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