Mercurial > hg > nginx
annotate src/http/ngx_http_spdy.h @ 5525:206c56e23a96
SPDY: better name for frame entries counter.
The "headers" is not a good term, since it is used not only to count
name/value pairs in the HEADERS block but to count SETTINGS entries too.
Moreover, one name/value pair in HEADERS can contain multiple http headers
with the same name.
No functional changes.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Wed, 22 Jan 2014 04:58:19 +0400 |
parents | b7ee1bae0ffa |
children | d5de6c25b759 |
rev | line source |
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5121
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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 2 |
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19 |
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20 #ifdef TLSEXT_TYPE_next_proto_neg |
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21 #define NGX_SPDY_NPN_ADVERTISE "\x06spdy/2" |
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22 #define NGX_SPDY_NPN_NEGOTIATED "spdy/2" |
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23 #endif |
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24 |
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25 #define NGX_SPDY_STATE_BUFFER_SIZE 16 |
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26 |
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27 #define NGX_SPDY_CTL_BIT 1 |
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28 |
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29 #define NGX_SPDY_SYN_STREAM 1 |
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30 #define NGX_SPDY_SYN_REPLY 2 |
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31 #define NGX_SPDY_RST_STREAM 3 |
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32 #define NGX_SPDY_SETTINGS 4 |
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33 #define NGX_SPDY_NOOP 5 |
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34 #define NGX_SPDY_PING 6 |
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35 #define NGX_SPDY_GOAWAY 7 |
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36 #define NGX_SPDY_HEADERS 8 |
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37 |
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38 #define NGX_SPDY_FRAME_HEADER_SIZE 8 |
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39 |
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40 #define NGX_SPDY_SID_SIZE 4 |
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41 |
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42 #define NGX_SPDY_SYN_STREAM_SIZE 10 |
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43 #define NGX_SPDY_SYN_REPLY_SIZE 6 |
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44 #define NGX_SPDY_RST_STREAM_SIZE 8 |
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45 #define NGX_SPDY_PING_SIZE 4 |
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46 #define NGX_SPDY_GOAWAY_SIZE 4 |
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47 #define NGX_SPDY_NV_NUM_SIZE 2 |
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48 #define NGX_SPDY_NV_NLEN_SIZE 2 |
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49 #define NGX_SPDY_NV_VLEN_SIZE 2 |
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50 #define NGX_SPDY_SETTINGS_NUM_SIZE 4 |
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51 #define NGX_SPDY_SETTINGS_IDF_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_IDF_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 3 |
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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 u_char buffer[NGX_SPDY_STATE_BUFFER_SIZE]; |
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85 size_t buffer_used; |
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86 ngx_http_spdy_handler_pt handler; |
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87 |
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88 z_stream zstream_in; |
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89 z_stream zstream_out; |
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90 |
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91 ngx_pool_t *pool; |
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92 |
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93 ngx_http_spdy_out_frame_t *free_ctl_frames; |
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94 ngx_connection_t *free_fake_connections; |
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95 |
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96 ngx_http_spdy_stream_t **streams_index; |
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97 |
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98 ngx_http_spdy_out_frame_t *last_out; |
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99 ngx_http_spdy_stream_t *last_stream; |
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100 |
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101 ngx_http_spdy_stream_t *stream; |
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102 |
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103 ngx_uint_t entries; |
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104 size_t length; |
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105 u_char flags; |
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106 |
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107 ngx_uint_t last_sid; |
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108 |
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109 unsigned blocked:1; |
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110 unsigned incomplete:1; |
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111 }; |
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112 |
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113 |
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114 struct ngx_http_spdy_stream_s { |
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115 ngx_uint_t id; |
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116 ngx_http_request_t *request; |
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117 ngx_http_spdy_connection_t *connection; |
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118 ngx_http_spdy_stream_t *index; |
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119 ngx_http_spdy_stream_t *next; |
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120 |
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121 ngx_uint_t header_buffers; |
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122 ngx_uint_t queued; |
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123 |
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124 ngx_http_spdy_out_frame_t *free_frames; |
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125 ngx_chain_t *free_data_headers; |
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126 ngx_chain_t *free_bufs; |
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127 |
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128 unsigned priority:2; |
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129 unsigned handled:1; |
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130 unsigned blocked:1; |
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131 unsigned in_closed:1; |
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132 unsigned out_closed:1; |
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133 unsigned skip_data:2; |
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134 }; |
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135 |
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136 |
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137 struct ngx_http_spdy_out_frame_s { |
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138 ngx_http_spdy_out_frame_t *next; |
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139 ngx_chain_t *first; |
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140 ngx_chain_t *last; |
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141 ngx_int_t (*handler)(ngx_http_spdy_connection_t *sc, |
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142 ngx_http_spdy_out_frame_t *frame); |
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143 |
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144 ngx_http_spdy_out_frame_t *free; |
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145 |
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146 ngx_http_spdy_stream_t *stream; |
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147 size_t size; |
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148 |
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149 ngx_uint_t priority; |
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150 unsigned blocked:1; |
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151 unsigned fin:1; |
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152 }; |
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153 |
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154 |
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155 static ngx_inline void |
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156 ngx_http_spdy_queue_frame(ngx_http_spdy_connection_t *sc, |
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157 ngx_http_spdy_out_frame_t *frame) |
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158 { |
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159 ngx_http_spdy_out_frame_t **out; |
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160 |
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161 for (out = &sc->last_out; *out; out = &(*out)->next) |
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162 { |
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163 if (frame->priority >= (*out)->priority) { |
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164 break; |
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165 } |
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166 } |
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167 |
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168 frame->next = *out; |
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169 *out = frame; |
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170 } |
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171 |
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172 |
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173 static ngx_inline void |
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174 ngx_http_spdy_queue_blocked_frame(ngx_http_spdy_connection_t *sc, |
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175 ngx_http_spdy_out_frame_t *frame) |
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176 { |
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177 ngx_http_spdy_out_frame_t **out; |
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178 |
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179 for (out = &sc->last_out; *out; out = &(*out)->next) |
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180 { |
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181 if ((*out)->blocked) { |
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182 break; |
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183 } |
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184 } |
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185 |
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186 frame->next = *out; |
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187 *out = frame; |
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188 } |
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189 |
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190 |
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191 void ngx_http_spdy_init(ngx_event_t *rev); |
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192 void ngx_http_spdy_request_headers_init(void); |
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193 |
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194 ngx_int_t ngx_http_spdy_read_request_body(ngx_http_request_t *r, |
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195 ngx_http_client_body_handler_pt post_handler); |
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196 |
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197 void ngx_http_spdy_close_stream(ngx_http_spdy_stream_t *stream, ngx_int_t rc); |
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198 |
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199 ngx_int_t ngx_http_spdy_send_output_queue(ngx_http_spdy_connection_t *sc); |
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200 |
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201 |
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202 #define ngx_spdy_frame_aligned_write_uint16(p, s) \ |
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203 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t)) |
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204 |
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205 #define ngx_spdy_frame_aligned_write_uint32(p, s) \ |
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206 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t)) |
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207 |
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208 #if (NGX_HAVE_NONALIGNED) |
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209 |
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210 #define ngx_spdy_frame_write_uint16 ngx_spdy_frame_aligned_write_uint16 |
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211 #define ngx_spdy_frame_write_uint32 ngx_spdy_frame_aligned_write_uint32 |
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212 |
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213 #else |
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214 |
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215 #define ngx_spdy_frame_write_uint16(p, s) \ |
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216 ((p)[0] = (u_char) (s) >> 8, (p)[1] = (u_char) (s), (p) + sizeof(uint16_t)) |
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217 |
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218 #define ngx_spdy_frame_write_uint32(p, s) \ |
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219 ((p)[0] = (u_char) (s) >> 24, \ |
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220 (p)[1] = (u_char) (s) >> 16, \ |
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221 (p)[2] = (u_char) (s) >> 8, \ |
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222 (p)[3] = (u_char) (s), (p) + sizeof(uint32_t)) |
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223 |
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224 #endif |
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225 |
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226 |
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227 #define ngx_spdy_ctl_frame_head(t) \ |
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228 ((uint32_t) NGX_SPDY_CTL_BIT << 31 | NGX_SPDY_VERSION << 16 | (t)) |
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229 |
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230 #define ngx_spdy_frame_write_head(p, t) \ |
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231 ngx_spdy_frame_aligned_write_uint32(p, ngx_spdy_ctl_frame_head(t)) |
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232 |
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233 #define ngx_spdy_frame_write_flags_and_len(p, f, l) \ |
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234 ngx_spdy_frame_aligned_write_uint32(p, (f) << 24 | (l)) |
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235 |
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236 #define ngx_spdy_frame_write_sid ngx_spdy_frame_aligned_write_uint32 |
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237 |
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238 #endif /* _NGX_HTTP_SPDY_H_INCLUDED_ */ |