Mercurial > hg > nginx
annotate src/http/v2/ngx_http_v2.h @ 6278:b78df0822168
HTTP/2: fixed the NGX_HTTP_V2_MAX_FIELD macro.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Mon, 26 Oct 2015 17:46:13 +0300 |
parents | 081a073e5164 |
children | 1f26bf65b1bc |
rev | line source |
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The HTTP/2 implementation (RFC 7240, 7241).
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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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HTTP/2: fixed the NGX_HTTP_V2_MAX_FIELD macro.
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24 #define NGX_HTTP_V2_MAX_FIELD \ |
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HTTP/2: fixed the NGX_HTTP_V2_MAX_FIELD macro.
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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_DATA_DISCARD 1 |
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28 #define NGX_HTTP_V2_DATA_ERROR 2 |
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29 #define NGX_HTTP_V2_DATA_INTERNAL_ERROR 3 |
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30 |
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31 #define NGX_HTTP_V2_FRAME_HEADER_SIZE 9 |
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32 |
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33 /* frame types */ |
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34 #define NGX_HTTP_V2_DATA_FRAME 0x0 |
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35 #define NGX_HTTP_V2_HEADERS_FRAME 0x1 |
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36 #define NGX_HTTP_V2_PRIORITY_FRAME 0x2 |
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37 #define NGX_HTTP_V2_RST_STREAM_FRAME 0x3 |
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38 #define NGX_HTTP_V2_SETTINGS_FRAME 0x4 |
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39 #define NGX_HTTP_V2_PUSH_PROMISE_FRAME 0x5 |
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40 #define NGX_HTTP_V2_PING_FRAME 0x6 |
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41 #define NGX_HTTP_V2_GOAWAY_FRAME 0x7 |
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42 #define NGX_HTTP_V2_WINDOW_UPDATE_FRAME 0x8 |
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43 #define NGX_HTTP_V2_CONTINUATION_FRAME 0x9 |
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44 |
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45 /* frame flags */ |
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46 #define NGX_HTTP_V2_NO_FLAG 0x00 |
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47 #define NGX_HTTP_V2_ACK_FLAG 0x01 |
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48 #define NGX_HTTP_V2_END_STREAM_FLAG 0x01 |
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49 #define NGX_HTTP_V2_END_HEADERS_FLAG 0x04 |
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50 #define NGX_HTTP_V2_PADDED_FLAG 0x08 |
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51 #define NGX_HTTP_V2_PRIORITY_FLAG 0x20 |
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52 |
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53 |
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54 typedef struct ngx_http_v2_connection_s ngx_http_v2_connection_t; |
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55 typedef struct ngx_http_v2_node_s ngx_http_v2_node_t; |
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56 typedef struct ngx_http_v2_out_frame_s ngx_http_v2_out_frame_t; |
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57 |
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58 |
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59 typedef u_char *(*ngx_http_v2_handler_pt) (ngx_http_v2_connection_t *h2c, |
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60 u_char *pos, u_char *end); |
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61 |
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62 |
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63 typedef struct { |
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64 ngx_str_t name; |
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65 ngx_str_t value; |
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66 } ngx_http_v2_header_t; |
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67 |
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68 |
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69 typedef struct { |
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70 ngx_uint_t sid; |
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71 size_t length; |
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72 size_t padding; |
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73 unsigned flags:8; |
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74 |
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75 unsigned incomplete: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 size_t field_limit; |
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84 u_char field_state; |
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85 u_char *field_start; |
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86 u_char *field_end; |
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87 size_t field_rest; |
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88 ngx_pool_t *pool; |
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89 |
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90 ngx_http_v2_stream_t *stream; |
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91 |
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92 u_char buffer[NGX_HTTP_V2_STATE_BUFFER_SIZE]; |
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93 size_t buffer_used; |
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94 ngx_http_v2_handler_pt handler; |
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95 } ngx_http_v2_state_t; |
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96 |
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97 |
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98 |
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99 typedef struct { |
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100 ngx_http_v2_header_t **entries; |
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101 |
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102 ngx_uint_t added; |
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103 ngx_uint_t deleted; |
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104 ngx_uint_t reused; |
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105 ngx_uint_t allocated; |
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106 |
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107 size_t size; |
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108 size_t free; |
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109 u_char *storage; |
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110 u_char *pos; |
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111 } ngx_http_v2_hpack_t; |
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112 |
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113 |
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114 struct ngx_http_v2_connection_s { |
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115 ngx_connection_t *connection; |
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116 ngx_http_connection_t *http_connection; |
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117 |
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118 ngx_uint_t processing; |
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119 |
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The HTTP/2 implementation (RFC 7240, 7241).
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120 size_t send_window; |
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The HTTP/2 implementation (RFC 7240, 7241).
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121 size_t recv_window; |
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The HTTP/2 implementation (RFC 7240, 7241).
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122 size_t init_window; |
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123 |
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124 size_t frame_size; |
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125 |
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126 ngx_queue_t waiting; |
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127 |
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128 ngx_http_v2_state_t state; |
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129 |
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130 ngx_http_v2_hpack_t hpack; |
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131 |
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132 ngx_pool_t *pool; |
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133 |
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134 ngx_http_v2_out_frame_t *free_frames; |
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135 ngx_connection_t *free_fake_connections; |
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136 |
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137 ngx_http_v2_node_t **streams_index; |
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138 |
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139 ngx_http_v2_out_frame_t *last_out; |
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140 |
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141 ngx_queue_t posted; |
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142 ngx_queue_t dependencies; |
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143 ngx_queue_t closed; |
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144 |
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145 ngx_uint_t last_sid; |
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146 |
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The HTTP/2 implementation (RFC 7240, 7241).
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147 unsigned closed_nodes:8; |
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148 unsigned blocked: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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The HTTP/2 implementation (RFC 7240, 7241).
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157 ngx_queue_t children; |
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The HTTP/2 implementation (RFC 7240, 7241).
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158 ngx_queue_t reuse; |
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The HTTP/2 implementation (RFC 7240, 7241).
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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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The HTTP/2 implementation (RFC 7240, 7241).
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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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The HTTP/2 implementation (RFC 7240, 7241).
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168 ngx_http_v2_connection_t *connection; |
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The HTTP/2 implementation (RFC 7240, 7241).
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169 ngx_http_v2_node_t *node; |
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170 |
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171 ngx_uint_t header_buffers; |
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The HTTP/2 implementation (RFC 7240, 7241).
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172 ngx_uint_t queued; |
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173 |
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|
174 /* |
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175 * 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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176 * send_window to become negative, hence it's signed. |
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177 */ |
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178 ssize_t send_window; |
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The HTTP/2 implementation (RFC 7240, 7241).
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179 size_t recv_window; |
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180 |
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181 ngx_http_v2_out_frame_t *free_frames; |
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The HTTP/2 implementation (RFC 7240, 7241).
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182 ngx_chain_t *free_data_headers; |
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The HTTP/2 implementation (RFC 7240, 7241).
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183 ngx_chain_t *free_bufs; |
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184 |
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The HTTP/2 implementation (RFC 7240, 7241).
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185 ngx_queue_t queue; |
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186 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
187 ngx_array_t *cookies; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
188 |
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189 size_t header_limit; |
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190 |
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191 unsigned handled:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
192 unsigned blocked:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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193 unsigned exhausted:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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194 unsigned in_closed:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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195 unsigned out_closed:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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196 unsigned skip_data:2; |
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The HTTP/2 implementation (RFC 7240, 7241).
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197 }; |
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198 |
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199 |
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200 struct ngx_http_v2_out_frame_s { |
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|
201 ngx_http_v2_out_frame_t *next; |
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The HTTP/2 implementation (RFC 7240, 7241).
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202 ngx_chain_t *first; |
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The HTTP/2 implementation (RFC 7240, 7241).
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203 ngx_chain_t *last; |
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The HTTP/2 implementation (RFC 7240, 7241).
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204 ngx_int_t (*handler)(ngx_http_v2_connection_t *h2c, |
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The HTTP/2 implementation (RFC 7240, 7241).
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205 ngx_http_v2_out_frame_t *frame); |
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206 |
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The HTTP/2 implementation (RFC 7240, 7241).
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207 ngx_http_v2_stream_t *stream; |
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The HTTP/2 implementation (RFC 7240, 7241).
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208 size_t length; |
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The HTTP/2 implementation (RFC 7240, 7241).
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209 |
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The HTTP/2 implementation (RFC 7240, 7241).
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210 unsigned blocked:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
211 unsigned fin:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
212 }; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
213 |
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|
214 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
215 static ngx_inline void |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
216 ngx_http_v2_queue_frame(ngx_http_v2_connection_t *h2c, |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
217 ngx_http_v2_out_frame_t *frame) |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
218 { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
219 ngx_http_v2_out_frame_t **out; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
220 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
221 for (out = &h2c->last_out; *out; out = &(*out)->next) { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
222 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
223 if ((*out)->blocked || (*out)->stream == NULL) { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
224 break; |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
225 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
226 |
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The HTTP/2 implementation (RFC 7240, 7241).
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227 if ((*out)->stream->node->rank < frame->stream->node->rank |
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The HTTP/2 implementation (RFC 7240, 7241).
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228 || ((*out)->stream->node->rank == frame->stream->node->rank |
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|
229 && (*out)->stream->node->rel_weight |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
230 >= frame->stream->node->rel_weight)) |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
231 { |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
232 break; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
233 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
234 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
235 |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
diff
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|
236 frame->next = *out; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
237 *out = frame; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
238 } |
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239 |
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240 |
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241 static ngx_inline void |
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242 ngx_http_v2_queue_blocked_frame(ngx_http_v2_connection_t *h2c, |
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243 ngx_http_v2_out_frame_t *frame) |
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244 { |
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245 ngx_http_v2_out_frame_t **out; |
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246 |
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247 for (out = &h2c->last_out; *out; out = &(*out)->next) |
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248 { |
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249 if ((*out)->blocked || (*out)->stream == NULL) { |
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250 break; |
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251 } |
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252 } |
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253 |
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254 frame->next = *out; |
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255 *out = frame; |
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256 } |
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257 |
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258 |
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259 void ngx_http_v2_init(ngx_event_t *rev); |
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260 void ngx_http_v2_request_headers_init(void); |
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261 |
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262 ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r, |
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263 ngx_http_client_body_handler_pt post_handler); |
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264 |
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265 void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc); |
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266 |
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267 ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c); |
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268 |
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269 |
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270 ngx_int_t ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c, |
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271 ngx_uint_t index, ngx_uint_t name_only); |
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272 ngx_int_t ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c, |
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273 ngx_http_v2_header_t *header); |
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274 ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size); |
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275 |
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276 |
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277 ngx_int_t ngx_http_v2_huff_decode(u_char *state, u_char *src, size_t len, |
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278 u_char **dst, ngx_uint_t last, ngx_log_t *log); |
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279 |
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280 |
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281 #define ngx_http_v2_prefix(bits) ((1 << (bits)) - 1) |
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282 |
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283 |
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284 #if (NGX_HAVE_NONALIGNED) |
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285 |
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286 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p)) |
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287 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p)) |
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288 |
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289 #else |
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290 |
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291 #define ngx_http_v2_parse_uint16(p) ((p)[0] << 8 | (p)[1]) |
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292 #define ngx_http_v2_parse_uint32(p) \ |
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293 ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3]) |
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294 |
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295 #endif |
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296 |
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297 #define ngx_http_v2_parse_length(p) ((p) >> 8) |
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298 #define ngx_http_v2_parse_type(p) ((p) & 0xff) |
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299 #define ngx_http_v2_parse_sid(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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300 #define ngx_http_v2_parse_window(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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301 |
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302 |
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303 #define ngx_http_v2_write_uint16_aligned(p, s) \ |
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304 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t)) |
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305 #define ngx_http_v2_write_uint32_aligned(p, s) \ |
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306 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t)) |
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307 |
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308 #if (NGX_HAVE_NONALIGNED) |
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309 |
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310 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned |
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311 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned |
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312 |
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313 #else |
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314 |
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315 #define ngx_http_v2_write_uint16(p, s) \ |
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316 ((p)[0] = (u_char) ((s) >> 8), \ |
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317 (p)[1] = (u_char) (s), \ |
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318 (p) + sizeof(uint16_t)) |
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319 |
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320 #define ngx_http_v2_write_uint32(p, s) \ |
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321 ((p)[0] = (u_char) ((s) >> 24), \ |
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322 (p)[1] = (u_char) ((s) >> 16), \ |
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323 (p)[2] = (u_char) ((s) >> 8), \ |
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324 (p)[3] = (u_char) (s), \ |
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325 (p) + sizeof(uint32_t)) |
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326 |
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327 #endif |
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328 |
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329 #define ngx_http_v2_write_len_and_type(p, l, t) \ |
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330 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t)) |
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331 |
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332 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32 |
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333 |
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334 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */ |