28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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348
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12 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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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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412
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25 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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26 ngx_http_upstream_t *u);
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27 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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28 ngx_http_upstream_t *u);
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294
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29 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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30 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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31 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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32 ngx_http_upstream_t *u);
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130
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33 static void
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34 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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35 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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36 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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37 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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38 ssize_t bytes);
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58
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39 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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40 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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318
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41 static void ngx_http_upstream_store(ngx_http_request_t *r,
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42 ngx_http_upstream_t *u);
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28
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43 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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44 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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45 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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46 static void ngx_http_upstream_cleanup(void *data);
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28
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47 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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48 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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49
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58
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50 static ngx_int_t ngx_http_upstream_process_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_process_multi_header_lines(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 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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57 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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59 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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61 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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63 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 static ngx_int_t
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66 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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70 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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74 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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76 #if (NGX_HTTP_GZIP)
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77 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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78 ngx_table_elt_t *h, ngx_uint_t offset);
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79 #endif
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80
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122
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81 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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82 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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83 ngx_http_variable_value_t *v, uintptr_t data);
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122
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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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200
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89 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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90 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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91 void *conf);
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92
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58
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93 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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94 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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95
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126
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96 #if (NGX_HTTP_SSL)
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140
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97 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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98 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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99 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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100 #endif
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101
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58
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102
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103 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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104
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105 { ngx_string("Status"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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108 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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109
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110 { ngx_string("Content-Type"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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113 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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114
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115 { ngx_string("Content-Length"),
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116 ngx_http_upstream_process_header_line,
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117 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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118 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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119
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120 { ngx_string("Date"),
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121 ngx_http_upstream_process_header_line,
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122 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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123 ngx_http_upstream_copy_header_line,
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124 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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125
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318
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126 { ngx_string("Last-Modified"),
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127 ngx_http_upstream_process_header_line,
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128 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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129 ngx_http_upstream_copy_header_line,
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130 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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131
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58
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132 { ngx_string("Server"),
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133 ngx_http_upstream_process_header_line,
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134 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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135 ngx_http_upstream_copy_header_line,
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136 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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137
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78
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138 { ngx_string("WWW-Authenticate"),
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139 ngx_http_upstream_process_header_line,
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140 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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141 ngx_http_upstream_copy_header_line, 0, 0 },
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142
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58
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143 { ngx_string("Location"),
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392
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144 ngx_http_upstream_process_header_line,
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145 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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146 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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147
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148 { ngx_string("Refresh"),
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149 ngx_http_upstream_ignore_header_line, 0,
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64
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150 ngx_http_upstream_rewrite_refresh, 0, 0 },
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151
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152 { ngx_string("Set-Cookie"),
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153 ngx_http_upstream_ignore_header_line, 0,
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80
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154 ngx_http_upstream_copy_header_line, 0, 1 },
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155
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156 { ngx_string("Content-Disposition"),
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157 ngx_http_upstream_ignore_header_line, 0,
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158 ngx_http_upstream_copy_header_line, 0, 1 },
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159
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160 { ngx_string("Cache-Control"),
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161 ngx_http_upstream_process_multi_header_lines,
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162 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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163 ngx_http_upstream_copy_multi_header_lines,
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64
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164 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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165
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122
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166 { ngx_string("Expires"),
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167 ngx_http_upstream_process_header_line,
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168 offsetof(ngx_http_upstream_headers_in_t, expires),
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169 ngx_http_upstream_copy_header_line,
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170 offsetof(ngx_http_headers_out_t, expires), 1 },
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171
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126
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172 { ngx_string("Accept-Ranges"),
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173 ngx_http_upstream_process_header_line,
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174 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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175 ngx_http_upstream_copy_header_line,
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176 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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177
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58
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178 { ngx_string("Connection"),
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179 ngx_http_upstream_ignore_header_line, 0,
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64
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180 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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181
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190
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182 { ngx_string("Keep-Alive"),
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183 ngx_http_upstream_ignore_header_line, 0,
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184 ngx_http_upstream_ignore_header_line, 0, 0 },
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185
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58
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186 { ngx_string("X-Powered-By"),
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187 ngx_http_upstream_ignore_header_line, 0,
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198
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188 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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189
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190 { ngx_string("X-Accel-Expires"),
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191 ngx_http_upstream_process_header_line,
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192 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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193 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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194
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195 { ngx_string("X-Accel-Redirect"),
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196 ngx_http_upstream_process_header_line,
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197 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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198 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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199
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76
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200 { ngx_string("X-Accel-Limit-Rate"),
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201 ngx_http_upstream_process_limit_rate, 0,
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202 ngx_http_upstream_ignore_header_line, 0, 0 },
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203
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198
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204 { ngx_string("X-Accel-Buffering"),
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205 ngx_http_upstream_process_buffering, 0,
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206 ngx_http_upstream_ignore_header_line, 0, 0 },
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207
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206
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208 { ngx_string("X-Accel-Charset"),
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209 ngx_http_upstream_process_charset, 0,
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210 ngx_http_upstream_ignore_header_line, 0, 0 },
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211
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58
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212 #if (NGX_HTTP_GZIP)
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213 { ngx_string("Content-Encoding"),
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214 ngx_http_upstream_process_header_line,
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215 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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216 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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217 #endif
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218
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64
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219 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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220 };
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28
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221
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222
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200
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223 static ngx_command_t ngx_http_upstream_commands[] = {
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224
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225 { ngx_string("upstream"),
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226 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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227 ngx_http_upstream,
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228 0,
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229 0,
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230 NULL },
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231
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232 { ngx_string("server"),
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260
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233 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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234 ngx_http_upstream_server,
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235 NGX_HTTP_SRV_CONF_OFFSET,
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236 0,
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237 NULL },
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238
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239 ngx_null_command
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240 };
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241
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242
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243 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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244 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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245 NULL, /* postconfiguration */
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246
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247 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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248 ngx_http_upstream_init_main_conf, /* init main configuration */
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249
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250 NULL, /* create server configuration */
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251 NULL, /* merge server configuration */
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252
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253 NULL, /* create location configuration */
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254 NULL /* merge location configuration */
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255 };
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126
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256
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28
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257
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258 ngx_module_t ngx_http_upstream_module = {
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58
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259 NGX_MODULE_V1,
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260 &ngx_http_upstream_module_ctx, /* module context */
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200
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261 ngx_http_upstream_commands, /* module directives */
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28
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262 NGX_HTTP_MODULE, /* module type */
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90
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263 NULL, /* init master */
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28
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264 NULL, /* init module */
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90
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265 NULL, /* init process */
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266 NULL, /* init thread */
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267 NULL, /* exit thread */
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268 NULL, /* exit process */
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269 NULL, /* exit master */
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270 NGX_MODULE_V1_PADDING
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28
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271 };
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272
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273
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122
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274 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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275
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298
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276 { ngx_string("upstream_addr"), NULL,
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277 ngx_http_upstream_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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278
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186
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279 { ngx_string("upstream_status"), NULL,
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132
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280 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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281
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186
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282 { ngx_string("upstream_response_time"), NULL,
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132
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283 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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284
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186
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285 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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286 };
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287
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288
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412
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289 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
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290 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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291 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
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292 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
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293 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
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294 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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295 { 0, 0 }
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296 };
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297
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36
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298 void
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299 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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300 {
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348
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301 ngx_str_t *host;
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302 ngx_uint_t i;
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303 ngx_connection_t *c;
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304 ngx_resolver_ctx_t *ctx, temp;
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305 ngx_http_cleanup_t *cln;
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306 ngx_http_upstream_t *u;
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307 ngx_http_core_loc_conf_t *clcf;
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308 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
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309 ngx_http_upstream_main_conf_t *umcf;
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28
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310
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311 c = r->connection;
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312
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313 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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314 "http init upstream, client timer: %d", c->read->timer_set);
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315
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316 if (c->read->timer_set) {
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317 ngx_del_timer(c->read);
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318 }
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319
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178
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320 u = r->upstream;
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321
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322 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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323 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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324 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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325 }
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126
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326
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28
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327 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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328
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329 if (!c->write->active) {
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80
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330 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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331 == NGX_ERROR)
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28
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332 {
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333 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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334 return;
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335 }
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336 }
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337 }
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338
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86
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339 if (r->request_body) {
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340 u->request_bufs = r->request_body->bufs;
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341 }
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58
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342
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86
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343 if (u->create_request(r) != NGX_OK) {
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28
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344 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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345 return;
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346 }
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347
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58
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348 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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349
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350 u->output.pool = r->pool;
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351 u->output.bufs.num = 1;
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58
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352 u->output.bufs.size = clcf->client_body_buffer_size;
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28
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353 u->output.output_filter = ngx_chain_writer;
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354 u->output.filter_ctx = &u->writer;
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355
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356 u->writer.pool = r->pool;
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357
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296
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358 if (r->upstream_states == NULL) {
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359
|
|
360 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
361 sizeof(ngx_http_upstream_state_t));
|
|
362 if (r->upstream_states == NULL) {
|
|
363 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
364 return;
|
|
365 }
|
|
366
|
|
367 } else {
|
|
368
|
|
369 u->state = ngx_array_push(r->upstream_states);
|
|
370 if (u->state == NULL) {
|
|
371 ngx_http_upstream_finalize_request(r, u,
|
|
372 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
373 return;
|
|
374 }
|
|
375
|
|
376 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
28
|
377 }
|
|
378
|
142
|
379 cln = ngx_http_cleanup_add(r, 0);
|
118
|
380 if (cln == NULL) {
|
|
381 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
382 return;
|
|
383 }
|
|
384
|
|
385 cln->handler = ngx_http_upstream_cleanup;
|
|
386 cln->data = r;
|
|
387 u->cleanup = &cln->handler;
|
|
388
|
320
|
389 u->store = (u->conf->store || u->conf->store_lengths);
|
318
|
390
|
348
|
391 if (u->resolved == NULL) {
|
|
392
|
|
393 uscf = u->conf->upstream;
|
|
394
|
|
395 } else {
|
|
396
|
356
|
397 host = &u->resolved->host;
|
348
|
398
|
|
399 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
400
|
|
401 uscfp = umcf->upstreams.elts;
|
|
402
|
|
403 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
404
|
|
405 uscf = uscfp[i];
|
|
406
|
|
407 if (uscf->host.len == host->len
|
416
|
408 && ((uscf->port == 0 && u->resolved->no_port)
|
366
|
409 || uscf->port == u->resolved->port)
|
348
|
410 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
411 {
|
|
412 goto found;
|
|
413 }
|
|
414 }
|
|
415
|
|
416 temp.name = *host;
|
|
417
|
|
418 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
419 if (ctx == NULL) {
|
|
420 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
421 return;
|
|
422 }
|
|
423
|
354
|
424 if (ctx == NGX_NO_RESOLVER) {
|
|
425 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
426 "no resolver defined to resolve %V", host);
|
|
427
|
|
428 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
429 return;
|
|
430 }
|
|
431
|
348
|
432 ctx->name = *host;
|
|
433 ctx->type = NGX_RESOLVE_A;
|
|
434 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
435 ctx->data = r;
|
|
436 ctx->timeout = clcf->resolver_timeout;
|
|
437
|
372
|
438 u->resolved->ctx = ctx;
|
|
439
|
348
|
440 if (ngx_resolve_name(ctx) != NGX_OK) {
|
372
|
441 u->resolved->ctx = NULL;
|
348
|
442 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
443 return;
|
|
444 }
|
|
445
|
|
446 return;
|
|
447 }
|
|
448
|
|
449 found:
|
|
450
|
|
451 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
452 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
453 return;
|
|
454 }
|
|
455
|
28
|
456 ngx_http_upstream_connect(r, u);
|
|
457 }
|
|
458
|
|
459
|
36
|
460 static void
|
348
|
461 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
462 {
|
|
463 ngx_http_request_t *r;
|
|
464 ngx_http_upstream_resolved_t *ur;
|
|
465
|
|
466 r = ctx->data;
|
|
467
|
|
468 r->upstream->resolved->ctx = NULL;
|
|
469
|
|
470 if (ctx->state) {
|
|
471 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
472 "%V could not be resolved (%i: %s)",
|
|
473 &ctx->name, ctx->state,
|
|
474 ngx_resolver_strerror(ctx->state));
|
|
475
|
|
476 ngx_resolve_name_done(ctx);
|
|
477 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
478 return;
|
|
479 }
|
|
480
|
|
481 ur = r->upstream->resolved;
|
|
482 ur->naddrs = ctx->naddrs;
|
|
483 ur->addrs = ctx->addrs;
|
|
484
|
|
485 #if (NGX_DEBUG)
|
|
486 {
|
|
487 in_addr_t addr;
|
|
488 ngx_uint_t i;
|
|
489
|
|
490 for (i = 0; i < ctx->naddrs; i++) {
|
|
491 addr = ntohl(ur->addrs[i]);
|
|
492
|
|
493 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
494 "name was resolved to %ud.%ud.%ud.%ud",
|
|
495 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
496 (addr >> 8) & 0xff, addr & 0xff);
|
|
497 }
|
|
498 }
|
|
499 #endif
|
|
500
|
|
501 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
502 ngx_resolve_name_done(ctx);
|
|
503 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
504 return;
|
|
505 }
|
|
506
|
|
507 ngx_resolve_name_done(ctx);
|
|
508
|
|
509 ngx_http_upstream_connect(r, r->upstream);
|
|
510 }
|
|
511
|
|
512
|
|
513 static void
|
58
|
514 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
515 {
|
|
516 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
517 }
|
|
518
|
|
519
|
|
520 static void
|
|
521 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
522 {
|
|
523 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
524 }
|
|
525
|
|
526
|
|
527 static void
|
|
528 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
529 ngx_event_t *ev)
|
28
|
530 {
|
|
531 int n;
|
|
532 char buf[1];
|
126
|
533 ngx_err_t err;
|
28
|
534 ngx_connection_t *c;
|
|
535 ngx_http_upstream_t *u;
|
|
536
|
76
|
537 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
538 "http upstream check client, write event:%d, \"%V\"",
|
|
539 ev->write, &r->uri);
|
28
|
540
|
58
|
541 c = r->connection;
|
32
|
542 u = r->upstream;
|
|
543
|
132
|
544 if (c->error) {
|
76
|
545 ngx_http_upstream_finalize_request(r, u,
|
|
546 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
547 return;
|
|
548 }
|
|
549
|
32
|
550 if (u->peer.connection == NULL) {
|
|
551 return;
|
|
552 }
|
|
553
|
28
|
554 #if (NGX_HAVE_KQUEUE)
|
|
555
|
|
556 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
557
|
|
558 if (!ev->pending_eof) {
|
|
559 return;
|
|
560 }
|
|
561
|
|
562 ev->eof = 1;
|
132
|
563 c->error = 1;
|
28
|
564
|
|
565 if (ev->kq_errno) {
|
|
566 ev->error = 1;
|
|
567 }
|
|
568
|
340
|
569 if (!u->cacheable && !u->store && u->peer.connection) {
|
28
|
570 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
76
|
571 "kevent() reported that client closed prematurely "
|
|
572 "connection, so upstream connection is closed too");
|
28
|
573 ngx_http_upstream_finalize_request(r, u,
|
|
574 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
575 return;
|
|
576 }
|
|
577
|
|
578 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
579 "kevent() reported that client closed "
|
|
580 "prematurely connection");
|
|
581
|
|
582 if (u->peer.connection == NULL) {
|
|
583 ngx_http_upstream_finalize_request(r, u,
|
|
584 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
585 return;
|
|
586 }
|
|
587
|
|
588 return;
|
|
589 }
|
|
590
|
|
591 #endif
|
|
592
|
|
593 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
594
|
|
595 err = ngx_socket_errno;
|
|
596
|
286
|
597 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
598 "http upstream recv(): %d", n);
|
|
599
|
28
|
600 /*
|
|
601 * we do not need to disable the write event because
|
|
602 * that event has NGX_USE_CLEAR_EVENT type
|
|
603 */
|
|
604
|
|
605 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
606 return;
|
|
607 }
|
|
608
|
|
609 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
610 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
611 ngx_http_upstream_finalize_request(r, u,
|
|
612 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
613 return;
|
|
614 }
|
|
615 }
|
|
616
|
|
617 if (n > 0) {
|
|
618 return;
|
|
619 }
|
|
620
|
|
621 if (n == -1) {
|
|
622 if (err == NGX_EAGAIN) {
|
|
623 return;
|
|
624 }
|
|
625
|
|
626 ev->error = 1;
|
|
627
|
32
|
628 } else { /* n == 0 */
|
28
|
629 err = 0;
|
|
630 }
|
|
631
|
78
|
632 ev->eof = 1;
|
132
|
633 c->error = 1;
|
78
|
634
|
340
|
635 if (!u->cacheable && !u->store && u->peer.connection) {
|
28
|
636 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
637 "client closed prematurely connection, "
|
|
638 "so upstream connection is closed too");
|
|
639 ngx_http_upstream_finalize_request(r, u,
|
|
640 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
641 return;
|
|
642 }
|
|
643
|
|
644 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
645 "client closed prematurely connection");
|
|
646
|
|
647 if (u->peer.connection == NULL) {
|
|
648 ngx_http_upstream_finalize_request(r, u,
|
|
649 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
650 return;
|
|
651 }
|
|
652 }
|
|
653
|
|
654
|
36
|
655 static void
|
|
656 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
657 {
|
140
|
658 ngx_int_t rc;
|
214
|
659 ngx_time_t *tp;
|
140
|
660 ngx_connection_t *c;
|
28
|
661
|
32
|
662 r->connection->log->action = "connecting to upstream";
|
28
|
663
|
|
664 r->connection->single_connection = 0;
|
|
665
|
262
|
666 if (u->state && u->state->response_sec) {
|
214
|
667 tp = ngx_timeofday();
|
262
|
668 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
669 u->state->response_msec = tp->msec - u->state->response_msec;
|
214
|
670 }
|
|
671
|
296
|
672 u->state = ngx_array_push(r->upstream_states);
|
214
|
673 if (u->state == NULL) {
|
|
674 ngx_http_upstream_finalize_request(r, u,
|
|
675 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
676 return;
|
|
677 }
|
|
678
|
|
679 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
680
|
|
681 tp = ngx_timeofday();
|
262
|
682 u->state->response_sec = tp->sec;
|
|
683 u->state->response_msec = tp->msec;
|
214
|
684
|
28
|
685 rc = ngx_event_connect_peer(&u->peer);
|
|
686
|
|
687 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
688 "http upstream connect: %i", rc);
|
|
689
|
|
690 if (rc == NGX_ERROR) {
|
|
691 ngx_http_upstream_finalize_request(r, u,
|
|
692 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
693 return;
|
|
694 }
|
|
695
|
356
|
696 u->state->peer = u->peer.name;
|
|
697
|
92
|
698 if (rc == NGX_BUSY) {
|
|
699 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
326
|
700 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
701 return;
|
92
|
702 }
|
|
703
|
326
|
704 if (rc == NGX_DECLINED) {
|
28
|
705 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
706 return;
|
|
707 }
|
|
708
|
126
|
709 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
710
|
28
|
711 c = u->peer.connection;
|
|
712
|
|
713 c->data = r;
|
140
|
714
|
58
|
715 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
716 c->read->handler = ngx_http_upstream_process_header;
|
28
|
717
|
326
|
718 c->sendfile &= r->connection->sendfile;
|
372
|
719 u->output.sendfile = c->sendfile;
|
28
|
720
|
|
721 c->pool = r->pool;
|
|
722 c->read->log = c->write->log = c->log = r->connection->log;
|
|
723
|
|
724 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
725
|
|
726 u->writer.out = NULL;
|
|
727 u->writer.last = &u->writer.out;
|
|
728 u->writer.connection = c;
|
|
729 u->writer.limit = 0;
|
|
730
|
|
731 if (u->request_sent) {
|
58
|
732 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
733 ngx_http_upstream_finalize_request(r, u,
|
|
734 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
735 return;
|
|
736 }
|
28
|
737 }
|
|
738
|
276
|
739 if (r->request_body
|
|
740 && r->request_body->buf
|
|
741 && r->request_body->temp_file
|
|
742 && r == r->main)
|
|
743 {
|
122
|
744 /*
|
|
745 * the r->request_body->buf can be reused for one request only,
|
|
746 * the subrequests should allocate their own temporay bufs
|
|
747 */
|
|
748
|
|
749 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
750 if (u->output.free == NULL) {
|
|
751 ngx_http_upstream_finalize_request(r, u,
|
|
752 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
753 return;
|
28
|
754 }
|
122
|
755
|
|
756 u->output.free->buf = r->request_body->buf;
|
|
757 u->output.free->next = NULL;
|
|
758 u->output.allocated = 1;
|
|
759
|
|
760 r->request_body->buf->pos = r->request_body->buf->start;
|
|
761 r->request_body->buf->last = r->request_body->buf->start;
|
|
762 r->request_body->buf->tag = u->output.tag;
|
28
|
763 }
|
|
764
|
|
765 u->request_sent = 0;
|
|
766
|
|
767 if (rc == NGX_AGAIN) {
|
|
768 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
769 return;
|
|
770 }
|
|
771
|
126
|
772 #if (NGX_HTTP_SSL)
|
|
773
|
348
|
774 if (u->ssl && c->ssl == NULL) {
|
140
|
775 ngx_http_upstream_ssl_init_connection(r, u, c);
|
126
|
776 return;
|
|
777 }
|
|
778
|
|
779 #endif
|
|
780
|
28
|
781 ngx_http_upstream_send_request(r, u);
|
|
782 }
|
|
783
|
|
784
|
126
|
785 #if (NGX_HTTP_SSL)
|
|
786
|
|
787 static void
|
140
|
788 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
789 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
790 {
|
260
|
791 ngx_int_t rc;
|
140
|
792
|
|
793 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
794 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
795 == NGX_ERROR)
|
|
796 {
|
|
797 ngx_http_upstream_finalize_request(r, u,
|
|
798 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
799 return;
|
|
800 }
|
|
801
|
|
802 c->sendfile = 0;
|
168
|
803 u->output.sendfile = 0;
|
140
|
804
|
398
|
805 if (u->conf->ssl_session_reuse) {
|
|
806 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
807 ngx_http_upstream_finalize_request(r, u,
|
|
808 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
809 return;
|
|
810 }
|
140
|
811 }
|
|
812
|
190
|
813 r->connection->log->action = "SSL handshaking to upstream";
|
|
814
|
140
|
815 rc = ngx_ssl_handshake(c);
|
|
816
|
|
817 if (rc == NGX_AGAIN) {
|
|
818 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
819 return;
|
|
820 }
|
|
821
|
|
822 ngx_http_upstream_ssl_handshake(c);
|
|
823 }
|
|
824
|
|
825
|
|
826 static void
|
126
|
827 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
828 {
|
|
829 ngx_http_request_t *r;
|
|
830 ngx_http_upstream_t *u;
|
|
831
|
|
832 r = c->data;
|
|
833 u = r->upstream;
|
|
834
|
|
835 if (c->ssl->handshaked) {
|
|
836
|
398
|
837 if (u->conf->ssl_session_reuse) {
|
|
838 u->peer.save_session(&u->peer, u->peer.data);
|
|
839 }
|
260
|
840
|
126
|
841 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
842 c->read->handler = ngx_http_upstream_process_header;
|
|
843
|
|
844 ngx_http_upstream_send_request(r, u);
|
|
845
|
|
846 return;
|
|
847 }
|
|
848
|
|
849 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
850
|
|
851 }
|
|
852
|
|
853 #endif
|
|
854
|
|
855
|
58
|
856 static ngx_int_t
|
36
|
857 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
858 {
|
|
859 ngx_chain_t *cl;
|
|
860
|
58
|
861 if (u->reinit_request(r) != NGX_OK) {
|
|
862 return NGX_ERROR;
|
|
863 }
|
|
864
|
356
|
865 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
866
|
|
867 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
140
|
868 sizeof(ngx_table_elt_t))
|
|
869 != NGX_OK)
|
58
|
870 {
|
|
871 return NGX_ERROR;
|
28
|
872 }
|
|
873
|
|
874 /* reinit the request chain */
|
126
|
875
|
58
|
876 for (cl = u->request_bufs; cl; cl = cl->next) {
|
28
|
877 cl->buf->pos = cl->buf->start;
|
|
878 cl->buf->file_pos = 0;
|
|
879 }
|
|
880
|
58
|
881 /* reinit the subrequest's ngx_output_chain() context */
|
|
882
|
122
|
883 if (r->request_body && r->request_body->temp_file
|
146
|
884 && r != r->main && u->output.buf)
|
122
|
885 {
|
|
886 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
887 if (u->output.free == NULL) {
|
|
888 return NGX_ERROR;
|
58
|
889 }
|
122
|
890
|
|
891 u->output.free->buf = u->output.buf;
|
|
892 u->output.free->next = NULL;
|
|
893
|
|
894 u->output.buf->pos = u->output.buf->start;
|
|
895 u->output.buf->last = u->output.buf->start;
|
58
|
896 }
|
28
|
897
|
|
898 u->output.buf = NULL;
|
|
899 u->output.in = NULL;
|
|
900 u->output.busy = NULL;
|
126
|
901
|
130
|
902 /* reinit u->buffer */
|
126
|
903
|
28
|
904 #if 0
|
|
905 if (u->cache) {
|
130
|
906 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
907 u->buffer.last = u->buffer.pos;
|
28
|
908
|
|
909 } else {
|
130
|
910 u->buffer.pos = u->buffer.start;
|
|
911 u->buffer.last = u->buffer.start;
|
28
|
912 }
|
|
913 #else
|
58
|
914
|
130
|
915 u->buffer.pos = u->buffer.start;
|
|
916 u->buffer.last = u->buffer.start;
|
58
|
917
|
28
|
918 #endif
|
|
919
|
58
|
920 return NGX_OK;
|
28
|
921 }
|
|
922
|
|
923
|
36
|
924 static void
|
|
925 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
926 {
|
294
|
927 ngx_int_t rc;
|
32
|
928 ngx_connection_t *c;
|
126
|
929
|
28
|
930 c = u->peer.connection;
|
|
931
|
|
932 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
933 "http upstream send request");
|
|
934
|
294
|
935 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
936 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
937 return;
|
28
|
938 }
|
|
939
|
32
|
940 c->log->action = "sending request to upstream";
|
28
|
941
|
58
|
942 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
28
|
943
|
|
944 u->request_sent = 1;
|
|
945
|
|
946 if (rc == NGX_ERROR) {
|
|
947 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
948 return;
|
|
949 }
|
|
950
|
|
951 if (c->write->timer_set) {
|
|
952 ngx_del_timer(c->write);
|
|
953 }
|
|
954
|
|
955 if (rc == NGX_AGAIN) {
|
|
956 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
957
|
|
958 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
959 {
|
|
960 ngx_http_upstream_finalize_request(r, u,
|
|
961 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
962 return;
|
|
963 }
|
|
964
|
|
965 return;
|
|
966 }
|
|
967
|
|
968 /* rc == NGX_OK */
|
|
969
|
|
970 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
971 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
972 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
973 ngx_tcp_push_n " failed");
|
|
974 ngx_http_upstream_finalize_request(r, u,
|
|
975 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
126
|
976 return;
|
28
|
977 }
|
|
978
|
|
979 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
980 }
|
126
|
981
|
28
|
982 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
983
|
|
984 #if 1
|
|
985 if (c->read->ready) {
|
126
|
986
|
28
|
987 /* post aio operation */
|
|
988
|
|
989 /*
|
|
990 * TODO comment
|
|
991 * although we can post aio operation just in the end
|
|
992 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
993 * it's better to do here because we postpone header buffer allocation
|
|
994 */
|
|
995
|
|
996 ngx_http_upstream_process_header(c->read);
|
|
997 return;
|
|
998 }
|
|
999 #endif
|
|
1000
|
58
|
1001 c->write->handler = ngx_http_upstream_dummy_handler;
|
28
|
1002
|
58
|
1003 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
28
|
1004 ngx_http_upstream_finalize_request(r, u,
|
|
1005 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1006 return;
|
|
1007 }
|
|
1008 }
|
|
1009
|
|
1010
|
36
|
1011 static void
|
|
1012 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
28
|
1013 {
|
|
1014 ngx_connection_t *c;
|
|
1015 ngx_http_request_t *r;
|
|
1016 ngx_http_upstream_t *u;
|
|
1017
|
|
1018 c = wev->data;
|
|
1019 r = c->data;
|
|
1020 u = r->upstream;
|
|
1021
|
|
1022 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
1023 "http upstream send request handler");
|
|
1024
|
|
1025 if (wev->timedout) {
|
|
1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1027 return;
|
|
1028 }
|
|
1029
|
140
|
1030 #if (NGX_HTTP_SSL)
|
|
1031
|
348
|
1032 if (u->ssl && c->ssl == NULL) {
|
140
|
1033 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
1034 return;
|
|
1035 }
|
|
1036
|
|
1037 #endif
|
|
1038
|
200
|
1039 if (u->header_sent) {
|
|
1040 wev->handler = ngx_http_upstream_dummy_handler;
|
|
1041
|
|
1042 (void) ngx_handle_write_event(wev, 0);
|
|
1043
|
|
1044 return;
|
|
1045 }
|
|
1046
|
28
|
1047 ngx_http_upstream_send_request(r, u);
|
|
1048 }
|
|
1049
|
|
1050
|
36
|
1051 static void
|
|
1052 ngx_http_upstream_process_header(ngx_event_t *rev)
|
28
|
1053 {
|
64
|
1054 ssize_t n;
|
|
1055 ngx_int_t rc;
|
122
|
1056 ngx_str_t *uri, args;
|
198
|
1057 ngx_uint_t i, flags;
|
64
|
1058 ngx_list_part_t *part;
|
|
1059 ngx_table_elt_t *h;
|
|
1060 ngx_connection_t *c;
|
|
1061 ngx_http_request_t *r;
|
|
1062 ngx_http_upstream_t *u;
|
|
1063 ngx_http_upstream_header_t *hh;
|
|
1064 ngx_http_upstream_main_conf_t *umcf;
|
28
|
1065
|
|
1066 c = rev->data;
|
|
1067 r = c->data;
|
|
1068 u = r->upstream;
|
|
1069
|
|
1070 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
32
|
1071 "http upstream process header");
|
28
|
1072
|
32
|
1073 c->log->action = "reading response header from upstream";
|
28
|
1074
|
|
1075 if (rev->timedout) {
|
|
1076 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1077 return;
|
|
1078 }
|
126
|
1079
|
294
|
1080 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1081 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1082 return;
|
|
1083 }
|
|
1084
|
130
|
1085 if (u->buffer.start == NULL) {
|
|
1086 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
1087 if (u->buffer.start == NULL) {
|
28
|
1088 ngx_http_upstream_finalize_request(r, u,
|
|
1089 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1090 return;
|
|
1091 }
|
|
1092
|
130
|
1093 u->buffer.pos = u->buffer.start;
|
|
1094 u->buffer.last = u->buffer.start;
|
|
1095 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
1096 u->buffer.temporary = 1;
|
|
1097
|
|
1098 u->buffer.tag = u->output.tag;
|
28
|
1099
|
356
|
1100 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
130
|
1101 sizeof(ngx_table_elt_t))
|
|
1102 != NGX_OK)
|
58
|
1103 {
|
|
1104 ngx_http_upstream_finalize_request(r, u,
|
|
1105 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1106 return;
|
|
1107 }
|
|
1108
|
28
|
1109 #if 0
|
|
1110 if (u->cache) {
|
130
|
1111 u->buffer.pos += u->cache->ctx.header_size;
|
|
1112 u->buffer.last = u->buffer.pos;
|
28
|
1113 }
|
|
1114 #endif
|
|
1115 }
|
|
1116
|
340
|
1117 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
28
|
1118
|
|
1119 if (n == NGX_AGAIN) {
|
|
1120 #if 0
|
|
1121 ngx_add_timer(rev, u->read_timeout);
|
|
1122 #endif
|
|
1123
|
|
1124 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
1125 ngx_http_upstream_finalize_request(r, u,
|
|
1126 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1127 return;
|
|
1128 }
|
|
1129
|
|
1130 return;
|
|
1131 }
|
|
1132
|
|
1133 if (n == 0) {
|
|
1134 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
1135 "upstream prematurely closed connection");
|
|
1136 }
|
|
1137
|
|
1138 if (n == NGX_ERROR || n == 0) {
|
|
1139 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1140 return;
|
|
1141 }
|
|
1142
|
130
|
1143 u->buffer.last += n;
|
28
|
1144
|
|
1145 #if 0
|
|
1146 u->valid_header_in = 0;
|
|
1147
|
|
1148 u->peer.cached = 0;
|
|
1149 #endif
|
|
1150
|
|
1151 rc = u->process_header(r);
|
|
1152
|
|
1153 if (rc == NGX_AGAIN) {
|
|
1154 #if 0
|
|
1155 ngx_add_timer(rev, u->read_timeout);
|
|
1156 #endif
|
|
1157
|
130
|
1158 if (u->buffer.pos == u->buffer.end) {
|
28
|
1159 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
1160 "upstream sent too big header");
|
|
1161
|
|
1162 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1163 return;
|
|
1164 }
|
|
1165
|
|
1166 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
1167 ngx_http_upstream_finalize_request(r, u,
|
|
1168 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1169 return;
|
|
1170 }
|
|
1171
|
|
1172 return;
|
|
1173 }
|
|
1174
|
|
1175 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
1176 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1177 return;
|
|
1178 }
|
|
1179
|
356
|
1180 if (rc == NGX_ERROR) {
|
28
|
1181 ngx_http_upstream_finalize_request(r, u,
|
|
1182 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1183 return;
|
|
1184 }
|
|
1185
|
|
1186 /* rc == NGX_OK */
|
|
1187
|
412
|
1188 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
1189
|
|
1190 if (r->subrequest_in_memory) {
|
|
1191 u->buffer.last = u->buffer.pos;
|
58
|
1192 }
|
|
1193
|
412
|
1194 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
146
|
1195 return;
|
|
1196 }
|
|
1197
|
412
|
1198 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
146
|
1199 return;
|
|
1200 }
|
58
|
1201 }
|
|
1202
|
230
|
1203 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1204
|
356
|
1205 if (u->headers_in.x_accel_redirect) {
|
244
|
1206
|
64
|
1207 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1208
|
356
|
1209 part = &u->headers_in.headers.part;
|
64
|
1210 h = part->elts;
|
|
1211
|
|
1212 for (i = 0; /* void */; i++) {
|
|
1213
|
|
1214 if (i >= part->nelts) {
|
|
1215 if (part->next == NULL) {
|
|
1216 break;
|
|
1217 }
|
126
|
1218
|
64
|
1219 part = part->next;
|
|
1220 h = part->elts;
|
|
1221 i = 0;
|
|
1222 }
|
|
1223
|
198
|
1224 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1225 h[i].lowcase_key, h[i].key.len);
|
|
1226
|
|
1227 if (hh && hh->redirect) {
|
|
1228 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
250
|
1229 ngx_http_finalize_request(r,
|
244
|
1230 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
64
|
1231 return;
|
|
1232 }
|
|
1233 }
|
|
1234 }
|
|
1235
|
356
|
1236 uri = &u->headers_in.x_accel_redirect->value;
|
122
|
1237 args.len = 0;
|
|
1238 args.data = NULL;
|
|
1239 flags = 0;
|
|
1240
|
|
1241 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
244
|
1242 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
122
|
1243 return;
|
|
1244 }
|
|
1245
|
|
1246 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
1247 r->zero_in_uri = 1;
|
|
1248 }
|
|
1249
|
202
|
1250 if (r->method != NGX_HTTP_HEAD) {
|
|
1251 r->method = NGX_HTTP_GET;
|
|
1252 }
|
|
1253
|
398
|
1254 r->valid_unparsed_uri = 0;
|
|
1255
|
122
|
1256 ngx_http_internal_redirect(r, uri, &args);
|
64
|
1257 return;
|
|
1258 }
|
|
1259
|
356
|
1260 part = &u->headers_in.headers.part;
|
58
|
1261 h = part->elts;
|
|
1262
|
|
1263 for (i = 0; /* void */; i++) {
|
28
|
1264
|
58
|
1265 if (i >= part->nelts) {
|
|
1266 if (part->next == NULL) {
|
|
1267 break;
|
|
1268 }
|
126
|
1269
|
58
|
1270 part = part->next;
|
|
1271 h = part->elts;
|
|
1272 i = 0;
|
|
1273 }
|
|
1274
|
198
|
1275 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
1276 h[i].lowcase_key, h[i].key.len))
|
58
|
1277 {
|
198
|
1278 continue;
|
|
1279 }
|
|
1280
|
|
1281 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1282 h[i].lowcase_key, h[i].key.len);
|
|
1283
|
|
1284 if (hh) {
|
|
1285 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
58
|
1286 ngx_http_upstream_finalize_request(r, u,
|
|
1287 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1288 return;
|
|
1289 }
|
|
1290
|
|
1291 continue;
|
|
1292 }
|
|
1293
|
|
1294 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1295 ngx_http_upstream_finalize_request(r, u,
|
|
1296 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1297 return;
|
|
1298 }
|
|
1299 }
|
|
1300
|
198
|
1301 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
1302 r->headers_out.server->hash = 0;
|
|
1303 }
|
|
1304
|
|
1305 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
1306 r->headers_out.date->hash = 0;
|
|
1307 }
|
|
1308
|
78
|
1309 r->headers_out.status = u->headers_in.status_n;
|
|
1310 r->headers_out.status_line = u->headers_in.status_line;
|
|
1311
|
364
|
1312 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
1313
|
130
|
1314 if (r->headers_out.content_length_n != -1) {
|
|
1315 u->length = (size_t) r->headers_out.content_length_n;
|
|
1316
|
|
1317 } else {
|
|
1318 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1319 }
|
|
1320
|
248
|
1321 if (!r->subrequest_in_memory) {
|
|
1322 ngx_http_upstream_send_response(r, u);
|
|
1323 return;
|
|
1324 }
|
|
1325
|
|
1326 /* subrequest content in memory */
|
|
1327
|
|
1328 if (u->input_filter == NULL) {
|
|
1329 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1330 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1331 u->input_filter_ctx = r;
|
|
1332 }
|
|
1333
|
|
1334 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1335 ngx_http_upstream_finalize_request(r, u,
|
|
1336 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1337 return;
|
|
1338 }
|
|
1339
|
420
|
1340 n = u->buffer.last - u->buffer.pos;
|
|
1341
|
|
1342 if (n) {
|
|
1343 u->buffer.last -= n;
|
|
1344
|
|
1345 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
248
|
1346 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1347 return;
|
|
1348 }
|
|
1349
|
420
|
1350 if (u->length == 0) {
|
|
1351 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1352 return;
|
|
1353 }
|
248
|
1354 }
|
|
1355
|
|
1356 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
1357
|
|
1358 ngx_http_upstream_process_body_in_memory(rev);
|
|
1359 }
|
|
1360
|
|
1361
|
294
|
1362 static ngx_int_t
|
412
|
1363 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1364 {
|
|
1365 ngx_uint_t status;
|
|
1366 ngx_http_upstream_next_t *un;
|
|
1367
|
|
1368 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
1369 return NGX_DECLINED;
|
|
1370 }
|
|
1371
|
|
1372 status = u->headers_in.status_n;
|
|
1373
|
|
1374 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
1375
|
|
1376 if (status != un->status) {
|
|
1377 continue;
|
|
1378 }
|
|
1379
|
|
1380 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
1381 ngx_http_upstream_next(r, u, un->mask);
|
|
1382 return NGX_OK;
|
|
1383 }
|
|
1384
|
|
1385 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
1386 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
1387 return NGX_OK;
|
|
1388 }
|
|
1389
|
|
1390 #if (NGX_HTTP_CACHE)
|
|
1391
|
|
1392 if (u->peer.tries == 0 && u->stale && (u->conf->use_stale & un->mask)) {
|
|
1393 ngx_http_upstream_finalize_request(r, u,
|
|
1394 ngx_http_send_cached_response(r));
|
|
1395 return NGX_OK;
|
|
1396 }
|
|
1397
|
|
1398 #endif
|
|
1399 }
|
|
1400
|
|
1401 return NGX_DECLINED;
|
|
1402 }
|
|
1403
|
|
1404
|
|
1405 static ngx_int_t
|
|
1406 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
1407 ngx_http_upstream_t *u)
|
|
1408 {
|
|
1409 ngx_int_t status;
|
|
1410 ngx_uint_t i;
|
|
1411 ngx_table_elt_t *h;
|
|
1412 ngx_http_err_page_t *err_page;
|
|
1413 ngx_http_core_loc_conf_t *clcf;
|
|
1414
|
|
1415 if (!u->conf->intercept_errors) {
|
|
1416 return NGX_DECLINED;
|
|
1417 }
|
|
1418
|
|
1419 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1420
|
|
1421 if (clcf->error_pages == NULL) {
|
|
1422 return NGX_DECLINED;
|
|
1423 }
|
|
1424
|
|
1425 status = u->headers_in.status_n;
|
|
1426
|
|
1427 err_page = clcf->error_pages->elts;
|
|
1428 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
1429
|
|
1430 if (err_page[i].status == status) {
|
|
1431
|
|
1432 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
1433
|
|
1434 h = ngx_list_push(&r->headers_out.headers);
|
|
1435
|
|
1436 if (h == NULL) {
|
|
1437 ngx_http_upstream_finalize_request(r, u,
|
|
1438 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1439 return NGX_OK;
|
|
1440 }
|
|
1441
|
|
1442 *h = *u->headers_in.www_authenticate;
|
|
1443
|
|
1444 r->headers_out.www_authenticate = h;
|
|
1445 }
|
|
1446
|
|
1447 ngx_http_upstream_finalize_request(r, u, status);
|
|
1448
|
|
1449 return NGX_OK;
|
|
1450 }
|
|
1451 }
|
|
1452
|
|
1453 return NGX_DECLINED;
|
|
1454 }
|
|
1455
|
|
1456
|
|
1457 static ngx_int_t
|
294
|
1458 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
1459 {
|
|
1460 int err;
|
|
1461 socklen_t len;
|
|
1462
|
|
1463 #if (NGX_HAVE_KQUEUE)
|
|
1464
|
|
1465 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
296
|
1466 if (c->write->pending_eof) {
|
336
|
1467 c->log->action = "connecting to upstream";
|
296
|
1468 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
1469 "kevent() reported that connect() failed");
|
|
1470 return NGX_ERROR;
|
|
1471 }
|
294
|
1472
|
|
1473 } else
|
|
1474 #endif
|
|
1475 {
|
296
|
1476 err = 0;
|
|
1477 len = sizeof(int);
|
|
1478
|
|
1479 /*
|
|
1480 * BSDs and Linux return 0 and set a pending error in err
|
|
1481 * Solaris returns -1 and sets errno
|
|
1482 */
|
|
1483
|
|
1484 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
1485 == -1)
|
|
1486 {
|
|
1487 err = ngx_errno;
|
|
1488 }
|
|
1489
|
|
1490 if (err) {
|
336
|
1491 c->log->action = "connecting to upstream";
|
296
|
1492 (void) ngx_connection_error(c, err, "connect() failed");
|
|
1493 return NGX_ERROR;
|
|
1494 }
|
294
|
1495 }
|
|
1496
|
|
1497 return NGX_OK;
|
|
1498 }
|
|
1499
|
|
1500
|
248
|
1501 static void
|
|
1502 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
1503 {
|
|
1504 size_t size;
|
|
1505 ssize_t n;
|
|
1506 ngx_buf_t *b;
|
|
1507 ngx_connection_t *c;
|
|
1508 ngx_http_request_t *r;
|
|
1509 ngx_http_upstream_t *u;
|
|
1510
|
|
1511 c = rev->data;
|
|
1512 r = c->data;
|
|
1513 u = r->upstream;
|
|
1514
|
|
1515 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1516 "http upstream process body on memory");
|
|
1517
|
|
1518 if (rev->timedout) {
|
|
1519 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
1520 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
1521 return;
|
|
1522 }
|
|
1523
|
|
1524 b = &u->buffer;
|
|
1525
|
|
1526 for ( ;; ) {
|
|
1527
|
|
1528 size = b->end - b->last;
|
|
1529
|
|
1530 if (size == 0) {
|
|
1531 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
1532 "upstream buffer is too small to read repsonse");
|
|
1533 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1534 return;
|
|
1535 }
|
|
1536
|
|
1537 n = c->recv(c, b->last, size);
|
|
1538
|
|
1539 if (n == NGX_AGAIN) {
|
|
1540 break;
|
|
1541 }
|
|
1542
|
|
1543 if (n == 0 || n == NGX_ERROR) {
|
|
1544 ngx_http_upstream_finalize_request(r, u, n);
|
|
1545 return;
|
|
1546 }
|
|
1547
|
|
1548 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1549 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1550 return;
|
|
1551 }
|
|
1552
|
|
1553 if (!rev->ready) {
|
|
1554 break;
|
|
1555 }
|
|
1556 }
|
|
1557
|
|
1558 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
1559 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1560 return;
|
|
1561 }
|
|
1562
|
|
1563 if (rev->active) {
|
|
1564 ngx_add_timer(rev, u->conf->read_timeout);
|
|
1565
|
|
1566 } else if (rev->timer_set) {
|
|
1567 ngx_del_timer(rev);
|
|
1568 }
|
230
|
1569 }
|
|
1570
|
|
1571
|
|
1572 static void
|
|
1573 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1574 {
|
|
1575 int tcp_nodelay;
|
|
1576 ssize_t size;
|
|
1577 ngx_int_t rc;
|
|
1578 ngx_event_pipe_t *p;
|
|
1579 ngx_connection_t *c;
|
|
1580 ngx_pool_cleanup_t *cl;
|
|
1581 ngx_pool_cleanup_file_t *clf;
|
|
1582 ngx_http_core_loc_conf_t *clcf;
|
|
1583
|
58
|
1584 rc = ngx_http_send_header(r);
|
28
|
1585
|
274
|
1586 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
34
|
1587 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
1588 return;
|
|
1589 }
|
|
1590
|
|
1591 u->header_sent = 1;
|
|
1592
|
122
|
1593 if (r->request_body && r->request_body->temp_file) {
|
112
|
1594 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
1595 if (cl->handler == ngx_pool_cleanup_file) {
|
|
1596 clf = cl->data;
|
|
1597
|
|
1598 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
1599 cl->handler(clf);
|
|
1600 cl->handler = NULL;
|
208
|
1601 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
112
|
1602 break;
|
|
1603 }
|
|
1604 }
|
|
1605 }
|
|
1606 }
|
|
1607
|
132
|
1608 c = r->connection;
|
|
1609
|
130
|
1610 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1611
|
198
|
1612 if (!u->buffering) {
|
130
|
1613
|
|
1614 if (u->input_filter == NULL) {
|
|
1615 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1616 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1617 u->input_filter_ctx = r;
|
|
1618 }
|
|
1619
|
|
1620 u->peer.connection->read->handler =
|
|
1621 ngx_http_upstream_process_non_buffered_body;
|
|
1622 r->write_event_handler =
|
|
1623 ngx_http_upstream_process_non_buffered_downstream;
|
|
1624
|
|
1625 r->limit_rate = 0;
|
|
1626
|
|
1627 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1628 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1629 return;
|
|
1630 }
|
|
1631
|
132
|
1632 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
1633 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
1634
|
|
1635 tcp_nodelay = 1;
|
|
1636
|
|
1637 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
1638 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
1639 {
|
|
1640 ngx_connection_error(c, ngx_socket_errno,
|
|
1641 "setsockopt(TCP_NODELAY) failed");
|
|
1642 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1643 return;
|
|
1644 }
|
|
1645
|
|
1646 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
1647 }
|
|
1648
|
130
|
1649 size = u->buffer.last - u->buffer.pos;
|
|
1650
|
|
1651 if (size) {
|
|
1652 u->buffer.last = u->buffer.pos;
|
|
1653
|
|
1654 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
1655 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1656 return;
|
|
1657 }
|
|
1658
|
132
|
1659 ngx_http_upstream_process_non_buffered_body(c->write);
|
130
|
1660
|
|
1661 } else {
|
|
1662 u->buffer.pos = u->buffer.start;
|
|
1663 u->buffer.last = u->buffer.start;
|
|
1664
|
|
1665 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
1666 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1667 return;
|
|
1668 }
|
336
|
1669
|
|
1670 if (u->peer.connection->read->ready) {
|
|
1671 ngx_http_upstream_process_non_buffered_body(
|
|
1672 u->peer.connection->read);
|
|
1673 }
|
130
|
1674 }
|
|
1675
|
|
1676 return;
|
|
1677 }
|
|
1678
|
28
|
1679 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
1680
|
|
1681 #if 0
|
|
1682
|
|
1683 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
1684 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
132
|
1685 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
28
|
1686 ngx_close_file_n " \"%s\" failed",
|
|
1687 u->cache->ctx.file.name.data);
|
|
1688 }
|
|
1689 }
|
|
1690
|
340
|
1691 if (u->cacheable) {
|
130
|
1692 header = (ngx_http_cache_header_t *) u->buffer->start;
|
28
|
1693
|
|
1694 header->expires = u->cache->ctx.expires;
|
|
1695 header->last_modified = u->cache->ctx.last_modified;
|
|
1696 header->date = u->cache->ctx.date;
|
|
1697 header->length = r->headers_out.content_length_n;
|
|
1698 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
1699
|
|
1700 header->key_len = u->cache->ctx.key0.len;
|
|
1701 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
1702 header->key[header->key_len] = LF;
|
|
1703 }
|
|
1704
|
|
1705 #endif
|
|
1706
|
130
|
1707 p = u->pipe;
|
28
|
1708
|
|
1709 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
1710 p->output_ctx = r;
|
|
1711 p->tag = u->output.tag;
|
126
|
1712 p->bufs = u->conf->bufs;
|
28
|
1713 p->busy_size = u->conf->busy_buffers_size;
|
|
1714 p->upstream = u->peer.connection;
|
132
|
1715 p->downstream = c;
|
28
|
1716 p->pool = r->pool;
|
132
|
1717 p->log = c->log;
|
126
|
1718
|
340
|
1719 p->cacheable = u->cacheable || u->store;
|
28
|
1720
|
50
|
1721 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
1722 if (p->temp_file == NULL) {
|
28
|
1723 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1724 return;
|
|
1725 }
|
|
1726
|
|
1727 p->temp_file->file.fd = NGX_INVALID_FILE;
|
132
|
1728 p->temp_file->file.log = c->log;
|
28
|
1729 p->temp_file->path = u->conf->temp_path;
|
|
1730 p->temp_file->pool = r->pool;
|
126
|
1731
|
340
|
1732 if (u->cacheable || u->store) {
|
28
|
1733 p->temp_file->persistent = 1;
|
318
|
1734
|
28
|
1735 } else {
|
216
|
1736 p->temp_file->log_level = NGX_LOG_WARN;
|
28
|
1737 p->temp_file->warn = "an upstream response is buffered "
|
|
1738 "to a temporary file";
|
|
1739 }
|
|
1740
|
|
1741 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
1742 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
1743
|
50
|
1744 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
1745 if (p->preread_bufs == NULL) {
|
28
|
1746 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1747 return;
|
|
1748 }
|
318
|
1749
|
130
|
1750 p->preread_bufs->buf = &u->buffer;
|
28
|
1751 p->preread_bufs->next = NULL;
|
130
|
1752 u->buffer.recycled = 1;
|
|
1753
|
|
1754 p->preread_size = u->buffer.last - u->buffer.pos;
|
28
|
1755
|
340
|
1756 if (u->cacheable) {
|
318
|
1757
|
28
|
1758 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
1759 if (p->buf_to_file == NULL) {
|
|
1760 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1761 return;
|
|
1762 }
|
318
|
1763
|
130
|
1764 p->buf_to_file->pos = u->buffer.start;
|
|
1765 p->buf_to_file->last = u->buffer.pos;
|
28
|
1766 p->buf_to_file->temporary = 1;
|
|
1767 }
|
|
1768
|
|
1769 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
1770 /* the posted aio operation may currupt a shadow buffer */
|
|
1771 p->single_buf = 1;
|
|
1772 }
|
|
1773
|
|
1774 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
1775 p->free_bufs = 1;
|
|
1776
|
|
1777 /*
|
130
|
1778 * event_pipe would do u->buffer.last += p->preread_size
|
28
|
1779 * as though these bytes were read
|
|
1780 */
|
130
|
1781 u->buffer.last = u->buffer.pos;
|
28
|
1782
|
|
1783 if (u->conf->cyclic_temp_file) {
|
|
1784
|
|
1785 /*
|
|
1786 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
1787 * because the writing a new data may interfere with sendfile()
|
|
1788 * that uses the same kernel file pages (at least on FreeBSD)
|
|
1789 */
|
|
1790
|
|
1791 p->cyclic_temp_file = 1;
|
132
|
1792 c->sendfile = 0;
|
28
|
1793
|
|
1794 } else {
|
|
1795 p->cyclic_temp_file = 0;
|
|
1796 }
|
|
1797
|
|
1798 p->read_timeout = u->conf->read_timeout;
|
|
1799 p->send_timeout = clcf->send_timeout;
|
|
1800 p->send_lowat = clcf->send_lowat;
|
|
1801
|
58
|
1802 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
1803 r->write_event_handler = ngx_http_upstream_process_downstream;
|
28
|
1804
|
|
1805 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
1806 }
|
|
1807
|
|
1808
|
36
|
1809 static void
|
130
|
1810 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
1811 {
|
|
1812 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
1813 }
|
|
1814
|
|
1815
|
|
1816 static void
|
|
1817 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
1818 {
|
|
1819 size_t size;
|
|
1820 ssize_t n;
|
|
1821 ngx_buf_t *b;
|
132
|
1822 ngx_int_t rc;
|
130
|
1823 ngx_uint_t do_write;
|
260
|
1824 ngx_connection_t *c, *downstream, *upstream;
|
130
|
1825 ngx_http_request_t *r;
|
|
1826 ngx_http_upstream_t *u;
|
|
1827 ngx_http_core_loc_conf_t *clcf;
|
|
1828
|
|
1829 c = ev->data;
|
244
|
1830 r = c->data;
|
|
1831 u = r->upstream;
|
130
|
1832
|
|
1833 if (ev->write) {
|
|
1834 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1835 "http upstream process non buffered downstream");
|
|
1836 c->log->action = "sending to client";
|
|
1837
|
|
1838 } else {
|
|
1839 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1840 "http upstream process non buffered upstream");
|
|
1841 c->log->action = "reading upstream";
|
|
1842 }
|
|
1843
|
|
1844 if (ev->timedout) {
|
|
1845 if (ev->write) {
|
|
1846 c->timedout = 1;
|
160
|
1847 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
1848
|
130
|
1849 } else {
|
160
|
1850 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
130
|
1851 }
|
244
|
1852
|
|
1853 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1854 return;
|
130
|
1855 }
|
|
1856
|
260
|
1857 downstream = r->connection;
|
|
1858 upstream = u->peer.connection;
|
130
|
1859
|
|
1860 b = &u->buffer;
|
|
1861
|
|
1862 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1863
|
206
|
1864 do_write = ev->write || u->length == 0;
|
130
|
1865
|
|
1866 for ( ;; ) {
|
|
1867
|
|
1868 if (do_write) {
|
|
1869
|
|
1870 if (u->out_bufs || u->busy_bufs) {
|
132
|
1871 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
1872
|
260
|
1873 if (downstream->destroyed) {
|
132
|
1874 return;
|
|
1875 }
|
|
1876
|
|
1877 if (rc == NGX_ERROR) {
|
130
|
1878 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1879 return;
|
|
1880 }
|
|
1881
|
|
1882 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
1883 &u->out_bufs, u->output.tag);
|
|
1884 }
|
|
1885
|
|
1886 if (u->busy_bufs == NULL) {
|
|
1887
|
|
1888 if (u->length == 0
|
260
|
1889 || upstream->read->eof
|
|
1890 || upstream->read->error)
|
130
|
1891 {
|
|
1892 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1893 return;
|
|
1894 }
|
|
1895
|
|
1896 b->pos = b->start;
|
|
1897 b->last = b->start;
|
|
1898 }
|
|
1899 }
|
|
1900
|
|
1901 size = b->end - b->last;
|
|
1902
|
|
1903 if (size > u->length) {
|
|
1904 size = u->length;
|
|
1905 }
|
|
1906
|
260
|
1907 if (size && upstream->read->ready) {
|
|
1908
|
|
1909 n = upstream->recv(upstream, b->last, size);
|
130
|
1910
|
|
1911 if (n == NGX_AGAIN) {
|
|
1912 break;
|
|
1913 }
|
|
1914
|
|
1915 if (n > 0) {
|
|
1916 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1917 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1918 return;
|
|
1919 }
|
|
1920 }
|
|
1921
|
|
1922 do_write = 1;
|
|
1923
|
|
1924 continue;
|
|
1925 }
|
|
1926
|
|
1927 break;
|
|
1928 }
|
|
1929
|
260
|
1930 if (downstream->data == r) {
|
|
1931 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
132
|
1932 == NGX_ERROR)
|
|
1933 {
|
|
1934 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1935 return;
|
|
1936 }
|
130
|
1937 }
|
|
1938
|
276
|
1939 if (downstream->write->active && !downstream->write->ready) {
|
260
|
1940 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
1941
|
|
1942 } else if (downstream->write->timer_set) {
|
|
1943 ngx_del_timer(downstream->write);
|
130
|
1944 }
|
|
1945
|
260
|
1946 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
130
|
1947 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1948 return;
|
|
1949 }
|
|
1950
|
276
|
1951 if (upstream->read->active && !upstream->read->ready) {
|
260
|
1952 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
1953
|
|
1954 } else if (upstream->read->timer_set) {
|
|
1955 ngx_del_timer(upstream->read);
|
130
|
1956 }
|
|
1957 }
|
|
1958
|
|
1959
|
|
1960 static ngx_int_t
|
|
1961 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
1962 {
|
|
1963 return NGX_OK;
|
|
1964 }
|
|
1965
|
|
1966
|
|
1967 static ngx_int_t
|
|
1968 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
1969 {
|
|
1970 ngx_http_request_t *r = data;
|
|
1971
|
|
1972 ngx_buf_t *b;
|
|
1973 ngx_chain_t *cl, **ll;
|
|
1974 ngx_http_upstream_t *u;
|
|
1975
|
|
1976 u = r->upstream;
|
|
1977
|
|
1978 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
1979 ll = &cl->next;
|
|
1980 }
|
|
1981
|
|
1982 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
1983 if (cl == NULL) {
|
|
1984 return NGX_ERROR;
|
|
1985 }
|
|
1986
|
|
1987 *ll = cl;
|
|
1988
|
|
1989 cl->buf->flush = 1;
|
|
1990 cl->buf->memory = 1;
|
|
1991
|
|
1992 b = &u->buffer;
|
|
1993
|
|
1994 cl->buf->pos = b->last;
|
|
1995 b->last += bytes;
|
|
1996 cl->buf->last = b->last;
|
366
|
1997 cl->buf->tag = u->output.tag;
|
130
|
1998
|
|
1999 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
2000 return NGX_OK;
|
|
2001 }
|
|
2002
|
|
2003 u->length -= bytes;
|
|
2004
|
|
2005 return NGX_OK;
|
|
2006 }
|
|
2007
|
|
2008
|
|
2009 static void
|
58
|
2010 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
2011 {
|
|
2012 ngx_http_upstream_process_body(r->connection->write);
|
|
2013 }
|
|
2014
|
|
2015
|
|
2016 static void
|
36
|
2017 ngx_http_upstream_process_body(ngx_event_t *ev)
|
28
|
2018 {
|
364
|
2019 ngx_temp_file_t *tf;
|
58
|
2020 ngx_event_pipe_t *p;
|
132
|
2021 ngx_connection_t *c, *downstream;
|
284
|
2022 ngx_http_log_ctx_t *ctx;
|
28
|
2023 ngx_http_request_t *r;
|
|
2024 ngx_http_upstream_t *u;
|
|
2025
|
|
2026 c = ev->data;
|
|
2027 r = c->data;
|
|
2028 u = r->upstream;
|
132
|
2029 downstream = r->connection;
|
28
|
2030
|
|
2031 if (ev->write) {
|
32
|
2032 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2033 "http upstream process downstream");
|
|
2034 c->log->action = "sending to client";
|
126
|
2035
|
28
|
2036 } else {
|
32
|
2037 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2038 "http upstream process upstream");
|
|
2039 c->log->action = "reading upstream";
|
284
|
2040
|
|
2041 ctx = c->log->data;
|
|
2042 ctx->current_request = r;
|
28
|
2043 }
|
126
|
2044
|
130
|
2045 p = u->pipe;
|
28
|
2046
|
|
2047 if (ev->timedout) {
|
|
2048 if (ev->write) {
|
76
|
2049 if (ev->delayed) {
|
|
2050
|
|
2051 ev->timedout = 0;
|
|
2052 ev->delayed = 0;
|
|
2053
|
|
2054 if (!ev->ready) {
|
|
2055 ngx_add_timer(ev, p->send_timeout);
|
|
2056
|
|
2057 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
2058 {
|
|
2059 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2060 return;
|
|
2061 }
|
|
2062
|
|
2063 return;
|
|
2064 }
|
|
2065
|
|
2066 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
132
|
2067
|
|
2068 if (downstream->destroyed) {
|
|
2069 return;
|
|
2070 }
|
|
2071
|
76
|
2072 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2073 return;
|
|
2074 }
|
|
2075
|
|
2076 } else {
|
|
2077 p->downstream_error = 1;
|
126
|
2078 c->timedout = 1;
|
160
|
2079 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
76
|
2080 }
|
28
|
2081
|
|
2082 } else {
|
126
|
2083 p->upstream_error = 1;
|
160
|
2084 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
28
|
2085 }
|
|
2086
|
|
2087 } else {
|
76
|
2088 if (ev->write && ev->delayed) {
|
|
2089 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2090 "http downstream delayed");
|
|
2091
|
|
2092 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
2093 return;
|
|
2094 }
|
|
2095
|
|
2096 return;
|
|
2097 }
|
|
2098
|
28
|
2099 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
132
|
2100
|
|
2101 if (downstream->destroyed) {
|
|
2102 return;
|
|
2103 }
|
|
2104
|
28
|
2105 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2106 return;
|
|
2107 }
|
|
2108 }
|
126
|
2109
|
28
|
2110 if (u->peer.connection) {
|
|
2111
|
318
|
2112 if (u->store) {
|
|
2113
|
364
|
2114 tf = u->pipe->temp_file;
|
|
2115
|
|
2116 if (p->upstream_eof
|
|
2117 && u->headers_in.status_n == NGX_HTTP_OK
|
|
2118 && (u->headers_in.content_length_n == -1
|
|
2119 || (u->headers_in.content_length_n == tf->offset)))
|
|
2120 {
|
318
|
2121 ngx_http_upstream_store(r, u);
|
|
2122
|
|
2123 } else if ((p->upstream_error
|
|
2124 || (p->upstream_eof
|
|
2125 && u->headers_in.status_n != NGX_HTTP_OK))
|
364
|
2126 && tf->file.fd != NGX_INVALID_FILE)
|
318
|
2127 {
|
364
|
2128 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
2129
|
318
|
2130 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
2131 ngx_delete_file_n " \"%s\" failed",
|
|
2132 u->pipe->temp_file->file.name.data);
|
|
2133 }
|
|
2134 }
|
|
2135 }
|
|
2136
|
28
|
2137 #if (NGX_HTTP_FILE_CACHE)
|
|
2138
|
340
|
2139 if (p->upstream_done && u->cacheable) {
|
28
|
2140 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
2141 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2142 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2143 return;
|
|
2144 }
|
|
2145
|
340
|
2146 } else if (p->upstream_eof && u->cacheable) {
|
28
|
2147
|
|
2148 /* TODO: check length & update cache */
|
|
2149
|
|
2150 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
2151 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2152 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2153 return;
|
|
2154 }
|
|
2155 }
|
|
2156
|
|
2157 #endif
|
|
2158
|
|
2159 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
32
|
2160 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2161 "http upstream exit: %p", p->out);
|
28
|
2162 #if 0
|
|
2163 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2164 #endif
|
|
2165 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2166 return;
|
|
2167 }
|
|
2168 }
|
|
2169
|
|
2170 if (p->downstream_error) {
|
32
|
2171 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2172 "http upstream downstream error");
|
28
|
2173
|
340
|
2174 if (!u->cacheable && u->peer.connection) {
|
28
|
2175 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2176 }
|
|
2177 }
|
|
2178 }
|
|
2179
|
|
2180
|
36
|
2181 static void
|
318
|
2182 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
2183 {
|
370
|
2184 size_t root;
|
|
2185 time_t lm;
|
|
2186 ngx_str_t path;
|
|
2187 ngx_temp_file_t *tf;
|
|
2188 ngx_ext_rename_file_t ext;
|
318
|
2189
|
358
|
2190 tf = u->pipe->temp_file;
|
|
2191
|
|
2192 if (tf->file.fd == NGX_INVALID_FILE) {
|
318
|
2193
|
|
2194 /* create file for empty 200 response */
|
|
2195
|
|
2196 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2197 if (tf == NULL) {
|
|
2198 return;
|
|
2199 }
|
|
2200
|
|
2201 tf->file.fd = NGX_INVALID_FILE;
|
|
2202 tf->file.log = r->connection->log;
|
|
2203 tf->path = u->conf->temp_path;
|
|
2204 tf->pool = r->pool;
|
|
2205 tf->persistent = 1;
|
|
2206
|
|
2207 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
2208 tf->persistent, tf->clean, tf->access)
|
|
2209 != NGX_OK)
|
|
2210 {
|
|
2211 return;
|
|
2212 }
|
|
2213
|
|
2214 u->pipe->temp_file = tf;
|
|
2215 }
|
|
2216
|
370
|
2217 ext.access = u->conf->store_access;
|
|
2218 ext.time = -1;
|
|
2219 ext.create_path = 1;
|
|
2220 ext.delete_file = 1;
|
|
2221 ext.log = r->connection->log;
|
318
|
2222
|
356
|
2223 if (u->headers_in.last_modified) {
|
|
2224
|
370
|
2225 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
2226 u->headers_in.last_modified->value.len);
|
318
|
2227
|
|
2228 if (lm != NGX_ERROR) {
|
370
|
2229 ext.time = lm;
|
|
2230 ext.fd = tf->file.fd;
|
318
|
2231 }
|
|
2232 }
|
|
2233
|
320
|
2234 if (u->conf->store_lengths == NULL) {
|
|
2235
|
|
2236 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
2237
|
|
2238 } else {
|
|
2239 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
2240 u->conf->store_values->elts)
|
|
2241 == NULL)
|
|
2242 {
|
|
2243 return;
|
|
2244 }
|
|
2245 }
|
318
|
2246
|
|
2247 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
370
|
2248 "upstream stores \"%s\" to \"%s\"",
|
|
2249 tf->file.name.data, path.data);
|
|
2250
|
|
2251 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
318
|
2252 }
|
|
2253
|
|
2254
|
|
2255 static void
|
36
|
2256 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
28
|
2257 {
|
|
2258 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
2259 "http upstream dummy handler");
|
|
2260 }
|
|
2261
|
|
2262
|
36
|
2263 static void
|
|
2264 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
2265 ngx_uint_t ft_type)
|
28
|
2266 {
|
260
|
2267 ngx_uint_t status, state;
|
28
|
2268
|
|
2269 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
260
|
2270 "http next upstream, %xi", ft_type);
|
28
|
2271
|
|
2272 #if 0
|
|
2273 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2274 #endif
|
|
2275
|
74
|
2276 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
260
|
2277 state = NGX_PEER_NEXT;
|
74
|
2278 } else {
|
260
|
2279 state = NGX_PEER_FAILED;
|
28
|
2280 }
|
74
|
2281
|
326
|
2282 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
2283 u->peer.free(&u->peer, u->peer.data, state);
|
|
2284 }
|
74
|
2285
|
28
|
2286 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
2287 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
2288 "upstream timed out");
|
|
2289 }
|
126
|
2290
|
28
|
2291 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
2292 status = 0;
|
|
2293
|
|
2294 } else {
|
|
2295 switch(ft_type) {
|
|
2296
|
|
2297 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
2298 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
2299 break;
|
|
2300
|
|
2301 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
2302 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
2303 break;
|
|
2304
|
|
2305 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
2306 status = NGX_HTTP_NOT_FOUND;
|
|
2307 break;
|
|
2308
|
|
2309 /*
|
|
2310 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
2311 * never reach here
|
|
2312 */
|
|
2313
|
|
2314 default:
|
|
2315 status = NGX_HTTP_BAD_GATEWAY;
|
|
2316 }
|
|
2317 }
|
|
2318
|
132
|
2319 if (r->connection->error) {
|
28
|
2320 ngx_http_upstream_finalize_request(r, u,
|
|
2321 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
2322 return;
|
|
2323 }
|
|
2324
|
|
2325 if (status) {
|
|
2326 u->state->status = status;
|
|
2327
|
74
|
2328 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
28
|
2329
|
|
2330 #if (NGX_HTTP_CACHE)
|
|
2331
|
|
2332 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
2333 ngx_http_upstream_finalize_request(r, u,
|
74
|
2334 ngx_http_send_cached_response(r));
|
28
|
2335 return;
|
|
2336 }
|
|
2337
|
|
2338 #endif
|
|
2339
|
|
2340 ngx_http_upstream_finalize_request(r, u, status);
|
|
2341 return;
|
|
2342 }
|
|
2343 }
|
|
2344
|
|
2345 if (u->peer.connection) {
|
|
2346 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2347 "close http upstream connection: %d",
|
|
2348 u->peer.connection->fd);
|
126
|
2349 #if (NGX_HTTP_SSL)
|
260
|
2350
|
126
|
2351 if (u->peer.connection->ssl) {
|
260
|
2352 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2353 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
2354
|
|
2355 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2356 }
|
|
2357 #endif
|
260
|
2358
|
28
|
2359 ngx_close_connection(u->peer.connection);
|
|
2360 }
|
|
2361
|
|
2362 #if 0
|
|
2363 if (u->conf->busy_lock && !u->busy_locked) {
|
|
2364 ngx_http_upstream_busy_lock(p);
|
|
2365 return;
|
|
2366 }
|
|
2367 #endif
|
|
2368
|
|
2369 ngx_http_upstream_connect(r, u);
|
|
2370 }
|
|
2371
|
|
2372
|
36
|
2373 static void
|
118
|
2374 ngx_http_upstream_cleanup(void *data)
|
|
2375 {
|
|
2376 ngx_http_request_t *r = data;
|
|
2377
|
356
|
2378 ngx_http_upstream_t *u;
|
|
2379
|
118
|
2380 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2381 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
2382
|
356
|
2383 u = r->upstream;
|
|
2384
|
|
2385 if (u->resolved && u->resolved->ctx) {
|
|
2386 ngx_resolve_name_done(u->resolved->ctx);
|
348
|
2387 }
|
|
2388
|
356
|
2389 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
118
|
2390 }
|
|
2391
|
|
2392
|
|
2393 static void
|
36
|
2394 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
2395 ngx_http_upstream_t *u, ngx_int_t rc)
|
28
|
2396 {
|
262
|
2397 ngx_time_t *tp;
|
112
|
2398
|
32
|
2399 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2400 "finalize http upstream request: %i", rc);
|
28
|
2401
|
118
|
2402 *u->cleanup = NULL;
|
|
2403
|
348
|
2404 if (u->state && u->state->response_sec) {
|
112
|
2405 tp = ngx_timeofday();
|
262
|
2406 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
2407 u->state->response_msec = tp->msec - u->state->response_msec;
|
112
|
2408 }
|
|
2409
|
28
|
2410 u->finalize_request(r, rc);
|
|
2411
|
348
|
2412 if (u->peer.free) {
|
|
2413 u->peer.free(&u->peer, u->peer.data, 0);
|
|
2414 }
|
260
|
2415
|
28
|
2416 if (u->peer.connection) {
|
260
|
2417
|
126
|
2418 #if (NGX_HTTP_SSL)
|
|
2419
|
|
2420 /* TODO: do not shutdown persistent connection */
|
|
2421
|
|
2422 if (u->peer.connection->ssl) {
|
260
|
2423
|
|
2424 /*
|
|
2425 * We send the "close notify" shutdown alert to the upstream only
|
|
2426 * and do not wait its "close notify" shutdown alert.
|
|
2427 * It is acceptable according to the TLS standard.
|
|
2428 */
|
|
2429
|
|
2430 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2431
|
|
2432 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2433 }
|
|
2434 #endif
|
260
|
2435
|
|
2436 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2437 "close http upstream connection: %d",
|
|
2438 u->peer.connection->fd);
|
|
2439
|
28
|
2440 ngx_close_connection(u->peer.connection);
|
|
2441 }
|
|
2442
|
32
|
2443 u->peer.connection = NULL;
|
|
2444
|
112
|
2445 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
28
|
2446 {
|
|
2447 rc = 0;
|
|
2448 }
|
|
2449
|
130
|
2450 if (u->pipe && u->pipe->temp_file) {
|
28
|
2451 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2452 "http upstream temp fd: %d",
|
130
|
2453 u->pipe->temp_file->file.fd);
|
28
|
2454 }
|
|
2455
|
|
2456 #if 0
|
|
2457 if (u->cache) {
|
|
2458 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2459 "http upstream cache fd: %d",
|
28
|
2460 u->cache->ctx.file.fd);
|
|
2461 }
|
|
2462 #endif
|
|
2463
|
64
|
2464 if (rc == NGX_DECLINED) {
|
|
2465 return;
|
|
2466 }
|
|
2467
|
32
|
2468 r->connection->log->action = "sending to client";
|
|
2469
|
314
|
2470 if (rc == 0) {
|
|
2471 if (r == r->main) {
|
|
2472 if (!r->post_action) {
|
|
2473 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
2474 }
|
|
2475
|
|
2476 } else {
|
|
2477 if (r->out) {
|
|
2478 rc = NGX_AGAIN;
|
|
2479 }
|
|
2480 }
|
28
|
2481 }
|
|
2482
|
|
2483 ngx_http_finalize_request(r, rc);
|
|
2484 }
|
|
2485
|
|
2486
|
58
|
2487 static ngx_int_t
|
|
2488 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2489 ngx_uint_t offset)
|
126
|
2490 {
|
58
|
2491 ngx_table_elt_t **ph;
|
126
|
2492
|
58
|
2493 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
2494
|
|
2495 if (*ph == NULL) {
|
|
2496 *ph = h;
|
|
2497 }
|
|
2498
|
|
2499 return NGX_OK;
|
|
2500 }
|
|
2501
|
|
2502
|
|
2503 static ngx_int_t
|
|
2504 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
2505 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2506 {
|
|
2507 ngx_array_t *pa;
|
|
2508 ngx_table_elt_t **ph;
|
|
2509
|
|
2510 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
2511
|
|
2512 if (pa->elts == NULL) {
|
|
2513 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2514 {
|
|
2515 return NGX_ERROR;
|
|
2516 }
|
|
2517 }
|
|
2518
|
|
2519 ph = ngx_array_push(pa);
|
|
2520 if (ph == NULL) {
|
|
2521 return NGX_ERROR;
|
|
2522 }
|
|
2523
|
|
2524 *ph = h;
|
|
2525
|
|
2526 return NGX_OK;
|
|
2527 }
|
|
2528
|
|
2529
|
|
2530 static ngx_int_t
|
|
2531 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2532 ngx_uint_t offset)
|
|
2533 {
|
|
2534 return NGX_OK;
|
|
2535 }
|
|
2536
|
|
2537
|
|
2538 static ngx_int_t
|
76
|
2539 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2540 ngx_uint_t offset)
|
126
|
2541 {
|
76
|
2542 ngx_int_t n;
|
|
2543
|
|
2544 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
2545
|
|
2546 n = ngx_atoi(h->value.data, h->value.len);
|
|
2547
|
|
2548 if (n != NGX_ERROR) {
|
|
2549 r->limit_rate = (size_t) n;
|
|
2550 }
|
|
2551
|
|
2552 return NGX_OK;
|
|
2553 }
|
|
2554
|
|
2555
|
|
2556 static ngx_int_t
|
198
|
2557 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2558 ngx_uint_t offset)
|
|
2559 {
|
|
2560 u_char c0, c1, c2;
|
|
2561
|
|
2562 if (r->upstream->conf->change_buffering) {
|
|
2563
|
|
2564 if (h->value.len == 2) {
|
|
2565 c0 = ngx_tolower(h->value.data[0]);
|
|
2566 c1 = ngx_tolower(h->value.data[1]);
|
|
2567
|
|
2568 if (c0 == 'n' && c1 == 'o') {
|
|
2569 r->upstream->buffering = 0;
|
|
2570 }
|
|
2571
|
|
2572 } else if (h->value.len == 3) {
|
|
2573 c0 = ngx_tolower(h->value.data[0]);
|
|
2574 c1 = ngx_tolower(h->value.data[1]);
|
|
2575 c2 = ngx_tolower(h->value.data[2]);
|
|
2576
|
|
2577 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
2578 r->upstream->buffering = 1;
|
|
2579 }
|
|
2580 }
|
|
2581 }
|
|
2582
|
|
2583 return NGX_OK;
|
|
2584 }
|
|
2585
|
|
2586
|
|
2587 static ngx_int_t
|
206
|
2588 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2589 ngx_uint_t offset)
|
|
2590 {
|
|
2591 r->headers_out.override_charset = &h->value;
|
|
2592
|
|
2593 return NGX_OK;
|
|
2594 }
|
|
2595
|
|
2596
|
|
2597 static ngx_int_t
|
58
|
2598 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2599 ngx_uint_t offset)
|
|
2600 {
|
122
|
2601 ngx_table_elt_t *ho, **ph;
|
58
|
2602
|
|
2603 ho = ngx_list_push(&r->headers_out.headers);
|
|
2604 if (ho == NULL) {
|
|
2605 return NGX_ERROR;
|
|
2606 }
|
|
2607
|
|
2608 *ho = *h;
|
|
2609
|
122
|
2610 if (offset) {
|
|
2611 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
2612 *ph = ho;
|
|
2613 }
|
|
2614
|
58
|
2615 return NGX_OK;
|
|
2616 }
|
|
2617
|
|
2618
|
|
2619 static ngx_int_t
|
|
2620 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
2621 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2622 {
|
|
2623 ngx_array_t *pa;
|
|
2624 ngx_table_elt_t *ho, **ph;
|
|
2625
|
|
2626 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
2627
|
|
2628 if (pa->elts == NULL) {
|
|
2629 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2630 {
|
|
2631 return NGX_ERROR;
|
|
2632 }
|
|
2633 }
|
|
2634
|
|
2635 ph = ngx_array_push(pa);
|
|
2636 if (ph == NULL) {
|
|
2637 return NGX_ERROR;
|
|
2638 }
|
|
2639
|
|
2640 ho = ngx_list_push(&r->headers_out.headers);
|
|
2641 if (ho == NULL) {
|
|
2642 return NGX_ERROR;
|
|
2643 }
|
|
2644
|
|
2645 *ho = *h;
|
|
2646 *ph = ho;
|
|
2647
|
|
2648 return NGX_OK;
|
|
2649 }
|
|
2650
|
|
2651
|
|
2652 static ngx_int_t
|
|
2653 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2654 ngx_uint_t offset)
|
|
2655 {
|
206
|
2656 u_char *p, *last;
|
|
2657
|
|
2658 r->headers_out.content_type_len = h->value.len;
|
58
|
2659 r->headers_out.content_type = h->value;
|
|
2660
|
206
|
2661 for (p = h->value.data; *p; p++) {
|
|
2662
|
|
2663 if (*p != ';') {
|
|
2664 continue;
|
|
2665 }
|
|
2666
|
|
2667 last = p;
|
|
2668
|
|
2669 while (*++p == ' ') { /* void */ }
|
|
2670
|
372
|
2671 if (*p == '\0') {
|
|
2672 return NGX_OK;
|
|
2673 }
|
|
2674
|
286
|
2675 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
206
|
2676 continue;
|
|
2677 }
|
|
2678
|
|
2679 p += 8;
|
|
2680
|
|
2681 r->headers_out.content_type_len = last - h->value.data;
|
|
2682
|
410
|
2683 if (*p == '"') {
|
|
2684 p++;
|
|
2685 }
|
|
2686
|
|
2687 last = h->value.data + h->value.len;
|
|
2688
|
|
2689 if (*(last - 1) == '"') {
|
|
2690 last--;
|
|
2691 }
|
|
2692
|
|
2693 r->headers_out.charset.len = last - p;
|
206
|
2694 r->headers_out.charset.data = p;
|
292
|
2695
|
|
2696 return NGX_OK;
|
206
|
2697 }
|
|
2698
|
58
|
2699 return NGX_OK;
|
|
2700 }
|
|
2701
|
|
2702
|
|
2703 static ngx_int_t
|
|
2704 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2705 ngx_uint_t offset)
|
|
2706 {
|
|
2707 ngx_table_elt_t *ho;
|
|
2708
|
|
2709 ho = ngx_list_push(&r->headers_out.headers);
|
|
2710 if (ho == NULL) {
|
|
2711 return NGX_ERROR;
|
|
2712 }
|
|
2713
|
|
2714 *ho = *h;
|
|
2715
|
|
2716 r->headers_out.content_length = ho;
|
|
2717 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
2718
|
|
2719 return NGX_OK;
|
|
2720 }
|
|
2721
|
|
2722
|
|
2723 static ngx_int_t
|
|
2724 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2725 ngx_uint_t offset)
|
|
2726 {
|
|
2727 ngx_int_t rc;
|
|
2728 ngx_table_elt_t *ho;
|
|
2729
|
|
2730 ho = ngx_list_push(&r->headers_out.headers);
|
|
2731 if (ho == NULL) {
|
|
2732 return NGX_ERROR;
|
|
2733 }
|
|
2734
|
|
2735 *ho = *h;
|
|
2736
|
|
2737 if (r->upstream->rewrite_redirect) {
|
|
2738 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
2739
|
78
|
2740 if (rc == NGX_DECLINED) {
|
|
2741 return NGX_OK;
|
|
2742 }
|
|
2743
|
58
|
2744 if (rc == NGX_OK) {
|
|
2745 r->headers_out.location = ho;
|
|
2746
|
|
2747 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2748 "rewritten location: \"%V\"", &ho->value);
|
|
2749 }
|
|
2750
|
|
2751 return rc;
|
|
2752 }
|
|
2753
|
348
|
2754 if (ho->value.data[0] != '/') {
|
|
2755 r->headers_out.location = ho;
|
|
2756 }
|
|
2757
|
58
|
2758 /*
|
|
2759 * we do not set r->headers_out.location here to avoid the handling
|
|
2760 * the local redirects without a host name by ngx_http_header_filter()
|
|
2761 */
|
|
2762
|
|
2763 return NGX_OK;
|
|
2764 }
|
|
2765
|
|
2766
|
|
2767 static ngx_int_t
|
|
2768 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2769 ngx_uint_t offset)
|
|
2770 {
|
|
2771 u_char *p;
|
|
2772 ngx_int_t rc;
|
|
2773 ngx_table_elt_t *ho;
|
|
2774
|
|
2775 ho = ngx_list_push(&r->headers_out.headers);
|
|
2776 if (ho == NULL) {
|
|
2777 return NGX_ERROR;
|
|
2778 }
|
|
2779
|
|
2780 *ho = *h;
|
|
2781
|
|
2782 if (r->upstream->rewrite_redirect) {
|
|
2783
|
340
|
2784 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
58
|
2785
|
|
2786 if (p) {
|
|
2787 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
2788
|
|
2789 } else {
|
|
2790 return NGX_OK;
|
|
2791 }
|
|
2792
|
78
|
2793 if (rc == NGX_DECLINED) {
|
|
2794 return NGX_OK;
|
|
2795 }
|
|
2796
|
58
|
2797 if (rc == NGX_OK) {
|
348
|
2798 r->headers_out.refresh = ho;
|
|
2799
|
58
|
2800 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2801 "rewritten refresh: \"%V\"", &ho->value);
|
|
2802 }
|
|
2803
|
|
2804 return rc;
|
|
2805 }
|
|
2806
|
348
|
2807 r->headers_out.refresh = ho;
|
|
2808
|
58
|
2809 return NGX_OK;
|
|
2810 }
|
|
2811
|
|
2812
|
|
2813 #if (NGX_HTTP_GZIP)
|
|
2814
|
|
2815 static ngx_int_t
|
|
2816 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
2817 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2818 {
|
|
2819 ngx_table_elt_t *ho;
|
|
2820
|
|
2821 ho = ngx_list_push(&r->headers_out.headers);
|
|
2822 if (ho == NULL) {
|
|
2823 return NGX_ERROR;
|
|
2824 }
|
|
2825
|
|
2826 *ho = *h;
|
|
2827
|
|
2828 r->headers_out.content_encoding = ho;
|
|
2829
|
|
2830 return NGX_OK;
|
|
2831 }
|
|
2832
|
|
2833 #endif
|
|
2834
|
|
2835
|
36
|
2836 static ngx_int_t
|
122
|
2837 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
28
|
2838 {
|
260
|
2839 ngx_http_variable_t *var, *v;
|
28
|
2840
|
122
|
2841 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
2842 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
2843 if (var == NULL) {
|
|
2844 return NGX_ERROR;
|
|
2845 }
|
|
2846
|
186
|
2847 var->get_handler = v->get_handler;
|
122
|
2848 var->data = v->data;
|
|
2849 }
|
|
2850
|
28
|
2851 return NGX_OK;
|
|
2852 }
|
58
|
2853
|
|
2854
|
122
|
2855 static ngx_int_t
|
298
|
2856 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
2857 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2858 {
|
|
2859 u_char *p;
|
|
2860 size_t len;
|
|
2861 ngx_uint_t i;
|
|
2862 ngx_http_upstream_state_t *state;
|
|
2863
|
|
2864 v->valid = 1;
|
340
|
2865 v->no_cacheable = 0;
|
298
|
2866 v->not_found = 0;
|
|
2867
|
|
2868 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
2869 v->not_found = 1;
|
|
2870 return NGX_OK;
|
|
2871 }
|
|
2872
|
|
2873 len = 0;
|
|
2874 state = r->upstream_states->elts;
|
|
2875
|
|
2876 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
2877 if (state[i].peer) {
|
|
2878 len += state[i].peer->len + 2;
|
|
2879
|
|
2880 } else {
|
|
2881 len += 3;
|
|
2882 }
|
|
2883 }
|
|
2884
|
382
|
2885 p = ngx_pnalloc(r->pool, len);
|
298
|
2886 if (p == NULL) {
|
|
2887 return NGX_ERROR;
|
|
2888 }
|
|
2889
|
|
2890 v->data = p;
|
|
2891
|
|
2892 i = 0;
|
|
2893
|
|
2894 for ( ;; ) {
|
|
2895 if (state[i].peer) {
|
|
2896 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
2897 }
|
|
2898
|
|
2899 if (++i == r->upstream_states->nelts) {
|
|
2900 break;
|
|
2901 }
|
|
2902
|
|
2903 if (state[i].peer) {
|
|
2904 *p++ = ',';
|
|
2905 *p++ = ' ';
|
|
2906
|
|
2907 } else {
|
|
2908 *p++ = ' ';
|
|
2909 *p++ = ':';
|
|
2910 *p++ = ' ';
|
|
2911
|
|
2912 if (++i == r->upstream_states->nelts) {
|
|
2913 break;
|
|
2914 }
|
|
2915
|
|
2916 continue;
|
|
2917 }
|
|
2918 }
|
|
2919
|
|
2920 v->len = p - v->data;
|
|
2921
|
|
2922 return NGX_OK;
|
|
2923 }
|
|
2924
|
|
2925
|
|
2926 static ngx_int_t
|
122
|
2927 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
2928 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2929 {
|
|
2930 u_char *p;
|
|
2931 size_t len;
|
|
2932 ngx_uint_t i;
|
|
2933 ngx_http_upstream_state_t *state;
|
|
2934
|
|
2935 v->valid = 1;
|
340
|
2936 v->no_cacheable = 0;
|
122
|
2937 v->not_found = 0;
|
|
2938
|
296
|
2939 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
2940 v->not_found = 1;
|
|
2941 return NGX_OK;
|
|
2942 }
|
|
2943
|
296
|
2944 len = r->upstream_states->nelts * (3 + 2);
|
122
|
2945
|
382
|
2946 p = ngx_pnalloc(r->pool, len);
|
122
|
2947 if (p == NULL) {
|
|
2948 return NGX_ERROR;
|
|
2949 }
|
|
2950
|
|
2951 v->data = p;
|
|
2952
|
|
2953 i = 0;
|
296
|
2954 state = r->upstream_states->elts;
|
122
|
2955
|
|
2956 for ( ;; ) {
|
296
|
2957 if (state[i].status) {
|
|
2958 p = ngx_sprintf(p, "%ui", state[i].status);
|
122
|
2959
|
|
2960 } else {
|
296
|
2961 *p++ = '-';
|
122
|
2962 }
|
|
2963
|
296
|
2964 if (++i == r->upstream_states->nelts) {
|
122
|
2965 break;
|
|
2966 }
|
|
2967
|
296
|
2968 if (state[i].peer) {
|
|
2969 *p++ = ',';
|
|
2970 *p++ = ' ';
|
|
2971
|
|
2972 } else {
|
|
2973 *p++ = ' ';
|
|
2974 *p++ = ':';
|
|
2975 *p++ = ' ';
|
|
2976
|
|
2977 if (++i == r->upstream_states->nelts) {
|
|
2978 break;
|
|
2979 }
|
|
2980
|
|
2981 continue;
|
|
2982 }
|
122
|
2983 }
|
|
2984
|
|
2985 v->len = p - v->data;
|
|
2986
|
|
2987 return NGX_OK;
|
|
2988 }
|
|
2989
|
|
2990
|
|
2991 static ngx_int_t
|
|
2992 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
2993 ngx_http_variable_value_t *v, uintptr_t data)
|
|
2994 {
|
|
2995 u_char *p;
|
|
2996 size_t len;
|
|
2997 ngx_uint_t i;
|
262
|
2998 ngx_msec_int_t ms;
|
122
|
2999 ngx_http_upstream_state_t *state;
|
|
3000
|
|
3001 v->valid = 1;
|
340
|
3002 v->no_cacheable = 0;
|
122
|
3003 v->not_found = 0;
|
|
3004
|
296
|
3005 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3006 v->not_found = 1;
|
|
3007 return NGX_OK;
|
|
3008 }
|
|
3009
|
296
|
3010 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
122
|
3011
|
382
|
3012 p = ngx_pnalloc(r->pool, len);
|
122
|
3013 if (p == NULL) {
|
|
3014 return NGX_ERROR;
|
|
3015 }
|
|
3016
|
|
3017 v->data = p;
|
|
3018
|
|
3019 i = 0;
|
296
|
3020 state = r->upstream_states->elts;
|
122
|
3021
|
|
3022 for ( ;; ) {
|
296
|
3023 if (state[i].status) {
|
346
|
3024 ms = (ngx_msec_int_t)
|
|
3025 (state[i].response_sec * 1000 + state[i].response_msec);
|
262
|
3026 ms = (ms >= 0) ? ms : 0;
|
|
3027 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
296
|
3028
|
|
3029 } else {
|
|
3030 *p++ = '-';
|
122
|
3031 }
|
|
3032
|
296
|
3033 if (++i == r->upstream_states->nelts) {
|
122
|
3034 break;
|
|
3035 }
|
|
3036
|
296
|
3037 if (state[i].peer) {
|
|
3038 *p++ = ',';
|
|
3039 *p++ = ' ';
|
|
3040
|
|
3041 } else {
|
|
3042 *p++ = ' ';
|
|
3043 *p++ = ':';
|
|
3044 *p++ = ' ';
|
|
3045
|
|
3046 if (++i == r->upstream_states->nelts) {
|
|
3047 break;
|
|
3048 }
|
|
3049
|
|
3050 continue;
|
|
3051 }
|
122
|
3052 }
|
|
3053
|
|
3054 v->len = p - v->data;
|
|
3055
|
|
3056 return NGX_OK;
|
|
3057 }
|
|
3058
|
|
3059
|
296
|
3060 ngx_int_t
|
|
3061 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
3062 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3063 {
|
|
3064 if (r->upstream == NULL) {
|
|
3065 v->not_found = 1;
|
|
3066 return NGX_OK;
|
|
3067 }
|
|
3068
|
|
3069 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
3070 &r->upstream->headers_in.headers.part,
|
|
3071 sizeof("upstream_http_") - 1);
|
|
3072 }
|
|
3073
|
|
3074
|
200
|
3075 static char *
|
|
3076 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
3077 {
|
260
|
3078 char *rv;
|
|
3079 void *mconf;
|
|
3080 ngx_str_t *value;
|
|
3081 ngx_url_t u;
|
|
3082 ngx_uint_t m;
|
|
3083 ngx_conf_t pcf;
|
|
3084 ngx_http_module_t *module;
|
|
3085 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
3086 ngx_http_upstream_srv_conf_t *uscf;
|
|
3087
|
|
3088 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3089
|
|
3090 value = cf->args->elts;
|
|
3091 u.host = value[1];
|
|
3092 u.no_resolve = 1;
|
|
3093
|
|
3094 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
3095 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
3096 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
3097 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
3098 |NGX_HTTP_UPSTREAM_DOWN
|
|
3099 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
3100 if (uscf == NULL) {
|
|
3101 return NGX_CONF_ERROR;
|
|
3102 }
|
|
3103
|
200
|
3104
|
|
3105 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
3106 if (ctx == NULL) {
|
|
3107 return NGX_CONF_ERROR;
|
|
3108 }
|
|
3109
|
260
|
3110 http_ctx = cf->ctx;
|
|
3111 ctx->main_conf = http_ctx->main_conf;
|
200
|
3112
|
|
3113 /* the upstream{}'s srv_conf */
|
|
3114
|
|
3115 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3116 if (ctx->srv_conf == NULL) {
|
|
3117 return NGX_CONF_ERROR;
|
|
3118 }
|
|
3119
|
|
3120 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
3121
|
260
|
3122 uscf->srv_conf = ctx->srv_conf;
|
|
3123
|
200
|
3124
|
|
3125 /* the upstream{}'s loc_conf */
|
|
3126
|
|
3127 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3128 if (ctx->loc_conf == NULL) {
|
|
3129 return NGX_CONF_ERROR;
|
|
3130 }
|
|
3131
|
|
3132 for (m = 0; ngx_modules[m]; m++) {
|
|
3133 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
3134 continue;
|
|
3135 }
|
|
3136
|
|
3137 module = ngx_modules[m]->ctx;
|
|
3138
|
260
|
3139 if (module->create_srv_conf) {
|
|
3140 mconf = module->create_srv_conf(cf);
|
|
3141 if (mconf == NULL) {
|
|
3142 return NGX_CONF_ERROR;
|
|
3143 }
|
|
3144
|
|
3145 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3146 }
|
|
3147
|
200
|
3148 if (module->create_loc_conf) {
|
|
3149 mconf = module->create_loc_conf(cf);
|
|
3150 if (mconf == NULL) {
|
|
3151 return NGX_CONF_ERROR;
|
|
3152 }
|
|
3153
|
|
3154 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3155 }
|
|
3156 }
|
|
3157
|
|
3158
|
|
3159 /* parse inside upstream{} */
|
|
3160
|
|
3161 pcf = *cf;
|
|
3162 cf->ctx = ctx;
|
|
3163 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
3164
|
|
3165 rv = ngx_conf_parse(cf, NULL);
|
|
3166
|
|
3167 *cf = pcf;
|
|
3168
|
|
3169 if (rv != NGX_CONF_OK) {
|
|
3170 return rv;
|
|
3171 }
|
|
3172
|
|
3173 if (uscf->servers == NULL) {
|
|
3174 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3175 "no servers are inside upstream");
|
|
3176 return NGX_CONF_ERROR;
|
|
3177 }
|
|
3178
|
|
3179 return rv;
|
|
3180 }
|
|
3181
|
|
3182
|
|
3183 static char *
|
|
3184 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
3185 {
|
|
3186 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
3187
|
260
|
3188 time_t fail_timeout;
|
|
3189 ngx_str_t *value, s;
|
|
3190 ngx_url_t u;
|
|
3191 ngx_int_t weight, max_fails;
|
|
3192 ngx_uint_t i;
|
|
3193 ngx_http_upstream_server_t *us;
|
200
|
3194
|
|
3195 if (uscf->servers == NULL) {
|
260
|
3196 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
3197 sizeof(ngx_http_upstream_server_t));
|
200
|
3198 if (uscf->servers == NULL) {
|
|
3199 return NGX_CONF_ERROR;
|
|
3200 }
|
|
3201 }
|
|
3202
|
260
|
3203 us = ngx_array_push(uscf->servers);
|
|
3204 if (us == NULL) {
|
200
|
3205 return NGX_CONF_ERROR;
|
|
3206 }
|
|
3207
|
260
|
3208 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
3209
|
200
|
3210 value = cf->args->elts;
|
|
3211
|
|
3212 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3213
|
|
3214 u.url = value[1];
|
266
|
3215 u.default_port = 80;
|
200
|
3216
|
340
|
3217 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
200
|
3218 if (u.err) {
|
|
3219 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3220 "%s in upstream \"%V\"", u.err, &u.url);
|
|
3221 }
|
|
3222
|
|
3223 return NGX_CONF_ERROR;
|
|
3224 }
|
|
3225
|
212
|
3226 weight = 1;
|
260
|
3227 max_fails = 1;
|
|
3228 fail_timeout = 10;
|
|
3229
|
|
3230 for (i = 2; i < cf->args->nelts; i++) {
|
|
3231
|
|
3232 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
3233
|
|
3234 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
3235 goto invalid;
|
|
3236 }
|
|
3237
|
|
3238 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
212
|
3239
|
|
3240 if (weight == NGX_ERROR || weight == 0) {
|
|
3241 goto invalid;
|
|
3242 }
|
|
3243
|
260
|
3244 continue;
|
|
3245 }
|
|
3246
|
|
3247 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
3248
|
|
3249 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
3250 goto invalid;
|
|
3251 }
|
|
3252
|
|
3253 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
3254
|
|
3255 if (max_fails == NGX_ERROR) {
|
|
3256 goto invalid;
|
|
3257 }
|
|
3258
|
|
3259 continue;
|
212
|
3260 }
|
260
|
3261
|
|
3262 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
3263
|
|
3264 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
3265 goto invalid;
|
|
3266 }
|
|
3267
|
|
3268 s.len = value[i].len - 13;
|
|
3269 s.data = &value[i].data[13];
|
|
3270
|
|
3271 fail_timeout = ngx_parse_time(&s, 1);
|
|
3272
|
372
|
3273 if (fail_timeout == NGX_ERROR) {
|
260
|
3274 goto invalid;
|
|
3275 }
|
|
3276
|
|
3277 continue;
|
|
3278 }
|
|
3279
|
326
|
3280 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
3281
|
|
3282 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
3283 goto invalid;
|
|
3284 }
|
|
3285
|
|
3286 us->backup = 1;
|
|
3287
|
|
3288 continue;
|
|
3289 }
|
|
3290
|
260
|
3291 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
3292
|
|
3293 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
3294 goto invalid;
|
|
3295 }
|
|
3296
|
|
3297 us->down = 1;
|
|
3298
|
|
3299 continue;
|
|
3300 }
|
|
3301
|
|
3302 goto invalid;
|
212
|
3303 }
|
|
3304
|
260
|
3305 us->addrs = u.addrs;
|
|
3306 us->naddrs = u.naddrs;
|
|
3307 us->weight = weight;
|
|
3308 us->max_fails = max_fails;
|
|
3309 us->fail_timeout = fail_timeout;
|
200
|
3310
|
|
3311 return NGX_CONF_OK;
|
212
|
3312
|
|
3313 invalid:
|
|
3314
|
260
|
3315 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3316 "invalid parameter \"%V\"", &value[i]);
|
212
|
3317
|
|
3318 return NGX_CONF_ERROR;
|
200
|
3319 }
|
|
3320
|
|
3321
|
|
3322 ngx_http_upstream_srv_conf_t *
|
260
|
3323 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
200
|
3324 {
|
|
3325 ngx_uint_t i;
|
260
|
3326 ngx_http_upstream_server_t *us;
|
200
|
3327 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
3328 ngx_http_upstream_main_conf_t *umcf;
|
|
3329
|
260
|
3330 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
3331
|
340
|
3332 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
200
|
3333 if (u->err) {
|
|
3334 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3335 "%s in upstream \"%V\"", u->err, &u->url);
|
|
3336 }
|
|
3337
|
|
3338 return NULL;
|
|
3339 }
|
|
3340 }
|
|
3341
|
|
3342 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
3343
|
|
3344 uscfp = umcf->upstreams.elts;
|
|
3345
|
|
3346 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
266
|
3347
|
|
3348 if (uscfp[i]->host.len != u->host.len
|
260
|
3349 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
3350 != 0)
|
|
3351 {
|
200
|
3352 continue;
|
|
3353 }
|
|
3354
|
260
|
3355 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
3356 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
200
|
3357 {
|
260
|
3358 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3359 "duplicate upstream \"%V\"", &u->host);
|
|
3360 return NULL;
|
200
|
3361 }
|
260
|
3362
|
266
|
3363 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
260
|
3364 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
266
|
3365 "upstream \"%V\" may not have port %d",
|
|
3366 &u->host, u->port);
|
|
3367 return NULL;
|
|
3368 }
|
|
3369
|
|
3370 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
3371 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
3372 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
3373 &u->host, uscfp[i]->port,
|
336
|
3374 uscfp[i]->file_name, uscfp[i]->line);
|
266
|
3375 return NULL;
|
|
3376 }
|
|
3377
|
|
3378 if (uscfp[i]->port != u->port) {
|
|
3379 continue;
|
260
|
3380 }
|
|
3381
|
324
|
3382 if (uscfp[i]->default_port && u->default_port
|
|
3383 && uscfp[i]->default_port != u->default_port)
|
|
3384 {
|
|
3385 continue;
|
|
3386 }
|
|
3387
|
260
|
3388 return uscfp[i];
|
200
|
3389 }
|
|
3390
|
|
3391 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
3392 if (uscf == NULL) {
|
|
3393 return NULL;
|
|
3394 }
|
|
3395
|
260
|
3396 uscf->flags = flags;
|
200
|
3397 uscf->host = u->host;
|
336
|
3398 uscf->file_name = cf->conf_file->file.name.data;
|
200
|
3399 uscf->line = cf->conf_file->line;
|
266
|
3400 uscf->port = u->port;
|
|
3401 uscf->default_port = u->default_port;
|
260
|
3402
|
|
3403 if (u->naddrs == 1) {
|
|
3404 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
3405 sizeof(ngx_http_upstream_server_t));
|
|
3406 if (uscf->servers == NULL) {
|
|
3407 return NGX_CONF_ERROR;
|
|
3408 }
|
|
3409
|
|
3410 us = ngx_array_push(uscf->servers);
|
|
3411 if (us == NULL) {
|
|
3412 return NGX_CONF_ERROR;
|
|
3413 }
|
|
3414
|
|
3415 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
3416
|
|
3417 us->addrs = u->addrs;
|
|
3418 us->naddrs = u->naddrs;
|
|
3419 }
|
200
|
3420
|
|
3421 uscfp = ngx_array_push(&umcf->upstreams);
|
|
3422 if (uscfp == NULL) {
|
|
3423 return NULL;
|
|
3424 }
|
|
3425
|
|
3426 *uscfp = uscf;
|
|
3427
|
|
3428 return uscf;
|
|
3429 }
|
|
3430
|
|
3431
|
356
|
3432 ngx_int_t
|
|
3433 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
3434 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
3435 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
3436 {
|
|
3437 ngx_str_t *h;
|
|
3438 ngx_uint_t i, j;
|
|
3439 ngx_array_t hide_headers;
|
|
3440 ngx_hash_key_t *hk;
|
|
3441
|
|
3442 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
3443 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
3444 {
|
|
3445 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
3446
|
|
3447 if (conf->hide_headers_hash.buckets) {
|
|
3448 return NGX_OK;
|
|
3449 }
|
|
3450
|
|
3451 conf->hide_headers = prev->hide_headers;
|
|
3452 conf->pass_headers = prev->pass_headers;
|
|
3453
|
|
3454 } else {
|
|
3455 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
3456 conf->hide_headers = prev->hide_headers;
|
|
3457 }
|
|
3458
|
|
3459 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
3460 conf->pass_headers = prev->pass_headers;
|
|
3461 }
|
|
3462 }
|
|
3463
|
|
3464 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
3465 != NGX_OK)
|
|
3466 {
|
|
3467 return NGX_ERROR;
|
|
3468 }
|
|
3469
|
|
3470 for (h = default_hide_headers; h->len; h++) {
|
|
3471 hk = ngx_array_push(&hide_headers);
|
|
3472 if (hk == NULL) {
|
|
3473 return NGX_ERROR;
|
|
3474 }
|
|
3475
|
|
3476 hk->key = *h;
|
|
3477 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
3478 hk->value = (void *) 1;
|
|
3479 }
|
|
3480
|
|
3481 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
3482
|
|
3483 h = conf->hide_headers->elts;
|
|
3484
|
|
3485 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
3486
|
|
3487 hk = hide_headers.elts;
|
|
3488
|
|
3489 for (j = 0; j < hide_headers.nelts; j++) {
|
|
3490 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
3491 goto exist;
|
|
3492 }
|
|
3493 }
|
|
3494
|
|
3495 hk = ngx_array_push(&hide_headers);
|
|
3496 if (hk == NULL) {
|
|
3497 return NGX_ERROR;
|
|
3498 }
|
|
3499
|
|
3500 hk->key = h[i];
|
|
3501 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
3502 hk->value = (void *) 1;
|
|
3503
|
|
3504 exist:
|
|
3505
|
|
3506 continue;
|
|
3507 }
|
|
3508 }
|
|
3509
|
|
3510 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
3511
|
|
3512 h = conf->pass_headers->elts;
|
|
3513 hk = hide_headers.elts;
|
|
3514
|
|
3515 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
3516 for (j = 0; j < hide_headers.nelts; j++) {
|
|
3517
|
|
3518 if (hk[j].key.data == NULL) {
|
|
3519 continue;
|
|
3520 }
|
|
3521
|
|
3522 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
3523 hk[j].key.data = NULL;
|
|
3524 break;
|
|
3525 }
|
|
3526 }
|
|
3527 }
|
|
3528 }
|
|
3529
|
|
3530 hash->hash = &conf->hide_headers_hash;
|
|
3531 hash->key = ngx_hash_key_lc;
|
|
3532 hash->pool = cf->pool;
|
|
3533 hash->temp_pool = NULL;
|
|
3534
|
|
3535 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
3536 }
|
|
3537
|
|
3538
|
58
|
3539 static void *
|
|
3540 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
3541 {
|
|
3542 ngx_http_upstream_main_conf_t *umcf;
|
|
3543
|
|
3544 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
3545 if (umcf == NULL) {
|
|
3546 return NULL;
|
|
3547 }
|
|
3548
|
200
|
3549 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
3550 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
3551 != NGX_OK)
|
|
3552 {
|
|
3553 return NGX_CONF_ERROR;
|
|
3554 }
|
|
3555
|
58
|
3556 return umcf;
|
|
3557 }
|
|
3558
|
|
3559
|
|
3560 static char *
|
200
|
3561 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
58
|
3562 {
|
|
3563 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
3564
|
200
|
3565 ngx_uint_t i;
|
|
3566 ngx_array_t headers_in;
|
|
3567 ngx_hash_key_t *hk;
|
|
3568 ngx_hash_init_t hash;
|
260
|
3569 ngx_http_upstream_init_pt init;
|
200
|
3570 ngx_http_upstream_header_t *header;
|
|
3571 ngx_http_upstream_srv_conf_t **uscfp;
|
|
3572
|
|
3573 uscfp = umcf->upstreams.elts;
|
|
3574
|
|
3575 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
260
|
3576
|
|
3577 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
3578 ngx_http_upstream_init_round_robin;
|
|
3579
|
|
3580 if (init(cf, uscfp[i]) != NGX_OK) {
|
200
|
3581 return NGX_CONF_ERROR;
|
|
3582 }
|
|
3583 }
|
198
|
3584
|
212
|
3585
|
260
|
3586 /* upstream_headers_in_hash */
|
|
3587
|
198
|
3588 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
3589 != NGX_OK)
|
58
|
3590 {
|
|
3591 return NGX_CONF_ERROR;
|
|
3592 }
|
|
3593
|
198
|
3594 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
3595 hk = ngx_array_push(&headers_in);
|
|
3596 if (hk == NULL) {
|
|
3597 return NGX_CONF_ERROR;
|
|
3598 }
|
|
3599
|
|
3600 hk->key = header->name;
|
|
3601 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
3602 hk->value = header;
|
|
3603 }
|
|
3604
|
|
3605 hash.hash = &umcf->headers_in_hash;
|
|
3606 hash.key = ngx_hash_key_lc;
|
|
3607 hash.max_size = 512;
|
244
|
3608 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
198
|
3609 hash.name = "upstream_headers_in_hash";
|
|
3610 hash.pool = cf->pool;
|
|
3611 hash.temp_pool = NULL;
|
|
3612
|
|
3613 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
3614 return NGX_CONF_ERROR;
|
|
3615 }
|
58
|
3616
|
|
3617 return NGX_CONF_OK;
|
|
3618 }
|