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