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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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348
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12 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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430
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23 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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24 ngx_http_upstream_t *u);
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25 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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26 ngx_http_upstream_t *u);
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412
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27 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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28 ngx_http_upstream_t *u);
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29 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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30 ngx_http_upstream_t *u);
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294
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31 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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430
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32 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
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33 ngx_http_upstream_t *u);
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28
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34 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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35 ngx_http_upstream_t *u);
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130
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36 static void
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37 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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430
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38 static void
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39 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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40 ngx_http_upstream_t *u);
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428
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41 static void
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42 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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43 ngx_uint_t do_write);
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130
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44 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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45 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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46 ssize_t bytes);
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58
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47 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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430
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48 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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49 ngx_http_upstream_t *u);
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428
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50 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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51 static void ngx_http_upstream_store(ngx_http_request_t *r,
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52 ngx_http_upstream_t *u);
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430
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53 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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54 ngx_http_upstream_t *u);
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28
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55 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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56 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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57 static void ngx_http_upstream_cleanup(void *data);
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28
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58 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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59 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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60
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58
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61 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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63 static ngx_int_t
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64 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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68 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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70 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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72 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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74 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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76 static ngx_int_t
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77 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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78 ngx_table_elt_t *h, ngx_uint_t offset);
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79 static ngx_int_t ngx_http_upstream_copy_content_type(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_copy_content_length(ngx_http_request_t *r,
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82 ngx_table_elt_t *h, ngx_uint_t offset);
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83 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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84 ngx_table_elt_t *h, ngx_uint_t offset);
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85 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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86 ngx_table_elt_t *h, ngx_uint_t offset);
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87 #if (NGX_HTTP_GZIP)
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88 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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90 #endif
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91
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122
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92 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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93 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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94 ngx_http_variable_value_t *v, uintptr_t data);
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122
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95 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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96 ngx_http_variable_value_t *v, uintptr_t data);
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97 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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98 ngx_http_variable_value_t *v, uintptr_t data);
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430
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99 static ngx_int_t ngx_http_upstream_response_length_variable(
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100 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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101
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200
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102 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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103 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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104 void *conf);
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105
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58
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106 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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107 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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108
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126
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109 #if (NGX_HTTP_SSL)
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140
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110 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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111 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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112 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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113 #endif
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114
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58
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115
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116 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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117
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118 { ngx_string("Status"),
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119 ngx_http_upstream_process_header_line,
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120 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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121 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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122
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123 { ngx_string("Content-Type"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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126 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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127
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128 { ngx_string("Content-Length"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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131 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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132
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133 { ngx_string("Date"),
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134 ngx_http_upstream_process_header_line,
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135 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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136 ngx_http_upstream_copy_header_line,
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137 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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138
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318
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139 { ngx_string("Last-Modified"),
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140 ngx_http_upstream_process_header_line,
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141 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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142 ngx_http_upstream_copy_header_line,
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143 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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144
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58
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145 { ngx_string("Server"),
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146 ngx_http_upstream_process_header_line,
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147 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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148 ngx_http_upstream_copy_header_line,
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149 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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150
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78
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151 { ngx_string("WWW-Authenticate"),
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152 ngx_http_upstream_process_header_line,
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153 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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154 ngx_http_upstream_copy_header_line, 0, 0 },
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155
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58
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156 { ngx_string("Location"),
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392
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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159 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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160
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161 { ngx_string("Refresh"),
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162 ngx_http_upstream_ignore_header_line, 0,
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64
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163 ngx_http_upstream_rewrite_refresh, 0, 0 },
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164
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165 { ngx_string("Set-Cookie"),
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166 ngx_http_upstream_ignore_header_line, 0,
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80
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167 ngx_http_upstream_copy_header_line, 0, 1 },
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168
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169 { ngx_string("Content-Disposition"),
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170 ngx_http_upstream_ignore_header_line, 0,
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171 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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172
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173 { ngx_string("Cache-Control"),
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174 ngx_http_upstream_process_multi_header_lines,
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175 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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176 ngx_http_upstream_copy_multi_header_lines,
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64
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177 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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178
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122
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179 { ngx_string("Expires"),
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180 ngx_http_upstream_process_header_line,
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181 offsetof(ngx_http_upstream_headers_in_t, expires),
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182 ngx_http_upstream_copy_header_line,
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183 offsetof(ngx_http_headers_out_t, expires), 1 },
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184
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126
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185 { ngx_string("Accept-Ranges"),
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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188 ngx_http_upstream_copy_header_line,
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189 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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190
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58
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191 { ngx_string("Connection"),
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192 ngx_http_upstream_ignore_header_line, 0,
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64
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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194
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190
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195 { ngx_string("Keep-Alive"),
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196 ngx_http_upstream_ignore_header_line, 0,
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197 ngx_http_upstream_ignore_header_line, 0, 0 },
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198
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58
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199 { ngx_string("X-Powered-By"),
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200 ngx_http_upstream_ignore_header_line, 0,
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198
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201 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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202
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203 { ngx_string("X-Accel-Expires"),
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204 ngx_http_upstream_process_header_line,
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205 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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206 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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207
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208 { ngx_string("X-Accel-Redirect"),
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209 ngx_http_upstream_process_header_line,
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210 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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211 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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212
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76
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213 { ngx_string("X-Accel-Limit-Rate"),
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214 ngx_http_upstream_process_limit_rate, 0,
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215 ngx_http_upstream_ignore_header_line, 0, 0 },
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216
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198
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217 { ngx_string("X-Accel-Buffering"),
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218 ngx_http_upstream_process_buffering, 0,
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219 ngx_http_upstream_ignore_header_line, 0, 0 },
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220
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206
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221 { ngx_string("X-Accel-Charset"),
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222 ngx_http_upstream_process_charset, 0,
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223 ngx_http_upstream_ignore_header_line, 0, 0 },
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224
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58
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225 #if (NGX_HTTP_GZIP)
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226 { ngx_string("Content-Encoding"),
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227 ngx_http_upstream_process_header_line,
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228 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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229 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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230 #endif
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231
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64
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232 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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233 };
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28
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234
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235
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200
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236 static ngx_command_t ngx_http_upstream_commands[] = {
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237
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238 { ngx_string("upstream"),
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239 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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240 ngx_http_upstream,
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241 0,
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242 0,
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243 NULL },
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244
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245 { ngx_string("server"),
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260
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246 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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247 ngx_http_upstream_server,
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248 NGX_HTTP_SRV_CONF_OFFSET,
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249 0,
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250 NULL },
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251
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252 ngx_null_command
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253 };
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254
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255
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256 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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257 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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258 NULL, /* postconfiguration */
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259
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260 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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261 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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262
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263 NULL, /* create server configuration */
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264 NULL, /* merge server configuration */
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265
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266 NULL, /* create location configuration */
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267 NULL /* merge location configuration */
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268 };
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126
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269
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28
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270
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271 ngx_module_t ngx_http_upstream_module = {
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58
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272 NGX_MODULE_V1,
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28
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273 &ngx_http_upstream_module_ctx, /* module context */
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200
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274 ngx_http_upstream_commands, /* module directives */
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28
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275 NGX_HTTP_MODULE, /* module type */
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90
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276 NULL, /* init master */
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28
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277 NULL, /* init module */
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90
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278 NULL, /* init process */
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279 NULL, /* init thread */
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280 NULL, /* exit thread */
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281 NULL, /* exit process */
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282 NULL, /* exit master */
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283 NGX_MODULE_V1_PADDING
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28
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284 };
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285
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286
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122
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287 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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288
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298
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289 { ngx_string("upstream_addr"), NULL,
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426
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290 ngx_http_upstream_addr_variable, 0,
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291 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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292
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186
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293 { ngx_string("upstream_status"), NULL,
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426
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294 ngx_http_upstream_status_variable, 0,
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295 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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296
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186
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297 { ngx_string("upstream_response_time"), NULL,
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426
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298 ngx_http_upstream_response_time_variable, 0,
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299 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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300
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430
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301 { ngx_string("upstream_response_length"), NULL,
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302 ngx_http_upstream_response_length_variable, 0,
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303 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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304
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186
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305 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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306 };
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307
|
|
|
308
|
|
412
|
309 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
310 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
311 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
312 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
313 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
314 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
315 { 0, 0 }
|
|
|
316 };
|
|
|
317
|
|
36
|
318 void
|
|
|
319 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
320 {
|
|
348
|
321 ngx_str_t *host;
|
|
|
322 ngx_uint_t i;
|
|
|
323 ngx_connection_t *c;
|
|
|
324 ngx_resolver_ctx_t *ctx, temp;
|
|
|
325 ngx_http_cleanup_t *cln;
|
|
|
326 ngx_http_upstream_t *u;
|
|
|
327 ngx_http_core_loc_conf_t *clcf;
|
|
|
328 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
329 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
330
|
|
|
331 c = r->connection;
|
|
|
332
|
|
|
333 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
334 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
335
|
|
|
336 if (c->read->timer_set) {
|
|
|
337 ngx_del_timer(c->read);
|
|
|
338 }
|
|
|
339
|
|
178
|
340 u = r->upstream;
|
|
|
341
|
|
|
342 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
343 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
344 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
345 }
|
|
126
|
346
|
|
28
|
347 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
348
|
|
|
349 if (!c->write->active) {
|
|
80
|
350 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
351 == NGX_ERROR)
|
|
28
|
352 {
|
|
|
353 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
354 return;
|
|
|
355 }
|
|
|
356 }
|
|
|
357 }
|
|
|
358
|
|
86
|
359 if (r->request_body) {
|
|
|
360 u->request_bufs = r->request_body->bufs;
|
|
|
361 }
|
|
58
|
362
|
|
86
|
363 if (u->create_request(r) != NGX_OK) {
|
|
28
|
364 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
365 return;
|
|
|
366 }
|
|
|
367
|
|
58
|
368 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
369
|
|
|
370 u->output.pool = r->pool;
|
|
|
371 u->output.bufs.num = 1;
|
|
58
|
372 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
373 u->output.output_filter = ngx_chain_writer;
|
|
|
374 u->output.filter_ctx = &u->writer;
|
|
|
375
|
|
|
376 u->writer.pool = r->pool;
|
|
|
377
|
|
296
|
378 if (r->upstream_states == NULL) {
|
|
|
379
|
|
|
380 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
381 sizeof(ngx_http_upstream_state_t));
|
|
|
382 if (r->upstream_states == NULL) {
|
|
|
383 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
384 return;
|
|
|
385 }
|
|
|
386
|
|
|
387 } else {
|
|
|
388
|
|
|
389 u->state = ngx_array_push(r->upstream_states);
|
|
|
390 if (u->state == NULL) {
|
|
|
391 ngx_http_upstream_finalize_request(r, u,
|
|
|
392 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
393 return;
|
|
|
394 }
|
|
|
395
|
|
|
396 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
397 }
|
|
|
398
|
|
142
|
399 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
400 if (cln == NULL) {
|
|
|
401 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
402 return;
|
|
|
403 }
|
|
|
404
|
|
|
405 cln->handler = ngx_http_upstream_cleanup;
|
|
|
406 cln->data = r;
|
|
|
407 u->cleanup = &cln->handler;
|
|
|
408
|
|
320
|
409 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
410
|
|
348
|
411 if (u->resolved == NULL) {
|
|
|
412
|
|
|
413 uscf = u->conf->upstream;
|
|
|
414
|
|
|
415 } else {
|
|
|
416
|
|
434
|
417 if (u->resolved->sockaddr) {
|
|
|
418
|
|
|
419 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
420 != NGX_OK)
|
|
|
421 {
|
|
|
422 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
423 return;
|
|
|
424 }
|
|
|
425
|
|
|
426 ngx_http_upstream_connect(r, u);
|
|
|
427
|
|
|
428 return;
|
|
|
429 }
|
|
|
430
|
|
356
|
431 host = &u->resolved->host;
|
|
348
|
432
|
|
|
433 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
434
|
|
|
435 uscfp = umcf->upstreams.elts;
|
|
|
436
|
|
|
437 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
438
|
|
|
439 uscf = uscfp[i];
|
|
|
440
|
|
|
441 if (uscf->host.len == host->len
|
|
416
|
442 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
443 || uscf->port == u->resolved->port)
|
|
348
|
444 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
445 {
|
|
|
446 goto found;
|
|
|
447 }
|
|
|
448 }
|
|
|
449
|
|
|
450 temp.name = *host;
|
|
|
451
|
|
|
452 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
453 if (ctx == NULL) {
|
|
|
454 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
455 return;
|
|
|
456 }
|
|
|
457
|
|
354
|
458 if (ctx == NGX_NO_RESOLVER) {
|
|
|
459 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
460 "no resolver defined to resolve %V", host);
|
|
|
461
|
|
|
462 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
463 return;
|
|
|
464 }
|
|
|
465
|
|
348
|
466 ctx->name = *host;
|
|
|
467 ctx->type = NGX_RESOLVE_A;
|
|
|
468 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
469 ctx->data = r;
|
|
|
470 ctx->timeout = clcf->resolver_timeout;
|
|
|
471
|
|
372
|
472 u->resolved->ctx = ctx;
|
|
|
473
|
|
348
|
474 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
475 u->resolved->ctx = NULL;
|
|
348
|
476 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
477 return;
|
|
|
478 }
|
|
|
479
|
|
|
480 return;
|
|
|
481 }
|
|
|
482
|
|
|
483 found:
|
|
|
484
|
|
|
485 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
486 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
487 return;
|
|
|
488 }
|
|
|
489
|
|
28
|
490 ngx_http_upstream_connect(r, u);
|
|
|
491 }
|
|
|
492
|
|
|
493
|
|
36
|
494 static void
|
|
348
|
495 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
496 {
|
|
|
497 ngx_http_request_t *r;
|
|
|
498 ngx_http_upstream_resolved_t *ur;
|
|
|
499
|
|
|
500 r = ctx->data;
|
|
|
501
|
|
|
502 r->upstream->resolved->ctx = NULL;
|
|
|
503
|
|
|
504 if (ctx->state) {
|
|
|
505 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
506 "%V could not be resolved (%i: %s)",
|
|
|
507 &ctx->name, ctx->state,
|
|
|
508 ngx_resolver_strerror(ctx->state));
|
|
|
509
|
|
|
510 ngx_resolve_name_done(ctx);
|
|
|
511 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
512 return;
|
|
|
513 }
|
|
|
514
|
|
|
515 ur = r->upstream->resolved;
|
|
|
516 ur->naddrs = ctx->naddrs;
|
|
|
517 ur->addrs = ctx->addrs;
|
|
|
518
|
|
|
519 #if (NGX_DEBUG)
|
|
|
520 {
|
|
|
521 in_addr_t addr;
|
|
|
522 ngx_uint_t i;
|
|
|
523
|
|
|
524 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
525 addr = ntohl(ur->addrs[i]);
|
|
|
526
|
|
|
527 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
528 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
529 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
530 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
531 }
|
|
|
532 }
|
|
|
533 #endif
|
|
|
534
|
|
|
535 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
536 ngx_resolve_name_done(ctx);
|
|
|
537 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
538 return;
|
|
|
539 }
|
|
|
540
|
|
|
541 ngx_resolve_name_done(ctx);
|
|
|
542
|
|
|
543 ngx_http_upstream_connect(r, r->upstream);
|
|
|
544 }
|
|
|
545
|
|
|
546
|
|
|
547 static void
|
|
426
|
548 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
549 {
|
|
|
550 ngx_connection_t *c;
|
|
|
551 ngx_http_request_t *r;
|
|
|
552 ngx_http_log_ctx_t *ctx;
|
|
|
553 ngx_http_upstream_t *u;
|
|
|
554
|
|
|
555 c = ev->data;
|
|
|
556 r = c->data;
|
|
|
557
|
|
|
558 u = r->upstream;
|
|
|
559 c = r->connection;
|
|
|
560
|
|
|
561 ctx = c->log->data;
|
|
|
562 ctx->current_request = r;
|
|
|
563
|
|
|
564 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
565 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
566
|
|
|
567 if (ev->write) {
|
|
430
|
568 u->write_event_handler(r, u);
|
|
426
|
569
|
|
|
570 } else {
|
|
430
|
571 u->read_event_handler(r, u);
|
|
426
|
572 }
|
|
|
573
|
|
|
574 ngx_http_run_posted_requests(c);
|
|
|
575 }
|
|
|
576
|
|
|
577
|
|
|
578 static void
|
|
58
|
579 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
580 {
|
|
|
581 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
582 }
|
|
|
583
|
|
|
584
|
|
|
585 static void
|
|
|
586 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
587 {
|
|
|
588 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
589 }
|
|
|
590
|
|
|
591
|
|
|
592 static void
|
|
|
593 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
594 ngx_event_t *ev)
|
|
28
|
595 {
|
|
|
596 int n;
|
|
|
597 char buf[1];
|
|
126
|
598 ngx_err_t err;
|
|
28
|
599 ngx_connection_t *c;
|
|
|
600 ngx_http_upstream_t *u;
|
|
|
601
|
|
76
|
602 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
603 "http upstream check client, write event:%d, \"%V\"",
|
|
|
604 ev->write, &r->uri);
|
|
28
|
605
|
|
58
|
606 c = r->connection;
|
|
32
|
607 u = r->upstream;
|
|
|
608
|
|
132
|
609 if (c->error) {
|
|
76
|
610 ngx_http_upstream_finalize_request(r, u,
|
|
|
611 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
612 return;
|
|
|
613 }
|
|
|
614
|
|
32
|
615 if (u->peer.connection == NULL) {
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
28
|
619 #if (NGX_HAVE_KQUEUE)
|
|
|
620
|
|
|
621 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
622
|
|
|
623 if (!ev->pending_eof) {
|
|
|
624 return;
|
|
|
625 }
|
|
|
626
|
|
|
627 ev->eof = 1;
|
|
132
|
628 c->error = 1;
|
|
28
|
629
|
|
|
630 if (ev->kq_errno) {
|
|
|
631 ev->error = 1;
|
|
|
632 }
|
|
|
633
|
|
340
|
634 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
635 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
636 "kevent() reported that client closed prematurely "
|
|
|
637 "connection, so upstream connection is closed too");
|
|
28
|
638 ngx_http_upstream_finalize_request(r, u,
|
|
|
639 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
640 return;
|
|
|
641 }
|
|
|
642
|
|
|
643 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
644 "kevent() reported that client closed "
|
|
|
645 "prematurely connection");
|
|
|
646
|
|
|
647 if (u->peer.connection == NULL) {
|
|
|
648 ngx_http_upstream_finalize_request(r, u,
|
|
|
649 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
650 return;
|
|
|
651 }
|
|
|
652
|
|
|
653 return;
|
|
|
654 }
|
|
|
655
|
|
|
656 #endif
|
|
|
657
|
|
|
658 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
659
|
|
|
660 err = ngx_socket_errno;
|
|
|
661
|
|
286
|
662 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
663 "http upstream recv(): %d", n);
|
|
|
664
|
|
28
|
665 /*
|
|
|
666 * we do not need to disable the write event because
|
|
|
667 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
668 */
|
|
|
669
|
|
|
670 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
671 return;
|
|
|
672 }
|
|
|
673
|
|
|
674 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
675 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
676 ngx_http_upstream_finalize_request(r, u,
|
|
|
677 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
678 return;
|
|
|
679 }
|
|
|
680 }
|
|
|
681
|
|
|
682 if (n > 0) {
|
|
|
683 return;
|
|
|
684 }
|
|
|
685
|
|
|
686 if (n == -1) {
|
|
|
687 if (err == NGX_EAGAIN) {
|
|
|
688 return;
|
|
|
689 }
|
|
|
690
|
|
|
691 ev->error = 1;
|
|
|
692
|
|
32
|
693 } else { /* n == 0 */
|
|
28
|
694 err = 0;
|
|
|
695 }
|
|
|
696
|
|
78
|
697 ev->eof = 1;
|
|
132
|
698 c->error = 1;
|
|
78
|
699
|
|
340
|
700 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
701 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
702 "client closed prematurely connection, "
|
|
|
703 "so upstream connection is closed too");
|
|
|
704 ngx_http_upstream_finalize_request(r, u,
|
|
|
705 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
706 return;
|
|
|
707 }
|
|
|
708
|
|
|
709 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
710 "client closed prematurely connection");
|
|
|
711
|
|
|
712 if (u->peer.connection == NULL) {
|
|
|
713 ngx_http_upstream_finalize_request(r, u,
|
|
|
714 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
715 return;
|
|
|
716 }
|
|
|
717 }
|
|
|
718
|
|
|
719
|
|
36
|
720 static void
|
|
|
721 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
722 {
|
|
140
|
723 ngx_int_t rc;
|
|
214
|
724 ngx_time_t *tp;
|
|
140
|
725 ngx_connection_t *c;
|
|
28
|
726
|
|
32
|
727 r->connection->log->action = "connecting to upstream";
|
|
28
|
728
|
|
|
729 r->connection->single_connection = 0;
|
|
|
730
|
|
262
|
731 if (u->state && u->state->response_sec) {
|
|
214
|
732 tp = ngx_timeofday();
|
|
262
|
733 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
734 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
735 }
|
|
|
736
|
|
296
|
737 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
738 if (u->state == NULL) {
|
|
|
739 ngx_http_upstream_finalize_request(r, u,
|
|
|
740 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
741 return;
|
|
|
742 }
|
|
|
743
|
|
|
744 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
745
|
|
|
746 tp = ngx_timeofday();
|
|
262
|
747 u->state->response_sec = tp->sec;
|
|
|
748 u->state->response_msec = tp->msec;
|
|
214
|
749
|
|
28
|
750 rc = ngx_event_connect_peer(&u->peer);
|
|
|
751
|
|
|
752 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
753 "http upstream connect: %i", rc);
|
|
|
754
|
|
|
755 if (rc == NGX_ERROR) {
|
|
|
756 ngx_http_upstream_finalize_request(r, u,
|
|
|
757 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
758 return;
|
|
|
759 }
|
|
|
760
|
|
356
|
761 u->state->peer = u->peer.name;
|
|
|
762
|
|
92
|
763 if (rc == NGX_BUSY) {
|
|
|
764 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
765 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
766 return;
|
|
92
|
767 }
|
|
|
768
|
|
326
|
769 if (rc == NGX_DECLINED) {
|
|
28
|
770 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
771 return;
|
|
|
772 }
|
|
|
773
|
|
126
|
774 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
775
|
|
28
|
776 c = u->peer.connection;
|
|
|
777
|
|
|
778 c->data = r;
|
|
140
|
779
|
|
426
|
780 c->write->handler = ngx_http_upstream_handler;
|
|
|
781 c->read->handler = ngx_http_upstream_handler;
|
|
|
782
|
|
|
783 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
784 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
785
|
|
326
|
786 c->sendfile &= r->connection->sendfile;
|
|
372
|
787 u->output.sendfile = c->sendfile;
|
|
28
|
788
|
|
|
789 c->pool = r->pool;
|
|
|
790 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
791
|
|
|
792 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
793
|
|
|
794 u->writer.out = NULL;
|
|
|
795 u->writer.last = &u->writer.out;
|
|
|
796 u->writer.connection = c;
|
|
|
797 u->writer.limit = 0;
|
|
|
798
|
|
|
799 if (u->request_sent) {
|
|
58
|
800 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
801 ngx_http_upstream_finalize_request(r, u,
|
|
|
802 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
803 return;
|
|
|
804 }
|
|
28
|
805 }
|
|
|
806
|
|
276
|
807 if (r->request_body
|
|
|
808 && r->request_body->buf
|
|
|
809 && r->request_body->temp_file
|
|
|
810 && r == r->main)
|
|
|
811 {
|
|
122
|
812 /*
|
|
|
813 * the r->request_body->buf can be reused for one request only,
|
|
|
814 * the subrequests should allocate their own temporay bufs
|
|
|
815 */
|
|
|
816
|
|
|
817 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
818 if (u->output.free == NULL) {
|
|
|
819 ngx_http_upstream_finalize_request(r, u,
|
|
|
820 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
821 return;
|
|
28
|
822 }
|
|
122
|
823
|
|
|
824 u->output.free->buf = r->request_body->buf;
|
|
|
825 u->output.free->next = NULL;
|
|
|
826 u->output.allocated = 1;
|
|
|
827
|
|
|
828 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
829 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
830 r->request_body->buf->tag = u->output.tag;
|
|
28
|
831 }
|
|
|
832
|
|
|
833 u->request_sent = 0;
|
|
|
834
|
|
|
835 if (rc == NGX_AGAIN) {
|
|
|
836 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
837 return;
|
|
|
838 }
|
|
|
839
|
|
126
|
840 #if (NGX_HTTP_SSL)
|
|
|
841
|
|
348
|
842 if (u->ssl && c->ssl == NULL) {
|
|
140
|
843 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
844 return;
|
|
|
845 }
|
|
|
846
|
|
|
847 #endif
|
|
|
848
|
|
28
|
849 ngx_http_upstream_send_request(r, u);
|
|
|
850 }
|
|
|
851
|
|
|
852
|
|
126
|
853 #if (NGX_HTTP_SSL)
|
|
|
854
|
|
|
855 static void
|
|
140
|
856 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
857 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
858 {
|
|
260
|
859 ngx_int_t rc;
|
|
140
|
860
|
|
|
861 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
862 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
454
|
863 != NGX_OK)
|
|
140
|
864 {
|
|
|
865 ngx_http_upstream_finalize_request(r, u,
|
|
|
866 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
867 return;
|
|
|
868 }
|
|
|
869
|
|
|
870 c->sendfile = 0;
|
|
168
|
871 u->output.sendfile = 0;
|
|
140
|
872
|
|
398
|
873 if (u->conf->ssl_session_reuse) {
|
|
|
874 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
875 ngx_http_upstream_finalize_request(r, u,
|
|
|
876 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
877 return;
|
|
|
878 }
|
|
140
|
879 }
|
|
|
880
|
|
190
|
881 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
882
|
|
140
|
883 rc = ngx_ssl_handshake(c);
|
|
|
884
|
|
|
885 if (rc == NGX_AGAIN) {
|
|
|
886 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
887 return;
|
|
|
888 }
|
|
|
889
|
|
|
890 ngx_http_upstream_ssl_handshake(c);
|
|
|
891 }
|
|
|
892
|
|
|
893
|
|
|
894 static void
|
|
126
|
895 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
896 {
|
|
|
897 ngx_http_request_t *r;
|
|
|
898 ngx_http_upstream_t *u;
|
|
|
899
|
|
|
900 r = c->data;
|
|
|
901 u = r->upstream;
|
|
|
902
|
|
|
903 if (c->ssl->handshaked) {
|
|
|
904
|
|
398
|
905 if (u->conf->ssl_session_reuse) {
|
|
|
906 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
907 }
|
|
260
|
908
|
|
426
|
909 c->write->handler = ngx_http_upstream_handler;
|
|
|
910 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
911
|
|
|
912 ngx_http_upstream_send_request(r, u);
|
|
|
913
|
|
|
914 return;
|
|
|
915 }
|
|
|
916
|
|
|
917 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
918
|
|
|
919 }
|
|
|
920
|
|
|
921 #endif
|
|
|
922
|
|
|
923
|
|
58
|
924 static ngx_int_t
|
|
36
|
925 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
926 {
|
|
|
927 ngx_chain_t *cl;
|
|
|
928
|
|
58
|
929 if (u->reinit_request(r) != NGX_OK) {
|
|
|
930 return NGX_ERROR;
|
|
|
931 }
|
|
|
932
|
|
356
|
933 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
934
|
|
|
935 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
936 sizeof(ngx_table_elt_t))
|
|
|
937 != NGX_OK)
|
|
58
|
938 {
|
|
|
939 return NGX_ERROR;
|
|
28
|
940 }
|
|
|
941
|
|
|
942 /* reinit the request chain */
|
|
126
|
943
|
|
58
|
944 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
945 cl->buf->pos = cl->buf->start;
|
|
|
946 cl->buf->file_pos = 0;
|
|
|
947 }
|
|
|
948
|
|
58
|
949 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
950
|
|
122
|
951 if (r->request_body && r->request_body->temp_file
|
|
146
|
952 && r != r->main && u->output.buf)
|
|
122
|
953 {
|
|
|
954 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
955 if (u->output.free == NULL) {
|
|
|
956 return NGX_ERROR;
|
|
58
|
957 }
|
|
122
|
958
|
|
|
959 u->output.free->buf = u->output.buf;
|
|
|
960 u->output.free->next = NULL;
|
|
|
961
|
|
|
962 u->output.buf->pos = u->output.buf->start;
|
|
|
963 u->output.buf->last = u->output.buf->start;
|
|
58
|
964 }
|
|
28
|
965
|
|
|
966 u->output.buf = NULL;
|
|
|
967 u->output.in = NULL;
|
|
|
968 u->output.busy = NULL;
|
|
126
|
969
|
|
130
|
970 /* reinit u->buffer */
|
|
126
|
971
|
|
28
|
972 #if 0
|
|
|
973 if (u->cache) {
|
|
130
|
974 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
975 u->buffer.last = u->buffer.pos;
|
|
28
|
976
|
|
|
977 } else {
|
|
130
|
978 u->buffer.pos = u->buffer.start;
|
|
|
979 u->buffer.last = u->buffer.start;
|
|
28
|
980 }
|
|
|
981 #else
|
|
58
|
982
|
|
130
|
983 u->buffer.pos = u->buffer.start;
|
|
|
984 u->buffer.last = u->buffer.start;
|
|
58
|
985
|
|
28
|
986 #endif
|
|
|
987
|
|
58
|
988 return NGX_OK;
|
|
28
|
989 }
|
|
|
990
|
|
|
991
|
|
36
|
992 static void
|
|
|
993 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
994 {
|
|
294
|
995 ngx_int_t rc;
|
|
32
|
996 ngx_connection_t *c;
|
|
126
|
997
|
|
28
|
998 c = u->peer.connection;
|
|
|
999
|
|
|
1000 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1001 "http upstream send request");
|
|
|
1002
|
|
294
|
1003 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1004 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1005 return;
|
|
28
|
1006 }
|
|
|
1007
|
|
32
|
1008 c->log->action = "sending request to upstream";
|
|
28
|
1009
|
|
58
|
1010 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1011
|
|
|
1012 u->request_sent = 1;
|
|
|
1013
|
|
|
1014 if (rc == NGX_ERROR) {
|
|
|
1015 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1016 return;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019 if (c->write->timer_set) {
|
|
|
1020 ngx_del_timer(c->write);
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 if (rc == NGX_AGAIN) {
|
|
|
1024 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1025
|
|
430
|
1026 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1027 ngx_http_upstream_finalize_request(r, u,
|
|
|
1028 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1029 return;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 return;
|
|
|
1033 }
|
|
|
1034
|
|
|
1035 /* rc == NGX_OK */
|
|
|
1036
|
|
|
1037 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1038 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1039 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1040 ngx_tcp_push_n " failed");
|
|
|
1041 ngx_http_upstream_finalize_request(r, u,
|
|
|
1042 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1043 return;
|
|
28
|
1044 }
|
|
|
1045
|
|
|
1046 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1047 }
|
|
126
|
1048
|
|
28
|
1049 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1050
|
|
|
1051 #if 1
|
|
|
1052 if (c->read->ready) {
|
|
126
|
1053
|
|
28
|
1054 /* post aio operation */
|
|
|
1055
|
|
|
1056 /*
|
|
|
1057 * TODO comment
|
|
|
1058 * although we can post aio operation just in the end
|
|
|
1059 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1060 * it's better to do here because we postpone header buffer allocation
|
|
|
1061 */
|
|
|
1062
|
|
430
|
1063 ngx_http_upstream_process_header(r, u);
|
|
28
|
1064 return;
|
|
|
1065 }
|
|
|
1066 #endif
|
|
|
1067
|
|
426
|
1068 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1069
|
|
430
|
1070 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1071 ngx_http_upstream_finalize_request(r, u,
|
|
|
1072 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1073 return;
|
|
|
1074 }
|
|
|
1075 }
|
|
|
1076
|
|
|
1077
|
|
36
|
1078 static void
|
|
430
|
1079 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1080 ngx_http_upstream_t *u)
|
|
28
|
1081 {
|
|
430
|
1082 ngx_connection_t *c;
|
|
|
1083
|
|
|
1084 c = u->peer.connection;
|
|
|
1085
|
|
|
1086 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1087 "http upstream send request handler");
|
|
|
1088
|
|
430
|
1089 if (c->write->timedout) {
|
|
28
|
1090 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1091 return;
|
|
|
1092 }
|
|
|
1093
|
|
140
|
1094 #if (NGX_HTTP_SSL)
|
|
|
1095
|
|
348
|
1096 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1097 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1098 return;
|
|
|
1099 }
|
|
|
1100
|
|
|
1101 #endif
|
|
|
1102
|
|
200
|
1103 if (u->header_sent) {
|
|
426
|
1104 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1105
|
|
430
|
1106 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1107
|
|
|
1108 return;
|
|
|
1109 }
|
|
|
1110
|
|
28
|
1111 ngx_http_upstream_send_request(r, u);
|
|
|
1112 }
|
|
|
1113
|
|
|
1114
|
|
36
|
1115 static void
|
|
430
|
1116 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1117 {
|
|
64
|
1118 ssize_t n;
|
|
|
1119 ngx_int_t rc;
|
|
122
|
1120 ngx_str_t *uri, args;
|
|
198
|
1121 ngx_uint_t i, flags;
|
|
64
|
1122 ngx_list_part_t *part;
|
|
|
1123 ngx_table_elt_t *h;
|
|
|
1124 ngx_connection_t *c;
|
|
|
1125 ngx_http_upstream_header_t *hh;
|
|
|
1126 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1127
|
|
430
|
1128 c = u->peer.connection;
|
|
|
1129
|
|
|
1130 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1131 "http upstream process header");
|
|
28
|
1132
|
|
32
|
1133 c->log->action = "reading response header from upstream";
|
|
28
|
1134
|
|
430
|
1135 if (c->read->timedout) {
|
|
28
|
1136 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1137 return;
|
|
|
1138 }
|
|
126
|
1139
|
|
294
|
1140 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1141 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1142 return;
|
|
|
1143 }
|
|
|
1144
|
|
130
|
1145 if (u->buffer.start == NULL) {
|
|
|
1146 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1147 if (u->buffer.start == NULL) {
|
|
28
|
1148 ngx_http_upstream_finalize_request(r, u,
|
|
|
1149 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1150 return;
|
|
|
1151 }
|
|
|
1152
|
|
130
|
1153 u->buffer.pos = u->buffer.start;
|
|
|
1154 u->buffer.last = u->buffer.start;
|
|
|
1155 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1156 u->buffer.temporary = 1;
|
|
|
1157
|
|
|
1158 u->buffer.tag = u->output.tag;
|
|
28
|
1159
|
|
356
|
1160 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1161 sizeof(ngx_table_elt_t))
|
|
|
1162 != NGX_OK)
|
|
58
|
1163 {
|
|
|
1164 ngx_http_upstream_finalize_request(r, u,
|
|
|
1165 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1166 return;
|
|
|
1167 }
|
|
|
1168
|
|
28
|
1169 #if 0
|
|
|
1170 if (u->cache) {
|
|
130
|
1171 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1172 u->buffer.last = u->buffer.pos;
|
|
28
|
1173 }
|
|
|
1174 #endif
|
|
|
1175 }
|
|
|
1176
|
|
424
|
1177 for ( ;; ) {
|
|
|
1178
|
|
|
1179 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1180
|
|
|
1181 if (n == NGX_AGAIN) {
|
|
28
|
1182 #if 0
|
|
424
|
1183 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1184 #endif
|
|
|
1185
|
|
430
|
1186 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
424
|
1187 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1188 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1189 return;
|
|
|
1190 }
|
|
|
1191
|
|
|
1192 return;
|
|
|
1193 }
|
|
|
1194
|
|
|
1195 if (n == 0) {
|
|
430
|
1196 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1197 "upstream prematurely closed connection");
|
|
|
1198 }
|
|
|
1199
|
|
|
1200 if (n == NGX_ERROR || n == 0) {
|
|
|
1201 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1202 return;
|
|
|
1203 }
|
|
|
1204
|
|
424
|
1205 u->buffer.last += n;
|
|
28
|
1206
|
|
|
1207 #if 0
|
|
424
|
1208 u->valid_header_in = 0;
|
|
|
1209
|
|
|
1210 u->peer.cached = 0;
|
|
28
|
1211 #endif
|
|
|
1212
|
|
424
|
1213 rc = u->process_header(r);
|
|
|
1214
|
|
|
1215 if (rc == NGX_AGAIN) {
|
|
|
1216
|
|
|
1217 if (u->buffer.pos == u->buffer.end) {
|
|
430
|
1218 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1219 "upstream sent too big header");
|
|
|
1220
|
|
|
1221 ngx_http_upstream_next(r, u,
|
|
|
1222 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1223 return;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 continue;
|
|
28
|
1227 }
|
|
|
1228
|
|
424
|
1229 break;
|
|
28
|
1230 }
|
|
|
1231
|
|
|
1232 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1233 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1234 return;
|
|
|
1235 }
|
|
|
1236
|
|
356
|
1237 if (rc == NGX_ERROR) {
|
|
28
|
1238 ngx_http_upstream_finalize_request(r, u,
|
|
|
1239 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1240 return;
|
|
|
1241 }
|
|
|
1242
|
|
|
1243 /* rc == NGX_OK */
|
|
|
1244
|
|
412
|
1245 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1246
|
|
|
1247 if (r->subrequest_in_memory) {
|
|
|
1248 u->buffer.last = u->buffer.pos;
|
|
58
|
1249 }
|
|
|
1250
|
|
412
|
1251 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1252 return;
|
|
|
1253 }
|
|
|
1254
|
|
412
|
1255 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1256 return;
|
|
|
1257 }
|
|
58
|
1258 }
|
|
|
1259
|
|
230
|
1260 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1261
|
|
356
|
1262 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1263
|
|
64
|
1264 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1265
|
|
356
|
1266 part = &u->headers_in.headers.part;
|
|
64
|
1267 h = part->elts;
|
|
|
1268
|
|
|
1269 for (i = 0; /* void */; i++) {
|
|
|
1270
|
|
|
1271 if (i >= part->nelts) {
|
|
|
1272 if (part->next == NULL) {
|
|
|
1273 break;
|
|
|
1274 }
|
|
126
|
1275
|
|
64
|
1276 part = part->next;
|
|
|
1277 h = part->elts;
|
|
|
1278 i = 0;
|
|
|
1279 }
|
|
|
1280
|
|
198
|
1281 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1282 h[i].lowcase_key, h[i].key.len);
|
|
|
1283
|
|
|
1284 if (hh && hh->redirect) {
|
|
|
1285 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1286 ngx_http_finalize_request(r,
|
|
244
|
1287 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1288 return;
|
|
|
1289 }
|
|
|
1290 }
|
|
|
1291 }
|
|
|
1292
|
|
356
|
1293 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1294 args.len = 0;
|
|
|
1295 args.data = NULL;
|
|
|
1296 flags = 0;
|
|
|
1297
|
|
|
1298 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1299 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1300 return;
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1304 r->zero_in_uri = 1;
|
|
|
1305 }
|
|
|
1306
|
|
202
|
1307 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1308 r->method = NGX_HTTP_GET;
|
|
|
1309 }
|
|
|
1310
|
|
398
|
1311 r->valid_unparsed_uri = 0;
|
|
|
1312
|
|
122
|
1313 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1314 return;
|
|
|
1315 }
|
|
|
1316
|
|
356
|
1317 part = &u->headers_in.headers.part;
|
|
58
|
1318 h = part->elts;
|
|
|
1319
|
|
|
1320 for (i = 0; /* void */; i++) {
|
|
28
|
1321
|
|
58
|
1322 if (i >= part->nelts) {
|
|
|
1323 if (part->next == NULL) {
|
|
|
1324 break;
|
|
|
1325 }
|
|
126
|
1326
|
|
58
|
1327 part = part->next;
|
|
|
1328 h = part->elts;
|
|
|
1329 i = 0;
|
|
|
1330 }
|
|
|
1331
|
|
198
|
1332 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1333 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1334 {
|
|
198
|
1335 continue;
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1339 h[i].lowcase_key, h[i].key.len);
|
|
|
1340
|
|
|
1341 if (hh) {
|
|
|
1342 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1343 ngx_http_upstream_finalize_request(r, u,
|
|
|
1344 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1345 return;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 continue;
|
|
|
1349 }
|
|
|
1350
|
|
|
1351 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1352 ngx_http_upstream_finalize_request(r, u,
|
|
|
1353 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1354 return;
|
|
|
1355 }
|
|
|
1356 }
|
|
|
1357
|
|
198
|
1358 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1359 r->headers_out.server->hash = 0;
|
|
|
1360 }
|
|
|
1361
|
|
|
1362 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1363 r->headers_out.date->hash = 0;
|
|
|
1364 }
|
|
|
1365
|
|
78
|
1366 r->headers_out.status = u->headers_in.status_n;
|
|
|
1367 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1368
|
|
364
|
1369 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1370
|
|
130
|
1371 if (r->headers_out.content_length_n != -1) {
|
|
|
1372 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1373
|
|
|
1374 } else {
|
|
|
1375 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1376 }
|
|
|
1377
|
|
248
|
1378 if (!r->subrequest_in_memory) {
|
|
|
1379 ngx_http_upstream_send_response(r, u);
|
|
|
1380 return;
|
|
|
1381 }
|
|
|
1382
|
|
|
1383 /* subrequest content in memory */
|
|
|
1384
|
|
|
1385 if (u->input_filter == NULL) {
|
|
|
1386 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1387 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1388 u->input_filter_ctx = r;
|
|
|
1389 }
|
|
|
1390
|
|
|
1391 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1392 ngx_http_upstream_finalize_request(r, u,
|
|
|
1393 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1394 return;
|
|
|
1395 }
|
|
|
1396
|
|
420
|
1397 n = u->buffer.last - u->buffer.pos;
|
|
|
1398
|
|
|
1399 if (n) {
|
|
|
1400 u->buffer.last -= n;
|
|
|
1401
|
|
430
|
1402 u->state->response_length += n;
|
|
|
1403
|
|
420
|
1404 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1405 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1406 return;
|
|
|
1407 }
|
|
|
1408
|
|
420
|
1409 if (u->length == 0) {
|
|
|
1410 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1411 return;
|
|
|
1412 }
|
|
248
|
1413 }
|
|
|
1414
|
|
426
|
1415 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1416
|
|
430
|
1417 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1418 }
|
|
|
1419
|
|
|
1420
|
|
294
|
1421 static ngx_int_t
|
|
412
|
1422 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1423 {
|
|
|
1424 ngx_uint_t status;
|
|
|
1425 ngx_http_upstream_next_t *un;
|
|
|
1426
|
|
|
1427 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
|
1428 return NGX_DECLINED;
|
|
|
1429 }
|
|
|
1430
|
|
|
1431 status = u->headers_in.status_n;
|
|
|
1432
|
|
|
1433 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1434
|
|
|
1435 if (status != un->status) {
|
|
|
1436 continue;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1440 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1441 return NGX_OK;
|
|
|
1442 }
|
|
|
1443
|
|
|
1444 #if (NGX_HTTP_CACHE)
|
|
|
1445
|
|
|
1446 if (u->peer.tries == 0 && u->stale && (u->conf->use_stale & un->mask)) {
|
|
|
1447 ngx_http_upstream_finalize_request(r, u,
|
|
|
1448 ngx_http_send_cached_response(r));
|
|
|
1449 return NGX_OK;
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 #endif
|
|
|
1453 }
|
|
|
1454
|
|
|
1455 return NGX_DECLINED;
|
|
|
1456 }
|
|
|
1457
|
|
|
1458
|
|
|
1459 static ngx_int_t
|
|
|
1460 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1461 ngx_http_upstream_t *u)
|
|
|
1462 {
|
|
|
1463 ngx_int_t status;
|
|
|
1464 ngx_uint_t i;
|
|
|
1465 ngx_table_elt_t *h;
|
|
|
1466 ngx_http_err_page_t *err_page;
|
|
|
1467 ngx_http_core_loc_conf_t *clcf;
|
|
|
1468
|
|
438
|
1469 status = u->headers_in.status_n;
|
|
|
1470
|
|
|
1471 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1472 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1473 return NGX_OK;
|
|
|
1474 }
|
|
|
1475
|
|
412
|
1476 if (!u->conf->intercept_errors) {
|
|
|
1477 return NGX_DECLINED;
|
|
|
1478 }
|
|
|
1479
|
|
|
1480 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1481
|
|
|
1482 if (clcf->error_pages == NULL) {
|
|
|
1483 return NGX_DECLINED;
|
|
|
1484 }
|
|
|
1485
|
|
|
1486 err_page = clcf->error_pages->elts;
|
|
|
1487 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1488
|
|
|
1489 if (err_page[i].status == status) {
|
|
|
1490
|
|
|
1491 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1492
|
|
|
1493 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1494
|
|
|
1495 if (h == NULL) {
|
|
|
1496 ngx_http_upstream_finalize_request(r, u,
|
|
|
1497 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1498 return NGX_OK;
|
|
|
1499 }
|
|
|
1500
|
|
|
1501 *h = *u->headers_in.www_authenticate;
|
|
|
1502
|
|
|
1503 r->headers_out.www_authenticate = h;
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1507
|
|
|
1508 return NGX_OK;
|
|
|
1509 }
|
|
|
1510 }
|
|
|
1511
|
|
|
1512 return NGX_DECLINED;
|
|
|
1513 }
|
|
|
1514
|
|
|
1515
|
|
|
1516 static ngx_int_t
|
|
294
|
1517 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1518 {
|
|
|
1519 int err;
|
|
|
1520 socklen_t len;
|
|
|
1521
|
|
|
1522 #if (NGX_HAVE_KQUEUE)
|
|
|
1523
|
|
|
1524 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1525 if (c->write->pending_eof) {
|
|
336
|
1526 c->log->action = "connecting to upstream";
|
|
296
|
1527 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1528 "kevent() reported that connect() failed");
|
|
|
1529 return NGX_ERROR;
|
|
|
1530 }
|
|
294
|
1531
|
|
|
1532 } else
|
|
|
1533 #endif
|
|
|
1534 {
|
|
296
|
1535 err = 0;
|
|
|
1536 len = sizeof(int);
|
|
|
1537
|
|
|
1538 /*
|
|
|
1539 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1540 * Solaris returns -1 and sets errno
|
|
|
1541 */
|
|
|
1542
|
|
|
1543 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1544 == -1)
|
|
|
1545 {
|
|
|
1546 err = ngx_errno;
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 if (err) {
|
|
336
|
1550 c->log->action = "connecting to upstream";
|
|
296
|
1551 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1552 return NGX_ERROR;
|
|
|
1553 }
|
|
294
|
1554 }
|
|
|
1555
|
|
|
1556 return NGX_OK;
|
|
|
1557 }
|
|
|
1558
|
|
|
1559
|
|
248
|
1560 static void
|
|
430
|
1561 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1562 ngx_http_upstream_t *u)
|
|
248
|
1563 {
|
|
430
|
1564 size_t size;
|
|
|
1565 ssize_t n;
|
|
|
1566 ngx_buf_t *b;
|
|
|
1567 ngx_event_t *rev;
|
|
|
1568 ngx_connection_t *c;
|
|
|
1569
|
|
|
1570 c = u->peer.connection;
|
|
|
1571 rev = c->read;
|
|
248
|
1572
|
|
|
1573 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1574 "http upstream process body on memory");
|
|
|
1575
|
|
|
1576 if (rev->timedout) {
|
|
|
1577 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1578 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1579 return;
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 b = &u->buffer;
|
|
|
1583
|
|
|
1584 for ( ;; ) {
|
|
|
1585
|
|
|
1586 size = b->end - b->last;
|
|
|
1587
|
|
|
1588 if (size == 0) {
|
|
|
1589 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1590 "upstream buffer is too small to read repsonse");
|
|
|
1591 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1592 return;
|
|
|
1593 }
|
|
|
1594
|
|
|
1595 n = c->recv(c, b->last, size);
|
|
|
1596
|
|
|
1597 if (n == NGX_AGAIN) {
|
|
|
1598 break;
|
|
|
1599 }
|
|
|
1600
|
|
|
1601 if (n == 0 || n == NGX_ERROR) {
|
|
|
1602 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1603 return;
|
|
|
1604 }
|
|
|
1605
|
|
430
|
1606 u->state->response_length += n;
|
|
|
1607
|
|
248
|
1608 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1609 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1610 return;
|
|
|
1611 }
|
|
|
1612
|
|
|
1613 if (!rev->ready) {
|
|
|
1614 break;
|
|
|
1615 }
|
|
|
1616 }
|
|
|
1617
|
|
430
|
1618 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1619 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1620 return;
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 if (rev->active) {
|
|
|
1624 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1625
|
|
|
1626 } else if (rev->timer_set) {
|
|
|
1627 ngx_del_timer(rev);
|
|
|
1628 }
|
|
230
|
1629 }
|
|
|
1630
|
|
|
1631
|
|
|
1632 static void
|
|
|
1633 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1634 {
|
|
|
1635 int tcp_nodelay;
|
|
430
|
1636 ssize_t n;
|
|
230
|
1637 ngx_int_t rc;
|
|
|
1638 ngx_event_pipe_t *p;
|
|
|
1639 ngx_connection_t *c;
|
|
|
1640 ngx_pool_cleanup_t *cl;
|
|
|
1641 ngx_pool_cleanup_file_t *clf;
|
|
|
1642 ngx_http_core_loc_conf_t *clcf;
|
|
|
1643
|
|
58
|
1644 rc = ngx_http_send_header(r);
|
|
28
|
1645
|
|
274
|
1646 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1647 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1648 return;
|
|
|
1649 }
|
|
|
1650
|
|
|
1651 u->header_sent = 1;
|
|
|
1652
|
|
122
|
1653 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1654 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1655 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1656 clf = cl->data;
|
|
|
1657
|
|
|
1658 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1659 cl->handler(clf);
|
|
|
1660 cl->handler = NULL;
|
|
208
|
1661 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1662 break;
|
|
|
1663 }
|
|
|
1664 }
|
|
|
1665 }
|
|
|
1666 }
|
|
|
1667
|
|
132
|
1668 c = r->connection;
|
|
|
1669
|
|
130
|
1670 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1671
|
|
198
|
1672 if (!u->buffering) {
|
|
130
|
1673
|
|
|
1674 if (u->input_filter == NULL) {
|
|
|
1675 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1676 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1677 u->input_filter_ctx = r;
|
|
|
1678 }
|
|
|
1679
|
|
428
|
1680 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
1681 r->write_event_handler =
|
|
|
1682 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1683
|
|
|
1684 r->limit_rate = 0;
|
|
|
1685
|
|
|
1686 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1687 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1688 return;
|
|
|
1689 }
|
|
|
1690
|
|
132
|
1691 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1692 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1693
|
|
|
1694 tcp_nodelay = 1;
|
|
|
1695
|
|
|
1696 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1697 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1698 {
|
|
|
1699 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1700 "setsockopt(TCP_NODELAY) failed");
|
|
|
1701 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1702 return;
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1706 }
|
|
|
1707
|
|
430
|
1708 n = u->buffer.last - u->buffer.pos;
|
|
|
1709
|
|
|
1710 if (n) {
|
|
130
|
1711 u->buffer.last = u->buffer.pos;
|
|
|
1712
|
|
430
|
1713 u->state->response_length += n;
|
|
|
1714
|
|
|
1715 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
1716 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1717 return;
|
|
|
1718 }
|
|
|
1719
|
|
428
|
1720 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
1721
|
|
|
1722 } else {
|
|
|
1723 u->buffer.pos = u->buffer.start;
|
|
|
1724 u->buffer.last = u->buffer.start;
|
|
|
1725
|
|
|
1726 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1727 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1728 return;
|
|
|
1729 }
|
|
336
|
1730
|
|
|
1731 if (u->peer.connection->read->ready) {
|
|
430
|
1732 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
1733 }
|
|
130
|
1734 }
|
|
|
1735
|
|
|
1736 return;
|
|
|
1737 }
|
|
|
1738
|
|
28
|
1739 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1740
|
|
|
1741 #if 0
|
|
|
1742
|
|
|
1743 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1744 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1745 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1746 ngx_close_file_n " \"%s\" failed",
|
|
|
1747 u->cache->ctx.file.name.data);
|
|
|
1748 }
|
|
|
1749 }
|
|
|
1750
|
|
340
|
1751 if (u->cacheable) {
|
|
130
|
1752 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1753
|
|
|
1754 header->expires = u->cache->ctx.expires;
|
|
|
1755 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1756 header->date = u->cache->ctx.date;
|
|
|
1757 header->length = r->headers_out.content_length_n;
|
|
|
1758 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1759
|
|
|
1760 header->key_len = u->cache->ctx.key0.len;
|
|
|
1761 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1762 header->key[header->key_len] = LF;
|
|
|
1763 }
|
|
|
1764
|
|
|
1765 #endif
|
|
|
1766
|
|
130
|
1767 p = u->pipe;
|
|
28
|
1768
|
|
|
1769 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1770 p->output_ctx = r;
|
|
|
1771 p->tag = u->output.tag;
|
|
126
|
1772 p->bufs = u->conf->bufs;
|
|
28
|
1773 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1774 p->upstream = u->peer.connection;
|
|
132
|
1775 p->downstream = c;
|
|
28
|
1776 p->pool = r->pool;
|
|
132
|
1777 p->log = c->log;
|
|
126
|
1778
|
|
340
|
1779 p->cacheable = u->cacheable || u->store;
|
|
28
|
1780
|
|
50
|
1781 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1782 if (p->temp_file == NULL) {
|
|
28
|
1783 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1784 return;
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1788 p->temp_file->file.log = c->log;
|
|
28
|
1789 p->temp_file->path = u->conf->temp_path;
|
|
|
1790 p->temp_file->pool = r->pool;
|
|
126
|
1791
|
|
340
|
1792 if (u->cacheable || u->store) {
|
|
28
|
1793 p->temp_file->persistent = 1;
|
|
318
|
1794
|
|
28
|
1795 } else {
|
|
216
|
1796 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1797 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1798 "to a temporary file";
|
|
|
1799 }
|
|
|
1800
|
|
|
1801 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1802 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1803
|
|
50
|
1804 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1805 if (p->preread_bufs == NULL) {
|
|
28
|
1806 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1807 return;
|
|
|
1808 }
|
|
318
|
1809
|
|
130
|
1810 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1811 p->preread_bufs->next = NULL;
|
|
130
|
1812 u->buffer.recycled = 1;
|
|
|
1813
|
|
|
1814 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1815
|
|
340
|
1816 if (u->cacheable) {
|
|
318
|
1817
|
|
28
|
1818 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1819 if (p->buf_to_file == NULL) {
|
|
|
1820 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1821 return;
|
|
|
1822 }
|
|
318
|
1823
|
|
130
|
1824 p->buf_to_file->pos = u->buffer.start;
|
|
|
1825 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1826 p->buf_to_file->temporary = 1;
|
|
|
1827 }
|
|
|
1828
|
|
|
1829 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1830 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1831 p->single_buf = 1;
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1835 p->free_bufs = 1;
|
|
|
1836
|
|
|
1837 /*
|
|
130
|
1838 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1839 * as though these bytes were read
|
|
|
1840 */
|
|
130
|
1841 u->buffer.last = u->buffer.pos;
|
|
28
|
1842
|
|
|
1843 if (u->conf->cyclic_temp_file) {
|
|
|
1844
|
|
|
1845 /*
|
|
|
1846 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1847 * because the writing a new data may interfere with sendfile()
|
|
|
1848 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1849 */
|
|
|
1850
|
|
|
1851 p->cyclic_temp_file = 1;
|
|
132
|
1852 c->sendfile = 0;
|
|
28
|
1853
|
|
|
1854 } else {
|
|
|
1855 p->cyclic_temp_file = 0;
|
|
|
1856 }
|
|
|
1857
|
|
|
1858 p->read_timeout = u->conf->read_timeout;
|
|
|
1859 p->send_timeout = clcf->send_timeout;
|
|
|
1860 p->send_lowat = clcf->send_lowat;
|
|
|
1861
|
|
428
|
1862 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
1863 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1864
|
|
430
|
1865 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
1866 }
|
|
|
1867
|
|
|
1868
|
|
36
|
1869 static void
|
|
130
|
1870 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1871 {
|
|
428
|
1872 ngx_event_t *wev;
|
|
|
1873 ngx_connection_t *c;
|
|
|
1874 ngx_http_upstream_t *u;
|
|
|
1875
|
|
|
1876 c = r->connection;
|
|
|
1877 u = r->upstream;
|
|
|
1878 wev = c->write;
|
|
|
1879
|
|
|
1880 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1881 "http upstream process non buffered downstream");
|
|
|
1882
|
|
|
1883 c->log->action = "sending to client";
|
|
|
1884
|
|
|
1885 if (wev->timedout) {
|
|
|
1886 c->timedout = 1;
|
|
|
1887 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1888 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1889 return;
|
|
|
1890 }
|
|
|
1891
|
|
|
1892 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
1893 }
|
|
|
1894
|
|
|
1895
|
|
|
1896 static void
|
|
430
|
1897 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
1898 ngx_http_upstream_t *u)
|
|
428
|
1899 {
|
|
430
|
1900 ngx_connection_t *c;
|
|
|
1901
|
|
|
1902 c = u->peer.connection;
|
|
428
|
1903
|
|
|
1904 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1905 "http upstream process non buffered upstream");
|
|
|
1906
|
|
|
1907 c->log->action = "reading upstream";
|
|
|
1908
|
|
430
|
1909 if (c->read->timedout) {
|
|
428
|
1910 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1911 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1912 return;
|
|
|
1913 }
|
|
|
1914
|
|
|
1915 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
1916 }
|
|
|
1917
|
|
|
1918
|
|
|
1919 static void
|
|
|
1920 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
1921 ngx_uint_t do_write)
|
|
130
|
1922 {
|
|
|
1923 size_t size;
|
|
|
1924 ssize_t n;
|
|
|
1925 ngx_buf_t *b;
|
|
132
|
1926 ngx_int_t rc;
|
|
428
|
1927 ngx_connection_t *downstream, *upstream;
|
|
130
|
1928 ngx_http_upstream_t *u;
|
|
|
1929 ngx_http_core_loc_conf_t *clcf;
|
|
|
1930
|
|
244
|
1931 u = r->upstream;
|
|
260
|
1932 downstream = r->connection;
|
|
|
1933 upstream = u->peer.connection;
|
|
130
|
1934
|
|
|
1935 b = &u->buffer;
|
|
|
1936
|
|
428
|
1937 do_write = do_write || u->length == 0;
|
|
130
|
1938
|
|
|
1939 for ( ;; ) {
|
|
|
1940
|
|
|
1941 if (do_write) {
|
|
|
1942
|
|
|
1943 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1944 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1945
|
|
260
|
1946 if (downstream->destroyed) {
|
|
132
|
1947 return;
|
|
|
1948 }
|
|
|
1949
|
|
|
1950 if (rc == NGX_ERROR) {
|
|
130
|
1951 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1952 return;
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1956 &u->out_bufs, u->output.tag);
|
|
|
1957 }
|
|
|
1958
|
|
|
1959 if (u->busy_bufs == NULL) {
|
|
|
1960
|
|
|
1961 if (u->length == 0
|
|
260
|
1962 || upstream->read->eof
|
|
|
1963 || upstream->read->error)
|
|
130
|
1964 {
|
|
|
1965 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1966 return;
|
|
|
1967 }
|
|
|
1968
|
|
|
1969 b->pos = b->start;
|
|
|
1970 b->last = b->start;
|
|
|
1971 }
|
|
|
1972 }
|
|
|
1973
|
|
|
1974 size = b->end - b->last;
|
|
|
1975
|
|
|
1976 if (size > u->length) {
|
|
|
1977 size = u->length;
|
|
|
1978 }
|
|
|
1979
|
|
260
|
1980 if (size && upstream->read->ready) {
|
|
|
1981
|
|
|
1982 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1983
|
|
|
1984 if (n == NGX_AGAIN) {
|
|
|
1985 break;
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 if (n > 0) {
|
|
430
|
1989 u->state->response_length += n;
|
|
|
1990
|
|
130
|
1991 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1992 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1993 return;
|
|
|
1994 }
|
|
|
1995 }
|
|
|
1996
|
|
|
1997 do_write = 1;
|
|
|
1998
|
|
|
1999 continue;
|
|
|
2000 }
|
|
|
2001
|
|
|
2002 break;
|
|
|
2003 }
|
|
|
2004
|
|
428
|
2005 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2006
|
|
260
|
2007 if (downstream->data == r) {
|
|
|
2008 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
2009 != NGX_OK)
|
|
132
|
2010 {
|
|
|
2011 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2012 return;
|
|
|
2013 }
|
|
130
|
2014 }
|
|
|
2015
|
|
276
|
2016 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2017 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2018
|
|
|
2019 } else if (downstream->write->timer_set) {
|
|
|
2020 ngx_del_timer(downstream->write);
|
|
130
|
2021 }
|
|
|
2022
|
|
426
|
2023 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2024 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2025 return;
|
|
|
2026 }
|
|
|
2027
|
|
276
|
2028 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2029 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2030
|
|
|
2031 } else if (upstream->read->timer_set) {
|
|
|
2032 ngx_del_timer(upstream->read);
|
|
130
|
2033 }
|
|
|
2034 }
|
|
|
2035
|
|
|
2036
|
|
|
2037 static ngx_int_t
|
|
|
2038 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2039 {
|
|
|
2040 return NGX_OK;
|
|
|
2041 }
|
|
|
2042
|
|
|
2043
|
|
|
2044 static ngx_int_t
|
|
|
2045 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2046 {
|
|
|
2047 ngx_http_request_t *r = data;
|
|
|
2048
|
|
|
2049 ngx_buf_t *b;
|
|
|
2050 ngx_chain_t *cl, **ll;
|
|
|
2051 ngx_http_upstream_t *u;
|
|
|
2052
|
|
|
2053 u = r->upstream;
|
|
|
2054
|
|
|
2055 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2056 ll = &cl->next;
|
|
|
2057 }
|
|
|
2058
|
|
|
2059 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2060 if (cl == NULL) {
|
|
|
2061 return NGX_ERROR;
|
|
|
2062 }
|
|
|
2063
|
|
|
2064 *ll = cl;
|
|
|
2065
|
|
|
2066 cl->buf->flush = 1;
|
|
|
2067 cl->buf->memory = 1;
|
|
|
2068
|
|
|
2069 b = &u->buffer;
|
|
|
2070
|
|
|
2071 cl->buf->pos = b->last;
|
|
|
2072 b->last += bytes;
|
|
|
2073 cl->buf->last = b->last;
|
|
366
|
2074 cl->buf->tag = u->output.tag;
|
|
130
|
2075
|
|
|
2076 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2077 return NGX_OK;
|
|
|
2078 }
|
|
|
2079
|
|
|
2080 u->length -= bytes;
|
|
|
2081
|
|
|
2082 return NGX_OK;
|
|
|
2083 }
|
|
|
2084
|
|
|
2085
|
|
|
2086 static void
|
|
58
|
2087 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2088 {
|
|
428
|
2089 ngx_event_t *wev;
|
|
|
2090 ngx_connection_t *c;
|
|
58
|
2091 ngx_event_pipe_t *p;
|
|
28
|
2092 ngx_http_upstream_t *u;
|
|
|
2093
|
|
428
|
2094 c = r->connection;
|
|
28
|
2095 u = r->upstream;
|
|
130
|
2096 p = u->pipe;
|
|
428
|
2097 wev = c->write;
|
|
|
2098
|
|
|
2099 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2100 "http upstream process downstream");
|
|
|
2101
|
|
|
2102 c->log->action = "sending to client";
|
|
|
2103
|
|
|
2104 if (wev->timedout) {
|
|
|
2105
|
|
|
2106 if (wev->delayed) {
|
|
|
2107
|
|
|
2108 wev->timedout = 0;
|
|
|
2109 wev->delayed = 0;
|
|
|
2110
|
|
|
2111 if (!wev->ready) {
|
|
|
2112 ngx_add_timer(wev, p->send_timeout);
|
|
|
2113
|
|
|
2114 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2115 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2116 }
|
|
|
2117
|
|
|
2118 return;
|
|
|
2119 }
|
|
|
2120
|
|
|
2121 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2122
|
|
|
2123 if (c->destroyed) {
|
|
76
|
2124 return;
|
|
|
2125 }
|
|
|
2126
|
|
428
|
2127 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2128 return;
|
|
76
|
2129 }
|
|
28
|
2130
|
|
|
2131 } else {
|
|
428
|
2132 p->downstream_error = 1;
|
|
|
2133 c->timedout = 1;
|
|
|
2134 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2135 }
|
|
|
2136
|
|
|
2137 } else {
|
|
428
|
2138
|
|
|
2139 if (wev->delayed) {
|
|
|
2140
|
|
76
|
2141 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2142 "http downstream delayed");
|
|
|
2143
|
|
428
|
2144 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2145 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2146 }
|
|
|
2147
|
|
|
2148 return;
|
|
|
2149 }
|
|
|
2150
|
|
428
|
2151 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
|
2152
|
|
|
2153 if (c->destroyed) {
|
|
132
|
2154 return;
|
|
|
2155 }
|
|
|
2156
|
|
28
|
2157 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2158 return;
|
|
|
2159 }
|
|
|
2160 }
|
|
126
|
2161
|
|
428
|
2162 ngx_http_upstream_process_request(r);
|
|
|
2163 }
|
|
|
2164
|
|
|
2165
|
|
|
2166 static void
|
|
430
|
2167 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2168 ngx_http_upstream_t *u)
|
|
428
|
2169 {
|
|
430
|
2170 ngx_connection_t *c;
|
|
|
2171
|
|
|
2172 c = u->peer.connection;
|
|
428
|
2173
|
|
|
2174 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2175 "http upstream process upstream");
|
|
|
2176
|
|
|
2177 c->log->action = "reading upstream";
|
|
|
2178
|
|
430
|
2179 if (c->read->timedout) {
|
|
|
2180 u->pipe->upstream_error = 1;
|
|
428
|
2181 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2182
|
|
|
2183 } else {
|
|
|
2184 c = r->connection;
|
|
|
2185
|
|
430
|
2186 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
428
|
2187
|
|
|
2188 if (c->destroyed) {
|
|
|
2189 return;
|
|
|
2190 }
|
|
|
2191
|
|
|
2192 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2193 return;
|
|
|
2194 }
|
|
|
2195 }
|
|
|
2196
|
|
|
2197 ngx_http_upstream_process_request(r);
|
|
|
2198 }
|
|
|
2199
|
|
|
2200
|
|
|
2201 static void
|
|
|
2202 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2203 {
|
|
438
|
2204 ngx_uint_t del;
|
|
428
|
2205 ngx_temp_file_t *tf;
|
|
|
2206 ngx_event_pipe_t *p;
|
|
|
2207 ngx_http_upstream_t *u;
|
|
|
2208
|
|
|
2209 u = r->upstream;
|
|
|
2210 p = u->pipe;
|
|
|
2211
|
|
28
|
2212 if (u->peer.connection) {
|
|
|
2213
|
|
318
|
2214 if (u->store) {
|
|
|
2215
|
|
438
|
2216 del = p->upstream_error;
|
|
|
2217
|
|
364
|
2218 tf = u->pipe->temp_file;
|
|
|
2219
|
|
440
|
2220 if (p->upstream_eof || p->upstream_done) {
|
|
438
|
2221
|
|
|
2222 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2223 && (u->headers_in.content_length_n == -1
|
|
|
2224 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2225 {
|
|
|
2226 ngx_http_upstream_store(r, u);
|
|
|
2227
|
|
|
2228 } else {
|
|
|
2229 del = 1;
|
|
|
2230 }
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
2234
|
|
364
|
2235 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2236
|
|
318
|
2237 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2238 ngx_delete_file_n " \"%s\" failed",
|
|
|
2239 u->pipe->temp_file->file.name.data);
|
|
|
2240 }
|
|
|
2241 }
|
|
|
2242 }
|
|
|
2243
|
|
28
|
2244 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2245
|
|
340
|
2246 if (p->upstream_done && u->cacheable) {
|
|
28
|
2247 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2248 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2249 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2250 return;
|
|
|
2251 }
|
|
|
2252
|
|
340
|
2253 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2254
|
|
|
2255 /* TODO: check length & update cache */
|
|
|
2256
|
|
|
2257 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2258 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2259 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2260 return;
|
|
|
2261 }
|
|
|
2262 }
|
|
|
2263
|
|
|
2264 #endif
|
|
|
2265
|
|
|
2266 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2267 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2268 "http upstream exit: %p", p->out);
|
|
28
|
2269 #if 0
|
|
|
2270 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2271 #endif
|
|
|
2272 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2273 return;
|
|
|
2274 }
|
|
|
2275 }
|
|
|
2276
|
|
|
2277 if (p->downstream_error) {
|
|
428
|
2278 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2279 "http upstream downstream error");
|
|
28
|
2280
|
|
340
|
2281 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2282 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2283 }
|
|
|
2284 }
|
|
|
2285 }
|
|
|
2286
|
|
|
2287
|
|
36
|
2288 static void
|
|
318
|
2289 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2290 {
|
|
370
|
2291 size_t root;
|
|
|
2292 time_t lm;
|
|
|
2293 ngx_str_t path;
|
|
|
2294 ngx_temp_file_t *tf;
|
|
|
2295 ngx_ext_rename_file_t ext;
|
|
318
|
2296
|
|
358
|
2297 tf = u->pipe->temp_file;
|
|
|
2298
|
|
|
2299 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2300
|
|
|
2301 /* create file for empty 200 response */
|
|
|
2302
|
|
|
2303 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2304 if (tf == NULL) {
|
|
|
2305 return;
|
|
|
2306 }
|
|
|
2307
|
|
|
2308 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2309 tf->file.log = r->connection->log;
|
|
|
2310 tf->path = u->conf->temp_path;
|
|
|
2311 tf->pool = r->pool;
|
|
|
2312 tf->persistent = 1;
|
|
|
2313
|
|
|
2314 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2315 tf->persistent, tf->clean, tf->access)
|
|
|
2316 != NGX_OK)
|
|
|
2317 {
|
|
|
2318 return;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 u->pipe->temp_file = tf;
|
|
|
2322 }
|
|
|
2323
|
|
370
|
2324 ext.access = u->conf->store_access;
|
|
430
|
2325 ext.path_access = u->conf->store_access;
|
|
370
|
2326 ext.time = -1;
|
|
|
2327 ext.create_path = 1;
|
|
|
2328 ext.delete_file = 1;
|
|
430
|
2329 ext.log_rename_error = 1;
|
|
370
|
2330 ext.log = r->connection->log;
|
|
318
|
2331
|
|
356
|
2332 if (u->headers_in.last_modified) {
|
|
|
2333
|
|
370
|
2334 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2335 u->headers_in.last_modified->value.len);
|
|
318
|
2336
|
|
|
2337 if (lm != NGX_ERROR) {
|
|
370
|
2338 ext.time = lm;
|
|
|
2339 ext.fd = tf->file.fd;
|
|
318
|
2340 }
|
|
|
2341 }
|
|
|
2342
|
|
320
|
2343 if (u->conf->store_lengths == NULL) {
|
|
|
2344
|
|
|
2345 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2346
|
|
|
2347 } else {
|
|
|
2348 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2349 u->conf->store_values->elts)
|
|
|
2350 == NULL)
|
|
|
2351 {
|
|
|
2352 return;
|
|
|
2353 }
|
|
|
2354 }
|
|
318
|
2355
|
|
|
2356 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2357 "upstream stores \"%s\" to \"%s\"",
|
|
|
2358 tf->file.name.data, path.data);
|
|
|
2359
|
|
|
2360 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2361 }
|
|
|
2362
|
|
|
2363
|
|
|
2364 static void
|
|
430
|
2365 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2366 {
|
|
430
|
2367 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2368 "http upstream dummy handler");
|
|
|
2369 }
|
|
|
2370
|
|
|
2371
|
|
36
|
2372 static void
|
|
|
2373 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2374 ngx_uint_t ft_type)
|
|
28
|
2375 {
|
|
260
|
2376 ngx_uint_t status, state;
|
|
28
|
2377
|
|
|
2378 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2379 "http next upstream, %xi", ft_type);
|
|
28
|
2380
|
|
|
2381 #if 0
|
|
|
2382 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2383 #endif
|
|
|
2384
|
|
74
|
2385 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2386 state = NGX_PEER_NEXT;
|
|
74
|
2387 } else {
|
|
260
|
2388 state = NGX_PEER_FAILED;
|
|
28
|
2389 }
|
|
74
|
2390
|
|
326
|
2391 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2392 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2393 }
|
|
74
|
2394
|
|
28
|
2395 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2396 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2397 "upstream timed out");
|
|
|
2398 }
|
|
126
|
2399
|
|
28
|
2400 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2401 status = 0;
|
|
|
2402
|
|
|
2403 } else {
|
|
|
2404 switch(ft_type) {
|
|
|
2405
|
|
|
2406 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2407 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2408 break;
|
|
|
2409
|
|
|
2410 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2411 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2412 break;
|
|
|
2413
|
|
|
2414 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2415 status = NGX_HTTP_NOT_FOUND;
|
|
|
2416 break;
|
|
|
2417
|
|
|
2418 /*
|
|
|
2419 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2420 * never reach here
|
|
|
2421 */
|
|
|
2422
|
|
|
2423 default:
|
|
|
2424 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2425 }
|
|
|
2426 }
|
|
|
2427
|
|
132
|
2428 if (r->connection->error) {
|
|
28
|
2429 ngx_http_upstream_finalize_request(r, u,
|
|
|
2430 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2431 return;
|
|
|
2432 }
|
|
|
2433
|
|
|
2434 if (status) {
|
|
|
2435 u->state->status = status;
|
|
|
2436
|
|
74
|
2437 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2438
|
|
|
2439 #if (NGX_HTTP_CACHE)
|
|
|
2440
|
|
|
2441 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2442 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2443 ngx_http_send_cached_response(r));
|
|
28
|
2444 return;
|
|
|
2445 }
|
|
|
2446
|
|
|
2447 #endif
|
|
|
2448
|
|
|
2449 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2450 return;
|
|
|
2451 }
|
|
|
2452 }
|
|
|
2453
|
|
|
2454 if (u->peer.connection) {
|
|
|
2455 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2456 "close http upstream connection: %d",
|
|
|
2457 u->peer.connection->fd);
|
|
126
|
2458 #if (NGX_HTTP_SSL)
|
|
260
|
2459
|
|
126
|
2460 if (u->peer.connection->ssl) {
|
|
260
|
2461 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2462 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2463
|
|
|
2464 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2465 }
|
|
|
2466 #endif
|
|
260
|
2467
|
|
28
|
2468 ngx_close_connection(u->peer.connection);
|
|
|
2469 }
|
|
|
2470
|
|
|
2471 #if 0
|
|
|
2472 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2473 ngx_http_upstream_busy_lock(p);
|
|
|
2474 return;
|
|
|
2475 }
|
|
|
2476 #endif
|
|
|
2477
|
|
|
2478 ngx_http_upstream_connect(r, u);
|
|
|
2479 }
|
|
|
2480
|
|
|
2481
|
|
36
|
2482 static void
|
|
118
|
2483 ngx_http_upstream_cleanup(void *data)
|
|
|
2484 {
|
|
|
2485 ngx_http_request_t *r = data;
|
|
|
2486
|
|
356
|
2487 ngx_http_upstream_t *u;
|
|
|
2488
|
|
118
|
2489 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2490 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2491
|
|
356
|
2492 u = r->upstream;
|
|
|
2493
|
|
|
2494 if (u->resolved && u->resolved->ctx) {
|
|
|
2495 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2496 }
|
|
|
2497
|
|
356
|
2498 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2499 }
|
|
|
2500
|
|
|
2501
|
|
|
2502 static void
|
|
36
|
2503 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2504 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2505 {
|
|
262
|
2506 ngx_time_t *tp;
|
|
112
|
2507
|
|
32
|
2508 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2509 "finalize http upstream request: %i", rc);
|
|
28
|
2510
|
|
432
|
2511 if (u->cleanup) {
|
|
|
2512 *u->cleanup = NULL;
|
|
|
2513 }
|
|
118
|
2514
|
|
348
|
2515 if (u->state && u->state->response_sec) {
|
|
112
|
2516 tp = ngx_timeofday();
|
|
262
|
2517 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2518 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
430
|
2519
|
|
|
2520 if (u->pipe) {
|
|
|
2521 u->state->response_length = u->pipe->read_length;
|
|
|
2522 }
|
|
112
|
2523 }
|
|
|
2524
|
|
28
|
2525 u->finalize_request(r, rc);
|
|
|
2526
|
|
348
|
2527 if (u->peer.free) {
|
|
|
2528 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2529 }
|
|
260
|
2530
|
|
28
|
2531 if (u->peer.connection) {
|
|
260
|
2532
|
|
126
|
2533 #if (NGX_HTTP_SSL)
|
|
|
2534
|
|
|
2535 /* TODO: do not shutdown persistent connection */
|
|
|
2536
|
|
|
2537 if (u->peer.connection->ssl) {
|
|
260
|
2538
|
|
|
2539 /*
|
|
|
2540 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2541 * and do not wait its "close notify" shutdown alert.
|
|
|
2542 * It is acceptable according to the TLS standard.
|
|
|
2543 */
|
|
|
2544
|
|
|
2545 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2546
|
|
|
2547 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2548 }
|
|
|
2549 #endif
|
|
260
|
2550
|
|
|
2551 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2552 "close http upstream connection: %d",
|
|
|
2553 u->peer.connection->fd);
|
|
|
2554
|
|
28
|
2555 ngx_close_connection(u->peer.connection);
|
|
|
2556 }
|
|
|
2557
|
|
32
|
2558 u->peer.connection = NULL;
|
|
|
2559
|
|
112
|
2560 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2561 {
|
|
|
2562 rc = 0;
|
|
|
2563 }
|
|
|
2564
|
|
130
|
2565 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2566 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2567 "http upstream temp fd: %d",
|
|
130
|
2568 u->pipe->temp_file->file.fd);
|
|
28
|
2569 }
|
|
|
2570
|
|
|
2571 #if 0
|
|
|
2572 if (u->cache) {
|
|
|
2573 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2574 "http upstream cache fd: %d",
|
|
28
|
2575 u->cache->ctx.file.fd);
|
|
|
2576 }
|
|
|
2577 #endif
|
|
|
2578
|
|
64
|
2579 if (rc == NGX_DECLINED) {
|
|
|
2580 return;
|
|
|
2581 }
|
|
|
2582
|
|
32
|
2583 r->connection->log->action = "sending to client";
|
|
|
2584
|
|
426
|
2585 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2586 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2587 }
|
|
|
2588
|
|
|
2589 ngx_http_finalize_request(r, rc);
|
|
|
2590 }
|
|
|
2591
|
|
|
2592
|
|
58
|
2593 static ngx_int_t
|
|
|
2594 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2595 ngx_uint_t offset)
|
|
126
|
2596 {
|
|
58
|
2597 ngx_table_elt_t **ph;
|
|
126
|
2598
|
|
58
|
2599 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2600
|
|
|
2601 if (*ph == NULL) {
|
|
|
2602 *ph = h;
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 return NGX_OK;
|
|
|
2606 }
|
|
|
2607
|
|
|
2608
|
|
|
2609 static ngx_int_t
|
|
|
2610 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2611 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2612 {
|
|
|
2613 ngx_array_t *pa;
|
|
|
2614 ngx_table_elt_t **ph;
|
|
|
2615
|
|
|
2616 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2617
|
|
|
2618 if (pa->elts == NULL) {
|
|
|
2619 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2620 {
|
|
|
2621 return NGX_ERROR;
|
|
|
2622 }
|
|
|
2623 }
|
|
|
2624
|
|
|
2625 ph = ngx_array_push(pa);
|
|
|
2626 if (ph == NULL) {
|
|
|
2627 return NGX_ERROR;
|
|
|
2628 }
|
|
|
2629
|
|
|
2630 *ph = h;
|
|
|
2631
|
|
|
2632 return NGX_OK;
|
|
|
2633 }
|
|
|
2634
|
|
|
2635
|
|
|
2636 static ngx_int_t
|
|
|
2637 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2638 ngx_uint_t offset)
|
|
|
2639 {
|
|
|
2640 return NGX_OK;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643
|
|
|
2644 static ngx_int_t
|
|
76
|
2645 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2646 ngx_uint_t offset)
|
|
126
|
2647 {
|
|
76
|
2648 ngx_int_t n;
|
|
|
2649
|
|
|
2650 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2651
|
|
|
2652 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2653
|
|
|
2654 if (n != NGX_ERROR) {
|
|
|
2655 r->limit_rate = (size_t) n;
|
|
|
2656 }
|
|
|
2657
|
|
|
2658 return NGX_OK;
|
|
|
2659 }
|
|
|
2660
|
|
|
2661
|
|
|
2662 static ngx_int_t
|
|
198
|
2663 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2664 ngx_uint_t offset)
|
|
|
2665 {
|
|
|
2666 u_char c0, c1, c2;
|
|
|
2667
|
|
|
2668 if (r->upstream->conf->change_buffering) {
|
|
|
2669
|
|
|
2670 if (h->value.len == 2) {
|
|
|
2671 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2672 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2673
|
|
|
2674 if (c0 == 'n' && c1 == 'o') {
|
|
|
2675 r->upstream->buffering = 0;
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 } else if (h->value.len == 3) {
|
|
|
2679 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2680 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2681 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2682
|
|
|
2683 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2684 r->upstream->buffering = 1;
|
|
|
2685 }
|
|
|
2686 }
|
|
|
2687 }
|
|
|
2688
|
|
|
2689 return NGX_OK;
|
|
|
2690 }
|
|
|
2691
|
|
|
2692
|
|
|
2693 static ngx_int_t
|
|
206
|
2694 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2695 ngx_uint_t offset)
|
|
|
2696 {
|
|
|
2697 r->headers_out.override_charset = &h->value;
|
|
|
2698
|
|
|
2699 return NGX_OK;
|
|
|
2700 }
|
|
|
2701
|
|
|
2702
|
|
|
2703 static ngx_int_t
|
|
58
|
2704 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2705 ngx_uint_t offset)
|
|
|
2706 {
|
|
122
|
2707 ngx_table_elt_t *ho, **ph;
|
|
58
|
2708
|
|
|
2709 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2710 if (ho == NULL) {
|
|
|
2711 return NGX_ERROR;
|
|
|
2712 }
|
|
|
2713
|
|
|
2714 *ho = *h;
|
|
|
2715
|
|
122
|
2716 if (offset) {
|
|
|
2717 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2718 *ph = ho;
|
|
|
2719 }
|
|
|
2720
|
|
58
|
2721 return NGX_OK;
|
|
|
2722 }
|
|
|
2723
|
|
|
2724
|
|
|
2725 static ngx_int_t
|
|
|
2726 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2727 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2728 {
|
|
|
2729 ngx_array_t *pa;
|
|
|
2730 ngx_table_elt_t *ho, **ph;
|
|
|
2731
|
|
|
2732 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2733
|
|
|
2734 if (pa->elts == NULL) {
|
|
|
2735 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2736 {
|
|
|
2737 return NGX_ERROR;
|
|
|
2738 }
|
|
|
2739 }
|
|
|
2740
|
|
|
2741 ph = ngx_array_push(pa);
|
|
|
2742 if (ph == NULL) {
|
|
|
2743 return NGX_ERROR;
|
|
|
2744 }
|
|
|
2745
|
|
|
2746 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2747 if (ho == NULL) {
|
|
|
2748 return NGX_ERROR;
|
|
|
2749 }
|
|
|
2750
|
|
|
2751 *ho = *h;
|
|
|
2752 *ph = ho;
|
|
|
2753
|
|
|
2754 return NGX_OK;
|
|
|
2755 }
|
|
|
2756
|
|
|
2757
|
|
|
2758 static ngx_int_t
|
|
|
2759 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2760 ngx_uint_t offset)
|
|
|
2761 {
|
|
206
|
2762 u_char *p, *last;
|
|
|
2763
|
|
|
2764 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2765 r->headers_out.content_type = h->value;
|
|
|
2766
|
|
206
|
2767 for (p = h->value.data; *p; p++) {
|
|
|
2768
|
|
|
2769 if (*p != ';') {
|
|
|
2770 continue;
|
|
|
2771 }
|
|
|
2772
|
|
|
2773 last = p;
|
|
|
2774
|
|
|
2775 while (*++p == ' ') { /* void */ }
|
|
|
2776
|
|
372
|
2777 if (*p == '\0') {
|
|
|
2778 return NGX_OK;
|
|
|
2779 }
|
|
|
2780
|
|
286
|
2781 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2782 continue;
|
|
|
2783 }
|
|
|
2784
|
|
|
2785 p += 8;
|
|
|
2786
|
|
|
2787 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2788
|
|
410
|
2789 if (*p == '"') {
|
|
|
2790 p++;
|
|
|
2791 }
|
|
|
2792
|
|
|
2793 last = h->value.data + h->value.len;
|
|
|
2794
|
|
|
2795 if (*(last - 1) == '"') {
|
|
|
2796 last--;
|
|
|
2797 }
|
|
|
2798
|
|
|
2799 r->headers_out.charset.len = last - p;
|
|
206
|
2800 r->headers_out.charset.data = p;
|
|
292
|
2801
|
|
|
2802 return NGX_OK;
|
|
206
|
2803 }
|
|
|
2804
|
|
58
|
2805 return NGX_OK;
|
|
|
2806 }
|
|
|
2807
|
|
|
2808
|
|
|
2809 static ngx_int_t
|
|
|
2810 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2811 ngx_uint_t offset)
|
|
|
2812 {
|
|
|
2813 ngx_table_elt_t *ho;
|
|
|
2814
|
|
|
2815 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2816 if (ho == NULL) {
|
|
|
2817 return NGX_ERROR;
|
|
|
2818 }
|
|
|
2819
|
|
|
2820 *ho = *h;
|
|
|
2821
|
|
|
2822 r->headers_out.content_length = ho;
|
|
|
2823 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2824
|
|
|
2825 return NGX_OK;
|
|
|
2826 }
|
|
|
2827
|
|
|
2828
|
|
|
2829 static ngx_int_t
|
|
|
2830 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2831 ngx_uint_t offset)
|
|
|
2832 {
|
|
|
2833 ngx_int_t rc;
|
|
|
2834 ngx_table_elt_t *ho;
|
|
|
2835
|
|
|
2836 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2837 if (ho == NULL) {
|
|
|
2838 return NGX_ERROR;
|
|
|
2839 }
|
|
|
2840
|
|
|
2841 *ho = *h;
|
|
|
2842
|
|
|
2843 if (r->upstream->rewrite_redirect) {
|
|
|
2844 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2845
|
|
78
|
2846 if (rc == NGX_DECLINED) {
|
|
|
2847 return NGX_OK;
|
|
|
2848 }
|
|
|
2849
|
|
58
|
2850 if (rc == NGX_OK) {
|
|
|
2851 r->headers_out.location = ho;
|
|
|
2852
|
|
|
2853 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2854 "rewritten location: \"%V\"", &ho->value);
|
|
|
2855 }
|
|
|
2856
|
|
|
2857 return rc;
|
|
|
2858 }
|
|
|
2859
|
|
348
|
2860 if (ho->value.data[0] != '/') {
|
|
|
2861 r->headers_out.location = ho;
|
|
|
2862 }
|
|
|
2863
|
|
58
|
2864 /*
|
|
|
2865 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2866 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2867 */
|
|
|
2868
|
|
|
2869 return NGX_OK;
|
|
|
2870 }
|
|
|
2871
|
|
|
2872
|
|
|
2873 static ngx_int_t
|
|
|
2874 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2875 ngx_uint_t offset)
|
|
|
2876 {
|
|
|
2877 u_char *p;
|
|
|
2878 ngx_int_t rc;
|
|
|
2879 ngx_table_elt_t *ho;
|
|
|
2880
|
|
|
2881 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2882 if (ho == NULL) {
|
|
|
2883 return NGX_ERROR;
|
|
|
2884 }
|
|
|
2885
|
|
|
2886 *ho = *h;
|
|
|
2887
|
|
|
2888 if (r->upstream->rewrite_redirect) {
|
|
|
2889
|
|
340
|
2890 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2891
|
|
|
2892 if (p) {
|
|
|
2893 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2894
|
|
|
2895 } else {
|
|
|
2896 return NGX_OK;
|
|
|
2897 }
|
|
|
2898
|
|
78
|
2899 if (rc == NGX_DECLINED) {
|
|
|
2900 return NGX_OK;
|
|
|
2901 }
|
|
|
2902
|
|
58
|
2903 if (rc == NGX_OK) {
|
|
348
|
2904 r->headers_out.refresh = ho;
|
|
|
2905
|
|
58
|
2906 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2907 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2908 }
|
|
|
2909
|
|
|
2910 return rc;
|
|
|
2911 }
|
|
|
2912
|
|
348
|
2913 r->headers_out.refresh = ho;
|
|
|
2914
|
|
58
|
2915 return NGX_OK;
|
|
|
2916 }
|
|
|
2917
|
|
|
2918
|
|
|
2919 #if (NGX_HTTP_GZIP)
|
|
|
2920
|
|
|
2921 static ngx_int_t
|
|
|
2922 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2923 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2924 {
|
|
|
2925 ngx_table_elt_t *ho;
|
|
|
2926
|
|
|
2927 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2928 if (ho == NULL) {
|
|
|
2929 return NGX_ERROR;
|
|
|
2930 }
|
|
|
2931
|
|
|
2932 *ho = *h;
|
|
|
2933
|
|
|
2934 r->headers_out.content_encoding = ho;
|
|
|
2935
|
|
|
2936 return NGX_OK;
|
|
|
2937 }
|
|
|
2938
|
|
|
2939 #endif
|
|
|
2940
|
|
|
2941
|
|
36
|
2942 static ngx_int_t
|
|
122
|
2943 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2944 {
|
|
260
|
2945 ngx_http_variable_t *var, *v;
|
|
28
|
2946
|
|
122
|
2947 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2948 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2949 if (var == NULL) {
|
|
|
2950 return NGX_ERROR;
|
|
|
2951 }
|
|
|
2952
|
|
186
|
2953 var->get_handler = v->get_handler;
|
|
122
|
2954 var->data = v->data;
|
|
|
2955 }
|
|
|
2956
|
|
28
|
2957 return NGX_OK;
|
|
|
2958 }
|
|
58
|
2959
|
|
|
2960
|
|
122
|
2961 static ngx_int_t
|
|
298
|
2962 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2963 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2964 {
|
|
|
2965 u_char *p;
|
|
|
2966 size_t len;
|
|
|
2967 ngx_uint_t i;
|
|
|
2968 ngx_http_upstream_state_t *state;
|
|
|
2969
|
|
|
2970 v->valid = 1;
|
|
340
|
2971 v->no_cacheable = 0;
|
|
298
|
2972 v->not_found = 0;
|
|
|
2973
|
|
|
2974 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2975 v->not_found = 1;
|
|
|
2976 return NGX_OK;
|
|
|
2977 }
|
|
|
2978
|
|
|
2979 len = 0;
|
|
|
2980 state = r->upstream_states->elts;
|
|
|
2981
|
|
|
2982 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2983 if (state[i].peer) {
|
|
|
2984 len += state[i].peer->len + 2;
|
|
|
2985
|
|
|
2986 } else {
|
|
|
2987 len += 3;
|
|
|
2988 }
|
|
|
2989 }
|
|
|
2990
|
|
382
|
2991 p = ngx_pnalloc(r->pool, len);
|
|
298
|
2992 if (p == NULL) {
|
|
|
2993 return NGX_ERROR;
|
|
|
2994 }
|
|
|
2995
|
|
|
2996 v->data = p;
|
|
|
2997
|
|
|
2998 i = 0;
|
|
|
2999
|
|
|
3000 for ( ;; ) {
|
|
|
3001 if (state[i].peer) {
|
|
|
3002 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3003 }
|
|
|
3004
|
|
|
3005 if (++i == r->upstream_states->nelts) {
|
|
|
3006 break;
|
|
|
3007 }
|
|
|
3008
|
|
|
3009 if (state[i].peer) {
|
|
|
3010 *p++ = ',';
|
|
|
3011 *p++ = ' ';
|
|
|
3012
|
|
|
3013 } else {
|
|
|
3014 *p++ = ' ';
|
|
|
3015 *p++ = ':';
|
|
|
3016 *p++ = ' ';
|
|
|
3017
|
|
|
3018 if (++i == r->upstream_states->nelts) {
|
|
|
3019 break;
|
|
|
3020 }
|
|
|
3021
|
|
|
3022 continue;
|
|
|
3023 }
|
|
|
3024 }
|
|
|
3025
|
|
|
3026 v->len = p - v->data;
|
|
|
3027
|
|
|
3028 return NGX_OK;
|
|
|
3029 }
|
|
|
3030
|
|
|
3031
|
|
|
3032 static ngx_int_t
|
|
122
|
3033 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3034 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3035 {
|
|
|
3036 u_char *p;
|
|
|
3037 size_t len;
|
|
|
3038 ngx_uint_t i;
|
|
|
3039 ngx_http_upstream_state_t *state;
|
|
|
3040
|
|
|
3041 v->valid = 1;
|
|
340
|
3042 v->no_cacheable = 0;
|
|
122
|
3043 v->not_found = 0;
|
|
|
3044
|
|
296
|
3045 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3046 v->not_found = 1;
|
|
|
3047 return NGX_OK;
|
|
|
3048 }
|
|
|
3049
|
|
296
|
3050 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3051
|
|
382
|
3052 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3053 if (p == NULL) {
|
|
|
3054 return NGX_ERROR;
|
|
|
3055 }
|
|
|
3056
|
|
|
3057 v->data = p;
|
|
|
3058
|
|
|
3059 i = 0;
|
|
296
|
3060 state = r->upstream_states->elts;
|
|
122
|
3061
|
|
|
3062 for ( ;; ) {
|
|
296
|
3063 if (state[i].status) {
|
|
|
3064 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3065
|
|
|
3066 } else {
|
|
296
|
3067 *p++ = '-';
|
|
122
|
3068 }
|
|
|
3069
|
|
296
|
3070 if (++i == r->upstream_states->nelts) {
|
|
122
|
3071 break;
|
|
|
3072 }
|
|
|
3073
|
|
296
|
3074 if (state[i].peer) {
|
|
|
3075 *p++ = ',';
|
|
|
3076 *p++ = ' ';
|
|
|
3077
|
|
|
3078 } else {
|
|
|
3079 *p++ = ' ';
|
|
|
3080 *p++ = ':';
|
|
|
3081 *p++ = ' ';
|
|
|
3082
|
|
|
3083 if (++i == r->upstream_states->nelts) {
|
|
|
3084 break;
|
|
|
3085 }
|
|
|
3086
|
|
|
3087 continue;
|
|
|
3088 }
|
|
122
|
3089 }
|
|
|
3090
|
|
|
3091 v->len = p - v->data;
|
|
|
3092
|
|
|
3093 return NGX_OK;
|
|
|
3094 }
|
|
|
3095
|
|
|
3096
|
|
|
3097 static ngx_int_t
|
|
|
3098 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3099 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3100 {
|
|
|
3101 u_char *p;
|
|
|
3102 size_t len;
|
|
|
3103 ngx_uint_t i;
|
|
262
|
3104 ngx_msec_int_t ms;
|
|
122
|
3105 ngx_http_upstream_state_t *state;
|
|
|
3106
|
|
|
3107 v->valid = 1;
|
|
340
|
3108 v->no_cacheable = 0;
|
|
122
|
3109 v->not_found = 0;
|
|
|
3110
|
|
296
|
3111 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3112 v->not_found = 1;
|
|
|
3113 return NGX_OK;
|
|
|
3114 }
|
|
|
3115
|
|
296
|
3116 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3117
|
|
382
|
3118 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3119 if (p == NULL) {
|
|
|
3120 return NGX_ERROR;
|
|
|
3121 }
|
|
|
3122
|
|
|
3123 v->data = p;
|
|
|
3124
|
|
|
3125 i = 0;
|
|
296
|
3126 state = r->upstream_states->elts;
|
|
122
|
3127
|
|
|
3128 for ( ;; ) {
|
|
296
|
3129 if (state[i].status) {
|
|
346
|
3130 ms = (ngx_msec_int_t)
|
|
|
3131 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3132 ms = (ms >= 0) ? ms : 0;
|
|
|
3133 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3134
|
|
|
3135 } else {
|
|
|
3136 *p++ = '-';
|
|
122
|
3137 }
|
|
|
3138
|
|
296
|
3139 if (++i == r->upstream_states->nelts) {
|
|
122
|
3140 break;
|
|
|
3141 }
|
|
|
3142
|
|
296
|
3143 if (state[i].peer) {
|
|
|
3144 *p++ = ',';
|
|
|
3145 *p++ = ' ';
|
|
|
3146
|
|
|
3147 } else {
|
|
|
3148 *p++ = ' ';
|
|
|
3149 *p++ = ':';
|
|
|
3150 *p++ = ' ';
|
|
|
3151
|
|
|
3152 if (++i == r->upstream_states->nelts) {
|
|
|
3153 break;
|
|
|
3154 }
|
|
|
3155
|
|
|
3156 continue;
|
|
|
3157 }
|
|
122
|
3158 }
|
|
|
3159
|
|
|
3160 v->len = p - v->data;
|
|
|
3161
|
|
|
3162 return NGX_OK;
|
|
|
3163 }
|
|
|
3164
|
|
|
3165
|
|
430
|
3166 static ngx_int_t
|
|
|
3167 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3168 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3169 {
|
|
|
3170 u_char *p;
|
|
|
3171 size_t len;
|
|
|
3172 ngx_uint_t i;
|
|
|
3173 ngx_http_upstream_state_t *state;
|
|
|
3174
|
|
|
3175 v->valid = 1;
|
|
|
3176 v->no_cacheable = 0;
|
|
|
3177 v->not_found = 0;
|
|
|
3178
|
|
|
3179 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3180 v->not_found = 1;
|
|
|
3181 return NGX_OK;
|
|
|
3182 }
|
|
|
3183
|
|
|
3184 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3185
|
|
|
3186 p = ngx_pnalloc(r->pool, len);
|
|
|
3187 if (p == NULL) {
|
|
|
3188 return NGX_ERROR;
|
|
|
3189 }
|
|
|
3190
|
|
|
3191 v->data = p;
|
|
|
3192
|
|
|
3193 i = 0;
|
|
|
3194 state = r->upstream_states->elts;
|
|
|
3195
|
|
|
3196 for ( ;; ) {
|
|
|
3197 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3198
|
|
|
3199 if (++i == r->upstream_states->nelts) {
|
|
|
3200 break;
|
|
|
3201 }
|
|
|
3202
|
|
|
3203 if (state[i].peer) {
|
|
|
3204 *p++ = ',';
|
|
|
3205 *p++ = ' ';
|
|
|
3206
|
|
|
3207 } else {
|
|
|
3208 *p++ = ' ';
|
|
|
3209 *p++ = ':';
|
|
|
3210 *p++ = ' ';
|
|
|
3211
|
|
|
3212 if (++i == r->upstream_states->nelts) {
|
|
|
3213 break;
|
|
|
3214 }
|
|
|
3215
|
|
|
3216 continue;
|
|
|
3217 }
|
|
|
3218 }
|
|
|
3219
|
|
|
3220 v->len = p - v->data;
|
|
|
3221
|
|
|
3222 return NGX_OK;
|
|
|
3223 }
|
|
|
3224
|
|
|
3225
|
|
296
|
3226 ngx_int_t
|
|
|
3227 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3228 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3229 {
|
|
|
3230 if (r->upstream == NULL) {
|
|
|
3231 v->not_found = 1;
|
|
|
3232 return NGX_OK;
|
|
|
3233 }
|
|
|
3234
|
|
|
3235 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3236 &r->upstream->headers_in.headers.part,
|
|
|
3237 sizeof("upstream_http_") - 1);
|
|
|
3238 }
|
|
|
3239
|
|
|
3240
|
|
200
|
3241 static char *
|
|
|
3242 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3243 {
|
|
260
|
3244 char *rv;
|
|
|
3245 void *mconf;
|
|
|
3246 ngx_str_t *value;
|
|
|
3247 ngx_url_t u;
|
|
|
3248 ngx_uint_t m;
|
|
|
3249 ngx_conf_t pcf;
|
|
|
3250 ngx_http_module_t *module;
|
|
|
3251 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3252 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3253
|
|
|
3254 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3255
|
|
|
3256 value = cf->args->elts;
|
|
|
3257 u.host = value[1];
|
|
|
3258 u.no_resolve = 1;
|
|
|
3259
|
|
|
3260 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3261 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3262 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3263 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3264 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3265 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3266 if (uscf == NULL) {
|
|
|
3267 return NGX_CONF_ERROR;
|
|
|
3268 }
|
|
|
3269
|
|
200
|
3270
|
|
|
3271 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3272 if (ctx == NULL) {
|
|
|
3273 return NGX_CONF_ERROR;
|
|
|
3274 }
|
|
|
3275
|
|
260
|
3276 http_ctx = cf->ctx;
|
|
|
3277 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3278
|
|
|
3279 /* the upstream{}'s srv_conf */
|
|
|
3280
|
|
|
3281 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3282 if (ctx->srv_conf == NULL) {
|
|
|
3283 return NGX_CONF_ERROR;
|
|
|
3284 }
|
|
|
3285
|
|
|
3286 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3287
|
|
260
|
3288 uscf->srv_conf = ctx->srv_conf;
|
|
|
3289
|
|
200
|
3290
|
|
|
3291 /* the upstream{}'s loc_conf */
|
|
|
3292
|
|
|
3293 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3294 if (ctx->loc_conf == NULL) {
|
|
|
3295 return NGX_CONF_ERROR;
|
|
|
3296 }
|
|
|
3297
|
|
|
3298 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3299 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3300 continue;
|
|
|
3301 }
|
|
|
3302
|
|
|
3303 module = ngx_modules[m]->ctx;
|
|
|
3304
|
|
260
|
3305 if (module->create_srv_conf) {
|
|
|
3306 mconf = module->create_srv_conf(cf);
|
|
|
3307 if (mconf == NULL) {
|
|
|
3308 return NGX_CONF_ERROR;
|
|
|
3309 }
|
|
|
3310
|
|
|
3311 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3312 }
|
|
|
3313
|
|
200
|
3314 if (module->create_loc_conf) {
|
|
|
3315 mconf = module->create_loc_conf(cf);
|
|
|
3316 if (mconf == NULL) {
|
|
|
3317 return NGX_CONF_ERROR;
|
|
|
3318 }
|
|
|
3319
|
|
|
3320 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3321 }
|
|
|
3322 }
|
|
|
3323
|
|
|
3324
|
|
|
3325 /* parse inside upstream{} */
|
|
|
3326
|
|
|
3327 pcf = *cf;
|
|
|
3328 cf->ctx = ctx;
|
|
|
3329 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3330
|
|
|
3331 rv = ngx_conf_parse(cf, NULL);
|
|
|
3332
|
|
|
3333 *cf = pcf;
|
|
|
3334
|
|
|
3335 if (rv != NGX_CONF_OK) {
|
|
|
3336 return rv;
|
|
|
3337 }
|
|
|
3338
|
|
|
3339 if (uscf->servers == NULL) {
|
|
|
3340 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3341 "no servers are inside upstream");
|
|
|
3342 return NGX_CONF_ERROR;
|
|
|
3343 }
|
|
|
3344
|
|
|
3345 return rv;
|
|
|
3346 }
|
|
|
3347
|
|
|
3348
|
|
|
3349 static char *
|
|
|
3350 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3351 {
|
|
|
3352 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3353
|
|
260
|
3354 time_t fail_timeout;
|
|
|
3355 ngx_str_t *value, s;
|
|
|
3356 ngx_url_t u;
|
|
|
3357 ngx_int_t weight, max_fails;
|
|
|
3358 ngx_uint_t i;
|
|
|
3359 ngx_http_upstream_server_t *us;
|
|
200
|
3360
|
|
|
3361 if (uscf->servers == NULL) {
|
|
260
|
3362 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3363 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3364 if (uscf->servers == NULL) {
|
|
|
3365 return NGX_CONF_ERROR;
|
|
|
3366 }
|
|
|
3367 }
|
|
|
3368
|
|
260
|
3369 us = ngx_array_push(uscf->servers);
|
|
|
3370 if (us == NULL) {
|
|
200
|
3371 return NGX_CONF_ERROR;
|
|
|
3372 }
|
|
|
3373
|
|
260
|
3374 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3375
|
|
200
|
3376 value = cf->args->elts;
|
|
|
3377
|
|
|
3378 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3379
|
|
|
3380 u.url = value[1];
|
|
266
|
3381 u.default_port = 80;
|
|
200
|
3382
|
|
340
|
3383 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3384 if (u.err) {
|
|
|
3385 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3386 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3387 }
|
|
|
3388
|
|
|
3389 return NGX_CONF_ERROR;
|
|
|
3390 }
|
|
|
3391
|
|
212
|
3392 weight = 1;
|
|
260
|
3393 max_fails = 1;
|
|
|
3394 fail_timeout = 10;
|
|
|
3395
|
|
|
3396 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3397
|
|
|
3398 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3399
|
|
|
3400 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3401 goto invalid;
|
|
|
3402 }
|
|
|
3403
|
|
|
3404 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3405
|
|
|
3406 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3407 goto invalid;
|
|
|
3408 }
|
|
|
3409
|
|
260
|
3410 continue;
|
|
|
3411 }
|
|
|
3412
|
|
|
3413 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3414
|
|
|
3415 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3416 goto invalid;
|
|
|
3417 }
|
|
|
3418
|
|
|
3419 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3420
|
|
|
3421 if (max_fails == NGX_ERROR) {
|
|
|
3422 goto invalid;
|
|
|
3423 }
|
|
|
3424
|
|
|
3425 continue;
|
|
212
|
3426 }
|
|
260
|
3427
|
|
|
3428 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3429
|
|
|
3430 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3431 goto invalid;
|
|
|
3432 }
|
|
|
3433
|
|
|
3434 s.len = value[i].len - 13;
|
|
|
3435 s.data = &value[i].data[13];
|
|
|
3436
|
|
|
3437 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3438
|
|
372
|
3439 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3440 goto invalid;
|
|
|
3441 }
|
|
|
3442
|
|
|
3443 continue;
|
|
|
3444 }
|
|
|
3445
|
|
326
|
3446 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3447
|
|
|
3448 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3449 goto invalid;
|
|
|
3450 }
|
|
|
3451
|
|
|
3452 us->backup = 1;
|
|
|
3453
|
|
|
3454 continue;
|
|
|
3455 }
|
|
|
3456
|
|
260
|
3457 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3458
|
|
|
3459 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3460 goto invalid;
|
|
|
3461 }
|
|
|
3462
|
|
|
3463 us->down = 1;
|
|
|
3464
|
|
|
3465 continue;
|
|
|
3466 }
|
|
|
3467
|
|
|
3468 goto invalid;
|
|
212
|
3469 }
|
|
|
3470
|
|
260
|
3471 us->addrs = u.addrs;
|
|
|
3472 us->naddrs = u.naddrs;
|
|
|
3473 us->weight = weight;
|
|
|
3474 us->max_fails = max_fails;
|
|
|
3475 us->fail_timeout = fail_timeout;
|
|
200
|
3476
|
|
|
3477 return NGX_CONF_OK;
|
|
212
|
3478
|
|
|
3479 invalid:
|
|
|
3480
|
|
260
|
3481 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3482 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3483
|
|
|
3484 return NGX_CONF_ERROR;
|
|
200
|
3485 }
|
|
|
3486
|
|
|
3487
|
|
|
3488 ngx_http_upstream_srv_conf_t *
|
|
260
|
3489 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3490 {
|
|
|
3491 ngx_uint_t i;
|
|
260
|
3492 ngx_http_upstream_server_t *us;
|
|
200
|
3493 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3494 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3495
|
|
260
|
3496 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3497
|
|
340
|
3498 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3499 if (u->err) {
|
|
|
3500 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3501 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3502 }
|
|
|
3503
|
|
|
3504 return NULL;
|
|
|
3505 }
|
|
|
3506 }
|
|
|
3507
|
|
|
3508 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3509
|
|
|
3510 uscfp = umcf->upstreams.elts;
|
|
|
3511
|
|
|
3512 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3513
|
|
|
3514 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3515 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3516 != 0)
|
|
|
3517 {
|
|
200
|
3518 continue;
|
|
|
3519 }
|
|
|
3520
|
|
260
|
3521 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3522 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3523 {
|
|
260
|
3524 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3525 "duplicate upstream \"%V\"", &u->host);
|
|
|
3526 return NULL;
|
|
200
|
3527 }
|
|
260
|
3528
|
|
266
|
3529 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3530 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3531 "upstream \"%V\" may not have port %d",
|
|
|
3532 &u->host, u->port);
|
|
|
3533 return NULL;
|
|
|
3534 }
|
|
|
3535
|
|
|
3536 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3537 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3538 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3539 &u->host, uscfp[i]->port,
|
|
336
|
3540 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3541 return NULL;
|
|
|
3542 }
|
|
|
3543
|
|
|
3544 if (uscfp[i]->port != u->port) {
|
|
|
3545 continue;
|
|
260
|
3546 }
|
|
|
3547
|
|
324
|
3548 if (uscfp[i]->default_port && u->default_port
|
|
|
3549 && uscfp[i]->default_port != u->default_port)
|
|
|
3550 {
|
|
|
3551 continue;
|
|
|
3552 }
|
|
|
3553
|
|
260
|
3554 return uscfp[i];
|
|
200
|
3555 }
|
|
|
3556
|
|
|
3557 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3558 if (uscf == NULL) {
|
|
|
3559 return NULL;
|
|
|
3560 }
|
|
|
3561
|
|
260
|
3562 uscf->flags = flags;
|
|
200
|
3563 uscf->host = u->host;
|
|
336
|
3564 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3565 uscf->line = cf->conf_file->line;
|
|
266
|
3566 uscf->port = u->port;
|
|
|
3567 uscf->default_port = u->default_port;
|
|
260
|
3568
|
|
|
3569 if (u->naddrs == 1) {
|
|
|
3570 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3571 sizeof(ngx_http_upstream_server_t));
|
|
|
3572 if (uscf->servers == NULL) {
|
|
|
3573 return NGX_CONF_ERROR;
|
|
|
3574 }
|
|
|
3575
|
|
|
3576 us = ngx_array_push(uscf->servers);
|
|
|
3577 if (us == NULL) {
|
|
|
3578 return NGX_CONF_ERROR;
|
|
|
3579 }
|
|
|
3580
|
|
|
3581 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3582
|
|
|
3583 us->addrs = u->addrs;
|
|
|
3584 us->naddrs = u->naddrs;
|
|
|
3585 }
|
|
200
|
3586
|
|
|
3587 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3588 if (uscfp == NULL) {
|
|
|
3589 return NULL;
|
|
|
3590 }
|
|
|
3591
|
|
|
3592 *uscfp = uscf;
|
|
|
3593
|
|
|
3594 return uscf;
|
|
|
3595 }
|
|
|
3596
|
|
|
3597
|
|
356
|
3598 ngx_int_t
|
|
|
3599 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3600 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3601 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3602 {
|
|
|
3603 ngx_str_t *h;
|
|
|
3604 ngx_uint_t i, j;
|
|
|
3605 ngx_array_t hide_headers;
|
|
|
3606 ngx_hash_key_t *hk;
|
|
|
3607
|
|
|
3608 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3609 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3610 {
|
|
|
3611 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3612
|
|
|
3613 if (conf->hide_headers_hash.buckets) {
|
|
|
3614 return NGX_OK;
|
|
|
3615 }
|
|
|
3616
|
|
|
3617 conf->hide_headers = prev->hide_headers;
|
|
|
3618 conf->pass_headers = prev->pass_headers;
|
|
|
3619
|
|
|
3620 } else {
|
|
|
3621 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3622 conf->hide_headers = prev->hide_headers;
|
|
|
3623 }
|
|
|
3624
|
|
|
3625 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3626 conf->pass_headers = prev->pass_headers;
|
|
|
3627 }
|
|
|
3628 }
|
|
|
3629
|
|
|
3630 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3631 != NGX_OK)
|
|
|
3632 {
|
|
|
3633 return NGX_ERROR;
|
|
|
3634 }
|
|
|
3635
|
|
|
3636 for (h = default_hide_headers; h->len; h++) {
|
|
|
3637 hk = ngx_array_push(&hide_headers);
|
|
|
3638 if (hk == NULL) {
|
|
|
3639 return NGX_ERROR;
|
|
|
3640 }
|
|
|
3641
|
|
|
3642 hk->key = *h;
|
|
|
3643 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3644 hk->value = (void *) 1;
|
|
|
3645 }
|
|
|
3646
|
|
|
3647 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3648
|
|
|
3649 h = conf->hide_headers->elts;
|
|
|
3650
|
|
|
3651 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3652
|
|
|
3653 hk = hide_headers.elts;
|
|
|
3654
|
|
|
3655 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3656 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3657 goto exist;
|
|
|
3658 }
|
|
|
3659 }
|
|
|
3660
|
|
|
3661 hk = ngx_array_push(&hide_headers);
|
|
|
3662 if (hk == NULL) {
|
|
|
3663 return NGX_ERROR;
|
|
|
3664 }
|
|
|
3665
|
|
|
3666 hk->key = h[i];
|
|
|
3667 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3668 hk->value = (void *) 1;
|
|
|
3669
|
|
|
3670 exist:
|
|
|
3671
|
|
|
3672 continue;
|
|
|
3673 }
|
|
|
3674 }
|
|
|
3675
|
|
|
3676 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3677
|
|
|
3678 h = conf->pass_headers->elts;
|
|
|
3679 hk = hide_headers.elts;
|
|
|
3680
|
|
|
3681 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3682 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3683
|
|
|
3684 if (hk[j].key.data == NULL) {
|
|
|
3685 continue;
|
|
|
3686 }
|
|
|
3687
|
|
|
3688 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3689 hk[j].key.data = NULL;
|
|
|
3690 break;
|
|
|
3691 }
|
|
|
3692 }
|
|
|
3693 }
|
|
|
3694 }
|
|
|
3695
|
|
|
3696 hash->hash = &conf->hide_headers_hash;
|
|
|
3697 hash->key = ngx_hash_key_lc;
|
|
|
3698 hash->pool = cf->pool;
|
|
|
3699 hash->temp_pool = NULL;
|
|
|
3700
|
|
|
3701 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3702 }
|
|
|
3703
|
|
|
3704
|
|
58
|
3705 static void *
|
|
|
3706 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3707 {
|
|
|
3708 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3709
|
|
|
3710 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3711 if (umcf == NULL) {
|
|
|
3712 return NULL;
|
|
|
3713 }
|
|
|
3714
|
|
200
|
3715 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3716 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3717 != NGX_OK)
|
|
|
3718 {
|
|
|
3719 return NGX_CONF_ERROR;
|
|
|
3720 }
|
|
|
3721
|
|
58
|
3722 return umcf;
|
|
|
3723 }
|
|
|
3724
|
|
|
3725
|
|
|
3726 static char *
|
|
200
|
3727 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3728 {
|
|
|
3729 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3730
|
|
200
|
3731 ngx_uint_t i;
|
|
|
3732 ngx_array_t headers_in;
|
|
|
3733 ngx_hash_key_t *hk;
|
|
|
3734 ngx_hash_init_t hash;
|
|
260
|
3735 ngx_http_upstream_init_pt init;
|
|
200
|
3736 ngx_http_upstream_header_t *header;
|
|
|
3737 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3738
|
|
|
3739 uscfp = umcf->upstreams.elts;
|
|
|
3740
|
|
|
3741 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3742
|
|
|
3743 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3744 ngx_http_upstream_init_round_robin;
|
|
|
3745
|
|
|
3746 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3747 return NGX_CONF_ERROR;
|
|
|
3748 }
|
|
|
3749 }
|
|
198
|
3750
|
|
212
|
3751
|
|
260
|
3752 /* upstream_headers_in_hash */
|
|
|
3753
|
|
198
|
3754 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3755 != NGX_OK)
|
|
58
|
3756 {
|
|
|
3757 return NGX_CONF_ERROR;
|
|
|
3758 }
|
|
|
3759
|
|
198
|
3760 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3761 hk = ngx_array_push(&headers_in);
|
|
|
3762 if (hk == NULL) {
|
|
|
3763 return NGX_CONF_ERROR;
|
|
|
3764 }
|
|
|
3765
|
|
|
3766 hk->key = header->name;
|
|
|
3767 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3768 hk->value = header;
|
|
|
3769 }
|
|
|
3770
|
|
|
3771 hash.hash = &umcf->headers_in_hash;
|
|
|
3772 hash.key = ngx_hash_key_lc;
|
|
|
3773 hash.max_size = 512;
|
|
244
|
3774 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3775 hash.name = "upstream_headers_in_hash";
|
|
|
3776 hash.pool = cf->pool;
|
|
|
3777 hash.temp_pool = NULL;
|
|
|
3778
|
|
|
3779 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3780 return NGX_CONF_ERROR;
|
|
|
3781 }
|
|
58
|
3782
|
|
|
3783 return NGX_CONF_OK;
|
|
|
3784 }
|
