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