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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464
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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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502
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17 static ngx_int_t ngx_http_upstream_cache_status(ngx_http_request_t *r,
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18 ngx_http_variable_value_t *v, uintptr_t data);
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464
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19 #endif
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20
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518
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21 static void ngx_http_upstream_init_request(ngx_http_request_t *r);
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348
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22 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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23 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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24 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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25 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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26 ngx_event_t *ev);
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28
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27 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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28 ngx_http_upstream_t *u);
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58
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29 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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30 ngx_http_upstream_t *u);
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28
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31 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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32 ngx_http_upstream_t *u);
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430
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33 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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34 ngx_http_upstream_t *u);
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35 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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36 ngx_http_upstream_t *u);
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412
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37 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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38 ngx_http_upstream_t *u);
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39 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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40 ngx_http_upstream_t *u);
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294
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41 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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464
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42 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
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43 ngx_http_upstream_t *u);
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430
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44 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
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45 ngx_http_upstream_t *u);
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28
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46 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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47 ngx_http_upstream_t *u);
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130
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48 static void
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49 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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430
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50 static void
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51 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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52 ngx_http_upstream_t *u);
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428
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53 static void
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54 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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55 ngx_uint_t do_write);
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130
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56 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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57 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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58 ssize_t bytes);
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58
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59 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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430
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60 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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61 ngx_http_upstream_t *u);
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428
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62 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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63 static void ngx_http_upstream_store(ngx_http_request_t *r,
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64 ngx_http_upstream_t *u);
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430
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65 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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66 ngx_http_upstream_t *u);
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28
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67 static void ngx_http_upstream_next(ngx_http_request_t *r,
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68 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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69 static void ngx_http_upstream_cleanup(void *data);
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28
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70 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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71 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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72
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58
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73 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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75 static ngx_int_t
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472
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76 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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77 ngx_table_elt_t *h, ngx_uint_t offset);
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78 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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79 ngx_table_elt_t *h, ngx_uint_t offset);
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472
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80 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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81 ngx_table_elt_t *h, ngx_uint_t offset);
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82 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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83 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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84 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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85 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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86 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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87 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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88 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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90 static ngx_int_t ngx_http_upstream_copy_header_line(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
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93 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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94 ngx_table_elt_t *h, ngx_uint_t offset);
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95 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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96 ngx_table_elt_t *h, ngx_uint_t offset);
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97 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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98 ngx_table_elt_t *h, ngx_uint_t offset);
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464
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99 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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100 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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101 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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102 ngx_table_elt_t *h, ngx_uint_t offset);
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103 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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104 ngx_table_elt_t *h, ngx_uint_t offset);
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464
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105 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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106 ngx_table_elt_t *h, ngx_uint_t offset);
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107
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58
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108 #if (NGX_HTTP_GZIP)
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109 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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110 ngx_table_elt_t *h, ngx_uint_t offset);
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111 #endif
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112
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122
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113 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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114 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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115 ngx_http_variable_value_t *v, uintptr_t data);
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122
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116 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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117 ngx_http_variable_value_t *v, uintptr_t data);
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118 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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119 ngx_http_variable_value_t *v, uintptr_t data);
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430
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120 static ngx_int_t ngx_http_upstream_response_length_variable(
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121 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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122
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200
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123 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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124 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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125 void *conf);
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126
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58
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127 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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128 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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129
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126
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130 #if (NGX_HTTP_SSL)
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140
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131 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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132 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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133 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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134 #endif
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135
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58
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136
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137 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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138
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139 { ngx_string("Status"),
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140 ngx_http_upstream_process_header_line,
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141 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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142 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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143
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144 { ngx_string("Content-Type"),
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145 ngx_http_upstream_process_header_line,
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146 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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147 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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148
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149 { ngx_string("Content-Length"),
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150 ngx_http_upstream_process_header_line,
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151 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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152 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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153
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154 { ngx_string("Date"),
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155 ngx_http_upstream_process_header_line,
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156 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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157 ngx_http_upstream_copy_header_line,
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158 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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159
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318
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160 { ngx_string("Last-Modified"),
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161 ngx_http_upstream_process_header_line,
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162 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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464
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163 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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164
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516
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165 { ngx_string("ETag"),
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166 ngx_http_upstream_process_header_line,
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167 offsetof(ngx_http_upstream_headers_in_t, etag),
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168 ngx_http_upstream_copy_header_line,
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169 offsetof(ngx_http_headers_out_t, etag), 0 },
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170
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58
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171 { ngx_string("Server"),
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172 ngx_http_upstream_process_header_line,
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173 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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174 ngx_http_upstream_copy_header_line,
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175 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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176
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78
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177 { ngx_string("WWW-Authenticate"),
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178 ngx_http_upstream_process_header_line,
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179 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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180 ngx_http_upstream_copy_header_line, 0, 0 },
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181
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58
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182 { ngx_string("Location"),
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392
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183 ngx_http_upstream_process_header_line,
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184 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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185 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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186
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187 { ngx_string("Refresh"),
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188 ngx_http_upstream_ignore_header_line, 0,
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64
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189 ngx_http_upstream_rewrite_refresh, 0, 0 },
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190
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191 { ngx_string("Set-Cookie"),
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192 ngx_http_upstream_ignore_header_line, 0,
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80
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193 ngx_http_upstream_copy_header_line, 0, 1 },
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194
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195 { ngx_string("Content-Disposition"),
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196 ngx_http_upstream_ignore_header_line, 0,
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197 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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198
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199 { ngx_string("Cache-Control"),
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472
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200 ngx_http_upstream_process_cache_control, 0,
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201 ngx_http_upstream_copy_multi_header_lines,
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202 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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203
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122
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204 { ngx_string("Expires"),
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472
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205 ngx_http_upstream_process_expires, 0,
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122
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206 ngx_http_upstream_copy_header_line,
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207 offsetof(ngx_http_headers_out_t, expires), 1 },
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208
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126
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209 { ngx_string("Accept-Ranges"),
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210 ngx_http_upstream_process_header_line,
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211 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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464
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212 ngx_http_upstream_copy_allow_ranges,
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126
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213 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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214
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58
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215 { ngx_string("Connection"),
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216 ngx_http_upstream_ignore_header_line, 0,
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64
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217 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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218
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190
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219 { ngx_string("Keep-Alive"),
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220 ngx_http_upstream_ignore_header_line, 0,
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221 ngx_http_upstream_ignore_header_line, 0, 0 },
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222
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58
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223 { ngx_string("X-Powered-By"),
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224 ngx_http_upstream_ignore_header_line, 0,
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198
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225 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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226
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227 { ngx_string("X-Accel-Expires"),
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472
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228 ngx_http_upstream_process_accel_expires, 0,
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198
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229 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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230
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231 { ngx_string("X-Accel-Redirect"),
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232 ngx_http_upstream_process_header_line,
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233 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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510
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234 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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235
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76
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236 { ngx_string("X-Accel-Limit-Rate"),
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237 ngx_http_upstream_process_limit_rate, 0,
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510
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238 ngx_http_upstream_copy_header_line, 0, 0 },
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76
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239
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198
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240 { ngx_string("X-Accel-Buffering"),
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241 ngx_http_upstream_process_buffering, 0,
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510
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242 ngx_http_upstream_copy_header_line, 0, 0 },
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198
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243
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206
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244 { ngx_string("X-Accel-Charset"),
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245 ngx_http_upstream_process_charset, 0,
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510
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246 ngx_http_upstream_copy_header_line, 0, 0 },
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206
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247
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58
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248 #if (NGX_HTTP_GZIP)
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249 { ngx_string("Content-Encoding"),
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250 ngx_http_upstream_process_header_line,
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251 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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252 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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253 #endif
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254
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64
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255 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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256 };
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28
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257
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258
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200
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259 static ngx_command_t ngx_http_upstream_commands[] = {
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260
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261 { ngx_string("upstream"),
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262 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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263 ngx_http_upstream,
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264 0,
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265 0,
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266 NULL },
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267
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268 { ngx_string("server"),
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260
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269 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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270 ngx_http_upstream_server,
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271 NGX_HTTP_SRV_CONF_OFFSET,
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272 0,
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273 NULL },
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274
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275 ngx_null_command
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276 };
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277
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278
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279 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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280 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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281 NULL, /* postconfiguration */
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282
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283 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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284 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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285
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286 NULL, /* create server configuration */
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287 NULL, /* merge server configuration */
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288
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289 NULL, /* create location configuration */
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290 NULL /* merge location configuration */
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291 };
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126
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292
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28
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293
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294 ngx_module_t ngx_http_upstream_module = {
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58
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295 NGX_MODULE_V1,
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28
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296 &ngx_http_upstream_module_ctx, /* module context */
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200
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297 ngx_http_upstream_commands, /* module directives */
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28
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298 NGX_HTTP_MODULE, /* module type */
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90
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299 NULL, /* init master */
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28
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300 NULL, /* init module */
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90
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301 NULL, /* init process */
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302 NULL, /* init thread */
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303 NULL, /* exit thread */
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304 NULL, /* exit process */
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305 NULL, /* exit master */
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306 NGX_MODULE_V1_PADDING
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28
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307 };
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308
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309
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122
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310 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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311
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298
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312 { ngx_string("upstream_addr"), NULL,
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426
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313 ngx_http_upstream_addr_variable, 0,
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314 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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315
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186
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316 { ngx_string("upstream_status"), NULL,
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426
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317 ngx_http_upstream_status_variable, 0,
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318 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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319
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186
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320 { ngx_string("upstream_response_time"), NULL,
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426
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321 ngx_http_upstream_response_time_variable, 0,
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322 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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323
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430
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324 { ngx_string("upstream_response_length"), NULL,
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325 ngx_http_upstream_response_length_variable, 0,
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326 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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327
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504
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328 #if (NGX_HTTP_CACHE)
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329
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502
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330 { ngx_string("upstream_cache_status"), NULL,
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331 ngx_http_upstream_cache_status, 0,
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332 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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333
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504
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334 #endif
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335
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186
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336 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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337 };
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338
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339
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412
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340 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
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341 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
342 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
343 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
344 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
345 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
346 { 0, 0 }
|
|
347 };
|
|
348
|
494
|
349
|
|
350 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
351 { ngx_string("GET"), NGX_HTTP_GET},
|
|
352 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
353 { ngx_string("POST"), NGX_HTTP_POST },
|
|
354 { ngx_null_string, 0 }
|
|
355 };
|
|
356
|
|
357
|
510
|
358 ngx_int_t
|
|
359 ngx_http_upstream_create(ngx_http_request_t *r)
|
|
360 {
|
|
361 ngx_http_upstream_t *u;
|
|
362
|
|
363 u = r->upstream;
|
|
364
|
|
365 if (u && u->cleanup) {
|
526
|
366 r->main->count++;
|
510
|
367 ngx_http_upstream_cleanup(r);
|
|
368 }
|
|
369
|
|
370 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
371 if (u == NULL) {
|
|
372 return NGX_ERROR;
|
|
373 }
|
|
374
|
|
375 r->upstream = u;
|
|
376
|
|
377 u->peer.log = r->connection->log;
|
|
378 u->peer.log_error = NGX_ERROR_ERR;
|
|
379 #if (NGX_THREADS)
|
|
380 u->peer.lock = &r->connection->lock;
|
|
381 #endif
|
|
382
|
518
|
383 #if (NGX_HTTP_CACHE)
|
|
384 r->cache = NULL;
|
|
385 #endif
|
|
386
|
510
|
387 return NGX_OK;
|
|
388 }
|
|
389
|
|
390
|
36
|
391 void
|
|
392 ngx_http_upstream_init(ngx_http_request_t *r)
|
28
|
393 {
|
518
|
394 ngx_connection_t *c;
|
28
|
395
|
|
396 c = r->connection;
|
|
397
|
|
398 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
399 "http init upstream, client timer: %d", c->read->timer_set);
|
|
400
|
|
401 if (c->read->timer_set) {
|
|
402 ngx_del_timer(c->read);
|
|
403 }
|
|
404
|
|
405 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
406
|
|
407 if (!c->write->active) {
|
80
|
408 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
409 == NGX_ERROR)
|
28
|
410 {
|
|
411 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
412 return;
|
|
413 }
|
|
414 }
|
|
415 }
|
|
416
|
518
|
417 ngx_http_upstream_init_request(r);
|
|
418 }
|
|
419
|
|
420
|
|
421 static void
|
|
422 ngx_http_upstream_init_request(ngx_http_request_t *r)
|
|
423 {
|
|
424 ngx_str_t *host;
|
|
425 ngx_uint_t i;
|
|
426 ngx_resolver_ctx_t *ctx, temp;
|
|
427 ngx_http_cleanup_t *cln;
|
|
428 ngx_http_upstream_t *u;
|
|
429 ngx_http_core_loc_conf_t *clcf;
|
|
430 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
431 ngx_http_upstream_main_conf_t *umcf;
|
|
432
|
|
433 if (r->aio) {
|
|
434 return;
|
86
|
435 }
|
58
|
436
|
518
|
437 u = r->upstream;
|
|
438
|
464
|
439 #if (NGX_HTTP_CACHE)
|
|
440
|
|
441 if (u->conf->cache) {
|
|
442 ngx_int_t rc;
|
|
443
|
|
444 rc = ngx_http_upstream_cache(r, u);
|
|
445
|
518
|
446 if (rc == NGX_BUSY) {
|
|
447 r->write_event_handler = ngx_http_upstream_init_request;
|
|
448 return;
|
|
449 }
|
|
450
|
|
451 r->write_event_handler = ngx_http_request_empty_handler;
|
|
452
|
464
|
453 if (rc == NGX_DONE) {
|
|
454 return;
|
|
455 }
|
|
456
|
|
457 if (rc != NGX_DECLINED) {
|
|
458 ngx_http_finalize_request(r, rc);
|
|
459 return;
|
|
460 }
|
|
461 }
|
|
462
|
|
463 #endif
|
|
464
|
518
|
465 u->store = (u->conf->store || u->conf->store_lengths);
|
|
466
|
|
467 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
468 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
469 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
470 }
|
|
471
|
|
472 if (r->request_body) {
|
|
473 u->request_bufs = r->request_body->bufs;
|
|
474 }
|
|
475
|
86
|
476 if (u->create_request(r) != NGX_OK) {
|
28
|
477 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
478 return;
|
|
479 }
|
|
480
|
540
|
481 u->peer.local = u->conf->local;
|
|
482
|
58
|
483 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
28
|
484
|
518
|
485 u->output.alignment = clcf->directio_alignment;
|
28
|
486 u->output.pool = r->pool;
|
|
487 u->output.bufs.num = 1;
|
58
|
488 u->output.bufs.size = clcf->client_body_buffer_size;
|
28
|
489 u->output.output_filter = ngx_chain_writer;
|
|
490 u->output.filter_ctx = &u->writer;
|
|
491
|
|
492 u->writer.pool = r->pool;
|
|
493
|
296
|
494 if (r->upstream_states == NULL) {
|
|
495
|
|
496 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
497 sizeof(ngx_http_upstream_state_t));
|
|
498 if (r->upstream_states == NULL) {
|
|
499 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
500 return;
|
|
501 }
|
|
502
|
|
503 } else {
|
|
504
|
|
505 u->state = ngx_array_push(r->upstream_states);
|
|
506 if (u->state == NULL) {
|
|
507 ngx_http_upstream_finalize_request(r, u,
|
|
508 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
509 return;
|
|
510 }
|
|
511
|
|
512 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
28
|
513 }
|
|
514
|
142
|
515 cln = ngx_http_cleanup_add(r, 0);
|
118
|
516 if (cln == NULL) {
|
|
517 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
518 return;
|
|
519 }
|
|
520
|
|
521 cln->handler = ngx_http_upstream_cleanup;
|
|
522 cln->data = r;
|
|
523 u->cleanup = &cln->handler;
|
|
524
|
348
|
525 if (u->resolved == NULL) {
|
|
526
|
|
527 uscf = u->conf->upstream;
|
|
528
|
|
529 } else {
|
|
530
|
434
|
531 if (u->resolved->sockaddr) {
|
|
532
|
|
533 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
534 != NGX_OK)
|
|
535 {
|
530
|
536 ngx_http_upstream_finalize_request(r, u,
|
|
537 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
434
|
538 return;
|
|
539 }
|
|
540
|
|
541 ngx_http_upstream_connect(r, u);
|
|
542
|
|
543 return;
|
|
544 }
|
|
545
|
356
|
546 host = &u->resolved->host;
|
348
|
547
|
|
548 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
549
|
|
550 uscfp = umcf->upstreams.elts;
|
|
551
|
|
552 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
553
|
|
554 uscf = uscfp[i];
|
|
555
|
|
556 if (uscf->host.len == host->len
|
416
|
557 && ((uscf->port == 0 && u->resolved->no_port)
|
366
|
558 || uscf->port == u->resolved->port)
|
348
|
559 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
560 {
|
|
561 goto found;
|
|
562 }
|
|
563 }
|
|
564
|
|
565 temp.name = *host;
|
|
566
|
|
567 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
568 if (ctx == NULL) {
|
530
|
569 ngx_http_upstream_finalize_request(r, u,
|
|
570 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
571 return;
|
|
572 }
|
|
573
|
354
|
574 if (ctx == NGX_NO_RESOLVER) {
|
518
|
575 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
354
|
576 "no resolver defined to resolve %V", host);
|
|
577
|
530
|
578 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
354
|
579 return;
|
|
580 }
|
|
581
|
348
|
582 ctx->name = *host;
|
|
583 ctx->type = NGX_RESOLVE_A;
|
|
584 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
585 ctx->data = r;
|
|
586 ctx->timeout = clcf->resolver_timeout;
|
|
587
|
372
|
588 u->resolved->ctx = ctx;
|
|
589
|
348
|
590 if (ngx_resolve_name(ctx) != NGX_OK) {
|
372
|
591 u->resolved->ctx = NULL;
|
530
|
592 ngx_http_upstream_finalize_request(r, u,
|
|
593 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
594 return;
|
|
595 }
|
|
596
|
|
597 return;
|
|
598 }
|
|
599
|
|
600 found:
|
|
601
|
|
602 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
530
|
603 ngx_http_upstream_finalize_request(r, u,
|
|
604 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
605 return;
|
|
606 }
|
|
607
|
28
|
608 ngx_http_upstream_connect(r, u);
|
|
609 }
|
|
610
|
|
611
|
464
|
612 #if (NGX_HTTP_CACHE)
|
|
613
|
|
614 static ngx_int_t
|
|
615 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
616 {
|
|
617 ngx_int_t rc;
|
|
618 ngx_http_cache_t *c;
|
|
619
|
518
|
620 c = r->cache;
|
|
621
|
464
|
622 if (c == NULL) {
|
518
|
623
|
|
624 if (!(r->method & u->conf->cache_methods)) {
|
|
625 return NGX_DECLINED;
|
|
626 }
|
|
627
|
|
628 if (r->method & NGX_HTTP_HEAD) {
|
|
629 u->method = ngx_http_core_get_method;
|
|
630 }
|
|
631
|
|
632 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
|
|
633 if (c == NULL) {
|
|
634 return NGX_ERROR;
|
|
635 }
|
|
636
|
|
637 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
|
|
638 return NGX_ERROR;
|
|
639 }
|
|
640
|
|
641 r->cache = c;
|
|
642 c->file.log = r->connection->log;
|
|
643
|
|
644 if (u->create_key(r) != NGX_OK) {
|
|
645 return NGX_ERROR;
|
|
646 }
|
|
647
|
|
648 /* TODO: add keys */
|
|
649
|
|
650 ngx_http_file_cache_create_key(r);
|
|
651
|
|
652 u->cacheable = 1;
|
|
653
|
|
654 c->min_uses = u->conf->cache_min_uses;
|
|
655 c->body_start = u->conf->buffer_size;
|
|
656 c->file_cache = u->conf->cache->data;
|
|
657
|
|
658 u->cache_status = NGX_HTTP_CACHE_MISS;
|
464
|
659 }
|
|
660
|
|
661 rc = ngx_http_file_cache_open(r);
|
|
662
|
498
|
663 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
664 "http upstream cache: %i", rc);
|
|
665
|
502
|
666 switch (rc) {
|
|
667
|
|
668 case NGX_HTTP_CACHE_UPDATING:
|
|
669
|
498
|
670 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
502
|
671 u->cache_status = rc;
|
498
|
672 rc = NGX_OK;
|
|
673
|
|
674 } else {
|
|
675 rc = NGX_HTTP_CACHE_STALE;
|
|
676 }
|
502
|
677
|
|
678 break;
|
|
679
|
|
680 case NGX_OK:
|
|
681 u->cache_status = NGX_HTTP_CACHE_HIT;
|
498
|
682 }
|
464
|
683
|
502
|
684 switch (rc) {
|
|
685
|
|
686 case NGX_OK:
|
464
|
687
|
|
688 rc = ngx_http_upstream_cache_send(r, u);
|
|
689
|
|
690 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
691 return rc;
|
|
692 }
|
|
693
|
502
|
694 break;
|
|
695
|
|
696 case NGX_HTTP_CACHE_STALE:
|
464
|
697
|
472
|
698 c->valid_sec = 0;
|
464
|
699 u->buffer.start = NULL;
|
502
|
700 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
701
|
|
702 break;
|
|
703
|
|
704 case NGX_DECLINED:
|
464
|
705
|
|
706 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
707 u->buffer.start = NULL;
|
|
708
|
|
709 } else {
|
|
710 u->buffer.pos = u->buffer.start + c->header_start;
|
|
711 u->buffer.last = u->buffer.pos;
|
|
712 }
|
|
713
|
502
|
714 break;
|
|
715
|
518
|
716 case NGX_HTTP_CACHE_SCARCE:
|
464
|
717
|
|
718 u->cacheable = 0;
|
|
719
|
502
|
720 break;
|
|
721
|
518
|
722 case NGX_AGAIN:
|
|
723
|
|
724 return NGX_BUSY;
|
|
725
|
|
726 case NGX_ERROR:
|
|
727
|
|
728 return NGX_ERROR;
|
|
729
|
502
|
730 default:
|
464
|
731
|
|
732 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
733
|
502
|
734 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
735
|
464
|
736 return rc;
|
|
737 }
|
|
738
|
|
739 r->cached = 0;
|
|
740
|
|
741 return NGX_DECLINED;
|
|
742 }
|
|
743
|
|
744
|
|
745 static ngx_int_t
|
|
746 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
747 {
|
|
748 ngx_int_t rc;
|
|
749 ngx_http_cache_t *c;
|
|
750
|
502
|
751 r->cached = 1;
|
464
|
752 c = r->cache;
|
|
753
|
554
|
754 if (c->header_start == c->body_start) {
|
|
755 r->http_version = NGX_HTTP_VERSION_9;
|
|
756 return ngx_http_cache_send(r);
|
|
757 }
|
|
758
|
464
|
759 /* TODO: cache stack */
|
|
760
|
|
761 u->buffer = *c->buf;
|
|
762 u->buffer.pos += c->header_start;
|
|
763
|
|
764 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
765
|
|
766 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
767 sizeof(ngx_table_elt_t))
|
|
768 != NGX_OK)
|
|
769 {
|
|
770 return NGX_ERROR;
|
|
771 }
|
|
772
|
|
773 rc = u->process_header(r);
|
|
774
|
|
775 if (rc == NGX_OK) {
|
|
776
|
|
777 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
778 return NGX_DONE;
|
|
779 }
|
|
780
|
|
781 return ngx_http_cache_send(r);
|
|
782 }
|
|
783
|
|
784 if (rc == NGX_ERROR) {
|
|
785 return NGX_ERROR;
|
|
786 }
|
|
787
|
|
788 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
789
|
|
790 /* TODO: delete file */
|
|
791
|
|
792 return rc;
|
|
793 }
|
|
794
|
|
795 #endif
|
|
796
|
|
797
|
36
|
798 static void
|
348
|
799 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
800 {
|
|
801 ngx_http_request_t *r;
|
530
|
802 ngx_http_upstream_t *u;
|
348
|
803 ngx_http_upstream_resolved_t *ur;
|
|
804
|
|
805 r = ctx->data;
|
|
806
|
530
|
807 u = r->upstream;
|
|
808 ur = u->resolved;
|
348
|
809
|
|
810 if (ctx->state) {
|
|
811 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
812 "%V could not be resolved (%i: %s)",
|
|
813 &ctx->name, ctx->state,
|
|
814 ngx_resolver_strerror(ctx->state));
|
|
815
|
530
|
816 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
348
|
817 return;
|
|
818 }
|
|
819
|
|
820 ur->naddrs = ctx->naddrs;
|
|
821 ur->addrs = ctx->addrs;
|
|
822
|
|
823 #if (NGX_DEBUG)
|
|
824 {
|
|
825 in_addr_t addr;
|
|
826 ngx_uint_t i;
|
|
827
|
|
828 for (i = 0; i < ctx->naddrs; i++) {
|
|
829 addr = ntohl(ur->addrs[i]);
|
|
830
|
|
831 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
832 "name was resolved to %ud.%ud.%ud.%ud",
|
|
833 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
834 (addr >> 8) & 0xff, addr & 0xff);
|
|
835 }
|
|
836 }
|
|
837 #endif
|
|
838
|
|
839 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
530
|
840 ngx_http_upstream_finalize_request(r, u,
|
|
841 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
842 return;
|
|
843 }
|
|
844
|
|
845 ngx_resolve_name_done(ctx);
|
530
|
846 ur->ctx = NULL;
|
|
847
|
|
848 ngx_http_upstream_connect(r, u);
|
348
|
849 }
|
|
850
|
|
851
|
|
852 static void
|
426
|
853 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
854 {
|
|
855 ngx_connection_t *c;
|
|
856 ngx_http_request_t *r;
|
|
857 ngx_http_log_ctx_t *ctx;
|
|
858 ngx_http_upstream_t *u;
|
|
859
|
|
860 c = ev->data;
|
|
861 r = c->data;
|
|
862
|
|
863 u = r->upstream;
|
|
864 c = r->connection;
|
|
865
|
|
866 ctx = c->log->data;
|
|
867 ctx->current_request = r;
|
|
868
|
|
869 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
870 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
871
|
|
872 if (ev->write) {
|
430
|
873 u->write_event_handler(r, u);
|
426
|
874
|
|
875 } else {
|
430
|
876 u->read_event_handler(r, u);
|
426
|
877 }
|
|
878
|
|
879 ngx_http_run_posted_requests(c);
|
|
880 }
|
|
881
|
|
882
|
|
883 static void
|
58
|
884 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
885 {
|
|
886 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
887 }
|
|
888
|
|
889
|
|
890 static void
|
|
891 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
892 {
|
|
893 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
894 }
|
|
895
|
|
896
|
|
897 static void
|
|
898 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
899 ngx_event_t *ev)
|
28
|
900 {
|
|
901 int n;
|
|
902 char buf[1];
|
126
|
903 ngx_err_t err;
|
486
|
904 ngx_int_t event;
|
28
|
905 ngx_connection_t *c;
|
|
906 ngx_http_upstream_t *u;
|
|
907
|
76
|
908 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
909 "http upstream check client, write event:%d, \"%V\"",
|
|
910 ev->write, &r->uri);
|
28
|
911
|
58
|
912 c = r->connection;
|
32
|
913 u = r->upstream;
|
|
914
|
132
|
915 if (c->error) {
|
486
|
916 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
917
|
|
918 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
919
|
|
920 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
921 ngx_http_upstream_finalize_request(r, u,
|
|
922 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
923 return;
|
|
924 }
|
|
925 }
|
|
926
|
482
|
927 if (!u->cacheable) {
|
|
928 ngx_http_upstream_finalize_request(r, u,
|
|
929 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
930 }
|
486
|
931
|
76
|
932 return;
|
|
933 }
|
|
934
|
28
|
935 #if (NGX_HAVE_KQUEUE)
|
|
936
|
|
937 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
938
|
|
939 if (!ev->pending_eof) {
|
|
940 return;
|
|
941 }
|
|
942
|
|
943 ev->eof = 1;
|
132
|
944 c->error = 1;
|
28
|
945
|
|
946 if (ev->kq_errno) {
|
|
947 ev->error = 1;
|
|
948 }
|
|
949
|
482
|
950 if (!u->cacheable && u->peer.connection) {
|
28
|
951 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
76
|
952 "kevent() reported that client closed prematurely "
|
|
953 "connection, so upstream connection is closed too");
|
28
|
954 ngx_http_upstream_finalize_request(r, u,
|
|
955 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
956 return;
|
|
957 }
|
|
958
|
|
959 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
960 "kevent() reported that client closed "
|
|
961 "prematurely connection");
|
|
962
|
|
963 if (u->peer.connection == NULL) {
|
|
964 ngx_http_upstream_finalize_request(r, u,
|
|
965 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
966 }
|
|
967
|
|
968 return;
|
|
969 }
|
|
970
|
|
971 #endif
|
|
972
|
|
973 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
974
|
|
975 err = ngx_socket_errno;
|
|
976
|
286
|
977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
978 "http upstream recv(): %d", n);
|
|
979
|
28
|
980 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
981 return;
|
|
982 }
|
|
983
|
|
984 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
486
|
985
|
|
986 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
987
|
|
988 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
28
|
989 ngx_http_upstream_finalize_request(r, u,
|
|
990 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
991 return;
|
|
992 }
|
|
993 }
|
|
994
|
|
995 if (n > 0) {
|
|
996 return;
|
|
997 }
|
|
998
|
|
999 if (n == -1) {
|
|
1000 if (err == NGX_EAGAIN) {
|
|
1001 return;
|
|
1002 }
|
|
1003
|
|
1004 ev->error = 1;
|
|
1005
|
32
|
1006 } else { /* n == 0 */
|
28
|
1007 err = 0;
|
|
1008 }
|
|
1009
|
78
|
1010 ev->eof = 1;
|
132
|
1011 c->error = 1;
|
78
|
1012
|
482
|
1013 if (!u->cacheable && u->peer.connection) {
|
28
|
1014 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
1015 "client closed prematurely connection, "
|
|
1016 "so upstream connection is closed too");
|
|
1017 ngx_http_upstream_finalize_request(r, u,
|
|
1018 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1019 return;
|
|
1020 }
|
|
1021
|
|
1022 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
1023 "client closed prematurely connection");
|
|
1024
|
|
1025 if (u->peer.connection == NULL) {
|
|
1026 ngx_http_upstream_finalize_request(r, u,
|
|
1027 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1028 }
|
|
1029 }
|
|
1030
|
|
1031
|
36
|
1032 static void
|
|
1033 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1034 {
|
140
|
1035 ngx_int_t rc;
|
214
|
1036 ngx_time_t *tp;
|
140
|
1037 ngx_connection_t *c;
|
28
|
1038
|
32
|
1039 r->connection->log->action = "connecting to upstream";
|
28
|
1040
|
|
1041 r->connection->single_connection = 0;
|
|
1042
|
262
|
1043 if (u->state && u->state->response_sec) {
|
214
|
1044 tp = ngx_timeofday();
|
262
|
1045 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
1046 u->state->response_msec = tp->msec - u->state->response_msec;
|
214
|
1047 }
|
|
1048
|
296
|
1049 u->state = ngx_array_push(r->upstream_states);
|
214
|
1050 if (u->state == NULL) {
|
|
1051 ngx_http_upstream_finalize_request(r, u,
|
|
1052 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1053 return;
|
|
1054 }
|
|
1055
|
|
1056 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
1057
|
|
1058 tp = ngx_timeofday();
|
262
|
1059 u->state->response_sec = tp->sec;
|
|
1060 u->state->response_msec = tp->msec;
|
214
|
1061
|
28
|
1062 rc = ngx_event_connect_peer(&u->peer);
|
|
1063
|
|
1064 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1065 "http upstream connect: %i", rc);
|
|
1066
|
|
1067 if (rc == NGX_ERROR) {
|
|
1068 ngx_http_upstream_finalize_request(r, u,
|
|
1069 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1070 return;
|
|
1071 }
|
|
1072
|
356
|
1073 u->state->peer = u->peer.name;
|
|
1074
|
92
|
1075 if (rc == NGX_BUSY) {
|
|
1076 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
326
|
1077 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
1078 return;
|
92
|
1079 }
|
|
1080
|
326
|
1081 if (rc == NGX_DECLINED) {
|
28
|
1082 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1083 return;
|
|
1084 }
|
|
1085
|
126
|
1086 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
1087
|
28
|
1088 c = u->peer.connection;
|
|
1089
|
|
1090 c->data = r;
|
140
|
1091
|
426
|
1092 c->write->handler = ngx_http_upstream_handler;
|
|
1093 c->read->handler = ngx_http_upstream_handler;
|
|
1094
|
|
1095 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
1096 u->read_event_handler = ngx_http_upstream_process_header;
|
28
|
1097
|
326
|
1098 c->sendfile &= r->connection->sendfile;
|
372
|
1099 u->output.sendfile = c->sendfile;
|
28
|
1100
|
|
1101 c->pool = r->pool;
|
492
|
1102 c->log = r->connection->log;
|
|
1103 c->read->log = c->log;
|
|
1104 c->write->log = c->log;
|
28
|
1105
|
|
1106 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
1107
|
|
1108 u->writer.out = NULL;
|
|
1109 u->writer.last = &u->writer.out;
|
|
1110 u->writer.connection = c;
|
|
1111 u->writer.limit = 0;
|
|
1112
|
|
1113 if (u->request_sent) {
|
58
|
1114 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
1115 ngx_http_upstream_finalize_request(r, u,
|
|
1116 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1117 return;
|
|
1118 }
|
28
|
1119 }
|
|
1120
|
276
|
1121 if (r->request_body
|
|
1122 && r->request_body->buf
|
|
1123 && r->request_body->temp_file
|
|
1124 && r == r->main)
|
|
1125 {
|
122
|
1126 /*
|
|
1127 * the r->request_body->buf can be reused for one request only,
|
|
1128 * the subrequests should allocate their own temporay bufs
|
|
1129 */
|
|
1130
|
|
1131 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
1132 if (u->output.free == NULL) {
|
|
1133 ngx_http_upstream_finalize_request(r, u,
|
|
1134 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1135 return;
|
28
|
1136 }
|
122
|
1137
|
|
1138 u->output.free->buf = r->request_body->buf;
|
|
1139 u->output.free->next = NULL;
|
|
1140 u->output.allocated = 1;
|
|
1141
|
|
1142 r->request_body->buf->pos = r->request_body->buf->start;
|
|
1143 r->request_body->buf->last = r->request_body->buf->start;
|
|
1144 r->request_body->buf->tag = u->output.tag;
|
28
|
1145 }
|
|
1146
|
|
1147 u->request_sent = 0;
|
|
1148
|
|
1149 if (rc == NGX_AGAIN) {
|
|
1150 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
1151 return;
|
|
1152 }
|
|
1153
|
126
|
1154 #if (NGX_HTTP_SSL)
|
|
1155
|
348
|
1156 if (u->ssl && c->ssl == NULL) {
|
140
|
1157 ngx_http_upstream_ssl_init_connection(r, u, c);
|
126
|
1158 return;
|
|
1159 }
|
|
1160
|
|
1161 #endif
|
|
1162
|
28
|
1163 ngx_http_upstream_send_request(r, u);
|
|
1164 }
|
|
1165
|
|
1166
|
126
|
1167 #if (NGX_HTTP_SSL)
|
|
1168
|
|
1169 static void
|
140
|
1170 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
1171 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
1172 {
|
260
|
1173 ngx_int_t rc;
|
140
|
1174
|
|
1175 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
1176 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
454
|
1177 != NGX_OK)
|
140
|
1178 {
|
|
1179 ngx_http_upstream_finalize_request(r, u,
|
|
1180 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1181 return;
|
|
1182 }
|
|
1183
|
|
1184 c->sendfile = 0;
|
168
|
1185 u->output.sendfile = 0;
|
140
|
1186
|
398
|
1187 if (u->conf->ssl_session_reuse) {
|
|
1188 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
1189 ngx_http_upstream_finalize_request(r, u,
|
|
1190 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1191 return;
|
|
1192 }
|
140
|
1193 }
|
|
1194
|
190
|
1195 r->connection->log->action = "SSL handshaking to upstream";
|
|
1196
|
140
|
1197 rc = ngx_ssl_handshake(c);
|
|
1198
|
|
1199 if (rc == NGX_AGAIN) {
|
|
1200 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
1201 return;
|
|
1202 }
|
|
1203
|
|
1204 ngx_http_upstream_ssl_handshake(c);
|
|
1205 }
|
|
1206
|
|
1207
|
|
1208 static void
|
126
|
1209 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
1210 {
|
|
1211 ngx_http_request_t *r;
|
|
1212 ngx_http_upstream_t *u;
|
|
1213
|
|
1214 r = c->data;
|
|
1215 u = r->upstream;
|
|
1216
|
|
1217 if (c->ssl->handshaked) {
|
|
1218
|
398
|
1219 if (u->conf->ssl_session_reuse) {
|
|
1220 u->peer.save_session(&u->peer, u->peer.data);
|
|
1221 }
|
260
|
1222
|
426
|
1223 c->write->handler = ngx_http_upstream_handler;
|
|
1224 c->read->handler = ngx_http_upstream_handler;
|
126
|
1225
|
|
1226 ngx_http_upstream_send_request(r, u);
|
|
1227
|
|
1228 return;
|
|
1229 }
|
|
1230
|
|
1231 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1232
|
|
1233 }
|
|
1234
|
|
1235 #endif
|
|
1236
|
|
1237
|
58
|
1238 static ngx_int_t
|
36
|
1239 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1240 {
|
|
1241 ngx_chain_t *cl;
|
|
1242
|
58
|
1243 if (u->reinit_request(r) != NGX_OK) {
|
|
1244 return NGX_ERROR;
|
|
1245 }
|
|
1246
|
356
|
1247 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
1248
|
|
1249 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
140
|
1250 sizeof(ngx_table_elt_t))
|
|
1251 != NGX_OK)
|
58
|
1252 {
|
|
1253 return NGX_ERROR;
|
28
|
1254 }
|
|
1255
|
|
1256 /* reinit the request chain */
|
126
|
1257
|
58
|
1258 for (cl = u->request_bufs; cl; cl = cl->next) {
|
28
|
1259 cl->buf->pos = cl->buf->start;
|
|
1260 cl->buf->file_pos = 0;
|
|
1261 }
|
|
1262
|
58
|
1263 /* reinit the subrequest's ngx_output_chain() context */
|
|
1264
|
122
|
1265 if (r->request_body && r->request_body->temp_file
|
146
|
1266 && r != r->main && u->output.buf)
|
122
|
1267 {
|
|
1268 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
1269 if (u->output.free == NULL) {
|
|
1270 return NGX_ERROR;
|
58
|
1271 }
|
122
|
1272
|
|
1273 u->output.free->buf = u->output.buf;
|
|
1274 u->output.free->next = NULL;
|
|
1275
|
|
1276 u->output.buf->pos = u->output.buf->start;
|
|
1277 u->output.buf->last = u->output.buf->start;
|
58
|
1278 }
|
28
|
1279
|
|
1280 u->output.buf = NULL;
|
|
1281 u->output.in = NULL;
|
|
1282 u->output.busy = NULL;
|
126
|
1283
|
130
|
1284 /* reinit u->buffer */
|
126
|
1285
|
464
|
1286 u->buffer.pos = u->buffer.start;
|
|
1287
|
|
1288 #if (NGX_HTTP_CACHE)
|
|
1289
|
|
1290 if (r->cache) {
|
|
1291 u->buffer.pos += r->cache->header_start;
|
28
|
1292 }
|
58
|
1293
|
28
|
1294 #endif
|
|
1295
|
464
|
1296 u->buffer.last = u->buffer.pos;
|
|
1297
|
58
|
1298 return NGX_OK;
|
28
|
1299 }
|
|
1300
|
|
1301
|
36
|
1302 static void
|
|
1303 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1304 {
|
294
|
1305 ngx_int_t rc;
|
32
|
1306 ngx_connection_t *c;
|
126
|
1307
|
28
|
1308 c = u->peer.connection;
|
|
1309
|
|
1310 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1311 "http upstream send request");
|
|
1312
|
294
|
1313 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1314 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1315 return;
|
28
|
1316 }
|
|
1317
|
32
|
1318 c->log->action = "sending request to upstream";
|
28
|
1319
|
58
|
1320 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
28
|
1321
|
|
1322 u->request_sent = 1;
|
|
1323
|
|
1324 if (rc == NGX_ERROR) {
|
|
1325 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1326 return;
|
|
1327 }
|
|
1328
|
|
1329 if (c->write->timer_set) {
|
|
1330 ngx_del_timer(c->write);
|
|
1331 }
|
|
1332
|
|
1333 if (rc == NGX_AGAIN) {
|
|
1334 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
1335
|
430
|
1336 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
28
|
1337 ngx_http_upstream_finalize_request(r, u,
|
|
1338 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1339 return;
|
|
1340 }
|
|
1341
|
|
1342 return;
|
|
1343 }
|
|
1344
|
|
1345 /* rc == NGX_OK */
|
|
1346
|
|
1347 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
1348 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
1349 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
1350 ngx_tcp_push_n " failed");
|
|
1351 ngx_http_upstream_finalize_request(r, u,
|
|
1352 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
126
|
1353 return;
|
28
|
1354 }
|
|
1355
|
|
1356 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
1357 }
|
126
|
1358
|
28
|
1359 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
1360
|
|
1361 #if 1
|
|
1362 if (c->read->ready) {
|
126
|
1363
|
28
|
1364 /* post aio operation */
|
|
1365
|
|
1366 /*
|
|
1367 * TODO comment
|
|
1368 * although we can post aio operation just in the end
|
|
1369 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
1370 * it's better to do here because we postpone header buffer allocation
|
|
1371 */
|
|
1372
|
430
|
1373 ngx_http_upstream_process_header(r, u);
|
28
|
1374 return;
|
|
1375 }
|
|
1376 #endif
|
|
1377
|
426
|
1378 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
28
|
1379
|
430
|
1380 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
28
|
1381 ngx_http_upstream_finalize_request(r, u,
|
|
1382 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1383 return;
|
|
1384 }
|
|
1385 }
|
|
1386
|
|
1387
|
36
|
1388 static void
|
430
|
1389 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
1390 ngx_http_upstream_t *u)
|
28
|
1391 {
|
430
|
1392 ngx_connection_t *c;
|
|
1393
|
|
1394 c = u->peer.connection;
|
|
1395
|
|
1396 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
1397 "http upstream send request handler");
|
|
1398
|
430
|
1399 if (c->write->timedout) {
|
28
|
1400 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1401 return;
|
|
1402 }
|
|
1403
|
140
|
1404 #if (NGX_HTTP_SSL)
|
|
1405
|
348
|
1406 if (u->ssl && c->ssl == NULL) {
|
140
|
1407 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
1408 return;
|
|
1409 }
|
|
1410
|
|
1411 #endif
|
|
1412
|
200
|
1413 if (u->header_sent) {
|
426
|
1414 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
200
|
1415
|
430
|
1416 (void) ngx_handle_write_event(c->write, 0);
|
200
|
1417
|
|
1418 return;
|
|
1419 }
|
|
1420
|
28
|
1421 ngx_http_upstream_send_request(r, u);
|
|
1422 }
|
|
1423
|
|
1424
|
36
|
1425 static void
|
430
|
1426 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1427 {
|
464
|
1428 ssize_t n;
|
|
1429 ngx_int_t rc;
|
|
1430 ngx_connection_t *c;
|
28
|
1431
|
430
|
1432 c = u->peer.connection;
|
|
1433
|
|
1434 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
32
|
1435 "http upstream process header");
|
28
|
1436
|
32
|
1437 c->log->action = "reading response header from upstream";
|
28
|
1438
|
430
|
1439 if (c->read->timedout) {
|
28
|
1440 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1441 return;
|
|
1442 }
|
126
|
1443
|
294
|
1444 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1445 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1446 return;
|
|
1447 }
|
|
1448
|
130
|
1449 if (u->buffer.start == NULL) {
|
|
1450 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
1451 if (u->buffer.start == NULL) {
|
28
|
1452 ngx_http_upstream_finalize_request(r, u,
|
|
1453 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1454 return;
|
|
1455 }
|
|
1456
|
130
|
1457 u->buffer.pos = u->buffer.start;
|
|
1458 u->buffer.last = u->buffer.start;
|
|
1459 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
1460 u->buffer.temporary = 1;
|
|
1461
|
|
1462 u->buffer.tag = u->output.tag;
|
28
|
1463
|
356
|
1464 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
130
|
1465 sizeof(ngx_table_elt_t))
|
|
1466 != NGX_OK)
|
58
|
1467 {
|
|
1468 ngx_http_upstream_finalize_request(r, u,
|
|
1469 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1470 return;
|
|
1471 }
|
|
1472
|
464
|
1473 #if (NGX_HTTP_CACHE)
|
|
1474
|
|
1475 if (r->cache) {
|
|
1476 u->buffer.pos += r->cache->header_start;
|
130
|
1477 u->buffer.last = u->buffer.pos;
|
28
|
1478 }
|
|
1479 #endif
|
|
1480 }
|
|
1481
|
424
|
1482 for ( ;; ) {
|
|
1483
|
|
1484 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
1485
|
|
1486 if (n == NGX_AGAIN) {
|
28
|
1487 #if 0
|
424
|
1488 ngx_add_timer(rev, u->read_timeout);
|
28
|
1489 #endif
|
|
1490
|
430
|
1491 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
424
|
1492 ngx_http_upstream_finalize_request(r, u,
|
28
|
1493 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
424
|
1494 return;
|
|
1495 }
|
|
1496
|
|
1497 return;
|
|
1498 }
|
|
1499
|
|
1500 if (n == 0) {
|
430
|
1501 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
424
|
1502 "upstream prematurely closed connection");
|
|
1503 }
|
|
1504
|
|
1505 if (n == NGX_ERROR || n == 0) {
|
|
1506 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
28
|
1507 return;
|
|
1508 }
|
|
1509
|
424
|
1510 u->buffer.last += n;
|
28
|
1511
|
|
1512 #if 0
|
424
|
1513 u->valid_header_in = 0;
|
|
1514
|
|
1515 u->peer.cached = 0;
|
28
|
1516 #endif
|
|
1517
|
424
|
1518 rc = u->process_header(r);
|
|
1519
|
|
1520 if (rc == NGX_AGAIN) {
|
|
1521
|
|
1522 if (u->buffer.pos == u->buffer.end) {
|
430
|
1523 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
424
|
1524 "upstream sent too big header");
|
|
1525
|
|
1526 ngx_http_upstream_next(r, u,
|
|
1527 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1528 return;
|
|
1529 }
|
|
1530
|
|
1531 continue;
|
28
|
1532 }
|
|
1533
|
424
|
1534 break;
|
28
|
1535 }
|
|
1536
|
|
1537 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
1538 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1539 return;
|
|
1540 }
|
|
1541
|
356
|
1542 if (rc == NGX_ERROR) {
|
28
|
1543 ngx_http_upstream_finalize_request(r, u,
|
|
1544 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1545 return;
|
|
1546 }
|
|
1547
|
|
1548 /* rc == NGX_OK */
|
|
1549
|
558
|
1550 if (u->headers_in.status_n > NGX_HTTP_SPECIAL_RESPONSE) {
|
412
|
1551
|
|
1552 if (r->subrequest_in_memory) {
|
|
1553 u->buffer.last = u->buffer.pos;
|
58
|
1554 }
|
|
1555
|
412
|
1556 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
146
|
1557 return;
|
|
1558 }
|
|
1559
|
412
|
1560 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
146
|
1561 return;
|
|
1562 }
|
58
|
1563 }
|
|
1564
|
464
|
1565 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
64
|
1566 return;
|
|
1567 }
|
|
1568
|
248
|
1569 if (!r->subrequest_in_memory) {
|
|
1570 ngx_http_upstream_send_response(r, u);
|
|
1571 return;
|
|
1572 }
|
|
1573
|
|
1574 /* subrequest content in memory */
|
|
1575
|
|
1576 if (u->input_filter == NULL) {
|
|
1577 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1578 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1579 u->input_filter_ctx = r;
|
|
1580 }
|
|
1581
|
|
1582 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1583 ngx_http_upstream_finalize_request(r, u,
|
|
1584 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1585 return;
|
|
1586 }
|
|
1587
|
420
|
1588 n = u->buffer.last - u->buffer.pos;
|
|
1589
|
|
1590 if (n) {
|
|
1591 u->buffer.last -= n;
|
|
1592
|
430
|
1593 u->state->response_length += n;
|
|
1594
|
420
|
1595 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
248
|
1596 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1597 return;
|
|
1598 }
|
|
1599
|
420
|
1600 if (u->length == 0) {
|
|
1601 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1602 return;
|
|
1603 }
|
248
|
1604 }
|
|
1605
|
426
|
1606 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
248
|
1607
|
430
|
1608 ngx_http_upstream_process_body_in_memory(r, u);
|
248
|
1609 }
|
|
1610
|
|
1611
|
294
|
1612 static ngx_int_t
|
412
|
1613 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1614 {
|
|
1615 ngx_uint_t status;
|
|
1616 ngx_http_upstream_next_t *un;
|
|
1617
|
|
1618 status = u->headers_in.status_n;
|
|
1619
|
|
1620 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
1621
|
|
1622 if (status != un->status) {
|
|
1623 continue;
|
|
1624 }
|
|
1625
|
|
1626 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
1627 ngx_http_upstream_next(r, u, un->mask);
|
|
1628 return NGX_OK;
|
|
1629 }
|
|
1630
|
|
1631 #if (NGX_HTTP_CACHE)
|
|
1632
|
502
|
1633 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
1634 && (u->conf->cache_use_stale & un->mask))
|
|
1635 {
|
488
|
1636 ngx_int_t rc;
|
486
|
1637
|
|
1638 rc = u->reinit_request(r);
|
|
1639
|
|
1640 if (rc == NGX_OK) {
|
502
|
1641 u->cache_status = NGX_HTTP_CACHE_STALE;
|
486
|
1642 rc = ngx_http_upstream_cache_send(r, u);
|
|
1643 }
|
|
1644
|
|
1645 ngx_http_upstream_finalize_request(r, u, rc);
|
412
|
1646 return NGX_OK;
|
|
1647 }
|
|
1648
|
|
1649 #endif
|
|
1650 }
|
|
1651
|
|
1652 return NGX_DECLINED;
|
|
1653 }
|
|
1654
|
|
1655
|
|
1656 static ngx_int_t
|
|
1657 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
1658 ngx_http_upstream_t *u)
|
|
1659 {
|
|
1660 ngx_int_t status;
|
|
1661 ngx_uint_t i;
|
|
1662 ngx_table_elt_t *h;
|
|
1663 ngx_http_err_page_t *err_page;
|
|
1664 ngx_http_core_loc_conf_t *clcf;
|
|
1665
|
438
|
1666 status = u->headers_in.status_n;
|
|
1667
|
|
1668 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
1669 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
1670 return NGX_OK;
|
|
1671 }
|
|
1672
|
412
|
1673 if (!u->conf->intercept_errors) {
|
|
1674 return NGX_DECLINED;
|
|
1675 }
|
|
1676
|
|
1677 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1678
|
|
1679 if (clcf->error_pages == NULL) {
|
|
1680 return NGX_DECLINED;
|
|
1681 }
|
|
1682
|
|
1683 err_page = clcf->error_pages->elts;
|
|
1684 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
1685
|
|
1686 if (err_page[i].status == status) {
|
|
1687
|
502
|
1688 if (status == NGX_HTTP_UNAUTHORIZED
|
|
1689 && u->headers_in.www_authenticate)
|
|
1690 {
|
412
|
1691 h = ngx_list_push(&r->headers_out.headers);
|
|
1692
|
|
1693 if (h == NULL) {
|
|
1694 ngx_http_upstream_finalize_request(r, u,
|
|
1695 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1696 return NGX_OK;
|
|
1697 }
|
|
1698
|
|
1699 *h = *u->headers_in.www_authenticate;
|
|
1700
|
|
1701 r->headers_out.www_authenticate = h;
|
|
1702 }
|
|
1703
|
|
1704 ngx_http_upstream_finalize_request(r, u, status);
|
|
1705
|
|
1706 return NGX_OK;
|
|
1707 }
|
|
1708 }
|
|
1709
|
|
1710 return NGX_DECLINED;
|
|
1711 }
|
|
1712
|
|
1713
|
|
1714 static ngx_int_t
|
294
|
1715 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
1716 {
|
|
1717 int err;
|
|
1718 socklen_t len;
|
|
1719
|
|
1720 #if (NGX_HAVE_KQUEUE)
|
|
1721
|
|
1722 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
296
|
1723 if (c->write->pending_eof) {
|
336
|
1724 c->log->action = "connecting to upstream";
|
296
|
1725 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
1726 "kevent() reported that connect() failed");
|
|
1727 return NGX_ERROR;
|
|
1728 }
|
294
|
1729
|
|
1730 } else
|
|
1731 #endif
|
|
1732 {
|
296
|
1733 err = 0;
|
|
1734 len = sizeof(int);
|
|
1735
|
|
1736 /*
|
|
1737 * BSDs and Linux return 0 and set a pending error in err
|
|
1738 * Solaris returns -1 and sets errno
|
|
1739 */
|
|
1740
|
|
1741 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
1742 == -1)
|
|
1743 {
|
|
1744 err = ngx_errno;
|
|
1745 }
|
|
1746
|
|
1747 if (err) {
|
336
|
1748 c->log->action = "connecting to upstream";
|
296
|
1749 (void) ngx_connection_error(c, err, "connect() failed");
|
|
1750 return NGX_ERROR;
|
|
1751 }
|
294
|
1752 }
|
|
1753
|
|
1754 return NGX_OK;
|
|
1755 }
|
|
1756
|
|
1757
|
464
|
1758 static ngx_int_t
|
|
1759 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1760 {
|
|
1761 ngx_str_t *uri, args;
|
|
1762 ngx_uint_t i, flags;
|
|
1763 ngx_list_part_t *part;
|
|
1764 ngx_table_elt_t *h;
|
|
1765 ngx_http_upstream_header_t *hh;
|
|
1766 ngx_http_upstream_main_conf_t *umcf;
|
|
1767
|
|
1768 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1769
|
484
|
1770 if (u->headers_in.x_accel_redirect
|
|
1771 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
1772 {
|
464
|
1773 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1774
|
|
1775 part = &u->headers_in.headers.part;
|
|
1776 h = part->elts;
|
|
1777
|
|
1778 for (i = 0; /* void */; i++) {
|
|
1779
|
|
1780 if (i >= part->nelts) {
|
|
1781 if (part->next == NULL) {
|
|
1782 break;
|
|
1783 }
|
|
1784
|
|
1785 part = part->next;
|
|
1786 h = part->elts;
|
|
1787 i = 0;
|
|
1788 }
|
|
1789
|
|
1790 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1791 h[i].lowcase_key, h[i].key.len);
|
|
1792
|
|
1793 if (hh && hh->redirect) {
|
|
1794 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1795 ngx_http_finalize_request(r,
|
|
1796 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1797 return NGX_DONE;
|
|
1798 }
|
|
1799 }
|
|
1800 }
|
|
1801
|
|
1802 uri = &u->headers_in.x_accel_redirect->value;
|
570
|
1803 ngx_str_null(&args);
|
530
|
1804 flags = NGX_HTTP_LOG_UNSAFE;
|
464
|
1805
|
|
1806 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
1807 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
1808 return NGX_DONE;
|
|
1809 }
|
|
1810
|
|
1811 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
1812 r->zero_in_uri = 1;
|
|
1813 }
|
|
1814
|
|
1815 if (r->method != NGX_HTTP_HEAD) {
|
|
1816 r->method = NGX_HTTP_GET;
|
|
1817 }
|
|
1818
|
|
1819 r->valid_unparsed_uri = 0;
|
|
1820
|
|
1821 ngx_http_internal_redirect(r, uri, &args);
|
526
|
1822 ngx_http_finalize_request(r, NGX_DONE);
|
464
|
1823 return NGX_DONE;
|
|
1824 }
|
|
1825
|
|
1826 part = &u->headers_in.headers.part;
|
|
1827 h = part->elts;
|
|
1828
|
|
1829 for (i = 0; /* void */; i++) {
|
|
1830
|
|
1831 if (i >= part->nelts) {
|
|
1832 if (part->next == NULL) {
|
|
1833 break;
|
|
1834 }
|
|
1835
|
|
1836 part = part->next;
|
|
1837 h = part->elts;
|
|
1838 i = 0;
|
|
1839 }
|
|
1840
|
|
1841 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
1842 h[i].lowcase_key, h[i].key.len))
|
|
1843 {
|
|
1844 continue;
|
|
1845 }
|
|
1846
|
|
1847 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1848 h[i].lowcase_key, h[i].key.len);
|
|
1849
|
|
1850 if (hh) {
|
|
1851 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1852 ngx_http_upstream_finalize_request(r, u,
|
|
1853 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1854 return NGX_DONE;
|
|
1855 }
|
|
1856
|
|
1857 continue;
|
|
1858 }
|
|
1859
|
|
1860 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1861 ngx_http_upstream_finalize_request(r, u,
|
|
1862 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1863 return NGX_DONE;
|
|
1864 }
|
|
1865 }
|
|
1866
|
|
1867 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
1868 r->headers_out.server->hash = 0;
|
|
1869 }
|
|
1870
|
|
1871 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
1872 r->headers_out.date->hash = 0;
|
|
1873 }
|
|
1874
|
|
1875 r->headers_out.status = u->headers_in.status_n;
|
|
1876 r->headers_out.status_line = u->headers_in.status_line;
|
|
1877
|
|
1878 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
1879
|
|
1880 if (r->headers_out.content_length_n != -1) {
|
|
1881 u->length = (size_t) r->headers_out.content_length_n;
|
|
1882
|
|
1883 } else {
|
|
1884 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1885 }
|
|
1886
|
|
1887 return NGX_OK;
|
|
1888 }
|
|
1889
|
|
1890
|
248
|
1891 static void
|
430
|
1892 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
1893 ngx_http_upstream_t *u)
|
248
|
1894 {
|
430
|
1895 size_t size;
|
|
1896 ssize_t n;
|
|
1897 ngx_buf_t *b;
|
|
1898 ngx_event_t *rev;
|
|
1899 ngx_connection_t *c;
|
|
1900
|
|
1901 c = u->peer.connection;
|
|
1902 rev = c->read;
|
248
|
1903
|
|
1904 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1905 "http upstream process body on memory");
|
|
1906
|
|
1907 if (rev->timedout) {
|
|
1908 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
1909 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
1910 return;
|
|
1911 }
|
|
1912
|
|
1913 b = &u->buffer;
|
|
1914
|
|
1915 for ( ;; ) {
|
|
1916
|
|
1917 size = b->end - b->last;
|
|
1918
|
|
1919 if (size == 0) {
|
|
1920 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
1921 "upstream buffer is too small to read repsonse");
|
|
1922 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1923 return;
|
|
1924 }
|
|
1925
|
|
1926 n = c->recv(c, b->last, size);
|
|
1927
|
|
1928 if (n == NGX_AGAIN) {
|
|
1929 break;
|
|
1930 }
|
|
1931
|
|
1932 if (n == 0 || n == NGX_ERROR) {
|
|
1933 ngx_http_upstream_finalize_request(r, u, n);
|
|
1934 return;
|
|
1935 }
|
|
1936
|
430
|
1937 u->state->response_length += n;
|
|
1938
|
248
|
1939 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1940 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1941 return;
|
|
1942 }
|
|
1943
|
|
1944 if (!rev->ready) {
|
|
1945 break;
|
|
1946 }
|
|
1947 }
|
|
1948
|
430
|
1949 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
248
|
1950 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1951 return;
|
|
1952 }
|
|
1953
|
|
1954 if (rev->active) {
|
|
1955 ngx_add_timer(rev, u->conf->read_timeout);
|
|
1956
|
|
1957 } else if (rev->timer_set) {
|
|
1958 ngx_del_timer(rev);
|
|
1959 }
|
230
|
1960 }
|
|
1961
|
|
1962
|
|
1963 static void
|
|
1964 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1965 {
|
|
1966 int tcp_nodelay;
|
430
|
1967 ssize_t n;
|
230
|
1968 ngx_int_t rc;
|
|
1969 ngx_event_pipe_t *p;
|
|
1970 ngx_connection_t *c;
|
|
1971 ngx_http_core_loc_conf_t *clcf;
|
|
1972
|
58
|
1973 rc = ngx_http_send_header(r);
|
28
|
1974
|
480
|
1975 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
34
|
1976 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
1977 return;
|
|
1978 }
|
|
1979
|
480
|
1980 c = r->connection;
|
|
1981
|
|
1982 if (r->header_only) {
|
|
1983
|
|
1984 if (u->cacheable || u->store) {
|
|
1985
|
|
1986 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
1987 ngx_connection_error(c, ngx_socket_errno,
|
|
1988 ngx_shutdown_socket_n " failed");
|
|
1989 }
|
|
1990
|
|
1991 r->read_event_handler = ngx_http_request_empty_handler;
|
|
1992 r->write_event_handler = ngx_http_request_empty_handler;
|
|
1993 c->error = 1;
|
|
1994
|
|
1995 } else {
|
|
1996 ngx_http_upstream_finalize_request(r, u, rc);
|
|
1997 return;
|
|
1998 }
|
|
1999 }
|
|
2000
|
28
|
2001 u->header_sent = 1;
|
|
2002
|
122
|
2003 if (r->request_body && r->request_body->temp_file) {
|
464
|
2004 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
2005 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
112
|
2006 }
|
|
2007
|
130
|
2008 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2009
|
198
|
2010 if (!u->buffering) {
|
130
|
2011
|
|
2012 if (u->input_filter == NULL) {
|
|
2013 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
2014 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
2015 u->input_filter_ctx = r;
|
|
2016 }
|
|
2017
|
428
|
2018 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
130
|
2019 r->write_event_handler =
|
|
2020 ngx_http_upstream_process_non_buffered_downstream;
|
|
2021
|
|
2022 r->limit_rate = 0;
|
|
2023
|
|
2024 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
2025 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2026 return;
|
|
2027 }
|
|
2028
|
132
|
2029 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
2030 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
2031
|
|
2032 tcp_nodelay = 1;
|
|
2033
|
|
2034 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
2035 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
2036 {
|
|
2037 ngx_connection_error(c, ngx_socket_errno,
|
|
2038 "setsockopt(TCP_NODELAY) failed");
|
|
2039 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2040 return;
|
|
2041 }
|
|
2042
|
|
2043 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
2044 }
|
|
2045
|
430
|
2046 n = u->buffer.last - u->buffer.pos;
|
|
2047
|
|
2048 if (n) {
|
130
|
2049 u->buffer.last = u->buffer.pos;
|
|
2050
|
430
|
2051 u->state->response_length += n;
|
|
2052
|
|
2053 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
130
|
2054 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2055 return;
|
|
2056 }
|
|
2057
|
428
|
2058 ngx_http_upstream_process_non_buffered_downstream(r);
|
130
|
2059
|
|
2060 } else {
|
|
2061 u->buffer.pos = u->buffer.start;
|
|
2062 u->buffer.last = u->buffer.start;
|
|
2063
|
|
2064 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
2065 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2066 return;
|
|
2067 }
|
336
|
2068
|
|
2069 if (u->peer.connection->read->ready) {
|
430
|
2070 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
336
|
2071 }
|
130
|
2072 }
|
|
2073
|
|
2074 return;
|
|
2075 }
|
|
2076
|
28
|
2077 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
2078
|
464
|
2079 #if (NGX_HTTP_CACHE)
|
|
2080
|
|
2081 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
2082 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
2083 r->cache->file.fd = NGX_INVALID_FILE;
|
28
|
2084 }
|
|
2085
|
340
|
2086 if (u->cacheable) {
|
464
|
2087 time_t now, valid;
|
|
2088
|
472
|
2089 now = ngx_time();
|
|
2090
|
|
2091 valid = r->cache->valid_sec;
|
|
2092
|
|
2093 if (valid == 0) {
|
|
2094 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
2095 u->headers_in.status_n);
|
|
2096 if (valid) {
|
|
2097 r->cache->valid_sec = now + valid;
|
|
2098 }
|
|
2099 }
|
|
2100
|
464
|
2101 if (valid) {
|
|
2102 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
2103 r->cache->date = now;
|
|
2104 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
2105
|
|
2106 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
2107
|
|
2108 } else {
|
|
2109 u->cacheable = 0;
|
480
|
2110 r->headers_out.last_modified_time = -1;
|
464
|
2111 }
|
28
|
2112 }
|
|
2113
|
478
|
2114 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2115 "http cacheable: %d", u->cacheable);
|
|
2116
|
524
|
2117 if (u->cacheable == 0 && r->cache) {
|
|
2118 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
2119 }
|
|
2120
|
28
|
2121 #endif
|
|
2122
|
130
|
2123 p = u->pipe;
|
28
|
2124
|
|
2125 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
2126 p->output_ctx = r;
|
|
2127 p->tag = u->output.tag;
|
126
|
2128 p->bufs = u->conf->bufs;
|
28
|
2129 p->busy_size = u->conf->busy_buffers_size;
|
|
2130 p->upstream = u->peer.connection;
|
132
|
2131 p->downstream = c;
|
28
|
2132 p->pool = r->pool;
|
132
|
2133 p->log = c->log;
|
126
|
2134
|
340
|
2135 p->cacheable = u->cacheable || u->store;
|
28
|
2136
|
50
|
2137 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2138 if (p->temp_file == NULL) {
|
28
|
2139 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2140 return;
|
|
2141 }
|
|
2142
|
|
2143 p->temp_file->file.fd = NGX_INVALID_FILE;
|
132
|
2144 p->temp_file->file.log = c->log;
|
28
|
2145 p->temp_file->path = u->conf->temp_path;
|
|
2146 p->temp_file->pool = r->pool;
|
126
|
2147
|
464
|
2148 if (p->cacheable) {
|
28
|
2149 p->temp_file->persistent = 1;
|
318
|
2150
|
28
|
2151 } else {
|
216
|
2152 p->temp_file->log_level = NGX_LOG_WARN;
|
28
|
2153 p->temp_file->warn = "an upstream response is buffered "
|
|
2154 "to a temporary file";
|
|
2155 }
|
|
2156
|
|
2157 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
2158 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
2159
|
50
|
2160 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
2161 if (p->preread_bufs == NULL) {
|
28
|
2162 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2163 return;
|
|
2164 }
|
318
|
2165
|
130
|
2166 p->preread_bufs->buf = &u->buffer;
|
28
|
2167 p->preread_bufs->next = NULL;
|
130
|
2168 u->buffer.recycled = 1;
|
|
2169
|
|
2170 p->preread_size = u->buffer.last - u->buffer.pos;
|
28
|
2171
|
340
|
2172 if (u->cacheable) {
|
318
|
2173
|
28
|
2174 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
2175 if (p->buf_to_file == NULL) {
|
|
2176 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2177 return;
|
|
2178 }
|
318
|
2179
|
130
|
2180 p->buf_to_file->pos = u->buffer.start;
|
|
2181 p->buf_to_file->last = u->buffer.pos;
|
28
|
2182 p->buf_to_file->temporary = 1;
|
|
2183 }
|
|
2184
|
|
2185 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
2186 /* the posted aio operation may currupt a shadow buffer */
|
|
2187 p->single_buf = 1;
|
|
2188 }
|
|
2189
|
|
2190 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
2191 p->free_bufs = 1;
|
|
2192
|
|
2193 /*
|
130
|
2194 * event_pipe would do u->buffer.last += p->preread_size
|
28
|
2195 * as though these bytes were read
|
|
2196 */
|
130
|
2197 u->buffer.last = u->buffer.pos;
|
28
|
2198
|
|
2199 if (u->conf->cyclic_temp_file) {
|
|
2200
|
|
2201 /*
|
|
2202 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
2203 * because the writing a new data may interfere with sendfile()
|
|
2204 * that uses the same kernel file pages (at least on FreeBSD)
|
|
2205 */
|
|
2206
|
|
2207 p->cyclic_temp_file = 1;
|
132
|
2208 c->sendfile = 0;
|
28
|
2209
|
|
2210 } else {
|
|
2211 p->cyclic_temp_file = 0;
|
|
2212 }
|
|
2213
|
|
2214 p->read_timeout = u->conf->read_timeout;
|
|
2215 p->send_timeout = clcf->send_timeout;
|
|
2216 p->send_lowat = clcf->send_lowat;
|
|
2217
|
428
|
2218 u->read_event_handler = ngx_http_upstream_process_upstream;
|
58
|
2219 r->write_event_handler = ngx_http_upstream_process_downstream;
|
28
|
2220
|
430
|
2221 ngx_http_upstream_process_upstream(r, u);
|
28
|
2222 }
|
|
2223
|
|
2224
|
36
|
2225 static void
|
130
|
2226 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
2227 {
|
428
|
2228 ngx_event_t *wev;
|
|
2229 ngx_connection_t *c;
|
|
2230 ngx_http_upstream_t *u;
|
|
2231
|
|
2232 c = r->connection;
|
|
2233 u = r->upstream;
|
|
2234 wev = c->write;
|
|
2235
|
|
2236 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2237 "http upstream process non buffered downstream");
|
|
2238
|
|
2239 c->log->action = "sending to client";
|
|
2240
|
|
2241 if (wev->timedout) {
|
|
2242 c->timedout = 1;
|
|
2243 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
2244 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2245 return;
|
|
2246 }
|
|
2247
|
|
2248 ngx_http_upstream_process_non_buffered_request(r, 1);
|
130
|
2249 }
|
|
2250
|
|
2251
|
|
2252 static void
|
430
|
2253 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
2254 ngx_http_upstream_t *u)
|
428
|
2255 {
|
430
|
2256 ngx_connection_t *c;
|
|
2257
|
|
2258 c = u->peer.connection;
|
428
|
2259
|
|
2260 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2261 "http upstream process non buffered upstream");
|
|
2262
|
|
2263 c->log->action = "reading upstream";
|
|
2264
|
430
|
2265 if (c->read->timedout) {
|
428
|
2266 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2267 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2268 return;
|
|
2269 }
|
|
2270
|
|
2271 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
2272 }
|
|
2273
|
|
2274
|
|
2275 static void
|
|
2276 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
2277 ngx_uint_t do_write)
|
130
|
2278 {
|
|
2279 size_t size;
|
|
2280 ssize_t n;
|
|
2281 ngx_buf_t *b;
|
132
|
2282 ngx_int_t rc;
|
428
|
2283 ngx_connection_t *downstream, *upstream;
|
130
|
2284 ngx_http_upstream_t *u;
|
|
2285 ngx_http_core_loc_conf_t *clcf;
|
|
2286
|
244
|
2287 u = r->upstream;
|
260
|
2288 downstream = r->connection;
|
|
2289 upstream = u->peer.connection;
|
130
|
2290
|
|
2291 b = &u->buffer;
|
|
2292
|
428
|
2293 do_write = do_write || u->length == 0;
|
130
|
2294
|
|
2295 for ( ;; ) {
|
|
2296
|
|
2297 if (do_write) {
|
|
2298
|
|
2299 if (u->out_bufs || u->busy_bufs) {
|
132
|
2300 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
2301
|
|
2302 if (rc == NGX_ERROR) {
|
130
|
2303 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2304 return;
|
|
2305 }
|
|
2306
|
|
2307 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
2308 &u->out_bufs, u->output.tag);
|
|
2309 }
|
|
2310
|
|
2311 if (u->busy_bufs == NULL) {
|
|
2312
|
|
2313 if (u->length == 0
|
260
|
2314 || upstream->read->eof
|
|
2315 || upstream->read->error)
|
130
|
2316 {
|
|
2317 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2318 return;
|
|
2319 }
|
|
2320
|
|
2321 b->pos = b->start;
|
|
2322 b->last = b->start;
|
|
2323 }
|
|
2324 }
|
|
2325
|
|
2326 size = b->end - b->last;
|
|
2327
|
|
2328 if (size > u->length) {
|
|
2329 size = u->length;
|
|
2330 }
|
|
2331
|
260
|
2332 if (size && upstream->read->ready) {
|
|
2333
|
|
2334 n = upstream->recv(upstream, b->last, size);
|
130
|
2335
|
|
2336 if (n == NGX_AGAIN) {
|
|
2337 break;
|
|
2338 }
|
|
2339
|
|
2340 if (n > 0) {
|
430
|
2341 u->state->response_length += n;
|
|
2342
|
130
|
2343 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
2344 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2345 return;
|
|
2346 }
|
|
2347 }
|
|
2348
|
|
2349 do_write = 1;
|
|
2350
|
|
2351 continue;
|
|
2352 }
|
|
2353
|
|
2354 break;
|
|
2355 }
|
|
2356
|
428
|
2357 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2358
|
260
|
2359 if (downstream->data == r) {
|
|
2360 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
426
|
2361 != NGX_OK)
|
132
|
2362 {
|
|
2363 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2364 return;
|
|
2365 }
|
130
|
2366 }
|
|
2367
|
276
|
2368 if (downstream->write->active && !downstream->write->ready) {
|
260
|
2369 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
2370
|
|
2371 } else if (downstream->write->timer_set) {
|
|
2372 ngx_del_timer(downstream->write);
|
130
|
2373 }
|
|
2374
|
426
|
2375 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
130
|
2376 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2377 return;
|
|
2378 }
|
|
2379
|
276
|
2380 if (upstream->read->active && !upstream->read->ready) {
|
260
|
2381 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
2382
|
|
2383 } else if (upstream->read->timer_set) {
|
|
2384 ngx_del_timer(upstream->read);
|
130
|
2385 }
|
|
2386 }
|
|
2387
|
|
2388
|
|
2389 static ngx_int_t
|
|
2390 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
2391 {
|
|
2392 return NGX_OK;
|
|
2393 }
|
|
2394
|
|
2395
|
|
2396 static ngx_int_t
|
|
2397 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
2398 {
|
|
2399 ngx_http_request_t *r = data;
|
|
2400
|
|
2401 ngx_buf_t *b;
|
|
2402 ngx_chain_t *cl, **ll;
|
|
2403 ngx_http_upstream_t *u;
|
|
2404
|
|
2405 u = r->upstream;
|
|
2406
|
|
2407 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
2408 ll = &cl->next;
|
|
2409 }
|
|
2410
|
|
2411 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
2412 if (cl == NULL) {
|
|
2413 return NGX_ERROR;
|
|
2414 }
|
|
2415
|
|
2416 *ll = cl;
|
|
2417
|
|
2418 cl->buf->flush = 1;
|
|
2419 cl->buf->memory = 1;
|
|
2420
|
|
2421 b = &u->buffer;
|
|
2422
|
|
2423 cl->buf->pos = b->last;
|
|
2424 b->last += bytes;
|
|
2425 cl->buf->last = b->last;
|
366
|
2426 cl->buf->tag = u->output.tag;
|
130
|
2427
|
|
2428 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
2429 return NGX_OK;
|
|
2430 }
|
|
2431
|
|
2432 u->length -= bytes;
|
|
2433
|
|
2434 return NGX_OK;
|
|
2435 }
|
|
2436
|
|
2437
|
|
2438 static void
|
58
|
2439 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
2440 {
|
428
|
2441 ngx_event_t *wev;
|
|
2442 ngx_connection_t *c;
|
58
|
2443 ngx_event_pipe_t *p;
|
28
|
2444 ngx_http_upstream_t *u;
|
|
2445
|
428
|
2446 c = r->connection;
|
28
|
2447 u = r->upstream;
|
130
|
2448 p = u->pipe;
|
428
|
2449 wev = c->write;
|
|
2450
|
|
2451 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2452 "http upstream process downstream");
|
|
2453
|
|
2454 c->log->action = "sending to client";
|
|
2455
|
|
2456 if (wev->timedout) {
|
|
2457
|
|
2458 if (wev->delayed) {
|
|
2459
|
|
2460 wev->timedout = 0;
|
|
2461 wev->delayed = 0;
|
|
2462
|
|
2463 if (!wev->ready) {
|
|
2464 ngx_add_timer(wev, p->send_timeout);
|
|
2465
|
|
2466 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
2467 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2468 }
|
|
2469
|
|
2470 return;
|
|
2471 }
|
|
2472
|
|
2473 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
2474 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2475 return;
|
76
|
2476 }
|
28
|
2477
|
|
2478 } else {
|
428
|
2479 p->downstream_error = 1;
|
|
2480 c->timedout = 1;
|
|
2481 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
28
|
2482 }
|
|
2483
|
|
2484 } else {
|
428
|
2485
|
|
2486 if (wev->delayed) {
|
|
2487
|
76
|
2488 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2489 "http downstream delayed");
|
|
2490
|
428
|
2491 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
426
|
2492 ngx_http_upstream_finalize_request(r, u, 0);
|
76
|
2493 }
|
|
2494
|
|
2495 return;
|
|
2496 }
|
|
2497
|
428
|
2498 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
28
|
2499 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2500 return;
|
|
2501 }
|
|
2502 }
|
126
|
2503
|
428
|
2504 ngx_http_upstream_process_request(r);
|
|
2505 }
|
|
2506
|
|
2507
|
|
2508 static void
|
430
|
2509 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
2510 ngx_http_upstream_t *u)
|
428
|
2511 {
|
430
|
2512 ngx_connection_t *c;
|
|
2513
|
|
2514 c = u->peer.connection;
|
428
|
2515
|
|
2516 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2517 "http upstream process upstream");
|
|
2518
|
|
2519 c->log->action = "reading upstream";
|
|
2520
|
430
|
2521 if (c->read->timedout) {
|
|
2522 u->pipe->upstream_error = 1;
|
428
|
2523 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2524
|
|
2525 } else {
|
430
|
2526 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
428
|
2527 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2528 return;
|
|
2529 }
|
|
2530 }
|
|
2531
|
|
2532 ngx_http_upstream_process_request(r);
|
|
2533 }
|
|
2534
|
|
2535
|
|
2536 static void
|
|
2537 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
2538 {
|
438
|
2539 ngx_uint_t del;
|
428
|
2540 ngx_temp_file_t *tf;
|
|
2541 ngx_event_pipe_t *p;
|
|
2542 ngx_http_upstream_t *u;
|
|
2543
|
|
2544 u = r->upstream;
|
|
2545 p = u->pipe;
|
|
2546
|
28
|
2547 if (u->peer.connection) {
|
|
2548
|
318
|
2549 if (u->store) {
|
|
2550
|
438
|
2551 del = p->upstream_error;
|
|
2552
|
364
|
2553 tf = u->pipe->temp_file;
|
|
2554
|
440
|
2555 if (p->upstream_eof || p->upstream_done) {
|
438
|
2556
|
|
2557 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
2558 && (u->headers_in.content_length_n == -1
|
|
2559 || (u->headers_in.content_length_n == tf->offset)))
|
|
2560 {
|
|
2561 ngx_http_upstream_store(r, u);
|
|
2562
|
|
2563 } else {
|
|
2564 del = 1;
|
|
2565 }
|
|
2566 }
|
|
2567
|
|
2568 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
2569
|
364
|
2570 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
2571
|
318
|
2572 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
2573 ngx_delete_file_n " \"%s\" failed",
|
|
2574 u->pipe->temp_file->file.name.data);
|
|
2575 }
|
|
2576 }
|
|
2577 }
|
|
2578
|
464
|
2579 #if (NGX_HTTP_CACHE)
|
|
2580
|
|
2581 if (u->cacheable) {
|
|
2582
|
|
2583 if (p->upstream_done) {
|
|
2584 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2585
|
|
2586 } else if (p->upstream_eof) {
|
|
2587
|
|
2588 /* TODO: check length & update cache */
|
|
2589
|
|
2590 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2591
|
|
2592 } else if (p->upstream_error) {
|
|
2593 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
28
|
2594 }
|
|
2595 }
|
|
2596
|
|
2597 #endif
|
|
2598
|
|
2599 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
428
|
2600 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2601 "http upstream exit: %p", p->out);
|
28
|
2602 #if 0
|
|
2603 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2604 #endif
|
|
2605 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2606 return;
|
|
2607 }
|
|
2608 }
|
|
2609
|
|
2610 if (p->downstream_error) {
|
428
|
2611 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2612 "http upstream downstream error");
|
28
|
2613
|
482
|
2614 if (!u->cacheable && !u->store && u->peer.connection) {
|
28
|
2615 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2616 }
|
|
2617 }
|
|
2618 }
|
|
2619
|
|
2620
|
36
|
2621 static void
|
318
|
2622 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
2623 {
|
370
|
2624 size_t root;
|
|
2625 time_t lm;
|
|
2626 ngx_str_t path;
|
|
2627 ngx_temp_file_t *tf;
|
|
2628 ngx_ext_rename_file_t ext;
|
318
|
2629
|
358
|
2630 tf = u->pipe->temp_file;
|
|
2631
|
|
2632 if (tf->file.fd == NGX_INVALID_FILE) {
|
318
|
2633
|
|
2634 /* create file for empty 200 response */
|
|
2635
|
|
2636 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2637 if (tf == NULL) {
|
|
2638 return;
|
|
2639 }
|
|
2640
|
|
2641 tf->file.fd = NGX_INVALID_FILE;
|
|
2642 tf->file.log = r->connection->log;
|
|
2643 tf->path = u->conf->temp_path;
|
|
2644 tf->pool = r->pool;
|
|
2645 tf->persistent = 1;
|
|
2646
|
|
2647 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
2648 tf->persistent, tf->clean, tf->access)
|
|
2649 != NGX_OK)
|
|
2650 {
|
|
2651 return;
|
|
2652 }
|
|
2653
|
|
2654 u->pipe->temp_file = tf;
|
|
2655 }
|
|
2656
|
370
|
2657 ext.access = u->conf->store_access;
|
430
|
2658 ext.path_access = u->conf->store_access;
|
370
|
2659 ext.time = -1;
|
|
2660 ext.create_path = 1;
|
|
2661 ext.delete_file = 1;
|
|
2662 ext.log = r->connection->log;
|
318
|
2663
|
356
|
2664 if (u->headers_in.last_modified) {
|
|
2665
|
370
|
2666 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
2667 u->headers_in.last_modified->value.len);
|
318
|
2668
|
|
2669 if (lm != NGX_ERROR) {
|
370
|
2670 ext.time = lm;
|
|
2671 ext.fd = tf->file.fd;
|
318
|
2672 }
|
|
2673 }
|
|
2674
|
320
|
2675 if (u->conf->store_lengths == NULL) {
|
|
2676
|
|
2677 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
2678
|
|
2679 } else {
|
|
2680 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
2681 u->conf->store_values->elts)
|
|
2682 == NULL)
|
|
2683 {
|
|
2684 return;
|
|
2685 }
|
|
2686 }
|
318
|
2687
|
516
|
2688 path.len--;
|
|
2689
|
318
|
2690 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
370
|
2691 "upstream stores \"%s\" to \"%s\"",
|
|
2692 tf->file.name.data, path.data);
|
|
2693
|
|
2694 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
318
|
2695 }
|
|
2696
|
|
2697
|
|
2698 static void
|
430
|
2699 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
2700 {
|
430
|
2701 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
2702 "http upstream dummy handler");
|
|
2703 }
|
|
2704
|
|
2705
|
36
|
2706 static void
|
|
2707 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
2708 ngx_uint_t ft_type)
|
28
|
2709 {
|
260
|
2710 ngx_uint_t status, state;
|
28
|
2711
|
|
2712 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
260
|
2713 "http next upstream, %xi", ft_type);
|
28
|
2714
|
|
2715 #if 0
|
|
2716 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2717 #endif
|
|
2718
|
74
|
2719 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
260
|
2720 state = NGX_PEER_NEXT;
|
74
|
2721 } else {
|
260
|
2722 state = NGX_PEER_FAILED;
|
28
|
2723 }
|
74
|
2724
|
326
|
2725 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
2726 u->peer.free(&u->peer, u->peer.data, state);
|
|
2727 }
|
74
|
2728
|
28
|
2729 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
2730 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
2731 "upstream timed out");
|
|
2732 }
|
126
|
2733
|
28
|
2734 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
2735 status = 0;
|
|
2736
|
|
2737 } else {
|
|
2738 switch(ft_type) {
|
|
2739
|
|
2740 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
2741 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
2742 break;
|
|
2743
|
|
2744 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
2745 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
2746 break;
|
|
2747
|
|
2748 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
2749 status = NGX_HTTP_NOT_FOUND;
|
|
2750 break;
|
|
2751
|
|
2752 /*
|
|
2753 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
2754 * never reach here
|
|
2755 */
|
|
2756
|
|
2757 default:
|
|
2758 status = NGX_HTTP_BAD_GATEWAY;
|
|
2759 }
|
|
2760 }
|
|
2761
|
132
|
2762 if (r->connection->error) {
|
28
|
2763 ngx_http_upstream_finalize_request(r, u,
|
|
2764 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
2765 return;
|
|
2766 }
|
|
2767
|
|
2768 if (status) {
|
|
2769 u->state->status = status;
|
|
2770
|
74
|
2771 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
28
|
2772
|
|
2773 #if (NGX_HTTP_CACHE)
|
|
2774
|
502
|
2775 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
2776 && (u->conf->cache_use_stale & ft_type))
|
|
2777 {
|
486
|
2778 ngx_int_t rc;
|
|
2779
|
|
2780 rc = u->reinit_request(r);
|
|
2781
|
|
2782 if (rc == NGX_OK) {
|
502
|
2783 u->cache_status = NGX_HTTP_CACHE_STALE;
|
486
|
2784 rc = ngx_http_upstream_cache_send(r, u);
|
|
2785 }
|
|
2786
|
|
2787 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
2788 return;
|
|
2789 }
|
|
2790 #endif
|
|
2791
|
|
2792 ngx_http_upstream_finalize_request(r, u, status);
|
|
2793 return;
|
|
2794 }
|
|
2795 }
|
|
2796
|
|
2797 if (u->peer.connection) {
|
|
2798 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2799 "close http upstream connection: %d",
|
|
2800 u->peer.connection->fd);
|
126
|
2801 #if (NGX_HTTP_SSL)
|
260
|
2802
|
126
|
2803 if (u->peer.connection->ssl) {
|
260
|
2804 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2805 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
2806
|
|
2807 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2808 }
|
|
2809 #endif
|
260
|
2810
|
28
|
2811 ngx_close_connection(u->peer.connection);
|
|
2812 }
|
|
2813
|
|
2814 #if 0
|
|
2815 if (u->conf->busy_lock && !u->busy_locked) {
|
|
2816 ngx_http_upstream_busy_lock(p);
|
|
2817 return;
|
|
2818 }
|
|
2819 #endif
|
|
2820
|
|
2821 ngx_http_upstream_connect(r, u);
|
|
2822 }
|
|
2823
|
|
2824
|
36
|
2825 static void
|
118
|
2826 ngx_http_upstream_cleanup(void *data)
|
|
2827 {
|
|
2828 ngx_http_request_t *r = data;
|
|
2829
|
356
|
2830 ngx_http_upstream_t *u;
|
|
2831
|
118
|
2832 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2833 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
2834
|
356
|
2835 u = r->upstream;
|
|
2836
|
|
2837 if (u->resolved && u->resolved->ctx) {
|
|
2838 ngx_resolve_name_done(u->resolved->ctx);
|
530
|
2839 u->resolved->ctx = NULL;
|
348
|
2840 }
|
|
2841
|
356
|
2842 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
118
|
2843 }
|
|
2844
|
|
2845
|
|
2846 static void
|
36
|
2847 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
2848 ngx_http_upstream_t *u, ngx_int_t rc)
|
28
|
2849 {
|
262
|
2850 ngx_time_t *tp;
|
112
|
2851
|
32
|
2852 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2853 "finalize http upstream request: %i", rc);
|
28
|
2854
|
432
|
2855 if (u->cleanup) {
|
|
2856 *u->cleanup = NULL;
|
562
|
2857 u->cleanup = NULL;
|
432
|
2858 }
|
118
|
2859
|
530
|
2860 if (u->resolved && u->resolved->ctx) {
|
|
2861 ngx_resolve_name_done(u->resolved->ctx);
|
|
2862 u->resolved->ctx = NULL;
|
|
2863 }
|
|
2864
|
348
|
2865 if (u->state && u->state->response_sec) {
|
112
|
2866 tp = ngx_timeofday();
|
262
|
2867 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
2868 u->state->response_msec = tp->msec - u->state->response_msec;
|
430
|
2869
|
|
2870 if (u->pipe) {
|
|
2871 u->state->response_length = u->pipe->read_length;
|
|
2872 }
|
112
|
2873 }
|
|
2874
|
28
|
2875 u->finalize_request(r, rc);
|
|
2876
|
348
|
2877 if (u->peer.free) {
|
|
2878 u->peer.free(&u->peer, u->peer.data, 0);
|
|
2879 }
|
260
|
2880
|
28
|
2881 if (u->peer.connection) {
|
260
|
2882
|
126
|
2883 #if (NGX_HTTP_SSL)
|
|
2884
|
|
2885 /* TODO: do not shutdown persistent connection */
|
|
2886
|
|
2887 if (u->peer.connection->ssl) {
|
260
|
2888
|
|
2889 /*
|
|
2890 * We send the "close notify" shutdown alert to the upstream only
|
|
2891 * and do not wait its "close notify" shutdown alert.
|
|
2892 * It is acceptable according to the TLS standard.
|
|
2893 */
|
|
2894
|
|
2895 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2896
|
|
2897 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2898 }
|
|
2899 #endif
|
260
|
2900
|
|
2901 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2902 "close http upstream connection: %d",
|
|
2903 u->peer.connection->fd);
|
|
2904
|
28
|
2905 ngx_close_connection(u->peer.connection);
|
|
2906 }
|
|
2907
|
32
|
2908 u->peer.connection = NULL;
|
|
2909
|
130
|
2910 if (u->pipe && u->pipe->temp_file) {
|
28
|
2911 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2912 "http upstream temp fd: %d",
|
130
|
2913 u->pipe->temp_file->file.fd);
|
28
|
2914 }
|
|
2915
|
464
|
2916 #if (NGX_HTTP_CACHE)
|
|
2917
|
512
|
2918 if (u->cacheable && r->cache) {
|
464
|
2919 time_t valid;
|
|
2920
|
28
|
2921 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2922 "http upstream cache fd: %d",
|
464
|
2923 r->cache->file.fd);
|
|
2924
|
|
2925 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
2926
|
|
2927 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
2928
|
|
2929 if (valid) {
|
|
2930 r->cache->valid_sec = ngx_time() + valid;
|
|
2931 r->cache->error = rc;
|
|
2932 }
|
|
2933 }
|
|
2934
|
|
2935 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
28
|
2936 }
|
464
|
2937
|
28
|
2938 #endif
|
|
2939
|
478
|
2940 if (u->header_sent
|
|
2941 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
464
|
2942 {
|
|
2943 rc = 0;
|
|
2944 }
|
|
2945
|
64
|
2946 if (rc == NGX_DECLINED) {
|
|
2947 return;
|
|
2948 }
|
|
2949
|
32
|
2950 r->connection->log->action = "sending to client";
|
|
2951
|
506
|
2952 if (rc == 0) {
|
426
|
2953 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
28
|
2954 }
|
|
2955
|
|
2956 ngx_http_finalize_request(r, rc);
|
|
2957 }
|
|
2958
|
|
2959
|
58
|
2960 static ngx_int_t
|
|
2961 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2962 ngx_uint_t offset)
|
126
|
2963 {
|
58
|
2964 ngx_table_elt_t **ph;
|
126
|
2965
|
58
|
2966 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
2967
|
|
2968 if (*ph == NULL) {
|
|
2969 *ph = h;
|
|
2970 }
|
|
2971
|
|
2972 return NGX_OK;
|
|
2973 }
|
|
2974
|
|
2975
|
|
2976 static ngx_int_t
|
472
|
2977 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
2978 ngx_uint_t offset)
|
|
2979 {
|
|
2980 return NGX_OK;
|
|
2981 }
|
|
2982
|
|
2983
|
|
2984 static ngx_int_t
|
|
2985 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
58
|
2986 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
2987 {
|
484
|
2988 ngx_array_t *pa;
|
|
2989 ngx_table_elt_t **ph;
|
|
2990 ngx_http_upstream_t *u;
|
|
2991
|
|
2992 u = r->upstream;
|
|
2993 pa = &u->headers_in.cache_control;
|
58
|
2994
|
|
2995 if (pa->elts == NULL) {
|
|
2996 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
2997 {
|
|
2998 return NGX_ERROR;
|
|
2999 }
|
|
3000 }
|
|
3001
|
|
3002 ph = ngx_array_push(pa);
|
|
3003 if (ph == NULL) {
|
|
3004 return NGX_ERROR;
|
|
3005 }
|
|
3006
|
|
3007 *ph = h;
|
|
3008
|
480
|
3009 #if (NGX_HTTP_CACHE)
|
|
3010 {
|
|
3011 u_char *p, *last;
|
|
3012 ngx_int_t n;
|
|
3013
|
484
|
3014 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
3015 return NGX_OK;
|
|
3016 }
|
|
3017
|
472
|
3018 if (r->cache == NULL) {
|
|
3019 return NGX_OK;
|
|
3020 }
|
|
3021
|
|
3022 if (r->cache->valid_sec != 0) {
|
|
3023 return NGX_OK;
|
|
3024 }
|
|
3025
|
570
|
3026 p = h->value.data;
|
|
3027 last = p + h->value.len;
|
|
3028
|
|
3029 if (ngx_strlcasestrn(p, last, (u_char *) "no-cache", 8 - 1) != NULL
|
|
3030 || ngx_strlcasestrn(p, last, (u_char *) "no-store", 8 - 1) != NULL
|
|
3031 || ngx_strlcasestrn(p, last, (u_char *) "private", 7 - 1) != NULL)
|
472
|
3032 {
|
484
|
3033 u->cacheable = 0;
|
472
|
3034 return NGX_OK;
|
|
3035 }
|
|
3036
|
570
|
3037 p = ngx_strlcasestrn(p, last, (u_char *) "max-age=", 8 - 1);
|
472
|
3038
|
|
3039 if (p == NULL) {
|
|
3040 return NGX_OK;
|
|
3041 }
|
|
3042
|
|
3043 n = 0;
|
|
3044
|
|
3045 for (p += 8; p < last; p++) {
|
536
|
3046 if (*p == ',' || *p == ';' || *p == ' ') {
|
472
|
3047 break;
|
|
3048 }
|
|
3049
|
|
3050 if (*p >= '0' && *p <= '9') {
|
|
3051 n = n * 10 + *p - '0';
|
|
3052 continue;
|
|
3053 }
|
|
3054
|
484
|
3055 u->cacheable = 0;
|
472
|
3056 return NGX_OK;
|
|
3057 }
|
|
3058
|
|
3059 if (n == 0) {
|
484
|
3060 u->cacheable = 0;
|
472
|
3061 return NGX_OK;
|
|
3062 }
|
|
3063
|
|
3064 r->cache->valid_sec = ngx_time() + n;
|
480
|
3065 }
|
|
3066 #endif
|
|
3067
|
58
|
3068 return NGX_OK;
|
|
3069 }
|
|
3070
|
|
3071
|
|
3072 static ngx_int_t
|
472
|
3073 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
58
|
3074 ngx_uint_t offset)
|
|
3075 {
|
484
|
3076 ngx_http_upstream_t *u;
|
|
3077
|
|
3078 u = r->upstream;
|
|
3079 u->headers_in.expires = h;
|
480
|
3080
|
|
3081 #if (NGX_HTTP_CACHE)
|
|
3082 {
|
472
|
3083 time_t expires;
|
|
3084
|
484
|
3085 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
3086 return NGX_OK;
|
|
3087 }
|
|
3088
|
472
|
3089 if (r->cache == NULL) {
|
|
3090 return NGX_OK;
|
|
3091 }
|
|
3092
|
|
3093 if (r->cache->valid_sec != 0) {
|
|
3094 return NGX_OK;
|
|
3095 }
|
|
3096
|
|
3097 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
3098
|
|
3099 if (expires == NGX_ERROR || expires < ngx_time()) {
|
484
|
3100 u->cacheable = 0;
|
472
|
3101 return NGX_OK;
|
|
3102 }
|
|
3103
|
|
3104 r->cache->valid_sec = expires;
|
480
|
3105 }
|
|
3106 #endif
|
472
|
3107
|
|
3108 return NGX_OK;
|
|
3109 }
|
|
3110
|
|
3111
|
|
3112 static ngx_int_t
|
|
3113 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
3114 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3115 {
|
484
|
3116 ngx_http_upstream_t *u;
|
|
3117
|
|
3118 u = r->upstream;
|
|
3119 u->headers_in.x_accel_expires = h;
|
480
|
3120
|
|
3121 #if (NGX_HTTP_CACHE)
|
|
3122 {
|
472
|
3123 u_char *p;
|
|
3124 size_t len;
|
|
3125 ngx_int_t n;
|
|
3126
|
484
|
3127 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
3128 return NGX_OK;
|
|
3129 }
|
|
3130
|
472
|
3131 if (r->cache == NULL) {
|
|
3132 return NGX_OK;
|
|
3133 }
|
|
3134
|
|
3135 len = h->value.len;
|
|
3136 p = h->value.data;
|
|
3137
|
|
3138 if (p[0] != '@') {
|
|
3139 n = ngx_atoi(p, len);
|
|
3140
|
|
3141 switch (n) {
|
|
3142 case 0:
|
484
|
3143 u->cacheable = 0;
|
472
|
3144 case NGX_ERROR:
|
|
3145 return NGX_OK;
|
|
3146
|
|
3147 default:
|
|
3148 r->cache->valid_sec = ngx_time() + n;
|
|
3149 return NGX_OK;
|
|
3150 }
|
|
3151 }
|
|
3152
|
|
3153 p++;
|
|
3154 len--;
|
|
3155
|
|
3156 n = ngx_atoi(p, len);
|
|
3157
|
|
3158 if (n != NGX_ERROR) {
|
|
3159 r->cache->valid_sec = n;
|
|
3160 }
|
480
|
3161 }
|
|
3162 #endif
|
472
|
3163
|
58
|
3164 return NGX_OK;
|
|
3165 }
|
|
3166
|
|
3167
|
|
3168 static ngx_int_t
|
76
|
3169 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3170 ngx_uint_t offset)
|
126
|
3171 {
|
76
|
3172 ngx_int_t n;
|
|
3173
|
|
3174 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
3175
|
|
3176 n = ngx_atoi(h->value.data, h->value.len);
|
|
3177
|
|
3178 if (n != NGX_ERROR) {
|
|
3179 r->limit_rate = (size_t) n;
|
|
3180 }
|
|
3181
|
|
3182 return NGX_OK;
|
|
3183 }
|
|
3184
|
|
3185
|
|
3186 static ngx_int_t
|
198
|
3187 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3188 ngx_uint_t offset)
|
|
3189 {
|
|
3190 u_char c0, c1, c2;
|
|
3191
|
|
3192 if (r->upstream->conf->change_buffering) {
|
|
3193
|
|
3194 if (h->value.len == 2) {
|
|
3195 c0 = ngx_tolower(h->value.data[0]);
|
|
3196 c1 = ngx_tolower(h->value.data[1]);
|
|
3197
|
|
3198 if (c0 == 'n' && c1 == 'o') {
|
|
3199 r->upstream->buffering = 0;
|
|
3200 }
|
|
3201
|
|
3202 } else if (h->value.len == 3) {
|
|
3203 c0 = ngx_tolower(h->value.data[0]);
|
|
3204 c1 = ngx_tolower(h->value.data[1]);
|
|
3205 c2 = ngx_tolower(h->value.data[2]);
|
|
3206
|
|
3207 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
3208 r->upstream->buffering = 1;
|
|
3209 }
|
|
3210 }
|
|
3211 }
|
|
3212
|
|
3213 return NGX_OK;
|
|
3214 }
|
|
3215
|
|
3216
|
|
3217 static ngx_int_t
|
206
|
3218 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3219 ngx_uint_t offset)
|
|
3220 {
|
|
3221 r->headers_out.override_charset = &h->value;
|
|
3222
|
|
3223 return NGX_OK;
|
|
3224 }
|
|
3225
|
|
3226
|
|
3227 static ngx_int_t
|
58
|
3228 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3229 ngx_uint_t offset)
|
|
3230 {
|
122
|
3231 ngx_table_elt_t *ho, **ph;
|
58
|
3232
|
|
3233 ho = ngx_list_push(&r->headers_out.headers);
|
|
3234 if (ho == NULL) {
|
|
3235 return NGX_ERROR;
|
|
3236 }
|
|
3237
|
|
3238 *ho = *h;
|
|
3239
|
122
|
3240 if (offset) {
|
|
3241 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
3242 *ph = ho;
|
|
3243 }
|
|
3244
|
58
|
3245 return NGX_OK;
|
|
3246 }
|
|
3247
|
|
3248
|
|
3249 static ngx_int_t
|
|
3250 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
3251 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3252 {
|
|
3253 ngx_array_t *pa;
|
|
3254 ngx_table_elt_t *ho, **ph;
|
|
3255
|
|
3256 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
3257
|
|
3258 if (pa->elts == NULL) {
|
|
3259 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
3260 {
|
|
3261 return NGX_ERROR;
|
|
3262 }
|
|
3263 }
|
|
3264
|
|
3265 ph = ngx_array_push(pa);
|
|
3266 if (ph == NULL) {
|
|
3267 return NGX_ERROR;
|
|
3268 }
|
|
3269
|
|
3270 ho = ngx_list_push(&r->headers_out.headers);
|
|
3271 if (ho == NULL) {
|
|
3272 return NGX_ERROR;
|
|
3273 }
|
|
3274
|
|
3275 *ho = *h;
|
|
3276 *ph = ho;
|
|
3277
|
|
3278 return NGX_OK;
|
|
3279 }
|
|
3280
|
|
3281
|
|
3282 static ngx_int_t
|
|
3283 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3284 ngx_uint_t offset)
|
|
3285 {
|
206
|
3286 u_char *p, *last;
|
|
3287
|
|
3288 r->headers_out.content_type_len = h->value.len;
|
58
|
3289 r->headers_out.content_type = h->value;
|
494
|
3290 r->headers_out.content_type_lowcase = NULL;
|
58
|
3291
|
206
|
3292 for (p = h->value.data; *p; p++) {
|
|
3293
|
|
3294 if (*p != ';') {
|
|
3295 continue;
|
|
3296 }
|
|
3297
|
|
3298 last = p;
|
|
3299
|
|
3300 while (*++p == ' ') { /* void */ }
|
|
3301
|
372
|
3302 if (*p == '\0') {
|
|
3303 return NGX_OK;
|
|
3304 }
|
|
3305
|
286
|
3306 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
206
|
3307 continue;
|
|
3308 }
|
|
3309
|
|
3310 p += 8;
|
|
3311
|
|
3312 r->headers_out.content_type_len = last - h->value.data;
|
|
3313
|
410
|
3314 if (*p == '"') {
|
|
3315 p++;
|
|
3316 }
|
|
3317
|
|
3318 last = h->value.data + h->value.len;
|
|
3319
|
|
3320 if (*(last - 1) == '"') {
|
|
3321 last--;
|
|
3322 }
|
|
3323
|
|
3324 r->headers_out.charset.len = last - p;
|
206
|
3325 r->headers_out.charset.data = p;
|
292
|
3326
|
|
3327 return NGX_OK;
|
206
|
3328 }
|
|
3329
|
58
|
3330 return NGX_OK;
|
|
3331 }
|
|
3332
|
|
3333
|
|
3334 static ngx_int_t
|
|
3335 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3336 ngx_uint_t offset)
|
|
3337 {
|
|
3338 ngx_table_elt_t *ho;
|
|
3339
|
|
3340 ho = ngx_list_push(&r->headers_out.headers);
|
|
3341 if (ho == NULL) {
|
|
3342 return NGX_ERROR;
|
|
3343 }
|
|
3344
|
|
3345 *ho = *h;
|
|
3346
|
|
3347 r->headers_out.content_length = ho;
|
|
3348 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
3349
|
|
3350 return NGX_OK;
|
|
3351 }
|
|
3352
|
|
3353
|
|
3354 static ngx_int_t
|
464
|
3355 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3356 ngx_uint_t offset)
|
|
3357 {
|
|
3358 ngx_table_elt_t *ho;
|
|
3359
|
|
3360 ho = ngx_list_push(&r->headers_out.headers);
|
|
3361 if (ho == NULL) {
|
|
3362 return NGX_ERROR;
|
|
3363 }
|
|
3364
|
|
3365 *ho = *h;
|
|
3366
|
510
|
3367 r->headers_out.last_modified = ho;
|
|
3368
|
464
|
3369 #if (NGX_HTTP_CACHE)
|
|
3370
|
502
|
3371 if (r->upstream->cacheable) {
|
464
|
3372 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
3373 h->value.len);
|
|
3374 }
|
|
3375
|
|
3376 #endif
|
|
3377
|
|
3378 return NGX_OK;
|
|
3379 }
|
|
3380
|
|
3381
|
|
3382 static ngx_int_t
|
58
|
3383 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3384 ngx_uint_t offset)
|
|
3385 {
|
|
3386 ngx_int_t rc;
|
|
3387 ngx_table_elt_t *ho;
|
|
3388
|
|
3389 ho = ngx_list_push(&r->headers_out.headers);
|
|
3390 if (ho == NULL) {
|
|
3391 return NGX_ERROR;
|
|
3392 }
|
|
3393
|
|
3394 *ho = *h;
|
|
3395
|
|
3396 if (r->upstream->rewrite_redirect) {
|
|
3397 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
3398
|
78
|
3399 if (rc == NGX_DECLINED) {
|
|
3400 return NGX_OK;
|
|
3401 }
|
|
3402
|
58
|
3403 if (rc == NGX_OK) {
|
|
3404 r->headers_out.location = ho;
|
|
3405
|
|
3406 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3407 "rewritten location: \"%V\"", &ho->value);
|
|
3408 }
|
|
3409
|
|
3410 return rc;
|
|
3411 }
|
|
3412
|
348
|
3413 if (ho->value.data[0] != '/') {
|
|
3414 r->headers_out.location = ho;
|
|
3415 }
|
|
3416
|
58
|
3417 /*
|
|
3418 * we do not set r->headers_out.location here to avoid the handling
|
|
3419 * the local redirects without a host name by ngx_http_header_filter()
|
|
3420 */
|
|
3421
|
|
3422 return NGX_OK;
|
|
3423 }
|
|
3424
|
|
3425
|
|
3426 static ngx_int_t
|
|
3427 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3428 ngx_uint_t offset)
|
|
3429 {
|
|
3430 u_char *p;
|
|
3431 ngx_int_t rc;
|
|
3432 ngx_table_elt_t *ho;
|
|
3433
|
|
3434 ho = ngx_list_push(&r->headers_out.headers);
|
|
3435 if (ho == NULL) {
|
|
3436 return NGX_ERROR;
|
|
3437 }
|
|
3438
|
|
3439 *ho = *h;
|
|
3440
|
|
3441 if (r->upstream->rewrite_redirect) {
|
|
3442
|
340
|
3443 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
58
|
3444
|
|
3445 if (p) {
|
|
3446 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
3447
|
|
3448 } else {
|
|
3449 return NGX_OK;
|
|
3450 }
|
|
3451
|
78
|
3452 if (rc == NGX_DECLINED) {
|
|
3453 return NGX_OK;
|
|
3454 }
|
|
3455
|
58
|
3456 if (rc == NGX_OK) {
|
348
|
3457 r->headers_out.refresh = ho;
|
|
3458
|
58
|
3459 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3460 "rewritten refresh: \"%V\"", &ho->value);
|
|
3461 }
|
|
3462
|
|
3463 return rc;
|
|
3464 }
|
|
3465
|
348
|
3466 r->headers_out.refresh = ho;
|
|
3467
|
58
|
3468 return NGX_OK;
|
|
3469 }
|
|
3470
|
|
3471
|
464
|
3472 static ngx_int_t
|
|
3473 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
3474 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3475 {
|
|
3476 ngx_table_elt_t *ho;
|
|
3477
|
|
3478 #if (NGX_HTTP_CACHE)
|
|
3479
|
|
3480 if (r->cached) {
|
|
3481 r->allow_ranges = 1;
|
|
3482 return NGX_OK;
|
|
3483
|
|
3484 }
|
|
3485
|
|
3486 #endif
|
|
3487
|
|
3488 ho = ngx_list_push(&r->headers_out.headers);
|
|
3489 if (ho == NULL) {
|
|
3490 return NGX_ERROR;
|
|
3491 }
|
|
3492
|
|
3493 *ho = *h;
|
|
3494
|
510
|
3495 r->headers_out.accept_ranges = ho;
|
|
3496
|
464
|
3497 return NGX_OK;
|
|
3498 }
|
|
3499
|
|
3500
|
58
|
3501 #if (NGX_HTTP_GZIP)
|
|
3502
|
|
3503 static ngx_int_t
|
|
3504 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
3505 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3506 {
|
|
3507 ngx_table_elt_t *ho;
|
|
3508
|
|
3509 ho = ngx_list_push(&r->headers_out.headers);
|
|
3510 if (ho == NULL) {
|
|
3511 return NGX_ERROR;
|
|
3512 }
|
|
3513
|
|
3514 *ho = *h;
|
|
3515
|
|
3516 r->headers_out.content_encoding = ho;
|
|
3517
|
|
3518 return NGX_OK;
|
|
3519 }
|
|
3520
|
|
3521 #endif
|
|
3522
|
|
3523
|
36
|
3524 static ngx_int_t
|
122
|
3525 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
28
|
3526 {
|
260
|
3527 ngx_http_variable_t *var, *v;
|
28
|
3528
|
122
|
3529 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
3530 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
3531 if (var == NULL) {
|
|
3532 return NGX_ERROR;
|
|
3533 }
|
|
3534
|
186
|
3535 var->get_handler = v->get_handler;
|
122
|
3536 var->data = v->data;
|
|
3537 }
|
|
3538
|
28
|
3539 return NGX_OK;
|
|
3540 }
|
58
|
3541
|
|
3542
|
122
|
3543 static ngx_int_t
|
298
|
3544 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
3545 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3546 {
|
|
3547 u_char *p;
|
|
3548 size_t len;
|
|
3549 ngx_uint_t i;
|
|
3550 ngx_http_upstream_state_t *state;
|
|
3551
|
|
3552 v->valid = 1;
|
340
|
3553 v->no_cacheable = 0;
|
298
|
3554 v->not_found = 0;
|
|
3555
|
|
3556 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3557 v->not_found = 1;
|
|
3558 return NGX_OK;
|
|
3559 }
|
|
3560
|
|
3561 len = 0;
|
|
3562 state = r->upstream_states->elts;
|
|
3563
|
|
3564 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
3565 if (state[i].peer) {
|
|
3566 len += state[i].peer->len + 2;
|
|
3567
|
|
3568 } else {
|
|
3569 len += 3;
|
|
3570 }
|
|
3571 }
|
|
3572
|
382
|
3573 p = ngx_pnalloc(r->pool, len);
|
298
|
3574 if (p == NULL) {
|
|
3575 return NGX_ERROR;
|
|
3576 }
|
|
3577
|
|
3578 v->data = p;
|
|
3579
|
|
3580 i = 0;
|
|
3581
|
|
3582 for ( ;; ) {
|
|
3583 if (state[i].peer) {
|
|
3584 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
3585 }
|
|
3586
|
|
3587 if (++i == r->upstream_states->nelts) {
|
|
3588 break;
|
|
3589 }
|
|
3590
|
|
3591 if (state[i].peer) {
|
|
3592 *p++ = ',';
|
|
3593 *p++ = ' ';
|
|
3594
|
|
3595 } else {
|
|
3596 *p++ = ' ';
|
|
3597 *p++ = ':';
|
|
3598 *p++ = ' ';
|
|
3599
|
|
3600 if (++i == r->upstream_states->nelts) {
|
|
3601 break;
|
|
3602 }
|
|
3603
|
|
3604 continue;
|
|
3605 }
|
|
3606 }
|
|
3607
|
|
3608 v->len = p - v->data;
|
|
3609
|
|
3610 return NGX_OK;
|
|
3611 }
|
|
3612
|
|
3613
|
|
3614 static ngx_int_t
|
122
|
3615 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
3616 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3617 {
|
|
3618 u_char *p;
|
|
3619 size_t len;
|
|
3620 ngx_uint_t i;
|
|
3621 ngx_http_upstream_state_t *state;
|
|
3622
|
|
3623 v->valid = 1;
|
340
|
3624 v->no_cacheable = 0;
|
122
|
3625 v->not_found = 0;
|
|
3626
|
296
|
3627 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3628 v->not_found = 1;
|
|
3629 return NGX_OK;
|
|
3630 }
|
|
3631
|
296
|
3632 len = r->upstream_states->nelts * (3 + 2);
|
122
|
3633
|
382
|
3634 p = ngx_pnalloc(r->pool, len);
|
122
|
3635 if (p == NULL) {
|
|
3636 return NGX_ERROR;
|
|
3637 }
|
|
3638
|
|
3639 v->data = p;
|
|
3640
|
|
3641 i = 0;
|
296
|
3642 state = r->upstream_states->elts;
|
122
|
3643
|
|
3644 for ( ;; ) {
|
296
|
3645 if (state[i].status) {
|
|
3646 p = ngx_sprintf(p, "%ui", state[i].status);
|
122
|
3647
|
|
3648 } else {
|
296
|
3649 *p++ = '-';
|
122
|
3650 }
|
|
3651
|
296
|
3652 if (++i == r->upstream_states->nelts) {
|
122
|
3653 break;
|
|
3654 }
|
|
3655
|
296
|
3656 if (state[i].peer) {
|
|
3657 *p++ = ',';
|
|
3658 *p++ = ' ';
|
|
3659
|
|
3660 } else {
|
|
3661 *p++ = ' ';
|
|
3662 *p++ = ':';
|
|
3663 *p++ = ' ';
|
|
3664
|
|
3665 if (++i == r->upstream_states->nelts) {
|
|
3666 break;
|
|
3667 }
|
|
3668
|
|
3669 continue;
|
|
3670 }
|
122
|
3671 }
|
|
3672
|
|
3673 v->len = p - v->data;
|
|
3674
|
|
3675 return NGX_OK;
|
|
3676 }
|
|
3677
|
|
3678
|
|
3679 static ngx_int_t
|
|
3680 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
3681 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3682 {
|
|
3683 u_char *p;
|
|
3684 size_t len;
|
|
3685 ngx_uint_t i;
|
262
|
3686 ngx_msec_int_t ms;
|
122
|
3687 ngx_http_upstream_state_t *state;
|
|
3688
|
|
3689 v->valid = 1;
|
340
|
3690 v->no_cacheable = 0;
|
122
|
3691 v->not_found = 0;
|
|
3692
|
296
|
3693 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3694 v->not_found = 1;
|
|
3695 return NGX_OK;
|
|
3696 }
|
|
3697
|
296
|
3698 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
122
|
3699
|
382
|
3700 p = ngx_pnalloc(r->pool, len);
|
122
|
3701 if (p == NULL) {
|
|
3702 return NGX_ERROR;
|
|
3703 }
|
|
3704
|
|
3705 v->data = p;
|
|
3706
|
|
3707 i = 0;
|
296
|
3708 state = r->upstream_states->elts;
|
122
|
3709
|
|
3710 for ( ;; ) {
|
296
|
3711 if (state[i].status) {
|
346
|
3712 ms = (ngx_msec_int_t)
|
|
3713 (state[i].response_sec * 1000 + state[i].response_msec);
|
570
|
3714 ms = ngx_max(ms, 0);
|
262
|
3715 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
296
|
3716
|
|
3717 } else {
|
|
3718 *p++ = '-';
|
122
|
3719 }
|
|
3720
|
296
|
3721 if (++i == r->upstream_states->nelts) {
|
122
|
3722 break;
|
|
3723 }
|
|
3724
|
296
|
3725 if (state[i].peer) {
|
|
3726 *p++ = ',';
|
|
3727 *p++ = ' ';
|
|
3728
|
|
3729 } else {
|
|
3730 *p++ = ' ';
|
|
3731 *p++ = ':';
|
|
3732 *p++ = ' ';
|
|
3733
|
|
3734 if (++i == r->upstream_states->nelts) {
|
|
3735 break;
|
|
3736 }
|
|
3737
|
|
3738 continue;
|
|
3739 }
|
122
|
3740 }
|
|
3741
|
|
3742 v->len = p - v->data;
|
|
3743
|
|
3744 return NGX_OK;
|
|
3745 }
|
|
3746
|
|
3747
|
430
|
3748 static ngx_int_t
|
|
3749 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
3750 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3751 {
|
|
3752 u_char *p;
|
|
3753 size_t len;
|
|
3754 ngx_uint_t i;
|
|
3755 ngx_http_upstream_state_t *state;
|
|
3756
|
|
3757 v->valid = 1;
|
|
3758 v->no_cacheable = 0;
|
|
3759 v->not_found = 0;
|
|
3760
|
|
3761 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3762 v->not_found = 1;
|
|
3763 return NGX_OK;
|
|
3764 }
|
|
3765
|
|
3766 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
3767
|
|
3768 p = ngx_pnalloc(r->pool, len);
|
|
3769 if (p == NULL) {
|
|
3770 return NGX_ERROR;
|
|
3771 }
|
|
3772
|
|
3773 v->data = p;
|
|
3774
|
|
3775 i = 0;
|
|
3776 state = r->upstream_states->elts;
|
|
3777
|
|
3778 for ( ;; ) {
|
|
3779 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
3780
|
|
3781 if (++i == r->upstream_states->nelts) {
|
|
3782 break;
|
|
3783 }
|
|
3784
|
|
3785 if (state[i].peer) {
|
|
3786 *p++ = ',';
|
|
3787 *p++ = ' ';
|
|
3788
|
|
3789 } else {
|
|
3790 *p++ = ' ';
|
|
3791 *p++ = ':';
|
|
3792 *p++ = ' ';
|
|
3793
|
|
3794 if (++i == r->upstream_states->nelts) {
|
|
3795 break;
|
|
3796 }
|
|
3797
|
|
3798 continue;
|
|
3799 }
|
|
3800 }
|
|
3801
|
|
3802 v->len = p - v->data;
|
|
3803
|
|
3804 return NGX_OK;
|
|
3805 }
|
|
3806
|
|
3807
|
296
|
3808 ngx_int_t
|
|
3809 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
3810 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3811 {
|
|
3812 if (r->upstream == NULL) {
|
|
3813 v->not_found = 1;
|
|
3814 return NGX_OK;
|
|
3815 }
|
|
3816
|
|
3817 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
3818 &r->upstream->headers_in.headers.part,
|
|
3819 sizeof("upstream_http_") - 1);
|
|
3820 }
|
|
3821
|
|
3822
|
502
|
3823 #if (NGX_HTTP_CACHE)
|
|
3824
|
|
3825 ngx_int_t
|
|
3826 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
3827 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3828 {
|
|
3829 ngx_uint_t n;
|
|
3830
|
|
3831 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
3832 v->not_found = 1;
|
|
3833 return NGX_OK;
|
|
3834 }
|
|
3835
|
|
3836 n = r->upstream->cache_status - 1;
|
|
3837
|
|
3838 v->valid = 1;
|
|
3839 v->no_cacheable = 0;
|
|
3840 v->not_found = 0;
|
|
3841 v->len = ngx_http_cache_status[n].len;
|
|
3842 v->data = ngx_http_cache_status[n].data;
|
|
3843
|
|
3844 return NGX_OK;
|
|
3845 }
|
|
3846
|
|
3847 #endif
|
|
3848
|
|
3849
|
200
|
3850 static char *
|
|
3851 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
3852 {
|
260
|
3853 char *rv;
|
|
3854 void *mconf;
|
|
3855 ngx_str_t *value;
|
|
3856 ngx_url_t u;
|
|
3857 ngx_uint_t m;
|
|
3858 ngx_conf_t pcf;
|
|
3859 ngx_http_module_t *module;
|
|
3860 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
3861 ngx_http_upstream_srv_conf_t *uscf;
|
|
3862
|
|
3863 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3864
|
|
3865 value = cf->args->elts;
|
|
3866 u.host = value[1];
|
|
3867 u.no_resolve = 1;
|
|
3868
|
|
3869 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
3870 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
3871 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
3872 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
3873 |NGX_HTTP_UPSTREAM_DOWN
|
|
3874 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
3875 if (uscf == NULL) {
|
|
3876 return NGX_CONF_ERROR;
|
|
3877 }
|
|
3878
|
200
|
3879
|
|
3880 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
3881 if (ctx == NULL) {
|
|
3882 return NGX_CONF_ERROR;
|
|
3883 }
|
|
3884
|
260
|
3885 http_ctx = cf->ctx;
|
|
3886 ctx->main_conf = http_ctx->main_conf;
|
200
|
3887
|
|
3888 /* the upstream{}'s srv_conf */
|
|
3889
|
|
3890 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3891 if (ctx->srv_conf == NULL) {
|
|
3892 return NGX_CONF_ERROR;
|
|
3893 }
|
|
3894
|
|
3895 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
3896
|
260
|
3897 uscf->srv_conf = ctx->srv_conf;
|
|
3898
|
200
|
3899
|
|
3900 /* the upstream{}'s loc_conf */
|
|
3901
|
|
3902 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3903 if (ctx->loc_conf == NULL) {
|
|
3904 return NGX_CONF_ERROR;
|
|
3905 }
|
|
3906
|
|
3907 for (m = 0; ngx_modules[m]; m++) {
|
|
3908 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
3909 continue;
|
|
3910 }
|
|
3911
|
|
3912 module = ngx_modules[m]->ctx;
|
|
3913
|
260
|
3914 if (module->create_srv_conf) {
|
|
3915 mconf = module->create_srv_conf(cf);
|
|
3916 if (mconf == NULL) {
|
|
3917 return NGX_CONF_ERROR;
|
|
3918 }
|
|
3919
|
|
3920 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3921 }
|
|
3922
|
200
|
3923 if (module->create_loc_conf) {
|
|
3924 mconf = module->create_loc_conf(cf);
|
|
3925 if (mconf == NULL) {
|
|
3926 return NGX_CONF_ERROR;
|
|
3927 }
|
|
3928
|
|
3929 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
3930 }
|
|
3931 }
|
|
3932
|
|
3933
|
|
3934 /* parse inside upstream{} */
|
|
3935
|
|
3936 pcf = *cf;
|
|
3937 cf->ctx = ctx;
|
|
3938 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
3939
|
|
3940 rv = ngx_conf_parse(cf, NULL);
|
|
3941
|
|
3942 *cf = pcf;
|
|
3943
|
|
3944 if (rv != NGX_CONF_OK) {
|
|
3945 return rv;
|
|
3946 }
|
|
3947
|
|
3948 if (uscf->servers == NULL) {
|
|
3949 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3950 "no servers are inside upstream");
|
|
3951 return NGX_CONF_ERROR;
|
|
3952 }
|
|
3953
|
|
3954 return rv;
|
|
3955 }
|
|
3956
|
|
3957
|
|
3958 static char *
|
|
3959 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
3960 {
|
|
3961 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
3962
|
260
|
3963 time_t fail_timeout;
|
|
3964 ngx_str_t *value, s;
|
|
3965 ngx_url_t u;
|
|
3966 ngx_int_t weight, max_fails;
|
|
3967 ngx_uint_t i;
|
|
3968 ngx_http_upstream_server_t *us;
|
200
|
3969
|
|
3970 if (uscf->servers == NULL) {
|
260
|
3971 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
3972 sizeof(ngx_http_upstream_server_t));
|
200
|
3973 if (uscf->servers == NULL) {
|
|
3974 return NGX_CONF_ERROR;
|
|
3975 }
|
|
3976 }
|
|
3977
|
260
|
3978 us = ngx_array_push(uscf->servers);
|
|
3979 if (us == NULL) {
|
200
|
3980 return NGX_CONF_ERROR;
|
|
3981 }
|
|
3982
|
260
|
3983 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
3984
|
200
|
3985 value = cf->args->elts;
|
|
3986
|
|
3987 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3988
|
|
3989 u.url = value[1];
|
266
|
3990 u.default_port = 80;
|
200
|
3991
|
340
|
3992 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
200
|
3993 if (u.err) {
|
|
3994 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
3995 "%s in upstream \"%V\"", u.err, &u.url);
|
|
3996 }
|
|
3997
|
|
3998 return NGX_CONF_ERROR;
|
|
3999 }
|
|
4000
|
212
|
4001 weight = 1;
|
260
|
4002 max_fails = 1;
|
|
4003 fail_timeout = 10;
|
|
4004
|
|
4005 for (i = 2; i < cf->args->nelts; i++) {
|
|
4006
|
|
4007 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
4008
|
|
4009 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
4010 goto invalid;
|
|
4011 }
|
|
4012
|
|
4013 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
212
|
4014
|
|
4015 if (weight == NGX_ERROR || weight == 0) {
|
|
4016 goto invalid;
|
|
4017 }
|
|
4018
|
260
|
4019 continue;
|
|
4020 }
|
|
4021
|
|
4022 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
4023
|
|
4024 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
4025 goto invalid;
|
|
4026 }
|
|
4027
|
|
4028 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
4029
|
|
4030 if (max_fails == NGX_ERROR) {
|
|
4031 goto invalid;
|
|
4032 }
|
|
4033
|
|
4034 continue;
|
212
|
4035 }
|
260
|
4036
|
|
4037 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
4038
|
|
4039 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
4040 goto invalid;
|
|
4041 }
|
|
4042
|
|
4043 s.len = value[i].len - 13;
|
|
4044 s.data = &value[i].data[13];
|
|
4045
|
|
4046 fail_timeout = ngx_parse_time(&s, 1);
|
|
4047
|
372
|
4048 if (fail_timeout == NGX_ERROR) {
|
260
|
4049 goto invalid;
|
|
4050 }
|
|
4051
|
|
4052 continue;
|
|
4053 }
|
|
4054
|
326
|
4055 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
4056
|
|
4057 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
4058 goto invalid;
|
|
4059 }
|
|
4060
|
|
4061 us->backup = 1;
|
|
4062
|
|
4063 continue;
|
|
4064 }
|
|
4065
|
260
|
4066 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
4067
|
|
4068 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
4069 goto invalid;
|
|
4070 }
|
|
4071
|
|
4072 us->down = 1;
|
|
4073
|
|
4074 continue;
|
|
4075 }
|
|
4076
|
|
4077 goto invalid;
|
212
|
4078 }
|
|
4079
|
260
|
4080 us->addrs = u.addrs;
|
|
4081 us->naddrs = u.naddrs;
|
|
4082 us->weight = weight;
|
|
4083 us->max_fails = max_fails;
|
|
4084 us->fail_timeout = fail_timeout;
|
200
|
4085
|
|
4086 return NGX_CONF_OK;
|
212
|
4087
|
|
4088 invalid:
|
|
4089
|
260
|
4090 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4091 "invalid parameter \"%V\"", &value[i]);
|
212
|
4092
|
|
4093 return NGX_CONF_ERROR;
|
200
|
4094 }
|
|
4095
|
|
4096
|
|
4097 ngx_http_upstream_srv_conf_t *
|
260
|
4098 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
200
|
4099 {
|
|
4100 ngx_uint_t i;
|
260
|
4101 ngx_http_upstream_server_t *us;
|
200
|
4102 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
4103 ngx_http_upstream_main_conf_t *umcf;
|
|
4104
|
260
|
4105 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
4106
|
340
|
4107 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
200
|
4108 if (u->err) {
|
|
4109 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4110 "%s in upstream \"%V\"", u->err, &u->url);
|
|
4111 }
|
|
4112
|
|
4113 return NULL;
|
|
4114 }
|
|
4115 }
|
|
4116
|
|
4117 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
4118
|
|
4119 uscfp = umcf->upstreams.elts;
|
|
4120
|
|
4121 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
266
|
4122
|
|
4123 if (uscfp[i]->host.len != u->host.len
|
260
|
4124 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
4125 != 0)
|
|
4126 {
|
200
|
4127 continue;
|
|
4128 }
|
|
4129
|
260
|
4130 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
4131 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
200
|
4132 {
|
260
|
4133 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4134 "duplicate upstream \"%V\"", &u->host);
|
|
4135 return NULL;
|
200
|
4136 }
|
260
|
4137
|
266
|
4138 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
260
|
4139 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
266
|
4140 "upstream \"%V\" may not have port %d",
|
|
4141 &u->host, u->port);
|
|
4142 return NULL;
|
|
4143 }
|
|
4144
|
|
4145 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
4146 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
4147 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
4148 &u->host, uscfp[i]->port,
|
336
|
4149 uscfp[i]->file_name, uscfp[i]->line);
|
266
|
4150 return NULL;
|
|
4151 }
|
|
4152
|
|
4153 if (uscfp[i]->port != u->port) {
|
|
4154 continue;
|
260
|
4155 }
|
|
4156
|
324
|
4157 if (uscfp[i]->default_port && u->default_port
|
|
4158 && uscfp[i]->default_port != u->default_port)
|
|
4159 {
|
|
4160 continue;
|
|
4161 }
|
|
4162
|
260
|
4163 return uscfp[i];
|
200
|
4164 }
|
|
4165
|
|
4166 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
4167 if (uscf == NULL) {
|
|
4168 return NULL;
|
|
4169 }
|
|
4170
|
260
|
4171 uscf->flags = flags;
|
200
|
4172 uscf->host = u->host;
|
336
|
4173 uscf->file_name = cf->conf_file->file.name.data;
|
200
|
4174 uscf->line = cf->conf_file->line;
|
266
|
4175 uscf->port = u->port;
|
|
4176 uscf->default_port = u->default_port;
|
260
|
4177
|
|
4178 if (u->naddrs == 1) {
|
|
4179 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
4180 sizeof(ngx_http_upstream_server_t));
|
|
4181 if (uscf->servers == NULL) {
|
|
4182 return NGX_CONF_ERROR;
|
|
4183 }
|
|
4184
|
|
4185 us = ngx_array_push(uscf->servers);
|
|
4186 if (us == NULL) {
|
|
4187 return NGX_CONF_ERROR;
|
|
4188 }
|
|
4189
|
|
4190 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
4191
|
|
4192 us->addrs = u->addrs;
|
|
4193 us->naddrs = u->naddrs;
|
|
4194 }
|
200
|
4195
|
|
4196 uscfp = ngx_array_push(&umcf->upstreams);
|
|
4197 if (uscfp == NULL) {
|
|
4198 return NULL;
|
|
4199 }
|
|
4200
|
|
4201 *uscfp = uscf;
|
|
4202
|
|
4203 return uscf;
|
|
4204 }
|
|
4205
|
|
4206
|
540
|
4207 char *
|
558
|
4208 ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
540
|
4209 void *conf)
|
|
4210 {
|
|
4211 char *p = conf;
|
|
4212
|
|
4213 ngx_int_t rc;
|
|
4214 ngx_str_t *value;
|
|
4215 ngx_addr_t **paddr;
|
|
4216
|
|
4217 paddr = (ngx_addr_t **) (p + cmd->offset);
|
|
4218
|
|
4219 *paddr = ngx_palloc(cf->pool, sizeof(ngx_addr_t));
|
|
4220 if (*paddr == NULL) {
|
|
4221 return NGX_CONF_ERROR;
|
|
4222 }
|
|
4223
|
|
4224 value = cf->args->elts;
|
|
4225
|
|
4226 rc = ngx_parse_addr(cf->pool, *paddr, value[1].data, value[1].len);
|
|
4227
|
|
4228 switch (rc) {
|
|
4229 case NGX_OK:
|
|
4230 (*paddr)->name = value[1];
|
|
4231 return NGX_CONF_OK;
|
|
4232
|
|
4233 case NGX_DECLINED:
|
|
4234 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4235 "invalid address \"%V\"", &value[1]);
|
|
4236 default:
|
|
4237 return NGX_CONF_ERROR;
|
|
4238 }
|
|
4239 }
|
|
4240
|
|
4241
|
356
|
4242 ngx_int_t
|
|
4243 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
4244 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
4245 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
4246 {
|
|
4247 ngx_str_t *h;
|
|
4248 ngx_uint_t i, j;
|
|
4249 ngx_array_t hide_headers;
|
|
4250 ngx_hash_key_t *hk;
|
|
4251
|
|
4252 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
4253 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
4254 {
|
|
4255 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
4256
|
498
|
4257 if (conf->hide_headers_hash.buckets
|
502
|
4258 #if (NGX_HTTP_CACHE)
|
|
4259 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
4260 #endif
|
|
4261 )
|
498
|
4262 {
|
356
|
4263 return NGX_OK;
|
|
4264 }
|
|
4265
|
|
4266 conf->hide_headers = prev->hide_headers;
|
|
4267 conf->pass_headers = prev->pass_headers;
|
|
4268
|
|
4269 } else {
|
|
4270 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
4271 conf->hide_headers = prev->hide_headers;
|
|
4272 }
|
|
4273
|
|
4274 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
4275 conf->pass_headers = prev->pass_headers;
|
|
4276 }
|
|
4277 }
|
|
4278
|
|
4279 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
4280 != NGX_OK)
|
|
4281 {
|
|
4282 return NGX_ERROR;
|
|
4283 }
|
|
4284
|
|
4285 for (h = default_hide_headers; h->len; h++) {
|
|
4286 hk = ngx_array_push(&hide_headers);
|
|
4287 if (hk == NULL) {
|
|
4288 return NGX_ERROR;
|
|
4289 }
|
|
4290
|
|
4291 hk->key = *h;
|
|
4292 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
4293 hk->value = (void *) 1;
|
|
4294 }
|
|
4295
|
|
4296 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
4297
|
|
4298 h = conf->hide_headers->elts;
|
|
4299
|
|
4300 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
4301
|
|
4302 hk = hide_headers.elts;
|
|
4303
|
|
4304 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4305 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4306 goto exist;
|
|
4307 }
|
|
4308 }
|
|
4309
|
|
4310 hk = ngx_array_push(&hide_headers);
|
|
4311 if (hk == NULL) {
|
|
4312 return NGX_ERROR;
|
|
4313 }
|
|
4314
|
|
4315 hk->key = h[i];
|
|
4316 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
4317 hk->value = (void *) 1;
|
|
4318
|
|
4319 exist:
|
|
4320
|
|
4321 continue;
|
|
4322 }
|
|
4323 }
|
|
4324
|
|
4325 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
4326
|
|
4327 h = conf->pass_headers->elts;
|
|
4328 hk = hide_headers.elts;
|
|
4329
|
|
4330 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
4331 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4332
|
|
4333 if (hk[j].key.data == NULL) {
|
|
4334 continue;
|
|
4335 }
|
|
4336
|
|
4337 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4338 hk[j].key.data = NULL;
|
|
4339 break;
|
|
4340 }
|
|
4341 }
|
|
4342 }
|
|
4343 }
|
|
4344
|
|
4345 hash->hash = &conf->hide_headers_hash;
|
|
4346 hash->key = ngx_hash_key_lc;
|
|
4347 hash->pool = cf->pool;
|
|
4348 hash->temp_pool = NULL;
|
|
4349
|
|
4350 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
4351 }
|
|
4352
|
|
4353
|
58
|
4354 static void *
|
|
4355 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
4356 {
|
|
4357 ngx_http_upstream_main_conf_t *umcf;
|
|
4358
|
|
4359 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
4360 if (umcf == NULL) {
|
|
4361 return NULL;
|
|
4362 }
|
|
4363
|
200
|
4364 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
4365 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
4366 != NGX_OK)
|
|
4367 {
|
496
|
4368 return NULL;
|
200
|
4369 }
|
|
4370
|
58
|
4371 return umcf;
|
|
4372 }
|
|
4373
|
|
4374
|
|
4375 static char *
|
200
|
4376 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
58
|
4377 {
|
|
4378 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
4379
|
200
|
4380 ngx_uint_t i;
|
|
4381 ngx_array_t headers_in;
|
|
4382 ngx_hash_key_t *hk;
|
|
4383 ngx_hash_init_t hash;
|
260
|
4384 ngx_http_upstream_init_pt init;
|
200
|
4385 ngx_http_upstream_header_t *header;
|
|
4386 ngx_http_upstream_srv_conf_t **uscfp;
|
|
4387
|
|
4388 uscfp = umcf->upstreams.elts;
|
|
4389
|
|
4390 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
260
|
4391
|
|
4392 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
4393 ngx_http_upstream_init_round_robin;
|
|
4394
|
|
4395 if (init(cf, uscfp[i]) != NGX_OK) {
|
200
|
4396 return NGX_CONF_ERROR;
|
|
4397 }
|
|
4398 }
|
198
|
4399
|
212
|
4400
|
260
|
4401 /* upstream_headers_in_hash */
|
|
4402
|
198
|
4403 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
4404 != NGX_OK)
|
58
|
4405 {
|
|
4406 return NGX_CONF_ERROR;
|
|
4407 }
|
|
4408
|
198
|
4409 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
4410 hk = ngx_array_push(&headers_in);
|
|
4411 if (hk == NULL) {
|
|
4412 return NGX_CONF_ERROR;
|
|
4413 }
|
|
4414
|
|
4415 hk->key = header->name;
|
|
4416 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
4417 hk->value = header;
|
|
4418 }
|
|
4419
|
|
4420 hash.hash = &umcf->headers_in_hash;
|
|
4421 hash.key = ngx_hash_key_lc;
|
|
4422 hash.max_size = 512;
|
244
|
4423 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
198
|
4424 hash.name = "upstream_headers_in_hash";
|
|
4425 hash.pool = cf->pool;
|
|
4426 hash.temp_pool = NULL;
|
|
4427
|
|
4428 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
4429 return NGX_CONF_ERROR;
|
|
4430 }
|
58
|
4431
|
|
4432 return NGX_CONF_OK;
|
|
4433 }
|