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