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annotate src/http/v2/ngx_http_v2.h @ 6778:5e95b9fb33b7

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HTTP/2: graceful shutdown of active connections (closes #1106). Previously, while shutting down gracefully, the HTTP/2 connections were closed in transition to idle state after all active streams have been processed. That might never happen if the client continued opening new streams. Now, nginx sends GOAWAY to all HTTP/2 connections and ignores further attempts to open new streams. A worker process will quit as soon as processing of already opened streams is finished.
author Valentin Bartenev <vbart@nginx.com>
date Thu, 20 Oct 2016 16:15:03 +0300
parents ad736705a744
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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
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).
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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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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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,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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285 u_char **dst, ngx_uint_t last, ngx_log_t *log);
6395
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286 size_t ngx_http_v2_huff_encode(u_char *src, size_t len, u_char *dst,
ba3c2ca21aa5 HTTP/2: implemented HPACK Huffman encoding for response headers.
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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)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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291
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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292
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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293 #if (NGX_HAVE_NONALIGNED)
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294
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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295 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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296 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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297
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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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])
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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301 #define ngx_http_v2_parse_uint32(p) \
6627
ad736705a744 HTTP/2: avoid left-shifting signed integer into the sign bit.
Sergey Kandaurov <pluknet@nginx.com>
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302 ((uint32_t) (p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
6246
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303
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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304 #endif
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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305
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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306 #define ngx_http_v2_parse_length(p) ((p) >> 8)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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307 #define ngx_http_v2_parse_type(p) ((p) & 0xff)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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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)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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310
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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311
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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312 #define ngx_http_v2_write_uint16_aligned(p, s) \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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313 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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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))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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316
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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317 #if (NGX_HAVE_NONALIGNED)
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318
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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319 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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320 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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321
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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322 #else
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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323
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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324 #define ngx_http_v2_write_uint16(p, s) \
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325 ((p)[0] = (u_char) ((s) >> 8), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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326 (p)[1] = (u_char) (s), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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327 (p) + sizeof(uint16_t))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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328
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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329 #define ngx_http_v2_write_uint32(p, s) \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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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), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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333 (p)[3] = (u_char) (s), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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parents:
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334 (p) + sizeof(uint32_t))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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335
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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336 #endif
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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337
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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338 #define ngx_http_v2_write_len_and_type(p, l, t) \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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339 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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340
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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341 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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342
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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343 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */