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annotate src/http/v2/ngx_http_v2.h @ 6495:92464ebace8e

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HTTP/2: sending RST_STREAM with NO_ERROR to discard request body. RFC 7540 states that "A server can send a complete response prior to the client sending an entire request if the response does not depend on any portion of the request that has not been sent and received. When this is true, a server MAY request that the client abort transmission of a request without error by sending a RST_STREAM with an error code of NO_ERROR after sending a complete response (i.e., a frame with the END_STREAM flag)." This should prevent a client from blocking on the stream window, since it isn't maintained for closed streams. Currently, quite big initial stream windows are used, so such blocking is very unlikly, but that will be changed in the further patches.
author Valentin Bartenev <vbart@nginx.com>
date Fri, 01 Apr 2016 15:56:03 +0300
parents 8ec349bb60b2
children 887cca40ba6a
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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 unsigned keep_pool:1;
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77
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78 /* HPACK */
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79 unsigned parse_name:1;
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80 unsigned parse_value:1;
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81 unsigned index:1;
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82 ngx_http_v2_header_t header;
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83 size_t header_limit;
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84 u_char field_state;
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85 u_char *field_start;
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86 u_char *field_end;
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87 size_t field_rest;
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88 ngx_pool_t *pool;
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89
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90 ngx_http_v2_stream_t *stream;
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91
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92 u_char buffer[NGX_HTTP_V2_STATE_BUFFER_SIZE];
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93 size_t buffer_used;
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94 ngx_http_v2_handler_pt handler;
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95 } ngx_http_v2_state_t;
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96
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97
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98
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99 typedef struct {
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100 ngx_http_v2_header_t **entries;
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101
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102 ngx_uint_t added;
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103 ngx_uint_t deleted;
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104 ngx_uint_t reused;
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105 ngx_uint_t allocated;
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106
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107 size_t size;
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108 size_t free;
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109 u_char *storage;
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110 u_char *pos;
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111 } ngx_http_v2_hpack_t;
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112
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113
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114 struct ngx_http_v2_connection_s {
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115 ngx_connection_t *connection;
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116 ngx_http_connection_t *http_connection;
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117
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118 ngx_uint_t processing;
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119
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120 size_t send_window;
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121 size_t recv_window;
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122 size_t init_window;
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123
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124 size_t frame_size;
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125
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126 ngx_queue_t waiting;
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127
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128 ngx_http_v2_state_t state;
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129
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parents:
diff changeset
130 ngx_http_v2_hpack_t hpack;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
131
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
132 ngx_pool_t *pool;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
133
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
134 ngx_http_v2_out_frame_t *free_frames;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
135 ngx_connection_t *free_fake_connections;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
136
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
137 ngx_http_v2_node_t **streams_index;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
138
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
139 ngx_http_v2_out_frame_t *last_out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
140
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
141 ngx_queue_t posted;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
142 ngx_queue_t dependencies;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
143 ngx_queue_t closed;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
144
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
145 ngx_uint_t last_sid;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
146
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
147 unsigned closed_nodes:8;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
148 unsigned blocked:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
149 };
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 struct ngx_http_v2_node_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
153 ngx_uint_t id;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
154 ngx_http_v2_node_t *index;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
155 ngx_http_v2_node_t *parent;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
156 ngx_queue_t queue;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
157 ngx_queue_t children;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
158 ngx_queue_t reuse;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
159 ngx_uint_t rank;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
160 ngx_uint_t weight;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
161 double rel_weight;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
162 ngx_http_v2_stream_t *stream;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
163 };
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 struct ngx_http_v2_stream_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
167 ngx_http_request_t *request;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
168 ngx_http_v2_connection_t *connection;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
169 ngx_http_v2_node_t *node;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
170
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
171 ngx_uint_t queued;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
172
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 * 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
175 * 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
176 */
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
177 ssize_t send_window;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
178 size_t recv_window;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
179
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
180 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
181 ngx_chain_t *free_frame_headers;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
182 ngx_chain_t *free_bufs;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
183
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
184 ngx_queue_t queue;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
185
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
186 ngx_array_t *cookies;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
187
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
188 size_t header_limit;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
189
6411
8ec349bb60b2 HTTP/2: always use temporary pool for processing headers.
Valentin Bartenev <vbart@nginx.com>
parents: 6395
diff changeset
190 ngx_pool_t *pool;
8ec349bb60b2 HTTP/2: always use temporary pool for processing headers.
Valentin Bartenev <vbart@nginx.com>
parents: 6395
diff changeset
191
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
192 unsigned handled:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
193 unsigned blocked:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
194 unsigned exhausted:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
195 unsigned in_closed:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
196 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
197 unsigned rst_sent:1;
6246
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
198 unsigned skip_data:2;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
199 };
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
200
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
201
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
202 struct ngx_http_v2_out_frame_s {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
203 ngx_http_v2_out_frame_t *next;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
204 ngx_chain_t *first;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
205 ngx_chain_t *last;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
206 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
207 ngx_http_v2_out_frame_t *frame);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
208
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
209 ngx_http_v2_stream_t *stream;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
210 size_t length;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
211
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
212 unsigned blocked:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
213 unsigned fin:1;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
214 };
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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
217 static ngx_inline void
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
218 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
219 ngx_http_v2_out_frame_t *frame)
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 ngx_http_v2_out_frame_t **out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
222
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
223 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
224
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
225 if ((*out)->blocked || (*out)->stream == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
226 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
227 }
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)->stream->node->rank < frame->stream->node->rank
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
230 || ((*out)->stream->node->rank == frame->stream->node->rank
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
231 && (*out)->stream->node->rel_weight
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
232 >= frame->stream->node->rel_weight))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
233 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
234 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
235 }
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
236 }
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 frame->next = *out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
239 *out = frame;
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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
243 static ngx_inline void
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
244 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
245 ngx_http_v2_out_frame_t *frame)
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 ngx_http_v2_out_frame_t **out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
248
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
249 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
250 {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
251 if ((*out)->blocked || (*out)->stream == NULL) {
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
252 break;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
253 }
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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
256 frame->next = *out;
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
257 *out = frame;
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
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
261 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
262 void ngx_http_v2_request_headers_init(void);
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 ngx_int_t ngx_http_v2_read_request_body(ngx_http_request_t *r,
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
265 ngx_http_client_body_handler_pt post_handler);
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
Valentin Bartenev <vbart@nginx.com>
parents:
diff changeset
266
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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267 void ngx_http_v2_close_stream(ngx_http_v2_stream_t *stream, ngx_int_t rc);
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268
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269 ngx_int_t ngx_http_v2_send_output_queue(ngx_http_v2_connection_t *h2c);
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270
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271
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272 ngx_int_t ngx_http_v2_get_indexed_header(ngx_http_v2_connection_t *h2c,
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273 ngx_uint_t index, ngx_uint_t name_only);
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274 ngx_int_t ngx_http_v2_add_header(ngx_http_v2_connection_t *h2c,
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275 ngx_http_v2_header_t *header);
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276 ngx_int_t ngx_http_v2_table_size(ngx_http_v2_connection_t *h2c, size_t size);
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277
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278
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279 ngx_int_t ngx_http_v2_huff_decode(u_char *state, u_char *src, size_t len,
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280 u_char **dst, ngx_uint_t last, ngx_log_t *log);
6395
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281 size_t ngx_http_v2_huff_encode(u_char *src, size_t len, u_char *dst,
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282 ngx_uint_t lower);
6246
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283
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284
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285 #define ngx_http_v2_prefix(bits) ((1 << (bits)) - 1)
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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286
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287
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288 #if (NGX_HAVE_NONALIGNED)
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289
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290 #define ngx_http_v2_parse_uint16(p) ntohs(*(uint16_t *) (p))
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291 #define ngx_http_v2_parse_uint32(p) ntohl(*(uint32_t *) (p))
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292
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293 #else
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294
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295 #define ngx_http_v2_parse_uint16(p) ((p)[0] << 8 | (p)[1])
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296 #define ngx_http_v2_parse_uint32(p) \
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297 ((p)[0] << 24 | (p)[1] << 16 | (p)[2] << 8 | (p)[3])
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298
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299 #endif
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300
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301 #define ngx_http_v2_parse_length(p) ((p) >> 8)
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302 #define ngx_http_v2_parse_type(p) ((p) & 0xff)
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303 #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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304 #define ngx_http_v2_parse_window(p) (ngx_http_v2_parse_uint32(p) & 0x7fffffff)
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305
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306
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307 #define ngx_http_v2_write_uint16_aligned(p, s) \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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308 (*(uint16_t *) (p) = htons((uint16_t) (s)), (p) + sizeof(uint16_t))
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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309 #define ngx_http_v2_write_uint32_aligned(p, s) \
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310 (*(uint32_t *) (p) = htonl((uint32_t) (s)), (p) + sizeof(uint32_t))
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311
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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312 #if (NGX_HAVE_NONALIGNED)
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313
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314 #define ngx_http_v2_write_uint16 ngx_http_v2_write_uint16_aligned
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315 #define ngx_http_v2_write_uint32 ngx_http_v2_write_uint32_aligned
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316
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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317 #else
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318
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319 #define ngx_http_v2_write_uint16(p, s) \
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320 ((p)[0] = (u_char) ((s) >> 8), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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321 (p)[1] = (u_char) (s), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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322 (p) + sizeof(uint16_t))
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_uint32(p, s) \
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325 ((p)[0] = (u_char) ((s) >> 24), \
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326 (p)[1] = (u_char) ((s) >> 16), \
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327 (p)[2] = (u_char) ((s) >> 8), \
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328 (p)[3] = (u_char) (s), \
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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329 (p) + sizeof(uint32_t))
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330
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331 #endif
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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332
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333 #define ngx_http_v2_write_len_and_type(p, l, t) \
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334 ngx_http_v2_write_uint32_aligned(p, (l) << 8 | (t))
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335
257b51c37c5a The HTTP/2 implementation (RFC 7240, 7241).
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336 #define ngx_http_v2_write_sid ngx_http_v2_write_uint32
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337
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338 #endif /* _NGX_HTTP_V2_H_INCLUDED_ */