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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503
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12 #if (NGX_HTTP_CACHE)
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13 static ngx_int_t ngx_http_upstream_cache(ngx_http_request_t *r,
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14 ngx_http_upstream_t *u);
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15 static ngx_int_t ngx_http_upstream_cache_send(ngx_http_request_t *r,
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16 ngx_http_upstream_t *u);
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17 #endif
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18
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348
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19 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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20 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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21 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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22 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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23 ngx_event_t *ev);
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28
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24 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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25 ngx_http_upstream_t *u);
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58
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26 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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27 ngx_http_upstream_t *u);
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28
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28 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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29 ngx_http_upstream_t *u);
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459
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30 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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31 ngx_http_upstream_t *u);
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32 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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33 ngx_http_upstream_t *u);
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440
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34 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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35 ngx_http_upstream_t *u);
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36 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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37 ngx_http_upstream_t *u);
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294
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38 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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503
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39 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
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40 ngx_http_upstream_t *u);
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459
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41 static void ngx_http_upstream_process_body_in_memory(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_send_response(ngx_http_request_t *r,
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36
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44 ngx_http_upstream_t *u);
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130
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45 static void
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46 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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459
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47 static void
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48 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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49 ngx_http_upstream_t *u);
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457
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50 static void
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51 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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52 ngx_uint_t do_write);
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130
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53 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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54 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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55 ssize_t bytes);
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58
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56 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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459
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57 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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58 ngx_http_upstream_t *u);
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457
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59 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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60 static void ngx_http_upstream_store(ngx_http_request_t *r,
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61 ngx_http_upstream_t *u);
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459
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62 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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63 ngx_http_upstream_t *u);
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28
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64 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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65 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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66 static void ngx_http_upstream_cleanup(void *data);
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28
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67 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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68 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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69
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58
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70 static ngx_int_t ngx_http_upstream_process_header_line(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
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512
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73 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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58
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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75 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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76 ngx_table_elt_t *h, ngx_uint_t offset);
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512
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77 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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78 ngx_table_elt_t *h, ngx_uint_t offset);
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79 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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80 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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81 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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82 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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83 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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84 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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85 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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86 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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87 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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88 ngx_table_elt_t *h, ngx_uint_t offset);
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89 static ngx_int_t
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90 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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91 ngx_table_elt_t *h, ngx_uint_t offset);
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92 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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93 ngx_table_elt_t *h, ngx_uint_t offset);
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94 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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95 ngx_table_elt_t *h, ngx_uint_t offset);
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503
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96 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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97 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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98 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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99 ngx_table_elt_t *h, ngx_uint_t offset);
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100 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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101 ngx_table_elt_t *h, ngx_uint_t offset);
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503
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102 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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103 ngx_table_elt_t *h, ngx_uint_t offset);
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104
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58
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105 #if (NGX_HTTP_GZIP)
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106 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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107 ngx_table_elt_t *h, ngx_uint_t offset);
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108 #endif
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109
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122
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110 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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111 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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112 ngx_http_variable_value_t *v, uintptr_t data);
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122
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113 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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114 ngx_http_variable_value_t *v, uintptr_t data);
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115 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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116 ngx_http_variable_value_t *v, uintptr_t data);
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459
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117 static ngx_int_t ngx_http_upstream_response_length_variable(
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118 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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119
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200
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120 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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121 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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122 void *conf);
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123
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58
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124 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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125 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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126
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126
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127 #if (NGX_HTTP_SSL)
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140
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128 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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129 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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130 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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131 #endif
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132
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58
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133
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134 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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135
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136 { ngx_string("Status"),
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137 ngx_http_upstream_process_header_line,
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138 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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139 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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140
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141 { ngx_string("Content-Type"),
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142 ngx_http_upstream_process_header_line,
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143 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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144 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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145
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146 { ngx_string("Content-Length"),
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147 ngx_http_upstream_process_header_line,
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148 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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149 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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150
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151 { ngx_string("Date"),
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152 ngx_http_upstream_process_header_line,
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153 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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154 ngx_http_upstream_copy_header_line,
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155 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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156
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318
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157 { ngx_string("Last-Modified"),
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158 ngx_http_upstream_process_header_line,
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159 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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503
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160 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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161
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58
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162 { ngx_string("Server"),
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163 ngx_http_upstream_process_header_line,
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164 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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165 ngx_http_upstream_copy_header_line,
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166 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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167
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78
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168 { ngx_string("WWW-Authenticate"),
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169 ngx_http_upstream_process_header_line,
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170 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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171 ngx_http_upstream_copy_header_line, 0, 0 },
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172
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58
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173 { ngx_string("Location"),
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392
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174 ngx_http_upstream_process_header_line,
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175 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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176 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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177
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178 { ngx_string("Refresh"),
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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_rewrite_refresh, 0, 0 },
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181
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182 { ngx_string("Set-Cookie"),
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183 ngx_http_upstream_ignore_header_line, 0,
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80
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184 ngx_http_upstream_copy_header_line, 0, 1 },
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185
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186 { ngx_string("Content-Disposition"),
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187 ngx_http_upstream_ignore_header_line, 0,
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188 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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189
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190 { ngx_string("Cache-Control"),
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512
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191 ngx_http_upstream_process_cache_control, 0,
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58
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192 ngx_http_upstream_copy_multi_header_lines,
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64
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193 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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194
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122
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195 { ngx_string("Expires"),
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512
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196 ngx_http_upstream_process_expires, 0,
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122
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197 ngx_http_upstream_copy_header_line,
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198 offsetof(ngx_http_headers_out_t, expires), 1 },
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199
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126
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200 { ngx_string("Accept-Ranges"),
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201 ngx_http_upstream_process_header_line,
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202 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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503
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203 ngx_http_upstream_copy_allow_ranges,
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126
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204 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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205
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58
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206 { ngx_string("Connection"),
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207 ngx_http_upstream_ignore_header_line, 0,
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64
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208 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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209
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190
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210 { ngx_string("Keep-Alive"),
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211 ngx_http_upstream_ignore_header_line, 0,
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212 ngx_http_upstream_ignore_header_line, 0, 0 },
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213
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58
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214 { ngx_string("X-Powered-By"),
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215 ngx_http_upstream_ignore_header_line, 0,
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198
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216 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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217
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218 { ngx_string("X-Accel-Expires"),
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512
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219 ngx_http_upstream_process_accel_expires, 0,
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198
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220 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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221
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222 { ngx_string("X-Accel-Redirect"),
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223 ngx_http_upstream_process_header_line,
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224 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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225 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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226
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76
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227 { ngx_string("X-Accel-Limit-Rate"),
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228 ngx_http_upstream_process_limit_rate, 0,
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229 ngx_http_upstream_ignore_header_line, 0, 0 },
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230
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198
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231 { ngx_string("X-Accel-Buffering"),
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232 ngx_http_upstream_process_buffering, 0,
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233 ngx_http_upstream_ignore_header_line, 0, 0 },
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234
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206
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235 { ngx_string("X-Accel-Charset"),
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236 ngx_http_upstream_process_charset, 0,
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237 ngx_http_upstream_ignore_header_line, 0, 0 },
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238
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58
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239 #if (NGX_HTTP_GZIP)
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240 { ngx_string("Content-Encoding"),
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241 ngx_http_upstream_process_header_line,
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242 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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243 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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244 #endif
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245
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64
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246 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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247 };
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28
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248
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249
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200
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250 static ngx_command_t ngx_http_upstream_commands[] = {
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251
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252 { ngx_string("upstream"),
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253 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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254 ngx_http_upstream,
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255 0,
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256 0,
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257 NULL },
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258
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259 { ngx_string("server"),
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260
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260 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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261 ngx_http_upstream_server,
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262 NGX_HTTP_SRV_CONF_OFFSET,
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263 0,
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264 NULL },
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265
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266 ngx_null_command
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267 };
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268
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269
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270 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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271 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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272 NULL, /* postconfiguration */
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273
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274 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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275 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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276
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277 NULL, /* create server configuration */
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278 NULL, /* merge server configuration */
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279
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280 NULL, /* create location configuration */
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281 NULL /* merge location configuration */
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282 };
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126
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283
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28
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284
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285 ngx_module_t ngx_http_upstream_module = {
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58
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286 NGX_MODULE_V1,
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28
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287 &ngx_http_upstream_module_ctx, /* module context */
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200
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288 ngx_http_upstream_commands, /* module directives */
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28
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289 NGX_HTTP_MODULE, /* module type */
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90
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290 NULL, /* init master */
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28
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291 NULL, /* init module */
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90
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292 NULL, /* init process */
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293 NULL, /* init thread */
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294 NULL, /* exit thread */
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295 NULL, /* exit process */
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296 NULL, /* exit master */
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297 NGX_MODULE_V1_PADDING
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28
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298 };
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299
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300
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122
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301 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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302
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298
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303 { ngx_string("upstream_addr"), NULL,
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455
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304 ngx_http_upstream_addr_variable, 0,
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305 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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306
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186
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307 { ngx_string("upstream_status"), NULL,
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455
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308 ngx_http_upstream_status_variable, 0,
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309 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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310
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186
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311 { ngx_string("upstream_response_time"), NULL,
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455
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312 ngx_http_upstream_response_time_variable, 0,
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313 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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314
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459
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315 { ngx_string("upstream_response_length"), NULL,
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316 ngx_http_upstream_response_length_variable, 0,
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317 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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318
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186
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319 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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320 };
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321
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322
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440
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323 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
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324 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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325 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
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326 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
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327 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
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328 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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329 { 0, 0 }
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330 };
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331
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36
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332 void
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333 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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334 {
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348
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335 ngx_str_t *host;
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336 ngx_uint_t i;
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337 ngx_connection_t *c;
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338 ngx_resolver_ctx_t *ctx, temp;
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339 ngx_http_cleanup_t *cln;
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340 ngx_http_upstream_t *u;
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341 ngx_http_core_loc_conf_t *clcf;
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342 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
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343 ngx_http_upstream_main_conf_t *umcf;
|
28
|
344
|
|
345 c = r->connection;
|
|
346
|
|
347 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
348 "http init upstream, client timer: %d", c->read->timer_set);
|
|
349
|
|
350 if (c->read->timer_set) {
|
|
351 ngx_del_timer(c->read);
|
|
352 }
|
|
353
|
178
|
354 u = r->upstream;
|
|
355
|
522
|
356 u->store = (u->conf->store || u->conf->store_lengths);
|
|
357
|
|
358 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
164
|
359 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
360 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
361 }
|
126
|
362
|
28
|
363 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
364
|
|
365 if (!c->write->active) {
|
80
|
366 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
367 == NGX_ERROR)
|
28
|
368 {
|
|
369 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
370 return;
|
|
371 }
|
|
372 }
|
|
373 }
|
|
374
|
86
|
375 if (r->request_body) {
|
|
376 u->request_bufs = r->request_body->bufs;
|
|
377 }
|
58
|
378
|
503
|
379 #if (NGX_HTTP_CACHE)
|
|
380
|
|
381 if (u->conf->cache) {
|
|
382 ngx_int_t rc;
|
|
383
|
|
384 rc = ngx_http_upstream_cache(r, u);
|
|
385
|
|
386 if (rc == NGX_DONE) {
|
|
387 return;
|
|
388 }
|
|
389
|
|
390 if (rc != NGX_DECLINED) {
|
|
391 ngx_http_finalize_request(r, rc);
|
|
392 return;
|
|
393 }
|
|
394 }
|
|
395
|
|
396 #endif
|
|
397
|
86
|
398 if (u->create_request(r) != NGX_OK) {
|
28
|
399 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
400 return;
|
|
401 }
|
|
402
|
58
|
403 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
28
|
404
|
|
405 u->output.pool = r->pool;
|
|
406 u->output.bufs.num = 1;
|
58
|
407 u->output.bufs.size = clcf->client_body_buffer_size;
|
28
|
408 u->output.output_filter = ngx_chain_writer;
|
|
409 u->output.filter_ctx = &u->writer;
|
|
410
|
|
411 u->writer.pool = r->pool;
|
|
412
|
296
|
413 if (r->upstream_states == NULL) {
|
|
414
|
|
415 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
416 sizeof(ngx_http_upstream_state_t));
|
|
417 if (r->upstream_states == NULL) {
|
|
418 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
419 return;
|
|
420 }
|
|
421
|
|
422 } else {
|
|
423
|
|
424 u->state = ngx_array_push(r->upstream_states);
|
|
425 if (u->state == NULL) {
|
|
426 ngx_http_upstream_finalize_request(r, u,
|
|
427 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
428 return;
|
|
429 }
|
|
430
|
|
431 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
28
|
432 }
|
|
433
|
142
|
434 cln = ngx_http_cleanup_add(r, 0);
|
118
|
435 if (cln == NULL) {
|
|
436 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
437 return;
|
|
438 }
|
|
439
|
|
440 cln->handler = ngx_http_upstream_cleanup;
|
|
441 cln->data = r;
|
|
442 u->cleanup = &cln->handler;
|
|
443
|
348
|
444 if (u->resolved == NULL) {
|
|
445
|
|
446 uscf = u->conf->upstream;
|
|
447
|
|
448 } else {
|
|
449
|
463
|
450 if (u->resolved->sockaddr) {
|
|
451
|
|
452 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
453 != NGX_OK)
|
|
454 {
|
|
455 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
456 return;
|
|
457 }
|
|
458
|
|
459 ngx_http_upstream_connect(r, u);
|
|
460
|
|
461 return;
|
|
462 }
|
|
463
|
356
|
464 host = &u->resolved->host;
|
348
|
465
|
|
466 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
467
|
|
468 uscfp = umcf->upstreams.elts;
|
|
469
|
|
470 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
471
|
|
472 uscf = uscfp[i];
|
|
473
|
|
474 if (uscf->host.len == host->len
|
445
|
475 && ((uscf->port == 0 && u->resolved->no_port)
|
366
|
476 || uscf->port == u->resolved->port)
|
348
|
477 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
478 {
|
|
479 goto found;
|
|
480 }
|
|
481 }
|
|
482
|
|
483 temp.name = *host;
|
|
484
|
|
485 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
486 if (ctx == NULL) {
|
|
487 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
488 return;
|
|
489 }
|
|
490
|
354
|
491 if (ctx == NGX_NO_RESOLVER) {
|
|
492 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
493 "no resolver defined to resolve %V", host);
|
|
494
|
|
495 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
496 return;
|
|
497 }
|
|
498
|
348
|
499 ctx->name = *host;
|
|
500 ctx->type = NGX_RESOLVE_A;
|
|
501 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
502 ctx->data = r;
|
|
503 ctx->timeout = clcf->resolver_timeout;
|
|
504
|
372
|
505 u->resolved->ctx = ctx;
|
|
506
|
348
|
507 if (ngx_resolve_name(ctx) != NGX_OK) {
|
372
|
508 u->resolved->ctx = NULL;
|
348
|
509 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
510 return;
|
|
511 }
|
|
512
|
|
513 return;
|
|
514 }
|
|
515
|
|
516 found:
|
|
517
|
|
518 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
519 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
520 return;
|
|
521 }
|
|
522
|
28
|
523 ngx_http_upstream_connect(r, u);
|
|
524 }
|
|
525
|
|
526
|
503
|
527 #if (NGX_HTTP_CACHE)
|
|
528
|
|
529 static ngx_int_t
|
|
530 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
531 {
|
|
532 ngx_int_t rc;
|
|
533 ngx_http_cache_t *c;
|
|
534
|
520
|
535 if (!(r->method & (NGX_HTTP_GET|NGX_HTTP_HEAD))) {
|
512
|
536 return NGX_DECLINED;
|
|
537 }
|
|
538
|
520
|
539 if (r->method & NGX_HTTP_HEAD) {
|
|
540 u->method = ngx_http_core_get_method;
|
|
541 }
|
|
542
|
503
|
543 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
|
|
544 if (c == NULL) {
|
|
545 return NGX_ERROR;
|
|
546 }
|
|
547
|
|
548 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
|
|
549 return NGX_ERROR;
|
|
550 }
|
|
551
|
|
552 r->cache = c;
|
|
553 c->file.log = r->connection->log;
|
|
554
|
|
555 if (u->create_key(r) != NGX_OK) {
|
|
556 return NGX_ERROR;
|
|
557 }
|
|
558
|
|
559 /* TODO: add keys */
|
|
560
|
|
561 ngx_http_file_cache_create_key(r);
|
|
562
|
|
563 u->cacheable = 1;
|
|
564
|
|
565 c->min_uses = r->upstream->conf->cache_min_uses;
|
|
566 c->body_start = r->upstream->conf->buffer_size;
|
|
567 c->file_cache = u->conf->cache->data;
|
|
568
|
|
569 rc = ngx_http_file_cache_open(r);
|
|
570
|
|
571 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
572 "http upstream cache: %i u:%ui", rc, c->uses);
|
|
573
|
|
574 if (rc == NGX_OK) {
|
|
575
|
|
576 rc = ngx_http_upstream_cache_send(r, u);
|
|
577
|
|
578 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
579 return rc;
|
|
580 }
|
|
581
|
|
582 } else if (rc == NGX_ERROR) {
|
|
583
|
|
584 return NGX_ERROR;
|
|
585
|
|
586 } else if (rc == NGX_HTTP_CACHE_STALE) {
|
|
587
|
512
|
588 c->valid_sec = 0;
|
503
|
589 u->stale_cache = 1;
|
|
590 u->buffer.start = NULL;
|
|
591
|
|
592 } else if (rc == NGX_DECLINED) {
|
|
593
|
|
594 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
595 u->buffer.start = NULL;
|
|
596
|
|
597 } else {
|
|
598 u->buffer.pos = u->buffer.start + c->header_start;
|
|
599 u->buffer.last = u->buffer.pos;
|
|
600 }
|
|
601
|
|
602 } else if (rc == NGX_AGAIN) {
|
|
603
|
|
604 u->cacheable = 0;
|
|
605
|
|
606 } else {
|
|
607
|
|
608 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
609
|
|
610 return rc;
|
|
611 }
|
|
612
|
|
613 r->cached = 0;
|
|
614
|
|
615 return NGX_DECLINED;
|
|
616 }
|
|
617
|
|
618
|
|
619 static ngx_int_t
|
|
620 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
621 {
|
|
622 ngx_int_t rc;
|
|
623 ngx_http_cache_t *c;
|
|
624
|
|
625 c = r->cache;
|
|
626
|
|
627 /* TODO: cache stack */
|
|
628
|
|
629 u->buffer = *c->buf;
|
|
630 u->buffer.pos += c->header_start;
|
|
631
|
|
632 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
633
|
|
634 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
635 sizeof(ngx_table_elt_t))
|
|
636 != NGX_OK)
|
|
637 {
|
|
638 return NGX_ERROR;
|
|
639 }
|
|
640
|
|
641 rc = u->process_header(r);
|
|
642
|
|
643 if (rc == NGX_OK) {
|
|
644
|
|
645 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
646 return NGX_DONE;
|
|
647 }
|
|
648
|
|
649 return ngx_http_cache_send(r);
|
|
650 }
|
|
651
|
|
652 if (rc == NGX_ERROR) {
|
|
653 return NGX_ERROR;
|
|
654 }
|
|
655
|
|
656 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
657
|
|
658 /* TODO: delete file */
|
|
659
|
|
660 return rc;
|
|
661 }
|
|
662
|
|
663 #endif
|
|
664
|
|
665
|
36
|
666 static void
|
348
|
667 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
668 {
|
|
669 ngx_http_request_t *r;
|
|
670 ngx_http_upstream_resolved_t *ur;
|
|
671
|
|
672 r = ctx->data;
|
|
673
|
|
674 r->upstream->resolved->ctx = NULL;
|
|
675
|
|
676 if (ctx->state) {
|
|
677 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
678 "%V could not be resolved (%i: %s)",
|
|
679 &ctx->name, ctx->state,
|
|
680 ngx_resolver_strerror(ctx->state));
|
|
681
|
|
682 ngx_resolve_name_done(ctx);
|
|
683 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
684 return;
|
|
685 }
|
|
686
|
|
687 ur = r->upstream->resolved;
|
|
688 ur->naddrs = ctx->naddrs;
|
|
689 ur->addrs = ctx->addrs;
|
|
690
|
|
691 #if (NGX_DEBUG)
|
|
692 {
|
|
693 in_addr_t addr;
|
|
694 ngx_uint_t i;
|
|
695
|
|
696 for (i = 0; i < ctx->naddrs; i++) {
|
|
697 addr = ntohl(ur->addrs[i]);
|
|
698
|
|
699 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
700 "name was resolved to %ud.%ud.%ud.%ud",
|
|
701 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
702 (addr >> 8) & 0xff, addr & 0xff);
|
|
703 }
|
|
704 }
|
|
705 #endif
|
|
706
|
|
707 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
708 ngx_resolve_name_done(ctx);
|
|
709 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
710 return;
|
|
711 }
|
|
712
|
|
713 ngx_resolve_name_done(ctx);
|
|
714
|
|
715 ngx_http_upstream_connect(r, r->upstream);
|
|
716 }
|
|
717
|
|
718
|
|
719 static void
|
455
|
720 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
721 {
|
|
722 ngx_connection_t *c;
|
|
723 ngx_http_request_t *r;
|
|
724 ngx_http_log_ctx_t *ctx;
|
|
725 ngx_http_upstream_t *u;
|
|
726
|
|
727 c = ev->data;
|
|
728 r = c->data;
|
|
729
|
|
730 u = r->upstream;
|
|
731 c = r->connection;
|
|
732
|
|
733 ctx = c->log->data;
|
|
734 ctx->current_request = r;
|
|
735
|
|
736 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
737 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
738
|
|
739 if (ev->write) {
|
459
|
740 u->write_event_handler(r, u);
|
455
|
741
|
|
742 } else {
|
459
|
743 u->read_event_handler(r, u);
|
455
|
744 }
|
|
745
|
|
746 ngx_http_run_posted_requests(c);
|
|
747 }
|
|
748
|
|
749
|
|
750 static void
|
58
|
751 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
752 {
|
|
753 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
754 }
|
|
755
|
|
756
|
|
757 static void
|
|
758 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
759 {
|
|
760 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
761 }
|
|
762
|
|
763
|
|
764 static void
|
|
765 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
766 ngx_event_t *ev)
|
28
|
767 {
|
|
768 int n;
|
|
769 char buf[1];
|
126
|
770 ngx_err_t err;
|
28
|
771 ngx_connection_t *c;
|
|
772 ngx_http_upstream_t *u;
|
|
773
|
76
|
774 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
775 "http upstream check client, write event:%d, \"%V\"",
|
|
776 ev->write, &r->uri);
|
28
|
777
|
58
|
778 c = r->connection;
|
32
|
779 u = r->upstream;
|
|
780
|
132
|
781 if (c->error) {
|
522
|
782 if (!u->cacheable) {
|
|
783 ngx_http_upstream_finalize_request(r, u,
|
|
784 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
785 }
|
76
|
786 return;
|
|
787 }
|
|
788
|
32
|
789 if (u->peer.connection == NULL) {
|
|
790 return;
|
|
791 }
|
|
792
|
28
|
793 #if (NGX_HAVE_KQUEUE)
|
|
794
|
|
795 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
796
|
|
797 if (!ev->pending_eof) {
|
|
798 return;
|
|
799 }
|
|
800
|
|
801 ev->eof = 1;
|
132
|
802 c->error = 1;
|
28
|
803
|
|
804 if (ev->kq_errno) {
|
|
805 ev->error = 1;
|
|
806 }
|
|
807
|
522
|
808 if (!u->cacheable && u->peer.connection) {
|
28
|
809 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
76
|
810 "kevent() reported that client closed prematurely "
|
|
811 "connection, so upstream connection is closed too");
|
28
|
812 ngx_http_upstream_finalize_request(r, u,
|
|
813 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
814 return;
|
|
815 }
|
|
816
|
|
817 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
818 "kevent() reported that client closed "
|
|
819 "prematurely connection");
|
|
820
|
|
821 if (u->peer.connection == NULL) {
|
|
822 ngx_http_upstream_finalize_request(r, u,
|
|
823 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
824 return;
|
|
825 }
|
|
826
|
|
827 return;
|
|
828 }
|
|
829
|
|
830 #endif
|
|
831
|
|
832 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
833
|
|
834 err = ngx_socket_errno;
|
|
835
|
286
|
836 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
837 "http upstream recv(): %d", n);
|
|
838
|
28
|
839 /*
|
|
840 * we do not need to disable the write event because
|
|
841 * that event has NGX_USE_CLEAR_EVENT type
|
|
842 */
|
|
843
|
|
844 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
845 return;
|
|
846 }
|
|
847
|
|
848 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
849 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
850 ngx_http_upstream_finalize_request(r, u,
|
|
851 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
852 return;
|
|
853 }
|
|
854 }
|
|
855
|
|
856 if (n > 0) {
|
|
857 return;
|
|
858 }
|
|
859
|
|
860 if (n == -1) {
|
|
861 if (err == NGX_EAGAIN) {
|
|
862 return;
|
|
863 }
|
|
864
|
|
865 ev->error = 1;
|
|
866
|
32
|
867 } else { /* n == 0 */
|
28
|
868 err = 0;
|
|
869 }
|
|
870
|
78
|
871 ev->eof = 1;
|
132
|
872 c->error = 1;
|
78
|
873
|
522
|
874 if (!u->cacheable && u->peer.connection) {
|
28
|
875 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
876 "client closed prematurely connection, "
|
|
877 "so upstream connection is closed too");
|
|
878 ngx_http_upstream_finalize_request(r, u,
|
|
879 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
880 return;
|
|
881 }
|
|
882
|
|
883 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
884 "client closed prematurely connection");
|
|
885
|
|
886 if (u->peer.connection == NULL) {
|
|
887 ngx_http_upstream_finalize_request(r, u,
|
|
888 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
889 return;
|
|
890 }
|
|
891 }
|
|
892
|
|
893
|
36
|
894 static void
|
|
895 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
896 {
|
140
|
897 ngx_int_t rc;
|
214
|
898 ngx_time_t *tp;
|
140
|
899 ngx_connection_t *c;
|
28
|
900
|
32
|
901 r->connection->log->action = "connecting to upstream";
|
28
|
902
|
|
903 r->connection->single_connection = 0;
|
|
904
|
262
|
905 if (u->state && u->state->response_sec) {
|
214
|
906 tp = ngx_timeofday();
|
262
|
907 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
908 u->state->response_msec = tp->msec - u->state->response_msec;
|
214
|
909 }
|
|
910
|
296
|
911 u->state = ngx_array_push(r->upstream_states);
|
214
|
912 if (u->state == NULL) {
|
|
913 ngx_http_upstream_finalize_request(r, u,
|
|
914 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
915 return;
|
|
916 }
|
|
917
|
|
918 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
919
|
|
920 tp = ngx_timeofday();
|
262
|
921 u->state->response_sec = tp->sec;
|
|
922 u->state->response_msec = tp->msec;
|
214
|
923
|
28
|
924 rc = ngx_event_connect_peer(&u->peer);
|
|
925
|
|
926 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
927 "http upstream connect: %i", rc);
|
|
928
|
|
929 if (rc == NGX_ERROR) {
|
|
930 ngx_http_upstream_finalize_request(r, u,
|
|
931 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
932 return;
|
|
933 }
|
|
934
|
356
|
935 u->state->peer = u->peer.name;
|
|
936
|
92
|
937 if (rc == NGX_BUSY) {
|
|
938 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
326
|
939 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
940 return;
|
92
|
941 }
|
|
942
|
326
|
943 if (rc == NGX_DECLINED) {
|
28
|
944 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
945 return;
|
|
946 }
|
|
947
|
126
|
948 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
949
|
28
|
950 c = u->peer.connection;
|
|
951
|
|
952 c->data = r;
|
140
|
953
|
455
|
954 c->write->handler = ngx_http_upstream_handler;
|
|
955 c->read->handler = ngx_http_upstream_handler;
|
|
956
|
|
957 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
958 u->read_event_handler = ngx_http_upstream_process_header;
|
28
|
959
|
326
|
960 c->sendfile &= r->connection->sendfile;
|
372
|
961 u->output.sendfile = c->sendfile;
|
28
|
962
|
|
963 c->pool = r->pool;
|
|
964 c->read->log = c->write->log = c->log = r->connection->log;
|
|
965
|
|
966 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
967
|
|
968 u->writer.out = NULL;
|
|
969 u->writer.last = &u->writer.out;
|
|
970 u->writer.connection = c;
|
|
971 u->writer.limit = 0;
|
|
972
|
|
973 if (u->request_sent) {
|
58
|
974 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
975 ngx_http_upstream_finalize_request(r, u,
|
|
976 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
977 return;
|
|
978 }
|
28
|
979 }
|
|
980
|
276
|
981 if (r->request_body
|
|
982 && r->request_body->buf
|
|
983 && r->request_body->temp_file
|
|
984 && r == r->main)
|
|
985 {
|
122
|
986 /*
|
|
987 * the r->request_body->buf can be reused for one request only,
|
|
988 * the subrequests should allocate their own temporay bufs
|
|
989 */
|
|
990
|
|
991 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
992 if (u->output.free == NULL) {
|
|
993 ngx_http_upstream_finalize_request(r, u,
|
|
994 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
995 return;
|
28
|
996 }
|
122
|
997
|
|
998 u->output.free->buf = r->request_body->buf;
|
|
999 u->output.free->next = NULL;
|
|
1000 u->output.allocated = 1;
|
|
1001
|
|
1002 r->request_body->buf->pos = r->request_body->buf->start;
|
|
1003 r->request_body->buf->last = r->request_body->buf->start;
|
|
1004 r->request_body->buf->tag = u->output.tag;
|
28
|
1005 }
|
|
1006
|
|
1007 u->request_sent = 0;
|
|
1008
|
|
1009 if (rc == NGX_AGAIN) {
|
|
1010 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
1011 return;
|
|
1012 }
|
|
1013
|
126
|
1014 #if (NGX_HTTP_SSL)
|
|
1015
|
348
|
1016 if (u->ssl && c->ssl == NULL) {
|
140
|
1017 ngx_http_upstream_ssl_init_connection(r, u, c);
|
126
|
1018 return;
|
|
1019 }
|
|
1020
|
|
1021 #endif
|
|
1022
|
28
|
1023 ngx_http_upstream_send_request(r, u);
|
|
1024 }
|
|
1025
|
|
1026
|
126
|
1027 #if (NGX_HTTP_SSL)
|
|
1028
|
|
1029 static void
|
140
|
1030 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
1031 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
1032 {
|
260
|
1033 ngx_int_t rc;
|
140
|
1034
|
|
1035 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
1036 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
493
|
1037 != NGX_OK)
|
140
|
1038 {
|
|
1039 ngx_http_upstream_finalize_request(r, u,
|
|
1040 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1041 return;
|
|
1042 }
|
|
1043
|
|
1044 c->sendfile = 0;
|
168
|
1045 u->output.sendfile = 0;
|
140
|
1046
|
418
|
1047 if (u->conf->ssl_session_reuse) {
|
|
1048 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
1049 ngx_http_upstream_finalize_request(r, u,
|
|
1050 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1051 return;
|
|
1052 }
|
140
|
1053 }
|
|
1054
|
190
|
1055 r->connection->log->action = "SSL handshaking to upstream";
|
|
1056
|
140
|
1057 rc = ngx_ssl_handshake(c);
|
|
1058
|
|
1059 if (rc == NGX_AGAIN) {
|
|
1060 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
1061 return;
|
|
1062 }
|
|
1063
|
|
1064 ngx_http_upstream_ssl_handshake(c);
|
|
1065 }
|
|
1066
|
|
1067
|
|
1068 static void
|
126
|
1069 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
1070 {
|
|
1071 ngx_http_request_t *r;
|
|
1072 ngx_http_upstream_t *u;
|
|
1073
|
|
1074 r = c->data;
|
|
1075 u = r->upstream;
|
|
1076
|
|
1077 if (c->ssl->handshaked) {
|
|
1078
|
418
|
1079 if (u->conf->ssl_session_reuse) {
|
|
1080 u->peer.save_session(&u->peer, u->peer.data);
|
|
1081 }
|
260
|
1082
|
455
|
1083 c->write->handler = ngx_http_upstream_handler;
|
|
1084 c->read->handler = ngx_http_upstream_handler;
|
126
|
1085
|
|
1086 ngx_http_upstream_send_request(r, u);
|
|
1087
|
|
1088 return;
|
|
1089 }
|
|
1090
|
|
1091 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1092
|
|
1093 }
|
|
1094
|
|
1095 #endif
|
|
1096
|
|
1097
|
58
|
1098 static ngx_int_t
|
36
|
1099 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1100 {
|
|
1101 ngx_chain_t *cl;
|
|
1102
|
58
|
1103 if (u->reinit_request(r) != NGX_OK) {
|
|
1104 return NGX_ERROR;
|
|
1105 }
|
|
1106
|
356
|
1107 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
1108
|
|
1109 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
140
|
1110 sizeof(ngx_table_elt_t))
|
|
1111 != NGX_OK)
|
58
|
1112 {
|
|
1113 return NGX_ERROR;
|
28
|
1114 }
|
|
1115
|
|
1116 /* reinit the request chain */
|
126
|
1117
|
58
|
1118 for (cl = u->request_bufs; cl; cl = cl->next) {
|
28
|
1119 cl->buf->pos = cl->buf->start;
|
|
1120 cl->buf->file_pos = 0;
|
|
1121 }
|
|
1122
|
58
|
1123 /* reinit the subrequest's ngx_output_chain() context */
|
|
1124
|
122
|
1125 if (r->request_body && r->request_body->temp_file
|
146
|
1126 && r != r->main && u->output.buf)
|
122
|
1127 {
|
|
1128 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
1129 if (u->output.free == NULL) {
|
|
1130 return NGX_ERROR;
|
58
|
1131 }
|
122
|
1132
|
|
1133 u->output.free->buf = u->output.buf;
|
|
1134 u->output.free->next = NULL;
|
|
1135
|
|
1136 u->output.buf->pos = u->output.buf->start;
|
|
1137 u->output.buf->last = u->output.buf->start;
|
58
|
1138 }
|
28
|
1139
|
|
1140 u->output.buf = NULL;
|
|
1141 u->output.in = NULL;
|
|
1142 u->output.busy = NULL;
|
126
|
1143
|
130
|
1144 /* reinit u->buffer */
|
126
|
1145
|
503
|
1146 u->buffer.pos = u->buffer.start;
|
|
1147
|
|
1148 #if (NGX_HTTP_CACHE)
|
|
1149
|
|
1150 if (r->cache) {
|
|
1151 u->buffer.pos += r->cache->header_start;
|
28
|
1152 }
|
58
|
1153
|
28
|
1154 #endif
|
|
1155
|
503
|
1156 u->buffer.last = u->buffer.pos;
|
|
1157
|
58
|
1158 return NGX_OK;
|
28
|
1159 }
|
|
1160
|
|
1161
|
36
|
1162 static void
|
|
1163 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1164 {
|
294
|
1165 ngx_int_t rc;
|
32
|
1166 ngx_connection_t *c;
|
126
|
1167
|
28
|
1168 c = u->peer.connection;
|
|
1169
|
|
1170 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1171 "http upstream send request");
|
|
1172
|
294
|
1173 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1174 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1175 return;
|
28
|
1176 }
|
|
1177
|
32
|
1178 c->log->action = "sending request to upstream";
|
28
|
1179
|
58
|
1180 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
28
|
1181
|
|
1182 u->request_sent = 1;
|
|
1183
|
|
1184 if (rc == NGX_ERROR) {
|
|
1185 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1186 return;
|
|
1187 }
|
|
1188
|
|
1189 if (c->write->timer_set) {
|
|
1190 ngx_del_timer(c->write);
|
|
1191 }
|
|
1192
|
|
1193 if (rc == NGX_AGAIN) {
|
|
1194 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
1195
|
459
|
1196 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
28
|
1197 ngx_http_upstream_finalize_request(r, u,
|
|
1198 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1199 return;
|
|
1200 }
|
|
1201
|
|
1202 return;
|
|
1203 }
|
|
1204
|
|
1205 /* rc == NGX_OK */
|
|
1206
|
|
1207 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
1208 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
1209 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
1210 ngx_tcp_push_n " failed");
|
|
1211 ngx_http_upstream_finalize_request(r, u,
|
|
1212 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
126
|
1213 return;
|
28
|
1214 }
|
|
1215
|
|
1216 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
1217 }
|
126
|
1218
|
28
|
1219 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
1220
|
|
1221 #if 1
|
|
1222 if (c->read->ready) {
|
126
|
1223
|
28
|
1224 /* post aio operation */
|
|
1225
|
|
1226 /*
|
|
1227 * TODO comment
|
|
1228 * although we can post aio operation just in the end
|
|
1229 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
1230 * it's better to do here because we postpone header buffer allocation
|
|
1231 */
|
|
1232
|
459
|
1233 ngx_http_upstream_process_header(r, u);
|
28
|
1234 return;
|
|
1235 }
|
|
1236 #endif
|
|
1237
|
455
|
1238 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
28
|
1239
|
459
|
1240 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
28
|
1241 ngx_http_upstream_finalize_request(r, u,
|
|
1242 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1243 return;
|
|
1244 }
|
|
1245 }
|
|
1246
|
|
1247
|
36
|
1248 static void
|
459
|
1249 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
1250 ngx_http_upstream_t *u)
|
28
|
1251 {
|
459
|
1252 ngx_connection_t *c;
|
|
1253
|
|
1254 c = u->peer.connection;
|
|
1255
|
|
1256 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
1257 "http upstream send request handler");
|
|
1258
|
459
|
1259 if (c->write->timedout) {
|
28
|
1260 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1261 return;
|
|
1262 }
|
|
1263
|
140
|
1264 #if (NGX_HTTP_SSL)
|
|
1265
|
348
|
1266 if (u->ssl && c->ssl == NULL) {
|
140
|
1267 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
1268 return;
|
|
1269 }
|
|
1270
|
|
1271 #endif
|
|
1272
|
200
|
1273 if (u->header_sent) {
|
455
|
1274 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
200
|
1275
|
459
|
1276 (void) ngx_handle_write_event(c->write, 0);
|
200
|
1277
|
|
1278 return;
|
|
1279 }
|
|
1280
|
28
|
1281 ngx_http_upstream_send_request(r, u);
|
|
1282 }
|
|
1283
|
|
1284
|
36
|
1285 static void
|
459
|
1286 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1287 {
|
503
|
1288 ssize_t n;
|
|
1289 ngx_int_t rc;
|
|
1290 ngx_connection_t *c;
|
28
|
1291
|
459
|
1292 c = u->peer.connection;
|
|
1293
|
|
1294 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
32
|
1295 "http upstream process header");
|
28
|
1296
|
32
|
1297 c->log->action = "reading response header from upstream";
|
28
|
1298
|
459
|
1299 if (c->read->timedout) {
|
28
|
1300 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1301 return;
|
|
1302 }
|
126
|
1303
|
294
|
1304 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1305 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1306 return;
|
|
1307 }
|
|
1308
|
130
|
1309 if (u->buffer.start == NULL) {
|
|
1310 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
1311 if (u->buffer.start == NULL) {
|
28
|
1312 ngx_http_upstream_finalize_request(r, u,
|
|
1313 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1314 return;
|
|
1315 }
|
|
1316
|
130
|
1317 u->buffer.pos = u->buffer.start;
|
|
1318 u->buffer.last = u->buffer.start;
|
|
1319 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
1320 u->buffer.temporary = 1;
|
|
1321
|
|
1322 u->buffer.tag = u->output.tag;
|
28
|
1323
|
356
|
1324 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
130
|
1325 sizeof(ngx_table_elt_t))
|
|
1326 != NGX_OK)
|
58
|
1327 {
|
|
1328 ngx_http_upstream_finalize_request(r, u,
|
|
1329 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1330 return;
|
|
1331 }
|
|
1332
|
503
|
1333 #if (NGX_HTTP_CACHE)
|
|
1334
|
|
1335 if (r->cache) {
|
|
1336 u->buffer.pos += r->cache->header_start;
|
130
|
1337 u->buffer.last = u->buffer.pos;
|
28
|
1338 }
|
|
1339 #endif
|
|
1340 }
|
|
1341
|
453
|
1342 for ( ;; ) {
|
|
1343
|
|
1344 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
1345
|
|
1346 if (n == NGX_AGAIN) {
|
28
|
1347 #if 0
|
453
|
1348 ngx_add_timer(rev, u->read_timeout);
|
28
|
1349 #endif
|
|
1350
|
459
|
1351 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
453
|
1352 ngx_http_upstream_finalize_request(r, u,
|
28
|
1353 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
453
|
1354 return;
|
|
1355 }
|
|
1356
|
|
1357 return;
|
|
1358 }
|
|
1359
|
|
1360 if (n == 0) {
|
459
|
1361 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
453
|
1362 "upstream prematurely closed connection");
|
|
1363 }
|
|
1364
|
|
1365 if (n == NGX_ERROR || n == 0) {
|
|
1366 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
28
|
1367 return;
|
|
1368 }
|
|
1369
|
453
|
1370 u->buffer.last += n;
|
28
|
1371
|
|
1372 #if 0
|
453
|
1373 u->valid_header_in = 0;
|
|
1374
|
|
1375 u->peer.cached = 0;
|
28
|
1376 #endif
|
|
1377
|
453
|
1378 rc = u->process_header(r);
|
|
1379
|
|
1380 if (rc == NGX_AGAIN) {
|
|
1381
|
|
1382 if (u->buffer.pos == u->buffer.end) {
|
459
|
1383 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
453
|
1384 "upstream sent too big header");
|
|
1385
|
|
1386 ngx_http_upstream_next(r, u,
|
|
1387 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1388 return;
|
|
1389 }
|
|
1390
|
|
1391 continue;
|
28
|
1392 }
|
|
1393
|
453
|
1394 break;
|
28
|
1395 }
|
|
1396
|
|
1397 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
1398 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1399 return;
|
|
1400 }
|
|
1401
|
356
|
1402 if (rc == NGX_ERROR) {
|
28
|
1403 ngx_http_upstream_finalize_request(r, u,
|
|
1404 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1405 return;
|
|
1406 }
|
|
1407
|
|
1408 /* rc == NGX_OK */
|
|
1409
|
440
|
1410 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
1411
|
|
1412 if (r->subrequest_in_memory) {
|
|
1413 u->buffer.last = u->buffer.pos;
|
58
|
1414 }
|
|
1415
|
440
|
1416 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
146
|
1417 return;
|
|
1418 }
|
|
1419
|
440
|
1420 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
146
|
1421 return;
|
|
1422 }
|
58
|
1423 }
|
|
1424
|
503
|
1425 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
64
|
1426 return;
|
|
1427 }
|
|
1428
|
248
|
1429 if (!r->subrequest_in_memory) {
|
|
1430 ngx_http_upstream_send_response(r, u);
|
|
1431 return;
|
|
1432 }
|
|
1433
|
|
1434 /* subrequest content in memory */
|
|
1435
|
|
1436 if (u->input_filter == NULL) {
|
|
1437 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1438 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1439 u->input_filter_ctx = r;
|
|
1440 }
|
|
1441
|
|
1442 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1443 ngx_http_upstream_finalize_request(r, u,
|
|
1444 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1445 return;
|
|
1446 }
|
|
1447
|
449
|
1448 n = u->buffer.last - u->buffer.pos;
|
|
1449
|
|
1450 if (n) {
|
|
1451 u->buffer.last -= n;
|
|
1452
|
459
|
1453 u->state->response_length += n;
|
|
1454
|
449
|
1455 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
248
|
1456 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1457 return;
|
|
1458 }
|
|
1459
|
449
|
1460 if (u->length == 0) {
|
|
1461 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1462 return;
|
|
1463 }
|
248
|
1464 }
|
|
1465
|
455
|
1466 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
248
|
1467
|
459
|
1468 ngx_http_upstream_process_body_in_memory(r, u);
|
248
|
1469 }
|
|
1470
|
|
1471
|
294
|
1472 static ngx_int_t
|
440
|
1473 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1474 {
|
|
1475 ngx_uint_t status;
|
|
1476 ngx_http_upstream_next_t *un;
|
|
1477
|
|
1478 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
1479 return NGX_DECLINED;
|
|
1480 }
|
|
1481
|
|
1482 status = u->headers_in.status_n;
|
|
1483
|
|
1484 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
1485
|
|
1486 if (status != un->status) {
|
|
1487 continue;
|
|
1488 }
|
|
1489
|
|
1490 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
1491 ngx_http_upstream_next(r, u, un->mask);
|
|
1492 return NGX_OK;
|
|
1493 }
|
|
1494
|
|
1495 #if (NGX_HTTP_CACHE)
|
|
1496
|
503
|
1497 if (u->peer.tries == 0
|
|
1498 && u->stale_cache
|
|
1499 && (u->conf->cache_use_stale & un->mask))
|
|
1500 {
|
440
|
1501 ngx_http_upstream_finalize_request(r, u,
|
503
|
1502 ngx_http_upstream_cache_send(r, u));
|
440
|
1503 return NGX_OK;
|
|
1504 }
|
|
1505
|
|
1506 #endif
|
|
1507 }
|
|
1508
|
|
1509 return NGX_DECLINED;
|
|
1510 }
|
|
1511
|
|
1512
|
|
1513 static ngx_int_t
|
|
1514 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
1515 ngx_http_upstream_t *u)
|
|
1516 {
|
|
1517 ngx_int_t status;
|
|
1518 ngx_uint_t i;
|
|
1519 ngx_table_elt_t *h;
|
|
1520 ngx_http_err_page_t *err_page;
|
|
1521 ngx_http_core_loc_conf_t *clcf;
|
|
1522
|
473
|
1523 status = u->headers_in.status_n;
|
|
1524
|
|
1525 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
1526 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
1527 return NGX_OK;
|
|
1528 }
|
|
1529
|
440
|
1530 if (!u->conf->intercept_errors) {
|
|
1531 return NGX_DECLINED;
|
|
1532 }
|
|
1533
|
|
1534 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1535
|
|
1536 if (clcf->error_pages == NULL) {
|
|
1537 return NGX_DECLINED;
|
|
1538 }
|
|
1539
|
|
1540 err_page = clcf->error_pages->elts;
|
|
1541 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
1542
|
|
1543 if (err_page[i].status == status) {
|
|
1544
|
|
1545 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
1546
|
|
1547 h = ngx_list_push(&r->headers_out.headers);
|
|
1548
|
|
1549 if (h == NULL) {
|
|
1550 ngx_http_upstream_finalize_request(r, u,
|
|
1551 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1552 return NGX_OK;
|
|
1553 }
|
|
1554
|
|
1555 *h = *u->headers_in.www_authenticate;
|
|
1556
|
|
1557 r->headers_out.www_authenticate = h;
|
|
1558 }
|
|
1559
|
|
1560 ngx_http_upstream_finalize_request(r, u, status);
|
|
1561
|
|
1562 return NGX_OK;
|
|
1563 }
|
|
1564 }
|
|
1565
|
|
1566 return NGX_DECLINED;
|
|
1567 }
|
|
1568
|
|
1569
|
|
1570 static ngx_int_t
|
294
|
1571 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
1572 {
|
|
1573 int err;
|
|
1574 socklen_t len;
|
|
1575
|
|
1576 #if (NGX_HAVE_KQUEUE)
|
|
1577
|
|
1578 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
296
|
1579 if (c->write->pending_eof) {
|
336
|
1580 c->log->action = "connecting to upstream";
|
296
|
1581 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
1582 "kevent() reported that connect() failed");
|
|
1583 return NGX_ERROR;
|
|
1584 }
|
294
|
1585
|
|
1586 } else
|
|
1587 #endif
|
|
1588 {
|
296
|
1589 err = 0;
|
|
1590 len = sizeof(int);
|
|
1591
|
|
1592 /*
|
|
1593 * BSDs and Linux return 0 and set a pending error in err
|
|
1594 * Solaris returns -1 and sets errno
|
|
1595 */
|
|
1596
|
|
1597 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
1598 == -1)
|
|
1599 {
|
|
1600 err = ngx_errno;
|
|
1601 }
|
|
1602
|
|
1603 if (err) {
|
336
|
1604 c->log->action = "connecting to upstream";
|
296
|
1605 (void) ngx_connection_error(c, err, "connect() failed");
|
|
1606 return NGX_ERROR;
|
|
1607 }
|
294
|
1608 }
|
|
1609
|
|
1610 return NGX_OK;
|
|
1611 }
|
|
1612
|
|
1613
|
503
|
1614 static ngx_int_t
|
|
1615 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1616 {
|
|
1617 ngx_str_t *uri, args;
|
|
1618 ngx_uint_t i, flags;
|
|
1619 ngx_list_part_t *part;
|
|
1620 ngx_table_elt_t *h;
|
|
1621 ngx_http_upstream_header_t *hh;
|
|
1622 ngx_http_upstream_main_conf_t *umcf;
|
|
1623
|
|
1624 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1625
|
|
1626 if (u->headers_in.x_accel_redirect) {
|
|
1627
|
|
1628 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1629
|
|
1630 part = &u->headers_in.headers.part;
|
|
1631 h = part->elts;
|
|
1632
|
|
1633 for (i = 0; /* void */; i++) {
|
|
1634
|
|
1635 if (i >= part->nelts) {
|
|
1636 if (part->next == NULL) {
|
|
1637 break;
|
|
1638 }
|
|
1639
|
|
1640 part = part->next;
|
|
1641 h = part->elts;
|
|
1642 i = 0;
|
|
1643 }
|
|
1644
|
|
1645 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1646 h[i].lowcase_key, h[i].key.len);
|
|
1647
|
|
1648 if (hh && hh->redirect) {
|
|
1649 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1650 ngx_http_finalize_request(r,
|
|
1651 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1652 return NGX_DONE;
|
|
1653 }
|
|
1654 }
|
|
1655 }
|
|
1656
|
|
1657 uri = &u->headers_in.x_accel_redirect->value;
|
|
1658 args.len = 0;
|
|
1659 args.data = NULL;
|
|
1660 flags = 0;
|
|
1661
|
|
1662 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
1663 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
1664 return NGX_DONE;
|
|
1665 }
|
|
1666
|
|
1667 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
1668 r->zero_in_uri = 1;
|
|
1669 }
|
|
1670
|
|
1671 if (r->method != NGX_HTTP_HEAD) {
|
|
1672 r->method = NGX_HTTP_GET;
|
|
1673 }
|
|
1674
|
|
1675 r->valid_unparsed_uri = 0;
|
|
1676
|
|
1677 ngx_http_internal_redirect(r, uri, &args);
|
|
1678 return NGX_DONE;
|
|
1679 }
|
|
1680
|
|
1681 part = &u->headers_in.headers.part;
|
|
1682 h = part->elts;
|
|
1683
|
|
1684 for (i = 0; /* void */; i++) {
|
|
1685
|
|
1686 if (i >= part->nelts) {
|
|
1687 if (part->next == NULL) {
|
|
1688 break;
|
|
1689 }
|
|
1690
|
|
1691 part = part->next;
|
|
1692 h = part->elts;
|
|
1693 i = 0;
|
|
1694 }
|
|
1695
|
|
1696 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
1697 h[i].lowcase_key, h[i].key.len))
|
|
1698 {
|
|
1699 continue;
|
|
1700 }
|
|
1701
|
|
1702 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1703 h[i].lowcase_key, h[i].key.len);
|
|
1704
|
|
1705 if (hh) {
|
|
1706 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1707 ngx_http_upstream_finalize_request(r, u,
|
|
1708 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1709 return NGX_DONE;
|
|
1710 }
|
|
1711
|
|
1712 continue;
|
|
1713 }
|
|
1714
|
|
1715 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1716 ngx_http_upstream_finalize_request(r, u,
|
|
1717 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1718 return NGX_DONE;
|
|
1719 }
|
|
1720 }
|
|
1721
|
|
1722 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
1723 r->headers_out.server->hash = 0;
|
|
1724 }
|
|
1725
|
|
1726 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
1727 r->headers_out.date->hash = 0;
|
|
1728 }
|
|
1729
|
|
1730 r->headers_out.status = u->headers_in.status_n;
|
|
1731 r->headers_out.status_line = u->headers_in.status_line;
|
|
1732
|
|
1733 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
1734
|
|
1735 if (r->headers_out.content_length_n != -1) {
|
|
1736 u->length = (size_t) r->headers_out.content_length_n;
|
|
1737
|
|
1738 } else {
|
|
1739 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1740 }
|
|
1741
|
|
1742 return NGX_OK;
|
|
1743 }
|
|
1744
|
|
1745
|
248
|
1746 static void
|
459
|
1747 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
1748 ngx_http_upstream_t *u)
|
248
|
1749 {
|
459
|
1750 size_t size;
|
|
1751 ssize_t n;
|
|
1752 ngx_buf_t *b;
|
|
1753 ngx_event_t *rev;
|
|
1754 ngx_connection_t *c;
|
|
1755
|
|
1756 c = u->peer.connection;
|
|
1757 rev = c->read;
|
248
|
1758
|
|
1759 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1760 "http upstream process body on memory");
|
|
1761
|
|
1762 if (rev->timedout) {
|
|
1763 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
1764 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
1765 return;
|
|
1766 }
|
|
1767
|
|
1768 b = &u->buffer;
|
|
1769
|
|
1770 for ( ;; ) {
|
|
1771
|
|
1772 size = b->end - b->last;
|
|
1773
|
|
1774 if (size == 0) {
|
|
1775 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
1776 "upstream buffer is too small to read repsonse");
|
|
1777 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1778 return;
|
|
1779 }
|
|
1780
|
|
1781 n = c->recv(c, b->last, size);
|
|
1782
|
|
1783 if (n == NGX_AGAIN) {
|
|
1784 break;
|
|
1785 }
|
|
1786
|
|
1787 if (n == 0 || n == NGX_ERROR) {
|
|
1788 ngx_http_upstream_finalize_request(r, u, n);
|
|
1789 return;
|
|
1790 }
|
|
1791
|
459
|
1792 u->state->response_length += n;
|
|
1793
|
248
|
1794 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1795 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1796 return;
|
|
1797 }
|
|
1798
|
|
1799 if (!rev->ready) {
|
|
1800 break;
|
|
1801 }
|
|
1802 }
|
|
1803
|
459
|
1804 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
248
|
1805 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1806 return;
|
|
1807 }
|
|
1808
|
|
1809 if (rev->active) {
|
|
1810 ngx_add_timer(rev, u->conf->read_timeout);
|
|
1811
|
|
1812 } else if (rev->timer_set) {
|
|
1813 ngx_del_timer(rev);
|
|
1814 }
|
230
|
1815 }
|
|
1816
|
|
1817
|
|
1818 static void
|
|
1819 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1820 {
|
|
1821 int tcp_nodelay;
|
459
|
1822 ssize_t n;
|
230
|
1823 ngx_int_t rc;
|
|
1824 ngx_event_pipe_t *p;
|
|
1825 ngx_connection_t *c;
|
|
1826 ngx_http_core_loc_conf_t *clcf;
|
|
1827
|
58
|
1828 rc = ngx_http_send_header(r);
|
28
|
1829
|
520
|
1830 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
34
|
1831 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
1832 return;
|
|
1833 }
|
|
1834
|
520
|
1835 c = r->connection;
|
|
1836
|
|
1837 if (r->header_only) {
|
|
1838
|
|
1839 if (u->cacheable || u->store) {
|
|
1840
|
|
1841 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
1842 ngx_connection_error(c, ngx_socket_errno,
|
|
1843 ngx_shutdown_socket_n " failed");
|
|
1844 }
|
|
1845
|
|
1846 r->read_event_handler = ngx_http_request_empty_handler;
|
|
1847 r->write_event_handler = ngx_http_request_empty_handler;
|
|
1848 c->error = 1;
|
|
1849
|
|
1850 } else {
|
|
1851 ngx_http_upstream_finalize_request(r, u, rc);
|
|
1852 return;
|
|
1853 }
|
|
1854 }
|
|
1855
|
28
|
1856 u->header_sent = 1;
|
|
1857
|
122
|
1858 if (r->request_body && r->request_body->temp_file) {
|
503
|
1859 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
1860 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
112
|
1861 }
|
|
1862
|
130
|
1863 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1864
|
198
|
1865 if (!u->buffering) {
|
130
|
1866
|
|
1867 if (u->input_filter == NULL) {
|
|
1868 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1869 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1870 u->input_filter_ctx = r;
|
|
1871 }
|
|
1872
|
457
|
1873 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
130
|
1874 r->write_event_handler =
|
|
1875 ngx_http_upstream_process_non_buffered_downstream;
|
|
1876
|
|
1877 r->limit_rate = 0;
|
|
1878
|
|
1879 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1880 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1881 return;
|
|
1882 }
|
|
1883
|
132
|
1884 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
1885 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
1886
|
|
1887 tcp_nodelay = 1;
|
|
1888
|
|
1889 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
1890 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
1891 {
|
|
1892 ngx_connection_error(c, ngx_socket_errno,
|
|
1893 "setsockopt(TCP_NODELAY) failed");
|
|
1894 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1895 return;
|
|
1896 }
|
|
1897
|
|
1898 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
1899 }
|
|
1900
|
459
|
1901 n = u->buffer.last - u->buffer.pos;
|
|
1902
|
|
1903 if (n) {
|
130
|
1904 u->buffer.last = u->buffer.pos;
|
|
1905
|
459
|
1906 u->state->response_length += n;
|
|
1907
|
|
1908 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
130
|
1909 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1910 return;
|
|
1911 }
|
|
1912
|
457
|
1913 ngx_http_upstream_process_non_buffered_downstream(r);
|
130
|
1914
|
|
1915 } else {
|
|
1916 u->buffer.pos = u->buffer.start;
|
|
1917 u->buffer.last = u->buffer.start;
|
|
1918
|
|
1919 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
1920 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1921 return;
|
|
1922 }
|
336
|
1923
|
|
1924 if (u->peer.connection->read->ready) {
|
459
|
1925 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
336
|
1926 }
|
130
|
1927 }
|
|
1928
|
|
1929 return;
|
|
1930 }
|
|
1931
|
28
|
1932 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
1933
|
503
|
1934 #if (NGX_HTTP_CACHE)
|
|
1935
|
|
1936 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
1937 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
1938 r->cache->file.fd = NGX_INVALID_FILE;
|
28
|
1939 }
|
|
1940
|
340
|
1941 if (u->cacheable) {
|
503
|
1942 time_t now, valid;
|
|
1943
|
512
|
1944 now = ngx_time();
|
|
1945
|
|
1946 valid = r->cache->valid_sec;
|
|
1947
|
|
1948 if (valid == 0) {
|
|
1949 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
1950 u->headers_in.status_n);
|
|
1951 if (valid) {
|
|
1952 r->cache->valid_sec = now + valid;
|
|
1953 }
|
|
1954 }
|
|
1955
|
503
|
1956 if (valid) {
|
|
1957 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
1958 r->cache->date = now;
|
|
1959 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
1960
|
|
1961 if (r->headers_out.content_length_n != -1) {
|
|
1962 r->cache->length = r->cache->body_start
|
|
1963 + r->headers_out.content_length_n;
|
|
1964 }
|
|
1965
|
|
1966 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
1967
|
|
1968 } else {
|
|
1969 u->cacheable = 0;
|
520
|
1970 r->headers_out.last_modified_time = -1;
|
503
|
1971 }
|
28
|
1972 }
|
|
1973
|
518
|
1974 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1975 "http cacheable: %d", u->cacheable);
|
|
1976
|
28
|
1977 #endif
|
|
1978
|
130
|
1979 p = u->pipe;
|
28
|
1980
|
|
1981 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
1982 p->output_ctx = r;
|
|
1983 p->tag = u->output.tag;
|
126
|
1984 p->bufs = u->conf->bufs;
|
28
|
1985 p->busy_size = u->conf->busy_buffers_size;
|
|
1986 p->upstream = u->peer.connection;
|
132
|
1987 p->downstream = c;
|
28
|
1988 p->pool = r->pool;
|
132
|
1989 p->log = c->log;
|
126
|
1990
|
340
|
1991 p->cacheable = u->cacheable || u->store;
|
28
|
1992
|
50
|
1993 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
1994 if (p->temp_file == NULL) {
|
28
|
1995 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1996 return;
|
|
1997 }
|
|
1998
|
|
1999 p->temp_file->file.fd = NGX_INVALID_FILE;
|
132
|
2000 p->temp_file->file.log = c->log;
|
28
|
2001 p->temp_file->path = u->conf->temp_path;
|
|
2002 p->temp_file->pool = r->pool;
|
126
|
2003
|
503
|
2004 if (p->cacheable) {
|
28
|
2005 p->temp_file->persistent = 1;
|
318
|
2006
|
28
|
2007 } else {
|
216
|
2008 p->temp_file->log_level = NGX_LOG_WARN;
|
28
|
2009 p->temp_file->warn = "an upstream response is buffered "
|
|
2010 "to a temporary file";
|
|
2011 }
|
|
2012
|
|
2013 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
2014 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
2015
|
50
|
2016 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
2017 if (p->preread_bufs == NULL) {
|
28
|
2018 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2019 return;
|
|
2020 }
|
318
|
2021
|
130
|
2022 p->preread_bufs->buf = &u->buffer;
|
28
|
2023 p->preread_bufs->next = NULL;
|
130
|
2024 u->buffer.recycled = 1;
|
|
2025
|
|
2026 p->preread_size = u->buffer.last - u->buffer.pos;
|
28
|
2027
|
340
|
2028 if (u->cacheable) {
|
318
|
2029
|
28
|
2030 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
2031 if (p->buf_to_file == NULL) {
|
|
2032 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2033 return;
|
|
2034 }
|
318
|
2035
|
130
|
2036 p->buf_to_file->pos = u->buffer.start;
|
|
2037 p->buf_to_file->last = u->buffer.pos;
|
28
|
2038 p->buf_to_file->temporary = 1;
|
|
2039 }
|
|
2040
|
|
2041 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
2042 /* the posted aio operation may currupt a shadow buffer */
|
|
2043 p->single_buf = 1;
|
|
2044 }
|
|
2045
|
|
2046 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
2047 p->free_bufs = 1;
|
|
2048
|
|
2049 /*
|
130
|
2050 * event_pipe would do u->buffer.last += p->preread_size
|
28
|
2051 * as though these bytes were read
|
|
2052 */
|
130
|
2053 u->buffer.last = u->buffer.pos;
|
28
|
2054
|
|
2055 if (u->conf->cyclic_temp_file) {
|
|
2056
|
|
2057 /*
|
|
2058 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
2059 * because the writing a new data may interfere with sendfile()
|
|
2060 * that uses the same kernel file pages (at least on FreeBSD)
|
|
2061 */
|
|
2062
|
|
2063 p->cyclic_temp_file = 1;
|
132
|
2064 c->sendfile = 0;
|
28
|
2065
|
|
2066 } else {
|
|
2067 p->cyclic_temp_file = 0;
|
|
2068 }
|
|
2069
|
|
2070 p->read_timeout = u->conf->read_timeout;
|
|
2071 p->send_timeout = clcf->send_timeout;
|
|
2072 p->send_lowat = clcf->send_lowat;
|
|
2073
|
457
|
2074 u->read_event_handler = ngx_http_upstream_process_upstream;
|
58
|
2075 r->write_event_handler = ngx_http_upstream_process_downstream;
|
28
|
2076
|
459
|
2077 ngx_http_upstream_process_upstream(r, u);
|
28
|
2078 }
|
|
2079
|
|
2080
|
36
|
2081 static void
|
130
|
2082 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
2083 {
|
457
|
2084 ngx_event_t *wev;
|
|
2085 ngx_connection_t *c;
|
|
2086 ngx_http_upstream_t *u;
|
|
2087
|
|
2088 c = r->connection;
|
|
2089 u = r->upstream;
|
|
2090 wev = c->write;
|
|
2091
|
|
2092 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2093 "http upstream process non buffered downstream");
|
|
2094
|
|
2095 c->log->action = "sending to client";
|
|
2096
|
|
2097 if (wev->timedout) {
|
|
2098 c->timedout = 1;
|
|
2099 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
2100 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2101 return;
|
|
2102 }
|
|
2103
|
|
2104 ngx_http_upstream_process_non_buffered_request(r, 1);
|
130
|
2105 }
|
|
2106
|
|
2107
|
|
2108 static void
|
459
|
2109 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
2110 ngx_http_upstream_t *u)
|
457
|
2111 {
|
459
|
2112 ngx_connection_t *c;
|
|
2113
|
|
2114 c = u->peer.connection;
|
457
|
2115
|
|
2116 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2117 "http upstream process non buffered upstream");
|
|
2118
|
|
2119 c->log->action = "reading upstream";
|
|
2120
|
459
|
2121 if (c->read->timedout) {
|
457
|
2122 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2123 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2124 return;
|
|
2125 }
|
|
2126
|
|
2127 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
2128 }
|
|
2129
|
|
2130
|
|
2131 static void
|
|
2132 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
2133 ngx_uint_t do_write)
|
130
|
2134 {
|
|
2135 size_t size;
|
|
2136 ssize_t n;
|
|
2137 ngx_buf_t *b;
|
132
|
2138 ngx_int_t rc;
|
457
|
2139 ngx_connection_t *downstream, *upstream;
|
130
|
2140 ngx_http_upstream_t *u;
|
|
2141 ngx_http_core_loc_conf_t *clcf;
|
|
2142
|
244
|
2143 u = r->upstream;
|
260
|
2144 downstream = r->connection;
|
|
2145 upstream = u->peer.connection;
|
130
|
2146
|
|
2147 b = &u->buffer;
|
|
2148
|
457
|
2149 do_write = do_write || u->length == 0;
|
130
|
2150
|
|
2151 for ( ;; ) {
|
|
2152
|
|
2153 if (do_write) {
|
|
2154
|
|
2155 if (u->out_bufs || u->busy_bufs) {
|
132
|
2156 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
2157
|
260
|
2158 if (downstream->destroyed) {
|
132
|
2159 return;
|
|
2160 }
|
|
2161
|
|
2162 if (rc == NGX_ERROR) {
|
130
|
2163 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2164 return;
|
|
2165 }
|
|
2166
|
|
2167 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
2168 &u->out_bufs, u->output.tag);
|
|
2169 }
|
|
2170
|
|
2171 if (u->busy_bufs == NULL) {
|
|
2172
|
|
2173 if (u->length == 0
|
260
|
2174 || upstream->read->eof
|
|
2175 || upstream->read->error)
|
130
|
2176 {
|
|
2177 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2178 return;
|
|
2179 }
|
|
2180
|
|
2181 b->pos = b->start;
|
|
2182 b->last = b->start;
|
|
2183 }
|
|
2184 }
|
|
2185
|
|
2186 size = b->end - b->last;
|
|
2187
|
|
2188 if (size > u->length) {
|
|
2189 size = u->length;
|
|
2190 }
|
|
2191
|
260
|
2192 if (size && upstream->read->ready) {
|
|
2193
|
|
2194 n = upstream->recv(upstream, b->last, size);
|
130
|
2195
|
|
2196 if (n == NGX_AGAIN) {
|
|
2197 break;
|
|
2198 }
|
|
2199
|
|
2200 if (n > 0) {
|
459
|
2201 u->state->response_length += n;
|
|
2202
|
130
|
2203 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
2204 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2205 return;
|
|
2206 }
|
|
2207 }
|
|
2208
|
|
2209 do_write = 1;
|
|
2210
|
|
2211 continue;
|
|
2212 }
|
|
2213
|
|
2214 break;
|
|
2215 }
|
|
2216
|
457
|
2217 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2218
|
260
|
2219 if (downstream->data == r) {
|
|
2220 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
455
|
2221 != NGX_OK)
|
132
|
2222 {
|
|
2223 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2224 return;
|
|
2225 }
|
130
|
2226 }
|
|
2227
|
276
|
2228 if (downstream->write->active && !downstream->write->ready) {
|
260
|
2229 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
2230
|
|
2231 } else if (downstream->write->timer_set) {
|
|
2232 ngx_del_timer(downstream->write);
|
130
|
2233 }
|
|
2234
|
455
|
2235 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
130
|
2236 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2237 return;
|
|
2238 }
|
|
2239
|
276
|
2240 if (upstream->read->active && !upstream->read->ready) {
|
260
|
2241 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
2242
|
|
2243 } else if (upstream->read->timer_set) {
|
|
2244 ngx_del_timer(upstream->read);
|
130
|
2245 }
|
|
2246 }
|
|
2247
|
|
2248
|
|
2249 static ngx_int_t
|
|
2250 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
2251 {
|
|
2252 return NGX_OK;
|
|
2253 }
|
|
2254
|
|
2255
|
|
2256 static ngx_int_t
|
|
2257 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
2258 {
|
|
2259 ngx_http_request_t *r = data;
|
|
2260
|
|
2261 ngx_buf_t *b;
|
|
2262 ngx_chain_t *cl, **ll;
|
|
2263 ngx_http_upstream_t *u;
|
|
2264
|
|
2265 u = r->upstream;
|
|
2266
|
|
2267 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
2268 ll = &cl->next;
|
|
2269 }
|
|
2270
|
|
2271 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
2272 if (cl == NULL) {
|
|
2273 return NGX_ERROR;
|
|
2274 }
|
|
2275
|
|
2276 *ll = cl;
|
|
2277
|
|
2278 cl->buf->flush = 1;
|
|
2279 cl->buf->memory = 1;
|
|
2280
|
|
2281 b = &u->buffer;
|
|
2282
|
|
2283 cl->buf->pos = b->last;
|
|
2284 b->last += bytes;
|
|
2285 cl->buf->last = b->last;
|
366
|
2286 cl->buf->tag = u->output.tag;
|
130
|
2287
|
|
2288 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
2289 return NGX_OK;
|
|
2290 }
|
|
2291
|
|
2292 u->length -= bytes;
|
|
2293
|
|
2294 return NGX_OK;
|
|
2295 }
|
|
2296
|
|
2297
|
|
2298 static void
|
58
|
2299 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
2300 {
|
457
|
2301 ngx_event_t *wev;
|
|
2302 ngx_connection_t *c;
|
58
|
2303 ngx_event_pipe_t *p;
|
28
|
2304 ngx_http_upstream_t *u;
|
|
2305
|
457
|
2306 c = r->connection;
|
28
|
2307 u = r->upstream;
|
130
|
2308 p = u->pipe;
|
457
|
2309 wev = c->write;
|
|
2310
|
|
2311 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2312 "http upstream process downstream");
|
|
2313
|
|
2314 c->log->action = "sending to client";
|
|
2315
|
|
2316 if (wev->timedout) {
|
|
2317
|
|
2318 if (wev->delayed) {
|
|
2319
|
|
2320 wev->timedout = 0;
|
|
2321 wev->delayed = 0;
|
|
2322
|
|
2323 if (!wev->ready) {
|
|
2324 ngx_add_timer(wev, p->send_timeout);
|
|
2325
|
|
2326 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
2327 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2328 }
|
|
2329
|
|
2330 return;
|
|
2331 }
|
|
2332
|
|
2333 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
2334
|
|
2335 if (c->destroyed) {
|
76
|
2336 return;
|
|
2337 }
|
|
2338
|
457
|
2339 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2340 return;
|
76
|
2341 }
|
28
|
2342
|
|
2343 } else {
|
457
|
2344 p->downstream_error = 1;
|
|
2345 c->timedout = 1;
|
|
2346 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
28
|
2347 }
|
|
2348
|
|
2349 } else {
|
457
|
2350
|
|
2351 if (wev->delayed) {
|
|
2352
|
76
|
2353 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2354 "http downstream delayed");
|
|
2355
|
457
|
2356 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
455
|
2357 ngx_http_upstream_finalize_request(r, u, 0);
|
76
|
2358 }
|
|
2359
|
|
2360 return;
|
|
2361 }
|
|
2362
|
457
|
2363 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
2364
|
|
2365 if (c->destroyed) {
|
132
|
2366 return;
|
|
2367 }
|
|
2368
|
28
|
2369 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2370 return;
|
|
2371 }
|
|
2372 }
|
126
|
2373
|
457
|
2374 ngx_http_upstream_process_request(r);
|
|
2375 }
|
|
2376
|
|
2377
|
|
2378 static void
|
459
|
2379 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
2380 ngx_http_upstream_t *u)
|
457
|
2381 {
|
459
|
2382 ngx_connection_t *c;
|
|
2383
|
|
2384 c = u->peer.connection;
|
457
|
2385
|
|
2386 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2387 "http upstream process upstream");
|
|
2388
|
|
2389 c->log->action = "reading upstream";
|
|
2390
|
459
|
2391 if (c->read->timedout) {
|
|
2392 u->pipe->upstream_error = 1;
|
457
|
2393 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2394
|
|
2395 } else {
|
|
2396 c = r->connection;
|
|
2397
|
459
|
2398 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
457
|
2399
|
|
2400 if (c->destroyed) {
|
|
2401 return;
|
|
2402 }
|
|
2403
|
|
2404 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2405 return;
|
|
2406 }
|
|
2407 }
|
|
2408
|
|
2409 ngx_http_upstream_process_request(r);
|
|
2410 }
|
|
2411
|
|
2412
|
|
2413 static void
|
|
2414 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
2415 {
|
473
|
2416 ngx_uint_t del;
|
457
|
2417 ngx_temp_file_t *tf;
|
|
2418 ngx_event_pipe_t *p;
|
|
2419 ngx_http_upstream_t *u;
|
|
2420
|
|
2421 u = r->upstream;
|
|
2422 p = u->pipe;
|
|
2423
|
28
|
2424 if (u->peer.connection) {
|
|
2425
|
318
|
2426 if (u->store) {
|
|
2427
|
473
|
2428 del = p->upstream_error;
|
|
2429
|
364
|
2430 tf = u->pipe->temp_file;
|
|
2431
|
476
|
2432 if (p->upstream_eof || p->upstream_done) {
|
473
|
2433
|
|
2434 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
2435 && (u->headers_in.content_length_n == -1
|
|
2436 || (u->headers_in.content_length_n == tf->offset)))
|
|
2437 {
|
|
2438 ngx_http_upstream_store(r, u);
|
|
2439
|
|
2440 } else {
|
|
2441 del = 1;
|
|
2442 }
|
|
2443 }
|
|
2444
|
|
2445 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
2446
|
364
|
2447 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
2448
|
318
|
2449 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
2450 ngx_delete_file_n " \"%s\" failed",
|
|
2451 u->pipe->temp_file->file.name.data);
|
|
2452 }
|
|
2453 }
|
|
2454 }
|
|
2455
|
503
|
2456 #if (NGX_HTTP_CACHE)
|
|
2457
|
|
2458 if (u->cacheable) {
|
|
2459
|
|
2460 if (p->upstream_done) {
|
|
2461 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2462
|
|
2463 } else if (p->upstream_eof) {
|
|
2464
|
|
2465 /* TODO: check length & update cache */
|
|
2466
|
|
2467 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2468
|
|
2469 } else if (p->upstream_error) {
|
|
2470 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
28
|
2471 }
|
|
2472 }
|
|
2473
|
|
2474 #endif
|
|
2475
|
|
2476 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
457
|
2477 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2478 "http upstream exit: %p", p->out);
|
28
|
2479 #if 0
|
|
2480 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2481 #endif
|
|
2482 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2483 return;
|
|
2484 }
|
|
2485 }
|
|
2486
|
|
2487 if (p->downstream_error) {
|
457
|
2488 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2489 "http upstream downstream error");
|
28
|
2490
|
522
|
2491 if (!u->cacheable && !u->store && u->peer.connection) {
|
28
|
2492 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2493 }
|
|
2494 }
|
|
2495 }
|
|
2496
|
|
2497
|
36
|
2498 static void
|
318
|
2499 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
2500 {
|
370
|
2501 size_t root;
|
|
2502 time_t lm;
|
|
2503 ngx_str_t path;
|
|
2504 ngx_temp_file_t *tf;
|
|
2505 ngx_ext_rename_file_t ext;
|
318
|
2506
|
358
|
2507 tf = u->pipe->temp_file;
|
|
2508
|
|
2509 if (tf->file.fd == NGX_INVALID_FILE) {
|
318
|
2510
|
|
2511 /* create file for empty 200 response */
|
|
2512
|
|
2513 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2514 if (tf == NULL) {
|
|
2515 return;
|
|
2516 }
|
|
2517
|
|
2518 tf->file.fd = NGX_INVALID_FILE;
|
|
2519 tf->file.log = r->connection->log;
|
|
2520 tf->path = u->conf->temp_path;
|
|
2521 tf->pool = r->pool;
|
|
2522 tf->persistent = 1;
|
|
2523
|
|
2524 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
2525 tf->persistent, tf->clean, tf->access)
|
|
2526 != NGX_OK)
|
|
2527 {
|
|
2528 return;
|
|
2529 }
|
|
2530
|
|
2531 u->pipe->temp_file = tf;
|
|
2532 }
|
|
2533
|
370
|
2534 ext.access = u->conf->store_access;
|
459
|
2535 ext.path_access = u->conf->store_access;
|
370
|
2536 ext.time = -1;
|
|
2537 ext.create_path = 1;
|
|
2538 ext.delete_file = 1;
|
459
|
2539 ext.log_rename_error = 1;
|
370
|
2540 ext.log = r->connection->log;
|
318
|
2541
|
356
|
2542 if (u->headers_in.last_modified) {
|
|
2543
|
370
|
2544 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
2545 u->headers_in.last_modified->value.len);
|
318
|
2546
|
|
2547 if (lm != NGX_ERROR) {
|
370
|
2548 ext.time = lm;
|
|
2549 ext.fd = tf->file.fd;
|
318
|
2550 }
|
|
2551 }
|
|
2552
|
320
|
2553 if (u->conf->store_lengths == NULL) {
|
|
2554
|
|
2555 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
2556
|
|
2557 } else {
|
|
2558 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
2559 u->conf->store_values->elts)
|
|
2560 == NULL)
|
|
2561 {
|
|
2562 return;
|
|
2563 }
|
|
2564 }
|
318
|
2565
|
|
2566 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
370
|
2567 "upstream stores \"%s\" to \"%s\"",
|
|
2568 tf->file.name.data, path.data);
|
|
2569
|
|
2570 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
318
|
2571 }
|
|
2572
|
|
2573
|
|
2574 static void
|
459
|
2575 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
2576 {
|
459
|
2577 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
2578 "http upstream dummy handler");
|
|
2579 }
|
|
2580
|
|
2581
|
36
|
2582 static void
|
|
2583 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
2584 ngx_uint_t ft_type)
|
28
|
2585 {
|
260
|
2586 ngx_uint_t status, state;
|
28
|
2587
|
|
2588 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
260
|
2589 "http next upstream, %xi", ft_type);
|
28
|
2590
|
|
2591 #if 0
|
|
2592 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2593 #endif
|
|
2594
|
74
|
2595 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
260
|
2596 state = NGX_PEER_NEXT;
|
74
|
2597 } else {
|
260
|
2598 state = NGX_PEER_FAILED;
|
28
|
2599 }
|
74
|
2600
|
326
|
2601 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
2602 u->peer.free(&u->peer, u->peer.data, state);
|
|
2603 }
|
74
|
2604
|
28
|
2605 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
2606 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
2607 "upstream timed out");
|
|
2608 }
|
126
|
2609
|
28
|
2610 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
2611 status = 0;
|
|
2612
|
|
2613 } else {
|
|
2614 switch(ft_type) {
|
|
2615
|
|
2616 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
2617 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
2618 break;
|
|
2619
|
|
2620 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
2621 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
2622 break;
|
|
2623
|
|
2624 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
2625 status = NGX_HTTP_NOT_FOUND;
|
|
2626 break;
|
|
2627
|
|
2628 /*
|
|
2629 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
2630 * never reach here
|
|
2631 */
|
|
2632
|
|
2633 default:
|
|
2634 status = NGX_HTTP_BAD_GATEWAY;
|
|
2635 }
|
|
2636 }
|
|
2637
|
132
|
2638 if (r->connection->error) {
|
28
|
2639 ngx_http_upstream_finalize_request(r, u,
|
|
2640 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
2641 return;
|
|
2642 }
|
|
2643
|
|
2644 if (status) {
|
|
2645 u->state->status = status;
|
|
2646
|
74
|
2647 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
28
|
2648
|
|
2649 #if (NGX_HTTP_CACHE)
|
|
2650
|
503
|
2651 if (u->stale_cache && (u->conf->cache_use_stale & ft_type)) {
|
|
2652
|
28
|
2653 ngx_http_upstream_finalize_request(r, u,
|
503
|
2654 ngx_http_upstream_cache_send(r, u));
|
28
|
2655 return;
|
|
2656 }
|
|
2657 #endif
|
|
2658
|
|
2659 ngx_http_upstream_finalize_request(r, u, status);
|
|
2660 return;
|
|
2661 }
|
|
2662 }
|
|
2663
|
|
2664 if (u->peer.connection) {
|
|
2665 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2666 "close http upstream connection: %d",
|
|
2667 u->peer.connection->fd);
|
126
|
2668 #if (NGX_HTTP_SSL)
|
260
|
2669
|
126
|
2670 if (u->peer.connection->ssl) {
|
260
|
2671 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2672 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
2673
|
|
2674 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2675 }
|
|
2676 #endif
|
260
|
2677
|
28
|
2678 ngx_close_connection(u->peer.connection);
|
|
2679 }
|
|
2680
|
|
2681 #if 0
|
|
2682 if (u->conf->busy_lock && !u->busy_locked) {
|
|
2683 ngx_http_upstream_busy_lock(p);
|
|
2684 return;
|
|
2685 }
|
|
2686 #endif
|
|
2687
|
|
2688 ngx_http_upstream_connect(r, u);
|
|
2689 }
|
|
2690
|
|
2691
|
36
|
2692 static void
|
118
|
2693 ngx_http_upstream_cleanup(void *data)
|
|
2694 {
|
|
2695 ngx_http_request_t *r = data;
|
|
2696
|
356
|
2697 ngx_http_upstream_t *u;
|
|
2698
|
118
|
2699 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2700 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
2701
|
356
|
2702 u = r->upstream;
|
|
2703
|
|
2704 if (u->resolved && u->resolved->ctx) {
|
|
2705 ngx_resolve_name_done(u->resolved->ctx);
|
348
|
2706 }
|
|
2707
|
356
|
2708 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
118
|
2709 }
|
|
2710
|
|
2711
|
|
2712 static void
|
36
|
2713 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
2714 ngx_http_upstream_t *u, ngx_int_t rc)
|
28
|
2715 {
|
262
|
2716 ngx_time_t *tp;
|
112
|
2717
|
32
|
2718 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2719 "finalize http upstream request: %i", rc);
|
28
|
2720
|
461
|
2721 if (u->cleanup) {
|
|
2722 *u->cleanup = NULL;
|
|
2723 }
|
118
|
2724
|
348
|
2725 if (u->state && u->state->response_sec) {
|
112
|
2726 tp = ngx_timeofday();
|
262
|
2727 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
2728 u->state->response_msec = tp->msec - u->state->response_msec;
|
459
|
2729
|
|
2730 if (u->pipe) {
|
|
2731 u->state->response_length = u->pipe->read_length;
|
|
2732 }
|
112
|
2733 }
|
|
2734
|
28
|
2735 u->finalize_request(r, rc);
|
|
2736
|
348
|
2737 if (u->peer.free) {
|
|
2738 u->peer.free(&u->peer, u->peer.data, 0);
|
|
2739 }
|
260
|
2740
|
28
|
2741 if (u->peer.connection) {
|
260
|
2742
|
126
|
2743 #if (NGX_HTTP_SSL)
|
|
2744
|
|
2745 /* TODO: do not shutdown persistent connection */
|
|
2746
|
|
2747 if (u->peer.connection->ssl) {
|
260
|
2748
|
|
2749 /*
|
|
2750 * We send the "close notify" shutdown alert to the upstream only
|
|
2751 * and do not wait its "close notify" shutdown alert.
|
|
2752 * It is acceptable according to the TLS standard.
|
|
2753 */
|
|
2754
|
|
2755 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2756
|
|
2757 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2758 }
|
|
2759 #endif
|
260
|
2760
|
|
2761 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2762 "close http upstream connection: %d",
|
|
2763 u->peer.connection->fd);
|
|
2764
|
28
|
2765 ngx_close_connection(u->peer.connection);
|
|
2766 }
|
|
2767
|
32
|
2768 u->peer.connection = NULL;
|
|
2769
|
130
|
2770 if (u->pipe && u->pipe->temp_file) {
|
28
|
2771 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2772 "http upstream temp fd: %d",
|
130
|
2773 u->pipe->temp_file->file.fd);
|
28
|
2774 }
|
|
2775
|
503
|
2776 #if (NGX_HTTP_CACHE)
|
|
2777
|
518
|
2778 if (u->cacheable) {
|
503
|
2779 time_t valid;
|
|
2780
|
28
|
2781 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2782 "http upstream cache fd: %d",
|
503
|
2783 r->cache->file.fd);
|
|
2784
|
|
2785 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
2786
|
|
2787 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
2788
|
|
2789 if (valid) {
|
|
2790 r->cache->valid_sec = ngx_time() + valid;
|
|
2791 r->cache->error = rc;
|
|
2792 }
|
|
2793 }
|
|
2794
|
|
2795 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
28
|
2796 }
|
503
|
2797
|
28
|
2798 #endif
|
|
2799
|
518
|
2800 if (u->header_sent
|
|
2801 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
503
|
2802 {
|
|
2803 rc = 0;
|
|
2804 }
|
|
2805
|
64
|
2806 if (rc == NGX_DECLINED) {
|
|
2807 return;
|
|
2808 }
|
|
2809
|
32
|
2810 r->connection->log->action = "sending to client";
|
|
2811
|
455
|
2812 if (rc == 0 && r == r->main && !r->post_action) {
|
|
2813 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
28
|
2814 }
|
|
2815
|
|
2816 ngx_http_finalize_request(r, rc);
|
|
2817 }
|
|
2818
|
|
2819
|
58
|
2820 static ngx_int_t
|
|
2821 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2822 ngx_uint_t offset)
|
126
|
2823 {
|
58
|
2824 ngx_table_elt_t **ph;
|
126
|
2825
|
58
|
2826 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
2827
|
|
2828 if (*ph == NULL) {
|
|
2829 *ph = h;
|
|
2830 }
|
|
2831
|
|
2832 return NGX_OK;
|
|
2833 }
|
|
2834
|
|
2835
|
|
2836 static ngx_int_t
|
512
|
2837 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2838 ngx_uint_t offset)
|
|
2839 {
|
|
2840 return NGX_OK;
|
|
2841 }
|
|
2842
|
|
2843
|
|
2844 static ngx_int_t
|
|
2845 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
58
|
2846 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2847 {
|
|
2848 ngx_array_t *pa;
|
|
2849 ngx_table_elt_t **ph;
|
|
2850
|
512
|
2851 pa = &r->upstream->headers_in.cache_control;
|
58
|
2852
|
|
2853 if (pa->elts == NULL) {
|
|
2854 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2855 {
|
|
2856 return NGX_ERROR;
|
|
2857 }
|
|
2858 }
|
|
2859
|
|
2860 ph = ngx_array_push(pa);
|
|
2861 if (ph == NULL) {
|
|
2862 return NGX_ERROR;
|
|
2863 }
|
|
2864
|
|
2865 *ph = h;
|
|
2866
|
520
|
2867 #if (NGX_HTTP_CACHE)
|
|
2868 {
|
|
2869 u_char *p, *last;
|
|
2870 ngx_int_t n;
|
|
2871
|
512
|
2872 if (r->cache == NULL) {
|
|
2873 return NGX_OK;
|
|
2874 }
|
|
2875
|
|
2876 if (r->cache->valid_sec != 0) {
|
|
2877 return NGX_OK;
|
|
2878 }
|
|
2879
|
|
2880 last = h->value.data + h->value.len;
|
|
2881
|
|
2882 if (ngx_strlcasestrn(h->value.data, last, (u_char *) "no-cache", 8 - 1)
|
|
2883 != NULL)
|
|
2884 {
|
|
2885 r->upstream->cacheable = 0;
|
|
2886 return NGX_OK;
|
|
2887 }
|
|
2888
|
|
2889 p = ngx_strlcasestrn(h->value.data, last, (u_char *) "max-age=", 8 - 1);
|
|
2890
|
|
2891 if (p == NULL) {
|
|
2892 return NGX_OK;
|
|
2893 }
|
|
2894
|
|
2895 n = 0;
|
|
2896
|
|
2897 for (p += 8; p < last; p++) {
|
|
2898 if (*p == ';' || *p == ' ') {
|
|
2899 break;
|
|
2900 }
|
|
2901
|
|
2902 if (*p >= '0' && *p <= '9') {
|
|
2903 n = n * 10 + *p - '0';
|
|
2904 continue;
|
|
2905 }
|
|
2906
|
|
2907 r->upstream->cacheable = 0;
|
|
2908 return NGX_OK;
|
|
2909 }
|
|
2910
|
|
2911 if (n == 0) {
|
|
2912 r->upstream->cacheable = 0;
|
|
2913 return NGX_OK;
|
|
2914 }
|
|
2915
|
|
2916 r->cache->valid_sec = ngx_time() + n;
|
520
|
2917 }
|
|
2918 #endif
|
|
2919
|
58
|
2920 return NGX_OK;
|
|
2921 }
|
|
2922
|
|
2923
|
|
2924 static ngx_int_t
|
512
|
2925 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
58
|
2926 ngx_uint_t offset)
|
|
2927 {
|
520
|
2928 r->upstream->headers_in.expires = h;
|
|
2929
|
|
2930 #if (NGX_HTTP_CACHE)
|
|
2931 {
|
512
|
2932 time_t expires;
|
|
2933
|
|
2934 if (r->cache == NULL) {
|
|
2935 return NGX_OK;
|
|
2936 }
|
|
2937
|
|
2938 if (r->cache->valid_sec != 0) {
|
|
2939 return NGX_OK;
|
|
2940 }
|
|
2941
|
|
2942 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
2943
|
|
2944 if (expires == NGX_ERROR || expires < ngx_time()) {
|
|
2945 r->upstream->cacheable = 0;
|
|
2946 return NGX_OK;
|
|
2947 }
|
|
2948
|
|
2949 r->cache->valid_sec = expires;
|
520
|
2950 }
|
|
2951 #endif
|
512
|
2952
|
|
2953 return NGX_OK;
|
|
2954 }
|
|
2955
|
|
2956
|
|
2957 static ngx_int_t
|
|
2958 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
2959 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2960 {
|
520
|
2961 r->upstream->headers_in.x_accel_expires = h;
|
|
2962
|
|
2963 #if (NGX_HTTP_CACHE)
|
|
2964 {
|
512
|
2965 u_char *p;
|
|
2966 size_t len;
|
|
2967 ngx_int_t n;
|
|
2968
|
|
2969 if (r->cache == NULL) {
|
|
2970 return NGX_OK;
|
|
2971 }
|
|
2972
|
|
2973 len = h->value.len;
|
|
2974 p = h->value.data;
|
|
2975
|
|
2976 if (p[0] != '@') {
|
|
2977 n = ngx_atoi(p, len);
|
|
2978
|
|
2979 switch (n) {
|
|
2980 case 0:
|
|
2981 r->upstream->cacheable = 0;
|
|
2982 case NGX_ERROR:
|
|
2983 return NGX_OK;
|
|
2984
|
|
2985 default:
|
|
2986 r->cache->valid_sec = ngx_time() + n;
|
|
2987 return NGX_OK;
|
|
2988 }
|
|
2989 }
|
|
2990
|
|
2991 p++;
|
|
2992 len--;
|
|
2993
|
|
2994 n = ngx_atoi(p, len);
|
|
2995
|
|
2996 if (n != NGX_ERROR) {
|
|
2997 r->cache->valid_sec = n;
|
|
2998 }
|
520
|
2999 }
|
|
3000 #endif
|
512
|
3001
|
58
|
3002 return NGX_OK;
|
|
3003 }
|
|
3004
|
|
3005
|
|
3006 static ngx_int_t
|
76
|
3007 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3008 ngx_uint_t offset)
|
126
|
3009 {
|
76
|
3010 ngx_int_t n;
|
|
3011
|
|
3012 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
3013
|
|
3014 n = ngx_atoi(h->value.data, h->value.len);
|
|
3015
|
|
3016 if (n != NGX_ERROR) {
|
|
3017 r->limit_rate = (size_t) n;
|
|
3018 }
|
|
3019
|
|
3020 return NGX_OK;
|
|
3021 }
|
|
3022
|
|
3023
|
|
3024 static ngx_int_t
|
198
|
3025 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3026 ngx_uint_t offset)
|
|
3027 {
|
|
3028 u_char c0, c1, c2;
|
|
3029
|
|
3030 if (r->upstream->conf->change_buffering) {
|
|
3031
|
|
3032 if (h->value.len == 2) {
|
|
3033 c0 = ngx_tolower(h->value.data[0]);
|
|
3034 c1 = ngx_tolower(h->value.data[1]);
|
|
3035
|
|
3036 if (c0 == 'n' && c1 == 'o') {
|
|
3037 r->upstream->buffering = 0;
|
|
3038 }
|
|
3039
|
|
3040 } else if (h->value.len == 3) {
|
|
3041 c0 = ngx_tolower(h->value.data[0]);
|
|
3042 c1 = ngx_tolower(h->value.data[1]);
|
|
3043 c2 = ngx_tolower(h->value.data[2]);
|
|
3044
|
|
3045 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
3046 r->upstream->buffering = 1;
|
|
3047 }
|
|
3048 }
|
|
3049 }
|
|
3050
|
|
3051 return NGX_OK;
|
|
3052 }
|
|
3053
|
|
3054
|
|
3055 static ngx_int_t
|
206
|
3056 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3057 ngx_uint_t offset)
|
|
3058 {
|
|
3059 r->headers_out.override_charset = &h->value;
|
|
3060
|
|
3061 return NGX_OK;
|
|
3062 }
|
|
3063
|
|
3064
|
|
3065 static ngx_int_t
|
58
|
3066 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3067 ngx_uint_t offset)
|
|
3068 {
|
122
|
3069 ngx_table_elt_t *ho, **ph;
|
58
|
3070
|
|
3071 ho = ngx_list_push(&r->headers_out.headers);
|
|
3072 if (ho == NULL) {
|
|
3073 return NGX_ERROR;
|
|
3074 }
|
|
3075
|
|
3076 *ho = *h;
|
|
3077
|
122
|
3078 if (offset) {
|
|
3079 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
3080 *ph = ho;
|
|
3081 }
|
|
3082
|
58
|
3083 return NGX_OK;
|
|
3084 }
|
|
3085
|
|
3086
|
|
3087 static ngx_int_t
|
|
3088 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
3089 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3090 {
|
|
3091 ngx_array_t *pa;
|
|
3092 ngx_table_elt_t *ho, **ph;
|
|
3093
|
|
3094 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
3095
|
|
3096 if (pa->elts == NULL) {
|
|
3097 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
3098 {
|
|
3099 return NGX_ERROR;
|
|
3100 }
|
|
3101 }
|
|
3102
|
|
3103 ph = ngx_array_push(pa);
|
|
3104 if (ph == NULL) {
|
|
3105 return NGX_ERROR;
|
|
3106 }
|
|
3107
|
|
3108 ho = ngx_list_push(&r->headers_out.headers);
|
|
3109 if (ho == NULL) {
|
|
3110 return NGX_ERROR;
|
|
3111 }
|
|
3112
|
|
3113 *ho = *h;
|
|
3114 *ph = ho;
|
|
3115
|
|
3116 return NGX_OK;
|
|
3117 }
|
|
3118
|
|
3119
|
|
3120 static ngx_int_t
|
|
3121 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3122 ngx_uint_t offset)
|
|
3123 {
|
206
|
3124 u_char *p, *last;
|
|
3125
|
|
3126 r->headers_out.content_type_len = h->value.len;
|
58
|
3127 r->headers_out.content_type = h->value;
|
|
3128
|
206
|
3129 for (p = h->value.data; *p; p++) {
|
|
3130
|
|
3131 if (*p != ';') {
|
|
3132 continue;
|
|
3133 }
|
|
3134
|
|
3135 last = p;
|
|
3136
|
|
3137 while (*++p == ' ') { /* void */ }
|
|
3138
|
372
|
3139 if (*p == '\0') {
|
|
3140 return NGX_OK;
|
|
3141 }
|
|
3142
|
286
|
3143 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
206
|
3144 continue;
|
|
3145 }
|
|
3146
|
|
3147 p += 8;
|
|
3148
|
|
3149 r->headers_out.content_type_len = last - h->value.data;
|
|
3150
|
437
|
3151 if (*p == '"') {
|
|
3152 p++;
|
|
3153 }
|
|
3154
|
|
3155 last = h->value.data + h->value.len;
|
|
3156
|
|
3157 if (*(last - 1) == '"') {
|
|
3158 last--;
|
|
3159 }
|
|
3160
|
|
3161 r->headers_out.charset.len = last - p;
|
206
|
3162 r->headers_out.charset.data = p;
|
292
|
3163
|
|
3164 return NGX_OK;
|
206
|
3165 }
|
|
3166
|
58
|
3167 return NGX_OK;
|
|
3168 }
|
|
3169
|
|
3170
|
|
3171 static ngx_int_t
|
|
3172 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3173 ngx_uint_t offset)
|
|
3174 {
|
|
3175 ngx_table_elt_t *ho;
|
|
3176
|
|
3177 ho = ngx_list_push(&r->headers_out.headers);
|
|
3178 if (ho == NULL) {
|
|
3179 return NGX_ERROR;
|
|
3180 }
|
|
3181
|
|
3182 *ho = *h;
|
|
3183
|
|
3184 r->headers_out.content_length = ho;
|
|
3185 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
3186
|
|
3187 return NGX_OK;
|
|
3188 }
|
|
3189
|
|
3190
|
|
3191 static ngx_int_t
|
503
|
3192 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3193 ngx_uint_t offset)
|
|
3194 {
|
|
3195 ngx_table_elt_t *ho;
|
|
3196
|
|
3197 ho = ngx_list_push(&r->headers_out.headers);
|
|
3198 if (ho == NULL) {
|
|
3199 return NGX_ERROR;
|
|
3200 }
|
|
3201
|
|
3202 *ho = *h;
|
|
3203
|
|
3204 #if (NGX_HTTP_CACHE)
|
|
3205
|
520
|
3206 if (r->cached || r->upstream->cacheable) {
|
503
|
3207 r->headers_out.last_modified = ho;
|
|
3208 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
3209 h->value.len);
|
|
3210 }
|
|
3211
|
|
3212 #endif
|
|
3213
|
|
3214 return NGX_OK;
|
|
3215 }
|
|
3216
|
|
3217
|
|
3218 static ngx_int_t
|
58
|
3219 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3220 ngx_uint_t offset)
|
|
3221 {
|
|
3222 ngx_int_t rc;
|
|
3223 ngx_table_elt_t *ho;
|
|
3224
|
|
3225 ho = ngx_list_push(&r->headers_out.headers);
|
|
3226 if (ho == NULL) {
|
|
3227 return NGX_ERROR;
|
|
3228 }
|
|
3229
|
|
3230 *ho = *h;
|
|
3231
|
|
3232 if (r->upstream->rewrite_redirect) {
|
|
3233 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
3234
|
78
|
3235 if (rc == NGX_DECLINED) {
|
|
3236 return NGX_OK;
|
|
3237 }
|
|
3238
|
58
|
3239 if (rc == NGX_OK) {
|
|
3240 r->headers_out.location = ho;
|
|
3241
|
|
3242 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3243 "rewritten location: \"%V\"", &ho->value);
|
|
3244 }
|
|
3245
|
|
3246 return rc;
|
|
3247 }
|
|
3248
|
348
|
3249 if (ho->value.data[0] != '/') {
|
|
3250 r->headers_out.location = ho;
|
|
3251 }
|
|
3252
|
58
|
3253 /*
|
|
3254 * we do not set r->headers_out.location here to avoid the handling
|
|
3255 * the local redirects without a host name by ngx_http_header_filter()
|
|
3256 */
|
|
3257
|
|
3258 return NGX_OK;
|
|
3259 }
|
|
3260
|
|
3261
|
|
3262 static ngx_int_t
|
|
3263 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3264 ngx_uint_t offset)
|
|
3265 {
|
|
3266 u_char *p;
|
|
3267 ngx_int_t rc;
|
|
3268 ngx_table_elt_t *ho;
|
|
3269
|
|
3270 ho = ngx_list_push(&r->headers_out.headers);
|
|
3271 if (ho == NULL) {
|
|
3272 return NGX_ERROR;
|
|
3273 }
|
|
3274
|
|
3275 *ho = *h;
|
|
3276
|
|
3277 if (r->upstream->rewrite_redirect) {
|
|
3278
|
340
|
3279 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
58
|
3280
|
|
3281 if (p) {
|
|
3282 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
3283
|
|
3284 } else {
|
|
3285 return NGX_OK;
|
|
3286 }
|
|
3287
|
78
|
3288 if (rc == NGX_DECLINED) {
|
|
3289 return NGX_OK;
|
|
3290 }
|
|
3291
|
58
|
3292 if (rc == NGX_OK) {
|
348
|
3293 r->headers_out.refresh = ho;
|
|
3294
|
58
|
3295 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3296 "rewritten refresh: \"%V\"", &ho->value);
|
|
3297 }
|
|
3298
|
|
3299 return rc;
|
|
3300 }
|
|
3301
|
348
|
3302 r->headers_out.refresh = ho;
|
|
3303
|
58
|
3304 return NGX_OK;
|
|
3305 }
|
|
3306
|
|
3307
|
503
|
3308 static ngx_int_t
|
|
3309 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
3310 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3311 {
|
|
3312 ngx_table_elt_t *ho;
|
|
3313
|
|
3314 #if (NGX_HTTP_CACHE)
|
|
3315
|
|
3316 if (r->cached) {
|
|
3317 r->allow_ranges = 1;
|
|
3318 return NGX_OK;
|
|
3319
|
|
3320 }
|
|
3321
|
|
3322 #endif
|
|
3323
|
|
3324 ho = ngx_list_push(&r->headers_out.headers);
|
|
3325 if (ho == NULL) {
|
|
3326 return NGX_ERROR;
|
|
3327 }
|
|
3328
|
|
3329 *ho = *h;
|
|
3330
|
|
3331 return NGX_OK;
|
|
3332 }
|
|
3333
|
|
3334
|
58
|
3335 #if (NGX_HTTP_GZIP)
|
|
3336
|
|
3337 static ngx_int_t
|
|
3338 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
3339 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3340 {
|
|
3341 ngx_table_elt_t *ho;
|
|
3342
|
|
3343 ho = ngx_list_push(&r->headers_out.headers);
|
|
3344 if (ho == NULL) {
|
|
3345 return NGX_ERROR;
|
|
3346 }
|
|
3347
|
|
3348 *ho = *h;
|
|
3349
|
|
3350 r->headers_out.content_encoding = ho;
|
|
3351
|
|
3352 return NGX_OK;
|
|
3353 }
|
|
3354
|
|
3355 #endif
|
|
3356
|
|
3357
|
36
|
3358 static ngx_int_t
|
122
|
3359 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
28
|
3360 {
|
260
|
3361 ngx_http_variable_t *var, *v;
|
28
|
3362
|
122
|
3363 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
3364 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
3365 if (var == NULL) {
|
|
3366 return NGX_ERROR;
|
|
3367 }
|
|
3368
|
186
|
3369 var->get_handler = v->get_handler;
|
122
|
3370 var->data = v->data;
|
|
3371 }
|
|
3372
|
28
|
3373 return NGX_OK;
|
|
3374 }
|
58
|
3375
|
|
3376
|
122
|
3377 static ngx_int_t
|
298
|
3378 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
3379 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3380 {
|
|
3381 u_char *p;
|
|
3382 size_t len;
|
|
3383 ngx_uint_t i;
|
|
3384 ngx_http_upstream_state_t *state;
|
|
3385
|
|
3386 v->valid = 1;
|
340
|
3387 v->no_cacheable = 0;
|
298
|
3388 v->not_found = 0;
|
|
3389
|
|
3390 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3391 v->not_found = 1;
|
|
3392 return NGX_OK;
|
|
3393 }
|
|
3394
|
|
3395 len = 0;
|
|
3396 state = r->upstream_states->elts;
|
|
3397
|
|
3398 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
3399 if (state[i].peer) {
|
|
3400 len += state[i].peer->len + 2;
|
|
3401
|
|
3402 } else {
|
|
3403 len += 3;
|
|
3404 }
|
|
3405 }
|
|
3406
|
382
|
3407 p = ngx_pnalloc(r->pool, len);
|
298
|
3408 if (p == NULL) {
|
|
3409 return NGX_ERROR;
|
|
3410 }
|
|
3411
|
|
3412 v->data = p;
|
|
3413
|
|
3414 i = 0;
|
|
3415
|
|
3416 for ( ;; ) {
|
|
3417 if (state[i].peer) {
|
|
3418 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
3419 }
|
|
3420
|
|
3421 if (++i == r->upstream_states->nelts) {
|
|
3422 break;
|
|
3423 }
|
|
3424
|
|
3425 if (state[i].peer) {
|
|
3426 *p++ = ',';
|
|
3427 *p++ = ' ';
|
|
3428
|
|
3429 } else {
|
|
3430 *p++ = ' ';
|
|
3431 *p++ = ':';
|
|
3432 *p++ = ' ';
|
|
3433
|
|
3434 if (++i == r->upstream_states->nelts) {
|
|
3435 break;
|
|
3436 }
|
|
3437
|
|
3438 continue;
|
|
3439 }
|
|
3440 }
|
|
3441
|
|
3442 v->len = p - v->data;
|
|
3443
|
|
3444 return NGX_OK;
|
|
3445 }
|
|
3446
|
|
3447
|
|
3448 static ngx_int_t
|
122
|
3449 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
3450 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3451 {
|
|
3452 u_char *p;
|
|
3453 size_t len;
|
|
3454 ngx_uint_t i;
|
|
3455 ngx_http_upstream_state_t *state;
|
|
3456
|
|
3457 v->valid = 1;
|
340
|
3458 v->no_cacheable = 0;
|
122
|
3459 v->not_found = 0;
|
|
3460
|
296
|
3461 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3462 v->not_found = 1;
|
|
3463 return NGX_OK;
|
|
3464 }
|
|
3465
|
296
|
3466 len = r->upstream_states->nelts * (3 + 2);
|
122
|
3467
|
382
|
3468 p = ngx_pnalloc(r->pool, len);
|
122
|
3469 if (p == NULL) {
|
|
3470 return NGX_ERROR;
|
|
3471 }
|
|
3472
|
|
3473 v->data = p;
|
|
3474
|
|
3475 i = 0;
|
296
|
3476 state = r->upstream_states->elts;
|
122
|
3477
|
|
3478 for ( ;; ) {
|
296
|
3479 if (state[i].status) {
|
|
3480 p = ngx_sprintf(p, "%ui", state[i].status);
|
122
|
3481
|
|
3482 } else {
|
296
|
3483 *p++ = '-';
|
122
|
3484 }
|
|
3485
|
296
|
3486 if (++i == r->upstream_states->nelts) {
|
122
|
3487 break;
|
|
3488 }
|
|
3489
|
296
|
3490 if (state[i].peer) {
|
|
3491 *p++ = ',';
|
|
3492 *p++ = ' ';
|
|
3493
|
|
3494 } else {
|
|
3495 *p++ = ' ';
|
|
3496 *p++ = ':';
|
|
3497 *p++ = ' ';
|
|
3498
|
|
3499 if (++i == r->upstream_states->nelts) {
|
|
3500 break;
|
|
3501 }
|
|
3502
|
|
3503 continue;
|
|
3504 }
|
122
|
3505 }
|
|
3506
|
|
3507 v->len = p - v->data;
|
|
3508
|
|
3509 return NGX_OK;
|
|
3510 }
|
|
3511
|
|
3512
|
|
3513 static ngx_int_t
|
|
3514 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
3515 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3516 {
|
|
3517 u_char *p;
|
|
3518 size_t len;
|
|
3519 ngx_uint_t i;
|
262
|
3520 ngx_msec_int_t ms;
|
122
|
3521 ngx_http_upstream_state_t *state;
|
|
3522
|
|
3523 v->valid = 1;
|
340
|
3524 v->no_cacheable = 0;
|
122
|
3525 v->not_found = 0;
|
|
3526
|
296
|
3527 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3528 v->not_found = 1;
|
|
3529 return NGX_OK;
|
|
3530 }
|
|
3531
|
296
|
3532 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
122
|
3533
|
382
|
3534 p = ngx_pnalloc(r->pool, len);
|
122
|
3535 if (p == NULL) {
|
|
3536 return NGX_ERROR;
|
|
3537 }
|
|
3538
|
|
3539 v->data = p;
|
|
3540
|
|
3541 i = 0;
|
296
|
3542 state = r->upstream_states->elts;
|
122
|
3543
|
|
3544 for ( ;; ) {
|
296
|
3545 if (state[i].status) {
|
346
|
3546 ms = (ngx_msec_int_t)
|
|
3547 (state[i].response_sec * 1000 + state[i].response_msec);
|
262
|
3548 ms = (ms >= 0) ? ms : 0;
|
|
3549 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
296
|
3550
|
|
3551 } else {
|
|
3552 *p++ = '-';
|
122
|
3553 }
|
|
3554
|
296
|
3555 if (++i == r->upstream_states->nelts) {
|
122
|
3556 break;
|
|
3557 }
|
|
3558
|
296
|
3559 if (state[i].peer) {
|
|
3560 *p++ = ',';
|
|
3561 *p++ = ' ';
|
|
3562
|
|
3563 } else {
|
|
3564 *p++ = ' ';
|
|
3565 *p++ = ':';
|
|
3566 *p++ = ' ';
|
|
3567
|
|
3568 if (++i == r->upstream_states->nelts) {
|
|
3569 break;
|
|
3570 }
|
|
3571
|
|
3572 continue;
|
|
3573 }
|
122
|
3574 }
|
|
3575
|
|
3576 v->len = p - v->data;
|
|
3577
|
|
3578 return NGX_OK;
|
|
3579 }
|
|
3580
|
|
3581
|
459
|
3582 static ngx_int_t
|
|
3583 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
3584 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3585 {
|
|
3586 u_char *p;
|
|
3587 size_t len;
|
|
3588 ngx_uint_t i;
|
|
3589 ngx_http_upstream_state_t *state;
|
|
3590
|
|
3591 v->valid = 1;
|
|
3592 v->no_cacheable = 0;
|
|
3593 v->not_found = 0;
|
|
3594
|
|
3595 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3596 v->not_found = 1;
|
|
3597 return NGX_OK;
|
|
3598 }
|
|
3599
|
|
3600 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
3601
|
|
3602 p = ngx_pnalloc(r->pool, len);
|
|
3603 if (p == NULL) {
|
|
3604 return NGX_ERROR;
|
|
3605 }
|
|
3606
|
|
3607 v->data = p;
|
|
3608
|
|
3609 i = 0;
|
|
3610 state = r->upstream_states->elts;
|
|
3611
|
|
3612 for ( ;; ) {
|
|
3613 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
3614
|
|
3615 if (++i == r->upstream_states->nelts) {
|
|
3616 break;
|
|
3617 }
|
|
3618
|
|
3619 if (state[i].peer) {
|
|
3620 *p++ = ',';
|
|
3621 *p++ = ' ';
|
|
3622
|
|
3623 } else {
|
|
3624 *p++ = ' ';
|
|
3625 *p++ = ':';
|
|
3626 *p++ = ' ';
|
|
3627
|
|
3628 if (++i == r->upstream_states->nelts) {
|
|
3629 break;
|
|
3630 }
|
|
3631
|
|
3632 continue;
|
|
3633 }
|
|
3634 }
|
|
3635
|
|
3636 v->len = p - v->data;
|
|
3637
|
|
3638 return NGX_OK;
|
|
3639 }
|
|
3640
|
|
3641
|
296
|
3642 ngx_int_t
|
|
3643 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
3644 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3645 {
|
|
3646 if (r->upstream == NULL) {
|
|
3647 v->not_found = 1;
|
|
3648 return NGX_OK;
|
|
3649 }
|
|
3650
|
|
3651 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
3652 &r->upstream->headers_in.headers.part,
|
|
3653 sizeof("upstream_http_") - 1);
|
|
3654 }
|
|
3655
|
|
3656
|
200
|
3657 static char *
|
|
3658 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
3659 {
|
260
|
3660 char *rv;
|
|
3661 void *mconf;
|
|
3662 ngx_str_t *value;
|
|
3663 ngx_url_t u;
|
|
3664 ngx_uint_t m;
|
|
3665 ngx_conf_t pcf;
|
|
3666 ngx_http_module_t *module;
|
|
3667 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
3668 ngx_http_upstream_srv_conf_t *uscf;
|
|
3669
|
|
3670 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3671
|
|
3672 value = cf->args->elts;
|
|
3673 u.host = value[1];
|
|
3674 u.no_resolve = 1;
|
|
3675
|
|
3676 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
3677 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
3678 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
3679 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
3680 |NGX_HTTP_UPSTREAM_DOWN
|
|
3681 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
3682 if (uscf == NULL) {
|
|
3683 return NGX_CONF_ERROR;
|
|
3684 }
|
|
3685
|
200
|
3686
|
|
3687 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
3688 if (ctx == NULL) {
|
|
3689 return NGX_CONF_ERROR;
|
|
3690 }
|
|
3691
|
260
|
3692 http_ctx = cf->ctx;
|
|
3693 ctx->main_conf = http_ctx->main_conf;
|
200
|
3694
|
|
3695 /* the upstream{}'s srv_conf */
|
|
3696
|
|
3697 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3698 if (ctx->srv_conf == NULL) {
|
|
3699 return NGX_CONF_ERROR;
|
|
3700 }
|
|
3701
|
|
3702 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
3703
|
260
|
3704 uscf->srv_conf = ctx->srv_conf;
|
|
3705
|
200
|
3706
|
|
3707 /* the upstream{}'s loc_conf */
|
|
3708
|
|
3709 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3710 if (ctx->loc_conf == NULL) {
|
|
3711 return NGX_CONF_ERROR;
|
|
3712 }
|
|
3713
|
|
3714 for (m = 0; ngx_modules[m]; m++) {
|
|
3715 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
3716 continue;
|
|
3717 }
|
|
3718
|
|
3719 module = ngx_modules[m]->ctx;
|
|
3720
|
260
|
3721 if (module->create_srv_conf) {
|
|
3722 mconf = module->create_srv_conf(cf);
|
|
3723 if (mconf == NULL) {
|
|
3724 return NGX_CONF_ERROR;
|
|
3725 }
|
|
3726
|
|
3727 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3728 }
|
|
3729
|
200
|
3730 if (module->create_loc_conf) {
|
|
3731 mconf = module->create_loc_conf(cf);
|
|
3732 if (mconf == NULL) {
|
|
3733 return NGX_CONF_ERROR;
|
|
3734 }
|
|
3735
|
|
3736 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3737 }
|
|
3738 }
|
|
3739
|
|
3740
|
|
3741 /* parse inside upstream{} */
|
|
3742
|
|
3743 pcf = *cf;
|
|
3744 cf->ctx = ctx;
|
|
3745 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
3746
|
|
3747 rv = ngx_conf_parse(cf, NULL);
|
|
3748
|
|
3749 *cf = pcf;
|
|
3750
|
|
3751 if (rv != NGX_CONF_OK) {
|
|
3752 return rv;
|
|
3753 }
|
|
3754
|
|
3755 if (uscf->servers == NULL) {
|
|
3756 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3757 "no servers are inside upstream");
|
|
3758 return NGX_CONF_ERROR;
|
|
3759 }
|
|
3760
|
|
3761 return rv;
|
|
3762 }
|
|
3763
|
|
3764
|
|
3765 static char *
|
|
3766 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
3767 {
|
|
3768 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
3769
|
260
|
3770 time_t fail_timeout;
|
|
3771 ngx_str_t *value, s;
|
|
3772 ngx_url_t u;
|
|
3773 ngx_int_t weight, max_fails;
|
|
3774 ngx_uint_t i;
|
|
3775 ngx_http_upstream_server_t *us;
|
200
|
3776
|
|
3777 if (uscf->servers == NULL) {
|
260
|
3778 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
3779 sizeof(ngx_http_upstream_server_t));
|
200
|
3780 if (uscf->servers == NULL) {
|
|
3781 return NGX_CONF_ERROR;
|
|
3782 }
|
|
3783 }
|
|
3784
|
260
|
3785 us = ngx_array_push(uscf->servers);
|
|
3786 if (us == NULL) {
|
200
|
3787 return NGX_CONF_ERROR;
|
|
3788 }
|
|
3789
|
260
|
3790 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
3791
|
200
|
3792 value = cf->args->elts;
|
|
3793
|
|
3794 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3795
|
|
3796 u.url = value[1];
|
266
|
3797 u.default_port = 80;
|
200
|
3798
|
340
|
3799 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
200
|
3800 if (u.err) {
|
|
3801 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3802 "%s in upstream \"%V\"", u.err, &u.url);
|
|
3803 }
|
|
3804
|
|
3805 return NGX_CONF_ERROR;
|
|
3806 }
|
|
3807
|
212
|
3808 weight = 1;
|
260
|
3809 max_fails = 1;
|
|
3810 fail_timeout = 10;
|
|
3811
|
|
3812 for (i = 2; i < cf->args->nelts; i++) {
|
|
3813
|
|
3814 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
3815
|
|
3816 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
3817 goto invalid;
|
|
3818 }
|
|
3819
|
|
3820 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
212
|
3821
|
|
3822 if (weight == NGX_ERROR || weight == 0) {
|
|
3823 goto invalid;
|
|
3824 }
|
|
3825
|
260
|
3826 continue;
|
|
3827 }
|
|
3828
|
|
3829 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
3830
|
|
3831 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
3832 goto invalid;
|
|
3833 }
|
|
3834
|
|
3835 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
3836
|
|
3837 if (max_fails == NGX_ERROR) {
|
|
3838 goto invalid;
|
|
3839 }
|
|
3840
|
|
3841 continue;
|
212
|
3842 }
|
260
|
3843
|
|
3844 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
3845
|
|
3846 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
3847 goto invalid;
|
|
3848 }
|
|
3849
|
|
3850 s.len = value[i].len - 13;
|
|
3851 s.data = &value[i].data[13];
|
|
3852
|
|
3853 fail_timeout = ngx_parse_time(&s, 1);
|
|
3854
|
372
|
3855 if (fail_timeout == NGX_ERROR) {
|
260
|
3856 goto invalid;
|
|
3857 }
|
|
3858
|
|
3859 continue;
|
|
3860 }
|
|
3861
|
326
|
3862 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
3863
|
|
3864 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
3865 goto invalid;
|
|
3866 }
|
|
3867
|
|
3868 us->backup = 1;
|
|
3869
|
|
3870 continue;
|
|
3871 }
|
|
3872
|
260
|
3873 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
3874
|
|
3875 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
3876 goto invalid;
|
|
3877 }
|
|
3878
|
|
3879 us->down = 1;
|
|
3880
|
|
3881 continue;
|
|
3882 }
|
|
3883
|
|
3884 goto invalid;
|
212
|
3885 }
|
|
3886
|
260
|
3887 us->addrs = u.addrs;
|
|
3888 us->naddrs = u.naddrs;
|
|
3889 us->weight = weight;
|
|
3890 us->max_fails = max_fails;
|
|
3891 us->fail_timeout = fail_timeout;
|
200
|
3892
|
|
3893 return NGX_CONF_OK;
|
212
|
3894
|
|
3895 invalid:
|
|
3896
|
260
|
3897 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3898 "invalid parameter \"%V\"", &value[i]);
|
212
|
3899
|
|
3900 return NGX_CONF_ERROR;
|
200
|
3901 }
|
|
3902
|
|
3903
|
|
3904 ngx_http_upstream_srv_conf_t *
|
260
|
3905 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
200
|
3906 {
|
|
3907 ngx_uint_t i;
|
260
|
3908 ngx_http_upstream_server_t *us;
|
200
|
3909 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
3910 ngx_http_upstream_main_conf_t *umcf;
|
|
3911
|
260
|
3912 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
3913
|
340
|
3914 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
200
|
3915 if (u->err) {
|
|
3916 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3917 "%s in upstream \"%V\"", u->err, &u->url);
|
|
3918 }
|
|
3919
|
|
3920 return NULL;
|
|
3921 }
|
|
3922 }
|
|
3923
|
|
3924 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
3925
|
|
3926 uscfp = umcf->upstreams.elts;
|
|
3927
|
|
3928 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
266
|
3929
|
|
3930 if (uscfp[i]->host.len != u->host.len
|
260
|
3931 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
3932 != 0)
|
|
3933 {
|
200
|
3934 continue;
|
|
3935 }
|
|
3936
|
260
|
3937 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
3938 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
200
|
3939 {
|
260
|
3940 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3941 "duplicate upstream \"%V\"", &u->host);
|
|
3942 return NULL;
|
200
|
3943 }
|
260
|
3944
|
266
|
3945 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
260
|
3946 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
266
|
3947 "upstream \"%V\" may not have port %d",
|
|
3948 &u->host, u->port);
|
|
3949 return NULL;
|
|
3950 }
|
|
3951
|
|
3952 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
3953 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
3954 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
3955 &u->host, uscfp[i]->port,
|
336
|
3956 uscfp[i]->file_name, uscfp[i]->line);
|
266
|
3957 return NULL;
|
|
3958 }
|
|
3959
|
|
3960 if (uscfp[i]->port != u->port) {
|
|
3961 continue;
|
260
|
3962 }
|
|
3963
|
324
|
3964 if (uscfp[i]->default_port && u->default_port
|
|
3965 && uscfp[i]->default_port != u->default_port)
|
|
3966 {
|
|
3967 continue;
|
|
3968 }
|
|
3969
|
260
|
3970 return uscfp[i];
|
200
|
3971 }
|
|
3972
|
|
3973 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
3974 if (uscf == NULL) {
|
|
3975 return NULL;
|
|
3976 }
|
|
3977
|
260
|
3978 uscf->flags = flags;
|
200
|
3979 uscf->host = u->host;
|
336
|
3980 uscf->file_name = cf->conf_file->file.name.data;
|
200
|
3981 uscf->line = cf->conf_file->line;
|
266
|
3982 uscf->port = u->port;
|
|
3983 uscf->default_port = u->default_port;
|
260
|
3984
|
|
3985 if (u->naddrs == 1) {
|
|
3986 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
3987 sizeof(ngx_http_upstream_server_t));
|
|
3988 if (uscf->servers == NULL) {
|
|
3989 return NGX_CONF_ERROR;
|
|
3990 }
|
|
3991
|
|
3992 us = ngx_array_push(uscf->servers);
|
|
3993 if (us == NULL) {
|
|
3994 return NGX_CONF_ERROR;
|
|
3995 }
|
|
3996
|
|
3997 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
3998
|
|
3999 us->addrs = u->addrs;
|
|
4000 us->naddrs = u->naddrs;
|
|
4001 }
|
200
|
4002
|
|
4003 uscfp = ngx_array_push(&umcf->upstreams);
|
|
4004 if (uscfp == NULL) {
|
|
4005 return NULL;
|
|
4006 }
|
|
4007
|
|
4008 *uscfp = uscf;
|
|
4009
|
|
4010 return uscf;
|
|
4011 }
|
|
4012
|
|
4013
|
356
|
4014 ngx_int_t
|
|
4015 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
4016 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
4017 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
4018 {
|
|
4019 ngx_str_t *h;
|
|
4020 ngx_uint_t i, j;
|
|
4021 ngx_array_t hide_headers;
|
|
4022 ngx_hash_key_t *hk;
|
|
4023
|
|
4024 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
4025 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
4026 {
|
|
4027 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
4028
|
|
4029 if (conf->hide_headers_hash.buckets) {
|
|
4030 return NGX_OK;
|
|
4031 }
|
|
4032
|
|
4033 conf->hide_headers = prev->hide_headers;
|
|
4034 conf->pass_headers = prev->pass_headers;
|
|
4035
|
|
4036 } else {
|
|
4037 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
4038 conf->hide_headers = prev->hide_headers;
|
|
4039 }
|
|
4040
|
|
4041 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
4042 conf->pass_headers = prev->pass_headers;
|
|
4043 }
|
|
4044 }
|
|
4045
|
|
4046 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
4047 != NGX_OK)
|
|
4048 {
|
|
4049 return NGX_ERROR;
|
|
4050 }
|
|
4051
|
|
4052 for (h = default_hide_headers; h->len; h++) {
|
|
4053 hk = ngx_array_push(&hide_headers);
|
|
4054 if (hk == NULL) {
|
|
4055 return NGX_ERROR;
|
|
4056 }
|
|
4057
|
|
4058 hk->key = *h;
|
|
4059 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
4060 hk->value = (void *) 1;
|
|
4061 }
|
|
4062
|
|
4063 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
4064
|
|
4065 h = conf->hide_headers->elts;
|
|
4066
|
|
4067 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
4068
|
|
4069 hk = hide_headers.elts;
|
|
4070
|
|
4071 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4072 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4073 goto exist;
|
|
4074 }
|
|
4075 }
|
|
4076
|
|
4077 hk = ngx_array_push(&hide_headers);
|
|
4078 if (hk == NULL) {
|
|
4079 return NGX_ERROR;
|
|
4080 }
|
|
4081
|
|
4082 hk->key = h[i];
|
|
4083 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
4084 hk->value = (void *) 1;
|
|
4085
|
|
4086 exist:
|
|
4087
|
|
4088 continue;
|
|
4089 }
|
|
4090 }
|
|
4091
|
|
4092 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
4093
|
|
4094 h = conf->pass_headers->elts;
|
|
4095 hk = hide_headers.elts;
|
|
4096
|
|
4097 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
4098 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4099
|
|
4100 if (hk[j].key.data == NULL) {
|
|
4101 continue;
|
|
4102 }
|
|
4103
|
|
4104 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4105 hk[j].key.data = NULL;
|
|
4106 break;
|
|
4107 }
|
|
4108 }
|
|
4109 }
|
|
4110 }
|
|
4111
|
|
4112 hash->hash = &conf->hide_headers_hash;
|
|
4113 hash->key = ngx_hash_key_lc;
|
|
4114 hash->pool = cf->pool;
|
|
4115 hash->temp_pool = NULL;
|
|
4116
|
|
4117 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
4118 }
|
|
4119
|
|
4120
|
58
|
4121 static void *
|
|
4122 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
4123 {
|
|
4124 ngx_http_upstream_main_conf_t *umcf;
|
|
4125
|
|
4126 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
4127 if (umcf == NULL) {
|
|
4128 return NULL;
|
|
4129 }
|
|
4130
|
200
|
4131 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
4132 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
4133 != NGX_OK)
|
|
4134 {
|
|
4135 return NGX_CONF_ERROR;
|
|
4136 }
|
|
4137
|
58
|
4138 return umcf;
|
|
4139 }
|
|
4140
|
|
4141
|
|
4142 static char *
|
200
|
4143 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
58
|
4144 {
|
|
4145 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
4146
|
200
|
4147 ngx_uint_t i;
|
|
4148 ngx_array_t headers_in;
|
|
4149 ngx_hash_key_t *hk;
|
|
4150 ngx_hash_init_t hash;
|
260
|
4151 ngx_http_upstream_init_pt init;
|
200
|
4152 ngx_http_upstream_header_t *header;
|
|
4153 ngx_http_upstream_srv_conf_t **uscfp;
|
|
4154
|
|
4155 uscfp = umcf->upstreams.elts;
|
|
4156
|
|
4157 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
260
|
4158
|
|
4159 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
4160 ngx_http_upstream_init_round_robin;
|
|
4161
|
|
4162 if (init(cf, uscfp[i]) != NGX_OK) {
|
200
|
4163 return NGX_CONF_ERROR;
|
|
4164 }
|
|
4165 }
|
198
|
4166
|
212
|
4167
|
260
|
4168 /* upstream_headers_in_hash */
|
|
4169
|
198
|
4170 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
4171 != NGX_OK)
|
58
|
4172 {
|
|
4173 return NGX_CONF_ERROR;
|
|
4174 }
|
|
4175
|
198
|
4176 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
4177 hk = ngx_array_push(&headers_in);
|
|
4178 if (hk == NULL) {
|
|
4179 return NGX_CONF_ERROR;
|
|
4180 }
|
|
4181
|
|
4182 hk->key = header->name;
|
|
4183 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
4184 hk->value = header;
|
|
4185 }
|
|
4186
|
|
4187 hash.hash = &umcf->headers_in_hash;
|
|
4188 hash.key = ngx_hash_key_lc;
|
|
4189 hash.max_size = 512;
|
244
|
4190 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
198
|
4191 hash.name = "upstream_headers_in_hash";
|
|
4192 hash.pool = cf->pool;
|
|
4193 hash.temp_pool = NULL;
|
|
4194
|
|
4195 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
4196 return NGX_CONF_ERROR;
|
|
4197 }
|
58
|
4198
|
|
4199 return NGX_CONF_OK;
|
|
4200 }
|