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comparison src/http/modules/ngx_http_quic_module.c @ 7999:0d2b2664b41c quic

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QUIC: added "quic" listen parameter. The parameter allows processing HTTP/0.9-2 over QUIC. Also, introduced ngx_http_quic_module and moved QUIC settings there
author Roman Arutyunyan <arut@nginx.com>
date Tue, 21 Jul 2020 23:09:22 +0300
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children 893b3313f53c
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7998:f537f99b86ee 7999:0d2b2664b41c
1
2 /*
3 * Copyright (C) Nginx, Inc.
4 * Copyright (C) Roman Arutyunyan
5 */
6
7
8 #include <ngx_config.h>
9 #include <ngx_core.h>
10 #include <ngx_http.h>
11
12
13 static ngx_int_t ngx_http_variable_quic(ngx_http_request_t *r,
14 ngx_http_variable_value_t *v, uintptr_t data);
15 static ngx_int_t ngx_http_quic_add_variables(ngx_conf_t *cf);
16 static void *ngx_http_quic_create_srv_conf(ngx_conf_t *cf);
17 static char *ngx_http_quic_merge_srv_conf(ngx_conf_t *cf, void *parent,
18 void *child);
19 static char *ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post,
20 void *data);
21 static char *ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post,
22 void *data);
23
24
25 static ngx_conf_post_t ngx_http_quic_max_ack_delay_post =
26 { ngx_http_quic_max_ack_delay };
27 static ngx_conf_post_t ngx_http_quic_max_udp_payload_size_post =
28 { ngx_http_quic_max_udp_payload_size };
29 static ngx_conf_num_bounds_t ngx_http_quic_ack_delay_exponent_bounds =
30 { ngx_conf_check_num_bounds, 0, 20 };
31 static ngx_conf_num_bounds_t ngx_http_quic_active_connection_id_limit_bounds =
32 { ngx_conf_check_num_bounds, 2, -1 };
33
34
35 static ngx_command_t ngx_http_quic_commands[] = {
36
37 { ngx_string("quic_max_idle_timeout"),
38 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
39 ngx_conf_set_msec_slot,
40 NGX_HTTP_SRV_CONF_OFFSET,
41 offsetof(ngx_quic_conf_t, tp.max_idle_timeout),
42 NULL },
43
44 { ngx_string("quic_max_ack_delay"),
45 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
46 ngx_conf_set_msec_slot,
47 NGX_HTTP_SRV_CONF_OFFSET,
48 offsetof(ngx_quic_conf_t, tp.max_ack_delay),
49 &ngx_http_quic_max_ack_delay_post },
50
51 { ngx_string("quic_max_udp_payload_size"),
52 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
53 ngx_conf_set_size_slot,
54 NGX_HTTP_SRV_CONF_OFFSET,
55 offsetof(ngx_quic_conf_t, tp.max_udp_payload_size),
56 &ngx_http_quic_max_udp_payload_size_post },
57
58 { ngx_string("quic_initial_max_data"),
59 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
60 ngx_conf_set_size_slot,
61 NGX_HTTP_SRV_CONF_OFFSET,
62 offsetof(ngx_quic_conf_t, tp.initial_max_data),
63 NULL },
64
65 { ngx_string("quic_initial_max_stream_data_bidi_local"),
66 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
67 ngx_conf_set_size_slot,
68 NGX_HTTP_SRV_CONF_OFFSET,
69 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_bidi_local),
70 NULL },
71
72 { ngx_string("quic_initial_max_stream_data_bidi_remote"),
73 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
74 ngx_conf_set_size_slot,
75 NGX_HTTP_SRV_CONF_OFFSET,
76 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_bidi_remote),
77 NULL },
78
79 { ngx_string("quic_initial_max_stream_data_uni"),
80 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
81 ngx_conf_set_size_slot,
82 NGX_HTTP_SRV_CONF_OFFSET,
83 offsetof(ngx_quic_conf_t, tp.initial_max_stream_data_uni),
84 NULL },
85
86 { ngx_string("quic_initial_max_streams_bidi"),
87 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
88 ngx_conf_set_num_slot,
89 NGX_HTTP_SRV_CONF_OFFSET,
90 offsetof(ngx_quic_conf_t, tp.initial_max_streams_bidi),
91 NULL },
92
93 { ngx_string("quic_initial_max_streams_uni"),
94 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
95 ngx_conf_set_num_slot,
96 NGX_HTTP_SRV_CONF_OFFSET,
97 offsetof(ngx_quic_conf_t, tp.initial_max_streams_uni),
98 NULL },
99
100 { ngx_string("quic_ack_delay_exponent"),
101 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
102 ngx_conf_set_num_slot,
103 NGX_HTTP_SRV_CONF_OFFSET,
104 offsetof(ngx_quic_conf_t, tp.ack_delay_exponent),
105 &ngx_http_quic_ack_delay_exponent_bounds },
106
107 { ngx_string("quic_active_migration"),
108 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
109 ngx_conf_set_num_slot,
110 NGX_HTTP_SRV_CONF_OFFSET,
111 offsetof(ngx_quic_conf_t, tp.disable_active_migration),
112 NULL },
113
114 { ngx_string("quic_active_connection_id_limit"),
115 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_TAKE1,
116 ngx_conf_set_num_slot,
117 NGX_HTTP_SRV_CONF_OFFSET,
118 offsetof(ngx_quic_conf_t, tp.active_connection_id_limit),
119 &ngx_http_quic_active_connection_id_limit_bounds },
120
121 { ngx_string("quic_retry"),
122 NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_CONF_FLAG,
123 ngx_conf_set_flag_slot,
124 NGX_HTTP_SRV_CONF_OFFSET,
125 offsetof(ngx_quic_conf_t, retry),
126 NULL },
127
128 ngx_null_command
129 };
130
131
132 static ngx_http_module_t ngx_http_quic_module_ctx = {
133 ngx_http_quic_add_variables, /* preconfiguration */
134 NULL, /* postconfiguration */
135
136 NULL, /* create main configuration */
137 NULL, /* init main configuration */
138
139 ngx_http_quic_create_srv_conf, /* create server configuration */
140 ngx_http_quic_merge_srv_conf, /* merge server configuration */
141
142 NULL, /* create location configuration */
143 NULL /* merge location configuration */
144 };
145
146
147 ngx_module_t ngx_http_quic_module = {
148 NGX_MODULE_V1,
149 &ngx_http_quic_module_ctx, /* module context */
150 ngx_http_quic_commands, /* module directives */
151 NGX_HTTP_MODULE, /* module type */
152 NULL, /* init master */
153 NULL, /* init module */
154 NULL, /* init process */
155 NULL, /* init thread */
156 NULL, /* exit thread */
157 NULL, /* exit process */
158 NULL, /* exit master */
159 NGX_MODULE_V1_PADDING
160 };
161
162
163 static ngx_http_variable_t ngx_http_quic_vars[] = {
164
165 { ngx_string("quic"), NULL, ngx_http_variable_quic, 0, 0, 0 },
166
167 ngx_http_null_variable
168 };
169
170
171 static ngx_int_t
172 ngx_http_variable_quic(ngx_http_request_t *r,
173 ngx_http_variable_value_t *v, uintptr_t data)
174 {
175 if (r->connection->qs) {
176
177 v->len = 4;
178 v->valid = 1;
179 v->no_cacheable = 1;
180 v->not_found = 0;
181 v->data = (u_char *) "quic";
182 return NGX_OK;
183 }
184
185 v->not_found = 1;
186
187 return NGX_OK;
188 }
189
190
191 static ngx_int_t
192 ngx_http_quic_add_variables(ngx_conf_t *cf)
193 {
194 ngx_http_variable_t *var, *v;
195
196 for (v = ngx_http_quic_vars; v->name.len; v++) {
197 var = ngx_http_add_variable(cf, &v->name, v->flags);
198 if (var == NULL) {
199 return NGX_ERROR;
200 }
201
202 var->get_handler = v->get_handler;
203 var->data = v->data;
204 }
205
206 return NGX_OK;
207 }
208
209
210 static void *
211 ngx_http_quic_create_srv_conf(ngx_conf_t *cf)
212 {
213 ngx_quic_conf_t *conf;
214
215 conf = ngx_pcalloc(cf->pool, sizeof(ngx_quic_conf_t));
216 if (conf == NULL) {
217 return NULL;
218 }
219
220 /*
221 * set by ngx_pcalloc():
222 *
223 * conf->tp.original_dcid = { 0, NULL };
224 * conf->tp.initial_scid = { 0, NULL };
225 * conf->tp.retry_scid = { 0, NULL };
226 * conf->tp.stateless_reset_token = { 0 }
227 * conf->tp.preferred_address = NULL
228 */
229
230 conf->tp.max_idle_timeout = NGX_CONF_UNSET_MSEC;
231 conf->tp.max_ack_delay = NGX_CONF_UNSET_MSEC;
232 conf->tp.max_udp_payload_size = NGX_CONF_UNSET_SIZE;
233 conf->tp.initial_max_data = NGX_CONF_UNSET_SIZE;
234 conf->tp.initial_max_stream_data_bidi_local = NGX_CONF_UNSET_SIZE;
235 conf->tp.initial_max_stream_data_bidi_remote = NGX_CONF_UNSET_SIZE;
236 conf->tp.initial_max_stream_data_uni = NGX_CONF_UNSET_SIZE;
237 conf->tp.initial_max_streams_bidi = NGX_CONF_UNSET_UINT;
238 conf->tp.initial_max_streams_uni = NGX_CONF_UNSET_UINT;
239 conf->tp.ack_delay_exponent = NGX_CONF_UNSET_UINT;
240 conf->tp.disable_active_migration = NGX_CONF_UNSET_UINT;
241 conf->tp.active_connection_id_limit = NGX_CONF_UNSET_UINT;
242
243 conf->retry = NGX_CONF_UNSET;
244
245 return conf;
246 }
247
248
249 static char *
250 ngx_http_quic_merge_srv_conf(ngx_conf_t *cf, void *parent, void *child)
251 {
252 ngx_quic_conf_t *prev = parent;
253 ngx_quic_conf_t *conf = child;
254
255 ngx_conf_merge_msec_value(conf->tp.max_idle_timeout,
256 prev->tp.max_idle_timeout, 60000);
257
258 ngx_conf_merge_msec_value(conf->tp.max_ack_delay,
259 prev->tp.max_ack_delay,
260 NGX_QUIC_DEFAULT_MAX_ACK_DELAY);
261
262 ngx_conf_merge_size_value(conf->tp.max_udp_payload_size,
263 prev->tp.max_udp_payload_size,
264 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
265
266 ngx_conf_merge_size_value(conf->tp.initial_max_data,
267 prev->tp.initial_max_data,
268 16 * NGX_QUIC_STREAM_BUFSIZE);
269
270 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_bidi_local,
271 prev->tp.initial_max_stream_data_bidi_local,
272 NGX_QUIC_STREAM_BUFSIZE);
273
274 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_bidi_remote,
275 prev->tp.initial_max_stream_data_bidi_remote,
276 NGX_QUIC_STREAM_BUFSIZE);
277
278 ngx_conf_merge_size_value(conf->tp.initial_max_stream_data_uni,
279 prev->tp.initial_max_stream_data_uni,
280 NGX_QUIC_STREAM_BUFSIZE);
281
282 ngx_conf_merge_uint_value(conf->tp.initial_max_streams_bidi,
283 prev->tp.initial_max_streams_bidi, 16);
284
285 ngx_conf_merge_uint_value(conf->tp.initial_max_streams_uni,
286 prev->tp.initial_max_streams_uni, 16);
287
288 ngx_conf_merge_uint_value(conf->tp.ack_delay_exponent,
289 prev->tp.ack_delay_exponent,
290 NGX_QUIC_DEFAULT_ACK_DELAY_EXPONENT);
291
292 ngx_conf_merge_uint_value(conf->tp.disable_active_migration,
293 prev->tp.disable_active_migration, 1);
294
295 ngx_conf_merge_uint_value(conf->tp.active_connection_id_limit,
296 prev->tp.active_connection_id_limit, 2);
297
298 ngx_conf_merge_value(conf->retry, prev->retry, 0);
299
300 if (conf->retry) {
301 if (RAND_bytes(conf->token_key, sizeof(conf->token_key)) <= 0) {
302 return NGX_CONF_ERROR;
303 }
304 }
305
306 return NGX_CONF_OK;
307 }
308
309
310 static char *
311 ngx_http_quic_max_ack_delay(ngx_conf_t *cf, void *post, void *data)
312 {
313 ngx_msec_t *sp = data;
314
315 if (*sp > 16384) {
316 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
317 "\"quic_max_ack_delay\" must be less than 16384");
318
319 return NGX_CONF_ERROR;
320 }
321
322 return NGX_CONF_OK;
323 }
324
325
326 static char *
327 ngx_http_quic_max_udp_payload_size(ngx_conf_t *cf, void *post, void *data)
328 {
329 size_t *sp = data;
330
331 if (*sp < NGX_QUIC_MIN_INITIAL_SIZE
332 || *sp > NGX_QUIC_MAX_UDP_PAYLOAD_SIZE)
333 {
334 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
335 "\"quic_max_udp_payload_size\" must be between "
336 "%d and %d",
337 NGX_QUIC_MIN_INITIAL_SIZE,
338 NGX_QUIC_MAX_UDP_PAYLOAD_SIZE);
339
340 return NGX_CONF_ERROR;
341 }
342
343 return NGX_CONF_OK;
344 }