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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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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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36
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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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36
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71 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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72
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58
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73 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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75 static ngx_int_t
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481
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76 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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58
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77 ngx_table_elt_t *h, ngx_uint_t offset);
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78 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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79 ngx_table_elt_t *h, ngx_uint_t offset);
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481
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80 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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81 ngx_table_elt_t *h, ngx_uint_t offset);
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82 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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83 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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84 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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85 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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86 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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87 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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88 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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90 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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91 ngx_table_elt_t *h, ngx_uint_t offset);
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92 static ngx_int_t
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93 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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94 ngx_table_elt_t *h, ngx_uint_t offset);
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95 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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96 ngx_table_elt_t *h, ngx_uint_t offset);
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97 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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98 ngx_table_elt_t *h, ngx_uint_t offset);
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473
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99 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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100 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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101 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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102 ngx_table_elt_t *h, ngx_uint_t offset);
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103 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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104 ngx_table_elt_t *h, ngx_uint_t offset);
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473
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105 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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106 ngx_table_elt_t *h, ngx_uint_t offset);
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107
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58
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108 #if (NGX_HTTP_GZIP)
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109 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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110 ngx_table_elt_t *h, ngx_uint_t offset);
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111 #endif
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112
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122
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113 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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114 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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115 ngx_http_variable_value_t *v, uintptr_t data);
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122
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116 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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117 ngx_http_variable_value_t *v, uintptr_t data);
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118 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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119 ngx_http_variable_value_t *v, uintptr_t data);
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439
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120 static ngx_int_t ngx_http_upstream_response_length_variable(
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121 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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122
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200
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123 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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124 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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125 void *conf);
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126
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58
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127 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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128 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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129
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126
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130 #if (NGX_HTTP_SSL)
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140
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131 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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132 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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133 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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134 #endif
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135
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58
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136
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137 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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138
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139 { ngx_string("Status"),
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140 ngx_http_upstream_process_header_line,
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141 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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142 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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143
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144 { ngx_string("Content-Type"),
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145 ngx_http_upstream_process_header_line,
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146 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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147 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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148
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149 { ngx_string("Content-Length"),
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150 ngx_http_upstream_process_header_line,
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151 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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152 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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153
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154 { ngx_string("Date"),
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155 ngx_http_upstream_process_header_line,
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156 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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157 ngx_http_upstream_copy_header_line,
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158 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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159
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318
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160 { ngx_string("Last-Modified"),
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161 ngx_http_upstream_process_header_line,
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162 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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473
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163 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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164
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527
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165 { ngx_string("ETag"),
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166 ngx_http_upstream_process_header_line,
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167 offsetof(ngx_http_upstream_headers_in_t, etag),
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168 ngx_http_upstream_copy_header_line,
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169 offsetof(ngx_http_headers_out_t, etag), 0 },
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170
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58
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171 { ngx_string("Server"),
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172 ngx_http_upstream_process_header_line,
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173 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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174 ngx_http_upstream_copy_header_line,
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175 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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176
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78
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177 { ngx_string("WWW-Authenticate"),
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178 ngx_http_upstream_process_header_line,
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179 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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180 ngx_http_upstream_copy_header_line, 0, 0 },
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181
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58
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182 { ngx_string("Location"),
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394
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183 ngx_http_upstream_process_header_line,
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184 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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185 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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186
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187 { ngx_string("Refresh"),
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188 ngx_http_upstream_ignore_header_line, 0,
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64
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189 ngx_http_upstream_rewrite_refresh, 0, 0 },
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190
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191 { ngx_string("Set-Cookie"),
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192 ngx_http_upstream_ignore_header_line, 0,
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80
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193 ngx_http_upstream_copy_header_line, 0, 1 },
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194
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195 { ngx_string("Content-Disposition"),
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196 ngx_http_upstream_ignore_header_line, 0,
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197 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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198
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199 { ngx_string("Cache-Control"),
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481
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200 ngx_http_upstream_process_cache_control, 0,
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58
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201 ngx_http_upstream_copy_multi_header_lines,
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64
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202 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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203
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122
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204 { ngx_string("Expires"),
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481
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205 ngx_http_upstream_process_expires, 0,
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122
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206 ngx_http_upstream_copy_header_line,
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207 offsetof(ngx_http_headers_out_t, expires), 1 },
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208
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126
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209 { ngx_string("Accept-Ranges"),
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210 ngx_http_upstream_process_header_line,
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211 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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473
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212 ngx_http_upstream_copy_allow_ranges,
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126
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213 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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214
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58
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215 { ngx_string("Connection"),
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216 ngx_http_upstream_ignore_header_line, 0,
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64
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217 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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218
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190
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219 { ngx_string("Keep-Alive"),
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220 ngx_http_upstream_ignore_header_line, 0,
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221 ngx_http_upstream_ignore_header_line, 0, 0 },
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222
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58
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223 { ngx_string("X-Powered-By"),
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224 ngx_http_upstream_ignore_header_line, 0,
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198
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225 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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226
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227 { ngx_string("X-Accel-Expires"),
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481
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228 ngx_http_upstream_process_accel_expires, 0,
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198
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229 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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230
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231 { ngx_string("X-Accel-Redirect"),
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232 ngx_http_upstream_process_header_line,
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233 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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520
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234 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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235
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76
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236 { ngx_string("X-Accel-Limit-Rate"),
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237 ngx_http_upstream_process_limit_rate, 0,
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520
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238 ngx_http_upstream_copy_header_line, 0, 0 },
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76
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239
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198
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240 { ngx_string("X-Accel-Buffering"),
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241 ngx_http_upstream_process_buffering, 0,
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520
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242 ngx_http_upstream_copy_header_line, 0, 0 },
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198
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243
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206
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244 { ngx_string("X-Accel-Charset"),
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245 ngx_http_upstream_process_charset, 0,
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520
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246 ngx_http_upstream_copy_header_line, 0, 0 },
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206
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247
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58
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248 #if (NGX_HTTP_GZIP)
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249 { ngx_string("Content-Encoding"),
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250 ngx_http_upstream_process_header_line,
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251 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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252 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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253 #endif
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254
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64
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255 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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256 };
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28
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257
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258
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200
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259 static ngx_command_t ngx_http_upstream_commands[] = {
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260
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261 { ngx_string("upstream"),
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262 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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263 ngx_http_upstream,
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264 0,
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265 0,
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266 NULL },
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267
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268 { ngx_string("server"),
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260
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269 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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270 ngx_http_upstream_server,
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271 NGX_HTTP_SRV_CONF_OFFSET,
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272 0,
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273 NULL },
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274
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275 ngx_null_command
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276 };
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277
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278
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279 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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280 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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281 NULL, /* postconfiguration */
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282
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283 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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284 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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285
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286 NULL, /* create server configuration */
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287 NULL, /* merge server configuration */
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288
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289 NULL, /* create location configuration */
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290 NULL /* merge location configuration */
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291 };
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126
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292
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28
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293
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294 ngx_module_t ngx_http_upstream_module = {
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58
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295 NGX_MODULE_V1,
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28
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296 &ngx_http_upstream_module_ctx, /* module context */
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200
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297 ngx_http_upstream_commands, /* module directives */
|
|
28
|
298 NGX_HTTP_MODULE, /* module type */
|
|
90
|
299 NULL, /* init master */
|
|
28
|
300 NULL, /* init module */
|
|
90
|
301 NULL, /* init process */
|
|
|
302 NULL, /* init thread */
|
|
|
303 NULL, /* exit thread */
|
|
|
304 NULL, /* exit process */
|
|
|
305 NULL, /* exit master */
|
|
|
306 NGX_MODULE_V1_PADDING
|
|
28
|
307 };
|
|
|
308
|
|
|
309
|
|
122
|
310 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
311
|
|
298
|
312 { ngx_string("upstream_addr"), NULL,
|
|
435
|
313 ngx_http_upstream_addr_variable, 0,
|
|
|
314 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
298
|
315
|
|
186
|
316 { ngx_string("upstream_status"), NULL,
|
|
435
|
317 ngx_http_upstream_status_variable, 0,
|
|
|
318 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
319
|
|
186
|
320 { ngx_string("upstream_response_time"), NULL,
|
|
435
|
321 ngx_http_upstream_response_time_variable, 0,
|
|
|
322 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
323
|
|
439
|
324 { ngx_string("upstream_response_length"), NULL,
|
|
|
325 ngx_http_upstream_response_length_variable, 0,
|
|
|
326 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
327
|
|
513
|
328 #if (NGX_HTTP_CACHE)
|
|
|
329
|
|
511
|
330 { ngx_string("upstream_cache_status"), NULL,
|
|
|
331 ngx_http_upstream_cache_status, 0,
|
|
|
332 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
333
|
|
513
|
334 #endif
|
|
|
335
|
|
186
|
336 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
337 };
|
|
|
338
|
|
|
339
|
|
420
|
340 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
341 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
342 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
343 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
344 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
345 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
346 { 0, 0 }
|
|
|
347 };
|
|
|
348
|
|
503
|
349
|
|
|
350 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
|
351 { ngx_string("GET"), NGX_HTTP_GET},
|
|
|
352 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
|
353 { ngx_string("POST"), NGX_HTTP_POST },
|
|
|
354 { ngx_null_string, 0 }
|
|
|
355 };
|
|
|
356
|
|
|
357
|
|
520
|
358 ngx_int_t
|
|
|
359 ngx_http_upstream_create(ngx_http_request_t *r)
|
|
|
360 {
|
|
|
361 ngx_http_upstream_t *u;
|
|
|
362
|
|
|
363 u = r->upstream;
|
|
|
364
|
|
|
365 if (u && u->cleanup) {
|
|
537
|
366 r->main->count++;
|
|
520
|
367 ngx_http_upstream_cleanup(r);
|
|
|
368 *u->cleanup = NULL;
|
|
|
369 }
|
|
|
370
|
|
|
371 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
|
372 if (u == NULL) {
|
|
|
373 return NGX_ERROR;
|
|
|
374 }
|
|
|
375
|
|
|
376 r->upstream = u;
|
|
|
377
|
|
|
378 u->peer.log = r->connection->log;
|
|
|
379 u->peer.log_error = NGX_ERROR_ERR;
|
|
|
380 #if (NGX_THREADS)
|
|
|
381 u->peer.lock = &r->connection->lock;
|
|
|
382 #endif
|
|
|
383
|
|
529
|
384 #if (NGX_HTTP_CACHE)
|
|
|
385 r->cache = NULL;
|
|
|
386 #endif
|
|
|
387
|
|
520
|
388 return NGX_OK;
|
|
|
389 }
|
|
|
390
|
|
|
391
|
|
36
|
392 void
|
|
|
393 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
394 {
|
|
529
|
395 ngx_connection_t *c;
|
|
28
|
396
|
|
|
397 c = r->connection;
|
|
|
398
|
|
|
399 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
400 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
401
|
|
|
402 if (c->read->timer_set) {
|
|
|
403 ngx_del_timer(c->read);
|
|
|
404 }
|
|
|
405
|
|
|
406 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
407
|
|
|
408 if (!c->write->active) {
|
|
80
|
409 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
410 == NGX_ERROR)
|
|
28
|
411 {
|
|
|
412 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
413 return;
|
|
|
414 }
|
|
|
415 }
|
|
|
416 }
|
|
|
417
|
|
529
|
418 ngx_http_upstream_init_request(r);
|
|
|
419 }
|
|
|
420
|
|
|
421
|
|
|
422 static void
|
|
|
423 ngx_http_upstream_init_request(ngx_http_request_t *r)
|
|
|
424 {
|
|
|
425 ngx_str_t *host;
|
|
|
426 ngx_uint_t i;
|
|
|
427 ngx_resolver_ctx_t *ctx, temp;
|
|
|
428 ngx_http_cleanup_t *cln;
|
|
|
429 ngx_http_upstream_t *u;
|
|
|
430 ngx_http_core_loc_conf_t *clcf;
|
|
|
431 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
432 ngx_http_upstream_main_conf_t *umcf;
|
|
|
433
|
|
|
434 if (r->aio) {
|
|
|
435 return;
|
|
86
|
436 }
|
|
58
|
437
|
|
529
|
438 u = r->upstream;
|
|
|
439
|
|
473
|
440 #if (NGX_HTTP_CACHE)
|
|
|
441
|
|
|
442 if (u->conf->cache) {
|
|
|
443 ngx_int_t rc;
|
|
|
444
|
|
|
445 rc = ngx_http_upstream_cache(r, u);
|
|
|
446
|
|
529
|
447 if (rc == NGX_BUSY) {
|
|
|
448 r->write_event_handler = ngx_http_upstream_init_request;
|
|
|
449 return;
|
|
|
450 }
|
|
|
451
|
|
|
452 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
453
|
|
473
|
454 if (rc == NGX_DONE) {
|
|
|
455 return;
|
|
|
456 }
|
|
|
457
|
|
|
458 if (rc != NGX_DECLINED) {
|
|
|
459 ngx_http_finalize_request(r, rc);
|
|
|
460 return;
|
|
|
461 }
|
|
|
462 }
|
|
|
463
|
|
|
464 #endif
|
|
|
465
|
|
529
|
466 u->store = (u->conf->store || u->conf->store_lengths);
|
|
|
467
|
|
|
468 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
|
469 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
470 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
471 }
|
|
|
472
|
|
|
473 if (r->request_body) {
|
|
|
474 u->request_bufs = r->request_body->bufs;
|
|
|
475 }
|
|
|
476
|
|
86
|
477 if (u->create_request(r) != NGX_OK) {
|
|
28
|
478 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
479 return;
|
|
|
480 }
|
|
|
481
|
|
58
|
482 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
483
|
|
529
|
484 u->output.alignment = clcf->directio_alignment;
|
|
28
|
485 u->output.pool = r->pool;
|
|
|
486 u->output.bufs.num = 1;
|
|
58
|
487 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
488 u->output.output_filter = ngx_chain_writer;
|
|
|
489 u->output.filter_ctx = &u->writer;
|
|
|
490
|
|
|
491 u->writer.pool = r->pool;
|
|
|
492
|
|
296
|
493 if (r->upstream_states == NULL) {
|
|
|
494
|
|
|
495 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
496 sizeof(ngx_http_upstream_state_t));
|
|
|
497 if (r->upstream_states == NULL) {
|
|
|
498 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
499 return;
|
|
|
500 }
|
|
|
501
|
|
|
502 } else {
|
|
|
503
|
|
|
504 u->state = ngx_array_push(r->upstream_states);
|
|
|
505 if (u->state == NULL) {
|
|
|
506 ngx_http_upstream_finalize_request(r, u,
|
|
|
507 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
508 return;
|
|
|
509 }
|
|
|
510
|
|
|
511 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
512 }
|
|
|
513
|
|
142
|
514 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
515 if (cln == NULL) {
|
|
|
516 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
517 return;
|
|
|
518 }
|
|
|
519
|
|
|
520 cln->handler = ngx_http_upstream_cleanup;
|
|
|
521 cln->data = r;
|
|
|
522 u->cleanup = &cln->handler;
|
|
|
523
|
|
348
|
524 if (u->resolved == NULL) {
|
|
|
525
|
|
|
526 uscf = u->conf->upstream;
|
|
|
527
|
|
|
528 } else {
|
|
|
529
|
|
443
|
530 if (u->resolved->sockaddr) {
|
|
|
531
|
|
|
532 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
533 != NGX_OK)
|
|
|
534 {
|
|
542
|
535 ngx_http_upstream_finalize_request(r, u,
|
|
|
536 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
443
|
537 return;
|
|
|
538 }
|
|
|
539
|
|
|
540 ngx_http_upstream_connect(r, u);
|
|
|
541
|
|
|
542 return;
|
|
|
543 }
|
|
|
544
|
|
356
|
545 host = &u->resolved->host;
|
|
348
|
546
|
|
|
547 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
548
|
|
|
549 uscfp = umcf->upstreams.elts;
|
|
|
550
|
|
|
551 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
552
|
|
|
553 uscf = uscfp[i];
|
|
|
554
|
|
|
555 if (uscf->host.len == host->len
|
|
425
|
556 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
557 || uscf->port == u->resolved->port)
|
|
348
|
558 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
559 {
|
|
|
560 goto found;
|
|
|
561 }
|
|
|
562 }
|
|
|
563
|
|
|
564 temp.name = *host;
|
|
|
565
|
|
|
566 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
567 if (ctx == NULL) {
|
|
542
|
568 ngx_http_upstream_finalize_request(r, u,
|
|
|
569 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
570 return;
|
|
|
571 }
|
|
|
572
|
|
354
|
573 if (ctx == NGX_NO_RESOLVER) {
|
|
529
|
574 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
354
|
575 "no resolver defined to resolve %V", host);
|
|
|
576
|
|
542
|
577 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
354
|
578 return;
|
|
|
579 }
|
|
|
580
|
|
348
|
581 ctx->name = *host;
|
|
|
582 ctx->type = NGX_RESOLVE_A;
|
|
|
583 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
584 ctx->data = r;
|
|
|
585 ctx->timeout = clcf->resolver_timeout;
|
|
|
586
|
|
372
|
587 u->resolved->ctx = ctx;
|
|
|
588
|
|
348
|
589 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
590 u->resolved->ctx = NULL;
|
|
542
|
591 ngx_http_upstream_finalize_request(r, u,
|
|
|
592 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
593 return;
|
|
|
594 }
|
|
|
595
|
|
|
596 return;
|
|
|
597 }
|
|
|
598
|
|
|
599 found:
|
|
|
600
|
|
|
601 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
542
|
602 ngx_http_upstream_finalize_request(r, u,
|
|
|
603 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
604 return;
|
|
|
605 }
|
|
|
606
|
|
28
|
607 ngx_http_upstream_connect(r, u);
|
|
|
608 }
|
|
|
609
|
|
|
610
|
|
473
|
611 #if (NGX_HTTP_CACHE)
|
|
|
612
|
|
|
613 static ngx_int_t
|
|
|
614 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
615 {
|
|
|
616 ngx_int_t rc;
|
|
|
617 ngx_http_cache_t *c;
|
|
|
618
|
|
529
|
619 c = r->cache;
|
|
|
620
|
|
473
|
621 if (c == NULL) {
|
|
529
|
622
|
|
|
623 if (!(r->method & u->conf->cache_methods)) {
|
|
|
624 return NGX_DECLINED;
|
|
|
625 }
|
|
|
626
|
|
|
627 if (r->method & NGX_HTTP_HEAD) {
|
|
|
628 u->method = ngx_http_core_get_method;
|
|
|
629 }
|
|
|
630
|
|
|
631 c = ngx_pcalloc(r->pool, sizeof(ngx_http_cache_t));
|
|
|
632 if (c == NULL) {
|
|
|
633 return NGX_ERROR;
|
|
|
634 }
|
|
|
635
|
|
|
636 if (ngx_array_init(&c->keys, r->pool, 4, sizeof(ngx_str_t)) != NGX_OK) {
|
|
|
637 return NGX_ERROR;
|
|
|
638 }
|
|
|
639
|
|
|
640 r->cache = c;
|
|
|
641 c->file.log = r->connection->log;
|
|
|
642
|
|
|
643 if (u->create_key(r) != NGX_OK) {
|
|
|
644 return NGX_ERROR;
|
|
|
645 }
|
|
|
646
|
|
|
647 /* TODO: add keys */
|
|
|
648
|
|
|
649 ngx_http_file_cache_create_key(r);
|
|
|
650
|
|
|
651 u->cacheable = 1;
|
|
|
652
|
|
|
653 c->min_uses = u->conf->cache_min_uses;
|
|
|
654 c->body_start = u->conf->buffer_size;
|
|
|
655 c->file_cache = u->conf->cache->data;
|
|
|
656
|
|
|
657 u->cache_status = NGX_HTTP_CACHE_MISS;
|
|
473
|
658 }
|
|
|
659
|
|
|
660 rc = ngx_http_file_cache_open(r);
|
|
|
661
|
|
507
|
662 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
663 "http upstream cache: %i", rc);
|
|
|
664
|
|
511
|
665 switch (rc) {
|
|
|
666
|
|
|
667 case NGX_HTTP_CACHE_UPDATING:
|
|
|
668
|
|
507
|
669 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
|
511
|
670 u->cache_status = rc;
|
|
507
|
671 rc = NGX_OK;
|
|
|
672
|
|
|
673 } else {
|
|
|
674 rc = NGX_HTTP_CACHE_STALE;
|
|
|
675 }
|
|
511
|
676
|
|
|
677 break;
|
|
|
678
|
|
|
679 case NGX_OK:
|
|
|
680 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
507
|
681 }
|
|
473
|
682
|
|
511
|
683 switch (rc) {
|
|
|
684
|
|
|
685 case NGX_OK:
|
|
473
|
686
|
|
|
687 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
688
|
|
|
689 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
690 return rc;
|
|
|
691 }
|
|
|
692
|
|
511
|
693 break;
|
|
|
694
|
|
|
695 case NGX_HTTP_CACHE_STALE:
|
|
473
|
696
|
|
481
|
697 c->valid_sec = 0;
|
|
473
|
698 u->buffer.start = NULL;
|
|
511
|
699 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
|
700
|
|
|
701 break;
|
|
|
702
|
|
|
703 case NGX_DECLINED:
|
|
473
|
704
|
|
|
705 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
|
706 u->buffer.start = NULL;
|
|
|
707
|
|
|
708 } else {
|
|
|
709 u->buffer.pos = u->buffer.start + c->header_start;
|
|
|
710 u->buffer.last = u->buffer.pos;
|
|
|
711 }
|
|
|
712
|
|
511
|
713 break;
|
|
|
714
|
|
529
|
715 case NGX_HTTP_CACHE_SCARCE:
|
|
473
|
716
|
|
|
717 u->cacheable = 0;
|
|
|
718
|
|
511
|
719 break;
|
|
|
720
|
|
529
|
721 case NGX_AGAIN:
|
|
|
722
|
|
|
723 return NGX_BUSY;
|
|
|
724
|
|
|
725 case NGX_ERROR:
|
|
|
726
|
|
|
727 return NGX_ERROR;
|
|
|
728
|
|
511
|
729 default:
|
|
473
|
730
|
|
|
731 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
|
732
|
|
511
|
733 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
|
734
|
|
473
|
735 return rc;
|
|
|
736 }
|
|
|
737
|
|
|
738 r->cached = 0;
|
|
|
739
|
|
|
740 return NGX_DECLINED;
|
|
|
741 }
|
|
|
742
|
|
|
743
|
|
|
744 static ngx_int_t
|
|
|
745 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
746 {
|
|
|
747 ngx_int_t rc;
|
|
|
748 ngx_http_cache_t *c;
|
|
|
749
|
|
511
|
750 r->cached = 1;
|
|
473
|
751 c = r->cache;
|
|
|
752
|
|
|
753 /* TODO: cache stack */
|
|
|
754
|
|
|
755 u->buffer = *c->buf;
|
|
|
756 u->buffer.pos += c->header_start;
|
|
|
757
|
|
|
758 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
759
|
|
|
760 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
|
761 sizeof(ngx_table_elt_t))
|
|
|
762 != NGX_OK)
|
|
|
763 {
|
|
|
764 return NGX_ERROR;
|
|
|
765 }
|
|
|
766
|
|
|
767 rc = u->process_header(r);
|
|
|
768
|
|
|
769 if (rc == NGX_OK) {
|
|
|
770
|
|
|
771 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
|
772 return NGX_DONE;
|
|
|
773 }
|
|
|
774
|
|
|
775 return ngx_http_cache_send(r);
|
|
|
776 }
|
|
|
777
|
|
|
778 if (rc == NGX_ERROR) {
|
|
|
779 return NGX_ERROR;
|
|
|
780 }
|
|
|
781
|
|
|
782 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
|
783
|
|
|
784 /* TODO: delete file */
|
|
|
785
|
|
|
786 return rc;
|
|
|
787 }
|
|
|
788
|
|
|
789 #endif
|
|
|
790
|
|
|
791
|
|
36
|
792 static void
|
|
348
|
793 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
794 {
|
|
|
795 ngx_http_request_t *r;
|
|
542
|
796 ngx_http_upstream_t *u;
|
|
348
|
797 ngx_http_upstream_resolved_t *ur;
|
|
|
798
|
|
|
799 r = ctx->data;
|
|
|
800
|
|
542
|
801 u = r->upstream;
|
|
|
802 ur = u->resolved;
|
|
348
|
803
|
|
|
804 if (ctx->state) {
|
|
|
805 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
806 "%V could not be resolved (%i: %s)",
|
|
|
807 &ctx->name, ctx->state,
|
|
|
808 ngx_resolver_strerror(ctx->state));
|
|
|
809
|
|
542
|
810 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
348
|
811 return;
|
|
|
812 }
|
|
|
813
|
|
|
814 ur->naddrs = ctx->naddrs;
|
|
|
815 ur->addrs = ctx->addrs;
|
|
|
816
|
|
|
817 #if (NGX_DEBUG)
|
|
|
818 {
|
|
|
819 in_addr_t addr;
|
|
|
820 ngx_uint_t i;
|
|
|
821
|
|
|
822 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
823 addr = ntohl(ur->addrs[i]);
|
|
|
824
|
|
|
825 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
826 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
827 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
828 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
829 }
|
|
|
830 }
|
|
|
831 #endif
|
|
|
832
|
|
|
833 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
542
|
834 ngx_http_upstream_finalize_request(r, u,
|
|
|
835 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
836 return;
|
|
|
837 }
|
|
|
838
|
|
|
839 ngx_resolve_name_done(ctx);
|
|
542
|
840 ur->ctx = NULL;
|
|
|
841
|
|
|
842 ngx_http_upstream_connect(r, u);
|
|
348
|
843 }
|
|
|
844
|
|
|
845
|
|
|
846 static void
|
|
435
|
847 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
848 {
|
|
|
849 ngx_connection_t *c;
|
|
|
850 ngx_http_request_t *r;
|
|
|
851 ngx_http_log_ctx_t *ctx;
|
|
|
852 ngx_http_upstream_t *u;
|
|
|
853
|
|
|
854 c = ev->data;
|
|
|
855 r = c->data;
|
|
|
856
|
|
|
857 u = r->upstream;
|
|
|
858 c = r->connection;
|
|
|
859
|
|
|
860 ctx = c->log->data;
|
|
|
861 ctx->current_request = r;
|
|
|
862
|
|
|
863 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
864 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
865
|
|
|
866 if (ev->write) {
|
|
439
|
867 u->write_event_handler(r, u);
|
|
435
|
868
|
|
|
869 } else {
|
|
439
|
870 u->read_event_handler(r, u);
|
|
435
|
871 }
|
|
|
872
|
|
|
873 ngx_http_run_posted_requests(c);
|
|
|
874 }
|
|
|
875
|
|
|
876
|
|
|
877 static void
|
|
58
|
878 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
879 {
|
|
|
880 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
881 }
|
|
|
882
|
|
|
883
|
|
|
884 static void
|
|
|
885 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
886 {
|
|
|
887 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
888 }
|
|
|
889
|
|
|
890
|
|
|
891 static void
|
|
|
892 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
893 ngx_event_t *ev)
|
|
28
|
894 {
|
|
|
895 int n;
|
|
|
896 char buf[1];
|
|
126
|
897 ngx_err_t err;
|
|
495
|
898 ngx_int_t event;
|
|
28
|
899 ngx_connection_t *c;
|
|
|
900 ngx_http_upstream_t *u;
|
|
|
901
|
|
76
|
902 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
903 "http upstream check client, write event:%d, \"%V\"",
|
|
|
904 ev->write, &r->uri);
|
|
28
|
905
|
|
58
|
906 c = r->connection;
|
|
32
|
907 u = r->upstream;
|
|
|
908
|
|
132
|
909 if (c->error) {
|
|
495
|
910 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
911
|
|
|
912 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
913
|
|
|
914 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
|
915 ngx_http_upstream_finalize_request(r, u,
|
|
|
916 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
917 return;
|
|
|
918 }
|
|
|
919 }
|
|
|
920
|
|
491
|
921 if (!u->cacheable) {
|
|
|
922 ngx_http_upstream_finalize_request(r, u,
|
|
|
923 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
924 }
|
|
495
|
925
|
|
76
|
926 return;
|
|
|
927 }
|
|
|
928
|
|
28
|
929 #if (NGX_HAVE_KQUEUE)
|
|
|
930
|
|
|
931 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
932
|
|
|
933 if (!ev->pending_eof) {
|
|
|
934 return;
|
|
|
935 }
|
|
|
936
|
|
|
937 ev->eof = 1;
|
|
132
|
938 c->error = 1;
|
|
28
|
939
|
|
|
940 if (ev->kq_errno) {
|
|
|
941 ev->error = 1;
|
|
|
942 }
|
|
|
943
|
|
491
|
944 if (!u->cacheable && u->peer.connection) {
|
|
28
|
945 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
946 "kevent() reported that client closed prematurely "
|
|
|
947 "connection, so upstream connection is closed too");
|
|
28
|
948 ngx_http_upstream_finalize_request(r, u,
|
|
|
949 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
950 return;
|
|
|
951 }
|
|
|
952
|
|
|
953 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
954 "kevent() reported that client closed "
|
|
|
955 "prematurely connection");
|
|
|
956
|
|
|
957 if (u->peer.connection == NULL) {
|
|
|
958 ngx_http_upstream_finalize_request(r, u,
|
|
|
959 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
960 }
|
|
|
961
|
|
|
962 return;
|
|
|
963 }
|
|
|
964
|
|
|
965 #endif
|
|
|
966
|
|
|
967 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
968
|
|
|
969 err = ngx_socket_errno;
|
|
|
970
|
|
286
|
971 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
972 "http upstream recv(): %d", n);
|
|
|
973
|
|
28
|
974 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
975 return;
|
|
|
976 }
|
|
|
977
|
|
|
978 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
495
|
979
|
|
|
980 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
981
|
|
|
982 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
28
|
983 ngx_http_upstream_finalize_request(r, u,
|
|
|
984 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
985 return;
|
|
|
986 }
|
|
|
987 }
|
|
|
988
|
|
|
989 if (n > 0) {
|
|
|
990 return;
|
|
|
991 }
|
|
|
992
|
|
|
993 if (n == -1) {
|
|
|
994 if (err == NGX_EAGAIN) {
|
|
|
995 return;
|
|
|
996 }
|
|
|
997
|
|
|
998 ev->error = 1;
|
|
|
999
|
|
32
|
1000 } else { /* n == 0 */
|
|
28
|
1001 err = 0;
|
|
|
1002 }
|
|
|
1003
|
|
78
|
1004 ev->eof = 1;
|
|
132
|
1005 c->error = 1;
|
|
78
|
1006
|
|
491
|
1007 if (!u->cacheable && u->peer.connection) {
|
|
28
|
1008 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
1009 "client closed prematurely connection, "
|
|
|
1010 "so upstream connection is closed too");
|
|
|
1011 ngx_http_upstream_finalize_request(r, u,
|
|
|
1012 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1013 return;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
1017 "client closed prematurely connection");
|
|
|
1018
|
|
|
1019 if (u->peer.connection == NULL) {
|
|
|
1020 ngx_http_upstream_finalize_request(r, u,
|
|
|
1021 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1022 }
|
|
|
1023 }
|
|
|
1024
|
|
|
1025
|
|
36
|
1026 static void
|
|
|
1027 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1028 {
|
|
140
|
1029 ngx_int_t rc;
|
|
214
|
1030 ngx_time_t *tp;
|
|
140
|
1031 ngx_connection_t *c;
|
|
28
|
1032
|
|
32
|
1033 r->connection->log->action = "connecting to upstream";
|
|
28
|
1034
|
|
|
1035 r->connection->single_connection = 0;
|
|
|
1036
|
|
262
|
1037 if (u->state && u->state->response_sec) {
|
|
214
|
1038 tp = ngx_timeofday();
|
|
262
|
1039 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
1040 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
1041 }
|
|
|
1042
|
|
296
|
1043 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
1044 if (u->state == NULL) {
|
|
|
1045 ngx_http_upstream_finalize_request(r, u,
|
|
|
1046 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1047 return;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
1051
|
|
|
1052 tp = ngx_timeofday();
|
|
262
|
1053 u->state->response_sec = tp->sec;
|
|
|
1054 u->state->response_msec = tp->msec;
|
|
214
|
1055
|
|
28
|
1056 rc = ngx_event_connect_peer(&u->peer);
|
|
|
1057
|
|
|
1058 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1059 "http upstream connect: %i", rc);
|
|
|
1060
|
|
|
1061 if (rc == NGX_ERROR) {
|
|
|
1062 ngx_http_upstream_finalize_request(r, u,
|
|
|
1063 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1064 return;
|
|
|
1065 }
|
|
|
1066
|
|
356
|
1067 u->state->peer = u->peer.name;
|
|
|
1068
|
|
92
|
1069 if (rc == NGX_BUSY) {
|
|
|
1070 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
1071 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
1072 return;
|
|
92
|
1073 }
|
|
|
1074
|
|
326
|
1075 if (rc == NGX_DECLINED) {
|
|
28
|
1076 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1077 return;
|
|
|
1078 }
|
|
|
1079
|
|
126
|
1080 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
1081
|
|
28
|
1082 c = u->peer.connection;
|
|
|
1083
|
|
|
1084 c->data = r;
|
|
140
|
1085
|
|
435
|
1086 c->write->handler = ngx_http_upstream_handler;
|
|
|
1087 c->read->handler = ngx_http_upstream_handler;
|
|
|
1088
|
|
|
1089 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
1090 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
1091
|
|
326
|
1092 c->sendfile &= r->connection->sendfile;
|
|
372
|
1093 u->output.sendfile = c->sendfile;
|
|
28
|
1094
|
|
|
1095 c->pool = r->pool;
|
|
501
|
1096 c->log = r->connection->log;
|
|
|
1097 c->read->log = c->log;
|
|
|
1098 c->write->log = c->log;
|
|
28
|
1099
|
|
|
1100 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
1101
|
|
|
1102 u->writer.out = NULL;
|
|
|
1103 u->writer.last = &u->writer.out;
|
|
|
1104 u->writer.connection = c;
|
|
|
1105 u->writer.limit = 0;
|
|
|
1106
|
|
|
1107 if (u->request_sent) {
|
|
58
|
1108 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
1109 ngx_http_upstream_finalize_request(r, u,
|
|
|
1110 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1111 return;
|
|
|
1112 }
|
|
28
|
1113 }
|
|
|
1114
|
|
276
|
1115 if (r->request_body
|
|
|
1116 && r->request_body->buf
|
|
|
1117 && r->request_body->temp_file
|
|
|
1118 && r == r->main)
|
|
|
1119 {
|
|
122
|
1120 /*
|
|
|
1121 * the r->request_body->buf can be reused for one request only,
|
|
|
1122 * the subrequests should allocate their own temporay bufs
|
|
|
1123 */
|
|
|
1124
|
|
|
1125 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1126 if (u->output.free == NULL) {
|
|
|
1127 ngx_http_upstream_finalize_request(r, u,
|
|
|
1128 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1129 return;
|
|
28
|
1130 }
|
|
122
|
1131
|
|
|
1132 u->output.free->buf = r->request_body->buf;
|
|
|
1133 u->output.free->next = NULL;
|
|
|
1134 u->output.allocated = 1;
|
|
|
1135
|
|
|
1136 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
1137 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
1138 r->request_body->buf->tag = u->output.tag;
|
|
28
|
1139 }
|
|
|
1140
|
|
|
1141 u->request_sent = 0;
|
|
|
1142
|
|
|
1143 if (rc == NGX_AGAIN) {
|
|
|
1144 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
1145 return;
|
|
|
1146 }
|
|
|
1147
|
|
126
|
1148 #if (NGX_HTTP_SSL)
|
|
|
1149
|
|
348
|
1150 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1151 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
1152 return;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 #endif
|
|
|
1156
|
|
28
|
1157 ngx_http_upstream_send_request(r, u);
|
|
|
1158 }
|
|
|
1159
|
|
|
1160
|
|
126
|
1161 #if (NGX_HTTP_SSL)
|
|
|
1162
|
|
|
1163 static void
|
|
140
|
1164 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
1165 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
1166 {
|
|
260
|
1167 ngx_int_t rc;
|
|
140
|
1168
|
|
|
1169 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
1170 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
463
|
1171 != NGX_OK)
|
|
140
|
1172 {
|
|
|
1173 ngx_http_upstream_finalize_request(r, u,
|
|
|
1174 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1175 return;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 c->sendfile = 0;
|
|
168
|
1179 u->output.sendfile = 0;
|
|
140
|
1180
|
|
403
|
1181 if (u->conf->ssl_session_reuse) {
|
|
|
1182 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
1183 ngx_http_upstream_finalize_request(r, u,
|
|
|
1184 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1185 return;
|
|
|
1186 }
|
|
140
|
1187 }
|
|
|
1188
|
|
190
|
1189 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
1190
|
|
140
|
1191 rc = ngx_ssl_handshake(c);
|
|
|
1192
|
|
|
1193 if (rc == NGX_AGAIN) {
|
|
|
1194 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
1195 return;
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 ngx_http_upstream_ssl_handshake(c);
|
|
|
1199 }
|
|
|
1200
|
|
|
1201
|
|
|
1202 static void
|
|
126
|
1203 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
1204 {
|
|
|
1205 ngx_http_request_t *r;
|
|
|
1206 ngx_http_upstream_t *u;
|
|
|
1207
|
|
|
1208 r = c->data;
|
|
|
1209 u = r->upstream;
|
|
|
1210
|
|
|
1211 if (c->ssl->handshaked) {
|
|
|
1212
|
|
403
|
1213 if (u->conf->ssl_session_reuse) {
|
|
|
1214 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
1215 }
|
|
260
|
1216
|
|
435
|
1217 c->write->handler = ngx_http_upstream_handler;
|
|
|
1218 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
1219
|
|
|
1220 ngx_http_upstream_send_request(r, u);
|
|
|
1221
|
|
|
1222 return;
|
|
|
1223 }
|
|
|
1224
|
|
|
1225 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1226
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 #endif
|
|
|
1230
|
|
|
1231
|
|
58
|
1232 static ngx_int_t
|
|
36
|
1233 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1234 {
|
|
|
1235 ngx_chain_t *cl;
|
|
|
1236
|
|
58
|
1237 if (u->reinit_request(r) != NGX_OK) {
|
|
|
1238 return NGX_ERROR;
|
|
|
1239 }
|
|
|
1240
|
|
356
|
1241 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
1242
|
|
|
1243 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
1244 sizeof(ngx_table_elt_t))
|
|
|
1245 != NGX_OK)
|
|
58
|
1246 {
|
|
|
1247 return NGX_ERROR;
|
|
28
|
1248 }
|
|
|
1249
|
|
|
1250 /* reinit the request chain */
|
|
126
|
1251
|
|
58
|
1252 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
1253 cl->buf->pos = cl->buf->start;
|
|
|
1254 cl->buf->file_pos = 0;
|
|
|
1255 }
|
|
|
1256
|
|
58
|
1257 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
1258
|
|
122
|
1259 if (r->request_body && r->request_body->temp_file
|
|
146
|
1260 && r != r->main && u->output.buf)
|
|
122
|
1261 {
|
|
|
1262 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1263 if (u->output.free == NULL) {
|
|
|
1264 return NGX_ERROR;
|
|
58
|
1265 }
|
|
122
|
1266
|
|
|
1267 u->output.free->buf = u->output.buf;
|
|
|
1268 u->output.free->next = NULL;
|
|
|
1269
|
|
|
1270 u->output.buf->pos = u->output.buf->start;
|
|
|
1271 u->output.buf->last = u->output.buf->start;
|
|
58
|
1272 }
|
|
28
|
1273
|
|
|
1274 u->output.buf = NULL;
|
|
|
1275 u->output.in = NULL;
|
|
|
1276 u->output.busy = NULL;
|
|
126
|
1277
|
|
130
|
1278 /* reinit u->buffer */
|
|
126
|
1279
|
|
473
|
1280 u->buffer.pos = u->buffer.start;
|
|
|
1281
|
|
|
1282 #if (NGX_HTTP_CACHE)
|
|
|
1283
|
|
|
1284 if (r->cache) {
|
|
|
1285 u->buffer.pos += r->cache->header_start;
|
|
28
|
1286 }
|
|
58
|
1287
|
|
28
|
1288 #endif
|
|
|
1289
|
|
473
|
1290 u->buffer.last = u->buffer.pos;
|
|
|
1291
|
|
58
|
1292 return NGX_OK;
|
|
28
|
1293 }
|
|
|
1294
|
|
|
1295
|
|
36
|
1296 static void
|
|
|
1297 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1298 {
|
|
294
|
1299 ngx_int_t rc;
|
|
32
|
1300 ngx_connection_t *c;
|
|
126
|
1301
|
|
28
|
1302 c = u->peer.connection;
|
|
|
1303
|
|
|
1304 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1305 "http upstream send request");
|
|
|
1306
|
|
294
|
1307 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1308 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1309 return;
|
|
28
|
1310 }
|
|
|
1311
|
|
32
|
1312 c->log->action = "sending request to upstream";
|
|
28
|
1313
|
|
58
|
1314 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1315
|
|
|
1316 u->request_sent = 1;
|
|
|
1317
|
|
|
1318 if (rc == NGX_ERROR) {
|
|
|
1319 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1320 return;
|
|
|
1321 }
|
|
|
1322
|
|
|
1323 if (c->write->timer_set) {
|
|
|
1324 ngx_del_timer(c->write);
|
|
|
1325 }
|
|
|
1326
|
|
|
1327 if (rc == NGX_AGAIN) {
|
|
|
1328 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1329
|
|
439
|
1330 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1331 ngx_http_upstream_finalize_request(r, u,
|
|
|
1332 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1333 return;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 return;
|
|
|
1337 }
|
|
|
1338
|
|
|
1339 /* rc == NGX_OK */
|
|
|
1340
|
|
|
1341 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1342 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1343 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1344 ngx_tcp_push_n " failed");
|
|
|
1345 ngx_http_upstream_finalize_request(r, u,
|
|
|
1346 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1347 return;
|
|
28
|
1348 }
|
|
|
1349
|
|
|
1350 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1351 }
|
|
126
|
1352
|
|
28
|
1353 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1354
|
|
|
1355 #if 1
|
|
|
1356 if (c->read->ready) {
|
|
126
|
1357
|
|
28
|
1358 /* post aio operation */
|
|
|
1359
|
|
|
1360 /*
|
|
|
1361 * TODO comment
|
|
|
1362 * although we can post aio operation just in the end
|
|
|
1363 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1364 * it's better to do here because we postpone header buffer allocation
|
|
|
1365 */
|
|
|
1366
|
|
439
|
1367 ngx_http_upstream_process_header(r, u);
|
|
28
|
1368 return;
|
|
|
1369 }
|
|
|
1370 #endif
|
|
|
1371
|
|
435
|
1372 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1373
|
|
439
|
1374 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1375 ngx_http_upstream_finalize_request(r, u,
|
|
|
1376 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1377 return;
|
|
|
1378 }
|
|
|
1379 }
|
|
|
1380
|
|
|
1381
|
|
36
|
1382 static void
|
|
439
|
1383 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1384 ngx_http_upstream_t *u)
|
|
28
|
1385 {
|
|
439
|
1386 ngx_connection_t *c;
|
|
|
1387
|
|
|
1388 c = u->peer.connection;
|
|
|
1389
|
|
|
1390 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1391 "http upstream send request handler");
|
|
|
1392
|
|
439
|
1393 if (c->write->timedout) {
|
|
28
|
1394 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1395 return;
|
|
|
1396 }
|
|
|
1397
|
|
140
|
1398 #if (NGX_HTTP_SSL)
|
|
|
1399
|
|
348
|
1400 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1401 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1402 return;
|
|
|
1403 }
|
|
|
1404
|
|
|
1405 #endif
|
|
|
1406
|
|
200
|
1407 if (u->header_sent) {
|
|
435
|
1408 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1409
|
|
439
|
1410 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1411
|
|
|
1412 return;
|
|
|
1413 }
|
|
|
1414
|
|
28
|
1415 ngx_http_upstream_send_request(r, u);
|
|
|
1416 }
|
|
|
1417
|
|
|
1418
|
|
36
|
1419 static void
|
|
439
|
1420 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1421 {
|
|
473
|
1422 ssize_t n;
|
|
|
1423 ngx_int_t rc;
|
|
|
1424 ngx_connection_t *c;
|
|
28
|
1425
|
|
439
|
1426 c = u->peer.connection;
|
|
|
1427
|
|
|
1428 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1429 "http upstream process header");
|
|
28
|
1430
|
|
32
|
1431 c->log->action = "reading response header from upstream";
|
|
28
|
1432
|
|
439
|
1433 if (c->read->timedout) {
|
|
28
|
1434 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1435 return;
|
|
|
1436 }
|
|
126
|
1437
|
|
294
|
1438 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1439 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1440 return;
|
|
|
1441 }
|
|
|
1442
|
|
130
|
1443 if (u->buffer.start == NULL) {
|
|
|
1444 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1445 if (u->buffer.start == NULL) {
|
|
28
|
1446 ngx_http_upstream_finalize_request(r, u,
|
|
|
1447 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1448 return;
|
|
|
1449 }
|
|
|
1450
|
|
130
|
1451 u->buffer.pos = u->buffer.start;
|
|
|
1452 u->buffer.last = u->buffer.start;
|
|
|
1453 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1454 u->buffer.temporary = 1;
|
|
|
1455
|
|
|
1456 u->buffer.tag = u->output.tag;
|
|
28
|
1457
|
|
356
|
1458 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1459 sizeof(ngx_table_elt_t))
|
|
|
1460 != NGX_OK)
|
|
58
|
1461 {
|
|
|
1462 ngx_http_upstream_finalize_request(r, u,
|
|
|
1463 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1464 return;
|
|
|
1465 }
|
|
|
1466
|
|
473
|
1467 #if (NGX_HTTP_CACHE)
|
|
|
1468
|
|
|
1469 if (r->cache) {
|
|
|
1470 u->buffer.pos += r->cache->header_start;
|
|
130
|
1471 u->buffer.last = u->buffer.pos;
|
|
28
|
1472 }
|
|
|
1473 #endif
|
|
|
1474 }
|
|
|
1475
|
|
433
|
1476 for ( ;; ) {
|
|
|
1477
|
|
|
1478 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1479
|
|
|
1480 if (n == NGX_AGAIN) {
|
|
28
|
1481 #if 0
|
|
433
|
1482 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1483 #endif
|
|
|
1484
|
|
439
|
1485 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
433
|
1486 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1487 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
433
|
1488 return;
|
|
|
1489 }
|
|
|
1490
|
|
|
1491 return;
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 if (n == 0) {
|
|
439
|
1495 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
433
|
1496 "upstream prematurely closed connection");
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 if (n == NGX_ERROR || n == 0) {
|
|
|
1500 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1501 return;
|
|
|
1502 }
|
|
|
1503
|
|
433
|
1504 u->buffer.last += n;
|
|
28
|
1505
|
|
|
1506 #if 0
|
|
433
|
1507 u->valid_header_in = 0;
|
|
|
1508
|
|
|
1509 u->peer.cached = 0;
|
|
28
|
1510 #endif
|
|
|
1511
|
|
433
|
1512 rc = u->process_header(r);
|
|
|
1513
|
|
|
1514 if (rc == NGX_AGAIN) {
|
|
|
1515
|
|
|
1516 if (u->buffer.pos == u->buffer.end) {
|
|
439
|
1517 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
433
|
1518 "upstream sent too big header");
|
|
|
1519
|
|
|
1520 ngx_http_upstream_next(r, u,
|
|
|
1521 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1522 return;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 continue;
|
|
28
|
1526 }
|
|
|
1527
|
|
433
|
1528 break;
|
|
28
|
1529 }
|
|
|
1530
|
|
|
1531 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1532 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1533 return;
|
|
|
1534 }
|
|
|
1535
|
|
356
|
1536 if (rc == NGX_ERROR) {
|
|
28
|
1537 ngx_http_upstream_finalize_request(r, u,
|
|
|
1538 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1539 return;
|
|
|
1540 }
|
|
|
1541
|
|
|
1542 /* rc == NGX_OK */
|
|
|
1543
|
|
420
|
1544 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1545
|
|
|
1546 if (r->subrequest_in_memory) {
|
|
|
1547 u->buffer.last = u->buffer.pos;
|
|
58
|
1548 }
|
|
|
1549
|
|
420
|
1550 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1551 return;
|
|
|
1552 }
|
|
|
1553
|
|
420
|
1554 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1555 return;
|
|
|
1556 }
|
|
58
|
1557 }
|
|
|
1558
|
|
473
|
1559 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
64
|
1560 return;
|
|
|
1561 }
|
|
|
1562
|
|
248
|
1563 if (!r->subrequest_in_memory) {
|
|
|
1564 ngx_http_upstream_send_response(r, u);
|
|
|
1565 return;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 /* subrequest content in memory */
|
|
|
1569
|
|
|
1570 if (u->input_filter == NULL) {
|
|
|
1571 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1572 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1573 u->input_filter_ctx = r;
|
|
|
1574 }
|
|
|
1575
|
|
|
1576 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1577 ngx_http_upstream_finalize_request(r, u,
|
|
|
1578 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1579 return;
|
|
|
1580 }
|
|
|
1581
|
|
429
|
1582 n = u->buffer.last - u->buffer.pos;
|
|
|
1583
|
|
|
1584 if (n) {
|
|
|
1585 u->buffer.last -= n;
|
|
|
1586
|
|
439
|
1587 u->state->response_length += n;
|
|
|
1588
|
|
429
|
1589 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1590 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1591 return;
|
|
|
1592 }
|
|
|
1593
|
|
429
|
1594 if (u->length == 0) {
|
|
|
1595 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1596 return;
|
|
|
1597 }
|
|
248
|
1598 }
|
|
|
1599
|
|
435
|
1600 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1601
|
|
439
|
1602 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1603 }
|
|
|
1604
|
|
|
1605
|
|
294
|
1606 static ngx_int_t
|
|
420
|
1607 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1608 {
|
|
|
1609 ngx_uint_t status;
|
|
|
1610 ngx_http_upstream_next_t *un;
|
|
|
1611
|
|
|
1612 status = u->headers_in.status_n;
|
|
|
1613
|
|
|
1614 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1615
|
|
|
1616 if (status != un->status) {
|
|
|
1617 continue;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1621 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1622 return NGX_OK;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 #if (NGX_HTTP_CACHE)
|
|
|
1626
|
|
511
|
1627 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
1628 && (u->conf->cache_use_stale & un->mask))
|
|
|
1629 {
|
|
497
|
1630 ngx_int_t rc;
|
|
495
|
1631
|
|
|
1632 rc = u->reinit_request(r);
|
|
|
1633
|
|
|
1634 if (rc == NGX_OK) {
|
|
511
|
1635 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
495
|
1636 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
1637 }
|
|
|
1638
|
|
|
1639 ngx_http_upstream_finalize_request(r, u, rc);
|
|
420
|
1640 return NGX_OK;
|
|
|
1641 }
|
|
|
1642
|
|
|
1643 #endif
|
|
|
1644 }
|
|
|
1645
|
|
|
1646 return NGX_DECLINED;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649
|
|
|
1650 static ngx_int_t
|
|
|
1651 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1652 ngx_http_upstream_t *u)
|
|
|
1653 {
|
|
|
1654 ngx_int_t status;
|
|
|
1655 ngx_uint_t i;
|
|
|
1656 ngx_table_elt_t *h;
|
|
|
1657 ngx_http_err_page_t *err_page;
|
|
|
1658 ngx_http_core_loc_conf_t *clcf;
|
|
|
1659
|
|
447
|
1660 status = u->headers_in.status_n;
|
|
|
1661
|
|
|
1662 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1663 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1664 return NGX_OK;
|
|
|
1665 }
|
|
|
1666
|
|
420
|
1667 if (!u->conf->intercept_errors) {
|
|
|
1668 return NGX_DECLINED;
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1672
|
|
|
1673 if (clcf->error_pages == NULL) {
|
|
|
1674 return NGX_DECLINED;
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 err_page = clcf->error_pages->elts;
|
|
|
1678 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1679
|
|
|
1680 if (err_page[i].status == status) {
|
|
|
1681
|
|
511
|
1682 if (status == NGX_HTTP_UNAUTHORIZED
|
|
|
1683 && u->headers_in.www_authenticate)
|
|
|
1684 {
|
|
420
|
1685 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1686
|
|
|
1687 if (h == NULL) {
|
|
|
1688 ngx_http_upstream_finalize_request(r, u,
|
|
|
1689 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1690 return NGX_OK;
|
|
|
1691 }
|
|
|
1692
|
|
|
1693 *h = *u->headers_in.www_authenticate;
|
|
|
1694
|
|
|
1695 r->headers_out.www_authenticate = h;
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1699
|
|
|
1700 return NGX_OK;
|
|
|
1701 }
|
|
|
1702 }
|
|
|
1703
|
|
|
1704 return NGX_DECLINED;
|
|
|
1705 }
|
|
|
1706
|
|
|
1707
|
|
|
1708 static ngx_int_t
|
|
294
|
1709 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1710 {
|
|
|
1711 int err;
|
|
|
1712 socklen_t len;
|
|
|
1713
|
|
|
1714 #if (NGX_HAVE_KQUEUE)
|
|
|
1715
|
|
|
1716 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1717 if (c->write->pending_eof) {
|
|
336
|
1718 c->log->action = "connecting to upstream";
|
|
296
|
1719 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1720 "kevent() reported that connect() failed");
|
|
|
1721 return NGX_ERROR;
|
|
|
1722 }
|
|
294
|
1723
|
|
|
1724 } else
|
|
|
1725 #endif
|
|
|
1726 {
|
|
296
|
1727 err = 0;
|
|
|
1728 len = sizeof(int);
|
|
|
1729
|
|
|
1730 /*
|
|
|
1731 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1732 * Solaris returns -1 and sets errno
|
|
|
1733 */
|
|
|
1734
|
|
|
1735 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1736 == -1)
|
|
|
1737 {
|
|
|
1738 err = ngx_errno;
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 if (err) {
|
|
336
|
1742 c->log->action = "connecting to upstream";
|
|
296
|
1743 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1744 return NGX_ERROR;
|
|
|
1745 }
|
|
294
|
1746 }
|
|
|
1747
|
|
|
1748 return NGX_OK;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751
|
|
473
|
1752 static ngx_int_t
|
|
|
1753 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1754 {
|
|
|
1755 ngx_str_t *uri, args;
|
|
|
1756 ngx_uint_t i, flags;
|
|
|
1757 ngx_list_part_t *part;
|
|
|
1758 ngx_table_elt_t *h;
|
|
|
1759 ngx_http_upstream_header_t *hh;
|
|
|
1760 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1761
|
|
|
1762 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1763
|
|
493
|
1764 if (u->headers_in.x_accel_redirect
|
|
|
1765 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
|
1766 {
|
|
473
|
1767 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1768
|
|
|
1769 part = &u->headers_in.headers.part;
|
|
|
1770 h = part->elts;
|
|
|
1771
|
|
|
1772 for (i = 0; /* void */; i++) {
|
|
|
1773
|
|
|
1774 if (i >= part->nelts) {
|
|
|
1775 if (part->next == NULL) {
|
|
|
1776 break;
|
|
|
1777 }
|
|
|
1778
|
|
|
1779 part = part->next;
|
|
|
1780 h = part->elts;
|
|
|
1781 i = 0;
|
|
|
1782 }
|
|
|
1783
|
|
|
1784 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1785 h[i].lowcase_key, h[i].key.len);
|
|
|
1786
|
|
|
1787 if (hh && hh->redirect) {
|
|
|
1788 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1789 ngx_http_finalize_request(r,
|
|
|
1790 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1791 return NGX_DONE;
|
|
|
1792 }
|
|
|
1793 }
|
|
|
1794 }
|
|
|
1795
|
|
|
1796 uri = &u->headers_in.x_accel_redirect->value;
|
|
|
1797 args.len = 0;
|
|
|
1798 args.data = NULL;
|
|
542
|
1799 flags = NGX_HTTP_LOG_UNSAFE;
|
|
473
|
1800
|
|
|
1801 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1802 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
|
1803 return NGX_DONE;
|
|
|
1804 }
|
|
|
1805
|
|
|
1806 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1807 r->zero_in_uri = 1;
|
|
|
1808 }
|
|
|
1809
|
|
|
1810 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1811 r->method = NGX_HTTP_GET;
|
|
|
1812 }
|
|
|
1813
|
|
|
1814 r->valid_unparsed_uri = 0;
|
|
|
1815
|
|
|
1816 ngx_http_internal_redirect(r, uri, &args);
|
|
537
|
1817 ngx_http_finalize_request(r, NGX_DONE);
|
|
473
|
1818 return NGX_DONE;
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 part = &u->headers_in.headers.part;
|
|
|
1822 h = part->elts;
|
|
|
1823
|
|
|
1824 for (i = 0; /* void */; i++) {
|
|
|
1825
|
|
|
1826 if (i >= part->nelts) {
|
|
|
1827 if (part->next == NULL) {
|
|
|
1828 break;
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 part = part->next;
|
|
|
1832 h = part->elts;
|
|
|
1833 i = 0;
|
|
|
1834 }
|
|
|
1835
|
|
|
1836 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1837 h[i].lowcase_key, h[i].key.len))
|
|
|
1838 {
|
|
|
1839 continue;
|
|
|
1840 }
|
|
|
1841
|
|
|
1842 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1843 h[i].lowcase_key, h[i].key.len);
|
|
|
1844
|
|
|
1845 if (hh) {
|
|
|
1846 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1847 ngx_http_upstream_finalize_request(r, u,
|
|
|
1848 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1849 return NGX_DONE;
|
|
|
1850 }
|
|
|
1851
|
|
|
1852 continue;
|
|
|
1853 }
|
|
|
1854
|
|
|
1855 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1856 ngx_http_upstream_finalize_request(r, u,
|
|
|
1857 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1858 return NGX_DONE;
|
|
|
1859 }
|
|
|
1860 }
|
|
|
1861
|
|
|
1862 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1863 r->headers_out.server->hash = 0;
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1867 r->headers_out.date->hash = 0;
|
|
|
1868 }
|
|
|
1869
|
|
|
1870 r->headers_out.status = u->headers_in.status_n;
|
|
|
1871 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1872
|
|
|
1873 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1874
|
|
|
1875 if (r->headers_out.content_length_n != -1) {
|
|
|
1876 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1877
|
|
|
1878 } else {
|
|
|
1879 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 return NGX_OK;
|
|
|
1883 }
|
|
|
1884
|
|
|
1885
|
|
248
|
1886 static void
|
|
439
|
1887 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1888 ngx_http_upstream_t *u)
|
|
248
|
1889 {
|
|
439
|
1890 size_t size;
|
|
|
1891 ssize_t n;
|
|
|
1892 ngx_buf_t *b;
|
|
|
1893 ngx_event_t *rev;
|
|
|
1894 ngx_connection_t *c;
|
|
|
1895
|
|
|
1896 c = u->peer.connection;
|
|
|
1897 rev = c->read;
|
|
248
|
1898
|
|
|
1899 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1900 "http upstream process body on memory");
|
|
|
1901
|
|
|
1902 if (rev->timedout) {
|
|
|
1903 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1904 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1905 return;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 b = &u->buffer;
|
|
|
1909
|
|
|
1910 for ( ;; ) {
|
|
|
1911
|
|
|
1912 size = b->end - b->last;
|
|
|
1913
|
|
|
1914 if (size == 0) {
|
|
|
1915 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1916 "upstream buffer is too small to read repsonse");
|
|
|
1917 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1918 return;
|
|
|
1919 }
|
|
|
1920
|
|
|
1921 n = c->recv(c, b->last, size);
|
|
|
1922
|
|
|
1923 if (n == NGX_AGAIN) {
|
|
|
1924 break;
|
|
|
1925 }
|
|
|
1926
|
|
|
1927 if (n == 0 || n == NGX_ERROR) {
|
|
|
1928 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1929 return;
|
|
|
1930 }
|
|
|
1931
|
|
439
|
1932 u->state->response_length += n;
|
|
|
1933
|
|
248
|
1934 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1935 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1936 return;
|
|
|
1937 }
|
|
|
1938
|
|
|
1939 if (!rev->ready) {
|
|
|
1940 break;
|
|
|
1941 }
|
|
|
1942 }
|
|
|
1943
|
|
439
|
1944 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1945 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1946 return;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949 if (rev->active) {
|
|
|
1950 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1951
|
|
|
1952 } else if (rev->timer_set) {
|
|
|
1953 ngx_del_timer(rev);
|
|
|
1954 }
|
|
230
|
1955 }
|
|
|
1956
|
|
|
1957
|
|
|
1958 static void
|
|
|
1959 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1960 {
|
|
|
1961 int tcp_nodelay;
|
|
439
|
1962 ssize_t n;
|
|
230
|
1963 ngx_int_t rc;
|
|
|
1964 ngx_event_pipe_t *p;
|
|
|
1965 ngx_connection_t *c;
|
|
|
1966 ngx_http_core_loc_conf_t *clcf;
|
|
|
1967
|
|
58
|
1968 rc = ngx_http_send_header(r);
|
|
28
|
1969
|
|
489
|
1970 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1971 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1972 return;
|
|
|
1973 }
|
|
|
1974
|
|
489
|
1975 c = r->connection;
|
|
|
1976
|
|
|
1977 if (r->header_only) {
|
|
|
1978
|
|
|
1979 if (u->cacheable || u->store) {
|
|
|
1980
|
|
|
1981 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
1982 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1983 ngx_shutdown_socket_n " failed");
|
|
|
1984 }
|
|
|
1985
|
|
|
1986 r->read_event_handler = ngx_http_request_empty_handler;
|
|
|
1987 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
1988 c->error = 1;
|
|
|
1989
|
|
|
1990 } else {
|
|
|
1991 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1992 return;
|
|
|
1993 }
|
|
|
1994 }
|
|
|
1995
|
|
28
|
1996 u->header_sent = 1;
|
|
|
1997
|
|
122
|
1998 if (r->request_body && r->request_body->temp_file) {
|
|
473
|
1999 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
|
2000 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
2001 }
|
|
|
2002
|
|
130
|
2003 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2004
|
|
198
|
2005 if (!u->buffering) {
|
|
130
|
2006
|
|
|
2007 if (u->input_filter == NULL) {
|
|
|
2008 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
2009 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
2010 u->input_filter_ctx = r;
|
|
|
2011 }
|
|
|
2012
|
|
437
|
2013 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
2014 r->write_event_handler =
|
|
|
2015 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
2016
|
|
|
2017 r->limit_rate = 0;
|
|
|
2018
|
|
|
2019 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
2020 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2021 return;
|
|
|
2022 }
|
|
|
2023
|
|
132
|
2024 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
2025 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
2026
|
|
|
2027 tcp_nodelay = 1;
|
|
|
2028
|
|
|
2029 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
2030 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
2031 {
|
|
|
2032 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2033 "setsockopt(TCP_NODELAY) failed");
|
|
|
2034 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2035 return;
|
|
|
2036 }
|
|
|
2037
|
|
|
2038 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
2039 }
|
|
|
2040
|
|
439
|
2041 n = u->buffer.last - u->buffer.pos;
|
|
|
2042
|
|
|
2043 if (n) {
|
|
130
|
2044 u->buffer.last = u->buffer.pos;
|
|
|
2045
|
|
439
|
2046 u->state->response_length += n;
|
|
|
2047
|
|
|
2048 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
2049 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2050 return;
|
|
|
2051 }
|
|
|
2052
|
|
437
|
2053 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
2054
|
|
|
2055 } else {
|
|
|
2056 u->buffer.pos = u->buffer.start;
|
|
|
2057 u->buffer.last = u->buffer.start;
|
|
|
2058
|
|
|
2059 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
2060 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2061 return;
|
|
|
2062 }
|
|
336
|
2063
|
|
|
2064 if (u->peer.connection->read->ready) {
|
|
439
|
2065 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
2066 }
|
|
130
|
2067 }
|
|
|
2068
|
|
|
2069 return;
|
|
|
2070 }
|
|
|
2071
|
|
28
|
2072 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
2073
|
|
473
|
2074 #if (NGX_HTTP_CACHE)
|
|
|
2075
|
|
|
2076 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
|
2077 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
|
2078 r->cache->file.fd = NGX_INVALID_FILE;
|
|
28
|
2079 }
|
|
|
2080
|
|
340
|
2081 if (u->cacheable) {
|
|
473
|
2082 time_t now, valid;
|
|
|
2083
|
|
481
|
2084 now = ngx_time();
|
|
|
2085
|
|
|
2086 valid = r->cache->valid_sec;
|
|
|
2087
|
|
|
2088 if (valid == 0) {
|
|
|
2089 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
|
2090 u->headers_in.status_n);
|
|
|
2091 if (valid) {
|
|
|
2092 r->cache->valid_sec = now + valid;
|
|
|
2093 }
|
|
|
2094 }
|
|
|
2095
|
|
473
|
2096 if (valid) {
|
|
|
2097 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
|
2098 r->cache->date = now;
|
|
|
2099 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
|
2100
|
|
|
2101 if (r->headers_out.content_length_n != -1) {
|
|
|
2102 r->cache->length = r->cache->body_start
|
|
|
2103 + r->headers_out.content_length_n;
|
|
|
2104 }
|
|
|
2105
|
|
|
2106 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
|
2107
|
|
|
2108 } else {
|
|
|
2109 u->cacheable = 0;
|
|
489
|
2110 r->headers_out.last_modified_time = -1;
|
|
473
|
2111 }
|
|
28
|
2112 }
|
|
|
2113
|
|
487
|
2114 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2115 "http cacheable: %d", u->cacheable);
|
|
|
2116
|
|
535
|
2117 if (u->cacheable == 0 && r->cache) {
|
|
|
2118 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
|
2119 }
|
|
|
2120
|
|
28
|
2121 #endif
|
|
|
2122
|
|
130
|
2123 p = u->pipe;
|
|
28
|
2124
|
|
|
2125 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
2126 p->output_ctx = r;
|
|
|
2127 p->tag = u->output.tag;
|
|
126
|
2128 p->bufs = u->conf->bufs;
|
|
28
|
2129 p->busy_size = u->conf->busy_buffers_size;
|
|
|
2130 p->upstream = u->peer.connection;
|
|
132
|
2131 p->downstream = c;
|
|
28
|
2132 p->pool = r->pool;
|
|
132
|
2133 p->log = c->log;
|
|
126
|
2134
|
|
340
|
2135 p->cacheable = u->cacheable || u->store;
|
|
28
|
2136
|
|
50
|
2137 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2138 if (p->temp_file == NULL) {
|
|
28
|
2139 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2140 return;
|
|
|
2141 }
|
|
|
2142
|
|
|
2143 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
2144 p->temp_file->file.log = c->log;
|
|
28
|
2145 p->temp_file->path = u->conf->temp_path;
|
|
|
2146 p->temp_file->pool = r->pool;
|
|
126
|
2147
|
|
473
|
2148 if (p->cacheable) {
|
|
28
|
2149 p->temp_file->persistent = 1;
|
|
318
|
2150
|
|
28
|
2151 } else {
|
|
216
|
2152 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
2153 p->temp_file->warn = "an upstream response is buffered "
|
|
|
2154 "to a temporary file";
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
2158 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
2159
|
|
50
|
2160 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
2161 if (p->preread_bufs == NULL) {
|
|
28
|
2162 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2163 return;
|
|
|
2164 }
|
|
318
|
2165
|
|
130
|
2166 p->preread_bufs->buf = &u->buffer;
|
|
28
|
2167 p->preread_bufs->next = NULL;
|
|
130
|
2168 u->buffer.recycled = 1;
|
|
|
2169
|
|
|
2170 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
2171
|
|
340
|
2172 if (u->cacheable) {
|
|
318
|
2173
|
|
28
|
2174 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
2175 if (p->buf_to_file == NULL) {
|
|
|
2176 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2177 return;
|
|
|
2178 }
|
|
318
|
2179
|
|
130
|
2180 p->buf_to_file->pos = u->buffer.start;
|
|
|
2181 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
2182 p->buf_to_file->temporary = 1;
|
|
|
2183 }
|
|
|
2184
|
|
|
2185 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
2186 /* the posted aio operation may currupt a shadow buffer */
|
|
|
2187 p->single_buf = 1;
|
|
|
2188 }
|
|
|
2189
|
|
|
2190 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
2191 p->free_bufs = 1;
|
|
|
2192
|
|
|
2193 /*
|
|
130
|
2194 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
2195 * as though these bytes were read
|
|
|
2196 */
|
|
130
|
2197 u->buffer.last = u->buffer.pos;
|
|
28
|
2198
|
|
|
2199 if (u->conf->cyclic_temp_file) {
|
|
|
2200
|
|
|
2201 /*
|
|
|
2202 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
2203 * because the writing a new data may interfere with sendfile()
|
|
|
2204 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
2205 */
|
|
|
2206
|
|
|
2207 p->cyclic_temp_file = 1;
|
|
132
|
2208 c->sendfile = 0;
|
|
28
|
2209
|
|
|
2210 } else {
|
|
|
2211 p->cyclic_temp_file = 0;
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 p->read_timeout = u->conf->read_timeout;
|
|
|
2215 p->send_timeout = clcf->send_timeout;
|
|
|
2216 p->send_lowat = clcf->send_lowat;
|
|
|
2217
|
|
437
|
2218 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
2219 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
2220
|
|
439
|
2221 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
2222 }
|
|
|
2223
|
|
|
2224
|
|
36
|
2225 static void
|
|
130
|
2226 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
2227 {
|
|
437
|
2228 ngx_event_t *wev;
|
|
|
2229 ngx_connection_t *c;
|
|
|
2230 ngx_http_upstream_t *u;
|
|
|
2231
|
|
|
2232 c = r->connection;
|
|
|
2233 u = r->upstream;
|
|
|
2234 wev = c->write;
|
|
|
2235
|
|
|
2236 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2237 "http upstream process non buffered downstream");
|
|
|
2238
|
|
|
2239 c->log->action = "sending to client";
|
|
|
2240
|
|
|
2241 if (wev->timedout) {
|
|
|
2242 c->timedout = 1;
|
|
|
2243 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
2244 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2245 return;
|
|
|
2246 }
|
|
|
2247
|
|
|
2248 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
2249 }
|
|
|
2250
|
|
|
2251
|
|
|
2252 static void
|
|
439
|
2253 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
2254 ngx_http_upstream_t *u)
|
|
437
|
2255 {
|
|
439
|
2256 ngx_connection_t *c;
|
|
|
2257
|
|
|
2258 c = u->peer.connection;
|
|
437
|
2259
|
|
|
2260 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2261 "http upstream process non buffered upstream");
|
|
|
2262
|
|
|
2263 c->log->action = "reading upstream";
|
|
|
2264
|
|
439
|
2265 if (c->read->timedout) {
|
|
437
|
2266 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2267 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2268 return;
|
|
|
2269 }
|
|
|
2270
|
|
|
2271 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
2272 }
|
|
|
2273
|
|
|
2274
|
|
|
2275 static void
|
|
|
2276 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
2277 ngx_uint_t do_write)
|
|
130
|
2278 {
|
|
|
2279 size_t size;
|
|
|
2280 ssize_t n;
|
|
|
2281 ngx_buf_t *b;
|
|
132
|
2282 ngx_int_t rc;
|
|
437
|
2283 ngx_connection_t *downstream, *upstream;
|
|
130
|
2284 ngx_http_upstream_t *u;
|
|
|
2285 ngx_http_core_loc_conf_t *clcf;
|
|
|
2286
|
|
244
|
2287 u = r->upstream;
|
|
260
|
2288 downstream = r->connection;
|
|
|
2289 upstream = u->peer.connection;
|
|
130
|
2290
|
|
|
2291 b = &u->buffer;
|
|
|
2292
|
|
437
|
2293 do_write = do_write || u->length == 0;
|
|
130
|
2294
|
|
|
2295 for ( ;; ) {
|
|
|
2296
|
|
|
2297 if (do_write) {
|
|
|
2298
|
|
|
2299 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
2300 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
2301
|
|
|
2302 if (rc == NGX_ERROR) {
|
|
130
|
2303 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2304 return;
|
|
|
2305 }
|
|
|
2306
|
|
|
2307 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
2308 &u->out_bufs, u->output.tag);
|
|
|
2309 }
|
|
|
2310
|
|
|
2311 if (u->busy_bufs == NULL) {
|
|
|
2312
|
|
|
2313 if (u->length == 0
|
|
260
|
2314 || upstream->read->eof
|
|
|
2315 || upstream->read->error)
|
|
130
|
2316 {
|
|
|
2317 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2318 return;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 b->pos = b->start;
|
|
|
2322 b->last = b->start;
|
|
|
2323 }
|
|
|
2324 }
|
|
|
2325
|
|
|
2326 size = b->end - b->last;
|
|
|
2327
|
|
|
2328 if (size > u->length) {
|
|
|
2329 size = u->length;
|
|
|
2330 }
|
|
|
2331
|
|
260
|
2332 if (size && upstream->read->ready) {
|
|
|
2333
|
|
|
2334 n = upstream->recv(upstream, b->last, size);
|
|
130
|
2335
|
|
|
2336 if (n == NGX_AGAIN) {
|
|
|
2337 break;
|
|
|
2338 }
|
|
|
2339
|
|
|
2340 if (n > 0) {
|
|
439
|
2341 u->state->response_length += n;
|
|
|
2342
|
|
130
|
2343 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
2344 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2345 return;
|
|
|
2346 }
|
|
|
2347 }
|
|
|
2348
|
|
|
2349 do_write = 1;
|
|
|
2350
|
|
|
2351 continue;
|
|
|
2352 }
|
|
|
2353
|
|
|
2354 break;
|
|
|
2355 }
|
|
|
2356
|
|
437
|
2357 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2358
|
|
260
|
2359 if (downstream->data == r) {
|
|
|
2360 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
435
|
2361 != NGX_OK)
|
|
132
|
2362 {
|
|
|
2363 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2364 return;
|
|
|
2365 }
|
|
130
|
2366 }
|
|
|
2367
|
|
276
|
2368 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2369 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2370
|
|
|
2371 } else if (downstream->write->timer_set) {
|
|
|
2372 ngx_del_timer(downstream->write);
|
|
130
|
2373 }
|
|
|
2374
|
|
435
|
2375 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2376 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2377 return;
|
|
|
2378 }
|
|
|
2379
|
|
276
|
2380 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2381 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2382
|
|
|
2383 } else if (upstream->read->timer_set) {
|
|
|
2384 ngx_del_timer(upstream->read);
|
|
130
|
2385 }
|
|
|
2386 }
|
|
|
2387
|
|
|
2388
|
|
|
2389 static ngx_int_t
|
|
|
2390 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2391 {
|
|
|
2392 return NGX_OK;
|
|
|
2393 }
|
|
|
2394
|
|
|
2395
|
|
|
2396 static ngx_int_t
|
|
|
2397 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2398 {
|
|
|
2399 ngx_http_request_t *r = data;
|
|
|
2400
|
|
|
2401 ngx_buf_t *b;
|
|
|
2402 ngx_chain_t *cl, **ll;
|
|
|
2403 ngx_http_upstream_t *u;
|
|
|
2404
|
|
|
2405 u = r->upstream;
|
|
|
2406
|
|
|
2407 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2408 ll = &cl->next;
|
|
|
2409 }
|
|
|
2410
|
|
|
2411 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2412 if (cl == NULL) {
|
|
|
2413 return NGX_ERROR;
|
|
|
2414 }
|
|
|
2415
|
|
|
2416 *ll = cl;
|
|
|
2417
|
|
|
2418 cl->buf->flush = 1;
|
|
|
2419 cl->buf->memory = 1;
|
|
|
2420
|
|
|
2421 b = &u->buffer;
|
|
|
2422
|
|
|
2423 cl->buf->pos = b->last;
|
|
|
2424 b->last += bytes;
|
|
|
2425 cl->buf->last = b->last;
|
|
366
|
2426 cl->buf->tag = u->output.tag;
|
|
130
|
2427
|
|
|
2428 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2429 return NGX_OK;
|
|
|
2430 }
|
|
|
2431
|
|
|
2432 u->length -= bytes;
|
|
|
2433
|
|
|
2434 return NGX_OK;
|
|
|
2435 }
|
|
|
2436
|
|
|
2437
|
|
|
2438 static void
|
|
58
|
2439 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2440 {
|
|
437
|
2441 ngx_event_t *wev;
|
|
|
2442 ngx_connection_t *c;
|
|
58
|
2443 ngx_event_pipe_t *p;
|
|
28
|
2444 ngx_http_upstream_t *u;
|
|
|
2445
|
|
437
|
2446 c = r->connection;
|
|
28
|
2447 u = r->upstream;
|
|
130
|
2448 p = u->pipe;
|
|
437
|
2449 wev = c->write;
|
|
|
2450
|
|
|
2451 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2452 "http upstream process downstream");
|
|
|
2453
|
|
|
2454 c->log->action = "sending to client";
|
|
|
2455
|
|
|
2456 if (wev->timedout) {
|
|
|
2457
|
|
|
2458 if (wev->delayed) {
|
|
|
2459
|
|
|
2460 wev->timedout = 0;
|
|
|
2461 wev->delayed = 0;
|
|
|
2462
|
|
|
2463 if (!wev->ready) {
|
|
|
2464 ngx_add_timer(wev, p->send_timeout);
|
|
|
2465
|
|
|
2466 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2467 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2468 }
|
|
|
2469
|
|
|
2470 return;
|
|
|
2471 }
|
|
|
2472
|
|
|
2473 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2474 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2475 return;
|
|
76
|
2476 }
|
|
28
|
2477
|
|
|
2478 } else {
|
|
437
|
2479 p->downstream_error = 1;
|
|
|
2480 c->timedout = 1;
|
|
|
2481 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2482 }
|
|
|
2483
|
|
|
2484 } else {
|
|
437
|
2485
|
|
|
2486 if (wev->delayed) {
|
|
|
2487
|
|
76
|
2488 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2489 "http downstream delayed");
|
|
|
2490
|
|
437
|
2491 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
435
|
2492 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2493 }
|
|
|
2494
|
|
|
2495 return;
|
|
|
2496 }
|
|
|
2497
|
|
437
|
2498 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
28
|
2499 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2500 return;
|
|
|
2501 }
|
|
|
2502 }
|
|
126
|
2503
|
|
437
|
2504 ngx_http_upstream_process_request(r);
|
|
|
2505 }
|
|
|
2506
|
|
|
2507
|
|
|
2508 static void
|
|
439
|
2509 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2510 ngx_http_upstream_t *u)
|
|
437
|
2511 {
|
|
439
|
2512 ngx_connection_t *c;
|
|
|
2513
|
|
|
2514 c = u->peer.connection;
|
|
437
|
2515
|
|
|
2516 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2517 "http upstream process upstream");
|
|
|
2518
|
|
|
2519 c->log->action = "reading upstream";
|
|
|
2520
|
|
439
|
2521 if (c->read->timedout) {
|
|
|
2522 u->pipe->upstream_error = 1;
|
|
437
|
2523 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2524
|
|
|
2525 } else {
|
|
439
|
2526 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
437
|
2527 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2528 return;
|
|
|
2529 }
|
|
|
2530 }
|
|
|
2531
|
|
|
2532 ngx_http_upstream_process_request(r);
|
|
|
2533 }
|
|
|
2534
|
|
|
2535
|
|
|
2536 static void
|
|
|
2537 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2538 {
|
|
447
|
2539 ngx_uint_t del;
|
|
437
|
2540 ngx_temp_file_t *tf;
|
|
|
2541 ngx_event_pipe_t *p;
|
|
|
2542 ngx_http_upstream_t *u;
|
|
|
2543
|
|
|
2544 u = r->upstream;
|
|
|
2545 p = u->pipe;
|
|
|
2546
|
|
28
|
2547 if (u->peer.connection) {
|
|
|
2548
|
|
318
|
2549 if (u->store) {
|
|
|
2550
|
|
447
|
2551 del = p->upstream_error;
|
|
|
2552
|
|
364
|
2553 tf = u->pipe->temp_file;
|
|
|
2554
|
|
449
|
2555 if (p->upstream_eof || p->upstream_done) {
|
|
447
|
2556
|
|
|
2557 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2558 && (u->headers_in.content_length_n == -1
|
|
|
2559 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2560 {
|
|
|
2561 ngx_http_upstream_store(r, u);
|
|
|
2562
|
|
|
2563 } else {
|
|
|
2564 del = 1;
|
|
|
2565 }
|
|
|
2566 }
|
|
|
2567
|
|
|
2568 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
2569
|
|
364
|
2570 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2571
|
|
318
|
2572 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2573 ngx_delete_file_n " \"%s\" failed",
|
|
|
2574 u->pipe->temp_file->file.name.data);
|
|
|
2575 }
|
|
|
2576 }
|
|
|
2577 }
|
|
|
2578
|
|
473
|
2579 #if (NGX_HTTP_CACHE)
|
|
|
2580
|
|
|
2581 if (u->cacheable) {
|
|
|
2582
|
|
|
2583 if (p->upstream_done) {
|
|
|
2584 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2585
|
|
|
2586 } else if (p->upstream_eof) {
|
|
|
2587
|
|
|
2588 /* TODO: check length & update cache */
|
|
|
2589
|
|
|
2590 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2591
|
|
|
2592 } else if (p->upstream_error) {
|
|
|
2593 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2594 }
|
|
|
2595 }
|
|
|
2596
|
|
|
2597 #endif
|
|
|
2598
|
|
|
2599 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
437
|
2600 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2601 "http upstream exit: %p", p->out);
|
|
28
|
2602 #if 0
|
|
|
2603 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2604 #endif
|
|
|
2605 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2606 return;
|
|
|
2607 }
|
|
|
2608 }
|
|
|
2609
|
|
|
2610 if (p->downstream_error) {
|
|
437
|
2611 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2612 "http upstream downstream error");
|
|
28
|
2613
|
|
491
|
2614 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
2615 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2616 }
|
|
|
2617 }
|
|
|
2618 }
|
|
|
2619
|
|
|
2620
|
|
36
|
2621 static void
|
|
318
|
2622 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2623 {
|
|
370
|
2624 size_t root;
|
|
|
2625 time_t lm;
|
|
|
2626 ngx_str_t path;
|
|
|
2627 ngx_temp_file_t *tf;
|
|
|
2628 ngx_ext_rename_file_t ext;
|
|
318
|
2629
|
|
358
|
2630 tf = u->pipe->temp_file;
|
|
|
2631
|
|
|
2632 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2633
|
|
|
2634 /* create file for empty 200 response */
|
|
|
2635
|
|
|
2636 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2637 if (tf == NULL) {
|
|
|
2638 return;
|
|
|
2639 }
|
|
|
2640
|
|
|
2641 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2642 tf->file.log = r->connection->log;
|
|
|
2643 tf->path = u->conf->temp_path;
|
|
|
2644 tf->pool = r->pool;
|
|
|
2645 tf->persistent = 1;
|
|
|
2646
|
|
|
2647 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2648 tf->persistent, tf->clean, tf->access)
|
|
|
2649 != NGX_OK)
|
|
|
2650 {
|
|
|
2651 return;
|
|
|
2652 }
|
|
|
2653
|
|
|
2654 u->pipe->temp_file = tf;
|
|
|
2655 }
|
|
|
2656
|
|
370
|
2657 ext.access = u->conf->store_access;
|
|
439
|
2658 ext.path_access = u->conf->store_access;
|
|
370
|
2659 ext.time = -1;
|
|
|
2660 ext.create_path = 1;
|
|
|
2661 ext.delete_file = 1;
|
|
|
2662 ext.log = r->connection->log;
|
|
318
|
2663
|
|
356
|
2664 if (u->headers_in.last_modified) {
|
|
|
2665
|
|
370
|
2666 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2667 u->headers_in.last_modified->value.len);
|
|
318
|
2668
|
|
|
2669 if (lm != NGX_ERROR) {
|
|
370
|
2670 ext.time = lm;
|
|
|
2671 ext.fd = tf->file.fd;
|
|
318
|
2672 }
|
|
|
2673 }
|
|
|
2674
|
|
320
|
2675 if (u->conf->store_lengths == NULL) {
|
|
|
2676
|
|
|
2677 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2678
|
|
|
2679 } else {
|
|
|
2680 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2681 u->conf->store_values->elts)
|
|
|
2682 == NULL)
|
|
|
2683 {
|
|
|
2684 return;
|
|
|
2685 }
|
|
|
2686 }
|
|
318
|
2687
|
|
527
|
2688 path.len--;
|
|
|
2689
|
|
318
|
2690 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2691 "upstream stores \"%s\" to \"%s\"",
|
|
|
2692 tf->file.name.data, path.data);
|
|
|
2693
|
|
|
2694 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2695 }
|
|
|
2696
|
|
|
2697
|
|
|
2698 static void
|
|
439
|
2699 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2700 {
|
|
439
|
2701 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2702 "http upstream dummy handler");
|
|
|
2703 }
|
|
|
2704
|
|
|
2705
|
|
36
|
2706 static void
|
|
|
2707 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2708 ngx_uint_t ft_type)
|
|
28
|
2709 {
|
|
260
|
2710 ngx_uint_t status, state;
|
|
28
|
2711
|
|
|
2712 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2713 "http next upstream, %xi", ft_type);
|
|
28
|
2714
|
|
|
2715 #if 0
|
|
|
2716 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2717 #endif
|
|
|
2718
|
|
74
|
2719 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2720 state = NGX_PEER_NEXT;
|
|
74
|
2721 } else {
|
|
260
|
2722 state = NGX_PEER_FAILED;
|
|
28
|
2723 }
|
|
74
|
2724
|
|
326
|
2725 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2726 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2727 }
|
|
74
|
2728
|
|
28
|
2729 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2730 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2731 "upstream timed out");
|
|
|
2732 }
|
|
126
|
2733
|
|
28
|
2734 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2735 status = 0;
|
|
|
2736
|
|
|
2737 } else {
|
|
|
2738 switch(ft_type) {
|
|
|
2739
|
|
|
2740 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2741 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2742 break;
|
|
|
2743
|
|
|
2744 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2745 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2746 break;
|
|
|
2747
|
|
|
2748 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2749 status = NGX_HTTP_NOT_FOUND;
|
|
|
2750 break;
|
|
|
2751
|
|
|
2752 /*
|
|
|
2753 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2754 * never reach here
|
|
|
2755 */
|
|
|
2756
|
|
|
2757 default:
|
|
|
2758 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2759 }
|
|
|
2760 }
|
|
|
2761
|
|
132
|
2762 if (r->connection->error) {
|
|
28
|
2763 ngx_http_upstream_finalize_request(r, u,
|
|
|
2764 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2765 return;
|
|
|
2766 }
|
|
|
2767
|
|
|
2768 if (status) {
|
|
|
2769 u->state->status = status;
|
|
|
2770
|
|
74
|
2771 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2772
|
|
|
2773 #if (NGX_HTTP_CACHE)
|
|
|
2774
|
|
511
|
2775 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
2776 && (u->conf->cache_use_stale & ft_type))
|
|
|
2777 {
|
|
495
|
2778 ngx_int_t rc;
|
|
|
2779
|
|
|
2780 rc = u->reinit_request(r);
|
|
|
2781
|
|
|
2782 if (rc == NGX_OK) {
|
|
511
|
2783 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
495
|
2784 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
2785 }
|
|
|
2786
|
|
|
2787 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
2788 return;
|
|
|
2789 }
|
|
|
2790 #endif
|
|
|
2791
|
|
|
2792 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2793 return;
|
|
|
2794 }
|
|
|
2795 }
|
|
|
2796
|
|
|
2797 if (u->peer.connection) {
|
|
|
2798 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2799 "close http upstream connection: %d",
|
|
|
2800 u->peer.connection->fd);
|
|
126
|
2801 #if (NGX_HTTP_SSL)
|
|
260
|
2802
|
|
126
|
2803 if (u->peer.connection->ssl) {
|
|
260
|
2804 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2805 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2806
|
|
|
2807 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2808 }
|
|
|
2809 #endif
|
|
260
|
2810
|
|
28
|
2811 ngx_close_connection(u->peer.connection);
|
|
|
2812 }
|
|
|
2813
|
|
|
2814 #if 0
|
|
|
2815 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2816 ngx_http_upstream_busy_lock(p);
|
|
|
2817 return;
|
|
|
2818 }
|
|
|
2819 #endif
|
|
|
2820
|
|
|
2821 ngx_http_upstream_connect(r, u);
|
|
|
2822 }
|
|
|
2823
|
|
|
2824
|
|
36
|
2825 static void
|
|
118
|
2826 ngx_http_upstream_cleanup(void *data)
|
|
|
2827 {
|
|
|
2828 ngx_http_request_t *r = data;
|
|
|
2829
|
|
356
|
2830 ngx_http_upstream_t *u;
|
|
|
2831
|
|
118
|
2832 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2833 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2834
|
|
356
|
2835 u = r->upstream;
|
|
|
2836
|
|
|
2837 if (u->resolved && u->resolved->ctx) {
|
|
|
2838 ngx_resolve_name_done(u->resolved->ctx);
|
|
542
|
2839 u->resolved->ctx = NULL;
|
|
348
|
2840 }
|
|
|
2841
|
|
356
|
2842 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2843 }
|
|
|
2844
|
|
|
2845
|
|
|
2846 static void
|
|
36
|
2847 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2848 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2849 {
|
|
262
|
2850 ngx_time_t *tp;
|
|
112
|
2851
|
|
32
|
2852 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2853 "finalize http upstream request: %i", rc);
|
|
28
|
2854
|
|
441
|
2855 if (u->cleanup) {
|
|
|
2856 *u->cleanup = NULL;
|
|
|
2857 }
|
|
118
|
2858
|
|
542
|
2859 if (u->resolved && u->resolved->ctx) {
|
|
|
2860 ngx_resolve_name_done(u->resolved->ctx);
|
|
|
2861 u->resolved->ctx = NULL;
|
|
|
2862 }
|
|
|
2863
|
|
348
|
2864 if (u->state && u->state->response_sec) {
|
|
112
|
2865 tp = ngx_timeofday();
|
|
262
|
2866 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2867 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
439
|
2868
|
|
|
2869 if (u->pipe) {
|
|
|
2870 u->state->response_length = u->pipe->read_length;
|
|
|
2871 }
|
|
112
|
2872 }
|
|
|
2873
|
|
28
|
2874 u->finalize_request(r, rc);
|
|
|
2875
|
|
348
|
2876 if (u->peer.free) {
|
|
|
2877 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2878 }
|
|
260
|
2879
|
|
28
|
2880 if (u->peer.connection) {
|
|
260
|
2881
|
|
126
|
2882 #if (NGX_HTTP_SSL)
|
|
|
2883
|
|
|
2884 /* TODO: do not shutdown persistent connection */
|
|
|
2885
|
|
|
2886 if (u->peer.connection->ssl) {
|
|
260
|
2887
|
|
|
2888 /*
|
|
|
2889 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2890 * and do not wait its "close notify" shutdown alert.
|
|
|
2891 * It is acceptable according to the TLS standard.
|
|
|
2892 */
|
|
|
2893
|
|
|
2894 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2895
|
|
|
2896 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2897 }
|
|
|
2898 #endif
|
|
260
|
2899
|
|
|
2900 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2901 "close http upstream connection: %d",
|
|
|
2902 u->peer.connection->fd);
|
|
|
2903
|
|
28
|
2904 ngx_close_connection(u->peer.connection);
|
|
|
2905 }
|
|
|
2906
|
|
32
|
2907 u->peer.connection = NULL;
|
|
|
2908
|
|
130
|
2909 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2910 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2911 "http upstream temp fd: %d",
|
|
130
|
2912 u->pipe->temp_file->file.fd);
|
|
28
|
2913 }
|
|
|
2914
|
|
473
|
2915 #if (NGX_HTTP_CACHE)
|
|
|
2916
|
|
523
|
2917 if (u->cacheable && r->cache) {
|
|
473
|
2918 time_t valid;
|
|
|
2919
|
|
28
|
2920 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2921 "http upstream cache fd: %d",
|
|
473
|
2922 r->cache->file.fd);
|
|
|
2923
|
|
|
2924 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
|
2925
|
|
|
2926 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
|
2927
|
|
|
2928 if (valid) {
|
|
|
2929 r->cache->valid_sec = ngx_time() + valid;
|
|
|
2930 r->cache->error = rc;
|
|
|
2931 }
|
|
|
2932 }
|
|
|
2933
|
|
|
2934 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2935 }
|
|
473
|
2936
|
|
28
|
2937 #endif
|
|
|
2938
|
|
487
|
2939 if (u->header_sent
|
|
|
2940 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
473
|
2941 {
|
|
|
2942 rc = 0;
|
|
|
2943 }
|
|
|
2944
|
|
64
|
2945 if (rc == NGX_DECLINED) {
|
|
|
2946 return;
|
|
|
2947 }
|
|
|
2948
|
|
32
|
2949 r->connection->log->action = "sending to client";
|
|
|
2950
|
|
515
|
2951 if (rc == 0) {
|
|
435
|
2952 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2953 }
|
|
|
2954
|
|
|
2955 ngx_http_finalize_request(r, rc);
|
|
|
2956 }
|
|
|
2957
|
|
|
2958
|
|
58
|
2959 static ngx_int_t
|
|
|
2960 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2961 ngx_uint_t offset)
|
|
126
|
2962 {
|
|
58
|
2963 ngx_table_elt_t **ph;
|
|
126
|
2964
|
|
58
|
2965 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2966
|
|
|
2967 if (*ph == NULL) {
|
|
|
2968 *ph = h;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 return NGX_OK;
|
|
|
2972 }
|
|
|
2973
|
|
|
2974
|
|
|
2975 static ngx_int_t
|
|
481
|
2976 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2977 ngx_uint_t offset)
|
|
|
2978 {
|
|
|
2979 return NGX_OK;
|
|
|
2980 }
|
|
|
2981
|
|
|
2982
|
|
|
2983 static ngx_int_t
|
|
|
2984 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
|
58
|
2985 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2986 {
|
|
493
|
2987 ngx_array_t *pa;
|
|
|
2988 ngx_table_elt_t **ph;
|
|
|
2989 ngx_http_upstream_t *u;
|
|
|
2990
|
|
|
2991 u = r->upstream;
|
|
|
2992 pa = &u->headers_in.cache_control;
|
|
58
|
2993
|
|
|
2994 if (pa->elts == NULL) {
|
|
|
2995 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2996 {
|
|
|
2997 return NGX_ERROR;
|
|
|
2998 }
|
|
|
2999 }
|
|
|
3000
|
|
|
3001 ph = ngx_array_push(pa);
|
|
|
3002 if (ph == NULL) {
|
|
|
3003 return NGX_ERROR;
|
|
|
3004 }
|
|
|
3005
|
|
|
3006 *ph = h;
|
|
|
3007
|
|
489
|
3008 #if (NGX_HTTP_CACHE)
|
|
|
3009 {
|
|
|
3010 u_char *p, *last;
|
|
|
3011 ngx_int_t n;
|
|
|
3012
|
|
493
|
3013 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
|
3014 return NGX_OK;
|
|
|
3015 }
|
|
|
3016
|
|
481
|
3017 if (r->cache == NULL) {
|
|
|
3018 return NGX_OK;
|
|
|
3019 }
|
|
|
3020
|
|
|
3021 if (r->cache->valid_sec != 0) {
|
|
|
3022 return NGX_OK;
|
|
|
3023 }
|
|
|
3024
|
|
|
3025 last = h->value.data + h->value.len;
|
|
|
3026
|
|
|
3027 if (ngx_strlcasestrn(h->value.data, last, (u_char *) "no-cache", 8 - 1)
|
|
|
3028 != NULL)
|
|
|
3029 {
|
|
493
|
3030 u->cacheable = 0;
|
|
481
|
3031 return NGX_OK;
|
|
|
3032 }
|
|
|
3033
|
|
|
3034 p = ngx_strlcasestrn(h->value.data, last, (u_char *) "max-age=", 8 - 1);
|
|
|
3035
|
|
|
3036 if (p == NULL) {
|
|
|
3037 return NGX_OK;
|
|
|
3038 }
|
|
|
3039
|
|
|
3040 n = 0;
|
|
|
3041
|
|
|
3042 for (p += 8; p < last; p++) {
|
|
|
3043 if (*p == ';' || *p == ' ') {
|
|
|
3044 break;
|
|
|
3045 }
|
|
|
3046
|
|
|
3047 if (*p >= '0' && *p <= '9') {
|
|
|
3048 n = n * 10 + *p - '0';
|
|
|
3049 continue;
|
|
|
3050 }
|
|
|
3051
|
|
493
|
3052 u->cacheable = 0;
|
|
481
|
3053 return NGX_OK;
|
|
|
3054 }
|
|
|
3055
|
|
|
3056 if (n == 0) {
|
|
493
|
3057 u->cacheable = 0;
|
|
481
|
3058 return NGX_OK;
|
|
|
3059 }
|
|
|
3060
|
|
|
3061 r->cache->valid_sec = ngx_time() + n;
|
|
489
|
3062 }
|
|
|
3063 #endif
|
|
|
3064
|
|
58
|
3065 return NGX_OK;
|
|
|
3066 }
|
|
|
3067
|
|
|
3068
|
|
|
3069 static ngx_int_t
|
|
481
|
3070 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
58
|
3071 ngx_uint_t offset)
|
|
|
3072 {
|
|
493
|
3073 ngx_http_upstream_t *u;
|
|
|
3074
|
|
|
3075 u = r->upstream;
|
|
|
3076 u->headers_in.expires = h;
|
|
489
|
3077
|
|
|
3078 #if (NGX_HTTP_CACHE)
|
|
|
3079 {
|
|
481
|
3080 time_t expires;
|
|
|
3081
|
|
493
|
3082 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
|
3083 return NGX_OK;
|
|
|
3084 }
|
|
|
3085
|
|
481
|
3086 if (r->cache == NULL) {
|
|
|
3087 return NGX_OK;
|
|
|
3088 }
|
|
|
3089
|
|
|
3090 if (r->cache->valid_sec != 0) {
|
|
|
3091 return NGX_OK;
|
|
|
3092 }
|
|
|
3093
|
|
|
3094 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
|
3095
|
|
|
3096 if (expires == NGX_ERROR || expires < ngx_time()) {
|
|
493
|
3097 u->cacheable = 0;
|
|
481
|
3098 return NGX_OK;
|
|
|
3099 }
|
|
|
3100
|
|
|
3101 r->cache->valid_sec = expires;
|
|
489
|
3102 }
|
|
|
3103 #endif
|
|
481
|
3104
|
|
|
3105 return NGX_OK;
|
|
|
3106 }
|
|
|
3107
|
|
|
3108
|
|
|
3109 static ngx_int_t
|
|
|
3110 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
|
3111 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3112 {
|
|
493
|
3113 ngx_http_upstream_t *u;
|
|
|
3114
|
|
|
3115 u = r->upstream;
|
|
|
3116 u->headers_in.x_accel_expires = h;
|
|
489
|
3117
|
|
|
3118 #if (NGX_HTTP_CACHE)
|
|
|
3119 {
|
|
481
|
3120 u_char *p;
|
|
|
3121 size_t len;
|
|
|
3122 ngx_int_t n;
|
|
|
3123
|
|
493
|
3124 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
|
3125 return NGX_OK;
|
|
|
3126 }
|
|
|
3127
|
|
481
|
3128 if (r->cache == NULL) {
|
|
|
3129 return NGX_OK;
|
|
|
3130 }
|
|
|
3131
|
|
|
3132 len = h->value.len;
|
|
|
3133 p = h->value.data;
|
|
|
3134
|
|
|
3135 if (p[0] != '@') {
|
|
|
3136 n = ngx_atoi(p, len);
|
|
|
3137
|
|
|
3138 switch (n) {
|
|
|
3139 case 0:
|
|
493
|
3140 u->cacheable = 0;
|
|
481
|
3141 case NGX_ERROR:
|
|
|
3142 return NGX_OK;
|
|
|
3143
|
|
|
3144 default:
|
|
|
3145 r->cache->valid_sec = ngx_time() + n;
|
|
|
3146 return NGX_OK;
|
|
|
3147 }
|
|
|
3148 }
|
|
|
3149
|
|
|
3150 p++;
|
|
|
3151 len--;
|
|
|
3152
|
|
|
3153 n = ngx_atoi(p, len);
|
|
|
3154
|
|
|
3155 if (n != NGX_ERROR) {
|
|
|
3156 r->cache->valid_sec = n;
|
|
|
3157 }
|
|
489
|
3158 }
|
|
|
3159 #endif
|
|
481
|
3160
|
|
58
|
3161 return NGX_OK;
|
|
|
3162 }
|
|
|
3163
|
|
|
3164
|
|
|
3165 static ngx_int_t
|
|
76
|
3166 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3167 ngx_uint_t offset)
|
|
126
|
3168 {
|
|
76
|
3169 ngx_int_t n;
|
|
|
3170
|
|
|
3171 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
3172
|
|
|
3173 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
3174
|
|
|
3175 if (n != NGX_ERROR) {
|
|
|
3176 r->limit_rate = (size_t) n;
|
|
|
3177 }
|
|
|
3178
|
|
|
3179 return NGX_OK;
|
|
|
3180 }
|
|
|
3181
|
|
|
3182
|
|
|
3183 static ngx_int_t
|
|
198
|
3184 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3185 ngx_uint_t offset)
|
|
|
3186 {
|
|
|
3187 u_char c0, c1, c2;
|
|
|
3188
|
|
|
3189 if (r->upstream->conf->change_buffering) {
|
|
|
3190
|
|
|
3191 if (h->value.len == 2) {
|
|
|
3192 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3193 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3194
|
|
|
3195 if (c0 == 'n' && c1 == 'o') {
|
|
|
3196 r->upstream->buffering = 0;
|
|
|
3197 }
|
|
|
3198
|
|
|
3199 } else if (h->value.len == 3) {
|
|
|
3200 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3201 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3202 c2 = ngx_tolower(h->value.data[2]);
|
|
|
3203
|
|
|
3204 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
3205 r->upstream->buffering = 1;
|
|
|
3206 }
|
|
|
3207 }
|
|
|
3208 }
|
|
|
3209
|
|
|
3210 return NGX_OK;
|
|
|
3211 }
|
|
|
3212
|
|
|
3213
|
|
|
3214 static ngx_int_t
|
|
206
|
3215 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3216 ngx_uint_t offset)
|
|
|
3217 {
|
|
|
3218 r->headers_out.override_charset = &h->value;
|
|
|
3219
|
|
|
3220 return NGX_OK;
|
|
|
3221 }
|
|
|
3222
|
|
|
3223
|
|
|
3224 static ngx_int_t
|
|
58
|
3225 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3226 ngx_uint_t offset)
|
|
|
3227 {
|
|
122
|
3228 ngx_table_elt_t *ho, **ph;
|
|
58
|
3229
|
|
|
3230 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3231 if (ho == NULL) {
|
|
|
3232 return NGX_ERROR;
|
|
|
3233 }
|
|
|
3234
|
|
|
3235 *ho = *h;
|
|
|
3236
|
|
122
|
3237 if (offset) {
|
|
|
3238 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
3239 *ph = ho;
|
|
|
3240 }
|
|
|
3241
|
|
58
|
3242 return NGX_OK;
|
|
|
3243 }
|
|
|
3244
|
|
|
3245
|
|
|
3246 static ngx_int_t
|
|
|
3247 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
3248 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3249 {
|
|
|
3250 ngx_array_t *pa;
|
|
|
3251 ngx_table_elt_t *ho, **ph;
|
|
|
3252
|
|
|
3253 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
3254
|
|
|
3255 if (pa->elts == NULL) {
|
|
|
3256 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3257 {
|
|
|
3258 return NGX_ERROR;
|
|
|
3259 }
|
|
|
3260 }
|
|
|
3261
|
|
|
3262 ph = ngx_array_push(pa);
|
|
|
3263 if (ph == NULL) {
|
|
|
3264 return NGX_ERROR;
|
|
|
3265 }
|
|
|
3266
|
|
|
3267 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3268 if (ho == NULL) {
|
|
|
3269 return NGX_ERROR;
|
|
|
3270 }
|
|
|
3271
|
|
|
3272 *ho = *h;
|
|
|
3273 *ph = ho;
|
|
|
3274
|
|
|
3275 return NGX_OK;
|
|
|
3276 }
|
|
|
3277
|
|
|
3278
|
|
|
3279 static ngx_int_t
|
|
|
3280 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3281 ngx_uint_t offset)
|
|
|
3282 {
|
|
206
|
3283 u_char *p, *last;
|
|
|
3284
|
|
|
3285 r->headers_out.content_type_len = h->value.len;
|
|
58
|
3286 r->headers_out.content_type = h->value;
|
|
503
|
3287 r->headers_out.content_type_lowcase = NULL;
|
|
58
|
3288
|
|
206
|
3289 for (p = h->value.data; *p; p++) {
|
|
|
3290
|
|
|
3291 if (*p != ';') {
|
|
|
3292 continue;
|
|
|
3293 }
|
|
|
3294
|
|
|
3295 last = p;
|
|
|
3296
|
|
|
3297 while (*++p == ' ') { /* void */ }
|
|
|
3298
|
|
372
|
3299 if (*p == '\0') {
|
|
|
3300 return NGX_OK;
|
|
|
3301 }
|
|
|
3302
|
|
286
|
3303 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
3304 continue;
|
|
|
3305 }
|
|
|
3306
|
|
|
3307 p += 8;
|
|
|
3308
|
|
|
3309 r->headers_out.content_type_len = last - h->value.data;
|
|
|
3310
|
|
416
|
3311 if (*p == '"') {
|
|
|
3312 p++;
|
|
|
3313 }
|
|
|
3314
|
|
|
3315 last = h->value.data + h->value.len;
|
|
|
3316
|
|
|
3317 if (*(last - 1) == '"') {
|
|
|
3318 last--;
|
|
|
3319 }
|
|
|
3320
|
|
|
3321 r->headers_out.charset.len = last - p;
|
|
206
|
3322 r->headers_out.charset.data = p;
|
|
292
|
3323
|
|
|
3324 return NGX_OK;
|
|
206
|
3325 }
|
|
|
3326
|
|
58
|
3327 return NGX_OK;
|
|
|
3328 }
|
|
|
3329
|
|
|
3330
|
|
|
3331 static ngx_int_t
|
|
|
3332 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3333 ngx_uint_t offset)
|
|
|
3334 {
|
|
|
3335 ngx_table_elt_t *ho;
|
|
|
3336
|
|
|
3337 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3338 if (ho == NULL) {
|
|
|
3339 return NGX_ERROR;
|
|
|
3340 }
|
|
|
3341
|
|
|
3342 *ho = *h;
|
|
|
3343
|
|
|
3344 r->headers_out.content_length = ho;
|
|
|
3345 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
3346
|
|
|
3347 return NGX_OK;
|
|
|
3348 }
|
|
|
3349
|
|
|
3350
|
|
|
3351 static ngx_int_t
|
|
473
|
3352 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3353 ngx_uint_t offset)
|
|
|
3354 {
|
|
|
3355 ngx_table_elt_t *ho;
|
|
|
3356
|
|
|
3357 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3358 if (ho == NULL) {
|
|
|
3359 return NGX_ERROR;
|
|
|
3360 }
|
|
|
3361
|
|
|
3362 *ho = *h;
|
|
|
3363
|
|
520
|
3364 r->headers_out.last_modified = ho;
|
|
|
3365
|
|
473
|
3366 #if (NGX_HTTP_CACHE)
|
|
|
3367
|
|
511
|
3368 if (r->upstream->cacheable) {
|
|
473
|
3369 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
|
3370 h->value.len);
|
|
|
3371 }
|
|
|
3372
|
|
|
3373 #endif
|
|
|
3374
|
|
|
3375 return NGX_OK;
|
|
|
3376 }
|
|
|
3377
|
|
|
3378
|
|
|
3379 static ngx_int_t
|
|
58
|
3380 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3381 ngx_uint_t offset)
|
|
|
3382 {
|
|
|
3383 ngx_int_t rc;
|
|
|
3384 ngx_table_elt_t *ho;
|
|
|
3385
|
|
|
3386 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3387 if (ho == NULL) {
|
|
|
3388 return NGX_ERROR;
|
|
|
3389 }
|
|
|
3390
|
|
|
3391 *ho = *h;
|
|
|
3392
|
|
|
3393 if (r->upstream->rewrite_redirect) {
|
|
|
3394 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
3395
|
|
78
|
3396 if (rc == NGX_DECLINED) {
|
|
|
3397 return NGX_OK;
|
|
|
3398 }
|
|
|
3399
|
|
58
|
3400 if (rc == NGX_OK) {
|
|
|
3401 r->headers_out.location = ho;
|
|
|
3402
|
|
|
3403 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3404 "rewritten location: \"%V\"", &ho->value);
|
|
|
3405 }
|
|
|
3406
|
|
|
3407 return rc;
|
|
|
3408 }
|
|
|
3409
|
|
348
|
3410 if (ho->value.data[0] != '/') {
|
|
|
3411 r->headers_out.location = ho;
|
|
|
3412 }
|
|
|
3413
|
|
58
|
3414 /*
|
|
|
3415 * we do not set r->headers_out.location here to avoid the handling
|
|
|
3416 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
3417 */
|
|
|
3418
|
|
|
3419 return NGX_OK;
|
|
|
3420 }
|
|
|
3421
|
|
|
3422
|
|
|
3423 static ngx_int_t
|
|
|
3424 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3425 ngx_uint_t offset)
|
|
|
3426 {
|
|
|
3427 u_char *p;
|
|
|
3428 ngx_int_t rc;
|
|
|
3429 ngx_table_elt_t *ho;
|
|
|
3430
|
|
|
3431 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3432 if (ho == NULL) {
|
|
|
3433 return NGX_ERROR;
|
|
|
3434 }
|
|
|
3435
|
|
|
3436 *ho = *h;
|
|
|
3437
|
|
|
3438 if (r->upstream->rewrite_redirect) {
|
|
|
3439
|
|
340
|
3440 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
3441
|
|
|
3442 if (p) {
|
|
|
3443 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
3444
|
|
|
3445 } else {
|
|
|
3446 return NGX_OK;
|
|
|
3447 }
|
|
|
3448
|
|
78
|
3449 if (rc == NGX_DECLINED) {
|
|
|
3450 return NGX_OK;
|
|
|
3451 }
|
|
|
3452
|
|
58
|
3453 if (rc == NGX_OK) {
|
|
348
|
3454 r->headers_out.refresh = ho;
|
|
|
3455
|
|
58
|
3456 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3457 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 return rc;
|
|
|
3461 }
|
|
|
3462
|
|
348
|
3463 r->headers_out.refresh = ho;
|
|
|
3464
|
|
58
|
3465 return NGX_OK;
|
|
|
3466 }
|
|
|
3467
|
|
|
3468
|
|
473
|
3469 static ngx_int_t
|
|
|
3470 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
3471 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3472 {
|
|
|
3473 ngx_table_elt_t *ho;
|
|
|
3474
|
|
|
3475 #if (NGX_HTTP_CACHE)
|
|
|
3476
|
|
|
3477 if (r->cached) {
|
|
|
3478 r->allow_ranges = 1;
|
|
|
3479 return NGX_OK;
|
|
|
3480
|
|
|
3481 }
|
|
|
3482
|
|
|
3483 #endif
|
|
|
3484
|
|
|
3485 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3486 if (ho == NULL) {
|
|
|
3487 return NGX_ERROR;
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 *ho = *h;
|
|
|
3491
|
|
520
|
3492 r->headers_out.accept_ranges = ho;
|
|
|
3493
|
|
473
|
3494 return NGX_OK;
|
|
|
3495 }
|
|
|
3496
|
|
|
3497
|
|
58
|
3498 #if (NGX_HTTP_GZIP)
|
|
|
3499
|
|
|
3500 static ngx_int_t
|
|
|
3501 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
3502 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3503 {
|
|
|
3504 ngx_table_elt_t *ho;
|
|
|
3505
|
|
|
3506 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3507 if (ho == NULL) {
|
|
|
3508 return NGX_ERROR;
|
|
|
3509 }
|
|
|
3510
|
|
|
3511 *ho = *h;
|
|
|
3512
|
|
|
3513 r->headers_out.content_encoding = ho;
|
|
|
3514
|
|
|
3515 return NGX_OK;
|
|
|
3516 }
|
|
|
3517
|
|
|
3518 #endif
|
|
|
3519
|
|
|
3520
|
|
36
|
3521 static ngx_int_t
|
|
122
|
3522 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
3523 {
|
|
260
|
3524 ngx_http_variable_t *var, *v;
|
|
28
|
3525
|
|
122
|
3526 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
3527 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
3528 if (var == NULL) {
|
|
|
3529 return NGX_ERROR;
|
|
|
3530 }
|
|
|
3531
|
|
186
|
3532 var->get_handler = v->get_handler;
|
|
122
|
3533 var->data = v->data;
|
|
|
3534 }
|
|
|
3535
|
|
28
|
3536 return NGX_OK;
|
|
|
3537 }
|
|
58
|
3538
|
|
|
3539
|
|
122
|
3540 static ngx_int_t
|
|
298
|
3541 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
3542 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3543 {
|
|
|
3544 u_char *p;
|
|
|
3545 size_t len;
|
|
|
3546 ngx_uint_t i;
|
|
|
3547 ngx_http_upstream_state_t *state;
|
|
|
3548
|
|
|
3549 v->valid = 1;
|
|
340
|
3550 v->no_cacheable = 0;
|
|
298
|
3551 v->not_found = 0;
|
|
|
3552
|
|
|
3553 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3554 v->not_found = 1;
|
|
|
3555 return NGX_OK;
|
|
|
3556 }
|
|
|
3557
|
|
|
3558 len = 0;
|
|
|
3559 state = r->upstream_states->elts;
|
|
|
3560
|
|
|
3561 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
3562 if (state[i].peer) {
|
|
|
3563 len += state[i].peer->len + 2;
|
|
|
3564
|
|
|
3565 } else {
|
|
|
3566 len += 3;
|
|
|
3567 }
|
|
|
3568 }
|
|
|
3569
|
|
382
|
3570 p = ngx_pnalloc(r->pool, len);
|
|
298
|
3571 if (p == NULL) {
|
|
|
3572 return NGX_ERROR;
|
|
|
3573 }
|
|
|
3574
|
|
|
3575 v->data = p;
|
|
|
3576
|
|
|
3577 i = 0;
|
|
|
3578
|
|
|
3579 for ( ;; ) {
|
|
|
3580 if (state[i].peer) {
|
|
|
3581 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3582 }
|
|
|
3583
|
|
|
3584 if (++i == r->upstream_states->nelts) {
|
|
|
3585 break;
|
|
|
3586 }
|
|
|
3587
|
|
|
3588 if (state[i].peer) {
|
|
|
3589 *p++ = ',';
|
|
|
3590 *p++ = ' ';
|
|
|
3591
|
|
|
3592 } else {
|
|
|
3593 *p++ = ' ';
|
|
|
3594 *p++ = ':';
|
|
|
3595 *p++ = ' ';
|
|
|
3596
|
|
|
3597 if (++i == r->upstream_states->nelts) {
|
|
|
3598 break;
|
|
|
3599 }
|
|
|
3600
|
|
|
3601 continue;
|
|
|
3602 }
|
|
|
3603 }
|
|
|
3604
|
|
|
3605 v->len = p - v->data;
|
|
|
3606
|
|
|
3607 return NGX_OK;
|
|
|
3608 }
|
|
|
3609
|
|
|
3610
|
|
|
3611 static ngx_int_t
|
|
122
|
3612 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3613 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3614 {
|
|
|
3615 u_char *p;
|
|
|
3616 size_t len;
|
|
|
3617 ngx_uint_t i;
|
|
|
3618 ngx_http_upstream_state_t *state;
|
|
|
3619
|
|
|
3620 v->valid = 1;
|
|
340
|
3621 v->no_cacheable = 0;
|
|
122
|
3622 v->not_found = 0;
|
|
|
3623
|
|
296
|
3624 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3625 v->not_found = 1;
|
|
|
3626 return NGX_OK;
|
|
|
3627 }
|
|
|
3628
|
|
296
|
3629 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3630
|
|
382
|
3631 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3632 if (p == NULL) {
|
|
|
3633 return NGX_ERROR;
|
|
|
3634 }
|
|
|
3635
|
|
|
3636 v->data = p;
|
|
|
3637
|
|
|
3638 i = 0;
|
|
296
|
3639 state = r->upstream_states->elts;
|
|
122
|
3640
|
|
|
3641 for ( ;; ) {
|
|
296
|
3642 if (state[i].status) {
|
|
|
3643 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3644
|
|
|
3645 } else {
|
|
296
|
3646 *p++ = '-';
|
|
122
|
3647 }
|
|
|
3648
|
|
296
|
3649 if (++i == r->upstream_states->nelts) {
|
|
122
|
3650 break;
|
|
|
3651 }
|
|
|
3652
|
|
296
|
3653 if (state[i].peer) {
|
|
|
3654 *p++ = ',';
|
|
|
3655 *p++ = ' ';
|
|
|
3656
|
|
|
3657 } else {
|
|
|
3658 *p++ = ' ';
|
|
|
3659 *p++ = ':';
|
|
|
3660 *p++ = ' ';
|
|
|
3661
|
|
|
3662 if (++i == r->upstream_states->nelts) {
|
|
|
3663 break;
|
|
|
3664 }
|
|
|
3665
|
|
|
3666 continue;
|
|
|
3667 }
|
|
122
|
3668 }
|
|
|
3669
|
|
|
3670 v->len = p - v->data;
|
|
|
3671
|
|
|
3672 return NGX_OK;
|
|
|
3673 }
|
|
|
3674
|
|
|
3675
|
|
|
3676 static ngx_int_t
|
|
|
3677 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3678 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3679 {
|
|
|
3680 u_char *p;
|
|
|
3681 size_t len;
|
|
|
3682 ngx_uint_t i;
|
|
262
|
3683 ngx_msec_int_t ms;
|
|
122
|
3684 ngx_http_upstream_state_t *state;
|
|
|
3685
|
|
|
3686 v->valid = 1;
|
|
340
|
3687 v->no_cacheable = 0;
|
|
122
|
3688 v->not_found = 0;
|
|
|
3689
|
|
296
|
3690 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3691 v->not_found = 1;
|
|
|
3692 return NGX_OK;
|
|
|
3693 }
|
|
|
3694
|
|
296
|
3695 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3696
|
|
382
|
3697 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3698 if (p == NULL) {
|
|
|
3699 return NGX_ERROR;
|
|
|
3700 }
|
|
|
3701
|
|
|
3702 v->data = p;
|
|
|
3703
|
|
|
3704 i = 0;
|
|
296
|
3705 state = r->upstream_states->elts;
|
|
122
|
3706
|
|
|
3707 for ( ;; ) {
|
|
296
|
3708 if (state[i].status) {
|
|
346
|
3709 ms = (ngx_msec_int_t)
|
|
|
3710 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3711 ms = (ms >= 0) ? ms : 0;
|
|
|
3712 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3713
|
|
|
3714 } else {
|
|
|
3715 *p++ = '-';
|
|
122
|
3716 }
|
|
|
3717
|
|
296
|
3718 if (++i == r->upstream_states->nelts) {
|
|
122
|
3719 break;
|
|
|
3720 }
|
|
|
3721
|
|
296
|
3722 if (state[i].peer) {
|
|
|
3723 *p++ = ',';
|
|
|
3724 *p++ = ' ';
|
|
|
3725
|
|
|
3726 } else {
|
|
|
3727 *p++ = ' ';
|
|
|
3728 *p++ = ':';
|
|
|
3729 *p++ = ' ';
|
|
|
3730
|
|
|
3731 if (++i == r->upstream_states->nelts) {
|
|
|
3732 break;
|
|
|
3733 }
|
|
|
3734
|
|
|
3735 continue;
|
|
|
3736 }
|
|
122
|
3737 }
|
|
|
3738
|
|
|
3739 v->len = p - v->data;
|
|
|
3740
|
|
|
3741 return NGX_OK;
|
|
|
3742 }
|
|
|
3743
|
|
|
3744
|
|
439
|
3745 static ngx_int_t
|
|
|
3746 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3747 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3748 {
|
|
|
3749 u_char *p;
|
|
|
3750 size_t len;
|
|
|
3751 ngx_uint_t i;
|
|
|
3752 ngx_http_upstream_state_t *state;
|
|
|
3753
|
|
|
3754 v->valid = 1;
|
|
|
3755 v->no_cacheable = 0;
|
|
|
3756 v->not_found = 0;
|
|
|
3757
|
|
|
3758 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3759 v->not_found = 1;
|
|
|
3760 return NGX_OK;
|
|
|
3761 }
|
|
|
3762
|
|
|
3763 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3764
|
|
|
3765 p = ngx_pnalloc(r->pool, len);
|
|
|
3766 if (p == NULL) {
|
|
|
3767 return NGX_ERROR;
|
|
|
3768 }
|
|
|
3769
|
|
|
3770 v->data = p;
|
|
|
3771
|
|
|
3772 i = 0;
|
|
|
3773 state = r->upstream_states->elts;
|
|
|
3774
|
|
|
3775 for ( ;; ) {
|
|
|
3776 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3777
|
|
|
3778 if (++i == r->upstream_states->nelts) {
|
|
|
3779 break;
|
|
|
3780 }
|
|
|
3781
|
|
|
3782 if (state[i].peer) {
|
|
|
3783 *p++ = ',';
|
|
|
3784 *p++ = ' ';
|
|
|
3785
|
|
|
3786 } else {
|
|
|
3787 *p++ = ' ';
|
|
|
3788 *p++ = ':';
|
|
|
3789 *p++ = ' ';
|
|
|
3790
|
|
|
3791 if (++i == r->upstream_states->nelts) {
|
|
|
3792 break;
|
|
|
3793 }
|
|
|
3794
|
|
|
3795 continue;
|
|
|
3796 }
|
|
|
3797 }
|
|
|
3798
|
|
|
3799 v->len = p - v->data;
|
|
|
3800
|
|
|
3801 return NGX_OK;
|
|
|
3802 }
|
|
|
3803
|
|
|
3804
|
|
296
|
3805 ngx_int_t
|
|
|
3806 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3807 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3808 {
|
|
|
3809 if (r->upstream == NULL) {
|
|
|
3810 v->not_found = 1;
|
|
|
3811 return NGX_OK;
|
|
|
3812 }
|
|
|
3813
|
|
|
3814 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3815 &r->upstream->headers_in.headers.part,
|
|
|
3816 sizeof("upstream_http_") - 1);
|
|
|
3817 }
|
|
|
3818
|
|
|
3819
|
|
511
|
3820 #if (NGX_HTTP_CACHE)
|
|
|
3821
|
|
|
3822 ngx_int_t
|
|
|
3823 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
|
3824 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3825 {
|
|
|
3826 ngx_uint_t n;
|
|
|
3827
|
|
|
3828 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
|
3829 v->not_found = 1;
|
|
|
3830 return NGX_OK;
|
|
|
3831 }
|
|
|
3832
|
|
|
3833 n = r->upstream->cache_status - 1;
|
|
|
3834
|
|
|
3835 v->valid = 1;
|
|
|
3836 v->no_cacheable = 0;
|
|
|
3837 v->not_found = 0;
|
|
|
3838 v->len = ngx_http_cache_status[n].len;
|
|
|
3839 v->data = ngx_http_cache_status[n].data;
|
|
|
3840
|
|
|
3841 return NGX_OK;
|
|
|
3842 }
|
|
|
3843
|
|
|
3844 #endif
|
|
|
3845
|
|
|
3846
|
|
200
|
3847 static char *
|
|
|
3848 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3849 {
|
|
260
|
3850 char *rv;
|
|
|
3851 void *mconf;
|
|
|
3852 ngx_str_t *value;
|
|
|
3853 ngx_url_t u;
|
|
|
3854 ngx_uint_t m;
|
|
|
3855 ngx_conf_t pcf;
|
|
|
3856 ngx_http_module_t *module;
|
|
|
3857 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3858 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3859
|
|
|
3860 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3861
|
|
|
3862 value = cf->args->elts;
|
|
|
3863 u.host = value[1];
|
|
|
3864 u.no_resolve = 1;
|
|
|
3865
|
|
|
3866 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3867 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3868 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3869 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3870 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3871 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3872 if (uscf == NULL) {
|
|
|
3873 return NGX_CONF_ERROR;
|
|
|
3874 }
|
|
|
3875
|
|
200
|
3876
|
|
|
3877 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3878 if (ctx == NULL) {
|
|
|
3879 return NGX_CONF_ERROR;
|
|
|
3880 }
|
|
|
3881
|
|
260
|
3882 http_ctx = cf->ctx;
|
|
|
3883 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3884
|
|
|
3885 /* the upstream{}'s srv_conf */
|
|
|
3886
|
|
|
3887 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3888 if (ctx->srv_conf == NULL) {
|
|
|
3889 return NGX_CONF_ERROR;
|
|
|
3890 }
|
|
|
3891
|
|
|
3892 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3893
|
|
260
|
3894 uscf->srv_conf = ctx->srv_conf;
|
|
|
3895
|
|
200
|
3896
|
|
|
3897 /* the upstream{}'s loc_conf */
|
|
|
3898
|
|
|
3899 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3900 if (ctx->loc_conf == NULL) {
|
|
|
3901 return NGX_CONF_ERROR;
|
|
|
3902 }
|
|
|
3903
|
|
|
3904 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3905 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3906 continue;
|
|
|
3907 }
|
|
|
3908
|
|
|
3909 module = ngx_modules[m]->ctx;
|
|
|
3910
|
|
260
|
3911 if (module->create_srv_conf) {
|
|
|
3912 mconf = module->create_srv_conf(cf);
|
|
|
3913 if (mconf == NULL) {
|
|
|
3914 return NGX_CONF_ERROR;
|
|
|
3915 }
|
|
|
3916
|
|
|
3917 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3918 }
|
|
|
3919
|
|
200
|
3920 if (module->create_loc_conf) {
|
|
|
3921 mconf = module->create_loc_conf(cf);
|
|
|
3922 if (mconf == NULL) {
|
|
|
3923 return NGX_CONF_ERROR;
|
|
|
3924 }
|
|
|
3925
|
|
|
3926 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3927 }
|
|
|
3928 }
|
|
|
3929
|
|
|
3930
|
|
|
3931 /* parse inside upstream{} */
|
|
|
3932
|
|
|
3933 pcf = *cf;
|
|
|
3934 cf->ctx = ctx;
|
|
|
3935 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3936
|
|
|
3937 rv = ngx_conf_parse(cf, NULL);
|
|
|
3938
|
|
|
3939 *cf = pcf;
|
|
|
3940
|
|
|
3941 if (rv != NGX_CONF_OK) {
|
|
|
3942 return rv;
|
|
|
3943 }
|
|
|
3944
|
|
|
3945 if (uscf->servers == NULL) {
|
|
|
3946 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3947 "no servers are inside upstream");
|
|
|
3948 return NGX_CONF_ERROR;
|
|
|
3949 }
|
|
|
3950
|
|
|
3951 return rv;
|
|
|
3952 }
|
|
|
3953
|
|
|
3954
|
|
|
3955 static char *
|
|
|
3956 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3957 {
|
|
|
3958 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3959
|
|
260
|
3960 time_t fail_timeout;
|
|
|
3961 ngx_str_t *value, s;
|
|
|
3962 ngx_url_t u;
|
|
|
3963 ngx_int_t weight, max_fails;
|
|
|
3964 ngx_uint_t i;
|
|
|
3965 ngx_http_upstream_server_t *us;
|
|
200
|
3966
|
|
|
3967 if (uscf->servers == NULL) {
|
|
260
|
3968 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3969 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3970 if (uscf->servers == NULL) {
|
|
|
3971 return NGX_CONF_ERROR;
|
|
|
3972 }
|
|
|
3973 }
|
|
|
3974
|
|
260
|
3975 us = ngx_array_push(uscf->servers);
|
|
|
3976 if (us == NULL) {
|
|
200
|
3977 return NGX_CONF_ERROR;
|
|
|
3978 }
|
|
|
3979
|
|
260
|
3980 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3981
|
|
200
|
3982 value = cf->args->elts;
|
|
|
3983
|
|
|
3984 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3985
|
|
|
3986 u.url = value[1];
|
|
266
|
3987 u.default_port = 80;
|
|
200
|
3988
|
|
340
|
3989 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3990 if (u.err) {
|
|
|
3991 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3992 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3993 }
|
|
|
3994
|
|
|
3995 return NGX_CONF_ERROR;
|
|
|
3996 }
|
|
|
3997
|
|
212
|
3998 weight = 1;
|
|
260
|
3999 max_fails = 1;
|
|
|
4000 fail_timeout = 10;
|
|
|
4001
|
|
|
4002 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
4003
|
|
|
4004 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
4005
|
|
|
4006 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
4007 goto invalid;
|
|
|
4008 }
|
|
|
4009
|
|
|
4010 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
4011
|
|
|
4012 if (weight == NGX_ERROR || weight == 0) {
|
|
|
4013 goto invalid;
|
|
|
4014 }
|
|
|
4015
|
|
260
|
4016 continue;
|
|
|
4017 }
|
|
|
4018
|
|
|
4019 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
4020
|
|
|
4021 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
4022 goto invalid;
|
|
|
4023 }
|
|
|
4024
|
|
|
4025 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
4026
|
|
|
4027 if (max_fails == NGX_ERROR) {
|
|
|
4028 goto invalid;
|
|
|
4029 }
|
|
|
4030
|
|
|
4031 continue;
|
|
212
|
4032 }
|
|
260
|
4033
|
|
|
4034 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
4035
|
|
|
4036 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
4037 goto invalid;
|
|
|
4038 }
|
|
|
4039
|
|
|
4040 s.len = value[i].len - 13;
|
|
|
4041 s.data = &value[i].data[13];
|
|
|
4042
|
|
|
4043 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
4044
|
|
372
|
4045 if (fail_timeout == NGX_ERROR) {
|
|
260
|
4046 goto invalid;
|
|
|
4047 }
|
|
|
4048
|
|
|
4049 continue;
|
|
|
4050 }
|
|
|
4051
|
|
326
|
4052 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
4053
|
|
|
4054 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
4055 goto invalid;
|
|
|
4056 }
|
|
|
4057
|
|
|
4058 us->backup = 1;
|
|
|
4059
|
|
|
4060 continue;
|
|
|
4061 }
|
|
|
4062
|
|
260
|
4063 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
4064
|
|
|
4065 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
4066 goto invalid;
|
|
|
4067 }
|
|
|
4068
|
|
|
4069 us->down = 1;
|
|
|
4070
|
|
|
4071 continue;
|
|
|
4072 }
|
|
|
4073
|
|
|
4074 goto invalid;
|
|
212
|
4075 }
|
|
|
4076
|
|
260
|
4077 us->addrs = u.addrs;
|
|
|
4078 us->naddrs = u.naddrs;
|
|
|
4079 us->weight = weight;
|
|
|
4080 us->max_fails = max_fails;
|
|
|
4081 us->fail_timeout = fail_timeout;
|
|
200
|
4082
|
|
|
4083 return NGX_CONF_OK;
|
|
212
|
4084
|
|
|
4085 invalid:
|
|
|
4086
|
|
260
|
4087 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4088 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
4089
|
|
|
4090 return NGX_CONF_ERROR;
|
|
200
|
4091 }
|
|
|
4092
|
|
|
4093
|
|
|
4094 ngx_http_upstream_srv_conf_t *
|
|
260
|
4095 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
4096 {
|
|
|
4097 ngx_uint_t i;
|
|
260
|
4098 ngx_http_upstream_server_t *us;
|
|
200
|
4099 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
4100 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4101
|
|
260
|
4102 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
4103
|
|
340
|
4104 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
4105 if (u->err) {
|
|
|
4106 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4107 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
4108 }
|
|
|
4109
|
|
|
4110 return NULL;
|
|
|
4111 }
|
|
|
4112 }
|
|
|
4113
|
|
|
4114 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
4115
|
|
|
4116 uscfp = umcf->upstreams.elts;
|
|
|
4117
|
|
|
4118 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
4119
|
|
|
4120 if (uscfp[i]->host.len != u->host.len
|
|
260
|
4121 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
4122 != 0)
|
|
|
4123 {
|
|
200
|
4124 continue;
|
|
|
4125 }
|
|
|
4126
|
|
260
|
4127 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
4128 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
4129 {
|
|
260
|
4130 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4131 "duplicate upstream \"%V\"", &u->host);
|
|
|
4132 return NULL;
|
|
200
|
4133 }
|
|
260
|
4134
|
|
266
|
4135 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
4136 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
4137 "upstream \"%V\" may not have port %d",
|
|
|
4138 &u->host, u->port);
|
|
|
4139 return NULL;
|
|
|
4140 }
|
|
|
4141
|
|
|
4142 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
4143 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
4144 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
4145 &u->host, uscfp[i]->port,
|
|
336
|
4146 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
4147 return NULL;
|
|
|
4148 }
|
|
|
4149
|
|
|
4150 if (uscfp[i]->port != u->port) {
|
|
|
4151 continue;
|
|
260
|
4152 }
|
|
|
4153
|
|
324
|
4154 if (uscfp[i]->default_port && u->default_port
|
|
|
4155 && uscfp[i]->default_port != u->default_port)
|
|
|
4156 {
|
|
|
4157 continue;
|
|
|
4158 }
|
|
|
4159
|
|
260
|
4160 return uscfp[i];
|
|
200
|
4161 }
|
|
|
4162
|
|
|
4163 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
4164 if (uscf == NULL) {
|
|
|
4165 return NULL;
|
|
|
4166 }
|
|
|
4167
|
|
260
|
4168 uscf->flags = flags;
|
|
200
|
4169 uscf->host = u->host;
|
|
336
|
4170 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
4171 uscf->line = cf->conf_file->line;
|
|
266
|
4172 uscf->port = u->port;
|
|
|
4173 uscf->default_port = u->default_port;
|
|
260
|
4174
|
|
|
4175 if (u->naddrs == 1) {
|
|
|
4176 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
4177 sizeof(ngx_http_upstream_server_t));
|
|
|
4178 if (uscf->servers == NULL) {
|
|
|
4179 return NGX_CONF_ERROR;
|
|
|
4180 }
|
|
|
4181
|
|
|
4182 us = ngx_array_push(uscf->servers);
|
|
|
4183 if (us == NULL) {
|
|
|
4184 return NGX_CONF_ERROR;
|
|
|
4185 }
|
|
|
4186
|
|
|
4187 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4188
|
|
|
4189 us->addrs = u->addrs;
|
|
|
4190 us->naddrs = u->naddrs;
|
|
|
4191 }
|
|
200
|
4192
|
|
|
4193 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
4194 if (uscfp == NULL) {
|
|
|
4195 return NULL;
|
|
|
4196 }
|
|
|
4197
|
|
|
4198 *uscfp = uscf;
|
|
|
4199
|
|
|
4200 return uscf;
|
|
|
4201 }
|
|
|
4202
|
|
|
4203
|
|
356
|
4204 ngx_int_t
|
|
|
4205 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
4206 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
4207 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
4208 {
|
|
|
4209 ngx_str_t *h;
|
|
|
4210 ngx_uint_t i, j;
|
|
|
4211 ngx_array_t hide_headers;
|
|
|
4212 ngx_hash_key_t *hk;
|
|
|
4213
|
|
|
4214 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
4215 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
4216 {
|
|
|
4217 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
4218
|
|
507
|
4219 if (conf->hide_headers_hash.buckets
|
|
511
|
4220 #if (NGX_HTTP_CACHE)
|
|
|
4221 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
|
4222 #endif
|
|
|
4223 )
|
|
507
|
4224 {
|
|
356
|
4225 return NGX_OK;
|
|
|
4226 }
|
|
|
4227
|
|
|
4228 conf->hide_headers = prev->hide_headers;
|
|
|
4229 conf->pass_headers = prev->pass_headers;
|
|
|
4230
|
|
|
4231 } else {
|
|
|
4232 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4233 conf->hide_headers = prev->hide_headers;
|
|
|
4234 }
|
|
|
4235
|
|
|
4236 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4237 conf->pass_headers = prev->pass_headers;
|
|
|
4238 }
|
|
|
4239 }
|
|
|
4240
|
|
|
4241 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
4242 != NGX_OK)
|
|
|
4243 {
|
|
|
4244 return NGX_ERROR;
|
|
|
4245 }
|
|
|
4246
|
|
|
4247 for (h = default_hide_headers; h->len; h++) {
|
|
|
4248 hk = ngx_array_push(&hide_headers);
|
|
|
4249 if (hk == NULL) {
|
|
|
4250 return NGX_ERROR;
|
|
|
4251 }
|
|
|
4252
|
|
|
4253 hk->key = *h;
|
|
|
4254 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
4255 hk->value = (void *) 1;
|
|
|
4256 }
|
|
|
4257
|
|
|
4258 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4259
|
|
|
4260 h = conf->hide_headers->elts;
|
|
|
4261
|
|
|
4262 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
4263
|
|
|
4264 hk = hide_headers.elts;
|
|
|
4265
|
|
|
4266 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4267 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4268 goto exist;
|
|
|
4269 }
|
|
|
4270 }
|
|
|
4271
|
|
|
4272 hk = ngx_array_push(&hide_headers);
|
|
|
4273 if (hk == NULL) {
|
|
|
4274 return NGX_ERROR;
|
|
|
4275 }
|
|
|
4276
|
|
|
4277 hk->key = h[i];
|
|
|
4278 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
4279 hk->value = (void *) 1;
|
|
|
4280
|
|
|
4281 exist:
|
|
|
4282
|
|
|
4283 continue;
|
|
|
4284 }
|
|
|
4285 }
|
|
|
4286
|
|
|
4287 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4288
|
|
|
4289 h = conf->pass_headers->elts;
|
|
|
4290 hk = hide_headers.elts;
|
|
|
4291
|
|
|
4292 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
4293 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4294
|
|
|
4295 if (hk[j].key.data == NULL) {
|
|
|
4296 continue;
|
|
|
4297 }
|
|
|
4298
|
|
|
4299 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4300 hk[j].key.data = NULL;
|
|
|
4301 break;
|
|
|
4302 }
|
|
|
4303 }
|
|
|
4304 }
|
|
|
4305 }
|
|
|
4306
|
|
|
4307 hash->hash = &conf->hide_headers_hash;
|
|
|
4308 hash->key = ngx_hash_key_lc;
|
|
|
4309 hash->pool = cf->pool;
|
|
|
4310 hash->temp_pool = NULL;
|
|
|
4311
|
|
|
4312 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
4313 }
|
|
|
4314
|
|
|
4315
|
|
58
|
4316 static void *
|
|
|
4317 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
4318 {
|
|
|
4319 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4320
|
|
|
4321 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
4322 if (umcf == NULL) {
|
|
|
4323 return NULL;
|
|
|
4324 }
|
|
|
4325
|
|
200
|
4326 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
4327 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
4328 != NGX_OK)
|
|
|
4329 {
|
|
505
|
4330 return NULL;
|
|
200
|
4331 }
|
|
|
4332
|
|
58
|
4333 return umcf;
|
|
|
4334 }
|
|
|
4335
|
|
|
4336
|
|
|
4337 static char *
|
|
200
|
4338 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
4339 {
|
|
|
4340 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
4341
|
|
200
|
4342 ngx_uint_t i;
|
|
|
4343 ngx_array_t headers_in;
|
|
|
4344 ngx_hash_key_t *hk;
|
|
|
4345 ngx_hash_init_t hash;
|
|
260
|
4346 ngx_http_upstream_init_pt init;
|
|
200
|
4347 ngx_http_upstream_header_t *header;
|
|
|
4348 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
4349
|
|
|
4350 uscfp = umcf->upstreams.elts;
|
|
|
4351
|
|
|
4352 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
4353
|
|
|
4354 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
4355 ngx_http_upstream_init_round_robin;
|
|
|
4356
|
|
|
4357 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
4358 return NGX_CONF_ERROR;
|
|
|
4359 }
|
|
|
4360 }
|
|
198
|
4361
|
|
212
|
4362
|
|
260
|
4363 /* upstream_headers_in_hash */
|
|
|
4364
|
|
198
|
4365 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
4366 != NGX_OK)
|
|
58
|
4367 {
|
|
|
4368 return NGX_CONF_ERROR;
|
|
|
4369 }
|
|
|
4370
|
|
198
|
4371 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
4372 hk = ngx_array_push(&headers_in);
|
|
|
4373 if (hk == NULL) {
|
|
|
4374 return NGX_CONF_ERROR;
|
|
|
4375 }
|
|
|
4376
|
|
|
4377 hk->key = header->name;
|
|
|
4378 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
4379 hk->value = header;
|
|
|
4380 }
|
|
|
4381
|
|
|
4382 hash.hash = &umcf->headers_in_hash;
|
|
|
4383 hash.key = ngx_hash_key_lc;
|
|
|
4384 hash.max_size = 512;
|
|
244
|
4385 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
4386 hash.name = "upstream_headers_in_hash";
|
|
|
4387 hash.pool = cf->pool;
|
|
|
4388 hash.temp_pool = NULL;
|
|
|
4389
|
|
|
4390 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
4391 return NGX_CONF_ERROR;
|
|
|
4392 }
|
|
58
|
4393
|
|
|
4394 return NGX_CONF_OK;
|
|
|
4395 }
|
