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