 | |
| 2754 * +---+---+---+---+---+---+---+---+ | |
| 2755 * | 0 | 0 | 1 | Max size (5+) | | |
| 2756 * +---+---------------------------+ | |
| 2757 */ | |
| 2758 | |
| 2759 size_update = ch & ~0xe0; | |
| 2760 | |
| 2761 if (size_update > 0) { | |
| 2762 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2763 "upstream sent invalid http2 " | |
| 2764 "dynamic table size update: %ui", | |
| 2765 size_update); | |
| 2766 return NGX_ERROR; | |
| 2767 } | |
| 2768 | |
| 2769 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2770 "grpc table size update: %ui", size_update); | |
| 2771 | |
| 2772 break; | |
| 2773 | |
| 2774 } else if ((ch & 0xf0) == 0x10) { | |
| 2775 /* | |
| 2776 * literal header field never indexed: | |
| 2777 * | |
| 2778 * 0 1 2 3 4 5 6 7 | |
| 2779 * +---+---+---+---+---+---+---+---+ | |
| 2780 * | 0 | 0 | 0 | 1 | Index (4+) | | |
| 2781 * +---+---+-----------------------+ | |
| 2782 * | H | Value Length (7+) | | |
| 2783 * +---+---------------------------+ | |
| 2784 * | Value String (Length octets) | | |
| 2785 * +-------------------------------+ | |
| 2786 * | |
| 2787 * 0 1 2 3 4 5 6 7 | |
| 2788 * +---+---+---+---+---+---+---+---+ | |
| 2789 * | 0 | 0 | 0 | 1 | 0 | | |
| 2790 * +---+---+-----------------------+ | |
| 2791 * | H | Name Length (7+) | | |
| 2792 * +---+---------------------------+ | |
| 2793 * | Name String (Length octets) | | |
| 2794 * +---+---------------------------+ | |
| 2795 * | H | Value Length (7+) | | |
| 2796 * +---+---------------------------+ | |
| 2797 * | Value String (Length octets) | | |
| 2798 * +-------------------------------+ | |
| 2799 */ | |
| 2800 | |
| 2801 index = ch & ~0xf0; | |
| 2802 | |
| 2803 if (index == 0x0f) { | |
| 2804 ctx->index = index; | |
| 2805 ctx->literal = 1; | |
| 2806 state = sw_index; | |
| 2807 break; | |
| 2808 } | |
| 2809 | |
| 2810 if (index == 0) { | |
| 2811 state = sw_name_length; | |
| 2812 break; | |
| 2813 } | |
| 2814 | |
| 2815 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2816 "grpc literal header never indexed: %ui", | |
| 2817 index); | |
| 2818 | |
| 2819 ctx->index = index; | |
| 2820 ctx->literal = 1; | |
| 2821 | |
| 2822 state = sw_value_length; | |
| 2823 break; | |
| 2824 | |
| 2825 } else if ((ch & 0xf0) == 0x00) { | |
| 2826 /* | |
| 2827 * literal header field without indexing: | |
| 2828 * | |
| 2829 * 0 1 2 3 4 5 6 7 | |
| 2830 * +---+---+---+---+---+---+---+---+ | |
| 2831 * | 0 | 0 | 0 | 0 | Index (4+) | | |
| 2832 * +---+---+-----------------------+ | |
| 2833 * | H | Value Length (7+) | | |
| 2834 * +---+---------------------------+ | |
| 2835 * | Value String (Length octets) | | |
| 2836 * +-------------------------------+ | |
| 2837 * | |
| 2838 * 0 1 2 3 4 5 6 7 | |
| 2839 * +---+---+---+---+---+---+---+---+ | |
| 2840 * | 0 | 0 | 0 | 0 | 0 | | |
| 2841 * +---+---+-----------------------+ | |
| 2842 * | H | Name Length (7+) | | |
| 2843 * +---+---------------------------+ | |
| 2844 * | Name String (Length octets) | | |
| 2845 * +---+---------------------------+ | |
| 2846 * | H | Value Length (7+) | | |
| 2847 * +---+---------------------------+ | |
| 2848 * | Value String (Length octets) | | |
| 2849 * +-------------------------------+ | |
| 2850 */ | |
| 2851 | |
| 2852 index = ch & ~0xf0; | |
| 2853 | |
| 2854 if (index == 0x0f) { | |
| 2855 ctx->index = index; | |
| 2856 ctx->literal = 1; | |
| 2857 state = sw_index; | |
| 2858 break; | |
| 2859 } | |
| 2860 | |
| 2861 if (index == 0) { | |
| 2862 state = sw_name_length; | |
| 2863 break; | |
| 2864 } | |
| 2865 | |
| 2866 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2867 "grpc literal header without indexing: %ui", | |
| 2868 index); | |
| 2869 | |
| 2870 ctx->index = index; | |
| 2871 ctx->literal = 1; | |
| 2872 | |
| 2873 state = sw_value_length; | |
| 2874 break; | |
| 2875 } | |
| 2876 | |
| 2877 /* not reached */ | |
| 2878 | |
| 2879 return NGX_ERROR; | |
| 2880 | |
| 2881 case sw_index: | |
| 2882 ctx->index = ctx->index + (ch & ~0x80); | |
| 2883 | |
| 2884 if (ch & 0x80) { | |
| 2885 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2886 "upstream sent http2 table index " | |
| 2887 "with continuation flag"); | |
| 2888 return NGX_ERROR; | |
| 2889 } | |
| 2890 | |
| 2891 if (ctx->index > 61) { | |
| 2892 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2893 "upstream sent invalid http2 " | |
| 2894 "table index: %ui", ctx->index); | |
| 2895 return NGX_ERROR; | |
| 2896 } | |
| 2897 | |
| 2898 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2899 "grpc header index: %ui", ctx->index); | |
| 2900 | |
| 2901 state = sw_value_length; | |
| 2902 break; | |
| 2903 | |
| 2904 case sw_name_length: | |
| 2905 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 2906 ctx->field_length = ch & ~0x80; | |
| 2907 | |
| 2908 if (ctx->field_length == 0x7f) { | |
| 2909 state = sw_name_length_2; | |
| 2910 break; | |
| 2911 } | |
| 2912 | |
| 2913 if (ctx->field_length == 0) { | |
| 2914 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2915 "upstream sent zero http2 " | |
| 2916 "header name length"); | |
| 2917 return NGX_ERROR; | |
| 2918 } | |
| 2919 | |
| 2920 state = sw_name; | |
| 2921 break; | |
| 2922 | |
| 2923 case sw_name_length_2: | |
| 2924 ctx->field_length += ch & ~0x80; | |
| 2925 | |
| 2926 if (ch & 0x80) { | |
| 2927 state = sw_name_length_3; | |
| 2928 break; | |
| 2929 } | |
| 2930 | |
| 2931 state = sw_name; | |
| 2932 break; | |
| 2933 | |
| 2934 case sw_name_length_3: | |
| 2935 ctx->field_length += (ch & ~0x80) << 7; | |
| 2936 | |
| 2937 if (ch & 0x80) { | |
| 2938 state = sw_name_length_4; | |
| 2939 break; | |
| 2940 } | |
| 2941 | |
| 2942 state = sw_name; | |
| 2943 break; | |
| 2944 | |
| 2945 case sw_name_length_4: | |
| 2946 ctx->field_length += (ch & ~0x80) << 14; | |
| 2947 | |
| 2948 if (ch & 0x80) { | |
| 2949 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2950 "upstream sent too large http2 " | |
| 2951 "header name length"); | |
| 2952 return NGX_ERROR; | |
| 2953 } | |
| 2954 | |
| 2955 state = sw_name; | |
| 2956 break; | |
| 2957 | |
| 2958 case sw_name: | |
| 2959 ctx->name.len = ctx->field_huffman ? | |
| 2960 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 2961 | |
| 2962 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
| 2963 if (ctx->name.data == NULL) { | |
| 2964 return NGX_ERROR; | |
| 2965 } | |
| 2966 | |
| 2967 ctx->field_end = ctx->name.data; | |
| 2968 ctx->field_rest = ctx->field_length; | |
| 2969 ctx->field_state = 0; | |
| 2970 | |
| 2971 state = sw_name_bytes; | |
| 2972 | |
| 2973 /* fall through */ | |
| 2974 | |
| 2975 case sw_name_bytes: | |
| 2976 | |
| 2977 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 2978 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
| 2979 ctx->field_length, | |
| 2980 ctx->field_huffman, | |
| 2981 last - p, | |
| 2982 ctx->rest - (p - b->pos)); | |
| 2983 | |
| 2984 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 2985 ctx->field_rest -= size; | |
| 2986 | |
| 2987 if (ctx->field_huffman) { | |
| 2988 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 2989 &ctx->field_end, | |
| 2990 ctx->field_rest == 0, | |
| 2991 r->connection->log) | |
| 2992 != NGX_OK) | |
| 2993 { | |
| 2994 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 2995 "upstream sent invalid encoded header"); | |
| 2996 return NGX_ERROR; | |
| 2997 } | |
| 2998 | |
| 2999 ctx->name.len = ctx->field_end - ctx->name.data; | |
| 3000 ctx->name.data[ctx->name.len] = '\0'; | |
| 3001 | |
| 3002 } else { | |
|
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3003 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
| 7233 | 3004 ctx->name.data[ctx->name.len] = '\0'; |
| 3005 } | |
| 3006 | |
| 3007 p += size - 1; | |
| 3008 | |
| 3009 if (ctx->field_rest == 0) { | |
| 3010 state = sw_value_length; | |
| 3011 } | |
| 3012 | |
| 3013 break; | |
| 3014 | |
| 3015 case sw_value_length: | |
| 3016 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
| 3017 ctx->field_length = ch & ~0x80; | |
| 3018 | |
| 3019 if (ctx->field_length == 0x7f) { | |
| 3020 state = sw_value_length_2; | |
| 3021 break; | |
| 3022 } | |
| 3023 | |
| 3024 if (ctx->field_length == 0) { | |
| 3025 ngx_str_set(&ctx->value, ""); | |
| 3026 goto done; | |
| 3027 } | |
| 3028 | |
| 3029 state = sw_value; | |
| 3030 break; | |
| 3031 | |
| 3032 case sw_value_length_2: | |
| 3033 ctx->field_length += ch & ~0x80; | |
| 3034 | |
| 3035 if (ch & 0x80) { | |
| 3036 state = sw_value_length_3; | |
| 3037 break; | |
| 3038 } | |
| 3039 | |
| 3040 state = sw_value; | |
| 3041 break; | |
| 3042 | |
| 3043 case sw_value_length_3: | |
| 3044 ctx->field_length += (ch & ~0x80) << 7; | |
| 3045 | |
| 3046 if (ch & 0x80) { | |
| 3047 state = sw_value_length_4; | |
| 3048 break; | |
| 3049 } | |
| 3050 | |
| 3051 state = sw_value; | |
| 3052 break; | |
| 3053 | |
| 3054 case sw_value_length_4: | |
| 3055 ctx->field_length += (ch & ~0x80) << 14; | |
| 3056 | |
| 3057 if (ch & 0x80) { | |
| 3058 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3059 "upstream sent too large http2 " | |
| 3060 "header value length"); | |
| 3061 return NGX_ERROR; | |
| 3062 } | |
| 3063 | |
| 3064 state = sw_value; | |
| 3065 break; | |
| 3066 | |
| 3067 case sw_value: | |
| 3068 ctx->value.len = ctx->field_huffman ? | |
| 3069 ctx->field_length * 8 / 5 : ctx->field_length; | |
| 3070 | |
| 3071 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
| 3072 if (ctx->value.data == NULL) { | |
| 3073 return NGX_ERROR; | |
| 3074 } | |
| 3075 | |
| 3076 ctx->field_end = ctx->value.data; | |
| 3077 ctx->field_rest = ctx->field_length; | |
| 3078 ctx->field_state = 0; | |
| 3079 | |
| 3080 state = sw_value_bytes; | |
| 3081 | |
| 3082 /* fall through */ | |
| 3083 | |
| 3084 case sw_value_bytes: | |
| 3085 | |
| 3086 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3087 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
| 3088 ctx->field_length, | |
| 3089 ctx->field_huffman, | |
| 3090 last - p, | |
| 3091 ctx->rest - (p - b->pos)); | |
| 3092 | |
| 3093 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
| 3094 ctx->field_rest -= size; | |
| 3095 | |
| 3096 if (ctx->field_huffman) { | |
| 3097 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
| 3098 &ctx->field_end, | |
| 3099 ctx->field_rest == 0, | |
| 3100 r->connection->log) | |
| 3101 != NGX_OK) | |
| 3102 { | |
| 3103 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3104 "upstream sent invalid encoded header"); | |
| 3105 return NGX_ERROR; | |
| 3106 } | |
| 3107 | |
| 3108 ctx->value.len = ctx->field_end - ctx->value.data; | |
| 3109 ctx->value.data[ctx->value.len] = '\0'; | |
| 3110 | |
| 3111 } else { | |
|
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3112 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
| 7233 | 3113 ctx->value.data[ctx->value.len] = '\0'; |
| 3114 } | |
| 3115 | |
| 3116 p += size - 1; | |
| 3117 | |
| 3118 if (ctx->field_rest == 0) { | |
| 3119 goto done; | |
| 3120 } | |
| 3121 | |
| 3122 break; | |
| 3123 } | |
| 3124 | |
| 3125 continue; | |
| 3126 | |
| 3127 done: | |
| 3128 | |
| 3129 p++; | |
| 3130 ctx->rest -= p - b->pos; | |
| 3131 ctx->fragment_state = sw_start; | |
| 3132 b->pos = p; | |
| 3133 | |
| 3134 if (ctx->index) { | |
| 3135 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
| 3136 } | |
| 3137 | |
| 3138 if (ctx->index && !ctx->literal) { | |
| 3139 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
| 3140 } | |
| 3141 | |
| 3142 if (!ctx->index) { | |
| 3143 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
| 3144 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3145 "upstream sent invalid header: \"%V: %V\"", | |
| 3146 &ctx->name, &ctx->value); | |
| 3147 return NGX_ERROR; | |
| 3148 } | |
| 3149 } | |
| 3150 | |
| 3151 if (!ctx->index || ctx->literal) { | |
| 3152 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
| 3153 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3154 "upstream sent invalid header: \"%V: %V\"", | |
| 3155 &ctx->name, &ctx->value); | |
| 3156 return NGX_ERROR; | |
| 3157 } | |
| 3158 } | |
| 3159 | |
| 3160 return NGX_OK; | |
| 3161 } | |
| 3162 | |
| 3163 ctx->rest -= p - b->pos; | |
| 3164 ctx->fragment_state = state; | |
| 3165 b->pos = p; | |
| 3166 | |
| 3167 if (ctx->rest > ctx->padding) { | |
| 3168 return NGX_AGAIN; | |
| 3169 } | |
| 3170 | |
| 3171 return NGX_DONE; | |
| 3172 } | |
| 3173 | |
| 3174 | |
| 3175 static ngx_int_t | |
| 3176 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
| 3177 { | |
| 3178 u_char ch; | |
| 3179 ngx_uint_t i; | |
| 3180 | |
| 3181 for (i = 0; i < s->len; i++) { | |
| 3182 ch = s->data[i]; | |
| 3183 | |
| 3184 if (ch == ':' && i > 0) { | |
| 3185 return NGX_ERROR; | |
| 3186 } | |
| 3187 | |
| 3188 if (ch >= 'A' && ch <= 'Z') { | |
| 3189 return NGX_ERROR; | |
| 3190 } | |
| 3191 | |
| 3192 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3193 return NGX_ERROR; | |
| 3194 } | |
| 3195 } | |
| 3196 | |
| 3197 return NGX_OK; | |
| 3198 } | |
| 3199 | |
| 3200 | |
| 3201 static ngx_int_t | |
| 3202 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
| 3203 { | |
| 3204 u_char ch; | |
| 3205 ngx_uint_t i; | |
| 3206 | |
| 3207 for (i = 0; i < s->len; i++) { | |
| 3208 ch = s->data[i]; | |
| 3209 | |
| 3210 if (ch == '\0' || ch == CR || ch == LF) { | |
| 3211 return NGX_ERROR; | |
| 3212 } | |
| 3213 } | |
| 3214 | |
| 3215 return NGX_OK; | |
| 3216 } | |
| 3217 | |
| 3218 | |
| 3219 static ngx_int_t | |
| 3220 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3221 ngx_buf_t *b) | |
| 3222 { | |
| 3223 u_char ch, *p, *last; | |
| 3224 enum { | |
| 3225 sw_start = 0, | |
| 3226 sw_error_2, | |
| 3227 sw_error_3, | |
| 3228 sw_error_4 | |
| 3229 } state; | |
| 3230 | |
| 3231 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3232 last = b->last; | |
| 3233 | |
| 3234 } else { | |
| 3235 last = b->pos + ctx->rest; | |
| 3236 } | |
| 3237 | |
| 3238 state = ctx->frame_state; | |
| 3239 | |
| 3240 if (state == sw_start) { | |
| 3241 if (ctx->rest != 4) { | |
| 3242 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3243 "upstream sent rst stream frame " | |
| 3244 "with invalid length: %uz", | |
| 3245 ctx->rest); | |
| 3246 return NGX_ERROR; | |
| 3247 } | |
| 3248 } | |
| 3249 | |
| 3250 for (p = b->pos; p < last; p++) { | |
| 3251 ch = *p; | |
| 3252 | |
| 3253 #if 0 | |
| 3254 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3255 "grpc rst byte: %02Xd s:%d", ch, state); | |
| 3256 #endif | |
| 3257 | |
| 3258 switch (state) { | |
| 3259 | |
| 3260 case sw_start: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3261 ctx->error = (ngx_uint_t) ch << 24; |
| 7233 | 3262 state = sw_error_2; |
| 3263 break; | |
| 3264 | |
| 3265 case sw_error_2: | |
| 3266 ctx->error |= ch << 16; | |
| 3267 state = sw_error_3; | |
| 3268 break; | |
| 3269 | |
| 3270 case sw_error_3: | |
| 3271 ctx->error |= ch << 8; | |
| 3272 state = sw_error_4; | |
| 3273 break; | |
| 3274 | |
| 3275 case sw_error_4: | |
| 3276 ctx->error |= ch; | |
| 3277 state = sw_start; | |
| 3278 | |
| 3279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3280 "grpc error: %ui", ctx->error); | |
| 3281 | |
| 3282 break; | |
| 3283 } | |
| 3284 } | |
| 3285 | |
| 3286 ctx->rest -= p - b->pos; | |
| 3287 ctx->frame_state = state; | |
| 3288 b->pos = p; | |
| 3289 | |
| 3290 if (ctx->rest > 0) { | |
| 3291 return NGX_AGAIN; | |
| 3292 } | |
| 3293 | |
| 3294 return NGX_OK; | |
| 3295 } | |
| 3296 | |
| 3297 | |
| 3298 static ngx_int_t | |
| 3299 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3300 ngx_buf_t *b) | |
| 3301 { | |
| 3302 u_char ch, *p, *last; | |
| 3303 enum { | |
| 3304 sw_start = 0, | |
| 3305 sw_last_stream_id_2, | |
| 3306 sw_last_stream_id_3, | |
| 3307 sw_last_stream_id_4, | |
| 3308 sw_error, | |
| 3309 sw_error_2, | |
| 3310 sw_error_3, | |
| 3311 sw_error_4, | |
| 3312 sw_debug | |
| 3313 } state; | |
| 3314 | |
| 3315 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3316 last = b->last; | |
| 3317 | |
| 3318 } else { | |
| 3319 last = b->pos + ctx->rest; | |
| 3320 } | |
| 3321 | |
| 3322 state = ctx->frame_state; | |
| 3323 | |
| 3324 if (state == sw_start) { | |
| 3325 | |
| 3326 if (ctx->stream_id) { | |
| 3327 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3328 "upstream sent goaway frame " | |
| 3329 "with non-zero stream id: %ui", | |
| 3330 ctx->stream_id); | |
| 3331 return NGX_ERROR; | |
| 3332 } | |
| 3333 | |
| 3334 if (ctx->rest < 8) { | |
| 3335 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3336 "upstream sent goaway frame " | |
| 3337 "with invalid length: %uz", | |
| 3338 ctx->rest); | |
| 3339 return NGX_ERROR; | |
| 3340 } | |
| 3341 } | |
| 3342 | |
| 3343 for (p = b->pos; p < last; p++) { | |
| 3344 ch = *p; | |
| 3345 | |
| 3346 #if 0 | |
| 3347 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3348 "grpc goaway byte: %02Xd s:%d", ch, state); | |
| 3349 #endif | |
| 3350 | |
| 3351 switch (state) { | |
| 3352 | |
| 3353 case sw_start: | |
| 3354 ctx->stream_id = (ch & 0x7f) << 24; | |
| 3355 state = sw_last_stream_id_2; | |
| 3356 break; | |
| 3357 | |
| 3358 case sw_last_stream_id_2: | |
| 3359 ctx->stream_id |= ch << 16; | |
| 3360 state = sw_last_stream_id_3; | |
| 3361 break; | |
| 3362 | |
| 3363 case sw_last_stream_id_3: | |
| 3364 ctx->stream_id |= ch << 8; | |
| 3365 state = sw_last_stream_id_4; | |
| 3366 break; | |
| 3367 | |
| 3368 case sw_last_stream_id_4: | |
| 3369 ctx->stream_id |= ch; | |
| 3370 state = sw_error; | |
| 3371 break; | |
| 3372 | |
| 3373 case sw_error: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3374 ctx->error = (ngx_uint_t) ch << 24; |
| 7233 | 3375 state = sw_error_2; |
| 3376 break; | |
| 3377 | |
| 3378 case sw_error_2: | |
| 3379 ctx->error |= ch << 16; | |
| 3380 state = sw_error_3; | |
| 3381 break; | |
| 3382 | |
| 3383 case sw_error_3: | |
| 3384 ctx->error |= ch << 8; | |
| 3385 state = sw_error_4; | |
| 3386 break; | |
| 3387 | |
| 3388 case sw_error_4: | |
| 3389 ctx->error |= ch; | |
| 3390 state = sw_debug; | |
| 3391 break; | |
| 3392 | |
| 3393 case sw_debug: | |
| 3394 break; | |
| 3395 } | |
| 3396 } | |
| 3397 | |
| 3398 ctx->rest -= p - b->pos; | |
| 3399 ctx->frame_state = state; | |
| 3400 b->pos = p; | |
| 3401 | |
| 3402 if (ctx->rest > 0) { | |
| 3403 return NGX_AGAIN; | |
| 3404 } | |
| 3405 | |
| 3406 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3407 "grpc goaway: %ui, stream %ui", | |
| 3408 ctx->error, ctx->stream_id); | |
| 3409 | |
| 3410 ctx->state = ngx_http_grpc_st_start; | |
| 3411 | |
| 3412 return NGX_OK; | |
| 3413 } | |
| 3414 | |
| 3415 | |
| 3416 static ngx_int_t | |
| 3417 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
| 3418 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3419 { | |
| 3420 u_char ch, *p, *last; | |
| 3421 enum { | |
| 3422 sw_start = 0, | |
| 3423 sw_size_2, | |
| 3424 sw_size_3, | |
| 3425 sw_size_4 | |
| 3426 } state; | |
| 3427 | |
| 3428 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3429 last = b->last; | |
| 3430 | |
| 3431 } else { | |
| 3432 last = b->pos + ctx->rest; | |
| 3433 } | |
| 3434 | |
| 3435 state = ctx->frame_state; | |
| 3436 | |
| 3437 if (state == sw_start) { | |
| 3438 if (ctx->rest != 4) { | |
| 3439 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3440 "upstream sent window update frame " | |
| 3441 "with invalid length: %uz", | |
| 3442 ctx->rest); | |
| 3443 return NGX_ERROR; | |
| 3444 } | |
| 3445 } | |
| 3446 | |
| 3447 for (p = b->pos; p < last; p++) { | |
| 3448 ch = *p; | |
| 3449 | |
| 3450 #if 0 | |
| 3451 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3452 "grpc window update byte: %02Xd s:%d", ch, state); | |
| 3453 #endif | |
| 3454 | |
| 3455 switch (state) { | |
| 3456 | |
| 3457 case sw_start: | |
| 3458 ctx->window_update = (ch & 0x7f) << 24; | |
| 3459 state = sw_size_2; | |
| 3460 break; | |
| 3461 | |
| 3462 case sw_size_2: | |
| 3463 ctx->window_update |= ch << 16; | |
| 3464 state = sw_size_3; | |
| 3465 break; | |
| 3466 | |
| 3467 case sw_size_3: | |
| 3468 ctx->window_update |= ch << 8; | |
| 3469 state = sw_size_4; | |
| 3470 break; | |
| 3471 | |
| 3472 case sw_size_4: | |
| 3473 ctx->window_update |= ch; | |
| 3474 state = sw_start; | |
| 3475 break; | |
| 3476 } | |
| 3477 } | |
| 3478 | |
| 3479 ctx->rest -= p - b->pos; | |
| 3480 ctx->frame_state = state; | |
| 3481 b->pos = p; | |
| 3482 | |
| 3483 if (ctx->rest > 0) { | |
| 3484 return NGX_AGAIN; | |
| 3485 } | |
| 3486 | |
| 3487 ctx->state = ngx_http_grpc_st_start; | |
| 3488 | |
| 3489 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3490 "grpc window update: %ui", ctx->window_update); | |
| 3491 | |
| 3492 if (ctx->stream_id) { | |
| 3493 | |
| 3494 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3495 - ctx->send_window) | |
| 3496 { | |
| 3497 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3498 "upstream sent too large window update"); | |
| 3499 return NGX_ERROR; | |
| 3500 } | |
| 3501 | |
| 3502 ctx->send_window += ctx->window_update; | |
| 3503 | |
| 3504 } else { | |
| 3505 | |
| 3506 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
| 3507 - ctx->connection->send_window) | |
| 3508 { | |
| 3509 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3510 "upstream sent too large window update"); | |
| 3511 return NGX_ERROR; | |
| 3512 } | |
| 3513 | |
| 3514 ctx->connection->send_window += ctx->window_update; | |
| 3515 } | |
| 3516 | |
| 3517 return NGX_OK; | |
| 3518 } | |
| 3519 | |
| 3520 | |
| 3521 static ngx_int_t | |
| 3522 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
| 3523 ngx_buf_t *b) | |
| 3524 { | |
| 3525 u_char ch, *p, *last; | |
| 3526 ssize_t window_update; | |
| 3527 enum { | |
| 3528 sw_start = 0, | |
| 3529 sw_id, | |
| 3530 sw_id_2, | |
| 3531 sw_value, | |
| 3532 sw_value_2, | |
| 3533 sw_value_3, | |
| 3534 sw_value_4 | |
| 3535 } state; | |
| 3536 | |
| 3537 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3538 last = b->last; | |
| 3539 | |
| 3540 } else { | |
| 3541 last = b->pos + ctx->rest; | |
| 3542 } | |
| 3543 | |
| 3544 state = ctx->frame_state; | |
| 3545 | |
| 3546 if (state == sw_start) { | |
| 3547 | |
| 3548 if (ctx->stream_id) { | |
| 3549 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3550 "upstream sent settings frame " | |
| 3551 "with non-zero stream id: %ui", | |
| 3552 ctx->stream_id); | |
| 3553 return NGX_ERROR; | |
| 3554 } | |
| 3555 | |
| 3556 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3557 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3558 "grpc settings ack"); | |
| 3559 | |
| 3560 if (ctx->rest != 0) { | |
| 3561 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3562 "upstream sent settings frame " | |
| 3563 "with ack flag and non-zero length: %uz", | |
| 3564 ctx->rest); | |
| 3565 return NGX_ERROR; | |
| 3566 } | |
| 3567 | |
| 3568 ctx->state = ngx_http_grpc_st_start; | |
| 3569 | |
| 3570 return NGX_OK; | |
| 3571 } | |
| 3572 | |
| 3573 if (ctx->rest % 6 != 0) { | |
| 3574 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3575 "upstream sent settings frame " | |
| 3576 "with invalid length: %uz", | |
| 3577 ctx->rest); | |
| 3578 return NGX_ERROR; | |
| 3579 } | |
| 3580 } | |
| 3581 | |
| 3582 for (p = b->pos; p < last; p++) { | |
| 3583 ch = *p; | |
| 3584 | |
| 3585 #if 0 | |
| 3586 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3587 "grpc settings byte: %02Xd s:%d", ch, state); | |
| 3588 #endif | |
| 3589 | |
| 3590 switch (state) { | |
| 3591 | |
| 3592 case sw_start: | |
| 3593 case sw_id: | |
| 3594 ctx->setting_id = ch << 8; | |
| 3595 state = sw_id_2; | |
| 3596 break; | |
| 3597 | |
| 3598 case sw_id_2: | |
| 3599 ctx->setting_id |= ch; | |
| 3600 state = sw_value; | |
| 3601 break; | |
| 3602 | |
| 3603 case sw_value: | |
|
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3604 ctx->setting_value = (ngx_uint_t) ch << 24; |
| 7233 | 3605 state = sw_value_2; |
| 3606 break; | |
| 3607 | |
| 3608 case sw_value_2: | |
| 3609 ctx->setting_value |= ch << 16; | |
| 3610 state = sw_value_3; | |
| 3611 break; | |
| 3612 | |
| 3613 case sw_value_3: | |
| 3614 ctx->setting_value |= ch << 8; | |
| 3615 state = sw_value_4; | |
| 3616 break; | |
| 3617 | |
| 3618 case sw_value_4: | |
| 3619 ctx->setting_value |= ch; | |
| 3620 state = sw_id; | |
| 3621 | |
| 3622 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3623 "grpc setting: %ui %ui", | |
| 3624 ctx->setting_id, ctx->setting_value); | |
| 3625 | |
| 3626 /* | |
| 3627 * The following settings are defined by the protocol: | |
| 3628 * | |
| 3629 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
| 3630 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
| 3631 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
| 3632 * | |
| 3633 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
| 3634 * a simple client. | |
| 3635 */ | |
| 3636 | |
| 3637 if (ctx->setting_id == 0x04) { | |
| 3638 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
| 3639 | |
| 3640 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
| 3641 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3642 "upstream sent settings frame " | |
| 3643 "with too large initial window size: %ui", | |
| 3644 ctx->setting_value); | |
| 3645 return NGX_ERROR; | |
| 3646 } | |
| 3647 | |
| 3648 window_update = ctx->setting_value | |
| 3649 - ctx->connection->init_window; | |
| 3650 ctx->connection->init_window = ctx->setting_value; | |
| 3651 | |
| 3652 if (ctx->send_window > 0 | |
| 3653 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
| 3654 - ctx->send_window) | |
| 3655 { | |
| 3656 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3657 "upstream sent settings frame " | |
| 3658 "with too large initial window size: %ui", | |
| 3659 ctx->setting_value); | |
| 3660 return NGX_ERROR; | |
| 3661 } | |
| 3662 | |
| 3663 ctx->send_window += window_update; | |
| 3664 } | |
| 3665 | |
| 3666 break; | |
| 3667 } | |
| 3668 } | |
| 3669 | |
| 3670 ctx->rest -= p - b->pos; | |
| 3671 ctx->frame_state = state; | |
| 3672 b->pos = p; | |
| 3673 | |
| 3674 if (ctx->rest > 0) { | |
| 3675 return NGX_AGAIN; | |
| 3676 } | |
| 3677 | |
| 3678 ctx->state = ngx_http_grpc_st_start; | |
| 3679 | |
| 3680 return ngx_http_grpc_send_settings_ack(r, ctx); | |
| 3681 } | |
| 3682 | |
| 3683 | |
| 3684 static ngx_int_t | |
| 3685 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
| 3686 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
| 3687 { | |
| 3688 u_char ch, *p, *last; | |
| 3689 enum { | |
| 3690 sw_start = 0, | |
| 3691 sw_data_2, | |
| 3692 sw_data_3, | |
| 3693 sw_data_4, | |
| 3694 sw_data_5, | |
| 3695 sw_data_6, | |
| 3696 sw_data_7, | |
| 3697 sw_data_8 | |
| 3698 } state; | |
| 3699 | |
| 3700 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
| 3701 last = b->last; | |
| 3702 | |
| 3703 } else { | |
| 3704 last = b->pos + ctx->rest; | |
| 3705 } | |
| 3706 | |
| 3707 state = ctx->frame_state; | |
| 3708 | |
| 3709 if (state == sw_start) { | |
| 3710 | |
| 3711 if (ctx->stream_id) { | |
| 3712 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3713 "upstream sent ping frame " | |
| 3714 "with non-zero stream id: %ui", | |
| 3715 ctx->stream_id); | |
| 3716 return NGX_ERROR; | |
| 3717 } | |
| 3718 | |
| 3719 if (ctx->rest != 8) { | |
| 3720 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3721 "upstream sent ping frame " | |
| 3722 "with invalid length: %uz", | |
| 3723 ctx->rest); | |
| 3724 return NGX_ERROR; | |
| 3725 } | |
| 3726 | |
| 3727 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
| 3728 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
| 3729 "upstream sent ping frame with ack flag"); | |
| 3730 return NGX_ERROR; | |
| 3731 } | |
| 3732 } | |
| 3733 | |
| 3734 for (p = b->pos; p < last; p++) { | |
| 3735 ch = *p; | |
| 3736 | |
| 3737 #if 0 | |
| 3738 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3739 "grpc ping byte: %02Xd s:%d", ch, state); | |
| 3740 #endif | |
| 3741 | |
| 3742 if (state < sw_data_8) { | |
| 3743 ctx->ping_data[state] = ch; | |
| 3744 state++; | |
| 3745 | |
| 3746 } else { | |
| 3747 ctx->ping_data[7] = ch; | |
| 3748 state = sw_start; | |
| 3749 | |
| 3750 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3751 "grpc ping"); | |
| 3752 } | |
| 3753 } | |
| 3754 | |
| 3755 ctx->rest -= p - b->pos; | |
| 3756 ctx->frame_state = state; | |
| 3757 b->pos = p; | |
| 3758 | |
| 3759 if (ctx->rest > 0) { | |
| 3760 return NGX_AGAIN; | |
| 3761 } | |
| 3762 | |
| 3763 ctx->state = ngx_http_grpc_st_start; | |
| 3764 | |
| 3765 return ngx_http_grpc_send_ping_ack(r, ctx); | |
| 3766 } | |
| 3767 | |
| 3768 | |
| 3769 static ngx_int_t | |
| 3770 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3771 { | |
| 3772 ngx_chain_t *cl, **ll; | |
| 3773 ngx_http_grpc_frame_t *f; | |
| 3774 | |
| 3775 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3776 "grpc send settings ack"); | |
| 3777 | |
| 3778 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3779 ll = &cl->next; | |
| 3780 } | |
| 3781 | |
| 3782 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3783 if (cl == NULL) { | |
| 3784 return NGX_ERROR; | |
| 3785 } | |
| 3786 | |
| 3787 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3788 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3789 | |
| 3790 f->length_0 = 0; | |
| 3791 f->length_1 = 0; | |
| 3792 f->length_2 = 0; | |
| 3793 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
| 3794 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3795 f->stream_id_0 = 0; | |
| 3796 f->stream_id_1 = 0; | |
| 3797 f->stream_id_2 = 0; | |
| 3798 f->stream_id_3 = 0; | |
| 3799 | |
| 3800 *ll = cl; | |
| 3801 | |
| 3802 return NGX_OK; | |
| 3803 } | |
| 3804 | |
| 3805 | |
| 3806 static ngx_int_t | |
| 3807 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3808 { | |
| 3809 ngx_chain_t *cl, **ll; | |
| 3810 ngx_http_grpc_frame_t *f; | |
| 3811 | |
| 3812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3813 "grpc send ping ack"); | |
| 3814 | |
| 3815 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3816 ll = &cl->next; | |
| 3817 } | |
| 3818 | |
| 3819 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3820 if (cl == NULL) { | |
| 3821 return NGX_ERROR; | |
| 3822 } | |
| 3823 | |
| 3824 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3825 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3826 | |
| 3827 f->length_0 = 0; | |
| 3828 f->length_1 = 0; | |
| 3829 f->length_2 = 8; | |
| 3830 f->type = NGX_HTTP_V2_PING_FRAME; | |
| 3831 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
| 3832 f->stream_id_0 = 0; | |
| 3833 f->stream_id_1 = 0; | |
| 3834 f->stream_id_2 = 0; | |
| 3835 f->stream_id_3 = 0; | |
| 3836 | |
| 3837 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
| 3838 | |
| 3839 *ll = cl; | |
| 3840 | |
| 3841 return NGX_OK; | |
| 3842 } | |
| 3843 | |
| 3844 | |
| 3845 static ngx_int_t | |
| 3846 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
| 3847 ngx_http_grpc_ctx_t *ctx) | |
| 3848 { | |
| 3849 size_t n; | |
| 3850 ngx_chain_t *cl, **ll; | |
| 3851 ngx_http_grpc_frame_t *f; | |
| 3852 | |
| 3853 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 3854 "grpc send window update: %uz %uz", | |
| 3855 ctx->connection->recv_window, ctx->recv_window); | |
| 3856 | |
| 3857 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
| 3858 ll = &cl->next; | |
| 3859 } | |
| 3860 | |
| 3861 cl = ngx_http_grpc_get_buf(r, ctx); | |
| 3862 if (cl == NULL) { | |
| 3863 return NGX_ERROR; | |
| 3864 } | |
| 3865 | |
| 3866 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3867 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3868 | |
| 3869 f->length_0 = 0; | |
| 3870 f->length_1 = 0; | |
| 3871 f->length_2 = 4; | |
| 3872 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3873 f->flags = 0; | |
| 3874 f->stream_id_0 = 0; | |
| 3875 f->stream_id_1 = 0; | |
| 3876 f->stream_id_2 = 0; | |
| 3877 f->stream_id_3 = 0; | |
| 3878 | |
| 3879 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
| 3880 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3881 | |
| 3882 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3883 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3884 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3885 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3886 | |
| 3887 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
| 3888 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
| 3889 | |
| 3890 f->length_0 = 0; | |
| 3891 f->length_1 = 0; | |
| 3892 f->length_2 = 4; | |
| 3893 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
| 3894 f->flags = 0; | |
| 3895 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
| 3896 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
| 3897 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
| 3898 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
| 3899 | |
| 3900 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
| 3901 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 3902 | |
| 3903 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
| 3904 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
| 3905 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
| 3906 *cl->buf->last++ = (u_char) (n & 0xff); | |
| 3907 | |
| 3908 *ll = cl; | |
| 3909 | |
| 3910 return NGX_OK; | |
| 3911 } | |
| 3912 | |
| 3913 | |
| 3914 static ngx_chain_t * | |
| 3915 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
| 3916 { | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3917 u_char *start; |
| 7233 | 3918 ngx_buf_t *b; |
| 3919 ngx_chain_t *cl; | |
| 3920 | |
| 3921 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
| 3922 if (cl == NULL) { | |
| 3923 return NULL; | |
| 3924 } | |
| 3925 | |
| 3926 b = cl->buf; | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3927 start = b->start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3928 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3929 if (start == NULL) { |
| 7233 | 3930 |
| 3931 /* | |
| 3932 * each buffer is large enough to hold two window update | |
| 3933 * frames in a row | |
| 3934 */ | |
| 3935 | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3936 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3937 if (start == NULL) { |
| 7233 | 3938 return NULL; |
| 3939 } | |
| 3940 | |
| 3941 } | |
| 3942 | |
|
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3943 ngx_memzero(b, sizeof(ngx_buf_t)); |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3944 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3945 b->start = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3946 b->pos = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3947 b->last = start; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3948 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3949 |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3950 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3951 b->temporary = 1; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3952 b->flush = 1; |
|
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
Maxim Dounin <mdounin@mdounin.ru>
parents:
7271
diff
changeset
|
3953 |
| 7233 | 3954 return cl; |
| 3955 } | |
| 3956 | |
| 3957 | |
| 3958 static ngx_http_grpc_ctx_t * | |
| 3959 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
| 3960 { | |
| 3961 ngx_http_grpc_ctx_t *ctx; | |
| 3962 ngx_http_upstream_t *u; | |
| 3963 | |
| 3964 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
| 3965 | |
| 3966 if (ctx->connection == NULL) { | |
| 3967 u = r->upstream; | |
| 3968 | |
| 3969 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
| 3970 return NULL; | |
| 3971 } | |
| 3972 } | |
| 3973 | |
| 3974 return ctx; | |
| 3975 } | |
| 3976 | |
| 3977 | |
| 3978 static ngx_int_t | |
| 3979 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
| 3980 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
| 3981 { | |
| 3982 ngx_connection_t *c; | |
| 3983 ngx_pool_cleanup_t *cln; | |
| 3984 | |
| 3985 c = pc->connection; | |
| 3986 | |
| 3987 if (pc->cached) { | |
| 3988 | |
| 3989 /* | |
| 3990 * for cached connections, connection data can be found | |
| 3991 * in the cleanup handler | |
| 3992 */ | |
| 3993 | |
| 3994 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
| 3995 if (cln->handler == ngx_http_grpc_cleanup) { | |
| 3996 ctx->connection = cln->data; | |
| 3997 break; | |
| 3998 } | |
| 3999 } | |
| 4000 | |
| 4001 if (ctx->connection == NULL) { | |
| 4002 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
| 4003 "no connection data found for " | |
| 4004 "keepalive http2 connection"); | |
| 4005 return NGX_ERROR; | |
| 4006 } | |
| 4007 | |
| 4008 ctx->send_window = ctx->connection->init_window; | |
| 4009 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4010 | |
| 4011 ctx->connection->last_stream_id += 2; | |
| 4012 ctx->id = ctx->connection->last_stream_id; | |
| 4013 | |
| 4014 return NGX_OK; | |
| 4015 } | |
| 4016 | |
| 4017 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
| 4018 if (cln == NULL) { | |
| 4019 return NGX_ERROR; | |
| 4020 } | |
| 4021 | |
| 4022 cln->handler = ngx_http_grpc_cleanup; | |
| 4023 ctx->connection = cln->data; | |
| 4024 | |
| 4025 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4026 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4027 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4028 | |
| 4029 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
| 4030 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
| 4031 | |
| 4032 ctx->id = 1; | |
| 4033 ctx->connection->last_stream_id = 1; | |
| 4034 | |
| 4035 return NGX_OK; | |
| 4036 } | |
| 4037 | |
| 4038 | |
| 4039 static void | |
| 4040 ngx_http_grpc_cleanup(void *data) | |
| 4041 { | |
| 4042 #if 0 | |
| 4043 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
| 4044 "grpc cleanup"); | |
| 4045 #endif | |
| 4046 return; | |
| 4047 } | |
| 4048 | |
| 4049 | |
| 4050 static void | |
| 4051 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
| 4052 { | |
| 4053 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4054 "abort grpc request"); | |
| 4055 return; | |
| 4056 } | |
| 4057 | |
| 4058 | |
| 4059 static void | |
| 4060 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
| 4061 { | |
| 4062 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
| 4063 "finalize grpc request"); | |
| 4064 return; | |
| 4065 } | |
| 4066 | |
| 4067 | |
|
7234
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4068 static ngx_int_t |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4069 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4070 ngx_http_variable_value_t *v, uintptr_t data) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4071 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4072 ngx_table_elt_t *te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4073 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4074 te = r->headers_in.te; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4075 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4076 if (te == NULL) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4077 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4078 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4079 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4080 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4081 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4082 (u_char *) "trailers", 8 - 1) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4083 == NULL) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4084 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4085 v->not_found = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4086 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4087 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4088 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4089 v->valid = 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4090 v->no_cacheable = 0; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4091 v->not_found = 0; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4092 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4093 v->data = (u_char *) "trailers"; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4094 v->len = sizeof("trailers") - 1; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4095 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4096 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4097 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4098 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4099 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4100 static ngx_int_t |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4101 ngx_http_grpc_add_variables(ngx_conf_t *cf) |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4102 { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4103 ngx_http_variable_t *var, *v; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4104 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4105 for (v = ngx_http_grpc_vars; v->name.len; v++) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4106 var = ngx_http_add_variable(cf, &v->name, v->flags); |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4107 if (var == NULL) { |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4108 return NGX_ERROR; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4109 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4110 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4111 var->get_handler = v->get_handler; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4112 var->data = v->data; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4113 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4114 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4115 return NGX_OK; |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4116 } |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4117 |
|
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4118 |
| 7233 | 4119 static void * |
| 4120 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
| 4121 { | |
| 4122 ngx_http_grpc_loc_conf_t *conf; | |
| 4123 | |
| 4124 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
| 4125 if (conf == NULL) { | |
| 4126 return NULL; | |
| 4127 } | |
| 4128 | |
| 4129 /* | |
| 4130 * set by ngx_pcalloc(): | |
| 4131 * | |
| 4132 * conf->upstream.ignore_headers = 0; | |
| 4133 * conf->upstream.next_upstream = 0; | |
| 4134 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
| 4135 * conf->upstream.ssl_name = NULL; | |
| 4136 * | |
| 4137 * conf->headers_source = NULL; | |
| 4138 * conf->headers.lengths = NULL; | |
| 4139 * conf->headers.values = NULL; | |
| 4140 * conf->headers.hash = { NULL, 0 }; | |
| 4141 * conf->host = { 0, NULL }; | |
| 4142 * conf->host_set = 0; | |
| 4143 * conf->ssl = 0; | |
| 4144 * conf->ssl_protocols = 0; | |
| 4145 * conf->ssl_ciphers = { 0, NULL }; | |
| 4146 * conf->ssl_trusted_certificate = { 0, NULL }; | |
| 4147 * conf->ssl_crl = { 0, NULL }; | |
| 4148 * conf->ssl_certificate = { 0, NULL }; | |
| 4149 * conf->ssl_certificate_key = { 0, NULL }; | |
| 4150 */ | |
| 4151 | |
| 4152 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
| 4153 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; | |
| 4154 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
| 4155 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
| 4156 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
| 4157 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
| 4158 | |
| 4159 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
| 4160 | |
| 4161 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
| 4162 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
| 4163 | |
| 4164 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
| 4165 | |
| 4166 #if (NGX_HTTP_SSL) | |
| 4167 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
| 4168 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
| 4169 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
| 4170 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
| 4171 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
| 4172 #endif | |
| 4173 | |
| 4174 /* the hardcoded values */ | |
| 4175 conf->upstream.cyclic_temp_file = 0; | |
| 4176 conf->upstream.buffering = 0; | |
| 4177 conf->upstream.ignore_client_abort = 0; | |
| 4178 conf->upstream.send_lowat = 0; | |
| 4179 conf->upstream.bufs.num = 0; | |
| 4180 conf->upstream.busy_buffers_size = 0; | |
| 4181 conf->upstream.max_temp_file_size = 0; | |
| 4182 conf->upstream.temp_file_write_size = 0; | |
| 4183 conf->upstream.pass_request_headers = 1; | |
| 4184 conf->upstream.pass_request_body = 1; | |
| 4185 conf->upstream.force_ranges = 0; | |
| 4186 conf->upstream.pass_trailers = 1; | |
| 4187 conf->upstream.preserve_output = 1; | |
| 4188 | |
| 4189 ngx_str_set(&conf->upstream.module, "grpc"); | |
| 4190 | |
| 4191 return conf; | |
| 4192 } | |
| 4193 | |
| 4194 | |
| 4195 static char * | |
| 4196 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
| 4197 { | |
| 4198 ngx_http_grpc_loc_conf_t *prev = parent; | |
| 4199 ngx_http_grpc_loc_conf_t *conf = child; | |
| 4200 | |
| 4201 ngx_int_t rc; | |
| 4202 ngx_hash_init_t hash; | |
| 4203 ngx_http_core_loc_conf_t *clcf; | |
| 4204 | |
| 4205 ngx_conf_merge_ptr_value(conf->upstream.local, | |
| 4206 prev->upstream.local, NULL); | |
| 4207 | |
| 4208 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, | |
| 4209 prev->upstream.next_upstream_tries, 0); | |
| 4210 | |
| 4211 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
| 4212 prev->upstream.connect_timeout, 60000); | |
| 4213 | |
| 4214 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
| 4215 prev->upstream.send_timeout, 60000); | |
| 4216 | |
| 4217 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
| 4218 prev->upstream.read_timeout, 60000); | |
| 4219 | |
| 4220 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
| 4221 prev->upstream.next_upstream_timeout, 0); | |
| 4222 | |
| 4223 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
| 4224 prev->upstream.buffer_size, | |
| 4225 (size_t) ngx_pagesize); | |
| 4226 | |
| 4227 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
| 4228 prev->upstream.ignore_headers, | |
| 4229 NGX_CONF_BITMASK_SET); | |
| 4230 | |
| 4231 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
| 4232 prev->upstream.next_upstream, | |
| 4233 (NGX_CONF_BITMASK_SET | |
| 4234 |NGX_HTTP_UPSTREAM_FT_ERROR | |
| 4235 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
| 4236 | |
| 4237 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
| 4238 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
| 4239 |NGX_HTTP_UPSTREAM_FT_OFF; | |
| 4240 } | |
| 4241 | |
| 4242 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
| 4243 prev->upstream.intercept_errors, 0); | |
| 4244 | |
| 4245 #if (NGX_HTTP_SSL) | |
| 4246 | |
| 4247 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
| 4248 prev->upstream.ssl_session_reuse, 1); | |
| 4249 | |
| 4250 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
| 4251 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
| 4252 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
| 4253 | |
| 4254 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
| 4255 "DEFAULT"); | |
| 4256 | |
| 4257 if (conf->upstream.ssl_name == NULL) { | |
| 4258 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
| 4259 } | |
| 4260 | |
| 4261 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
| 4262 prev->upstream.ssl_server_name, 0); | |
| 4263 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
| 4264 prev->upstream.ssl_verify, 0); | |
| 4265 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
| 4266 prev->ssl_verify_depth, 1); | |
| 4267 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
| 4268 prev->ssl_trusted_certificate, ""); | |
| 4269 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
| 4270 | |
| 4271 ngx_conf_merge_str_value(conf->ssl_certificate, | |
| 4272 prev->ssl_certificate, ""); | |
| 4273 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
| 4274 prev->ssl_certificate_key, ""); | |
| 4275 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
| 4276 | |
| 4277 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
| 4278 return NGX_CONF_ERROR; | |
| 4279 } | |
| 4280 | |
| 4281 #endif | |
| 4282 | |
| 4283 hash.max_size = 512; | |
| 4284 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
| 4285 hash.name = "grpc_headers_hash"; | |
| 4286 | |
| 4287 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
| 4288 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
| 4289 != NGX_OK) | |
| 4290 { | |
| 4291 return NGX_CONF_ERROR; | |
| 4292 } | |
| 4293 | |
| 4294 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4295 | |
| 4296 if (clcf->noname && conf->upstream.upstream == NULL) { | |
| 4297 conf->upstream.upstream = prev->upstream.upstream; | |
| 4298 conf->host = prev->host; | |
| 4299 #if (NGX_HTTP_SSL) | |
| 4300 conf->upstream.ssl = prev->upstream.ssl; | |
| 4301 #endif | |
| 4302 } | |
| 4303 | |
| 4304 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
| 4305 clcf->handler = ngx_http_grpc_handler; | |
| 4306 } | |
| 4307 | |
| 4308 if (conf->headers_source == NULL) { | |
| 4309 conf->headers = prev->headers; | |
| 4310 conf->headers_source = prev->headers_source; | |
| 4311 conf->host_set = prev->host_set; | |
| 4312 } | |
| 4313 | |
| 4314 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
| 4315 ngx_http_grpc_headers); | |
| 4316 if (rc != NGX_OK) { | |
| 4317 return NGX_CONF_ERROR; | |
| 4318 } | |
| 4319 | |
| 4320 /* | |
| 4321 * special handling to preserve conf->headers in the "http" section | |
| 4322 * to inherit it to all servers | |
| 4323 */ | |
| 4324 | |
| 4325 if (prev->headers.hash.buckets == NULL | |
| 4326 && conf->headers_source == prev->headers_source) | |
| 4327 { | |
| 4328 prev->headers = conf->headers; | |
| 4329 prev->host_set = conf->host_set; | |
| 4330 } | |
| 4331 | |
| 4332 return NGX_CONF_OK; | |
| 4333 } | |
| 4334 | |
| 4335 | |
| 4336 static ngx_int_t | |
| 4337 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
| 4338 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
| 4339 { | |
| 4340 u_char *p; | |
| 4341 size_t size; | |
| 4342 uintptr_t *code; | |
| 4343 ngx_uint_t i; | |
| 4344 ngx_array_t headers_names, headers_merged; | |
| 4345 ngx_keyval_t *src, *s, *h; | |
| 4346 ngx_hash_key_t *hk; | |
| 4347 ngx_hash_init_t hash; | |
| 4348 ngx_http_script_compile_t sc; | |
| 4349 ngx_http_script_copy_code_t *copy; | |
| 4350 | |
| 4351 if (headers->hash.buckets) { | |
| 4352 return NGX_OK; | |
| 4353 } | |
| 4354 | |
| 4355 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
| 4356 != NGX_OK) | |
| 4357 { | |
| 4358 return NGX_ERROR; | |
| 4359 } | |
| 4360 | |
| 4361 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
| 4362 != NGX_OK) | |
| 4363 { | |
| 4364 return NGX_ERROR; | |
| 4365 } | |
| 4366 | |
| 4367 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
| 4368 if (headers->lengths == NULL) { | |
| 4369 return NGX_ERROR; | |
| 4370 } | |
| 4371 | |
| 4372 headers->values = ngx_array_create(cf->pool, 512, 1); | |
| 4373 if (headers->values == NULL) { | |
| 4374 return NGX_ERROR; | |
| 4375 } | |
| 4376 | |
| 4377 if (conf->headers_source) { | |
| 4378 | |
| 4379 src = conf->headers_source->elts; | |
| 4380 for (i = 0; i < conf->headers_source->nelts; i++) { | |
| 4381 | |
| 4382 if (src[i].key.len == 4 | |
| 4383 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
| 4384 { | |
| 4385 conf->host_set = 1; | |
| 4386 } | |
| 4387 | |
| 4388 s = ngx_array_push(&headers_merged); | |
| 4389 if (s == NULL) { | |
| 4390 return NGX_ERROR; | |
| 4391 } | |
| 4392 | |
| 4393 *s = src[i]; | |
| 4394 } | |
| 4395 } | |
| 4396 | |
| 4397 h = default_headers; | |
| 4398 | |
| 4399 while (h->key.len) { | |
| 4400 | |
| 4401 src = headers_merged.elts; | |
| 4402 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4403 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
| 4404 goto next; | |
| 4405 } | |
| 4406 } | |
| 4407 | |
| 4408 s = ngx_array_push(&headers_merged); | |
| 4409 if (s == NULL) { | |
| 4410 return NGX_ERROR; | |
| 4411 } | |
| 4412 | |
| 4413 *s = *h; | |
| 4414 | |
| 4415 next: | |
| 4416 | |
| 4417 h++; | |
| 4418 } | |
| 4419 | |
| 4420 | |
| 4421 src = headers_merged.elts; | |
| 4422 for (i = 0; i < headers_merged.nelts; i++) { | |
| 4423 | |
| 4424 hk = ngx_array_push(&headers_names); | |
| 4425 if (hk == NULL) { | |
| 4426 return NGX_ERROR; | |
| 4427 } | |
| 4428 | |
| 4429 hk->key = src[i].key; | |
| 4430 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
| 4431 hk->value = (void *) 1; | |
| 4432 | |
| 4433 if (src[i].value.len == 0) { | |
| 4434 continue; | |
| 4435 } | |
| 4436 | |
| 4437 copy = ngx_array_push_n(headers->lengths, | |
| 4438 sizeof(ngx_http_script_copy_code_t)); | |
| 4439 if (copy == NULL) { | |
| 4440 return NGX_ERROR; | |
| 4441 } | |
| 4442 | |
|
7271
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4443 copy->code = (ngx_http_script_code_pt) (void *) |
|
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4444 ngx_http_script_copy_len_code; |
| 7233 | 4445 copy->len = src[i].key.len; |
| 4446 | |
| 4447 size = (sizeof(ngx_http_script_copy_code_t) | |
| 4448 + src[i].key.len + sizeof(uintptr_t) - 1) | |
| 4449 & ~(sizeof(uintptr_t) - 1); | |
| 4450 | |
| 4451 copy = ngx_array_push_n(headers->values, size); | |
| 4452 if (copy == NULL) { | |
| 4453 return NGX_ERROR; | |
| 4454 } | |
| 4455 | |
| 4456 copy->code = ngx_http_script_copy_code; | |
| 4457 copy->len = src[i].key.len; | |
| 4458 | |
| 4459 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
| 4460 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
| 4461 | |
| 4462 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
| 4463 | |
| 4464 sc.cf = cf; | |
| 4465 sc.source = &src[i].value; | |
| 4466 sc.flushes = &headers->flushes; | |
| 4467 sc.lengths = &headers->lengths; | |
| 4468 sc.values = &headers->values; | |
| 4469 | |
| 4470 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
| 4471 return NGX_ERROR; | |
| 4472 } | |
| 4473 | |
| 4474 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4475 if (code == NULL) { | |
| 4476 return NGX_ERROR; | |
| 4477 } | |
| 4478 | |
| 4479 *code = (uintptr_t) NULL; | |
| 4480 | |
| 4481 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
| 4482 if (code == NULL) { | |
| 4483 return NGX_ERROR; | |
| 4484 } | |
| 4485 | |
| 4486 *code = (uintptr_t) NULL; | |
| 4487 } | |
| 4488 | |
| 4489 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
| 4490 if (code == NULL) { | |
| 4491 return NGX_ERROR; | |
| 4492 } | |
| 4493 | |
| 4494 *code = (uintptr_t) NULL; | |
| 4495 | |
| 4496 | |
| 4497 hash.hash = &headers->hash; | |
| 4498 hash.key = ngx_hash_key_lc; | |
| 4499 hash.max_size = 512; | |
| 4500 hash.bucket_size = 64; | |
| 4501 hash.name = "grpc_headers_hash"; | |
| 4502 hash.pool = cf->pool; | |
| 4503 hash.temp_pool = NULL; | |
| 4504 | |
| 4505 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
| 4506 } | |
| 4507 | |
| 4508 | |
| 4509 static char * | |
| 4510 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4511 { | |
| 4512 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4513 | |
| 4514 size_t add; | |
| 4515 ngx_str_t *value, *url; | |
| 4516 ngx_url_t u; | |
| 4517 ngx_http_core_loc_conf_t *clcf; | |
| 4518 | |
| 4519 if (glcf->upstream.upstream) { | |
| 4520 return "is duplicate"; | |
| 4521 } | |
| 4522 | |
| 4523 value = cf->args->elts; | |
| 4524 url = &value[1]; | |
| 4525 | |
| 4526 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
| 4527 add = 7; | |
| 4528 | |
| 4529 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
| 4530 | |
| 4531 #if (NGX_HTTP_SSL) | |
| 4532 glcf->ssl = 1; | |
| 4533 | |
| 4534 add = 8; | |
| 4535 #else | |
| 4536 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
| 4537 "grpcs protocol requires SSL support"); | |
| 4538 return NGX_CONF_ERROR; | |
| 4539 #endif | |
| 4540 | |
| 4541 } else { | |
| 4542 add = 0; | |
| 4543 } | |
| 4544 | |
| 4545 ngx_memzero(&u, sizeof(ngx_url_t)); | |
| 4546 | |
| 4547 u.url.len = url->len - add; | |
| 4548 u.url.data = url->data + add; | |
| 4549 u.no_resolve = 1; | |
| 4550 | |
| 4551 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
| 4552 if (glcf->upstream.upstream == NULL) { | |
| 4553 return NGX_CONF_ERROR; | |
| 4554 } | |
| 4555 | |
| 4556 if (u.family != AF_UNIX) { | |
| 4557 | |
| 4558 if (u.no_port) { | |
| 4559 glcf->host = u.host; | |
| 4560 | |
| 4561 } else { | |
| 4562 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
| 4563 glcf->host.data = u.host.data; | |
| 4564 } | |
| 4565 | |
| 4566 } else { | |
| 4567 ngx_str_set(&glcf->host, "localhost"); | |
| 4568 } | |
| 4569 | |
| 4570 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
| 4571 | |
| 4572 clcf->handler = ngx_http_grpc_handler; | |
| 4573 | |
|
7321
45e513c3540d
Fixed invalid access to location defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
7320
diff
changeset
|
4574 if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') { |
| 7233 | 4575 clcf->auto_redirect = 1; |
| 4576 } | |
| 4577 | |
| 4578 return NGX_CONF_OK; | |
| 4579 } | |
| 4580 | |
| 4581 | |
| 4582 #if (NGX_HTTP_SSL) | |
| 4583 | |
| 4584 static char * | |
| 4585 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
| 4586 { | |
| 4587 ngx_http_grpc_loc_conf_t *glcf = conf; | |
| 4588 | |
| 4589 ngx_str_t *value; | |
| 4590 | |
| 4591 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
| 4592 return "is duplicate"; | |
| 4593 } | |
| 4594 | |
| 4595 value = cf->args->elts; | |
| 4596 | |
| 4597 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
| 4598 | |
| 4599 if (glcf->ssl_passwords == NULL) { | |
| 4600 return NGX_CONF_ERROR; | |
| 4601 } | |
| 4602 | |
| 4603 return NGX_CONF_OK; | |
| 4604 } | |
| 4605 | |
| 4606 | |
| 4607 static ngx_int_t | |
| 4608 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
| 4609 { | |
| 4610 ngx_pool_cleanup_t *cln; | |
| 4611 | |
| 4612 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
| 4613 if (glcf->upstream.ssl == NULL) { | |
| 4614 return NGX_ERROR; | |
| 4615 } | |
| 4616 | |
| 4617 glcf->upstream.ssl->log = cf->log; | |
| 4618 | |
| 4619 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
| 4620 != NGX_OK) | |
| 4621 { | |
| 4622 return NGX_ERROR; | |
| 4623 } | |
| 4624 | |
| 4625 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
| 4626 if (cln == NULL) { | |
| 4627 return NGX_ERROR; | |
| 4628 } | |
| 4629 | |
| 4630 cln->handler = ngx_ssl_cleanup_ctx; | |
| 4631 cln->data = glcf->upstream.ssl; | |
| 4632 | |
| 4633 if (glcf->ssl_certificate.len) { | |
| 4634 | |
| 4635 if (glcf->ssl_certificate_key.len == 0) { | |
| 4636 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4637 "no \"grpc_ssl_certificate_key\" is defined " | |
| 4638 "for certificate \"%V\"", &glcf->ssl_certificate); | |
| 4639 return NGX_ERROR; | |
| 4640 } | |
| 4641 | |
| 4642 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
| 4643 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
| 4644 != NGX_OK) | |
| 4645 { | |
| 4646 return NGX_ERROR; | |
| 4647 } | |
| 4648 } | |
| 4649 | |
| 4650 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
| 4651 != NGX_OK) | |
| 4652 { | |
| 4653 return NGX_ERROR; | |
| 4654 } | |
| 4655 | |
| 4656 if (glcf->upstream.ssl_verify) { | |
| 4657 if (glcf->ssl_trusted_certificate.len == 0) { | |
| 4658 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4659 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
| 4660 return NGX_ERROR; | |
| 4661 } | |
| 4662 | |
| 4663 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
| 4664 &glcf->ssl_trusted_certificate, | |
| 4665 glcf->ssl_verify_depth) | |
| 4666 != NGX_OK) | |
| 4667 { | |
| 4668 return NGX_ERROR; | |
| 4669 } | |
| 4670 | |
| 4671 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
| 4672 return NGX_ERROR; | |
| 4673 } | |
| 4674 } | |
| 4675 | |
|
7320
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4676 if (ngx_ssl_client_session_cache(cf, glcf->upstream.ssl, |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4677 glcf->upstream.ssl_session_reuse) |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4678 != NGX_OK) |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4679 { |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4680 return NGX_ERROR; |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4681 } |
|
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4682 |
| 7233 | 4683 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
| 4684 | |
| 4685 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
| 4686 (u_char *) "\x02h2", 3) | |
| 4687 != 0) | |
| 4688 { | |
| 4689 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
| 4690 "SSL_CTX_set_alpn_protos() failed"); | |
| 4691 return NGX_ERROR; | |
| 4692 } | |
| 4693 | |
| 4694 #endif | |
| 4695 | |
| 4696 return NGX_OK; | |
| 4697 } | |
| 4698 | |
| 4699 #endif |