0
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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_event.h>
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10 #include <ngx_http.h>
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11
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12
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13 static void ngx_http_init_request(ngx_event_t *ev);
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14 #if (NGX_HTTP_SSL)
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15 static void ngx_http_ssl_handshake(ngx_event_t *rev);
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16 #endif
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17 static void ngx_http_process_request_line(ngx_event_t *rev);
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18 static void ngx_http_process_request_headers(ngx_event_t *rev);
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19 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r);
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20 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
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21 ngx_uint_t request_line);
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22 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r);
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26
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23 static ngx_int_t ngx_http_find_virtual_server(ngx_http_request_t *r);
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0
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24
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25 static void ngx_http_set_write_handler(ngx_http_request_t *r);
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26
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27 static void ngx_http_block_read(ngx_event_t *ev);
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28 static void ngx_http_read_discarded_body_event(ngx_event_t *rev);
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29 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r);
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30
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31 static void ngx_http_set_keepalive(ngx_http_request_t *r);
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32 static void ngx_http_keepalive_handler(ngx_event_t *ev);
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33 static void ngx_http_set_lingering_close(ngx_http_request_t *r);
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34 static void ngx_http_lingering_close_handler(ngx_event_t *ev);
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35
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36 static void ngx_http_client_error(ngx_http_request_t *r,
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37 int client_error, int error);
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10
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38 static u_char *ngx_http_log_error(void *data, u_char *buf, size_t len);
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0
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39
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40
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41 /* NGX_HTTP_PARSE_... errors */
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42
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43 static char *client_header_errors[] = {
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10
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44 "client %V sent invalid method \"%V\"",
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45 "client %V sent invalid request \"%V\"",
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46 "client %V sent too long URI in request \"%V\"",
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47 "client %V sent invalid method in HTTP/0.9 request \"%V\"",
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48
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49 "client %V sent invalid header, URL: \"%V\"",
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50 "client %V sent too long header line, URL: \"%V\"",
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51 "client %V sent HTTP/1.1 request without \"Host\" header, URL: \"%V\"",
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52 "client %V sent invalid \"Content-Length\" header, URL: \"%V\"",
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53 "client %V sent POST method without \"Content-Length\" header, URL: \"%V\"",
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0
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54 };
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55
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56
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57 ngx_http_header_t ngx_http_headers_in[] = {
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58 { ngx_string("Host"), offsetof(ngx_http_headers_in_t, host) },
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59 { ngx_string("Connection"), offsetof(ngx_http_headers_in_t, connection) },
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60 { ngx_string("If-Modified-Since"),
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61 offsetof(ngx_http_headers_in_t, if_modified_since) },
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62 { ngx_string("User-Agent"), offsetof(ngx_http_headers_in_t, user_agent) },
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63 { ngx_string("Referer"), offsetof(ngx_http_headers_in_t, referer) },
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64 { ngx_string("Content-Length"),
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65 offsetof(ngx_http_headers_in_t, content_length) },
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66
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67 { ngx_string("Range"), offsetof(ngx_http_headers_in_t, range) },
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68 #if 0
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69 { ngx_string("If-Range"), offsetof(ngx_http_headers_in_t, if_range) },
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70 #endif
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71
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72 #if (NGX_HTTP_GZIP)
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73 { ngx_string("Accept-Encoding"),
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74 offsetof(ngx_http_headers_in_t, accept_encoding) },
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75 { ngx_string("Via"), offsetof(ngx_http_headers_in_t, via) },
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76 #endif
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77
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78 { ngx_string("Authorization"),
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79 offsetof(ngx_http_headers_in_t, authorization) },
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80
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81 { ngx_string("Keep-Alive"), offsetof(ngx_http_headers_in_t, keep_alive) },
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82
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83 #if (NGX_HTTP_PROXY)
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84 { ngx_string("X-Forwarded-For"),
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85 offsetof(ngx_http_headers_in_t, x_forwarded_for) },
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6
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86 { ngx_string("X-Real-IP"), offsetof(ngx_http_headers_in_t, x_real_ip) },
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87 { ngx_string("X-URL"), offsetof(ngx_http_headers_in_t, x_url) },
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0
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88 #endif
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89
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90 { ngx_null_string, 0 }
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91 };
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92
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93
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94 #if 0
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95 static void ngx_http_dummy(ngx_event_t *wev)
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96 {
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97 return;
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98 }
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99 #endif
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100
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101
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102 void ngx_http_init_connection(ngx_connection_t *c)
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103 {
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104 ngx_event_t *rev;
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105 ngx_http_log_ctx_t *ctx;
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106
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10
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107 if (!(ctx = ngx_palloc(c->pool, sizeof(ngx_http_log_ctx_t)))) {
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0
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108 ngx_http_close_connection(c);
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109 return;
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110 }
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111
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112 ctx->connection = c->number;
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10
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113 ctx->client = &c->addr_text;
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0
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114 ctx->action = "reading client request line";
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10
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115 ctx->request = NULL;
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0
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116 c->log->data = ctx;
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117 c->log->handler = ngx_http_log_error;
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118 c->log_error = NGX_ERROR_INFO;
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119
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120 rev = c->read;
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121 rev->event_handler = ngx_http_init_request;
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122
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123 /* STUB: epoll edge */ c->write->event_handler = ngx_http_empty_handler;
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124
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125 if (rev->ready) {
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126 /* the deferred accept(), rtsig, aio, iocp */
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127
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128 if (ngx_accept_mutex) {
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129 if (ngx_mutex_lock(ngx_posted_events_mutex) == NGX_ERROR) {
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130 ngx_http_close_connection(c);
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131 return;
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132 }
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133
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134 ngx_post_event(rev);
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135
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136 ngx_mutex_unlock(ngx_posted_events_mutex);
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137 return;
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138 }
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139
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140 #if (NGX_STAT_STUB)
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141 (*ngx_stat_reading)++;
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142 #endif
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143
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144 ngx_http_init_request(rev);
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145 return;
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146 }
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147
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148 ngx_add_timer(rev, c->listening->post_accept_timeout);
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149
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150 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
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151 ngx_http_close_connection(c);
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152 return;
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153 }
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154
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155 #if 0
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156 /* TODO: learn SO_SNDBUF (to use in zerocopy) via kqueue's EV_CLEAR event */
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157
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158 c->write->ready = 0;
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159 c->write->event_handler = ngx_http_dummy;
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160
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161 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
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162 ngx_http_close_connection(c);
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163 return;
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164 }
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165 #endif
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166
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167 #if (NGX_STAT_STUB)
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168 (*ngx_stat_reading)++;
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169 #endif
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170
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171 }
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172
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173
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174 static void ngx_http_init_request(ngx_event_t *rev)
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175 {
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176 ngx_uint_t i;
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177 socklen_t len;
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178 struct sockaddr_in addr_in;
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179 ngx_connection_t *c;
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180 ngx_http_request_t *r;
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181 ngx_http_in_port_t *in_port;
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182 ngx_http_in_addr_t *in_addr;
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183 ngx_http_connection_t *hc;
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184 ngx_http_server_name_t *server_name;
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185 ngx_http_core_srv_conf_t *cscf;
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186 ngx_http_core_loc_conf_t *clcf;
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187 #if (NGX_HTTP_SSL)
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188 ngx_http_ssl_srv_conf_t *sscf;
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189 #endif
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190
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191 c = rev->data;
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192
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193 if (rev->timedout) {
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194 ngx_log_error(NGX_LOG_INFO, c->log, NGX_ETIMEDOUT, "client timed out");
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195
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196 #if (NGX_STAT_STUB)
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197 (*ngx_stat_reading)--;
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198 #endif
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199
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200 ngx_http_close_connection(c);
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201 return;
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202 }
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203
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204 hc = c->data;
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205
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206 if (hc) {
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207
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208 #if (NGX_STAT_STUB)
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209 (*ngx_stat_reading)++;
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210 #endif
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211
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212 } else {
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213 if (!(hc = ngx_pcalloc(c->pool, sizeof(ngx_http_connection_t)))) {
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214
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215 #if (NGX_STAT_STUB)
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216 (*ngx_stat_reading)--;
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217 #endif
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218
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219 ngx_http_close_connection(c);
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220 return;
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221 }
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222 }
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223
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224 r = hc->request;
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225
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226 if (r) {
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227 ngx_memzero(r, sizeof(ngx_http_request_t));
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228
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229 r->pipeline = hc->pipeline;
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230
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231 if (hc->nbusy) {
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232 r->header_in = hc->busy[0];
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233 }
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234
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235 } else {
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236 if (!(r = ngx_pcalloc(c->pool, sizeof(ngx_http_request_t)))) {
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237
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238 #if (NGX_STAT_STUB)
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239 (*ngx_stat_reading)--;
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240 #endif
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241
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242 ngx_http_close_connection(c);
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243 return;
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244 }
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245
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246 hc->request = r;
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247 }
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248
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249 #if (NGX_STAT_STUB)
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26
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250 (*ngx_stat_reading)--;
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0
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251 #endif
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252
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253 c->data = r;
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254 r->http_connection = hc;
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255
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256 c->sent = 0;
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257 r->signature = NGX_HTTP_MODULE;
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258
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259 /* find the server configuration for the address:port */
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260
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261 /* AF_INET only */
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262
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263 in_port = c->servers;
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264 in_addr = in_port->addrs.elts;
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265
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266 r->port = in_port->port;
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267 r->port_text = &in_port->port_text;
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268
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269 i = 0;
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270
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271 if (in_port->addrs.nelts > 1) {
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272
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273 /*
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274 * There are several addresses on this port and one of them
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275 * is the "*:port" wildcard so getsockname() is needed to determine
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276 * the server address.
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277 *
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278 * AcceptEx() already gave this address.
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279 */
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280
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10
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281 #if (NGX_WIN32)
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0
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282 if (c->local_sockaddr) {
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283 r->in_addr =
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284 ((struct sockaddr_in *) c->local_sockaddr)->sin_addr.s_addr;
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285
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286 } else {
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287 #endif
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288 len = sizeof(struct sockaddr_in);
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289 if (getsockname(c->fd, (struct sockaddr *) &addr_in, &len) == -1) {
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290 ngx_connection_error(c, ngx_socket_errno,
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291 "getsockname() failed");
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292 ngx_http_close_connection(c);
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293 return;
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294 }
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295
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296 r->in_addr = addr_in.sin_addr.s_addr;
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297
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10
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298 #if (NGX_WIN32)
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0
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299 }
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300 #endif
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301
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302 /* the last in_port->addrs address is "*" */
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303
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304 for ( /* void */ ; i < in_port->addrs.nelts - 1; i++) {
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305 if (in_addr[i].addr == r->in_addr) {
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306 break;
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307 }
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308 }
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309
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310 } else {
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311 r->in_addr = in_addr[0].addr;
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312 }
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313
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26
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314 r->virtual_names = &in_addr[i];
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0
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315
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316 /* the default server configuration for the address:port */
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317 cscf = in_addr[i].core_srv_conf;
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318
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319 r->main_conf = cscf->ctx->main_conf;
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320 r->srv_conf = cscf->ctx->srv_conf;
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321 r->loc_conf = cscf->ctx->loc_conf;
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322
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323 rev->event_handler = ngx_http_process_request_line;
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324
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325 #if (NGX_HTTP_SSL)
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326
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327 sscf = ngx_http_get_module_srv_conf(r, ngx_http_ssl_module);
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328 if (sscf->enable) {
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329
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330 if (c->ssl == NULL) {
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331 if (ngx_ssl_create_session(sscf->ssl_ctx, c, NGX_SSL_BUFFER)
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332 == NGX_ERROR)
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333 {
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334 ngx_http_close_connection(c);
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335 return;
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336 }
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337
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26
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338 rev->event_handler = ngx_http_ssl_handshake;
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339
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0
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340 /*
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341 * The majority of browsers do not send the "close notify" alert.
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342 * Among them are MSIE, Mozilla, Netscape 4, Konqueror, and Links.
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343 * And what is more MSIE ignores the server's alert.
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344 *
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345 * Opera always sends the alert.
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346 */
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347
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348 c->ssl->no_rcv_shut = 1;
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349 }
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350
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351 r->filter_need_in_memory = 1;
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352 }
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353
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354 #endif
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355
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356 server_name = cscf->server_names.elts;
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6
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357 r->server_name = server_name->name;
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0
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358
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359 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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360 c->log->file = clcf->err_log->file;
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361 if (!(c->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
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362 c->log->log_level = clcf->err_log->log_level;
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363 }
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364
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365 if (c->buffer == NULL) {
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366 c->buffer = ngx_create_temp_buf(c->pool,
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367 cscf->client_header_buffer_size);
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368 if (c->buffer == NULL) {
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369 ngx_http_close_connection(c);
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370 return;
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371 }
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372 }
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373
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374 if (r->header_in == NULL) {
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375 r->header_in = c->buffer;
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376 }
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377
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378 if (!(r->pool = ngx_create_pool(cscf->request_pool_size, c->log))) {
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379 ngx_http_close_connection(c);
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380 return;
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381 }
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382
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383 if (ngx_array_init(&r->cleanup, r->pool, 5, sizeof(ngx_http_cleanup_t))
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384 == NGX_ERROR)
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385 {
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386 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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387 ngx_http_close_connection(c);
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388 return;
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389 }
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390
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391
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392 if (ngx_list_init(&r->headers_out.headers, r->pool, 20,
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393 sizeof(ngx_table_elt_t)) == NGX_ERROR)
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394 {
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395 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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396 ngx_http_close_connection(c);
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397 return;
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398 }
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399
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400
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401 r->ctx = ngx_pcalloc(r->pool, sizeof(void *) * ngx_http_max_module);
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402 if (r->ctx == NULL) {
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403 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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404 ngx_http_close_connection(c);
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405 return;
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406 }
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407
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408 c->single_connection = 1;
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409 r->connection = c;
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410
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411 r->file.fd = NGX_INVALID_FILE;
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412
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413 r->headers_in.content_length_n = -1;
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414 r->headers_in.keep_alive_n = -1;
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415 r->headers_out.content_length_n = -1;
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416 r->headers_out.last_modified_time = -1;
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417
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418 r->http_state = NGX_HTTP_READING_REQUEST_STATE;
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419
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420 #if (NGX_STAT_STUB)
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26
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421 (*ngx_stat_reading)++;
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422 r->stat_reading = 1;
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0
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423 (*ngx_stat_requests)++;
|
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424 #endif
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425
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426 rev->event_handler(rev);
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427 }
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428
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429
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430 #if (NGX_HTTP_SSL)
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431
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432 static void ngx_http_ssl_handshake(ngx_event_t *rev)
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433 {
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10
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434 u_char buf[1];
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435 ssize_t n;
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0
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436 ngx_int_t rc;
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437 ngx_connection_t *c;
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438 ngx_http_request_t *r;
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439
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440 c = rev->data;
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441 r = c->data;
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442
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443 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
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444 "http check ssl handshake");
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445
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446 if (rev->timedout) {
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447 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
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448 return;
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449 }
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450
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451 n = recv(c->fd, buf, 1, MSG_PEEK);
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452
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453 if (n == -1 && ngx_socket_errno == NGX_EAGAIN) {
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454 return;
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455 }
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456
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457 if (n == 1) {
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458 if (buf[0] == 0x80 /* SSLv2 */ || buf[0] == 0x16 /* SSLv3/TLSv1 */) {
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459 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
10
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460 "https ssl handshake: 0x%02Xd", buf[0]);
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0
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461
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462 c->recv = ngx_ssl_recv;
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463 c->send_chain = ngx_ssl_send_chain;
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464
|
|
465 rc = ngx_ssl_handshake(c);
|
|
466
|
|
467 if (rc == NGX_ERROR) {
|
|
468 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
469 ngx_http_close_connection(r->connection);
|
|
470 return;
|
|
471 }
|
|
472
|
|
473 if (rc != NGX_OK) {
|
|
474 return;
|
|
475 }
|
|
476
|
|
477 } else {
|
|
478 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
479 "plain http");
|
|
480
|
|
481 r->plain_http = 1;
|
|
482 }
|
|
483 }
|
|
484
|
|
485 rev->event_handler = ngx_http_process_request_line;
|
|
486 ngx_http_process_request_line(rev);
|
|
487 }
|
|
488
|
|
489 #endif
|
|
490
|
|
491
|
|
492 static void ngx_http_process_request_line(ngx_event_t *rev)
|
|
493 {
|
|
494 ssize_t n;
|
|
495 ngx_int_t rc, rv;
|
|
496 ngx_connection_t *c;
|
|
497 ngx_http_request_t *r;
|
|
498 ngx_http_log_ctx_t *ctx;
|
|
499
|
|
500 c = rev->data;
|
|
501 r = c->data;
|
|
502
|
|
503 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
504 "http process request line");
|
|
505
|
|
506 if (rev->timedout) {
|
|
507 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
508 return;
|
|
509 }
|
|
510
|
|
511 rc = NGX_AGAIN;
|
|
512
|
|
513 for ( ;; ) {
|
|
514
|
|
515 if (rc == NGX_AGAIN) {
|
|
516 n = ngx_http_read_request_header(r);
|
|
517
|
|
518 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
519 return;
|
|
520 }
|
|
521 }
|
|
522
|
|
523 rc = ngx_http_parse_request_line(r, r->header_in);
|
|
524
|
|
525 if (rc == NGX_OK) {
|
|
526
|
|
527 /* the request line has been parsed successfully */
|
|
528
|
10
|
529 r->request_line.len = r->request_end - r->request_start;
|
|
530 r->request_line.data = r->request_start;
|
|
531
|
0
|
532
|
|
533 if (r->args_start) {
|
|
534 r->uri.len = r->args_start - 1 - r->uri_start;
|
|
535 } else {
|
|
536 r->uri.len = r->uri_end - r->uri_start;
|
|
537 }
|
|
538
|
18
|
539
|
2
|
540 if (r->complex_uri || r->quoted_uri) {
|
10
|
541
|
|
542 if (!(r->uri.data = ngx_palloc(r->pool, r->uri.len + 1))) {
|
|
543 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
544 ngx_http_close_connection(c);
|
|
545 return;
|
|
546 }
|
|
547
|
0
|
548 rc = ngx_http_parse_complex_uri(r);
|
|
549
|
|
550 if (rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
551 ngx_http_close_request(r, rc);
|
|
552 ngx_http_close_connection(c);
|
|
553 return;
|
|
554 }
|
|
555
|
|
556 if (rc != NGX_OK) {
|
|
557 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
558 return;
|
|
559 }
|
|
560
|
|
561 } else {
|
10
|
562 r->uri.data = r->uri_start;
|
0
|
563 }
|
|
564
|
18
|
565
|
10
|
566 r->unparsed_uri.len = r->uri_end - r->uri_start;
|
|
567 r->unparsed_uri.data = r->uri_start;
|
|
568
|
0
|
569
|
|
570 if (r->method == 0) {
|
|
571 r->method_name.len = r->method_end - r->request_start + 1;
|
|
572 r->method_name.data = r->request_line.data;
|
|
573 }
|
|
574
|
10
|
575
|
0
|
576 if (r->uri_ext) {
|
|
577 if (r->args_start) {
|
|
578 r->exten.len = r->args_start - 1 - r->uri_ext;
|
|
579 } else {
|
|
580 r->exten.len = r->uri_end - r->uri_ext;
|
|
581 }
|
|
582
|
10
|
583 r->exten.data = r->uri_ext;
|
0
|
584 }
|
|
585
|
10
|
586
|
0
|
587 if (r->args_start && r->uri_end > r->args_start) {
|
|
588 r->args.len = r->uri_end - r->args_start;
|
10
|
589 r->args.data = r->args_start;
|
0
|
590 }
|
|
591
|
10
|
592
|
|
593 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
594 "http request line: \"%V\"", &r->request_line);
|
|
595
|
0
|
596 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
10
|
597 "http uri: \"%V\"", &r->uri);
|
0
|
598
|
|
599 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
10
|
600 "http args: \"%V\"", &r->args);
|
0
|
601
|
|
602 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
10
|
603 "http exten: \"%V\"", &r->exten);
|
|
604
|
|
605 ctx = c->log->data;
|
|
606 ctx->request = r;
|
0
|
607
|
|
608 if (r->http_version < NGX_HTTP_VERSION_10) {
|
|
609 rev->event_handler = ngx_http_block_read;
|
|
610 ngx_http_handler(r);
|
|
611 return;
|
|
612 }
|
|
613
|
|
614
|
|
615 if (ngx_list_init(&r->headers_in.headers, r->pool, 20,
|
|
616 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
617 {
|
|
618 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
619 ngx_http_close_connection(c);
|
|
620 return;
|
|
621 }
|
|
622
|
|
623
|
|
624 if (ngx_array_init(&r->headers_in.cookies, r->pool, 5,
|
|
625 sizeof(ngx_table_elt_t *)) == NGX_ERROR)
|
|
626 {
|
|
627 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
628 ngx_http_close_connection(c);
|
|
629 return;
|
|
630 }
|
|
631
|
|
632 ctx->action = "reading client request headers";
|
|
633
|
|
634 rev->event_handler = ngx_http_process_request_headers;
|
|
635 ngx_http_process_request_headers(rev);
|
|
636
|
|
637 return;
|
|
638
|
|
639 } else if (rc != NGX_AGAIN) {
|
|
640
|
|
641 /* there was error while a request line parsing */
|
|
642
|
10
|
643 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
644
|
|
645 #if 0
|
0
|
646 for (p = r->request_start; p < r->header_in->last; p++) {
|
|
647 if (*p == CR || *p == LF) {
|
|
648 break;
|
|
649 }
|
|
650 }
|
|
651
|
|
652 r->request_line.len = p - r->request_start;
|
|
653 r->request_line.data = r->request_start;
|
|
654
|
|
655 if (rc == NGX_HTTP_PARSE_INVALID_METHOD) {
|
|
656 r->http_version = NGX_HTTP_VERSION_10;
|
|
657 }
|
|
658
|
|
659 ngx_http_client_error(r, rc,
|
|
660 (rc == NGX_HTTP_PARSE_INVALID_METHOD) ?
|
|
661 NGX_HTTP_NOT_IMPLEMENTED:
|
|
662 NGX_HTTP_BAD_REQUEST);
|
10
|
663 #endif
|
|
664
|
0
|
665 return;
|
|
666 }
|
|
667
|
|
668 /* NGX_AGAIN: a request line parsing is still incomplete */
|
|
669
|
|
670 if (r->header_in->pos == r->header_in->end) {
|
|
671
|
|
672 rv = ngx_http_alloc_large_header_buffer(r, 1);
|
|
673
|
|
674 if (rv == NGX_ERROR) {
|
|
675 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
676 ngx_http_close_connection(c);
|
|
677 return;
|
|
678 }
|
|
679
|
|
680 if (rv == NGX_DECLINED) {
|
|
681 ngx_http_client_error(r, NGX_HTTP_PARSE_TOO_LONG_URI,
|
|
682 NGX_HTTP_REQUEST_URI_TOO_LARGE);
|
|
683 return;
|
|
684 }
|
|
685 }
|
|
686 }
|
|
687 }
|
|
688
|
|
689
|
|
690 static void ngx_http_process_request_headers(ngx_event_t *rev)
|
|
691 {
|
|
692 ssize_t n;
|
|
693 ngx_int_t rc, rv, i;
|
|
694 ngx_table_elt_t *h, **cookie;
|
|
695 ngx_connection_t *c;
|
|
696 ngx_http_request_t *r;
|
|
697
|
|
698 c = rev->data;
|
|
699 r = c->data;
|
|
700
|
|
701 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
702 "http process request header line");
|
|
703
|
|
704 if (rev->timedout) {
|
|
705 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
706 return;
|
|
707 }
|
|
708
|
|
709 rc = NGX_AGAIN;
|
|
710
|
|
711 for ( ;; ) {
|
|
712
|
|
713 if (rc == NGX_AGAIN) {
|
|
714
|
|
715 if (r->header_in->pos == r->header_in->end) {
|
|
716
|
|
717 rv = ngx_http_alloc_large_header_buffer(r, 0);
|
|
718
|
|
719 if (rv == NGX_ERROR) {
|
|
720 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
721 ngx_http_close_connection(c);
|
|
722 return;
|
|
723 }
|
|
724
|
|
725 if (rv == NGX_DECLINED) {
|
|
726 ngx_http_client_error(r, NGX_HTTP_PARSE_TOO_LONG_HEADER,
|
|
727 NGX_HTTP_BAD_REQUEST);
|
|
728 return;
|
|
729 }
|
|
730 }
|
|
731
|
|
732 n = ngx_http_read_request_header(r);
|
|
733
|
|
734 if (n == NGX_AGAIN || n == NGX_ERROR) {
|
|
735 return;
|
|
736 }
|
|
737 }
|
|
738
|
|
739 rc = ngx_http_parse_header_line(r, r->header_in);
|
|
740
|
|
741 if (rc == NGX_OK) {
|
|
742
|
|
743 /* a header line has been parsed successfully */
|
|
744
|
|
745 r->headers_n++;
|
|
746
|
|
747 if (!(h = ngx_list_push(&r->headers_in.headers))) {
|
|
748 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
749 ngx_http_close_connection(c);
|
|
750 return;
|
|
751 }
|
|
752
|
|
753 h->key.len = r->header_name_end - r->header_name_start;
|
|
754 h->key.data = r->header_name_start;
|
|
755 h->key.data[h->key.len] = '\0';
|
|
756
|
|
757 h->value.len = r->header_end - r->header_start;
|
|
758 h->value.data = r->header_start;
|
|
759 h->value.data[h->value.len] = '\0';
|
|
760
|
|
761 if (h->key.len == sizeof("Cookie") - 1
|
|
762 && ngx_strcasecmp(h->key.data, "Cookie") == 0)
|
|
763 {
|
|
764 if (!(cookie = ngx_array_push(&r->headers_in.cookies))) {
|
|
765 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
766 ngx_http_close_connection(c);
|
|
767 return;
|
|
768 }
|
|
769
|
|
770 *cookie = h;
|
|
771
|
|
772 } else {
|
|
773
|
|
774 for (i = 0; ngx_http_headers_in[i].name.len != 0; i++) {
|
|
775 if (ngx_http_headers_in[i].name.len != h->key.len) {
|
|
776 continue;
|
|
777 }
|
|
778
|
|
779 if (ngx_strcasecmp(ngx_http_headers_in[i].name.data,
|
|
780 h->key.data) == 0)
|
|
781 {
|
|
782 *((ngx_table_elt_t **) ((char *) &r->headers_in
|
|
783 + ngx_http_headers_in[i].offset)) = h;
|
|
784 break;
|
|
785 }
|
|
786 }
|
|
787 }
|
|
788
|
|
789 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
10
|
790 "http header: \"%V: %V\"",
|
|
791 &h->key, &h->value);
|
0
|
792
|
|
793 continue;
|
|
794
|
|
795 } else if (rc == NGX_HTTP_PARSE_HEADER_DONE) {
|
|
796
|
|
797 /* a whole header has been parsed successfully */
|
|
798
|
|
799 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
800 "http header done");
|
|
801
|
24
|
802 r->request_length += r->header_in->pos - r->header_in->start;
|
|
803
|
0
|
804 r->http_state = NGX_HTTP_PROCESS_REQUEST_STATE;
|
|
805
|
|
806 rc = ngx_http_process_request_header(r);
|
|
807
|
|
808 if (rc != NGX_OK) {
|
|
809 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
810 return;
|
|
811 }
|
|
812
|
|
813 if (rev->timer_set) {
|
|
814 ngx_del_timer(rev);
|
|
815 }
|
|
816
|
|
817 #if (NGX_STAT_STUB)
|
|
818 (*ngx_stat_reading)--;
|
|
819 r->stat_reading = 0;
|
|
820 (*ngx_stat_writing)++;
|
|
821 r->stat_writing = 1;
|
|
822 #endif
|
|
823
|
|
824 rev->event_handler = ngx_http_block_read;
|
|
825 ngx_http_handler(r);
|
|
826 return;
|
|
827
|
|
828 } else if (rc != NGX_AGAIN) {
|
|
829
|
|
830 /* there was error while a header line parsing */
|
|
831
|
|
832 #if (NGX_DEBUG)
|
|
833 if (rc == NGX_HTTP_PARSE_INVALID_HEADER
|
|
834 && (rev->log->log_level & NGX_LOG_DEBUG_HTTP))
|
|
835 {
|
|
836 u_char *p;
|
|
837 for (p = r->header_name_start;
|
|
838 p < r->header_in->last - 1;
|
|
839 p++)
|
|
840 {
|
|
841 if (*p == LF) {
|
|
842 break;
|
|
843 }
|
|
844 }
|
|
845 *p = '\0';
|
|
846 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
847 "http invalid header: \"%s\"",
|
|
848 r->header_name_start);
|
|
849 }
|
|
850 #endif
|
|
851
|
|
852 ngx_http_client_error(r, rc, NGX_HTTP_BAD_REQUEST);
|
|
853 return;
|
|
854 }
|
|
855
|
|
856 /* NGX_AGAIN: a header line parsing is still not complete */
|
|
857
|
|
858 }
|
|
859 }
|
|
860
|
|
861
|
|
862 static ssize_t ngx_http_read_request_header(ngx_http_request_t *r)
|
|
863 {
|
|
864 ssize_t n;
|
|
865 ngx_event_t *rev;
|
|
866 ngx_http_core_srv_conf_t *cscf;
|
|
867
|
|
868 rev = r->connection->read;
|
|
869
|
|
870 n = r->header_in->last - r->header_in->pos;
|
|
871
|
|
872 if (n > 0) {
|
|
873 return n;
|
|
874 }
|
|
875
|
|
876 if (!rev->ready) {
|
|
877 return NGX_AGAIN;
|
|
878 }
|
|
879
|
|
880 n = r->connection->recv(r->connection, r->header_in->last,
|
|
881 r->header_in->end - r->header_in->last);
|
|
882
|
|
883 if (n == NGX_AGAIN) {
|
|
884 if (!r->header_timeout_set) {
|
|
885 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
886 ngx_add_timer(rev, cscf->client_header_timeout);
|
|
887 r->header_timeout_set = 1;
|
|
888 }
|
|
889
|
|
890 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
891 ngx_http_close_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
892 ngx_http_close_connection(r->connection);
|
|
893 return NGX_ERROR;
|
|
894 }
|
|
895
|
|
896 return NGX_AGAIN;
|
|
897 }
|
|
898
|
|
899 if (n == 0) {
|
|
900 ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
|
|
901 "client closed prematurely connection");
|
|
902 }
|
|
903
|
|
904 if (n == 0 || n == NGX_ERROR) {
|
|
905 ngx_http_close_request(r, NGX_HTTP_BAD_REQUEST);
|
|
906 ngx_http_close_connection(r->connection);
|
|
907 return NGX_ERROR;
|
|
908 }
|
|
909
|
|
910 r->header_in->last += n;
|
|
911
|
|
912 return n;
|
|
913 }
|
|
914
|
|
915
|
|
916 static ngx_int_t ngx_http_alloc_large_header_buffer(ngx_http_request_t *r,
|
|
917 ngx_uint_t request_line)
|
|
918 {
|
|
919 u_char *old, *new;
|
|
920 ngx_buf_t *b;
|
|
921 ngx_http_connection_t *hc;
|
|
922 ngx_http_core_srv_conf_t *cscf;
|
|
923
|
|
924 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
925 "http alloc large header buffer");
|
|
926
|
|
927 if (request_line && r->state == 0) {
|
|
928
|
|
929 /* the client fills up the buffer with "\r\n" */
|
|
930
|
24
|
931 r->request_length += r->header_in->end - r->header_in->start;
|
|
932
|
0
|
933 r->header_in->pos = r->header_in->start;
|
|
934 r->header_in->last = r->header_in->start;
|
|
935
|
|
936 return NGX_OK;
|
|
937 }
|
|
938
|
|
939 old = request_line ? r->request_start : r->header_name_start;
|
|
940
|
|
941 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
942
|
|
943 if (r->state != 0
|
|
944 && (size_t) (r->header_in->pos - old)
|
|
945 >= cscf->large_client_header_buffers.size)
|
|
946 {
|
|
947 return NGX_DECLINED;
|
|
948 }
|
|
949
|
|
950 hc = r->http_connection;
|
|
951
|
|
952 if (hc->nfree) {
|
|
953 b = hc->free[--hc->nfree];
|
|
954
|
|
955 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
10
|
956 "http large header free: %p %uz",
|
0
|
957 b->pos, b->end - b->last);
|
|
958
|
|
959 } else if (hc->nbusy < cscf->large_client_header_buffers.num) {
|
|
960
|
|
961 if (hc->busy == NULL) {
|
|
962 hc->busy = ngx_palloc(r->connection->pool,
|
|
963 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
964 if (hc->busy == NULL) {
|
|
965 return NGX_ERROR;
|
|
966 }
|
|
967 }
|
|
968
|
|
969 b = ngx_create_temp_buf(r->connection->pool,
|
|
970 cscf->large_client_header_buffers.size);
|
|
971 if (b == NULL) {
|
|
972 return NGX_ERROR;
|
|
973 }
|
|
974
|
|
975 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
10
|
976 "http large header alloc: %p %uz",
|
0
|
977 b->pos, b->end - b->last);
|
|
978
|
|
979 } else {
|
|
980 return NGX_DECLINED;
|
|
981 }
|
|
982
|
|
983 hc->busy[hc->nbusy++] = b;
|
|
984
|
|
985 if (r->state == 0) {
|
|
986 /*
|
|
987 * r->state == 0 means that a header line was parsed successfully
|
|
988 * and we do not need to copy incomplete header line and
|
|
989 * to relocate the parser header pointers
|
|
990 */
|
|
991
|
24
|
992 r->request_length += r->header_in->end - r->header_in->start;
|
|
993
|
0
|
994 r->header_in = b;
|
|
995
|
|
996 return NGX_OK;
|
|
997 }
|
|
998
|
|
999 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1000 "http large header copy: %d", r->header_in->pos - old);
|
|
1001
|
24
|
1002 r->request_length += old - r->header_in->start;
|
|
1003
|
0
|
1004 new = b->start;
|
|
1005
|
|
1006 ngx_memcpy(new, old, r->header_in->pos - old);
|
|
1007
|
|
1008 b->pos = new + (r->header_in->pos - old);
|
|
1009 b->last = new + (r->header_in->pos - old);
|
|
1010
|
|
1011 if (request_line) {
|
|
1012 r->request_start = new;
|
|
1013
|
|
1014 if (r->request_end) {
|
|
1015 r->request_end = new + (r->request_end - old);
|
|
1016 }
|
|
1017
|
|
1018 r->method_end = new + (r->method_end - old);
|
|
1019
|
|
1020 r->uri_start = new + (r->uri_start - old);
|
|
1021 r->uri_end = new + (r->uri_end - old);
|
|
1022
|
|
1023 if (r->schema_start) {
|
|
1024 r->schema_start = new + (r->schema_start - old);
|
|
1025 r->schema_end = new + (r->schema_end - old);
|
|
1026 }
|
|
1027
|
|
1028 if (r->host_start) {
|
|
1029 r->host_start = new + (r->host_start - old);
|
|
1030 r->host_end = new + (r->host_end - old);
|
|
1031 }
|
|
1032
|
|
1033 if (r->port_start) {
|
|
1034 r->port_start = new + (r->port_start - old);
|
|
1035 r->port_end = new + (r->port_end - old);
|
|
1036 }
|
|
1037
|
|
1038 if (r->uri_ext) {
|
|
1039 r->uri_ext = new + (r->uri_ext - old);
|
|
1040 }
|
|
1041
|
|
1042 if (r->args_start) {
|
|
1043 r->args_start = new + (r->args_start - old);
|
|
1044 }
|
|
1045
|
|
1046 } else {
|
|
1047 r->header_name_start = new;
|
|
1048 r->header_name_end = new + (r->header_name_end - old);
|
|
1049 r->header_start = new + (r->header_start - old);
|
|
1050 r->header_end = new + (r->header_end - old);
|
|
1051 }
|
|
1052
|
|
1053 r->header_in = b;
|
|
1054
|
|
1055 return NGX_OK;
|
|
1056 }
|
|
1057
|
|
1058
|
|
1059 static ngx_int_t ngx_http_process_request_header(ngx_http_request_t *r)
|
|
1060 {
|
26
|
1061 u_char *ua, *user_agent, ch;
|
|
1062 size_t len;
|
0
|
1063
|
|
1064 if (r->headers_in.host) {
|
|
1065 for (len = 0; len < r->headers_in.host->value.len; len++) {
|
26
|
1066 ch = r->headers_in.host->value.data[len];
|
|
1067
|
|
1068 if (ch == ':') {
|
0
|
1069 break;
|
|
1070 }
|
26
|
1071
|
|
1072 r->headers_in.host->value.data[len] = ngx_tolower(ch);
|
0
|
1073 }
|
|
1074 r->headers_in.host_name_len = len;
|
|
1075
|
26
|
1076 if (ngx_http_find_virtual_server(r) != NGX_OK) {
|
|
1077 return NGX_HTTP_PARSE_INVALID_HOST;
|
0
|
1078 }
|
|
1079
|
|
1080 } else {
|
|
1081 if (r->http_version > NGX_HTTP_VERSION_10) {
|
|
1082 return NGX_HTTP_PARSE_NO_HOST_HEADER;
|
|
1083 }
|
|
1084 r->headers_in.host_name_len = 0;
|
|
1085 }
|
|
1086
|
|
1087 if (r->headers_in.content_length) {
|
|
1088 r->headers_in.content_length_n =
|
|
1089 ngx_atoi(r->headers_in.content_length->value.data,
|
|
1090 r->headers_in.content_length->value.len);
|
|
1091
|
|
1092 if (r->headers_in.content_length_n == NGX_ERROR) {
|
|
1093 return NGX_HTTP_PARSE_INVALID_CL_HEADER;
|
|
1094 }
|
|
1095 }
|
|
1096
|
|
1097 if (r->method == NGX_HTTP_POST && r->headers_in.content_length_n <= 0) {
|
|
1098 return NGX_HTTP_PARSE_POST_WO_CL_HEADER;
|
|
1099 }
|
|
1100
|
|
1101 if (r->plain_http) {
|
|
1102 return NGX_HTTP_PARSE_HTTP_TO_HTTPS;
|
|
1103 }
|
|
1104
|
|
1105 if (r->headers_in.connection) {
|
|
1106 if (r->headers_in.connection->value.len == 5
|
|
1107 && ngx_strcasecmp(r->headers_in.connection->value.data, "close")
|
|
1108 == 0)
|
|
1109 {
|
|
1110 r->headers_in.connection_type = NGX_HTTP_CONNECTION_CLOSE;
|
|
1111
|
|
1112 } else if (r->headers_in.connection->value.len == 10
|
|
1113 && ngx_strcasecmp(r->headers_in.connection->value.data,
|
|
1114 "keep-alive") == 0)
|
|
1115 {
|
|
1116 r->headers_in.connection_type = NGX_HTTP_CONNECTION_KEEP_ALIVE;
|
|
1117
|
|
1118 if (r->headers_in.keep_alive) {
|
|
1119 r->headers_in.keep_alive_n =
|
|
1120 ngx_atoi(r->headers_in.keep_alive->value.data,
|
|
1121 r->headers_in.keep_alive->value.len);
|
|
1122 }
|
|
1123 }
|
|
1124 }
|
|
1125
|
|
1126 if (r->headers_in.user_agent) {
|
|
1127
|
|
1128 /*
|
|
1129 * check some widespread browsers while the headers are still
|
|
1130 * in CPU cache
|
|
1131 */
|
|
1132
|
|
1133 user_agent = r->headers_in.user_agent->value.data;
|
|
1134
|
|
1135 ua = (u_char *) ngx_strstr(user_agent, "MSIE");
|
|
1136
|
|
1137 if (ua && ua + 8 < user_agent + r->headers_in.user_agent->value.len) {
|
|
1138
|
|
1139 r->headers_in.msie = 1;
|
|
1140
|
|
1141 if (ua[4] == ' ' && ua[5] == '4' && ua[6] == '.') {
|
|
1142 r->headers_in.msie4 = 1;
|
|
1143 }
|
|
1144
|
|
1145 #if 0
|
|
1146 /* MSIE ignores the SSL "close notify" alert */
|
22
|
1147 if (c->ssl) {
|
|
1148 r->connection->ssl->no_send_shut = 1;
|
|
1149 }
|
0
|
1150 #endif
|
|
1151 }
|
|
1152
|
|
1153 if (ngx_strstr(user_agent, "Opera")) {
|
|
1154 r->headers_in.opera = 1;
|
|
1155 r->headers_in.msie = 0;
|
|
1156 r->headers_in.msie4 = 0;
|
|
1157 }
|
|
1158
|
|
1159 if (!r->headers_in.msie && !r->headers_in.opera) {
|
|
1160
|
|
1161 if (ngx_strstr(user_agent, "Gecko/")) {
|
|
1162 r->headers_in.gecko = 1;
|
|
1163
|
|
1164 } else if (ngx_strstr(user_agent, "Konqueror")) {
|
|
1165 r->headers_in.konqueror = 1;
|
|
1166 }
|
|
1167 }
|
|
1168 }
|
|
1169
|
|
1170 return NGX_OK;
|
|
1171 }
|
|
1172
|
|
1173
|
26
|
1174 static ngx_int_t ngx_http_find_virtual_server(ngx_http_request_t *r)
|
|
1175 {
|
|
1176 ngx_int_t rc;
|
|
1177 ngx_uint_t i, n, key, found;
|
|
1178 ngx_http_server_name_t *name;
|
|
1179 ngx_http_core_main_conf_t *cmcf;
|
|
1180 ngx_http_core_srv_conf_t *cscf;
|
|
1181 ngx_http_core_loc_conf_t *clcf;
|
|
1182
|
|
1183 if (r->virtual_names->hash) {
|
|
1184 cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
|
|
1185
|
|
1186 ngx_http_server_names_hash_key(key,
|
|
1187 r->headers_in.host->value.data,
|
|
1188 r->headers_in.host_name_len,
|
|
1189 cmcf->server_names_hash);
|
|
1190
|
|
1191 name = r->virtual_names->hash[key].elts;
|
|
1192 n = r->virtual_names->hash[key].nelts;
|
|
1193
|
|
1194 } else {
|
|
1195 name = r->virtual_names->names.elts;
|
|
1196 n = r->virtual_names->names.nelts;
|
|
1197 }
|
|
1198
|
|
1199 found = 0;
|
|
1200
|
|
1201 for (i = 0; i < n; i++) {
|
|
1202
|
|
1203 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1204 "server name: %V", &name[i].name);
|
|
1205
|
|
1206 if (r->headers_in.host_name_len != name[i].name.len) {
|
|
1207 continue;
|
|
1208 }
|
|
1209
|
|
1210 rc = ngx_strncmp(r->headers_in.host->value.data,
|
|
1211 name[i].name.data, name[i].name.len);
|
|
1212
|
|
1213 if (rc == 0) {
|
|
1214 r->server_name = name[i].name;
|
|
1215
|
|
1216 found = 1;
|
|
1217 break;
|
|
1218 }
|
|
1219
|
|
1220 if (rc < 0) {
|
|
1221 /* the server names are lexicographically sorted */
|
|
1222 break;
|
|
1223 }
|
|
1224 }
|
|
1225
|
|
1226 if (!found && r->virtual_names->wildcards.nelts) {
|
|
1227
|
|
1228 name = r->virtual_names->wildcards.elts;
|
|
1229 for (i = 0; i < r->virtual_names->wildcards.nelts; i++) {
|
|
1230
|
|
1231 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1232 "server name: %V", &name[i].name);
|
|
1233
|
|
1234 if (r->headers_in.host_name_len <= name[i].name.len) {
|
|
1235 continue;
|
|
1236 }
|
|
1237
|
|
1238 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1239 "server name: %s",
|
|
1240 r->headers_in.host->value.data
|
|
1241 + (r->headers_in.host_name_len - name[i].name.len));
|
|
1242
|
|
1243 if (ngx_strncmp(r->headers_in.host->value.data
|
|
1244 + (r->headers_in.host_name_len - name[i].name.len),
|
|
1245 name[i].name.data, name[i].name.len) == 0)
|
|
1246 {
|
|
1247 r->server_name.len = r->headers_in.host_name_len;
|
|
1248 r->server_name.data = r->headers_in.host->value.data;
|
|
1249
|
|
1250 found = 1;
|
|
1251 break;
|
|
1252 }
|
|
1253 }
|
|
1254 }
|
|
1255
|
|
1256 if (found) {
|
|
1257 r->srv_conf = name[i].core_srv_conf->ctx->srv_conf;
|
|
1258 r->loc_conf = name[i].core_srv_conf->ctx->loc_conf;
|
|
1259
|
|
1260 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1261 r->connection->log->file = clcf->err_log->file;
|
|
1262
|
|
1263 if (!(r->connection->log->log_level & NGX_LOG_DEBUG_CONNECTION)) {
|
|
1264 r->connection->log->log_level = clcf->err_log->log_level;
|
|
1265 }
|
|
1266
|
|
1267 return NGX_OK;
|
|
1268 }
|
|
1269
|
|
1270 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
1271
|
|
1272 if (cscf->restrict_host_names != NGX_HTTP_RESTRICT_HOST_OFF) {
|
|
1273 return NGX_ERROR;
|
|
1274 }
|
|
1275
|
|
1276 return NGX_OK;
|
|
1277 }
|
|
1278
|
|
1279
|
0
|
1280 void ngx_http_finalize_request(ngx_http_request_t *r, int rc)
|
|
1281 {
|
|
1282 ngx_http_core_loc_conf_t *clcf;
|
|
1283
|
26
|
1284 /* r may be already destroyed when rc == NGX_DONE */
|
0
|
1285
|
|
1286 if (rc == NGX_DONE || r->main) {
|
|
1287 return;
|
|
1288 }
|
|
1289
|
|
1290 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1291 "http finalize request: %d", rc);
|
|
1292
|
|
1293 if (rc >= NGX_HTTP_SPECIAL_RESPONSE) {
|
|
1294
|
|
1295 if (r->connection->read->timer_set) {
|
|
1296 ngx_del_timer(r->connection->read);
|
|
1297 }
|
|
1298
|
|
1299 if (r->connection->write->timer_set) {
|
|
1300 ngx_del_timer(r->connection->write);
|
|
1301 }
|
|
1302
|
|
1303 if (rc == NGX_HTTP_CLIENT_CLOSED_REQUEST || r->closed) {
|
|
1304 ngx_http_close_request(r, 0);
|
|
1305 ngx_http_close_connection(r->connection);
|
|
1306 return;
|
|
1307 }
|
|
1308
|
|
1309 ngx_http_finalize_request(r, ngx_http_special_response_handler(r, rc));
|
|
1310
|
|
1311 return;
|
|
1312
|
|
1313 } else if (rc == NGX_ERROR) {
|
|
1314 ngx_http_close_request(r, 0);
|
|
1315 ngx_http_close_connection(r->connection);
|
|
1316 return;
|
|
1317
|
|
1318 } else if (rc == NGX_AGAIN) {
|
|
1319 ngx_http_set_write_handler(r);
|
|
1320 return;
|
|
1321 }
|
|
1322
|
|
1323 if (r->connection->read->timer_set) {
|
|
1324 ngx_del_timer(r->connection->read);
|
|
1325 }
|
|
1326
|
|
1327 if (r->connection->write->timer_set) {
|
|
1328 r->connection->write->delayed = 0;
|
|
1329 ngx_del_timer(r->connection->write);
|
|
1330 }
|
|
1331
|
|
1332 if (r->connection->read->pending_eof) {
|
22
|
1333 #if (NGX_HAVE_KQUEUE)
|
0
|
1334 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log,
|
|
1335 r->connection->read->kq_errno,
|
|
1336 "kevent() reported about an closed connection");
|
|
1337 #endif
|
|
1338 ngx_http_close_request(r, 0);
|
|
1339 ngx_http_close_connection(r->connection);
|
|
1340 return;
|
|
1341 }
|
|
1342
|
|
1343 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1344
|
|
1345 if (!ngx_terminate
|
|
1346 && !ngx_exiting
|
|
1347 && r->keepalive != 0
|
|
1348 && clcf->keepalive_timeout > 0)
|
|
1349 {
|
|
1350 ngx_http_set_keepalive(r);
|
|
1351 return;
|
|
1352
|
|
1353 } else if (r->lingering_close && clcf->lingering_timeout > 0) {
|
|
1354 ngx_http_set_lingering_close(r);
|
|
1355 return;
|
|
1356 }
|
|
1357
|
|
1358 ngx_http_close_request(r, 0);
|
|
1359 ngx_http_close_connection(r->connection);
|
|
1360 }
|
|
1361
|
|
1362
|
|
1363 static void ngx_http_set_write_handler(ngx_http_request_t *r)
|
|
1364 {
|
|
1365 ngx_event_t *wev;
|
|
1366 ngx_http_core_loc_conf_t *clcf;
|
|
1367
|
|
1368 wev = r->connection->write;
|
|
1369 wev->event_handler = ngx_http_writer;
|
|
1370
|
|
1371 r->http_state = NGX_HTTP_WRITING_REQUEST_STATE;
|
|
1372
|
|
1373 if (wev->ready && wev->delayed) {
|
|
1374 return;
|
|
1375 }
|
|
1376
|
|
1377 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
1378 ngx_http_core_module);
|
|
1379 if (!wev->delayed) {
|
|
1380 ngx_add_timer(wev, clcf->send_timeout);
|
|
1381 }
|
|
1382
|
2
|
1383 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
0
|
1384 ngx_http_close_request(r, 0);
|
|
1385 ngx_http_close_connection(r->connection);
|
|
1386 }
|
|
1387
|
|
1388 return;
|
|
1389 }
|
|
1390
|
|
1391
|
|
1392 void ngx_http_writer(ngx_event_t *wev)
|
|
1393 {
|
|
1394 int rc;
|
|
1395 ngx_connection_t *c;
|
|
1396 ngx_http_request_t *r;
|
|
1397 ngx_http_core_loc_conf_t *clcf;
|
|
1398
|
|
1399 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http writer handler");
|
|
1400
|
|
1401 c = wev->data;
|
|
1402 r = c->data;
|
|
1403
|
|
1404 if (wev->timedout) {
|
|
1405 if (!wev->delayed) {
|
|
1406 ngx_http_client_error(r, 0, NGX_HTTP_REQUEST_TIME_OUT);
|
|
1407 return;
|
|
1408 }
|
|
1409
|
|
1410 wev->timedout = 0;
|
|
1411 wev->delayed = 0;
|
|
1412
|
|
1413 if (!wev->ready) {
|
|
1414 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
1415 ngx_http_core_module);
|
|
1416 ngx_add_timer(wev, clcf->send_timeout);
|
|
1417
|
2
|
1418 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
0
|
1419 ngx_http_close_request(r, 0);
|
|
1420 ngx_http_close_connection(r->connection);
|
|
1421 }
|
|
1422
|
|
1423 return;
|
|
1424 }
|
|
1425
|
|
1426 } else {
|
|
1427 if (wev->delayed) {
|
|
1428 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
1429 "http writer delayed");
|
|
1430
|
|
1431 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
1432 ngx_http_core_module);
|
2
|
1433
|
|
1434 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
0
|
1435 ngx_http_close_request(r, 0);
|
|
1436 ngx_http_close_connection(r->connection);
|
|
1437 }
|
|
1438
|
|
1439 return;
|
|
1440 }
|
|
1441 }
|
|
1442
|
|
1443 rc = ngx_http_output_filter(r, NULL);
|
|
1444
|
|
1445 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1446 "http writer output filter: %d", rc);
|
|
1447
|
|
1448 if (rc == NGX_AGAIN) {
|
|
1449 clcf = ngx_http_get_module_loc_conf(r->main ? r->main : r,
|
|
1450 ngx_http_core_module);
|
|
1451 if (!wev->ready && !wev->delayed) {
|
|
1452 ngx_add_timer(wev, clcf->send_timeout);
|
|
1453 }
|
|
1454
|
2
|
1455 if (ngx_handle_write_event(wev, clcf->send_lowat) == NGX_ERROR) {
|
0
|
1456 ngx_http_close_request(r, 0);
|
|
1457 ngx_http_close_connection(r->connection);
|
|
1458 }
|
|
1459
|
|
1460 return;
|
|
1461 }
|
|
1462
|
|
1463 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http writer done");
|
|
1464
|
|
1465 ngx_http_finalize_request(r, rc);
|
|
1466 }
|
|
1467
|
|
1468
|
|
1469 static void ngx_http_block_read(ngx_event_t *rev)
|
|
1470 {
|
|
1471 ngx_connection_t *c;
|
|
1472 ngx_http_request_t *r;
|
|
1473
|
|
1474 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http read blocked");
|
|
1475
|
|
1476 /* aio does not call this handler */
|
|
1477
|
|
1478 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && rev->active) {
|
|
1479 if (ngx_del_event(rev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
1480 c = rev->data;
|
|
1481 r = c->data;
|
|
1482 ngx_http_close_request(r, 0);
|
|
1483 ngx_http_close_connection(c);
|
|
1484 }
|
|
1485 }
|
|
1486 }
|
|
1487
|
|
1488
|
|
1489 ngx_int_t ngx_http_discard_body(ngx_http_request_t *r)
|
|
1490 {
|
|
1491 ssize_t size;
|
|
1492 ngx_event_t *rev;
|
|
1493
|
|
1494 rev = r->connection->read;
|
|
1495
|
|
1496 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0, "http set discard body");
|
|
1497
|
|
1498 if (rev->timer_set) {
|
|
1499 ngx_del_timer(rev);
|
|
1500 }
|
|
1501
|
|
1502 if (r->headers_in.content_length_n <= 0) {
|
|
1503 return NGX_OK;
|
|
1504 }
|
|
1505
|
|
1506 size = r->header_in->last - r->header_in->pos;
|
|
1507
|
|
1508 if (size) {
|
|
1509 if (r->headers_in.content_length_n > size) {
|
|
1510 r->headers_in.content_length_n -= size;
|
|
1511
|
|
1512 } else {
|
|
1513 r->header_in->pos += r->headers_in.content_length_n;
|
|
1514 r->headers_in.content_length_n = 0;
|
|
1515 return NGX_OK;
|
|
1516 }
|
|
1517 }
|
|
1518
|
|
1519 rev->event_handler = ngx_http_read_discarded_body_event;
|
|
1520
|
|
1521 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
1522 return NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
1523 }
|
|
1524
|
|
1525 return ngx_http_read_discarded_body(r);
|
|
1526 }
|
|
1527
|
|
1528
|
|
1529 static void ngx_http_read_discarded_body_event(ngx_event_t *rev)
|
|
1530 {
|
|
1531 ngx_int_t rc;
|
|
1532 ngx_connection_t *c;
|
|
1533 ngx_http_request_t *r;
|
|
1534
|
|
1535 c = rev->data;
|
|
1536 r = c->data;
|
|
1537
|
|
1538 rc = ngx_http_read_discarded_body(r);
|
|
1539
|
|
1540 if (rc == NGX_AGAIN) {
|
|
1541 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
1542 ngx_http_close_request(r, rc);
|
|
1543 ngx_http_close_connection(c);
|
|
1544 return;
|
|
1545 }
|
|
1546 }
|
|
1547
|
|
1548 if (rc != NGX_OK) {
|
|
1549 ngx_http_close_request(r, rc);
|
|
1550 ngx_http_close_connection(c);
|
|
1551 }
|
|
1552 }
|
|
1553
|
|
1554
|
|
1555 static ngx_int_t ngx_http_read_discarded_body(ngx_http_request_t *r)
|
|
1556 {
|
|
1557 ssize_t size, n;
|
|
1558 u_char buffer[NGX_HTTP_DISCARD_BUFFER_SIZE];
|
|
1559
|
|
1560 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1561 "http read discarded body");
|
|
1562
|
|
1563 if (r->headers_in.content_length_n == 0) {
|
|
1564 return NGX_OK;
|
|
1565 }
|
|
1566
|
|
1567
|
|
1568 size = r->headers_in.content_length_n;
|
|
1569
|
|
1570 if (size > NGX_HTTP_DISCARD_BUFFER_SIZE) {
|
|
1571 size = NGX_HTTP_DISCARD_BUFFER_SIZE;
|
|
1572 }
|
|
1573
|
|
1574 n = r->connection->recv(r->connection, buffer, size);
|
|
1575
|
|
1576 if (n == NGX_ERROR) {
|
|
1577
|
|
1578 r->closed = 1;
|
|
1579
|
|
1580 /*
|
|
1581 * if a client request body is discarded then we already set
|
|
1582 * some HTTP response code for client and we can ignore the error
|
|
1583 */
|
|
1584
|
|
1585 return NGX_OK;
|
|
1586 }
|
|
1587
|
|
1588 if (n == NGX_AGAIN) {
|
|
1589 return NGX_AGAIN;
|
|
1590 }
|
|
1591
|
|
1592 r->headers_in.content_length_n -= n;
|
|
1593
|
|
1594 return NGX_OK;
|
|
1595 }
|
|
1596
|
|
1597
|
|
1598 static void ngx_http_set_keepalive(ngx_http_request_t *r)
|
|
1599 {
|
2
|
1600 int tcp_nodelay;
|
0
|
1601 ngx_int_t i;
|
|
1602 ngx_buf_t *b, *f;
|
|
1603 ngx_event_t *rev, *wev;
|
|
1604 ngx_connection_t *c;
|
|
1605 ngx_http_connection_t *hc;
|
|
1606 ngx_http_log_ctx_t *ctx;
|
|
1607 ngx_http_core_srv_conf_t *cscf;
|
|
1608 ngx_http_core_loc_conf_t *clcf;
|
|
1609
|
|
1610 c = r->connection;
|
|
1611 rev = c->read;
|
|
1612
|
|
1613 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "set http keepalive handler");
|
|
1614
|
10
|
1615 ctx = c->log->data;
|
0
|
1616 ctx->action = "closing request";
|
|
1617
|
|
1618 hc = r->http_connection;
|
|
1619 b = r->header_in;
|
|
1620
|
|
1621 if (b->pos < b->last) {
|
|
1622
|
|
1623 /* the pipelined request */
|
|
1624
|
|
1625 if (b != c->buffer) {
|
|
1626
|
4
|
1627 /*
|
|
1628 * If the large header buffers were allocated while the previous
|
|
1629 * request processing then we do not use c->buffer for
|
|
1630 * the pipelined request (see ngx_http_init_request()).
|
|
1631 *
|
|
1632 * Now we would move the large header buffers to the free list.
|
|
1633 */
|
0
|
1634
|
|
1635 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
1636
|
|
1637 if (hc->free == NULL) {
|
|
1638 hc->free = ngx_palloc(c->pool,
|
|
1639 cscf->large_client_header_buffers.num * sizeof(ngx_buf_t *));
|
|
1640
|
|
1641 if (hc->free == NULL) {
|
26
|
1642 ngx_http_close_request(r, 0);
|
0
|
1643 ngx_http_close_connection(c);
|
|
1644 return;
|
|
1645 }
|
|
1646 }
|
|
1647
|
|
1648 for (i = 0; i < hc->nbusy - 1; i++) {
|
|
1649 f = hc->busy[i];
|
|
1650 hc->free[hc->nfree++] = f;
|
|
1651 f->pos = f->start;
|
|
1652 f->last = f->start;
|
|
1653 }
|
|
1654
|
|
1655 hc->busy[0] = b;
|
|
1656 hc->nbusy = 1;
|
|
1657 }
|
|
1658 }
|
|
1659
|
26
|
1660 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1661
|
0
|
1662 ngx_http_close_request(r, 0);
|
|
1663 c->data = hc;
|
|
1664
|
|
1665 ngx_add_timer(rev, clcf->keepalive_timeout);
|
|
1666
|
|
1667 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
1668 ngx_http_close_connection(c);
|
|
1669 return;
|
|
1670 }
|
|
1671
|
|
1672 wev = c->write;
|
|
1673 wev->event_handler = ngx_http_empty_handler;
|
|
1674
|
|
1675 if (b->pos < b->last) {
|
|
1676
|
|
1677 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "pipelined request");
|
|
1678
|
|
1679 hc->pipeline = 1;
|
|
1680 ctx->action = "reading client pipelined request line";
|
|
1681 ngx_http_init_request(rev);
|
|
1682 return;
|
|
1683 }
|
|
1684
|
|
1685 hc->pipeline = 0;
|
|
1686
|
4
|
1687 /*
|
|
1688 * To keep a memory footprint as small as possible for an idle
|
|
1689 * keepalive connection we try to free the ngx_http_request_t and
|
|
1690 * c->buffer's memory if they were allocated outside the c->pool.
|
|
1691 * The large header buffers are always allocated outside the c->pool and
|
|
1692 * are freed too.
|
|
1693 */
|
|
1694
|
0
|
1695 if (ngx_pfree(c->pool, r) == NGX_OK) {
|
|
1696 hc->request = NULL;
|
|
1697 }
|
|
1698
|
|
1699 b = c->buffer;
|
|
1700
|
|
1701 if (ngx_pfree(c->pool, b->start) == NGX_OK) {
|
4
|
1702
|
|
1703 /*
|
|
1704 * the special note for ngx_http_keepalive_handler() that
|
|
1705 * c->buffer's memory was freed
|
|
1706 */
|
|
1707
|
0
|
1708 b->pos = NULL;
|
|
1709
|
|
1710 } else {
|
|
1711 b->pos = b->start;
|
|
1712 b->last = b->start;
|
|
1713 }
|
|
1714
|
10
|
1715 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc free: %p %d",
|
0
|
1716 hc->free, hc->nfree);
|
|
1717
|
|
1718 if (hc->free) {
|
|
1719 for (i = 0; i < hc->nfree; i++) {
|
|
1720 ngx_pfree(c->pool, hc->free[i]);
|
|
1721 hc->free[i] = NULL;
|
|
1722 }
|
|
1723
|
|
1724 hc->nfree = 0;
|
|
1725 }
|
|
1726
|
10
|
1727 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0, "hc busy: %p %d",
|
0
|
1728 hc->busy, hc->nbusy);
|
|
1729
|
|
1730 if (hc->busy) {
|
|
1731 for (i = 0; i < hc->nbusy; i++) {
|
|
1732 ngx_pfree(c->pool, hc->busy[i]);
|
|
1733 hc->busy[i] = NULL;
|
|
1734 }
|
|
1735
|
|
1736 hc->nbusy = 0;
|
|
1737 }
|
|
1738
|
|
1739 rev->event_handler = ngx_http_keepalive_handler;
|
|
1740
|
|
1741 if (wev->active) {
|
4
|
1742 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
0
|
1743 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
1744 == NGX_ERROR)
|
|
1745 {
|
|
1746 ngx_http_close_connection(c);
|
|
1747 return;
|
|
1748 }
|
|
1749
|
|
1750 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
1751 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
|
1752 ngx_http_close_connection(c);
|
|
1753 return;
|
|
1754 }
|
|
1755 }
|
|
1756 }
|
|
1757
|
|
1758 ctx->action = "keepalive";
|
|
1759
|
|
1760 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
1761 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
1762 ngx_connection_error(c, ngx_socket_errno, ngx_tcp_push_n " failed");
|
|
1763 ngx_http_close_connection(c);
|
|
1764 return;
|
|
1765 }
|
2
|
1766
|
0
|
1767 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
22
|
1768 tcp_nodelay = ngx_tcp_nodelay_and_tcp_nopush ? 1 : 0;
|
2
|
1769
|
|
1770 } else {
|
22
|
1771 tcp_nodelay = 1;
|
|
1772 }
|
|
1773
|
|
1774 if (tcp_nodelay && clcf->tcp_nodelay && !c->tcp_nodelay) {
|
|
1775
|
|
1776 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
1777
|
|
1778 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
1779 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
1780 {
|
|
1781 ngx_connection_error(c, ngx_socket_errno,
|
|
1782 "setsockopt(TCP_NODELAY) failed");
|
|
1783 ngx_http_close_connection(c);
|
|
1784 return;
|
2
|
1785 }
|
22
|
1786
|
|
1787 c->tcp_nodelay = 1;
|
0
|
1788 }
|
|
1789
|
|
1790 #if 0
|
4
|
1791 /* if ngx_http_request_t was freed then we need some other place */
|
0
|
1792 r->http_state = NGX_HTTP_KEEPALIVE_STATE;
|
|
1793 #endif
|
|
1794
|
|
1795 if (rev->ready) {
|
|
1796 ngx_http_keepalive_handler(rev);
|
|
1797 }
|
|
1798 }
|
|
1799
|
|
1800
|
|
1801 static void ngx_http_keepalive_handler(ngx_event_t *rev)
|
|
1802 {
|
|
1803 size_t size;
|
|
1804 ssize_t n;
|
|
1805 ngx_buf_t *b;
|
|
1806 ngx_connection_t *c;
|
|
1807 ngx_http_log_ctx_t *ctx;
|
|
1808 ngx_http_connection_t *hc;
|
|
1809
|
|
1810 c = rev->data;
|
|
1811
|
|
1812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "http keepalive handler");
|
|
1813
|
|
1814 if (rev->timedout) {
|
|
1815 ngx_http_close_connection(c);
|
|
1816 return;
|
|
1817 }
|
|
1818
|
|
1819 ctx = (ngx_http_log_ctx_t *) rev->log->data;
|
|
1820
|
18
|
1821 #if (NGX_HAVE_KQUEUE)
|
0
|
1822
|
4
|
1823 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
0
|
1824 if (rev->pending_eof) {
|
10
|
1825 rev->log->handler = NULL;
|
0
|
1826 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
|
10
|
1827 "kevent() reported that client %V closed "
|
0
|
1828 "keepalive connection", ctx->client);
|
22
|
1829 #if (NGX_HTTP_SSL)
|
|
1830 if (c->ssl) {
|
|
1831 c->ssl->no_send_shut = 1;
|
|
1832 }
|
|
1833 #endif
|
0
|
1834 ngx_http_close_connection(c);
|
|
1835 return;
|
|
1836 }
|
|
1837 }
|
|
1838
|
|
1839 #endif
|
|
1840
|
|
1841 hc = c->data;
|
|
1842 b = c->buffer;
|
|
1843 size = b->end - b->start;
|
|
1844
|
|
1845 if (b->pos == NULL) {
|
4
|
1846
|
|
1847 /*
|
|
1848 * The c->buffer's memory was freed by ngx_http_set_keepalive().
|
|
1849 * However, the c->buffer->start and c->buffer->end were not changed
|
|
1850 * to keep the buffer size.
|
|
1851 */
|
|
1852
|
0
|
1853 if (!(b->pos = ngx_palloc(c->pool, size))) {
|
|
1854 ngx_http_close_connection(c);
|
|
1855 return;
|
|
1856 }
|
|
1857
|
|
1858 b->start = b->pos;
|
|
1859 b->last = b->pos;
|
|
1860 b->end = b->pos + size;
|
|
1861 }
|
|
1862
|
|
1863 /*
|
|
1864 * MSIE closes a keepalive connection with RST flag
|
|
1865 * so we ignore ECONNRESET here.
|
|
1866 */
|
|
1867
|
|
1868 c->log_error = NGX_ERROR_IGNORE_ECONNRESET;
|
|
1869 ngx_set_socket_errno(0);
|
|
1870
|
|
1871 n = c->recv(c, b->last, size);
|
|
1872 c->log_error = NGX_ERROR_INFO;
|
|
1873
|
|
1874 if (n == NGX_AGAIN) {
|
24
|
1875 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
1876 ngx_http_close_connection(c);
|
|
1877 }
|
|
1878
|
0
|
1879 return;
|
|
1880 }
|
|
1881
|
|
1882 if (n == NGX_ERROR) {
|
|
1883 ngx_http_close_connection(c);
|
|
1884 return;
|
|
1885 }
|
|
1886
|
|
1887 rev->log->handler = NULL;
|
|
1888
|
|
1889 if (n == 0) {
|
|
1890 ngx_log_error(NGX_LOG_INFO, c->log, ngx_socket_errno,
|
10
|
1891 "client %V closed keepalive connection", ctx->client);
|
0
|
1892 ngx_http_close_connection(c);
|
|
1893 return;
|
|
1894 }
|
|
1895
|
|
1896 b->last += n;
|
|
1897 rev->log->handler = ngx_http_log_error;
|
|
1898 ctx->action = "reading client request line";
|
|
1899
|
|
1900 ngx_http_init_request(rev);
|
|
1901 }
|
|
1902
|
|
1903
|
|
1904 static void ngx_http_set_lingering_close(ngx_http_request_t *r)
|
|
1905 {
|
|
1906 ngx_event_t *rev, *wev;
|
|
1907 ngx_connection_t *c;
|
|
1908 ngx_http_core_loc_conf_t *clcf;
|
|
1909
|
|
1910 c = r->connection;
|
|
1911
|
|
1912 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1913
|
|
1914 rev = c->read;
|
|
1915 rev->event_handler = ngx_http_lingering_close_handler;
|
|
1916
|
|
1917 r->lingering_time = ngx_time() + clcf->lingering_time / 1000;
|
|
1918 ngx_add_timer(rev, clcf->lingering_timeout);
|
|
1919
|
|
1920 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
|
1921 ngx_http_close_request(r, 0);
|
|
1922 ngx_http_close_connection(c);
|
|
1923 return;
|
|
1924 }
|
|
1925
|
|
1926 wev = c->write;
|
|
1927 wev->event_handler = ngx_http_empty_handler;
|
|
1928
|
|
1929 if (wev->active) {
|
4
|
1930 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
0
|
1931 if (ngx_del_event(wev, NGX_WRITE_EVENT, NGX_DISABLE_EVENT)
|
|
1932 == NGX_ERROR)
|
|
1933 {
|
26
|
1934 ngx_http_close_request(r, 0);
|
0
|
1935 ngx_http_close_connection(c);
|
|
1936 return;
|
|
1937 }
|
|
1938
|
|
1939 } else if (ngx_event_flags & NGX_USE_LEVEL_EVENT) {
|
|
1940 if (ngx_del_event(wev, NGX_WRITE_EVENT, 0) == NGX_ERROR) {
|
26
|
1941 ngx_http_close_request(r, 0);
|
0
|
1942 ngx_http_close_connection(c);
|
|
1943 return;
|
|
1944 }
|
|
1945 }
|
|
1946 }
|
|
1947
|
|
1948 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
1949 ngx_connection_error(c, ngx_socket_errno,
|
|
1950 ngx_shutdown_socket_n " failed");
|
|
1951 ngx_http_close_request(r, 0);
|
|
1952 ngx_http_close_connection(c);
|
|
1953 return;
|
|
1954 }
|
|
1955
|
|
1956 if (rev->ready) {
|
|
1957 ngx_http_lingering_close_handler(rev);
|
|
1958 }
|
|
1959 }
|
|
1960
|
|
1961
|
|
1962 static void ngx_http_lingering_close_handler(ngx_event_t *rev)
|
|
1963 {
|
|
1964 ssize_t n;
|
|
1965 ngx_msec_t timer;
|
|
1966 ngx_connection_t *c;
|
|
1967 ngx_http_request_t *r;
|
|
1968 ngx_http_core_loc_conf_t *clcf;
|
|
1969 u_char buffer[NGX_HTTP_LINGERING_BUFFER_SIZE];
|
|
1970
|
|
1971 c = rev->data;
|
|
1972 r = c->data;
|
|
1973
|
|
1974 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1975 "http lingering close handler");
|
|
1976
|
|
1977 if (rev->timedout) {
|
|
1978 ngx_http_close_request(r, 0);
|
|
1979 ngx_http_close_connection(c);
|
|
1980 return;
|
|
1981 }
|
|
1982
|
|
1983 timer = r->lingering_time - ngx_time();
|
|
1984 if (timer <= 0) {
|
|
1985 ngx_http_close_request(r, 0);
|
|
1986 ngx_http_close_connection(c);
|
|
1987 return;
|
|
1988 }
|
|
1989
|
|
1990 do {
|
|
1991 n = c->recv(c, buffer, NGX_HTTP_LINGERING_BUFFER_SIZE);
|
|
1992
|
|
1993 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0, "lingering read: %d", n);
|
|
1994
|
|
1995 if (n == NGX_ERROR || n == 0) {
|
|
1996 ngx_http_close_request(r, 0);
|
|
1997 ngx_http_close_connection(c);
|
|
1998 return;
|
|
1999 }
|
|
2000
|
|
2001 } while (rev->ready);
|
|
2002
|
24
|
2003 if (ngx_handle_level_read_event(rev) == NGX_ERROR) {
|
26
|
2004 ngx_http_close_request(r, 0);
|
24
|
2005 ngx_http_close_connection(c);
|
|
2006 return;
|
|
2007 }
|
|
2008
|
0
|
2009 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2010
|
|
2011 timer *= 1000;
|
|
2012
|
|
2013 if (timer > clcf->lingering_timeout) {
|
|
2014 timer = clcf->lingering_timeout;
|
|
2015 }
|
|
2016
|
|
2017 ngx_add_timer(rev, timer);
|
|
2018 }
|
|
2019
|
|
2020
|
|
2021 void ngx_http_empty_handler(ngx_event_t *wev)
|
|
2022 {
|
|
2023 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0, "http empty handler");
|
|
2024
|
|
2025 return;
|
|
2026 }
|
|
2027
|
|
2028
|
|
2029 ngx_int_t ngx_http_send_last(ngx_http_request_t *r)
|
|
2030 {
|
|
2031 ngx_buf_t *b;
|
|
2032 ngx_chain_t out;
|
|
2033
|
|
2034 if (!(b = ngx_calloc_buf(r->pool))) {
|
|
2035 return NGX_ERROR;
|
|
2036 }
|
|
2037
|
|
2038 b->last_buf = 1;
|
|
2039 out.buf = b;
|
|
2040 out.next = NULL;
|
|
2041
|
|
2042 return ngx_http_output_filter(r, &out);
|
|
2043 }
|
|
2044
|
|
2045
|
|
2046 void ngx_http_close_request(ngx_http_request_t *r, int error)
|
|
2047 {
|
|
2048 ngx_uint_t i;
|
|
2049 ngx_log_t *log;
|
|
2050 ngx_http_log_ctx_t *ctx;
|
|
2051 ngx_http_cleanup_t *cleanup;
|
|
2052 ngx_http_core_loc_conf_t *clcf;
|
|
2053 struct linger l;
|
|
2054
|
|
2055 log = r->connection->log;
|
|
2056
|
|
2057 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, log, 0, "http close request");
|
|
2058
|
|
2059 if (r->pool == NULL) {
|
|
2060 ngx_log_error(NGX_LOG_ALERT, log, 0,
|
|
2061 "http request already closed");
|
|
2062 return;
|
|
2063 }
|
|
2064
|
|
2065 #if (NGX_STAT_STUB)
|
|
2066 if (r->stat_reading) {
|
|
2067 (*ngx_stat_reading)--;
|
|
2068 }
|
|
2069
|
|
2070 if (r->stat_writing) {
|
|
2071 (*ngx_stat_writing)--;
|
|
2072 }
|
|
2073 #endif
|
|
2074
|
|
2075 if (error && r->headers_out.status == 0) {
|
|
2076 r->headers_out.status = error;
|
|
2077 }
|
|
2078
|
|
2079 ngx_http_log_handler(r);
|
|
2080
|
|
2081 cleanup = r->cleanup.elts;
|
|
2082 for (i = 0; i < r->cleanup.nelts; i++) {
|
|
2083 if (!cleanup[i].valid) {
|
|
2084 continue;
|
|
2085 }
|
|
2086
|
|
2087 #if (NGX_HTTP_CACHE)
|
|
2088
|
|
2089 if (cleanup[i].cache) {
|
|
2090 ngx_http_cache_unlock(cleanup[i].data.cache.hash,
|
|
2091 cleanup[i].data.cache.cache, log);
|
|
2092 continue;
|
|
2093 }
|
|
2094
|
|
2095 #endif
|
|
2096
|
|
2097 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, log, 0, "http cleanup fd: %d",
|
|
2098 cleanup[i].data.file.fd);
|
|
2099
|
|
2100 if (ngx_close_file(cleanup[i].data.file.fd) == NGX_FILE_ERROR) {
|
|
2101 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
|
2102 ngx_close_file_n " \"%s\" failed",
|
|
2103 cleanup[i].data.file.name);
|
|
2104 }
|
|
2105 }
|
|
2106
|
|
2107 /* STUB */
|
|
2108 if (r->file.fd != NGX_INVALID_FILE) {
|
|
2109 if (ngx_close_file(r->file.fd) == NGX_FILE_ERROR) {
|
|
2110 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
10
|
2111 ngx_close_file_n " \"%V\" failed", &r->file.name);
|
0
|
2112 }
|
|
2113 }
|
|
2114
|
|
2115 if (r->request_body
|
|
2116 && r->request_body->temp_file
|
|
2117 && r->request_body->temp_file->file.fd != NGX_INVALID_FILE)
|
|
2118 {
|
|
2119 if (ngx_close_file(r->request_body->temp_file->file.fd)
|
|
2120 == NGX_FILE_ERROR)
|
|
2121 {
|
|
2122 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
|
10
|
2123 ngx_close_file_n " deleted file \"%V\" failed",
|
|
2124 &r->request_body->temp_file->file.name);
|
0
|
2125 }
|
|
2126 }
|
|
2127
|
|
2128 if (r->connection->timedout) {
|
|
2129 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2130
|
|
2131 if (clcf->reset_timedout_connection) {
|
|
2132 l.l_onoff = 1;
|
|
2133 l.l_linger = 0;
|
|
2134
|
|
2135 if (setsockopt(r->connection->fd, SOL_SOCKET, SO_LINGER,
|
|
2136 (const void *) &l, sizeof(struct linger)) == -1)
|
|
2137 {
|
|
2138 ngx_log_error(NGX_LOG_ALERT, log, ngx_socket_errno,
|
|
2139 "setsockopt(SO_LINGER) failed");
|
|
2140 }
|
|
2141 }
|
|
2142 }
|
|
2143
|
10
|
2144 /* the variuos request strings were allocated from r->pool */
|
0
|
2145 ctx = log->data;
|
10
|
2146 ctx->request = NULL;
|
0
|
2147
|
|
2148 r->request_line.len = 0;
|
|
2149
|
|
2150 ngx_destroy_pool(r->pool);
|
|
2151 }
|
|
2152
|
|
2153
|
|
2154 #if (NGX_HTTP_SSL)
|
|
2155
|
|
2156 void ngx_ssl_close_handler(ngx_event_t *ev)
|
|
2157 {
|
|
2158 ngx_connection_t *c;
|
|
2159
|
|
2160 c = ev->data;
|
|
2161
|
|
2162 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, ev->log, 0, "http ssl close handler");
|
|
2163
|
|
2164 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
2165 return;
|
|
2166 }
|
|
2167
|
|
2168 ngx_http_close_connection(c);
|
|
2169 }
|
|
2170
|
|
2171 #endif
|
|
2172
|
|
2173
|
|
2174 void ngx_http_close_connection(ngx_connection_t *c)
|
|
2175 {
|
|
2176 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2177 "close http connection: %d", c->fd);
|
|
2178
|
2
|
2179 #if (NGX_OPENSSL)
|
|
2180
|
|
2181 if (c->ssl) {
|
|
2182 if (ngx_ssl_shutdown(c) == NGX_AGAIN) {
|
|
2183 c->read->event_handler = ngx_ssl_close_handler;
|
|
2184 c->write->event_handler = ngx_ssl_close_handler;
|
|
2185 return;
|
|
2186 }
|
|
2187 }
|
|
2188
|
|
2189 #endif
|
|
2190
|
0
|
2191 #if (NGX_STAT_STUB)
|
|
2192 (*ngx_stat_active)--;
|
|
2193 #endif
|
|
2194
|
|
2195 ngx_close_connection(c);
|
|
2196 }
|
|
2197
|
|
2198
|
|
2199 static void ngx_http_client_error(ngx_http_request_t *r,
|
|
2200 int client_error, int error)
|
|
2201 {
|
10
|
2202 u_char *p;
|
0
|
2203 ngx_http_log_ctx_t *ctx;
|
|
2204 ngx_http_core_srv_conf_t *cscf;
|
|
2205
|
|
2206 ctx = r->connection->log->data;
|
|
2207
|
|
2208 if (error == NGX_HTTP_REQUEST_TIME_OUT) {
|
|
2209 ngx_log_error(NGX_LOG_INFO, r->connection->log, NGX_ETIMEDOUT,
|
|
2210 "client timed out");
|
|
2211 r->connection->timedout = 1;
|
|
2212 ngx_http_close_request(r, error);
|
|
2213 ngx_http_close_connection(r->connection);
|
|
2214 return;
|
|
2215 }
|
|
2216
|
|
2217 r->connection->log->handler = NULL;
|
|
2218
|
10
|
2219 if (ctx->request) {
|
|
2220
|
0
|
2221 switch (client_error) {
|
|
2222
|
|
2223 case NGX_HTTP_PARSE_INVALID_HOST:
|
|
2224 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
10
|
2225 "client %V sent invalid \"Host\" header \"%V\", URL: \"%V\"",
|
|
2226 ctx->client, &r->headers_in.host->value,
|
|
2227 &ctx->request->unparsed_uri);
|
0
|
2228
|
|
2229 error = NGX_HTTP_INVALID_HOST;
|
|
2230
|
|
2231 cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module);
|
|
2232
|
|
2233 if (cscf->restrict_host_names == NGX_HTTP_RESTRICT_HOST_CLOSE) {
|
|
2234 ngx_http_close_request(r, error);
|
|
2235 ngx_http_close_connection(r->connection);
|
|
2236 return;
|
|
2237 }
|
|
2238
|
|
2239 break;
|
|
2240
|
|
2241 case NGX_HTTP_PARSE_HTTP_TO_HTTPS:
|
|
2242 error = NGX_HTTP_TO_HTTPS;
|
10
|
2243 if (ctx->request->headers_in.referer) {
|
|
2244 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
2245 "client %V sent plain HTTP request to HTTPS port, "
|
|
2246 "URL: \"%V\", referrer \"%V\"",
|
|
2247 ctx->client, &ctx->request->unparsed_uri,
|
|
2248 &ctx->request->headers_in.referer->value);
|
|
2249
|
|
2250 } else {
|
|
2251 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
2252 "client %V sent plain HTTP request to HTTPS port, "
|
|
2253 "URL: \"%V\"", ctx->client, &ctx->request->unparsed_uri);
|
|
2254 }
|
|
2255
|
|
2256 break;
|
0
|
2257
|
|
2258 default:
|
|
2259 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
2260 client_header_errors[client_error - NGX_HTTP_CLIENT_ERROR],
|
10
|
2261 ctx->client, &ctx->request->unparsed_uri);
|
0
|
2262 }
|
|
2263
|
|
2264 } else {
|
10
|
2265
|
0
|
2266 if (error == NGX_HTTP_REQUEST_URI_TOO_LARGE) {
|
|
2267 r->request_line.len = r->header_in->end - r->request_start;
|
|
2268 r->request_line.data = r->request_start;
|
10
|
2269
|
|
2270 } else {
|
|
2271 if (r->request_line.data == NULL) {
|
|
2272 for (p = r->request_start; p < r->header_in->last; p++) {
|
|
2273 if (*p == CR || *p == LF) {
|
|
2274 break;
|
|
2275 }
|
|
2276 }
|
|
2277
|
|
2278 r->request_line.len = p - r->request_start;
|
|
2279 r->request_line.data = r->request_start;
|
|
2280 }
|
0
|
2281 }
|
|
2282
|
|
2283 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
2284 client_header_errors[client_error - NGX_HTTP_CLIENT_ERROR],
|
10
|
2285 ctx->client, &r->request_line);
|
0
|
2286 }
|
|
2287
|
|
2288 r->connection->log->handler = ngx_http_log_error;
|
|
2289
|
|
2290 ngx_http_finalize_request(r, error);
|
|
2291 }
|
|
2292
|
|
2293
|
10
|
2294 static u_char *ngx_http_log_error(void *data, u_char *buf, size_t len)
|
0
|
2295 {
|
|
2296 ngx_http_log_ctx_t *ctx = data;
|
|
2297
|
10
|
2298 u_char *p;
|
|
2299
|
|
2300 p = buf;
|
|
2301
|
|
2302 if (ctx->action) {
|
|
2303 p = ngx_snprintf(p, len, " while %s", ctx->action);
|
|
2304 len -= p - buf;
|
|
2305 }
|
|
2306
|
|
2307 p = ngx_snprintf(p, len, ", client: %V", ctx->client);
|
|
2308
|
|
2309 if (ctx->request == NULL) {
|
|
2310 return p;
|
0
|
2311 }
|
10
|
2312
|
|
2313 len -= p - buf;
|
|
2314
|
|
2315 p = ngx_snprintf(p, len, ", URL: \"%V\"", &ctx->request->unparsed_uri);
|
|
2316
|
|
2317 if (ctx->request->headers_in.referer == NULL) {
|
|
2318 return p;
|
|
2319 }
|
|
2320
|
|
2321 len -= p - buf;
|
|
2322
|
|
2323 return ngx_snprintf(p, len, ", referrer: \"%V\"",
|
|
2324 &ctx->request->headers_in.referer->value);
|
0
|
2325 }
|