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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473
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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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511
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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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473
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19 #endif
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20
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529
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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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439
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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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420
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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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473
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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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439
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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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439
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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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437
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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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439
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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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437
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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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439
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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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597
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75 static ngx_int_t ngx_http_upstream_process_set_cookie(ngx_http_request_t *r,
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76 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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77 static ngx_int_t
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481
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78 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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58
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79 ngx_table_elt_t *h, ngx_uint_t offset);
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80 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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81 ngx_table_elt_t *h, ngx_uint_t offset);
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481
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82 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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83 ngx_table_elt_t *h, ngx_uint_t offset);
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84 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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85 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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86 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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87 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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88 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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90 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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91 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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92 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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93 ngx_table_elt_t *h, ngx_uint_t offset);
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94 static ngx_int_t
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95 ngx_http_upstream_copy_multi_header_lines(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_type(ngx_http_request_t *r,
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98 ngx_table_elt_t *h, ngx_uint_t offset);
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99 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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100 ngx_table_elt_t *h, ngx_uint_t offset);
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473
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101 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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102 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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103 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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104 ngx_table_elt_t *h, ngx_uint_t offset);
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105 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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106 ngx_table_elt_t *h, ngx_uint_t offset);
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473
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107 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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108 ngx_table_elt_t *h, ngx_uint_t offset);
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109
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58
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110 #if (NGX_HTTP_GZIP)
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111 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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112 ngx_table_elt_t *h, ngx_uint_t offset);
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113 #endif
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114
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122
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115 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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116 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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117 ngx_http_variable_value_t *v, uintptr_t data);
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122
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118 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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119 ngx_http_variable_value_t *v, uintptr_t data);
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120 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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121 ngx_http_variable_value_t *v, uintptr_t data);
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439
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122 static ngx_int_t ngx_http_upstream_response_length_variable(
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123 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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124
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200
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125 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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126 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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127 void *conf);
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128
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58
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129 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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130 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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131
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126
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132 #if (NGX_HTTP_SSL)
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140
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133 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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134 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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135 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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136 #endif
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137
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58
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138
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139 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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140
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141 { ngx_string("Status"),
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142 ngx_http_upstream_process_header_line,
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143 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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144 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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145
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146 { ngx_string("Content-Type"),
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147 ngx_http_upstream_process_header_line,
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148 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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149 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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150
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151 { ngx_string("Content-Length"),
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152 ngx_http_upstream_process_header_line,
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153 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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154 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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155
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156 { ngx_string("Date"),
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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159 ngx_http_upstream_copy_header_line,
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160 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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161
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318
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162 { ngx_string("Last-Modified"),
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163 ngx_http_upstream_process_header_line,
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164 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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473
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165 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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166
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527
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167 { ngx_string("ETag"),
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168 ngx_http_upstream_process_header_line,
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169 offsetof(ngx_http_upstream_headers_in_t, etag),
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170 ngx_http_upstream_copy_header_line,
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171 offsetof(ngx_http_headers_out_t, etag), 0 },
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172
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58
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173 { ngx_string("Server"),
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174 ngx_http_upstream_process_header_line,
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175 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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176 ngx_http_upstream_copy_header_line,
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177 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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178
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78
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179 { ngx_string("WWW-Authenticate"),
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180 ngx_http_upstream_process_header_line,
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181 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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182 ngx_http_upstream_copy_header_line, 0, 0 },
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183
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58
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184 { ngx_string("Location"),
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394
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185 ngx_http_upstream_process_header_line,
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186 offsetof(ngx_http_upstream_headers_in_t, location),
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187 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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188
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189 { ngx_string("Refresh"),
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190 ngx_http_upstream_ignore_header_line, 0,
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64
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191 ngx_http_upstream_rewrite_refresh, 0, 0 },
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192
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193 { ngx_string("Set-Cookie"),
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597
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194 ngx_http_upstream_process_set_cookie, 0,
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80
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195 ngx_http_upstream_copy_header_line, 0, 1 },
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196
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197 { ngx_string("Content-Disposition"),
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198 ngx_http_upstream_ignore_header_line, 0,
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199 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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200
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201 { ngx_string("Cache-Control"),
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481
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202 ngx_http_upstream_process_cache_control, 0,
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203 ngx_http_upstream_copy_multi_header_lines,
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204 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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205
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122
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206 { ngx_string("Expires"),
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481
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207 ngx_http_upstream_process_expires, 0,
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122
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208 ngx_http_upstream_copy_header_line,
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209 offsetof(ngx_http_headers_out_t, expires), 1 },
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210
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126
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211 { ngx_string("Accept-Ranges"),
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212 ngx_http_upstream_process_header_line,
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213 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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473
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214 ngx_http_upstream_copy_allow_ranges,
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126
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215 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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216
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58
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217 { ngx_string("Connection"),
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218 ngx_http_upstream_ignore_header_line, 0,
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64
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219 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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220
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190
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221 { ngx_string("Keep-Alive"),
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222 ngx_http_upstream_ignore_header_line, 0,
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223 ngx_http_upstream_ignore_header_line, 0, 0 },
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224
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58
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225 { ngx_string("X-Powered-By"),
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226 ngx_http_upstream_ignore_header_line, 0,
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198
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227 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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228
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229 { ngx_string("X-Accel-Expires"),
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481
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230 ngx_http_upstream_process_accel_expires, 0,
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198
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231 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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232
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233 { ngx_string("X-Accel-Redirect"),
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234 ngx_http_upstream_process_header_line,
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235 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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520
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236 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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237
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76
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238 { ngx_string("X-Accel-Limit-Rate"),
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239 ngx_http_upstream_process_limit_rate, 0,
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520
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240 ngx_http_upstream_copy_header_line, 0, 0 },
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76
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241
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198
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242 { ngx_string("X-Accel-Buffering"),
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243 ngx_http_upstream_process_buffering, 0,
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520
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244 ngx_http_upstream_copy_header_line, 0, 0 },
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198
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245
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206
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246 { ngx_string("X-Accel-Charset"),
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247 ngx_http_upstream_process_charset, 0,
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520
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248 ngx_http_upstream_copy_header_line, 0, 0 },
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206
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249
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58
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250 #if (NGX_HTTP_GZIP)
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251 { ngx_string("Content-Encoding"),
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252 ngx_http_upstream_process_header_line,
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253 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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254 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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255 #endif
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256
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64
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257 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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258 };
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28
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259
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260
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200
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261 static ngx_command_t ngx_http_upstream_commands[] = {
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262
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263 { ngx_string("upstream"),
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264 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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265 ngx_http_upstream,
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266 0,
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267 0,
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268 NULL },
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269
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270 { ngx_string("server"),
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260
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271 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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272 ngx_http_upstream_server,
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273 NGX_HTTP_SRV_CONF_OFFSET,
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274 0,
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275 NULL },
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276
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277 ngx_null_command
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278 };
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279
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280
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281 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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282 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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283 NULL, /* postconfiguration */
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284
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285 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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286 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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287
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288 NULL, /* create server configuration */
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289 NULL, /* merge server configuration */
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290
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291 NULL, /* create location configuration */
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292 NULL /* merge location configuration */
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293 };
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126
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294
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28
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295
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296 ngx_module_t ngx_http_upstream_module = {
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58
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297 NGX_MODULE_V1,
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28
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298 &ngx_http_upstream_module_ctx, /* module context */
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200
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299 ngx_http_upstream_commands, /* module directives */
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28
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300 NGX_HTTP_MODULE, /* module type */
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90
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301 NULL, /* init master */
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28
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302 NULL, /* init module */
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90
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303 NULL, /* init process */
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304 NULL, /* init thread */
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305 NULL, /* exit thread */
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306 NULL, /* exit process */
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307 NULL, /* exit master */
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308 NGX_MODULE_V1_PADDING
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28
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309 };
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310
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311
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122
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312 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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313
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298
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314 { ngx_string("upstream_addr"), NULL,
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435
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315 ngx_http_upstream_addr_variable, 0,
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316 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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317
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186
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318 { ngx_string("upstream_status"), NULL,
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435
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319 ngx_http_upstream_status_variable, 0,
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320 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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321
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186
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322 { ngx_string("upstream_response_time"), NULL,
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435
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323 ngx_http_upstream_response_time_variable, 0,
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324 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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325
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439
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326 { ngx_string("upstream_response_length"), NULL,
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327 ngx_http_upstream_response_length_variable, 0,
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328 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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329
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513
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330 #if (NGX_HTTP_CACHE)
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331
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511
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332 { ngx_string("upstream_cache_status"), NULL,
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333 ngx_http_upstream_cache_status, 0,
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334 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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335
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513
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336 #endif
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337
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186
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338 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
|
339 };
|
|
340
|
|
341
|
420
|
342 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
343 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
344 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
345 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
346 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
347 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
348 { 0, 0 }
|
|
349 };
|
|
350
|
503
|
351
|
|
352 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
353 { ngx_string("GET"), NGX_HTTP_GET},
|
|
354 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
355 { ngx_string("POST"), NGX_HTTP_POST },
|
|
356 { ngx_null_string, 0 }
|
|
357 };
|
|
358
|
|
359
|
597
|
360 ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[] = {
|
|
361 { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT },
|
|
362 { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES },
|
|
363 { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES },
|
|
364 { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL },
|
|
365 { ngx_string("Set-Cookie"), NGX_HTTP_UPSTREAM_IGN_SET_COOKIE },
|
|
366 { ngx_null_string, 0 }
|
|
367 };
|
|
368
|
|
369
|
520
|
370 ngx_int_t
|
|
371 ngx_http_upstream_create(ngx_http_request_t *r)
|
|
372 {
|
|
373 ngx_http_upstream_t *u;
|
|
374
|
|
375 u = r->upstream;
|
|
376
|
|
377 if (u && u->cleanup) {
|
537
|
378 r->main->count++;
|
520
|
379 ngx_http_upstream_cleanup(r);
|
|
380 }
|
|
381
|
|
382 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
383 if (u == NULL) {
|
|
384 return NGX_ERROR;
|
|
385 }
|
|
386
|
|
387 r->upstream = u;
|
|
388
|
|
389 u->peer.log = r->connection->log;
|
|
390 u->peer.log_error = NGX_ERROR_ERR;
|
|
391 #if (NGX_THREADS)
|
|
392 u->peer.lock = &r->connection->lock;
|
|
393 #endif
|
|
394
|
529
|
395 #if (NGX_HTTP_CACHE)
|
|
396 r->cache = NULL;
|
|
397 #endif
|
|
398
|
520
|
399 return NGX_OK;
|
|
400 }
|
|
401
|
|
402
|
36
|
403 void
|
|
404 ngx_http_upstream_init(ngx_http_request_t *r)
|
28
|
405 {
|
529
|
406 ngx_connection_t *c;
|
28
|
407
|
|
408 c = r->connection;
|
|
409
|
|
410 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
411 "http init upstream, client timer: %d", c->read->timer_set);
|
|
412
|
|
413 if (c->read->timer_set) {
|
|
414 ngx_del_timer(c->read);
|
|
415 }
|
|
416
|
|
417 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
418
|
|
419 if (!c->write->active) {
|
80
|
420 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
421 == NGX_ERROR)
|
28
|
422 {
|
|
423 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424 return;
|
|
425 }
|
|
426 }
|
|
427 }
|
|
428
|
529
|
429 ngx_http_upstream_init_request(r);
|
|
430 }
|
|
431
|
|
432
|
|
433 static void
|
|
434 ngx_http_upstream_init_request(ngx_http_request_t *r)
|
|
435 {
|
|
436 ngx_str_t *host;
|
|
437 ngx_uint_t i;
|
|
438 ngx_resolver_ctx_t *ctx, temp;
|
|
439 ngx_http_cleanup_t *cln;
|
|
440 ngx_http_upstream_t *u;
|
|
441 ngx_http_core_loc_conf_t *clcf;
|
|
442 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
443 ngx_http_upstream_main_conf_t *umcf;
|
|
444
|
|
445 if (r->aio) {
|
|
446 return;
|
86
|
447 }
|
58
|
448
|
529
|
449 u = r->upstream;
|
|
450
|
473
|
451 #if (NGX_HTTP_CACHE)
|
|
452
|
|
453 if (u->conf->cache) {
|
|
454 ngx_int_t rc;
|
|
455
|
|
456 rc = ngx_http_upstream_cache(r, u);
|
|
457
|
529
|
458 if (rc == NGX_BUSY) {
|
|
459 r->write_event_handler = ngx_http_upstream_init_request;
|
|
460 return;
|
|
461 }
|
|
462
|
|
463 r->write_event_handler = ngx_http_request_empty_handler;
|
|
464
|
473
|
465 if (rc == NGX_DONE) {
|
|
466 return;
|
|
467 }
|
|
468
|
|
469 if (rc != NGX_DECLINED) {
|
|
470 ngx_http_finalize_request(r, rc);
|
|
471 return;
|
|
472 }
|
|
473 }
|
|
474
|
|
475 #endif
|
|
476
|
529
|
477 u->store = (u->conf->store || u->conf->store_lengths);
|
|
478
|
|
479 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
480 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
481 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
482 }
|
|
483
|
|
484 if (r->request_body) {
|
|
485 u->request_bufs = r->request_body->bufs;
|
|
486 }
|
|
487
|
86
|
488 if (u->create_request(r) != NGX_OK) {
|
28
|
489 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
490 return;
|
|
491 }
|
|
492
|
552
|
493 u->peer.local = u->conf->local;
|
|
494
|
58
|
495 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
28
|
496
|
529
|
497 u->output.alignment = clcf->directio_alignment;
|
28
|
498 u->output.pool = r->pool;
|
|
499 u->output.bufs.num = 1;
|
58
|
500 u->output.bufs.size = clcf->client_body_buffer_size;
|
28
|
501 u->output.output_filter = ngx_chain_writer;
|
|
502 u->output.filter_ctx = &u->writer;
|
|
503
|
|
504 u->writer.pool = r->pool;
|
|
505
|
296
|
506 if (r->upstream_states == NULL) {
|
|
507
|
|
508 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
509 sizeof(ngx_http_upstream_state_t));
|
|
510 if (r->upstream_states == NULL) {
|
|
511 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
512 return;
|
|
513 }
|
|
514
|
|
515 } else {
|
|
516
|
|
517 u->state = ngx_array_push(r->upstream_states);
|
|
518 if (u->state == NULL) {
|
|
519 ngx_http_upstream_finalize_request(r, u,
|
|
520 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
521 return;
|
|
522 }
|
|
523
|
|
524 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
28
|
525 }
|
|
526
|
142
|
527 cln = ngx_http_cleanup_add(r, 0);
|
118
|
528 if (cln == NULL) {
|
|
529 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
530 return;
|
|
531 }
|
|
532
|
|
533 cln->handler = ngx_http_upstream_cleanup;
|
|
534 cln->data = r;
|
|
535 u->cleanup = &cln->handler;
|
|
536
|
348
|
537 if (u->resolved == NULL) {
|
|
538
|
|
539 uscf = u->conf->upstream;
|
|
540
|
|
541 } else {
|
|
542
|
443
|
543 if (u->resolved->sockaddr) {
|
|
544
|
|
545 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
546 != NGX_OK)
|
|
547 {
|
542
|
548 ngx_http_upstream_finalize_request(r, u,
|
|
549 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
443
|
550 return;
|
|
551 }
|
|
552
|
|
553 ngx_http_upstream_connect(r, u);
|
|
554
|
|
555 return;
|
|
556 }
|
|
557
|
356
|
558 host = &u->resolved->host;
|
348
|
559
|
|
560 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
561
|
|
562 uscfp = umcf->upstreams.elts;
|
|
563
|
|
564 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
565
|
|
566 uscf = uscfp[i];
|
|
567
|
|
568 if (uscf->host.len == host->len
|
425
|
569 && ((uscf->port == 0 && u->resolved->no_port)
|
366
|
570 || uscf->port == u->resolved->port)
|
348
|
571 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
572 {
|
|
573 goto found;
|
|
574 }
|
|
575 }
|
|
576
|
631
|
577 if (u->resolved->port == 0) {
|
|
578 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
579 "no port in upstream \"%V\"", host);
|
|
580 ngx_http_upstream_finalize_request(r, u,
|
|
581 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
582 return;
|
|
583 }
|
|
584
|
348
|
585 temp.name = *host;
|
|
586
|
|
587 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
588 if (ctx == NULL) {
|
542
|
589 ngx_http_upstream_finalize_request(r, u,
|
|
590 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
591 return;
|
|
592 }
|
|
593
|
354
|
594 if (ctx == NGX_NO_RESOLVER) {
|
529
|
595 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
354
|
596 "no resolver defined to resolve %V", host);
|
|
597
|
542
|
598 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
354
|
599 return;
|
|
600 }
|
|
601
|
348
|
602 ctx->name = *host;
|
|
603 ctx->type = NGX_RESOLVE_A;
|
|
604 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
605 ctx->data = r;
|
|
606 ctx->timeout = clcf->resolver_timeout;
|
|
607
|
372
|
608 u->resolved->ctx = ctx;
|
|
609
|
348
|
610 if (ngx_resolve_name(ctx) != NGX_OK) {
|
372
|
611 u->resolved->ctx = NULL;
|
542
|
612 ngx_http_upstream_finalize_request(r, u,
|
|
613 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
614 return;
|
|
615 }
|
|
616
|
|
617 return;
|
|
618 }
|
|
619
|
|
620 found:
|
|
621
|
|
622 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
542
|
623 ngx_http_upstream_finalize_request(r, u,
|
|
624 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
625 return;
|
|
626 }
|
|
627
|
28
|
628 ngx_http_upstream_connect(r, u);
|
|
629 }
|
|
630
|
|
631
|
473
|
632 #if (NGX_HTTP_CACHE)
|
|
633
|
|
634 static ngx_int_t
|
|
635 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
636 {
|
|
637 ngx_int_t rc;
|
|
638 ngx_http_cache_t *c;
|
|
639
|
529
|
640 c = r->cache;
|
|
641
|
473
|
642 if (c == NULL) {
|
529
|
643
|
601
|
644 switch (ngx_http_test_predicates(r, u->conf->cache_bypass)) {
|
|
645
|
|
646 case NGX_ERROR:
|
|
647 return NGX_ERROR;
|
|
648
|
|
649 case NGX_DECLINED:
|
|
650 u->cache_status = NGX_HTTP_CACHE_BYPASS;
|
|
651 return NGX_DECLINED;
|
|
652
|
|
653 default: /* NGX_OK */
|
|
654 break;
|
585
|
655 }
|
|
656
|
529
|
657 if (!(r->method & u->conf->cache_methods)) {
|
|
658 return NGX_DECLINED;
|
|
659 }
|
|
660
|
|
661 if (r->method & NGX_HTTP_HEAD) {
|
|
662 u->method = ngx_http_core_get_method;
|
|
663 }
|
|
664
|
601
|
665 if (ngx_http_file_cache_new(r) != NGX_OK) {
|
529
|
666 return NGX_ERROR;
|
|
667 }
|
|
668
|
|
669 if (u->create_key(r) != NGX_OK) {
|
|
670 return NGX_ERROR;
|
|
671 }
|
|
672
|
|
673 /* TODO: add keys */
|
|
674
|
|
675 ngx_http_file_cache_create_key(r);
|
|
676
|
|
677 u->cacheable = 1;
|
|
678
|
601
|
679 c = r->cache;
|
|
680
|
529
|
681 c->min_uses = u->conf->cache_min_uses;
|
|
682 c->body_start = u->conf->buffer_size;
|
|
683 c->file_cache = u->conf->cache->data;
|
|
684
|
|
685 u->cache_status = NGX_HTTP_CACHE_MISS;
|
473
|
686 }
|
|
687
|
|
688 rc = ngx_http_file_cache_open(r);
|
|
689
|
507
|
690 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
691 "http upstream cache: %i", rc);
|
|
692
|
511
|
693 switch (rc) {
|
|
694
|
|
695 case NGX_HTTP_CACHE_UPDATING:
|
|
696
|
507
|
697 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
511
|
698 u->cache_status = rc;
|
507
|
699 rc = NGX_OK;
|
|
700
|
|
701 } else {
|
|
702 rc = NGX_HTTP_CACHE_STALE;
|
|
703 }
|
511
|
704
|
|
705 break;
|
|
706
|
|
707 case NGX_OK:
|
|
708 u->cache_status = NGX_HTTP_CACHE_HIT;
|
507
|
709 }
|
473
|
710
|
511
|
711 switch (rc) {
|
|
712
|
|
713 case NGX_OK:
|
473
|
714
|
|
715 rc = ngx_http_upstream_cache_send(r, u);
|
|
716
|
|
717 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
718 return rc;
|
|
719 }
|
|
720
|
511
|
721 break;
|
|
722
|
|
723 case NGX_HTTP_CACHE_STALE:
|
473
|
724
|
481
|
725 c->valid_sec = 0;
|
473
|
726 u->buffer.start = NULL;
|
511
|
727 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
728
|
|
729 break;
|
|
730
|
|
731 case NGX_DECLINED:
|
473
|
732
|
|
733 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
734 u->buffer.start = NULL;
|
|
735
|
|
736 } else {
|
|
737 u->buffer.pos = u->buffer.start + c->header_start;
|
|
738 u->buffer.last = u->buffer.pos;
|
|
739 }
|
|
740
|
511
|
741 break;
|
|
742
|
529
|
743 case NGX_HTTP_CACHE_SCARCE:
|
473
|
744
|
|
745 u->cacheable = 0;
|
|
746
|
511
|
747 break;
|
|
748
|
529
|
749 case NGX_AGAIN:
|
|
750
|
|
751 return NGX_BUSY;
|
|
752
|
|
753 case NGX_ERROR:
|
|
754
|
|
755 return NGX_ERROR;
|
|
756
|
511
|
757 default:
|
473
|
758
|
|
759 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
760
|
511
|
761 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
762
|
473
|
763 return rc;
|
|
764 }
|
|
765
|
|
766 r->cached = 0;
|
|
767
|
|
768 return NGX_DECLINED;
|
|
769 }
|
|
770
|
|
771
|
|
772 static ngx_int_t
|
|
773 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
774 {
|
|
775 ngx_int_t rc;
|
|
776 ngx_http_cache_t *c;
|
|
777
|
511
|
778 r->cached = 1;
|
473
|
779 c = r->cache;
|
|
780
|
566
|
781 if (c->header_start == c->body_start) {
|
|
782 r->http_version = NGX_HTTP_VERSION_9;
|
|
783 return ngx_http_cache_send(r);
|
|
784 }
|
|
785
|
473
|
786 /* TODO: cache stack */
|
|
787
|
|
788 u->buffer = *c->buf;
|
|
789 u->buffer.pos += c->header_start;
|
|
790
|
|
791 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
792
|
|
793 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
794 sizeof(ngx_table_elt_t))
|
|
795 != NGX_OK)
|
|
796 {
|
|
797 return NGX_ERROR;
|
|
798 }
|
|
799
|
|
800 rc = u->process_header(r);
|
|
801
|
|
802 if (rc == NGX_OK) {
|
|
803
|
|
804 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
805 return NGX_DONE;
|
|
806 }
|
|
807
|
|
808 return ngx_http_cache_send(r);
|
|
809 }
|
|
810
|
|
811 if (rc == NGX_ERROR) {
|
|
812 return NGX_ERROR;
|
|
813 }
|
|
814
|
|
815 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
816
|
|
817 /* TODO: delete file */
|
|
818
|
|
819 return rc;
|
|
820 }
|
|
821
|
|
822 #endif
|
|
823
|
|
824
|
36
|
825 static void
|
348
|
826 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
827 {
|
|
828 ngx_http_request_t *r;
|
542
|
829 ngx_http_upstream_t *u;
|
348
|
830 ngx_http_upstream_resolved_t *ur;
|
|
831
|
|
832 r = ctx->data;
|
|
833
|
542
|
834 u = r->upstream;
|
|
835 ur = u->resolved;
|
348
|
836
|
|
837 if (ctx->state) {
|
|
838 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
839 "%V could not be resolved (%i: %s)",
|
|
840 &ctx->name, ctx->state,
|
|
841 ngx_resolver_strerror(ctx->state));
|
|
842
|
542
|
843 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
348
|
844 return;
|
|
845 }
|
|
846
|
|
847 ur->naddrs = ctx->naddrs;
|
|
848 ur->addrs = ctx->addrs;
|
|
849
|
|
850 #if (NGX_DEBUG)
|
|
851 {
|
|
852 in_addr_t addr;
|
|
853 ngx_uint_t i;
|
|
854
|
|
855 for (i = 0; i < ctx->naddrs; i++) {
|
|
856 addr = ntohl(ur->addrs[i]);
|
|
857
|
|
858 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
859 "name was resolved to %ud.%ud.%ud.%ud",
|
|
860 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
861 (addr >> 8) & 0xff, addr & 0xff);
|
|
862 }
|
|
863 }
|
|
864 #endif
|
|
865
|
|
866 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
542
|
867 ngx_http_upstream_finalize_request(r, u,
|
|
868 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
348
|
869 return;
|
|
870 }
|
|
871
|
|
872 ngx_resolve_name_done(ctx);
|
542
|
873 ur->ctx = NULL;
|
|
874
|
|
875 ngx_http_upstream_connect(r, u);
|
348
|
876 }
|
|
877
|
|
878
|
|
879 static void
|
435
|
880 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
881 {
|
|
882 ngx_connection_t *c;
|
|
883 ngx_http_request_t *r;
|
|
884 ngx_http_log_ctx_t *ctx;
|
|
885 ngx_http_upstream_t *u;
|
|
886
|
|
887 c = ev->data;
|
|
888 r = c->data;
|
|
889
|
|
890 u = r->upstream;
|
|
891 c = r->connection;
|
|
892
|
|
893 ctx = c->log->data;
|
|
894 ctx->current_request = r;
|
|
895
|
|
896 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
897 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
898
|
|
899 if (ev->write) {
|
439
|
900 u->write_event_handler(r, u);
|
435
|
901
|
|
902 } else {
|
439
|
903 u->read_event_handler(r, u);
|
435
|
904 }
|
|
905
|
|
906 ngx_http_run_posted_requests(c);
|
|
907 }
|
|
908
|
|
909
|
|
910 static void
|
58
|
911 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
912 {
|
|
913 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
914 }
|
|
915
|
|
916
|
|
917 static void
|
|
918 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
919 {
|
|
920 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
921 }
|
|
922
|
|
923
|
|
924 static void
|
|
925 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
926 ngx_event_t *ev)
|
28
|
927 {
|
|
928 int n;
|
|
929 char buf[1];
|
126
|
930 ngx_err_t err;
|
495
|
931 ngx_int_t event;
|
28
|
932 ngx_connection_t *c;
|
|
933 ngx_http_upstream_t *u;
|
|
934
|
76
|
935 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
936 "http upstream check client, write event:%d, \"%V\"",
|
|
937 ev->write, &r->uri);
|
28
|
938
|
58
|
939 c = r->connection;
|
32
|
940 u = r->upstream;
|
|
941
|
132
|
942 if (c->error) {
|
495
|
943 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
944
|
|
945 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
946
|
|
947 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
948 ngx_http_upstream_finalize_request(r, u,
|
|
949 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
950 return;
|
|
951 }
|
|
952 }
|
|
953
|
491
|
954 if (!u->cacheable) {
|
|
955 ngx_http_upstream_finalize_request(r, u,
|
|
956 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
957 }
|
495
|
958
|
76
|
959 return;
|
|
960 }
|
|
961
|
28
|
962 #if (NGX_HAVE_KQUEUE)
|
|
963
|
|
964 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
965
|
|
966 if (!ev->pending_eof) {
|
|
967 return;
|
|
968 }
|
|
969
|
|
970 ev->eof = 1;
|
132
|
971 c->error = 1;
|
28
|
972
|
|
973 if (ev->kq_errno) {
|
|
974 ev->error = 1;
|
|
975 }
|
|
976
|
491
|
977 if (!u->cacheable && u->peer.connection) {
|
28
|
978 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
76
|
979 "kevent() reported that client closed prematurely "
|
|
980 "connection, so upstream connection is closed too");
|
28
|
981 ngx_http_upstream_finalize_request(r, u,
|
|
982 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
983 return;
|
|
984 }
|
|
985
|
|
986 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
987 "kevent() reported that client closed "
|
|
988 "prematurely connection");
|
|
989
|
|
990 if (u->peer.connection == NULL) {
|
|
991 ngx_http_upstream_finalize_request(r, u,
|
|
992 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
993 }
|
|
994
|
|
995 return;
|
|
996 }
|
|
997
|
|
998 #endif
|
|
999
|
|
1000 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
1001
|
|
1002 err = ngx_socket_errno;
|
|
1003
|
286
|
1004 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
1005 "http upstream recv(): %d", n);
|
|
1006
|
28
|
1007 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
1008 return;
|
|
1009 }
|
|
1010
|
|
1011 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
495
|
1012
|
|
1013 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
1014
|
|
1015 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
28
|
1016 ngx_http_upstream_finalize_request(r, u,
|
|
1017 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1018 return;
|
|
1019 }
|
|
1020 }
|
|
1021
|
|
1022 if (n > 0) {
|
|
1023 return;
|
|
1024 }
|
|
1025
|
|
1026 if (n == -1) {
|
|
1027 if (err == NGX_EAGAIN) {
|
|
1028 return;
|
|
1029 }
|
|
1030
|
|
1031 ev->error = 1;
|
|
1032
|
32
|
1033 } else { /* n == 0 */
|
28
|
1034 err = 0;
|
|
1035 }
|
|
1036
|
78
|
1037 ev->eof = 1;
|
132
|
1038 c->error = 1;
|
78
|
1039
|
491
|
1040 if (!u->cacheable && u->peer.connection) {
|
28
|
1041 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
1042 "client closed prematurely connection, "
|
|
1043 "so upstream connection is closed too");
|
|
1044 ngx_http_upstream_finalize_request(r, u,
|
|
1045 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1046 return;
|
|
1047 }
|
|
1048
|
|
1049 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
1050 "client closed prematurely connection");
|
|
1051
|
|
1052 if (u->peer.connection == NULL) {
|
|
1053 ngx_http_upstream_finalize_request(r, u,
|
|
1054 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
1055 }
|
|
1056 }
|
|
1057
|
|
1058
|
36
|
1059 static void
|
|
1060 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1061 {
|
140
|
1062 ngx_int_t rc;
|
214
|
1063 ngx_time_t *tp;
|
140
|
1064 ngx_connection_t *c;
|
28
|
1065
|
32
|
1066 r->connection->log->action = "connecting to upstream";
|
28
|
1067
|
|
1068 r->connection->single_connection = 0;
|
|
1069
|
262
|
1070 if (u->state && u->state->response_sec) {
|
214
|
1071 tp = ngx_timeofday();
|
262
|
1072 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
1073 u->state->response_msec = tp->msec - u->state->response_msec;
|
214
|
1074 }
|
|
1075
|
296
|
1076 u->state = ngx_array_push(r->upstream_states);
|
214
|
1077 if (u->state == NULL) {
|
|
1078 ngx_http_upstream_finalize_request(r, u,
|
|
1079 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1080 return;
|
|
1081 }
|
|
1082
|
|
1083 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
1084
|
|
1085 tp = ngx_timeofday();
|
262
|
1086 u->state->response_sec = tp->sec;
|
|
1087 u->state->response_msec = tp->msec;
|
214
|
1088
|
28
|
1089 rc = ngx_event_connect_peer(&u->peer);
|
|
1090
|
|
1091 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
1092 "http upstream connect: %i", rc);
|
|
1093
|
|
1094 if (rc == NGX_ERROR) {
|
|
1095 ngx_http_upstream_finalize_request(r, u,
|
|
1096 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1097 return;
|
|
1098 }
|
|
1099
|
356
|
1100 u->state->peer = u->peer.name;
|
|
1101
|
92
|
1102 if (rc == NGX_BUSY) {
|
|
1103 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
326
|
1104 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
1105 return;
|
92
|
1106 }
|
|
1107
|
326
|
1108 if (rc == NGX_DECLINED) {
|
28
|
1109 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1110 return;
|
|
1111 }
|
|
1112
|
126
|
1113 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
1114
|
28
|
1115 c = u->peer.connection;
|
|
1116
|
|
1117 c->data = r;
|
140
|
1118
|
435
|
1119 c->write->handler = ngx_http_upstream_handler;
|
|
1120 c->read->handler = ngx_http_upstream_handler;
|
|
1121
|
|
1122 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
1123 u->read_event_handler = ngx_http_upstream_process_header;
|
28
|
1124
|
326
|
1125 c->sendfile &= r->connection->sendfile;
|
372
|
1126 u->output.sendfile = c->sendfile;
|
28
|
1127
|
|
1128 c->pool = r->pool;
|
501
|
1129 c->log = r->connection->log;
|
|
1130 c->read->log = c->log;
|
|
1131 c->write->log = c->log;
|
28
|
1132
|
|
1133 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
1134
|
|
1135 u->writer.out = NULL;
|
|
1136 u->writer.last = &u->writer.out;
|
|
1137 u->writer.connection = c;
|
|
1138 u->writer.limit = 0;
|
|
1139
|
|
1140 if (u->request_sent) {
|
58
|
1141 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
1142 ngx_http_upstream_finalize_request(r, u,
|
|
1143 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1144 return;
|
|
1145 }
|
28
|
1146 }
|
|
1147
|
276
|
1148 if (r->request_body
|
|
1149 && r->request_body->buf
|
|
1150 && r->request_body->temp_file
|
|
1151 && r == r->main)
|
|
1152 {
|
122
|
1153 /*
|
|
1154 * the r->request_body->buf can be reused for one request only,
|
|
1155 * the subrequests should allocate their own temporay bufs
|
|
1156 */
|
|
1157
|
|
1158 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
1159 if (u->output.free == NULL) {
|
|
1160 ngx_http_upstream_finalize_request(r, u,
|
|
1161 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1162 return;
|
28
|
1163 }
|
122
|
1164
|
|
1165 u->output.free->buf = r->request_body->buf;
|
|
1166 u->output.free->next = NULL;
|
|
1167 u->output.allocated = 1;
|
|
1168
|
|
1169 r->request_body->buf->pos = r->request_body->buf->start;
|
|
1170 r->request_body->buf->last = r->request_body->buf->start;
|
|
1171 r->request_body->buf->tag = u->output.tag;
|
28
|
1172 }
|
|
1173
|
|
1174 u->request_sent = 0;
|
|
1175
|
|
1176 if (rc == NGX_AGAIN) {
|
|
1177 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
1178 return;
|
|
1179 }
|
|
1180
|
126
|
1181 #if (NGX_HTTP_SSL)
|
|
1182
|
348
|
1183 if (u->ssl && c->ssl == NULL) {
|
140
|
1184 ngx_http_upstream_ssl_init_connection(r, u, c);
|
126
|
1185 return;
|
|
1186 }
|
|
1187
|
|
1188 #endif
|
|
1189
|
28
|
1190 ngx_http_upstream_send_request(r, u);
|
|
1191 }
|
|
1192
|
|
1193
|
126
|
1194 #if (NGX_HTTP_SSL)
|
|
1195
|
|
1196 static void
|
140
|
1197 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
1198 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
1199 {
|
260
|
1200 ngx_int_t rc;
|
140
|
1201
|
|
1202 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
1203 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
463
|
1204 != NGX_OK)
|
140
|
1205 {
|
|
1206 ngx_http_upstream_finalize_request(r, u,
|
|
1207 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1208 return;
|
|
1209 }
|
|
1210
|
|
1211 c->sendfile = 0;
|
168
|
1212 u->output.sendfile = 0;
|
140
|
1213
|
403
|
1214 if (u->conf->ssl_session_reuse) {
|
|
1215 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
1216 ngx_http_upstream_finalize_request(r, u,
|
|
1217 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1218 return;
|
|
1219 }
|
140
|
1220 }
|
|
1221
|
190
|
1222 r->connection->log->action = "SSL handshaking to upstream";
|
|
1223
|
140
|
1224 rc = ngx_ssl_handshake(c);
|
|
1225
|
|
1226 if (rc == NGX_AGAIN) {
|
|
1227 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
1228 return;
|
|
1229 }
|
|
1230
|
|
1231 ngx_http_upstream_ssl_handshake(c);
|
|
1232 }
|
|
1233
|
|
1234
|
|
1235 static void
|
126
|
1236 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
1237 {
|
|
1238 ngx_http_request_t *r;
|
|
1239 ngx_http_upstream_t *u;
|
|
1240
|
|
1241 r = c->data;
|
|
1242 u = r->upstream;
|
|
1243
|
|
1244 if (c->ssl->handshaked) {
|
|
1245
|
403
|
1246 if (u->conf->ssl_session_reuse) {
|
|
1247 u->peer.save_session(&u->peer, u->peer.data);
|
|
1248 }
|
260
|
1249
|
435
|
1250 c->write->handler = ngx_http_upstream_handler;
|
|
1251 c->read->handler = ngx_http_upstream_handler;
|
126
|
1252
|
|
1253 ngx_http_upstream_send_request(r, u);
|
|
1254
|
|
1255 return;
|
|
1256 }
|
|
1257
|
|
1258 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1259
|
|
1260 }
|
|
1261
|
|
1262 #endif
|
|
1263
|
|
1264
|
58
|
1265 static ngx_int_t
|
36
|
1266 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1267 {
|
|
1268 ngx_chain_t *cl;
|
|
1269
|
58
|
1270 if (u->reinit_request(r) != NGX_OK) {
|
|
1271 return NGX_ERROR;
|
|
1272 }
|
|
1273
|
356
|
1274 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
1275
|
|
1276 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
140
|
1277 sizeof(ngx_table_elt_t))
|
|
1278 != NGX_OK)
|
58
|
1279 {
|
|
1280 return NGX_ERROR;
|
28
|
1281 }
|
|
1282
|
|
1283 /* reinit the request chain */
|
126
|
1284
|
58
|
1285 for (cl = u->request_bufs; cl; cl = cl->next) {
|
28
|
1286 cl->buf->pos = cl->buf->start;
|
|
1287 cl->buf->file_pos = 0;
|
|
1288 }
|
|
1289
|
58
|
1290 /* reinit the subrequest's ngx_output_chain() context */
|
|
1291
|
122
|
1292 if (r->request_body && r->request_body->temp_file
|
146
|
1293 && r != r->main && u->output.buf)
|
122
|
1294 {
|
|
1295 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
1296 if (u->output.free == NULL) {
|
|
1297 return NGX_ERROR;
|
58
|
1298 }
|
122
|
1299
|
|
1300 u->output.free->buf = u->output.buf;
|
|
1301 u->output.free->next = NULL;
|
|
1302
|
|
1303 u->output.buf->pos = u->output.buf->start;
|
|
1304 u->output.buf->last = u->output.buf->start;
|
58
|
1305 }
|
28
|
1306
|
|
1307 u->output.buf = NULL;
|
|
1308 u->output.in = NULL;
|
|
1309 u->output.busy = NULL;
|
126
|
1310
|
130
|
1311 /* reinit u->buffer */
|
126
|
1312
|
473
|
1313 u->buffer.pos = u->buffer.start;
|
|
1314
|
|
1315 #if (NGX_HTTP_CACHE)
|
|
1316
|
|
1317 if (r->cache) {
|
|
1318 u->buffer.pos += r->cache->header_start;
|
28
|
1319 }
|
58
|
1320
|
28
|
1321 #endif
|
|
1322
|
473
|
1323 u->buffer.last = u->buffer.pos;
|
|
1324
|
58
|
1325 return NGX_OK;
|
28
|
1326 }
|
|
1327
|
|
1328
|
36
|
1329 static void
|
|
1330 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1331 {
|
294
|
1332 ngx_int_t rc;
|
32
|
1333 ngx_connection_t *c;
|
126
|
1334
|
28
|
1335 c = u->peer.connection;
|
|
1336
|
|
1337 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1338 "http upstream send request");
|
|
1339
|
294
|
1340 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1341 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1342 return;
|
28
|
1343 }
|
|
1344
|
32
|
1345 c->log->action = "sending request to upstream";
|
28
|
1346
|
58
|
1347 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
28
|
1348
|
|
1349 u->request_sent = 1;
|
|
1350
|
|
1351 if (rc == NGX_ERROR) {
|
|
1352 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
1353 return;
|
|
1354 }
|
|
1355
|
|
1356 if (c->write->timer_set) {
|
|
1357 ngx_del_timer(c->write);
|
|
1358 }
|
|
1359
|
|
1360 if (rc == NGX_AGAIN) {
|
|
1361 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
1362
|
439
|
1363 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
28
|
1364 ngx_http_upstream_finalize_request(r, u,
|
|
1365 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1366 return;
|
|
1367 }
|
|
1368
|
|
1369 return;
|
|
1370 }
|
|
1371
|
|
1372 /* rc == NGX_OK */
|
|
1373
|
|
1374 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
1375 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
1376 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
1377 ngx_tcp_push_n " failed");
|
|
1378 ngx_http_upstream_finalize_request(r, u,
|
|
1379 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
126
|
1380 return;
|
28
|
1381 }
|
|
1382
|
|
1383 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
1384 }
|
126
|
1385
|
28
|
1386 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
1387
|
|
1388 #if 1
|
|
1389 if (c->read->ready) {
|
126
|
1390
|
28
|
1391 /* post aio operation */
|
|
1392
|
|
1393 /*
|
|
1394 * TODO comment
|
|
1395 * although we can post aio operation just in the end
|
|
1396 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
1397 * it's better to do here because we postpone header buffer allocation
|
|
1398 */
|
|
1399
|
439
|
1400 ngx_http_upstream_process_header(r, u);
|
28
|
1401 return;
|
|
1402 }
|
|
1403 #endif
|
|
1404
|
435
|
1405 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
28
|
1406
|
439
|
1407 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
28
|
1408 ngx_http_upstream_finalize_request(r, u,
|
|
1409 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1410 return;
|
|
1411 }
|
|
1412 }
|
|
1413
|
|
1414
|
36
|
1415 static void
|
439
|
1416 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
1417 ngx_http_upstream_t *u)
|
28
|
1418 {
|
439
|
1419 ngx_connection_t *c;
|
|
1420
|
|
1421 c = u->peer.connection;
|
|
1422
|
|
1423 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
1424 "http upstream send request handler");
|
|
1425
|
439
|
1426 if (c->write->timedout) {
|
28
|
1427 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1428 return;
|
|
1429 }
|
|
1430
|
140
|
1431 #if (NGX_HTTP_SSL)
|
|
1432
|
348
|
1433 if (u->ssl && c->ssl == NULL) {
|
140
|
1434 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
1435 return;
|
|
1436 }
|
|
1437
|
|
1438 #endif
|
|
1439
|
200
|
1440 if (u->header_sent) {
|
435
|
1441 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
200
|
1442
|
439
|
1443 (void) ngx_handle_write_event(c->write, 0);
|
200
|
1444
|
|
1445 return;
|
|
1446 }
|
|
1447
|
28
|
1448 ngx_http_upstream_send_request(r, u);
|
|
1449 }
|
|
1450
|
|
1451
|
36
|
1452 static void
|
439
|
1453 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
1454 {
|
473
|
1455 ssize_t n;
|
|
1456 ngx_int_t rc;
|
|
1457 ngx_connection_t *c;
|
28
|
1458
|
439
|
1459 c = u->peer.connection;
|
|
1460
|
|
1461 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
32
|
1462 "http upstream process header");
|
28
|
1463
|
32
|
1464 c->log->action = "reading response header from upstream";
|
28
|
1465
|
439
|
1466 if (c->read->timedout) {
|
28
|
1467 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
1468 return;
|
|
1469 }
|
126
|
1470
|
294
|
1471 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
296
|
1472 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
294
|
1473 return;
|
|
1474 }
|
|
1475
|
130
|
1476 if (u->buffer.start == NULL) {
|
|
1477 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
1478 if (u->buffer.start == NULL) {
|
28
|
1479 ngx_http_upstream_finalize_request(r, u,
|
|
1480 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1481 return;
|
|
1482 }
|
|
1483
|
130
|
1484 u->buffer.pos = u->buffer.start;
|
|
1485 u->buffer.last = u->buffer.start;
|
|
1486 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
1487 u->buffer.temporary = 1;
|
|
1488
|
|
1489 u->buffer.tag = u->output.tag;
|
28
|
1490
|
356
|
1491 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
130
|
1492 sizeof(ngx_table_elt_t))
|
|
1493 != NGX_OK)
|
58
|
1494 {
|
|
1495 ngx_http_upstream_finalize_request(r, u,
|
|
1496 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1497 return;
|
|
1498 }
|
|
1499
|
473
|
1500 #if (NGX_HTTP_CACHE)
|
|
1501
|
|
1502 if (r->cache) {
|
|
1503 u->buffer.pos += r->cache->header_start;
|
130
|
1504 u->buffer.last = u->buffer.pos;
|
28
|
1505 }
|
|
1506 #endif
|
|
1507 }
|
|
1508
|
433
|
1509 for ( ;; ) {
|
|
1510
|
|
1511 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
1512
|
|
1513 if (n == NGX_AGAIN) {
|
28
|
1514 #if 0
|
433
|
1515 ngx_add_timer(rev, u->read_timeout);
|
28
|
1516 #endif
|
|
1517
|
439
|
1518 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
433
|
1519 ngx_http_upstream_finalize_request(r, u,
|
28
|
1520 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
433
|
1521 return;
|
|
1522 }
|
|
1523
|
|
1524 return;
|
|
1525 }
|
|
1526
|
|
1527 if (n == 0) {
|
439
|
1528 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
433
|
1529 "upstream prematurely closed connection");
|
|
1530 }
|
|
1531
|
|
1532 if (n == NGX_ERROR || n == 0) {
|
|
1533 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
28
|
1534 return;
|
|
1535 }
|
|
1536
|
433
|
1537 u->buffer.last += n;
|
28
|
1538
|
|
1539 #if 0
|
433
|
1540 u->valid_header_in = 0;
|
|
1541
|
|
1542 u->peer.cached = 0;
|
28
|
1543 #endif
|
|
1544
|
433
|
1545 rc = u->process_header(r);
|
|
1546
|
|
1547 if (rc == NGX_AGAIN) {
|
|
1548
|
|
1549 if (u->buffer.pos == u->buffer.end) {
|
439
|
1550 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
433
|
1551 "upstream sent too big header");
|
|
1552
|
|
1553 ngx_http_upstream_next(r, u,
|
|
1554 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1555 return;
|
|
1556 }
|
|
1557
|
|
1558 continue;
|
28
|
1559 }
|
|
1560
|
433
|
1561 break;
|
28
|
1562 }
|
|
1563
|
|
1564 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
1565 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
1566 return;
|
|
1567 }
|
|
1568
|
356
|
1569 if (rc == NGX_ERROR) {
|
28
|
1570 ngx_http_upstream_finalize_request(r, u,
|
|
1571 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1572 return;
|
|
1573 }
|
|
1574
|
|
1575 /* rc == NGX_OK */
|
|
1576
|
570
|
1577 if (u->headers_in.status_n > NGX_HTTP_SPECIAL_RESPONSE) {
|
420
|
1578
|
|
1579 if (r->subrequest_in_memory) {
|
|
1580 u->buffer.last = u->buffer.pos;
|
58
|
1581 }
|
|
1582
|
420
|
1583 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
146
|
1584 return;
|
|
1585 }
|
|
1586
|
420
|
1587 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
146
|
1588 return;
|
|
1589 }
|
58
|
1590 }
|
|
1591
|
473
|
1592 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
64
|
1593 return;
|
|
1594 }
|
|
1595
|
248
|
1596 if (!r->subrequest_in_memory) {
|
|
1597 ngx_http_upstream_send_response(r, u);
|
|
1598 return;
|
|
1599 }
|
|
1600
|
|
1601 /* subrequest content in memory */
|
|
1602
|
|
1603 if (u->input_filter == NULL) {
|
|
1604 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
1605 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
1606 u->input_filter_ctx = r;
|
|
1607 }
|
|
1608
|
|
1609 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
1610 ngx_http_upstream_finalize_request(r, u,
|
|
1611 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1612 return;
|
|
1613 }
|
|
1614
|
429
|
1615 n = u->buffer.last - u->buffer.pos;
|
|
1616
|
|
1617 if (n) {
|
|
1618 u->buffer.last -= n;
|
|
1619
|
439
|
1620 u->state->response_length += n;
|
|
1621
|
429
|
1622 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
248
|
1623 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1624 return;
|
|
1625 }
|
|
1626
|
429
|
1627 if (u->length == 0) {
|
|
1628 ngx_http_upstream_finalize_request(r, u, 0);
|
|
1629 return;
|
|
1630 }
|
248
|
1631 }
|
|
1632
|
435
|
1633 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
248
|
1634
|
439
|
1635 ngx_http_upstream_process_body_in_memory(r, u);
|
248
|
1636 }
|
|
1637
|
|
1638
|
294
|
1639 static ngx_int_t
|
420
|
1640 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1641 {
|
|
1642 ngx_uint_t status;
|
|
1643 ngx_http_upstream_next_t *un;
|
|
1644
|
|
1645 status = u->headers_in.status_n;
|
|
1646
|
|
1647 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
1648
|
|
1649 if (status != un->status) {
|
|
1650 continue;
|
|
1651 }
|
|
1652
|
|
1653 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
1654 ngx_http_upstream_next(r, u, un->mask);
|
|
1655 return NGX_OK;
|
|
1656 }
|
|
1657
|
|
1658 #if (NGX_HTTP_CACHE)
|
|
1659
|
511
|
1660 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
1661 && (u->conf->cache_use_stale & un->mask))
|
|
1662 {
|
497
|
1663 ngx_int_t rc;
|
495
|
1664
|
|
1665 rc = u->reinit_request(r);
|
|
1666
|
|
1667 if (rc == NGX_OK) {
|
511
|
1668 u->cache_status = NGX_HTTP_CACHE_STALE;
|
495
|
1669 rc = ngx_http_upstream_cache_send(r, u);
|
|
1670 }
|
|
1671
|
|
1672 ngx_http_upstream_finalize_request(r, u, rc);
|
420
|
1673 return NGX_OK;
|
|
1674 }
|
|
1675
|
|
1676 #endif
|
|
1677 }
|
|
1678
|
|
1679 return NGX_DECLINED;
|
|
1680 }
|
|
1681
|
|
1682
|
|
1683 static ngx_int_t
|
|
1684 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
1685 ngx_http_upstream_t *u)
|
|
1686 {
|
|
1687 ngx_int_t status;
|
|
1688 ngx_uint_t i;
|
|
1689 ngx_table_elt_t *h;
|
|
1690 ngx_http_err_page_t *err_page;
|
|
1691 ngx_http_core_loc_conf_t *clcf;
|
|
1692
|
447
|
1693 status = u->headers_in.status_n;
|
|
1694
|
|
1695 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
1696 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
1697 return NGX_OK;
|
|
1698 }
|
|
1699
|
420
|
1700 if (!u->conf->intercept_errors) {
|
|
1701 return NGX_DECLINED;
|
|
1702 }
|
|
1703
|
|
1704 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
1705
|
|
1706 if (clcf->error_pages == NULL) {
|
|
1707 return NGX_DECLINED;
|
|
1708 }
|
|
1709
|
|
1710 err_page = clcf->error_pages->elts;
|
|
1711 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
1712
|
|
1713 if (err_page[i].status == status) {
|
|
1714
|
511
|
1715 if (status == NGX_HTTP_UNAUTHORIZED
|
|
1716 && u->headers_in.www_authenticate)
|
|
1717 {
|
420
|
1718 h = ngx_list_push(&r->headers_out.headers);
|
|
1719
|
|
1720 if (h == NULL) {
|
|
1721 ngx_http_upstream_finalize_request(r, u,
|
|
1722 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1723 return NGX_OK;
|
|
1724 }
|
|
1725
|
|
1726 *h = *u->headers_in.www_authenticate;
|
|
1727
|
|
1728 r->headers_out.www_authenticate = h;
|
|
1729 }
|
|
1730
|
603
|
1731 #if (NGX_HTTP_CACHE)
|
|
1732
|
|
1733 if (r->cache) {
|
|
1734 time_t valid;
|
|
1735
|
|
1736 valid = ngx_http_file_cache_valid(u->conf->cache_valid, status);
|
|
1737
|
|
1738 if (valid) {
|
|
1739 r->cache->valid_sec = ngx_time() + valid;
|
|
1740 r->cache->error = status;
|
|
1741 }
|
|
1742
|
|
1743 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
|
1744 }
|
|
1745 #endif
|
420
|
1746 ngx_http_upstream_finalize_request(r, u, status);
|
|
1747
|
|
1748 return NGX_OK;
|
|
1749 }
|
|
1750 }
|
|
1751
|
|
1752 return NGX_DECLINED;
|
|
1753 }
|
|
1754
|
|
1755
|
|
1756 static ngx_int_t
|
294
|
1757 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
1758 {
|
|
1759 int err;
|
|
1760 socklen_t len;
|
|
1761
|
|
1762 #if (NGX_HAVE_KQUEUE)
|
|
1763
|
|
1764 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
296
|
1765 if (c->write->pending_eof) {
|
336
|
1766 c->log->action = "connecting to upstream";
|
296
|
1767 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
1768 "kevent() reported that connect() failed");
|
|
1769 return NGX_ERROR;
|
|
1770 }
|
294
|
1771
|
|
1772 } else
|
|
1773 #endif
|
|
1774 {
|
296
|
1775 err = 0;
|
|
1776 len = sizeof(int);
|
|
1777
|
|
1778 /*
|
|
1779 * BSDs and Linux return 0 and set a pending error in err
|
|
1780 * Solaris returns -1 and sets errno
|
|
1781 */
|
|
1782
|
|
1783 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
1784 == -1)
|
|
1785 {
|
|
1786 err = ngx_errno;
|
|
1787 }
|
|
1788
|
|
1789 if (err) {
|
336
|
1790 c->log->action = "connecting to upstream";
|
296
|
1791 (void) ngx_connection_error(c, err, "connect() failed");
|
|
1792 return NGX_ERROR;
|
|
1793 }
|
294
|
1794 }
|
|
1795
|
|
1796 return NGX_OK;
|
|
1797 }
|
|
1798
|
|
1799
|
473
|
1800 static ngx_int_t
|
|
1801 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
1802 {
|
|
1803 ngx_str_t *uri, args;
|
|
1804 ngx_uint_t i, flags;
|
|
1805 ngx_list_part_t *part;
|
|
1806 ngx_table_elt_t *h;
|
|
1807 ngx_http_upstream_header_t *hh;
|
|
1808 ngx_http_upstream_main_conf_t *umcf;
|
|
1809
|
|
1810 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
1811
|
493
|
1812 if (u->headers_in.x_accel_redirect
|
|
1813 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
1814 {
|
473
|
1815 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
1816
|
|
1817 part = &u->headers_in.headers.part;
|
|
1818 h = part->elts;
|
|
1819
|
|
1820 for (i = 0; /* void */; i++) {
|
|
1821
|
|
1822 if (i >= part->nelts) {
|
|
1823 if (part->next == NULL) {
|
|
1824 break;
|
|
1825 }
|
|
1826
|
|
1827 part = part->next;
|
|
1828 h = part->elts;
|
|
1829 i = 0;
|
|
1830 }
|
|
1831
|
|
1832 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1833 h[i].lowcase_key, h[i].key.len);
|
|
1834
|
|
1835 if (hh && hh->redirect) {
|
|
1836 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1837 ngx_http_finalize_request(r,
|
|
1838 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1839 return NGX_DONE;
|
|
1840 }
|
|
1841 }
|
|
1842 }
|
|
1843
|
|
1844 uri = &u->headers_in.x_accel_redirect->value;
|
583
|
1845 ngx_str_null(&args);
|
542
|
1846 flags = NGX_HTTP_LOG_UNSAFE;
|
473
|
1847
|
|
1848 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
1849 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
1850 return NGX_DONE;
|
|
1851 }
|
|
1852
|
|
1853 if (r->method != NGX_HTTP_HEAD) {
|
|
1854 r->method = NGX_HTTP_GET;
|
|
1855 }
|
|
1856
|
|
1857 r->valid_unparsed_uri = 0;
|
|
1858
|
|
1859 ngx_http_internal_redirect(r, uri, &args);
|
537
|
1860 ngx_http_finalize_request(r, NGX_DONE);
|
473
|
1861 return NGX_DONE;
|
|
1862 }
|
|
1863
|
|
1864 part = &u->headers_in.headers.part;
|
|
1865 h = part->elts;
|
|
1866
|
|
1867 for (i = 0; /* void */; i++) {
|
|
1868
|
|
1869 if (i >= part->nelts) {
|
|
1870 if (part->next == NULL) {
|
|
1871 break;
|
|
1872 }
|
|
1873
|
|
1874 part = part->next;
|
|
1875 h = part->elts;
|
|
1876 i = 0;
|
|
1877 }
|
|
1878
|
|
1879 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
1880 h[i].lowcase_key, h[i].key.len))
|
|
1881 {
|
|
1882 continue;
|
|
1883 }
|
|
1884
|
|
1885 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
1886 h[i].lowcase_key, h[i].key.len);
|
|
1887
|
|
1888 if (hh) {
|
|
1889 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
1890 ngx_http_upstream_finalize_request(r, u,
|
|
1891 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1892 return NGX_DONE;
|
|
1893 }
|
|
1894
|
|
1895 continue;
|
|
1896 }
|
|
1897
|
|
1898 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
1899 ngx_http_upstream_finalize_request(r, u,
|
|
1900 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
1901 return NGX_DONE;
|
|
1902 }
|
|
1903 }
|
|
1904
|
|
1905 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
1906 r->headers_out.server->hash = 0;
|
|
1907 }
|
|
1908
|
|
1909 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
1910 r->headers_out.date->hash = 0;
|
|
1911 }
|
|
1912
|
|
1913 r->headers_out.status = u->headers_in.status_n;
|
|
1914 r->headers_out.status_line = u->headers_in.status_line;
|
|
1915
|
|
1916 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
1917
|
|
1918 if (r->headers_out.content_length_n != -1) {
|
|
1919 u->length = (size_t) r->headers_out.content_length_n;
|
|
1920
|
|
1921 } else {
|
|
1922 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
1923 }
|
|
1924
|
|
1925 return NGX_OK;
|
|
1926 }
|
|
1927
|
|
1928
|
248
|
1929 static void
|
439
|
1930 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
1931 ngx_http_upstream_t *u)
|
248
|
1932 {
|
439
|
1933 size_t size;
|
|
1934 ssize_t n;
|
|
1935 ngx_buf_t *b;
|
|
1936 ngx_event_t *rev;
|
|
1937 ngx_connection_t *c;
|
|
1938
|
|
1939 c = u->peer.connection;
|
|
1940 rev = c->read;
|
248
|
1941
|
|
1942 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
1943 "http upstream process body on memory");
|
|
1944
|
|
1945 if (rev->timedout) {
|
|
1946 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
1947 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
1948 return;
|
|
1949 }
|
|
1950
|
|
1951 b = &u->buffer;
|
|
1952
|
|
1953 for ( ;; ) {
|
|
1954
|
|
1955 size = b->end - b->last;
|
|
1956
|
|
1957 if (size == 0) {
|
|
1958 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
603
|
1959 "upstream buffer is too small to read response");
|
248
|
1960 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1961 return;
|
|
1962 }
|
|
1963
|
|
1964 n = c->recv(c, b->last, size);
|
|
1965
|
|
1966 if (n == NGX_AGAIN) {
|
|
1967 break;
|
|
1968 }
|
|
1969
|
|
1970 if (n == 0 || n == NGX_ERROR) {
|
|
1971 ngx_http_upstream_finalize_request(r, u, n);
|
|
1972 return;
|
|
1973 }
|
|
1974
|
439
|
1975 u->state->response_length += n;
|
|
1976
|
248
|
1977 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
1978 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1979 return;
|
|
1980 }
|
|
1981
|
|
1982 if (!rev->ready) {
|
|
1983 break;
|
|
1984 }
|
|
1985 }
|
|
1986
|
439
|
1987 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
248
|
1988 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
1989 return;
|
|
1990 }
|
|
1991
|
|
1992 if (rev->active) {
|
|
1993 ngx_add_timer(rev, u->conf->read_timeout);
|
|
1994
|
|
1995 } else if (rev->timer_set) {
|
|
1996 ngx_del_timer(rev);
|
|
1997 }
|
230
|
1998 }
|
|
1999
|
|
2000
|
|
2001 static void
|
|
2002 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
2003 {
|
|
2004 int tcp_nodelay;
|
439
|
2005 ssize_t n;
|
230
|
2006 ngx_int_t rc;
|
|
2007 ngx_event_pipe_t *p;
|
|
2008 ngx_connection_t *c;
|
|
2009 ngx_http_core_loc_conf_t *clcf;
|
|
2010
|
58
|
2011 rc = ngx_http_send_header(r);
|
28
|
2012
|
489
|
2013 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
34
|
2014 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
2015 return;
|
|
2016 }
|
|
2017
|
489
|
2018 c = r->connection;
|
|
2019
|
|
2020 if (r->header_only) {
|
|
2021
|
|
2022 if (u->cacheable || u->store) {
|
|
2023
|
|
2024 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
2025 ngx_connection_error(c, ngx_socket_errno,
|
|
2026 ngx_shutdown_socket_n " failed");
|
|
2027 }
|
|
2028
|
|
2029 r->read_event_handler = ngx_http_request_empty_handler;
|
|
2030 r->write_event_handler = ngx_http_request_empty_handler;
|
|
2031 c->error = 1;
|
|
2032
|
|
2033 } else {
|
|
2034 ngx_http_upstream_finalize_request(r, u, rc);
|
|
2035 return;
|
|
2036 }
|
|
2037 }
|
|
2038
|
28
|
2039 u->header_sent = 1;
|
|
2040
|
122
|
2041 if (r->request_body && r->request_body->temp_file) {
|
473
|
2042 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
2043 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
112
|
2044 }
|
|
2045
|
130
|
2046 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2047
|
198
|
2048 if (!u->buffering) {
|
130
|
2049
|
|
2050 if (u->input_filter == NULL) {
|
|
2051 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
2052 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
2053 u->input_filter_ctx = r;
|
|
2054 }
|
|
2055
|
437
|
2056 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
130
|
2057 r->write_event_handler =
|
|
2058 ngx_http_upstream_process_non_buffered_downstream;
|
|
2059
|
|
2060 r->limit_rate = 0;
|
|
2061
|
|
2062 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
2063 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2064 return;
|
|
2065 }
|
|
2066
|
132
|
2067 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
2068 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
2069
|
|
2070 tcp_nodelay = 1;
|
|
2071
|
|
2072 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
2073 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
2074 {
|
|
2075 ngx_connection_error(c, ngx_socket_errno,
|
|
2076 "setsockopt(TCP_NODELAY) failed");
|
|
2077 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2078 return;
|
|
2079 }
|
|
2080
|
|
2081 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
2082 }
|
|
2083
|
439
|
2084 n = u->buffer.last - u->buffer.pos;
|
|
2085
|
|
2086 if (n) {
|
130
|
2087 u->buffer.last = u->buffer.pos;
|
|
2088
|
439
|
2089 u->state->response_length += n;
|
|
2090
|
|
2091 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
130
|
2092 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2093 return;
|
|
2094 }
|
|
2095
|
437
|
2096 ngx_http_upstream_process_non_buffered_downstream(r);
|
130
|
2097
|
|
2098 } else {
|
|
2099 u->buffer.pos = u->buffer.start;
|
|
2100 u->buffer.last = u->buffer.start;
|
|
2101
|
|
2102 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
2103 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2104 return;
|
|
2105 }
|
336
|
2106
|
|
2107 if (u->peer.connection->read->ready) {
|
439
|
2108 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
336
|
2109 }
|
130
|
2110 }
|
|
2111
|
|
2112 return;
|
|
2113 }
|
|
2114
|
28
|
2115 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
2116
|
473
|
2117 #if (NGX_HTTP_CACHE)
|
|
2118
|
|
2119 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
2120 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
2121 r->cache->file.fd = NGX_INVALID_FILE;
|
28
|
2122 }
|
|
2123
|
601
|
2124 switch (ngx_http_test_predicates(r, u->conf->no_cache)) {
|
|
2125
|
|
2126 case NGX_ERROR:
|
|
2127 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2128 return;
|
|
2129
|
|
2130 case NGX_DECLINED:
|
|
2131 u->cacheable = 0;
|
|
2132 break;
|
|
2133
|
|
2134 default: /* NGX_OK */
|
|
2135
|
|
2136 if (u->cache_status == NGX_HTTP_CACHE_BYPASS) {
|
|
2137
|
|
2138 if (ngx_http_file_cache_new(r) != NGX_OK) {
|
|
2139 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2140 return;
|
|
2141 }
|
|
2142
|
|
2143 if (u->create_key(r) != NGX_OK) {
|
|
2144 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2145 return;
|
|
2146 }
|
|
2147
|
|
2148 /* TODO: add keys */
|
|
2149
|
|
2150 r->cache->min_uses = u->conf->cache_min_uses;
|
|
2151 r->cache->body_start = u->conf->buffer_size;
|
|
2152 r->cache->file_cache = u->conf->cache->data;
|
|
2153
|
|
2154 if (ngx_http_file_cache_create(r) != NGX_OK) {
|
|
2155 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2156 return;
|
|
2157 }
|
|
2158
|
|
2159 u->cacheable = 1;
|
|
2160 }
|
|
2161
|
|
2162 break;
|
|
2163 }
|
|
2164
|
340
|
2165 if (u->cacheable) {
|
473
|
2166 time_t now, valid;
|
|
2167
|
481
|
2168 now = ngx_time();
|
|
2169
|
|
2170 valid = r->cache->valid_sec;
|
|
2171
|
|
2172 if (valid == 0) {
|
|
2173 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
2174 u->headers_in.status_n);
|
|
2175 if (valid) {
|
|
2176 r->cache->valid_sec = now + valid;
|
|
2177 }
|
|
2178 }
|
|
2179
|
473
|
2180 if (valid) {
|
|
2181 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
2182 r->cache->date = now;
|
|
2183 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
2184
|
|
2185 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
2186
|
|
2187 } else {
|
|
2188 u->cacheable = 0;
|
489
|
2189 r->headers_out.last_modified_time = -1;
|
473
|
2190 }
|
28
|
2191 }
|
|
2192
|
487
|
2193 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2194 "http cacheable: %d", u->cacheable);
|
|
2195
|
535
|
2196 if (u->cacheable == 0 && r->cache) {
|
603
|
2197 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
535
|
2198 }
|
|
2199
|
28
|
2200 #endif
|
|
2201
|
130
|
2202 p = u->pipe;
|
28
|
2203
|
|
2204 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
2205 p->output_ctx = r;
|
|
2206 p->tag = u->output.tag;
|
126
|
2207 p->bufs = u->conf->bufs;
|
28
|
2208 p->busy_size = u->conf->busy_buffers_size;
|
|
2209 p->upstream = u->peer.connection;
|
132
|
2210 p->downstream = c;
|
28
|
2211 p->pool = r->pool;
|
132
|
2212 p->log = c->log;
|
126
|
2213
|
340
|
2214 p->cacheable = u->cacheable || u->store;
|
28
|
2215
|
50
|
2216 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2217 if (p->temp_file == NULL) {
|
28
|
2218 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2219 return;
|
|
2220 }
|
|
2221
|
|
2222 p->temp_file->file.fd = NGX_INVALID_FILE;
|
132
|
2223 p->temp_file->file.log = c->log;
|
28
|
2224 p->temp_file->path = u->conf->temp_path;
|
|
2225 p->temp_file->pool = r->pool;
|
126
|
2226
|
473
|
2227 if (p->cacheable) {
|
28
|
2228 p->temp_file->persistent = 1;
|
318
|
2229
|
28
|
2230 } else {
|
216
|
2231 p->temp_file->log_level = NGX_LOG_WARN;
|
28
|
2232 p->temp_file->warn = "an upstream response is buffered "
|
|
2233 "to a temporary file";
|
|
2234 }
|
|
2235
|
|
2236 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
2237 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
2238
|
50
|
2239 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
2240 if (p->preread_bufs == NULL) {
|
28
|
2241 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2242 return;
|
|
2243 }
|
318
|
2244
|
130
|
2245 p->preread_bufs->buf = &u->buffer;
|
28
|
2246 p->preread_bufs->next = NULL;
|
130
|
2247 u->buffer.recycled = 1;
|
|
2248
|
|
2249 p->preread_size = u->buffer.last - u->buffer.pos;
|
28
|
2250
|
340
|
2251 if (u->cacheable) {
|
318
|
2252
|
28
|
2253 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
2254 if (p->buf_to_file == NULL) {
|
|
2255 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2256 return;
|
|
2257 }
|
318
|
2258
|
130
|
2259 p->buf_to_file->pos = u->buffer.start;
|
|
2260 p->buf_to_file->last = u->buffer.pos;
|
28
|
2261 p->buf_to_file->temporary = 1;
|
|
2262 }
|
|
2263
|
|
2264 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
2265 /* the posted aio operation may currupt a shadow buffer */
|
|
2266 p->single_buf = 1;
|
|
2267 }
|
|
2268
|
|
2269 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
2270 p->free_bufs = 1;
|
|
2271
|
|
2272 /*
|
130
|
2273 * event_pipe would do u->buffer.last += p->preread_size
|
28
|
2274 * as though these bytes were read
|
|
2275 */
|
130
|
2276 u->buffer.last = u->buffer.pos;
|
28
|
2277
|
|
2278 if (u->conf->cyclic_temp_file) {
|
|
2279
|
|
2280 /*
|
|
2281 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
2282 * because the writing a new data may interfere with sendfile()
|
|
2283 * that uses the same kernel file pages (at least on FreeBSD)
|
|
2284 */
|
|
2285
|
|
2286 p->cyclic_temp_file = 1;
|
132
|
2287 c->sendfile = 0;
|
28
|
2288
|
|
2289 } else {
|
|
2290 p->cyclic_temp_file = 0;
|
|
2291 }
|
|
2292
|
|
2293 p->read_timeout = u->conf->read_timeout;
|
|
2294 p->send_timeout = clcf->send_timeout;
|
|
2295 p->send_lowat = clcf->send_lowat;
|
|
2296
|
437
|
2297 u->read_event_handler = ngx_http_upstream_process_upstream;
|
58
|
2298 r->write_event_handler = ngx_http_upstream_process_downstream;
|
28
|
2299
|
439
|
2300 ngx_http_upstream_process_upstream(r, u);
|
28
|
2301 }
|
|
2302
|
|
2303
|
36
|
2304 static void
|
130
|
2305 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
2306 {
|
437
|
2307 ngx_event_t *wev;
|
|
2308 ngx_connection_t *c;
|
|
2309 ngx_http_upstream_t *u;
|
|
2310
|
|
2311 c = r->connection;
|
|
2312 u = r->upstream;
|
|
2313 wev = c->write;
|
|
2314
|
|
2315 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2316 "http upstream process non buffered downstream");
|
|
2317
|
|
2318 c->log->action = "sending to client";
|
|
2319
|
|
2320 if (wev->timedout) {
|
|
2321 c->timedout = 1;
|
|
2322 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
2323 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2324 return;
|
|
2325 }
|
|
2326
|
|
2327 ngx_http_upstream_process_non_buffered_request(r, 1);
|
130
|
2328 }
|
|
2329
|
|
2330
|
|
2331 static void
|
439
|
2332 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
2333 ngx_http_upstream_t *u)
|
437
|
2334 {
|
439
|
2335 ngx_connection_t *c;
|
|
2336
|
|
2337 c = u->peer.connection;
|
437
|
2338
|
|
2339 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2340 "http upstream process non buffered upstream");
|
|
2341
|
|
2342 c->log->action = "reading upstream";
|
|
2343
|
439
|
2344 if (c->read->timedout) {
|
437
|
2345 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2346 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2347 return;
|
|
2348 }
|
|
2349
|
|
2350 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
2351 }
|
|
2352
|
|
2353
|
|
2354 static void
|
|
2355 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
2356 ngx_uint_t do_write)
|
130
|
2357 {
|
|
2358 size_t size;
|
|
2359 ssize_t n;
|
|
2360 ngx_buf_t *b;
|
132
|
2361 ngx_int_t rc;
|
437
|
2362 ngx_connection_t *downstream, *upstream;
|
130
|
2363 ngx_http_upstream_t *u;
|
|
2364 ngx_http_core_loc_conf_t *clcf;
|
|
2365
|
244
|
2366 u = r->upstream;
|
260
|
2367 downstream = r->connection;
|
|
2368 upstream = u->peer.connection;
|
130
|
2369
|
|
2370 b = &u->buffer;
|
|
2371
|
437
|
2372 do_write = do_write || u->length == 0;
|
130
|
2373
|
|
2374 for ( ;; ) {
|
|
2375
|
|
2376 if (do_write) {
|
|
2377
|
|
2378 if (u->out_bufs || u->busy_bufs) {
|
132
|
2379 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
2380
|
|
2381 if (rc == NGX_ERROR) {
|
130
|
2382 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2383 return;
|
|
2384 }
|
|
2385
|
|
2386 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
2387 &u->out_bufs, u->output.tag);
|
|
2388 }
|
|
2389
|
|
2390 if (u->busy_bufs == NULL) {
|
|
2391
|
|
2392 if (u->length == 0
|
260
|
2393 || upstream->read->eof
|
|
2394 || upstream->read->error)
|
130
|
2395 {
|
|
2396 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2397 return;
|
|
2398 }
|
|
2399
|
|
2400 b->pos = b->start;
|
|
2401 b->last = b->start;
|
|
2402 }
|
|
2403 }
|
|
2404
|
|
2405 size = b->end - b->last;
|
|
2406
|
|
2407 if (size > u->length) {
|
|
2408 size = u->length;
|
|
2409 }
|
|
2410
|
260
|
2411 if (size && upstream->read->ready) {
|
|
2412
|
|
2413 n = upstream->recv(upstream, b->last, size);
|
130
|
2414
|
|
2415 if (n == NGX_AGAIN) {
|
|
2416 break;
|
|
2417 }
|
|
2418
|
|
2419 if (n > 0) {
|
439
|
2420 u->state->response_length += n;
|
|
2421
|
130
|
2422 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
2423 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2424 return;
|
|
2425 }
|
|
2426 }
|
|
2427
|
|
2428 do_write = 1;
|
|
2429
|
|
2430 continue;
|
|
2431 }
|
|
2432
|
|
2433 break;
|
|
2434 }
|
|
2435
|
437
|
2436 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
2437
|
260
|
2438 if (downstream->data == r) {
|
|
2439 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
435
|
2440 != NGX_OK)
|
132
|
2441 {
|
|
2442 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2443 return;
|
|
2444 }
|
130
|
2445 }
|
|
2446
|
276
|
2447 if (downstream->write->active && !downstream->write->ready) {
|
260
|
2448 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
2449
|
|
2450 } else if (downstream->write->timer_set) {
|
|
2451 ngx_del_timer(downstream->write);
|
130
|
2452 }
|
|
2453
|
435
|
2454 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
130
|
2455 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2456 return;
|
|
2457 }
|
|
2458
|
276
|
2459 if (upstream->read->active && !upstream->read->ready) {
|
260
|
2460 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
2461
|
|
2462 } else if (upstream->read->timer_set) {
|
|
2463 ngx_del_timer(upstream->read);
|
130
|
2464 }
|
|
2465 }
|
|
2466
|
|
2467
|
|
2468 static ngx_int_t
|
|
2469 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
2470 {
|
|
2471 return NGX_OK;
|
|
2472 }
|
|
2473
|
|
2474
|
|
2475 static ngx_int_t
|
|
2476 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
2477 {
|
|
2478 ngx_http_request_t *r = data;
|
|
2479
|
|
2480 ngx_buf_t *b;
|
|
2481 ngx_chain_t *cl, **ll;
|
|
2482 ngx_http_upstream_t *u;
|
|
2483
|
|
2484 u = r->upstream;
|
|
2485
|
|
2486 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
2487 ll = &cl->next;
|
|
2488 }
|
|
2489
|
|
2490 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
2491 if (cl == NULL) {
|
|
2492 return NGX_ERROR;
|
|
2493 }
|
|
2494
|
|
2495 *ll = cl;
|
|
2496
|
|
2497 cl->buf->flush = 1;
|
|
2498 cl->buf->memory = 1;
|
|
2499
|
|
2500 b = &u->buffer;
|
|
2501
|
|
2502 cl->buf->pos = b->last;
|
|
2503 b->last += bytes;
|
|
2504 cl->buf->last = b->last;
|
366
|
2505 cl->buf->tag = u->output.tag;
|
130
|
2506
|
|
2507 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
2508 return NGX_OK;
|
|
2509 }
|
|
2510
|
|
2511 u->length -= bytes;
|
|
2512
|
|
2513 return NGX_OK;
|
|
2514 }
|
|
2515
|
|
2516
|
|
2517 static void
|
58
|
2518 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
2519 {
|
437
|
2520 ngx_event_t *wev;
|
|
2521 ngx_connection_t *c;
|
58
|
2522 ngx_event_pipe_t *p;
|
28
|
2523 ngx_http_upstream_t *u;
|
|
2524
|
437
|
2525 c = r->connection;
|
28
|
2526 u = r->upstream;
|
130
|
2527 p = u->pipe;
|
437
|
2528 wev = c->write;
|
|
2529
|
|
2530 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2531 "http upstream process downstream");
|
|
2532
|
|
2533 c->log->action = "sending to client";
|
|
2534
|
|
2535 if (wev->timedout) {
|
|
2536
|
|
2537 if (wev->delayed) {
|
|
2538
|
|
2539 wev->timedout = 0;
|
|
2540 wev->delayed = 0;
|
|
2541
|
|
2542 if (!wev->ready) {
|
|
2543 ngx_add_timer(wev, p->send_timeout);
|
|
2544
|
|
2545 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
2546 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2547 }
|
|
2548
|
|
2549 return;
|
|
2550 }
|
|
2551
|
|
2552 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
2553 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2554 return;
|
76
|
2555 }
|
28
|
2556
|
|
2557 } else {
|
437
|
2558 p->downstream_error = 1;
|
|
2559 c->timedout = 1;
|
|
2560 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
28
|
2561 }
|
|
2562
|
|
2563 } else {
|
437
|
2564
|
|
2565 if (wev->delayed) {
|
|
2566
|
76
|
2567 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2568 "http downstream delayed");
|
|
2569
|
437
|
2570 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
435
|
2571 ngx_http_upstream_finalize_request(r, u, 0);
|
76
|
2572 }
|
|
2573
|
|
2574 return;
|
|
2575 }
|
|
2576
|
437
|
2577 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
28
|
2578 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2579 return;
|
|
2580 }
|
|
2581 }
|
126
|
2582
|
437
|
2583 ngx_http_upstream_process_request(r);
|
|
2584 }
|
|
2585
|
|
2586
|
|
2587 static void
|
439
|
2588 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
2589 ngx_http_upstream_t *u)
|
437
|
2590 {
|
439
|
2591 ngx_connection_t *c;
|
|
2592
|
|
2593 c = u->peer.connection;
|
437
|
2594
|
|
2595 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
2596 "http upstream process upstream");
|
|
2597
|
|
2598 c->log->action = "reading upstream";
|
|
2599
|
439
|
2600 if (c->read->timedout) {
|
|
2601 u->pipe->upstream_error = 1;
|
437
|
2602 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
2603
|
|
2604 } else {
|
439
|
2605 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
437
|
2606 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2607 return;
|
|
2608 }
|
|
2609 }
|
|
2610
|
|
2611 ngx_http_upstream_process_request(r);
|
|
2612 }
|
|
2613
|
|
2614
|
|
2615 static void
|
|
2616 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
2617 {
|
447
|
2618 ngx_uint_t del;
|
437
|
2619 ngx_temp_file_t *tf;
|
|
2620 ngx_event_pipe_t *p;
|
|
2621 ngx_http_upstream_t *u;
|
|
2622
|
|
2623 u = r->upstream;
|
|
2624 p = u->pipe;
|
|
2625
|
28
|
2626 if (u->peer.connection) {
|
|
2627
|
318
|
2628 if (u->store) {
|
|
2629
|
447
|
2630 del = p->upstream_error;
|
|
2631
|
364
|
2632 tf = u->pipe->temp_file;
|
|
2633
|
449
|
2634 if (p->upstream_eof || p->upstream_done) {
|
447
|
2635
|
|
2636 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
2637 && (u->headers_in.content_length_n == -1
|
|
2638 || (u->headers_in.content_length_n == tf->offset)))
|
|
2639 {
|
|
2640 ngx_http_upstream_store(r, u);
|
|
2641
|
|
2642 } else {
|
|
2643 del = 1;
|
|
2644 }
|
|
2645 }
|
|
2646
|
|
2647 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
2648
|
364
|
2649 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
2650
|
318
|
2651 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
2652 ngx_delete_file_n " \"%s\" failed",
|
|
2653 u->pipe->temp_file->file.name.data);
|
|
2654 }
|
|
2655 }
|
|
2656 }
|
|
2657
|
473
|
2658 #if (NGX_HTTP_CACHE)
|
|
2659
|
|
2660 if (u->cacheable) {
|
|
2661
|
|
2662 if (p->upstream_done) {
|
|
2663 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2664
|
|
2665 } else if (p->upstream_eof) {
|
|
2666
|
|
2667 /* TODO: check length & update cache */
|
|
2668
|
|
2669 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
2670
|
|
2671 } else if (p->upstream_error) {
|
603
|
2672 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
28
|
2673 }
|
|
2674 }
|
|
2675
|
|
2676 #endif
|
|
2677
|
|
2678 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
437
|
2679 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2680 "http upstream exit: %p", p->out);
|
28
|
2681 #if 0
|
|
2682 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2683 #endif
|
|
2684 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2685 return;
|
|
2686 }
|
|
2687 }
|
|
2688
|
|
2689 if (p->downstream_error) {
|
437
|
2690 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
32
|
2691 "http upstream downstream error");
|
28
|
2692
|
491
|
2693 if (!u->cacheable && !u->store && u->peer.connection) {
|
28
|
2694 ngx_http_upstream_finalize_request(r, u, 0);
|
|
2695 }
|
|
2696 }
|
|
2697 }
|
|
2698
|
|
2699
|
36
|
2700 static void
|
318
|
2701 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
2702 {
|
370
|
2703 size_t root;
|
|
2704 time_t lm;
|
|
2705 ngx_str_t path;
|
|
2706 ngx_temp_file_t *tf;
|
|
2707 ngx_ext_rename_file_t ext;
|
318
|
2708
|
358
|
2709 tf = u->pipe->temp_file;
|
|
2710
|
|
2711 if (tf->file.fd == NGX_INVALID_FILE) {
|
318
|
2712
|
|
2713 /* create file for empty 200 response */
|
|
2714
|
|
2715 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
2716 if (tf == NULL) {
|
|
2717 return;
|
|
2718 }
|
|
2719
|
|
2720 tf->file.fd = NGX_INVALID_FILE;
|
|
2721 tf->file.log = r->connection->log;
|
|
2722 tf->path = u->conf->temp_path;
|
|
2723 tf->pool = r->pool;
|
|
2724 tf->persistent = 1;
|
|
2725
|
|
2726 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
2727 tf->persistent, tf->clean, tf->access)
|
|
2728 != NGX_OK)
|
|
2729 {
|
|
2730 return;
|
|
2731 }
|
|
2732
|
|
2733 u->pipe->temp_file = tf;
|
|
2734 }
|
|
2735
|
370
|
2736 ext.access = u->conf->store_access;
|
439
|
2737 ext.path_access = u->conf->store_access;
|
370
|
2738 ext.time = -1;
|
|
2739 ext.create_path = 1;
|
|
2740 ext.delete_file = 1;
|
|
2741 ext.log = r->connection->log;
|
318
|
2742
|
356
|
2743 if (u->headers_in.last_modified) {
|
|
2744
|
370
|
2745 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
2746 u->headers_in.last_modified->value.len);
|
318
|
2747
|
|
2748 if (lm != NGX_ERROR) {
|
370
|
2749 ext.time = lm;
|
|
2750 ext.fd = tf->file.fd;
|
318
|
2751 }
|
|
2752 }
|
|
2753
|
320
|
2754 if (u->conf->store_lengths == NULL) {
|
|
2755
|
|
2756 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
2757
|
|
2758 } else {
|
|
2759 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
2760 u->conf->store_values->elts)
|
|
2761 == NULL)
|
|
2762 {
|
|
2763 return;
|
|
2764 }
|
|
2765 }
|
318
|
2766
|
527
|
2767 path.len--;
|
|
2768
|
318
|
2769 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
370
|
2770 "upstream stores \"%s\" to \"%s\"",
|
|
2771 tf->file.name.data, path.data);
|
|
2772
|
|
2773 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
318
|
2774 }
|
|
2775
|
|
2776
|
|
2777 static void
|
439
|
2778 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
28
|
2779 {
|
439
|
2780 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
28
|
2781 "http upstream dummy handler");
|
|
2782 }
|
|
2783
|
|
2784
|
36
|
2785 static void
|
|
2786 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
2787 ngx_uint_t ft_type)
|
28
|
2788 {
|
260
|
2789 ngx_uint_t status, state;
|
28
|
2790
|
|
2791 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
260
|
2792 "http next upstream, %xi", ft_type);
|
28
|
2793
|
|
2794 #if 0
|
|
2795 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
2796 #endif
|
|
2797
|
74
|
2798 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
260
|
2799 state = NGX_PEER_NEXT;
|
74
|
2800 } else {
|
260
|
2801 state = NGX_PEER_FAILED;
|
28
|
2802 }
|
74
|
2803
|
326
|
2804 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
2805 u->peer.free(&u->peer, u->peer.data, state);
|
|
2806 }
|
74
|
2807
|
28
|
2808 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
2809 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
2810 "upstream timed out");
|
|
2811 }
|
126
|
2812
|
28
|
2813 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
2814 status = 0;
|
|
2815
|
|
2816 } else {
|
|
2817 switch(ft_type) {
|
|
2818
|
|
2819 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
2820 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
2821 break;
|
|
2822
|
|
2823 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
2824 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
2825 break;
|
|
2826
|
|
2827 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
2828 status = NGX_HTTP_NOT_FOUND;
|
|
2829 break;
|
|
2830
|
|
2831 /*
|
|
2832 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
2833 * never reach here
|
|
2834 */
|
|
2835
|
|
2836 default:
|
|
2837 status = NGX_HTTP_BAD_GATEWAY;
|
|
2838 }
|
|
2839 }
|
|
2840
|
132
|
2841 if (r->connection->error) {
|
28
|
2842 ngx_http_upstream_finalize_request(r, u,
|
|
2843 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
2844 return;
|
|
2845 }
|
|
2846
|
|
2847 if (status) {
|
|
2848 u->state->status = status;
|
|
2849
|
74
|
2850 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
28
|
2851
|
|
2852 #if (NGX_HTTP_CACHE)
|
|
2853
|
511
|
2854 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
2855 && (u->conf->cache_use_stale & ft_type))
|
|
2856 {
|
495
|
2857 ngx_int_t rc;
|
|
2858
|
|
2859 rc = u->reinit_request(r);
|
|
2860
|
|
2861 if (rc == NGX_OK) {
|
511
|
2862 u->cache_status = NGX_HTTP_CACHE_STALE;
|
495
|
2863 rc = ngx_http_upstream_cache_send(r, u);
|
|
2864 }
|
|
2865
|
|
2866 ngx_http_upstream_finalize_request(r, u, rc);
|
28
|
2867 return;
|
|
2868 }
|
|
2869 #endif
|
|
2870
|
|
2871 ngx_http_upstream_finalize_request(r, u, status);
|
|
2872 return;
|
|
2873 }
|
|
2874 }
|
|
2875
|
|
2876 if (u->peer.connection) {
|
|
2877 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2878 "close http upstream connection: %d",
|
|
2879 u->peer.connection->fd);
|
126
|
2880 #if (NGX_HTTP_SSL)
|
260
|
2881
|
126
|
2882 if (u->peer.connection->ssl) {
|
260
|
2883 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2884 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
2885
|
|
2886 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2887 }
|
|
2888 #endif
|
260
|
2889
|
28
|
2890 ngx_close_connection(u->peer.connection);
|
|
2891 }
|
|
2892
|
|
2893 #if 0
|
|
2894 if (u->conf->busy_lock && !u->busy_locked) {
|
|
2895 ngx_http_upstream_busy_lock(p);
|
|
2896 return;
|
|
2897 }
|
|
2898 #endif
|
|
2899
|
|
2900 ngx_http_upstream_connect(r, u);
|
|
2901 }
|
|
2902
|
|
2903
|
36
|
2904 static void
|
118
|
2905 ngx_http_upstream_cleanup(void *data)
|
|
2906 {
|
|
2907 ngx_http_request_t *r = data;
|
|
2908
|
356
|
2909 ngx_http_upstream_t *u;
|
|
2910
|
118
|
2911 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2912 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
2913
|
356
|
2914 u = r->upstream;
|
|
2915
|
|
2916 if (u->resolved && u->resolved->ctx) {
|
|
2917 ngx_resolve_name_done(u->resolved->ctx);
|
542
|
2918 u->resolved->ctx = NULL;
|
348
|
2919 }
|
|
2920
|
356
|
2921 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
118
|
2922 }
|
|
2923
|
|
2924
|
|
2925 static void
|
36
|
2926 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
2927 ngx_http_upstream_t *u, ngx_int_t rc)
|
28
|
2928 {
|
262
|
2929 ngx_time_t *tp;
|
112
|
2930
|
32
|
2931 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2932 "finalize http upstream request: %i", rc);
|
28
|
2933
|
441
|
2934 if (u->cleanup) {
|
|
2935 *u->cleanup = NULL;
|
574
|
2936 u->cleanup = NULL;
|
441
|
2937 }
|
118
|
2938
|
542
|
2939 if (u->resolved && u->resolved->ctx) {
|
|
2940 ngx_resolve_name_done(u->resolved->ctx);
|
|
2941 u->resolved->ctx = NULL;
|
|
2942 }
|
|
2943
|
348
|
2944 if (u->state && u->state->response_sec) {
|
112
|
2945 tp = ngx_timeofday();
|
262
|
2946 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
2947 u->state->response_msec = tp->msec - u->state->response_msec;
|
439
|
2948
|
|
2949 if (u->pipe) {
|
|
2950 u->state->response_length = u->pipe->read_length;
|
|
2951 }
|
112
|
2952 }
|
|
2953
|
28
|
2954 u->finalize_request(r, rc);
|
|
2955
|
348
|
2956 if (u->peer.free) {
|
|
2957 u->peer.free(&u->peer, u->peer.data, 0);
|
|
2958 }
|
260
|
2959
|
28
|
2960 if (u->peer.connection) {
|
260
|
2961
|
126
|
2962 #if (NGX_HTTP_SSL)
|
|
2963
|
|
2964 /* TODO: do not shutdown persistent connection */
|
|
2965
|
|
2966 if (u->peer.connection->ssl) {
|
260
|
2967
|
|
2968 /*
|
|
2969 * We send the "close notify" shutdown alert to the upstream only
|
|
2970 * and do not wait its "close notify" shutdown alert.
|
|
2971 * It is acceptable according to the TLS standard.
|
|
2972 */
|
|
2973
|
|
2974 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
2975
|
|
2976 (void) ngx_ssl_shutdown(u->peer.connection);
|
126
|
2977 }
|
|
2978 #endif
|
260
|
2979
|
|
2980 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2981 "close http upstream connection: %d",
|
|
2982 u->peer.connection->fd);
|
|
2983
|
28
|
2984 ngx_close_connection(u->peer.connection);
|
|
2985 }
|
|
2986
|
32
|
2987 u->peer.connection = NULL;
|
|
2988
|
130
|
2989 if (u->pipe && u->pipe->temp_file) {
|
28
|
2990 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
2991 "http upstream temp fd: %d",
|
130
|
2992 u->pipe->temp_file->file.fd);
|
28
|
2993 }
|
|
2994
|
473
|
2995 #if (NGX_HTTP_CACHE)
|
|
2996
|
523
|
2997 if (u->cacheable && r->cache) {
|
473
|
2998 time_t valid;
|
|
2999
|
|
3000 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
3001
|
|
3002 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
3003
|
|
3004 if (valid) {
|
|
3005 r->cache->valid_sec = ngx_time() + valid;
|
|
3006 r->cache->error = rc;
|
|
3007 }
|
|
3008 }
|
|
3009
|
603
|
3010 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
28
|
3011 }
|
473
|
3012
|
28
|
3013 #endif
|
|
3014
|
487
|
3015 if (u->header_sent
|
|
3016 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
473
|
3017 {
|
|
3018 rc = 0;
|
|
3019 }
|
|
3020
|
64
|
3021 if (rc == NGX_DECLINED) {
|
|
3022 return;
|
|
3023 }
|
|
3024
|
32
|
3025 r->connection->log->action = "sending to client";
|
|
3026
|
515
|
3027 if (rc == 0) {
|
435
|
3028 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
28
|
3029 }
|
|
3030
|
|
3031 ngx_http_finalize_request(r, rc);
|
|
3032 }
|
|
3033
|
|
3034
|
58
|
3035 static ngx_int_t
|
|
3036 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3037 ngx_uint_t offset)
|
126
|
3038 {
|
58
|
3039 ngx_table_elt_t **ph;
|
126
|
3040
|
58
|
3041 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
3042
|
|
3043 if (*ph == NULL) {
|
|
3044 *ph = h;
|
|
3045 }
|
|
3046
|
|
3047 return NGX_OK;
|
|
3048 }
|
|
3049
|
|
3050
|
|
3051 static ngx_int_t
|
481
|
3052 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3053 ngx_uint_t offset)
|
|
3054 {
|
|
3055 return NGX_OK;
|
|
3056 }
|
|
3057
|
|
3058
|
|
3059 static ngx_int_t
|
597
|
3060 ngx_http_upstream_process_set_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3061 ngx_uint_t offset)
|
|
3062 {
|
|
3063 #if (NGX_HTTP_CACHE)
|
|
3064 ngx_http_upstream_t *u;
|
|
3065
|
|
3066 u = r->upstream;
|
|
3067
|
|
3068 if (!(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_SET_COOKIE)) {
|
|
3069 u->cacheable = 0;
|
|
3070 }
|
|
3071 #endif
|
|
3072
|
|
3073 return NGX_OK;
|
|
3074 }
|
|
3075
|
|
3076
|
|
3077 static ngx_int_t
|
481
|
3078 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
58
|
3079 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3080 {
|
493
|
3081 ngx_array_t *pa;
|
|
3082 ngx_table_elt_t **ph;
|
|
3083 ngx_http_upstream_t *u;
|
|
3084
|
|
3085 u = r->upstream;
|
|
3086 pa = &u->headers_in.cache_control;
|
58
|
3087
|
|
3088 if (pa->elts == NULL) {
|
|
3089 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
3090 {
|
|
3091 return NGX_ERROR;
|
|
3092 }
|
|
3093 }
|
|
3094
|
|
3095 ph = ngx_array_push(pa);
|
|
3096 if (ph == NULL) {
|
|
3097 return NGX_ERROR;
|
|
3098 }
|
|
3099
|
|
3100 *ph = h;
|
|
3101
|
489
|
3102 #if (NGX_HTTP_CACHE)
|
|
3103 {
|
|
3104 u_char *p, *last;
|
|
3105 ngx_int_t n;
|
|
3106
|
493
|
3107 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
3108 return NGX_OK;
|
|
3109 }
|
|
3110
|
481
|
3111 if (r->cache == NULL) {
|
|
3112 return NGX_OK;
|
|
3113 }
|
|
3114
|
|
3115 if (r->cache->valid_sec != 0) {
|
|
3116 return NGX_OK;
|
|
3117 }
|
|
3118
|
583
|
3119 p = h->value.data;
|
|
3120 last = p + h->value.len;
|
|
3121
|
|
3122 if (ngx_strlcasestrn(p, last, (u_char *) "no-cache", 8 - 1) != NULL
|
|
3123 || ngx_strlcasestrn(p, last, (u_char *) "no-store", 8 - 1) != NULL
|
|
3124 || ngx_strlcasestrn(p, last, (u_char *) "private", 7 - 1) != NULL)
|
481
|
3125 {
|
493
|
3126 u->cacheable = 0;
|
481
|
3127 return NGX_OK;
|
|
3128 }
|
|
3129
|
583
|
3130 p = ngx_strlcasestrn(p, last, (u_char *) "max-age=", 8 - 1);
|
481
|
3131
|
|
3132 if (p == NULL) {
|
|
3133 return NGX_OK;
|
|
3134 }
|
|
3135
|
|
3136 n = 0;
|
|
3137
|
|
3138 for (p += 8; p < last; p++) {
|
548
|
3139 if (*p == ',' || *p == ';' || *p == ' ') {
|
481
|
3140 break;
|
|
3141 }
|
|
3142
|
|
3143 if (*p >= '0' && *p <= '9') {
|
|
3144 n = n * 10 + *p - '0';
|
|
3145 continue;
|
|
3146 }
|
|
3147
|
493
|
3148 u->cacheable = 0;
|
481
|
3149 return NGX_OK;
|
|
3150 }
|
|
3151
|
|
3152 if (n == 0) {
|
493
|
3153 u->cacheable = 0;
|
481
|
3154 return NGX_OK;
|
|
3155 }
|
|
3156
|
|
3157 r->cache->valid_sec = ngx_time() + n;
|
489
|
3158 }
|
|
3159 #endif
|
|
3160
|
58
|
3161 return NGX_OK;
|
|
3162 }
|
|
3163
|
|
3164
|
|
3165 static ngx_int_t
|
481
|
3166 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
58
|
3167 ngx_uint_t offset)
|
|
3168 {
|
493
|
3169 ngx_http_upstream_t *u;
|
|
3170
|
|
3171 u = r->upstream;
|
|
3172 u->headers_in.expires = h;
|
489
|
3173
|
|
3174 #if (NGX_HTTP_CACHE)
|
|
3175 {
|
481
|
3176 time_t expires;
|
|
3177
|
493
|
3178 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
3179 return NGX_OK;
|
|
3180 }
|
|
3181
|
481
|
3182 if (r->cache == NULL) {
|
|
3183 return NGX_OK;
|
|
3184 }
|
|
3185
|
|
3186 if (r->cache->valid_sec != 0) {
|
|
3187 return NGX_OK;
|
|
3188 }
|
|
3189
|
|
3190 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
3191
|
|
3192 if (expires == NGX_ERROR || expires < ngx_time()) {
|
493
|
3193 u->cacheable = 0;
|
481
|
3194 return NGX_OK;
|
|
3195 }
|
|
3196
|
|
3197 r->cache->valid_sec = expires;
|
489
|
3198 }
|
|
3199 #endif
|
481
|
3200
|
|
3201 return NGX_OK;
|
|
3202 }
|
|
3203
|
|
3204
|
|
3205 static ngx_int_t
|
|
3206 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
3207 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3208 {
|
493
|
3209 ngx_http_upstream_t *u;
|
|
3210
|
|
3211 u = r->upstream;
|
|
3212 u->headers_in.x_accel_expires = h;
|
489
|
3213
|
|
3214 #if (NGX_HTTP_CACHE)
|
|
3215 {
|
481
|
3216 u_char *p;
|
|
3217 size_t len;
|
|
3218 ngx_int_t n;
|
|
3219
|
493
|
3220 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
3221 return NGX_OK;
|
|
3222 }
|
|
3223
|
481
|
3224 if (r->cache == NULL) {
|
|
3225 return NGX_OK;
|
|
3226 }
|
|
3227
|
|
3228 len = h->value.len;
|
|
3229 p = h->value.data;
|
|
3230
|
|
3231 if (p[0] != '@') {
|
|
3232 n = ngx_atoi(p, len);
|
|
3233
|
|
3234 switch (n) {
|
|
3235 case 0:
|
493
|
3236 u->cacheable = 0;
|
481
|
3237 case NGX_ERROR:
|
|
3238 return NGX_OK;
|
|
3239
|
|
3240 default:
|
|
3241 r->cache->valid_sec = ngx_time() + n;
|
|
3242 return NGX_OK;
|
|
3243 }
|
|
3244 }
|
|
3245
|
|
3246 p++;
|
|
3247 len--;
|
|
3248
|
|
3249 n = ngx_atoi(p, len);
|
|
3250
|
|
3251 if (n != NGX_ERROR) {
|
|
3252 r->cache->valid_sec = n;
|
|
3253 }
|
489
|
3254 }
|
|
3255 #endif
|
481
|
3256
|
58
|
3257 return NGX_OK;
|
|
3258 }
|
|
3259
|
|
3260
|
|
3261 static ngx_int_t
|
76
|
3262 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3263 ngx_uint_t offset)
|
126
|
3264 {
|
76
|
3265 ngx_int_t n;
|
|
3266
|
|
3267 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
3268
|
|
3269 n = ngx_atoi(h->value.data, h->value.len);
|
|
3270
|
|
3271 if (n != NGX_ERROR) {
|
|
3272 r->limit_rate = (size_t) n;
|
|
3273 }
|
|
3274
|
|
3275 return NGX_OK;
|
|
3276 }
|
|
3277
|
|
3278
|
|
3279 static ngx_int_t
|
198
|
3280 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3281 ngx_uint_t offset)
|
|
3282 {
|
|
3283 u_char c0, c1, c2;
|
|
3284
|
|
3285 if (r->upstream->conf->change_buffering) {
|
|
3286
|
|
3287 if (h->value.len == 2) {
|
|
3288 c0 = ngx_tolower(h->value.data[0]);
|
|
3289 c1 = ngx_tolower(h->value.data[1]);
|
|
3290
|
|
3291 if (c0 == 'n' && c1 == 'o') {
|
|
3292 r->upstream->buffering = 0;
|
|
3293 }
|
|
3294
|
|
3295 } else if (h->value.len == 3) {
|
|
3296 c0 = ngx_tolower(h->value.data[0]);
|
|
3297 c1 = ngx_tolower(h->value.data[1]);
|
|
3298 c2 = ngx_tolower(h->value.data[2]);
|
|
3299
|
|
3300 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
3301 r->upstream->buffering = 1;
|
|
3302 }
|
|
3303 }
|
|
3304 }
|
|
3305
|
|
3306 return NGX_OK;
|
|
3307 }
|
|
3308
|
|
3309
|
|
3310 static ngx_int_t
|
206
|
3311 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3312 ngx_uint_t offset)
|
|
3313 {
|
|
3314 r->headers_out.override_charset = &h->value;
|
|
3315
|
|
3316 return NGX_OK;
|
|
3317 }
|
|
3318
|
|
3319
|
|
3320 static ngx_int_t
|
58
|
3321 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3322 ngx_uint_t offset)
|
|
3323 {
|
122
|
3324 ngx_table_elt_t *ho, **ph;
|
58
|
3325
|
|
3326 ho = ngx_list_push(&r->headers_out.headers);
|
|
3327 if (ho == NULL) {
|
|
3328 return NGX_ERROR;
|
|
3329 }
|
|
3330
|
|
3331 *ho = *h;
|
|
3332
|
122
|
3333 if (offset) {
|
|
3334 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
3335 *ph = ho;
|
|
3336 }
|
|
3337
|
58
|
3338 return NGX_OK;
|
|
3339 }
|
|
3340
|
|
3341
|
|
3342 static ngx_int_t
|
|
3343 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
3344 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3345 {
|
|
3346 ngx_array_t *pa;
|
|
3347 ngx_table_elt_t *ho, **ph;
|
|
3348
|
|
3349 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
3350
|
|
3351 if (pa->elts == NULL) {
|
|
3352 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
3353 {
|
|
3354 return NGX_ERROR;
|
|
3355 }
|
|
3356 }
|
|
3357
|
|
3358 ph = ngx_array_push(pa);
|
|
3359 if (ph == NULL) {
|
|
3360 return NGX_ERROR;
|
|
3361 }
|
|
3362
|
|
3363 ho = ngx_list_push(&r->headers_out.headers);
|
|
3364 if (ho == NULL) {
|
|
3365 return NGX_ERROR;
|
|
3366 }
|
|
3367
|
|
3368 *ho = *h;
|
|
3369 *ph = ho;
|
|
3370
|
|
3371 return NGX_OK;
|
|
3372 }
|
|
3373
|
|
3374
|
|
3375 static ngx_int_t
|
|
3376 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3377 ngx_uint_t offset)
|
|
3378 {
|
206
|
3379 u_char *p, *last;
|
|
3380
|
|
3381 r->headers_out.content_type_len = h->value.len;
|
58
|
3382 r->headers_out.content_type = h->value;
|
503
|
3383 r->headers_out.content_type_lowcase = NULL;
|
58
|
3384
|
206
|
3385 for (p = h->value.data; *p; p++) {
|
|
3386
|
|
3387 if (*p != ';') {
|
|
3388 continue;
|
|
3389 }
|
|
3390
|
|
3391 last = p;
|
|
3392
|
|
3393 while (*++p == ' ') { /* void */ }
|
|
3394
|
372
|
3395 if (*p == '\0') {
|
|
3396 return NGX_OK;
|
|
3397 }
|
|
3398
|
286
|
3399 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
206
|
3400 continue;
|
|
3401 }
|
|
3402
|
|
3403 p += 8;
|
|
3404
|
|
3405 r->headers_out.content_type_len = last - h->value.data;
|
|
3406
|
416
|
3407 if (*p == '"') {
|
|
3408 p++;
|
|
3409 }
|
|
3410
|
|
3411 last = h->value.data + h->value.len;
|
|
3412
|
|
3413 if (*(last - 1) == '"') {
|
|
3414 last--;
|
|
3415 }
|
|
3416
|
|
3417 r->headers_out.charset.len = last - p;
|
206
|
3418 r->headers_out.charset.data = p;
|
292
|
3419
|
|
3420 return NGX_OK;
|
206
|
3421 }
|
|
3422
|
58
|
3423 return NGX_OK;
|
|
3424 }
|
|
3425
|
|
3426
|
|
3427 static ngx_int_t
|
|
3428 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3429 ngx_uint_t offset)
|
|
3430 {
|
|
3431 ngx_table_elt_t *ho;
|
|
3432
|
|
3433 ho = ngx_list_push(&r->headers_out.headers);
|
|
3434 if (ho == NULL) {
|
|
3435 return NGX_ERROR;
|
|
3436 }
|
|
3437
|
|
3438 *ho = *h;
|
|
3439
|
|
3440 r->headers_out.content_length = ho;
|
|
3441 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
3442
|
|
3443 return NGX_OK;
|
|
3444 }
|
|
3445
|
|
3446
|
|
3447 static ngx_int_t
|
473
|
3448 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3449 ngx_uint_t offset)
|
|
3450 {
|
|
3451 ngx_table_elt_t *ho;
|
|
3452
|
|
3453 ho = ngx_list_push(&r->headers_out.headers);
|
|
3454 if (ho == NULL) {
|
|
3455 return NGX_ERROR;
|
|
3456 }
|
|
3457
|
|
3458 *ho = *h;
|
|
3459
|
520
|
3460 r->headers_out.last_modified = ho;
|
|
3461
|
473
|
3462 #if (NGX_HTTP_CACHE)
|
|
3463
|
511
|
3464 if (r->upstream->cacheable) {
|
473
|
3465 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
3466 h->value.len);
|
|
3467 }
|
|
3468
|
|
3469 #endif
|
|
3470
|
|
3471 return NGX_OK;
|
|
3472 }
|
|
3473
|
|
3474
|
|
3475 static ngx_int_t
|
58
|
3476 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3477 ngx_uint_t offset)
|
|
3478 {
|
|
3479 ngx_int_t rc;
|
|
3480 ngx_table_elt_t *ho;
|
|
3481
|
|
3482 ho = ngx_list_push(&r->headers_out.headers);
|
|
3483 if (ho == NULL) {
|
|
3484 return NGX_ERROR;
|
|
3485 }
|
|
3486
|
|
3487 *ho = *h;
|
|
3488
|
|
3489 if (r->upstream->rewrite_redirect) {
|
|
3490 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
3491
|
78
|
3492 if (rc == NGX_DECLINED) {
|
|
3493 return NGX_OK;
|
|
3494 }
|
|
3495
|
58
|
3496 if (rc == NGX_OK) {
|
|
3497 r->headers_out.location = ho;
|
|
3498
|
|
3499 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3500 "rewritten location: \"%V\"", &ho->value);
|
|
3501 }
|
|
3502
|
|
3503 return rc;
|
|
3504 }
|
|
3505
|
348
|
3506 if (ho->value.data[0] != '/') {
|
|
3507 r->headers_out.location = ho;
|
|
3508 }
|
|
3509
|
58
|
3510 /*
|
|
3511 * we do not set r->headers_out.location here to avoid the handling
|
|
3512 * the local redirects without a host name by ngx_http_header_filter()
|
|
3513 */
|
|
3514
|
|
3515 return NGX_OK;
|
|
3516 }
|
|
3517
|
|
3518
|
|
3519 static ngx_int_t
|
|
3520 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
3521 ngx_uint_t offset)
|
|
3522 {
|
|
3523 u_char *p;
|
|
3524 ngx_int_t rc;
|
|
3525 ngx_table_elt_t *ho;
|
|
3526
|
|
3527 ho = ngx_list_push(&r->headers_out.headers);
|
|
3528 if (ho == NULL) {
|
|
3529 return NGX_ERROR;
|
|
3530 }
|
|
3531
|
|
3532 *ho = *h;
|
|
3533
|
|
3534 if (r->upstream->rewrite_redirect) {
|
|
3535
|
340
|
3536 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
58
|
3537
|
|
3538 if (p) {
|
|
3539 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
3540
|
|
3541 } else {
|
|
3542 return NGX_OK;
|
|
3543 }
|
|
3544
|
78
|
3545 if (rc == NGX_DECLINED) {
|
|
3546 return NGX_OK;
|
|
3547 }
|
|
3548
|
58
|
3549 if (rc == NGX_OK) {
|
348
|
3550 r->headers_out.refresh = ho;
|
|
3551
|
58
|
3552 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
3553 "rewritten refresh: \"%V\"", &ho->value);
|
|
3554 }
|
|
3555
|
|
3556 return rc;
|
|
3557 }
|
|
3558
|
348
|
3559 r->headers_out.refresh = ho;
|
|
3560
|
58
|
3561 return NGX_OK;
|
|
3562 }
|
|
3563
|
|
3564
|
473
|
3565 static ngx_int_t
|
|
3566 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
3567 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3568 {
|
|
3569 ngx_table_elt_t *ho;
|
|
3570
|
|
3571 #if (NGX_HTTP_CACHE)
|
|
3572
|
|
3573 if (r->cached) {
|
|
3574 r->allow_ranges = 1;
|
|
3575 return NGX_OK;
|
|
3576
|
|
3577 }
|
|
3578
|
|
3579 #endif
|
|
3580
|
|
3581 ho = ngx_list_push(&r->headers_out.headers);
|
|
3582 if (ho == NULL) {
|
|
3583 return NGX_ERROR;
|
|
3584 }
|
|
3585
|
|
3586 *ho = *h;
|
|
3587
|
520
|
3588 r->headers_out.accept_ranges = ho;
|
|
3589
|
473
|
3590 return NGX_OK;
|
|
3591 }
|
|
3592
|
|
3593
|
58
|
3594 #if (NGX_HTTP_GZIP)
|
|
3595
|
|
3596 static ngx_int_t
|
|
3597 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
3598 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
3599 {
|
|
3600 ngx_table_elt_t *ho;
|
|
3601
|
|
3602 ho = ngx_list_push(&r->headers_out.headers);
|
|
3603 if (ho == NULL) {
|
|
3604 return NGX_ERROR;
|
|
3605 }
|
|
3606
|
|
3607 *ho = *h;
|
|
3608
|
|
3609 r->headers_out.content_encoding = ho;
|
|
3610
|
|
3611 return NGX_OK;
|
|
3612 }
|
|
3613
|
|
3614 #endif
|
|
3615
|
|
3616
|
36
|
3617 static ngx_int_t
|
122
|
3618 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
28
|
3619 {
|
260
|
3620 ngx_http_variable_t *var, *v;
|
28
|
3621
|
122
|
3622 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
3623 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
3624 if (var == NULL) {
|
|
3625 return NGX_ERROR;
|
|
3626 }
|
|
3627
|
186
|
3628 var->get_handler = v->get_handler;
|
122
|
3629 var->data = v->data;
|
|
3630 }
|
|
3631
|
28
|
3632 return NGX_OK;
|
|
3633 }
|
58
|
3634
|
|
3635
|
122
|
3636 static ngx_int_t
|
298
|
3637 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
3638 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3639 {
|
|
3640 u_char *p;
|
|
3641 size_t len;
|
|
3642 ngx_uint_t i;
|
|
3643 ngx_http_upstream_state_t *state;
|
|
3644
|
|
3645 v->valid = 1;
|
340
|
3646 v->no_cacheable = 0;
|
298
|
3647 v->not_found = 0;
|
|
3648
|
|
3649 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3650 v->not_found = 1;
|
|
3651 return NGX_OK;
|
|
3652 }
|
|
3653
|
|
3654 len = 0;
|
|
3655 state = r->upstream_states->elts;
|
|
3656
|
|
3657 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
3658 if (state[i].peer) {
|
|
3659 len += state[i].peer->len + 2;
|
|
3660
|
|
3661 } else {
|
|
3662 len += 3;
|
|
3663 }
|
|
3664 }
|
|
3665
|
382
|
3666 p = ngx_pnalloc(r->pool, len);
|
298
|
3667 if (p == NULL) {
|
|
3668 return NGX_ERROR;
|
|
3669 }
|
|
3670
|
|
3671 v->data = p;
|
|
3672
|
|
3673 i = 0;
|
|
3674
|
|
3675 for ( ;; ) {
|
|
3676 if (state[i].peer) {
|
|
3677 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
3678 }
|
|
3679
|
|
3680 if (++i == r->upstream_states->nelts) {
|
|
3681 break;
|
|
3682 }
|
|
3683
|
|
3684 if (state[i].peer) {
|
|
3685 *p++ = ',';
|
|
3686 *p++ = ' ';
|
|
3687
|
|
3688 } else {
|
|
3689 *p++ = ' ';
|
|
3690 *p++ = ':';
|
|
3691 *p++ = ' ';
|
|
3692
|
|
3693 if (++i == r->upstream_states->nelts) {
|
|
3694 break;
|
|
3695 }
|
|
3696
|
|
3697 continue;
|
|
3698 }
|
|
3699 }
|
|
3700
|
|
3701 v->len = p - v->data;
|
|
3702
|
|
3703 return NGX_OK;
|
|
3704 }
|
|
3705
|
|
3706
|
|
3707 static ngx_int_t
|
122
|
3708 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
3709 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3710 {
|
|
3711 u_char *p;
|
|
3712 size_t len;
|
|
3713 ngx_uint_t i;
|
|
3714 ngx_http_upstream_state_t *state;
|
|
3715
|
|
3716 v->valid = 1;
|
340
|
3717 v->no_cacheable = 0;
|
122
|
3718 v->not_found = 0;
|
|
3719
|
296
|
3720 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3721 v->not_found = 1;
|
|
3722 return NGX_OK;
|
|
3723 }
|
|
3724
|
296
|
3725 len = r->upstream_states->nelts * (3 + 2);
|
122
|
3726
|
382
|
3727 p = ngx_pnalloc(r->pool, len);
|
122
|
3728 if (p == NULL) {
|
|
3729 return NGX_ERROR;
|
|
3730 }
|
|
3731
|
|
3732 v->data = p;
|
|
3733
|
|
3734 i = 0;
|
296
|
3735 state = r->upstream_states->elts;
|
122
|
3736
|
|
3737 for ( ;; ) {
|
296
|
3738 if (state[i].status) {
|
|
3739 p = ngx_sprintf(p, "%ui", state[i].status);
|
122
|
3740
|
|
3741 } else {
|
296
|
3742 *p++ = '-';
|
122
|
3743 }
|
|
3744
|
296
|
3745 if (++i == r->upstream_states->nelts) {
|
122
|
3746 break;
|
|
3747 }
|
|
3748
|
296
|
3749 if (state[i].peer) {
|
|
3750 *p++ = ',';
|
|
3751 *p++ = ' ';
|
|
3752
|
|
3753 } else {
|
|
3754 *p++ = ' ';
|
|
3755 *p++ = ':';
|
|
3756 *p++ = ' ';
|
|
3757
|
|
3758 if (++i == r->upstream_states->nelts) {
|
|
3759 break;
|
|
3760 }
|
|
3761
|
|
3762 continue;
|
|
3763 }
|
122
|
3764 }
|
|
3765
|
|
3766 v->len = p - v->data;
|
|
3767
|
|
3768 return NGX_OK;
|
|
3769 }
|
|
3770
|
|
3771
|
|
3772 static ngx_int_t
|
|
3773 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
3774 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3775 {
|
|
3776 u_char *p;
|
|
3777 size_t len;
|
|
3778 ngx_uint_t i;
|
262
|
3779 ngx_msec_int_t ms;
|
122
|
3780 ngx_http_upstream_state_t *state;
|
|
3781
|
|
3782 v->valid = 1;
|
340
|
3783 v->no_cacheable = 0;
|
122
|
3784 v->not_found = 0;
|
|
3785
|
296
|
3786 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
122
|
3787 v->not_found = 1;
|
|
3788 return NGX_OK;
|
|
3789 }
|
|
3790
|
296
|
3791 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
122
|
3792
|
382
|
3793 p = ngx_pnalloc(r->pool, len);
|
122
|
3794 if (p == NULL) {
|
|
3795 return NGX_ERROR;
|
|
3796 }
|
|
3797
|
|
3798 v->data = p;
|
|
3799
|
|
3800 i = 0;
|
296
|
3801 state = r->upstream_states->elts;
|
122
|
3802
|
|
3803 for ( ;; ) {
|
296
|
3804 if (state[i].status) {
|
346
|
3805 ms = (ngx_msec_int_t)
|
|
3806 (state[i].response_sec * 1000 + state[i].response_msec);
|
583
|
3807 ms = ngx_max(ms, 0);
|
262
|
3808 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
296
|
3809
|
|
3810 } else {
|
|
3811 *p++ = '-';
|
122
|
3812 }
|
|
3813
|
296
|
3814 if (++i == r->upstream_states->nelts) {
|
122
|
3815 break;
|
|
3816 }
|
|
3817
|
296
|
3818 if (state[i].peer) {
|
|
3819 *p++ = ',';
|
|
3820 *p++ = ' ';
|
|
3821
|
|
3822 } else {
|
|
3823 *p++ = ' ';
|
|
3824 *p++ = ':';
|
|
3825 *p++ = ' ';
|
|
3826
|
|
3827 if (++i == r->upstream_states->nelts) {
|
|
3828 break;
|
|
3829 }
|
|
3830
|
|
3831 continue;
|
|
3832 }
|
122
|
3833 }
|
|
3834
|
|
3835 v->len = p - v->data;
|
|
3836
|
|
3837 return NGX_OK;
|
|
3838 }
|
|
3839
|
|
3840
|
439
|
3841 static ngx_int_t
|
|
3842 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
3843 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3844 {
|
|
3845 u_char *p;
|
|
3846 size_t len;
|
|
3847 ngx_uint_t i;
|
|
3848 ngx_http_upstream_state_t *state;
|
|
3849
|
|
3850 v->valid = 1;
|
|
3851 v->no_cacheable = 0;
|
|
3852 v->not_found = 0;
|
|
3853
|
|
3854 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
3855 v->not_found = 1;
|
|
3856 return NGX_OK;
|
|
3857 }
|
|
3858
|
|
3859 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
3860
|
|
3861 p = ngx_pnalloc(r->pool, len);
|
|
3862 if (p == NULL) {
|
|
3863 return NGX_ERROR;
|
|
3864 }
|
|
3865
|
|
3866 v->data = p;
|
|
3867
|
|
3868 i = 0;
|
|
3869 state = r->upstream_states->elts;
|
|
3870
|
|
3871 for ( ;; ) {
|
|
3872 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
3873
|
|
3874 if (++i == r->upstream_states->nelts) {
|
|
3875 break;
|
|
3876 }
|
|
3877
|
|
3878 if (state[i].peer) {
|
|
3879 *p++ = ',';
|
|
3880 *p++ = ' ';
|
|
3881
|
|
3882 } else {
|
|
3883 *p++ = ' ';
|
|
3884 *p++ = ':';
|
|
3885 *p++ = ' ';
|
|
3886
|
|
3887 if (++i == r->upstream_states->nelts) {
|
|
3888 break;
|
|
3889 }
|
|
3890
|
|
3891 continue;
|
|
3892 }
|
|
3893 }
|
|
3894
|
|
3895 v->len = p - v->data;
|
|
3896
|
|
3897 return NGX_OK;
|
|
3898 }
|
|
3899
|
|
3900
|
296
|
3901 ngx_int_t
|
|
3902 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
3903 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3904 {
|
|
3905 if (r->upstream == NULL) {
|
|
3906 v->not_found = 1;
|
|
3907 return NGX_OK;
|
|
3908 }
|
|
3909
|
|
3910 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
3911 &r->upstream->headers_in.headers.part,
|
|
3912 sizeof("upstream_http_") - 1);
|
|
3913 }
|
|
3914
|
|
3915
|
511
|
3916 #if (NGX_HTTP_CACHE)
|
|
3917
|
|
3918 ngx_int_t
|
|
3919 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
3920 ngx_http_variable_value_t *v, uintptr_t data)
|
|
3921 {
|
|
3922 ngx_uint_t n;
|
|
3923
|
|
3924 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
3925 v->not_found = 1;
|
|
3926 return NGX_OK;
|
|
3927 }
|
|
3928
|
|
3929 n = r->upstream->cache_status - 1;
|
|
3930
|
|
3931 v->valid = 1;
|
|
3932 v->no_cacheable = 0;
|
|
3933 v->not_found = 0;
|
|
3934 v->len = ngx_http_cache_status[n].len;
|
|
3935 v->data = ngx_http_cache_status[n].data;
|
|
3936
|
|
3937 return NGX_OK;
|
|
3938 }
|
|
3939
|
|
3940 #endif
|
|
3941
|
|
3942
|
200
|
3943 static char *
|
|
3944 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
3945 {
|
260
|
3946 char *rv;
|
|
3947 void *mconf;
|
|
3948 ngx_str_t *value;
|
|
3949 ngx_url_t u;
|
|
3950 ngx_uint_t m;
|
|
3951 ngx_conf_t pcf;
|
|
3952 ngx_http_module_t *module;
|
|
3953 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
3954 ngx_http_upstream_srv_conf_t *uscf;
|
|
3955
|
|
3956 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
3957
|
|
3958 value = cf->args->elts;
|
|
3959 u.host = value[1];
|
|
3960 u.no_resolve = 1;
|
|
3961
|
|
3962 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
3963 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
3964 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
3965 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
3966 |NGX_HTTP_UPSTREAM_DOWN
|
|
3967 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
3968 if (uscf == NULL) {
|
|
3969 return NGX_CONF_ERROR;
|
|
3970 }
|
|
3971
|
200
|
3972
|
|
3973 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
3974 if (ctx == NULL) {
|
|
3975 return NGX_CONF_ERROR;
|
|
3976 }
|
|
3977
|
260
|
3978 http_ctx = cf->ctx;
|
|
3979 ctx->main_conf = http_ctx->main_conf;
|
200
|
3980
|
|
3981 /* the upstream{}'s srv_conf */
|
|
3982
|
|
3983 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3984 if (ctx->srv_conf == NULL) {
|
|
3985 return NGX_CONF_ERROR;
|
|
3986 }
|
|
3987
|
|
3988 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
3989
|
260
|
3990 uscf->srv_conf = ctx->srv_conf;
|
|
3991
|
200
|
3992
|
|
3993 /* the upstream{}'s loc_conf */
|
|
3994
|
|
3995 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
3996 if (ctx->loc_conf == NULL) {
|
|
3997 return NGX_CONF_ERROR;
|
|
3998 }
|
|
3999
|
|
4000 for (m = 0; ngx_modules[m]; m++) {
|
|
4001 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
4002 continue;
|
|
4003 }
|
|
4004
|
|
4005 module = ngx_modules[m]->ctx;
|
|
4006
|
260
|
4007 if (module->create_srv_conf) {
|
|
4008 mconf = module->create_srv_conf(cf);
|
|
4009 if (mconf == NULL) {
|
|
4010 return NGX_CONF_ERROR;
|
|
4011 }
|
|
4012
|
|
4013 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
4014 }
|
|
4015
|
200
|
4016 if (module->create_loc_conf) {
|
|
4017 mconf = module->create_loc_conf(cf);
|
|
4018 if (mconf == NULL) {
|
|
4019 return NGX_CONF_ERROR;
|
|
4020 }
|
|
4021
|
|
4022 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
4023 }
|
|
4024 }
|
|
4025
|
|
4026
|
|
4027 /* parse inside upstream{} */
|
|
4028
|
|
4029 pcf = *cf;
|
|
4030 cf->ctx = ctx;
|
|
4031 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
4032
|
|
4033 rv = ngx_conf_parse(cf, NULL);
|
|
4034
|
|
4035 *cf = pcf;
|
|
4036
|
|
4037 if (rv != NGX_CONF_OK) {
|
|
4038 return rv;
|
|
4039 }
|
|
4040
|
|
4041 if (uscf->servers == NULL) {
|
|
4042 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4043 "no servers are inside upstream");
|
|
4044 return NGX_CONF_ERROR;
|
|
4045 }
|
|
4046
|
|
4047 return rv;
|
|
4048 }
|
|
4049
|
|
4050
|
|
4051 static char *
|
|
4052 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
4053 {
|
|
4054 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
4055
|
260
|
4056 time_t fail_timeout;
|
|
4057 ngx_str_t *value, s;
|
|
4058 ngx_url_t u;
|
|
4059 ngx_int_t weight, max_fails;
|
|
4060 ngx_uint_t i;
|
|
4061 ngx_http_upstream_server_t *us;
|
200
|
4062
|
|
4063 if (uscf->servers == NULL) {
|
260
|
4064 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
4065 sizeof(ngx_http_upstream_server_t));
|
200
|
4066 if (uscf->servers == NULL) {
|
|
4067 return NGX_CONF_ERROR;
|
|
4068 }
|
|
4069 }
|
|
4070
|
260
|
4071 us = ngx_array_push(uscf->servers);
|
|
4072 if (us == NULL) {
|
200
|
4073 return NGX_CONF_ERROR;
|
|
4074 }
|
|
4075
|
260
|
4076 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
4077
|
200
|
4078 value = cf->args->elts;
|
|
4079
|
|
4080 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
4081
|
|
4082 u.url = value[1];
|
266
|
4083 u.default_port = 80;
|
200
|
4084
|
340
|
4085 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
200
|
4086 if (u.err) {
|
|
4087 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4088 "%s in upstream \"%V\"", u.err, &u.url);
|
|
4089 }
|
|
4090
|
|
4091 return NGX_CONF_ERROR;
|
|
4092 }
|
|
4093
|
212
|
4094 weight = 1;
|
260
|
4095 max_fails = 1;
|
|
4096 fail_timeout = 10;
|
|
4097
|
|
4098 for (i = 2; i < cf->args->nelts; i++) {
|
|
4099
|
|
4100 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
4101
|
|
4102 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
4103 goto invalid;
|
|
4104 }
|
|
4105
|
|
4106 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
212
|
4107
|
|
4108 if (weight == NGX_ERROR || weight == 0) {
|
|
4109 goto invalid;
|
|
4110 }
|
|
4111
|
260
|
4112 continue;
|
|
4113 }
|
|
4114
|
|
4115 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
4116
|
|
4117 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
4118 goto invalid;
|
|
4119 }
|
|
4120
|
|
4121 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
4122
|
|
4123 if (max_fails == NGX_ERROR) {
|
|
4124 goto invalid;
|
|
4125 }
|
|
4126
|
|
4127 continue;
|
212
|
4128 }
|
260
|
4129
|
|
4130 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
4131
|
|
4132 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
4133 goto invalid;
|
|
4134 }
|
|
4135
|
|
4136 s.len = value[i].len - 13;
|
|
4137 s.data = &value[i].data[13];
|
|
4138
|
|
4139 fail_timeout = ngx_parse_time(&s, 1);
|
|
4140
|
372
|
4141 if (fail_timeout == NGX_ERROR) {
|
260
|
4142 goto invalid;
|
|
4143 }
|
|
4144
|
|
4145 continue;
|
|
4146 }
|
|
4147
|
326
|
4148 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
4149
|
|
4150 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
4151 goto invalid;
|
|
4152 }
|
|
4153
|
|
4154 us->backup = 1;
|
|
4155
|
|
4156 continue;
|
|
4157 }
|
|
4158
|
260
|
4159 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
4160
|
|
4161 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
4162 goto invalid;
|
|
4163 }
|
|
4164
|
|
4165 us->down = 1;
|
|
4166
|
|
4167 continue;
|
|
4168 }
|
|
4169
|
|
4170 goto invalid;
|
212
|
4171 }
|
|
4172
|
260
|
4173 us->addrs = u.addrs;
|
|
4174 us->naddrs = u.naddrs;
|
|
4175 us->weight = weight;
|
|
4176 us->max_fails = max_fails;
|
|
4177 us->fail_timeout = fail_timeout;
|
200
|
4178
|
|
4179 return NGX_CONF_OK;
|
212
|
4180
|
|
4181 invalid:
|
|
4182
|
260
|
4183 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4184 "invalid parameter \"%V\"", &value[i]);
|
212
|
4185
|
|
4186 return NGX_CONF_ERROR;
|
200
|
4187 }
|
|
4188
|
|
4189
|
|
4190 ngx_http_upstream_srv_conf_t *
|
260
|
4191 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
200
|
4192 {
|
|
4193 ngx_uint_t i;
|
260
|
4194 ngx_http_upstream_server_t *us;
|
200
|
4195 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
4196 ngx_http_upstream_main_conf_t *umcf;
|
|
4197
|
260
|
4198 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
4199
|
340
|
4200 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
200
|
4201 if (u->err) {
|
|
4202 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4203 "%s in upstream \"%V\"", u->err, &u->url);
|
|
4204 }
|
|
4205
|
|
4206 return NULL;
|
|
4207 }
|
|
4208 }
|
|
4209
|
|
4210 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
4211
|
|
4212 uscfp = umcf->upstreams.elts;
|
|
4213
|
|
4214 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
266
|
4215
|
|
4216 if (uscfp[i]->host.len != u->host.len
|
260
|
4217 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
4218 != 0)
|
|
4219 {
|
200
|
4220 continue;
|
|
4221 }
|
|
4222
|
260
|
4223 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
4224 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
200
|
4225 {
|
260
|
4226 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4227 "duplicate upstream \"%V\"", &u->host);
|
|
4228 return NULL;
|
200
|
4229 }
|
260
|
4230
|
266
|
4231 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
260
|
4232 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
266
|
4233 "upstream \"%V\" may not have port %d",
|
|
4234 &u->host, u->port);
|
|
4235 return NULL;
|
|
4236 }
|
|
4237
|
|
4238 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
4239 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
4240 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
4241 &u->host, uscfp[i]->port,
|
336
|
4242 uscfp[i]->file_name, uscfp[i]->line);
|
266
|
4243 return NULL;
|
|
4244 }
|
|
4245
|
|
4246 if (uscfp[i]->port != u->port) {
|
|
4247 continue;
|
260
|
4248 }
|
|
4249
|
324
|
4250 if (uscfp[i]->default_port && u->default_port
|
|
4251 && uscfp[i]->default_port != u->default_port)
|
|
4252 {
|
|
4253 continue;
|
|
4254 }
|
|
4255
|
260
|
4256 return uscfp[i];
|
200
|
4257 }
|
|
4258
|
|
4259 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
4260 if (uscf == NULL) {
|
|
4261 return NULL;
|
|
4262 }
|
|
4263
|
260
|
4264 uscf->flags = flags;
|
200
|
4265 uscf->host = u->host;
|
336
|
4266 uscf->file_name = cf->conf_file->file.name.data;
|
200
|
4267 uscf->line = cf->conf_file->line;
|
266
|
4268 uscf->port = u->port;
|
|
4269 uscf->default_port = u->default_port;
|
260
|
4270
|
|
4271 if (u->naddrs == 1) {
|
|
4272 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
4273 sizeof(ngx_http_upstream_server_t));
|
|
4274 if (uscf->servers == NULL) {
|
|
4275 return NGX_CONF_ERROR;
|
|
4276 }
|
|
4277
|
|
4278 us = ngx_array_push(uscf->servers);
|
|
4279 if (us == NULL) {
|
|
4280 return NGX_CONF_ERROR;
|
|
4281 }
|
|
4282
|
|
4283 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
4284
|
|
4285 us->addrs = u->addrs;
|
|
4286 us->naddrs = u->naddrs;
|
|
4287 }
|
200
|
4288
|
|
4289 uscfp = ngx_array_push(&umcf->upstreams);
|
|
4290 if (uscfp == NULL) {
|
|
4291 return NULL;
|
|
4292 }
|
|
4293
|
|
4294 *uscfp = uscf;
|
|
4295
|
|
4296 return uscf;
|
|
4297 }
|
|
4298
|
|
4299
|
552
|
4300 char *
|
570
|
4301 ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
552
|
4302 void *conf)
|
|
4303 {
|
|
4304 char *p = conf;
|
|
4305
|
|
4306 ngx_int_t rc;
|
|
4307 ngx_str_t *value;
|
|
4308 ngx_addr_t **paddr;
|
|
4309
|
|
4310 paddr = (ngx_addr_t **) (p + cmd->offset);
|
|
4311
|
|
4312 *paddr = ngx_palloc(cf->pool, sizeof(ngx_addr_t));
|
|
4313 if (*paddr == NULL) {
|
|
4314 return NGX_CONF_ERROR;
|
|
4315 }
|
|
4316
|
|
4317 value = cf->args->elts;
|
|
4318
|
|
4319 rc = ngx_parse_addr(cf->pool, *paddr, value[1].data, value[1].len);
|
|
4320
|
|
4321 switch (rc) {
|
|
4322 case NGX_OK:
|
|
4323 (*paddr)->name = value[1];
|
|
4324 return NGX_CONF_OK;
|
|
4325
|
|
4326 case NGX_DECLINED:
|
|
4327 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
4328 "invalid address \"%V\"", &value[1]);
|
|
4329 default:
|
|
4330 return NGX_CONF_ERROR;
|
|
4331 }
|
|
4332 }
|
|
4333
|
|
4334
|
356
|
4335 ngx_int_t
|
|
4336 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
4337 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
4338 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
4339 {
|
|
4340 ngx_str_t *h;
|
|
4341 ngx_uint_t i, j;
|
|
4342 ngx_array_t hide_headers;
|
|
4343 ngx_hash_key_t *hk;
|
|
4344
|
|
4345 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
4346 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
4347 {
|
|
4348 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
4349
|
507
|
4350 if (conf->hide_headers_hash.buckets
|
511
|
4351 #if (NGX_HTTP_CACHE)
|
|
4352 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
4353 #endif
|
|
4354 )
|
507
|
4355 {
|
356
|
4356 return NGX_OK;
|
|
4357 }
|
|
4358
|
|
4359 conf->hide_headers = prev->hide_headers;
|
|
4360 conf->pass_headers = prev->pass_headers;
|
|
4361
|
|
4362 } else {
|
|
4363 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
4364 conf->hide_headers = prev->hide_headers;
|
|
4365 }
|
|
4366
|
|
4367 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
4368 conf->pass_headers = prev->pass_headers;
|
|
4369 }
|
|
4370 }
|
|
4371
|
|
4372 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
4373 != NGX_OK)
|
|
4374 {
|
|
4375 return NGX_ERROR;
|
|
4376 }
|
|
4377
|
|
4378 for (h = default_hide_headers; h->len; h++) {
|
|
4379 hk = ngx_array_push(&hide_headers);
|
|
4380 if (hk == NULL) {
|
|
4381 return NGX_ERROR;
|
|
4382 }
|
|
4383
|
|
4384 hk->key = *h;
|
|
4385 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
4386 hk->value = (void *) 1;
|
|
4387 }
|
|
4388
|
|
4389 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
4390
|
|
4391 h = conf->hide_headers->elts;
|
|
4392
|
|
4393 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
4394
|
|
4395 hk = hide_headers.elts;
|
|
4396
|
|
4397 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4398 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4399 goto exist;
|
|
4400 }
|
|
4401 }
|
|
4402
|
|
4403 hk = ngx_array_push(&hide_headers);
|
|
4404 if (hk == NULL) {
|
|
4405 return NGX_ERROR;
|
|
4406 }
|
|
4407
|
|
4408 hk->key = h[i];
|
|
4409 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
4410 hk->value = (void *) 1;
|
|
4411
|
|
4412 exist:
|
|
4413
|
|
4414 continue;
|
|
4415 }
|
|
4416 }
|
|
4417
|
|
4418 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
4419
|
|
4420 h = conf->pass_headers->elts;
|
|
4421 hk = hide_headers.elts;
|
|
4422
|
|
4423 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
4424 for (j = 0; j < hide_headers.nelts; j++) {
|
|
4425
|
|
4426 if (hk[j].key.data == NULL) {
|
|
4427 continue;
|
|
4428 }
|
|
4429
|
|
4430 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
4431 hk[j].key.data = NULL;
|
|
4432 break;
|
|
4433 }
|
|
4434 }
|
|
4435 }
|
|
4436 }
|
|
4437
|
|
4438 hash->hash = &conf->hide_headers_hash;
|
|
4439 hash->key = ngx_hash_key_lc;
|
|
4440 hash->pool = cf->pool;
|
|
4441 hash->temp_pool = NULL;
|
|
4442
|
|
4443 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
4444 }
|
|
4445
|
|
4446
|
58
|
4447 static void *
|
|
4448 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
4449 {
|
|
4450 ngx_http_upstream_main_conf_t *umcf;
|
|
4451
|
|
4452 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
4453 if (umcf == NULL) {
|
|
4454 return NULL;
|
|
4455 }
|
|
4456
|
200
|
4457 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
4458 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
4459 != NGX_OK)
|
|
4460 {
|
505
|
4461 return NULL;
|
200
|
4462 }
|
|
4463
|
58
|
4464 return umcf;
|
|
4465 }
|
|
4466
|
|
4467
|
|
4468 static char *
|
200
|
4469 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
58
|
4470 {
|
|
4471 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
4472
|
200
|
4473 ngx_uint_t i;
|
|
4474 ngx_array_t headers_in;
|
|
4475 ngx_hash_key_t *hk;
|
|
4476 ngx_hash_init_t hash;
|
260
|
4477 ngx_http_upstream_init_pt init;
|
200
|
4478 ngx_http_upstream_header_t *header;
|
|
4479 ngx_http_upstream_srv_conf_t **uscfp;
|
|
4480
|
|
4481 uscfp = umcf->upstreams.elts;
|
|
4482
|
|
4483 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
260
|
4484
|
|
4485 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
4486 ngx_http_upstream_init_round_robin;
|
|
4487
|
|
4488 if (init(cf, uscfp[i]) != NGX_OK) {
|
200
|
4489 return NGX_CONF_ERROR;
|
|
4490 }
|
|
4491 }
|
198
|
4492
|
212
|
4493
|
260
|
4494 /* upstream_headers_in_hash */
|
|
4495
|
198
|
4496 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
4497 != NGX_OK)
|
58
|
4498 {
|
|
4499 return NGX_CONF_ERROR;
|
|
4500 }
|
|
4501
|
198
|
4502 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
4503 hk = ngx_array_push(&headers_in);
|
|
4504 if (hk == NULL) {
|
|
4505 return NGX_CONF_ERROR;
|
|
4506 }
|
|
4507
|
|
4508 hk->key = header->name;
|
|
4509 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
4510 hk->value = header;
|
|
4511 }
|
|
4512
|
|
4513 hash.hash = &umcf->headers_in_hash;
|
|
4514 hash.key = ngx_hash_key_lc;
|
|
4515 hash.max_size = 512;
|
244
|
4516 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
198
|
4517 hash.name = "upstream_headers_in_hash";
|
|
4518 hash.pool = cf->pool;
|
|
4519 hash.temp_pool = NULL;
|
|
4520
|
|
4521 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
4522 return NGX_CONF_ERROR;
|
|
4523 }
|
58
|
4524
|
|
4525 return NGX_CONF_OK;
|
|
4526 }
|