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annotate src/stream/ngx_stream_upstream.h @ 6708:4080f94a996f

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Modules compatibility: slow start fields.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 29 Sep 2016 18:06:00 +0300
parents 29bf0dbc0a77
children d200a0fd00b7
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6115
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_STREAM_UPSTREAM_H_INCLUDED_
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9 #define _NGX_STREAM_UPSTREAM_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14 #include <ngx_stream.h>
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15 #include <ngx_event_connect.h>
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16
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17
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18 #define NGX_STREAM_UPSTREAM_CREATE 0x0001
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19 #define NGX_STREAM_UPSTREAM_WEIGHT 0x0002
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20 #define NGX_STREAM_UPSTREAM_MAX_FAILS 0x0004
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21 #define NGX_STREAM_UPSTREAM_FAIL_TIMEOUT 0x0008
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22 #define NGX_STREAM_UPSTREAM_DOWN 0x0010
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23 #define NGX_STREAM_UPSTREAM_BACKUP 0x0020
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24 #define NGX_STREAM_UPSTREAM_MAX_CONNS 0x0100
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26
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27 typedef struct {
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28 ngx_array_t upstreams;
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29 /* ngx_stream_upstream_srv_conf_t */
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30 } ngx_stream_upstream_main_conf_t;
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31
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32
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33 typedef struct ngx_stream_upstream_srv_conf_s ngx_stream_upstream_srv_conf_t;
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34
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35
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36 typedef ngx_int_t (*ngx_stream_upstream_init_pt)(ngx_conf_t *cf,
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37 ngx_stream_upstream_srv_conf_t *us);
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38 typedef ngx_int_t (*ngx_stream_upstream_init_peer_pt)(ngx_stream_session_t *s,
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39 ngx_stream_upstream_srv_conf_t *us);
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40
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41
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42 typedef struct {
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43 ngx_stream_upstream_init_pt init_upstream;
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44 ngx_stream_upstream_init_peer_pt init;
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45 void *data;
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46 } ngx_stream_upstream_peer_t;
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47
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48
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49 typedef struct {
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50 ngx_str_t name;
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51 ngx_addr_t *addrs;
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52 ngx_uint_t naddrs;
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53 ngx_uint_t weight;
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54 ngx_uint_t max_conns;
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55 ngx_uint_t max_fails;
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56 time_t fail_timeout;
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4080f94a996f Modules compatibility: slow start fields.
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57 ngx_msec_t slow_start;
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58
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59 unsigned down:1;
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60 unsigned backup:1;
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61 } ngx_stream_upstream_server_t;
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62
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63
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64 struct ngx_stream_upstream_srv_conf_s {
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65 ngx_stream_upstream_peer_t peer;
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66 void **srv_conf;
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67
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68 ngx_array_t *servers;
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69 /* ngx_stream_upstream_server_t */
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70
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71 ngx_uint_t flags;
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72 ngx_str_t host;
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73 u_char *file_name;
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74 ngx_uint_t line;
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75 in_port_t port;
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76 ngx_uint_t no_port; /* unsigned no_port:1 */
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77
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78 #if (NGX_STREAM_UPSTREAM_ZONE)
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79 ngx_shm_zone_t *shm_zone;
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80 #endif
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81 };
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82
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83
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84 typedef struct {
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85 ngx_msec_t response_time;
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86 ngx_msec_t connect_time;
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87 ngx_msec_t first_byte_time;
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88 off_t bytes_sent;
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89 off_t bytes_received;
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90
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91 ngx_str_t *peer;
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92 } ngx_stream_upstream_state_t;
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93
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94
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95 typedef struct {
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96 ngx_str_t host;
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97 in_port_t port;
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98 ngx_uint_t no_port; /* unsigned no_port:1 */
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99
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100 ngx_uint_t naddrs;
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101 ngx_resolver_addr_t *addrs;
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102
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103 struct sockaddr *sockaddr;
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104 socklen_t socklen;
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105
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106 ngx_resolver_ctx_t *ctx;
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107 } ngx_stream_upstream_resolved_t;
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108
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109
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110 typedef struct {
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111 ngx_peer_connection_t peer;
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112
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113 ngx_buf_t downstream_buf;
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114 ngx_buf_t upstream_buf;
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115
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116 ngx_chain_t *free;
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117 ngx_chain_t *upstream_out;
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118 ngx_chain_t *upstream_busy;
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119 ngx_chain_t *downstream_out;
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120 ngx_chain_t *downstream_busy;
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121
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122 off_t received;
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123 time_t start_sec;
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124 ngx_uint_t responses;
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125
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126 #if (NGX_STREAM_SSL)
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127 ngx_str_t ssl_name;
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128 #endif
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129
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130 ngx_stream_upstream_srv_conf_t *upstream;
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131 ngx_stream_upstream_resolved_t *resolved;
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132 ngx_stream_upstream_state_t *state;
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133 unsigned connected:1;
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134 unsigned proxy_protocol:1;
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135 } ngx_stream_upstream_t;
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136
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137
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138 ngx_stream_upstream_srv_conf_t *ngx_stream_upstream_add(ngx_conf_t *cf,
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139 ngx_url_t *u, ngx_uint_t flags);
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140
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141
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142 #define ngx_stream_conf_upstream_srv_conf(uscf, module) \
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143 uscf->srv_conf[module.ctx_index]
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144
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145
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146 extern ngx_module_t ngx_stream_upstream_module;
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147
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148
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149 #endif /* _NGX_STREAM_UPSTREAM_H_INCLUDED_ */