28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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248
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24 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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26 ngx_http_upstream_t *u);
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130
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27 static void
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28 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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29 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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31 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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32 ssize_t bytes);
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58
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33 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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34 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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35 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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36 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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37 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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38 static void ngx_http_upstream_cleanup(void *data);
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28
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39 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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40 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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41
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58
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42 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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43 ngx_table_elt_t *h, ngx_uint_t offset);
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44 static ngx_int_t
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45 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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48 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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49 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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50 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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51 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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53 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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55 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t
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58 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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59 ngx_table_elt_t *h, ngx_uint_t offset);
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60 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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61 ngx_table_elt_t *h, ngx_uint_t offset);
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62 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 #if (NGX_HTTP_GZIP)
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69 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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70 ngx_table_elt_t *h, ngx_uint_t offset);
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71 #endif
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72
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122
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73 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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74 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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75 ngx_http_variable_value_t *v, uintptr_t data);
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76 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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77 ngx_http_variable_value_t *v, uintptr_t data);
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78
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200
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79 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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80 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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81 void *conf);
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82
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58
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83 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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84 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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85
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126
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86 #if (NGX_HTTP_SSL)
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140
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87 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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88 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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89 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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90 #endif
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91
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58
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92
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93 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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94
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95 { ngx_string("Status"),
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96 ngx_http_upstream_process_header_line,
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97 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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98 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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99
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100 { ngx_string("Content-Type"),
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101 ngx_http_upstream_process_header_line,
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102 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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103 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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104
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105 { ngx_string("Content-Length"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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108 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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109
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110 { ngx_string("Date"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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113 ngx_http_upstream_copy_header_line,
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114 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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115
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116 { ngx_string("Server"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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119 ngx_http_upstream_copy_header_line,
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120 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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121
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78
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122 { ngx_string("WWW-Authenticate"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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125 ngx_http_upstream_copy_header_line, 0, 0 },
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126
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58
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127 { ngx_string("Location"),
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128 ngx_http_upstream_ignore_header_line, 0,
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64
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129 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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130
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131 { ngx_string("Refresh"),
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132 ngx_http_upstream_ignore_header_line, 0,
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64
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133 ngx_http_upstream_rewrite_refresh, 0, 0 },
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134
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135 { ngx_string("Set-Cookie"),
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136 ngx_http_upstream_ignore_header_line, 0,
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80
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137 ngx_http_upstream_copy_header_line, 0, 1 },
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138
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139 { ngx_string("Content-Disposition"),
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140 ngx_http_upstream_ignore_header_line, 0,
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141 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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142
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143 { ngx_string("Cache-Control"),
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144 ngx_http_upstream_process_multi_header_lines,
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145 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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146 ngx_http_upstream_copy_multi_header_lines,
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64
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147 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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148
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122
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149 { ngx_string("Expires"),
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150 ngx_http_upstream_process_header_line,
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151 offsetof(ngx_http_upstream_headers_in_t, expires),
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152 ngx_http_upstream_copy_header_line,
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153 offsetof(ngx_http_headers_out_t, expires), 1 },
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154
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126
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155 { ngx_string("Accept-Ranges"),
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156 ngx_http_upstream_process_header_line,
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157 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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158 ngx_http_upstream_copy_header_line,
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159 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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160
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58
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161 { ngx_string("Connection"),
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162 ngx_http_upstream_ignore_header_line, 0,
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163 ngx_http_upstream_ignore_header_line, 0, 0 },
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164
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190
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165 { ngx_string("Keep-Alive"),
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166 ngx_http_upstream_ignore_header_line, 0,
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167 ngx_http_upstream_ignore_header_line, 0, 0 },
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168
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58
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169 { ngx_string("X-Powered-By"),
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170 ngx_http_upstream_ignore_header_line, 0,
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198
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171 ngx_http_upstream_copy_header_line, 0, 0 },
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172
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173 { ngx_string("X-Accel-Expires"),
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174 ngx_http_upstream_process_header_line,
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175 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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176 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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177
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178 { ngx_string("X-Accel-Redirect"),
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179 ngx_http_upstream_process_header_line,
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180 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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181 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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182
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76
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183 { ngx_string("X-Accel-Limit-Rate"),
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184 ngx_http_upstream_process_limit_rate, 0,
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185 ngx_http_upstream_ignore_header_line, 0, 0 },
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186
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198
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187 { ngx_string("X-Accel-Buffering"),
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188 ngx_http_upstream_process_buffering, 0,
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189 ngx_http_upstream_ignore_header_line, 0, 0 },
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190
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206
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191 { ngx_string("X-Accel-Charset"),
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192 ngx_http_upstream_process_charset, 0,
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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194
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58
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195 #if (NGX_HTTP_GZIP)
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196 { ngx_string("Content-Encoding"),
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197 ngx_http_upstream_process_header_line,
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198 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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199 ngx_http_upstream_copy_content_encoding, 0, 0 },
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200 #endif
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201
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64
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202 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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203 };
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28
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204
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205
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200
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206 static ngx_command_t ngx_http_upstream_commands[] = {
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207
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208 { ngx_string("upstream"),
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209 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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210 ngx_http_upstream,
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211 0,
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212 0,
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213 NULL },
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214
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215 { ngx_string("server"),
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260
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216 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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217 ngx_http_upstream_server,
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218 NGX_HTTP_SRV_CONF_OFFSET,
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219 0,
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220 NULL },
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221
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222 ngx_null_command
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223 };
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224
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225
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226 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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227 ngx_http_upstream_add_variables, /* preconfiguration */
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228 NULL, /* postconfiguration */
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229
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230 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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231 ngx_http_upstream_init_main_conf, /* init main configuration */
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232
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233 NULL, /* create server configuration */
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234 NULL, /* merge server configuration */
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235
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236 NULL, /* create location configuration */
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237 NULL /* merge location configuration */
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238 };
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126
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239
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28
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240
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241 ngx_module_t ngx_http_upstream_module = {
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242 NGX_MODULE_V1,
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243 &ngx_http_upstream_module_ctx, /* module context */
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200
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244 ngx_http_upstream_commands, /* module directives */
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245 NGX_HTTP_MODULE, /* module type */
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90
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246 NULL, /* init master */
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247 NULL, /* init module */
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90
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248 NULL, /* init process */
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249 NULL, /* init thread */
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250 NULL, /* exit thread */
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251 NULL, /* exit process */
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252 NULL, /* exit master */
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253 NGX_MODULE_V1_PADDING
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28
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254 };
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255
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256
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122
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257 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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258
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186
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259 { ngx_string("upstream_status"), NULL,
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132
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260 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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261
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186
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262 { ngx_string("upstream_response_time"), NULL,
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132
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263 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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264
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186
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265 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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266 };
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267
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268
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36
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269 void
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270 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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271 {
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272 ngx_connection_t *c;
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118
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273 ngx_http_cleanup_t *cln;
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58
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274 ngx_http_upstream_t *u;
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275 ngx_http_core_loc_conf_t *clcf;
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28
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276
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277 c = r->connection;
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278
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279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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280 "http init upstream, client timer: %d", c->read->timer_set);
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281
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282 if (c->read->timer_set) {
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283 ngx_del_timer(c->read);
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284 }
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285
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178
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286 u = r->upstream;
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287
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288 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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289 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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290 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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291 }
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126
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292
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28
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293 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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294
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295 if (!c->write->active) {
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80
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296 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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297 == NGX_ERROR)
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28
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298 {
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299 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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300 return;
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301 }
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302 }
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303 }
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304
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86
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305 if (r->request_body) {
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306 u->request_bufs = r->request_body->bufs;
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307 }
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58
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308
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260
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309 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) {
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310 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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311 return;
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312 }
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313
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86
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314 if (u->create_request(r) != NGX_OK) {
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28
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315 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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316 return;
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317 }
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318
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58
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319 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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320
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321 u->output.sendfile = r->connection->sendfile;
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322 u->output.pool = r->pool;
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323 u->output.bufs.num = 1;
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58
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324 u->output.bufs.size = clcf->client_body_buffer_size;
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28
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325 u->output.output_filter = ngx_chain_writer;
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326 u->output.filter_ctx = &u->writer;
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327
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328 u->writer.pool = r->pool;
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329
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260
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330 if (ngx_array_init(&u->states, r->pool, 1,
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118
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331 sizeof(ngx_http_upstream_state_t))
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332 != NGX_OK)
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28
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333 {
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334 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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335 return;
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336 }
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337
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142
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338 cln = ngx_http_cleanup_add(r, 0);
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118
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339 if (cln == NULL) {
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340 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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341 return;
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342 }
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343
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344 cln->handler = ngx_http_upstream_cleanup;
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345 cln->data = r;
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346 u->cleanup = &cln->handler;
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347
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28
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348 ngx_http_upstream_connect(r, u);
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349 }
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350
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351
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36
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352 static void
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58
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353 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
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354 {
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355 ngx_http_upstream_check_broken_connection(r, r->connection->read);
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356 }
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357
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358
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359 static void
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360 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
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361 {
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362 ngx_http_upstream_check_broken_connection(r, r->connection->write);
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363 }
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364
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365
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366 static void
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367 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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368 ngx_event_t *ev)
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28
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369 {
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370 int n;
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371 char buf[1];
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126
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372 ngx_err_t err;
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28
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373 ngx_connection_t *c;
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374 ngx_http_upstream_t *u;
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375
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76
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376 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
377 "http upstream check client, write event:%d, \"%V\"",
|
|
378 ev->write, &r->uri);
|
28
|
379
|
58
|
380 c = r->connection;
|
32
|
381 u = r->upstream;
|
|
382
|
132
|
383 if (c->error) {
|
76
|
384 ngx_http_upstream_finalize_request(r, u,
|
|
385 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
386 return;
|
|
387 }
|
|
388
|
32
|
389 if (u->peer.connection == NULL) {
|
|
390 return;
|
|
391 }
|
|
392
|
28
|
393 #if (NGX_HAVE_KQUEUE)
|
|
394
|
|
395 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
396
|
|
397 if (!ev->pending_eof) {
|
|
398 return;
|
|
399 }
|
|
400
|
|
401 ev->eof = 1;
|
132
|
402 c->error = 1;
|
28
|
403
|
|
404 if (ev->kq_errno) {
|
|
405 ev->error = 1;
|
|
406 }
|
|
407
|
|
408 if (!u->cachable && u->peer.connection) {
|
|
409 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
76
|
410 "kevent() reported that client closed prematurely "
|
|
411 "connection, so upstream connection is closed too");
|
28
|
412 ngx_http_upstream_finalize_request(r, u,
|
|
413 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
414 return;
|
|
415 }
|
|
416
|
|
417 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
418 "kevent() reported that client closed "
|
|
419 "prematurely connection");
|
|
420
|
|
421 if (u->peer.connection == NULL) {
|
|
422 ngx_http_upstream_finalize_request(r, u,
|
|
423 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
424 return;
|
|
425 }
|
|
426
|
|
427 return;
|
|
428 }
|
|
429
|
|
430 #endif
|
|
431
|
|
432 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
433
|
|
434 err = ngx_socket_errno;
|
|
435
|
|
436 /*
|
|
437 * we do not need to disable the write event because
|
|
438 * that event has NGX_USE_CLEAR_EVENT type
|
|
439 */
|
|
440
|
|
441 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
442 return;
|
|
443 }
|
|
444
|
|
445 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
446 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
447 ngx_http_upstream_finalize_request(r, u,
|
|
448 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
449 return;
|
|
450 }
|
|
451 }
|
|
452
|
|
453 if (n > 0) {
|
|
454 return;
|
|
455 }
|
|
456
|
|
457 if (n == -1) {
|
|
458 if (err == NGX_EAGAIN) {
|
|
459 return;
|
|
460 }
|
|
461
|
|
462 ev->error = 1;
|
|
463
|
32
|
464 } else { /* n == 0 */
|
28
|
465 err = 0;
|
|
466 }
|
|
467
|
78
|
468 ev->eof = 1;
|
132
|
469 c->error = 1;
|
78
|
470
|
28
|
471 if (!u->cachable && u->peer.connection) {
|
|
472 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
473 "client closed prematurely connection, "
|
|
474 "so upstream connection is closed too");
|
|
475 ngx_http_upstream_finalize_request(r, u,
|
|
476 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
477 return;
|
|
478 }
|
|
479
|
|
480 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
481 "client closed prematurely connection");
|
|
482
|
|
483 if (u->peer.connection == NULL) {
|
|
484 ngx_http_upstream_finalize_request(r, u,
|
|
485 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
486 return;
|
|
487 }
|
|
488 }
|
|
489
|
|
490
|
36
|
491 static void
|
|
492 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
493 {
|
140
|
494 ngx_int_t rc;
|
214
|
495 ngx_time_t *tp;
|
140
|
496 ngx_connection_t *c;
|
28
|
497
|
32
|
498 r->connection->log->action = "connecting to upstream";
|
28
|
499
|
|
500 r->connection->single_connection = 0;
|
|
501
|
262
|
502 if (u->state && u->state->response_sec) {
|
214
|
503 tp = ngx_timeofday();
|
262
|
504 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
505 u->state->response_msec = tp->msec - u->state->response_msec;
|
214
|
506 }
|
|
507
|
|
508 u->state = ngx_array_push(&u->states);
|
|
509 if (u->state == NULL) {
|
|
510 ngx_http_upstream_finalize_request(r, u,
|
|
511 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
512 return;
|
|
513 }
|
|
514
|
|
515 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
516
|
|
517 tp = ngx_timeofday();
|
262
|
518 u->state->response_sec = tp->sec;
|
|
519 u->state->response_msec = tp->msec;
|
214
|
520
|
28
|
521 rc = ngx_event_connect_peer(&u->peer);
|
|
522
|
|
523 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
524 "http upstream connect: %i", rc);
|
|
525
|
|
526 if (rc == NGX_ERROR) {
|
|
527 ngx_http_upstream_finalize_request(r, u,
|
|
528 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
529 return;
|
|
530 }
|
|
531
|
260
|
532 u->state->peer = u->peer.name;
|
28
|
533
|
92
|
534 if (rc == NGX_BUSY) {
|
|
535 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
536 }
|
|
537
|
|
538 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
28
|
539 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
540 return;
|
|
541 }
|
|
542
|
126
|
543 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
544
|
28
|
545 c = u->peer.connection;
|
|
546
|
|
547 c->data = r;
|
140
|
548
|
58
|
549 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
550 c->read->handler = ngx_http_upstream_process_header;
|
28
|
551
|
|
552 c->sendfile = r->connection->sendfile;
|
|
553
|
|
554 c->pool = r->pool;
|
|
555 c->read->log = c->write->log = c->log = r->connection->log;
|
|
556
|
|
557 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
558
|
|
559 u->writer.out = NULL;
|
|
560 u->writer.last = &u->writer.out;
|
|
561 u->writer.connection = c;
|
|
562 u->writer.limit = 0;
|
|
563
|
|
564 if (u->request_sent) {
|
58
|
565 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
566 ngx_http_upstream_finalize_request(r, u,
|
|
567 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
568 return;
|
|
569 }
|
28
|
570 }
|
|
571
|
276
|
572 if (r->request_body
|
|
573 && r->request_body->buf
|
|
574 && r->request_body->temp_file
|
|
575 && r == r->main)
|
|
576 {
|
122
|
577 /*
|
|
578 * the r->request_body->buf can be reused for one request only,
|
|
579 * the subrequests should allocate their own temporay bufs
|
|
580 */
|
|
581
|
|
582 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
583 if (u->output.free == NULL) {
|
|
584 ngx_http_upstream_finalize_request(r, u,
|
|
585 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
586 return;
|
28
|
587 }
|
122
|
588
|
|
589 u->output.free->buf = r->request_body->buf;
|
|
590 u->output.free->next = NULL;
|
|
591 u->output.allocated = 1;
|
|
592
|
|
593 r->request_body->buf->pos = r->request_body->buf->start;
|
|
594 r->request_body->buf->last = r->request_body->buf->start;
|
|
595 r->request_body->buf->tag = u->output.tag;
|
28
|
596 }
|
|
597
|
|
598 u->request_sent = 0;
|
|
599
|
|
600 if (rc == NGX_AGAIN) {
|
|
601 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
602 return;
|
|
603 }
|
|
604
|
126
|
605 #if (NGX_HTTP_SSL)
|
|
606
|
140
|
607 if (u->conf->ssl && c->ssl == NULL) {
|
|
608 ngx_http_upstream_ssl_init_connection(r, u, c);
|
126
|
609 return;
|
|
610 }
|
|
611
|
|
612 #endif
|
|
613
|
28
|
614 ngx_http_upstream_send_request(r, u);
|
|
615 }
|
|
616
|
|
617
|
126
|
618 #if (NGX_HTTP_SSL)
|
|
619
|
|
620 static void
|
140
|
621 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
622 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
623 {
|
260
|
624 ngx_int_t rc;
|
140
|
625
|
|
626 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
627 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
628 == NGX_ERROR)
|
|
629 {
|
|
630 ngx_http_upstream_finalize_request(r, u,
|
|
631 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
632 return;
|
|
633 }
|
|
634
|
|
635 c->sendfile = 0;
|
168
|
636 u->output.sendfile = 0;
|
140
|
637
|
260
|
638 if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) {
|
140
|
639 ngx_http_upstream_finalize_request(r, u,
|
|
640 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
641 return;
|
|
642 }
|
|
643
|
190
|
644 r->connection->log->action = "SSL handshaking to upstream";
|
|
645
|
140
|
646 rc = ngx_ssl_handshake(c);
|
|
647
|
|
648 if (rc == NGX_AGAIN) {
|
|
649 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
650 return;
|
|
651 }
|
|
652
|
|
653 ngx_http_upstream_ssl_handshake(c);
|
|
654 }
|
|
655
|
|
656
|
|
657 static void
|
126
|
658 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
659 {
|
|
660 ngx_http_request_t *r;
|
|
661 ngx_http_upstream_t *u;
|
|
662
|
|
663 r = c->data;
|
|
664 u = r->upstream;
|
|
665
|
|
666 if (c->ssl->handshaked) {
|
|
667
|
260
|
668 u->peer.save_session(&u->peer, u->peer.data);
|
|
669
|
126
|
670 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
671 c->read->handler = ngx_http_upstream_process_header;
|
|
672
|
|
673 ngx_http_upstream_send_request(r, u);
|
|
674
|
|
675 return;
|
|
676 }
|
|
677
|
|
678 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
679
|
|
680 }
|
|
681
|
|
682 #endif
|
|
683
|
|
684
|
58
|
685 static ngx_int_t
|
36
|
686 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
687 {
|
|
688 ngx_chain_t *cl;
|
|
689
|
58
|
690 if (u->reinit_request(r) != NGX_OK) {
|
|
691 return NGX_ERROR;
|
|
692 }
|
|
693
|
|
694 ngx_memzero(&r->upstream->headers_in,
|
|
695 sizeof(ngx_http_upstream_headers_in_t));
|
|
696
|
|
697 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
140
|
698 sizeof(ngx_table_elt_t))
|
|
699 != NGX_OK)
|
58
|
700 {
|
|
701 return NGX_ERROR;
|
28
|
702 }
|
|
703
|
|
704 /* reinit the request chain */
|
126
|
705
|
58
|
706 for (cl = u->request_bufs; cl; cl = cl->next) {
|
28
|
707 cl->buf->pos = cl->buf->start;
|
|
708 cl->buf->file_pos = 0;
|
|
709 }
|
|
710
|
58
|
711 /* reinit the subrequest's ngx_output_chain() context */
|
|
712
|
122
|
713 if (r->request_body && r->request_body->temp_file
|
146
|
714 && r != r->main && u->output.buf)
|
122
|
715 {
|
|
716 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
717 if (u->output.free == NULL) {
|
|
718 return NGX_ERROR;
|
58
|
719 }
|
122
|
720
|
|
721 u->output.free->buf = u->output.buf;
|
|
722 u->output.free->next = NULL;
|
|
723
|
|
724 u->output.buf->pos = u->output.buf->start;
|
|
725 u->output.buf->last = u->output.buf->start;
|
58
|
726 }
|
28
|
727
|
|
728 u->output.buf = NULL;
|
|
729 u->output.in = NULL;
|
|
730 u->output.busy = NULL;
|
126
|
731
|
130
|
732 /* reinit u->buffer */
|
126
|
733
|
28
|
734 #if 0
|
|
735 if (u->cache) {
|
130
|
736 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
737 u->buffer.last = u->buffer.pos;
|
28
|
738
|
|
739 } else {
|
130
|
740 u->buffer.pos = u->buffer.start;
|
|
741 u->buffer.last = u->buffer.start;
|
28
|
742 }
|
|
743 #else
|
58
|
744
|
130
|
745 u->buffer.pos = u->buffer.start;
|
|
746 u->buffer.last = u->buffer.start;
|
58
|
747
|
28
|
748 #endif
|
|
749
|
58
|
750 return NGX_OK;
|
28
|
751 }
|
|
752
|
|
753
|
36
|
754 static void
|
|
755 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
756 {
|
220
|
757 int rc, err;
|
|
758 socklen_t len;
|
32
|
759 ngx_connection_t *c;
|
126
|
760
|
28
|
761 c = u->peer.connection;
|
|
762
|
|
763 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
764 "http upstream send request");
|
|
765
|
220
|
766 if (!u->request_sent) {
|
|
767
|
28
|
768 #if (NGX_HAVE_KQUEUE)
|
|
769
|
220
|
770 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
771 if (c->write->pending_eof) {
|
|
772 (void) ngx_connection_error(c, c->write->kq_errno,
|
86
|
773 "kevent() reported that connect() failed");
|
220
|
774 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
775 return;
|
|
776 }
|
|
777
|
|
778 } else
|
|
779 #endif
|
|
780 {
|
|
781 err = 0;
|
|
782 len = sizeof(int);
|
|
783
|
|
784 /*
|
|
785 * BSDs and Linux return 0 and set a pending error in err
|
|
786 * Solaris returns -1 and sets errno
|
|
787 */
|
|
788
|
|
789 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
790 == -1)
|
|
791 {
|
|
792 err = ngx_errno;
|
|
793 }
|
|
794
|
|
795 if (err) {
|
|
796 (void) ngx_connection_error(c, err, "connect() failed");
|
|
797 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
798 return;
|
|
799 }
|
|
800 }
|
28
|
801 }
|
|
802
|
32
|
803 c->log->action = "sending request to upstream";
|
28
|
804
|
58
|
805 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
28
|
806
|
|
807 u->request_sent = 1;
|
|
808
|
|
809 if (rc == NGX_ERROR) {
|
|
810 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
811 return;
|
|
812 }
|
|
813
|
|
814 if (c->write->timer_set) {
|
|
815 ngx_del_timer(c->write);
|
|
816 }
|
|
817
|
|
818 if (rc == NGX_AGAIN) {
|
|
819 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
820
|
|
821 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
822 {
|
|
823 ngx_http_upstream_finalize_request(r, u,
|
|
824 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
825 return;
|
|
826 }
|
|
827
|
|
828 return;
|
|
829 }
|
|
830
|
|
831 /* rc == NGX_OK */
|
|
832
|
|
833 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
834 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
835 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
836 ngx_tcp_push_n " failed");
|
|
837 ngx_http_upstream_finalize_request(r, u,
|
|
838 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
126
|
839 return;
|
28
|
840 }
|
|
841
|
|
842 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
843 }
|
126
|
844
|
28
|
845 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
846
|
|
847 #if 1
|
|
848 if (c->read->ready) {
|
126
|
849
|
28
|
850 /* post aio operation */
|
|
851
|
|
852 /*
|
|
853 * TODO comment
|
|
854 * although we can post aio operation just in the end
|
|
855 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
856 * it's better to do here because we postpone header buffer allocation
|
|
857 */
|
|
858
|
|
859 ngx_http_upstream_process_header(c->read);
|
|
860 return;
|
|
861 }
|
|
862 #endif
|
|
863
|
58
|
864 c->write->handler = ngx_http_upstream_dummy_handler;
|
28
|
865
|
58
|
866 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
28
|
867 ngx_http_upstream_finalize_request(r, u,
|
|
868 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
869 return;
|
|
870 }
|
|
871 }
|
|
872
|
|
873
|
36
|
874 static void
|
|
875 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
28
|
876 {
|
|
877 ngx_connection_t *c;
|
|
878 ngx_http_request_t *r;
|
|
879 ngx_http_upstream_t *u;
|
|
880
|
|
881 c = wev->data;
|
|
882 r = c->data;
|
|
883 u = r->upstream;
|
|
884
|
|
885 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
886 "http upstream send request handler");
|
|
887
|
|
888 if (wev->timedout) {
|
|
889 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
890 return;
|
|
891 }
|
|
892
|
140
|
893 #if (NGX_HTTP_SSL)
|
|
894
|
|
895 if (u->conf->ssl && c->ssl == NULL) {
|
|
896 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
897 return;
|
|
898 }
|
|
899
|
|
900 #endif
|
|
901
|
200
|
902 if (u->header_sent) {
|
|
903 wev->handler = ngx_http_upstream_dummy_handler;
|
|
904
|
|
905 (void) ngx_handle_write_event(wev, 0);
|
|
906
|
|
907 return;
|
|
908 }
|
|
909
|
28
|
910 ngx_http_upstream_send_request(r, u);
|
|
911 }
|
|
912
|
|
913
|
36
|
914 static void
|
|
915 ngx_http_upstream_process_header(ngx_event_t *rev)
|
28
|
916 {
|
64
|
917 ssize_t n;
|
|
918 ngx_int_t rc;
|
122
|
919 ngx_str_t *uri, args;
|
198
|
920 ngx_uint_t i, flags;
|
64
|
921 ngx_list_part_t *part;
|
|
922 ngx_table_elt_t *h;
|
|
923 ngx_connection_t *c;
|
|
924 ngx_http_request_t *r;
|
|
925 ngx_http_upstream_t *u;
|
|
926 ngx_http_err_page_t *err_page;
|
|
927 ngx_http_core_loc_conf_t *clcf;
|
|
928 ngx_http_upstream_header_t *hh;
|
|
929 ngx_http_upstream_main_conf_t *umcf;
|
28
|
930
|
|
931 c = rev->data;
|
|
932 r = c->data;
|
|
933 u = r->upstream;
|
|
934
|
|
935 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
32
|
936 "http upstream process header");
|
28
|
937
|
32
|
938 c->log->action = "reading response header from upstream";
|
28
|
939
|
|
940 if (rev->timedout) {
|
|
941 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
942 return;
|
|
943 }
|
126
|
944
|
130
|
945 if (u->buffer.start == NULL) {
|
|
946 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
947 if (u->buffer.start == NULL) {
|
28
|
948 ngx_http_upstream_finalize_request(r, u,
|
|
949 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
950 return;
|
|
951 }
|
|
952
|
130
|
953 u->buffer.pos = u->buffer.start;
|
|
954 u->buffer.last = u->buffer.start;
|
|
955 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
956 u->buffer.temporary = 1;
|
|
957
|
|
958 u->buffer.tag = u->output.tag;
|
28
|
959
|
58
|
960 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
130
|
961 sizeof(ngx_table_elt_t))
|
|
962 != NGX_OK)
|
58
|
963 {
|
|
964 ngx_http_upstream_finalize_request(r, u,
|
|
965 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
966 return;
|
|
967 }
|
|
968
|
28
|
969 #if 0
|
|
970 if (u->cache) {
|
130
|
971 u->buffer.pos += u->cache->ctx.header_size;
|
|
972 u->buffer.last = u->buffer.pos;
|
28
|
973 }
|
|
974 #endif
|
|
975 }
|
|
976
|
130
|
977 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
260
|
978 u->buffer.end - u->buffer.last);
|
28
|
979
|
|
980 if (n == NGX_AGAIN) {
|
|
981 #if 0
|
|
982 ngx_add_timer(rev, u->read_timeout);
|
|
983 #endif
|
|
984
|
|
985 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
986 ngx_http_upstream_finalize_request(r, u,
|
|
987 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
988 return;
|
|
989 }
|
|
990
|
|
991 return;
|
|
992 }
|
|
993
|
|
994 if (n == 0) {
|
|
995 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
996 "upstream prematurely closed connection");
|
|
997 }
|
|
998
|
|
999 if (n == NGX_ERROR || n == 0) {
|
|
1000 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1001 return;
|
|
1002 }
|
|
1003
|
130
|
1004 u->buffer.last += n;
|
28
|
1005
|
|
1006 #if 0
|
|
1007 u->valid_header_in = 0;
|
|
1008
|
|
1009 u->peer.cached = 0;
|
|
1010 #endif
|
|
1011
|
|
1012 rc = u->process_header(r);
|
|
1013
|
|
1014 if (rc == NGX_AGAIN) {
|
|
1015 #if 0
|
|
1016 ngx_add_timer(rev, u->read_timeout);
|
|
1017 #endif
|
|
1018
|
130
|
1019 if (u->buffer.pos == u->buffer.end) {
|
28
|
1020 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
1021 "upstream sent too big header");
|
|
1022
|
|
1023 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1024 return;
|
|
1025 }
|
|
1026
|
|
1027 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
1028 ngx_http_upstream_finalize_request(r, u,
|
|
1029 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1030 return;
|
|
1031 }
|
|
1032
|
|
1033 return;
|
|
1034 }
|
|
1035
|
|
1036 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
1037 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1038 return;
|
|
1039 }
|
|
1040
|
|
1041 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
1042 ngx_http_upstream_finalize_request(r, u,
|
|
1043 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1044 return;
|
|
1045 }
|
|
1046
|
|
1047 /* rc == NGX_OK */
|
|
1048
|
248
|
1049 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
1050 && r->subrequest_in_memory)
|
|
1051 {
|
|
1052 u->buffer.last = u->buffer.pos;
|
|
1053 }
|
|
1054
|
78
|
1055 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
58
|
1056
|
|
1057 if (u->peer.tries > 1
|
|
1058 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
1059 {
|
|
1060 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
1061 return;
|
|
1062 }
|
|
1063
|
|
1064 #if (NGX_HTTP_CACHE)
|
|
1065
|
|
1066 if (u->peer.tries == 0
|
|
1067 && u->stale
|
|
1068 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
1069 {
|
|
1070 ngx_http_upstream_finalize_request(r, u,
|
78
|
1071 ngx_http_send_cached_response(r));
|
58
|
1072 return;
|
|
1073 }
|
|
1074
|
|
1075 #endif
|
|
1076 }
|
|
1077
|
146
|
1078 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
1079
|
|
1080 if (u->peer.tries > 1
|
|
1081 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
1082 {
|
|
1083 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
1084 return;
|
|
1085 }
|
|
1086
|
224
|
1087 if (u->conf->intercept_404) {
|
|
1088 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
146
|
1089 return;
|
|
1090 }
|
58
|
1091 }
|
|
1092
|
|
1093
|
78
|
1094 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
224
|
1095 && u->conf->intercept_errors)
|
36
|
1096 {
|
|
1097 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1098
|
|
1099 if (clcf->error_pages) {
|
|
1100
|
|
1101 err_page = clcf->error_pages->elts;
|
|
1102 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
78
|
1103 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
1104
|
|
1105 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
1106
|
|
1107 r->headers_out.www_authenticate =
|
|
1108 ngx_list_push(&r->headers_out.headers);
|
|
1109
|
|
1110 if (r->headers_out.www_authenticate == NULL) {
|
|
1111 ngx_http_upstream_finalize_request(r, u,
|
|
1112 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1113 return;
|
|
1114 }
|
|
1115
|
126
|
1116 *r->headers_out.www_authenticate =
|
78
|
1117 *u->headers_in.www_authenticate;
|
|
1118 }
|
|
1119
|
36
|
1120 ngx_http_upstream_finalize_request(r, u,
|
78
|
1121 u->headers_in.status_n);
|
36
|
1122 return;
|
|
1123 }
|
|
1124 }
|
|
1125 }
|
|
1126 }
|
|
1127
|
230
|
1128 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1129
|
64
|
1130 if (r->upstream->headers_in.x_accel_redirect) {
|
244
|
1131
|
64
|
1132 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1133
|
|
1134 part = &r->upstream->headers_in.headers.part;
|
|
1135 h = part->elts;
|
|
1136
|
|
1137 for (i = 0; /* void */; i++) {
|
|
1138
|
|
1139 if (i >= part->nelts) {
|
|
1140 if (part->next == NULL) {
|
|
1141 break;
|
|
1142 }
|
126
|
1143
|
64
|
1144 part = part->next;
|
|
1145 h = part->elts;
|
|
1146 i = 0;
|
|
1147 }
|
|
1148
|
198
|
1149 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1150 h[i].lowcase_key, h[i].key.len);
|
|
1151
|
|
1152 if (hh && hh->redirect) {
|
|
1153 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
250
|
1154 ngx_http_finalize_request(r,
|
244
|
1155 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
64
|
1156 return;
|
|
1157 }
|
|
1158 }
|
|
1159 }
|
|
1160
|
122
|
1161 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
1162 args.len = 0;
|
|
1163 args.data = NULL;
|
|
1164 flags = 0;
|
|
1165
|
|
1166 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
244
|
1167 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
122
|
1168 return;
|
|
1169 }
|
|
1170
|
|
1171 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
1172 r->zero_in_uri = 1;
|
|
1173 }
|
|
1174
|
202
|
1175 if (r->method != NGX_HTTP_HEAD) {
|
|
1176 r->method = NGX_HTTP_GET;
|
|
1177 }
|
|
1178
|
122
|
1179 ngx_http_internal_redirect(r, uri, &args);
|
64
|
1180 return;
|
|
1181 }
|
|
1182
|
58
|
1183 part = &r->upstream->headers_in.headers.part;
|
|
1184 h = part->elts;
|
|
1185
|
|
1186 for (i = 0; /* void */; i++) {
|
28
|
1187
|
58
|
1188 if (i >= part->nelts) {
|
|
1189 if (part->next == NULL) {
|
|
1190 break;
|
|
1191 }
|
126
|
1192
|
58
|
1193 part = part->next;
|
|
1194 h = part->elts;
|
|
1195 i = 0;
|
|
1196 }
|
|
1197
|
198
|
1198 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
1199 h[i].lowcase_key, h[i].key.len))
|
58
|
1200 {
|
198
|
1201 continue;
|
|
1202 }
|
|
1203
|
|
1204 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1205 h[i].lowcase_key, h[i].key.len);
|
|
1206
|
|
1207 if (hh) {
|
|
1208 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
58
|
1209 ngx_http_upstream_finalize_request(r, u,
|
|
1210 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1211 return;
|
|
1212 }
|
|
1213
|
|
1214 continue;
|
|
1215 }
|
|
1216
|
|
1217 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1218 ngx_http_upstream_finalize_request(r, u,
|
|
1219 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1220 return;
|
|
1221 }
|
|
1222 }
|
|
1223
|
198
|
1224 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
1225 r->headers_out.server->hash = 0;
|
|
1226 }
|
|
1227
|
|
1228 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
1229 r->headers_out.date->hash = 0;
|
|
1230 }
|
|
1231
|
78
|
1232 r->headers_out.status = u->headers_in.status_n;
|
|
1233 r->headers_out.status_line = u->headers_in.status_line;
|
|
1234
|
130
|
1235 if (r->headers_out.content_length_n != -1) {
|
|
1236 u->length = (size_t) r->headers_out.content_length_n;
|
|
1237
|
|
1238 } else {
|
|
1239 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1240 }
|
|
1241
|
248
|
1242 if (!r->subrequest_in_memory) {
|
|
1243 ngx_http_upstream_send_response(r, u);
|
|
1244 return;
|
|
1245 }
|
|
1246
|
|
1247 /* subrequest content in memory */
|
|
1248
|
|
1249 if (u->input_filter == NULL) {
|
|
1250 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1251 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1252 u->input_filter_ctx = r;
|
|
1253 }
|
|
1254
|
|
1255 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1256 ngx_http_upstream_finalize_request(r, u,
|
|
1257 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1258 return;
|
|
1259 }
|
|
1260
|
|
1261 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
1262 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
1263 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1264 return;
|
|
1265 }
|
|
1266
|
|
1267 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1268 return;
|
|
1269 }
|
|
1270
|
|
1271 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
1272
|
|
1273 ngx_http_upstream_process_body_in_memory(rev);
|
|
1274 }
|
|
1275
|
|
1276
|
|
1277 static void
|
|
1278 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
1279 {
|
|
1280 size_t size;
|
|
1281 ssize_t n;
|
|
1282 ngx_buf_t *b;
|
|
1283 ngx_connection_t *c;
|
|
1284 ngx_http_request_t *r;
|
|
1285 ngx_http_upstream_t *u;
|
|
1286
|
|
1287 c = rev->data;
|
|
1288 r = c->data;
|
|
1289 u = r->upstream;
|
|
1290
|
|
1291 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1292 "http upstream process body on memory");
|
|
1293
|
|
1294 if (rev->timedout) {
|
|
1295 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
1296 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
1297 return;
|
|
1298 }
|
|
1299
|
|
1300 b = &u->buffer;
|
|
1301
|
|
1302 for ( ;; ) {
|
|
1303
|
|
1304 size = b->end - b->last;
|
|
1305
|
|
1306 if (size == 0) {
|
|
1307 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
1308 "upstream buffer is too small to read repsonse");
|
|
1309 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1310 return;
|
|
1311 }
|
|
1312
|
|
1313 n = c->recv(c, b->last, size);
|
|
1314
|
|
1315 if (n == NGX_AGAIN) {
|
|
1316 break;
|
|
1317 }
|
|
1318
|
|
1319 if (n == 0 || n == NGX_ERROR) {
|
|
1320 ngx_http_upstream_finalize_request(r, u, n);
|
|
1321 return;
|
|
1322 }
|
|
1323
|
|
1324 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1325 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1326 return;
|
|
1327 }
|
|
1328
|
|
1329 if (!rev->ready) {
|
|
1330 break;
|
|
1331 }
|
|
1332 }
|
|
1333
|
|
1334 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
1335 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1336 return;
|
|
1337 }
|
|
1338
|
|
1339 if (rev->active) {
|
|
1340 ngx_add_timer(rev, u->conf->read_timeout);
|
|
1341
|
|
1342 } else if (rev->timer_set) {
|
|
1343 ngx_del_timer(rev);
|
|
1344 }
|
230
|
1345 }
|
|
1346
|
|
1347
|
|
1348 static void
|
|
1349 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1350 {
|
|
1351 int tcp_nodelay;
|
|
1352 ssize_t size;
|
|
1353 ngx_int_t rc;
|
|
1354 ngx_event_pipe_t *p;
|
|
1355 ngx_connection_t *c;
|
|
1356 ngx_pool_cleanup_t *cl;
|
|
1357 ngx_pool_cleanup_file_t *clf;
|
|
1358 ngx_http_core_loc_conf_t *clcf;
|
|
1359
|
58
|
1360 rc = ngx_http_send_header(r);
|
28
|
1361
|
274
|
1362 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
34
|
1363 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
1364 return;
|
|
1365 }
|
|
1366
|
|
1367 u->header_sent = 1;
|
|
1368
|
122
|
1369 if (r->request_body && r->request_body->temp_file) {
|
112
|
1370 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
1371 if (cl->handler == ngx_pool_cleanup_file) {
|
|
1372 clf = cl->data;
|
|
1373
|
|
1374 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
1375 cl->handler(clf);
|
|
1376 cl->handler = NULL;
|
208
|
1377 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
112
|
1378 break;
|
|
1379 }
|
|
1380 }
|
|
1381 }
|
|
1382 }
|
|
1383
|
132
|
1384 c = r->connection;
|
|
1385
|
130
|
1386 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1387
|
198
|
1388 if (!u->buffering) {
|
130
|
1389
|
|
1390 if (u->input_filter == NULL) {
|
|
1391 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1392 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1393 u->input_filter_ctx = r;
|
|
1394 }
|
|
1395
|
|
1396 u->peer.connection->read->handler =
|
|
1397 ngx_http_upstream_process_non_buffered_body;
|
|
1398 r->write_event_handler =
|
|
1399 ngx_http_upstream_process_non_buffered_downstream;
|
|
1400
|
|
1401 r->limit_rate = 0;
|
|
1402
|
|
1403 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1404 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1405 return;
|
|
1406 }
|
|
1407
|
132
|
1408 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
1409 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
1410
|
|
1411 tcp_nodelay = 1;
|
|
1412
|
|
1413 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
1414 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
1415 {
|
|
1416 ngx_connection_error(c, ngx_socket_errno,
|
|
1417 "setsockopt(TCP_NODELAY) failed");
|
|
1418 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1419 return;
|
|
1420 }
|
|
1421
|
|
1422 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
1423 }
|
|
1424
|
130
|
1425 size = u->buffer.last - u->buffer.pos;
|
|
1426
|
|
1427 if (size) {
|
|
1428 u->buffer.last = u->buffer.pos;
|
|
1429
|
|
1430 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
1431 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1432 return;
|
|
1433 }
|
|
1434
|
132
|
1435 ngx_http_upstream_process_non_buffered_body(c->write);
|
130
|
1436
|
|
1437 } else {
|
|
1438 u->buffer.pos = u->buffer.start;
|
|
1439 u->buffer.last = u->buffer.start;
|
|
1440
|
|
1441 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
1442 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1443 return;
|
|
1444 }
|
|
1445 }
|
|
1446
|
|
1447 return;
|
|
1448 }
|
|
1449
|
28
|
1450 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
1451
|
|
1452 #if 0
|
|
1453
|
|
1454 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
1455 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
132
|
1456 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
28
|
1457 ngx_close_file_n " \"%s\" failed",
|
|
1458 u->cache->ctx.file.name.data);
|
|
1459 }
|
|
1460 }
|
|
1461
|
|
1462 if (u->cachable) {
|
130
|
1463 header = (ngx_http_cache_header_t *) u->buffer->start;
|
28
|
1464
|
|
1465 header->expires = u->cache->ctx.expires;
|
|
1466 header->last_modified = u->cache->ctx.last_modified;
|
|
1467 header->date = u->cache->ctx.date;
|
|
1468 header->length = r->headers_out.content_length_n;
|
|
1469 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
1470
|
|
1471 header->key_len = u->cache->ctx.key0.len;
|
|
1472 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
1473 header->key[header->key_len] = LF;
|
|
1474 }
|
|
1475
|
|
1476 #endif
|
|
1477
|
130
|
1478 p = u->pipe;
|
28
|
1479
|
|
1480 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
1481 p->output_ctx = r;
|
|
1482 p->tag = u->output.tag;
|
126
|
1483 p->bufs = u->conf->bufs;
|
28
|
1484 p->busy_size = u->conf->busy_buffers_size;
|
|
1485 p->upstream = u->peer.connection;
|
132
|
1486 p->downstream = c;
|
28
|
1487 p->pool = r->pool;
|
132
|
1488 p->log = c->log;
|
126
|
1489
|
28
|
1490 p->cachable = u->cachable;
|
|
1491
|
50
|
1492 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
1493 if (p->temp_file == NULL) {
|
28
|
1494 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1495 return;
|
|
1496 }
|
|
1497
|
|
1498 p->temp_file->file.fd = NGX_INVALID_FILE;
|
132
|
1499 p->temp_file->file.log = c->log;
|
28
|
1500 p->temp_file->path = u->conf->temp_path;
|
|
1501 p->temp_file->pool = r->pool;
|
126
|
1502
|
28
|
1503 if (u->cachable) {
|
|
1504 p->temp_file->persistent = 1;
|
|
1505 } else {
|
216
|
1506 p->temp_file->log_level = NGX_LOG_WARN;
|
28
|
1507 p->temp_file->warn = "an upstream response is buffered "
|
|
1508 "to a temporary file";
|
|
1509 }
|
|
1510
|
|
1511 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
1512 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
1513
|
50
|
1514 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
1515 if (p->preread_bufs == NULL) {
|
28
|
1516 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1517 return;
|
|
1518 }
|
130
|
1519 p->preread_bufs->buf = &u->buffer;
|
28
|
1520 p->preread_bufs->next = NULL;
|
130
|
1521 u->buffer.recycled = 1;
|
|
1522
|
|
1523 p->preread_size = u->buffer.last - u->buffer.pos;
|
28
|
1524
|
|
1525 if (u->cachable) {
|
|
1526 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
1527 if (p->buf_to_file == NULL) {
|
|
1528 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1529 return;
|
|
1530 }
|
130
|
1531 p->buf_to_file->pos = u->buffer.start;
|
|
1532 p->buf_to_file->last = u->buffer.pos;
|
28
|
1533 p->buf_to_file->temporary = 1;
|
|
1534 }
|
|
1535
|
|
1536 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
1537 /* the posted aio operation may currupt a shadow buffer */
|
|
1538 p->single_buf = 1;
|
|
1539 }
|
|
1540
|
|
1541 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
1542 p->free_bufs = 1;
|
|
1543
|
|
1544 /*
|
130
|
1545 * event_pipe would do u->buffer.last += p->preread_size
|
28
|
1546 * as though these bytes were read
|
|
1547 */
|
130
|
1548 u->buffer.last = u->buffer.pos;
|
28
|
1549
|
|
1550 if (u->conf->cyclic_temp_file) {
|
|
1551
|
|
1552 /*
|
|
1553 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
1554 * because the writing a new data may interfere with sendfile()
|
|
1555 * that uses the same kernel file pages (at least on FreeBSD)
|
|
1556 */
|
|
1557
|
|
1558 p->cyclic_temp_file = 1;
|
132
|
1559 c->sendfile = 0;
|
28
|
1560
|
|
1561 } else {
|
|
1562 p->cyclic_temp_file = 0;
|
|
1563 }
|
|
1564
|
|
1565 p->read_timeout = u->conf->read_timeout;
|
|
1566 p->send_timeout = clcf->send_timeout;
|
|
1567 p->send_lowat = clcf->send_lowat;
|
|
1568
|
58
|
1569 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
1570 r->write_event_handler = ngx_http_upstream_process_downstream;
|
28
|
1571
|
|
1572 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
1573 }
|
|
1574
|
|
1575
|
36
|
1576 static void
|
130
|
1577 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
1578 {
|
|
1579 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
1580 }
|
|
1581
|
|
1582
|
|
1583 static void
|
|
1584 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
1585 {
|
|
1586 size_t size;
|
|
1587 ssize_t n;
|
|
1588 ngx_buf_t *b;
|
132
|
1589 ngx_int_t rc;
|
130
|
1590 ngx_uint_t do_write;
|
260
|
1591 ngx_connection_t *c, *downstream, *upstream;
|
130
|
1592 ngx_http_request_t *r;
|
|
1593 ngx_http_upstream_t *u;
|
|
1594 ngx_http_core_loc_conf_t *clcf;
|
|
1595
|
|
1596 c = ev->data;
|
244
|
1597 r = c->data;
|
|
1598 u = r->upstream;
|
130
|
1599
|
|
1600 if (ev->write) {
|
|
1601 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1602 "http upstream process non buffered downstream");
|
|
1603 c->log->action = "sending to client";
|
|
1604
|
|
1605 } else {
|
|
1606 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1607 "http upstream process non buffered upstream");
|
|
1608 c->log->action = "reading upstream";
|
|
1609 }
|
|
1610
|
|
1611 if (ev->timedout) {
|
|
1612 if (ev->write) {
|
|
1613 c->timedout = 1;
|
160
|
1614 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
1615
|
130
|
1616 } else {
|
160
|
1617 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
130
|
1618 }
|
244
|
1619
|
|
1620 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1621 return;
|
130
|
1622 }
|
|
1623
|
260
|
1624 downstream = r->connection;
|
|
1625 upstream = u->peer.connection;
|
130
|
1626
|
|
1627 b = &u->buffer;
|
|
1628
|
|
1629 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1630
|
206
|
1631 do_write = ev->write || u->length == 0;
|
130
|
1632
|
|
1633 for ( ;; ) {
|
|
1634
|
|
1635 if (do_write) {
|
|
1636
|
|
1637 if (u->out_bufs || u->busy_bufs) {
|
132
|
1638 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
1639
|
260
|
1640 if (downstream->destroyed) {
|
132
|
1641 return;
|
|
1642 }
|
|
1643
|
|
1644 if (rc == NGX_ERROR) {
|
130
|
1645 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1646 return;
|
|
1647 }
|
|
1648
|
|
1649 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
1650 &u->out_bufs, u->output.tag);
|
|
1651 }
|
|
1652
|
|
1653 if (u->busy_bufs == NULL) {
|
|
1654
|
|
1655 if (u->length == 0
|
260
|
1656 || upstream->read->eof
|
|
1657 || upstream->read->error)
|
130
|
1658 {
|
|
1659 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1660 return;
|
|
1661 }
|
|
1662
|
|
1663 b->pos = b->start;
|
|
1664 b->last = b->start;
|
|
1665 }
|
|
1666 }
|
|
1667
|
|
1668 size = b->end - b->last;
|
|
1669
|
|
1670 if (size > u->length) {
|
|
1671 size = u->length;
|
|
1672 }
|
|
1673
|
260
|
1674 if (size && upstream->read->ready) {
|
|
1675
|
|
1676 n = upstream->recv(upstream, b->last, size);
|
130
|
1677
|
|
1678 if (n == NGX_AGAIN) {
|
|
1679 break;
|
|
1680 }
|
|
1681
|
|
1682 if (n > 0) {
|
|
1683 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1684 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1685 return;
|
|
1686 }
|
|
1687 }
|
|
1688
|
|
1689 do_write = 1;
|
|
1690
|
|
1691 continue;
|
|
1692 }
|
|
1693
|
|
1694 break;
|
|
1695 }
|
|
1696
|
260
|
1697 if (downstream->data == r) {
|
|
1698 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
132
|
1699 == NGX_ERROR)
|
|
1700 {
|
|
1701 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1702 return;
|
|
1703 }
|
130
|
1704 }
|
|
1705
|
276
|
1706 if (downstream->write->active && !downstream->write->ready) {
|
260
|
1707 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
1708
|
|
1709 } else if (downstream->write->timer_set) {
|
|
1710 ngx_del_timer(downstream->write);
|
130
|
1711 }
|
|
1712
|
260
|
1713 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
130
|
1714 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1715 return;
|
|
1716 }
|
|
1717
|
276
|
1718 if (upstream->read->active && !upstream->read->ready) {
|
260
|
1719 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
1720
|
|
1721 } else if (upstream->read->timer_set) {
|
|
1722 ngx_del_timer(upstream->read);
|
130
|
1723 }
|
|
1724 }
|
|
1725
|
|
1726
|
|
1727 static ngx_int_t
|
|
1728 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
1729 {
|
|
1730 return NGX_OK;
|
|
1731 }
|
|
1732
|
|
1733
|
|
1734 static ngx_int_t
|
|
1735 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
1736 {
|
|
1737 ngx_http_request_t *r = data;
|
|
1738
|
|
1739 ngx_buf_t *b;
|
|
1740 ngx_chain_t *cl, **ll;
|
|
1741 ngx_http_upstream_t *u;
|
|
1742
|
|
1743 u = r->upstream;
|
|
1744
|
|
1745 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
1746 ll = &cl->next;
|
|
1747 }
|
|
1748
|
|
1749 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
1750 if (cl == NULL) {
|
|
1751 return NGX_ERROR;
|
|
1752 }
|
|
1753
|
|
1754 *ll = cl;
|
|
1755
|
|
1756 cl->buf->flush = 1;
|
|
1757 cl->buf->memory = 1;
|
|
1758
|
|
1759 b = &u->buffer;
|
|
1760
|
|
1761 cl->buf->pos = b->last;
|
|
1762 b->last += bytes;
|
|
1763 cl->buf->last = b->last;
|
|
1764
|
|
1765 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
1766 return NGX_OK;
|
|
1767 }
|
|
1768
|
|
1769 u->length -= bytes;
|
|
1770
|
|
1771 return NGX_OK;
|
|
1772 }
|
|
1773
|
|
1774
|
|
1775 static void
|
58
|
1776 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
1777 {
|
|
1778 ngx_http_upstream_process_body(r->connection->write);
|
|
1779 }
|
|
1780
|
|
1781
|
|
1782 static void
|
36
|
1783 ngx_http_upstream_process_body(ngx_event_t *ev)
|
28
|
1784 {
|
58
|
1785 ngx_event_pipe_t *p;
|
132
|
1786 ngx_connection_t *c, *downstream;
|
28
|
1787 ngx_http_request_t *r;
|
|
1788 ngx_http_upstream_t *u;
|
|
1789
|
|
1790 c = ev->data;
|
|
1791 r = c->data;
|
|
1792 u = r->upstream;
|
132
|
1793 downstream = r->connection;
|
28
|
1794
|
|
1795 if (ev->write) {
|
32
|
1796 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1797 "http upstream process downstream");
|
|
1798 c->log->action = "sending to client";
|
126
|
1799
|
28
|
1800 } else {
|
32
|
1801 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1802 "http upstream process upstream");
|
|
1803 c->log->action = "reading upstream";
|
28
|
1804 }
|
126
|
1805
|
130
|
1806 p = u->pipe;
|
28
|
1807
|
|
1808 if (ev->timedout) {
|
|
1809 if (ev->write) {
|
76
|
1810 if (ev->delayed) {
|
|
1811
|
|
1812 ev->timedout = 0;
|
|
1813 ev->delayed = 0;
|
|
1814
|
|
1815 if (!ev->ready) {
|
|
1816 ngx_add_timer(ev, p->send_timeout);
|
|
1817
|
|
1818 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
1819 {
|
|
1820 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1821 return;
|
|
1822 }
|
|
1823
|
|
1824 return;
|
|
1825 }
|
|
1826
|
|
1827 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
132
|
1828
|
|
1829 if (downstream->destroyed) {
|
|
1830 return;
|
|
1831 }
|
|
1832
|
76
|
1833 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1834 return;
|
|
1835 }
|
|
1836
|
|
1837 } else {
|
|
1838 p->downstream_error = 1;
|
126
|
1839 c->timedout = 1;
|
160
|
1840 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
76
|
1841 }
|
28
|
1842
|
|
1843 } else {
|
126
|
1844 p->upstream_error = 1;
|
160
|
1845 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
28
|
1846 }
|
|
1847
|
|
1848 } else {
|
76
|
1849 if (ev->write && ev->delayed) {
|
|
1850 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1851 "http downstream delayed");
|
|
1852
|
|
1853 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
1854 return;
|
|
1855 }
|
|
1856
|
|
1857 return;
|
|
1858 }
|
|
1859
|
28
|
1860 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
132
|
1861
|
|
1862 if (downstream->destroyed) {
|
|
1863 return;
|
|
1864 }
|
|
1865
|
28
|
1866 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1867 return;
|
|
1868 }
|
|
1869 }
|
126
|
1870
|
28
|
1871 if (u->peer.connection) {
|
|
1872
|
|
1873 #if (NGX_HTTP_FILE_CACHE)
|
|
1874
|
|
1875 if (p->upstream_done && u->cachable) {
|
|
1876 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
1877 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1878 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1879 return;
|
|
1880 }
|
|
1881
|
|
1882 } else if (p->upstream_eof && u->cachable) {
|
|
1883
|
|
1884 /* TODO: check length & update cache */
|
|
1885
|
|
1886 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
1887 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1888 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1889 return;
|
|
1890 }
|
|
1891 }
|
|
1892
|
|
1893 #endif
|
|
1894
|
|
1895 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
32
|
1896 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1897 "http upstream exit: %p", p->out);
|
28
|
1898 #if 0
|
|
1899 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1900 #endif
|
|
1901 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1902 return;
|
|
1903 }
|
|
1904 }
|
|
1905
|
|
1906 if (p->downstream_error) {
|
32
|
1907 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1908 "http upstream downstream error");
|
28
|
1909
|
|
1910 if (!u->cachable && u->peer.connection) {
|
|
1911 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1912 }
|
|
1913 }
|
|
1914 }
|
|
1915
|
|
1916
|
36
|
1917 static void
|
|
1918 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
28
|
1919 {
|
|
1920 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
1921 "http upstream dummy handler");
|
|
1922 }
|
|
1923
|
|
1924
|
36
|
1925 static void
|
|
1926 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
1927 ngx_uint_t ft_type)
|
28
|
1928 {
|
260
|
1929 ngx_uint_t status, state;
|
28
|
1930
|
|
1931 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
260
|
1932 "http next upstream, %xi", ft_type);
|
28
|
1933
|
|
1934 #if 0
|
|
1935 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1936 #endif
|
|
1937
|
74
|
1938 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
260
|
1939 state = NGX_PEER_NEXT;
|
74
|
1940 } else {
|
260
|
1941 state = NGX_PEER_FAILED;
|
28
|
1942 }
|
74
|
1943
|
260
|
1944 u->peer.free(&u->peer, u->peer.data, state);
|
74
|
1945
|
28
|
1946 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
1947 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
1948 "upstream timed out");
|
|
1949 }
|
126
|
1950
|
28
|
1951 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
1952 status = 0;
|
|
1953
|
|
1954 } else {
|
|
1955 switch(ft_type) {
|
|
1956
|
|
1957 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
1958 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
1959 break;
|
|
1960
|
|
1961 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
1962 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
1963 break;
|
|
1964
|
|
1965 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
1966 status = NGX_HTTP_NOT_FOUND;
|
|
1967 break;
|
|
1968
|
|
1969 /*
|
|
1970 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
1971 * never reach here
|
|
1972 */
|
|
1973
|
|
1974 default:
|
|
1975 status = NGX_HTTP_BAD_GATEWAY;
|
|
1976 }
|
|
1977 }
|
|
1978
|
132
|
1979 if (r->connection->error) {
|
28
|
1980 ngx_http_upstream_finalize_request(r, u,
|
|
1981 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1982 return;
|
|
1983 }
|
|
1984
|
|
1985 if (status) {
|
|
1986 u->state->status = status;
|
|
1987
|
74
|
1988 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
28
|
1989
|
|
1990 #if (NGX_HTTP_CACHE)
|
|
1991
|
|
1992 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
1993 ngx_http_upstream_finalize_request(r, u,
|
74
|
1994 ngx_http_send_cached_response(r));
|
28
|
1995 return;
|
|
1996 }
|
|
1997
|
|
1998 #endif
|
|
1999
|
|
2000 ngx_http_upstream_finalize_request(r, u, status);
|
|
2001 return;
|
|
2002 }
|
|
2003 }
|
|
2004
|
|
2005 if (u->peer.connection) {
|
|
2006 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2007 "close http upstream connection: %d",
|
|
2008 u->peer.connection->fd);
|
126
|
2009 #if (NGX_HTTP_SSL)
|
260
|
2010
|
126
|
2011 if (u->peer.connection->ssl) {
|
260
|
2012 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2013 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
2014
|
|
2015 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2016 }
|
|
2017 #endif
|
260
|
2018
|
28
|
2019 ngx_close_connection(u->peer.connection);
|
|
2020 }
|
|
2021
|
|
2022 #if 0
|
|
2023 if (u->conf->busy_lock && !u->busy_locked) {
|
|
2024 ngx_http_upstream_busy_lock(p);
|
|
2025 return;
|
|
2026 }
|
|
2027 #endif
|
|
2028
|
|
2029 ngx_http_upstream_connect(r, u);
|
|
2030 }
|
|
2031
|
|
2032
|
36
|
2033 static void
|
118
|
2034 ngx_http_upstream_cleanup(void *data)
|
|
2035 {
|
|
2036 ngx_http_request_t *r = data;
|
|
2037
|
|
2038 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2039 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
2040
|
|
2041 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
2042 }
|
|
2043
|
|
2044
|
|
2045 static void
|
36
|
2046 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
2047 ngx_http_upstream_t *u, ngx_int_t rc)
|
28
|
2048 {
|
262
|
2049 ngx_time_t *tp;
|
112
|
2050
|
32
|
2051 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2052 "finalize http upstream request: %i", rc);
|
28
|
2053
|
118
|
2054 *u->cleanup = NULL;
|
|
2055
|
262
|
2056 if (u->state->response_sec) {
|
112
|
2057 tp = ngx_timeofday();
|
262
|
2058 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
2059 u->state->response_msec = tp->msec - u->state->response_msec;
|
112
|
2060 }
|
|
2061
|
28
|
2062 u->finalize_request(r, rc);
|
|
2063
|
260
|
2064 u->peer.free(&u->peer, u->peer.data, 0);
|
|
2065
|
28
|
2066 if (u->peer.connection) {
|
260
|
2067
|
126
|
2068 #if (NGX_HTTP_SSL)
|
|
2069
|
|
2070 /* TODO: do not shutdown persistent connection */
|
|
2071
|
|
2072 if (u->peer.connection->ssl) {
|
260
|
2073
|
|
2074 /*
|
|
2075 * We send the "close notify" shutdown alert to the upstream only
|
|
2076 * and do not wait its "close notify" shutdown alert.
|
|
2077 * It is acceptable according to the TLS standard.
|
|
2078 */
|
|
2079
|
|
2080 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2081
|
|
2082 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2083 }
|
|
2084 #endif
|
260
|
2085
|
|
2086 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2087 "close http upstream connection: %d",
|
|
2088 u->peer.connection->fd);
|
|
2089
|
28
|
2090 ngx_close_connection(u->peer.connection);
|
|
2091 }
|
|
2092
|
32
|
2093 u->peer.connection = NULL;
|
|
2094
|
112
|
2095 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
28
|
2096 {
|
|
2097 rc = 0;
|
|
2098 }
|
|
2099
|
130
|
2100 if (u->pipe && u->pipe->temp_file) {
|
28
|
2101 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2102 "http upstream temp fd: %d",
|
130
|
2103 u->pipe->temp_file->file.fd);
|
28
|
2104 }
|
|
2105
|
|
2106 #if 0
|
|
2107 if (u->cache) {
|
|
2108 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2109 "http upstream cache fd: %d",
|
28
|
2110 u->cache->ctx.file.fd);
|
|
2111 }
|
|
2112 #endif
|
|
2113
|
64
|
2114 if (rc == NGX_DECLINED) {
|
|
2115 return;
|
|
2116 }
|
|
2117
|
32
|
2118 r->connection->log->action = "sending to client";
|
|
2119
|
178
|
2120 if (rc == 0 && r == r->main && !r->post_action) {
|
130
|
2121 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
28
|
2122 }
|
|
2123
|
|
2124 ngx_http_finalize_request(r, rc);
|
|
2125 }
|
|
2126
|
|
2127
|
58
|
2128 static ngx_int_t
|
|
2129 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2130 ngx_uint_t offset)
|
126
|
2131 {
|
58
|
2132 ngx_table_elt_t **ph;
|
126
|
2133
|
58
|
2134 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
2135
|
|
2136 if (*ph == NULL) {
|
|
2137 *ph = h;
|
|
2138 }
|
|
2139
|
|
2140 return NGX_OK;
|
|
2141 }
|
|
2142
|
|
2143
|
|
2144 static ngx_int_t
|
|
2145 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
2146 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2147 {
|
|
2148 ngx_array_t *pa;
|
|
2149 ngx_table_elt_t **ph;
|
|
2150
|
|
2151 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
2152
|
|
2153 if (pa->elts == NULL) {
|
|
2154 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2155 {
|
|
2156 return NGX_ERROR;
|
|
2157 }
|
|
2158 }
|
|
2159
|
|
2160 ph = ngx_array_push(pa);
|
|
2161 if (ph == NULL) {
|
|
2162 return NGX_ERROR;
|
|
2163 }
|
|
2164
|
|
2165 *ph = h;
|
|
2166
|
|
2167 return NGX_OK;
|
|
2168 }
|
|
2169
|
|
2170
|
|
2171 static ngx_int_t
|
|
2172 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2173 ngx_uint_t offset)
|
|
2174 {
|
|
2175 return NGX_OK;
|
|
2176 }
|
|
2177
|
|
2178
|
|
2179 static ngx_int_t
|
76
|
2180 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2181 ngx_uint_t offset)
|
126
|
2182 {
|
76
|
2183 ngx_int_t n;
|
|
2184
|
|
2185 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
2186
|
|
2187 n = ngx_atoi(h->value.data, h->value.len);
|
|
2188
|
|
2189 if (n != NGX_ERROR) {
|
|
2190 r->limit_rate = (size_t) n;
|
|
2191 }
|
|
2192
|
|
2193 return NGX_OK;
|
|
2194 }
|
|
2195
|
|
2196
|
|
2197 static ngx_int_t
|
198
|
2198 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2199 ngx_uint_t offset)
|
|
2200 {
|
|
2201 u_char c0, c1, c2;
|
|
2202
|
|
2203 if (r->upstream->conf->change_buffering) {
|
|
2204
|
|
2205 if (h->value.len == 2) {
|
|
2206 c0 = ngx_tolower(h->value.data[0]);
|
|
2207 c1 = ngx_tolower(h->value.data[1]);
|
|
2208
|
|
2209 if (c0 == 'n' && c1 == 'o') {
|
|
2210 r->upstream->buffering = 0;
|
|
2211 }
|
|
2212
|
|
2213 } else if (h->value.len == 3) {
|
|
2214 c0 = ngx_tolower(h->value.data[0]);
|
|
2215 c1 = ngx_tolower(h->value.data[1]);
|
|
2216 c2 = ngx_tolower(h->value.data[2]);
|
|
2217
|
|
2218 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
2219 r->upstream->buffering = 1;
|
|
2220 }
|
|
2221 }
|
|
2222 }
|
|
2223
|
|
2224 return NGX_OK;
|
|
2225 }
|
|
2226
|
|
2227
|
|
2228 static ngx_int_t
|
206
|
2229 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2230 ngx_uint_t offset)
|
|
2231 {
|
|
2232 r->headers_out.override_charset = &h->value;
|
|
2233
|
|
2234 return NGX_OK;
|
|
2235 }
|
|
2236
|
|
2237
|
|
2238 static ngx_int_t
|
58
|
2239 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2240 ngx_uint_t offset)
|
|
2241 {
|
122
|
2242 ngx_table_elt_t *ho, **ph;
|
58
|
2243
|
|
2244 ho = ngx_list_push(&r->headers_out.headers);
|
|
2245 if (ho == NULL) {
|
|
2246 return NGX_ERROR;
|
|
2247 }
|
|
2248
|
|
2249 *ho = *h;
|
|
2250
|
122
|
2251 if (offset) {
|
|
2252 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
2253 *ph = ho;
|
|
2254 }
|
|
2255
|
58
|
2256 return NGX_OK;
|
|
2257 }
|
|
2258
|
|
2259
|
|
2260 static ngx_int_t
|
|
2261 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
2262 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2263 {
|
|
2264 ngx_array_t *pa;
|
|
2265 ngx_table_elt_t *ho, **ph;
|
|
2266
|
|
2267 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
2268
|
|
2269 if (pa->elts == NULL) {
|
|
2270 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2271 {
|
|
2272 return NGX_ERROR;
|
|
2273 }
|
|
2274 }
|
|
2275
|
|
2276 ph = ngx_array_push(pa);
|
|
2277 if (ph == NULL) {
|
|
2278 return NGX_ERROR;
|
|
2279 }
|
|
2280
|
|
2281 ho = ngx_list_push(&r->headers_out.headers);
|
|
2282 if (ho == NULL) {
|
|
2283 return NGX_ERROR;
|
|
2284 }
|
|
2285
|
|
2286 *ho = *h;
|
|
2287 *ph = ho;
|
|
2288
|
|
2289 return NGX_OK;
|
|
2290 }
|
|
2291
|
|
2292
|
|
2293 static ngx_int_t
|
|
2294 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2295 ngx_uint_t offset)
|
|
2296 {
|
206
|
2297 u_char *p, *last;
|
|
2298
|
|
2299 r->headers_out.content_type_len = h->value.len;
|
58
|
2300 r->headers_out.content_type = h->value;
|
|
2301
|
206
|
2302 for (p = h->value.data; *p; p++) {
|
|
2303
|
|
2304 if (*p != ';') {
|
|
2305 continue;
|
|
2306 }
|
|
2307
|
|
2308 last = p;
|
|
2309
|
|
2310 while (*++p == ' ') { /* void */ }
|
|
2311
|
|
2312 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
2313 continue;
|
|
2314 }
|
|
2315
|
|
2316 p += 8;
|
|
2317
|
|
2318 r->headers_out.content_type_len = last - h->value.data;
|
|
2319
|
|
2320 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
2321 r->headers_out.charset.data = p;
|
|
2322 }
|
|
2323
|
58
|
2324 return NGX_OK;
|
|
2325 }
|
|
2326
|
|
2327
|
|
2328 static ngx_int_t
|
|
2329 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2330 ngx_uint_t offset)
|
|
2331 {
|
|
2332 ngx_table_elt_t *ho;
|
|
2333
|
|
2334 ho = ngx_list_push(&r->headers_out.headers);
|
|
2335 if (ho == NULL) {
|
|
2336 return NGX_ERROR;
|
|
2337 }
|
|
2338
|
|
2339 *ho = *h;
|
|
2340
|
|
2341 r->headers_out.content_length = ho;
|
|
2342 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
2343
|
|
2344 return NGX_OK;
|
|
2345 }
|
|
2346
|
|
2347
|
|
2348 static ngx_int_t
|
|
2349 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2350 ngx_uint_t offset)
|
|
2351 {
|
|
2352 ngx_int_t rc;
|
|
2353 ngx_table_elt_t *ho;
|
|
2354
|
|
2355 ho = ngx_list_push(&r->headers_out.headers);
|
|
2356 if (ho == NULL) {
|
|
2357 return NGX_ERROR;
|
|
2358 }
|
|
2359
|
|
2360 *ho = *h;
|
|
2361
|
|
2362 if (r->upstream->rewrite_redirect) {
|
|
2363 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
2364
|
78
|
2365 if (rc == NGX_DECLINED) {
|
|
2366 return NGX_OK;
|
|
2367 }
|
|
2368
|
58
|
2369 if (rc == NGX_OK) {
|
|
2370 r->headers_out.location = ho;
|
|
2371
|
|
2372 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2373 "rewritten location: \"%V\"", &ho->value);
|
|
2374 }
|
|
2375
|
|
2376 return rc;
|
|
2377 }
|
|
2378
|
|
2379 /*
|
|
2380 * we do not set r->headers_out.location here to avoid the handling
|
|
2381 * the local redirects without a host name by ngx_http_header_filter()
|
|
2382 */
|
|
2383
|
|
2384 return NGX_OK;
|
|
2385 }
|
|
2386
|
|
2387
|
|
2388 static ngx_int_t
|
|
2389 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2390 ngx_uint_t offset)
|
|
2391 {
|
|
2392 u_char *p;
|
|
2393 ngx_int_t rc;
|
|
2394 ngx_table_elt_t *ho;
|
|
2395
|
|
2396 ho = ngx_list_push(&r->headers_out.headers);
|
|
2397 if (ho == NULL) {
|
|
2398 return NGX_ERROR;
|
|
2399 }
|
|
2400
|
|
2401 *ho = *h;
|
|
2402
|
|
2403 if (r->upstream->rewrite_redirect) {
|
|
2404
|
|
2405 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
2406
|
|
2407 if (p) {
|
|
2408 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
2409
|
|
2410 } else {
|
|
2411 return NGX_OK;
|
|
2412 }
|
|
2413
|
78
|
2414 if (rc == NGX_DECLINED) {
|
|
2415 return NGX_OK;
|
|
2416 }
|
|
2417
|
58
|
2418 #if (NGX_DEBUG)
|
|
2419 if (rc == NGX_OK) {
|
|
2420 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2421 "rewritten refresh: \"%V\"", &ho->value);
|
|
2422 }
|
|
2423 #endif
|
|
2424
|
|
2425 return rc;
|
|
2426 }
|
|
2427
|
|
2428 return NGX_OK;
|
|
2429 }
|
|
2430
|
|
2431
|
|
2432 #if (NGX_HTTP_GZIP)
|
|
2433
|
|
2434 static ngx_int_t
|
|
2435 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
2436 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2437 {
|
|
2438 ngx_table_elt_t *ho;
|
|
2439
|
|
2440 ho = ngx_list_push(&r->headers_out.headers);
|
|
2441 if (ho == NULL) {
|
|
2442 return NGX_ERROR;
|
|
2443 }
|
|
2444
|
|
2445 *ho = *h;
|
|
2446
|
|
2447 r->headers_out.content_encoding = ho;
|
|
2448
|
|
2449 return NGX_OK;
|
|
2450 }
|
|
2451
|
|
2452 #endif
|
|
2453
|
|
2454
|
36
|
2455 static ngx_int_t
|
122
|
2456 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
28
|
2457 {
|
260
|
2458 ngx_http_variable_t *var, *v;
|
28
|
2459
|
122
|
2460 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
2461 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
2462 if (var == NULL) {
|
|
2463 return NGX_ERROR;
|
|
2464 }
|
|
2465
|
186
|
2466 var->get_handler = v->get_handler;
|
122
|
2467 var->data = v->data;
|
|
2468 }
|
|
2469
|
28
|
2470 return NGX_OK;
|
|
2471 }
|
58
|
2472
|
|
2473
|
122
|
2474 static ngx_int_t
|
|
2475 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
2476 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2477 {
|
|
2478 u_char *p;
|
|
2479 size_t len;
|
|
2480 ngx_uint_t i;
|
|
2481 ngx_http_upstream_t *u;
|
|
2482 ngx_http_upstream_state_t *state;
|
|
2483
|
|
2484 v->valid = 1;
|
|
2485 v->no_cachable = 0;
|
|
2486 v->not_found = 0;
|
|
2487
|
|
2488 u = r->upstream;
|
|
2489
|
|
2490 if (u == NULL || u->states.nelts == 0) {
|
|
2491 v->not_found = 1;
|
|
2492 return NGX_OK;
|
|
2493 }
|
|
2494
|
|
2495 len = u->states.nelts * (3 + 2);
|
|
2496
|
|
2497 p = ngx_palloc(r->pool, len);
|
|
2498 if (p == NULL) {
|
|
2499 return NGX_ERROR;
|
|
2500 }
|
|
2501
|
|
2502 v->data = p;
|
|
2503
|
|
2504 i = 0;
|
|
2505 state = u->states.elts;
|
|
2506
|
|
2507 for ( ;; ) {
|
|
2508 if (state[i].status == 0) {
|
|
2509 *p++ = '-';
|
|
2510
|
|
2511 } else {
|
|
2512 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
2513 }
|
|
2514
|
|
2515 if (++i == u->states.nelts) {
|
|
2516 break;
|
|
2517 }
|
|
2518
|
|
2519 *p++ = ',';
|
|
2520 *p++ = ' ';
|
|
2521 }
|
|
2522
|
|
2523 v->len = p - v->data;
|
|
2524
|
|
2525 return NGX_OK;
|
|
2526 }
|
|
2527
|
|
2528
|
|
2529 static ngx_int_t
|
|
2530 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
2531 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2532 {
|
|
2533 u_char *p;
|
|
2534 size_t len;
|
|
2535 ngx_uint_t i;
|
262
|
2536 ngx_msec_int_t ms;
|
122
|
2537 ngx_http_upstream_t *u;
|
|
2538 ngx_http_upstream_state_t *state;
|
|
2539
|
|
2540 v->valid = 1;
|
|
2541 v->no_cachable = 0;
|
|
2542 v->not_found = 0;
|
|
2543
|
|
2544 u = r->upstream;
|
|
2545
|
|
2546 if (u == NULL || u->states.nelts == 0) {
|
|
2547 v->not_found = 1;
|
|
2548 return NGX_OK;
|
|
2549 }
|
|
2550
|
|
2551 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
2552
|
|
2553 p = ngx_palloc(r->pool, len);
|
|
2554 if (p == NULL) {
|
|
2555 return NGX_ERROR;
|
|
2556 }
|
|
2557
|
|
2558 v->data = p;
|
|
2559
|
|
2560 i = 0;
|
|
2561 state = u->states.elts;
|
|
2562
|
|
2563 for ( ;; ) {
|
|
2564 if (state[i].status == 0) {
|
|
2565 *p++ = '-';
|
|
2566
|
|
2567 } else {
|
262
|
2568 ms = state[i].response_sec * 1000 + state[i].response_msec;
|
|
2569 ms = (ms >= 0) ? ms : 0;
|
|
2570 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
122
|
2571 }
|
|
2572
|
|
2573 if (++i == u->states.nelts) {
|
|
2574 break;
|
|
2575 }
|
|
2576
|
|
2577 *p++ = ',';
|
|
2578 *p++ = ' ';
|
|
2579 }
|
|
2580
|
|
2581 v->len = p - v->data;
|
|
2582
|
|
2583 return NGX_OK;
|
|
2584 }
|
|
2585
|
|
2586
|
200
|
2587 static char *
|
|
2588 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
2589 {
|
260
|
2590 char *rv;
|
|
2591 void *mconf;
|
|
2592 ngx_str_t *value;
|
|
2593 ngx_url_t u;
|
|
2594 ngx_uint_t m;
|
|
2595 ngx_conf_t pcf;
|
|
2596 ngx_http_module_t *module;
|
|
2597 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
2598 ngx_http_upstream_srv_conf_t *uscf;
|
|
2599
|
|
2600 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
2601
|
|
2602 value = cf->args->elts;
|
|
2603 u.host = value[1];
|
|
2604 u.no_resolve = 1;
|
|
2605
|
|
2606 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
2607 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
2608 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
2609 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
2610 |NGX_HTTP_UPSTREAM_DOWN
|
|
2611 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
2612 if (uscf == NULL) {
|
|
2613 return NGX_CONF_ERROR;
|
|
2614 }
|
|
2615
|
200
|
2616
|
|
2617 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
2618 if (ctx == NULL) {
|
|
2619 return NGX_CONF_ERROR;
|
|
2620 }
|
|
2621
|
260
|
2622 http_ctx = cf->ctx;
|
|
2623 ctx->main_conf = http_ctx->main_conf;
|
200
|
2624
|
|
2625 /* the upstream{}'s srv_conf */
|
|
2626
|
|
2627 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
2628 if (ctx->srv_conf == NULL) {
|
|
2629 return NGX_CONF_ERROR;
|
|
2630 }
|
|
2631
|
|
2632 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
2633
|
260
|
2634 uscf->srv_conf = ctx->srv_conf;
|
|
2635
|
200
|
2636
|
|
2637 /* the upstream{}'s loc_conf */
|
|
2638
|
|
2639 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
2640 if (ctx->loc_conf == NULL) {
|
|
2641 return NGX_CONF_ERROR;
|
|
2642 }
|
|
2643
|
|
2644 for (m = 0; ngx_modules[m]; m++) {
|
|
2645 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
2646 continue;
|
|
2647 }
|
|
2648
|
|
2649 module = ngx_modules[m]->ctx;
|
|
2650
|
260
|
2651 if (module->create_srv_conf) {
|
|
2652 mconf = module->create_srv_conf(cf);
|
|
2653 if (mconf == NULL) {
|
|
2654 return NGX_CONF_ERROR;
|
|
2655 }
|
|
2656
|
|
2657 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
2658 }
|
|
2659
|
200
|
2660 if (module->create_loc_conf) {
|
|
2661 mconf = module->create_loc_conf(cf);
|
|
2662 if (mconf == NULL) {
|
|
2663 return NGX_CONF_ERROR;
|
|
2664 }
|
|
2665
|
|
2666 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
2667 }
|
|
2668 }
|
|
2669
|
|
2670
|
|
2671 /* parse inside upstream{} */
|
|
2672
|
|
2673 pcf = *cf;
|
|
2674 cf->ctx = ctx;
|
|
2675 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
2676
|
|
2677 rv = ngx_conf_parse(cf, NULL);
|
|
2678
|
|
2679 *cf = pcf;
|
|
2680
|
|
2681 if (rv != NGX_CONF_OK) {
|
|
2682 return rv;
|
|
2683 }
|
|
2684
|
|
2685 if (uscf->servers == NULL) {
|
|
2686 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
2687 "no servers are inside upstream");
|
|
2688 return NGX_CONF_ERROR;
|
|
2689 }
|
|
2690
|
|
2691 return rv;
|
|
2692 }
|
|
2693
|
|
2694
|
|
2695 static char *
|
|
2696 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
2697 {
|
|
2698 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
2699
|
260
|
2700 time_t fail_timeout;
|
|
2701 ngx_str_t *value, s;
|
|
2702 ngx_url_t u;
|
|
2703 ngx_int_t weight, max_fails;
|
|
2704 ngx_uint_t i;
|
|
2705 ngx_http_upstream_server_t *us;
|
200
|
2706
|
|
2707 if (uscf->servers == NULL) {
|
260
|
2708 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
2709 sizeof(ngx_http_upstream_server_t));
|
200
|
2710 if (uscf->servers == NULL) {
|
|
2711 return NGX_CONF_ERROR;
|
|
2712 }
|
|
2713 }
|
|
2714
|
260
|
2715 us = ngx_array_push(uscf->servers);
|
|
2716 if (us == NULL) {
|
200
|
2717 return NGX_CONF_ERROR;
|
|
2718 }
|
|
2719
|
260
|
2720 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
2721
|
200
|
2722 value = cf->args->elts;
|
|
2723
|
|
2724 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
2725
|
|
2726 u.url = value[1];
|
266
|
2727 u.default_port = 80;
|
200
|
2728
|
|
2729 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
2730 if (u.err) {
|
|
2731 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
2732 "%s in upstream \"%V\"", u.err, &u.url);
|
|
2733 }
|
|
2734
|
|
2735 return NGX_CONF_ERROR;
|
|
2736 }
|
|
2737
|
212
|
2738 weight = 1;
|
260
|
2739 max_fails = 1;
|
|
2740 fail_timeout = 10;
|
|
2741
|
|
2742 for (i = 2; i < cf->args->nelts; i++) {
|
|
2743
|
|
2744 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
2745
|
|
2746 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
2747 goto invalid;
|
|
2748 }
|
|
2749
|
|
2750 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
212
|
2751
|
|
2752 if (weight == NGX_ERROR || weight == 0) {
|
|
2753 goto invalid;
|
|
2754 }
|
|
2755
|
260
|
2756 continue;
|
|
2757 }
|
|
2758
|
|
2759 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
2760
|
|
2761 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
2762 goto invalid;
|
|
2763 }
|
|
2764
|
|
2765 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
2766
|
|
2767 if (max_fails == NGX_ERROR) {
|
|
2768 goto invalid;
|
|
2769 }
|
|
2770
|
|
2771 continue;
|
212
|
2772 }
|
260
|
2773
|
|
2774 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
2775
|
|
2776 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
2777 goto invalid;
|
|
2778 }
|
|
2779
|
|
2780 s.len = value[i].len - 13;
|
|
2781 s.data = &value[i].data[13];
|
|
2782
|
|
2783 fail_timeout = ngx_parse_time(&s, 1);
|
|
2784
|
|
2785 if (fail_timeout < 0) {
|
|
2786 goto invalid;
|
|
2787 }
|
|
2788
|
|
2789 continue;
|
|
2790 }
|
|
2791
|
|
2792 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
2793
|
|
2794 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
2795 goto invalid;
|
|
2796 }
|
|
2797
|
|
2798 us->down = 1;
|
|
2799
|
|
2800 continue;
|
|
2801 }
|
|
2802
|
|
2803 goto invalid;
|
212
|
2804 }
|
|
2805
|
260
|
2806 us->addrs = u.addrs;
|
|
2807 us->naddrs = u.naddrs;
|
|
2808 us->weight = weight;
|
|
2809 us->max_fails = max_fails;
|
|
2810 us->fail_timeout = fail_timeout;
|
200
|
2811
|
|
2812 return NGX_CONF_OK;
|
212
|
2813
|
|
2814 invalid:
|
|
2815
|
260
|
2816 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
2817 "invalid parameter \"%V\"", &value[i]);
|
212
|
2818
|
|
2819 return NGX_CONF_ERROR;
|
200
|
2820 }
|
|
2821
|
|
2822
|
|
2823 ngx_http_upstream_srv_conf_t *
|
260
|
2824 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
200
|
2825 {
|
|
2826 ngx_uint_t i;
|
260
|
2827 ngx_http_upstream_server_t *us;
|
200
|
2828 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
2829 ngx_http_upstream_main_conf_t *umcf;
|
|
2830
|
260
|
2831 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
2832
|
200
|
2833 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
2834 if (u->err) {
|
|
2835 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
2836 "%s in upstream \"%V\"", u->err, &u->url);
|
|
2837 }
|
|
2838
|
|
2839 return NULL;
|
|
2840 }
|
|
2841 }
|
|
2842
|
|
2843 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
2844
|
|
2845 uscfp = umcf->upstreams.elts;
|
|
2846
|
|
2847 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
266
|
2848
|
|
2849 if (uscfp[i]->host.len != u->host.len
|
260
|
2850 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
2851 != 0)
|
|
2852 {
|
200
|
2853 continue;
|
|
2854 }
|
|
2855
|
260
|
2856 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
2857 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
200
|
2858 {
|
260
|
2859 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
2860 "duplicate upstream \"%V\"", &u->host);
|
|
2861 return NULL;
|
200
|
2862 }
|
260
|
2863
|
266
|
2864 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
260
|
2865 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
266
|
2866 "upstream \"%V\" may not have port %d",
|
|
2867 &u->host, u->port);
|
|
2868 return NULL;
|
|
2869 }
|
|
2870
|
|
2871 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
2872 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
2873 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
2874 &u->host, uscfp[i]->port,
|
|
2875 uscfp[i]->file_name.data, uscfp[i]->line);
|
|
2876 return NULL;
|
|
2877 }
|
|
2878
|
|
2879 if (uscfp[i]->port != u->port) {
|
|
2880 continue;
|
260
|
2881 }
|
|
2882
|
|
2883 return uscfp[i];
|
200
|
2884 }
|
|
2885
|
|
2886 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
2887 if (uscf == NULL) {
|
|
2888 return NULL;
|
|
2889 }
|
|
2890
|
260
|
2891 uscf->flags = flags;
|
200
|
2892 uscf->host = u->host;
|
|
2893 uscf->file_name = cf->conf_file->file.name;
|
|
2894 uscf->line = cf->conf_file->line;
|
266
|
2895 uscf->port = u->port;
|
|
2896 uscf->default_port = u->default_port;
|
260
|
2897
|
|
2898 if (u->naddrs == 1) {
|
|
2899 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
2900 sizeof(ngx_http_upstream_server_t));
|
|
2901 if (uscf->servers == NULL) {
|
|
2902 return NGX_CONF_ERROR;
|
|
2903 }
|
|
2904
|
|
2905 us = ngx_array_push(uscf->servers);
|
|
2906 if (us == NULL) {
|
|
2907 return NGX_CONF_ERROR;
|
|
2908 }
|
|
2909
|
|
2910 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
2911
|
|
2912 us->addrs = u->addrs;
|
|
2913 us->naddrs = u->naddrs;
|
|
2914 }
|
200
|
2915
|
|
2916 uscfp = ngx_array_push(&umcf->upstreams);
|
|
2917 if (uscfp == NULL) {
|
|
2918 return NULL;
|
|
2919 }
|
|
2920
|
|
2921 *uscfp = uscf;
|
|
2922
|
|
2923 return uscf;
|
|
2924 }
|
|
2925
|
|
2926
|
58
|
2927 static void *
|
|
2928 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
2929 {
|
|
2930 ngx_http_upstream_main_conf_t *umcf;
|
|
2931
|
|
2932 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
2933 if (umcf == NULL) {
|
|
2934 return NULL;
|
|
2935 }
|
|
2936
|
200
|
2937 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
2938 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
2939 != NGX_OK)
|
|
2940 {
|
|
2941 return NGX_CONF_ERROR;
|
|
2942 }
|
|
2943
|
58
|
2944 return umcf;
|
|
2945 }
|
|
2946
|
|
2947
|
|
2948 static char *
|
200
|
2949 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
58
|
2950 {
|
|
2951 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
2952
|
200
|
2953 ngx_uint_t i;
|
|
2954 ngx_array_t headers_in;
|
|
2955 ngx_hash_key_t *hk;
|
|
2956 ngx_hash_init_t hash;
|
260
|
2957 ngx_http_upstream_init_pt init;
|
200
|
2958 ngx_http_upstream_header_t *header;
|
|
2959 ngx_http_upstream_srv_conf_t **uscfp;
|
|
2960
|
|
2961 uscfp = umcf->upstreams.elts;
|
|
2962
|
|
2963 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
260
|
2964
|
|
2965 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
2966 ngx_http_upstream_init_round_robin;
|
|
2967
|
|
2968 if (init(cf, uscfp[i]) != NGX_OK) {
|
200
|
2969 return NGX_CONF_ERROR;
|
|
2970 }
|
|
2971 }
|
198
|
2972
|
212
|
2973
|
260
|
2974 /* upstream_headers_in_hash */
|
|
2975
|
198
|
2976 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
2977 != NGX_OK)
|
58
|
2978 {
|
|
2979 return NGX_CONF_ERROR;
|
|
2980 }
|
|
2981
|
198
|
2982 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
2983 hk = ngx_array_push(&headers_in);
|
|
2984 if (hk == NULL) {
|
|
2985 return NGX_CONF_ERROR;
|
|
2986 }
|
|
2987
|
|
2988 hk->key = header->name;
|
|
2989 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
2990 hk->value = header;
|
|
2991 }
|
|
2992
|
|
2993 hash.hash = &umcf->headers_in_hash;
|
|
2994 hash.key = ngx_hash_key_lc;
|
|
2995 hash.max_size = 512;
|
244
|
2996 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
198
|
2997 hash.name = "upstream_headers_in_hash";
|
|
2998 hash.pool = cf->pool;
|
|
2999 hash.temp_pool = NULL;
|
|
3000
|
|
3001 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
3002 return NGX_CONF_ERROR;
|
|
3003 }
|
58
|
3004
|
|
3005 return NGX_CONF_OK;
|
|
3006 }
|