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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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50
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132 sizeof(ngx_http_upstream_state_t)) != NGX_OK)
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28
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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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50
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138 u->state = ngx_array_push(&u->states);
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139 if (u->state == NULL) {
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28
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140 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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141 return;
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142 }
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143
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144 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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145
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146 ngx_http_upstream_connect(r, u);
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147 }
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148
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149
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36
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150 static void
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151 ngx_http_upstream_check_broken_connection(ngx_event_t *ev)
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28
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152 {
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153 int n;
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154 char buf[1];
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155 ngx_err_t err;
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156 ngx_connection_t *c;
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157 ngx_http_request_t *r;
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158 ngx_http_upstream_t *u;
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159
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160 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
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161 "http upstream check client, write event:%d", ev->write);
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162
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32
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163 c = ev->data;
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164 r = c->data;
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165 u = r->upstream;
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166
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167 if (u->peer.connection == NULL) {
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168 return;
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169 }
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170
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28
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171 #if (NGX_HAVE_KQUEUE)
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172
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173 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
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174
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175 if (!ev->pending_eof) {
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176 return;
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177 }
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178
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179 ev->eof = 1;
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180
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181 if (ev->kq_errno) {
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182 ev->error = 1;
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183 }
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184
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185 if (!u->cachable && u->peer.connection) {
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186 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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187 "kevent() reported that client closed "
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188 "prematurely connection, "
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189 "so upstream connection is closed too");
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190 ngx_http_upstream_finalize_request(r, u,
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191 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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192 return;
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193 }
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194
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195 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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196 "kevent() reported that client closed "
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197 "prematurely connection");
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198
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199 if (u->peer.connection == NULL) {
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200 ngx_http_upstream_finalize_request(r, u,
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201 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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202 return;
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203 }
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204
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205 return;
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206 }
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207
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208 #endif
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209
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210 n = recv(c->fd, buf, 1, MSG_PEEK);
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211
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212 err = ngx_socket_errno;
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213
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214 /*
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215 * we do not need to disable the write event because
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216 * that event has NGX_USE_CLEAR_EVENT type
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217 */
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218
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219 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
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220 return;
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221 }
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222
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223 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
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224 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
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225 ngx_http_upstream_finalize_request(r, u,
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226 NGX_HTTP_INTERNAL_SERVER_ERROR);
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227 return;
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228 }
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229 }
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230
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231 if (n > 0) {
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232 return;
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233 }
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234
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235 ev->eof = 1;
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236
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237 if (n == -1) {
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238 if (err == NGX_EAGAIN) {
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239 return;
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240 }
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241
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242 ev->error = 1;
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243
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32
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244 } else { /* n == 0 */
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28
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245 err = 0;
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246 }
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247
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248 if (!u->cachable && u->peer.connection) {
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249 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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250 "client closed prematurely connection, "
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251 "so upstream connection is closed too");
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252 ngx_http_upstream_finalize_request(r, u,
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253 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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254 return;
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255 }
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256
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257 ngx_log_error(NGX_LOG_INFO, ev->log, err,
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258 "client closed prematurely connection");
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259
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260 if (u->peer.connection == NULL) {
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261 ngx_http_upstream_finalize_request(r, u,
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262 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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263 return;
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264 }
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265 }
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266
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267
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36
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268 static void
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269 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
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28
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270 {
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271 ngx_int_t rc;
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272 ngx_connection_t *c;
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273
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32
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274 r->connection->log->action = "connecting to upstream";
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28
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275
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276 r->connection->single_connection = 0;
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277
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278 rc = ngx_event_connect_peer(&u->peer);
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279
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280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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281 "http upstream connect: %i", rc);
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282
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283 if (rc == NGX_ERROR) {
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284 ngx_http_upstream_finalize_request(r, u,
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285 NGX_HTTP_INTERNAL_SERVER_ERROR);
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286 return;
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287 }
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288
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289 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
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290
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291 if (rc == NGX_CONNECT_ERROR) {
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292 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
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293 return;
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294 }
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295
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296 c = u->peer.connection;
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297
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298 c->data = r;
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299 c->write->event_handler = ngx_http_upstream_send_request_handler;
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300 c->read->event_handler = ngx_http_upstream_process_header;
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301
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302 c->sendfile = r->connection->sendfile;
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303
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304 c->pool = r->pool;
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305 c->read->log = c->write->log = c->log = r->connection->log;
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306
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307 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
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308
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309 u->writer.out = NULL;
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310 u->writer.last = &u->writer.out;
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311 u->writer.connection = c;
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312 u->writer.limit = 0;
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313
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314 if (u->request_sent) {
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315 ngx_http_upstream_reinit(r, u);
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316 }
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317
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318 if (r->request_body->buf) {
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319 if (r->request_body->temp_file) {
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320
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50
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321 u->output.free = ngx_alloc_chain_link(r->pool);
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322 if (u->output.free == NULL) {
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28
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323 ngx_http_upstream_finalize_request(r, u,
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324 NGX_HTTP_INTERNAL_SERVER_ERROR);
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325 return;
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326 }
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327
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328 u->output.free->buf = r->request_body->buf;
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329 u->output.free->next = NULL;
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330 u->output.allocated = 1;
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331
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332 r->request_body->buf->pos = r->request_body->buf->start;
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333 r->request_body->buf->last = r->request_body->buf->start;
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334 r->request_body->buf->tag = u->output.tag;
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335
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336 } else {
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337 r->request_body->buf->pos = r->request_body->buf->start;
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338 }
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339 }
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340
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341 u->request_sent = 0;
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342
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343 if (rc == NGX_AGAIN) {
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344 ngx_add_timer(c->write, u->conf->connect_timeout);
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345 return;
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346 }
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347
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348 /* rc == NGX_OK */
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349
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350 ngx_http_upstream_send_request(r, u);
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351 }
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352
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353
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36
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354 static void
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355 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
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28
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356 {
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357 ngx_chain_t *cl;
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358
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359 if (u->reinit_request(r) == NGX_ERROR) {
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360 ngx_http_upstream_finalize_request(r, u,
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361 NGX_HTTP_INTERNAL_SERVER_ERROR);
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362 return;
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363 }
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364
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365 /* reinit the request chain */
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366
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367 for (cl = r->request_body->bufs; cl; cl = cl->next) {
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368 cl->buf->pos = cl->buf->start;
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369 cl->buf->file_pos = 0;
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370 }
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371
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372 /* reinit the ngx_output_chain() context */
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373
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374 u->output.buf = NULL;
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375 u->output.in = NULL;
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376 u->output.free = NULL;
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377 u->output.busy = NULL;
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378
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379 /* reinit u->header_in buffer */
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380
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381 #if 0
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382 if (u->cache) {
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383 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
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384 u->header_in.last = u->header_in.pos;
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385
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386 } else {
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387 u->header_in.pos = u->header_in.start;
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388 u->header_in.last = u->header_in.start;
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389 }
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390 #else
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391 u->header_in.pos = u->header_in.start;
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392 u->header_in.last = u->header_in.start;
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393 #endif
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394
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395 /* add one more state */
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396
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50
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397 u->state = ngx_array_push(&u->states);
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398 if (u->state == NULL) {
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28
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399 ngx_http_upstream_finalize_request(r, u,
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400 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
401 return;
|
|
|
402 }
|
|
|
403
|
|
|
404 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
405 }
|
|
|
406
|
|
|
407
|
|
36
|
408 static void
|
|
|
409 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
410 {
|
|
32
|
411 int rc;
|
|
|
412 ngx_connection_t *c;
|
|
28
|
413
|
|
|
414 c = u->peer.connection;
|
|
|
415
|
|
|
416 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
417 "http upstream send request");
|
|
|
418
|
|
|
419 #if (NGX_HAVE_KQUEUE)
|
|
|
420
|
|
|
421 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
422 && !u->request_sent
|
|
|
423 && c->write->pending_eof)
|
|
|
424 {
|
|
|
425 ngx_log_error(NGX_LOG_ERR, c->log, c->write->kq_errno,
|
|
|
426 "connect() failed");
|
|
|
427
|
|
|
428 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
429 return;
|
|
|
430 }
|
|
|
431
|
|
|
432 #endif
|
|
|
433
|
|
32
|
434 c->log->action = "sending request to upstream";
|
|
28
|
435
|
|
|
436 rc = ngx_output_chain(&u->output,
|
|
|
437 u->request_sent ? NULL : r->request_body->bufs);
|
|
|
438
|
|
|
439 u->request_sent = 1;
|
|
|
440
|
|
|
441 if (rc == NGX_ERROR) {
|
|
|
442 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
443 return;
|
|
|
444 }
|
|
|
445
|
|
|
446 if (c->write->timer_set) {
|
|
|
447 ngx_del_timer(c->write);
|
|
|
448 }
|
|
|
449
|
|
|
450 if (rc == NGX_AGAIN) {
|
|
|
451 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
452
|
|
|
453 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
454 {
|
|
|
455 ngx_http_upstream_finalize_request(r, u,
|
|
|
456 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
457 return;
|
|
|
458 }
|
|
|
459
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 /* rc == NGX_OK */
|
|
|
464
|
|
|
465 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
466 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
467 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
468 ngx_tcp_push_n " failed");
|
|
|
469 ngx_http_upstream_finalize_request(r, u,
|
|
|
470 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
471 return;
|
|
|
472 }
|
|
|
473
|
|
|
474 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
475 return;
|
|
|
476 }
|
|
|
477
|
|
|
478 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
479
|
|
|
480 #if 1
|
|
|
481 if (c->read->ready) {
|
|
|
482
|
|
|
483 /* post aio operation */
|
|
|
484
|
|
|
485 /*
|
|
|
486 * TODO comment
|
|
|
487 * although we can post aio operation just in the end
|
|
|
488 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
489 * it's better to do here because we postpone header buffer allocation
|
|
|
490 */
|
|
|
491
|
|
|
492 ngx_http_upstream_process_header(c->read);
|
|
|
493 return;
|
|
|
494 }
|
|
|
495 #endif
|
|
|
496
|
|
|
497 c->write->event_handler = ngx_http_upstream_dummy_handler;
|
|
|
498
|
|
|
499 if (ngx_handle_level_write_event(c->write) == NGX_ERROR) {
|
|
|
500 ngx_http_upstream_finalize_request(r, u,
|
|
|
501 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
502 return;
|
|
|
503 }
|
|
|
504 }
|
|
|
505
|
|
|
506
|
|
36
|
507 static void
|
|
|
508 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
509 {
|
|
|
510 ngx_connection_t *c;
|
|
|
511 ngx_http_request_t *r;
|
|
|
512 ngx_http_upstream_t *u;
|
|
|
513
|
|
|
514 c = wev->data;
|
|
|
515 r = c->data;
|
|
|
516 u = r->upstream;
|
|
|
517
|
|
|
518 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
519 "http upstream send request handler");
|
|
|
520
|
|
|
521 if (wev->timedout) {
|
|
32
|
522 c->log->action = "sending request to upstream";
|
|
28
|
523 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
524 return;
|
|
|
525 }
|
|
|
526
|
|
|
527 if (r->connection->write->eof && (!u->cachable || !u->request_sent)) {
|
|
|
528 ngx_http_upstream_finalize_request(r, u,
|
|
|
529 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
530 return;
|
|
|
531 }
|
|
|
532
|
|
|
533 ngx_http_upstream_send_request(r, u);
|
|
|
534 }
|
|
|
535
|
|
|
536
|
|
36
|
537 static void
|
|
|
538 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
539 {
|
|
36
|
540 ssize_t n;
|
|
|
541 ngx_int_t rc;
|
|
|
542 ngx_uint_t i;
|
|
|
543 ngx_connection_t *c;
|
|
|
544 ngx_http_request_t *r;
|
|
|
545 ngx_http_upstream_t *u;
|
|
|
546 ngx_http_err_page_t *err_page;
|
|
|
547 ngx_http_core_loc_conf_t *clcf;
|
|
28
|
548
|
|
|
549 c = rev->data;
|
|
|
550 r = c->data;
|
|
|
551 u = r->upstream;
|
|
|
552
|
|
|
553 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
554 "http upstream process header");
|
|
28
|
555
|
|
32
|
556 c->log->action = "reading response header from upstream";
|
|
28
|
557
|
|
|
558 if (rev->timedout) {
|
|
|
559 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
560 return;
|
|
|
561 }
|
|
|
562
|
|
|
563 if (u->header_in.start == NULL) {
|
|
|
564 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
565 if (u->header_in.start == NULL) {
|
|
|
566 ngx_http_upstream_finalize_request(r, u,
|
|
|
567 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
568 return;
|
|
|
569 }
|
|
|
570
|
|
|
571 u->header_in.pos = u->header_in.start;
|
|
|
572 u->header_in.last = u->header_in.start;
|
|
32
|
573 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
574 u->header_in.temporary = 1;
|
|
|
575
|
|
|
576 u->header_in.tag = u->output.tag;
|
|
|
577
|
|
|
578 #if 0
|
|
|
579 if (u->cache) {
|
|
|
580 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
581 u->header_in.last = u->header_in.pos;
|
|
|
582 }
|
|
|
583 #endif
|
|
|
584 }
|
|
|
585
|
|
|
586 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
587 u->header_in.end - u->header_in.last);
|
|
|
588
|
|
|
589 if (n == NGX_AGAIN) {
|
|
|
590 #if 0
|
|
|
591 ngx_add_timer(rev, u->read_timeout);
|
|
|
592 #endif
|
|
|
593
|
|
|
594 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
595 ngx_http_upstream_finalize_request(r, u,
|
|
|
596 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 return;
|
|
|
601 }
|
|
|
602
|
|
|
603 if (n == 0) {
|
|
|
604 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
605 "upstream prematurely closed connection");
|
|
|
606 }
|
|
|
607
|
|
|
608 if (n == NGX_ERROR || n == 0) {
|
|
|
609 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
610 return;
|
|
|
611 }
|
|
|
612
|
|
|
613 if (n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
614 ngx_http_upstream_finalize_request(r, u,
|
|
|
615 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
|
619 u->header_in.last += n;
|
|
|
620
|
|
|
621 #if 0
|
|
|
622 u->valid_header_in = 0;
|
|
|
623
|
|
|
624 u->peer.cached = 0;
|
|
|
625 #endif
|
|
|
626
|
|
|
627 rc = u->process_header(r);
|
|
|
628
|
|
|
629 if (rc == NGX_AGAIN) {
|
|
|
630 #if 0
|
|
|
631 ngx_add_timer(rev, u->read_timeout);
|
|
|
632 #endif
|
|
|
633
|
|
|
634 if (u->header_in.last == u->header_in.end) {
|
|
|
635 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
636 "upstream sent too big header");
|
|
|
637
|
|
|
638 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
639 return;
|
|
|
640 }
|
|
|
641
|
|
|
642 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
643 ngx_http_upstream_finalize_request(r, u,
|
|
|
644 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
645 return;
|
|
|
646 }
|
|
|
647
|
|
|
648 return;
|
|
|
649 }
|
|
|
650
|
|
|
651 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
652 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
653 return;
|
|
|
654 }
|
|
|
655
|
|
|
656 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
657 ngx_http_upstream_finalize_request(r, u,
|
|
|
658 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
|
662 /* rc == NGX_OK */
|
|
|
663
|
|
36
|
664 if (r->headers_out.status >= NGX_HTTP_BAD_REQUEST
|
|
|
665 && u->conf->redirect_errors
|
|
|
666 && r->err_ctx == NULL)
|
|
|
667 {
|
|
|
668 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
669
|
|
|
670 if (clcf->error_pages) {
|
|
|
671
|
|
|
672 err_page = clcf->error_pages->elts;
|
|
|
673 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
674 if (err_page[i].status == (ngx_int_t) r->headers_out.status) {
|
|
|
675 ngx_http_upstream_finalize_request(r, u,
|
|
|
676 r->headers_out.status);
|
|
|
677 return;
|
|
|
678 }
|
|
|
679 }
|
|
|
680 }
|
|
|
681 }
|
|
|
682
|
|
28
|
683 ngx_http_upstream_send_response(r, u);
|
|
|
684 }
|
|
|
685
|
|
|
686
|
|
36
|
687 static void
|
|
|
688 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
689 {
|
|
34
|
690 ngx_int_t rc;
|
|
28
|
691 ngx_event_pipe_t *p;
|
|
|
692 ngx_http_core_loc_conf_t *clcf;
|
|
|
693
|
|
34
|
694 rc = u->send_header(r);
|
|
28
|
695
|
|
34
|
696 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
697 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
698 return;
|
|
|
699 }
|
|
|
700
|
|
|
701 u->header_sent = 1;
|
|
|
702
|
|
|
703 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
704
|
|
|
705 #if 0
|
|
|
706
|
|
|
707 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
708 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
709 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
710 ngx_close_file_n " \"%s\" failed",
|
|
|
711 u->cache->ctx.file.name.data);
|
|
|
712 }
|
|
|
713 }
|
|
|
714
|
|
|
715 if (u->cachable) {
|
|
|
716 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
717
|
|
|
718 header->expires = u->cache->ctx.expires;
|
|
|
719 header->last_modified = u->cache->ctx.last_modified;
|
|
|
720 header->date = u->cache->ctx.date;
|
|
|
721 header->length = r->headers_out.content_length_n;
|
|
|
722 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
723
|
|
|
724 header->key_len = u->cache->ctx.key0.len;
|
|
|
725 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
726 header->key[header->key_len] = LF;
|
|
|
727 }
|
|
|
728
|
|
|
729 #endif
|
|
|
730
|
|
|
731 p = &u->pipe;
|
|
|
732
|
|
|
733 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
734 p->output_ctx = r;
|
|
|
735 p->tag = u->output.tag;
|
|
|
736 p->bufs = u->conf->bufs;
|
|
|
737 p->busy_size = u->conf->busy_buffers_size;
|
|
|
738 p->upstream = u->peer.connection;
|
|
|
739 p->downstream = r->connection;
|
|
|
740 p->pool = r->pool;
|
|
|
741 p->log = r->connection->log;
|
|
|
742
|
|
|
743 p->cachable = u->cachable;
|
|
|
744
|
|
50
|
745 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
746 if (p->temp_file == NULL) {
|
|
28
|
747 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
748 return;
|
|
|
749 }
|
|
|
750
|
|
|
751 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
752 p->temp_file->file.log = r->connection->log;
|
|
|
753 p->temp_file->path = u->conf->temp_path;
|
|
|
754 p->temp_file->pool = r->pool;
|
|
|
755
|
|
|
756 if (u->cachable) {
|
|
|
757 p->temp_file->persistent = 1;
|
|
|
758 } else {
|
|
|
759 p->temp_file->warn = "an upstream response is buffered "
|
|
|
760 "to a temporary file";
|
|
|
761 }
|
|
|
762
|
|
|
763 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
764 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
765
|
|
50
|
766 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
767 if (p->preread_bufs == NULL) {
|
|
28
|
768 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
769 return;
|
|
|
770 }
|
|
|
771 p->preread_bufs->buf = &u->header_in;
|
|
|
772 p->preread_bufs->next = NULL;
|
|
|
773 u->header_in.recycled = 1;
|
|
|
774
|
|
|
775 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
776
|
|
|
777 if (u->cachable) {
|
|
|
778 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
779 if (p->buf_to_file == NULL) {
|
|
|
780 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
781 return;
|
|
|
782 }
|
|
|
783 p->buf_to_file->pos = u->header_in.start;
|
|
|
784 p->buf_to_file->last = u->header_in.pos;
|
|
|
785 p->buf_to_file->temporary = 1;
|
|
|
786 }
|
|
|
787
|
|
|
788 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
789 /* the posted aio operation may currupt a shadow buffer */
|
|
|
790 p->single_buf = 1;
|
|
|
791 }
|
|
|
792
|
|
|
793 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
794 p->free_bufs = 1;
|
|
|
795
|
|
|
796 /*
|
|
|
797 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
798 * as though these bytes were read
|
|
|
799 */
|
|
|
800 u->header_in.last = u->header_in.pos;
|
|
|
801
|
|
|
802 if (u->conf->cyclic_temp_file) {
|
|
|
803
|
|
|
804 /*
|
|
|
805 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
806 * because the writing a new data may interfere with sendfile()
|
|
|
807 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
808 */
|
|
|
809
|
|
|
810 p->cyclic_temp_file = 1;
|
|
|
811 r->connection->sendfile = 0;
|
|
|
812
|
|
|
813 } else {
|
|
|
814 p->cyclic_temp_file = 0;
|
|
|
815 }
|
|
|
816
|
|
|
817 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
818
|
|
|
819 p->read_timeout = u->conf->read_timeout;
|
|
|
820 p->send_timeout = clcf->send_timeout;
|
|
|
821 p->send_lowat = clcf->send_lowat;
|
|
|
822
|
|
|
823 u->peer.connection->read->event_handler = ngx_http_upstream_process_body;
|
|
|
824 r->connection->write->event_handler = ngx_http_upstream_process_body;
|
|
|
825
|
|
|
826 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
827 }
|
|
|
828
|
|
|
829
|
|
36
|
830 static void
|
|
|
831 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
832 {
|
|
|
833 ngx_connection_t *c;
|
|
|
834 ngx_http_request_t *r;
|
|
|
835 ngx_http_upstream_t *u;
|
|
|
836 ngx_event_pipe_t *p;
|
|
|
837
|
|
|
838 c = ev->data;
|
|
|
839 r = c->data;
|
|
|
840 u = r->upstream;
|
|
|
841
|
|
|
842 if (ev->write) {
|
|
32
|
843 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
844 "http upstream process downstream");
|
|
|
845 c->log->action = "sending to client";
|
|
28
|
846
|
|
|
847 } else {
|
|
32
|
848 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
849 "http upstream process upstream");
|
|
|
850 c->log->action = "reading upstream";
|
|
28
|
851 }
|
|
|
852
|
|
|
853 p = &u->pipe;
|
|
|
854
|
|
|
855 if (ev->timedout) {
|
|
|
856 if (ev->write) {
|
|
|
857 p->downstream_error = 1;
|
|
|
858 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
859 "client timed out");
|
|
|
860
|
|
|
861 } else {
|
|
|
862 p->upstream_error = 1;
|
|
|
863 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
864 "upstream timed out");
|
|
|
865 }
|
|
|
866
|
|
|
867 } else {
|
|
|
868 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
869 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
870 return;
|
|
|
871 }
|
|
|
872 }
|
|
|
873
|
|
|
874 if (u->peer.connection) {
|
|
|
875
|
|
|
876 #if (NGX_HTTP_FILE_CACHE)
|
|
|
877
|
|
|
878 if (p->upstream_done && u->cachable) {
|
|
|
879 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
880 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
881 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
882 return;
|
|
|
883 }
|
|
|
884
|
|
|
885 } else if (p->upstream_eof && u->cachable) {
|
|
|
886
|
|
|
887 /* TODO: check length & update cache */
|
|
|
888
|
|
|
889 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
890 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
891 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
892 return;
|
|
|
893 }
|
|
|
894 }
|
|
|
895
|
|
|
896 #endif
|
|
|
897
|
|
|
898 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
899 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
900 "http upstream exit: %p", p->out);
|
|
28
|
901 #if 0
|
|
|
902 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
903 #endif
|
|
|
904 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
905 return;
|
|
|
906 }
|
|
|
907 }
|
|
|
908
|
|
|
909 if (p->downstream_error) {
|
|
32
|
910 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
911 "http upstream downstream error");
|
|
28
|
912
|
|
|
913 if (!u->cachable && u->peer.connection) {
|
|
|
914 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
915 }
|
|
|
916 }
|
|
|
917 }
|
|
|
918
|
|
|
919
|
|
36
|
920 static void
|
|
|
921 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
922 {
|
|
|
923 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
924 "http upstream dummy handler");
|
|
|
925 }
|
|
|
926
|
|
|
927
|
|
36
|
928 static void
|
|
|
929 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
930 ngx_uint_t ft_type)
|
|
28
|
931 {
|
|
|
932 ngx_uint_t status;
|
|
|
933
|
|
|
934 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
935 "http next upstream, %xD", ft_type);
|
|
|
936
|
|
|
937 #if 0
|
|
|
938 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
939 #endif
|
|
|
940
|
|
|
941 if (ft_type != NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
942 ngx_event_connect_peer_failed(&u->peer);
|
|
|
943 }
|
|
|
944
|
|
|
945 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
946 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
947 "upstream timed out");
|
|
|
948 }
|
|
|
949
|
|
|
950 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
951 status = 0;
|
|
|
952
|
|
|
953 } else {
|
|
|
954 switch(ft_type) {
|
|
|
955
|
|
|
956 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
957 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
958 break;
|
|
|
959
|
|
|
960 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
961 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
962 break;
|
|
|
963
|
|
|
964 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
965 status = NGX_HTTP_NOT_FOUND;
|
|
|
966 break;
|
|
|
967
|
|
|
968 /*
|
|
|
969 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
970 * never reach here
|
|
|
971 */
|
|
|
972
|
|
|
973 default:
|
|
|
974 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
975 }
|
|
|
976 }
|
|
|
977
|
|
|
978 if (r->connection->write->eof) {
|
|
|
979 ngx_http_upstream_finalize_request(r, u,
|
|
|
980 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
981 return;
|
|
|
982 }
|
|
|
983
|
|
|
984 if (status) {
|
|
|
985 u->state->status = status;
|
|
|
986
|
|
|
987 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type))
|
|
|
988 {
|
|
|
989
|
|
|
990 #if (NGX_HTTP_CACHE)
|
|
|
991
|
|
|
992 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
993 ngx_http_upstream_finalize_request(r, u,
|
|
32
|
994 ngx_http_send_cached_response(r));
|
|
28
|
995 return;
|
|
|
996 }
|
|
|
997
|
|
|
998 #endif
|
|
|
999
|
|
|
1000 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1001 return;
|
|
|
1002 }
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 if (u->peer.connection) {
|
|
|
1006 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1007 "close http upstream connection: %d",
|
|
|
1008 u->peer.connection->fd);
|
|
|
1009
|
|
|
1010 ngx_close_connection(u->peer.connection);
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 #if 0
|
|
|
1014 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1015 ngx_http_upstream_busy_lock(p);
|
|
|
1016 return;
|
|
|
1017 }
|
|
|
1018 #endif
|
|
|
1019
|
|
|
1020 ngx_http_upstream_connect(r, u);
|
|
|
1021 }
|
|
|
1022
|
|
|
1023
|
|
36
|
1024 static void
|
|
|
1025 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1026 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1027 {
|
|
32
|
1028 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1029 "finalize http upstream request: %i", rc);
|
|
28
|
1030
|
|
|
1031 u->finalize_request(r, rc);
|
|
|
1032
|
|
|
1033 if (u->peer.connection) {
|
|
|
1034 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1035 "close http upstream connection: %d",
|
|
|
1036 u->peer.connection->fd);
|
|
|
1037
|
|
|
1038 ngx_close_connection(u->peer.connection);
|
|
|
1039 }
|
|
|
1040
|
|
32
|
1041 u->peer.connection = NULL;
|
|
|
1042
|
|
28
|
1043 if (u->header_sent
|
|
|
1044 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
1045 {
|
|
|
1046 rc = 0;
|
|
|
1047 }
|
|
|
1048
|
|
32
|
1049 if (u->saved_log_ctx) {
|
|
|
1050 r->connection->log->data = u->saved_log_ctx;
|
|
|
1051 r->connection->log->handler = u->saved_log_handler;
|
|
28
|
1052 }
|
|
|
1053
|
|
30
|
1054 if (u->pipe.temp_file) {
|
|
28
|
1055 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1056 "http upstream temp fd: %d",
|
|
|
1057 u->pipe.temp_file->file.fd);
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 #if 0
|
|
|
1061 if (u->cache) {
|
|
|
1062 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1063 "http upstream cache fd: %d",
|
|
28
|
1064 u->cache->ctx.file.fd);
|
|
|
1065 }
|
|
|
1066 #endif
|
|
|
1067
|
|
30
|
1068 if (u->pipe.temp_file) {
|
|
28
|
1069 r->file.fd = u->pipe.temp_file->file.fd;
|
|
|
1070
|
|
|
1071 #if 0
|
|
|
1072 } else if (u->cache) {
|
|
|
1073 r->file.fd = u->cache->ctx.file.fd;
|
|
|
1074 #endif
|
|
|
1075 }
|
|
|
1076
|
|
32
|
1077 r->connection->log->action = "sending to client";
|
|
|
1078
|
|
28
|
1079 if (rc == 0 && r->main == NULL) {
|
|
|
1080 rc = ngx_http_send_last(r);
|
|
|
1081 }
|
|
|
1082
|
|
|
1083 ngx_http_finalize_request(r, rc);
|
|
|
1084 }
|
|
|
1085
|
|
|
1086
|
|
36
|
1087 static size_t
|
|
|
1088 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
1089 {
|
|
|
1090 if (r->upstream) {
|
|
|
1091 return r->upstream->states.nelts * (3 + 2);
|
|
|
1092 }
|
|
|
1093
|
|
|
1094 return 1;
|
|
|
1095 }
|
|
|
1096
|
|
|
1097
|
|
36
|
1098 static u_char *
|
|
|
1099 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1100 ngx_http_log_op_t *op)
|
|
28
|
1101 {
|
|
|
1102 ngx_uint_t i;
|
|
|
1103 ngx_http_upstream_t *u;
|
|
|
1104 ngx_http_upstream_state_t *state;
|
|
|
1105
|
|
|
1106 u = r->upstream;
|
|
|
1107
|
|
|
1108 if (u == NULL) {
|
|
|
1109 *buf = '-';
|
|
|
1110 return buf + 1;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 i = 0;
|
|
|
1114 state = u->states.elts;
|
|
|
1115
|
|
|
1116 for ( ;; ) {
|
|
|
1117 if (state[i].status == 0) {
|
|
|
1118 *buf++ = '-';
|
|
|
1119
|
|
|
1120 } else {
|
|
|
1121 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1122 }
|
|
|
1123
|
|
|
1124 if (++i == u->states.nelts) {
|
|
|
1125 return buf;
|
|
|
1126 }
|
|
|
1127
|
|
|
1128 *buf++ = ',';
|
|
|
1129 *buf++ = ' ';
|
|
|
1130 }
|
|
|
1131 }
|
|
|
1132
|
|
|
1133
|
|
36
|
1134 u_char *
|
|
|
1135 ngx_http_upstream_log_error(ngx_log_t *log, u_char *buf, size_t len)
|
|
28
|
1136 {
|
|
|
1137 u_char *p;
|
|
56
|
1138 uintptr_t escape;
|
|
32
|
1139 ngx_http_log_ctx_t *ctx;
|
|
28
|
1140 ngx_http_request_t *r;
|
|
|
1141 ngx_http_upstream_t *u;
|
|
|
1142 ngx_peer_connection_t *peer;
|
|
|
1143
|
|
32
|
1144 ctx = log->data;
|
|
28
|
1145 r = ctx->request;
|
|
|
1146 u = r->upstream;
|
|
|
1147 peer = &u->peer;
|
|
|
1148
|
|
|
1149 p = ngx_snprintf(buf, len,
|
|
54
|
1150 " while %s, client: %V, server: %V, URL: \"%V\","
|
|
52
|
1151 " upstream: %V%V%s%V",
|
|
32
|
1152 log->action,
|
|
28
|
1153 &r->connection->addr_text,
|
|
52
|
1154 &r->server_name,
|
|
28
|
1155 &r->unparsed_uri,
|
|
56
|
1156 &u->schema0,
|
|
28
|
1157 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1158 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
56
|
1159 &u->uri0);
|
|
28
|
1160 len -= p - buf;
|
|
|
1161 buf = p;
|
|
|
1162
|
|
|
1163 if (r->quoted_uri) {
|
|
56
|
1164 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->location0->len,
|
|
|
1165 r->uri.len - u->location0->len,
|
|
28
|
1166 NGX_ESCAPE_URI);
|
|
|
1167 } else {
|
|
|
1168 escape = 0;
|
|
|
1169 }
|
|
|
1170
|
|
|
1171 if (escape) {
|
|
56
|
1172 if (len >= r->uri.len - u->location0->len + escape) {
|
|
28
|
1173
|
|
56
|
1174 ngx_escape_uri(buf, r->uri.data + u->location0->len,
|
|
|
1175 r->uri.len - u->location0->len, NGX_ESCAPE_URI);
|
|
28
|
1176
|
|
56
|
1177 buf += r->uri.len - u->location0->len + escape;
|
|
|
1178 len -= r->uri.len - u->location0->len + escape;
|
|
28
|
1179
|
|
54
|
1180 if (r->args.len) {
|
|
|
1181 p = ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1182 len -= p - buf;
|
|
|
1183 buf = p;
|
|
28
|
1184 }
|
|
|
1185
|
|
54
|
1186 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1187 }
|
|
|
1188
|
|
56
|
1189 p = ngx_palloc(r->pool, r->uri.len - u->location0->len + escape);
|
|
28
|
1190 if (p == NULL) {
|
|
|
1191 return buf;
|
|
|
1192 }
|
|
|
1193
|
|
56
|
1194 ngx_escape_uri(p, r->uri.data + u->location0->len,
|
|
|
1195 r->uri.len - u->location0->len, NGX_ESCAPE_URI);
|
|
28
|
1196
|
|
56
|
1197 p = ngx_cpymem(buf, p, r->uri.len - u->location0->len + escape);
|
|
28
|
1198
|
|
|
1199 } else {
|
|
56
|
1200 p = ngx_cpymem(buf, r->uri.data + u->location0->len,
|
|
|
1201 r->uri.len - u->location0->len);
|
|
28
|
1202 }
|
|
|
1203
|
|
54
|
1204 len -= p - buf;
|
|
|
1205 buf = p;
|
|
|
1206
|
|
|
1207 if (r->args.len) {
|
|
|
1208 p = ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1209 len -= p - buf;
|
|
|
1210 buf = p;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1214 }
|
|
|
1215
|
|
|
1216
|
|
36
|
1217 static ngx_int_t
|
|
|
1218 ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
28
|
1219 {
|
|
|
1220 ngx_http_log_op_name_t *op;
|
|
|
1221
|
|
|
1222 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1223 op->run = NULL;
|
|
|
1224
|
|
|
1225 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1226 if (op->name.len == 0) {
|
|
|
1227 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
1232
|
|
|
1233 return NGX_OK;
|
|
|
1234 }
|
