Mercurial > hg > nginx-quic
annotate src/http/modules/ngx_http_grpc_module.c @ 7429:e573d74299a0
Upstream: implemented $upstream_bytes_sent.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Thu, 13 Dec 2018 17:23:07 +0300 |
parents | 57463f4e2fcd |
children | 8981dbb12254 |
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 | |
7379
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gRPC: limited allocations due to ping and settings frames.
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81 ngx_uint_t pings; |
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parents:
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82 ngx_uint_t settings; |
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gRPC: limited allocations due to ping and settings frames.
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parents:
7371
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83 |
7233 | 84 ssize_t send_window; |
85 size_t recv_window; | |
86 | |
87 size_t rest; | |
88 ngx_uint_t stream_id; | |
89 u_char type; | |
90 u_char flags; | |
91 u_char padding; | |
92 | |
93 ngx_uint_t error; | |
94 ngx_uint_t window_update; | |
95 | |
96 ngx_uint_t setting_id; | |
97 ngx_uint_t setting_value; | |
98 | |
99 u_char ping_data[8]; | |
100 | |
101 ngx_uint_t index; | |
102 ngx_str_t name; | |
103 ngx_str_t value; | |
104 | |
105 u_char *field_end; | |
106 size_t field_length; | |
107 size_t field_rest; | |
108 u_char field_state; | |
109 | |
110 unsigned literal:1; | |
111 unsigned field_huffman:1; | |
112 | |
113 unsigned header_sent:1; | |
114 unsigned output_closed:1; | |
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115 unsigned output_blocked:1; |
7233 | 116 unsigned parsing_headers:1; |
117 unsigned end_stream:1; | |
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gRPC: improved keepalive handling.
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118 unsigned done:1; |
7233 | 119 unsigned status:1; |
120 | |
121 ngx_http_request_t *request; | |
122 } ngx_http_grpc_ctx_t; | |
123 | |
124 | |
125 typedef struct { | |
126 u_char length_0; | |
127 u_char length_1; | |
128 u_char length_2; | |
129 u_char type; | |
130 u_char flags; | |
131 u_char stream_id_0; | |
132 u_char stream_id_1; | |
133 u_char stream_id_2; | |
134 u_char stream_id_3; | |
135 } ngx_http_grpc_frame_t; | |
136 | |
137 | |
138 static ngx_int_t ngx_http_grpc_create_request(ngx_http_request_t *r); | |
139 static ngx_int_t ngx_http_grpc_reinit_request(ngx_http_request_t *r); | |
140 static ngx_int_t ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in); | |
141 static ngx_int_t ngx_http_grpc_process_header(ngx_http_request_t *r); | |
142 static ngx_int_t ngx_http_grpc_filter_init(void *data); | |
143 static ngx_int_t ngx_http_grpc_filter(void *data, ssize_t bytes); | |
144 | |
145 static ngx_int_t ngx_http_grpc_parse_frame(ngx_http_request_t *r, | |
146 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
147 static ngx_int_t ngx_http_grpc_parse_header(ngx_http_request_t *r, | |
148 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
149 static ngx_int_t ngx_http_grpc_parse_fragment(ngx_http_request_t *r, | |
150 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
151 static ngx_int_t ngx_http_grpc_validate_header_name(ngx_http_request_t *r, | |
152 ngx_str_t *s); | |
153 static ngx_int_t ngx_http_grpc_validate_header_value(ngx_http_request_t *r, | |
154 ngx_str_t *s); | |
155 static ngx_int_t ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, | |
156 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
157 static ngx_int_t ngx_http_grpc_parse_goaway(ngx_http_request_t *r, | |
158 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
159 static ngx_int_t ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
160 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
161 static ngx_int_t ngx_http_grpc_parse_settings(ngx_http_request_t *r, | |
162 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
163 static ngx_int_t ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
164 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b); | |
165 | |
166 static ngx_int_t ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, | |
167 ngx_http_grpc_ctx_t *ctx); | |
168 static ngx_int_t ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, | |
169 ngx_http_grpc_ctx_t *ctx); | |
170 static ngx_int_t ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
171 ngx_http_grpc_ctx_t *ctx); | |
172 | |
173 static ngx_chain_t *ngx_http_grpc_get_buf(ngx_http_request_t *r, | |
174 ngx_http_grpc_ctx_t *ctx); | |
175 static ngx_http_grpc_ctx_t *ngx_http_grpc_get_ctx(ngx_http_request_t *r); | |
176 static ngx_int_t ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
177 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc); | |
178 static void ngx_http_grpc_cleanup(void *data); | |
179 | |
180 static void ngx_http_grpc_abort_request(ngx_http_request_t *r); | |
181 static void ngx_http_grpc_finalize_request(ngx_http_request_t *r, | |
182 ngx_int_t rc); | |
183 | |
7234
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gRPC: special handling of the TE request header.
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184 static ngx_int_t ngx_http_grpc_internal_trailers_variable( |
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185 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); |
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186 |
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187 static ngx_int_t ngx_http_grpc_add_variables(ngx_conf_t *cf); |
7233 | 188 static void *ngx_http_grpc_create_loc_conf(ngx_conf_t *cf); |
189 static char *ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, | |
190 void *parent, void *child); | |
191 static ngx_int_t ngx_http_grpc_init_headers(ngx_conf_t *cf, | |
192 ngx_http_grpc_loc_conf_t *conf, ngx_http_grpc_headers_t *headers, | |
193 ngx_keyval_t *default_headers); | |
194 | |
195 static char *ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, | |
196 void *conf); | |
197 | |
198 #if (NGX_HTTP_SSL) | |
199 static char *ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, | |
200 ngx_command_t *cmd, void *conf); | |
201 static ngx_int_t ngx_http_grpc_set_ssl(ngx_conf_t *cf, | |
202 ngx_http_grpc_loc_conf_t *glcf); | |
203 #endif | |
204 | |
205 | |
206 static ngx_conf_bitmask_t ngx_http_grpc_next_upstream_masks[] = { | |
207 { ngx_string("error"), NGX_HTTP_UPSTREAM_FT_ERROR }, | |
208 { ngx_string("timeout"), NGX_HTTP_UPSTREAM_FT_TIMEOUT }, | |
209 { ngx_string("invalid_header"), NGX_HTTP_UPSTREAM_FT_INVALID_HEADER }, | |
210 { ngx_string("non_idempotent"), NGX_HTTP_UPSTREAM_FT_NON_IDEMPOTENT }, | |
211 { ngx_string("http_500"), NGX_HTTP_UPSTREAM_FT_HTTP_500 }, | |
212 { ngx_string("http_502"), NGX_HTTP_UPSTREAM_FT_HTTP_502 }, | |
213 { ngx_string("http_503"), NGX_HTTP_UPSTREAM_FT_HTTP_503 }, | |
214 { ngx_string("http_504"), NGX_HTTP_UPSTREAM_FT_HTTP_504 }, | |
215 { ngx_string("http_403"), NGX_HTTP_UPSTREAM_FT_HTTP_403 }, | |
216 { ngx_string("http_404"), NGX_HTTP_UPSTREAM_FT_HTTP_404 }, | |
217 { ngx_string("http_429"), NGX_HTTP_UPSTREAM_FT_HTTP_429 }, | |
218 { ngx_string("off"), NGX_HTTP_UPSTREAM_FT_OFF }, | |
219 { ngx_null_string, 0 } | |
220 }; | |
221 | |
222 | |
223 #if (NGX_HTTP_SSL) | |
224 | |
225 static ngx_conf_bitmask_t ngx_http_grpc_ssl_protocols[] = { | |
226 { ngx_string("SSLv2"), NGX_SSL_SSLv2 }, | |
227 { ngx_string("SSLv3"), NGX_SSL_SSLv3 }, | |
228 { ngx_string("TLSv1"), NGX_SSL_TLSv1 }, | |
229 { ngx_string("TLSv1.1"), NGX_SSL_TLSv1_1 }, | |
230 { ngx_string("TLSv1.2"), NGX_SSL_TLSv1_2 }, | |
231 { ngx_string("TLSv1.3"), NGX_SSL_TLSv1_3 }, | |
232 { ngx_null_string, 0 } | |
233 }; | |
234 | |
235 #endif | |
236 | |
237 | |
238 static ngx_command_t ngx_http_grpc_commands[] = { | |
239 | |
240 { ngx_string("grpc_pass"), | |
241 NGX_HTTP_LOC_CONF|NGX_HTTP_LIF_CONF|NGX_CONF_TAKE1, | |
242 ngx_http_grpc_pass, | |
243 NGX_HTTP_LOC_CONF_OFFSET, | |
244 0, | |
245 NULL }, | |
246 | |
247 { ngx_string("grpc_bind"), | |
248 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE12, | |
249 ngx_http_upstream_bind_set_slot, | |
250 NGX_HTTP_LOC_CONF_OFFSET, | |
251 offsetof(ngx_http_grpc_loc_conf_t, upstream.local), | |
252 NULL }, | |
253 | |
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254 { ngx_string("grpc_socket_keepalive"), |
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255 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, |
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256 ngx_conf_set_flag_slot, |
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257 NGX_HTTP_LOC_CONF_OFFSET, |
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258 offsetof(ngx_http_grpc_loc_conf_t, upstream.socket_keepalive), |
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259 NULL }, |
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260 |
7233 | 261 { ngx_string("grpc_connect_timeout"), |
262 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
263 ngx_conf_set_msec_slot, | |
264 NGX_HTTP_LOC_CONF_OFFSET, | |
265 offsetof(ngx_http_grpc_loc_conf_t, upstream.connect_timeout), | |
266 NULL }, | |
267 | |
268 { ngx_string("grpc_send_timeout"), | |
269 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
270 ngx_conf_set_msec_slot, | |
271 NGX_HTTP_LOC_CONF_OFFSET, | |
272 offsetof(ngx_http_grpc_loc_conf_t, upstream.send_timeout), | |
273 NULL }, | |
274 | |
275 { ngx_string("grpc_intercept_errors"), | |
276 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
277 ngx_conf_set_flag_slot, | |
278 NGX_HTTP_LOC_CONF_OFFSET, | |
279 offsetof(ngx_http_grpc_loc_conf_t, upstream.intercept_errors), | |
280 NULL }, | |
281 | |
282 { ngx_string("grpc_buffer_size"), | |
283 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
284 ngx_conf_set_size_slot, | |
285 NGX_HTTP_LOC_CONF_OFFSET, | |
286 offsetof(ngx_http_grpc_loc_conf_t, upstream.buffer_size), | |
287 NULL }, | |
288 | |
289 { ngx_string("grpc_read_timeout"), | |
290 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
291 ngx_conf_set_msec_slot, | |
292 NGX_HTTP_LOC_CONF_OFFSET, | |
293 offsetof(ngx_http_grpc_loc_conf_t, upstream.read_timeout), | |
294 NULL }, | |
295 | |
296 { ngx_string("grpc_next_upstream"), | |
297 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
298 ngx_conf_set_bitmask_slot, | |
299 NGX_HTTP_LOC_CONF_OFFSET, | |
300 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream), | |
301 &ngx_http_grpc_next_upstream_masks }, | |
302 | |
303 { ngx_string("grpc_next_upstream_tries"), | |
304 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
305 ngx_conf_set_num_slot, | |
306 NGX_HTTP_LOC_CONF_OFFSET, | |
307 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_tries), | |
308 NULL }, | |
309 | |
310 { ngx_string("grpc_next_upstream_timeout"), | |
311 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
312 ngx_conf_set_msec_slot, | |
313 NGX_HTTP_LOC_CONF_OFFSET, | |
314 offsetof(ngx_http_grpc_loc_conf_t, upstream.next_upstream_timeout), | |
315 NULL }, | |
316 | |
317 { ngx_string("grpc_set_header"), | |
318 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE2, | |
319 ngx_conf_set_keyval_slot, | |
320 NGX_HTTP_LOC_CONF_OFFSET, | |
321 offsetof(ngx_http_grpc_loc_conf_t, headers_source), | |
322 NULL }, | |
323 | |
324 { ngx_string("grpc_pass_header"), | |
325 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
326 ngx_conf_set_str_array_slot, | |
327 NGX_HTTP_LOC_CONF_OFFSET, | |
328 offsetof(ngx_http_grpc_loc_conf_t, upstream.pass_headers), | |
329 NULL }, | |
330 | |
331 { ngx_string("grpc_hide_header"), | |
332 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
333 ngx_conf_set_str_array_slot, | |
334 NGX_HTTP_LOC_CONF_OFFSET, | |
335 offsetof(ngx_http_grpc_loc_conf_t, upstream.hide_headers), | |
336 NULL }, | |
337 | |
338 { ngx_string("grpc_ignore_headers"), | |
339 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
340 ngx_conf_set_bitmask_slot, | |
341 NGX_HTTP_LOC_CONF_OFFSET, | |
342 offsetof(ngx_http_grpc_loc_conf_t, upstream.ignore_headers), | |
343 &ngx_http_upstream_ignore_headers_masks }, | |
344 | |
345 #if (NGX_HTTP_SSL) | |
346 | |
347 { ngx_string("grpc_ssl_session_reuse"), | |
348 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
349 ngx_conf_set_flag_slot, | |
350 NGX_HTTP_LOC_CONF_OFFSET, | |
351 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_session_reuse), | |
352 NULL }, | |
353 | |
354 { ngx_string("grpc_ssl_protocols"), | |
355 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_1MORE, | |
356 ngx_conf_set_bitmask_slot, | |
357 NGX_HTTP_LOC_CONF_OFFSET, | |
358 offsetof(ngx_http_grpc_loc_conf_t, ssl_protocols), | |
359 &ngx_http_grpc_ssl_protocols }, | |
360 | |
361 { ngx_string("grpc_ssl_ciphers"), | |
362 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
363 ngx_conf_set_str_slot, | |
364 NGX_HTTP_LOC_CONF_OFFSET, | |
365 offsetof(ngx_http_grpc_loc_conf_t, ssl_ciphers), | |
366 NULL }, | |
367 | |
368 { ngx_string("grpc_ssl_name"), | |
369 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
370 ngx_http_set_complex_value_slot, | |
371 NGX_HTTP_LOC_CONF_OFFSET, | |
372 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_name), | |
373 NULL }, | |
374 | |
375 { ngx_string("grpc_ssl_server_name"), | |
376 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
377 ngx_conf_set_flag_slot, | |
378 NGX_HTTP_LOC_CONF_OFFSET, | |
379 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_server_name), | |
380 NULL }, | |
381 | |
382 { ngx_string("grpc_ssl_verify"), | |
383 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_FLAG, | |
384 ngx_conf_set_flag_slot, | |
385 NGX_HTTP_LOC_CONF_OFFSET, | |
386 offsetof(ngx_http_grpc_loc_conf_t, upstream.ssl_verify), | |
387 NULL }, | |
388 | |
389 { ngx_string("grpc_ssl_verify_depth"), | |
390 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
391 ngx_conf_set_num_slot, | |
392 NGX_HTTP_LOC_CONF_OFFSET, | |
393 offsetof(ngx_http_grpc_loc_conf_t, ssl_verify_depth), | |
394 NULL }, | |
395 | |
396 { ngx_string("grpc_ssl_trusted_certificate"), | |
397 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
398 ngx_conf_set_str_slot, | |
399 NGX_HTTP_LOC_CONF_OFFSET, | |
400 offsetof(ngx_http_grpc_loc_conf_t, ssl_trusted_certificate), | |
401 NULL }, | |
402 | |
403 { ngx_string("grpc_ssl_crl"), | |
404 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
405 ngx_conf_set_str_slot, | |
406 NGX_HTTP_LOC_CONF_OFFSET, | |
407 offsetof(ngx_http_grpc_loc_conf_t, ssl_crl), | |
408 NULL }, | |
409 | |
410 { ngx_string("grpc_ssl_certificate"), | |
411 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
412 ngx_conf_set_str_slot, | |
413 NGX_HTTP_LOC_CONF_OFFSET, | |
414 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate), | |
415 NULL }, | |
416 | |
417 { ngx_string("grpc_ssl_certificate_key"), | |
418 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
419 ngx_conf_set_str_slot, | |
420 NGX_HTTP_LOC_CONF_OFFSET, | |
421 offsetof(ngx_http_grpc_loc_conf_t, ssl_certificate_key), | |
422 NULL }, | |
423 | |
424 { ngx_string("grpc_ssl_password_file"), | |
425 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1, | |
426 ngx_http_grpc_ssl_password_file, | |
427 NGX_HTTP_LOC_CONF_OFFSET, | |
428 0, | |
429 NULL }, | |
430 | |
431 #endif | |
432 | |
433 ngx_null_command | |
434 }; | |
435 | |
436 | |
437 static ngx_http_module_t ngx_http_grpc_module_ctx = { | |
7234
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438 ngx_http_grpc_add_variables, /* preconfiguration */ |
7233 | 439 NULL, /* postconfiguration */ |
440 | |
441 NULL, /* create main configuration */ | |
442 NULL, /* init main configuration */ | |
443 | |
444 NULL, /* create server configuration */ | |
445 NULL, /* merge server configuration */ | |
446 | |
447 ngx_http_grpc_create_loc_conf, /* create location configuration */ | |
448 ngx_http_grpc_merge_loc_conf /* merge location configuration */ | |
449 }; | |
450 | |
451 | |
452 ngx_module_t ngx_http_grpc_module = { | |
453 NGX_MODULE_V1, | |
454 &ngx_http_grpc_module_ctx, /* module context */ | |
455 ngx_http_grpc_commands, /* module directives */ | |
456 NGX_HTTP_MODULE, /* module type */ | |
457 NULL, /* init master */ | |
458 NULL, /* init module */ | |
459 NULL, /* init process */ | |
460 NULL, /* init thread */ | |
461 NULL, /* exit thread */ | |
462 NULL, /* exit process */ | |
463 NULL, /* exit master */ | |
464 NGX_MODULE_V1_PADDING | |
465 }; | |
466 | |
467 | |
468 static u_char ngx_http_grpc_connection_start[] = | |
469 "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n" /* connection preface */ | |
470 | |
471 "\x00\x00\x12\x04\x00\x00\x00\x00\x00" /* settings frame */ | |
472 "\x00\x01\x00\x00\x00\x00" /* header table size */ | |
473 "\x00\x02\x00\x00\x00\x00" /* disable push */ | |
474 "\x00\x04\x7f\xff\xff\xff" /* initial window */ | |
475 | |
476 "\x00\x00\x04\x08\x00\x00\x00\x00\x00" /* window update frame */ | |
477 "\x7f\xff\x00\x00"; | |
478 | |
479 | |
480 static ngx_keyval_t ngx_http_grpc_headers[] = { | |
481 { ngx_string("Content-Length"), ngx_string("$content_length") }, | |
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482 { ngx_string("TE"), ngx_string("$grpc_internal_trailers") }, |
7233 | 483 { ngx_string("Host"), ngx_string("") }, |
484 { ngx_string("Connection"), ngx_string("") }, | |
485 { ngx_string("Transfer-Encoding"), ngx_string("") }, | |
486 { ngx_string("Keep-Alive"), ngx_string("") }, | |
487 { ngx_string("Expect"), ngx_string("") }, | |
488 { ngx_string("Upgrade"), ngx_string("") }, | |
489 { ngx_null_string, ngx_null_string } | |
490 }; | |
491 | |
492 | |
493 static ngx_str_t ngx_http_grpc_hide_headers[] = { | |
494 ngx_string("Date"), | |
495 ngx_string("Server"), | |
496 ngx_string("X-Accel-Expires"), | |
497 ngx_string("X-Accel-Redirect"), | |
498 ngx_string("X-Accel-Limit-Rate"), | |
499 ngx_string("X-Accel-Buffering"), | |
500 ngx_string("X-Accel-Charset"), | |
501 ngx_null_string | |
502 }; | |
503 | |
504 | |
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505 static ngx_http_variable_t ngx_http_grpc_vars[] = { |
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506 |
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507 { ngx_string("grpc_internal_trailers"), NULL, |
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508 ngx_http_grpc_internal_trailers_variable, 0, |
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509 NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_NOHASH, 0 }, |
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510 |
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511 ngx_http_null_variable |
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512 }; |
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513 |
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514 |
7233 | 515 static ngx_int_t |
516 ngx_http_grpc_handler(ngx_http_request_t *r) | |
517 { | |
518 ngx_int_t rc; | |
519 ngx_http_upstream_t *u; | |
520 ngx_http_grpc_ctx_t *ctx; | |
521 ngx_http_grpc_loc_conf_t *glcf; | |
522 | |
523 if (ngx_http_upstream_create(r) != NGX_OK) { | |
524 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
525 } | |
526 | |
527 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
528 | |
529 u = r->upstream; | |
530 | |
531 #if (NGX_HTTP_SSL) | |
532 u->ssl = (glcf->upstream.ssl != NULL); | |
533 | |
534 if (u->ssl) { | |
535 ngx_str_set(&u->schema, "grpcs://"); | |
536 | |
537 } else { | |
538 ngx_str_set(&u->schema, "grpc://"); | |
539 } | |
540 #else | |
541 ngx_str_set(&u->schema, "grpc://"); | |
542 #endif | |
543 | |
544 u->output.tag = (ngx_buf_tag_t) &ngx_http_grpc_module; | |
545 | |
546 u->conf = &glcf->upstream; | |
547 | |
548 u->create_request = ngx_http_grpc_create_request; | |
549 u->reinit_request = ngx_http_grpc_reinit_request; | |
550 u->process_header = ngx_http_grpc_process_header; | |
551 u->abort_request = ngx_http_grpc_abort_request; | |
552 u->finalize_request = ngx_http_grpc_finalize_request; | |
553 | |
554 ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_grpc_ctx_t)); | |
555 if (ctx == NULL) { | |
556 return NGX_HTTP_INTERNAL_SERVER_ERROR; | |
557 } | |
558 | |
559 ctx->request = r; | |
560 | |
561 ngx_http_set_ctx(r, ctx, ngx_http_grpc_module); | |
562 | |
563 u->input_filter_init = ngx_http_grpc_filter_init; | |
564 u->input_filter = ngx_http_grpc_filter; | |
565 u->input_filter_ctx = ctx; | |
566 | |
567 r->request_body_no_buffering = 1; | |
568 | |
569 rc = ngx_http_read_client_request_body(r, ngx_http_upstream_init); | |
570 | |
571 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) { | |
572 return rc; | |
573 } | |
574 | |
575 return NGX_DONE; | |
576 } | |
577 | |
578 | |
579 static ngx_int_t | |
580 ngx_http_grpc_create_request(ngx_http_request_t *r) | |
581 { | |
582 u_char *p, *tmp, *key_tmp, *val_tmp, *headers_frame; | |
583 size_t len, tmp_len, key_len, val_len, uri_len; | |
584 uintptr_t escape; | |
585 ngx_buf_t *b; | |
586 ngx_uint_t i, next; | |
587 ngx_chain_t *cl, *body; | |
588 ngx_list_part_t *part; | |
589 ngx_table_elt_t *header; | |
590 ngx_http_upstream_t *u; | |
591 ngx_http_grpc_frame_t *f; | |
592 ngx_http_script_code_pt code; | |
593 ngx_http_grpc_loc_conf_t *glcf; | |
594 ngx_http_script_engine_t e, le; | |
595 ngx_http_script_len_code_pt lcode; | |
596 | |
597 u = r->upstream; | |
598 | |
599 glcf = ngx_http_get_module_loc_conf(r, ngx_http_grpc_module); | |
600 | |
601 len = sizeof(ngx_http_grpc_connection_start) - 1 | |
602 + sizeof(ngx_http_grpc_frame_t); /* headers frame */ | |
603 | |
604 /* :method header */ | |
605 | |
606 if (r->method == NGX_HTTP_GET || r->method == NGX_HTTP_POST) { | |
607 len += 1; | |
608 tmp_len = 0; | |
609 | |
610 } else { | |
611 len += 1 + NGX_HTTP_V2_INT_OCTETS + r->method_name.len; | |
612 tmp_len = r->method_name.len; | |
613 } | |
614 | |
615 /* :scheme header */ | |
616 | |
617 len += 1; | |
618 | |
619 /* :path header */ | |
620 | |
621 if (r->valid_unparsed_uri) { | |
622 escape = 0; | |
623 uri_len = r->unparsed_uri.len; | |
624 | |
625 } else { | |
626 escape = 2 * ngx_escape_uri(NULL, r->uri.data, r->uri.len, | |
627 NGX_ESCAPE_URI); | |
628 uri_len = r->uri.len + escape + sizeof("?") - 1 + r->args.len; | |
629 } | |
630 | |
631 len += 1 + NGX_HTTP_V2_INT_OCTETS + uri_len; | |
632 | |
633 if (tmp_len < uri_len) { | |
634 tmp_len = uri_len; | |
635 } | |
636 | |
637 /* :authority header */ | |
638 | |
639 if (!glcf->host_set) { | |
640 len += 1 + NGX_HTTP_V2_INT_OCTETS + glcf->host.len; | |
641 | |
642 if (tmp_len < glcf->host.len) { | |
643 tmp_len = glcf->host.len; | |
644 } | |
645 } | |
646 | |
647 /* other headers */ | |
648 | |
649 ngx_http_script_flush_no_cacheable_variables(r, glcf->headers.flushes); | |
650 ngx_memzero(&le, sizeof(ngx_http_script_engine_t)); | |
651 | |
652 le.ip = glcf->headers.lengths->elts; | |
653 le.request = r; | |
654 le.flushed = 1; | |
655 | |
656 while (*(uintptr_t *) le.ip) { | |
657 | |
658 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
659 key_len = lcode(&le); | |
660 | |
661 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
662 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
663 } | |
664 le.ip += sizeof(uintptr_t); | |
665 | |
666 if (val_len == 0) { | |
667 continue; | |
668 } | |
669 | |
670 len += 1 + NGX_HTTP_V2_INT_OCTETS + key_len | |
671 + NGX_HTTP_V2_INT_OCTETS + val_len; | |
672 | |
673 if (tmp_len < key_len) { | |
674 tmp_len = key_len; | |
675 } | |
676 | |
677 if (tmp_len < val_len) { | |
678 tmp_len = val_len; | |
679 } | |
680 } | |
681 | |
682 if (glcf->upstream.pass_request_headers) { | |
683 part = &r->headers_in.headers.part; | |
684 header = part->elts; | |
685 | |
686 for (i = 0; /* void */; i++) { | |
687 | |
688 if (i >= part->nelts) { | |
689 if (part->next == NULL) { | |
690 break; | |
691 } | |
692 | |
693 part = part->next; | |
694 header = part->elts; | |
695 i = 0; | |
696 } | |
697 | |
698 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
699 header[i].lowcase_key, header[i].key.len)) | |
700 { | |
701 continue; | |
702 } | |
703 | |
704 len += 1 + NGX_HTTP_V2_INT_OCTETS + header[i].key.len | |
705 + NGX_HTTP_V2_INT_OCTETS + header[i].value.len; | |
706 | |
707 if (tmp_len < header[i].key.len) { | |
708 tmp_len = header[i].key.len; | |
709 } | |
710 | |
711 if (tmp_len < header[i].value.len) { | |
712 tmp_len = header[i].value.len; | |
713 } | |
714 } | |
715 } | |
716 | |
717 /* continuation frames */ | |
718 | |
719 len += sizeof(ngx_http_grpc_frame_t) | |
720 * (len / NGX_HTTP_V2_DEFAULT_FRAME_SIZE); | |
721 | |
722 | |
723 b = ngx_create_temp_buf(r->pool, len); | |
724 if (b == NULL) { | |
725 return NGX_ERROR; | |
726 } | |
727 | |
728 cl = ngx_alloc_chain_link(r->pool); | |
729 if (cl == NULL) { | |
730 return NGX_ERROR; | |
731 } | |
732 | |
733 cl->buf = b; | |
734 cl->next = NULL; | |
735 | |
736 tmp = ngx_palloc(r->pool, tmp_len * 3); | |
737 if (tmp == NULL) { | |
738 return NGX_ERROR; | |
739 } | |
740 | |
741 key_tmp = tmp + tmp_len; | |
742 val_tmp = tmp + 2 * tmp_len; | |
743 | |
744 /* connection preface */ | |
745 | |
746 b->last = ngx_copy(b->last, ngx_http_grpc_connection_start, | |
747 sizeof(ngx_http_grpc_connection_start) - 1); | |
748 | |
749 /* headers frame */ | |
750 | |
751 headers_frame = b->last; | |
752 | |
753 f = (ngx_http_grpc_frame_t *) b->last; | |
754 b->last += sizeof(ngx_http_grpc_frame_t); | |
755 | |
756 f->length_0 = 0; | |
757 f->length_1 = 0; | |
758 f->length_2 = 0; | |
759 f->type = NGX_HTTP_V2_HEADERS_FRAME; | |
760 f->flags = 0; | |
761 f->stream_id_0 = 0; | |
762 f->stream_id_1 = 0; | |
763 f->stream_id_2 = 0; | |
764 f->stream_id_3 = 1; | |
765 | |
766 if (r->method == NGX_HTTP_GET) { | |
767 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_GET_INDEX); | |
768 | |
769 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
770 "grpc header: \":method: GET\""); | |
771 | |
772 } else if (r->method == NGX_HTTP_POST) { | |
773 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_METHOD_POST_INDEX); | |
774 | |
775 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
776 "grpc header: \":method: POST\""); | |
777 | |
778 } else { | |
779 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_METHOD_INDEX); | |
780 b->last = ngx_http_v2_write_value(b->last, r->method_name.data, | |
781 r->method_name.len, tmp); | |
782 | |
783 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
784 "grpc header: \":method: %V\"", &r->method_name); | |
785 } | |
786 | |
787 #if (NGX_HTTP_SSL) | |
788 if (glcf->ssl) { | |
789 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTPS_INDEX); | |
790 | |
791 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
792 "grpc header: \":scheme: https\""); | |
793 } else | |
794 #endif | |
795 { | |
796 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_SCHEME_HTTP_INDEX); | |
797 | |
798 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
799 "grpc header: \":scheme: http\""); | |
800 } | |
801 | |
802 if (r->valid_unparsed_uri) { | |
803 | |
804 if (r->unparsed_uri.len == 1 && r->unparsed_uri.data[0] == '/') { | |
805 *b->last++ = ngx_http_v2_indexed(NGX_HTTP_V2_PATH_ROOT_INDEX); | |
806 | |
807 } else { | |
808 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
809 b->last = ngx_http_v2_write_value(b->last, r->unparsed_uri.data, | |
810 r->unparsed_uri.len, tmp); | |
811 } | |
812 | |
813 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
814 "grpc header: \":path: %V\"", &r->unparsed_uri); | |
815 | |
816 } else if (escape || r->args.len > 0) { | |
817 p = val_tmp; | |
818 | |
819 if (escape) { | |
820 p = (u_char *) ngx_escape_uri(p, r->uri.data, r->uri.len, | |
821 NGX_ESCAPE_URI); | |
822 | |
823 } else { | |
824 p = ngx_copy(p, r->uri.data, r->uri.len); | |
825 } | |
826 | |
827 if (r->args.len > 0) { | |
828 *p++ = '?'; | |
829 p = ngx_copy(p, r->args.data, r->args.len); | |
830 } | |
831 | |
832 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
833 b->last = ngx_http_v2_write_value(b->last, val_tmp, p - val_tmp, tmp); | |
834 | |
835 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
836 "grpc header: \":path: %*s\"", p - val_tmp, val_tmp); | |
837 | |
838 } else { | |
839 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_PATH_INDEX); | |
840 b->last = ngx_http_v2_write_value(b->last, r->uri.data, | |
841 r->uri.len, tmp); | |
842 | |
843 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
844 "grpc header: \":path: %V\"", &r->uri); | |
845 } | |
846 | |
847 if (!glcf->host_set) { | |
848 *b->last++ = ngx_http_v2_inc_indexed(NGX_HTTP_V2_AUTHORITY_INDEX); | |
849 b->last = ngx_http_v2_write_value(b->last, glcf->host.data, | |
850 glcf->host.len, tmp); | |
851 | |
852 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
853 "grpc header: \":authority: %V\"", &glcf->host); | |
854 } | |
855 | |
856 ngx_memzero(&e, sizeof(ngx_http_script_engine_t)); | |
857 | |
858 e.ip = glcf->headers.values->elts; | |
859 e.request = r; | |
860 e.flushed = 1; | |
861 | |
862 le.ip = glcf->headers.lengths->elts; | |
863 | |
864 while (*(uintptr_t *) le.ip) { | |
865 | |
866 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
867 key_len = lcode(&le); | |
868 | |
869 for (val_len = 0; *(uintptr_t *) le.ip; val_len += lcode(&le)) { | |
870 lcode = *(ngx_http_script_len_code_pt *) le.ip; | |
871 } | |
872 le.ip += sizeof(uintptr_t); | |
873 | |
874 if (val_len == 0) { | |
875 e.skip = 1; | |
876 | |
877 while (*(uintptr_t *) e.ip) { | |
878 code = *(ngx_http_script_code_pt *) e.ip; | |
879 code((ngx_http_script_engine_t *) &e); | |
880 } | |
881 e.ip += sizeof(uintptr_t); | |
882 | |
883 e.skip = 0; | |
884 | |
885 continue; | |
886 } | |
887 | |
888 *b->last++ = 0; | |
889 | |
890 e.pos = key_tmp; | |
891 | |
892 code = *(ngx_http_script_code_pt *) e.ip; | |
893 code((ngx_http_script_engine_t *) &e); | |
894 | |
895 b->last = ngx_http_v2_write_name(b->last, key_tmp, key_len, tmp); | |
896 | |
897 e.pos = val_tmp; | |
898 | |
899 while (*(uintptr_t *) e.ip) { | |
900 code = *(ngx_http_script_code_pt *) e.ip; | |
901 code((ngx_http_script_engine_t *) &e); | |
902 } | |
903 e.ip += sizeof(uintptr_t); | |
904 | |
905 b->last = ngx_http_v2_write_value(b->last, val_tmp, val_len, tmp); | |
906 | |
907 #if (NGX_DEBUG) | |
908 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
909 ngx_strlow(key_tmp, key_tmp, key_len); | |
910 | |
911 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
912 "grpc header: \"%*s: %*s\"", | |
913 key_len, key_tmp, val_len, val_tmp); | |
914 } | |
915 #endif | |
916 } | |
917 | |
918 if (glcf->upstream.pass_request_headers) { | |
919 part = &r->headers_in.headers.part; | |
920 header = part->elts; | |
921 | |
922 for (i = 0; /* void */; i++) { | |
923 | |
924 if (i >= part->nelts) { | |
925 if (part->next == NULL) { | |
926 break; | |
927 } | |
928 | |
929 part = part->next; | |
930 header = part->elts; | |
931 i = 0; | |
932 } | |
933 | |
934 if (ngx_hash_find(&glcf->headers.hash, header[i].hash, | |
935 header[i].lowcase_key, header[i].key.len)) | |
936 { | |
937 continue; | |
938 } | |
939 | |
940 *b->last++ = 0; | |
941 | |
942 b->last = ngx_http_v2_write_name(b->last, header[i].key.data, | |
943 header[i].key.len, tmp); | |
944 | |
945 b->last = ngx_http_v2_write_value(b->last, header[i].value.data, | |
946 header[i].value.len, tmp); | |
947 | |
948 #if (NGX_DEBUG) | |
949 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
950 ngx_strlow(tmp, header[i].key.data, header[i].key.len); | |
951 | |
952 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
953 "grpc header: \"%*s: %V\"", | |
954 header[i].key.len, tmp, &header[i].value); | |
955 } | |
956 #endif | |
957 } | |
958 } | |
959 | |
960 /* update headers frame length */ | |
961 | |
962 len = b->last - headers_frame - sizeof(ngx_http_grpc_frame_t); | |
963 | |
964 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
965 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
966 next = 1; | |
967 | |
968 } else { | |
969 next = 0; | |
970 } | |
971 | |
972 f = (ngx_http_grpc_frame_t *) headers_frame; | |
973 | |
974 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
975 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
976 f->length_2 = (u_char) (len & 0xff); | |
977 | |
978 /* create additional continuation frames */ | |
979 | |
980 p = headers_frame; | |
981 | |
982 while (next) { | |
983 p += sizeof(ngx_http_grpc_frame_t) + NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
984 len = b->last - p; | |
985 | |
986 ngx_memmove(p + sizeof(ngx_http_grpc_frame_t), p, len); | |
987 b->last += sizeof(ngx_http_grpc_frame_t); | |
988 | |
989 if (len > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
990 len = NGX_HTTP_V2_DEFAULT_FRAME_SIZE; | |
991 next = 1; | |
992 | |
993 } else { | |
994 next = 0; | |
995 } | |
996 | |
997 f = (ngx_http_grpc_frame_t *) p; | |
998 | |
999 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
1000 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
1001 f->length_2 = (u_char) (len & 0xff); | |
1002 f->type = NGX_HTTP_V2_CONTINUATION_FRAME; | |
1003 f->flags = 0; | |
1004 f->stream_id_0 = 0; | |
1005 f->stream_id_1 = 0; | |
1006 f->stream_id_2 = 0; | |
1007 f->stream_id_3 = 1; | |
1008 } | |
1009 | |
1010 f->flags |= NGX_HTTP_V2_END_HEADERS_FLAG; | |
1011 | |
1012 #if (NGX_DEBUG) | |
1013 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1014 u_char buf[512]; | |
1015 size_t n, m; | |
1016 | |
1017 n = ngx_min(b->last - b->pos, 256); | |
1018 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1019 | |
1020 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1021 "grpc header: %*s%s, len: %uz", | |
1022 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1023 b->last - b->pos); | |
1024 } | |
1025 #endif | |
1026 | |
1027 if (r->request_body_no_buffering) { | |
1028 | |
1029 u->request_bufs = cl; | |
1030 | |
1031 } else { | |
1032 | |
1033 body = u->request_bufs; | |
1034 u->request_bufs = cl; | |
1035 | |
1036 if (body == NULL) { | |
1037 f = (ngx_http_grpc_frame_t *) headers_frame; | |
1038 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1039 } | |
1040 | |
1041 while (body) { | |
1042 b = ngx_alloc_buf(r->pool); | |
1043 if (b == NULL) { | |
1044 return NGX_ERROR; | |
1045 } | |
1046 | |
1047 ngx_memcpy(b, body->buf, sizeof(ngx_buf_t)); | |
1048 | |
1049 cl->next = ngx_alloc_chain_link(r->pool); | |
1050 if (cl->next == NULL) { | |
1051 return NGX_ERROR; | |
1052 } | |
1053 | |
1054 cl = cl->next; | |
1055 cl->buf = b; | |
1056 | |
1057 body = body->next; | |
1058 } | |
1059 | |
1060 b->last_buf = 1; | |
1061 } | |
1062 | |
1063 u->output.output_filter = ngx_http_grpc_body_output_filter; | |
1064 u->output.filter_ctx = r; | |
1065 | |
1066 b->flush = 1; | |
1067 cl->next = NULL; | |
1068 | |
1069 return NGX_OK; | |
1070 } | |
1071 | |
1072 | |
1073 static ngx_int_t | |
1074 ngx_http_grpc_reinit_request(ngx_http_request_t *r) | |
1075 { | |
1076 ngx_http_grpc_ctx_t *ctx; | |
1077 | |
1078 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
1079 | |
1080 if (ctx == NULL) { | |
1081 return NGX_OK; | |
1082 } | |
1083 | |
1084 ctx->state = 0; | |
1085 ctx->header_sent = 0; | |
1086 ctx->output_closed = 0; | |
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|
1087 ctx->output_blocked = 0; |
7233 | 1088 ctx->parsing_headers = 0; |
1089 ctx->end_stream = 0; | |
7349
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|
1090 ctx->done = 0; |
7233 | 1091 ctx->status = 0; |
1092 ctx->connection = NULL; | |
1093 | |
1094 return NGX_OK; | |
1095 } | |
1096 | |
1097 | |
1098 static ngx_int_t | |
1099 ngx_http_grpc_body_output_filter(void *data, ngx_chain_t *in) | |
1100 { | |
1101 ngx_http_request_t *r = data; | |
1102 | |
1103 off_t file_pos; | |
1104 u_char *p, *pos, *start; | |
1105 size_t len, limit; | |
1106 ngx_buf_t *b; | |
1107 ngx_int_t rc; | |
1108 ngx_uint_t next, last; | |
1109 ngx_chain_t *cl, *out, **ll; | |
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1110 ngx_http_upstream_t *u; |
7233 | 1111 ngx_http_grpc_ctx_t *ctx; |
1112 ngx_http_grpc_frame_t *f; | |
1113 | |
1114 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1115 "grpc output filter"); | |
1116 | |
1117 ctx = ngx_http_grpc_get_ctx(r); | |
1118 | |
1119 if (ctx == NULL) { | |
1120 return NGX_ERROR; | |
1121 } | |
1122 | |
1123 if (in) { | |
1124 if (ngx_chain_add_copy(r->pool, &ctx->in, in) != NGX_OK) { | |
1125 return NGX_ERROR; | |
1126 } | |
1127 } | |
1128 | |
1129 out = NULL; | |
1130 ll = &out; | |
1131 | |
1132 if (!ctx->header_sent) { | |
1133 /* first buffer contains headers */ | |
1134 | |
1135 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1136 "grpc output header"); | |
1137 | |
1138 ctx->header_sent = 1; | |
1139 | |
1140 if (ctx->id != 1) { | |
1141 /* | |
1142 * keepalive connection: skip connection preface, | |
1143 * update stream identifiers | |
1144 */ | |
1145 | |
1146 b = ctx->in->buf; | |
1147 b->pos += sizeof(ngx_http_grpc_connection_start) - 1; | |
1148 | |
1149 p = b->pos; | |
1150 | |
1151 while (p < b->last) { | |
1152 f = (ngx_http_grpc_frame_t *) p; | |
1153 p += sizeof(ngx_http_grpc_frame_t); | |
1154 | |
1155 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1156 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1157 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1158 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1159 | |
1160 p += (f->length_0 << 16) + (f->length_1 << 8) + f->length_2; | |
1161 } | |
1162 } | |
1163 | |
1164 if (ctx->in->buf->last_buf) { | |
1165 ctx->output_closed = 1; | |
1166 } | |
1167 | |
1168 *ll = ctx->in; | |
1169 ll = &ctx->in->next; | |
1170 | |
1171 ctx->in = ctx->in->next; | |
1172 } | |
1173 | |
1174 if (ctx->out) { | |
1175 /* queued control frames */ | |
1176 | |
1177 *ll = ctx->out; | |
1178 | |
1179 for (cl = ctx->out, ll = &cl->next; cl; cl = cl->next) { | |
1180 ll = &cl->next; | |
1181 } | |
1182 | |
1183 ctx->out = NULL; | |
1184 } | |
1185 | |
1186 f = NULL; | |
1187 last = 0; | |
1188 | |
1189 limit = ngx_max(0, ctx->send_window); | |
1190 | |
1191 if (limit > ctx->connection->send_window) { | |
1192 limit = ctx->connection->send_window; | |
1193 } | |
1194 | |
1195 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1196 "grpc output limit: %uz w:%z:%uz", | |
1197 limit, ctx->send_window, ctx->connection->send_window); | |
1198 | |
1199 #if (NGX_SUPPRESS_WARN) | |
1200 file_pos = 0; | |
1201 pos = NULL; | |
1202 cl = NULL; | |
1203 #endif | |
1204 | |
1205 in = ctx->in; | |
1206 | |
1207 while (in && limit > 0) { | |
1208 | |
1209 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1210 "grpc output in l:%d f:%d %p, pos %p, size: %z " | |
1211 "file: %O, size: %O", | |
1212 in->buf->last_buf, | |
1213 in->buf->in_file, | |
1214 in->buf->start, in->buf->pos, | |
1215 in->buf->last - in->buf->pos, | |
1216 in->buf->file_pos, | |
1217 in->buf->file_last - in->buf->file_pos); | |
1218 | |
1219 if (ngx_buf_special(in->buf)) { | |
1220 goto next; | |
1221 } | |
1222 | |
1223 if (in->buf->in_file) { | |
1224 file_pos = in->buf->file_pos; | |
1225 | |
1226 } else { | |
1227 pos = in->buf->pos; | |
1228 } | |
1229 | |
1230 next = 0; | |
1231 | |
1232 do { | |
1233 | |
1234 cl = ngx_http_grpc_get_buf(r, ctx); | |
1235 if (cl == NULL) { | |
1236 return NGX_ERROR; | |
1237 } | |
1238 | |
1239 b = cl->buf; | |
1240 | |
1241 f = (ngx_http_grpc_frame_t *) b->last; | |
1242 b->last += sizeof(ngx_http_grpc_frame_t); | |
1243 | |
1244 *ll = cl; | |
1245 ll = &cl->next; | |
1246 | |
1247 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
1248 if (cl == NULL) { | |
1249 return NGX_ERROR; | |
1250 } | |
1251 | |
1252 b = cl->buf; | |
1253 start = b->start; | |
1254 | |
1255 ngx_memcpy(b, in->buf, sizeof(ngx_buf_t)); | |
1256 | |
1257 /* | |
1258 * restore b->start to preserve memory allocated in the buffer, | |
1259 * to reuse it later for headers and control frames | |
1260 */ | |
1261 | |
1262 b->start = start; | |
1263 | |
1264 if (in->buf->in_file) { | |
1265 b->file_pos = file_pos; | |
1266 file_pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1267 | |
1268 if (file_pos >= in->buf->file_last) { | |
1269 file_pos = in->buf->file_last; | |
1270 next = 1; | |
1271 } | |
1272 | |
1273 b->file_last = file_pos; | |
1274 len = (ngx_uint_t) (file_pos - b->file_pos); | |
1275 | |
1276 } else { | |
1277 b->pos = pos; | |
1278 pos += ngx_min(NGX_HTTP_V2_DEFAULT_FRAME_SIZE, limit); | |
1279 | |
1280 if (pos >= in->buf->last) { | |
1281 pos = in->buf->last; | |
1282 next = 1; | |
1283 } | |
1284 | |
1285 b->last = pos; | |
1286 len = (ngx_uint_t) (pos - b->pos); | |
1287 } | |
1288 | |
1289 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; | |
1290 b->shadow = in->buf; | |
1291 b->last_shadow = next; | |
1292 | |
1293 b->last_buf = 0; | |
1294 b->last_in_chain = 0; | |
1295 | |
1296 *ll = cl; | |
1297 ll = &cl->next; | |
1298 | |
1299 f->length_0 = (u_char) ((len >> 16) & 0xff); | |
1300 f->length_1 = (u_char) ((len >> 8) & 0xff); | |
1301 f->length_2 = (u_char) (len & 0xff); | |
1302 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1303 f->flags = 0; | |
1304 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1305 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1306 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1307 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1308 | |
1309 limit -= len; | |
1310 ctx->send_window -= len; | |
1311 ctx->connection->send_window -= len; | |
1312 | |
1313 } while (!next && limit > 0); | |
1314 | |
1315 if (!next) { | |
1316 /* | |
1317 * if the buffer wasn't fully sent due to flow control limits, | |
1318 * preserve position for future use | |
1319 */ | |
1320 | |
1321 if (in->buf->in_file) { | |
1322 in->buf->file_pos = file_pos; | |
1323 | |
1324 } else { | |
1325 in->buf->pos = pos; | |
1326 } | |
1327 | |
1328 break; | |
1329 } | |
1330 | |
1331 next: | |
1332 | |
1333 if (in->buf->last_buf) { | |
1334 last = 1; | |
1335 } | |
1336 | |
1337 in = in->next; | |
1338 } | |
1339 | |
1340 ctx->in = in; | |
1341 | |
1342 if (last) { | |
1343 | |
1344 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1345 "grpc output last"); | |
1346 | |
1347 ctx->output_closed = 1; | |
1348 | |
1349 if (f) { | |
1350 f->flags |= NGX_HTTP_V2_END_STREAM_FLAG; | |
1351 | |
1352 } else { | |
1353 cl = ngx_http_grpc_get_buf(r, ctx); | |
1354 if (cl == NULL) { | |
1355 return NGX_ERROR; | |
1356 } | |
1357 | |
1358 b = cl->buf; | |
1359 | |
1360 f = (ngx_http_grpc_frame_t *) b->last; | |
1361 b->last += sizeof(ngx_http_grpc_frame_t); | |
1362 | |
1363 f->length_0 = 0; | |
1364 f->length_1 = 0; | |
1365 f->length_2 = 0; | |
1366 f->type = NGX_HTTP_V2_DATA_FRAME; | |
1367 f->flags = NGX_HTTP_V2_END_STREAM_FLAG; | |
1368 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
1369 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
1370 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
1371 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
1372 | |
1373 *ll = cl; | |
1374 ll = &cl->next; | |
1375 } | |
1376 | |
1377 cl->buf->last_buf = 1; | |
1378 } | |
1379 | |
1380 *ll = NULL; | |
1381 | |
1382 #if (NGX_DEBUG) | |
1383 | |
1384 for (cl = out; cl; cl = cl->next) { | |
1385 ngx_log_debug7(NGX_LOG_DEBUG_EVENT, r->connection->log, 0, | |
1386 "grpc output out l:%d f:%d %p, pos %p, size: %z " | |
1387 "file: %O, size: %O", | |
1388 cl->buf->last_buf, | |
1389 cl->buf->in_file, | |
1390 cl->buf->start, cl->buf->pos, | |
1391 cl->buf->last - cl->buf->pos, | |
1392 cl->buf->file_pos, | |
1393 cl->buf->file_last - cl->buf->file_pos); | |
1394 } | |
1395 | |
1396 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1397 "grpc output limit: %uz w:%z:%uz", | |
1398 limit, ctx->send_window, ctx->connection->send_window); | |
1399 | |
1400 #endif | |
1401 | |
1402 rc = ngx_chain_writer(&r->upstream->writer, out); | |
1403 | |
1404 ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out, | |
1405 (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter); | |
1406 | |
1407 for (cl = ctx->free; cl; cl = cl->next) { | |
1408 | |
1409 /* mark original buffers as sent */ | |
1410 | |
1411 if (cl->buf->shadow) { | |
1412 if (cl->buf->last_shadow) { | |
1413 b = cl->buf->shadow; | |
1414 b->pos = b->last; | |
1415 } | |
1416 | |
1417 cl->buf->shadow = NULL; | |
1418 } | |
1419 } | |
1420 | |
1421 if (rc == NGX_OK && ctx->in) { | |
1422 rc = NGX_AGAIN; | |
1423 } | |
1424 | |
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parents:
7349
diff
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|
1425 if (rc == NGX_AGAIN) { |
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1426 ctx->output_blocked = 1; |
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1427 |
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parents:
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1428 } else { |
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1429 ctx->output_blocked = 0; |
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parents:
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1430 } |
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parents:
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1431 |
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parents:
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1432 if (ctx->done) { |
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1433 |
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gRPC: improved keepalive handling.
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parents:
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1434 /* |
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parents:
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changeset
|
1435 * We have already got the response and were sending some additional |
f6047a579ca1
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parents:
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diff
changeset
|
1436 * control frames. Even if there is still something unsent, stop |
f6047a579ca1
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parents:
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diff
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|
1437 * here anyway. |
f6047a579ca1
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parents:
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1438 */ |
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gRPC: improved keepalive handling.
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parents:
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1439 |
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1440 u = r->upstream; |
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1441 u->length = 0; |
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1442 |
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1443 if (ctx->in == NULL |
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1444 && ctx->out == NULL |
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1445 && ctx->output_closed |
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1446 && !ctx->output_blocked |
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1447 && ctx->state == ngx_http_grpc_st_start) |
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1448 { |
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1449 u->keepalive = 1; |
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1450 } |
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1451 |
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1452 ngx_post_event(u->peer.connection->read, &ngx_posted_events); |
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1453 } |
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1454 |
7233 | 1455 return rc; |
1456 } | |
1457 | |
1458 | |
1459 static ngx_int_t | |
1460 ngx_http_grpc_process_header(ngx_http_request_t *r) | |
1461 { | |
1462 ngx_str_t *status_line; | |
1463 ngx_int_t rc, status; | |
1464 ngx_buf_t *b; | |
1465 ngx_table_elt_t *h; | |
1466 ngx_http_upstream_t *u; | |
1467 ngx_http_grpc_ctx_t *ctx; | |
1468 ngx_http_upstream_header_t *hh; | |
1469 ngx_http_upstream_main_conf_t *umcf; | |
1470 | |
1471 u = r->upstream; | |
1472 b = &u->buffer; | |
1473 | |
1474 #if (NGX_DEBUG) | |
1475 if (r->connection->log->log_level & NGX_LOG_DEBUG_HTTP) { | |
1476 u_char buf[512]; | |
1477 size_t n, m; | |
1478 | |
1479 n = ngx_min(b->last - b->pos, 256); | |
1480 m = ngx_hex_dump(buf, b->pos, n) - buf; | |
1481 | |
1482 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1483 "grpc response: %*s%s, len: %uz", | |
1484 m, buf, b->last - b->pos > 256 ? "..." : "", | |
1485 b->last - b->pos); | |
1486 } | |
1487 #endif | |
1488 | |
1489 ctx = ngx_http_grpc_get_ctx(r); | |
1490 | |
1491 if (ctx == NULL) { | |
1492 return NGX_ERROR; | |
1493 } | |
1494 | |
1495 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module); | |
1496 | |
1497 for ( ;; ) { | |
1498 | |
1499 if (ctx->state < ngx_http_grpc_st_payload) { | |
1500 | |
1501 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1502 | |
1503 if (rc == NGX_AGAIN) { | |
1504 | |
1505 /* | |
1506 * there can be a lot of window update frames, | |
1507 * so we reset buffer if it is empty and we haven't | |
1508 * started parsing headers yet | |
1509 */ | |
1510 | |
1511 if (!ctx->parsing_headers) { | |
1512 b->pos = b->start; | |
1513 b->last = b->pos; | |
1514 } | |
1515 | |
1516 return NGX_AGAIN; | |
1517 } | |
1518 | |
1519 if (rc == NGX_ERROR) { | |
1520 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1521 } | |
1522 | |
1523 /* | |
1524 * RFC 7540 says that implementations MUST discard frames | |
1525 * that have unknown or unsupported types. However, extension | |
1526 * frames that appear in the middle of a header block are | |
1527 * not permitted. Also, for obvious reasons CONTINUATION frames | |
1528 * cannot appear before headers, and DATA frames are not expected | |
1529 * to appear before all headers are parsed. | |
1530 */ | |
1531 | |
1532 if (ctx->type == NGX_HTTP_V2_DATA_FRAME | |
1533 || (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1534 && !ctx->parsing_headers) | |
1535 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1536 && ctx->parsing_headers)) | |
1537 { | |
1538 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1539 "upstream sent unexpected http2 frame: %d", | |
1540 ctx->type); | |
1541 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1542 } | |
1543 | |
1544 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1545 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1546 "upstream sent frame for unknown stream %ui", | |
1547 ctx->stream_id); | |
1548 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1549 } | |
1550 } | |
1551 | |
1552 /* frame payload */ | |
1553 | |
1554 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
1555 | |
1556 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
1557 | |
1558 if (rc == NGX_AGAIN) { | |
1559 return NGX_AGAIN; | |
1560 } | |
1561 | |
1562 if (rc == NGX_ERROR) { | |
1563 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1564 } | |
1565 | |
1566 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1567 "upstream rejected request with error %ui", | |
1568 ctx->error); | |
1569 | |
1570 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1571 } | |
1572 | |
1573 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
1574 | |
1575 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
1576 | |
1577 if (rc == NGX_AGAIN) { | |
1578 return NGX_AGAIN; | |
1579 } | |
1580 | |
1581 if (rc == NGX_ERROR) { | |
1582 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1583 } | |
1584 | |
1585 /* | |
1586 * If stream_id is lower than one we use, our | |
1587 * request won't be processed and needs to be retried. | |
1588 * If stream_id is greater or equal to the one we use, | |
1589 * we can continue normally (except we can't use this | |
1590 * connection for additional requests). If there is | |
1591 * a real error, the connection will be closed. | |
1592 */ | |
1593 | |
1594 if (ctx->stream_id < ctx->id) { | |
1595 | |
1596 /* TODO: we can retry non-idempotent requests */ | |
1597 | |
1598 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1599 "upstream sent goaway with error %ui", | |
1600 ctx->error); | |
1601 | |
1602 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1603 } | |
1604 | |
1605 continue; | |
1606 } | |
1607 | |
1608 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
1609 | |
1610 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
1611 | |
1612 if (rc == NGX_AGAIN) { | |
1613 return NGX_AGAIN; | |
1614 } | |
1615 | |
1616 if (rc == NGX_ERROR) { | |
1617 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1618 } | |
1619 | |
1620 if (ctx->in) { | |
1621 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1622 } | |
1623 | |
1624 continue; | |
1625 } | |
1626 | |
1627 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
1628 | |
1629 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
1630 | |
1631 if (rc == NGX_AGAIN) { | |
1632 return NGX_AGAIN; | |
1633 } | |
1634 | |
1635 if (rc == NGX_ERROR) { | |
1636 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1637 } | |
1638 | |
1639 if (ctx->in) { | |
1640 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1641 } | |
1642 | |
1643 continue; | |
1644 } | |
1645 | |
1646 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
1647 | |
1648 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
1649 | |
1650 if (rc == NGX_AGAIN) { | |
1651 return NGX_AGAIN; | |
1652 } | |
1653 | |
1654 if (rc == NGX_ERROR) { | |
1655 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1656 } | |
1657 | |
1658 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
1659 continue; | |
1660 } | |
1661 | |
1662 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
1663 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1664 "upstream sent unexpected push promise frame"); | |
1665 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1666 } | |
1667 | |
1668 if (ctx->type != NGX_HTTP_V2_HEADERS_FRAME | |
1669 && ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME) | |
1670 { | |
1671 /* priority, unknown frames */ | |
1672 | |
1673 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1674 ctx->rest -= b->last - b->pos; | |
1675 b->pos = b->last; | |
1676 return NGX_AGAIN; | |
1677 } | |
1678 | |
1679 b->pos += ctx->rest; | |
1680 ctx->rest = 0; | |
1681 ctx->state = ngx_http_grpc_st_start; | |
1682 | |
1683 continue; | |
1684 } | |
1685 | |
1686 /* headers */ | |
1687 | |
1688 for ( ;; ) { | |
1689 | |
1690 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
1691 | |
1692 if (rc == NGX_AGAIN) { | |
1693 break; | |
1694 } | |
1695 | |
1696 if (rc == NGX_OK) { | |
1697 | |
1698 /* a header line has been parsed successfully */ | |
1699 | |
1700 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1701 "grpc header: \"%V: %V\"", | |
1702 &ctx->name, &ctx->value); | |
1703 | |
1704 if (ctx->name.len && ctx->name.data[0] == ':') { | |
1705 | |
1706 if (ctx->name.len != sizeof(":status") - 1 | |
1707 || ngx_strncmp(ctx->name.data, ":status", | |
1708 sizeof(":status") - 1) | |
1709 != 0) | |
1710 { | |
1711 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1712 "upstream sent invalid header \"%V: %V\"", | |
1713 &ctx->name, &ctx->value); | |
1714 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1715 } | |
1716 | |
1717 if (ctx->status) { | |
1718 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1719 "upstream sent duplicate :status header"); | |
1720 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1721 } | |
1722 | |
1723 status_line = &ctx->value; | |
1724 | |
1725 if (status_line->len != 3) { | |
1726 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1727 "upstream sent invalid :status \"%V\"", | |
1728 status_line); | |
1729 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1730 } | |
1731 | |
1732 status = ngx_atoi(status_line->data, 3); | |
1733 | |
1734 if (status == NGX_ERROR) { | |
1735 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1736 "upstream sent invalid :status \"%V\"", | |
1737 status_line); | |
1738 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1739 } | |
1740 | |
1741 if (status < NGX_HTTP_OK) { | |
1742 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1743 "upstream sent unexpected :status \"%V\"", | |
1744 status_line); | |
1745 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1746 } | |
1747 | |
1748 u->headers_in.status_n = status; | |
1749 | |
1750 if (u->state && u->state->status == 0) { | |
1751 u->state->status = status; | |
1752 } | |
1753 | |
1754 ctx->status = 1; | |
1755 | |
1756 continue; | |
1757 | |
1758 } else if (!ctx->status) { | |
1759 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1760 "upstream sent no :status header"); | |
1761 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1762 } | |
1763 | |
1764 h = ngx_list_push(&u->headers_in.headers); | |
1765 if (h == NULL) { | |
1766 return NGX_ERROR; | |
1767 } | |
1768 | |
1769 h->key = ctx->name; | |
1770 h->value = ctx->value; | |
1771 h->lowcase_key = h->key.data; | |
1772 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
1773 | |
1774 hh = ngx_hash_find(&umcf->headers_in_hash, h->hash, | |
1775 h->lowcase_key, h->key.len); | |
1776 | |
1777 if (hh && hh->handler(r, h, hh->offset) != NGX_OK) { | |
1778 return NGX_ERROR; | |
1779 } | |
1780 | |
1781 continue; | |
1782 } | |
1783 | |
1784 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
1785 | |
1786 /* a whole header has been parsed successfully */ | |
1787 | |
1788 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1789 "grpc header done"); | |
1790 | |
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1791 if (ctx->end_stream) { |
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1792 u->headers_in.content_length_n = 0; |
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1793 |
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1794 if (ctx->in == NULL |
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1795 && ctx->out == NULL |
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1796 && ctx->output_closed |
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1797 && !ctx->output_blocked |
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1798 && b->last == b->pos) |
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1799 { |
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1800 u->keepalive = 1; |
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1801 } |
7233 | 1802 } |
1803 | |
1804 return NGX_OK; | |
1805 } | |
1806 | |
1807 /* there was error while a header line parsing */ | |
1808 | |
1809 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1810 "upstream sent invalid header"); | |
1811 | |
1812 return NGX_HTTP_UPSTREAM_INVALID_HEADER; | |
1813 } | |
1814 | |
1815 /* rc == NGX_AGAIN */ | |
1816 | |
1817 if (ctx->rest == 0) { | |
1818 ctx->state = ngx_http_grpc_st_start; | |
1819 continue; | |
1820 } | |
1821 | |
1822 return NGX_AGAIN; | |
1823 } | |
1824 } | |
1825 | |
1826 | |
1827 static ngx_int_t | |
1828 ngx_http_grpc_filter_init(void *data) | |
1829 { | |
1830 ngx_http_grpc_ctx_t *ctx = data; | |
1831 | |
1832 ngx_http_request_t *r; | |
1833 ngx_http_upstream_t *u; | |
1834 | |
1835 r = ctx->request; | |
1836 u = r->upstream; | |
1837 | |
1838 u->length = 1; | |
1839 | |
1840 if (ctx->end_stream) { | |
1841 u->length = 0; | |
1842 } | |
1843 | |
1844 return NGX_OK; | |
1845 } | |
1846 | |
1847 | |
1848 static ngx_int_t | |
1849 ngx_http_grpc_filter(void *data, ssize_t bytes) | |
1850 { | |
1851 ngx_http_grpc_ctx_t *ctx = data; | |
1852 | |
1853 ngx_int_t rc; | |
1854 ngx_buf_t *b, *buf; | |
1855 ngx_chain_t *cl, **ll; | |
1856 ngx_table_elt_t *h; | |
1857 ngx_http_request_t *r; | |
1858 ngx_http_upstream_t *u; | |
1859 | |
1860 r = ctx->request; | |
1861 u = r->upstream; | |
1862 b = &u->buffer; | |
1863 | |
1864 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
1865 "grpc filter bytes:%z", bytes); | |
1866 | |
1867 b->pos = b->last; | |
1868 b->last += bytes; | |
1869 | |
1870 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) { | |
1871 ll = &cl->next; | |
1872 } | |
1873 | |
1874 for ( ;; ) { | |
1875 | |
1876 if (ctx->state < ngx_http_grpc_st_payload) { | |
1877 | |
1878 rc = ngx_http_grpc_parse_frame(r, ctx, b); | |
1879 | |
1880 if (rc == NGX_AGAIN) { | |
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1881 |
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1882 if (ctx->done) { |
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1883 |
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1884 /* |
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1885 * We have finished parsing the response and the |
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1886 * remaining control frames. If there are unsent |
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1887 * control frames, post a write event to send them. |
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1888 */ |
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1889 |
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1890 if (ctx->out) { |
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1891 ngx_post_event(u->peer.connection->write, |
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1892 &ngx_posted_events); |
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1893 return NGX_AGAIN; |
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1894 } |
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1895 |
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1896 u->length = 0; |
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1897 |
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1898 if (ctx->in == NULL |
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1899 && ctx->output_closed |
7350
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1900 && !ctx->output_blocked |
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1901 && ctx->state == ngx_http_grpc_st_start) |
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1902 { |
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1903 u->keepalive = 1; |
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1904 } |
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1905 |
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1906 break; |
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|
1907 } |
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1908 |
7233 | 1909 return NGX_AGAIN; |
1910 } | |
1911 | |
1912 if (rc == NGX_ERROR) { | |
1913 return NGX_ERROR; | |
1914 } | |
1915 | |
1916 if ((ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME | |
1917 && !ctx->parsing_headers) | |
1918 || (ctx->type != NGX_HTTP_V2_CONTINUATION_FRAME | |
1919 && ctx->parsing_headers)) | |
1920 { | |
1921 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1922 "upstream sent unexpected http2 frame: %d", | |
1923 ctx->type); | |
1924 return NGX_ERROR; | |
1925 } | |
1926 | |
1927 if (ctx->type == NGX_HTTP_V2_DATA_FRAME) { | |
1928 | |
1929 if (ctx->stream_id != ctx->id) { | |
1930 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1931 "upstream sent data frame " | |
1932 "for unknown stream %ui", | |
1933 ctx->stream_id); | |
1934 return NGX_ERROR; | |
1935 } | |
1936 | |
1937 if (ctx->rest > ctx->recv_window) { | |
1938 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1939 "upstream violated stream flow control, " | |
1940 "received %uz data frame with window %uz", | |
1941 ctx->rest, ctx->recv_window); | |
1942 return NGX_ERROR; | |
1943 } | |
1944 | |
1945 if (ctx->rest > ctx->connection->recv_window) { | |
1946 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1947 "upstream violated connection flow control, " | |
1948 "received %uz data frame with window %uz", | |
1949 ctx->rest, ctx->connection->recv_window); | |
1950 return NGX_ERROR; | |
1951 } | |
1952 | |
1953 ctx->recv_window -= ctx->rest; | |
1954 ctx->connection->recv_window -= ctx->rest; | |
1955 | |
1956 if (ctx->connection->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4 | |
1957 || ctx->recv_window < NGX_HTTP_V2_MAX_WINDOW / 4) | |
1958 { | |
1959 if (ngx_http_grpc_send_window_update(r, ctx) != NGX_OK) { | |
1960 return NGX_ERROR; | |
1961 } | |
1962 | |
1963 ngx_post_event(u->peer.connection->write, | |
1964 &ngx_posted_events); | |
1965 } | |
1966 } | |
1967 | |
1968 if (ctx->stream_id && ctx->stream_id != ctx->id) { | |
1969 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
1970 "upstream sent frame for unknown stream %ui", | |
1971 ctx->stream_id); | |
1972 return NGX_ERROR; | |
1973 } | |
1974 | |
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1975 if (ctx->stream_id && ctx->done) { |
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1976 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
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1977 "upstream sent frame for closed stream %ui", |
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1978 ctx->stream_id); |
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1979 return NGX_ERROR; |
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1980 } |
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1981 |
7233 | 1982 ctx->padding = 0; |
1983 } | |
1984 | |
1985 if (ctx->state == ngx_http_grpc_st_padding) { | |
1986 | |
1987 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
1988 ctx->rest -= b->last - b->pos; | |
1989 b->pos = b->last; | |
1990 return NGX_AGAIN; | |
1991 } | |
1992 | |
1993 b->pos += ctx->rest; | |
1994 ctx->rest = 0; | |
1995 ctx->state = ngx_http_grpc_st_start; | |
1996 | |
1997 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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1998 ctx->done = 1; |
7233 | 1999 } |
2000 | |
2001 continue; | |
2002 } | |
2003 | |
2004 /* frame payload */ | |
2005 | |
2006 if (ctx->type == NGX_HTTP_V2_RST_STREAM_FRAME) { | |
2007 | |
2008 rc = ngx_http_grpc_parse_rst_stream(r, ctx, b); | |
2009 | |
2010 if (rc == NGX_AGAIN) { | |
2011 return NGX_AGAIN; | |
2012 } | |
2013 | |
2014 if (rc == NGX_ERROR) { | |
2015 return NGX_ERROR; | |
2016 } | |
2017 | |
2018 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2019 "upstream rejected request with error %ui", | |
2020 ctx->error); | |
2021 | |
2022 return NGX_ERROR; | |
2023 } | |
2024 | |
2025 if (ctx->type == NGX_HTTP_V2_GOAWAY_FRAME) { | |
2026 | |
2027 rc = ngx_http_grpc_parse_goaway(r, ctx, b); | |
2028 | |
2029 if (rc == NGX_AGAIN) { | |
2030 return NGX_AGAIN; | |
2031 } | |
2032 | |
2033 if (rc == NGX_ERROR) { | |
2034 return NGX_ERROR; | |
2035 } | |
2036 | |
2037 /* | |
2038 * If stream_id is lower than one we use, our | |
2039 * request won't be processed and needs to be retried. | |
2040 * If stream_id is greater or equal to the one we use, | |
2041 * we can continue normally (except we can't use this | |
2042 * connection for additional requests). If there is | |
2043 * a real error, the connection will be closed. | |
2044 */ | |
2045 | |
2046 if (ctx->stream_id < ctx->id) { | |
2047 | |
2048 /* TODO: we can retry non-idempotent requests */ | |
2049 | |
2050 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2051 "upstream sent goaway with error %ui", | |
2052 ctx->error); | |
2053 | |
2054 return NGX_ERROR; | |
2055 } | |
2056 | |
2057 continue; | |
2058 } | |
2059 | |
2060 if (ctx->type == NGX_HTTP_V2_WINDOW_UPDATE_FRAME) { | |
2061 | |
2062 rc = ngx_http_grpc_parse_window_update(r, ctx, b); | |
2063 | |
2064 if (rc == NGX_AGAIN) { | |
2065 return NGX_AGAIN; | |
2066 } | |
2067 | |
2068 if (rc == NGX_ERROR) { | |
2069 return NGX_ERROR; | |
2070 } | |
2071 | |
2072 if (ctx->in) { | |
2073 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2074 } | |
2075 | |
2076 continue; | |
2077 } | |
2078 | |
2079 if (ctx->type == NGX_HTTP_V2_SETTINGS_FRAME) { | |
2080 | |
2081 rc = ngx_http_grpc_parse_settings(r, ctx, b); | |
2082 | |
2083 if (rc == NGX_AGAIN) { | |
2084 return NGX_AGAIN; | |
2085 } | |
2086 | |
2087 if (rc == NGX_ERROR) { | |
2088 return NGX_ERROR; | |
2089 } | |
2090 | |
2091 if (ctx->in) { | |
2092 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2093 } | |
2094 | |
2095 continue; | |
2096 } | |
2097 | |
2098 if (ctx->type == NGX_HTTP_V2_PING_FRAME) { | |
2099 | |
2100 rc = ngx_http_grpc_parse_ping(r, ctx, b); | |
2101 | |
2102 if (rc == NGX_AGAIN) { | |
2103 return NGX_AGAIN; | |
2104 } | |
2105 | |
2106 if (rc == NGX_ERROR) { | |
2107 return NGX_ERROR; | |
2108 } | |
2109 | |
2110 ngx_post_event(u->peer.connection->write, &ngx_posted_events); | |
2111 continue; | |
2112 } | |
2113 | |
2114 if (ctx->type == NGX_HTTP_V2_PUSH_PROMISE_FRAME) { | |
2115 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2116 "upstream sent unexpected push promise frame"); | |
2117 return NGX_ERROR; | |
2118 } | |
2119 | |
2120 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME | |
2121 || ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) | |
2122 { | |
2123 for ( ;; ) { | |
2124 | |
2125 rc = ngx_http_grpc_parse_header(r, ctx, b); | |
2126 | |
2127 if (rc == NGX_AGAIN) { | |
2128 break; | |
2129 } | |
2130 | |
2131 if (rc == NGX_OK) { | |
2132 | |
2133 /* a header line has been parsed successfully */ | |
2134 | |
2135 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2136 "grpc trailer: \"%V: %V\"", | |
2137 &ctx->name, &ctx->value); | |
2138 | |
2139 if (ctx->name.len && ctx->name.data[0] == ':') { | |
2140 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2141 "upstream sent invalid " | |
2142 "trailer \"%V: %V\"", | |
2143 &ctx->name, &ctx->value); | |
2144 return NGX_ERROR; | |
2145 } | |
2146 | |
2147 h = ngx_list_push(&u->headers_in.trailers); | |
2148 if (h == NULL) { | |
2149 return NGX_ERROR; | |
2150 } | |
2151 | |
2152 h->key = ctx->name; | |
2153 h->value = ctx->value; | |
2154 h->lowcase_key = h->key.data; | |
2155 h->hash = ngx_hash_key(h->key.data, h->key.len); | |
2156 | |
2157 continue; | |
2158 } | |
2159 | |
2160 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { | |
2161 | |
2162 /* a whole header has been parsed successfully */ | |
2163 | |
2164 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2165 "grpc trailer done"); | |
2166 | |
2167 if (ctx->end_stream) { | |
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2168 ctx->done = 1; |
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|
2169 break; |
7233 | 2170 } |
2171 | |
2172 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2173 "upstream sent trailer without " | |
2174 "end stream flag"); | |
2175 return NGX_ERROR; | |
2176 } | |
2177 | |
2178 /* there was error while a header line parsing */ | |
2179 | |
2180 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2181 "upstream sent invalid trailer"); | |
2182 | |
2183 return NGX_ERROR; | |
2184 } | |
2185 | |
7349
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|
2186 if (rc == NGX_HTTP_PARSE_HEADER_DONE) { |
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|
2187 continue; |
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|
2188 } |
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|
2189 |
7233 | 2190 /* rc == NGX_AGAIN */ |
2191 | |
2192 if (ctx->rest == 0) { | |
2193 ctx->state = ngx_http_grpc_st_start; | |
2194 continue; | |
2195 } | |
2196 | |
2197 return NGX_AGAIN; | |
2198 } | |
2199 | |
2200 if (ctx->type != NGX_HTTP_V2_DATA_FRAME) { | |
2201 | |
2202 /* priority, unknown frames */ | |
2203 | |
2204 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2205 ctx->rest -= b->last - b->pos; | |
2206 b->pos = b->last; | |
2207 return NGX_AGAIN; | |
2208 } | |
2209 | |
2210 b->pos += ctx->rest; | |
2211 ctx->rest = 0; | |
2212 ctx->state = ngx_http_grpc_st_start; | |
2213 | |
2214 continue; | |
2215 } | |
2216 | |
2217 /* | |
2218 * data frame: | |
2219 * | |
2220 * +---------------+ | |
2221 * |Pad Length? (8)| | |
2222 * +---------------+-----------------------------------------------+ | |
2223 * | Data (*) ... | |
2224 * +---------------------------------------------------------------+ | |
2225 * | Padding (*) ... | |
2226 * +---------------------------------------------------------------+ | |
2227 */ | |
2228 | |
2229 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2230 | |
2231 if (ctx->rest == 0) { | |
2232 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2233 "upstream sent too short http2 frame"); | |
2234 return NGX_ERROR; | |
2235 } | |
2236 | |
2237 if (b->pos == b->last) { | |
2238 return NGX_AGAIN; | |
2239 } | |
2240 | |
2241 ctx->flags &= ~NGX_HTTP_V2_PADDED_FLAG; | |
2242 ctx->padding = *b->pos++; | |
2243 ctx->rest -= 1; | |
2244 | |
2245 if (ctx->padding > ctx->rest) { | |
2246 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2247 "upstream sent http2 frame with too long " | |
2248 "padding: %d in frame %uz", | |
2249 ctx->padding, ctx->rest); | |
2250 return NGX_ERROR; | |
2251 } | |
2252 | |
2253 continue; | |
2254 } | |
2255 | |
2256 if (ctx->rest == ctx->padding) { | |
2257 goto done; | |
2258 } | |
2259 | |
2260 if (b->pos == b->last) { | |
2261 return NGX_AGAIN; | |
2262 } | |
2263 | |
2264 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs); | |
2265 if (cl == NULL) { | |
2266 return NGX_ERROR; | |
2267 } | |
2268 | |
2269 *ll = cl; | |
2270 ll = &cl->next; | |
2271 | |
2272 buf = cl->buf; | |
2273 | |
2274 buf->flush = 1; | |
2275 buf->memory = 1; | |
2276 | |
2277 buf->pos = b->pos; | |
2278 buf->tag = u->output.tag; | |
2279 | |
2280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2281 "grpc output buf %p", buf->pos); | |
2282 | |
2283 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2284 | |
2285 ctx->rest -= b->last - b->pos; | |
2286 b->pos = b->last; | |
2287 buf->last = b->pos; | |
2288 | |
2289 return NGX_AGAIN; | |
2290 } | |
2291 | |
2292 b->pos += ctx->rest - ctx->padding; | |
2293 buf->last = b->pos; | |
2294 ctx->rest = ctx->padding; | |
2295 | |
2296 done: | |
2297 | |
2298 if (ctx->padding) { | |
2299 ctx->state = ngx_http_grpc_st_padding; | |
2300 continue; | |
2301 } | |
2302 | |
2303 ctx->state = ngx_http_grpc_st_start; | |
2304 | |
2305 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
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2306 ctx->done = 1; |
7233 | 2307 } |
2308 } | |
2309 | |
2310 return NGX_OK; | |
2311 } | |
2312 | |
2313 | |
2314 static ngx_int_t | |
2315 ngx_http_grpc_parse_frame(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2316 ngx_buf_t *b) | |
2317 { | |
2318 u_char ch, *p; | |
2319 ngx_http_grpc_state_e state; | |
2320 | |
2321 state = ctx->state; | |
2322 | |
2323 for (p = b->pos; p < b->last; p++) { | |
2324 ch = *p; | |
2325 | |
2326 #if 0 | |
2327 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2328 "grpc frame byte: %02Xd, s:%d", ch, state); | |
2329 #endif | |
2330 | |
2331 switch (state) { | |
2332 | |
2333 case ngx_http_grpc_st_start: | |
2334 ctx->rest = ch << 16; | |
2335 state = ngx_http_grpc_st_length_2; | |
2336 break; | |
2337 | |
2338 case ngx_http_grpc_st_length_2: | |
2339 ctx->rest |= ch << 8; | |
2340 state = ngx_http_grpc_st_length_3; | |
2341 break; | |
2342 | |
2343 case ngx_http_grpc_st_length_3: | |
2344 ctx->rest |= ch; | |
2345 | |
2346 if (ctx->rest > NGX_HTTP_V2_DEFAULT_FRAME_SIZE) { | |
2347 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2348 "upstream sent too large http2 frame: %uz", | |
2349 ctx->rest); | |
2350 return NGX_ERROR; | |
2351 } | |
2352 | |
2353 state = ngx_http_grpc_st_type; | |
2354 break; | |
2355 | |
2356 case ngx_http_grpc_st_type: | |
2357 ctx->type = ch; | |
2358 state = ngx_http_grpc_st_flags; | |
2359 break; | |
2360 | |
2361 case ngx_http_grpc_st_flags: | |
2362 ctx->flags = ch; | |
2363 state = ngx_http_grpc_st_stream_id; | |
2364 break; | |
2365 | |
2366 case ngx_http_grpc_st_stream_id: | |
2367 ctx->stream_id = (ch & 0x7f) << 24; | |
2368 state = ngx_http_grpc_st_stream_id_2; | |
2369 break; | |
2370 | |
2371 case ngx_http_grpc_st_stream_id_2: | |
2372 ctx->stream_id |= ch << 16; | |
2373 state = ngx_http_grpc_st_stream_id_3; | |
2374 break; | |
2375 | |
2376 case ngx_http_grpc_st_stream_id_3: | |
2377 ctx->stream_id |= ch << 8; | |
2378 state = ngx_http_grpc_st_stream_id_4; | |
2379 break; | |
2380 | |
2381 case ngx_http_grpc_st_stream_id_4: | |
2382 ctx->stream_id |= ch; | |
2383 | |
2384 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2385 "grpc frame: %d, len: %uz, f:%d, i:%ui", | |
2386 ctx->type, ctx->rest, ctx->flags, ctx->stream_id); | |
2387 | |
2388 b->pos = p + 1; | |
2389 | |
2390 ctx->state = ngx_http_grpc_st_payload; | |
2391 ctx->frame_state = 0; | |
2392 | |
2393 return NGX_OK; | |
2394 | |
2395 /* suppress warning */ | |
2396 case ngx_http_grpc_st_payload: | |
2397 case ngx_http_grpc_st_padding: | |
2398 break; | |
2399 } | |
2400 } | |
2401 | |
2402 b->pos = p; | |
2403 ctx->state = state; | |
2404 | |
2405 return NGX_AGAIN; | |
2406 } | |
2407 | |
2408 | |
2409 static ngx_int_t | |
2410 ngx_http_grpc_parse_header(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2411 ngx_buf_t *b) | |
2412 { | |
2413 u_char ch, *p, *last; | |
2414 size_t min; | |
2415 ngx_int_t rc; | |
2416 enum { | |
2417 sw_start = 0, | |
2418 sw_padding_length, | |
2419 sw_dependency, | |
2420 sw_dependency_2, | |
2421 sw_dependency_3, | |
2422 sw_dependency_4, | |
2423 sw_weight, | |
2424 sw_fragment, | |
2425 sw_padding | |
2426 } state; | |
2427 | |
2428 state = ctx->frame_state; | |
2429 | |
2430 if (state == sw_start) { | |
2431 | |
2432 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2433 "grpc parse header: start"); | |
2434 | |
2435 if (ctx->type == NGX_HTTP_V2_HEADERS_FRAME) { | |
2436 ctx->parsing_headers = 1; | |
2437 ctx->fragment_state = 0; | |
2438 | |
2439 min = (ctx->flags & NGX_HTTP_V2_PADDED_FLAG ? 1 : 0) | |
2440 + (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG ? 5 : 0); | |
2441 | |
2442 if (ctx->rest < min) { | |
2443 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2444 "upstream sent headers frame " | |
2445 "with invalid length: %uz", | |
2446 ctx->rest); | |
2447 return NGX_ERROR; | |
2448 } | |
2449 | |
2450 if (ctx->flags & NGX_HTTP_V2_END_STREAM_FLAG) { | |
2451 ctx->end_stream = 1; | |
2452 } | |
2453 | |
2454 if (ctx->flags & NGX_HTTP_V2_PADDED_FLAG) { | |
2455 state = sw_padding_length; | |
2456 | |
2457 } else if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2458 state = sw_dependency; | |
2459 | |
2460 } else { | |
2461 state = sw_fragment; | |
2462 } | |
2463 | |
2464 } else if (ctx->type == NGX_HTTP_V2_CONTINUATION_FRAME) { | |
2465 state = sw_fragment; | |
2466 } | |
2467 | |
2468 ctx->padding = 0; | |
7242
25a4353633a0
gRPC: fixed missing state save in frame header parsing.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7240
diff
changeset
|
2469 ctx->frame_state = state; |
7233 | 2470 } |
2471 | |
2472 if (state < sw_fragment) { | |
2473 | |
2474 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2475 last = b->last; | |
2476 | |
2477 } else { | |
2478 last = b->pos + ctx->rest; | |
2479 } | |
2480 | |
2481 for (p = b->pos; p < last; p++) { | |
2482 ch = *p; | |
2483 | |
2484 #if 0 | |
2485 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2486 "grpc header byte: %02Xd s:%d", ch, state); | |
2487 #endif | |
2488 | |
2489 /* | |
2490 * headers frame: | |
2491 * | |
2492 * +---------------+ | |
2493 * |Pad Length? (8)| | |
2494 * +-+-------------+----------------------------------------------+ | |
2495 * |E| Stream Dependency? (31) | | |
2496 * +-+-------------+----------------------------------------------+ | |
2497 * | Weight? (8) | | |
2498 * +-+-------------+----------------------------------------------+ | |
2499 * | Header Block Fragment (*) ... | |
2500 * +--------------------------------------------------------------+ | |
2501 * | Padding (*) ... | |
2502 * +--------------------------------------------------------------+ | |
2503 */ | |
2504 | |
2505 switch (state) { | |
2506 | |
2507 case sw_padding_length: | |
2508 | |
2509 ctx->padding = ch; | |
2510 | |
2511 if (ctx->flags & NGX_HTTP_V2_PRIORITY_FLAG) { | |
2512 state = sw_dependency; | |
2513 break; | |
2514 } | |
2515 | |
2516 goto fragment; | |
2517 | |
2518 case sw_dependency: | |
2519 state = sw_dependency_2; | |
2520 break; | |
2521 | |
2522 case sw_dependency_2: | |
2523 state = sw_dependency_3; | |
2524 break; | |
2525 | |
2526 case sw_dependency_3: | |
2527 state = sw_dependency_4; | |
2528 break; | |
2529 | |
2530 case sw_dependency_4: | |
2531 state = sw_weight; | |
2532 break; | |
2533 | |
2534 case sw_weight: | |
2535 goto fragment; | |
2536 | |
2537 /* suppress warning */ | |
2538 case sw_start: | |
2539 case sw_fragment: | |
2540 case sw_padding: | |
2541 break; | |
2542 } | |
2543 } | |
2544 | |
2545 ctx->rest -= p - b->pos; | |
2546 b->pos = p; | |
2547 | |
2548 ctx->frame_state = state; | |
2549 return NGX_AGAIN; | |
2550 | |
2551 fragment: | |
2552 | |
2553 p++; | |
2554 ctx->rest -= p - b->pos; | |
2555 b->pos = p; | |
2556 | |
2557 if (ctx->padding > ctx->rest) { | |
2558 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2559 "upstream sent http2 frame with too long " | |
2560 "padding: %d in frame %uz", | |
2561 ctx->padding, ctx->rest); | |
2562 return NGX_ERROR; | |
2563 } | |
2564 | |
2565 state = sw_fragment; | |
2566 ctx->frame_state = state; | |
2567 } | |
2568 | |
2569 if (state == sw_fragment) { | |
2570 | |
2571 rc = ngx_http_grpc_parse_fragment(r, ctx, b); | |
2572 | |
2573 if (rc == NGX_AGAIN) { | |
2574 return NGX_AGAIN; | |
2575 } | |
2576 | |
2577 if (rc == NGX_ERROR) { | |
2578 return NGX_ERROR; | |
2579 } | |
2580 | |
2581 if (rc == NGX_OK) { | |
2582 return NGX_OK; | |
2583 } | |
2584 | |
2585 /* rc == NGX_DONE */ | |
2586 | |
2587 state = sw_padding; | |
2588 ctx->frame_state = state; | |
2589 } | |
2590 | |
2591 if (state == sw_padding) { | |
2592 | |
2593 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
2594 | |
2595 ctx->rest -= b->last - b->pos; | |
2596 b->pos = b->last; | |
2597 | |
2598 return NGX_AGAIN; | |
2599 } | |
2600 | |
2601 b->pos += ctx->rest; | |
2602 ctx->rest = 0; | |
2603 | |
2604 ctx->state = ngx_http_grpc_st_start; | |
2605 | |
2606 if (ctx->flags & NGX_HTTP_V2_END_HEADERS_FLAG) { | |
2607 | |
2608 if (ctx->fragment_state) { | |
2609 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2610 "upstream sent truncated http2 header"); | |
2611 return NGX_ERROR; | |
2612 } | |
2613 | |
2614 ctx->parsing_headers = 0; | |
2615 | |
2616 return NGX_HTTP_PARSE_HEADER_DONE; | |
2617 } | |
2618 | |
2619 return NGX_AGAIN; | |
2620 } | |
2621 | |
2622 /* unreachable */ | |
2623 | |
2624 return NGX_ERROR; | |
2625 } | |
2626 | |
2627 | |
2628 static ngx_int_t | |
2629 ngx_http_grpc_parse_fragment(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
2630 ngx_buf_t *b) | |
2631 { | |
2632 u_char ch, *p, *last; | |
2633 size_t size; | |
2634 ngx_uint_t index, size_update; | |
2635 enum { | |
2636 sw_start = 0, | |
2637 sw_index, | |
2638 sw_name_length, | |
2639 sw_name_length_2, | |
2640 sw_name_length_3, | |
2641 sw_name_length_4, | |
2642 sw_name, | |
2643 sw_name_bytes, | |
2644 sw_value_length, | |
2645 sw_value_length_2, | |
2646 sw_value_length_3, | |
2647 sw_value_length_4, | |
2648 sw_value, | |
2649 sw_value_bytes | |
2650 } state; | |
2651 | |
2652 /* header block fragment */ | |
2653 | |
2654 #if 0 | |
2655 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2656 "grpc header fragment %p:%p rest:%uz", | |
2657 b->pos, b->last, ctx->rest); | |
2658 #endif | |
2659 | |
2660 if (b->last - b->pos < (ssize_t) ctx->rest - ctx->padding) { | |
2661 last = b->last; | |
2662 | |
2663 } else { | |
2664 last = b->pos + ctx->rest - ctx->padding; | |
2665 } | |
2666 | |
2667 state = ctx->fragment_state; | |
2668 | |
2669 for (p = b->pos; p < last; p++) { | |
2670 ch = *p; | |
2671 | |
2672 #if 0 | |
2673 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2674 "grpc header byte: %02Xd s:%d", ch, state); | |
2675 #endif | |
2676 | |
2677 switch (state) { | |
2678 | |
2679 case sw_start: | |
2680 ctx->index = 0; | |
2681 | |
2682 if ((ch & 0x80) == 0x80) { | |
2683 /* | |
2684 * indexed header: | |
2685 * | |
2686 * 0 1 2 3 4 5 6 7 | |
2687 * +---+---+---+---+---+---+---+---+ | |
2688 * | 1 | Index (7+) | | |
2689 * +---+---------------------------+ | |
2690 */ | |
2691 | |
2692 index = ch & ~0x80; | |
2693 | |
2694 if (index == 0 || index > 61) { | |
2695 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2696 "upstream sent invalid http2 " | |
2697 "table index: %ui", index); | |
2698 return NGX_ERROR; | |
2699 } | |
2700 | |
2701 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2702 "grpc indexed header: %ui", index); | |
2703 | |
2704 ctx->index = index; | |
2705 ctx->literal = 0; | |
2706 | |
2707 goto done; | |
2708 | |
2709 } else if ((ch & 0xc0) == 0x40) { | |
2710 /* | |
2711 * literal header with incremental indexing: | |
2712 * | |
2713 * 0 1 2 3 4 5 6 7 | |
2714 * +---+---+---+---+---+---+---+---+ | |
2715 * | 0 | 1 | Index (6+) | | |
2716 * +---+---+-----------------------+ | |
2717 * | H | Value Length (7+) | | |
2718 * +---+---------------------------+ | |
2719 * | Value String (Length octets) | | |
2720 * +-------------------------------+ | |
2721 * | |
2722 * 0 1 2 3 4 5 6 7 | |
2723 * +---+---+---+---+---+---+---+---+ | |
2724 * | 0 | 1 | 0 | | |
2725 * +---+---+-----------------------+ | |
2726 * | H | Name Length (7+) | | |
2727 * +---+---------------------------+ | |
2728 * | Name String (Length octets) | | |
2729 * +---+---------------------------+ | |
2730 * | H | Value Length (7+) | | |
2731 * +---+---------------------------+ | |
2732 * | Value String (Length octets) | | |
2733 * +-------------------------------+ | |
2734 */ | |
2735 | |
2736 index = ch & ~0xc0; | |
2737 | |
2738 if (index > 61) { | |
2739 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2740 "upstream sent invalid http2 " | |
2741 "table index: %ui", index); | |
2742 return NGX_ERROR; | |
2743 } | |
2744 | |
2745 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2746 "grpc literal header: %ui", index); | |
2747 | |
2748 if (index == 0) { | |
2749 state = sw_name_length; | |
2750 break; | |
2751 } | |
2752 | |
2753 ctx->index = index; | |
2754 ctx->literal = 1; | |
2755 | |
2756 state = sw_value_length; | |
2757 break; | |
2758 | |
2759 } else if ((ch & 0xe0) == 0x20) { | |
2760 /* | |
2761 * dynamic table size update: | |
2762 * | |
2763 * 0 1 2 3 4 5 6 7 | |
2764 * +---+---+---+---+---+---+---+---+ | |
2765 * | 0 | 0 | 1 | Max size (5+) | | |
2766 * +---+---------------------------+ | |
2767 */ | |
2768 | |
2769 size_update = ch & ~0xe0; | |
2770 | |
2771 if (size_update > 0) { | |
2772 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2773 "upstream sent invalid http2 " | |
2774 "dynamic table size update: %ui", | |
2775 size_update); | |
2776 return NGX_ERROR; | |
2777 } | |
2778 | |
2779 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2780 "grpc table size update: %ui", size_update); | |
2781 | |
2782 break; | |
2783 | |
2784 } else if ((ch & 0xf0) == 0x10) { | |
2785 /* | |
2786 * literal header field never indexed: | |
2787 * | |
2788 * 0 1 2 3 4 5 6 7 | |
2789 * +---+---+---+---+---+---+---+---+ | |
2790 * | 0 | 0 | 0 | 1 | Index (4+) | | |
2791 * +---+---+-----------------------+ | |
2792 * | H | Value Length (7+) | | |
2793 * +---+---------------------------+ | |
2794 * | Value String (Length octets) | | |
2795 * +-------------------------------+ | |
2796 * | |
2797 * 0 1 2 3 4 5 6 7 | |
2798 * +---+---+---+---+---+---+---+---+ | |
2799 * | 0 | 0 | 0 | 1 | 0 | | |
2800 * +---+---+-----------------------+ | |
2801 * | H | Name Length (7+) | | |
2802 * +---+---------------------------+ | |
2803 * | Name String (Length octets) | | |
2804 * +---+---------------------------+ | |
2805 * | H | Value Length (7+) | | |
2806 * +---+---------------------------+ | |
2807 * | Value String (Length octets) | | |
2808 * +-------------------------------+ | |
2809 */ | |
2810 | |
2811 index = ch & ~0xf0; | |
2812 | |
2813 if (index == 0x0f) { | |
2814 ctx->index = index; | |
2815 ctx->literal = 1; | |
2816 state = sw_index; | |
2817 break; | |
2818 } | |
2819 | |
2820 if (index == 0) { | |
2821 state = sw_name_length; | |
2822 break; | |
2823 } | |
2824 | |
2825 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2826 "grpc literal header never indexed: %ui", | |
2827 index); | |
2828 | |
2829 ctx->index = index; | |
2830 ctx->literal = 1; | |
2831 | |
2832 state = sw_value_length; | |
2833 break; | |
2834 | |
2835 } else if ((ch & 0xf0) == 0x00) { | |
2836 /* | |
2837 * literal header field without indexing: | |
2838 * | |
2839 * 0 1 2 3 4 5 6 7 | |
2840 * +---+---+---+---+---+---+---+---+ | |
2841 * | 0 | 0 | 0 | 0 | Index (4+) | | |
2842 * +---+---+-----------------------+ | |
2843 * | H | Value Length (7+) | | |
2844 * +---+---------------------------+ | |
2845 * | Value String (Length octets) | | |
2846 * +-------------------------------+ | |
2847 * | |
2848 * 0 1 2 3 4 5 6 7 | |
2849 * +---+---+---+---+---+---+---+---+ | |
2850 * | 0 | 0 | 0 | 0 | 0 | | |
2851 * +---+---+-----------------------+ | |
2852 * | H | Name Length (7+) | | |
2853 * +---+---------------------------+ | |
2854 * | Name String (Length octets) | | |
2855 * +---+---------------------------+ | |
2856 * | H | Value Length (7+) | | |
2857 * +---+---------------------------+ | |
2858 * | Value String (Length octets) | | |
2859 * +-------------------------------+ | |
2860 */ | |
2861 | |
2862 index = ch & ~0xf0; | |
2863 | |
2864 if (index == 0x0f) { | |
2865 ctx->index = index; | |
2866 ctx->literal = 1; | |
2867 state = sw_index; | |
2868 break; | |
2869 } | |
2870 | |
2871 if (index == 0) { | |
2872 state = sw_name_length; | |
2873 break; | |
2874 } | |
2875 | |
2876 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2877 "grpc literal header without indexing: %ui", | |
2878 index); | |
2879 | |
2880 ctx->index = index; | |
2881 ctx->literal = 1; | |
2882 | |
2883 state = sw_value_length; | |
2884 break; | |
2885 } | |
2886 | |
2887 /* not reached */ | |
2888 | |
2889 return NGX_ERROR; | |
2890 | |
2891 case sw_index: | |
2892 ctx->index = ctx->index + (ch & ~0x80); | |
2893 | |
2894 if (ch & 0x80) { | |
2895 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2896 "upstream sent http2 table index " | |
2897 "with continuation flag"); | |
2898 return NGX_ERROR; | |
2899 } | |
2900 | |
2901 if (ctx->index > 61) { | |
2902 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2903 "upstream sent invalid http2 " | |
2904 "table index: %ui", ctx->index); | |
2905 return NGX_ERROR; | |
2906 } | |
2907 | |
2908 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2909 "grpc header index: %ui", ctx->index); | |
2910 | |
2911 state = sw_value_length; | |
2912 break; | |
2913 | |
2914 case sw_name_length: | |
2915 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
2916 ctx->field_length = ch & ~0x80; | |
2917 | |
2918 if (ctx->field_length == 0x7f) { | |
2919 state = sw_name_length_2; | |
2920 break; | |
2921 } | |
2922 | |
2923 if (ctx->field_length == 0) { | |
2924 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2925 "upstream sent zero http2 " | |
2926 "header name length"); | |
2927 return NGX_ERROR; | |
2928 } | |
2929 | |
2930 state = sw_name; | |
2931 break; | |
2932 | |
2933 case sw_name_length_2: | |
2934 ctx->field_length += ch & ~0x80; | |
2935 | |
2936 if (ch & 0x80) { | |
2937 state = sw_name_length_3; | |
2938 break; | |
2939 } | |
2940 | |
2941 state = sw_name; | |
2942 break; | |
2943 | |
2944 case sw_name_length_3: | |
2945 ctx->field_length += (ch & ~0x80) << 7; | |
2946 | |
2947 if (ch & 0x80) { | |
2948 state = sw_name_length_4; | |
2949 break; | |
2950 } | |
2951 | |
2952 state = sw_name; | |
2953 break; | |
2954 | |
2955 case sw_name_length_4: | |
2956 ctx->field_length += (ch & ~0x80) << 14; | |
2957 | |
2958 if (ch & 0x80) { | |
2959 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
2960 "upstream sent too large http2 " | |
2961 "header name length"); | |
2962 return NGX_ERROR; | |
2963 } | |
2964 | |
2965 state = sw_name; | |
2966 break; | |
2967 | |
2968 case sw_name: | |
2969 ctx->name.len = ctx->field_huffman ? | |
2970 ctx->field_length * 8 / 5 : ctx->field_length; | |
2971 | |
2972 ctx->name.data = ngx_pnalloc(r->pool, ctx->name.len + 1); | |
2973 if (ctx->name.data == NULL) { | |
2974 return NGX_ERROR; | |
2975 } | |
2976 | |
2977 ctx->field_end = ctx->name.data; | |
2978 ctx->field_rest = ctx->field_length; | |
2979 ctx->field_state = 0; | |
2980 | |
2981 state = sw_name_bytes; | |
2982 | |
2983 /* fall through */ | |
2984 | |
2985 case sw_name_bytes: | |
2986 | |
2987 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
2988 "grpc name: len:%uz h:%d last:%uz, rest:%uz", | |
2989 ctx->field_length, | |
2990 ctx->field_huffman, | |
2991 last - p, | |
2992 ctx->rest - (p - b->pos)); | |
2993 | |
2994 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
2995 ctx->field_rest -= size; | |
2996 | |
2997 if (ctx->field_huffman) { | |
2998 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
2999 &ctx->field_end, | |
3000 ctx->field_rest == 0, | |
3001 r->connection->log) | |
3002 != NGX_OK) | |
3003 { | |
3004 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3005 "upstream sent invalid encoded header"); | |
3006 return NGX_ERROR; | |
3007 } | |
3008 | |
3009 ctx->name.len = ctx->field_end - ctx->name.data; | |
3010 ctx->name.data[ctx->name.len] = '\0'; | |
3011 | |
3012 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3013 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3014 ctx->name.data[ctx->name.len] = '\0'; |
3015 } | |
3016 | |
3017 p += size - 1; | |
3018 | |
3019 if (ctx->field_rest == 0) { | |
3020 state = sw_value_length; | |
3021 } | |
3022 | |
3023 break; | |
3024 | |
3025 case sw_value_length: | |
3026 ctx->field_huffman = ch & 0x80 ? 1 : 0; | |
3027 ctx->field_length = ch & ~0x80; | |
3028 | |
3029 if (ctx->field_length == 0x7f) { | |
3030 state = sw_value_length_2; | |
3031 break; | |
3032 } | |
3033 | |
3034 if (ctx->field_length == 0) { | |
3035 ngx_str_set(&ctx->value, ""); | |
3036 goto done; | |
3037 } | |
3038 | |
3039 state = sw_value; | |
3040 break; | |
3041 | |
3042 case sw_value_length_2: | |
3043 ctx->field_length += ch & ~0x80; | |
3044 | |
3045 if (ch & 0x80) { | |
3046 state = sw_value_length_3; | |
3047 break; | |
3048 } | |
3049 | |
3050 state = sw_value; | |
3051 break; | |
3052 | |
3053 case sw_value_length_3: | |
3054 ctx->field_length += (ch & ~0x80) << 7; | |
3055 | |
3056 if (ch & 0x80) { | |
3057 state = sw_value_length_4; | |
3058 break; | |
3059 } | |
3060 | |
3061 state = sw_value; | |
3062 break; | |
3063 | |
3064 case sw_value_length_4: | |
3065 ctx->field_length += (ch & ~0x80) << 14; | |
3066 | |
3067 if (ch & 0x80) { | |
3068 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3069 "upstream sent too large http2 " | |
3070 "header value length"); | |
3071 return NGX_ERROR; | |
3072 } | |
3073 | |
3074 state = sw_value; | |
3075 break; | |
3076 | |
3077 case sw_value: | |
3078 ctx->value.len = ctx->field_huffman ? | |
3079 ctx->field_length * 8 / 5 : ctx->field_length; | |
3080 | |
3081 ctx->value.data = ngx_pnalloc(r->pool, ctx->value.len + 1); | |
3082 if (ctx->value.data == NULL) { | |
3083 return NGX_ERROR; | |
3084 } | |
3085 | |
3086 ctx->field_end = ctx->value.data; | |
3087 ctx->field_rest = ctx->field_length; | |
3088 ctx->field_state = 0; | |
3089 | |
3090 state = sw_value_bytes; | |
3091 | |
3092 /* fall through */ | |
3093 | |
3094 case sw_value_bytes: | |
3095 | |
3096 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3097 "grpc value: len:%uz h:%d last:%uz, rest:%uz", | |
3098 ctx->field_length, | |
3099 ctx->field_huffman, | |
3100 last - p, | |
3101 ctx->rest - (p - b->pos)); | |
3102 | |
3103 size = ngx_min(last - p, (ssize_t) ctx->field_rest); | |
3104 ctx->field_rest -= size; | |
3105 | |
3106 if (ctx->field_huffman) { | |
3107 if (ngx_http_v2_huff_decode(&ctx->field_state, p, size, | |
3108 &ctx->field_end, | |
3109 ctx->field_rest == 0, | |
3110 r->connection->log) | |
3111 != NGX_OK) | |
3112 { | |
3113 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3114 "upstream sent invalid encoded header"); | |
3115 return NGX_ERROR; | |
3116 } | |
3117 | |
3118 ctx->value.len = ctx->field_end - ctx->value.data; | |
3119 ctx->value.data[ctx->value.len] = '\0'; | |
3120 | |
3121 } else { | |
7240
413189f03c8d
gRPC: fixed parsing response headers split on CONTINUATION frames.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7235
diff
changeset
|
3122 ctx->field_end = ngx_cpymem(ctx->field_end, p, size); |
7233 | 3123 ctx->value.data[ctx->value.len] = '\0'; |
3124 } | |
3125 | |
3126 p += size - 1; | |
3127 | |
3128 if (ctx->field_rest == 0) { | |
3129 goto done; | |
3130 } | |
3131 | |
3132 break; | |
3133 } | |
3134 | |
3135 continue; | |
3136 | |
3137 done: | |
3138 | |
3139 p++; | |
3140 ctx->rest -= p - b->pos; | |
3141 ctx->fragment_state = sw_start; | |
3142 b->pos = p; | |
3143 | |
3144 if (ctx->index) { | |
3145 ctx->name = *ngx_http_v2_get_static_name(ctx->index); | |
3146 } | |
3147 | |
3148 if (ctx->index && !ctx->literal) { | |
3149 ctx->value = *ngx_http_v2_get_static_value(ctx->index); | |
3150 } | |
3151 | |
3152 if (!ctx->index) { | |
3153 if (ngx_http_grpc_validate_header_name(r, &ctx->name) != NGX_OK) { | |
3154 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3155 "upstream sent invalid header: \"%V: %V\"", | |
3156 &ctx->name, &ctx->value); | |
3157 return NGX_ERROR; | |
3158 } | |
3159 } | |
3160 | |
3161 if (!ctx->index || ctx->literal) { | |
3162 if (ngx_http_grpc_validate_header_value(r, &ctx->value) != NGX_OK) { | |
3163 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3164 "upstream sent invalid header: \"%V: %V\"", | |
3165 &ctx->name, &ctx->value); | |
3166 return NGX_ERROR; | |
3167 } | |
3168 } | |
3169 | |
3170 return NGX_OK; | |
3171 } | |
3172 | |
3173 ctx->rest -= p - b->pos; | |
3174 ctx->fragment_state = state; | |
3175 b->pos = p; | |
3176 | |
3177 if (ctx->rest > ctx->padding) { | |
3178 return NGX_AGAIN; | |
3179 } | |
3180 | |
3181 return NGX_DONE; | |
3182 } | |
3183 | |
3184 | |
3185 static ngx_int_t | |
3186 ngx_http_grpc_validate_header_name(ngx_http_request_t *r, ngx_str_t *s) | |
3187 { | |
3188 u_char ch; | |
3189 ngx_uint_t i; | |
3190 | |
3191 for (i = 0; i < s->len; i++) { | |
3192 ch = s->data[i]; | |
3193 | |
3194 if (ch == ':' && i > 0) { | |
3195 return NGX_ERROR; | |
3196 } | |
3197 | |
3198 if (ch >= 'A' && ch <= 'Z') { | |
3199 return NGX_ERROR; | |
3200 } | |
3201 | |
3202 if (ch == '\0' || ch == CR || ch == LF) { | |
3203 return NGX_ERROR; | |
3204 } | |
3205 } | |
3206 | |
3207 return NGX_OK; | |
3208 } | |
3209 | |
3210 | |
3211 static ngx_int_t | |
3212 ngx_http_grpc_validate_header_value(ngx_http_request_t *r, ngx_str_t *s) | |
3213 { | |
3214 u_char ch; | |
3215 ngx_uint_t i; | |
3216 | |
3217 for (i = 0; i < s->len; i++) { | |
3218 ch = s->data[i]; | |
3219 | |
3220 if (ch == '\0' || ch == CR || ch == LF) { | |
3221 return NGX_ERROR; | |
3222 } | |
3223 } | |
3224 | |
3225 return NGX_OK; | |
3226 } | |
3227 | |
3228 | |
3229 static ngx_int_t | |
3230 ngx_http_grpc_parse_rst_stream(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3231 ngx_buf_t *b) | |
3232 { | |
3233 u_char ch, *p, *last; | |
3234 enum { | |
3235 sw_start = 0, | |
3236 sw_error_2, | |
3237 sw_error_3, | |
3238 sw_error_4 | |
3239 } state; | |
3240 | |
3241 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3242 last = b->last; | |
3243 | |
3244 } else { | |
3245 last = b->pos + ctx->rest; | |
3246 } | |
3247 | |
3248 state = ctx->frame_state; | |
3249 | |
3250 if (state == sw_start) { | |
3251 if (ctx->rest != 4) { | |
3252 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3253 "upstream sent rst stream frame " | |
3254 "with invalid length: %uz", | |
3255 ctx->rest); | |
3256 return NGX_ERROR; | |
3257 } | |
3258 } | |
3259 | |
3260 for (p = b->pos; p < last; p++) { | |
3261 ch = *p; | |
3262 | |
3263 #if 0 | |
3264 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3265 "grpc rst byte: %02Xd s:%d", ch, state); | |
3266 #endif | |
3267 | |
3268 switch (state) { | |
3269 | |
3270 case sw_start: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3271 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3272 state = sw_error_2; |
3273 break; | |
3274 | |
3275 case sw_error_2: | |
3276 ctx->error |= ch << 16; | |
3277 state = sw_error_3; | |
3278 break; | |
3279 | |
3280 case sw_error_3: | |
3281 ctx->error |= ch << 8; | |
3282 state = sw_error_4; | |
3283 break; | |
3284 | |
3285 case sw_error_4: | |
3286 ctx->error |= ch; | |
3287 state = sw_start; | |
3288 | |
3289 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3290 "grpc error: %ui", ctx->error); | |
3291 | |
3292 break; | |
3293 } | |
3294 } | |
3295 | |
3296 ctx->rest -= p - b->pos; | |
3297 ctx->frame_state = state; | |
3298 b->pos = p; | |
3299 | |
3300 if (ctx->rest > 0) { | |
3301 return NGX_AGAIN; | |
3302 } | |
3303 | |
3304 return NGX_OK; | |
3305 } | |
3306 | |
3307 | |
3308 static ngx_int_t | |
3309 ngx_http_grpc_parse_goaway(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3310 ngx_buf_t *b) | |
3311 { | |
3312 u_char ch, *p, *last; | |
3313 enum { | |
3314 sw_start = 0, | |
3315 sw_last_stream_id_2, | |
3316 sw_last_stream_id_3, | |
3317 sw_last_stream_id_4, | |
3318 sw_error, | |
3319 sw_error_2, | |
3320 sw_error_3, | |
3321 sw_error_4, | |
3322 sw_debug | |
3323 } state; | |
3324 | |
3325 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3326 last = b->last; | |
3327 | |
3328 } else { | |
3329 last = b->pos + ctx->rest; | |
3330 } | |
3331 | |
3332 state = ctx->frame_state; | |
3333 | |
3334 if (state == sw_start) { | |
3335 | |
3336 if (ctx->stream_id) { | |
3337 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3338 "upstream sent goaway frame " | |
3339 "with non-zero stream id: %ui", | |
3340 ctx->stream_id); | |
3341 return NGX_ERROR; | |
3342 } | |
3343 | |
3344 if (ctx->rest < 8) { | |
3345 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3346 "upstream sent goaway frame " | |
3347 "with invalid length: %uz", | |
3348 ctx->rest); | |
3349 return NGX_ERROR; | |
3350 } | |
3351 } | |
3352 | |
3353 for (p = b->pos; p < last; p++) { | |
3354 ch = *p; | |
3355 | |
3356 #if 0 | |
3357 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3358 "grpc goaway byte: %02Xd s:%d", ch, state); | |
3359 #endif | |
3360 | |
3361 switch (state) { | |
3362 | |
3363 case sw_start: | |
3364 ctx->stream_id = (ch & 0x7f) << 24; | |
3365 state = sw_last_stream_id_2; | |
3366 break; | |
3367 | |
3368 case sw_last_stream_id_2: | |
3369 ctx->stream_id |= ch << 16; | |
3370 state = sw_last_stream_id_3; | |
3371 break; | |
3372 | |
3373 case sw_last_stream_id_3: | |
3374 ctx->stream_id |= ch << 8; | |
3375 state = sw_last_stream_id_4; | |
3376 break; | |
3377 | |
3378 case sw_last_stream_id_4: | |
3379 ctx->stream_id |= ch; | |
3380 state = sw_error; | |
3381 break; | |
3382 | |
3383 case sw_error: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3384 ctx->error = (ngx_uint_t) ch << 24; |
7233 | 3385 state = sw_error_2; |
3386 break; | |
3387 | |
3388 case sw_error_2: | |
3389 ctx->error |= ch << 16; | |
3390 state = sw_error_3; | |
3391 break; | |
3392 | |
3393 case sw_error_3: | |
3394 ctx->error |= ch << 8; | |
3395 state = sw_error_4; | |
3396 break; | |
3397 | |
3398 case sw_error_4: | |
3399 ctx->error |= ch; | |
3400 state = sw_debug; | |
3401 break; | |
3402 | |
3403 case sw_debug: | |
3404 break; | |
3405 } | |
3406 } | |
3407 | |
3408 ctx->rest -= p - b->pos; | |
3409 ctx->frame_state = state; | |
3410 b->pos = p; | |
3411 | |
3412 if (ctx->rest > 0) { | |
3413 return NGX_AGAIN; | |
3414 } | |
3415 | |
3416 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3417 "grpc goaway: %ui, stream %ui", | |
3418 ctx->error, ctx->stream_id); | |
3419 | |
3420 ctx->state = ngx_http_grpc_st_start; | |
3421 | |
3422 return NGX_OK; | |
3423 } | |
3424 | |
3425 | |
3426 static ngx_int_t | |
3427 ngx_http_grpc_parse_window_update(ngx_http_request_t *r, | |
3428 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3429 { | |
3430 u_char ch, *p, *last; | |
3431 enum { | |
3432 sw_start = 0, | |
3433 sw_size_2, | |
3434 sw_size_3, | |
3435 sw_size_4 | |
3436 } state; | |
3437 | |
3438 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3439 last = b->last; | |
3440 | |
3441 } else { | |
3442 last = b->pos + ctx->rest; | |
3443 } | |
3444 | |
3445 state = ctx->frame_state; | |
3446 | |
3447 if (state == sw_start) { | |
3448 if (ctx->rest != 4) { | |
3449 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3450 "upstream sent window update frame " | |
3451 "with invalid length: %uz", | |
3452 ctx->rest); | |
3453 return NGX_ERROR; | |
3454 } | |
3455 } | |
3456 | |
3457 for (p = b->pos; p < last; p++) { | |
3458 ch = *p; | |
3459 | |
3460 #if 0 | |
3461 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3462 "grpc window update byte: %02Xd s:%d", ch, state); | |
3463 #endif | |
3464 | |
3465 switch (state) { | |
3466 | |
3467 case sw_start: | |
3468 ctx->window_update = (ch & 0x7f) << 24; | |
3469 state = sw_size_2; | |
3470 break; | |
3471 | |
3472 case sw_size_2: | |
3473 ctx->window_update |= ch << 16; | |
3474 state = sw_size_3; | |
3475 break; | |
3476 | |
3477 case sw_size_3: | |
3478 ctx->window_update |= ch << 8; | |
3479 state = sw_size_4; | |
3480 break; | |
3481 | |
3482 case sw_size_4: | |
3483 ctx->window_update |= ch; | |
3484 state = sw_start; | |
3485 break; | |
3486 } | |
3487 } | |
3488 | |
3489 ctx->rest -= p - b->pos; | |
3490 ctx->frame_state = state; | |
3491 b->pos = p; | |
3492 | |
3493 if (ctx->rest > 0) { | |
3494 return NGX_AGAIN; | |
3495 } | |
3496 | |
3497 ctx->state = ngx_http_grpc_st_start; | |
3498 | |
3499 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3500 "grpc window update: %ui", ctx->window_update); | |
3501 | |
3502 if (ctx->stream_id) { | |
3503 | |
3504 if (ctx->window_update > (size_t) NGX_HTTP_V2_MAX_WINDOW | |
3505 - ctx->send_window) | |
3506 { | |
3507 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3508 "upstream sent too large window update"); | |
3509 return NGX_ERROR; | |
3510 } | |
3511 | |
3512 ctx->send_window += ctx->window_update; | |
3513 | |
3514 } else { | |
3515 | |
3516 if (ctx->window_update > NGX_HTTP_V2_MAX_WINDOW | |
3517 - ctx->connection->send_window) | |
3518 { | |
3519 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3520 "upstream sent too large window update"); | |
3521 return NGX_ERROR; | |
3522 } | |
3523 | |
3524 ctx->connection->send_window += ctx->window_update; | |
3525 } | |
3526 | |
3527 return NGX_OK; | |
3528 } | |
3529 | |
3530 | |
3531 static ngx_int_t | |
3532 ngx_http_grpc_parse_settings(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx, | |
3533 ngx_buf_t *b) | |
3534 { | |
3535 u_char ch, *p, *last; | |
3536 ssize_t window_update; | |
3537 enum { | |
3538 sw_start = 0, | |
3539 sw_id, | |
3540 sw_id_2, | |
3541 sw_value, | |
3542 sw_value_2, | |
3543 sw_value_3, | |
3544 sw_value_4 | |
3545 } state; | |
3546 | |
3547 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3548 last = b->last; | |
3549 | |
3550 } else { | |
3551 last = b->pos + ctx->rest; | |
3552 } | |
3553 | |
3554 state = ctx->frame_state; | |
3555 | |
3556 if (state == sw_start) { | |
3557 | |
3558 if (ctx->stream_id) { | |
3559 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3560 "upstream sent settings frame " | |
3561 "with non-zero stream id: %ui", | |
3562 ctx->stream_id); | |
3563 return NGX_ERROR; | |
3564 } | |
3565 | |
3566 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3567 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3568 "grpc settings ack"); | |
3569 | |
3570 if (ctx->rest != 0) { | |
3571 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3572 "upstream sent settings frame " | |
3573 "with ack flag and non-zero length: %uz", | |
3574 ctx->rest); | |
3575 return NGX_ERROR; | |
3576 } | |
3577 | |
3578 ctx->state = ngx_http_grpc_st_start; | |
3579 | |
3580 return NGX_OK; | |
3581 } | |
3582 | |
3583 if (ctx->rest % 6 != 0) { | |
3584 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3585 "upstream sent settings frame " | |
3586 "with invalid length: %uz", | |
3587 ctx->rest); | |
3588 return NGX_ERROR; | |
3589 } | |
7379
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3590 |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3591 if (ctx->free == NULL && ctx->settings++ > 1000) { |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3592 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3593 "upstream sent too many settings frames"); |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3594 return NGX_ERROR; |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3595 } |
7233 | 3596 } |
3597 | |
3598 for (p = b->pos; p < last; p++) { | |
3599 ch = *p; | |
3600 | |
3601 #if 0 | |
3602 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3603 "grpc settings byte: %02Xd s:%d", ch, state); | |
3604 #endif | |
3605 | |
3606 switch (state) { | |
3607 | |
3608 case sw_start: | |
3609 case sw_id: | |
3610 ctx->setting_id = ch << 8; | |
3611 state = sw_id_2; | |
3612 break; | |
3613 | |
3614 case sw_id_2: | |
3615 ctx->setting_id |= ch; | |
3616 state = sw_value; | |
3617 break; | |
3618 | |
3619 case sw_value: | |
7249
070c972336c4
gRPC: fixed possible sign extension of error and setting_value.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7242
diff
changeset
|
3620 ctx->setting_value = (ngx_uint_t) ch << 24; |
7233 | 3621 state = sw_value_2; |
3622 break; | |
3623 | |
3624 case sw_value_2: | |
3625 ctx->setting_value |= ch << 16; | |
3626 state = sw_value_3; | |
3627 break; | |
3628 | |
3629 case sw_value_3: | |
3630 ctx->setting_value |= ch << 8; | |
3631 state = sw_value_4; | |
3632 break; | |
3633 | |
3634 case sw_value_4: | |
3635 ctx->setting_value |= ch; | |
3636 state = sw_id; | |
3637 | |
3638 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3639 "grpc setting: %ui %ui", | |
3640 ctx->setting_id, ctx->setting_value); | |
3641 | |
3642 /* | |
3643 * The following settings are defined by the protocol: | |
3644 * | |
3645 * SETTINGS_HEADER_TABLE_SIZE, SETTINGS_ENABLE_PUSH, | |
3646 * SETTINGS_MAX_CONCURRENT_STREAMS, SETTINGS_INITIAL_WINDOW_SIZE, | |
3647 * SETTINGS_MAX_FRAME_SIZE, SETTINGS_MAX_HEADER_LIST_SIZE | |
3648 * | |
3649 * Only SETTINGS_INITIAL_WINDOW_SIZE seems to be needed in | |
3650 * a simple client. | |
3651 */ | |
3652 | |
3653 if (ctx->setting_id == 0x04) { | |
3654 /* SETTINGS_INITIAL_WINDOW_SIZE */ | |
3655 | |
3656 if (ctx->setting_value > NGX_HTTP_V2_MAX_WINDOW) { | |
3657 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3658 "upstream sent settings frame " | |
3659 "with too large initial window size: %ui", | |
3660 ctx->setting_value); | |
3661 return NGX_ERROR; | |
3662 } | |
3663 | |
3664 window_update = ctx->setting_value | |
3665 - ctx->connection->init_window; | |
3666 ctx->connection->init_window = ctx->setting_value; | |
3667 | |
3668 if (ctx->send_window > 0 | |
3669 && window_update > (ssize_t) NGX_HTTP_V2_MAX_WINDOW | |
3670 - ctx->send_window) | |
3671 { | |
3672 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3673 "upstream sent settings frame " | |
3674 "with too large initial window size: %ui", | |
3675 ctx->setting_value); | |
3676 return NGX_ERROR; | |
3677 } | |
3678 | |
3679 ctx->send_window += window_update; | |
3680 } | |
3681 | |
3682 break; | |
3683 } | |
3684 } | |
3685 | |
3686 ctx->rest -= p - b->pos; | |
3687 ctx->frame_state = state; | |
3688 b->pos = p; | |
3689 | |
3690 if (ctx->rest > 0) { | |
3691 return NGX_AGAIN; | |
3692 } | |
3693 | |
3694 ctx->state = ngx_http_grpc_st_start; | |
3695 | |
3696 return ngx_http_grpc_send_settings_ack(r, ctx); | |
3697 } | |
3698 | |
3699 | |
3700 static ngx_int_t | |
3701 ngx_http_grpc_parse_ping(ngx_http_request_t *r, | |
3702 ngx_http_grpc_ctx_t *ctx, ngx_buf_t *b) | |
3703 { | |
3704 u_char ch, *p, *last; | |
3705 enum { | |
3706 sw_start = 0, | |
3707 sw_data_2, | |
3708 sw_data_3, | |
3709 sw_data_4, | |
3710 sw_data_5, | |
3711 sw_data_6, | |
3712 sw_data_7, | |
3713 sw_data_8 | |
3714 } state; | |
3715 | |
3716 if (b->last - b->pos < (ssize_t) ctx->rest) { | |
3717 last = b->last; | |
3718 | |
3719 } else { | |
3720 last = b->pos + ctx->rest; | |
3721 } | |
3722 | |
3723 state = ctx->frame_state; | |
3724 | |
3725 if (state == sw_start) { | |
3726 | |
3727 if (ctx->stream_id) { | |
3728 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3729 "upstream sent ping frame " | |
3730 "with non-zero stream id: %ui", | |
3731 ctx->stream_id); | |
3732 return NGX_ERROR; | |
3733 } | |
3734 | |
3735 if (ctx->rest != 8) { | |
3736 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3737 "upstream sent ping frame " | |
3738 "with invalid length: %uz", | |
3739 ctx->rest); | |
3740 return NGX_ERROR; | |
3741 } | |
3742 | |
3743 if (ctx->flags & NGX_HTTP_V2_ACK_FLAG) { | |
3744 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, | |
3745 "upstream sent ping frame with ack flag"); | |
3746 return NGX_ERROR; | |
3747 } | |
7379
57463f4e2fcd
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3748 |
57463f4e2fcd
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7371
diff
changeset
|
3749 if (ctx->free == NULL && ctx->pings++ > 1000) { |
57463f4e2fcd
gRPC: limited allocations due to ping and settings frames.
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parents:
7371
diff
changeset
|
3750 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
57463f4e2fcd
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Maxim Dounin <mdounin@mdounin.ru>
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7371
diff
changeset
|
3751 "upstream sent too many ping frames"); |
57463f4e2fcd
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7371
diff
changeset
|
3752 return NGX_ERROR; |
57463f4e2fcd
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diff
changeset
|
3753 } |
7233 | 3754 } |
3755 | |
3756 for (p = b->pos; p < last; p++) { | |
3757 ch = *p; | |
3758 | |
3759 #if 0 | |
3760 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3761 "grpc ping byte: %02Xd s:%d", ch, state); | |
3762 #endif | |
3763 | |
3764 if (state < sw_data_8) { | |
3765 ctx->ping_data[state] = ch; | |
3766 state++; | |
3767 | |
3768 } else { | |
3769 ctx->ping_data[7] = ch; | |
3770 state = sw_start; | |
3771 | |
3772 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3773 "grpc ping"); | |
3774 } | |
3775 } | |
3776 | |
3777 ctx->rest -= p - b->pos; | |
3778 ctx->frame_state = state; | |
3779 b->pos = p; | |
3780 | |
3781 if (ctx->rest > 0) { | |
3782 return NGX_AGAIN; | |
3783 } | |
3784 | |
3785 ctx->state = ngx_http_grpc_st_start; | |
3786 | |
3787 return ngx_http_grpc_send_ping_ack(r, ctx); | |
3788 } | |
3789 | |
3790 | |
3791 static ngx_int_t | |
3792 ngx_http_grpc_send_settings_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3793 { | |
3794 ngx_chain_t *cl, **ll; | |
3795 ngx_http_grpc_frame_t *f; | |
3796 | |
3797 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3798 "grpc send settings ack"); | |
3799 | |
3800 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3801 ll = &cl->next; | |
3802 } | |
3803 | |
3804 cl = ngx_http_grpc_get_buf(r, ctx); | |
3805 if (cl == NULL) { | |
3806 return NGX_ERROR; | |
3807 } | |
3808 | |
3809 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3810 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3811 | |
3812 f->length_0 = 0; | |
3813 f->length_1 = 0; | |
3814 f->length_2 = 0; | |
3815 f->type = NGX_HTTP_V2_SETTINGS_FRAME; | |
3816 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3817 f->stream_id_0 = 0; | |
3818 f->stream_id_1 = 0; | |
3819 f->stream_id_2 = 0; | |
3820 f->stream_id_3 = 0; | |
3821 | |
3822 *ll = cl; | |
3823 | |
3824 return NGX_OK; | |
3825 } | |
3826 | |
3827 | |
3828 static ngx_int_t | |
3829 ngx_http_grpc_send_ping_ack(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3830 { | |
3831 ngx_chain_t *cl, **ll; | |
3832 ngx_http_grpc_frame_t *f; | |
3833 | |
3834 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3835 "grpc send ping ack"); | |
3836 | |
3837 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3838 ll = &cl->next; | |
3839 } | |
3840 | |
3841 cl = ngx_http_grpc_get_buf(r, ctx); | |
3842 if (cl == NULL) { | |
3843 return NGX_ERROR; | |
3844 } | |
3845 | |
3846 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3847 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3848 | |
3849 f->length_0 = 0; | |
3850 f->length_1 = 0; | |
3851 f->length_2 = 8; | |
3852 f->type = NGX_HTTP_V2_PING_FRAME; | |
3853 f->flags = NGX_HTTP_V2_ACK_FLAG; | |
3854 f->stream_id_0 = 0; | |
3855 f->stream_id_1 = 0; | |
3856 f->stream_id_2 = 0; | |
3857 f->stream_id_3 = 0; | |
3858 | |
3859 cl->buf->last = ngx_copy(cl->buf->last, ctx->ping_data, 8); | |
3860 | |
3861 *ll = cl; | |
3862 | |
3863 return NGX_OK; | |
3864 } | |
3865 | |
3866 | |
3867 static ngx_int_t | |
3868 ngx_http_grpc_send_window_update(ngx_http_request_t *r, | |
3869 ngx_http_grpc_ctx_t *ctx) | |
3870 { | |
3871 size_t n; | |
3872 ngx_chain_t *cl, **ll; | |
3873 ngx_http_grpc_frame_t *f; | |
3874 | |
3875 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
3876 "grpc send window update: %uz %uz", | |
3877 ctx->connection->recv_window, ctx->recv_window); | |
3878 | |
3879 for (cl = ctx->out, ll = &ctx->out; cl; cl = cl->next) { | |
3880 ll = &cl->next; | |
3881 } | |
3882 | |
3883 cl = ngx_http_grpc_get_buf(r, ctx); | |
3884 if (cl == NULL) { | |
3885 return NGX_ERROR; | |
3886 } | |
3887 | |
3888 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3889 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3890 | |
3891 f->length_0 = 0; | |
3892 f->length_1 = 0; | |
3893 f->length_2 = 4; | |
3894 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3895 f->flags = 0; | |
3896 f->stream_id_0 = 0; | |
3897 f->stream_id_1 = 0; | |
3898 f->stream_id_2 = 0; | |
3899 f->stream_id_3 = 0; | |
3900 | |
3901 n = NGX_HTTP_V2_MAX_WINDOW - ctx->connection->recv_window; | |
3902 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3903 | |
3904 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3905 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3906 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3907 *cl->buf->last++ = (u_char) (n & 0xff); | |
3908 | |
3909 f = (ngx_http_grpc_frame_t *) cl->buf->last; | |
3910 cl->buf->last += sizeof(ngx_http_grpc_frame_t); | |
3911 | |
3912 f->length_0 = 0; | |
3913 f->length_1 = 0; | |
3914 f->length_2 = 4; | |
3915 f->type = NGX_HTTP_V2_WINDOW_UPDATE_FRAME; | |
3916 f->flags = 0; | |
3917 f->stream_id_0 = (u_char) ((ctx->id >> 24) & 0xff); | |
3918 f->stream_id_1 = (u_char) ((ctx->id >> 16) & 0xff); | |
3919 f->stream_id_2 = (u_char) ((ctx->id >> 8) & 0xff); | |
3920 f->stream_id_3 = (u_char) (ctx->id & 0xff); | |
3921 | |
3922 n = NGX_HTTP_V2_MAX_WINDOW - ctx->recv_window; | |
3923 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
3924 | |
3925 *cl->buf->last++ = (u_char) ((n >> 24) & 0xff); | |
3926 *cl->buf->last++ = (u_char) ((n >> 16) & 0xff); | |
3927 *cl->buf->last++ = (u_char) ((n >> 8) & 0xff); | |
3928 *cl->buf->last++ = (u_char) (n & 0xff); | |
3929 | |
3930 *ll = cl; | |
3931 | |
3932 return NGX_OK; | |
3933 } | |
3934 | |
3935 | |
3936 static ngx_chain_t * | |
3937 ngx_http_grpc_get_buf(ngx_http_request_t *r, ngx_http_grpc_ctx_t *ctx) | |
3938 { | |
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7271
diff
changeset
|
3939 u_char *start; |
7233 | 3940 ngx_buf_t *b; |
3941 ngx_chain_t *cl; | |
3942 | |
3943 cl = ngx_chain_get_free_buf(r->pool, &ctx->free); | |
3944 if (cl == NULL) { | |
3945 return NULL; | |
3946 } | |
3947 | |
3948 b = cl->buf; | |
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7271
diff
changeset
|
3949 start = b->start; |
6cfd45d4c754
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7271
diff
changeset
|
3950 |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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diff
changeset
|
3951 if (start == NULL) { |
7233 | 3952 |
3953 /* | |
3954 * each buffer is large enough to hold two window update | |
3955 * frames in a row | |
3956 */ | |
3957 | |
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7271
diff
changeset
|
3958 start = ngx_palloc(r->pool, 2 * sizeof(ngx_http_grpc_frame_t) + 8); |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3959 if (start == NULL) { |
7233 | 3960 return NULL; |
3961 } | |
3962 | |
3963 } | |
3964 | |
7305
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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parents:
7271
diff
changeset
|
3965 ngx_memzero(b, sizeof(ngx_buf_t)); |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3966 |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3967 b->start = start; |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3968 b->pos = start; |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3969 b->last = start; |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3970 b->end = start + 2 * sizeof(ngx_http_grpc_frame_t) + 8; |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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7271
diff
changeset
|
3971 |
6cfd45d4c754
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diff
changeset
|
3972 b->tag = (ngx_buf_tag_t) &ngx_http_grpc_body_output_filter; |
6cfd45d4c754
gRPC: clearing buffers in ngx_http_grpc_get_buf().
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diff
changeset
|
3973 b->temporary = 1; |
6cfd45d4c754
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diff
changeset
|
3974 b->flush = 1; |
6cfd45d4c754
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diff
changeset
|
3975 |
7233 | 3976 return cl; |
3977 } | |
3978 | |
3979 | |
3980 static ngx_http_grpc_ctx_t * | |
3981 ngx_http_grpc_get_ctx(ngx_http_request_t *r) | |
3982 { | |
3983 ngx_http_grpc_ctx_t *ctx; | |
3984 ngx_http_upstream_t *u; | |
3985 | |
3986 ctx = ngx_http_get_module_ctx(r, ngx_http_grpc_module); | |
3987 | |
3988 if (ctx->connection == NULL) { | |
3989 u = r->upstream; | |
3990 | |
3991 if (ngx_http_grpc_get_connection_data(r, ctx, &u->peer) != NGX_OK) { | |
3992 return NULL; | |
3993 } | |
3994 } | |
3995 | |
3996 return ctx; | |
3997 } | |
3998 | |
3999 | |
4000 static ngx_int_t | |
4001 ngx_http_grpc_get_connection_data(ngx_http_request_t *r, | |
4002 ngx_http_grpc_ctx_t *ctx, ngx_peer_connection_t *pc) | |
4003 { | |
4004 ngx_connection_t *c; | |
4005 ngx_pool_cleanup_t *cln; | |
4006 | |
4007 c = pc->connection; | |
4008 | |
4009 if (pc->cached) { | |
4010 | |
4011 /* | |
4012 * for cached connections, connection data can be found | |
4013 * in the cleanup handler | |
4014 */ | |
4015 | |
4016 for (cln = c->pool->cleanup; cln; cln = cln->next) { | |
4017 if (cln->handler == ngx_http_grpc_cleanup) { | |
4018 ctx->connection = cln->data; | |
4019 break; | |
4020 } | |
4021 } | |
4022 | |
4023 if (ctx->connection == NULL) { | |
4024 ngx_log_error(NGX_LOG_ERR, c->log, 0, | |
4025 "no connection data found for " | |
4026 "keepalive http2 connection"); | |
4027 return NGX_ERROR; | |
4028 } | |
4029 | |
4030 ctx->send_window = ctx->connection->init_window; | |
4031 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4032 | |
4033 ctx->connection->last_stream_id += 2; | |
4034 ctx->id = ctx->connection->last_stream_id; | |
4035 | |
4036 return NGX_OK; | |
4037 } | |
4038 | |
4039 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_grpc_conn_t)); | |
4040 if (cln == NULL) { | |
4041 return NGX_ERROR; | |
4042 } | |
4043 | |
4044 cln->handler = ngx_http_grpc_cleanup; | |
4045 ctx->connection = cln->data; | |
4046 | |
4047 ctx->connection->init_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4048 ctx->connection->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4049 ctx->connection->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4050 | |
4051 ctx->send_window = NGX_HTTP_V2_DEFAULT_WINDOW; | |
4052 ctx->recv_window = NGX_HTTP_V2_MAX_WINDOW; | |
4053 | |
4054 ctx->id = 1; | |
4055 ctx->connection->last_stream_id = 1; | |
4056 | |
4057 return NGX_OK; | |
4058 } | |
4059 | |
4060 | |
4061 static void | |
4062 ngx_http_grpc_cleanup(void *data) | |
4063 { | |
4064 #if 0 | |
4065 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
4066 "grpc cleanup"); | |
4067 #endif | |
4068 return; | |
4069 } | |
4070 | |
4071 | |
4072 static void | |
4073 ngx_http_grpc_abort_request(ngx_http_request_t *r) | |
4074 { | |
4075 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4076 "abort grpc request"); | |
4077 return; | |
4078 } | |
4079 | |
4080 | |
4081 static void | |
4082 ngx_http_grpc_finalize_request(ngx_http_request_t *r, ngx_int_t rc) | |
4083 { | |
4084 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, | |
4085 "finalize grpc request"); | |
4086 return; | |
4087 } | |
4088 | |
4089 | |
7234
c693daca57f7
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7233
diff
changeset
|
4090 static ngx_int_t |
c693daca57f7
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parents:
7233
diff
changeset
|
4091 ngx_http_grpc_internal_trailers_variable(ngx_http_request_t *r, |
c693daca57f7
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Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4092 ngx_http_variable_value_t *v, uintptr_t data) |
c693daca57f7
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7233
diff
changeset
|
4093 { |
c693daca57f7
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7233
diff
changeset
|
4094 ngx_table_elt_t *te; |
c693daca57f7
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parents:
7233
diff
changeset
|
4095 |
c693daca57f7
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parents:
7233
diff
changeset
|
4096 te = r->headers_in.te; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4097 |
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gRPC: special handling of the TE request header.
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parents:
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diff
changeset
|
4098 if (te == NULL) { |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4099 v->not_found = 1; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4100 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4101 } |
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.
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parents:
7233
diff
changeset
|
4103 if (ngx_strlcasestrn(te->value.data, te->value.data + te->value.len, |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4104 (u_char *) "trailers", 8 - 1) |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4105 == NULL) |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4106 { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4107 v->not_found = 1; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
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|
4108 return NGX_OK; |
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.
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parents:
7233
diff
changeset
|
4111 v->valid = 1; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4112 v->no_cacheable = 0; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4113 v->not_found = 0; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4114 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4115 v->data = (u_char *) "trailers"; |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4116 v->len = sizeof("trailers") - 1; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
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|
4117 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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|
4118 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4119 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4120 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4121 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4122 static ngx_int_t |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4123 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
|
4124 { |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4125 ngx_http_variable_t *var, *v; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
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|
4126 |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4127 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
|
4128 var = ngx_http_add_variable(cf, &v->name, v->flags); |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
changeset
|
4129 if (var == NULL) { |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
diff
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|
4130 return NGX_ERROR; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4131 } |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
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changeset
|
4132 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
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changeset
|
4133 var->get_handler = v->get_handler; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4134 var->data = v->data; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4135 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4136 |
c693daca57f7
gRPC: special handling of the TE request header.
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parents:
7233
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changeset
|
4137 return NGX_OK; |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7233
diff
changeset
|
4138 } |
c693daca57f7
gRPC: special handling of the TE request header.
Maxim Dounin <mdounin@mdounin.ru>
parents:
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diff
changeset
|
4139 |
c693daca57f7
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changeset
|
4140 |
7233 | 4141 static void * |
4142 ngx_http_grpc_create_loc_conf(ngx_conf_t *cf) | |
4143 { | |
4144 ngx_http_grpc_loc_conf_t *conf; | |
4145 | |
4146 conf = ngx_pcalloc(cf->pool, sizeof(ngx_http_grpc_loc_conf_t)); | |
4147 if (conf == NULL) { | |
4148 return NULL; | |
4149 } | |
4150 | |
4151 /* | |
4152 * set by ngx_pcalloc(): | |
4153 * | |
4154 * conf->upstream.ignore_headers = 0; | |
4155 * conf->upstream.next_upstream = 0; | |
4156 * conf->upstream.hide_headers_hash = { NULL, 0 }; | |
4157 * conf->upstream.ssl_name = NULL; | |
4158 * | |
4159 * conf->headers_source = NULL; | |
4160 * conf->headers.lengths = NULL; | |
4161 * conf->headers.values = NULL; | |
4162 * conf->headers.hash = { NULL, 0 }; | |
4163 * conf->host = { 0, NULL }; | |
4164 * conf->host_set = 0; | |
4165 * conf->ssl = 0; | |
4166 * conf->ssl_protocols = 0; | |
4167 * conf->ssl_ciphers = { 0, NULL }; | |
4168 * conf->ssl_trusted_certificate = { 0, NULL }; | |
4169 * conf->ssl_crl = { 0, NULL }; | |
4170 * conf->ssl_certificate = { 0, NULL }; | |
4171 * conf->ssl_certificate_key = { 0, NULL }; | |
4172 */ | |
4173 | |
4174 conf->upstream.local = NGX_CONF_UNSET_PTR; | |
7371
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4175 conf->upstream.socket_keepalive = NGX_CONF_UNSET; |
7233 | 4176 conf->upstream.next_upstream_tries = NGX_CONF_UNSET_UINT; |
4177 conf->upstream.connect_timeout = NGX_CONF_UNSET_MSEC; | |
4178 conf->upstream.send_timeout = NGX_CONF_UNSET_MSEC; | |
4179 conf->upstream.read_timeout = NGX_CONF_UNSET_MSEC; | |
4180 conf->upstream.next_upstream_timeout = NGX_CONF_UNSET_MSEC; | |
4181 | |
4182 conf->upstream.buffer_size = NGX_CONF_UNSET_SIZE; | |
4183 | |
4184 conf->upstream.hide_headers = NGX_CONF_UNSET_PTR; | |
4185 conf->upstream.pass_headers = NGX_CONF_UNSET_PTR; | |
4186 | |
4187 conf->upstream.intercept_errors = NGX_CONF_UNSET; | |
4188 | |
4189 #if (NGX_HTTP_SSL) | |
4190 conf->upstream.ssl_session_reuse = NGX_CONF_UNSET; | |
4191 conf->upstream.ssl_server_name = NGX_CONF_UNSET; | |
4192 conf->upstream.ssl_verify = NGX_CONF_UNSET; | |
4193 conf->ssl_verify_depth = NGX_CONF_UNSET_UINT; | |
4194 conf->ssl_passwords = NGX_CONF_UNSET_PTR; | |
4195 #endif | |
4196 | |
4197 /* the hardcoded values */ | |
4198 conf->upstream.cyclic_temp_file = 0; | |
4199 conf->upstream.buffering = 0; | |
4200 conf->upstream.ignore_client_abort = 0; | |
4201 conf->upstream.send_lowat = 0; | |
4202 conf->upstream.bufs.num = 0; | |
4203 conf->upstream.busy_buffers_size = 0; | |
4204 conf->upstream.max_temp_file_size = 0; | |
4205 conf->upstream.temp_file_write_size = 0; | |
4206 conf->upstream.pass_request_headers = 1; | |
4207 conf->upstream.pass_request_body = 1; | |
4208 conf->upstream.force_ranges = 0; | |
4209 conf->upstream.pass_trailers = 1; | |
4210 conf->upstream.preserve_output = 1; | |
4211 | |
4212 ngx_str_set(&conf->upstream.module, "grpc"); | |
4213 | |
4214 return conf; | |
4215 } | |
4216 | |
4217 | |
4218 static char * | |
4219 ngx_http_grpc_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child) | |
4220 { | |
4221 ngx_http_grpc_loc_conf_t *prev = parent; | |
4222 ngx_http_grpc_loc_conf_t *conf = child; | |
4223 | |
4224 ngx_int_t rc; | |
4225 ngx_hash_init_t hash; | |
4226 ngx_http_core_loc_conf_t *clcf; | |
4227 | |
4228 ngx_conf_merge_ptr_value(conf->upstream.local, | |
4229 prev->upstream.local, NULL); | |
4230 | |
7371
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4231 ngx_conf_merge_value(conf->upstream.socket_keepalive, |
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4232 prev->upstream.socket_keepalive, 0); |
8b68d50090e4
Upstream: proxy_socket_keepalive and friends.
Vladimir Homutov <vl@nginx.com>
parents:
7350
diff
changeset
|
4233 |
7233 | 4234 ngx_conf_merge_uint_value(conf->upstream.next_upstream_tries, |
4235 prev->upstream.next_upstream_tries, 0); | |
4236 | |
4237 ngx_conf_merge_msec_value(conf->upstream.connect_timeout, | |
4238 prev->upstream.connect_timeout, 60000); | |
4239 | |
4240 ngx_conf_merge_msec_value(conf->upstream.send_timeout, | |
4241 prev->upstream.send_timeout, 60000); | |
4242 | |
4243 ngx_conf_merge_msec_value(conf->upstream.read_timeout, | |
4244 prev->upstream.read_timeout, 60000); | |
4245 | |
4246 ngx_conf_merge_msec_value(conf->upstream.next_upstream_timeout, | |
4247 prev->upstream.next_upstream_timeout, 0); | |
4248 | |
4249 ngx_conf_merge_size_value(conf->upstream.buffer_size, | |
4250 prev->upstream.buffer_size, | |
4251 (size_t) ngx_pagesize); | |
4252 | |
4253 ngx_conf_merge_bitmask_value(conf->upstream.ignore_headers, | |
4254 prev->upstream.ignore_headers, | |
4255 NGX_CONF_BITMASK_SET); | |
4256 | |
4257 ngx_conf_merge_bitmask_value(conf->upstream.next_upstream, | |
4258 prev->upstream.next_upstream, | |
4259 (NGX_CONF_BITMASK_SET | |
4260 |NGX_HTTP_UPSTREAM_FT_ERROR | |
4261 |NGX_HTTP_UPSTREAM_FT_TIMEOUT)); | |
4262 | |
4263 if (conf->upstream.next_upstream & NGX_HTTP_UPSTREAM_FT_OFF) { | |
4264 conf->upstream.next_upstream = NGX_CONF_BITMASK_SET | |
4265 |NGX_HTTP_UPSTREAM_FT_OFF; | |
4266 } | |
4267 | |
4268 ngx_conf_merge_value(conf->upstream.intercept_errors, | |
4269 prev->upstream.intercept_errors, 0); | |
4270 | |
4271 #if (NGX_HTTP_SSL) | |
4272 | |
4273 ngx_conf_merge_value(conf->upstream.ssl_session_reuse, | |
4274 prev->upstream.ssl_session_reuse, 1); | |
4275 | |
4276 ngx_conf_merge_bitmask_value(conf->ssl_protocols, prev->ssl_protocols, | |
4277 (NGX_CONF_BITMASK_SET|NGX_SSL_TLSv1 | |
4278 |NGX_SSL_TLSv1_1|NGX_SSL_TLSv1_2)); | |
4279 | |
4280 ngx_conf_merge_str_value(conf->ssl_ciphers, prev->ssl_ciphers, | |
4281 "DEFAULT"); | |
4282 | |
4283 if (conf->upstream.ssl_name == NULL) { | |
4284 conf->upstream.ssl_name = prev->upstream.ssl_name; | |
4285 } | |
4286 | |
4287 ngx_conf_merge_value(conf->upstream.ssl_server_name, | |
4288 prev->upstream.ssl_server_name, 0); | |
4289 ngx_conf_merge_value(conf->upstream.ssl_verify, | |
4290 prev->upstream.ssl_verify, 0); | |
4291 ngx_conf_merge_uint_value(conf->ssl_verify_depth, | |
4292 prev->ssl_verify_depth, 1); | |
4293 ngx_conf_merge_str_value(conf->ssl_trusted_certificate, | |
4294 prev->ssl_trusted_certificate, ""); | |
4295 ngx_conf_merge_str_value(conf->ssl_crl, prev->ssl_crl, ""); | |
4296 | |
4297 ngx_conf_merge_str_value(conf->ssl_certificate, | |
4298 prev->ssl_certificate, ""); | |
4299 ngx_conf_merge_str_value(conf->ssl_certificate_key, | |
4300 prev->ssl_certificate_key, ""); | |
4301 ngx_conf_merge_ptr_value(conf->ssl_passwords, prev->ssl_passwords, NULL); | |
4302 | |
4303 if (conf->ssl && ngx_http_grpc_set_ssl(cf, conf) != NGX_OK) { | |
4304 return NGX_CONF_ERROR; | |
4305 } | |
4306 | |
4307 #endif | |
4308 | |
4309 hash.max_size = 512; | |
4310 hash.bucket_size = ngx_align(64, ngx_cacheline_size); | |
4311 hash.name = "grpc_headers_hash"; | |
4312 | |
4313 if (ngx_http_upstream_hide_headers_hash(cf, &conf->upstream, | |
4314 &prev->upstream, ngx_http_grpc_hide_headers, &hash) | |
4315 != NGX_OK) | |
4316 { | |
4317 return NGX_CONF_ERROR; | |
4318 } | |
4319 | |
4320 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4321 | |
4322 if (clcf->noname && conf->upstream.upstream == NULL) { | |
4323 conf->upstream.upstream = prev->upstream.upstream; | |
4324 conf->host = prev->host; | |
4325 #if (NGX_HTTP_SSL) | |
4326 conf->upstream.ssl = prev->upstream.ssl; | |
4327 #endif | |
4328 } | |
4329 | |
4330 if (clcf->lmt_excpt && clcf->handler == NULL && conf->upstream.upstream) { | |
4331 clcf->handler = ngx_http_grpc_handler; | |
4332 } | |
4333 | |
4334 if (conf->headers_source == NULL) { | |
4335 conf->headers = prev->headers; | |
4336 conf->headers_source = prev->headers_source; | |
4337 conf->host_set = prev->host_set; | |
4338 } | |
4339 | |
4340 rc = ngx_http_grpc_init_headers(cf, conf, &conf->headers, | |
4341 ngx_http_grpc_headers); | |
4342 if (rc != NGX_OK) { | |
4343 return NGX_CONF_ERROR; | |
4344 } | |
4345 | |
4346 /* | |
4347 * special handling to preserve conf->headers in the "http" section | |
4348 * to inherit it to all servers | |
4349 */ | |
4350 | |
4351 if (prev->headers.hash.buckets == NULL | |
4352 && conf->headers_source == prev->headers_source) | |
4353 { | |
4354 prev->headers = conf->headers; | |
4355 prev->host_set = conf->host_set; | |
4356 } | |
4357 | |
4358 return NGX_CONF_OK; | |
4359 } | |
4360 | |
4361 | |
4362 static ngx_int_t | |
4363 ngx_http_grpc_init_headers(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *conf, | |
4364 ngx_http_grpc_headers_t *headers, ngx_keyval_t *default_headers) | |
4365 { | |
4366 u_char *p; | |
4367 size_t size; | |
4368 uintptr_t *code; | |
4369 ngx_uint_t i; | |
4370 ngx_array_t headers_names, headers_merged; | |
4371 ngx_keyval_t *src, *s, *h; | |
4372 ngx_hash_key_t *hk; | |
4373 ngx_hash_init_t hash; | |
4374 ngx_http_script_compile_t sc; | |
4375 ngx_http_script_copy_code_t *copy; | |
4376 | |
4377 if (headers->hash.buckets) { | |
4378 return NGX_OK; | |
4379 } | |
4380 | |
4381 if (ngx_array_init(&headers_names, cf->temp_pool, 4, sizeof(ngx_hash_key_t)) | |
4382 != NGX_OK) | |
4383 { | |
4384 return NGX_ERROR; | |
4385 } | |
4386 | |
4387 if (ngx_array_init(&headers_merged, cf->temp_pool, 4, sizeof(ngx_keyval_t)) | |
4388 != NGX_OK) | |
4389 { | |
4390 return NGX_ERROR; | |
4391 } | |
4392 | |
4393 headers->lengths = ngx_array_create(cf->pool, 64, 1); | |
4394 if (headers->lengths == NULL) { | |
4395 return NGX_ERROR; | |
4396 } | |
4397 | |
4398 headers->values = ngx_array_create(cf->pool, 512, 1); | |
4399 if (headers->values == NULL) { | |
4400 return NGX_ERROR; | |
4401 } | |
4402 | |
4403 if (conf->headers_source) { | |
4404 | |
4405 src = conf->headers_source->elts; | |
4406 for (i = 0; i < conf->headers_source->nelts; i++) { | |
4407 | |
4408 if (src[i].key.len == 4 | |
4409 && ngx_strncasecmp(src[i].key.data, (u_char *) "Host", 4) == 0) | |
4410 { | |
4411 conf->host_set = 1; | |
4412 } | |
4413 | |
4414 s = ngx_array_push(&headers_merged); | |
4415 if (s == NULL) { | |
4416 return NGX_ERROR; | |
4417 } | |
4418 | |
4419 *s = src[i]; | |
4420 } | |
4421 } | |
4422 | |
4423 h = default_headers; | |
4424 | |
4425 while (h->key.len) { | |
4426 | |
4427 src = headers_merged.elts; | |
4428 for (i = 0; i < headers_merged.nelts; i++) { | |
4429 if (ngx_strcasecmp(h->key.data, src[i].key.data) == 0) { | |
4430 goto next; | |
4431 } | |
4432 } | |
4433 | |
4434 s = ngx_array_push(&headers_merged); | |
4435 if (s == NULL) { | |
4436 return NGX_ERROR; | |
4437 } | |
4438 | |
4439 *s = *h; | |
4440 | |
4441 next: | |
4442 | |
4443 h++; | |
4444 } | |
4445 | |
4446 | |
4447 src = headers_merged.elts; | |
4448 for (i = 0; i < headers_merged.nelts; i++) { | |
4449 | |
4450 hk = ngx_array_push(&headers_names); | |
4451 if (hk == NULL) { | |
4452 return NGX_ERROR; | |
4453 } | |
4454 | |
4455 hk->key = src[i].key; | |
4456 hk->key_hash = ngx_hash_key_lc(src[i].key.data, src[i].key.len); | |
4457 hk->value = (void *) 1; | |
4458 | |
4459 if (src[i].value.len == 0) { | |
4460 continue; | |
4461 } | |
4462 | |
4463 copy = ngx_array_push_n(headers->lengths, | |
4464 sizeof(ngx_http_script_copy_code_t)); | |
4465 if (copy == NULL) { | |
4466 return NGX_ERROR; | |
4467 } | |
4468 | |
7271
9e25a5380a21
Silenced -Wcast-function-type warnings (closes #1546).
Sergey Kandaurov <pluknet@nginx.com>
parents:
7249
diff
changeset
|
4469 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
|
4470 ngx_http_script_copy_len_code; |
7233 | 4471 copy->len = src[i].key.len; |
4472 | |
4473 size = (sizeof(ngx_http_script_copy_code_t) | |
4474 + src[i].key.len + sizeof(uintptr_t) - 1) | |
4475 & ~(sizeof(uintptr_t) - 1); | |
4476 | |
4477 copy = ngx_array_push_n(headers->values, size); | |
4478 if (copy == NULL) { | |
4479 return NGX_ERROR; | |
4480 } | |
4481 | |
4482 copy->code = ngx_http_script_copy_code; | |
4483 copy->len = src[i].key.len; | |
4484 | |
4485 p = (u_char *) copy + sizeof(ngx_http_script_copy_code_t); | |
4486 ngx_memcpy(p, src[i].key.data, src[i].key.len); | |
4487 | |
4488 ngx_memzero(&sc, sizeof(ngx_http_script_compile_t)); | |
4489 | |
4490 sc.cf = cf; | |
4491 sc.source = &src[i].value; | |
4492 sc.flushes = &headers->flushes; | |
4493 sc.lengths = &headers->lengths; | |
4494 sc.values = &headers->values; | |
4495 | |
4496 if (ngx_http_script_compile(&sc) != NGX_OK) { | |
4497 return NGX_ERROR; | |
4498 } | |
4499 | |
4500 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4501 if (code == NULL) { | |
4502 return NGX_ERROR; | |
4503 } | |
4504 | |
4505 *code = (uintptr_t) NULL; | |
4506 | |
4507 code = ngx_array_push_n(headers->values, sizeof(uintptr_t)); | |
4508 if (code == NULL) { | |
4509 return NGX_ERROR; | |
4510 } | |
4511 | |
4512 *code = (uintptr_t) NULL; | |
4513 } | |
4514 | |
4515 code = ngx_array_push_n(headers->lengths, sizeof(uintptr_t)); | |
4516 if (code == NULL) { | |
4517 return NGX_ERROR; | |
4518 } | |
4519 | |
4520 *code = (uintptr_t) NULL; | |
4521 | |
4522 | |
4523 hash.hash = &headers->hash; | |
4524 hash.key = ngx_hash_key_lc; | |
4525 hash.max_size = 512; | |
4526 hash.bucket_size = 64; | |
4527 hash.name = "grpc_headers_hash"; | |
4528 hash.pool = cf->pool; | |
4529 hash.temp_pool = NULL; | |
4530 | |
4531 return ngx_hash_init(&hash, headers_names.elts, headers_names.nelts); | |
4532 } | |
4533 | |
4534 | |
4535 static char * | |
4536 ngx_http_grpc_pass(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4537 { | |
4538 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4539 | |
4540 size_t add; | |
4541 ngx_str_t *value, *url; | |
4542 ngx_url_t u; | |
4543 ngx_http_core_loc_conf_t *clcf; | |
4544 | |
4545 if (glcf->upstream.upstream) { | |
4546 return "is duplicate"; | |
4547 } | |
4548 | |
4549 value = cf->args->elts; | |
4550 url = &value[1]; | |
4551 | |
4552 if (ngx_strncasecmp(url->data, (u_char *) "grpc://", 7) == 0) { | |
4553 add = 7; | |
4554 | |
4555 } else if (ngx_strncasecmp(url->data, (u_char *) "grpcs://", 8) == 0) { | |
4556 | |
4557 #if (NGX_HTTP_SSL) | |
4558 glcf->ssl = 1; | |
4559 | |
4560 add = 8; | |
4561 #else | |
4562 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, | |
4563 "grpcs protocol requires SSL support"); | |
4564 return NGX_CONF_ERROR; | |
4565 #endif | |
4566 | |
4567 } else { | |
4568 add = 0; | |
4569 } | |
4570 | |
4571 ngx_memzero(&u, sizeof(ngx_url_t)); | |
4572 | |
4573 u.url.len = url->len - add; | |
4574 u.url.data = url->data + add; | |
4575 u.no_resolve = 1; | |
4576 | |
4577 glcf->upstream.upstream = ngx_http_upstream_add(cf, &u, 0); | |
4578 if (glcf->upstream.upstream == NULL) { | |
4579 return NGX_CONF_ERROR; | |
4580 } | |
4581 | |
4582 if (u.family != AF_UNIX) { | |
4583 | |
4584 if (u.no_port) { | |
4585 glcf->host = u.host; | |
4586 | |
4587 } else { | |
4588 glcf->host.len = u.host.len + 1 + u.port_text.len; | |
4589 glcf->host.data = u.host.data; | |
4590 } | |
4591 | |
4592 } else { | |
4593 ngx_str_set(&glcf->host, "localhost"); | |
4594 } | |
4595 | |
4596 clcf = ngx_http_conf_get_module_loc_conf(cf, ngx_http_core_module); | |
4597 | |
4598 clcf->handler = ngx_http_grpc_handler; | |
4599 | |
7321
45e513c3540d
Fixed invalid access to location defined as an empty string.
Ruslan Ermilov <ru@nginx.com>
parents:
7320
diff
changeset
|
4600 if (clcf->name.len && clcf->name.data[clcf->name.len - 1] == '/') { |
7233 | 4601 clcf->auto_redirect = 1; |
4602 } | |
4603 | |
4604 return NGX_CONF_OK; | |
4605 } | |
4606 | |
4607 | |
4608 #if (NGX_HTTP_SSL) | |
4609 | |
4610 static char * | |
4611 ngx_http_grpc_ssl_password_file(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) | |
4612 { | |
4613 ngx_http_grpc_loc_conf_t *glcf = conf; | |
4614 | |
4615 ngx_str_t *value; | |
4616 | |
4617 if (glcf->ssl_passwords != NGX_CONF_UNSET_PTR) { | |
4618 return "is duplicate"; | |
4619 } | |
4620 | |
4621 value = cf->args->elts; | |
4622 | |
4623 glcf->ssl_passwords = ngx_ssl_read_password_file(cf, &value[1]); | |
4624 | |
4625 if (glcf->ssl_passwords == NULL) { | |
4626 return NGX_CONF_ERROR; | |
4627 } | |
4628 | |
4629 return NGX_CONF_OK; | |
4630 } | |
4631 | |
4632 | |
4633 static ngx_int_t | |
4634 ngx_http_grpc_set_ssl(ngx_conf_t *cf, ngx_http_grpc_loc_conf_t *glcf) | |
4635 { | |
4636 ngx_pool_cleanup_t *cln; | |
4637 | |
4638 glcf->upstream.ssl = ngx_pcalloc(cf->pool, sizeof(ngx_ssl_t)); | |
4639 if (glcf->upstream.ssl == NULL) { | |
4640 return NGX_ERROR; | |
4641 } | |
4642 | |
4643 glcf->upstream.ssl->log = cf->log; | |
4644 | |
4645 if (ngx_ssl_create(glcf->upstream.ssl, glcf->ssl_protocols, NULL) | |
4646 != NGX_OK) | |
4647 { | |
4648 return NGX_ERROR; | |
4649 } | |
4650 | |
4651 cln = ngx_pool_cleanup_add(cf->pool, 0); | |
4652 if (cln == NULL) { | |
4653 return NGX_ERROR; | |
4654 } | |
4655 | |
4656 cln->handler = ngx_ssl_cleanup_ctx; | |
4657 cln->data = glcf->upstream.ssl; | |
4658 | |
4659 if (glcf->ssl_certificate.len) { | |
4660 | |
4661 if (glcf->ssl_certificate_key.len == 0) { | |
4662 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4663 "no \"grpc_ssl_certificate_key\" is defined " | |
4664 "for certificate \"%V\"", &glcf->ssl_certificate); | |
4665 return NGX_ERROR; | |
4666 } | |
4667 | |
4668 if (ngx_ssl_certificate(cf, glcf->upstream.ssl, &glcf->ssl_certificate, | |
4669 &glcf->ssl_certificate_key, glcf->ssl_passwords) | |
4670 != NGX_OK) | |
4671 { | |
4672 return NGX_ERROR; | |
4673 } | |
4674 } | |
4675 | |
4676 if (ngx_ssl_ciphers(cf, glcf->upstream.ssl, &glcf->ssl_ciphers, 0) | |
4677 != NGX_OK) | |
4678 { | |
4679 return NGX_ERROR; | |
4680 } | |
4681 | |
4682 if (glcf->upstream.ssl_verify) { | |
4683 if (glcf->ssl_trusted_certificate.len == 0) { | |
4684 ngx_log_error(NGX_LOG_EMERG, cf->log, 0, | |
4685 "no grpc_ssl_trusted_certificate for grpc_ssl_verify"); | |
4686 return NGX_ERROR; | |
4687 } | |
4688 | |
4689 if (ngx_ssl_trusted_certificate(cf, glcf->upstream.ssl, | |
4690 &glcf->ssl_trusted_certificate, | |
4691 glcf->ssl_verify_depth) | |
4692 != NGX_OK) | |
4693 { | |
4694 return NGX_ERROR; | |
4695 } | |
4696 | |
4697 if (ngx_ssl_crl(cf, glcf->upstream.ssl, &glcf->ssl_crl) != NGX_OK) { | |
4698 return NGX_ERROR; | |
4699 } | |
4700 } | |
4701 | |
7320
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4702 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
|
4703 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
|
4704 != NGX_OK) |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4705 { |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4706 return NGX_ERROR; |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4707 } |
696df3ac27ac
SSL: save sessions for upstream peers using a callback function.
Sergey Kandaurov <pluknet@nginx.com>
parents:
7305
diff
changeset
|
4708 |
7233 | 4709 #ifdef TLSEXT_TYPE_application_layer_protocol_negotiation |
4710 | |
4711 if (SSL_CTX_set_alpn_protos(glcf->upstream.ssl->ctx, | |
4712 (u_char *) "\x02h2", 3) | |
4713 != 0) | |
4714 { | |
4715 ngx_ssl_error(NGX_LOG_EMERG, cf->log, 0, | |
4716 "SSL_CTX_set_alpn_protos() failed"); | |
4717 return NGX_ERROR; | |
4718 } | |
4719 | |
4720 #endif | |
4721 | |
4722 return NGX_OK; | |
4723 } | |
4724 | |
4725 #endif |