Mercurial > hg > nginx
annotate src/http/v3/ngx_http_v3_tables.c @ 8766:70701edfc5d4 quic
HTTP/3: fixed decoder stream stubs.
Now ngx_http_v3_ack_header() and ngx_http_v3_inc_insert_count() always generate
decoder error. Our implementation does not use dynamic tables and does not
expect client to send Section Acknowledgement or Insert Count Increment.
Stream Cancellation, on the other hand, is allowed to be sent anyway. This is
why ngx_http_v3_cancel_stream() does not return an error.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 04 May 2021 13:38:59 +0300 |
parents | 279ad36f2f4b |
children | 33ec97749b5f |
rev | line source |
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8215 | 1 |
2 /* | |
3 * Copyright (C) Roman Arutyunyan | |
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 | |
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13 #define ngx_http_v3_table_entry_size(n, v) ((n)->len + (v)->len + 32) |
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14 |
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15 |
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16 static ngx_int_t ngx_http_v3_evict(ngx_connection_t *c, size_t need); |
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17 static void ngx_http_v3_cleanup_table(void *data); |
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18 static void ngx_http_v3_unblock(void *data); |
8215 | 19 static ngx_int_t ngx_http_v3_new_header(ngx_connection_t *c); |
20 | |
21 | |
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22 typedef struct { |
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23 ngx_queue_t queue; |
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24 ngx_connection_t *connection; |
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25 ngx_uint_t *nblocked; |
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26 } ngx_http_v3_block_t; |
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27 |
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28 |
8215 | 29 static ngx_http_v3_header_t ngx_http_v3_static_table[] = { |
30 | |
31 { ngx_string(":authority"), ngx_string("") }, | |
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32 { ngx_string(":path"), ngx_string("/") }, |
8215 | 33 { ngx_string("age"), ngx_string("0") }, |
34 { ngx_string("content-disposition"), ngx_string("") }, | |
35 { ngx_string("content-length"), ngx_string("0") }, | |
36 { ngx_string("cookie"), ngx_string("") }, | |
37 { ngx_string("date"), ngx_string("") }, | |
38 { ngx_string("etag"), ngx_string("") }, | |
39 { ngx_string("if-modified-since"), ngx_string("") }, | |
40 { ngx_string("if-none-match"), ngx_string("") }, | |
41 { ngx_string("last-modified"), ngx_string("") }, | |
42 { ngx_string("link"), ngx_string("") }, | |
43 { ngx_string("location"), ngx_string("") }, | |
44 { ngx_string("referer"), ngx_string("") }, | |
45 { ngx_string("set-cookie"), ngx_string("") }, | |
46 { ngx_string(":method"), ngx_string("CONNECT") }, | |
47 { ngx_string(":method"), ngx_string("DELETE") }, | |
48 { ngx_string(":method"), ngx_string("GET") }, | |
49 { ngx_string(":method"), ngx_string("HEAD") }, | |
50 { ngx_string(":method"), ngx_string("OPTIONS") }, | |
51 { ngx_string(":method"), ngx_string("POST") }, | |
52 { ngx_string(":method"), ngx_string("PUT") }, | |
53 { ngx_string(":scheme"), ngx_string("http") }, | |
54 { ngx_string(":scheme"), ngx_string("https") }, | |
55 { ngx_string(":status"), ngx_string("103") }, | |
56 { ngx_string(":status"), ngx_string("200") }, | |
57 { ngx_string(":status"), ngx_string("304") }, | |
58 { ngx_string(":status"), ngx_string("404") }, | |
59 { ngx_string(":status"), ngx_string("503") }, | |
60 { ngx_string("accept"), ngx_string("*/*") }, | |
61 { ngx_string("accept"), | |
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62 ngx_string("application/dns-message") }, |
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63 { ngx_string("accept-encoding"), ngx_string("gzip, deflate, br") }, |
8215 | 64 { ngx_string("accept-ranges"), ngx_string("bytes") }, |
65 { ngx_string("access-control-allow-headers"), | |
66 ngx_string("cache-control") }, | |
67 { ngx_string("access-control-allow-headers"), | |
68 ngx_string("content-type") }, | |
69 { ngx_string("access-control-allow-origin"), | |
70 ngx_string("*") }, | |
71 { ngx_string("cache-control"), ngx_string("max-age=0") }, | |
72 { ngx_string("cache-control"), ngx_string("max-age=2592000") }, | |
73 { ngx_string("cache-control"), ngx_string("max-age=604800") }, | |
74 { ngx_string("cache-control"), ngx_string("no-cache") }, | |
75 { ngx_string("cache-control"), ngx_string("no-store") }, | |
76 { ngx_string("cache-control"), | |
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77 ngx_string("public, max-age=31536000") }, |
8215 | 78 { ngx_string("content-encoding"), ngx_string("br") }, |
79 { ngx_string("content-encoding"), ngx_string("gzip") }, | |
80 { ngx_string("content-type"), | |
81 ngx_string("application/dns-message") }, | |
82 { ngx_string("content-type"), | |
83 ngx_string("application/javascript") }, | |
84 { ngx_string("content-type"), ngx_string("application/json") }, | |
85 { ngx_string("content-type"), | |
86 ngx_string("application/x-www-form-urlencoded") }, | |
87 { ngx_string("content-type"), ngx_string("image/gif") }, | |
88 { ngx_string("content-type"), ngx_string("image/jpeg") }, | |
89 { ngx_string("content-type"), ngx_string("image/png") }, | |
90 { ngx_string("content-type"), ngx_string("text/css") }, | |
91 { ngx_string("content-type"), | |
92 ngx_string("text/html;charset=utf-8") }, | |
93 { ngx_string("content-type"), ngx_string("text/plain") }, | |
94 { ngx_string("content-type"), | |
95 ngx_string("text/plain;charset=utf-8") }, | |
96 { ngx_string("range"), ngx_string("bytes=0-") }, | |
97 { ngx_string("strict-transport-security"), | |
98 ngx_string("max-age=31536000") }, | |
99 { ngx_string("strict-transport-security"), | |
100 ngx_string("max-age=31536000;includesubdomains") }, | |
101 { ngx_string("strict-transport-security"), | |
102 ngx_string("max-age=31536000;includesubdomains;preload") }, | |
103 { ngx_string("vary"), ngx_string("accept-encoding") }, | |
104 { ngx_string("vary"), ngx_string("origin") }, | |
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105 { ngx_string("x-content-type-options"), |
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106 ngx_string("nosniff") }, |
8215 | 107 { ngx_string("x-xss-protection"), ngx_string("1;mode=block") }, |
108 { ngx_string(":status"), ngx_string("100") }, | |
109 { ngx_string(":status"), ngx_string("204") }, | |
110 { ngx_string(":status"), ngx_string("206") }, | |
111 { ngx_string(":status"), ngx_string("302") }, | |
112 { ngx_string(":status"), ngx_string("400") }, | |
113 { ngx_string(":status"), ngx_string("403") }, | |
114 { ngx_string(":status"), ngx_string("421") }, | |
115 { ngx_string(":status"), ngx_string("425") }, | |
116 { ngx_string(":status"), ngx_string("500") }, | |
117 { ngx_string("accept-language"), ngx_string("") }, | |
118 { ngx_string("access-control-allow-credentials"), | |
119 ngx_string("FALSE") }, | |
120 { ngx_string("access-control-allow-credentials"), | |
121 ngx_string("TRUE") }, | |
122 { ngx_string("access-control-allow-headers"), | |
123 ngx_string("*") }, | |
124 { ngx_string("access-control-allow-methods"), | |
125 ngx_string("get") }, | |
126 { ngx_string("access-control-allow-methods"), | |
127 ngx_string("get, post, options") }, | |
128 { ngx_string("access-control-allow-methods"), | |
129 ngx_string("options") }, | |
130 { ngx_string("access-control-expose-headers"), | |
131 ngx_string("content-length") }, | |
132 { ngx_string("access-control-request-headers"), | |
133 ngx_string("content-type") }, | |
134 { ngx_string("access-control-request-method"), | |
135 ngx_string("get") }, | |
136 { ngx_string("access-control-request-method"), | |
137 ngx_string("post") }, | |
138 { ngx_string("alt-svc"), ngx_string("clear") }, | |
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139 { ngx_string("authorization"), ngx_string("") }, |
8215 | 140 { ngx_string("content-security-policy"), |
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141 ngx_string("script-src 'none';object-src 'none';base-uri 'none'") }, |
8215 | 142 { ngx_string("early-data"), ngx_string("1") }, |
143 { ngx_string("expect-ct"), ngx_string("") }, | |
144 { ngx_string("forwarded"), ngx_string("") }, | |
145 { ngx_string("if-range"), ngx_string("") }, | |
146 { ngx_string("origin"), ngx_string("") }, | |
147 { ngx_string("purpose"), ngx_string("prefetch") }, | |
148 { ngx_string("server"), ngx_string("") }, | |
149 { ngx_string("timing-allow-origin"), ngx_string("*") }, | |
150 { ngx_string("upgrade-insecure-requests"), | |
151 ngx_string("1") }, | |
152 { ngx_string("user-agent"), ngx_string("") }, | |
153 { ngx_string("x-forwarded-for"), ngx_string("") }, | |
154 { ngx_string("x-frame-options"), ngx_string("deny") }, | |
155 { ngx_string("x-frame-options"), ngx_string("sameorigin") } | |
156 }; | |
157 | |
158 | |
159 ngx_int_t | |
160 ngx_http_v3_ref_insert(ngx_connection_t *c, ngx_uint_t dynamic, | |
161 ngx_uint_t index, ngx_str_t *value) | |
162 { | |
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163 ngx_str_t name; |
8215 | 164 |
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165 if (dynamic) { |
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166 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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167 "http3 ref insert dynamic[%ui] \"%V\"", index, value); |
8215 | 168 |
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169 if (ngx_http_v3_lookup(c, index, &name, NULL) != NGX_OK) { |
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170 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
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171 } |
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172 |
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173 } else { |
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174 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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175 "http3 ref insert static[%ui] \"%V\"", index, value); |
8215 | 176 |
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177 if (ngx_http_v3_lookup_static(c, index, &name, NULL) != NGX_OK) { |
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178 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
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179 } |
8215 | 180 } |
181 | |
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182 return ngx_http_v3_insert(c, &name, value); |
8215 | 183 } |
184 | |
185 | |
186 ngx_int_t | |
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187 ngx_http_v3_insert(ngx_connection_t *c, ngx_str_t *name, ngx_str_t *value) |
8215 | 188 { |
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189 u_char *p; |
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190 size_t size; |
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191 ngx_http_v3_header_t *h; |
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192 ngx_http_v3_connection_t *h3c; |
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193 ngx_http_v3_dynamic_table_t *dt; |
8215 | 194 |
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195 size = ngx_http_v3_table_entry_size(name, value); |
8215 | 196 |
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197 if (ngx_http_v3_evict(c, size) != NGX_OK) { |
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198 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
8215 | 199 } |
200 | |
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201 h3c = c->quic->parent->data; |
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202 dt = &h3c->table; |
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203 |
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204 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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205 "http3 insert [%ui] \"%V\":\"%V\", size:%uz", |
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206 dt->base + dt->nelts, name, value, size); |
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207 |
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208 p = ngx_alloc(sizeof(ngx_http_v3_header_t) + name->len + value->len, |
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209 c->log); |
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210 if (p == NULL) { |
8215 | 211 return NGX_ERROR; |
212 } | |
213 | |
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214 h = (ngx_http_v3_header_t *) p; |
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215 |
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216 h->name.data = p + sizeof(ngx_http_v3_header_t); |
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217 h->name.len = name->len; |
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218 h->value.data = ngx_cpymem(h->name.data, name->data, name->len); |
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219 h->value.len = value->len; |
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220 ngx_memcpy(h->value.data, value->data, value->len); |
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221 |
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222 dt->elts[dt->nelts++] = h; |
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223 dt->size += size; |
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224 |
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225 /* TODO increment can be sent less often */ |
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226 |
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227 if (ngx_http_v3_client_inc_insert_count(c, 1) != NGX_OK) { |
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228 return NGX_ERROR; |
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229 } |
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230 |
8215 | 231 if (ngx_http_v3_new_header(c) != NGX_OK) { |
232 return NGX_ERROR; | |
233 } | |
234 | |
235 return NGX_OK; | |
236 } | |
237 | |
238 | |
239 ngx_int_t | |
240 ngx_http_v3_set_capacity(ngx_connection_t *c, ngx_uint_t capacity) | |
241 { | |
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242 ngx_uint_t max, prev_max; |
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243 ngx_connection_t *pc; |
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244 ngx_pool_cleanup_t *cln; |
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245 ngx_http_v3_header_t **elts; |
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246 ngx_http_v3_srv_conf_t *h3scf; |
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247 ngx_http_v3_connection_t *h3c; |
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248 ngx_http_v3_dynamic_table_t *dt; |
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249 |
8215 | 250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
251 "http3 set capacity %ui", capacity); | |
252 | |
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253 pc = c->quic->parent; |
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254 h3c = pc->data; |
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255 h3scf = ngx_http_get_module_srv_conf(h3c->hc.conf_ctx, ngx_http_v3_module); |
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256 |
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257 if (capacity > h3scf->max_table_capacity) { |
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258 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
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259 "client exceeded http3_max_table_capacity limit"); |
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260 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
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261 } |
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262 |
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263 dt = &h3c->table; |
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264 |
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265 if (dt->size > capacity) { |
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266 if (ngx_http_v3_evict(c, dt->size - capacity) != NGX_OK) { |
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267 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
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268 } |
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269 } |
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270 |
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271 max = capacity / 32; |
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272 prev_max = dt->capacity / 32; |
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273 |
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274 if (max > prev_max) { |
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275 elts = ngx_alloc(max * sizeof(void *), c->log); |
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276 if (elts == NULL) { |
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277 return NGX_ERROR; |
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278 } |
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279 |
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280 if (dt->elts == NULL) { |
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281 cln = ngx_pool_cleanup_add(pc->pool, 0); |
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282 if (cln == NULL) { |
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283 return NGX_ERROR; |
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284 } |
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285 |
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286 cln->handler = ngx_http_v3_cleanup_table; |
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287 cln->data = dt; |
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288 |
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289 } else { |
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290 ngx_memcpy(elts, dt->elts, dt->nelts * sizeof(void *)); |
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291 ngx_free(dt->elts); |
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292 } |
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293 |
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294 dt->elts = elts; |
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295 } |
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296 |
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297 dt->capacity = capacity; |
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298 |
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299 return NGX_OK; |
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300 } |
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301 |
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302 |
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303 static void |
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304 ngx_http_v3_cleanup_table(void *data) |
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305 { |
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306 ngx_http_v3_dynamic_table_t *dt = data; |
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307 |
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308 ngx_uint_t n; |
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309 |
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310 for (n = 0; n < dt->nelts; n++) { |
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311 ngx_free(dt->elts[n]); |
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312 } |
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313 |
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314 ngx_free(dt->elts); |
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315 } |
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316 |
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317 |
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318 static ngx_int_t |
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319 ngx_http_v3_evict(ngx_connection_t *c, size_t need) |
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320 { |
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321 size_t size, target; |
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322 ngx_uint_t n; |
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323 ngx_http_v3_header_t *h; |
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324 ngx_http_v3_connection_t *h3c; |
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325 ngx_http_v3_dynamic_table_t *dt; |
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326 |
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327 h3c = c->quic->parent->data; |
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328 dt = &h3c->table; |
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329 |
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330 if (need > dt->capacity) { |
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331 ngx_log_error(NGX_LOG_ERR, c->log, 0, |
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332 "not enough dynamic table capacity"); |
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333 return NGX_ERROR; |
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334 } |
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335 |
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336 target = dt->capacity - need; |
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337 n = 0; |
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338 |
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339 while (dt->size > target) { |
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340 h = dt->elts[n++]; |
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341 size = ngx_http_v3_table_entry_size(&h->name, &h->value); |
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342 |
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343 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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344 "http3 evict [%ui] \"%V\":\"%V\" size:%uz", |
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345 dt->base, &h->name, &h->value, size); |
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346 |
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347 ngx_free(h); |
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348 dt->size -= size; |
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349 } |
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350 |
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351 if (n) { |
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352 dt->nelts -= n; |
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353 dt->base += n; |
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354 ngx_memmove(dt->elts, &dt->elts[n], dt->nelts * sizeof(void *)); |
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355 } |
8215 | 356 |
357 return NGX_OK; | |
358 } | |
359 | |
360 | |
361 ngx_int_t | |
362 ngx_http_v3_duplicate(ngx_connection_t *c, ngx_uint_t index) | |
363 { | |
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364 ngx_str_t name, value; |
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365 ngx_http_v3_connection_t *h3c; |
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366 ngx_http_v3_dynamic_table_t *dt; |
8215 | 367 |
368 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 duplicate %ui", index); | |
369 | |
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370 h3c = c->quic->parent->data; |
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371 dt = &h3c->table; |
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372 |
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373 if (dt->base + dt->nelts <= index) { |
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374 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
8215 | 375 } |
376 | |
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377 index = dt->base + dt->nelts - 1 - index; |
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378 |
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379 if (ngx_http_v3_lookup(c, index, &name, &value) != NGX_OK) { |
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380 return NGX_HTTP_V3_ERR_ENCODER_STREAM_ERROR; |
8215 | 381 } |
382 | |
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383 return ngx_http_v3_insert(c, &name, &value); |
8215 | 384 } |
385 | |
386 | |
387 ngx_int_t | |
388 ngx_http_v3_ack_header(ngx_connection_t *c, ngx_uint_t stream_id) | |
389 { | |
390 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
391 "http3 ack header %ui", stream_id); | |
392 | |
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393 /* we do not use dynamic tables */ |
8215 | 394 |
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395 return NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR; |
8215 | 396 } |
397 | |
398 | |
399 ngx_int_t | |
400 ngx_http_v3_cancel_stream(ngx_connection_t *c, ngx_uint_t stream_id) | |
401 { | |
402 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
403 "http3 cancel stream %ui", stream_id); | |
404 | |
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405 /* we do not use dynamic tables */ |
8215 | 406 |
407 return NGX_OK; | |
408 } | |
409 | |
410 | |
411 ngx_int_t | |
412 ngx_http_v3_inc_insert_count(ngx_connection_t *c, ngx_uint_t inc) | |
413 { | |
414 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
415 "http3 increment insert count %ui", inc); | |
416 | |
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417 /* we do not use dynamic tables */ |
8215 | 418 |
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419 return NGX_HTTP_V3_ERR_DECODER_STREAM_ERROR; |
8215 | 420 } |
421 | |
422 | |
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423 ngx_int_t |
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424 ngx_http_v3_lookup_static(ngx_connection_t *c, ngx_uint_t index, |
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425 ngx_str_t *name, ngx_str_t *value) |
8215 | 426 { |
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427 ngx_uint_t nelts; |
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428 ngx_http_v3_header_t *h; |
8215 | 429 |
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430 nelts = sizeof(ngx_http_v3_static_table) |
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431 / sizeof(ngx_http_v3_static_table[0]); |
8215 | 432 |
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433 if (index >= nelts) { |
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434 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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435 "http3 static[%ui] lookup out of bounds: %ui", |
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436 index, nelts); |
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437 return NGX_ERROR; |
8215 | 438 } |
439 | |
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440 h = &ngx_http_v3_static_table[index]; |
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441 |
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442 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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443 "http3 static[%ui] lookup \"%V\":\"%V\"", |
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444 index, &h->name, &h->value); |
8215 | 445 |
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446 if (name) { |
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447 *name = h->name; |
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448 } |
8215 | 449 |
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450 if (value) { |
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451 *value = h->value; |
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452 } |
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453 |
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454 return NGX_OK; |
8215 | 455 } |
456 | |
457 | |
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458 ngx_int_t |
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459 ngx_http_v3_lookup(ngx_connection_t *c, ngx_uint_t index, ngx_str_t *name, |
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460 ngx_str_t *value) |
8215 | 461 { |
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462 ngx_http_v3_header_t *h; |
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463 ngx_http_v3_connection_t *h3c; |
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464 ngx_http_v3_dynamic_table_t *dt; |
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465 |
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466 h3c = c->quic->parent->data; |
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467 dt = &h3c->table; |
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468 |
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469 if (index < dt->base || index - dt->base >= dt->nelts) { |
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470 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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471 "http3 dynamic[%ui] lookup out of bounds: [%ui,%ui]", |
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472 index, dt->base, dt->base + dt->nelts); |
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473 return NGX_ERROR; |
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474 } |
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475 |
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476 h = dt->elts[index - dt->base]; |
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477 |
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478 ngx_log_debug3(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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479 "http3 dynamic[%ui] lookup \"%V\":\"%V\"", |
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480 index, &h->name, &h->value); |
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481 |
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482 if (name) { |
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483 *name = h->name; |
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484 } |
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485 |
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486 if (value) { |
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487 *value = h->value; |
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488 } |
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489 |
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490 return NGX_OK; |
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491 } |
8215 | 492 |
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493 |
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494 ngx_int_t |
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495 ngx_http_v3_decode_insert_count(ngx_connection_t *c, ngx_uint_t *insert_count) |
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496 { |
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497 ngx_uint_t max_entries, full_range, max_value, |
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498 max_wrapped, req_insert_count; |
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499 ngx_http_v3_srv_conf_t *h3scf; |
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500 ngx_http_v3_connection_t *h3c; |
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501 ngx_http_v3_dynamic_table_t *dt; |
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502 |
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503 /* QPACK 4.5.1.1. Required Insert Count */ |
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504 |
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505 if (*insert_count == 0) { |
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506 return NGX_OK; |
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507 } |
8215 | 508 |
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509 h3c = c->quic->parent->data; |
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510 dt = &h3c->table; |
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511 |
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512 h3scf = ngx_http_get_module_srv_conf(h3c->hc.conf_ctx, ngx_http_v3_module); |
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513 |
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514 max_entries = h3scf->max_table_capacity / 32; |
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515 full_range = 2 * max_entries; |
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516 |
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517 if (*insert_count > full_range) { |
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518 return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; |
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519 } |
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520 |
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521 max_value = dt->base + dt->nelts + max_entries; |
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522 max_wrapped = (max_value / full_range) * full_range; |
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523 req_insert_count = max_wrapped + *insert_count - 1; |
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524 |
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525 if (req_insert_count > max_value) { |
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526 if (req_insert_count <= full_range) { |
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527 return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; |
8215 | 528 } |
529 | |
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530 req_insert_count -= full_range; |
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531 } |
8215 | 532 |
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533 if (req_insert_count == 0) { |
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534 return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; |
8215 | 535 } |
536 | |
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537 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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538 "http3 decode insert_count %ui -> %ui", |
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539 *insert_count, req_insert_count); |
8215 | 540 |
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541 *insert_count = req_insert_count; |
8215 | 542 |
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543 return NGX_OK; |
8215 | 544 } |
545 | |
546 | |
547 ngx_int_t | |
548 ngx_http_v3_check_insert_count(ngx_connection_t *c, ngx_uint_t insert_count) | |
549 { | |
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550 size_t n; |
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551 ngx_connection_t *pc; |
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552 ngx_pool_cleanup_t *cln; |
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553 ngx_http_v3_block_t *block; |
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554 ngx_http_v3_srv_conf_t *h3scf; |
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555 ngx_http_v3_connection_t *h3c; |
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556 ngx_http_v3_dynamic_table_t *dt; |
8215 | 557 |
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558 pc = c->quic->parent; |
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559 h3c = pc->data; |
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560 dt = &h3c->table; |
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561 |
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562 n = dt->base + dt->nelts; |
8215 | 563 |
564 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, | |
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565 "http3 check insert count req:%ui, have:%ui", |
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566 insert_count, n); |
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567 |
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568 if (n >= insert_count) { |
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569 return NGX_OK; |
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570 } |
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571 |
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572 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http3 block stream"); |
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573 |
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574 block = NULL; |
8215 | 575 |
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576 for (cln = c->pool->cleanup; cln; cln = cln->next) { |
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577 if (cln->handler == ngx_http_v3_unblock) { |
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578 block = cln->data; |
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579 break; |
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580 } |
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581 } |
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582 |
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583 if (block == NULL) { |
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584 cln = ngx_pool_cleanup_add(c->pool, sizeof(ngx_http_v3_block_t)); |
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585 if (cln == NULL) { |
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586 return NGX_ERROR; |
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587 } |
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588 |
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589 cln->handler = ngx_http_v3_unblock; |
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590 |
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591 block = cln->data; |
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592 block->queue.prev = NULL; |
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593 block->connection = c; |
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594 block->nblocked = &h3c->nblocked; |
8215 | 595 } |
596 | |
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597 if (block->queue.prev == NULL) { |
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598 h3scf = ngx_http_get_module_srv_conf(h3c->hc.conf_ctx, |
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599 ngx_http_v3_module); |
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600 |
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601 if (h3c->nblocked == h3scf->max_blocked_streams) { |
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602 ngx_log_error(NGX_LOG_INFO, c->log, 0, |
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603 "client exceeded http3_max_blocked_streams limit"); |
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604 return NGX_HTTP_V3_ERR_DECOMPRESSION_FAILED; |
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605 } |
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606 |
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607 h3c->nblocked++; |
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608 ngx_queue_insert_tail(&h3c->blocked, &block->queue); |
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609 } |
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610 |
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611 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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612 "http3 blocked:%ui", h3c->nblocked); |
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613 |
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614 return NGX_BUSY; |
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615 } |
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616 |
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617 |
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618 static void |
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619 ngx_http_v3_unblock(void *data) |
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620 { |
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621 ngx_http_v3_block_t *block = data; |
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622 |
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623 if (block->queue.prev) { |
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624 ngx_queue_remove(&block->queue); |
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625 block->queue.prev = NULL; |
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626 (*block->nblocked)--; |
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627 } |
8215 | 628 } |
629 | |
630 | |
631 static ngx_int_t | |
632 ngx_http_v3_new_header(ngx_connection_t *c) | |
633 { | |
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634 ngx_queue_t *q; |
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635 ngx_connection_t *bc; |
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636 ngx_http_v3_block_t *block; |
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637 ngx_http_v3_connection_t *h3c; |
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638 |
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639 h3c = c->quic->parent->data; |
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640 |
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641 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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642 "http3 new dynamic header, blocked:%ui", h3c->nblocked); |
8215 | 643 |
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644 while (!ngx_queue_empty(&h3c->blocked)) { |
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645 q = ngx_queue_head(&h3c->blocked); |
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646 block = (ngx_http_v3_block_t *) q; |
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647 bc = block->connection; |
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648 |
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649 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, bc->log, 0, "http3 unblock stream"); |
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650 |
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651 ngx_http_v3_unblock(block); |
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652 ngx_post_event(bc->read, &ngx_posted_events); |
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653 } |
8215 | 654 |
655 return NGX_OK; | |
656 } | |
8226
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657 |
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658 |
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659 ngx_int_t |
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660 ngx_http_v3_set_param(ngx_connection_t *c, uint64_t id, uint64_t value) |
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661 { |
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662 switch (id) { |
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663 |
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664 case NGX_HTTP_V3_PARAM_MAX_TABLE_CAPACITY: |
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665 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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666 "http3 param QPACK_MAX_TABLE_CAPACITY:%uL", value); |
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667 break; |
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668 |
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669 case NGX_HTTP_V3_PARAM_MAX_HEADER_LIST_SIZE: |
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670 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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671 "http3 param SETTINGS_MAX_HEADER_LIST_SIZE:%uL", value); |
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672 break; |
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673 |
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674 case NGX_HTTP_V3_PARAM_BLOCKED_STREAMS: |
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675 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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676 "http3 param QPACK_BLOCKED_STREAMS:%uL", value); |
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677 break; |
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678 |
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679 default: |
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680 |
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681 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, |
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682 "http3 param #%uL:%uL", id, value); |
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683 } |
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684 |
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685 return NGX_OK; |
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686 } |