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