Mercurial > hg > nginx

annotate src/http/modules/ngx_http_event_proxy_handler.c @ 20:a649c0a0adb3

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nginx-0.0.1-2002-12-03-18:45:38 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 03 Dec 2002 15:45:38 +0000
parents d7908993fdeb
children df7fb216a149
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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19
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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1
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2 #include <ngx_config.h>
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3 #include <ngx_core.h>
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4 #include <ngx_string.h>
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5 #include <ngx_file.h>
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6 #include <ngx_hunk.h>
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7 #include <ngx_event_write.h>
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8 #include <ngx_http.h>
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9 #include <ngx_http_event_proxy_handler.h>
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11 ngx_http_module_t ngx_http_proxy_module;
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14 static ngx_chain_t *ngx_http_proxy_create_request(ngx_http_request_t *r);
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15 static int ngx_http_proxy_connect(ngx_http_request_t *r,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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16 struct sockaddr_in *addr,
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17 char *addr_text);
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18 static int ngx_http_proxy_send_request(ngx_event_t *ev);
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21 int ngx_http_proxy_handler(ngx_http_request_t *r)
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22 {
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23 struct sockaddr_in addr;
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24 ngx_chain_t *chain;
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25 ngx_http_proxy_ctx_t *p;
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27 p = (ngx_http_proxy_ctx_t *) ngx_get_module_ctx(r, ngx_http_proxy_module);
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29 if (p == NULL)
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30 ngx_http_create_ctx(r, p, ngx_http_proxy_module,
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31 sizeof(ngx_http_proxy_ctx_t));
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32
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33 chain = ngx_http_proxy_create_request(r);
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34 if (chain == NULL)
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35 return NGX_ERROR;
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36
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37 p->out = chain;
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38
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39 ngx_memzero(&addr, sizeof(struct sockaddr_in));
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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40 addr.sin_family = AF_INET;
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41 addr.sin_addr.s_addr = inet_addr("127.0.0.1");
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42 addr.sin_port = htons(9000);
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43
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44 ngx_http_proxy_connect(r, &addr, "connecting to 127.0.0.1:9000");
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45 }
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47
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48 static ngx_chain_t *ngx_http_proxy_create_request(ngx_http_request_t *r)
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49 {
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50 int i;
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51 size_t len;
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52 ngx_hunk_t *hunk;
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53 ngx_chain_t *chain;
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54 ngx_table_elt_t *header;
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55
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56 /* STUB */
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57 int size = 1024;
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58
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59 /* "+ 2" is for "\r\n" */
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60 len = r->request_line.len + 2;
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61
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62 header = (ngx_table_elt_t *) r->headers_in.headers->elts;
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63 for (i = 0; i < r->headers_in.headers->nelts; i++) {
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64 if (&header[i] == r->headers_in.host)
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65 continue;
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66
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67 /* "+ 4" is for ": " and "\r\n" */
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68 len += header[i].key.len + header[i].value.len + 4;
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69 }
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70
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71 /* add "\r\n" at the header end */
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72 len += 2;
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73
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74 /* STUB */ len++;
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75
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76 ngx_test_null(hunk, ngx_create_temp_hunk(r->pool, len, 0, 0), NULL);
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77 ngx_add_hunk_to_chain(chain, hunk, r->pool, NULL);
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78
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79 ngx_memcpy(hunk->last.mem, r->request_line.data, r->request_line.len);
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80 hunk->last.mem += r->request_line.len;
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81 *(hunk->last.mem++) = CR; *(hunk->last.mem++) = LF;
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82
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83 for (i = 0; i < r->headers_in.headers->nelts; i++) {
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84 if (&header[i] == r->headers_in.host)
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85 continue;
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86
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87 ngx_memcpy(hunk->last.mem, header[i].key.data, header[i].key.len);
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88 hunk->last.mem += header[i].key.len;
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89
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90 *(hunk->last.mem++) = ':'; *(hunk->last.mem++) = ' ';
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91
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92 ngx_memcpy(hunk->last.mem, header[i].value.data, header[i].value.len);
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93 hunk->last.mem += header[i].value.len;
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94
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95 *(hunk->last.mem++) = CR; *(hunk->last.mem++) = LF;
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96
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97 ngx_log_debug(r->connection->log, "proxy: '%s: %s'" _
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98 header[i].key.data _ header[i].value.data);
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99 }
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100
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101 /* add "\r\n" at the header end */
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102 *(hunk->last.mem++) = CR; *(hunk->last.mem++) = LF;
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103
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104 /* STUB */ *(hunk->last.mem++) = '\0';
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105 ngx_log_debug(r->connection->log, "PROXY:\n'%s'" _ hunk->pos.mem);
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106
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107 return chain;
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108 }
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109
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110 static int ngx_http_proxy_connect(ngx_http_request_t *r,
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diff changeset
111 struct sockaddr_in *addr,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
112 char *addr_text)
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
113 {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
114 int rc;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
115 ngx_err_t err;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
116 ngx_socket_t s;
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
117 ngx_connection_t *c, *pc;
19
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
118 ngx_http_log_ctx_t *ctx;
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diff changeset
119
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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120 c = r->connection;
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121 ctx = c->log->data;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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122 ctx->action = addr_text;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
123
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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124 s = ngx_socket(AF_INET, SOCK_STREAM, IPPROTO_IP, 0);
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
125 if (s == -1) {
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126 ngx_log_error(NGX_LOG_ERR, c->log, ngx_socket_errno,
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127 ngx_socket_n " failed");
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128 return NGX_ERROR;
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129 }
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diff changeset
130
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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131 #if 0
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132 if (rcvbuf) {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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133 if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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134 (const void *) &rcvbuf, sizeof(int)) == -1) {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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135 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
136 "setsockopt(SO_RCVBUF) failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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137
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
138 if (ngx_close_socket(s) == -1)
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
139 ngx_log_error(NGX_LOG_ERR, c->log, ngx_socket_errno,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
140 ngx_close_socket_n " failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
141
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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142 return NGX_ERROR;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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143 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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144 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
145 #endif
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
146
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
147 if (ngx_nonblocking(s) == -1) {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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148 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_socket_errno,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
149 ngx_nonblocking_n " failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
150
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
151 if (ngx_close_socket(s) == -1)
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
152 ngx_log_error(NGX_LOG_ERR, c->log, ngx_socket_errno,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
153 ngx_close_socket_n " failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
154
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
155 return NGX_ERROR;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
156 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
157
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
158 rc = connect(s, (struct sockaddr *) addr, sizeof(struct sockaddr_in));
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
159
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
160 if (rc == -1) {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
161 err = ngx_socket_errno;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
162 if (err != NGX_EINPROGRESS) {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
163 ngx_log_error(NGX_LOG_ERR, c->log, err, "connect() failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
164
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
165 if (ngx_close_socket(s) == -1)
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
166 ngx_log_error(NGX_LOG_ERR, c->log, ngx_socket_errno,
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
167 ngx_close_socket_n " failed");
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
168
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
169 return NGX_ERROR;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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170 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
171 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
172
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
173 pc = &ngx_connections[s];
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
174
19
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diff changeset
175 ngx_memzero(&ngx_read_events[s], sizeof(ngx_event_t));
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diff changeset
176 ngx_memzero(&ngx_write_events[s], sizeof(ngx_event_t));
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diff changeset
177 ngx_memzero(&ngx_connections[s], sizeof(ngx_connection_t));
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diff changeset
178
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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179 ngx_read_events[s].data = ngx_write_events[s].data = &ngx_connections[s];
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diff changeset
180 ngx_connections[s].read = &ngx_read_events[s];
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diff changeset
181 ngx_connections[s].write = &ngx_write_events[s];
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182
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
183 ngx_connections[s].data = r;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
184
19
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diff changeset
185 ngx_connections[s].fd = s;
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diff changeset
186 ngx_connections[s].server = c->server;
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diff changeset
187 ngx_connections[s].servers = c->servers;
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diff changeset
188
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
189 ngx_connections[s].log =
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
190 ngx_read_events[s].log = ngx_write_events[s].log = c->log;
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diff changeset
191
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
192 ngx_test_null(pc->pool,
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
193 ngx_create_pool(/* STUB */ 1024 /* */, pc->log),
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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parents: 19
diff changeset
194 NGX_ERROR);
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
195
19
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diff changeset
196 if (rc == -1) {
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diff changeset
197 ngx_write_events[s].event_handler = ngx_http_proxy_send_request;
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diff changeset
198
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
199 return ngx_add_event(&ngx_write_events[s],
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
200 NGX_WRITE_EVENT, NGX_ONESHOT_EVENT);
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
201 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
202
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
203 ngx_write_events[s].write = 1;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
204 ngx_write_events[s].ready = 1;
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
205
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
206 return ngx_http_proxy_send_request(&ngx_write_events[s]);
19
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
207 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
208
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
209 static int ngx_http_proxy_send_request(ngx_event_t *ev)
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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parents:
diff changeset
210 {
20
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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parents: 19
diff changeset
211 ngx_chain_t *chain;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
212 ngx_connection_t *c;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
213 ngx_http_request_t *r;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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parents: 19
diff changeset
214 ngx_http_proxy_ctx_t *p;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
215
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
216 c = (ngx_connection_t *) ev->data;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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parents: 19
diff changeset
217 r = (ngx_http_request_t *) c->data;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
218 p = (ngx_http_proxy_ctx_t *) ngx_get_module_ctx(r, ngx_http_proxy_module);
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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parents: 19
diff changeset
219
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
220 chain = ngx_event_write(c, p->out, 0);
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
Igor Sysoev <igor@sysoev.ru>
parents: 19
diff changeset
221 if (chain == (ngx_chain_t *) -1)
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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222 return NGX_ERROR;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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223
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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224 p->out = chain;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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225
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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diff changeset
226 /* STUB */ return NGX_ERROR;
a649c0a0adb3 nginx-0.0.1-2002-12-03-18:45:38 import
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227 return NGX_OK;
19
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228 }
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229
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230 #if 0
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231
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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232 static int ngx_http_proxy_send_request(ngx_event_t *ev)
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233 {
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234 ngx_connection_t *c;
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235 ngx_http_request_t *r;
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236 ngx_http_proxy_ctx_t *p;
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237
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238 c = (ngx_connection_t *) ev->data;
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239 r = (ngx_http_request_t *) c->data;
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240 p = (ngx_http_proxy_ctx_t *) ngx_get_module_ctx(r, ngx_http_proxy_module);
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241
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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242 n = ngx_send(p->fd, p->header_out->pos.mem,
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243 p->header_out->end.mem - p->header_out->pos.mem);
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244
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245 if (n == NGX_ERROR) {
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246 ngx_log_error(NGX_LOG_ERR, r->log, ngx_socket_errno,
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247 ngx_send_n " %s falied", p->addr_text);
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248 return NGX_ERROR;
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249 }
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250
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251 p->header_out->pos.mem += n;
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252
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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253 if (p->header_out->end.mem - p->header_out->pos.mem > 0)
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254 return NGX_AGAIN;
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255
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256 /* TODO: body */
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257
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258 return NGX_OK;
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259 }
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260
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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261 static int ngx_http_proxy_read_response_header(ngx_event_t *ev)
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262 {
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263 ngx_connection_t *c;
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264 ngx_http_request_t *r;
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265 ngx_http_proxy_ctx_t *p;
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266
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
267 if (ev->timedout)
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268 return NGX_ERROR;
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269
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270 c = (ngx_connection_t *) ev->data;
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271 r = (ngx_http_request_t *) c->data;
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272 p = (ngx_http_proxy_ctx_t *) ngx_get_module_ctx(r, ngx_http_proxy_module);
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273
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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274 n = ngx_event_recv(c, p->header_in->last.mem,
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275 p->header_in->end - p->header_in->last.mem);
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276
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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277 }
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278
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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279 static int ngx_http_proxy_read_response_body(ngx_event_t *ev)
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280 {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
281 ngx_connection_t *c;
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282 ngx_http_request_t *r;
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diff changeset
283 ngx_http_proxy_ctx_t *p;
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diff changeset
284
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
285 if (ev->timedout)
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286 return NGX_ERROR;
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diff changeset
287
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288 c = (ngx_connection_t *) ev->data;
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289 r = (ngx_http_request_t *) c->data;
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290 p = (ngx_http_proxy_ctx_t *) ngx_get_module_ctx(r, ngx_http_proxy_module);
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diff changeset
291
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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292 }
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
293
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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diff changeset
294 static int ngx_http_proxy_write_to_client(ngx_event_t *ev)
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295 {
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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296 /* если бэкенд быстрее, то CLEAR, иначе - ONESHOT */
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diff changeset
297
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298 rc = ngx_http_output_filter(r, h);
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299 }
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300
d7908993fdeb nginx-0.0.1-2002-12-02-19:09:40 import; resume after 2 months stall
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301 #endif