Mercurial > hg > nginx-quic
annotate src/http/ngx_http_spdy.h @ 6230:2a621245f4cf
Win32: MSVC 2015 compatibility.
Resolved warnings about declarations that hide previous local declarations.
Warnings about WSASocketA() being deprecated resolved by explicit use of
WSASocketW() instead of WSASocket(). When compiling without IPv6 support,
WinSock deprecated warnings are disabled to allow use of gethostbyname().
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 17 Aug 2015 18:09:17 +0300 |
parents | 34d460c5d186 |
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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_SPDY_H_INCLUDED_ |
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8 #define _NGX_HTTP_SPDY_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 #include <zlib.h> |
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16 |
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17 |
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18 #define NGX_SPDY_VERSION 3 |
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19 |
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20 #define NGX_SPDY_NPN_ADVERTISE "\x08spdy/3.1" |
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21 #define NGX_SPDY_NPN_NEGOTIATED "spdy/3.1" |
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22 |
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23 #define NGX_SPDY_STATE_BUFFER_SIZE 16 |
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24 |
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25 #define NGX_SPDY_CTL_BIT 1 |
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26 |
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27 #define NGX_SPDY_SYN_STREAM 1 |
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28 #define NGX_SPDY_SYN_REPLY 2 |
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29 #define NGX_SPDY_RST_STREAM 3 |
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30 #define NGX_SPDY_SETTINGS 4 |
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31 #define NGX_SPDY_PING 6 |
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32 #define NGX_SPDY_GOAWAY 7 |
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33 #define NGX_SPDY_HEADERS 8 |
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34 #define NGX_SPDY_WINDOW_UPDATE 9 |
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35 |
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36 #define NGX_SPDY_FRAME_HEADER_SIZE 8 |
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37 |
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38 #define NGX_SPDY_SID_SIZE 4 |
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39 #define NGX_SPDY_DELTA_SIZE 4 |
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40 |
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41 #define NGX_SPDY_SYN_STREAM_SIZE 10 |
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42 #define NGX_SPDY_SYN_REPLY_SIZE 4 |
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43 #define NGX_SPDY_RST_STREAM_SIZE 8 |
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44 #define NGX_SPDY_PING_SIZE 4 |
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45 #define NGX_SPDY_GOAWAY_SIZE 8 |
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46 #define NGX_SPDY_WINDOW_UPDATE_SIZE 8 |
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47 #define NGX_SPDY_NV_NUM_SIZE 4 |
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48 #define NGX_SPDY_NV_NLEN_SIZE 4 |
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49 #define NGX_SPDY_NV_VLEN_SIZE 4 |
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50 #define NGX_SPDY_SETTINGS_NUM_SIZE 4 |
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51 #define NGX_SPDY_SETTINGS_FID_SIZE 4 |
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52 #define NGX_SPDY_SETTINGS_VAL_SIZE 4 |
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53 |
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54 #define NGX_SPDY_SETTINGS_PAIR_SIZE \ |
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55 (NGX_SPDY_SETTINGS_FID_SIZE + NGX_SPDY_SETTINGS_VAL_SIZE) |
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56 |
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57 #define NGX_SPDY_HIGHEST_PRIORITY 0 |
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58 #define NGX_SPDY_LOWEST_PRIORITY 7 |
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59 |
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60 #define NGX_SPDY_FLAG_FIN 0x01 |
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61 #define NGX_SPDY_FLAG_UNIDIRECTIONAL 0x02 |
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62 #define NGX_SPDY_FLAG_CLEAR_SETTINGS 0x01 |
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63 |
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64 #define NGX_SPDY_MAX_FRAME_SIZE ((1 << 24) - 1) |
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65 |
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66 #define NGX_SPDY_DATA_DISCARD 1 |
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67 #define NGX_SPDY_DATA_ERROR 2 |
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68 #define NGX_SPDY_DATA_INTERNAL_ERROR 3 |
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69 |
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70 |
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71 typedef struct ngx_http_spdy_connection_s ngx_http_spdy_connection_t; |
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72 typedef struct ngx_http_spdy_out_frame_s ngx_http_spdy_out_frame_t; |
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73 |
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74 |
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75 typedef u_char *(*ngx_http_spdy_handler_pt) (ngx_http_spdy_connection_t *sc, |
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76 u_char *pos, u_char *end); |
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77 |
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78 struct ngx_http_spdy_connection_s { |
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79 ngx_connection_t *connection; |
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80 ngx_http_connection_t *http_connection; |
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81 |
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82 ngx_uint_t processing; |
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83 |
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84 size_t send_window; |
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85 size_t recv_window; |
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86 size_t init_window; |
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87 |
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88 ngx_queue_t waiting; |
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89 |
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90 u_char buffer[NGX_SPDY_STATE_BUFFER_SIZE]; |
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91 size_t buffer_used; |
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92 ngx_http_spdy_handler_pt handler; |
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93 |
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94 z_stream zstream_in; |
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95 z_stream zstream_out; |
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96 |
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97 ngx_pool_t *pool; |
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98 |
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99 ngx_http_spdy_out_frame_t *free_ctl_frames; |
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100 ngx_connection_t *free_fake_connections; |
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101 |
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102 ngx_http_spdy_stream_t **streams_index; |
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103 |
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104 ngx_http_spdy_out_frame_t *last_out; |
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105 |
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106 ngx_queue_t posted; |
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107 |
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108 ngx_http_spdy_stream_t *stream; |
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109 |
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110 ngx_uint_t entries; |
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111 size_t length; |
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112 u_char flags; |
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113 |
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114 ngx_uint_t last_sid; |
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115 |
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116 unsigned blocked:1; |
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117 unsigned incomplete:1; |
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118 }; |
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119 |
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120 |
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121 struct ngx_http_spdy_stream_s { |
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122 ngx_uint_t id; |
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123 ngx_http_request_t *request; |
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124 ngx_http_spdy_connection_t *connection; |
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125 ngx_http_spdy_stream_t *index; |
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126 |
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127 ngx_uint_t header_buffers; |
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128 ngx_uint_t queued; |
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129 |
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130 /* |
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131 * A change to SETTINGS_INITIAL_WINDOW_SIZE could cause the |
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132 * send_window to become negative, hence it's signed. |
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133 */ |
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134 ssize_t send_window; |
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135 size_t recv_window; |
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136 |
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137 ngx_http_spdy_out_frame_t *free_frames; |
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138 ngx_chain_t *free_data_headers; |
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139 ngx_chain_t *free_bufs; |
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140 |
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141 ngx_queue_t queue; |
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142 |
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143 unsigned priority:3; |
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144 unsigned handled:1; |
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145 unsigned blocked:1; |
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146 unsigned exhausted:1; |
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147 unsigned in_closed:1; |
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148 unsigned out_closed:1; |
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149 unsigned skip_data:2; |
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150 }; |
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151 |
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152 |
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153 struct ngx_http_spdy_out_frame_s { |
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154 ngx_http_spdy_out_frame_t *next; |
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155 ngx_chain_t *first; |
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156 ngx_chain_t *last; |
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157 ngx_int_t (*handler)(ngx_http_spdy_connection_t *sc, |
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158 ngx_http_spdy_out_frame_t *frame); |
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159 |
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160 ngx_http_spdy_stream_t *stream; |
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161 size_t length; |
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162 |
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163 ngx_uint_t priority; |
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164 unsigned blocked:1; |
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165 unsigned fin:1; |
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166 }; |
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167 |
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168 |
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169 static ngx_inline void |
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170 ngx_http_spdy_queue_frame(ngx_http_spdy_connection_t *sc, |
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171 ngx_http_spdy_out_frame_t *frame) |
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172 { |
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173 ngx_http_spdy_out_frame_t **out; |
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174 |
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175 for (out = &sc->last_out; *out; out = &(*out)->next) |
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176 { |
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177 /* |
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178 * NB: higher values represent lower priorities. |
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179 */ |
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180 if (frame->priority >= (*out)->priority) { |
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181 break; |
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182 } |
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183 } |
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184 |
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185 frame->next = *out; |
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186 *out = frame; |
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187 } |
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188 |
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189 |
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190 static ngx_inline void |
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191 ngx_http_spdy_queue_blocked_frame(ngx_http_spdy_connection_t *sc, |
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192 ngx_http_spdy_out_frame_t *frame) |
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193 { |
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194 ngx_http_spdy_out_frame_t **out; |
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195 |
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196 for (out = &sc->last_out; *out; out = &(*out)->next) |
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197 { |
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198 if ((*out)->blocked) { |
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199 break; |
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200 } |
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201 } |
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202 |
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203 frame->next = *out; |
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204 *out = frame; |
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205 } |
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206 |
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207 |
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208 void ngx_http_spdy_init(ngx_event_t *rev); |
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209 void ngx_http_spdy_request_headers_init(void); |
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210 |
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211 ngx_int_t ngx_http_spdy_read_request_body(ngx_http_request_t *r, |
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212 ngx_http_client_body_handler_pt post_handler); |
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213 |
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214 void ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc); |
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215 |
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216 ngx_int_t ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc); |
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217 |
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218 |
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219 #define ngx_spdy_frame_aligned_write_uint16(p, s) \ |
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220 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t)) |
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221 |
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222 #define ngx_spdy_frame_aligned_write_uint32(p, s) \ |
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223 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t)) |
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224 |
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|
225 #if (NGX_HAVE_NONALIGNED) |
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226 |
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|
227 #define ngx_spdy_frame_write_uint16 ngx_spdy_frame_aligned_write_uint16 |
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228 #define ngx_spdy_frame_write_uint32 ngx_spdy_frame_aligned_write_uint32 |
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229 |
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|
230 #else |
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231 |
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232 #define ngx_spdy_frame_write_uint16(p, s) \ |
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233 ((p)[0] = (u_char) ((s) >> 8), \ |
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234 (p)[1] = (u_char) (s), \ |
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235 (p) + sizeof(uint16_t)) |
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236 |
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237 #define ngx_spdy_frame_write_uint32(p, s) \ |
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238 ((p)[0] = (u_char) ((s) >> 24), \ |
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239 (p)[1] = (u_char) ((s) >> 16), \ |
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240 (p)[2] = (u_char) ((s) >> 8), \ |
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241 (p)[3] = (u_char) (s), \ |
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242 (p) + sizeof(uint32_t)) |
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243 |
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244 #endif |
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245 |
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246 |
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247 #define ngx_spdy_ctl_frame_head(t) \ |
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248 ((uint32_t) NGX_SPDY_CTL_BIT << 31 | NGX_SPDY_VERSION << 16 | (t)) |
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249 |
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250 #define ngx_spdy_frame_write_head(p, t) \ |
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251 ngx_spdy_frame_aligned_write_uint32(p, ngx_spdy_ctl_frame_head(t)) |
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252 |
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253 #define ngx_spdy_frame_write_flags_and_len(p, f, l) \ |
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254 ngx_spdy_frame_aligned_write_uint32(p, (f) << 24 | (l)) |
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255 #define ngx_spdy_frame_write_flags_and_id(p, f, i) \ |
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256 ngx_spdy_frame_aligned_write_uint32(p, (f) << 24 | (i)) |
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257 |
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258 #define ngx_spdy_frame_write_sid ngx_spdy_frame_aligned_write_uint32 |
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259 #define ngx_spdy_frame_write_window ngx_spdy_frame_aligned_write_uint32 |
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260 |
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261 #endif /* _NGX_HTTP_SPDY_H_INCLUDED_ */ |