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annotate src/http/v2/ngx_http_v2_table.c @ 6640:e78eca6bfaf0

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HTTP/2: fixed send timer handling. Checking for return value of c->send_chain() isn't sufficient since there are data can be left in the SSL buffer. Now the wew->ready flag is used instead. In particular, this fixed a connection leak in cases when all streams were closed, but there's still some data to be sent in the SSL buffer and the client forgot about the connection.
author Valentin Bartenev <vbart@nginx.com>
date Tue, 19 Jul 2016 20:31:09 +0300
parents 257b51c37c5a
children d4b031cf32cf
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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1
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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2 /*
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3 * Copyright (C) Nginx, Inc.
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4 * Copyright (C) Valentin V. Bartenev
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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13 #define NGX_HTTP_V2_TABLE_SIZE 4096
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14
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15
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16 static ngx_int_t ngx_http_v2_table_account(ngx_http_v2_connection_t *h2c,
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17 size_t size);
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18
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19
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20 static ngx_http_v2_header_t ngx_http_v2_static_table[] = {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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21 { ngx_string(":authority"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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22 { ngx_string(":method"), ngx_string("GET") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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23 { ngx_string(":method"), ngx_string("POST") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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24 { ngx_string(":path"), ngx_string("/") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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25 { ngx_string(":path"), ngx_string("/index.html") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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26 { ngx_string(":scheme"), ngx_string("http") },
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27 { ngx_string(":scheme"), ngx_string("https") },
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28 { ngx_string(":status"), ngx_string("200") },
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29 { ngx_string(":status"), ngx_string("204") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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30 { ngx_string(":status"), ngx_string("206") },
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31 { ngx_string(":status"), ngx_string("304") },
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32 { ngx_string(":status"), ngx_string("400") },
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33 { ngx_string(":status"), ngx_string("404") },
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34 { ngx_string(":status"), ngx_string("500") },
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35 { ngx_string("accept-charset"), ngx_string("") },
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36 { ngx_string("accept-encoding"), ngx_string("gzip, deflate") },
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37 { ngx_string("accept-language"), ngx_string("") },
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38 { ngx_string("accept-ranges"), ngx_string("") },
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39 { ngx_string("accept"), ngx_string("") },
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40 { ngx_string("access-control-allow-origin"), ngx_string("") },
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41 { ngx_string("age"), ngx_string("") },
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42 { ngx_string("allow"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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43 { ngx_string("authorization"), ngx_string("") },
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44 { ngx_string("cache-control"), ngx_string("") },
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45 { ngx_string("content-disposition"), ngx_string("") },
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46 { ngx_string("content-encoding"), ngx_string("") },
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47 { ngx_string("content-language"), ngx_string("") },
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48 { ngx_string("content-length"), ngx_string("") },
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49 { ngx_string("content-location"), ngx_string("") },
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50 { ngx_string("content-range"), ngx_string("") },
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51 { ngx_string("content-type"), ngx_string("") },
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52 { ngx_string("cookie"), ngx_string("") },
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53 { ngx_string("date"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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54 { ngx_string("etag"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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55 { ngx_string("expect"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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56 { ngx_string("expires"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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57 { ngx_string("from"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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58 { ngx_string("host"), ngx_string("") },
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59 { ngx_string("if-match"), ngx_string("") },
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60 { ngx_string("if-modified-since"), ngx_string("") },
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61 { ngx_string("if-none-match"), ngx_string("") },
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62 { ngx_string("if-range"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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63 { ngx_string("if-unmodified-since"), ngx_string("") },
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64 { ngx_string("last-modified"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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65 { ngx_string("link"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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66 { ngx_string("location"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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67 { ngx_string("max-forwards"), ngx_string("") },
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68 { ngx_string("proxy-authenticate"), ngx_string("") },
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69 { ngx_string("proxy-authorization"), ngx_string("") },
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70 { ngx_string("range"), ngx_string("") },
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71 { ngx_string("referer"), ngx_string("") },
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72 { ngx_string("refresh"), ngx_string("") },
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73 { ngx_string("retry-after"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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74 { ngx_string("server"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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75 { ngx_string("set-cookie"), ngx_string("") },
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76 { ngx_string("strict-transport-security"), ngx_string("") },
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77 { ngx_string("transfer-encoding"), ngx_string("") },
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78 { ngx_string("user-agent"), ngx_string("") },
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79 { ngx_string("vary"), ngx_string("") },
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80 { ngx_string("via"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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81 { ngx_string("www-authenticate"), ngx_string("") },
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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82 };
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83
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84 #define NGX_HTTP_V2_STATIC_TABLE_ENTRIES \
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85 (sizeof(ngx_http_v2_static_table) \
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86 / sizeof(ngx_http_v2_header_t))
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87
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88
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89 ngx_int_t
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90 ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c, ngx_uint_t index,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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91 ngx_uint_t name_only)
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92 {
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93 u_char *p;
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94 size_t rest;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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95 ngx_http_v2_header_t *entry;
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96
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97 if (index == 0) {
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98 ngx_log_error(NGX_LOG_INFO, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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99 "client sent invalid hpack table index 0");
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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100 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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101 }
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102
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103 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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104 "http2 get indexed %s: %ui",
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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105 name_only ? "header" : "header name", index);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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106
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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107 index--;
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108
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109 if (index < NGX_HTTP_V2_STATIC_TABLE_ENTRIES) {
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110 h2c->state.header = ngx_http_v2_static_table[index];
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111 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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112 }
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113
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114 index -= NGX_HTTP_V2_STATIC_TABLE_ENTRIES;
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115
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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116 if (index < h2c->hpack.added - h2c->hpack.deleted) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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117 index = (h2c->hpack.added - index - 1) % h2c->hpack.allocated;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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118 entry = h2c->hpack.entries[index];
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119
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120 p = ngx_pnalloc(h2c->state.pool, entry->name.len + 1);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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121 if (p == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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122 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
123 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
124
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
125 h2c->state.header.name.len = entry->name.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
126 h2c->state.header.name.data = p;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
127
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
128 rest = h2c->hpack.storage + NGX_HTTP_V2_TABLE_SIZE - entry->name.data;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
129
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
130 if (entry->name.len > rest) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
131 p = ngx_cpymem(p, entry->name.data, rest);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
132 p = ngx_cpymem(p, h2c->hpack.storage, entry->name.len - rest);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
133
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
134 } else {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
135 p = ngx_cpymem(p, entry->name.data, entry->name.len);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
136 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
137
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
138 *p = '\0';
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
139
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
140 if (name_only) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
141 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
142 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
143
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
144 p = ngx_pnalloc(h2c->state.pool, entry->value.len + 1);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
145 if (p == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
146 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
147 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
148
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
149 h2c->state.header.value.len = entry->value.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
150 h2c->state.header.value.data = p;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
151
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
152 rest = h2c->hpack.storage + NGX_HTTP_V2_TABLE_SIZE - entry->value.data;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
153
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
154 if (entry->value.len > rest) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
155 p = ngx_cpymem(p, entry->value.data, rest);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
156 p = ngx_cpymem(p, h2c->hpack.storage, entry->value.len - rest);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
157
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
158 } else {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
159 p = ngx_cpymem(p, entry->value.data, entry->value.len);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
160 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
161
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
162 *p = '\0';
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
163
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
164 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
165 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
166
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
167 ngx_log_error(NGX_LOG_INFO, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
168 "client sent out of bound hpack table index: %ui", index);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
169
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
170 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
171 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
172
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
173
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
174 ngx_int_t
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
175 ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
176 ngx_http_v2_header_t *header)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
177 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
178 size_t avail;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
179 ngx_uint_t index;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
180 ngx_http_v2_header_t *entry, **entries;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
181
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
182 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
183 "http2 add header to hpack table: \"%V: %V\"",
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
184 &header->name, &header->value);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
185
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
186 if (h2c->hpack.entries == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
187 h2c->hpack.allocated = 64;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
188 h2c->hpack.size = NGX_HTTP_V2_TABLE_SIZE;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
189 h2c->hpack.free = NGX_HTTP_V2_TABLE_SIZE;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
190
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
191 h2c->hpack.entries = ngx_palloc(h2c->connection->pool,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
192 sizeof(ngx_http_v2_header_t *)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
193 * h2c->hpack.allocated);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
194 if (h2c->hpack.entries == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
195 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
196 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
197
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
198 h2c->hpack.storage = ngx_palloc(h2c->connection->pool,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
199 h2c->hpack.free);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
200 if (h2c->hpack.storage == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
201 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
202 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
203
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
204 h2c->hpack.pos = h2c->hpack.storage;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
205 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
206
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
207 if (ngx_http_v2_table_account(h2c, header->name.len + header->value.len)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
208 != NGX_OK)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
209 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
210 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
211 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
212
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
213 if (h2c->hpack.reused == h2c->hpack.deleted) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
214 entry = ngx_palloc(h2c->connection->pool, sizeof(ngx_http_v2_header_t));
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
215 if (entry == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
216 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
217 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
218
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
219 } else {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
220 entry = h2c->hpack.entries[h2c->hpack.reused++ % h2c->hpack.allocated];
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
221 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
222
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
223 avail = h2c->hpack.storage + NGX_HTTP_V2_TABLE_SIZE - h2c->hpack.pos;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
224
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
225 entry->name.len = header->name.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
226 entry->name.data = h2c->hpack.pos;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
227
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
228 if (avail >= header->name.len) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
229 h2c->hpack.pos = ngx_cpymem(h2c->hpack.pos, header->name.data,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
230 header->name.len);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
231 } else {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
232 ngx_memcpy(h2c->hpack.pos, header->name.data, avail);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
233 h2c->hpack.pos = ngx_cpymem(h2c->hpack.storage,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
234 header->name.data + avail,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
235 header->name.len - avail);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
236 avail = NGX_HTTP_V2_TABLE_SIZE;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
237 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
238
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
239 avail -= header->name.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
240
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
241 entry->value.len = header->value.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
242 entry->value.data = h2c->hpack.pos;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
243
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
244 if (avail >= header->value.len) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
245 h2c->hpack.pos = ngx_cpymem(h2c->hpack.pos, header->value.data,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
246 header->value.len);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
247 } else {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
248 ngx_memcpy(h2c->hpack.pos, header->value.data, avail);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
249 h2c->hpack.pos = ngx_cpymem(h2c->hpack.storage,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
250 header->value.data + avail,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
251 header->value.len - avail);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
252 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
253
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
254 if (h2c->hpack.allocated == h2c->hpack.added - h2c->hpack.deleted) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
255
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
256 entries = ngx_palloc(h2c->connection->pool,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
257 sizeof(ngx_http_v2_header_t *)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
258 * (h2c->hpack.allocated + 64));
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
259 if (entries == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
260 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
261 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
262
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
263 index = h2c->hpack.deleted % h2c->hpack.allocated;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
264
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
265 ngx_memcpy(entries, &h2c->hpack.entries[index],
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
266 (h2c->hpack.allocated - index)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
267 * sizeof(ngx_http_v2_header_t *));
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
268
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
269 ngx_memcpy(&entries[h2c->hpack.allocated - index], h2c->hpack.entries,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
270 index * sizeof(ngx_http_v2_header_t *));
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
271
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
272 (void) ngx_pfree(h2c->connection->pool, h2c->hpack.entries);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
273
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
274 h2c->hpack.entries = entries;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
275
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
276 h2c->hpack.added = h2c->hpack.allocated;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
277 h2c->hpack.deleted = 0;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
278 h2c->hpack.reused = 0;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
279 h2c->hpack.allocated += 64;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
280 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
281
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
282 h2c->hpack.entries[h2c->hpack.added++ % h2c->hpack.allocated] = entry;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
283
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
284 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
285 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
286
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
287
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
288 static ngx_int_t
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
289 ngx_http_v2_table_account(ngx_http_v2_connection_t *h2c, size_t size)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
290 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
291 ngx_http_v2_header_t *entry;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
292
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
293 size += 32;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
294
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
295 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
296 "http2 hpack table account: %uz free:%uz",
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
297 size, h2c->hpack.free);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
298
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
299 if (size <= h2c->hpack.free) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
300 h2c->hpack.free -= size;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
301 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
302 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
303
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
304 if (size > h2c->hpack.size) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
305 h2c->hpack.deleted = h2c->hpack.added;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
306 h2c->hpack.free = h2c->hpack.size;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
307 return NGX_DECLINED;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
308 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
309
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
310 do {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
311 entry = h2c->hpack.entries[h2c->hpack.deleted++ % h2c->hpack.allocated];
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
312 h2c->hpack.free += 32 + entry->name.len + entry->value.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
313 } while (size > h2c->hpack.free);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
314
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
315 h2c->hpack.free -= size;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
316
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
317 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
318 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
319
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
320
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
321 ngx_int_t
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
322 ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
323 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
324 ssize_t needed;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
325 ngx_http_v2_header_t *entry;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
326
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
327 if (size > NGX_HTTP_V2_TABLE_SIZE) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
328 ngx_log_error(NGX_LOG_INFO, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
329 "client sent invalid table size update: %uz", size);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
330
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
331 return NGX_ERROR;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
332 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
333
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
334 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, h2c->connection->log, 0,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
335 "http2 new hpack table size: %uz was:%uz",
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
336 size, h2c->hpack.size);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
337
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
338 needed = h2c->hpack.size - size;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
339
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
340 while (needed > (ssize_t) h2c->hpack.free) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
341 entry = h2c->hpack.entries[h2c->hpack.deleted++ % h2c->hpack.allocated];
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
342 h2c->hpack.free += 32 + entry->name.len + entry->value.len;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
343 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
344
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
345 h2c->hpack.size = size;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
346 h2c->hpack.free -= needed;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
347
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
348 return NGX_OK;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
349 }