479
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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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509
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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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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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17 ngx_http_upstream_t *u);
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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19 ngx_http_upstream_t *u);
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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21 ngx_http_upstream_t *u);
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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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24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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25 ngx_http_upstream_t *u);
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26 static void
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27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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31 ssize_t bytes);
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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35 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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37 static void ngx_http_upstream_cleanup(void *data);
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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40
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41 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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43 static ngx_int_t
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44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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45 ngx_table_elt_t *h, ngx_uint_t offset);
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46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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509
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50 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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52 static ngx_int_t
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53 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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55 static ngx_int_t
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56 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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57 ngx_table_elt_t *h, ngx_uint_t offset);
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58 static ngx_int_t ngx_http_upstream_copy_content_type(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_length(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_rewrite_location(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_refresh(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 #if (NGX_HTTP_GZIP)
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67 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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68 ngx_table_elt_t *h, ngx_uint_t offset);
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69 #endif
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70
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71 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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72 uintptr_t data);
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73 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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74 u_char *buf, ngx_http_log_op_t *op);
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573
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75 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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76 uintptr_t data);
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563
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77 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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78 u_char *buf, ngx_http_log_op_t *op);
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79
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80 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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81 size_t len);
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82
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83 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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84 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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85 ngx_http_variable_value_t *v, uintptr_t data);
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86 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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87 ngx_http_variable_value_t *v, uintptr_t data);
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88
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89 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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90 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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91
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92 #if (NGX_HTTP_SSL)
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93 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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94 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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95 ngx_peer_t *peer);
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96 #endif
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97
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509
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98
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99 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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100
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101 { ngx_string("Status"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, status),
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104 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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105
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106 { ngx_string("Content-Type"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_type),
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109 ngx_http_upstream_copy_content_type, 0, 0 },
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110
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111 { ngx_string("Content-Length"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, content_length),
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114 ngx_http_upstream_copy_content_length, 0, 0 },
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115
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116 { ngx_string("Date"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, date),
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119 ngx_http_upstream_conditional_copy_header_line,
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120 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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121
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122 { ngx_string("Server"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, server),
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125 ngx_http_upstream_conditional_copy_header_line,
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126 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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127
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529
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128 { ngx_string("WWW-Authenticate"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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131 ngx_http_upstream_copy_header_line, 0, 0 },
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132
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133 { ngx_string("Location"),
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134 ngx_http_upstream_ignore_header_line, 0,
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135 ngx_http_upstream_rewrite_location, 0, 0 },
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136
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137 { ngx_string("Refresh"),
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138 ngx_http_upstream_ignore_header_line, 0,
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139 ngx_http_upstream_rewrite_refresh, 0, 0 },
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140
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141 { ngx_string("Set-Cookie"),
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142 ngx_http_upstream_ignore_header_line, 0,
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143 ngx_http_upstream_copy_header_line, 0, 1 },
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144
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145 { ngx_string("Content-Disposition"),
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146 ngx_http_upstream_ignore_header_line, 0,
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147 ngx_http_upstream_copy_header_line, 0, 1 },
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148
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149 { ngx_string("Cache-Control"),
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150 ngx_http_upstream_process_multi_header_lines,
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151 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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152 ngx_http_upstream_copy_multi_header_lines,
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153 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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154
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155 { ngx_string("Expires"),
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156 ngx_http_upstream_process_header_line,
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157 offsetof(ngx_http_upstream_headers_in_t, expires),
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158 ngx_http_upstream_copy_header_line,
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159 offsetof(ngx_http_headers_out_t, expires), 1 },
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160
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161 { ngx_string("Accept-Ranges"),
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162 ngx_http_upstream_process_header_line,
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163 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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164 ngx_http_upstream_copy_header_line,
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165 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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166
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167 { ngx_string("Connection"),
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168 ngx_http_upstream_ignore_header_line, 0,
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169 ngx_http_upstream_ignore_header_line, 0, 0 },
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170
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171 { ngx_string("X-Pad"),
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172 ngx_http_upstream_ignore_header_line, 0,
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173 ngx_http_upstream_ignore_header_line, 0, 0 },
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174
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175 { ngx_string("X-Powered-By"),
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176 ngx_http_upstream_ignore_header_line, 0,
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177 ngx_http_upstream_conditional_copy_header_line,
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178 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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179
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180 { ngx_string("X-Accel-Expires"),
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181 ngx_http_upstream_process_header_line,
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182 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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183 ngx_http_upstream_conditional_copy_header_line,
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184 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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185
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186 { ngx_string("X-Accel-Redirect"),
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187 ngx_http_upstream_process_header_line,
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188 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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189 ngx_http_upstream_ignore_header_line, 0, 0 },
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190
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191 { ngx_string("X-Accel-Limit-Rate"),
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192 ngx_http_upstream_process_limit_rate, 0,
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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194
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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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515
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202 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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203 };
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204
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205
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206 ngx_http_module_t ngx_http_upstream_module_ctx = {
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207 ngx_http_upstream_add_variables, /* preconfiguration */
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208 NULL, /* postconfiguration */
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209
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210 ngx_http_upstream_create_main_conf, /* create main configuration */
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211 ngx_http_core_init_main_conf, /* init main configuration */
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212
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213 NULL, /* create server configuration */
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214 NULL, /* merge server configuration */
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215
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216 NULL, /* create location configuration */
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217 NULL /* merge location configuration */
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218 };
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219
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220
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221 ngx_module_t ngx_http_upstream_module = {
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222 NGX_MODULE_V1,
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223 &ngx_http_upstream_module_ctx, /* module context */
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224 NULL, /* module directives */
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225 NGX_HTTP_MODULE, /* module type */
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226 NULL, /* init master */
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227 NULL, /* init module */
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228 NULL, /* init process */
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229 NULL, /* init thread */
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230 NULL, /* exit thread */
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231 NULL, /* exit process */
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232 NULL, /* exit master */
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233 NGX_MODULE_V1_PADDING
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234 };
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235
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236
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237 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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238 { ngx_string("upstream_status"), 0, NULL,
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239 ngx_http_upstream_log_status_getlen,
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240 ngx_http_upstream_log_status },
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241 { ngx_string("upstream_response_time"), 0, NULL,
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242 ngx_http_upstream_log_response_time_getlen,
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243 ngx_http_upstream_log_response_time },
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479
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244 { ngx_null_string, 0, NULL, NULL, NULL }
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245 };
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246
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247
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573
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248 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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249
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250 { ngx_string("upstream_status"),
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251 ngx_http_upstream_status_variable, 0, 0, 0 },
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252
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253 { ngx_string("upstream_response_time"),
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254 ngx_http_upstream_response_time_variable, 0, 0, 0 },
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255
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256 { ngx_null_string, NULL, 0, 0, 0 }
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257 };
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258
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259
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479
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260 char *ngx_http_upstream_header_errors[] = {
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261 "upstream sent invalid header",
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262 "upstream sent too long header line"
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263 };
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264
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265
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487
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266 void
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267 ngx_http_upstream_init(ngx_http_request_t *r)
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268 {
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269 ngx_time_t *tp;
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270 ngx_connection_t *c;
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271 ngx_http_cleanup_t *cln;
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272 ngx_http_upstream_t *u;
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273 ngx_http_core_loc_conf_t *clcf;
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274
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275 c = r->connection;
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276
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277 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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278 "http init upstream, client timer: %d", c->read->timer_set);
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279
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280 if (c->read->timer_set) {
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281 ngx_del_timer(c->read);
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282 }
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283
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284 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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285 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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286
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287 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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288
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289 if (!c->write->active) {
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290 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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291 == NGX_ERROR)
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292 {
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293 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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294 return;
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295 }
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296 }
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297 }
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298
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299 u = r->upstream;
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300
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301 if (r->request_body) {
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302 u->request_bufs = r->request_body->bufs;
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303 }
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304
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537
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305 if (u->create_request(r) != NGX_OK) {
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306 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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307 return;
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308 }
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309
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310 u->peer.log = r->connection->log;
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311 u->saved_log_handler = r->log_handler;
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312 r->log_handler = ngx_http_upstream_log_error;
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313
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314 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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315
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316 u->output.sendfile = r->connection->sendfile;
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317 u->output.pool = r->pool;
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318 u->output.bufs.num = 1;
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319 u->output.bufs.size = clcf->client_body_buffer_size;
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320 u->output.output_filter = ngx_chain_writer;
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321 u->output.filter_ctx = &u->writer;
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322
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323 u->writer.pool = r->pool;
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324
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325 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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326 sizeof(ngx_http_upstream_state_t))
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327 != NGX_OK)
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328 {
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329 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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330 return;
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331 }
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332
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501
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333 u->state = ngx_array_push(&u->states);
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334 if (u->state == NULL) {
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335 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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336 return;
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337 }
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338
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339 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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340
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563
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341 tp = ngx_timeofday();
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342
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343 u->state->response_time = tp->sec * 1000 + tp->msec;
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344
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345 cln = ngx_http_cleanup_add(r, sizeof(void *));
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346 if (cln == NULL) {
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347 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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348 return;
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349 }
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350
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351 cln->handler = ngx_http_upstream_cleanup;
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352 cln->data = r;
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353 u->cleanup = &cln->handler;
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354
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479
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355 ngx_http_upstream_connect(r, u);
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356 }
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357
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358
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487
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359 static void
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509
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360 ngx_http_upstream_rd_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->read);
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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_wr_check_broken_connection(ngx_http_request_t *r)
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368 {
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369 ngx_http_upstream_check_broken_connection(r, r->connection->write);
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370 }
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371
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372
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373 static void
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374 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
375 ngx_event_t *ev)
|
479
|
376 {
|
|
377 int n;
|
|
378 char buf[1];
|
577
|
379 ngx_err_t err;
|
479
|
380 ngx_connection_t *c;
|
|
381 ngx_http_upstream_t *u;
|
|
382
|
527
|
383 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
384 "http upstream check client, write event:%d, \"%V\"",
|
|
385 ev->write, &r->uri);
|
479
|
386
|
509
|
387 c = r->connection;
|
483
|
388 u = r->upstream;
|
|
389
|
527
|
390 if (c->closed) {
|
|
391 ngx_http_upstream_finalize_request(r, u,
|
|
392 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
393 return;
|
|
394 }
|
|
395
|
483
|
396 if (u->peer.connection == NULL) {
|
|
397 return;
|
|
398 }
|
|
399
|
479
|
400 #if (NGX_HAVE_KQUEUE)
|
|
401
|
|
402 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
403
|
|
404 if (!ev->pending_eof) {
|
|
405 return;
|
|
406 }
|
|
407
|
|
408 ev->eof = 1;
|
527
|
409 c->closed = 1;
|
479
|
410
|
|
411 if (ev->kq_errno) {
|
|
412 ev->error = 1;
|
|
413 }
|
|
414
|
|
415 if (!u->cachable && u->peer.connection) {
|
|
416 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
527
|
417 "kevent() reported that client closed prematurely "
|
|
418 "connection, so upstream connection is closed too");
|
479
|
419 ngx_http_upstream_finalize_request(r, u,
|
|
420 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
421 return;
|
|
422 }
|
|
423
|
|
424 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
425 "kevent() reported that client closed "
|
|
426 "prematurely connection");
|
|
427
|
|
428 if (u->peer.connection == NULL) {
|
|
429 ngx_http_upstream_finalize_request(r, u,
|
|
430 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
431 return;
|
|
432 }
|
|
433
|
|
434 return;
|
|
435 }
|
|
436
|
|
437 #endif
|
|
438
|
|
439 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
440
|
|
441 err = ngx_socket_errno;
|
|
442
|
|
443 /*
|
|
444 * we do not need to disable the write event because
|
|
445 * that event has NGX_USE_CLEAR_EVENT type
|
|
446 */
|
|
447
|
|
448 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
449 return;
|
|
450 }
|
|
451
|
|
452 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
453 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
454 ngx_http_upstream_finalize_request(r, u,
|
|
455 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
456 return;
|
|
457 }
|
|
458 }
|
|
459
|
|
460 if (n > 0) {
|
|
461 return;
|
|
462 }
|
|
463
|
|
464 if (n == -1) {
|
|
465 if (err == NGX_EAGAIN) {
|
|
466 return;
|
|
467 }
|
|
468
|
|
469 ev->error = 1;
|
|
470
|
483
|
471 } else { /* n == 0 */
|
479
|
472 err = 0;
|
|
473 }
|
|
474
|
529
|
475 ev->eof = 1;
|
|
476 c->closed = 1;
|
|
477
|
479
|
478 if (!u->cachable && u->peer.connection) {
|
|
479 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
480 "client closed prematurely connection, "
|
|
481 "so upstream connection is closed too");
|
|
482 ngx_http_upstream_finalize_request(r, u,
|
|
483 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
484 return;
|
|
485 }
|
|
486
|
|
487 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
488 "client closed prematurely connection");
|
|
489
|
|
490 if (u->peer.connection == NULL) {
|
|
491 ngx_http_upstream_finalize_request(r, u,
|
|
492 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
493 return;
|
|
494 }
|
|
495 }
|
|
496
|
|
497
|
487
|
498 static void
|
|
499 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
479
|
500 {
|
|
501 ngx_int_t rc;
|
577
|
502 ngx_peer_t *peer;
|
479
|
503 ngx_connection_t *c;
|
|
504
|
483
|
505 r->connection->log->action = "connecting to upstream";
|
479
|
506
|
|
507 r->connection->single_connection = 0;
|
|
508
|
|
509 rc = ngx_event_connect_peer(&u->peer);
|
|
510
|
|
511 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
512 "http upstream connect: %i", rc);
|
|
513
|
|
514 if (rc == NGX_ERROR) {
|
|
515 ngx_http_upstream_finalize_request(r, u,
|
|
516 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
517 return;
|
|
518 }
|
|
519
|
577
|
520 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
521 u->state->peer = &peer->name;
|
479
|
522
|
543
|
523 if (rc == NGX_BUSY) {
|
|
524 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
525 }
|
|
526
|
|
527 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
479
|
528 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
529 return;
|
|
530 }
|
|
531
|
577
|
532 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
533
|
479
|
534 c = u->peer.connection;
|
|
535
|
|
536 c->data = r;
|
509
|
537 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
538 c->read->handler = ngx_http_upstream_process_header;
|
479
|
539
|
|
540 c->sendfile = r->connection->sendfile;
|
|
541
|
|
542 c->pool = r->pool;
|
|
543 c->read->log = c->write->log = c->log = r->connection->log;
|
|
544
|
|
545 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
546
|
|
547 u->writer.out = NULL;
|
|
548 u->writer.last = &u->writer.out;
|
|
549 u->writer.connection = c;
|
|
550 u->writer.limit = 0;
|
|
551
|
|
552 if (u->request_sent) {
|
509
|
553 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
554 ngx_http_upstream_finalize_request(r, u,
|
|
555 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
556 return;
|
|
557 }
|
479
|
558 }
|
|
559
|
573
|
560 if (r->request_body && r->request_body->temp_file && r->main == r) {
|
|
561
|
|
562 /*
|
|
563 * the r->request_body->buf can be reused for one request only,
|
|
564 * the subrequests should allocate their own temporay bufs
|
|
565 */
|
|
566
|
|
567 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
568 if (u->output.free == NULL) {
|
|
569 ngx_http_upstream_finalize_request(r, u,
|
|
570 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
571 return;
|
479
|
572 }
|
573
|
573
|
|
574 u->output.free->buf = r->request_body->buf;
|
|
575 u->output.free->next = NULL;
|
|
576 u->output.allocated = 1;
|
|
577
|
|
578 r->request_body->buf->pos = r->request_body->buf->start;
|
|
579 r->request_body->buf->last = r->request_body->buf->start;
|
|
580 r->request_body->buf->tag = u->output.tag;
|
479
|
581 }
|
|
582
|
|
583 u->request_sent = 0;
|
|
584
|
|
585 if (rc == NGX_AGAIN) {
|
|
586 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
587 return;
|
|
588 }
|
|
589
|
|
590 /* rc == NGX_OK */
|
|
591
|
577
|
592 #if (NGX_HTTP_SSL)
|
|
593
|
|
594 if (u->conf->ssl) {
|
|
595 if (c->ssl == NULL) {
|
|
596
|
|
597 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
598 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
599 == NGX_ERROR)
|
|
600 {
|
|
601 ngx_http_upstream_finalize_request(r, u,
|
|
602 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
603 return;
|
|
604 }
|
|
605
|
|
606 c->sendfile = 0;
|
|
607 }
|
|
608
|
|
609 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
610 ngx_http_upstream_finalize_request(r, u,
|
|
611 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
612 return;
|
|
613 }
|
|
614
|
|
615 rc = ngx_ssl_handshake(c);
|
|
616
|
|
617 if (rc == NGX_AGAIN) {
|
|
618 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
619 return;
|
|
620 }
|
|
621
|
|
622 ngx_http_upstream_ssl_handshake(c);
|
|
623
|
|
624 return;
|
|
625 }
|
|
626
|
|
627 #endif
|
|
628
|
479
|
629 ngx_http_upstream_send_request(r, u);
|
|
630 }
|
|
631
|
|
632
|
577
|
633 #if (NGX_HTTP_SSL)
|
|
634
|
|
635 static void
|
|
636 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
637 {
|
|
638 ngx_http_request_t *r;
|
|
639 ngx_http_upstream_t *u;
|
|
640
|
|
641 r = c->data;
|
|
642 u = r->upstream;
|
|
643
|
|
644 if (c->ssl->handshaked) {
|
|
645
|
|
646 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
647 c->read->handler = ngx_http_upstream_process_header;
|
|
648
|
|
649 ngx_http_upstream_send_request(r, u);
|
|
650
|
|
651 return;
|
|
652 }
|
|
653
|
|
654 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
655
|
|
656 }
|
|
657
|
|
658 #endif
|
|
659
|
|
660
|
509
|
661 static ngx_int_t
|
487
|
662 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
479
|
663 {
|
|
664 ngx_chain_t *cl;
|
|
665
|
509
|
666 if (u->reinit_request(r) != NGX_OK) {
|
|
667 return NGX_ERROR;
|
|
668 }
|
|
669
|
|
670 ngx_memzero(&r->upstream->headers_in,
|
|
671 sizeof(ngx_http_upstream_headers_in_t));
|
|
672
|
|
673 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
674 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
675 {
|
|
676 return NGX_ERROR;
|
479
|
677 }
|
|
678
|
|
679 /* reinit the request chain */
|
577
|
680
|
509
|
681 for (cl = u->request_bufs; cl; cl = cl->next) {
|
479
|
682 cl->buf->pos = cl->buf->start;
|
|
683 cl->buf->file_pos = 0;
|
|
684 }
|
|
685
|
509
|
686 /* reinit the subrequest's ngx_output_chain() context */
|
|
687
|
573
|
688 if (r->request_body && r->request_body->temp_file
|
|
689 && r->main != r && u->output.buf)
|
|
690 {
|
|
691 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
692 if (u->output.free == NULL) {
|
|
693 return NGX_ERROR;
|
509
|
694 }
|
573
|
695
|
|
696 u->output.free->buf = u->output.buf;
|
|
697 u->output.free->next = NULL;
|
|
698
|
|
699 u->output.buf->pos = u->output.buf->start;
|
|
700 u->output.buf->last = u->output.buf->start;
|
509
|
701 }
|
479
|
702
|
|
703 u->output.buf = NULL;
|
|
704 u->output.in = NULL;
|
|
705 u->output.busy = NULL;
|
577
|
706
|
581
|
707 /* reinit u->buffer */
|
577
|
708
|
479
|
709 #if 0
|
|
710 if (u->cache) {
|
581
|
711 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
712 u->buffer.last = u->buffer.pos;
|
479
|
713
|
|
714 } else {
|
581
|
715 u->buffer.pos = u->buffer.start;
|
|
716 u->buffer.last = u->buffer.start;
|
479
|
717 }
|
|
718 #else
|
509
|
719
|
581
|
720 u->buffer.pos = u->buffer.start;
|
|
721 u->buffer.last = u->buffer.start;
|
509
|
722
|
479
|
723 #endif
|
|
724
|
|
725 /* add one more state */
|
|
726
|
501
|
727 u->state = ngx_array_push(&u->states);
|
|
728 if (u->state == NULL) {
|
509
|
729 return NGX_ERROR;
|
479
|
730 }
|
|
731
|
|
732 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
509
|
733
|
|
734 return NGX_OK;
|
479
|
735 }
|
|
736
|
|
737
|
487
|
738 static void
|
|
739 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
479
|
740 {
|
483
|
741 int rc;
|
|
742 ngx_connection_t *c;
|
577
|
743
|
479
|
744 c = u->peer.connection;
|
|
745
|
|
746 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
747 "http upstream send request");
|
|
748
|
|
749 #if (NGX_HAVE_KQUEUE)
|
|
750
|
|
751 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
752 && !u->request_sent
|
|
753 && c->write->pending_eof)
|
|
754 {
|
537
|
755 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
756 "kevent() reported that connect() failed");
|
479
|
757 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
758 return;
|
|
759 }
|
|
760
|
|
761 #endif
|
|
762
|
483
|
763 c->log->action = "sending request to upstream";
|
479
|
764
|
509
|
765 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
479
|
766
|
|
767 u->request_sent = 1;
|
|
768
|
|
769 if (rc == NGX_ERROR) {
|
|
770 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
771 return;
|
|
772 }
|
|
773
|
|
774 if (c->write->timer_set) {
|
|
775 ngx_del_timer(c->write);
|
|
776 }
|
|
777
|
|
778 if (rc == NGX_AGAIN) {
|
|
779 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
780
|
|
781 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
782 {
|
|
783 ngx_http_upstream_finalize_request(r, u,
|
|
784 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
785 return;
|
|
786 }
|
|
787
|
|
788 return;
|
|
789 }
|
|
790
|
|
791 /* rc == NGX_OK */
|
|
792
|
|
793 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
794 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
795 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
796 ngx_tcp_push_n " failed");
|
|
797 ngx_http_upstream_finalize_request(r, u,
|
|
798 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
577
|
799 return;
|
479
|
800 }
|
|
801
|
|
802 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
803 }
|
577
|
804
|
479
|
805 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
806
|
|
807 #if 1
|
|
808 if (c->read->ready) {
|
577
|
809
|
479
|
810 /* post aio operation */
|
|
811
|
|
812 /*
|
|
813 * TODO comment
|
|
814 * although we can post aio operation just in the end
|
|
815 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
816 * it's better to do here because we postpone header buffer allocation
|
|
817 */
|
|
818
|
|
819 ngx_http_upstream_process_header(c->read);
|
|
820 return;
|
|
821 }
|
|
822 #endif
|
|
823
|
509
|
824 c->write->handler = ngx_http_upstream_dummy_handler;
|
479
|
825
|
509
|
826 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
479
|
827 ngx_http_upstream_finalize_request(r, u,
|
|
828 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
829 return;
|
|
830 }
|
|
831 }
|
|
832
|
|
833
|
487
|
834 static void
|
|
835 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
479
|
836 {
|
|
837 ngx_connection_t *c;
|
|
838 ngx_http_request_t *r;
|
|
839 ngx_http_upstream_t *u;
|
|
840
|
|
841 c = wev->data;
|
|
842 r = c->data;
|
|
843 u = r->upstream;
|
|
844
|
|
845 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
846 "http upstream send request handler");
|
|
847
|
|
848 if (wev->timedout) {
|
483
|
849 c->log->action = "sending request to upstream";
|
479
|
850 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
851 return;
|
|
852 }
|
|
853
|
|
854 ngx_http_upstream_send_request(r, u);
|
|
855 }
|
|
856
|
|
857
|
487
|
858 static void
|
|
859 ngx_http_upstream_process_header(ngx_event_t *rev)
|
479
|
860 {
|
515
|
861 ssize_t n;
|
|
862 ngx_int_t rc;
|
573
|
863 ngx_str_t *uri, args;
|
|
864 ngx_uint_t i, key, flags;
|
515
|
865 ngx_list_part_t *part;
|
|
866 ngx_table_elt_t *h;
|
|
867 ngx_connection_t *c;
|
|
868 ngx_http_request_t *r;
|
|
869 ngx_http_upstream_t *u;
|
|
870 ngx_http_err_page_t *err_page;
|
|
871 ngx_http_core_loc_conf_t *clcf;
|
|
872 ngx_http_upstream_header_t *hh;
|
|
873 ngx_http_upstream_main_conf_t *umcf;
|
479
|
874
|
|
875 c = rev->data;
|
|
876 r = c->data;
|
|
877 u = r->upstream;
|
|
878
|
|
879 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
483
|
880 "http upstream process header");
|
479
|
881
|
483
|
882 c->log->action = "reading response header from upstream";
|
479
|
883
|
|
884 if (rev->timedout) {
|
|
885 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
886 return;
|
|
887 }
|
577
|
888
|
581
|
889 if (u->buffer.start == NULL) {
|
|
890 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
891 if (u->buffer.start == NULL) {
|
479
|
892 ngx_http_upstream_finalize_request(r, u,
|
|
893 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
894 return;
|
|
895 }
|
|
896
|
581
|
897 u->buffer.pos = u->buffer.start;
|
|
898 u->buffer.last = u->buffer.start;
|
|
899 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
900 u->buffer.temporary = 1;
|
|
901
|
|
902 u->buffer.tag = u->output.tag;
|
479
|
903
|
509
|
904 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
581
|
905 sizeof(ngx_table_elt_t))
|
|
906 != NGX_OK)
|
509
|
907 {
|
|
908 ngx_http_upstream_finalize_request(r, u,
|
|
909 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
910 return;
|
|
911 }
|
|
912
|
479
|
913 #if 0
|
|
914 if (u->cache) {
|
581
|
915 u->buffer.pos += u->cache->ctx.header_size;
|
|
916 u->buffer.last = u->buffer.pos;
|
479
|
917 }
|
|
918 #endif
|
|
919 }
|
|
920
|
581
|
921 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
922 u->buffer.end - u->buffer.last);
|
479
|
923
|
|
924 if (n == NGX_AGAIN) {
|
|
925 #if 0
|
|
926 ngx_add_timer(rev, u->read_timeout);
|
|
927 #endif
|
|
928
|
|
929 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
930 ngx_http_upstream_finalize_request(r, u,
|
|
931 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
932 return;
|
|
933 }
|
|
934
|
|
935 return;
|
|
936 }
|
|
937
|
|
938 if (n == 0) {
|
|
939 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
940 "upstream prematurely closed connection");
|
|
941 }
|
|
942
|
|
943 if (n == NGX_ERROR || n == 0) {
|
|
944 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
945 return;
|
|
946 }
|
|
947
|
581
|
948 u->buffer.last += n;
|
479
|
949
|
|
950 #if 0
|
|
951 u->valid_header_in = 0;
|
|
952
|
|
953 u->peer.cached = 0;
|
|
954 #endif
|
|
955
|
|
956 rc = u->process_header(r);
|
|
957
|
|
958 if (rc == NGX_AGAIN) {
|
|
959 #if 0
|
|
960 ngx_add_timer(rev, u->read_timeout);
|
|
961 #endif
|
|
962
|
581
|
963 if (u->buffer.pos == u->buffer.end) {
|
479
|
964 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
965 "upstream sent too big header");
|
|
966
|
|
967 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
968 return;
|
|
969 }
|
|
970
|
|
971 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
972 ngx_http_upstream_finalize_request(r, u,
|
|
973 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
974 return;
|
|
975 }
|
|
976
|
|
977 return;
|
|
978 }
|
|
979
|
|
980 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
981 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
982 return;
|
|
983 }
|
|
984
|
|
985 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
986 ngx_http_upstream_finalize_request(r, u,
|
|
987 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
988 return;
|
|
989 }
|
|
990
|
|
991 /* rc == NGX_OK */
|
|
992
|
529
|
993 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
509
|
994
|
|
995 if (u->peer.tries > 1
|
|
996 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
997 {
|
|
998 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
999 return;
|
|
1000 }
|
|
1001
|
|
1002 #if (NGX_HTTP_CACHE)
|
|
1003
|
|
1004 if (u->peer.tries == 0
|
|
1005 && u->stale
|
|
1006 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
1007 {
|
|
1008 ngx_http_upstream_finalize_request(r, u,
|
529
|
1009 ngx_http_send_cached_response(r));
|
509
|
1010 return;
|
|
1011 }
|
|
1012
|
|
1013 #endif
|
|
1014 }
|
|
1015
|
529
|
1016 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
509
|
1017 && u->peer.tries > 1
|
|
1018 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
1019 {
|
|
1020 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
1021 return;
|
|
1022 }
|
|
1023
|
|
1024
|
529
|
1025 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
487
|
1026 && u->conf->redirect_errors
|
|
1027 && r->err_ctx == NULL)
|
|
1028 {
|
581
|
1029 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
1030 && u->conf->redirect_404)
|
|
1031 {
|
|
1032 ngx_http_upstream_finalize_request(r, u, 404);
|
|
1033 return;
|
|
1034 }
|
|
1035
|
487
|
1036 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1037
|
|
1038 if (clcf->error_pages) {
|
|
1039
|
|
1040 err_page = clcf->error_pages->elts;
|
|
1041 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
529
|
1042 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
1043
|
|
1044 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
1045
|
|
1046 r->headers_out.www_authenticate =
|
|
1047 ngx_list_push(&r->headers_out.headers);
|
|
1048
|
|
1049 if (r->headers_out.www_authenticate == NULL) {
|
|
1050 ngx_http_upstream_finalize_request(r, u,
|
|
1051 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1052 return;
|
|
1053 }
|
|
1054
|
577
|
1055 *r->headers_out.www_authenticate =
|
529
|
1056 *u->headers_in.www_authenticate;
|
|
1057 }
|
|
1058
|
487
|
1059 ngx_http_upstream_finalize_request(r, u,
|
529
|
1060 u->headers_in.status_n);
|
487
|
1061 return;
|
|
1062 }
|
|
1063 }
|
|
1064 }
|
|
1065 }
|
|
1066
|
515
|
1067 if (r->upstream->headers_in.x_accel_redirect) {
|
|
1068 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1069
|
|
1070 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1071 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
1072
|
|
1073 part = &r->upstream->headers_in.headers.part;
|
|
1074 h = part->elts;
|
|
1075
|
|
1076 for (i = 0; /* void */; i++) {
|
|
1077
|
|
1078 if (i >= part->nelts) {
|
|
1079 if (part->next == NULL) {
|
|
1080 break;
|
|
1081 }
|
577
|
1082
|
515
|
1083 part = part->next;
|
|
1084 h = part->elts;
|
|
1085 i = 0;
|
|
1086 }
|
|
1087
|
|
1088 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
1089
|
|
1090 if (hh[key].redirect
|
|
1091 && hh[key].name.len == h[i].key.len
|
|
1092 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
1093 {
|
|
1094 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
1095 ngx_http_upstream_finalize_request(r, u,
|
|
1096 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1097 return;
|
|
1098 }
|
|
1099
|
|
1100 }
|
|
1101 }
|
|
1102
|
573
|
1103 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
1104 args.len = 0;
|
|
1105 args.data = NULL;
|
|
1106 flags = 0;
|
|
1107
|
|
1108 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
1109 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
1110 return;
|
|
1111 }
|
|
1112
|
|
1113 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
1114 r->zero_in_uri = 1;
|
|
1115 }
|
|
1116
|
|
1117 ngx_http_internal_redirect(r, uri, &args);
|
515
|
1118 return;
|
|
1119 }
|
|
1120
|
479
|
1121 ngx_http_upstream_send_response(r, u);
|
|
1122 }
|
|
1123
|
|
1124
|
487
|
1125 static void
|
|
1126 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
479
|
1127 {
|
581
|
1128 ssize_t size;
|
509
|
1129 ngx_int_t rc;
|
|
1130 ngx_uint_t i, key;
|
|
1131 ngx_list_part_t *part;
|
|
1132 ngx_table_elt_t *h;
|
|
1133 ngx_event_pipe_t *p;
|
563
|
1134 ngx_pool_cleanup_t *cl;
|
|
1135 ngx_pool_cleanup_file_t *clf;
|
509
|
1136 ngx_http_core_loc_conf_t *clcf;
|
|
1137 ngx_http_upstream_header_t *hh;
|
|
1138 ngx_http_upstream_main_conf_t *umcf;
|
|
1139
|
|
1140 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1141 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
1142
|
|
1143 part = &r->upstream->headers_in.headers.part;
|
|
1144 h = part->elts;
|
|
1145
|
|
1146 for (i = 0; /* void */; i++) {
|
479
|
1147
|
509
|
1148 if (i >= part->nelts) {
|
|
1149 if (part->next == NULL) {
|
|
1150 break;
|
|
1151 }
|
577
|
1152
|
509
|
1153 part = part->next;
|
|
1154 h = part->elts;
|
|
1155 i = 0;
|
|
1156 }
|
|
1157
|
|
1158 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
1159
|
|
1160 if (hh[key].name.len == h[i].key.len
|
|
1161 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
1162 {
|
|
1163 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
1164 ngx_http_upstream_finalize_request(r, u,
|
|
1165 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1166 return;
|
|
1167 }
|
|
1168
|
|
1169 continue;
|
|
1170 }
|
|
1171
|
|
1172 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1173 ngx_http_upstream_finalize_request(r, u,
|
|
1174 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1175 return;
|
|
1176 }
|
|
1177 }
|
|
1178
|
529
|
1179 r->headers_out.status = u->headers_in.status_n;
|
|
1180 r->headers_out.status_line = u->headers_in.status_line;
|
|
1181
|
581
|
1182 if (r->headers_out.content_length_n != -1) {
|
|
1183 u->length = (size_t) r->headers_out.content_length_n;
|
|
1184
|
|
1185 } else {
|
|
1186 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1187 }
|
|
1188
|
509
|
1189 rc = ngx_http_send_header(r);
|
479
|
1190
|
485
|
1191 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
1192 ngx_http_upstream_finalize_request(r, u, rc);
|
479
|
1193 return;
|
|
1194 }
|
|
1195
|
|
1196 u->header_sent = 1;
|
|
1197
|
573
|
1198 if (r->request_body && r->request_body->temp_file) {
|
563
|
1199 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
1200 if (cl->handler == ngx_pool_cleanup_file) {
|
|
1201 clf = cl->data;
|
|
1202
|
|
1203 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
1204 cl->handler(clf);
|
|
1205 cl->handler = NULL;
|
|
1206 break;
|
|
1207 }
|
|
1208 }
|
|
1209 }
|
|
1210 }
|
|
1211
|
581
|
1212 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1213
|
|
1214 if (u->pipe == NULL) {
|
|
1215
|
|
1216 if (u->input_filter == NULL) {
|
|
1217 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1218 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1219 u->input_filter_ctx = r;
|
|
1220 }
|
|
1221
|
|
1222 u->peer.connection->read->handler =
|
|
1223 ngx_http_upstream_process_non_buffered_body;
|
|
1224 r->write_event_handler =
|
|
1225 ngx_http_upstream_process_non_buffered_downstream;
|
|
1226
|
|
1227 r->limit_rate = 0;
|
|
1228
|
|
1229 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1230 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1231 return;
|
|
1232 }
|
|
1233
|
|
1234 size = u->buffer.last - u->buffer.pos;
|
|
1235
|
|
1236 if (size) {
|
|
1237 u->buffer.last = u->buffer.pos;
|
|
1238
|
|
1239 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
1240 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1241 return;
|
|
1242 }
|
|
1243
|
|
1244 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
1245
|
|
1246 } else {
|
|
1247 u->buffer.pos = u->buffer.start;
|
|
1248 u->buffer.last = u->buffer.start;
|
|
1249
|
|
1250 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
1251 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1252 return;
|
|
1253 }
|
|
1254 }
|
|
1255
|
|
1256 return;
|
|
1257 }
|
|
1258
|
479
|
1259 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
1260
|
|
1261 #if 0
|
|
1262
|
|
1263 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
1264 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
1265 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
1266 ngx_close_file_n " \"%s\" failed",
|
|
1267 u->cache->ctx.file.name.data);
|
|
1268 }
|
|
1269 }
|
|
1270
|
|
1271 if (u->cachable) {
|
581
|
1272 header = (ngx_http_cache_header_t *) u->buffer->start;
|
479
|
1273
|
|
1274 header->expires = u->cache->ctx.expires;
|
|
1275 header->last_modified = u->cache->ctx.last_modified;
|
|
1276 header->date = u->cache->ctx.date;
|
|
1277 header->length = r->headers_out.content_length_n;
|
|
1278 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
1279
|
|
1280 header->key_len = u->cache->ctx.key0.len;
|
|
1281 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
1282 header->key[header->key_len] = LF;
|
|
1283 }
|
|
1284
|
|
1285 #endif
|
|
1286
|
581
|
1287 p = u->pipe;
|
479
|
1288
|
|
1289 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
1290 p->output_ctx = r;
|
|
1291 p->tag = u->output.tag;
|
577
|
1292 p->bufs = u->conf->bufs;
|
479
|
1293 p->busy_size = u->conf->busy_buffers_size;
|
|
1294 p->upstream = u->peer.connection;
|
|
1295 p->downstream = r->connection;
|
|
1296 p->pool = r->pool;
|
|
1297 p->log = r->connection->log;
|
577
|
1298
|
479
|
1299 p->cachable = u->cachable;
|
|
1300
|
501
|
1301 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
1302 if (p->temp_file == NULL) {
|
479
|
1303 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1304 return;
|
|
1305 }
|
|
1306
|
|
1307 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
1308 p->temp_file->file.log = r->connection->log;
|
|
1309 p->temp_file->path = u->conf->temp_path;
|
|
1310 p->temp_file->pool = r->pool;
|
577
|
1311
|
479
|
1312 if (u->cachable) {
|
|
1313 p->temp_file->persistent = 1;
|
|
1314 } else {
|
|
1315 p->temp_file->warn = "an upstream response is buffered "
|
|
1316 "to a temporary file";
|
|
1317 }
|
|
1318
|
|
1319 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
1320 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
1321
|
501
|
1322 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
1323 if (p->preread_bufs == NULL) {
|
479
|
1324 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1325 return;
|
|
1326 }
|
581
|
1327 p->preread_bufs->buf = &u->buffer;
|
479
|
1328 p->preread_bufs->next = NULL;
|
581
|
1329 u->buffer.recycled = 1;
|
|
1330
|
|
1331 p->preread_size = u->buffer.last - u->buffer.pos;
|
479
|
1332
|
|
1333 if (u->cachable) {
|
|
1334 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
1335 if (p->buf_to_file == NULL) {
|
|
1336 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1337 return;
|
|
1338 }
|
581
|
1339 p->buf_to_file->pos = u->buffer.start;
|
|
1340 p->buf_to_file->last = u->buffer.pos;
|
479
|
1341 p->buf_to_file->temporary = 1;
|
|
1342 }
|
|
1343
|
|
1344 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
1345 /* the posted aio operation may currupt a shadow buffer */
|
|
1346 p->single_buf = 1;
|
|
1347 }
|
|
1348
|
|
1349 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
1350 p->free_bufs = 1;
|
|
1351
|
|
1352 /*
|
581
|
1353 * event_pipe would do u->buffer.last += p->preread_size
|
479
|
1354 * as though these bytes were read
|
|
1355 */
|
581
|
1356 u->buffer.last = u->buffer.pos;
|
479
|
1357
|
|
1358 if (u->conf->cyclic_temp_file) {
|
|
1359
|
|
1360 /*
|
|
1361 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
1362 * because the writing a new data may interfere with sendfile()
|
|
1363 * that uses the same kernel file pages (at least on FreeBSD)
|
|
1364 */
|
|
1365
|
|
1366 p->cyclic_temp_file = 1;
|
|
1367 r->connection->sendfile = 0;
|
|
1368
|
|
1369 } else {
|
|
1370 p->cyclic_temp_file = 0;
|
|
1371 }
|
|
1372
|
|
1373 p->read_timeout = u->conf->read_timeout;
|
|
1374 p->send_timeout = clcf->send_timeout;
|
|
1375 p->send_lowat = clcf->send_lowat;
|
|
1376
|
509
|
1377 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
1378 r->write_event_handler = ngx_http_upstream_process_downstream;
|
479
|
1379
|
|
1380 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
1381 }
|
|
1382
|
|
1383
|
487
|
1384 static void
|
581
|
1385 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
1386 {
|
|
1387 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
1388 }
|
|
1389
|
|
1390
|
|
1391 static void
|
|
1392 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
1393 {
|
|
1394 size_t size;
|
|
1395 ssize_t n;
|
|
1396 ngx_buf_t *b;
|
|
1397 ngx_uint_t do_write;
|
|
1398 ngx_connection_t *c;
|
|
1399 ngx_http_request_t *r;
|
|
1400 ngx_http_upstream_t *u;
|
|
1401 ngx_http_core_loc_conf_t *clcf;
|
|
1402
|
|
1403 c = ev->data;
|
|
1404
|
|
1405 if (ev->write) {
|
|
1406 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1407 "http upstream process non buffered downstream");
|
|
1408 c->log->action = "sending to client";
|
|
1409
|
|
1410 } else {
|
|
1411 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1412 "http upstream process non buffered upstream");
|
|
1413 c->log->action = "reading upstream";
|
|
1414 }
|
|
1415
|
|
1416 if (ev->timedout) {
|
|
1417 if (ev->write) {
|
|
1418 c->timedout = 1;
|
|
1419 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
1420 "client timed out");
|
|
1421 } else {
|
|
1422 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
1423 "upstream timed out");
|
|
1424 }
|
|
1425 }
|
|
1426
|
|
1427 r = c->data;
|
|
1428 u = r->upstream;
|
|
1429
|
|
1430 b = &u->buffer;
|
|
1431
|
|
1432 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1433
|
|
1434 do_write = ev->write;
|
|
1435
|
|
1436 for ( ;; ) {
|
|
1437
|
|
1438 if (do_write) {
|
|
1439
|
|
1440 if (u->out_bufs || u->busy_bufs) {
|
|
1441 if (ngx_http_output_filter(r, u->out_bufs) == NGX_ERROR) {
|
|
1442 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1443 return;
|
|
1444 }
|
|
1445
|
|
1446 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
1447 &u->out_bufs, u->output.tag);
|
|
1448 }
|
|
1449
|
|
1450 if (u->busy_bufs == NULL) {
|
|
1451
|
|
1452 if (u->length == 0
|
|
1453 || u->peer.connection->read->eof
|
|
1454 || u->peer.connection->read->error)
|
|
1455 {
|
|
1456 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1457 return;
|
|
1458 }
|
|
1459
|
|
1460 b->pos = b->start;
|
|
1461 b->last = b->start;
|
|
1462 }
|
|
1463 }
|
|
1464
|
|
1465 size = b->end - b->last;
|
|
1466
|
|
1467 if (size > u->length) {
|
|
1468 size = u->length;
|
|
1469 }
|
|
1470
|
|
1471 if (size && u->peer.connection->read->ready) {
|
|
1472 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
1473
|
|
1474 if (n == NGX_AGAIN) {
|
|
1475 break;
|
|
1476 }
|
|
1477
|
|
1478 if (n > 0) {
|
|
1479 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1480 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1481 return;
|
|
1482 }
|
|
1483 }
|
|
1484
|
|
1485 do_write = 1;
|
|
1486
|
|
1487 continue;
|
|
1488 }
|
|
1489
|
|
1490 break;
|
|
1491 }
|
|
1492
|
|
1493 if (ngx_handle_write_event(r->connection->write, clcf->send_lowat)
|
|
1494 == NGX_ERROR)
|
|
1495 {
|
|
1496 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1497 return;
|
|
1498 }
|
|
1499
|
|
1500 if (r->connection->write->active) {
|
|
1501 ngx_add_timer(r->connection->write, clcf->send_timeout);
|
|
1502
|
|
1503 } else if (r->connection->write->timer_set) {
|
|
1504 ngx_del_timer(r->connection->write);
|
|
1505 }
|
|
1506
|
|
1507 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
1508 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1509 return;
|
|
1510 }
|
|
1511
|
|
1512 if (u->peer.connection->read->active) {
|
|
1513 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
1514
|
|
1515 } else if (r->connection->read->timer_set) {
|
|
1516 ngx_del_timer(r->connection->read);
|
|
1517 }
|
|
1518 }
|
|
1519
|
|
1520
|
|
1521 static ngx_int_t
|
|
1522 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
1523 {
|
|
1524 return NGX_OK;
|
|
1525 }
|
|
1526
|
|
1527
|
|
1528 static ngx_int_t
|
|
1529 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
1530 {
|
|
1531 ngx_http_request_t *r = data;
|
|
1532
|
|
1533 ngx_buf_t *b;
|
|
1534 ngx_chain_t *cl, **ll;
|
|
1535 ngx_http_upstream_t *u;
|
|
1536
|
|
1537 u = r->upstream;
|
|
1538
|
|
1539 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
1540 ll = &cl->next;
|
|
1541 }
|
|
1542
|
|
1543 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
1544 if (cl == NULL) {
|
|
1545 return NGX_ERROR;
|
|
1546 }
|
|
1547
|
|
1548 *ll = cl;
|
|
1549
|
|
1550 cl->buf->flush = 1;
|
|
1551 cl->buf->memory = 1;
|
|
1552
|
|
1553 b = &u->buffer;
|
|
1554
|
|
1555 cl->buf->pos = b->last;
|
|
1556 b->last += bytes;
|
|
1557 cl->buf->last = b->last;
|
|
1558
|
|
1559 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
1560 return NGX_OK;
|
|
1561 }
|
|
1562
|
|
1563 u->length -= bytes;
|
|
1564
|
|
1565 return NGX_OK;
|
|
1566 }
|
|
1567
|
|
1568
|
|
1569 static void
|
509
|
1570 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
1571 {
|
|
1572 ngx_http_upstream_process_body(r->connection->write);
|
|
1573 }
|
|
1574
|
|
1575
|
|
1576 static void
|
487
|
1577 ngx_http_upstream_process_body(ngx_event_t *ev)
|
479
|
1578 {
|
509
|
1579 ngx_event_pipe_t *p;
|
479
|
1580 ngx_connection_t *c;
|
|
1581 ngx_http_request_t *r;
|
|
1582 ngx_http_upstream_t *u;
|
|
1583
|
|
1584 c = ev->data;
|
|
1585 r = c->data;
|
|
1586 u = r->upstream;
|
|
1587
|
|
1588 if (ev->write) {
|
483
|
1589 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1590 "http upstream process downstream");
|
|
1591 c->log->action = "sending to client";
|
577
|
1592
|
479
|
1593 } else {
|
483
|
1594 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1595 "http upstream process upstream");
|
|
1596 c->log->action = "reading upstream";
|
479
|
1597 }
|
577
|
1598
|
581
|
1599 p = u->pipe;
|
479
|
1600
|
|
1601 if (ev->timedout) {
|
|
1602 if (ev->write) {
|
527
|
1603 if (ev->delayed) {
|
|
1604
|
|
1605 ev->timedout = 0;
|
|
1606 ev->delayed = 0;
|
|
1607
|
|
1608 if (!ev->ready) {
|
|
1609 ngx_add_timer(ev, p->send_timeout);
|
|
1610
|
|
1611 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
1612 {
|
|
1613 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1614 return;
|
|
1615 }
|
|
1616
|
|
1617 return;
|
|
1618 }
|
|
1619
|
|
1620 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
1621 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1622 return;
|
|
1623 }
|
|
1624
|
|
1625 } else {
|
|
1626 p->downstream_error = 1;
|
577
|
1627 c->timedout = 1;
|
527
|
1628 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
1629 "client timed out");
|
|
1630 }
|
479
|
1631
|
|
1632 } else {
|
577
|
1633 p->upstream_error = 1;
|
479
|
1634 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
1635 "upstream timed out");
|
|
1636 }
|
|
1637
|
|
1638 } else {
|
527
|
1639 if (ev->write && ev->delayed) {
|
|
1640 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1641 "http downstream delayed");
|
|
1642
|
|
1643 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
1644 return;
|
|
1645 }
|
|
1646
|
|
1647 return;
|
|
1648 }
|
|
1649
|
479
|
1650 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
1651 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1652 return;
|
|
1653 }
|
|
1654 }
|
577
|
1655
|
479
|
1656 if (u->peer.connection) {
|
|
1657
|
|
1658 #if (NGX_HTTP_FILE_CACHE)
|
|
1659
|
|
1660 if (p->upstream_done && u->cachable) {
|
|
1661 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
1662 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1663 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1664 return;
|
|
1665 }
|
|
1666
|
|
1667 } else if (p->upstream_eof && u->cachable) {
|
|
1668
|
|
1669 /* TODO: check length & update cache */
|
|
1670
|
|
1671 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
1672 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1673 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1674 return;
|
|
1675 }
|
|
1676 }
|
|
1677
|
|
1678 #endif
|
|
1679
|
|
1680 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
483
|
1681 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1682 "http upstream exit: %p", p->out);
|
479
|
1683 #if 0
|
|
1684 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1685 #endif
|
|
1686 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1687 return;
|
|
1688 }
|
|
1689 }
|
|
1690
|
|
1691 if (p->downstream_error) {
|
483
|
1692 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1693 "http upstream downstream error");
|
479
|
1694
|
|
1695 if (!u->cachable && u->peer.connection) {
|
|
1696 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1697 }
|
|
1698 }
|
|
1699 }
|
|
1700
|
|
1701
|
487
|
1702 static void
|
|
1703 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
479
|
1704 {
|
|
1705 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
1706 "http upstream dummy handler");
|
|
1707 }
|
|
1708
|
|
1709
|
487
|
1710 static void
|
|
1711 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
1712 ngx_uint_t ft_type)
|
479
|
1713 {
|
525
|
1714 ngx_uint_t status, down;
|
479
|
1715
|
|
1716 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1717 "http next upstream, %xD", ft_type);
|
|
1718
|
|
1719 #if 0
|
|
1720 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
1721 #endif
|
|
1722
|
525
|
1723 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
1724 down = 0;
|
|
1725 } else {
|
|
1726 down = 1;
|
479
|
1727 }
|
525
|
1728
|
|
1729 ngx_event_connect_peer_failed(&u->peer, down);
|
|
1730
|
479
|
1731 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
1732 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
1733 "upstream timed out");
|
|
1734 }
|
577
|
1735
|
479
|
1736 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
1737 status = 0;
|
|
1738
|
|
1739 } else {
|
|
1740 switch(ft_type) {
|
|
1741
|
|
1742 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
1743 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
1744 break;
|
|
1745
|
|
1746 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
1747 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
1748 break;
|
|
1749
|
|
1750 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
1751 status = NGX_HTTP_NOT_FOUND;
|
|
1752 break;
|
|
1753
|
|
1754 /*
|
|
1755 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
1756 * never reach here
|
|
1757 */
|
|
1758
|
|
1759 default:
|
|
1760 status = NGX_HTTP_BAD_GATEWAY;
|
|
1761 }
|
|
1762 }
|
|
1763
|
569
|
1764 if (r->connection->closed) {
|
479
|
1765 ngx_http_upstream_finalize_request(r, u,
|
|
1766 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1767 return;
|
|
1768 }
|
|
1769
|
|
1770 if (status) {
|
|
1771 u->state->status = status;
|
|
1772
|
525
|
1773 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
479
|
1774
|
|
1775 #if (NGX_HTTP_CACHE)
|
|
1776
|
|
1777 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
1778 ngx_http_upstream_finalize_request(r, u,
|
525
|
1779 ngx_http_send_cached_response(r));
|
479
|
1780 return;
|
|
1781 }
|
|
1782
|
|
1783 #endif
|
|
1784
|
|
1785 ngx_http_upstream_finalize_request(r, u, status);
|
|
1786 return;
|
|
1787 }
|
|
1788 }
|
|
1789
|
|
1790 if (u->peer.connection) {
|
|
1791 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1792 "close http upstream connection: %d",
|
|
1793 u->peer.connection->fd);
|
577
|
1794 #if (NGX_HTTP_SSL)
|
|
1795 if (u->peer.connection->ssl) {
|
|
1796 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
1797 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
1798 }
|
|
1799 #endif
|
479
|
1800 ngx_close_connection(u->peer.connection);
|
|
1801 }
|
|
1802
|
|
1803 #if 0
|
|
1804 if (u->conf->busy_lock && !u->busy_locked) {
|
|
1805 ngx_http_upstream_busy_lock(p);
|
|
1806 return;
|
|
1807 }
|
|
1808 #endif
|
|
1809
|
|
1810 ngx_http_upstream_connect(r, u);
|
|
1811 }
|
|
1812
|
|
1813
|
487
|
1814 static void
|
569
|
1815 ngx_http_upstream_cleanup(void *data)
|
|
1816 {
|
|
1817 ngx_http_request_t *r = data;
|
|
1818
|
|
1819 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1820 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
1821
|
|
1822 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
1823 }
|
|
1824
|
|
1825
|
|
1826 static void
|
487
|
1827 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
1828 ngx_http_upstream_t *u, ngx_int_t rc)
|
479
|
1829 {
|
563
|
1830 ngx_time_t *tp;
|
|
1831
|
483
|
1832 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1833 "finalize http upstream request: %i", rc);
|
479
|
1834
|
569
|
1835 *u->cleanup = NULL;
|
|
1836
|
563
|
1837 if (u->state->response_time) {
|
|
1838 tp = ngx_timeofday();
|
|
1839 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
1840 - u->state->response_time;
|
|
1841 }
|
|
1842
|
479
|
1843 u->finalize_request(r, rc);
|
|
1844
|
|
1845 if (u->peer.connection) {
|
|
1846 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1847 "close http upstream connection: %d",
|
|
1848 u->peer.connection->fd);
|
577
|
1849 #if (NGX_HTTP_SSL)
|
|
1850
|
|
1851 /* TODO: do not shutdown persistent connection */
|
|
1852
|
|
1853 if (u->peer.connection->ssl) {
|
|
1854 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
1855 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
1856 }
|
|
1857 #endif
|
479
|
1858 ngx_close_connection(u->peer.connection);
|
|
1859 }
|
|
1860
|
483
|
1861 u->peer.connection = NULL;
|
|
1862
|
563
|
1863 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
479
|
1864 {
|
|
1865 rc = 0;
|
|
1866 }
|
|
1867
|
581
|
1868 if (u->pipe && u->pipe->temp_file) {
|
479
|
1869 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1870 "http upstream temp fd: %d",
|
581
|
1871 u->pipe->temp_file->file.fd);
|
479
|
1872 }
|
|
1873
|
|
1874 #if 0
|
|
1875 if (u->cache) {
|
|
1876 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
483
|
1877 "http upstream cache fd: %d",
|
479
|
1878 u->cache->ctx.file.fd);
|
|
1879 }
|
|
1880 #endif
|
|
1881
|
509
|
1882 r->log_handler = u->saved_log_handler;
|
515
|
1883
|
|
1884 if (rc == NGX_DECLINED) {
|
|
1885 return;
|
|
1886 }
|
|
1887
|
483
|
1888 r->connection->log->action = "sending to client";
|
|
1889
|
553
|
1890 if (rc == 0 && r->main == r) {
|
581
|
1891 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
479
|
1892 }
|
|
1893
|
|
1894 ngx_http_finalize_request(r, rc);
|
|
1895 }
|
|
1896
|
|
1897
|
577
|
1898 #if (NGX_HTTP_SSL)
|
|
1899
|
|
1900 static void
|
|
1901 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
1902 {
|
|
1903 /* lock peer mutex */
|
|
1904
|
|
1905 if (peer->ssl_session) {
|
|
1906 ngx_ssl_free_session(peer->ssl_session);
|
|
1907 }
|
|
1908
|
|
1909 peer->ssl_session = ngx_ssl_get_session(c);
|
|
1910
|
|
1911 /* unlock peer mutex */
|
|
1912
|
|
1913 /*
|
|
1914 * We send the "close notify" shutdown alert to the upstream only
|
|
1915 * and do not wait its "close notify" shutdown alert.
|
|
1916 * It is acceptable according to the TLS standard.
|
|
1917 */
|
|
1918
|
|
1919 c->ssl->no_wait_shutdown = 1;
|
|
1920
|
|
1921 (void) ngx_ssl_shutdown(c);
|
|
1922 }
|
|
1923
|
|
1924 #endif
|
|
1925
|
|
1926
|
509
|
1927 static ngx_int_t
|
|
1928 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1929 ngx_uint_t offset)
|
577
|
1930 {
|
509
|
1931 ngx_table_elt_t **ph;
|
577
|
1932
|
509
|
1933 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
1934
|
|
1935 if (*ph == NULL) {
|
|
1936 *ph = h;
|
|
1937 }
|
|
1938
|
|
1939 return NGX_OK;
|
|
1940 }
|
|
1941
|
|
1942
|
|
1943 static ngx_int_t
|
|
1944 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
1945 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
1946 {
|
|
1947 ngx_array_t *pa;
|
|
1948 ngx_table_elt_t **ph;
|
|
1949
|
|
1950 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
1951
|
|
1952 if (pa->elts == NULL) {
|
|
1953 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
1954 {
|
|
1955 return NGX_ERROR;
|
|
1956 }
|
|
1957 }
|
|
1958
|
|
1959 ph = ngx_array_push(pa);
|
|
1960 if (ph == NULL) {
|
|
1961 return NGX_ERROR;
|
|
1962 }
|
|
1963
|
|
1964 *ph = h;
|
|
1965
|
|
1966 return NGX_OK;
|
|
1967 }
|
|
1968
|
|
1969
|
|
1970 static ngx_int_t
|
|
1971 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1972 ngx_uint_t offset)
|
|
1973 {
|
|
1974 return NGX_OK;
|
|
1975 }
|
|
1976
|
|
1977
|
|
1978 static ngx_int_t
|
527
|
1979 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1980 ngx_uint_t offset)
|
577
|
1981 {
|
527
|
1982 ngx_int_t n;
|
|
1983
|
|
1984 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
1985
|
|
1986 n = ngx_atoi(h->value.data, h->value.len);
|
|
1987
|
|
1988 if (n != NGX_ERROR) {
|
|
1989 r->limit_rate = (size_t) n;
|
|
1990 }
|
|
1991
|
|
1992 return NGX_OK;
|
|
1993 }
|
|
1994
|
|
1995
|
|
1996 static ngx_int_t
|
509
|
1997 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
1998 ngx_uint_t offset)
|
|
1999 {
|
573
|
2000 ngx_table_elt_t *ho, **ph;
|
509
|
2001
|
|
2002 ho = ngx_list_push(&r->headers_out.headers);
|
|
2003 if (ho == NULL) {
|
|
2004 return NGX_ERROR;
|
|
2005 }
|
|
2006
|
|
2007 *ho = *h;
|
|
2008
|
573
|
2009 if (offset) {
|
|
2010 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
2011 *ph = ho;
|
|
2012 }
|
|
2013
|
509
|
2014 return NGX_OK;
|
|
2015 }
|
|
2016
|
|
2017
|
|
2018 static ngx_int_t
|
|
2019 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
2020 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2021 {
|
|
2022 ngx_flag_t *f;
|
|
2023 ngx_table_elt_t *ho;
|
|
2024
|
|
2025 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
2026
|
|
2027 if (*f == 0) {
|
|
2028 return NGX_OK;
|
|
2029 }
|
|
2030
|
|
2031 ho = ngx_list_push(&r->headers_out.headers);
|
|
2032 if (ho == NULL) {
|
|
2033 return NGX_ERROR;
|
|
2034 }
|
|
2035
|
|
2036 *ho = *h;
|
|
2037
|
|
2038 return NGX_OK;
|
|
2039 }
|
|
2040
|
|
2041
|
|
2042 static ngx_int_t
|
|
2043 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
2044 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2045 {
|
|
2046 ngx_array_t *pa;
|
|
2047 ngx_table_elt_t *ho, **ph;
|
|
2048
|
|
2049 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
2050
|
|
2051 if (pa->elts == NULL) {
|
|
2052 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2053 {
|
|
2054 return NGX_ERROR;
|
|
2055 }
|
|
2056 }
|
|
2057
|
|
2058 ph = ngx_array_push(pa);
|
|
2059 if (ph == NULL) {
|
|
2060 return NGX_ERROR;
|
|
2061 }
|
|
2062
|
|
2063 ho = ngx_list_push(&r->headers_out.headers);
|
|
2064 if (ho == NULL) {
|
|
2065 return NGX_ERROR;
|
|
2066 }
|
|
2067
|
|
2068 *ho = *h;
|
|
2069 *ph = ho;
|
|
2070
|
|
2071 return NGX_OK;
|
|
2072 }
|
|
2073
|
|
2074
|
|
2075 static ngx_int_t
|
|
2076 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2077 ngx_uint_t offset)
|
|
2078 {
|
|
2079 r->headers_out.content_type = h->value;
|
|
2080
|
|
2081 return NGX_OK;
|
|
2082 }
|
|
2083
|
|
2084
|
|
2085 static ngx_int_t
|
|
2086 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2087 ngx_uint_t offset)
|
|
2088 {
|
|
2089 ngx_table_elt_t *ho;
|
|
2090
|
|
2091 ho = ngx_list_push(&r->headers_out.headers);
|
|
2092 if (ho == NULL) {
|
|
2093 return NGX_ERROR;
|
|
2094 }
|
|
2095
|
|
2096 *ho = *h;
|
|
2097
|
|
2098 r->headers_out.content_length = ho;
|
|
2099 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
2100
|
|
2101 return NGX_OK;
|
|
2102 }
|
|
2103
|
|
2104
|
|
2105 static ngx_int_t
|
|
2106 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2107 ngx_uint_t offset)
|
|
2108 {
|
|
2109 ngx_int_t rc;
|
|
2110 ngx_table_elt_t *ho;
|
|
2111
|
|
2112 ho = ngx_list_push(&r->headers_out.headers);
|
|
2113 if (ho == NULL) {
|
|
2114 return NGX_ERROR;
|
|
2115 }
|
|
2116
|
|
2117 *ho = *h;
|
|
2118
|
|
2119 if (r->upstream->rewrite_redirect) {
|
|
2120 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
2121
|
529
|
2122 if (rc == NGX_DECLINED) {
|
|
2123 return NGX_OK;
|
|
2124 }
|
|
2125
|
509
|
2126 if (rc == NGX_OK) {
|
|
2127 r->headers_out.location = ho;
|
|
2128
|
|
2129 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2130 "rewritten location: \"%V\"", &ho->value);
|
|
2131 }
|
|
2132
|
|
2133 return rc;
|
|
2134 }
|
|
2135
|
|
2136 /*
|
|
2137 * we do not set r->headers_out.location here to avoid the handling
|
|
2138 * the local redirects without a host name by ngx_http_header_filter()
|
|
2139 */
|
|
2140
|
|
2141 return NGX_OK;
|
|
2142 }
|
|
2143
|
|
2144
|
|
2145 static ngx_int_t
|
|
2146 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2147 ngx_uint_t offset)
|
|
2148 {
|
|
2149 u_char *p;
|
|
2150 ngx_int_t rc;
|
|
2151 ngx_table_elt_t *ho;
|
|
2152
|
|
2153 ho = ngx_list_push(&r->headers_out.headers);
|
|
2154 if (ho == NULL) {
|
|
2155 return NGX_ERROR;
|
|
2156 }
|
|
2157
|
|
2158 *ho = *h;
|
|
2159
|
|
2160 if (r->upstream->rewrite_redirect) {
|
|
2161
|
|
2162 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
2163
|
|
2164 if (p) {
|
|
2165 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
2166
|
|
2167 } else {
|
|
2168 return NGX_OK;
|
|
2169 }
|
|
2170
|
529
|
2171 if (rc == NGX_DECLINED) {
|
|
2172 return NGX_OK;
|
|
2173 }
|
|
2174
|
509
|
2175 #if (NGX_DEBUG)
|
|
2176 if (rc == NGX_OK) {
|
|
2177 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2178 "rewritten refresh: \"%V\"", &ho->value);
|
|
2179 }
|
|
2180 #endif
|
|
2181
|
|
2182 return rc;
|
|
2183 }
|
|
2184
|
|
2185 return NGX_OK;
|
|
2186 }
|
|
2187
|
|
2188
|
|
2189 #if (NGX_HTTP_GZIP)
|
|
2190
|
|
2191 static ngx_int_t
|
|
2192 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
2193 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2194 {
|
|
2195 ngx_table_elt_t *ho;
|
|
2196
|
|
2197 ho = ngx_list_push(&r->headers_out.headers);
|
|
2198 if (ho == NULL) {
|
|
2199 return NGX_ERROR;
|
|
2200 }
|
|
2201
|
|
2202 *ho = *h;
|
|
2203
|
|
2204 r->headers_out.content_encoding = ho;
|
|
2205
|
|
2206 return NGX_OK;
|
|
2207 }
|
|
2208
|
|
2209 #endif
|
|
2210
|
|
2211
|
487
|
2212 static size_t
|
|
2213 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
479
|
2214 {
|
|
2215 if (r->upstream) {
|
|
2216 return r->upstream->states.nelts * (3 + 2);
|
|
2217 }
|
|
2218
|
|
2219 return 1;
|
|
2220 }
|
|
2221
|
|
2222
|
487
|
2223 static u_char *
|
|
2224 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
2225 ngx_http_log_op_t *op)
|
479
|
2226 {
|
|
2227 ngx_uint_t i;
|
|
2228 ngx_http_upstream_t *u;
|
|
2229 ngx_http_upstream_state_t *state;
|
|
2230
|
|
2231 u = r->upstream;
|
|
2232
|
573
|
2233 if (u == NULL || u->states.nelts == 0) {
|
479
|
2234 *buf = '-';
|
|
2235 return buf + 1;
|
|
2236 }
|
|
2237
|
|
2238 i = 0;
|
|
2239 state = u->states.elts;
|
|
2240
|
|
2241 for ( ;; ) {
|
|
2242 if (state[i].status == 0) {
|
|
2243 *buf++ = '-';
|
|
2244
|
|
2245 } else {
|
|
2246 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
2247 }
|
|
2248
|
|
2249 if (++i == u->states.nelts) {
|
|
2250 return buf;
|
|
2251 }
|
|
2252
|
|
2253 *buf++ = ',';
|
|
2254 *buf++ = ' ';
|
|
2255 }
|
|
2256 }
|
|
2257
|
|
2258
|
573
|
2259 static size_t
|
|
2260 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
2261 uintptr_t data)
|
|
2262 {
|
|
2263 if (r->upstream) {
|
|
2264 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
2265 }
|
|
2266
|
|
2267 return 1;
|
|
2268 }
|
|
2269
|
|
2270
|
509
|
2271 static u_char *
|
563
|
2272 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
2273 ngx_http_log_op_t *op)
|
|
2274 {
|
|
2275 ngx_uint_t i;
|
|
2276 ngx_http_upstream_t *u;
|
|
2277 ngx_http_upstream_state_t *state;
|
|
2278
|
|
2279 u = r->upstream;
|
|
2280
|
573
|
2281 if (u == NULL || u->states.nelts == 0) {
|
563
|
2282 *buf = '-';
|
|
2283 return buf + 1;
|
|
2284 }
|
|
2285
|
|
2286 i = 0;
|
|
2287 state = u->states.elts;
|
|
2288
|
|
2289 for ( ;; ) {
|
|
2290 if (state[i].status == 0) {
|
|
2291 *buf++ = '-';
|
|
2292
|
|
2293 } else {
|
|
2294 buf = ngx_sprintf(buf, "%d.%03d",
|
|
2295 state[i].response_time / 1000,
|
|
2296 state[i].response_time % 1000);
|
|
2297 }
|
|
2298
|
|
2299 if (++i == u->states.nelts) {
|
|
2300 return buf;
|
|
2301 }
|
|
2302
|
|
2303 *buf++ = ',';
|
|
2304 *buf++ = ' ';
|
|
2305 }
|
|
2306 }
|
|
2307
|
|
2308
|
|
2309 static u_char *
|
509
|
2310 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
479
|
2311 {
|
|
2312 u_char *p;
|
|
2313 ngx_http_upstream_t *u;
|
|
2314 ngx_peer_connection_t *peer;
|
|
2315
|
|
2316 u = r->upstream;
|
|
2317 peer = &u->peer;
|
|
2318
|
|
2319 p = ngx_snprintf(buf, len,
|
509
|
2320 ", server: %V, URL: \"%V\","
|
569
|
2321 " upstream: \"%V%V%s%V\"",
|
503
|
2322 &r->server_name,
|
479
|
2323 &r->unparsed_uri,
|
509
|
2324 &u->conf->schema,
|
479
|
2325 &peer->peers->peer[peer->cur_peer].name,
|
|
2326 peer->peers->peer[peer->cur_peer].uri_separator,
|
555
|
2327 &u->uri);
|
479
|
2328 len -= p - buf;
|
|
2329 buf = p;
|
|
2330
|
505
|
2331 return ngx_http_log_error_info(r, buf, len);
|
479
|
2332 }
|
|
2333
|
|
2334
|
487
|
2335 static ngx_int_t
|
573
|
2336 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
479
|
2337 {
|
573
|
2338 ngx_http_variable_t *var, *v;
|
479
|
2339 ngx_http_log_op_name_t *op;
|
|
2340
|
573
|
2341 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
2342 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
2343 if (var == NULL) {
|
|
2344 return NGX_ERROR;
|
|
2345 }
|
|
2346
|
|
2347 var->handler = v->handler;
|
|
2348 var->data = v->data;
|
|
2349 }
|
|
2350
|
479
|
2351 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
2352 op->run = NULL;
|
|
2353
|
|
2354 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
2355 if (op->name.len == 0) {
|
|
2356 op = (ngx_http_log_op_name_t *) op->run;
|
|
2357 }
|
|
2358 }
|
|
2359
|
|
2360 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
2361
|
|
2362 return NGX_OK;
|
|
2363 }
|
509
|
2364
|
|
2365
|
573
|
2366 static ngx_int_t
|
|
2367 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
2368 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2369 {
|
|
2370 u_char *p;
|
|
2371 size_t len;
|
|
2372 ngx_uint_t i;
|
|
2373 ngx_http_upstream_t *u;
|
|
2374 ngx_http_upstream_state_t *state;
|
|
2375
|
|
2376 v->valid = 1;
|
|
2377 v->no_cachable = 0;
|
|
2378 v->not_found = 0;
|
|
2379
|
|
2380 u = r->upstream;
|
|
2381
|
|
2382 if (u == NULL || u->states.nelts == 0) {
|
|
2383 v->not_found = 1;
|
|
2384 return NGX_OK;
|
|
2385 }
|
|
2386
|
|
2387 len = u->states.nelts * (3 + 2);
|
|
2388
|
|
2389 p = ngx_palloc(r->pool, len);
|
|
2390 if (p == NULL) {
|
|
2391 return NGX_ERROR;
|
|
2392 }
|
|
2393
|
|
2394 v->data = p;
|
|
2395
|
|
2396 i = 0;
|
|
2397 state = u->states.elts;
|
|
2398
|
|
2399 for ( ;; ) {
|
|
2400 if (state[i].status == 0) {
|
|
2401 *p++ = '-';
|
|
2402
|
|
2403 } else {
|
|
2404 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
2405 }
|
|
2406
|
|
2407 if (++i == u->states.nelts) {
|
|
2408 break;
|
|
2409 }
|
|
2410
|
|
2411 *p++ = ',';
|
|
2412 *p++ = ' ';
|
|
2413 }
|
|
2414
|
|
2415 v->len = p - v->data;
|
|
2416
|
|
2417 return NGX_OK;
|
|
2418 }
|
|
2419
|
|
2420
|
|
2421 static ngx_int_t
|
|
2422 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
2423 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2424 {
|
|
2425 u_char *p;
|
|
2426 size_t len;
|
|
2427 ngx_uint_t i;
|
|
2428 ngx_http_upstream_t *u;
|
|
2429 ngx_http_upstream_state_t *state;
|
|
2430
|
|
2431 v->valid = 1;
|
|
2432 v->no_cachable = 0;
|
|
2433 v->not_found = 0;
|
|
2434
|
|
2435 u = r->upstream;
|
|
2436
|
|
2437 if (u == NULL || u->states.nelts == 0) {
|
|
2438 v->not_found = 1;
|
|
2439 return NGX_OK;
|
|
2440 }
|
|
2441
|
|
2442 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
2443
|
|
2444 p = ngx_palloc(r->pool, len);
|
|
2445 if (p == NULL) {
|
|
2446 return NGX_ERROR;
|
|
2447 }
|
|
2448
|
|
2449 v->data = p;
|
|
2450
|
|
2451 i = 0;
|
|
2452 state = u->states.elts;
|
|
2453
|
|
2454 for ( ;; ) {
|
|
2455 if (state[i].status == 0) {
|
|
2456 *p++ = '-';
|
|
2457
|
|
2458 } else {
|
|
2459 p = ngx_sprintf(p, "%d.%03d",
|
|
2460 state[i].response_time / 1000,
|
|
2461 state[i].response_time % 1000);
|
|
2462 }
|
|
2463
|
|
2464 if (++i == u->states.nelts) {
|
|
2465 break;
|
|
2466 }
|
|
2467
|
|
2468 *p++ = ',';
|
|
2469 *p++ = ' ';
|
|
2470 }
|
|
2471
|
|
2472 v->len = p - v->data;
|
|
2473
|
|
2474 return NGX_OK;
|
|
2475 }
|
|
2476
|
|
2477
|
509
|
2478 static void *
|
|
2479 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
2480 {
|
|
2481 ngx_http_upstream_main_conf_t *umcf;
|
|
2482
|
|
2483 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
2484 if (umcf == NULL) {
|
|
2485 return NULL;
|
|
2486 }
|
|
2487
|
|
2488 return umcf;
|
|
2489 }
|
|
2490
|
|
2491
|
|
2492 static char *
|
|
2493 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
2494 {
|
|
2495 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
2496
|
577
|
2497 umcf->headers_in_hash.max_size = 100;
|
509
|
2498 umcf->headers_in_hash.bucket_limit = 1;
|
|
2499 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
2500 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
2501
|
|
2502 if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
|
|
2503 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
2504 {
|
|
2505 return NGX_CONF_ERROR;
|
|
2506 }
|
|
2507
|
|
2508 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
2509 "http upstream headers_in hash size: %ui, "
|
|
2510 "max buckets per entry: %ui",
|
|
2511 umcf->headers_in_hash.hash_size,
|
|
2512 umcf->headers_in_hash.min_buckets);
|
|
2513
|
|
2514 return NGX_CONF_OK;
|
|
2515 }
|