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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10 #include <ngx_event_connect.h>
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11
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12
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13 static void ngx_http_upstream_check_broken_connection(ngx_event_t *ev);
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14 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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15 ngx_http_upstream_t *u);
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28
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16 static void ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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28
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18 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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21 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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22 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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23 ngx_http_upstream_t *u);
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28
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24 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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25 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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26 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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27 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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28
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28 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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29 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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30
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31 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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32 uintptr_t data);
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33 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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34 u_char *buf, ngx_http_log_op_t *op);
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28
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35
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36 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf);
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37
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38
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39 ngx_http_module_t ngx_http_upstream_module_ctx = {
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40 ngx_http_upstream_add_log_formats, /* pre conf */
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41
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42 NULL, /* create main configuration */
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43 NULL, /* init main configuration */
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44
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45 NULL, /* create server configuration */
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46 NULL, /* merge server configuration */
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47
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48 NULL, /* create location configuration */
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49 NULL /* merge location configuration */
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50 };
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51
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52
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53 ngx_module_t ngx_http_upstream_module = {
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54 NGX_MODULE,
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55 &ngx_http_upstream_module_ctx, /* module context */
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56 NULL, /* module directives */
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57 NGX_HTTP_MODULE, /* module type */
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58 NULL, /* init module */
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59 NULL /* init process */
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60 };
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61
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62
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63 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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64 { ngx_string("upstream_status"), 0, NULL,
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65 ngx_http_upstream_log_status_getlen,
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66 ngx_http_upstream_log_status },
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67 { ngx_null_string, 0, NULL, NULL, NULL }
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68 };
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69
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70
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71 char *ngx_http_upstream_header_errors[] = {
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72 "upstream sent invalid header",
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73 "upstream sent too long header line"
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74 };
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75
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76
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36
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77 void
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78 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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79 {
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80 ngx_connection_t *c;
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81 ngx_http_upstream_t *u;
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82
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83 c = r->connection;
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84
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85 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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86 "http init upstream, client timer: %d", c->read->timer_set);
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87
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88 if (c->read->timer_set) {
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89 ngx_del_timer(c->read);
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90 }
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91
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92 c->read->event_handler = ngx_http_upstream_check_broken_connection;
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93
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94 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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95
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96 c->write->event_handler = ngx_http_upstream_check_broken_connection;
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97
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98 if (!c->write->active) {
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99 if (ngx_add_event(c->write, NGX_WRITE_EVENT,
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100 NGX_CLEAR_EVENT) == NGX_ERROR)
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101 {
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102 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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103 return;
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104 }
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105 }
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106 }
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107
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108 u = r->upstream;
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109
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110 u->method = r->method;
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111
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112 if (u->create_request(r) == NGX_ERROR) {
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113 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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114 return;
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115 }
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116
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117 u->peer.log = r->connection->log;
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32
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118 u->saved_log_ctx = r->connection->log->data;
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119 u->saved_log_handler = r->connection->log->handler;
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28
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120 r->connection->log->data = u->log_ctx;
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121 r->connection->log->handler = u->log_handler;
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122
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123 u->output.sendfile = r->connection->sendfile;
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124 u->output.pool = r->pool;
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125 u->output.bufs.num = 1;
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126 u->output.output_filter = ngx_chain_writer;
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127 u->output.filter_ctx = &u->writer;
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128
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129 u->writer.pool = r->pool;
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130
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131 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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132 sizeof(ngx_http_upstream_state_t)) == NGX_ERROR)
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133 {
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134 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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135 return;
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136 }
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137
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138 if (!(u->state = ngx_push_array(&u->states))) {
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139 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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140 return;
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141 }
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142
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143 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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144
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145 ngx_http_upstream_connect(r, u);
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146 }
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147
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148
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36
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149 static void
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150 ngx_http_upstream_check_broken_connection(ngx_event_t *ev)
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28
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151 {
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152 int n;
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153 char buf[1];
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154 ngx_err_t err;
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155 ngx_connection_t *c;
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156 ngx_http_request_t *r;
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157 ngx_http_upstream_t *u;
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158
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159 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
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160 "http upstream check client, write event:%d", ev->write);
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161
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32
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162 c = ev->data;
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163 r = c->data;
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164 u = r->upstream;
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165
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166 if (u->peer.connection == NULL) {
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167 return;
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168 }
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169
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28
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170 #if (NGX_HAVE_KQUEUE)
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171
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172 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
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173
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174 if (!ev->pending_eof) {
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175 return;
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176 }
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177
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178 ev->eof = 1;
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179
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180 if (ev->kq_errno) {
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181 ev->error = 1;
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182 }
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183
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184 if (!u->cachable && u->peer.connection) {
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185 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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186 "kevent() reported that client closed "
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187 "prematurely connection, "
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188 "so upstream connection is closed too");
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189 ngx_http_upstream_finalize_request(r, u,
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190 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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191 return;
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192 }
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193
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194 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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195 "kevent() reported that client closed "
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196 "prematurely connection");
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197
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198 if (u->peer.connection == NULL) {
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199 ngx_http_upstream_finalize_request(r, u,
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200 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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201 return;
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202 }
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203
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204 return;
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205 }
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206
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207 #endif
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208
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209 n = recv(c->fd, buf, 1, MSG_PEEK);
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210
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211 err = ngx_socket_errno;
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212
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213 /*
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214 * we do not need to disable the write event because
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215 * that event has NGX_USE_CLEAR_EVENT type
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216 */
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217
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218 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
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219 return;
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220 }
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221
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222 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
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223 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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224 ngx_http_upstream_finalize_request(r, u,
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225 NGX_HTTP_INTERNAL_SERVER_ERROR);
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226 return;
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227 }
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228 }
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229
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230 if (n > 0) {
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231 return;
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232 }
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233
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234 ev->eof = 1;
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235
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236 if (n == -1) {
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237 if (err == NGX_EAGAIN) {
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238 return;
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239 }
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240
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241 ev->error = 1;
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242
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32
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243 } else { /* n == 0 */
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28
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244 err = 0;
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245 }
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246
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247 if (!u->cachable && u->peer.connection) {
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248 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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249 "client closed prematurely connection, "
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250 "so upstream connection is closed too");
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251 ngx_http_upstream_finalize_request(r, u,
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252 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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253 return;
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254 }
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255
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256 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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257 "client closed prematurely connection");
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258
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259 if (u->peer.connection == NULL) {
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260 ngx_http_upstream_finalize_request(r, u,
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261 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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262 return;
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263 }
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264 }
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265
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266
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36
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267 static void
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268 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
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28
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269 {
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270 ngx_int_t rc;
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271 ngx_connection_t *c;
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272
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32
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273 r->connection->log->action = "connecting to upstream";
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28
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274
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275 r->connection->single_connection = 0;
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276
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277 rc = ngx_event_connect_peer(&u->peer);
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278
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279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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280 "http upstream connect: %i", rc);
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281
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282 if (rc == NGX_ERROR) {
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283 ngx_http_upstream_finalize_request(r, u,
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284 NGX_HTTP_INTERNAL_SERVER_ERROR);
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285 return;
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286 }
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287
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288 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
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289
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290 if (rc == NGX_CONNECT_ERROR) {
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291 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
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292 return;
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293 }
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294
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295 c = u->peer.connection;
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296
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297 c->data = r;
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298 c->write->event_handler = ngx_http_upstream_send_request_handler;
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299 c->read->event_handler = ngx_http_upstream_process_header;
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300
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301 c->sendfile = r->connection->sendfile;
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302
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303 c->pool = r->pool;
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304 c->read->log = c->write->log = c->log = r->connection->log;
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305
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306 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
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307
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308 u->writer.out = NULL;
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309 u->writer.last = &u->writer.out;
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310 u->writer.connection = c;
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311 u->writer.limit = 0;
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312
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313 if (u->request_sent) {
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314 ngx_http_upstream_reinit(r, u);
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315 }
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316
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317 if (r->request_body->buf) {
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318 if (r->request_body->temp_file) {
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319
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320 if (!(u->output.free = ngx_alloc_chain_link(r->pool))) {
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321 ngx_http_upstream_finalize_request(r, u,
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322 NGX_HTTP_INTERNAL_SERVER_ERROR);
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323 return;
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324 }
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325
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326 u->output.free->buf = r->request_body->buf;
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327 u->output.free->next = NULL;
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328 u->output.allocated = 1;
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329
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330 r->request_body->buf->pos = r->request_body->buf->start;
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331 r->request_body->buf->last = r->request_body->buf->start;
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332 r->request_body->buf->tag = u->output.tag;
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333
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334 } else {
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335 r->request_body->buf->pos = r->request_body->buf->start;
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336 }
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337 }
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338
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339 u->request_sent = 0;
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340
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341 if (rc == NGX_AGAIN) {
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342 ngx_add_timer(c->write, u->conf->connect_timeout);
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343 return;
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344 }
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345
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346 /* rc == NGX_OK */
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347
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348 ngx_http_upstream_send_request(r, u);
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349 }
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350
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351
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36
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352 static void
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353 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
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28
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354 {
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355 ngx_chain_t *cl;
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356
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357 if (u->reinit_request(r) == NGX_ERROR) {
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358 ngx_http_upstream_finalize_request(r, u,
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359 NGX_HTTP_INTERNAL_SERVER_ERROR);
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360 return;
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361 }
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362
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363 /* reinit the request chain */
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364
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365 for (cl = r->request_body->bufs; cl; cl = cl->next) {
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366 cl->buf->pos = cl->buf->start;
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367 cl->buf->file_pos = 0;
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368 }
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369
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370 /* reinit the ngx_output_chain() context */
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371
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372 u->output.buf = NULL;
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373 u->output.in = NULL;
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374 u->output.free = NULL;
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375 u->output.busy = NULL;
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376
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377 /* reinit u->header_in buffer */
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378
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379 #if 0
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380 if (u->cache) {
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381 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
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382 u->header_in.last = u->header_in.pos;
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383
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384 } else {
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385 u->header_in.pos = u->header_in.start;
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386 u->header_in.last = u->header_in.start;
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387 }
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388 #else
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389 u->header_in.pos = u->header_in.start;
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390 u->header_in.last = u->header_in.start;
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391 #endif
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392
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393 /* add one more state */
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394
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395 if (!(u->state = ngx_push_array(&u->states))) {
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396 ngx_http_upstream_finalize_request(r, u,
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397 NGX_HTTP_INTERNAL_SERVER_ERROR);
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398 return;
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399 }
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400
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401 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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|
402 }
|
|
|
403
|
|
|
404
|
|
36
|
405 static void
|
|
|
406 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
407 {
|
|
32
|
408 int rc;
|
|
|
409 ngx_connection_t *c;
|
|
28
|
410
|
|
|
411 c = u->peer.connection;
|
|
|
412
|
|
|
413 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
414 "http upstream send request");
|
|
|
415
|
|
|
416 #if (NGX_HAVE_KQUEUE)
|
|
|
417
|
|
|
418 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
419 && !u->request_sent
|
|
|
420 && c->write->pending_eof)
|
|
|
421 {
|
|
|
422 ngx_log_error(NGX_LOG_ERR, c->log, c->write->kq_errno,
|
|
|
423 "connect() failed");
|
|
|
424
|
|
|
425 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
426 return;
|
|
|
427 }
|
|
|
428
|
|
|
429 #endif
|
|
|
430
|
|
32
|
431 c->log->action = "sending request to upstream";
|
|
28
|
432
|
|
|
433 rc = ngx_output_chain(&u->output,
|
|
|
434 u->request_sent ? NULL : r->request_body->bufs);
|
|
|
435
|
|
|
436 u->request_sent = 1;
|
|
|
437
|
|
|
438 if (rc == NGX_ERROR) {
|
|
|
439 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
440 return;
|
|
|
441 }
|
|
|
442
|
|
|
443 if (c->write->timer_set) {
|
|
|
444 ngx_del_timer(c->write);
|
|
|
445 }
|
|
|
446
|
|
|
447 if (rc == NGX_AGAIN) {
|
|
|
448 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
449
|
|
|
450 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
451 {
|
|
|
452 ngx_http_upstream_finalize_request(r, u,
|
|
|
453 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
454 return;
|
|
|
455 }
|
|
|
456
|
|
|
457 return;
|
|
|
458 }
|
|
|
459
|
|
|
460 /* rc == NGX_OK */
|
|
|
461
|
|
|
462 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
463 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
464 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
465 ngx_tcp_push_n " failed");
|
|
|
466 ngx_http_upstream_finalize_request(r, u,
|
|
|
467 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
468 return;
|
|
|
469 }
|
|
|
470
|
|
|
471 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
476
|
|
|
477 #if 1
|
|
|
478 if (c->read->ready) {
|
|
|
479
|
|
|
480 /* post aio operation */
|
|
|
481
|
|
|
482 /*
|
|
|
483 * TODO comment
|
|
|
484 * although we can post aio operation just in the end
|
|
|
485 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
486 * it's better to do here because we postpone header buffer allocation
|
|
|
487 */
|
|
|
488
|
|
|
489 ngx_http_upstream_process_header(c->read);
|
|
|
490 return;
|
|
|
491 }
|
|
|
492 #endif
|
|
|
493
|
|
|
494 c->write->event_handler = ngx_http_upstream_dummy_handler;
|
|
|
495
|
|
|
496 if (ngx_handle_level_write_event(c->write) == NGX_ERROR) {
|
|
|
497 ngx_http_upstream_finalize_request(r, u,
|
|
|
498 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
499 return;
|
|
|
500 }
|
|
|
501 }
|
|
|
502
|
|
|
503
|
|
36
|
504 static void
|
|
|
505 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
506 {
|
|
|
507 ngx_connection_t *c;
|
|
|
508 ngx_http_request_t *r;
|
|
|
509 ngx_http_upstream_t *u;
|
|
|
510
|
|
|
511 c = wev->data;
|
|
|
512 r = c->data;
|
|
|
513 u = r->upstream;
|
|
|
514
|
|
|
515 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
516 "http upstream send request handler");
|
|
|
517
|
|
|
518 if (wev->timedout) {
|
|
32
|
519 c->log->action = "sending request to upstream";
|
|
28
|
520 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
521 return;
|
|
|
522 }
|
|
|
523
|
|
|
524 if (r->connection->write->eof && (!u->cachable || !u->request_sent)) {
|
|
|
525 ngx_http_upstream_finalize_request(r, u,
|
|
|
526 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
527 return;
|
|
|
528 }
|
|
|
529
|
|
|
530 ngx_http_upstream_send_request(r, u);
|
|
|
531 }
|
|
|
532
|
|
|
533
|
|
36
|
534 static void
|
|
|
535 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
536 {
|
|
36
|
537 ssize_t n;
|
|
|
538 ngx_int_t rc;
|
|
|
539 ngx_uint_t i;
|
|
|
540 ngx_connection_t *c;
|
|
|
541 ngx_http_request_t *r;
|
|
|
542 ngx_http_upstream_t *u;
|
|
|
543 ngx_http_err_page_t *err_page;
|
|
|
544 ngx_http_core_loc_conf_t *clcf;
|
|
28
|
545
|
|
|
546 c = rev->data;
|
|
|
547 r = c->data;
|
|
|
548 u = r->upstream;
|
|
|
549
|
|
|
550 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
551 "http upstream process header");
|
|
28
|
552
|
|
32
|
553 c->log->action = "reading response header from upstream";
|
|
28
|
554
|
|
|
555 if (rev->timedout) {
|
|
|
556 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
557 return;
|
|
|
558 }
|
|
|
559
|
|
|
560 if (u->header_in.start == NULL) {
|
|
|
561 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
562 if (u->header_in.start == NULL) {
|
|
|
563 ngx_http_upstream_finalize_request(r, u,
|
|
|
564 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
565 return;
|
|
|
566 }
|
|
|
567
|
|
|
568 u->header_in.pos = u->header_in.start;
|
|
|
569 u->header_in.last = u->header_in.start;
|
|
32
|
570 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
571 u->header_in.temporary = 1;
|
|
|
572
|
|
|
573 u->header_in.tag = u->output.tag;
|
|
|
574
|
|
|
575 #if 0
|
|
|
576 if (u->cache) {
|
|
|
577 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
578 u->header_in.last = u->header_in.pos;
|
|
|
579 }
|
|
|
580 #endif
|
|
|
581 }
|
|
|
582
|
|
|
583 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
584 u->header_in.end - u->header_in.last);
|
|
|
585
|
|
|
586 if (n == NGX_AGAIN) {
|
|
|
587 #if 0
|
|
|
588 ngx_add_timer(rev, u->read_timeout);
|
|
|
589 #endif
|
|
|
590
|
|
|
591 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
592 ngx_http_upstream_finalize_request(r, u,
|
|
|
593 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
594 return;
|
|
|
595 }
|
|
|
596
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 if (n == 0) {
|
|
|
601 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
602 "upstream prematurely closed connection");
|
|
|
603 }
|
|
|
604
|
|
|
605 if (n == NGX_ERROR || n == 0) {
|
|
|
606 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
607 return;
|
|
|
608 }
|
|
|
609
|
|
|
610 if (n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
611 ngx_http_upstream_finalize_request(r, u,
|
|
|
612 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
613 return;
|
|
|
614 }
|
|
|
615
|
|
|
616 u->header_in.last += n;
|
|
|
617
|
|
|
618 #if 0
|
|
|
619 u->valid_header_in = 0;
|
|
|
620
|
|
|
621 u->peer.cached = 0;
|
|
|
622 #endif
|
|
|
623
|
|
|
624 rc = u->process_header(r);
|
|
|
625
|
|
|
626 if (rc == NGX_AGAIN) {
|
|
|
627 #if 0
|
|
|
628 ngx_add_timer(rev, u->read_timeout);
|
|
|
629 #endif
|
|
|
630
|
|
|
631 if (u->header_in.last == u->header_in.end) {
|
|
|
632 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
633 "upstream sent too big header");
|
|
|
634
|
|
|
635 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
636 return;
|
|
|
637 }
|
|
|
638
|
|
|
639 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
640 ngx_http_upstream_finalize_request(r, u,
|
|
|
641 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
642 return;
|
|
|
643 }
|
|
|
644
|
|
|
645 return;
|
|
|
646 }
|
|
|
647
|
|
|
648 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
649 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
650 return;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
654 ngx_http_upstream_finalize_request(r, u,
|
|
|
655 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
656 return;
|
|
|
657 }
|
|
|
658
|
|
|
659 /* rc == NGX_OK */
|
|
|
660
|
|
36
|
661 if (r->headers_out.status >= NGX_HTTP_BAD_REQUEST
|
|
|
662 && u->conf->redirect_errors
|
|
|
663 && r->err_ctx == NULL)
|
|
|
664 {
|
|
|
665 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
666
|
|
|
667 if (clcf->error_pages) {
|
|
|
668
|
|
|
669 err_page = clcf->error_pages->elts;
|
|
|
670 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
671 if (err_page[i].status == (ngx_int_t) r->headers_out.status) {
|
|
|
672 ngx_http_upstream_finalize_request(r, u,
|
|
|
673 r->headers_out.status);
|
|
|
674 return;
|
|
|
675 }
|
|
|
676 }
|
|
|
677 }
|
|
|
678 }
|
|
|
679
|
|
28
|
680 ngx_http_upstream_send_response(r, u);
|
|
|
681 }
|
|
|
682
|
|
|
683
|
|
36
|
684 static void
|
|
|
685 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
686 {
|
|
34
|
687 ngx_int_t rc;
|
|
28
|
688 ngx_event_pipe_t *p;
|
|
|
689 ngx_http_core_loc_conf_t *clcf;
|
|
|
690
|
|
34
|
691 rc = u->send_header(r);
|
|
28
|
692
|
|
34
|
693 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
694 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
695 return;
|
|
|
696 }
|
|
|
697
|
|
|
698 u->header_sent = 1;
|
|
|
699
|
|
|
700 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
701
|
|
|
702 #if 0
|
|
|
703
|
|
|
704 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
705 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
706 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
707 ngx_close_file_n " \"%s\" failed",
|
|
|
708 u->cache->ctx.file.name.data);
|
|
|
709 }
|
|
|
710 }
|
|
|
711
|
|
|
712 if (u->cachable) {
|
|
|
713 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
714
|
|
|
715 header->expires = u->cache->ctx.expires;
|
|
|
716 header->last_modified = u->cache->ctx.last_modified;
|
|
|
717 header->date = u->cache->ctx.date;
|
|
|
718 header->length = r->headers_out.content_length_n;
|
|
|
719 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
720
|
|
|
721 header->key_len = u->cache->ctx.key0.len;
|
|
|
722 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
723 header->key[header->key_len] = LF;
|
|
|
724 }
|
|
|
725
|
|
|
726 #endif
|
|
|
727
|
|
|
728 p = &u->pipe;
|
|
|
729
|
|
|
730 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
731 p->output_ctx = r;
|
|
|
732 p->tag = u->output.tag;
|
|
|
733 p->bufs = u->conf->bufs;
|
|
|
734 p->busy_size = u->conf->busy_buffers_size;
|
|
|
735 p->upstream = u->peer.connection;
|
|
|
736 p->downstream = r->connection;
|
|
|
737 p->pool = r->pool;
|
|
|
738 p->log = r->connection->log;
|
|
|
739
|
|
|
740 p->cachable = u->cachable;
|
|
|
741
|
|
|
742 if (!(p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t)))) {
|
|
|
743 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
744 return;
|
|
|
745 }
|
|
|
746
|
|
|
747 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
748 p->temp_file->file.log = r->connection->log;
|
|
|
749 p->temp_file->path = u->conf->temp_path;
|
|
|
750 p->temp_file->pool = r->pool;
|
|
|
751
|
|
|
752 if (u->cachable) {
|
|
|
753 p->temp_file->persistent = 1;
|
|
|
754 } else {
|
|
|
755 p->temp_file->warn = "an upstream response is buffered "
|
|
|
756 "to a temporary file";
|
|
|
757 }
|
|
|
758
|
|
|
759 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
760 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
761
|
|
|
762 if (!(p->preread_bufs = ngx_alloc_chain_link(r->pool))) {
|
|
|
763 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
764 return;
|
|
|
765 }
|
|
|
766 p->preread_bufs->buf = &u->header_in;
|
|
|
767 p->preread_bufs->next = NULL;
|
|
|
768 u->header_in.recycled = 1;
|
|
|
769
|
|
|
770 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
771
|
|
|
772 if (u->cachable) {
|
|
|
773 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
774 if (p->buf_to_file == NULL) {
|
|
|
775 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
776 return;
|
|
|
777 }
|
|
|
778 p->buf_to_file->pos = u->header_in.start;
|
|
|
779 p->buf_to_file->last = u->header_in.pos;
|
|
|
780 p->buf_to_file->temporary = 1;
|
|
|
781 }
|
|
|
782
|
|
|
783 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
784 /* the posted aio operation may currupt a shadow buffer */
|
|
|
785 p->single_buf = 1;
|
|
|
786 }
|
|
|
787
|
|
|
788 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
789 p->free_bufs = 1;
|
|
|
790
|
|
|
791 /*
|
|
|
792 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
793 * as though these bytes were read
|
|
|
794 */
|
|
|
795 u->header_in.last = u->header_in.pos;
|
|
|
796
|
|
|
797 if (u->conf->cyclic_temp_file) {
|
|
|
798
|
|
|
799 /*
|
|
|
800 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
801 * because the writing a new data may interfere with sendfile()
|
|
|
802 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
803 */
|
|
|
804
|
|
|
805 p->cyclic_temp_file = 1;
|
|
|
806 r->connection->sendfile = 0;
|
|
|
807
|
|
|
808 } else {
|
|
|
809 p->cyclic_temp_file = 0;
|
|
|
810 }
|
|
|
811
|
|
|
812 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
813
|
|
|
814 p->read_timeout = u->conf->read_timeout;
|
|
|
815 p->send_timeout = clcf->send_timeout;
|
|
|
816 p->send_lowat = clcf->send_lowat;
|
|
|
817
|
|
|
818 u->peer.connection->read->event_handler = ngx_http_upstream_process_body;
|
|
|
819 r->connection->write->event_handler = ngx_http_upstream_process_body;
|
|
|
820
|
|
|
821 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
822 }
|
|
|
823
|
|
|
824
|
|
36
|
825 static void
|
|
|
826 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
827 {
|
|
|
828 ngx_connection_t *c;
|
|
|
829 ngx_http_request_t *r;
|
|
|
830 ngx_http_upstream_t *u;
|
|
|
831 ngx_event_pipe_t *p;
|
|
|
832
|
|
|
833 c = ev->data;
|
|
|
834 r = c->data;
|
|
|
835 u = r->upstream;
|
|
|
836
|
|
|
837 if (ev->write) {
|
|
32
|
838 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
839 "http upstream process downstream");
|
|
|
840 c->log->action = "sending to client";
|
|
28
|
841
|
|
|
842 } else {
|
|
32
|
843 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
844 "http upstream process upstream");
|
|
|
845 c->log->action = "reading upstream";
|
|
28
|
846 }
|
|
|
847
|
|
|
848 p = &u->pipe;
|
|
|
849
|
|
|
850 if (ev->timedout) {
|
|
|
851 if (ev->write) {
|
|
|
852 p->downstream_error = 1;
|
|
|
853 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
854 "client timed out");
|
|
|
855
|
|
|
856 } else {
|
|
|
857 p->upstream_error = 1;
|
|
|
858 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
859 "upstream timed out");
|
|
|
860 }
|
|
|
861
|
|
|
862 } else {
|
|
|
863 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
864 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
865 return;
|
|
|
866 }
|
|
|
867 }
|
|
|
868
|
|
|
869 if (u->peer.connection) {
|
|
|
870
|
|
|
871 #if (NGX_HTTP_FILE_CACHE)
|
|
|
872
|
|
|
873 if (p->upstream_done && u->cachable) {
|
|
|
874 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
875 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
876 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
877 return;
|
|
|
878 }
|
|
|
879
|
|
|
880 } else if (p->upstream_eof && u->cachable) {
|
|
|
881
|
|
|
882 /* TODO: check length & update cache */
|
|
|
883
|
|
|
884 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
885 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
886 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
887 return;
|
|
|
888 }
|
|
|
889 }
|
|
|
890
|
|
|
891 #endif
|
|
|
892
|
|
|
893 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
894 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
895 "http upstream exit: %p", p->out);
|
|
28
|
896 #if 0
|
|
|
897 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
898 #endif
|
|
|
899 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
900 return;
|
|
|
901 }
|
|
|
902 }
|
|
|
903
|
|
|
904 if (p->downstream_error) {
|
|
32
|
905 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
906 "http upstream downstream error");
|
|
28
|
907
|
|
|
908 if (!u->cachable && u->peer.connection) {
|
|
|
909 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
910 }
|
|
|
911 }
|
|
|
912 }
|
|
|
913
|
|
|
914
|
|
36
|
915 static void
|
|
|
916 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
917 {
|
|
|
918 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
919 "http upstream dummy handler");
|
|
|
920 }
|
|
|
921
|
|
|
922
|
|
36
|
923 static void
|
|
|
924 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
925 ngx_uint_t ft_type)
|
|
28
|
926 {
|
|
|
927 ngx_uint_t status;
|
|
|
928
|
|
|
929 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
930 "http next upstream, %xD", ft_type);
|
|
|
931
|
|
|
932 #if 0
|
|
|
933 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
934 #endif
|
|
|
935
|
|
|
936 if (ft_type != NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
937 ngx_event_connect_peer_failed(&u->peer);
|
|
|
938 }
|
|
|
939
|
|
|
940 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
941 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
942 "upstream timed out");
|
|
|
943 }
|
|
|
944
|
|
|
945 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
946 status = 0;
|
|
|
947
|
|
|
948 } else {
|
|
|
949 switch(ft_type) {
|
|
|
950
|
|
|
951 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
952 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
953 break;
|
|
|
954
|
|
|
955 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
956 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
957 break;
|
|
|
958
|
|
|
959 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
960 status = NGX_HTTP_NOT_FOUND;
|
|
|
961 break;
|
|
|
962
|
|
|
963 /*
|
|
|
964 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
965 * never reach here
|
|
|
966 */
|
|
|
967
|
|
|
968 default:
|
|
|
969 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
970 }
|
|
|
971 }
|
|
|
972
|
|
|
973 if (r->connection->write->eof) {
|
|
|
974 ngx_http_upstream_finalize_request(r, u,
|
|
|
975 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
976 return;
|
|
|
977 }
|
|
|
978
|
|
|
979 if (status) {
|
|
|
980 u->state->status = status;
|
|
|
981
|
|
|
982 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type))
|
|
|
983 {
|
|
|
984
|
|
|
985 #if (NGX_HTTP_CACHE)
|
|
|
986
|
|
|
987 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
988 ngx_http_upstream_finalize_request(r, u,
|
|
32
|
989 ngx_http_send_cached_response(r));
|
|
28
|
990 return;
|
|
|
991 }
|
|
|
992
|
|
|
993 #endif
|
|
|
994
|
|
|
995 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
996 return;
|
|
|
997 }
|
|
|
998 }
|
|
|
999
|
|
|
1000 if (u->peer.connection) {
|
|
|
1001 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1002 "close http upstream connection: %d",
|
|
|
1003 u->peer.connection->fd);
|
|
|
1004
|
|
|
1005 ngx_close_connection(u->peer.connection);
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 #if 0
|
|
|
1009 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1010 ngx_http_upstream_busy_lock(p);
|
|
|
1011 return;
|
|
|
1012 }
|
|
|
1013 #endif
|
|
|
1014
|
|
|
1015 ngx_http_upstream_connect(r, u);
|
|
|
1016 }
|
|
|
1017
|
|
|
1018
|
|
36
|
1019 static void
|
|
|
1020 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1021 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1022 {
|
|
32
|
1023 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1024 "finalize http upstream request: %i", rc);
|
|
28
|
1025
|
|
|
1026 u->finalize_request(r, rc);
|
|
|
1027
|
|
|
1028 if (u->peer.connection) {
|
|
|
1029 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1030 "close http upstream connection: %d",
|
|
|
1031 u->peer.connection->fd);
|
|
|
1032
|
|
|
1033 ngx_close_connection(u->peer.connection);
|
|
|
1034 }
|
|
|
1035
|
|
32
|
1036 u->peer.connection = NULL;
|
|
|
1037
|
|
28
|
1038 if (u->header_sent
|
|
|
1039 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
1040 {
|
|
|
1041 rc = 0;
|
|
|
1042 }
|
|
|
1043
|
|
32
|
1044 if (u->saved_log_ctx) {
|
|
|
1045 r->connection->log->data = u->saved_log_ctx;
|
|
|
1046 r->connection->log->handler = u->saved_log_handler;
|
|
28
|
1047 }
|
|
|
1048
|
|
30
|
1049 if (u->pipe.temp_file) {
|
|
28
|
1050 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1051 "http upstream temp fd: %d",
|
|
|
1052 u->pipe.temp_file->file.fd);
|
|
|
1053 }
|
|
|
1054
|
|
|
1055 #if 0
|
|
|
1056 if (u->cache) {
|
|
|
1057 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1058 "http upstream cache fd: %d",
|
|
28
|
1059 u->cache->ctx.file.fd);
|
|
|
1060 }
|
|
|
1061 #endif
|
|
|
1062
|
|
30
|
1063 if (u->pipe.temp_file) {
|
|
28
|
1064 r->file.fd = u->pipe.temp_file->file.fd;
|
|
|
1065
|
|
|
1066 #if 0
|
|
|
1067 } else if (u->cache) {
|
|
|
1068 r->file.fd = u->cache->ctx.file.fd;
|
|
|
1069 #endif
|
|
|
1070 }
|
|
|
1071
|
|
32
|
1072 r->connection->log->action = "sending to client";
|
|
|
1073
|
|
28
|
1074 if (rc == 0 && r->main == NULL) {
|
|
|
1075 rc = ngx_http_send_last(r);
|
|
|
1076 }
|
|
|
1077
|
|
|
1078 ngx_http_finalize_request(r, rc);
|
|
|
1079 }
|
|
|
1080
|
|
|
1081
|
|
36
|
1082 static size_t
|
|
|
1083 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
1084 {
|
|
|
1085 if (r->upstream) {
|
|
|
1086 return r->upstream->states.nelts * (3 + 2);
|
|
|
1087 }
|
|
|
1088
|
|
|
1089 return 1;
|
|
|
1090 }
|
|
|
1091
|
|
|
1092
|
|
36
|
1093 static u_char *
|
|
|
1094 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1095 ngx_http_log_op_t *op)
|
|
28
|
1096 {
|
|
|
1097 ngx_uint_t i;
|
|
|
1098 ngx_http_upstream_t *u;
|
|
|
1099 ngx_http_upstream_state_t *state;
|
|
|
1100
|
|
|
1101 u = r->upstream;
|
|
|
1102
|
|
|
1103 if (u == NULL) {
|
|
|
1104 *buf = '-';
|
|
|
1105 return buf + 1;
|
|
|
1106 }
|
|
|
1107
|
|
|
1108 i = 0;
|
|
|
1109 state = u->states.elts;
|
|
|
1110
|
|
|
1111 for ( ;; ) {
|
|
|
1112 if (state[i].status == 0) {
|
|
|
1113 *buf++ = '-';
|
|
|
1114
|
|
|
1115 } else {
|
|
|
1116 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 if (++i == u->states.nelts) {
|
|
|
1120 return buf;
|
|
|
1121 }
|
|
|
1122
|
|
|
1123 *buf++ = ',';
|
|
|
1124 *buf++ = ' ';
|
|
|
1125 }
|
|
|
1126 }
|
|
|
1127
|
|
|
1128
|
|
36
|
1129 u_char *
|
|
|
1130 ngx_http_upstream_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
28
|
1131 {
|
|
|
1132 u_char *p;
|
|
|
1133 ngx_int_t escape;
|
|
|
1134 ngx_str_t uri;
|
|
32
|
1135 ngx_http_log_ctx_t *ctx;
|
|
28
|
1136 ngx_http_request_t *r;
|
|
|
1137 ngx_http_upstream_t *u;
|
|
|
1138 ngx_peer_connection_t *peer;
|
|
|
1139
|
|
32
|
1140 ctx = log->data;
|
|
28
|
1141 r = ctx->request;
|
|
|
1142 u = r->upstream;
|
|
|
1143 peer = &u->peer;
|
|
|
1144
|
|
|
1145 p = ngx_snprintf(buf, len,
|
|
|
1146 " while %s, client: %V, URL: %V, upstream: %V%V%s%V",
|
|
32
|
1147 log->action,
|
|
28
|
1148 &r->connection->addr_text,
|
|
|
1149 &r->unparsed_uri,
|
|
|
1150 &u->schema,
|
|
|
1151 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1152 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
|
1153 &u->uri);
|
|
|
1154 len -= p - buf;
|
|
|
1155 buf = p;
|
|
|
1156
|
|
|
1157 if (r->quoted_uri) {
|
|
|
1158 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->location->len,
|
|
|
1159 r->uri.len - u->location->len,
|
|
|
1160 NGX_ESCAPE_URI);
|
|
|
1161 } else {
|
|
|
1162 escape = 0;
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 if (escape) {
|
|
|
1166 if (len >= r->uri.len - u->location->len + escape) {
|
|
|
1167
|
|
|
1168 ngx_escape_uri(buf, r->uri.data + u->location->len,
|
|
|
1169 r->uri.len - u->location->len, NGX_ESCAPE_URI);
|
|
|
1170
|
|
|
1171 buf += r->uri.len - u->location->len + escape;
|
|
|
1172
|
|
|
1173 if (r->args.len == 0) {
|
|
|
1174 return buf;
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 len -= r->uri.len - u->location->len + escape;
|
|
|
1178
|
|
|
1179 return ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1180 }
|
|
|
1181
|
|
|
1182 p = ngx_palloc(r->pool, r->uri.len - u->location->len + escape);
|
|
|
1183 if (p == NULL) {
|
|
|
1184 return buf;
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 ngx_escape_uri(p, r->uri.data + u->location->len,
|
|
|
1188 r->uri.len - u->location->len, NGX_ESCAPE_URI);
|
|
|
1189
|
|
|
1190 uri.len = r->uri.len - u->location->len + escape;
|
|
|
1191 uri.data = p;
|
|
|
1192
|
|
|
1193 } else {
|
|
|
1194 uri.len = r->uri.len - u->location->len;
|
|
|
1195 uri.data = r->uri.data + u->location->len;
|
|
|
1196
|
|
|
1197 }
|
|
|
1198
|
|
|
1199 return ngx_snprintf(buf, len, "%V%s%V",
|
|
|
1200 &uri, r->args.len ? "?" : "", &r->args);
|
|
|
1201 }
|
|
|
1202
|
|
|
1203
|
|
36
|
1204 static ngx_int_t
|
|
|
1205 ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
28
|
1206 {
|
|
|
1207 ngx_http_log_op_name_t *op;
|
|
|
1208
|
|
|
1209 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1210 op->run = NULL;
|
|
|
1211
|
|
|
1212 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1213 if (op->name.len == 0) {
|
|
|
1214 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1215 }
|
|
|
1216 }
|
|
|
1217
|
|
|
1218 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
1219
|
|
|
1220 return NGX_OK;
|
|
|
1221 }
|
