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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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58
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9 #include <ngx_event_connect.h>
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28
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10 #include <ngx_http.h>
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11
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12
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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28
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23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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26 ngx_http_upstream_t *u);
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58
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27 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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28 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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29 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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30 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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31 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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28
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32 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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33 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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34
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58
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35 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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36 ngx_table_elt_t *h, ngx_uint_t offset);
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37 static ngx_int_t
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38 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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39 ngx_table_elt_t *h, ngx_uint_t offset);
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40 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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41 ngx_table_elt_t *h, ngx_uint_t offset);
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42 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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43 ngx_table_elt_t *h, ngx_uint_t offset);
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44 static ngx_int_t
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45 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t
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48 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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50 static ngx_int_t ngx_http_upstream_copy_content_type(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 ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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54 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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55 ngx_table_elt_t *h, ngx_uint_t offset);
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56 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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57 ngx_table_elt_t *h, ngx_uint_t offset);
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58 #if (NGX_HTTP_GZIP)
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59 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 #endif
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62
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28
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63 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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64 uintptr_t data);
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65 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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66 u_char *buf, ngx_http_log_op_t *op);
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28
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67
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68 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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69 size_t len);
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28
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70 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf);
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58
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71 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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72 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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73
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74
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75 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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76
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77 { ngx_string("Status"),
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78 ngx_http_upstream_process_header_line,
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79 offsetof(ngx_http_upstream_headers_in_t, status),
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80 /* STUB */ ngx_http_upstream_ignore_header_line, 0 },
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81
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82 { ngx_string("Content-Type"),
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83 ngx_http_upstream_process_header_line,
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84 offsetof(ngx_http_upstream_headers_in_t, content_type),
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85 ngx_http_upstream_copy_content_type, 0 },
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86
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87 { ngx_string("Content-Length"),
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88 ngx_http_upstream_process_header_line,
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89 offsetof(ngx_http_upstream_headers_in_t, content_length),
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90 ngx_http_upstream_copy_content_length, 0 },
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91
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92 { ngx_string("Date"),
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93 ngx_http_upstream_process_header_line,
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94 offsetof(ngx_http_upstream_headers_in_t, date),
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95 ngx_http_upstream_conditional_copy_header_line,
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96 offsetof(ngx_http_upstream_conf_t, pass_date) },
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97
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98 { ngx_string("Server"),
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99 ngx_http_upstream_process_header_line,
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100 offsetof(ngx_http_upstream_headers_in_t, server),
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101 ngx_http_upstream_conditional_copy_header_line,
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102 offsetof(ngx_http_upstream_conf_t, pass_server) },
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103
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104 { ngx_string("Location"),
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105 ngx_http_upstream_ignore_header_line, 0,
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106 ngx_http_upstream_rewrite_location, 0 },
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107
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108 { ngx_string("Refresh"),
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109 ngx_http_upstream_ignore_header_line, 0,
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110 ngx_http_upstream_rewrite_refresh, 0 },
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111
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112 { ngx_string("Cache-Control"),
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113 ngx_http_upstream_process_multi_header_lines,
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114 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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115 ngx_http_upstream_copy_multi_header_lines,
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116 offsetof(ngx_http_headers_out_t, cache_control) },
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117
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118 { ngx_string("Connection"),
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119 ngx_http_upstream_ignore_header_line, 0,
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120 ngx_http_upstream_ignore_header_line, 0 },
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121
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122 { ngx_string("X-Pad"),
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123 ngx_http_upstream_ignore_header_line, 0,
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124 ngx_http_upstream_ignore_header_line, 0 },
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125
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126 { ngx_string("X-Powered-By"),
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127 ngx_http_upstream_ignore_header_line, 0,
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128 ngx_http_upstream_conditional_copy_header_line,
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129 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by) },
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130
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131 { ngx_string("X-Accel-Expires"),
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132 ngx_http_upstream_process_header_line,
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133 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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134 ngx_http_upstream_conditional_copy_header_line,
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135 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires) },
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136
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137 #if (NGX_HTTP_GZIP)
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138 { ngx_string("Content-Encoding"),
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139 ngx_http_upstream_process_header_line,
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140 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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141 ngx_http_upstream_copy_content_encoding, 0 },
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142 #endif
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143
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144 { ngx_null_string, NULL, 0, NULL, 0 }
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145 };
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28
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146
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147
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148 ngx_http_module_t ngx_http_upstream_module_ctx = {
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58
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149 ngx_http_upstream_add_log_formats, /* preconfiguration */
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150 NULL, /* postconfiguration */
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151
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152 ngx_http_upstream_create_main_conf, /* create main configuration */
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153 ngx_http_core_init_main_conf, /* init main configuration */
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154
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155 NULL, /* create server configuration */
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156 NULL, /* merge server configuration */
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157
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158 NULL, /* create location configuration */
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159 NULL /* merge location configuration */
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160 };
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161
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162
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163 ngx_module_t ngx_http_upstream_module = {
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164 NGX_MODULE_V1,
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165 &ngx_http_upstream_module_ctx, /* module context */
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166 NULL, /* module directives */
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167 NGX_HTTP_MODULE, /* module type */
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168 NULL, /* init module */
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169 NULL /* init process */
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170 };
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171
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172
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173 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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174 { ngx_string("upstream_status"), 0, NULL,
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175 ngx_http_upstream_log_status_getlen,
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176 ngx_http_upstream_log_status },
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177 { ngx_null_string, 0, NULL, NULL, NULL }
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178 };
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179
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180
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181 char *ngx_http_upstream_header_errors[] = {
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182 "upstream sent invalid header",
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183 "upstream sent too long header line"
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184 };
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185
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186
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36
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187 void
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188 ngx_http_upstream_init(ngx_http_request_t *r)
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189 {
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190 ngx_connection_t *c;
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191 ngx_http_upstream_t *u;
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192 ngx_http_core_loc_conf_t *clcf;
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28
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193
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194 c = r->connection;
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195
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196 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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197 "http init upstream, client timer: %d", c->read->timer_set);
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198
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199 if (c->read->timer_set) {
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200 ngx_del_timer(c->read);
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201 }
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202
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58
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203 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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204
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205 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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206
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207 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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208
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209 if (!c->write->active) {
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210 if (ngx_add_event(c->write, NGX_WRITE_EVENT,
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211 NGX_CLEAR_EVENT) == NGX_ERROR)
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212 {
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213 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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214 return;
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215 }
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216 }
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217 }
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218
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219 u = r->upstream;
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220
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221 u->request_bufs = r->request_body->bufs;
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222
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223 if (u->conf->method == NGX_CONF_UNSET_UINT) {
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224 u->method = r->method;
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225
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226 } else {
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227 u->method = u->conf->method;
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228 }
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28
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229
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230 if (u->create_request(r) == NGX_ERROR) {
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231 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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232 return;
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233 }
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234
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235 u->peer.log = r->connection->log;
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58
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236 u->saved_log_handler = r->log_handler;
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237 r->log_handler = ngx_http_upstream_log_error;
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238
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239 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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240
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241 u->output.sendfile = r->connection->sendfile;
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242 u->output.pool = r->pool;
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243 u->output.bufs.num = 1;
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244 u->output.bufs.size = clcf->client_body_buffer_size;
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245 u->output.output_filter = ngx_chain_writer;
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246 u->output.filter_ctx = &u->writer;
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247
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248 u->writer.pool = r->pool;
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249
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250 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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50
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251 sizeof(ngx_http_upstream_state_t)) != NGX_OK)
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252 {
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253 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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254 return;
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255 }
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256
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257 u->state = ngx_array_push(&u->states);
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258 if (u->state == NULL) {
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259 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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260 return;
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261 }
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262
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263 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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264
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265 ngx_http_upstream_connect(r, u);
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266 }
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267
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268
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36
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269 static void
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270 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
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271 {
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272 ngx_http_upstream_check_broken_connection(r, r->connection->read);
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273 }
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274
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275
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276 static void
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277 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
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278 {
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279 ngx_http_upstream_check_broken_connection(r, r->connection->write);
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280 }
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281
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282
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283 static void
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284 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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285 ngx_event_t *ev)
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28
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286 {
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287 int n;
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288 char buf[1];
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289 ngx_err_t err;
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290 ngx_connection_t *c;
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291 ngx_http_upstream_t *u;
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292
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293 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, 0,
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294 "http upstream check client, write event:%d", ev->write);
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295
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296 c = r->connection;
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32
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297 u = r->upstream;
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298
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299 if (u->peer.connection == NULL) {
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300 return;
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301 }
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302
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28
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303 #if (NGX_HAVE_KQUEUE)
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304
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305 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
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306
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307 if (!ev->pending_eof) {
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308 return;
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309 }
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310
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311 ev->eof = 1;
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312
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313 if (ev->kq_errno) {
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314 ev->error = 1;
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315 }
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316
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317 if (!u->cachable && u->peer.connection) {
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318 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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319 "kevent() reported that client closed "
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320 "prematurely connection, "
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321 "so upstream connection is closed too");
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322 ngx_http_upstream_finalize_request(r, u,
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323 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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324 return;
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325 }
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326
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327 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
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328 "kevent() reported that client closed "
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329 "prematurely connection");
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330
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331 if (u->peer.connection == NULL) {
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332 ngx_http_upstream_finalize_request(r, u,
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333 NGX_HTTP_CLIENT_CLOSED_REQUEST);
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334 return;
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335 }
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336
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337 return;
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338 }
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339
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340 #endif
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341
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342 n = recv(c->fd, buf, 1, MSG_PEEK);
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343
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344 err = ngx_socket_errno;
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345
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346 /*
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347 * we do not need to disable the write event because
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348 * that event has NGX_USE_CLEAR_EVENT type
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349 */
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350
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351 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
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352 return;
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353 }
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354
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355 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
356 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
357 ngx_http_upstream_finalize_request(r, u,
|
|
|
358 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361 }
|
|
|
362
|
|
|
363 if (n > 0) {
|
|
|
364 return;
|
|
|
365 }
|
|
|
366
|
|
|
367 ev->eof = 1;
|
|
|
368
|
|
|
369 if (n == -1) {
|
|
|
370 if (err == NGX_EAGAIN) {
|
|
|
371 return;
|
|
|
372 }
|
|
|
373
|
|
|
374 ev->error = 1;
|
|
|
375
|
|
32
|
376 } else { /* n == 0 */
|
|
28
|
377 err = 0;
|
|
|
378 }
|
|
|
379
|
|
|
380 if (!u->cachable && u->peer.connection) {
|
|
|
381 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
382 "client closed prematurely connection, "
|
|
|
383 "so upstream connection is closed too");
|
|
|
384 ngx_http_upstream_finalize_request(r, u,
|
|
|
385 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
386 return;
|
|
|
387 }
|
|
|
388
|
|
|
389 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
390 "client closed prematurely connection");
|
|
|
391
|
|
|
392 if (u->peer.connection == NULL) {
|
|
|
393 ngx_http_upstream_finalize_request(r, u,
|
|
|
394 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
395 return;
|
|
|
396 }
|
|
|
397 }
|
|
|
398
|
|
|
399
|
|
36
|
400 static void
|
|
|
401 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
402 {
|
|
|
403 ngx_int_t rc;
|
|
|
404 ngx_connection_t *c;
|
|
|
405
|
|
32
|
406 r->connection->log->action = "connecting to upstream";
|
|
28
|
407
|
|
|
408 r->connection->single_connection = 0;
|
|
|
409
|
|
|
410 rc = ngx_event_connect_peer(&u->peer);
|
|
|
411
|
|
|
412 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
413 "http upstream connect: %i", rc);
|
|
|
414
|
|
|
415 if (rc == NGX_ERROR) {
|
|
|
416 ngx_http_upstream_finalize_request(r, u,
|
|
|
417 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
418 return;
|
|
|
419 }
|
|
|
420
|
|
|
421 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
|
422
|
|
|
423 if (rc == NGX_CONNECT_ERROR) {
|
|
|
424 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
425 return;
|
|
|
426 }
|
|
|
427
|
|
|
428 c = u->peer.connection;
|
|
|
429
|
|
|
430 c->data = r;
|
|
58
|
431 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
432 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
433
|
|
|
434 c->sendfile = r->connection->sendfile;
|
|
|
435
|
|
|
436 c->pool = r->pool;
|
|
|
437 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
438
|
|
|
439 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
440
|
|
|
441 u->writer.out = NULL;
|
|
|
442 u->writer.last = &u->writer.out;
|
|
|
443 u->writer.connection = c;
|
|
|
444 u->writer.limit = 0;
|
|
|
445
|
|
|
446 if (u->request_sent) {
|
|
58
|
447 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
448 ngx_http_upstream_finalize_request(r, u,
|
|
|
449 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
450 return;
|
|
|
451 }
|
|
28
|
452 }
|
|
|
453
|
|
58
|
454 if (r->request_body) {
|
|
|
455 if (r->request_body->temp_file && r->main == NULL) {
|
|
|
456
|
|
|
457 /*
|
|
|
458 * the r->request_body->buf can be reused for one request only,
|
|
|
459 * the subrequests should allocate their own temporay bufs
|
|
|
460 */
|
|
28
|
461
|
|
50
|
462 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
463 if (u->output.free == NULL) {
|
|
28
|
464 ngx_http_upstream_finalize_request(r, u,
|
|
|
465 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
466 return;
|
|
|
467 }
|
|
|
468
|
|
|
469 u->output.free->buf = r->request_body->buf;
|
|
|
470 u->output.free->next = NULL;
|
|
|
471 u->output.allocated = 1;
|
|
|
472
|
|
|
473 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
474 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
475 r->request_body->buf->tag = u->output.tag;
|
|
|
476 }
|
|
|
477 }
|
|
|
478
|
|
|
479 u->request_sent = 0;
|
|
|
480
|
|
|
481 if (rc == NGX_AGAIN) {
|
|
|
482 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
483 return;
|
|
|
484 }
|
|
|
485
|
|
|
486 /* rc == NGX_OK */
|
|
|
487
|
|
|
488 ngx_http_upstream_send_request(r, u);
|
|
|
489 }
|
|
|
490
|
|
|
491
|
|
58
|
492 static ngx_int_t
|
|
36
|
493 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
494 {
|
|
|
495 ngx_chain_t *cl;
|
|
|
496
|
|
58
|
497 if (u->reinit_request(r) != NGX_OK) {
|
|
|
498 return NGX_ERROR;
|
|
|
499 }
|
|
|
500
|
|
|
501 ngx_memzero(&r->upstream->headers_in,
|
|
|
502 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
503
|
|
|
504 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
505 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
|
506 {
|
|
|
507 return NGX_ERROR;
|
|
28
|
508 }
|
|
|
509
|
|
|
510 /* reinit the request chain */
|
|
|
511
|
|
58
|
512 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
513 cl->buf->pos = cl->buf->start;
|
|
|
514 cl->buf->file_pos = 0;
|
|
|
515 }
|
|
|
516
|
|
58
|
517 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
518
|
|
|
519 if (r->request_body) {
|
|
|
520 if (r->request_body->temp_file && r->main && u->output.buf) {
|
|
|
521
|
|
|
522 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
523 if (u->output.free == NULL) {
|
|
|
524 return NGX_ERROR;
|
|
|
525 }
|
|
|
526
|
|
|
527 u->output.free->buf = u->output.buf;
|
|
|
528 u->output.free->next = NULL;
|
|
|
529
|
|
|
530 u->output.buf->pos = u->output.buf->start;
|
|
|
531 u->output.buf->last = u->output.buf->start;
|
|
|
532 }
|
|
|
533 }
|
|
28
|
534
|
|
|
535 u->output.buf = NULL;
|
|
|
536 u->output.in = NULL;
|
|
|
537 u->output.busy = NULL;
|
|
|
538
|
|
|
539 /* reinit u->header_in buffer */
|
|
|
540
|
|
|
541 #if 0
|
|
|
542 if (u->cache) {
|
|
|
543 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
|
|
|
544 u->header_in.last = u->header_in.pos;
|
|
|
545
|
|
|
546 } else {
|
|
|
547 u->header_in.pos = u->header_in.start;
|
|
|
548 u->header_in.last = u->header_in.start;
|
|
|
549 }
|
|
|
550 #else
|
|
58
|
551
|
|
28
|
552 u->header_in.pos = u->header_in.start;
|
|
|
553 u->header_in.last = u->header_in.start;
|
|
58
|
554
|
|
28
|
555 #endif
|
|
|
556
|
|
|
557 /* add one more state */
|
|
|
558
|
|
50
|
559 u->state = ngx_array_push(&u->states);
|
|
|
560 if (u->state == NULL) {
|
|
58
|
561 return NGX_ERROR;
|
|
28
|
562 }
|
|
|
563
|
|
|
564 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
565
|
|
|
566 return NGX_OK;
|
|
28
|
567 }
|
|
|
568
|
|
|
569
|
|
36
|
570 static void
|
|
|
571 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
572 {
|
|
32
|
573 int rc;
|
|
|
574 ngx_connection_t *c;
|
|
28
|
575
|
|
|
576 c = u->peer.connection;
|
|
|
577
|
|
|
578 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
579 "http upstream send request");
|
|
|
580
|
|
|
581 #if (NGX_HAVE_KQUEUE)
|
|
|
582
|
|
|
583 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
584 && !u->request_sent
|
|
|
585 && c->write->pending_eof)
|
|
|
586 {
|
|
|
587 ngx_log_error(NGX_LOG_ERR, c->log, c->write->kq_errno,
|
|
|
588 "connect() failed");
|
|
|
589
|
|
|
590 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
591 return;
|
|
|
592 }
|
|
|
593
|
|
|
594 #endif
|
|
|
595
|
|
32
|
596 c->log->action = "sending request to upstream";
|
|
28
|
597
|
|
58
|
598 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
599
|
|
|
600 u->request_sent = 1;
|
|
|
601
|
|
|
602 if (rc == NGX_ERROR) {
|
|
|
603 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
604 return;
|
|
|
605 }
|
|
|
606
|
|
|
607 if (c->write->timer_set) {
|
|
|
608 ngx_del_timer(c->write);
|
|
|
609 }
|
|
|
610
|
|
|
611 if (rc == NGX_AGAIN) {
|
|
|
612 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
613
|
|
|
614 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
615 {
|
|
|
616 ngx_http_upstream_finalize_request(r, u,
|
|
|
617 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
618 return;
|
|
|
619 }
|
|
|
620
|
|
|
621 return;
|
|
|
622 }
|
|
|
623
|
|
|
624 /* rc == NGX_OK */
|
|
|
625
|
|
|
626 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
627 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
628 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
629 ngx_tcp_push_n " failed");
|
|
|
630 ngx_http_upstream_finalize_request(r, u,
|
|
|
631 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
632 return;
|
|
|
633 }
|
|
|
634
|
|
|
635 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
636 return;
|
|
|
637 }
|
|
|
638
|
|
|
639 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
640
|
|
|
641 #if 1
|
|
|
642 if (c->read->ready) {
|
|
|
643
|
|
|
644 /* post aio operation */
|
|
|
645
|
|
|
646 /*
|
|
|
647 * TODO comment
|
|
|
648 * although we can post aio operation just in the end
|
|
|
649 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
650 * it's better to do here because we postpone header buffer allocation
|
|
|
651 */
|
|
|
652
|
|
|
653 ngx_http_upstream_process_header(c->read);
|
|
|
654 return;
|
|
|
655 }
|
|
|
656 #endif
|
|
|
657
|
|
58
|
658 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
659
|
|
58
|
660 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
661 ngx_http_upstream_finalize_request(r, u,
|
|
|
662 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
663 return;
|
|
|
664 }
|
|
|
665 }
|
|
|
666
|
|
|
667
|
|
36
|
668 static void
|
|
|
669 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
670 {
|
|
|
671 ngx_connection_t *c;
|
|
|
672 ngx_http_request_t *r;
|
|
|
673 ngx_http_upstream_t *u;
|
|
|
674
|
|
|
675 c = wev->data;
|
|
|
676 r = c->data;
|
|
|
677 u = r->upstream;
|
|
|
678
|
|
|
679 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
680 "http upstream send request handler");
|
|
|
681
|
|
|
682 if (wev->timedout) {
|
|
32
|
683 c->log->action = "sending request to upstream";
|
|
28
|
684 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
685 return;
|
|
|
686 }
|
|
|
687
|
|
|
688 if (r->connection->write->eof && (!u->cachable || !u->request_sent)) {
|
|
|
689 ngx_http_upstream_finalize_request(r, u,
|
|
|
690 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
691 return;
|
|
|
692 }
|
|
|
693
|
|
|
694 ngx_http_upstream_send_request(r, u);
|
|
|
695 }
|
|
|
696
|
|
|
697
|
|
36
|
698 static void
|
|
|
699 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
700 {
|
|
36
|
701 ssize_t n;
|
|
|
702 ngx_int_t rc;
|
|
|
703 ngx_uint_t i;
|
|
|
704 ngx_connection_t *c;
|
|
|
705 ngx_http_request_t *r;
|
|
|
706 ngx_http_upstream_t *u;
|
|
|
707 ngx_http_err_page_t *err_page;
|
|
|
708 ngx_http_core_loc_conf_t *clcf;
|
|
28
|
709
|
|
|
710 c = rev->data;
|
|
|
711 r = c->data;
|
|
|
712 u = r->upstream;
|
|
|
713
|
|
|
714 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
715 "http upstream process header");
|
|
28
|
716
|
|
32
|
717 c->log->action = "reading response header from upstream";
|
|
28
|
718
|
|
|
719 if (rev->timedout) {
|
|
|
720 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
721 return;
|
|
|
722 }
|
|
|
723
|
|
|
724 if (u->header_in.start == NULL) {
|
|
|
725 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
726 if (u->header_in.start == NULL) {
|
|
|
727 ngx_http_upstream_finalize_request(r, u,
|
|
|
728 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
729 return;
|
|
|
730 }
|
|
|
731
|
|
|
732 u->header_in.pos = u->header_in.start;
|
|
|
733 u->header_in.last = u->header_in.start;
|
|
32
|
734 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
735 u->header_in.temporary = 1;
|
|
|
736
|
|
|
737 u->header_in.tag = u->output.tag;
|
|
|
738
|
|
58
|
739 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
740 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
741 {
|
|
|
742 ngx_http_upstream_finalize_request(r, u,
|
|
|
743 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
744 return;
|
|
|
745 }
|
|
|
746
|
|
28
|
747 #if 0
|
|
|
748 if (u->cache) {
|
|
|
749 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
750 u->header_in.last = u->header_in.pos;
|
|
|
751 }
|
|
|
752 #endif
|
|
|
753 }
|
|
|
754
|
|
|
755 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
756 u->header_in.end - u->header_in.last);
|
|
|
757
|
|
|
758 if (n == NGX_AGAIN) {
|
|
|
759 #if 0
|
|
|
760 ngx_add_timer(rev, u->read_timeout);
|
|
|
761 #endif
|
|
|
762
|
|
|
763 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
764 ngx_http_upstream_finalize_request(r, u,
|
|
|
765 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
766 return;
|
|
|
767 }
|
|
|
768
|
|
|
769 return;
|
|
|
770 }
|
|
|
771
|
|
|
772 if (n == 0) {
|
|
|
773 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
774 "upstream prematurely closed connection");
|
|
|
775 }
|
|
|
776
|
|
|
777 if (n == NGX_ERROR || n == 0) {
|
|
|
778 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
779 return;
|
|
|
780 }
|
|
|
781
|
|
|
782 u->header_in.last += n;
|
|
|
783
|
|
|
784 #if 0
|
|
|
785 u->valid_header_in = 0;
|
|
|
786
|
|
|
787 u->peer.cached = 0;
|
|
|
788 #endif
|
|
|
789
|
|
|
790 rc = u->process_header(r);
|
|
|
791
|
|
|
792 if (rc == NGX_AGAIN) {
|
|
|
793 #if 0
|
|
|
794 ngx_add_timer(rev, u->read_timeout);
|
|
|
795 #endif
|
|
|
796
|
|
58
|
797 if (u->header_in.pos == u->header_in.end) {
|
|
28
|
798 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
799 "upstream sent too big header");
|
|
|
800
|
|
|
801 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
802 return;
|
|
|
803 }
|
|
|
804
|
|
|
805 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
806 ngx_http_upstream_finalize_request(r, u,
|
|
|
807 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
808 return;
|
|
|
809 }
|
|
|
810
|
|
|
811 return;
|
|
|
812 }
|
|
|
813
|
|
|
814 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
815 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
816 return;
|
|
|
817 }
|
|
|
818
|
|
|
819 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
820 ngx_http_upstream_finalize_request(r, u,
|
|
|
821 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
822 return;
|
|
|
823 }
|
|
|
824
|
|
|
825 /* rc == NGX_OK */
|
|
|
826
|
|
58
|
827 if (r->headers_out.status == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
828
|
|
|
829 if (u->peer.tries > 1
|
|
|
830 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
831 {
|
|
|
832 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
833 return;
|
|
|
834 }
|
|
|
835
|
|
|
836 #if (NGX_HTTP_CACHE)
|
|
|
837
|
|
|
838 if (u->peer.tries == 0
|
|
|
839 && u->stale
|
|
|
840 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
841 {
|
|
|
842 ngx_http_upstream_finalize_request(r, u,
|
|
|
843 ngx_http_send_cached_response(r));
|
|
|
844 return;
|
|
|
845 }
|
|
|
846
|
|
|
847 #endif
|
|
|
848 }
|
|
|
849
|
|
|
850 if (r->headers_out.status == NGX_HTTP_NOT_FOUND
|
|
|
851 && u->peer.tries > 1
|
|
|
852 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
853 {
|
|
|
854 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
855 return;
|
|
|
856 }
|
|
|
857
|
|
|
858
|
|
36
|
859 if (r->headers_out.status >= NGX_HTTP_BAD_REQUEST
|
|
|
860 && u->conf->redirect_errors
|
|
|
861 && r->err_ctx == NULL)
|
|
|
862 {
|
|
|
863 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
864
|
|
|
865 if (clcf->error_pages) {
|
|
|
866
|
|
|
867 err_page = clcf->error_pages->elts;
|
|
|
868 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
869 if (err_page[i].status == (ngx_int_t) r->headers_out.status) {
|
|
|
870 ngx_http_upstream_finalize_request(r, u,
|
|
|
871 r->headers_out.status);
|
|
|
872 return;
|
|
|
873 }
|
|
|
874 }
|
|
|
875 }
|
|
|
876 }
|
|
|
877
|
|
28
|
878 ngx_http_upstream_send_response(r, u);
|
|
|
879 }
|
|
|
880
|
|
|
881
|
|
36
|
882 static void
|
|
|
883 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
884 {
|
|
58
|
885 ngx_int_t rc;
|
|
|
886 ngx_uint_t i, key;
|
|
|
887 ngx_list_part_t *part;
|
|
|
888 ngx_table_elt_t *h;
|
|
|
889 ngx_event_pipe_t *p;
|
|
|
890 ngx_http_core_loc_conf_t *clcf;
|
|
|
891 ngx_http_upstream_header_t *hh;
|
|
|
892 ngx_http_upstream_main_conf_t *umcf;
|
|
|
893
|
|
|
894 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
895 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
896
|
|
|
897 part = &r->upstream->headers_in.headers.part;
|
|
|
898 h = part->elts;
|
|
|
899
|
|
|
900 for (i = 0; /* void */; i++) {
|
|
28
|
901
|
|
58
|
902 if (i >= part->nelts) {
|
|
|
903 if (part->next == NULL) {
|
|
|
904 break;
|
|
|
905 }
|
|
|
906
|
|
|
907 part = part->next;
|
|
|
908 h = part->elts;
|
|
|
909 i = 0;
|
|
|
910 }
|
|
|
911
|
|
|
912 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
913
|
|
|
914 if (hh[key].name.len == h[i].key.len
|
|
|
915 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
916 {
|
|
|
917 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
918 ngx_http_upstream_finalize_request(r, u,
|
|
|
919 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
920 return;
|
|
|
921 }
|
|
|
922
|
|
|
923 continue;
|
|
|
924 }
|
|
|
925
|
|
|
926 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
927 ngx_http_upstream_finalize_request(r, u,
|
|
|
928 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
929 return;
|
|
|
930 }
|
|
|
931 }
|
|
|
932
|
|
|
933 rc = ngx_http_send_header(r);
|
|
28
|
934
|
|
34
|
935 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
936 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
937 return;
|
|
|
938 }
|
|
|
939
|
|
|
940 u->header_sent = 1;
|
|
|
941
|
|
|
942 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
943
|
|
|
944 #if 0
|
|
|
945
|
|
|
946 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
947 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
948 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
949 ngx_close_file_n " \"%s\" failed",
|
|
|
950 u->cache->ctx.file.name.data);
|
|
|
951 }
|
|
|
952 }
|
|
|
953
|
|
|
954 if (u->cachable) {
|
|
|
955 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
956
|
|
|
957 header->expires = u->cache->ctx.expires;
|
|
|
958 header->last_modified = u->cache->ctx.last_modified;
|
|
|
959 header->date = u->cache->ctx.date;
|
|
|
960 header->length = r->headers_out.content_length_n;
|
|
|
961 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
962
|
|
|
963 header->key_len = u->cache->ctx.key0.len;
|
|
|
964 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
965 header->key[header->key_len] = LF;
|
|
|
966 }
|
|
|
967
|
|
|
968 #endif
|
|
|
969
|
|
|
970 p = &u->pipe;
|
|
|
971
|
|
|
972 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
973 p->output_ctx = r;
|
|
|
974 p->tag = u->output.tag;
|
|
|
975 p->bufs = u->conf->bufs;
|
|
|
976 p->busy_size = u->conf->busy_buffers_size;
|
|
|
977 p->upstream = u->peer.connection;
|
|
|
978 p->downstream = r->connection;
|
|
|
979 p->pool = r->pool;
|
|
|
980 p->log = r->connection->log;
|
|
|
981
|
|
|
982 p->cachable = u->cachable;
|
|
|
983
|
|
50
|
984 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
985 if (p->temp_file == NULL) {
|
|
28
|
986 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
987 return;
|
|
|
988 }
|
|
|
989
|
|
|
990 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
991 p->temp_file->file.log = r->connection->log;
|
|
|
992 p->temp_file->path = u->conf->temp_path;
|
|
|
993 p->temp_file->pool = r->pool;
|
|
|
994
|
|
|
995 if (u->cachable) {
|
|
|
996 p->temp_file->persistent = 1;
|
|
|
997 } else {
|
|
|
998 p->temp_file->warn = "an upstream response is buffered "
|
|
|
999 "to a temporary file";
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1003 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1004
|
|
50
|
1005 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1006 if (p->preread_bufs == NULL) {
|
|
28
|
1007 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1008 return;
|
|
|
1009 }
|
|
|
1010 p->preread_bufs->buf = &u->header_in;
|
|
|
1011 p->preread_bufs->next = NULL;
|
|
|
1012 u->header_in.recycled = 1;
|
|
|
1013
|
|
|
1014 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
1015
|
|
|
1016 if (u->cachable) {
|
|
|
1017 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1018 if (p->buf_to_file == NULL) {
|
|
|
1019 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1020 return;
|
|
|
1021 }
|
|
|
1022 p->buf_to_file->pos = u->header_in.start;
|
|
|
1023 p->buf_to_file->last = u->header_in.pos;
|
|
|
1024 p->buf_to_file->temporary = 1;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1028 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1029 p->single_buf = 1;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1033 p->free_bufs = 1;
|
|
|
1034
|
|
|
1035 /*
|
|
|
1036 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
1037 * as though these bytes were read
|
|
|
1038 */
|
|
|
1039 u->header_in.last = u->header_in.pos;
|
|
|
1040
|
|
|
1041 if (u->conf->cyclic_temp_file) {
|
|
|
1042
|
|
|
1043 /*
|
|
|
1044 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1045 * because the writing a new data may interfere with sendfile()
|
|
|
1046 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1047 */
|
|
|
1048
|
|
|
1049 p->cyclic_temp_file = 1;
|
|
|
1050 r->connection->sendfile = 0;
|
|
|
1051
|
|
|
1052 } else {
|
|
|
1053 p->cyclic_temp_file = 0;
|
|
|
1054 }
|
|
|
1055
|
|
|
1056 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1057
|
|
|
1058 p->read_timeout = u->conf->read_timeout;
|
|
|
1059 p->send_timeout = clcf->send_timeout;
|
|
|
1060 p->send_lowat = clcf->send_lowat;
|
|
|
1061
|
|
58
|
1062 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1063 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1064
|
|
|
1065 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1066 }
|
|
|
1067
|
|
|
1068
|
|
36
|
1069 static void
|
|
58
|
1070 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1071 {
|
|
|
1072 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1073 }
|
|
|
1074
|
|
|
1075
|
|
|
1076 static void
|
|
36
|
1077 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1078 {
|
|
58
|
1079 ngx_event_pipe_t *p;
|
|
28
|
1080 ngx_connection_t *c;
|
|
|
1081 ngx_http_request_t *r;
|
|
|
1082 ngx_http_upstream_t *u;
|
|
|
1083
|
|
|
1084 c = ev->data;
|
|
|
1085 r = c->data;
|
|
|
1086 u = r->upstream;
|
|
|
1087
|
|
|
1088 if (ev->write) {
|
|
32
|
1089 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1090 "http upstream process downstream");
|
|
|
1091 c->log->action = "sending to client";
|
|
28
|
1092
|
|
|
1093 } else {
|
|
32
|
1094 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1095 "http upstream process upstream");
|
|
|
1096 c->log->action = "reading upstream";
|
|
28
|
1097 }
|
|
|
1098
|
|
|
1099 p = &u->pipe;
|
|
|
1100
|
|
|
1101 if (ev->timedout) {
|
|
|
1102 if (ev->write) {
|
|
|
1103 p->downstream_error = 1;
|
|
|
1104 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1105 "client timed out");
|
|
|
1106
|
|
|
1107 } else {
|
|
|
1108 p->upstream_error = 1;
|
|
|
1109 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1110 "upstream timed out");
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 } else {
|
|
|
1114 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1115 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1116 return;
|
|
|
1117 }
|
|
|
1118 }
|
|
|
1119
|
|
|
1120 if (u->peer.connection) {
|
|
|
1121
|
|
|
1122 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1123
|
|
|
1124 if (p->upstream_done && u->cachable) {
|
|
|
1125 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1126 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1127 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1128 return;
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 } else if (p->upstream_eof && u->cachable) {
|
|
|
1132
|
|
|
1133 /* TODO: check length & update cache */
|
|
|
1134
|
|
|
1135 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1136 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1137 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1138 return;
|
|
|
1139 }
|
|
|
1140 }
|
|
|
1141
|
|
|
1142 #endif
|
|
|
1143
|
|
|
1144 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1145 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1146 "http upstream exit: %p", p->out);
|
|
28
|
1147 #if 0
|
|
|
1148 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1149 #endif
|
|
|
1150 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1151 return;
|
|
|
1152 }
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 if (p->downstream_error) {
|
|
32
|
1156 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1157 "http upstream downstream error");
|
|
28
|
1158
|
|
|
1159 if (!u->cachable && u->peer.connection) {
|
|
|
1160 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1161 }
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164
|
|
|
1165
|
|
36
|
1166 static void
|
|
|
1167 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1168 {
|
|
|
1169 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1170 "http upstream dummy handler");
|
|
|
1171 }
|
|
|
1172
|
|
|
1173
|
|
36
|
1174 static void
|
|
|
1175 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1176 ngx_uint_t ft_type)
|
|
28
|
1177 {
|
|
|
1178 ngx_uint_t status;
|
|
|
1179
|
|
|
1180 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1181 "http next upstream, %xD", ft_type);
|
|
|
1182
|
|
|
1183 #if 0
|
|
|
1184 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1185 #endif
|
|
|
1186
|
|
|
1187 if (ft_type != NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1188 ngx_event_connect_peer_failed(&u->peer);
|
|
|
1189 }
|
|
|
1190
|
|
|
1191 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1192 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1193 "upstream timed out");
|
|
|
1194 }
|
|
|
1195
|
|
|
1196 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1197 status = 0;
|
|
|
1198
|
|
|
1199 } else {
|
|
|
1200 switch(ft_type) {
|
|
|
1201
|
|
|
1202 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1203 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1204 break;
|
|
|
1205
|
|
|
1206 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1207 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1208 break;
|
|
|
1209
|
|
|
1210 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1211 status = NGX_HTTP_NOT_FOUND;
|
|
|
1212 break;
|
|
|
1213
|
|
|
1214 /*
|
|
|
1215 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1216 * never reach here
|
|
|
1217 */
|
|
|
1218
|
|
|
1219 default:
|
|
|
1220 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1221 }
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 if (r->connection->write->eof) {
|
|
|
1225 ngx_http_upstream_finalize_request(r, u,
|
|
|
1226 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1227 return;
|
|
|
1228 }
|
|
|
1229
|
|
|
1230 if (status) {
|
|
|
1231 u->state->status = status;
|
|
|
1232
|
|
|
1233 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type))
|
|
|
1234 {
|
|
|
1235
|
|
|
1236 #if (NGX_HTTP_CACHE)
|
|
|
1237
|
|
|
1238 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1239 ngx_http_upstream_finalize_request(r, u,
|
|
32
|
1240 ngx_http_send_cached_response(r));
|
|
28
|
1241 return;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 #endif
|
|
|
1245
|
|
|
1246 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1247 return;
|
|
|
1248 }
|
|
|
1249 }
|
|
|
1250
|
|
|
1251 if (u->peer.connection) {
|
|
|
1252 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1253 "close http upstream connection: %d",
|
|
|
1254 u->peer.connection->fd);
|
|
|
1255
|
|
|
1256 ngx_close_connection(u->peer.connection);
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 #if 0
|
|
|
1260 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1261 ngx_http_upstream_busy_lock(p);
|
|
|
1262 return;
|
|
|
1263 }
|
|
|
1264 #endif
|
|
|
1265
|
|
|
1266 ngx_http_upstream_connect(r, u);
|
|
|
1267 }
|
|
|
1268
|
|
|
1269
|
|
36
|
1270 static void
|
|
|
1271 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1272 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1273 {
|
|
32
|
1274 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1275 "finalize http upstream request: %i", rc);
|
|
28
|
1276
|
|
|
1277 u->finalize_request(r, rc);
|
|
|
1278
|
|
|
1279 if (u->peer.connection) {
|
|
|
1280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1281 "close http upstream connection: %d",
|
|
|
1282 u->peer.connection->fd);
|
|
|
1283
|
|
|
1284 ngx_close_connection(u->peer.connection);
|
|
|
1285 }
|
|
|
1286
|
|
32
|
1287 u->peer.connection = NULL;
|
|
|
1288
|
|
28
|
1289 if (u->header_sent
|
|
|
1290 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
|
1291 {
|
|
|
1292 rc = 0;
|
|
|
1293 }
|
|
|
1294
|
|
30
|
1295 if (u->pipe.temp_file) {
|
|
28
|
1296 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1297 "http upstream temp fd: %d",
|
|
|
1298 u->pipe.temp_file->file.fd);
|
|
|
1299 }
|
|
|
1300
|
|
|
1301 #if 0
|
|
|
1302 if (u->cache) {
|
|
|
1303 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1304 "http upstream cache fd: %d",
|
|
28
|
1305 u->cache->ctx.file.fd);
|
|
|
1306 }
|
|
|
1307 #endif
|
|
|
1308
|
|
58
|
1309 r->log_handler = u->saved_log_handler;
|
|
32
|
1310 r->connection->log->action = "sending to client";
|
|
|
1311
|
|
28
|
1312 if (rc == 0 && r->main == NULL) {
|
|
|
1313 rc = ngx_http_send_last(r);
|
|
|
1314 }
|
|
|
1315
|
|
|
1316 ngx_http_finalize_request(r, rc);
|
|
|
1317 }
|
|
|
1318
|
|
|
1319
|
|
58
|
1320 static ngx_int_t
|
|
|
1321 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1322 ngx_uint_t offset)
|
|
|
1323 {
|
|
|
1324 ngx_table_elt_t **ph;
|
|
|
1325
|
|
|
1326 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1327
|
|
|
1328 if (*ph == NULL) {
|
|
|
1329 *ph = h;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 return NGX_OK;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335
|
|
|
1336 static ngx_int_t
|
|
|
1337 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
1338 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1339 {
|
|
|
1340 ngx_array_t *pa;
|
|
|
1341 ngx_table_elt_t **ph;
|
|
|
1342
|
|
|
1343 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
1344
|
|
|
1345 if (pa->elts == NULL) {
|
|
|
1346 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1347 {
|
|
|
1348 return NGX_ERROR;
|
|
|
1349 }
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 ph = ngx_array_push(pa);
|
|
|
1353 if (ph == NULL) {
|
|
|
1354 return NGX_ERROR;
|
|
|
1355 }
|
|
|
1356
|
|
|
1357 *ph = h;
|
|
|
1358
|
|
|
1359 return NGX_OK;
|
|
|
1360 }
|
|
|
1361
|
|
|
1362
|
|
|
1363 static ngx_int_t
|
|
|
1364 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1365 ngx_uint_t offset)
|
|
|
1366 {
|
|
|
1367 return NGX_OK;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370
|
|
|
1371 static ngx_int_t
|
|
|
1372 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1373 ngx_uint_t offset)
|
|
|
1374 {
|
|
|
1375 ngx_table_elt_t *ho;
|
|
|
1376
|
|
|
1377 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1378 if (ho == NULL) {
|
|
|
1379 return NGX_ERROR;
|
|
|
1380 }
|
|
|
1381
|
|
|
1382 *ho = *h;
|
|
|
1383
|
|
|
1384 return NGX_OK;
|
|
|
1385 }
|
|
|
1386
|
|
|
1387
|
|
|
1388 static ngx_int_t
|
|
|
1389 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
1390 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1391 {
|
|
|
1392 ngx_flag_t *f;
|
|
|
1393 ngx_table_elt_t *ho;
|
|
|
1394
|
|
|
1395 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
1396
|
|
|
1397 if (*f == 0) {
|
|
|
1398 return NGX_OK;
|
|
|
1399 }
|
|
|
1400
|
|
|
1401 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1402 if (ho == NULL) {
|
|
|
1403 return NGX_ERROR;
|
|
|
1404 }
|
|
|
1405
|
|
|
1406 *ho = *h;
|
|
|
1407
|
|
|
1408 return NGX_OK;
|
|
|
1409 }
|
|
|
1410
|
|
|
1411
|
|
|
1412 static ngx_int_t
|
|
|
1413 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
1414 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1415 {
|
|
|
1416 ngx_array_t *pa;
|
|
|
1417 ngx_table_elt_t *ho, **ph;
|
|
|
1418
|
|
|
1419 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
1420
|
|
|
1421 if (pa->elts == NULL) {
|
|
|
1422 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1423 {
|
|
|
1424 return NGX_ERROR;
|
|
|
1425 }
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 ph = ngx_array_push(pa);
|
|
|
1429 if (ph == NULL) {
|
|
|
1430 return NGX_ERROR;
|
|
|
1431 }
|
|
|
1432
|
|
|
1433 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1434 if (ho == NULL) {
|
|
|
1435 return NGX_ERROR;
|
|
|
1436 }
|
|
|
1437
|
|
|
1438 *ho = *h;
|
|
|
1439 *ph = ho;
|
|
|
1440
|
|
|
1441 return NGX_OK;
|
|
|
1442 }
|
|
|
1443
|
|
|
1444
|
|
|
1445 static ngx_int_t
|
|
|
1446 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1447 ngx_uint_t offset)
|
|
|
1448 {
|
|
|
1449 r->headers_out.content_type = h->value;
|
|
|
1450
|
|
|
1451 return NGX_OK;
|
|
|
1452 }
|
|
|
1453
|
|
|
1454
|
|
|
1455 static ngx_int_t
|
|
|
1456 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1457 ngx_uint_t offset)
|
|
|
1458 {
|
|
|
1459 ngx_table_elt_t *ho;
|
|
|
1460
|
|
|
1461 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1462 if (ho == NULL) {
|
|
|
1463 return NGX_ERROR;
|
|
|
1464 }
|
|
|
1465
|
|
|
1466 *ho = *h;
|
|
|
1467
|
|
|
1468 r->headers_out.content_length = ho;
|
|
|
1469 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
1470
|
|
|
1471 return NGX_OK;
|
|
|
1472 }
|
|
|
1473
|
|
|
1474
|
|
|
1475 static ngx_int_t
|
|
|
1476 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1477 ngx_uint_t offset)
|
|
|
1478 {
|
|
|
1479 ngx_int_t rc;
|
|
|
1480 ngx_table_elt_t *ho;
|
|
|
1481
|
|
|
1482 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1483 if (ho == NULL) {
|
|
|
1484 return NGX_ERROR;
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 *ho = *h;
|
|
|
1488
|
|
|
1489 if (r->upstream->rewrite_redirect) {
|
|
|
1490 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
1491
|
|
|
1492 if (rc == NGX_OK) {
|
|
|
1493 r->headers_out.location = ho;
|
|
|
1494
|
|
|
1495 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1496 "rewritten location: \"%V\"", &ho->value);
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 return rc;
|
|
|
1500 }
|
|
|
1501
|
|
|
1502 /*
|
|
|
1503 * we do not set r->headers_out.location here to avoid the handling
|
|
|
1504 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
1505 */
|
|
|
1506
|
|
|
1507 return NGX_OK;
|
|
|
1508 }
|
|
|
1509
|
|
|
1510
|
|
|
1511 static ngx_int_t
|
|
|
1512 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1513 ngx_uint_t offset)
|
|
|
1514 {
|
|
|
1515 u_char *p;
|
|
|
1516 ngx_int_t rc;
|
|
|
1517 ngx_table_elt_t *ho;
|
|
|
1518
|
|
|
1519 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1520 if (ho == NULL) {
|
|
|
1521 return NGX_ERROR;
|
|
|
1522 }
|
|
|
1523
|
|
|
1524 *ho = *h;
|
|
|
1525
|
|
|
1526 if (r->upstream->rewrite_redirect) {
|
|
|
1527
|
|
|
1528 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
1529
|
|
|
1530 if (p) {
|
|
|
1531 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
1532
|
|
|
1533 } else {
|
|
|
1534 return NGX_OK;
|
|
|
1535 }
|
|
|
1536
|
|
|
1537 #if (NGX_DEBUG)
|
|
|
1538 if (rc == NGX_OK) {
|
|
|
1539 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1540 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
1541 }
|
|
|
1542 #endif
|
|
|
1543
|
|
|
1544 return rc;
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 return NGX_OK;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550
|
|
|
1551 #if (NGX_HTTP_GZIP)
|
|
|
1552
|
|
|
1553 static ngx_int_t
|
|
|
1554 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
1555 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1556 {
|
|
|
1557 ngx_table_elt_t *ho;
|
|
|
1558
|
|
|
1559 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1560 if (ho == NULL) {
|
|
|
1561 return NGX_ERROR;
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 *ho = *h;
|
|
|
1565
|
|
|
1566 r->headers_out.content_encoding = ho;
|
|
|
1567
|
|
|
1568 return NGX_OK;
|
|
|
1569 }
|
|
|
1570
|
|
|
1571 #endif
|
|
|
1572
|
|
|
1573
|
|
36
|
1574 static size_t
|
|
|
1575 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
1576 {
|
|
|
1577 if (r->upstream) {
|
|
|
1578 return r->upstream->states.nelts * (3 + 2);
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 return 1;
|
|
|
1582 }
|
|
|
1583
|
|
|
1584
|
|
36
|
1585 static u_char *
|
|
|
1586 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1587 ngx_http_log_op_t *op)
|
|
28
|
1588 {
|
|
|
1589 ngx_uint_t i;
|
|
|
1590 ngx_http_upstream_t *u;
|
|
|
1591 ngx_http_upstream_state_t *state;
|
|
|
1592
|
|
|
1593 u = r->upstream;
|
|
|
1594
|
|
|
1595 if (u == NULL) {
|
|
|
1596 *buf = '-';
|
|
|
1597 return buf + 1;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 i = 0;
|
|
|
1601 state = u->states.elts;
|
|
|
1602
|
|
|
1603 for ( ;; ) {
|
|
|
1604 if (state[i].status == 0) {
|
|
|
1605 *buf++ = '-';
|
|
|
1606
|
|
|
1607 } else {
|
|
|
1608 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1609 }
|
|
|
1610
|
|
|
1611 if (++i == u->states.nelts) {
|
|
|
1612 return buf;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 *buf++ = ',';
|
|
|
1616 *buf++ = ' ';
|
|
|
1617 }
|
|
|
1618 }
|
|
|
1619
|
|
|
1620
|
|
58
|
1621 static u_char *
|
|
|
1622 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
1623 {
|
|
|
1624 u_char *p;
|
|
56
|
1625 uintptr_t escape;
|
|
28
|
1626 ngx_http_upstream_t *u;
|
|
|
1627 ngx_peer_connection_t *peer;
|
|
|
1628
|
|
|
1629 u = r->upstream;
|
|
|
1630 peer = &u->peer;
|
|
|
1631
|
|
|
1632 p = ngx_snprintf(buf, len,
|
|
58
|
1633 ", server: %V, URL: \"%V\","
|
|
52
|
1634 " upstream: %V%V%s%V",
|
|
|
1635 &r->server_name,
|
|
28
|
1636 &r->unparsed_uri,
|
|
58
|
1637 &u->conf->schema,
|
|
28
|
1638 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1639 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
58
|
1640 &u->conf->uri);
|
|
28
|
1641 len -= p - buf;
|
|
|
1642 buf = p;
|
|
|
1643
|
|
|
1644 if (r->quoted_uri) {
|
|
58
|
1645 escape = 2 * ngx_escape_uri(NULL, r->uri.data + u->conf->location->len,
|
|
|
1646 r->uri.len - u->conf->location->len,
|
|
28
|
1647 NGX_ESCAPE_URI);
|
|
|
1648 } else {
|
|
|
1649 escape = 0;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 if (escape) {
|
|
58
|
1653 if (len >= r->uri.len - u->conf->location->len + escape) {
|
|
28
|
1654
|
|
58
|
1655 ngx_escape_uri(buf, r->uri.data + u->conf->location->len,
|
|
|
1656 r->uri.len - u->conf->location->len, NGX_ESCAPE_URI);
|
|
28
|
1657
|
|
58
|
1658 buf += r->uri.len - u->conf->location->len + escape;
|
|
|
1659 len -= r->uri.len - u->conf->location->len + escape;
|
|
28
|
1660
|
|
54
|
1661 if (r->args.len) {
|
|
|
1662 p = ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1663 len -= p - buf;
|
|
|
1664 buf = p;
|
|
28
|
1665 }
|
|
|
1666
|
|
54
|
1667 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1668 }
|
|
|
1669
|
|
58
|
1670 p = ngx_palloc(r->pool, r->uri.len - u->conf->location->len + escape);
|
|
28
|
1671 if (p == NULL) {
|
|
|
1672 return buf;
|
|
|
1673 }
|
|
|
1674
|
|
58
|
1675 ngx_escape_uri(p, r->uri.data + u->conf->location->len,
|
|
|
1676 r->uri.len - u->conf->location->len, NGX_ESCAPE_URI);
|
|
28
|
1677
|
|
58
|
1678 p = ngx_cpymem(buf, p, r->uri.len - u->conf->location->len + escape);
|
|
28
|
1679
|
|
|
1680 } else {
|
|
58
|
1681 p = ngx_cpymem(buf, r->uri.data + u->conf->location->len,
|
|
|
1682 r->uri.len - u->conf->location->len);
|
|
28
|
1683 }
|
|
|
1684
|
|
54
|
1685 len -= p - buf;
|
|
|
1686 buf = p;
|
|
|
1687
|
|
|
1688 if (r->args.len) {
|
|
|
1689 p = ngx_snprintf(buf, len, "?%V", &r->args);
|
|
|
1690 len -= p - buf;
|
|
|
1691 buf = p;
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1695 }
|
|
|
1696
|
|
|
1697
|
|
36
|
1698 static ngx_int_t
|
|
|
1699 ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
28
|
1700 {
|
|
|
1701 ngx_http_log_op_name_t *op;
|
|
|
1702
|
|
|
1703 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1704 op->run = NULL;
|
|
|
1705
|
|
|
1706 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1707 if (op->name.len == 0) {
|
|
|
1708 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1709 }
|
|
|
1710 }
|
|
|
1711
|
|
|
1712 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
1713
|
|
|
1714 return NGX_OK;
|
|
|
1715 }
|
|
58
|
1716
|
|
|
1717
|
|
|
1718 static void *
|
|
|
1719 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
1720 {
|
|
|
1721 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1722
|
|
|
1723 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
1724 if (umcf == NULL) {
|
|
|
1725 return NULL;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728 return umcf;
|
|
|
1729 }
|
|
|
1730
|
|
|
1731
|
|
|
1732 static char *
|
|
|
1733 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
1734 {
|
|
|
1735 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
1736
|
|
|
1737 umcf->headers_in_hash.max_size = 100;
|
|
|
1738 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
1739 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
1740 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
1741
|
|
|
1742 if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
|
|
|
1743 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
1744 {
|
|
|
1745 return NGX_CONF_ERROR;
|
|
|
1746 }
|
|
|
1747
|
|
|
1748 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
1749 "http upstream headers_in hash size: %ui, "
|
|
|
1750 "max buckets per entry: %ui",
|
|
|
1751 umcf->headers_in_hash.hash_size,
|
|
|
1752 umcf->headers_in_hash.min_buckets);
|
|
|
1753
|
|
|
1754 return NGX_CONF_OK;
|
|
|
1755 }
|
