Mercurial > hg > nginx-quic
annotate src/http/v2/ngx_http_v2.h @ 6292:f72d3129cd35
HTTP/2: fixed handling of output HEADERS frames.
The HEADERS frame is always represented by more than one buffer since
b930e598a199, but the handling code hasn't been adjusted.
Only the first buffer of HEADERS frame was checked and if it had been
sent while others had not, the rest of the frame was dropped, resulting
in broken connection.
Before b930e598a199, the problem could only be seen in case of HEADERS
frame with CONTINUATION.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Fri, 13 Nov 2015 20:10:50 +0300 |
parents | 1f26bf65b1bc |
children | ec6b07be88a5 |
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_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 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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The HTTP/2 implementation (RFC 7240, 7241).
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118 |
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The HTTP/2 implementation (RFC 7240, 7241).
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119 size_t send_window; |
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The HTTP/2 implementation (RFC 7240, 7241).
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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 posted; |
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The HTTP/2 implementation (RFC 7240, 7241).
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141 ngx_queue_t dependencies; |
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142 ngx_queue_t closed; |
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143 |
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144 ngx_uint_t last_sid; |
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145 |
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146 unsigned closed_nodes:8; |
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147 unsigned blocked:1; |
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148 }; |
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149 |
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150 |
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151 struct ngx_http_v2_node_s { |
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152 ngx_uint_t id; |
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153 ngx_http_v2_node_t *index; |
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154 ngx_http_v2_node_t *parent; |
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155 ngx_queue_t queue; |
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156 ngx_queue_t children; |
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The HTTP/2 implementation (RFC 7240, 7241).
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157 ngx_queue_t reuse; |
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The HTTP/2 implementation (RFC 7240, 7241).
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158 ngx_uint_t rank; |
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The HTTP/2 implementation (RFC 7240, 7241).
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159 ngx_uint_t weight; |
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The HTTP/2 implementation (RFC 7240, 7241).
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160 double rel_weight; |
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The HTTP/2 implementation (RFC 7240, 7241).
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161 ngx_http_v2_stream_t *stream; |
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The HTTP/2 implementation (RFC 7240, 7241).
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162 }; |
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163 |
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164 |
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165 struct ngx_http_v2_stream_s { |
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166 ngx_http_request_t *request; |
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The HTTP/2 implementation (RFC 7240, 7241).
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167 ngx_http_v2_connection_t *connection; |
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The HTTP/2 implementation (RFC 7240, 7241).
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168 ngx_http_v2_node_t *node; |
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169 |
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170 ngx_uint_t header_buffers; |
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The HTTP/2 implementation (RFC 7240, 7241).
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171 ngx_uint_t queued; |
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172 |
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173 /* |
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The HTTP/2 implementation (RFC 7240, 7241).
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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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177 ssize_t send_window; |
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The HTTP/2 implementation (RFC 7240, 7241).
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178 size_t recv_window; |
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179 |
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180 ngx_http_v2_out_frame_t *free_frames; |
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The HTTP/2 implementation (RFC 7240, 7241).
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181 ngx_chain_t *free_data_headers; |
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The HTTP/2 implementation (RFC 7240, 7241).
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182 ngx_chain_t *free_bufs; |
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183 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
184 ngx_queue_t queue; |
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185 |
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|
186 ngx_array_t *cookies; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
187 |
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188 size_t header_limit; |
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189 |
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190 unsigned handled:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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191 unsigned blocked:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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192 unsigned exhausted:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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193 unsigned in_closed:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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194 unsigned out_closed:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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195 unsigned skip_data:2; |
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The HTTP/2 implementation (RFC 7240, 7241).
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196 }; |
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|
197 |
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|
198 |
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199 struct ngx_http_v2_out_frame_s { |
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200 ngx_http_v2_out_frame_t *next; |
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The HTTP/2 implementation (RFC 7240, 7241).
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201 ngx_chain_t *first; |
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The HTTP/2 implementation (RFC 7240, 7241).
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202 ngx_chain_t *last; |
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The HTTP/2 implementation (RFC 7240, 7241).
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203 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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204 ngx_http_v2_out_frame_t *frame); |
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205 |
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The HTTP/2 implementation (RFC 7240, 7241).
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206 ngx_http_v2_stream_t *stream; |
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The HTTP/2 implementation (RFC 7240, 7241).
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207 size_t length; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
208 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
209 unsigned blocked:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
210 unsigned fin:1; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
211 }; |
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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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The HTTP/2 implementation (RFC 7240, 7241).
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|
214 static ngx_inline void |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
215 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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|
216 ngx_http_v2_out_frame_t *frame) |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
217 { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
218 ngx_http_v2_out_frame_t **out; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
219 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
220 for (out = &h2c->last_out; *out; out = &(*out)->next) { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
221 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
222 if ((*out)->blocked || (*out)->stream == NULL) { |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
223 break; |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
224 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
225 |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
226 if ((*out)->stream->node->rank < frame->stream->node->rank |
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The HTTP/2 implementation (RFC 7240, 7241).
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227 || ((*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->rel_weight |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
229 >= 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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|
230 { |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
diff
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|
231 break; |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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|
232 } |
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The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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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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parents:
diff
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|
235 frame->next = *out; |
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The HTTP/2 implementation (RFC 7240, 7241).
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|
236 *out = frame; |
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The HTTP/2 implementation (RFC 7240, 7241).
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237 } |
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238 |
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239 |
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240 static ngx_inline void |
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241 ngx_http_v2_queue_blocked_frame(ngx_http_v2_connection_t *h2c, |
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242 ngx_http_v2_out_frame_t *frame) |
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243 { |
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244 ngx_http_v2_out_frame_t **out; |
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245 |
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246 for (out = &h2c->last_out; *out; out = &(*out)->next) |
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247 { |
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248 if ((*out)->blocked || (*out)->stream == NULL) { |
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249 break; |
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250 } |
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251 } |
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252 |
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253 frame->next = *out; |
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254 *out = frame; |
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255 } |
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256 |
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257 |
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258 void ngx_http_v2_init(ngx_event_t *rev); |
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259 void ngx_http_v2_request_headers_init(void); |
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260 |
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261 ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r, |
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262 ngx_http_client_body_handler_pt post_handler); |
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263 |
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264 void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc); |
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265 |
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266 ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c); |
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267 |
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268 |
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269 ngx_int_t ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c, |
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270 ngx_uint_t index, ngx_uint_t name_only); |
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271 ngx_int_t ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c, |
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272 ngx_http_v2_header_t *header); |
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273 ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size); |
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274 |
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275 |
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276 ngx_int_t ngx_http_v2_huff_decode(u_char *state, u_char *src, size_t len, |
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277 u_char **dst, ngx_uint_t last, ngx_log_t *log); |
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278 |
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279 |
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280 #define ngx_http_v2_prefix(bits) ((1 << (bits)) - 1) |
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281 |
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282 |
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283 #if (NGX_HAVE_NONALIGNED) |
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284 |
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285 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p)) |
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286 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p)) |
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287 |
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288 #else |
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289 |
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290 #define ngx_http_v2_parse_uint16(p) ((p)[0] << 8 | (p)[1]) |
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291 #define ngx_http_v2_parse_uint32(p) \ |
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292 ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3]) |
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293 |
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294 #endif |
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295 |
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296 #define ngx_http_v2_parse_length(p) ((p) >> 8) |
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297 #define ngx_http_v2_parse_type(p) ((p) & 0xff) |
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298 #define ngx_http_v2_parse_sid(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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299 #define ngx_http_v2_parse_window(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff) |
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300 |
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301 |
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302 #define ngx_http_v2_write_uint16_aligned(p, s) \ |
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303 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t)) |
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304 #define ngx_http_v2_write_uint32_aligned(p, s) \ |
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305 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t)) |
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306 |
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307 #if (NGX_HAVE_NONALIGNED) |
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308 |
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309 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned |
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310 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned |
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311 |
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312 #else |
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313 |
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314 #define ngx_http_v2_write_uint16(p, s) \ |
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315 ((p)[0] = (u_char) ((s) >> 8), \ |
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316 (p)[1] = (u_char) (s), \ |
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317 (p) + sizeof(uint16_t)) |
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318 |
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319 #define ngx_http_v2_write_uint32(p, s) \ |
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320 ((p)[0] = (u_char) ((s) >> 24), \ |
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321 (p)[1] = (u_char) ((s) >> 16), \ |
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322 (p)[2] = (u_char) ((s) >> 8), \ |
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323 (p)[3] = (u_char) (s), \ |
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324 (p) + sizeof(uint32_t)) |
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325 |
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326 #endif |
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327 |
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328 #define ngx_http_v2_write_len_and_type(p, l, t) \ |
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329 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t)) |
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330 |
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331 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32 |
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332 |
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333 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */ |