Mercurial > hg > nginx-quic
annotate src/http/v2/ngx_http_v2.h @ 6984:201038680680
Sub filter: restored ngx_http_set_ctx() at the proper place.
Previously, ngx_http_sub_header_filter() could fail with a partially
initialized context, later accessed in ngx_http_sub_body_filter()
if called from the perl content handler.
The issue had appeared in 2c045e5b8291 (1.9.4).
A better fix would be to handle ngx_http_send_header() errors in
the perl module, though this doesn't seem to be easy enough.
author | Sergey Kandaurov <pluknet@nginx.com> |
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date | Tue, 18 Apr 2017 19:55:23 +0300 |
parents | 28dc369899ea |
children | 2c4dbcd6f2e4 |
rev | line source |
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1 /* |
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2 * Copyright (C) Nginx, Inc. |
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3 * Copyright (C) Valentin V. Bartenev |
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4 */ |
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5 |
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6 |
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7 #ifndef _NGX_HTTP_V2_H_INCLUDED_ |
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8 #define _NGX_HTTP_V2_H_INCLUDED_ |
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9 |
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10 |
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11 #include <ngx_config.h> |
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12 #include <ngx_core.h> |
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13 #include <ngx_http.h> |
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14 |
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15 |
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16 #define NGX_HTTP_V2_ALPN_ADVERTISE "\x02h2" |
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17 #define NGX_HTTP_V2_NPN_ADVERTISE NGX_HTTP_V2_ALPN_ADVERTISE |
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18 |
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19 #define NGX_HTTP_V2_STATE_BUFFER_SIZE 16 |
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20 |
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21 #define NGX_HTTP_V2_MAX_FRAME_SIZE ((1 << 24) - 1) |
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22 |
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23 #define NGX_HTTP_V2_INT_OCTETS 4 |
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24 #define NGX_HTTP_V2_MAX_FIELD \ |
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25 (127 + (1 << (NGX_HTTP_V2_INT_OCTETS - 1) * 7) - 1) |
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26 |
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27 #define NGX_HTTP_V2_FRAME_HEADER_SIZE 9 |
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28 |
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29 /* frame types */ |
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30 #define NGX_HTTP_V2_DATA_FRAME 0x0 |
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31 #define NGX_HTTP_V2_HEADERS_FRAME 0x1 |
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32 #define NGX_HTTP_V2_PRIORITY_FRAME 0x2 |
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33 #define NGX_HTTP_V2_RST_STREAM_FRAME 0x3 |
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34 #define NGX_HTTP_V2_SETTINGS_FRAME 0x4 |
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35 #define NGX_HTTP_V2_PUSH_PROMISE_FRAME 0x5 |
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36 #define NGX_HTTP_V2_PING_FRAME 0x6 |
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37 #define NGX_HTTP_V2_GOAWAY_FRAME 0x7 |
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38 #define NGX_HTTP_V2_WINDOW_UPDATE_FRAME 0x8 |
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39 #define NGX_HTTP_V2_CONTINUATION_FRAME 0x9 |
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40 |
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41 /* frame flags */ |
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42 #define NGX_HTTP_V2_NO_FLAG 0x00 |
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43 #define NGX_HTTP_V2_ACK_FLAG 0x01 |
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44 #define NGX_HTTP_V2_END_STREAM_FLAG 0x01 |
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45 #define NGX_HTTP_V2_END_HEADERS_FLAG 0x04 |
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46 #define NGX_HTTP_V2_PADDED_FLAG 0x08 |
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47 #define NGX_HTTP_V2_PRIORITY_FLAG 0x20 |
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48 |
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49 #define NGX_HTTP_V2_MAX_WINDOW ((1U << 31) - 1) |
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50 #define NGX_HTTP_V2_DEFAULT_WINDOW 65535 |
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51 |
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52 |
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53 typedef struct ngx_http_v2_connection_s ngx_http_v2_connection_t; |
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54 typedef struct ngx_http_v2_node_s ngx_http_v2_node_t; |
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55 typedef struct ngx_http_v2_out_frame_s ngx_http_v2_out_frame_t; |
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56 |
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57 |
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58 typedef u_char *(*ngx_http_v2_handler_pt) (ngx_http_v2_connection_t *h2c, |
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59 u_char *pos, u_char *end); |
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60 |
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61 |
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62 typedef struct { |
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63 ngx_str_t name; |
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64 ngx_str_t value; |
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65 } ngx_http_v2_header_t; |
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66 |
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67 |
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68 typedef struct { |
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69 ngx_uint_t sid; |
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70 size_t length; |
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71 size_t padding; |
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72 unsigned flags:8; |
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73 |
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74 unsigned incomplete:1; |
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75 unsigned keep_pool:1; |
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76 |
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77 /* HPACK */ |
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78 unsigned parse_name:1; |
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79 unsigned parse_value:1; |
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80 unsigned index:1; |
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81 ngx_http_v2_header_t header; |
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82 size_t header_limit; |
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83 u_char field_state; |
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84 u_char *field_start; |
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85 u_char *field_end; |
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86 size_t field_rest; |
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87 ngx_pool_t *pool; |
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88 |
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89 ngx_http_v2_stream_t *stream; |
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90 |
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91 u_char buffer[NGX_HTTP_V2_STATE_BUFFER_SIZE]; |
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92 size_t buffer_used; |
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93 ngx_http_v2_handler_pt handler; |
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94 } ngx_http_v2_state_t; |
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95 |
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96 |
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97 |
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98 typedef struct { |
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99 ngx_http_v2_header_t **entries; |
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100 |
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101 ngx_uint_t added; |
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102 ngx_uint_t deleted; |
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103 ngx_uint_t reused; |
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104 ngx_uint_t allocated; |
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105 |
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106 size_t size; |
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107 size_t free; |
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108 u_char *storage; |
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109 u_char *pos; |
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110 } ngx_http_v2_hpack_t; |
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111 |
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112 |
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113 struct ngx_http_v2_connection_s { |
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114 ngx_connection_t *connection; |
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115 ngx_http_connection_t *http_connection; |
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116 |
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117 ngx_uint_t processing; |
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118 |
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119 size_t send_window; |
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120 size_t recv_window; |
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121 size_t init_window; |
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122 |
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123 size_t frame_size; |
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124 |
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125 ngx_queue_t waiting; |
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126 |
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127 ngx_http_v2_state_t state; |
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128 |
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129 ngx_http_v2_hpack_t hpack; |
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130 |
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131 ngx_pool_t *pool; |
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132 |
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133 ngx_http_v2_out_frame_t *free_frames; |
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134 ngx_connection_t *free_fake_connections; |
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135 |
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136 ngx_http_v2_node_t **streams_index; |
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137 |
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138 ngx_http_v2_out_frame_t *last_out; |
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139 |
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140 ngx_queue_t dependencies; |
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141 ngx_queue_t closed; |
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142 |
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143 ngx_uint_t last_sid; |
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144 |
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145 unsigned closed_nodes:8; |
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146 unsigned settings_ack:1; |
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147 unsigned blocked:1; |
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HTTP/2: graceful shutdown of active connections (closes #1106).
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148 unsigned goaway:1; |
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149 }; |
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150 |
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151 |
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152 struct ngx_http_v2_node_s { |
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153 ngx_uint_t id; |
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154 ngx_http_v2_node_t *index; |
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155 ngx_http_v2_node_t *parent; |
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156 ngx_queue_t queue; |
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157 ngx_queue_t children; |
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158 ngx_queue_t reuse; |
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159 ngx_uint_t rank; |
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The HTTP/2 implementation (RFC 7240, 7241).
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160 ngx_uint_t weight; |
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The HTTP/2 implementation (RFC 7240, 7241).
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161 double rel_weight; |
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162 ngx_http_v2_stream_t *stream; |
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163 }; |
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164 |
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165 |
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166 struct ngx_http_v2_stream_s { |
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167 ngx_http_request_t *request; |
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168 ngx_http_v2_connection_t *connection; |
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169 ngx_http_v2_node_t *node; |
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170 |
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171 ngx_uint_t queued; |
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172 |
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173 /* |
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174 * A change to SETTINGS_INITIAL_WINDOW_SIZE could cause the |
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The HTTP/2 implementation (RFC 7240, 7241).
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175 * send_window to become negative, hence it's signed. |
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176 */ |
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The HTTP/2 implementation (RFC 7240, 7241).
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177 ssize_t send_window; |
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178 size_t recv_window; |
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179 |
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180 ngx_buf_t *preread; |
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181 |
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182 ngx_http_v2_out_frame_t *free_frames; |
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183 ngx_chain_t *free_frame_headers; |
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184 ngx_chain_t *free_bufs; |
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185 |
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186 ngx_queue_t queue; |
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187 |
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188 ngx_array_t *cookies; |
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189 |
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190 size_t header_limit; |
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191 |
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192 ngx_pool_t *pool; |
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193 |
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194 unsigned waiting:1; |
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195 unsigned blocked:1; |
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196 unsigned exhausted:1; |
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197 unsigned in_closed:1; |
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198 unsigned out_closed:1; |
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HTTP/2: sending RST_STREAM with NO_ERROR to discard request body.
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199 unsigned rst_sent:1; |
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200 unsigned no_flow_control:1; |
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201 unsigned skip_data:1; |
6246
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202 }; |
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203 |
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204 |
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205 struct ngx_http_v2_out_frame_s { |
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206 ngx_http_v2_out_frame_t *next; |
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207 ngx_chain_t *first; |
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208 ngx_chain_t *last; |
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209 ngx_int_t (*handler)(ngx_http_v2_connection_t *h2c, |
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210 ngx_http_v2_out_frame_t *frame); |
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211 |
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The HTTP/2 implementation (RFC 7240, 7241).
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212 ngx_http_v2_stream_t *stream; |
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The HTTP/2 implementation (RFC 7240, 7241).
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213 size_t length; |
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214 |
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|
215 unsigned blocked:1; |
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|
216 unsigned fin:1; |
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|
217 }; |
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|
218 |
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219 |
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220 static ngx_inline void |
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The HTTP/2 implementation (RFC 7240, 7241).
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221 ngx_http_v2_queue_frame(ngx_http_v2_connection_t *h2c, |
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222 ngx_http_v2_out_frame_t *frame) |
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223 { |
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|
224 ngx_http_v2_out_frame_t **out; |
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225 |
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226 for (out = &h2c->last_out; *out; out = &(*out)->next) { |
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227 |
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|
228 if ((*out)->blocked || (*out)->stream == NULL) { |
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The HTTP/2 implementation (RFC 7240, 7241).
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229 break; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
230 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
231 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
232 if ((*out)->stream->node->rank < frame->stream->node->rank |
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The HTTP/2 implementation (RFC 7240, 7241).
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233 || ((*out)->stream->node->rank == frame->stream->node->rank |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
234 && (*out)->stream->node->rel_weight |
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235 >= frame->stream->node->rel_weight)) |
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236 { |
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237 break; |
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238 } |
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239 } |
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240 |
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241 frame->next = *out; |
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242 *out = frame; |
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243 } |
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244 |
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245 |
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246 static ngx_inline void |
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247 ngx_http_v2_queue_blocked_frame(ngx_http_v2_connection_t *h2c, |
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248 ngx_http_v2_out_frame_t *frame) |
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249 { |
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250 ngx_http_v2_out_frame_t **out; |
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251 |
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252 for (out = &h2c->last_out; *out; out = &(*out)->next) { |
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253 |
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254 if ((*out)->blocked || (*out)->stream == NULL) { |
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255 break; |
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256 } |
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257 } |
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258 |
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259 frame->next = *out; |
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260 *out = frame; |
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261 } |
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262 |
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263 |
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264 void ngx_http_v2_init(ngx_event_t *rev); |
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265 void ngx_http_v2_request_headers_init(void); |
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266 |
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267 ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r, |
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268 ngx_http_client_body_handler_pt post_handler); |
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269 ngx_int_t ngx_http_v2_read_unbuffered_request_body(ngx_http_request_t *r); |
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270 |
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271 void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc); |
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272 |
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273 ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c); |
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274 |
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275 |
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276 ngx_int_t ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c, |
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277 ngx_uint_t index, ngx_uint_t name_only); |
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278 ngx_int_t ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c, |
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279 ngx_http_v2_header_t *header); |
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280 ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size); |
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281 |
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282 |
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283 ngx_int_t ngx_http_v2_huff_decode(u_char *state, u_char *src, size_t len, |
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284 u_char **dst, ngx_uint_t last, ngx_log_t *log); |
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285 size_t ngx_http_v2_huff_encode(u_char *src, size_t len, u_char *dst, |
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286 ngx_uint_t lower); |
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287 |
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288 |
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289 #define ngx_http_v2_prefix(bits) ((1 << (bits)) - 1) |
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290 |
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291 |
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292 #if (NGX_HAVE_NONALIGNED) |
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293 |
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294 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p)) |
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295 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p)) |
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296 |
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297 #else |
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298 |
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299 #define ngx_http_v2_parse_uint16(p) ((p)[0] << 8 | (p)[1]) |
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300 #define ngx_http_v2_parse_uint32(p) \ |
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301 ((uint32_t) (p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3]) |
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302 |
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303 #endif |
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304 |
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305 #define ngx_http_v2_parse_length(p) ((p) >> 8) |
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306 #define ngx_http_v2_parse_type(p) ((p) & 0xff) |
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307 #define ngx_http_v2_parse_sid(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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308 #define ngx_http_v2_parse_window(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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309 |
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310 |
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311 #define ngx_http_v2_write_uint16_aligned(p, s) \ |
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312 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t)) |
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313 #define ngx_http_v2_write_uint32_aligned(p, s) \ |
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314 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t)) |
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315 |
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316 #if (NGX_HAVE_NONALIGNED) |
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317 |
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318 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned |
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319 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned |
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320 |
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321 #else |
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322 |
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323 #define ngx_http_v2_write_uint16(p, s) \ |
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324 ((p)[0] = (u_char) ((s) >> 8), \ |
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325 (p)[1] = (u_char) (s), \ |
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326 (p) + sizeof(uint16_t)) |
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327 |
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328 #define ngx_http_v2_write_uint32(p, s) \ |
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329 ((p)[0] = (u_char) ((s) >> 24), \ |
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330 (p)[1] = (u_char) ((s) >> 16), \ |
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331 (p)[2] = (u_char) ((s) >> 8), \ |
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332 (p)[3] = (u_char) (s), \ |
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333 (p) + sizeof(uint32_t)) |
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334 |
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335 #endif |
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336 |
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337 #define ngx_http_v2_write_len_and_type(p, l, t) \ |
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338 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t)) |
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339 |
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340 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32 |
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341 |
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342 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */ |