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annotate src/http/v2/ngx_http_v2.h @ 6792:45d553812055

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HTTP/2: flow control debugging.
author Sergey Kandaurov <pluknet@nginx.com>
date Wed, 02 Nov 2016 11:47:12 +0300
parents 5e95b9fb33b7
children 3834951e32ab
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1 /*
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2 * Copyright (C) Nginx, Inc.
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3 * Copyright (C) Valentin V. Bartenev
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4 */
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5
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6
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7 #ifndef _NGX_HTTP_V2_H_INCLUDED_
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8 #define _NGX_HTTP_V2_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_http.h>
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14
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15
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16 #define NGX_HTTP_V2_ALPN_ADVERTISE "\x02h2"
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17 #define NGX_HTTP_V2_NPN_ADVERTISE NGX_HTTP_V2_ALPN_ADVERTISE
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18
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19 #define NGX_HTTP_V2_STATE_BUFFER_SIZE 16
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20
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21 #define NGX_HTTP_V2_MAX_FRAME_SIZE ((1 << 24) - 1)
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22
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23 #define NGX_HTTP_V2_INT_OCTETS 4
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24 #define NGX_HTTP_V2_MAX_FIELD \
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25 (127 + (1 << (NGX_HTTP_V2_INT_OCTETS - 1) * 7) - 1)
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26
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27 #define NGX_HTTP_V2_FRAME_HEADER_SIZE 9
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28
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29 /* frame types */
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30 #define NGX_HTTP_V2_DATA_FRAME 0x0
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31 #define NGX_HTTP_V2_HEADERS_FRAME 0x1
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32 #define NGX_HTTP_V2_PRIORITY_FRAME 0x2
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33 #define NGX_HTTP_V2_RST_STREAM_FRAME 0x3
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34 #define NGX_HTTP_V2_SETTINGS_FRAME 0x4
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35 #define NGX_HTTP_V2_PUSH_PROMISE_FRAME 0x5
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36 #define NGX_HTTP_V2_PING_FRAME 0x6
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37 #define NGX_HTTP_V2_GOAWAY_FRAME 0x7
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38 #define NGX_HTTP_V2_WINDOW_UPDATE_FRAME 0x8
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39 #define NGX_HTTP_V2_CONTINUATION_FRAME 0x9
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40
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41 /* frame flags */
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42 #define NGX_HTTP_V2_NO_FLAG 0x00
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43 #define NGX_HTTP_V2_ACK_FLAG 0x01
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44 #define NGX_HTTP_V2_END_STREAM_FLAG 0x01
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45 #define NGX_HTTP_V2_END_HEADERS_FLAG 0x04
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46 #define NGX_HTTP_V2_PADDED_FLAG 0x08
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47 #define NGX_HTTP_V2_PRIORITY_FLAG 0x20
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48
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49 #define NGX_HTTP_V2_MAX_WINDOW ((1U << 31) - 1)
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50 #define NGX_HTTP_V2_DEFAULT_WINDOW 65535
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51
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52
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53 typedef struct ngx_http_v2_connection_s ngx_http_v2_connection_t;
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54 typedef struct ngx_http_v2_node_s ngx_http_v2_node_t;
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55 typedef struct ngx_http_v2_out_frame_s ngx_http_v2_out_frame_t;
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56
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57
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58 typedef u_char *(*ngx_http_v2_handler_pt) (ngx_http_v2_connection_t *h2c,
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59 u_char *pos, u_char *end);
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60
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61
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62 typedef struct {
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63 ngx_str_t name;
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64 ngx_str_t value;
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65 } ngx_http_v2_header_t;
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66
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67
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68 typedef struct {
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69 ngx_uint_t sid;
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70 size_t length;
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71 size_t padding;
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72 unsigned flags:8;
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73
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74 unsigned incomplete:1;
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75 unsigned keep_pool:1;
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76
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77 /* HPACK */
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78 unsigned parse_name:1;
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79 unsigned parse_value:1;
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80 unsigned index:1;
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81 ngx_http_v2_header_t header;
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82 size_t header_limit;
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83 u_char field_state;
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84 u_char *field_start;
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85 u_char *field_end;
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86 size_t field_rest;
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87 ngx_pool_t *pool;
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88
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89 ngx_http_v2_stream_t *stream;
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90
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91 u_char buffer[NGX_HTTP_V2_STATE_BUFFER_SIZE];
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92 size_t buffer_used;
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93 ngx_http_v2_handler_pt handler;
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94 } ngx_http_v2_state_t;
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95
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96
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97
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98 typedef struct {
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99 ngx_http_v2_header_t **entries;
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100
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101 ngx_uint_t added;
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102 ngx_uint_t deleted;
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103 ngx_uint_t reused;
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104 ngx_uint_t allocated;
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105
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106 size_t size;
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107 size_t free;
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108 u_char *storage;
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109 u_char *pos;
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110 } ngx_http_v2_hpack_t;
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111
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112
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113 struct ngx_http_v2_connection_s {
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114 ngx_connection_t *connection;
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115 ngx_http_connection_t *http_connection;
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116
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117 ngx_uint_t processing;
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118
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119 size_t send_window;
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120 size_t recv_window;
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121 size_t init_window;
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122
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123 size_t frame_size;
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124
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125 ngx_queue_t waiting;
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126
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127 ngx_http_v2_state_t state;
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128
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129 ngx_http_v2_hpack_t hpack;
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130
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131 ngx_pool_t *pool;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
132
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
133 ngx_http_v2_out_frame_t *free_frames;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
134 ngx_connection_t *free_fake_connections;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
135
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
136 ngx_http_v2_node_t **streams_index;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
137
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
138 ngx_http_v2_out_frame_t *last_out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
139
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
140 ngx_queue_t posted;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
141 ngx_queue_t dependencies;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
142 ngx_queue_t closed;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
143
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
144 ngx_uint_t last_sid;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
145
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
146 unsigned closed_nodes:8;
6514
0aa07850922f HTTP/2: refuse streams with data until SETTINGS is acknowledged.
Valentin Bartenev <vbart@nginx.com>
parents: 6497
diff changeset
147 unsigned settings_ack:1;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
148 unsigned blocked:1;
6778
5e95b9fb33b7 HTTP/2: graceful shutdown of active connections (closes #1106).
Valentin Bartenev <vbart@nginx.com>
parents: 6627
diff changeset
149 unsigned goaway:1;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
150 };
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
151
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
152
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
153 struct ngx_http_v2_node_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
154 ngx_uint_t id;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
155 ngx_http_v2_node_t *index;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
156 ngx_http_v2_node_t *parent;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
157 ngx_queue_t queue;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
158 ngx_queue_t children;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
159 ngx_queue_t reuse;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
160 ngx_uint_t rank;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
161 ngx_uint_t weight;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
162 double rel_weight;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
163 ngx_http_v2_stream_t *stream;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
164 };
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
165
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
166
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
167 struct ngx_http_v2_stream_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
168 ngx_http_request_t *request;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
169 ngx_http_v2_connection_t *connection;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
170 ngx_http_v2_node_t *node;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
171
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
172 ngx_uint_t queued;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
173
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
174 /*
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
175 * A change to SETTINGS_INITIAL_WINDOW_SIZE could cause the
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
176 * send_window to become negative, hence it's signed.
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
177 */
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
178 ssize_t send_window;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
179 size_t recv_window;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
180
6566
ce94f07d5082 HTTP/2: implemented preread buffer for request body (closes #959).
Valentin Bartenev <vbart@nginx.com>
parents: 6514
diff changeset
181 ngx_buf_t *preread;
ce94f07d5082 HTTP/2: implemented preread buffer for request body (closes #959).
Valentin Bartenev <vbart@nginx.com>
parents: 6514
diff changeset
182
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
183 ngx_http_v2_out_frame_t *free_frames;
6293
ec6b07be88a5 HTTP/2: reused HEADERS and CONTINUATION frames buffers.
Valentin Bartenev <vbart@nginx.com>
parents: 6285
diff changeset
184 ngx_chain_t *free_frame_headers;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
185 ngx_chain_t *free_bufs;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
186
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
187 ngx_queue_t queue;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
188
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
189 ngx_array_t *cookies;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
190
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
191 size_t header_limit;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
192
6411
8ec349bb60b2 HTTP/2: always use temporary pool for processing headers.
Valentin Bartenev <vbart@nginx.com>
parents: 6395
diff changeset
193 ngx_pool_t *pool;
8ec349bb60b2 HTTP/2: always use temporary pool for processing headers.
Valentin Bartenev <vbart@nginx.com>
parents: 6395
diff changeset
194
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
195 unsigned handled:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
196 unsigned blocked:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
197 unsigned exhausted:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
198 unsigned in_closed:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
199 unsigned out_closed:1;
6495
92464ebace8e HTTP/2: sending RST_STREAM with NO_ERROR to discard request body.
Valentin Bartenev <vbart@nginx.com>
parents: 6411
diff changeset
200 unsigned rst_sent:1;
6496
887cca40ba6a HTTP/2: rewritten handling of request body.
Valentin Bartenev <vbart@nginx.com>
parents: 6495
diff changeset
201 unsigned no_flow_control:1;
887cca40ba6a HTTP/2: rewritten handling of request body.
Valentin Bartenev <vbart@nginx.com>
parents: 6495
diff changeset
202 unsigned skip_data:1;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
203 };
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
204
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
205
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
206 struct ngx_http_v2_out_frame_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
207 ngx_http_v2_out_frame_t *next;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
208 ngx_chain_t *first;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
209 ngx_chain_t *last;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
210 ngx_int_t (*handler)(ngx_http_v2_connection_t *h2c,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
211 ngx_http_v2_out_frame_t *frame);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
212
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
213 ngx_http_v2_stream_t *stream;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
214 size_t length;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
215
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
216 unsigned blocked:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
217 unsigned fin:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
218 };
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
219
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
220
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
221 static ngx_inline void
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
222 ngx_http_v2_queue_frame(ngx_http_v2_connection_t *h2c,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
223 ngx_http_v2_out_frame_t *frame)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
224 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
225 ngx_http_v2_out_frame_t **out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
226
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
227 for (out = &h2c->last_out; *out; out = &(*out)->next) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
228
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
229 if ((*out)->blocked || (*out)->stream == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
230 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
231 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
232
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
233 if ((*out)->stream->node->rank < frame->stream->node->rank
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
234 || ((*out)->stream->node->rank == frame->stream->node->rank
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
235 && (*out)->stream->node->rel_weight
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
236 >= frame->stream->node->rel_weight))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
237 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
238 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
239 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
240 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
241
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
242 frame->next = *out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
243 *out = frame;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
244 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
245
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
247 static ngx_inline void
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
248 ngx_http_v2_queue_blocked_frame(ngx_http_v2_connection_t *h2c,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
249 ngx_http_v2_out_frame_t *frame)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
250 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
251 ngx_http_v2_out_frame_t **out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
252
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
253 for (out = &h2c->last_out; *out; out = &(*out)->next)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
254 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
255 if ((*out)->blocked || (*out)->stream == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
256 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
257 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
258 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
259
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
260 frame->next = *out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
261 *out = frame;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
262 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
263
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
264
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
265 void ngx_http_v2_init(ngx_event_t *rev);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
266 void ngx_http_v2_request_headers_init(void);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
267
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
268 ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r,
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269 ngx_http_client_body_handler_pt post_handler);
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270 ngx_int_t ngx_http_v2_read_unbuffered_request_body(ngx_http_request_t *r);
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271
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272 void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc);
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273
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274 ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c);
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275
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276
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277 ngx_int_t ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c,
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278 ngx_uint_t index, ngx_uint_t name_only);
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279 ngx_int_t ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c,
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280 ngx_http_v2_header_t *header);
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281 ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size);
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282
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283
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284 ngx_int_t ngx_http_v2_huff_decode(u_char *state, u_char *src, size_t len,
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285 u_char **dst, ngx_uint_t last, ngx_log_t *log);
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286 size_t ngx_http_v2_huff_encode(u_char *src, size_t len, u_char *dst,
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287 ngx_uint_t lower);
6246
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288
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289
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290 #define ngx_http_v2_prefix(bits) ((1 << (bits)) - 1)
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291
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292
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293 #if (NGX_HAVE_NONALIGNED)
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294
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295 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p))
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296 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p))
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297
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298 #else
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299
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300 #define ngx_http_v2_parse_uint16(p) ((p)[0] << 8 | (p)[1])
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301 #define ngx_http_v2_parse_uint32(p) \
6627
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302 ((uint32_t) (p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
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303
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304 #endif
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305
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306 #define ngx_http_v2_parse_length(p) ((p) >> 8)
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307 #define ngx_http_v2_parse_type(p) ((p) & 0xff)
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308 #define ngx_http_v2_parse_sid(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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309 #define ngx_http_v2_parse_window(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff)
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310
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311
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312 #define ngx_http_v2_write_uint16_aligned(p, s) \
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313 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
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314 #define ngx_http_v2_write_uint32_aligned(p, s) \
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315 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t))
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316
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317 #if (NGX_HAVE_NONALIGNED)
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318
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319 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned
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320 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned
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321
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322 #else
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323
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324 #define ngx_http_v2_write_uint16(p, s) \
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325 ((p)[0] = (u_char) ((s) >> 8), \
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326 (p)[1] = (u_char) (s), \
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327 (p) + sizeof(uint16_t))
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328
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329 #define ngx_http_v2_write_uint32(p, s) \
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330 ((p)[0] = (u_char) ((s) >> 24), \
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331 (p)[1] = (u_char) ((s) >> 16), \
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332 (p)[2] = (u_char) ((s) >> 8), \
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333 (p)[3] = (u_char) (s), \
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334 (p) + sizeof(uint32_t))
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335
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336 #endif
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337
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338 #define ngx_http_v2_write_len_and_type(p, l, t) \
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339 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t))
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340
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341 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32
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342
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343 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */