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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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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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294
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24 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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25 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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26 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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27 ngx_http_upstream_t *u);
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130
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28 static void
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29 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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30 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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31 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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32 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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33 ssize_t bytes);
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58
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34 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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35 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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318
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36 static void ngx_http_upstream_store(ngx_http_request_t *r,
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37 ngx_http_upstream_t *u);
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28
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38 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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39 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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40 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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41 static void ngx_http_upstream_cleanup(void *data);
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28
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42 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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43 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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44
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58
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45 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t
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48 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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50 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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52 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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54 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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55 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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56 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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57 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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58 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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59 ngx_table_elt_t *h, ngx_uint_t offset);
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60 static ngx_int_t
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61 ngx_http_upstream_copy_multi_header_lines(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 ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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66 ngx_table_elt_t *h, ngx_uint_t offset);
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67 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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68 ngx_table_elt_t *h, ngx_uint_t offset);
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69 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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70 ngx_table_elt_t *h, ngx_uint_t offset);
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71 #if (NGX_HTTP_GZIP)
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72 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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74 #endif
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75
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122
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76 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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77 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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78 ngx_http_variable_value_t *v, uintptr_t data);
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122
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79 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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80 ngx_http_variable_value_t *v, uintptr_t data);
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81 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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82 ngx_http_variable_value_t *v, uintptr_t data);
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83
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200
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84 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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85 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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86 void *conf);
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87
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58
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88 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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89 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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90
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126
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91 #if (NGX_HTTP_SSL)
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140
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92 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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93 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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94 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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95 #endif
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96
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58
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97
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98 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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99
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100 { ngx_string("Status"),
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101 ngx_http_upstream_process_header_line,
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102 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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103 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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104
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105 { ngx_string("Content-Type"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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108 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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109
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110 { ngx_string("Content-Length"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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113 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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114
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115 { ngx_string("Date"),
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116 ngx_http_upstream_process_header_line,
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117 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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118 ngx_http_upstream_copy_header_line,
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119 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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120
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318
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121 { ngx_string("Last-Modified"),
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122 ngx_http_upstream_process_header_line,
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123 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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124 ngx_http_upstream_copy_header_line,
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125 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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126
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58
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127 { ngx_string("Server"),
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128 ngx_http_upstream_process_header_line,
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129 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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130 ngx_http_upstream_copy_header_line,
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131 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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132
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78
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133 { ngx_string("WWW-Authenticate"),
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134 ngx_http_upstream_process_header_line,
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135 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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136 ngx_http_upstream_copy_header_line, 0, 0 },
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137
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58
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138 { ngx_string("Location"),
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139 ngx_http_upstream_ignore_header_line, 0,
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64
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140 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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141
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142 { ngx_string("Refresh"),
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143 ngx_http_upstream_ignore_header_line, 0,
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64
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144 ngx_http_upstream_rewrite_refresh, 0, 0 },
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145
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146 { ngx_string("Set-Cookie"),
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147 ngx_http_upstream_ignore_header_line, 0,
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80
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148 ngx_http_upstream_copy_header_line, 0, 1 },
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149
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150 { ngx_string("Content-Disposition"),
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151 ngx_http_upstream_ignore_header_line, 0,
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152 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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153
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154 { ngx_string("Cache-Control"),
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155 ngx_http_upstream_process_multi_header_lines,
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156 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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157 ngx_http_upstream_copy_multi_header_lines,
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64
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158 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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159
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122
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160 { ngx_string("Expires"),
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161 ngx_http_upstream_process_header_line,
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162 offsetof(ngx_http_upstream_headers_in_t, expires),
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163 ngx_http_upstream_copy_header_line,
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164 offsetof(ngx_http_headers_out_t, expires), 1 },
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165
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126
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166 { ngx_string("Accept-Ranges"),
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167 ngx_http_upstream_process_header_line,
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168 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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169 ngx_http_upstream_copy_header_line,
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170 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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171
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58
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172 { ngx_string("Connection"),
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173 ngx_http_upstream_ignore_header_line, 0,
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64
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174 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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175
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190
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176 { ngx_string("Keep-Alive"),
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177 ngx_http_upstream_ignore_header_line, 0,
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178 ngx_http_upstream_ignore_header_line, 0, 0 },
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179
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58
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180 { ngx_string("X-Powered-By"),
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181 ngx_http_upstream_ignore_header_line, 0,
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198
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182 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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183
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184 { ngx_string("X-Accel-Expires"),
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185 ngx_http_upstream_process_header_line,
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186 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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187 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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188
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189 { ngx_string("X-Accel-Redirect"),
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190 ngx_http_upstream_process_header_line,
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191 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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192 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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193
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76
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194 { ngx_string("X-Accel-Limit-Rate"),
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195 ngx_http_upstream_process_limit_rate, 0,
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196 ngx_http_upstream_ignore_header_line, 0, 0 },
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197
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198
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198 { ngx_string("X-Accel-Buffering"),
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199 ngx_http_upstream_process_buffering, 0,
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200 ngx_http_upstream_ignore_header_line, 0, 0 },
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201
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206
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202 { ngx_string("X-Accel-Charset"),
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203 ngx_http_upstream_process_charset, 0,
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204 ngx_http_upstream_ignore_header_line, 0, 0 },
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205
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58
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206 #if (NGX_HTTP_GZIP)
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207 { ngx_string("Content-Encoding"),
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208 ngx_http_upstream_process_header_line,
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209 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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210 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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211 #endif
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212
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64
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213 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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214 };
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28
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215
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216
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200
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217 static ngx_command_t ngx_http_upstream_commands[] = {
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218
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219 { ngx_string("upstream"),
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220 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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221 ngx_http_upstream,
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222 0,
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223 0,
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224 NULL },
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225
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226 { ngx_string("server"),
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260
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227 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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228 ngx_http_upstream_server,
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229 NGX_HTTP_SRV_CONF_OFFSET,
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230 0,
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231 NULL },
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232
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233 ngx_null_command
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234 };
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235
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236
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237 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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238 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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239 NULL, /* postconfiguration */
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240
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241 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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242 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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243
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244 NULL, /* create server configuration */
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245 NULL, /* merge server configuration */
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246
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247 NULL, /* create location configuration */
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248 NULL /* merge location configuration */
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249 };
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126
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250
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28
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251
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252 ngx_module_t ngx_http_upstream_module = {
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58
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253 NGX_MODULE_V1,
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28
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254 &ngx_http_upstream_module_ctx, /* module context */
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200
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255 ngx_http_upstream_commands, /* module directives */
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28
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256 NGX_HTTP_MODULE, /* module type */
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90
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257 NULL, /* init master */
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28
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258 NULL, /* init module */
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90
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259 NULL, /* init process */
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260 NULL, /* init thread */
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261 NULL, /* exit thread */
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262 NULL, /* exit process */
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263 NULL, /* exit master */
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264 NGX_MODULE_V1_PADDING
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28
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265 };
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266
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267
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122
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268 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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269
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298
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270 { ngx_string("upstream_addr"), NULL,
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271 ngx_http_upstream_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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272
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186
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273 { ngx_string("upstream_status"), NULL,
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132
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274 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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275
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186
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276 { ngx_string("upstream_response_time"), NULL,
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132
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277 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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278
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186
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279 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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280 };
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281
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282
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36
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283 void
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284 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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285 {
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58
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286 ngx_connection_t *c;
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118
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287 ngx_http_cleanup_t *cln;
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58
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288 ngx_http_upstream_t *u;
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289 ngx_http_core_loc_conf_t *clcf;
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28
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290
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291 c = r->connection;
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292
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293 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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294 "http init upstream, client timer: %d", c->read->timer_set);
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295
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296 if (c->read->timer_set) {
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297 ngx_del_timer(c->read);
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298 }
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299
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178
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300 u = r->upstream;
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301
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302 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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303 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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304 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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305 }
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126
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306
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28
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307 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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308
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309 if (!c->write->active) {
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80
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310 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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311 == NGX_ERROR)
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28
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312 {
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313 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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314 return;
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315 }
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316 }
|
|
|
317 }
|
|
|
318
|
|
86
|
319 if (r->request_body) {
|
|
|
320 u->request_bufs = r->request_body->bufs;
|
|
|
321 }
|
|
58
|
322
|
|
260
|
323 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) {
|
|
|
324 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
325 return;
|
|
|
326 }
|
|
|
327
|
|
86
|
328 if (u->create_request(r) != NGX_OK) {
|
|
28
|
329 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
330 return;
|
|
|
331 }
|
|
|
332
|
|
58
|
333 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
334
|
|
|
335 u->output.sendfile = r->connection->sendfile;
|
|
|
336 u->output.pool = r->pool;
|
|
|
337 u->output.bufs.num = 1;
|
|
58
|
338 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
339 u->output.output_filter = ngx_chain_writer;
|
|
|
340 u->output.filter_ctx = &u->writer;
|
|
|
341
|
|
|
342 u->writer.pool = r->pool;
|
|
|
343
|
|
296
|
344 if (r->upstream_states == NULL) {
|
|
|
345
|
|
|
346 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
347 sizeof(ngx_http_upstream_state_t));
|
|
|
348 if (r->upstream_states == NULL) {
|
|
|
349 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
350 return;
|
|
|
351 }
|
|
|
352
|
|
|
353 } else {
|
|
|
354
|
|
|
355 u->state = ngx_array_push(r->upstream_states);
|
|
|
356 if (u->state == NULL) {
|
|
|
357 ngx_http_upstream_finalize_request(r, u,
|
|
|
358 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361
|
|
|
362 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
363 }
|
|
|
364
|
|
142
|
365 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
366 if (cln == NULL) {
|
|
|
367 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
368 return;
|
|
|
369 }
|
|
|
370
|
|
|
371 cln->handler = ngx_http_upstream_cleanup;
|
|
|
372 cln->data = r;
|
|
|
373 u->cleanup = &cln->handler;
|
|
|
374
|
|
320
|
375 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
376
|
|
28
|
377 ngx_http_upstream_connect(r, u);
|
|
|
378 }
|
|
|
379
|
|
|
380
|
|
36
|
381 static void
|
|
58
|
382 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
383 {
|
|
|
384 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
385 }
|
|
|
386
|
|
|
387
|
|
|
388 static void
|
|
|
389 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
390 {
|
|
|
391 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
392 }
|
|
|
393
|
|
|
394
|
|
|
395 static void
|
|
|
396 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
397 ngx_event_t *ev)
|
|
28
|
398 {
|
|
|
399 int n;
|
|
|
400 char buf[1];
|
|
126
|
401 ngx_err_t err;
|
|
28
|
402 ngx_connection_t *c;
|
|
|
403 ngx_http_upstream_t *u;
|
|
|
404
|
|
76
|
405 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
406 "http upstream check client, write event:%d, \"%V\"",
|
|
|
407 ev->write, &r->uri);
|
|
28
|
408
|
|
58
|
409 c = r->connection;
|
|
32
|
410 u = r->upstream;
|
|
|
411
|
|
132
|
412 if (c->error) {
|
|
76
|
413 ngx_http_upstream_finalize_request(r, u,
|
|
|
414 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
415 return;
|
|
|
416 }
|
|
|
417
|
|
32
|
418 if (u->peer.connection == NULL) {
|
|
|
419 return;
|
|
|
420 }
|
|
|
421
|
|
28
|
422 #if (NGX_HAVE_KQUEUE)
|
|
|
423
|
|
|
424 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
425
|
|
|
426 if (!ev->pending_eof) {
|
|
|
427 return;
|
|
|
428 }
|
|
|
429
|
|
|
430 ev->eof = 1;
|
|
132
|
431 c->error = 1;
|
|
28
|
432
|
|
|
433 if (ev->kq_errno) {
|
|
|
434 ev->error = 1;
|
|
|
435 }
|
|
|
436
|
|
318
|
437 if (!u->cachable && !u->store && u->peer.connection) {
|
|
28
|
438 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
439 "kevent() reported that client closed prematurely "
|
|
|
440 "connection, so upstream connection is closed too");
|
|
28
|
441 ngx_http_upstream_finalize_request(r, u,
|
|
|
442 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
443 return;
|
|
|
444 }
|
|
|
445
|
|
|
446 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
447 "kevent() reported that client closed "
|
|
|
448 "prematurely connection");
|
|
|
449
|
|
|
450 if (u->peer.connection == NULL) {
|
|
|
451 ngx_http_upstream_finalize_request(r, u,
|
|
|
452 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
453 return;
|
|
|
454 }
|
|
|
455
|
|
|
456 return;
|
|
|
457 }
|
|
|
458
|
|
|
459 #endif
|
|
|
460
|
|
|
461 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
462
|
|
|
463 err = ngx_socket_errno;
|
|
|
464
|
|
286
|
465 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
466 "http upstream recv(): %d", n);
|
|
|
467
|
|
28
|
468 /*
|
|
|
469 * we do not need to disable the write event because
|
|
|
470 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
471 */
|
|
|
472
|
|
|
473 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
474 return;
|
|
|
475 }
|
|
|
476
|
|
|
477 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
478 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
479 ngx_http_upstream_finalize_request(r, u,
|
|
|
480 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
481 return;
|
|
|
482 }
|
|
|
483 }
|
|
|
484
|
|
|
485 if (n > 0) {
|
|
|
486 return;
|
|
|
487 }
|
|
|
488
|
|
|
489 if (n == -1) {
|
|
|
490 if (err == NGX_EAGAIN) {
|
|
|
491 return;
|
|
|
492 }
|
|
|
493
|
|
|
494 ev->error = 1;
|
|
|
495
|
|
32
|
496 } else { /* n == 0 */
|
|
28
|
497 err = 0;
|
|
|
498 }
|
|
|
499
|
|
78
|
500 ev->eof = 1;
|
|
132
|
501 c->error = 1;
|
|
78
|
502
|
|
318
|
503 if (!u->cachable && !u->store && u->peer.connection) {
|
|
28
|
504 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
505 "client closed prematurely connection, "
|
|
|
506 "so upstream connection is closed too");
|
|
|
507 ngx_http_upstream_finalize_request(r, u,
|
|
|
508 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
509 return;
|
|
|
510 }
|
|
|
511
|
|
|
512 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
513 "client closed prematurely connection");
|
|
|
514
|
|
|
515 if (u->peer.connection == NULL) {
|
|
|
516 ngx_http_upstream_finalize_request(r, u,
|
|
|
517 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
518 return;
|
|
|
519 }
|
|
|
520 }
|
|
|
521
|
|
|
522
|
|
36
|
523 static void
|
|
|
524 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
525 {
|
|
140
|
526 ngx_int_t rc;
|
|
214
|
527 ngx_time_t *tp;
|
|
140
|
528 ngx_connection_t *c;
|
|
28
|
529
|
|
32
|
530 r->connection->log->action = "connecting to upstream";
|
|
28
|
531
|
|
|
532 r->connection->single_connection = 0;
|
|
|
533
|
|
262
|
534 if (u->state && u->state->response_sec) {
|
|
214
|
535 tp = ngx_timeofday();
|
|
262
|
536 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
537 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
538 }
|
|
|
539
|
|
296
|
540 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
541 if (u->state == NULL) {
|
|
|
542 ngx_http_upstream_finalize_request(r, u,
|
|
|
543 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
544 return;
|
|
|
545 }
|
|
|
546
|
|
|
547 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
548
|
|
|
549 tp = ngx_timeofday();
|
|
262
|
550 u->state->response_sec = tp->sec;
|
|
|
551 u->state->response_msec = tp->msec;
|
|
214
|
552
|
|
28
|
553 rc = ngx_event_connect_peer(&u->peer);
|
|
|
554
|
|
|
555 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
556 "http upstream connect: %i", rc);
|
|
|
557
|
|
|
558 if (rc == NGX_ERROR) {
|
|
|
559 ngx_http_upstream_finalize_request(r, u,
|
|
|
560 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
561 return;
|
|
|
562 }
|
|
|
563
|
|
260
|
564 u->state->peer = u->peer.name;
|
|
28
|
565
|
|
92
|
566 if (rc == NGX_BUSY) {
|
|
|
567 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
568 }
|
|
|
569
|
|
|
570 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
571 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
572 return;
|
|
|
573 }
|
|
|
574
|
|
126
|
575 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
576
|
|
28
|
577 c = u->peer.connection;
|
|
|
578
|
|
|
579 c->data = r;
|
|
140
|
580
|
|
58
|
581 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
582 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
583
|
|
|
584 c->sendfile = r->connection->sendfile;
|
|
|
585
|
|
|
586 c->pool = r->pool;
|
|
|
587 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
588
|
|
|
589 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
590
|
|
|
591 u->writer.out = NULL;
|
|
|
592 u->writer.last = &u->writer.out;
|
|
|
593 u->writer.connection = c;
|
|
|
594 u->writer.limit = 0;
|
|
|
595
|
|
|
596 if (u->request_sent) {
|
|
58
|
597 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
598 ngx_http_upstream_finalize_request(r, u,
|
|
|
599 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
600 return;
|
|
|
601 }
|
|
28
|
602 }
|
|
|
603
|
|
276
|
604 if (r->request_body
|
|
|
605 && r->request_body->buf
|
|
|
606 && r->request_body->temp_file
|
|
|
607 && r == r->main)
|
|
|
608 {
|
|
122
|
609 /*
|
|
|
610 * the r->request_body->buf can be reused for one request only,
|
|
|
611 * the subrequests should allocate their own temporay bufs
|
|
|
612 */
|
|
|
613
|
|
|
614 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
615 if (u->output.free == NULL) {
|
|
|
616 ngx_http_upstream_finalize_request(r, u,
|
|
|
617 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
618 return;
|
|
28
|
619 }
|
|
122
|
620
|
|
|
621 u->output.free->buf = r->request_body->buf;
|
|
|
622 u->output.free->next = NULL;
|
|
|
623 u->output.allocated = 1;
|
|
|
624
|
|
|
625 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
626 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
627 r->request_body->buf->tag = u->output.tag;
|
|
28
|
628 }
|
|
|
629
|
|
|
630 u->request_sent = 0;
|
|
|
631
|
|
|
632 if (rc == NGX_AGAIN) {
|
|
|
633 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
634 return;
|
|
|
635 }
|
|
|
636
|
|
126
|
637 #if (NGX_HTTP_SSL)
|
|
|
638
|
|
140
|
639 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
640 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
641 return;
|
|
|
642 }
|
|
|
643
|
|
|
644 #endif
|
|
|
645
|
|
28
|
646 ngx_http_upstream_send_request(r, u);
|
|
|
647 }
|
|
|
648
|
|
|
649
|
|
126
|
650 #if (NGX_HTTP_SSL)
|
|
|
651
|
|
|
652 static void
|
|
140
|
653 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
654 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
655 {
|
|
260
|
656 ngx_int_t rc;
|
|
140
|
657
|
|
|
658 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
659 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
660 == NGX_ERROR)
|
|
|
661 {
|
|
|
662 ngx_http_upstream_finalize_request(r, u,
|
|
|
663 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
664 return;
|
|
|
665 }
|
|
|
666
|
|
|
667 c->sendfile = 0;
|
|
168
|
668 u->output.sendfile = 0;
|
|
140
|
669
|
|
318
|
670 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
140
|
671 ngx_http_upstream_finalize_request(r, u,
|
|
|
672 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
673 return;
|
|
|
674 }
|
|
|
675
|
|
190
|
676 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
677
|
|
140
|
678 rc = ngx_ssl_handshake(c);
|
|
|
679
|
|
|
680 if (rc == NGX_AGAIN) {
|
|
|
681 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
682 return;
|
|
|
683 }
|
|
|
684
|
|
|
685 ngx_http_upstream_ssl_handshake(c);
|
|
|
686 }
|
|
|
687
|
|
|
688
|
|
|
689 static void
|
|
126
|
690 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
691 {
|
|
|
692 ngx_http_request_t *r;
|
|
|
693 ngx_http_upstream_t *u;
|
|
|
694
|
|
|
695 r = c->data;
|
|
|
696 u = r->upstream;
|
|
|
697
|
|
|
698 if (c->ssl->handshaked) {
|
|
|
699
|
|
260
|
700 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
701
|
|
126
|
702 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
703 c->read->handler = ngx_http_upstream_process_header;
|
|
|
704
|
|
|
705 ngx_http_upstream_send_request(r, u);
|
|
|
706
|
|
|
707 return;
|
|
|
708 }
|
|
|
709
|
|
|
710 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
711
|
|
|
712 }
|
|
|
713
|
|
|
714 #endif
|
|
|
715
|
|
|
716
|
|
58
|
717 static ngx_int_t
|
|
36
|
718 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
719 {
|
|
|
720 ngx_chain_t *cl;
|
|
|
721
|
|
58
|
722 if (u->reinit_request(r) != NGX_OK) {
|
|
|
723 return NGX_ERROR;
|
|
|
724 }
|
|
|
725
|
|
|
726 ngx_memzero(&r->upstream->headers_in,
|
|
|
727 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
728
|
|
|
729 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
730 sizeof(ngx_table_elt_t))
|
|
|
731 != NGX_OK)
|
|
58
|
732 {
|
|
|
733 return NGX_ERROR;
|
|
28
|
734 }
|
|
|
735
|
|
|
736 /* reinit the request chain */
|
|
126
|
737
|
|
58
|
738 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
739 cl->buf->pos = cl->buf->start;
|
|
|
740 cl->buf->file_pos = 0;
|
|
|
741 }
|
|
|
742
|
|
58
|
743 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
744
|
|
122
|
745 if (r->request_body && r->request_body->temp_file
|
|
146
|
746 && r != r->main && u->output.buf)
|
|
122
|
747 {
|
|
|
748 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
749 if (u->output.free == NULL) {
|
|
|
750 return NGX_ERROR;
|
|
58
|
751 }
|
|
122
|
752
|
|
|
753 u->output.free->buf = u->output.buf;
|
|
|
754 u->output.free->next = NULL;
|
|
|
755
|
|
|
756 u->output.buf->pos = u->output.buf->start;
|
|
|
757 u->output.buf->last = u->output.buf->start;
|
|
58
|
758 }
|
|
28
|
759
|
|
|
760 u->output.buf = NULL;
|
|
|
761 u->output.in = NULL;
|
|
|
762 u->output.busy = NULL;
|
|
126
|
763
|
|
130
|
764 /* reinit u->buffer */
|
|
126
|
765
|
|
28
|
766 #if 0
|
|
|
767 if (u->cache) {
|
|
130
|
768 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
769 u->buffer.last = u->buffer.pos;
|
|
28
|
770
|
|
|
771 } else {
|
|
130
|
772 u->buffer.pos = u->buffer.start;
|
|
|
773 u->buffer.last = u->buffer.start;
|
|
28
|
774 }
|
|
|
775 #else
|
|
58
|
776
|
|
130
|
777 u->buffer.pos = u->buffer.start;
|
|
|
778 u->buffer.last = u->buffer.start;
|
|
58
|
779
|
|
28
|
780 #endif
|
|
|
781
|
|
58
|
782 return NGX_OK;
|
|
28
|
783 }
|
|
|
784
|
|
|
785
|
|
36
|
786 static void
|
|
|
787 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
788 {
|
|
294
|
789 ngx_int_t rc;
|
|
32
|
790 ngx_connection_t *c;
|
|
126
|
791
|
|
28
|
792 c = u->peer.connection;
|
|
|
793
|
|
|
794 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
795 "http upstream send request");
|
|
|
796
|
|
294
|
797 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
798 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
799 return;
|
|
28
|
800 }
|
|
|
801
|
|
32
|
802 c->log->action = "sending request to upstream";
|
|
28
|
803
|
|
58
|
804 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
805
|
|
|
806 u->request_sent = 1;
|
|
|
807
|
|
|
808 if (rc == NGX_ERROR) {
|
|
|
809 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
810 return;
|
|
|
811 }
|
|
|
812
|
|
|
813 if (c->write->timer_set) {
|
|
|
814 ngx_del_timer(c->write);
|
|
|
815 }
|
|
|
816
|
|
|
817 if (rc == NGX_AGAIN) {
|
|
|
818 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
819
|
|
|
820 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
821 {
|
|
|
822 ngx_http_upstream_finalize_request(r, u,
|
|
|
823 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
824 return;
|
|
|
825 }
|
|
|
826
|
|
|
827 return;
|
|
|
828 }
|
|
|
829
|
|
|
830 /* rc == NGX_OK */
|
|
|
831
|
|
|
832 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
833 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
834 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
835 ngx_tcp_push_n " failed");
|
|
|
836 ngx_http_upstream_finalize_request(r, u,
|
|
|
837 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
838 return;
|
|
28
|
839 }
|
|
|
840
|
|
|
841 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
842 }
|
|
126
|
843
|
|
28
|
844 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
845
|
|
|
846 #if 1
|
|
|
847 if (c->read->ready) {
|
|
126
|
848
|
|
28
|
849 /* post aio operation */
|
|
|
850
|
|
|
851 /*
|
|
|
852 * TODO comment
|
|
|
853 * although we can post aio operation just in the end
|
|
|
854 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
855 * it's better to do here because we postpone header buffer allocation
|
|
|
856 */
|
|
|
857
|
|
|
858 ngx_http_upstream_process_header(c->read);
|
|
|
859 return;
|
|
|
860 }
|
|
|
861 #endif
|
|
|
862
|
|
58
|
863 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
864
|
|
58
|
865 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
866 ngx_http_upstream_finalize_request(r, u,
|
|
|
867 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
868 return;
|
|
|
869 }
|
|
|
870 }
|
|
|
871
|
|
|
872
|
|
36
|
873 static void
|
|
|
874 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
875 {
|
|
|
876 ngx_connection_t *c;
|
|
|
877 ngx_http_request_t *r;
|
|
|
878 ngx_http_upstream_t *u;
|
|
|
879
|
|
|
880 c = wev->data;
|
|
|
881 r = c->data;
|
|
|
882 u = r->upstream;
|
|
|
883
|
|
|
884 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
885 "http upstream send request handler");
|
|
|
886
|
|
|
887 if (wev->timedout) {
|
|
|
888 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
889 return;
|
|
|
890 }
|
|
|
891
|
|
140
|
892 #if (NGX_HTTP_SSL)
|
|
|
893
|
|
|
894 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
895 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
896 return;
|
|
|
897 }
|
|
|
898
|
|
|
899 #endif
|
|
|
900
|
|
200
|
901 if (u->header_sent) {
|
|
|
902 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
903
|
|
|
904 (void) ngx_handle_write_event(wev, 0);
|
|
|
905
|
|
|
906 return;
|
|
|
907 }
|
|
|
908
|
|
28
|
909 ngx_http_upstream_send_request(r, u);
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
36
|
913 static void
|
|
|
914 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
915 {
|
|
64
|
916 ssize_t n;
|
|
|
917 ngx_int_t rc;
|
|
122
|
918 ngx_str_t *uri, args;
|
|
198
|
919 ngx_uint_t i, flags;
|
|
64
|
920 ngx_list_part_t *part;
|
|
|
921 ngx_table_elt_t *h;
|
|
|
922 ngx_connection_t *c;
|
|
|
923 ngx_http_request_t *r;
|
|
|
924 ngx_http_upstream_t *u;
|
|
|
925 ngx_http_err_page_t *err_page;
|
|
|
926 ngx_http_core_loc_conf_t *clcf;
|
|
|
927 ngx_http_upstream_header_t *hh;
|
|
|
928 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
929
|
|
|
930 c = rev->data;
|
|
|
931 r = c->data;
|
|
|
932 u = r->upstream;
|
|
|
933
|
|
|
934 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
935 "http upstream process header");
|
|
28
|
936
|
|
32
|
937 c->log->action = "reading response header from upstream";
|
|
28
|
938
|
|
|
939 if (rev->timedout) {
|
|
|
940 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
941 return;
|
|
|
942 }
|
|
126
|
943
|
|
294
|
944 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
945 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
946 return;
|
|
|
947 }
|
|
|
948
|
|
130
|
949 if (u->buffer.start == NULL) {
|
|
|
950 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
951 if (u->buffer.start == NULL) {
|
|
28
|
952 ngx_http_upstream_finalize_request(r, u,
|
|
|
953 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
954 return;
|
|
|
955 }
|
|
|
956
|
|
130
|
957 u->buffer.pos = u->buffer.start;
|
|
|
958 u->buffer.last = u->buffer.start;
|
|
|
959 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
960 u->buffer.temporary = 1;
|
|
|
961
|
|
|
962 u->buffer.tag = u->output.tag;
|
|
28
|
963
|
|
58
|
964 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
965 sizeof(ngx_table_elt_t))
|
|
|
966 != NGX_OK)
|
|
58
|
967 {
|
|
|
968 ngx_http_upstream_finalize_request(r, u,
|
|
|
969 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
970 return;
|
|
|
971 }
|
|
|
972
|
|
28
|
973 #if 0
|
|
|
974 if (u->cache) {
|
|
130
|
975 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
976 u->buffer.last = u->buffer.pos;
|
|
28
|
977 }
|
|
|
978 #endif
|
|
|
979 }
|
|
|
980
|
|
130
|
981 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
310
|
982 u->buffer.end - u->buffer.last);
|
|
28
|
983
|
|
|
984 if (n == NGX_AGAIN) {
|
|
|
985 #if 0
|
|
|
986 ngx_add_timer(rev, u->read_timeout);
|
|
|
987 #endif
|
|
|
988
|
|
|
989 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
990 ngx_http_upstream_finalize_request(r, u,
|
|
|
991 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
992 return;
|
|
|
993 }
|
|
|
994
|
|
|
995 return;
|
|
|
996 }
|
|
|
997
|
|
|
998 if (n == 0) {
|
|
|
999 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1000 "upstream prematurely closed connection");
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 if (n == NGX_ERROR || n == 0) {
|
|
|
1004 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1005 return;
|
|
|
1006 }
|
|
|
1007
|
|
130
|
1008 u->buffer.last += n;
|
|
28
|
1009
|
|
|
1010 #if 0
|
|
|
1011 u->valid_header_in = 0;
|
|
|
1012
|
|
|
1013 u->peer.cached = 0;
|
|
|
1014 #endif
|
|
|
1015
|
|
|
1016 rc = u->process_header(r);
|
|
|
1017
|
|
|
1018 if (rc == NGX_AGAIN) {
|
|
|
1019 #if 0
|
|
|
1020 ngx_add_timer(rev, u->read_timeout);
|
|
|
1021 #endif
|
|
|
1022
|
|
130
|
1023 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1024 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1025 "upstream sent too big header");
|
|
|
1026
|
|
|
1027 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1028 return;
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1032 ngx_http_upstream_finalize_request(r, u,
|
|
|
1033 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1034 return;
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 return;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1041 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1042 return;
|
|
|
1043 }
|
|
|
1044
|
|
|
1045 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1046 ngx_http_upstream_finalize_request(r, u,
|
|
|
1047 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1048 return;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 /* rc == NGX_OK */
|
|
|
1052
|
|
248
|
1053 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1054 && r->subrequest_in_memory)
|
|
|
1055 {
|
|
|
1056 u->buffer.last = u->buffer.pos;
|
|
|
1057 }
|
|
|
1058
|
|
78
|
1059 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1060
|
|
|
1061 if (u->peer.tries > 1
|
|
|
1062 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1063 {
|
|
|
1064 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1065 return;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 #if (NGX_HTTP_CACHE)
|
|
|
1069
|
|
|
1070 if (u->peer.tries == 0
|
|
|
1071 && u->stale
|
|
|
1072 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1073 {
|
|
|
1074 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1075 ngx_http_send_cached_response(r));
|
|
58
|
1076 return;
|
|
|
1077 }
|
|
|
1078
|
|
|
1079 #endif
|
|
|
1080 }
|
|
|
1081
|
|
146
|
1082 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1083
|
|
|
1084 if (u->peer.tries > 1
|
|
|
1085 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1086 {
|
|
|
1087 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1088 return;
|
|
|
1089 }
|
|
|
1090
|
|
224
|
1091 if (u->conf->intercept_404) {
|
|
|
1092 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1093 return;
|
|
|
1094 }
|
|
58
|
1095 }
|
|
|
1096
|
|
|
1097
|
|
78
|
1098 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1099 && u->conf->intercept_errors)
|
|
36
|
1100 {
|
|
|
1101 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1102
|
|
|
1103 if (clcf->error_pages) {
|
|
|
1104
|
|
|
1105 err_page = clcf->error_pages->elts;
|
|
|
1106 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1107 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1108
|
|
|
1109 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1110
|
|
|
1111 r->headers_out.www_authenticate =
|
|
|
1112 ngx_list_push(&r->headers_out.headers);
|
|
|
1113
|
|
|
1114 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1115 ngx_http_upstream_finalize_request(r, u,
|
|
|
1116 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1117 return;
|
|
|
1118 }
|
|
|
1119
|
|
126
|
1120 *r->headers_out.www_authenticate =
|
|
78
|
1121 *u->headers_in.www_authenticate;
|
|
|
1122 }
|
|
|
1123
|
|
36
|
1124 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1125 u->headers_in.status_n);
|
|
36
|
1126 return;
|
|
|
1127 }
|
|
|
1128 }
|
|
|
1129 }
|
|
|
1130 }
|
|
|
1131
|
|
230
|
1132 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1133
|
|
64
|
1134 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1135
|
|
64
|
1136 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1137
|
|
|
1138 part = &r->upstream->headers_in.headers.part;
|
|
|
1139 h = part->elts;
|
|
|
1140
|
|
|
1141 for (i = 0; /* void */; i++) {
|
|
|
1142
|
|
|
1143 if (i >= part->nelts) {
|
|
|
1144 if (part->next == NULL) {
|
|
|
1145 break;
|
|
|
1146 }
|
|
126
|
1147
|
|
64
|
1148 part = part->next;
|
|
|
1149 h = part->elts;
|
|
|
1150 i = 0;
|
|
|
1151 }
|
|
|
1152
|
|
198
|
1153 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1154 h[i].lowcase_key, h[i].key.len);
|
|
|
1155
|
|
|
1156 if (hh && hh->redirect) {
|
|
|
1157 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1158 ngx_http_finalize_request(r,
|
|
244
|
1159 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1160 return;
|
|
|
1161 }
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164
|
|
122
|
1165 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1166 args.len = 0;
|
|
|
1167 args.data = NULL;
|
|
|
1168 flags = 0;
|
|
|
1169
|
|
|
1170 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1171 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1172 return;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1176 r->zero_in_uri = 1;
|
|
|
1177 }
|
|
|
1178
|
|
202
|
1179 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1180 r->method = NGX_HTTP_GET;
|
|
|
1181 }
|
|
|
1182
|
|
122
|
1183 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1184 return;
|
|
|
1185 }
|
|
|
1186
|
|
58
|
1187 part = &r->upstream->headers_in.headers.part;
|
|
|
1188 h = part->elts;
|
|
|
1189
|
|
|
1190 for (i = 0; /* void */; i++) {
|
|
28
|
1191
|
|
58
|
1192 if (i >= part->nelts) {
|
|
|
1193 if (part->next == NULL) {
|
|
|
1194 break;
|
|
|
1195 }
|
|
126
|
1196
|
|
58
|
1197 part = part->next;
|
|
|
1198 h = part->elts;
|
|
|
1199 i = 0;
|
|
|
1200 }
|
|
|
1201
|
|
198
|
1202 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1203 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1204 {
|
|
198
|
1205 continue;
|
|
|
1206 }
|
|
|
1207
|
|
|
1208 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1209 h[i].lowcase_key, h[i].key.len);
|
|
|
1210
|
|
|
1211 if (hh) {
|
|
|
1212 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1213 ngx_http_upstream_finalize_request(r, u,
|
|
|
1214 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1215 return;
|
|
|
1216 }
|
|
|
1217
|
|
|
1218 continue;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1222 ngx_http_upstream_finalize_request(r, u,
|
|
|
1223 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1224 return;
|
|
|
1225 }
|
|
|
1226 }
|
|
|
1227
|
|
198
|
1228 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1229 r->headers_out.server->hash = 0;
|
|
|
1230 }
|
|
|
1231
|
|
|
1232 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1233 r->headers_out.date->hash = 0;
|
|
|
1234 }
|
|
|
1235
|
|
78
|
1236 r->headers_out.status = u->headers_in.status_n;
|
|
|
1237 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1238
|
|
130
|
1239 if (r->headers_out.content_length_n != -1) {
|
|
|
1240 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1241
|
|
|
1242 } else {
|
|
|
1243 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1244 }
|
|
|
1245
|
|
248
|
1246 if (!r->subrequest_in_memory) {
|
|
|
1247 ngx_http_upstream_send_response(r, u);
|
|
|
1248 return;
|
|
|
1249 }
|
|
|
1250
|
|
|
1251 /* subrequest content in memory */
|
|
|
1252
|
|
|
1253 if (u->input_filter == NULL) {
|
|
|
1254 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1255 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1256 u->input_filter_ctx = r;
|
|
|
1257 }
|
|
|
1258
|
|
|
1259 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1260 ngx_http_upstream_finalize_request(r, u,
|
|
|
1261 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1262 return;
|
|
|
1263 }
|
|
|
1264
|
|
|
1265 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1266 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1267 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1268 return;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1272 return;
|
|
|
1273 }
|
|
|
1274
|
|
|
1275 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1276
|
|
|
1277 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1278 }
|
|
|
1279
|
|
|
1280
|
|
294
|
1281 static ngx_int_t
|
|
|
1282 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1283 {
|
|
|
1284 int err;
|
|
|
1285 socklen_t len;
|
|
|
1286
|
|
|
1287 #if (NGX_HAVE_KQUEUE)
|
|
|
1288
|
|
|
1289 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1290 if (c->write->pending_eof) {
|
|
|
1291 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1292 "kevent() reported that connect() failed");
|
|
|
1293 return NGX_ERROR;
|
|
|
1294 }
|
|
294
|
1295
|
|
|
1296 } else
|
|
|
1297 #endif
|
|
|
1298 {
|
|
296
|
1299 err = 0;
|
|
|
1300 len = sizeof(int);
|
|
|
1301
|
|
|
1302 /*
|
|
|
1303 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1304 * Solaris returns -1 and sets errno
|
|
|
1305 */
|
|
|
1306
|
|
|
1307 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1308 == -1)
|
|
|
1309 {
|
|
|
1310 err = ngx_errno;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313 if (err) {
|
|
|
1314 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1315 return NGX_ERROR;
|
|
|
1316 }
|
|
294
|
1317 }
|
|
|
1318
|
|
|
1319 return NGX_OK;
|
|
|
1320 }
|
|
|
1321
|
|
|
1322
|
|
248
|
1323 static void
|
|
|
1324 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1325 {
|
|
|
1326 size_t size;
|
|
|
1327 ssize_t n;
|
|
|
1328 ngx_buf_t *b;
|
|
|
1329 ngx_connection_t *c;
|
|
|
1330 ngx_http_request_t *r;
|
|
|
1331 ngx_http_upstream_t *u;
|
|
|
1332
|
|
|
1333 c = rev->data;
|
|
|
1334 r = c->data;
|
|
|
1335 u = r->upstream;
|
|
|
1336
|
|
|
1337 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1338 "http upstream process body on memory");
|
|
|
1339
|
|
|
1340 if (rev->timedout) {
|
|
|
1341 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1342 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1343 return;
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 b = &u->buffer;
|
|
|
1347
|
|
|
1348 for ( ;; ) {
|
|
|
1349
|
|
|
1350 size = b->end - b->last;
|
|
|
1351
|
|
|
1352 if (size == 0) {
|
|
|
1353 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1354 "upstream buffer is too small to read repsonse");
|
|
|
1355 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1356 return;
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 n = c->recv(c, b->last, size);
|
|
|
1360
|
|
|
1361 if (n == NGX_AGAIN) {
|
|
|
1362 break;
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 if (n == 0 || n == NGX_ERROR) {
|
|
|
1366 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1367 return;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1371 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1372 return;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 if (!rev->ready) {
|
|
|
1376 break;
|
|
|
1377 }
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1381 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1382 return;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 if (rev->active) {
|
|
|
1386 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1387
|
|
|
1388 } else if (rev->timer_set) {
|
|
|
1389 ngx_del_timer(rev);
|
|
|
1390 }
|
|
230
|
1391 }
|
|
|
1392
|
|
|
1393
|
|
|
1394 static void
|
|
|
1395 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1396 {
|
|
|
1397 int tcp_nodelay;
|
|
|
1398 ssize_t size;
|
|
|
1399 ngx_int_t rc;
|
|
|
1400 ngx_event_pipe_t *p;
|
|
|
1401 ngx_connection_t *c;
|
|
|
1402 ngx_pool_cleanup_t *cl;
|
|
|
1403 ngx_pool_cleanup_file_t *clf;
|
|
|
1404 ngx_http_core_loc_conf_t *clcf;
|
|
|
1405
|
|
58
|
1406 rc = ngx_http_send_header(r);
|
|
28
|
1407
|
|
274
|
1408 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1409 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1410 return;
|
|
|
1411 }
|
|
|
1412
|
|
|
1413 u->header_sent = 1;
|
|
|
1414
|
|
122
|
1415 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1416 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1417 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1418 clf = cl->data;
|
|
|
1419
|
|
|
1420 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1421 cl->handler(clf);
|
|
|
1422 cl->handler = NULL;
|
|
208
|
1423 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1424 break;
|
|
|
1425 }
|
|
|
1426 }
|
|
|
1427 }
|
|
|
1428 }
|
|
|
1429
|
|
132
|
1430 c = r->connection;
|
|
|
1431
|
|
130
|
1432 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1433
|
|
198
|
1434 if (!u->buffering) {
|
|
130
|
1435
|
|
|
1436 if (u->input_filter == NULL) {
|
|
|
1437 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1438 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1439 u->input_filter_ctx = r;
|
|
|
1440 }
|
|
|
1441
|
|
|
1442 u->peer.connection->read->handler =
|
|
|
1443 ngx_http_upstream_process_non_buffered_body;
|
|
|
1444 r->write_event_handler =
|
|
|
1445 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1446
|
|
|
1447 r->limit_rate = 0;
|
|
|
1448
|
|
|
1449 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1450 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1451 return;
|
|
|
1452 }
|
|
|
1453
|
|
132
|
1454 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1455 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1456
|
|
|
1457 tcp_nodelay = 1;
|
|
|
1458
|
|
|
1459 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1460 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1461 {
|
|
|
1462 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1463 "setsockopt(TCP_NODELAY) failed");
|
|
|
1464 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1465 return;
|
|
|
1466 }
|
|
|
1467
|
|
|
1468 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1469 }
|
|
|
1470
|
|
130
|
1471 size = u->buffer.last - u->buffer.pos;
|
|
|
1472
|
|
|
1473 if (size) {
|
|
|
1474 u->buffer.last = u->buffer.pos;
|
|
|
1475
|
|
|
1476 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1477 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1478 return;
|
|
|
1479 }
|
|
|
1480
|
|
132
|
1481 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1482
|
|
|
1483 } else {
|
|
|
1484 u->buffer.pos = u->buffer.start;
|
|
|
1485 u->buffer.last = u->buffer.start;
|
|
|
1486
|
|
|
1487 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1488 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1489 return;
|
|
|
1490 }
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 return;
|
|
|
1494 }
|
|
|
1495
|
|
28
|
1496 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1497
|
|
|
1498 #if 0
|
|
|
1499
|
|
|
1500 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1501 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1502 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1503 ngx_close_file_n " \"%s\" failed",
|
|
|
1504 u->cache->ctx.file.name.data);
|
|
|
1505 }
|
|
|
1506 }
|
|
|
1507
|
|
|
1508 if (u->cachable) {
|
|
130
|
1509 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1510
|
|
|
1511 header->expires = u->cache->ctx.expires;
|
|
|
1512 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1513 header->date = u->cache->ctx.date;
|
|
|
1514 header->length = r->headers_out.content_length_n;
|
|
|
1515 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1516
|
|
|
1517 header->key_len = u->cache->ctx.key0.len;
|
|
|
1518 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1519 header->key[header->key_len] = LF;
|
|
|
1520 }
|
|
|
1521
|
|
|
1522 #endif
|
|
|
1523
|
|
130
|
1524 p = u->pipe;
|
|
28
|
1525
|
|
|
1526 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1527 p->output_ctx = r;
|
|
|
1528 p->tag = u->output.tag;
|
|
126
|
1529 p->bufs = u->conf->bufs;
|
|
28
|
1530 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1531 p->upstream = u->peer.connection;
|
|
132
|
1532 p->downstream = c;
|
|
28
|
1533 p->pool = r->pool;
|
|
132
|
1534 p->log = c->log;
|
|
126
|
1535
|
|
318
|
1536 p->cachable = u->cachable || u->store;
|
|
28
|
1537
|
|
50
|
1538 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1539 if (p->temp_file == NULL) {
|
|
28
|
1540 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1541 return;
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1545 p->temp_file->file.log = c->log;
|
|
28
|
1546 p->temp_file->path = u->conf->temp_path;
|
|
|
1547 p->temp_file->pool = r->pool;
|
|
126
|
1548
|
|
318
|
1549 if (u->cachable || u->store) {
|
|
28
|
1550 p->temp_file->persistent = 1;
|
|
318
|
1551
|
|
28
|
1552 } else {
|
|
216
|
1553 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1554 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1555 "to a temporary file";
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1559 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1560
|
|
50
|
1561 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1562 if (p->preread_bufs == NULL) {
|
|
28
|
1563 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1564 return;
|
|
|
1565 }
|
|
318
|
1566
|
|
130
|
1567 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1568 p->preread_bufs->next = NULL;
|
|
130
|
1569 u->buffer.recycled = 1;
|
|
|
1570
|
|
|
1571 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1572
|
|
|
1573 if (u->cachable) {
|
|
318
|
1574
|
|
28
|
1575 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1576 if (p->buf_to_file == NULL) {
|
|
|
1577 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1578 return;
|
|
|
1579 }
|
|
318
|
1580
|
|
130
|
1581 p->buf_to_file->pos = u->buffer.start;
|
|
|
1582 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1583 p->buf_to_file->temporary = 1;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1587 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1588 p->single_buf = 1;
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1592 p->free_bufs = 1;
|
|
|
1593
|
|
|
1594 /*
|
|
130
|
1595 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1596 * as though these bytes were read
|
|
|
1597 */
|
|
130
|
1598 u->buffer.last = u->buffer.pos;
|
|
28
|
1599
|
|
|
1600 if (u->conf->cyclic_temp_file) {
|
|
|
1601
|
|
|
1602 /*
|
|
|
1603 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1604 * because the writing a new data may interfere with sendfile()
|
|
|
1605 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1606 */
|
|
|
1607
|
|
|
1608 p->cyclic_temp_file = 1;
|
|
132
|
1609 c->sendfile = 0;
|
|
28
|
1610
|
|
|
1611 } else {
|
|
|
1612 p->cyclic_temp_file = 0;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 p->read_timeout = u->conf->read_timeout;
|
|
|
1616 p->send_timeout = clcf->send_timeout;
|
|
|
1617 p->send_lowat = clcf->send_lowat;
|
|
|
1618
|
|
58
|
1619 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1620 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1621
|
|
|
1622 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1623 }
|
|
|
1624
|
|
|
1625
|
|
36
|
1626 static void
|
|
130
|
1627 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1628 {
|
|
|
1629 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1630 }
|
|
|
1631
|
|
|
1632
|
|
|
1633 static void
|
|
|
1634 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1635 {
|
|
|
1636 size_t size;
|
|
|
1637 ssize_t n;
|
|
|
1638 ngx_buf_t *b;
|
|
132
|
1639 ngx_int_t rc;
|
|
130
|
1640 ngx_uint_t do_write;
|
|
260
|
1641 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1642 ngx_http_request_t *r;
|
|
|
1643 ngx_http_upstream_t *u;
|
|
|
1644 ngx_http_core_loc_conf_t *clcf;
|
|
|
1645
|
|
|
1646 c = ev->data;
|
|
244
|
1647 r = c->data;
|
|
|
1648 u = r->upstream;
|
|
130
|
1649
|
|
|
1650 if (ev->write) {
|
|
|
1651 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1652 "http upstream process non buffered downstream");
|
|
|
1653 c->log->action = "sending to client";
|
|
|
1654
|
|
|
1655 } else {
|
|
|
1656 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1657 "http upstream process non buffered upstream");
|
|
|
1658 c->log->action = "reading upstream";
|
|
|
1659 }
|
|
|
1660
|
|
|
1661 if (ev->timedout) {
|
|
|
1662 if (ev->write) {
|
|
|
1663 c->timedout = 1;
|
|
160
|
1664 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1665
|
|
130
|
1666 } else {
|
|
160
|
1667 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1668 }
|
|
244
|
1669
|
|
|
1670 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1671 return;
|
|
130
|
1672 }
|
|
|
1673
|
|
260
|
1674 downstream = r->connection;
|
|
|
1675 upstream = u->peer.connection;
|
|
130
|
1676
|
|
|
1677 b = &u->buffer;
|
|
|
1678
|
|
|
1679 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1680
|
|
206
|
1681 do_write = ev->write || u->length == 0;
|
|
130
|
1682
|
|
|
1683 for ( ;; ) {
|
|
|
1684
|
|
|
1685 if (do_write) {
|
|
|
1686
|
|
|
1687 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1688 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1689
|
|
260
|
1690 if (downstream->destroyed) {
|
|
132
|
1691 return;
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 if (rc == NGX_ERROR) {
|
|
130
|
1695 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1696 return;
|
|
|
1697 }
|
|
|
1698
|
|
|
1699 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1700 &u->out_bufs, u->output.tag);
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 if (u->busy_bufs == NULL) {
|
|
|
1704
|
|
|
1705 if (u->length == 0
|
|
260
|
1706 || upstream->read->eof
|
|
|
1707 || upstream->read->error)
|
|
130
|
1708 {
|
|
|
1709 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1710 return;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 b->pos = b->start;
|
|
|
1714 b->last = b->start;
|
|
|
1715 }
|
|
|
1716 }
|
|
|
1717
|
|
|
1718 size = b->end - b->last;
|
|
|
1719
|
|
|
1720 if (size > u->length) {
|
|
|
1721 size = u->length;
|
|
|
1722 }
|
|
|
1723
|
|
260
|
1724 if (size && upstream->read->ready) {
|
|
|
1725
|
|
|
1726 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1727
|
|
|
1728 if (n == NGX_AGAIN) {
|
|
|
1729 break;
|
|
|
1730 }
|
|
|
1731
|
|
|
1732 if (n > 0) {
|
|
|
1733 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1734 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1735 return;
|
|
|
1736 }
|
|
|
1737 }
|
|
|
1738
|
|
|
1739 do_write = 1;
|
|
|
1740
|
|
|
1741 continue;
|
|
|
1742 }
|
|
|
1743
|
|
|
1744 break;
|
|
|
1745 }
|
|
|
1746
|
|
260
|
1747 if (downstream->data == r) {
|
|
|
1748 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1749 == NGX_ERROR)
|
|
|
1750 {
|
|
|
1751 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1752 return;
|
|
|
1753 }
|
|
130
|
1754 }
|
|
|
1755
|
|
276
|
1756 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1757 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1758
|
|
|
1759 } else if (downstream->write->timer_set) {
|
|
|
1760 ngx_del_timer(downstream->write);
|
|
130
|
1761 }
|
|
|
1762
|
|
260
|
1763 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1764 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1765 return;
|
|
|
1766 }
|
|
|
1767
|
|
276
|
1768 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1769 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1770
|
|
|
1771 } else if (upstream->read->timer_set) {
|
|
|
1772 ngx_del_timer(upstream->read);
|
|
130
|
1773 }
|
|
|
1774 }
|
|
|
1775
|
|
|
1776
|
|
|
1777 static ngx_int_t
|
|
|
1778 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1779 {
|
|
|
1780 return NGX_OK;
|
|
|
1781 }
|
|
|
1782
|
|
|
1783
|
|
|
1784 static ngx_int_t
|
|
|
1785 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1786 {
|
|
|
1787 ngx_http_request_t *r = data;
|
|
|
1788
|
|
|
1789 ngx_buf_t *b;
|
|
|
1790 ngx_chain_t *cl, **ll;
|
|
|
1791 ngx_http_upstream_t *u;
|
|
|
1792
|
|
|
1793 u = r->upstream;
|
|
|
1794
|
|
|
1795 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1796 ll = &cl->next;
|
|
|
1797 }
|
|
|
1798
|
|
|
1799 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1800 if (cl == NULL) {
|
|
|
1801 return NGX_ERROR;
|
|
|
1802 }
|
|
|
1803
|
|
|
1804 *ll = cl;
|
|
|
1805
|
|
|
1806 cl->buf->flush = 1;
|
|
|
1807 cl->buf->memory = 1;
|
|
|
1808
|
|
|
1809 b = &u->buffer;
|
|
|
1810
|
|
|
1811 cl->buf->pos = b->last;
|
|
|
1812 b->last += bytes;
|
|
|
1813 cl->buf->last = b->last;
|
|
|
1814
|
|
|
1815 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1816 return NGX_OK;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 u->length -= bytes;
|
|
|
1820
|
|
|
1821 return NGX_OK;
|
|
|
1822 }
|
|
|
1823
|
|
|
1824
|
|
|
1825 static void
|
|
58
|
1826 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1827 {
|
|
|
1828 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1829 }
|
|
|
1830
|
|
|
1831
|
|
|
1832 static void
|
|
36
|
1833 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1834 {
|
|
58
|
1835 ngx_event_pipe_t *p;
|
|
132
|
1836 ngx_connection_t *c, *downstream;
|
|
284
|
1837 ngx_http_log_ctx_t *ctx;
|
|
28
|
1838 ngx_http_request_t *r;
|
|
|
1839 ngx_http_upstream_t *u;
|
|
|
1840
|
|
|
1841 c = ev->data;
|
|
|
1842 r = c->data;
|
|
|
1843 u = r->upstream;
|
|
132
|
1844 downstream = r->connection;
|
|
28
|
1845
|
|
|
1846 if (ev->write) {
|
|
32
|
1847 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1848 "http upstream process downstream");
|
|
|
1849 c->log->action = "sending to client";
|
|
126
|
1850
|
|
28
|
1851 } else {
|
|
32
|
1852 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1853 "http upstream process upstream");
|
|
|
1854 c->log->action = "reading upstream";
|
|
284
|
1855
|
|
|
1856 ctx = c->log->data;
|
|
|
1857 ctx->current_request = r;
|
|
28
|
1858 }
|
|
126
|
1859
|
|
130
|
1860 p = u->pipe;
|
|
28
|
1861
|
|
|
1862 if (ev->timedout) {
|
|
|
1863 if (ev->write) {
|
|
76
|
1864 if (ev->delayed) {
|
|
|
1865
|
|
|
1866 ev->timedout = 0;
|
|
|
1867 ev->delayed = 0;
|
|
|
1868
|
|
|
1869 if (!ev->ready) {
|
|
|
1870 ngx_add_timer(ev, p->send_timeout);
|
|
|
1871
|
|
|
1872 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1873 {
|
|
|
1874 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1875 return;
|
|
|
1876 }
|
|
|
1877
|
|
|
1878 return;
|
|
|
1879 }
|
|
|
1880
|
|
|
1881 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1882
|
|
|
1883 if (downstream->destroyed) {
|
|
|
1884 return;
|
|
|
1885 }
|
|
|
1886
|
|
76
|
1887 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1888 return;
|
|
|
1889 }
|
|
|
1890
|
|
|
1891 } else {
|
|
|
1892 p->downstream_error = 1;
|
|
126
|
1893 c->timedout = 1;
|
|
160
|
1894 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1895 }
|
|
28
|
1896
|
|
|
1897 } else {
|
|
126
|
1898 p->upstream_error = 1;
|
|
160
|
1899 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1900 }
|
|
|
1901
|
|
|
1902 } else {
|
|
76
|
1903 if (ev->write && ev->delayed) {
|
|
|
1904 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1905 "http downstream delayed");
|
|
|
1906
|
|
|
1907 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1908 return;
|
|
|
1909 }
|
|
|
1910
|
|
|
1911 return;
|
|
|
1912 }
|
|
|
1913
|
|
28
|
1914 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1915
|
|
|
1916 if (downstream->destroyed) {
|
|
|
1917 return;
|
|
|
1918 }
|
|
|
1919
|
|
28
|
1920 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1921 return;
|
|
|
1922 }
|
|
|
1923 }
|
|
126
|
1924
|
|
28
|
1925 if (u->peer.connection) {
|
|
|
1926
|
|
318
|
1927 if (u->store) {
|
|
|
1928
|
|
|
1929 if (p->upstream_eof && u->headers_in.status_n == NGX_HTTP_OK) {
|
|
|
1930
|
|
|
1931 ngx_http_upstream_store(r, u);
|
|
|
1932
|
|
|
1933 } else if ((p->upstream_error
|
|
|
1934 || (p->upstream_eof
|
|
|
1935 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
|
1936 && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
|
|
|
1937 {
|
|
|
1938 if (ngx_delete_file(u->pipe->temp_file->file.name.data)
|
|
|
1939 == NGX_FILE_ERROR)
|
|
|
1940 {
|
|
|
1941 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
1942 ngx_delete_file_n " \"%s\" failed",
|
|
|
1943 u->pipe->temp_file->file.name.data);
|
|
|
1944 }
|
|
|
1945 }
|
|
|
1946 }
|
|
|
1947
|
|
28
|
1948 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1949
|
|
|
1950 if (p->upstream_done && u->cachable) {
|
|
|
1951 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1952 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1953 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1954 return;
|
|
|
1955 }
|
|
|
1956
|
|
|
1957 } else if (p->upstream_eof && u->cachable) {
|
|
|
1958
|
|
|
1959 /* TODO: check length & update cache */
|
|
|
1960
|
|
|
1961 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1962 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1963 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1964 return;
|
|
|
1965 }
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 #endif
|
|
|
1969
|
|
|
1970 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1971 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1972 "http upstream exit: %p", p->out);
|
|
28
|
1973 #if 0
|
|
|
1974 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1975 #endif
|
|
|
1976 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1977 return;
|
|
|
1978 }
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 if (p->downstream_error) {
|
|
32
|
1982 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1983 "http upstream downstream error");
|
|
28
|
1984
|
|
|
1985 if (!u->cachable && u->peer.connection) {
|
|
|
1986 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1987 }
|
|
|
1988 }
|
|
|
1989 }
|
|
|
1990
|
|
|
1991
|
|
36
|
1992 static void
|
|
318
|
1993 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1994 {
|
|
|
1995 char *failed;
|
|
|
1996 u_char *name;
|
|
|
1997 size_t root;
|
|
|
1998 time_t lm;
|
|
|
1999 ngx_err_t err;
|
|
|
2000 ngx_str_t *temp, path, *last_modified;
|
|
|
2001 ngx_temp_file_t *tf;
|
|
|
2002
|
|
|
2003 if (u->pipe->temp_file->file.fd == NGX_INVALID_FILE) {
|
|
|
2004
|
|
|
2005 /* create file for empty 200 response */
|
|
|
2006
|
|
|
2007 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2008 if (tf == NULL) {
|
|
|
2009 return;
|
|
|
2010 }
|
|
|
2011
|
|
|
2012 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2013 tf->file.log = r->connection->log;
|
|
|
2014 tf->path = u->conf->temp_path;
|
|
|
2015 tf->pool = r->pool;
|
|
|
2016 tf->persistent = 1;
|
|
|
2017
|
|
|
2018 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2019 tf->persistent, tf->clean, tf->access)
|
|
|
2020 != NGX_OK)
|
|
|
2021 {
|
|
|
2022 return;
|
|
|
2023 }
|
|
|
2024
|
|
|
2025 u->pipe->temp_file = tf;
|
|
|
2026 }
|
|
|
2027
|
|
|
2028 temp = &u->pipe->temp_file->file.name;
|
|
|
2029
|
|
|
2030 #if !(NGX_WIN32)
|
|
|
2031
|
|
320
|
2032 if (ngx_change_file_access(temp->data, u->conf->store_access)
|
|
|
2033 == NGX_FILE_ERROR)
|
|
|
2034 {
|
|
318
|
2035 err = ngx_errno;
|
|
|
2036 failed = ngx_change_file_access_n;
|
|
|
2037 name = temp->data;
|
|
|
2038
|
|
|
2039 goto failed;
|
|
|
2040 }
|
|
|
2041
|
|
|
2042 #endif
|
|
|
2043
|
|
|
2044 if (r->upstream->headers_in.last_modified) {
|
|
|
2045
|
|
|
2046 last_modified = &r->upstream->headers_in.last_modified->value;
|
|
|
2047
|
|
|
2048 lm = ngx_http_parse_time(last_modified->data, last_modified->len);
|
|
|
2049
|
|
|
2050 if (lm != NGX_ERROR) {
|
|
|
2051 if (ngx_set_file_time(temp->data, u->pipe->temp_file->file.fd, lm)
|
|
|
2052 != NGX_OK)
|
|
|
2053 {
|
|
|
2054 err = ngx_errno;
|
|
|
2055 failed = ngx_set_file_time_n;
|
|
|
2056 name = temp->data;
|
|
320
|
2057
|
|
318
|
2058 goto failed;
|
|
|
2059 }
|
|
|
2060 }
|
|
|
2061 }
|
|
|
2062
|
|
320
|
2063 if (u->conf->store_lengths == NULL) {
|
|
|
2064
|
|
|
2065 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2066
|
|
|
2067 } else {
|
|
|
2068 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2069 u->conf->store_values->elts)
|
|
|
2070 == NULL)
|
|
|
2071 {
|
|
|
2072 return;
|
|
|
2073 }
|
|
|
2074 }
|
|
318
|
2075
|
|
|
2076 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2077 "upstream stores \"%s\" to \"%s\"", temp->data, path.data);
|
|
|
2078
|
|
|
2079 failed = ngx_rename_file_n;
|
|
|
2080 name = path.data;
|
|
|
2081
|
|
|
2082 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2083 return;
|
|
|
2084 }
|
|
|
2085
|
|
|
2086 err = ngx_errno;
|
|
|
2087
|
|
|
2088 if (err == NGX_ENOENT) {
|
|
|
2089
|
|
320
|
2090 err = ngx_create_full_path(path.data,
|
|
|
2091 ngx_dir_access(u->conf->store_access));
|
|
318
|
2092 if (err == 0) {
|
|
|
2093 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2094 return;
|
|
|
2095 }
|
|
|
2096
|
|
|
2097 err = ngx_errno;
|
|
|
2098 }
|
|
|
2099 }
|
|
|
2100
|
|
|
2101 #if (NGX_WIN32)
|
|
|
2102
|
|
|
2103 if (err == NGX_EEXIST) {
|
|
|
2104 if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
|
|
|
2105
|
|
|
2106 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2107 return;
|
|
|
2108 }
|
|
|
2109 }
|
|
|
2110
|
|
|
2111 err = ngx_errno;
|
|
|
2112 }
|
|
|
2113
|
|
|
2114 #endif
|
|
|
2115
|
|
|
2116 failed:
|
|
|
2117
|
|
|
2118 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
|
|
|
2119 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2120 ngx_delete_file_n " \"%s\" failed",
|
|
|
2121 temp->data);
|
|
|
2122 }
|
|
|
2123
|
|
|
2124 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
|
|
|
2125 "%s \"%s\" failed", failed, name);
|
|
|
2126 }
|
|
|
2127
|
|
|
2128
|
|
|
2129 static void
|
|
36
|
2130 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2131 {
|
|
|
2132 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2133 "http upstream dummy handler");
|
|
|
2134 }
|
|
|
2135
|
|
|
2136
|
|
36
|
2137 static void
|
|
|
2138 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2139 ngx_uint_t ft_type)
|
|
28
|
2140 {
|
|
260
|
2141 ngx_uint_t status, state;
|
|
28
|
2142
|
|
|
2143 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2144 "http next upstream, %xi", ft_type);
|
|
28
|
2145
|
|
|
2146 #if 0
|
|
|
2147 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2148 #endif
|
|
|
2149
|
|
74
|
2150 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2151 state = NGX_PEER_NEXT;
|
|
74
|
2152 } else {
|
|
260
|
2153 state = NGX_PEER_FAILED;
|
|
28
|
2154 }
|
|
74
|
2155
|
|
260
|
2156 u->peer.free(&u->peer, u->peer.data, state);
|
|
74
|
2157
|
|
28
|
2158 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2159 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2160 "upstream timed out");
|
|
|
2161 }
|
|
126
|
2162
|
|
28
|
2163 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2164 status = 0;
|
|
|
2165
|
|
|
2166 } else {
|
|
|
2167 switch(ft_type) {
|
|
|
2168
|
|
|
2169 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2170 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2171 break;
|
|
|
2172
|
|
|
2173 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2174 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2175 break;
|
|
|
2176
|
|
|
2177 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2178 status = NGX_HTTP_NOT_FOUND;
|
|
|
2179 break;
|
|
|
2180
|
|
|
2181 /*
|
|
|
2182 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2183 * never reach here
|
|
|
2184 */
|
|
|
2185
|
|
|
2186 default:
|
|
|
2187 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2188 }
|
|
|
2189 }
|
|
|
2190
|
|
132
|
2191 if (r->connection->error) {
|
|
28
|
2192 ngx_http_upstream_finalize_request(r, u,
|
|
|
2193 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2194 return;
|
|
|
2195 }
|
|
|
2196
|
|
|
2197 if (status) {
|
|
|
2198 u->state->status = status;
|
|
|
2199
|
|
74
|
2200 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2201
|
|
|
2202 #if (NGX_HTTP_CACHE)
|
|
|
2203
|
|
|
2204 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2205 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2206 ngx_http_send_cached_response(r));
|
|
28
|
2207 return;
|
|
|
2208 }
|
|
|
2209
|
|
|
2210 #endif
|
|
|
2211
|
|
|
2212 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2213 return;
|
|
|
2214 }
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 if (u->peer.connection) {
|
|
|
2218 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2219 "close http upstream connection: %d",
|
|
|
2220 u->peer.connection->fd);
|
|
126
|
2221 #if (NGX_HTTP_SSL)
|
|
260
|
2222
|
|
126
|
2223 if (u->peer.connection->ssl) {
|
|
260
|
2224 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2225 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2226
|
|
|
2227 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2228 }
|
|
|
2229 #endif
|
|
260
|
2230
|
|
28
|
2231 ngx_close_connection(u->peer.connection);
|
|
|
2232 }
|
|
|
2233
|
|
|
2234 #if 0
|
|
|
2235 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2236 ngx_http_upstream_busy_lock(p);
|
|
|
2237 return;
|
|
|
2238 }
|
|
|
2239 #endif
|
|
|
2240
|
|
|
2241 ngx_http_upstream_connect(r, u);
|
|
|
2242 }
|
|
|
2243
|
|
|
2244
|
|
36
|
2245 static void
|
|
118
|
2246 ngx_http_upstream_cleanup(void *data)
|
|
|
2247 {
|
|
|
2248 ngx_http_request_t *r = data;
|
|
|
2249
|
|
|
2250 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2251 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2252
|
|
|
2253 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2254 }
|
|
|
2255
|
|
|
2256
|
|
|
2257 static void
|
|
36
|
2258 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2259 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2260 {
|
|
262
|
2261 ngx_time_t *tp;
|
|
112
|
2262
|
|
32
|
2263 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2264 "finalize http upstream request: %i", rc);
|
|
28
|
2265
|
|
118
|
2266 *u->cleanup = NULL;
|
|
|
2267
|
|
262
|
2268 if (u->state->response_sec) {
|
|
112
|
2269 tp = ngx_timeofday();
|
|
262
|
2270 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2271 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2272 }
|
|
|
2273
|
|
28
|
2274 u->finalize_request(r, rc);
|
|
|
2275
|
|
260
|
2276 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2277
|
|
28
|
2278 if (u->peer.connection) {
|
|
260
|
2279
|
|
126
|
2280 #if (NGX_HTTP_SSL)
|
|
|
2281
|
|
|
2282 /* TODO: do not shutdown persistent connection */
|
|
|
2283
|
|
|
2284 if (u->peer.connection->ssl) {
|
|
260
|
2285
|
|
|
2286 /*
|
|
|
2287 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2288 * and do not wait its "close notify" shutdown alert.
|
|
|
2289 * It is acceptable according to the TLS standard.
|
|
|
2290 */
|
|
|
2291
|
|
|
2292 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2293
|
|
|
2294 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2295 }
|
|
|
2296 #endif
|
|
260
|
2297
|
|
|
2298 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2299 "close http upstream connection: %d",
|
|
|
2300 u->peer.connection->fd);
|
|
|
2301
|
|
28
|
2302 ngx_close_connection(u->peer.connection);
|
|
|
2303 }
|
|
|
2304
|
|
32
|
2305 u->peer.connection = NULL;
|
|
|
2306
|
|
112
|
2307 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2308 {
|
|
|
2309 rc = 0;
|
|
|
2310 }
|
|
|
2311
|
|
130
|
2312 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2313 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2314 "http upstream temp fd: %d",
|
|
130
|
2315 u->pipe->temp_file->file.fd);
|
|
28
|
2316 }
|
|
|
2317
|
|
|
2318 #if 0
|
|
|
2319 if (u->cache) {
|
|
|
2320 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2321 "http upstream cache fd: %d",
|
|
28
|
2322 u->cache->ctx.file.fd);
|
|
|
2323 }
|
|
|
2324 #endif
|
|
|
2325
|
|
64
|
2326 if (rc == NGX_DECLINED) {
|
|
|
2327 return;
|
|
|
2328 }
|
|
|
2329
|
|
32
|
2330 r->connection->log->action = "sending to client";
|
|
|
2331
|
|
314
|
2332 if (rc == 0) {
|
|
|
2333 if (r == r->main) {
|
|
|
2334 if (!r->post_action) {
|
|
|
2335 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
|
2336 }
|
|
|
2337
|
|
|
2338 } else {
|
|
|
2339 if (r->out) {
|
|
|
2340 rc = NGX_AGAIN;
|
|
|
2341 }
|
|
|
2342 }
|
|
28
|
2343 }
|
|
|
2344
|
|
|
2345 ngx_http_finalize_request(r, rc);
|
|
|
2346 }
|
|
|
2347
|
|
|
2348
|
|
58
|
2349 static ngx_int_t
|
|
|
2350 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2351 ngx_uint_t offset)
|
|
126
|
2352 {
|
|
58
|
2353 ngx_table_elt_t **ph;
|
|
126
|
2354
|
|
58
|
2355 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2356
|
|
|
2357 if (*ph == NULL) {
|
|
|
2358 *ph = h;
|
|
|
2359 }
|
|
|
2360
|
|
|
2361 return NGX_OK;
|
|
|
2362 }
|
|
|
2363
|
|
|
2364
|
|
|
2365 static ngx_int_t
|
|
|
2366 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2367 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2368 {
|
|
|
2369 ngx_array_t *pa;
|
|
|
2370 ngx_table_elt_t **ph;
|
|
|
2371
|
|
|
2372 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2373
|
|
|
2374 if (pa->elts == NULL) {
|
|
|
2375 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2376 {
|
|
|
2377 return NGX_ERROR;
|
|
|
2378 }
|
|
|
2379 }
|
|
|
2380
|
|
|
2381 ph = ngx_array_push(pa);
|
|
|
2382 if (ph == NULL) {
|
|
|
2383 return NGX_ERROR;
|
|
|
2384 }
|
|
|
2385
|
|
|
2386 *ph = h;
|
|
|
2387
|
|
|
2388 return NGX_OK;
|
|
|
2389 }
|
|
|
2390
|
|
|
2391
|
|
|
2392 static ngx_int_t
|
|
|
2393 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2394 ngx_uint_t offset)
|
|
|
2395 {
|
|
|
2396 return NGX_OK;
|
|
|
2397 }
|
|
|
2398
|
|
|
2399
|
|
|
2400 static ngx_int_t
|
|
76
|
2401 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2402 ngx_uint_t offset)
|
|
126
|
2403 {
|
|
76
|
2404 ngx_int_t n;
|
|
|
2405
|
|
|
2406 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2407
|
|
|
2408 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2409
|
|
|
2410 if (n != NGX_ERROR) {
|
|
|
2411 r->limit_rate = (size_t) n;
|
|
|
2412 }
|
|
|
2413
|
|
|
2414 return NGX_OK;
|
|
|
2415 }
|
|
|
2416
|
|
|
2417
|
|
|
2418 static ngx_int_t
|
|
198
|
2419 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2420 ngx_uint_t offset)
|
|
|
2421 {
|
|
|
2422 u_char c0, c1, c2;
|
|
|
2423
|
|
|
2424 if (r->upstream->conf->change_buffering) {
|
|
|
2425
|
|
|
2426 if (h->value.len == 2) {
|
|
|
2427 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2428 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2429
|
|
|
2430 if (c0 == 'n' && c1 == 'o') {
|
|
|
2431 r->upstream->buffering = 0;
|
|
|
2432 }
|
|
|
2433
|
|
|
2434 } else if (h->value.len == 3) {
|
|
|
2435 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2436 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2437 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2438
|
|
|
2439 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2440 r->upstream->buffering = 1;
|
|
|
2441 }
|
|
|
2442 }
|
|
|
2443 }
|
|
|
2444
|
|
|
2445 return NGX_OK;
|
|
|
2446 }
|
|
|
2447
|
|
|
2448
|
|
|
2449 static ngx_int_t
|
|
206
|
2450 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2451 ngx_uint_t offset)
|
|
|
2452 {
|
|
|
2453 r->headers_out.override_charset = &h->value;
|
|
|
2454
|
|
|
2455 return NGX_OK;
|
|
|
2456 }
|
|
|
2457
|
|
|
2458
|
|
|
2459 static ngx_int_t
|
|
58
|
2460 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2461 ngx_uint_t offset)
|
|
|
2462 {
|
|
122
|
2463 ngx_table_elt_t *ho, **ph;
|
|
58
|
2464
|
|
|
2465 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2466 if (ho == NULL) {
|
|
|
2467 return NGX_ERROR;
|
|
|
2468 }
|
|
|
2469
|
|
|
2470 *ho = *h;
|
|
|
2471
|
|
122
|
2472 if (offset) {
|
|
|
2473 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2474 *ph = ho;
|
|
|
2475 }
|
|
|
2476
|
|
58
|
2477 return NGX_OK;
|
|
|
2478 }
|
|
|
2479
|
|
|
2480
|
|
|
2481 static ngx_int_t
|
|
|
2482 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2483 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2484 {
|
|
|
2485 ngx_array_t *pa;
|
|
|
2486 ngx_table_elt_t *ho, **ph;
|
|
|
2487
|
|
|
2488 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2489
|
|
|
2490 if (pa->elts == NULL) {
|
|
|
2491 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2492 {
|
|
|
2493 return NGX_ERROR;
|
|
|
2494 }
|
|
|
2495 }
|
|
|
2496
|
|
|
2497 ph = ngx_array_push(pa);
|
|
|
2498 if (ph == NULL) {
|
|
|
2499 return NGX_ERROR;
|
|
|
2500 }
|
|
|
2501
|
|
|
2502 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2503 if (ho == NULL) {
|
|
|
2504 return NGX_ERROR;
|
|
|
2505 }
|
|
|
2506
|
|
|
2507 *ho = *h;
|
|
|
2508 *ph = ho;
|
|
|
2509
|
|
|
2510 return NGX_OK;
|
|
|
2511 }
|
|
|
2512
|
|
|
2513
|
|
|
2514 static ngx_int_t
|
|
|
2515 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2516 ngx_uint_t offset)
|
|
|
2517 {
|
|
206
|
2518 u_char *p, *last;
|
|
|
2519
|
|
|
2520 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2521 r->headers_out.content_type = h->value;
|
|
|
2522
|
|
206
|
2523 for (p = h->value.data; *p; p++) {
|
|
|
2524
|
|
|
2525 if (*p != ';') {
|
|
|
2526 continue;
|
|
|
2527 }
|
|
|
2528
|
|
|
2529 last = p;
|
|
|
2530
|
|
|
2531 while (*++p == ' ') { /* void */ }
|
|
|
2532
|
|
286
|
2533 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2534 continue;
|
|
|
2535 }
|
|
|
2536
|
|
|
2537 p += 8;
|
|
|
2538
|
|
|
2539 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2540
|
|
|
2541 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2542 r->headers_out.charset.data = p;
|
|
292
|
2543
|
|
|
2544 return NGX_OK;
|
|
206
|
2545 }
|
|
|
2546
|
|
58
|
2547 return NGX_OK;
|
|
|
2548 }
|
|
|
2549
|
|
|
2550
|
|
|
2551 static ngx_int_t
|
|
|
2552 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2553 ngx_uint_t offset)
|
|
|
2554 {
|
|
|
2555 ngx_table_elt_t *ho;
|
|
|
2556
|
|
|
2557 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2558 if (ho == NULL) {
|
|
|
2559 return NGX_ERROR;
|
|
|
2560 }
|
|
|
2561
|
|
|
2562 *ho = *h;
|
|
|
2563
|
|
|
2564 r->headers_out.content_length = ho;
|
|
|
2565 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2566
|
|
|
2567 return NGX_OK;
|
|
|
2568 }
|
|
|
2569
|
|
|
2570
|
|
|
2571 static ngx_int_t
|
|
|
2572 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2573 ngx_uint_t offset)
|
|
|
2574 {
|
|
|
2575 ngx_int_t rc;
|
|
|
2576 ngx_table_elt_t *ho;
|
|
|
2577
|
|
|
2578 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2579 if (ho == NULL) {
|
|
|
2580 return NGX_ERROR;
|
|
|
2581 }
|
|
|
2582
|
|
|
2583 *ho = *h;
|
|
|
2584
|
|
|
2585 if (r->upstream->rewrite_redirect) {
|
|
|
2586 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2587
|
|
78
|
2588 if (rc == NGX_DECLINED) {
|
|
|
2589 return NGX_OK;
|
|
|
2590 }
|
|
|
2591
|
|
58
|
2592 if (rc == NGX_OK) {
|
|
|
2593 r->headers_out.location = ho;
|
|
|
2594
|
|
|
2595 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2596 "rewritten location: \"%V\"", &ho->value);
|
|
|
2597 }
|
|
|
2598
|
|
|
2599 return rc;
|
|
|
2600 }
|
|
|
2601
|
|
|
2602 /*
|
|
|
2603 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2604 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2605 */
|
|
|
2606
|
|
|
2607 return NGX_OK;
|
|
|
2608 }
|
|
|
2609
|
|
|
2610
|
|
|
2611 static ngx_int_t
|
|
|
2612 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2613 ngx_uint_t offset)
|
|
|
2614 {
|
|
|
2615 u_char *p;
|
|
|
2616 ngx_int_t rc;
|
|
|
2617 ngx_table_elt_t *ho;
|
|
|
2618
|
|
|
2619 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2620 if (ho == NULL) {
|
|
|
2621 return NGX_ERROR;
|
|
|
2622 }
|
|
|
2623
|
|
|
2624 *ho = *h;
|
|
|
2625
|
|
|
2626 if (r->upstream->rewrite_redirect) {
|
|
|
2627
|
|
|
2628 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2629
|
|
|
2630 if (p) {
|
|
|
2631 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2632
|
|
|
2633 } else {
|
|
|
2634 return NGX_OK;
|
|
|
2635 }
|
|
|
2636
|
|
78
|
2637 if (rc == NGX_DECLINED) {
|
|
|
2638 return NGX_OK;
|
|
|
2639 }
|
|
|
2640
|
|
58
|
2641 #if (NGX_DEBUG)
|
|
|
2642 if (rc == NGX_OK) {
|
|
|
2643 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2644 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2645 }
|
|
|
2646 #endif
|
|
|
2647
|
|
|
2648 return rc;
|
|
|
2649 }
|
|
|
2650
|
|
|
2651 return NGX_OK;
|
|
|
2652 }
|
|
|
2653
|
|
|
2654
|
|
|
2655 #if (NGX_HTTP_GZIP)
|
|
|
2656
|
|
|
2657 static ngx_int_t
|
|
|
2658 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2659 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2660 {
|
|
|
2661 ngx_table_elt_t *ho;
|
|
|
2662
|
|
|
2663 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2664 if (ho == NULL) {
|
|
|
2665 return NGX_ERROR;
|
|
|
2666 }
|
|
|
2667
|
|
|
2668 *ho = *h;
|
|
|
2669
|
|
|
2670 r->headers_out.content_encoding = ho;
|
|
|
2671
|
|
|
2672 return NGX_OK;
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 #endif
|
|
|
2676
|
|
|
2677
|
|
36
|
2678 static ngx_int_t
|
|
122
|
2679 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2680 {
|
|
260
|
2681 ngx_http_variable_t *var, *v;
|
|
28
|
2682
|
|
122
|
2683 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2684 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2685 if (var == NULL) {
|
|
|
2686 return NGX_ERROR;
|
|
|
2687 }
|
|
|
2688
|
|
186
|
2689 var->get_handler = v->get_handler;
|
|
122
|
2690 var->data = v->data;
|
|
|
2691 }
|
|
|
2692
|
|
28
|
2693 return NGX_OK;
|
|
|
2694 }
|
|
58
|
2695
|
|
|
2696
|
|
122
|
2697 static ngx_int_t
|
|
298
|
2698 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2699 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2700 {
|
|
|
2701 u_char *p;
|
|
|
2702 size_t len;
|
|
|
2703 ngx_uint_t i;
|
|
|
2704 ngx_http_upstream_state_t *state;
|
|
|
2705
|
|
|
2706 v->valid = 1;
|
|
|
2707 v->no_cachable = 0;
|
|
|
2708 v->not_found = 0;
|
|
|
2709
|
|
|
2710 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2711 v->not_found = 1;
|
|
|
2712 return NGX_OK;
|
|
|
2713 }
|
|
|
2714
|
|
|
2715 len = 0;
|
|
|
2716 state = r->upstream_states->elts;
|
|
|
2717
|
|
|
2718 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2719 if (state[i].peer) {
|
|
|
2720 len += state[i].peer->len + 2;
|
|
|
2721
|
|
|
2722 } else {
|
|
|
2723 len += 3;
|
|
|
2724 }
|
|
|
2725 }
|
|
|
2726
|
|
|
2727 p = ngx_palloc(r->pool, len);
|
|
|
2728 if (p == NULL) {
|
|
|
2729 return NGX_ERROR;
|
|
|
2730 }
|
|
|
2731
|
|
|
2732 v->data = p;
|
|
|
2733
|
|
|
2734 i = 0;
|
|
|
2735
|
|
|
2736 for ( ;; ) {
|
|
|
2737 if (state[i].peer) {
|
|
|
2738 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2739 }
|
|
|
2740
|
|
|
2741 if (++i == r->upstream_states->nelts) {
|
|
|
2742 break;
|
|
|
2743 }
|
|
|
2744
|
|
|
2745 if (state[i].peer) {
|
|
|
2746 *p++ = ',';
|
|
|
2747 *p++ = ' ';
|
|
|
2748
|
|
|
2749 } else {
|
|
|
2750 *p++ = ' ';
|
|
|
2751 *p++ = ':';
|
|
|
2752 *p++ = ' ';
|
|
|
2753
|
|
|
2754 if (++i == r->upstream_states->nelts) {
|
|
|
2755 break;
|
|
|
2756 }
|
|
|
2757
|
|
|
2758 continue;
|
|
|
2759 }
|
|
|
2760 }
|
|
|
2761
|
|
|
2762 v->len = p - v->data;
|
|
|
2763
|
|
|
2764 return NGX_OK;
|
|
|
2765 }
|
|
|
2766
|
|
|
2767
|
|
|
2768 static ngx_int_t
|
|
122
|
2769 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2770 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2771 {
|
|
|
2772 u_char *p;
|
|
|
2773 size_t len;
|
|
|
2774 ngx_uint_t i;
|
|
|
2775 ngx_http_upstream_state_t *state;
|
|
|
2776
|
|
|
2777 v->valid = 1;
|
|
|
2778 v->no_cachable = 0;
|
|
|
2779 v->not_found = 0;
|
|
|
2780
|
|
296
|
2781 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2782 v->not_found = 1;
|
|
|
2783 return NGX_OK;
|
|
|
2784 }
|
|
|
2785
|
|
296
|
2786 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2787
|
|
|
2788 p = ngx_palloc(r->pool, len);
|
|
|
2789 if (p == NULL) {
|
|
|
2790 return NGX_ERROR;
|
|
|
2791 }
|
|
|
2792
|
|
|
2793 v->data = p;
|
|
|
2794
|
|
|
2795 i = 0;
|
|
296
|
2796 state = r->upstream_states->elts;
|
|
122
|
2797
|
|
|
2798 for ( ;; ) {
|
|
296
|
2799 if (state[i].status) {
|
|
|
2800 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2801
|
|
|
2802 } else {
|
|
296
|
2803 *p++ = '-';
|
|
122
|
2804 }
|
|
|
2805
|
|
296
|
2806 if (++i == r->upstream_states->nelts) {
|
|
122
|
2807 break;
|
|
|
2808 }
|
|
|
2809
|
|
296
|
2810 if (state[i].peer) {
|
|
|
2811 *p++ = ',';
|
|
|
2812 *p++ = ' ';
|
|
|
2813
|
|
|
2814 } else {
|
|
|
2815 *p++ = ' ';
|
|
|
2816 *p++ = ':';
|
|
|
2817 *p++ = ' ';
|
|
|
2818
|
|
|
2819 if (++i == r->upstream_states->nelts) {
|
|
|
2820 break;
|
|
|
2821 }
|
|
|
2822
|
|
|
2823 continue;
|
|
|
2824 }
|
|
122
|
2825 }
|
|
|
2826
|
|
|
2827 v->len = p - v->data;
|
|
|
2828
|
|
|
2829 return NGX_OK;
|
|
|
2830 }
|
|
|
2831
|
|
|
2832
|
|
|
2833 static ngx_int_t
|
|
|
2834 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2835 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2836 {
|
|
|
2837 u_char *p;
|
|
|
2838 size_t len;
|
|
|
2839 ngx_uint_t i;
|
|
262
|
2840 ngx_msec_int_t ms;
|
|
122
|
2841 ngx_http_upstream_state_t *state;
|
|
|
2842
|
|
|
2843 v->valid = 1;
|
|
|
2844 v->no_cachable = 0;
|
|
|
2845 v->not_found = 0;
|
|
|
2846
|
|
296
|
2847 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2848 v->not_found = 1;
|
|
|
2849 return NGX_OK;
|
|
|
2850 }
|
|
|
2851
|
|
296
|
2852 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
2853
|
|
|
2854 p = ngx_palloc(r->pool, len);
|
|
|
2855 if (p == NULL) {
|
|
|
2856 return NGX_ERROR;
|
|
|
2857 }
|
|
|
2858
|
|
|
2859 v->data = p;
|
|
|
2860
|
|
|
2861 i = 0;
|
|
296
|
2862 state = r->upstream_states->elts;
|
|
122
|
2863
|
|
|
2864 for ( ;; ) {
|
|
296
|
2865 if (state[i].status) {
|
|
262
|
2866 ms = state[i].response_sec * 1000 + state[i].response_msec;
|
|
|
2867 ms = (ms >= 0) ? ms : 0;
|
|
|
2868 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
2869
|
|
|
2870 } else {
|
|
|
2871 *p++ = '-';
|
|
122
|
2872 }
|
|
|
2873
|
|
296
|
2874 if (++i == r->upstream_states->nelts) {
|
|
122
|
2875 break;
|
|
|
2876 }
|
|
|
2877
|
|
296
|
2878 if (state[i].peer) {
|
|
|
2879 *p++ = ',';
|
|
|
2880 *p++ = ' ';
|
|
|
2881
|
|
|
2882 } else {
|
|
|
2883 *p++ = ' ';
|
|
|
2884 *p++ = ':';
|
|
|
2885 *p++ = ' ';
|
|
|
2886
|
|
|
2887 if (++i == r->upstream_states->nelts) {
|
|
|
2888 break;
|
|
|
2889 }
|
|
|
2890
|
|
|
2891 continue;
|
|
|
2892 }
|
|
122
|
2893 }
|
|
|
2894
|
|
|
2895 v->len = p - v->data;
|
|
|
2896
|
|
|
2897 return NGX_OK;
|
|
|
2898 }
|
|
|
2899
|
|
|
2900
|
|
296
|
2901 ngx_int_t
|
|
|
2902 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
2903 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2904 {
|
|
|
2905 if (r->upstream == NULL) {
|
|
|
2906 v->not_found = 1;
|
|
|
2907 return NGX_OK;
|
|
|
2908 }
|
|
|
2909
|
|
|
2910 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
2911 &r->upstream->headers_in.headers.part,
|
|
|
2912 sizeof("upstream_http_") - 1);
|
|
|
2913 }
|
|
|
2914
|
|
|
2915
|
|
200
|
2916 static char *
|
|
|
2917 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2918 {
|
|
260
|
2919 char *rv;
|
|
|
2920 void *mconf;
|
|
|
2921 ngx_str_t *value;
|
|
|
2922 ngx_url_t u;
|
|
|
2923 ngx_uint_t m;
|
|
|
2924 ngx_conf_t pcf;
|
|
|
2925 ngx_http_module_t *module;
|
|
|
2926 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
2927 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2928
|
|
|
2929 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2930
|
|
|
2931 value = cf->args->elts;
|
|
|
2932 u.host = value[1];
|
|
|
2933 u.no_resolve = 1;
|
|
|
2934
|
|
|
2935 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
2936 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
2937 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
2938 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
2939 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
2940 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
2941 if (uscf == NULL) {
|
|
|
2942 return NGX_CONF_ERROR;
|
|
|
2943 }
|
|
|
2944
|
|
200
|
2945
|
|
|
2946 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2947 if (ctx == NULL) {
|
|
|
2948 return NGX_CONF_ERROR;
|
|
|
2949 }
|
|
|
2950
|
|
260
|
2951 http_ctx = cf->ctx;
|
|
|
2952 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
2953
|
|
|
2954 /* the upstream{}'s srv_conf */
|
|
|
2955
|
|
|
2956 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2957 if (ctx->srv_conf == NULL) {
|
|
|
2958 return NGX_CONF_ERROR;
|
|
|
2959 }
|
|
|
2960
|
|
|
2961 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2962
|
|
260
|
2963 uscf->srv_conf = ctx->srv_conf;
|
|
|
2964
|
|
200
|
2965
|
|
|
2966 /* the upstream{}'s loc_conf */
|
|
|
2967
|
|
|
2968 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2969 if (ctx->loc_conf == NULL) {
|
|
|
2970 return NGX_CONF_ERROR;
|
|
|
2971 }
|
|
|
2972
|
|
|
2973 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2974 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2975 continue;
|
|
|
2976 }
|
|
|
2977
|
|
|
2978 module = ngx_modules[m]->ctx;
|
|
|
2979
|
|
260
|
2980 if (module->create_srv_conf) {
|
|
|
2981 mconf = module->create_srv_conf(cf);
|
|
|
2982 if (mconf == NULL) {
|
|
|
2983 return NGX_CONF_ERROR;
|
|
|
2984 }
|
|
|
2985
|
|
|
2986 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2987 }
|
|
|
2988
|
|
200
|
2989 if (module->create_loc_conf) {
|
|
|
2990 mconf = module->create_loc_conf(cf);
|
|
|
2991 if (mconf == NULL) {
|
|
|
2992 return NGX_CONF_ERROR;
|
|
|
2993 }
|
|
|
2994
|
|
|
2995 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2996 }
|
|
|
2997 }
|
|
|
2998
|
|
|
2999
|
|
|
3000 /* parse inside upstream{} */
|
|
|
3001
|
|
|
3002 pcf = *cf;
|
|
|
3003 cf->ctx = ctx;
|
|
|
3004 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3005
|
|
|
3006 rv = ngx_conf_parse(cf, NULL);
|
|
|
3007
|
|
|
3008 *cf = pcf;
|
|
|
3009
|
|
|
3010 if (rv != NGX_CONF_OK) {
|
|
|
3011 return rv;
|
|
|
3012 }
|
|
|
3013
|
|
|
3014 if (uscf->servers == NULL) {
|
|
|
3015 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3016 "no servers are inside upstream");
|
|
|
3017 return NGX_CONF_ERROR;
|
|
|
3018 }
|
|
|
3019
|
|
|
3020 return rv;
|
|
|
3021 }
|
|
|
3022
|
|
|
3023
|
|
|
3024 static char *
|
|
|
3025 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3026 {
|
|
|
3027 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3028
|
|
260
|
3029 time_t fail_timeout;
|
|
|
3030 ngx_str_t *value, s;
|
|
|
3031 ngx_url_t u;
|
|
|
3032 ngx_int_t weight, max_fails;
|
|
|
3033 ngx_uint_t i;
|
|
|
3034 ngx_http_upstream_server_t *us;
|
|
200
|
3035
|
|
|
3036 if (uscf->servers == NULL) {
|
|
260
|
3037 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3038 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3039 if (uscf->servers == NULL) {
|
|
|
3040 return NGX_CONF_ERROR;
|
|
|
3041 }
|
|
|
3042 }
|
|
|
3043
|
|
260
|
3044 us = ngx_array_push(uscf->servers);
|
|
|
3045 if (us == NULL) {
|
|
200
|
3046 return NGX_CONF_ERROR;
|
|
|
3047 }
|
|
|
3048
|
|
260
|
3049 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3050
|
|
200
|
3051 value = cf->args->elts;
|
|
|
3052
|
|
|
3053 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3054
|
|
|
3055 u.url = value[1];
|
|
266
|
3056 u.default_port = 80;
|
|
200
|
3057
|
|
|
3058 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
3059 if (u.err) {
|
|
|
3060 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3061 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3062 }
|
|
|
3063
|
|
|
3064 return NGX_CONF_ERROR;
|
|
|
3065 }
|
|
|
3066
|
|
212
|
3067 weight = 1;
|
|
260
|
3068 max_fails = 1;
|
|
|
3069 fail_timeout = 10;
|
|
|
3070
|
|
|
3071 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3072
|
|
|
3073 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3074
|
|
|
3075 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3076 goto invalid;
|
|
|
3077 }
|
|
|
3078
|
|
|
3079 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3080
|
|
|
3081 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3082 goto invalid;
|
|
|
3083 }
|
|
|
3084
|
|
260
|
3085 continue;
|
|
|
3086 }
|
|
|
3087
|
|
|
3088 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3089
|
|
|
3090 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3091 goto invalid;
|
|
|
3092 }
|
|
|
3093
|
|
|
3094 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3095
|
|
|
3096 if (max_fails == NGX_ERROR) {
|
|
|
3097 goto invalid;
|
|
|
3098 }
|
|
|
3099
|
|
|
3100 continue;
|
|
212
|
3101 }
|
|
260
|
3102
|
|
|
3103 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3104
|
|
|
3105 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3106 goto invalid;
|
|
|
3107 }
|
|
|
3108
|
|
|
3109 s.len = value[i].len - 13;
|
|
|
3110 s.data = &value[i].data[13];
|
|
|
3111
|
|
|
3112 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3113
|
|
|
3114 if (fail_timeout < 0) {
|
|
|
3115 goto invalid;
|
|
|
3116 }
|
|
|
3117
|
|
|
3118 continue;
|
|
|
3119 }
|
|
|
3120
|
|
|
3121 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3122
|
|
|
3123 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3124 goto invalid;
|
|
|
3125 }
|
|
|
3126
|
|
|
3127 us->down = 1;
|
|
|
3128
|
|
|
3129 continue;
|
|
|
3130 }
|
|
|
3131
|
|
|
3132 goto invalid;
|
|
212
|
3133 }
|
|
|
3134
|
|
260
|
3135 us->addrs = u.addrs;
|
|
|
3136 us->naddrs = u.naddrs;
|
|
|
3137 us->weight = weight;
|
|
|
3138 us->max_fails = max_fails;
|
|
|
3139 us->fail_timeout = fail_timeout;
|
|
200
|
3140
|
|
|
3141 return NGX_CONF_OK;
|
|
212
|
3142
|
|
|
3143 invalid:
|
|
|
3144
|
|
260
|
3145 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3146 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3147
|
|
|
3148 return NGX_CONF_ERROR;
|
|
200
|
3149 }
|
|
|
3150
|
|
|
3151
|
|
|
3152 ngx_http_upstream_srv_conf_t *
|
|
260
|
3153 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3154 {
|
|
|
3155 ngx_uint_t i;
|
|
260
|
3156 ngx_http_upstream_server_t *us;
|
|
200
|
3157 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3158 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3159
|
|
260
|
3160 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3161
|
|
200
|
3162 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
3163 if (u->err) {
|
|
|
3164 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3165 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3166 }
|
|
|
3167
|
|
|
3168 return NULL;
|
|
|
3169 }
|
|
|
3170 }
|
|
|
3171
|
|
|
3172 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3173
|
|
|
3174 uscfp = umcf->upstreams.elts;
|
|
|
3175
|
|
|
3176 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3177
|
|
|
3178 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3179 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3180 != 0)
|
|
|
3181 {
|
|
200
|
3182 continue;
|
|
|
3183 }
|
|
|
3184
|
|
260
|
3185 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3186 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3187 {
|
|
260
|
3188 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3189 "duplicate upstream \"%V\"", &u->host);
|
|
|
3190 return NULL;
|
|
200
|
3191 }
|
|
260
|
3192
|
|
266
|
3193 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3194 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3195 "upstream \"%V\" may not have port %d",
|
|
|
3196 &u->host, u->port);
|
|
|
3197 return NULL;
|
|
|
3198 }
|
|
|
3199
|
|
|
3200 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3201 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3202 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3203 &u->host, uscfp[i]->port,
|
|
|
3204 uscfp[i]->file_name.data, uscfp[i]->line);
|
|
|
3205 return NULL;
|
|
|
3206 }
|
|
|
3207
|
|
|
3208 if (uscfp[i]->port != u->port) {
|
|
|
3209 continue;
|
|
260
|
3210 }
|
|
|
3211
|
|
324
|
3212 if (uscfp[i]->default_port && u->default_port
|
|
|
3213 && uscfp[i]->default_port != u->default_port)
|
|
|
3214 {
|
|
|
3215 continue;
|
|
|
3216 }
|
|
|
3217
|
|
260
|
3218 return uscfp[i];
|
|
200
|
3219 }
|
|
|
3220
|
|
|
3221 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3222 if (uscf == NULL) {
|
|
|
3223 return NULL;
|
|
|
3224 }
|
|
|
3225
|
|
260
|
3226 uscf->flags = flags;
|
|
200
|
3227 uscf->host = u->host;
|
|
|
3228 uscf->file_name = cf->conf_file->file.name;
|
|
|
3229 uscf->line = cf->conf_file->line;
|
|
266
|
3230 uscf->port = u->port;
|
|
|
3231 uscf->default_port = u->default_port;
|
|
260
|
3232
|
|
|
3233 if (u->naddrs == 1) {
|
|
|
3234 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3235 sizeof(ngx_http_upstream_server_t));
|
|
|
3236 if (uscf->servers == NULL) {
|
|
|
3237 return NGX_CONF_ERROR;
|
|
|
3238 }
|
|
|
3239
|
|
|
3240 us = ngx_array_push(uscf->servers);
|
|
|
3241 if (us == NULL) {
|
|
|
3242 return NGX_CONF_ERROR;
|
|
|
3243 }
|
|
|
3244
|
|
|
3245 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3246
|
|
|
3247 us->addrs = u->addrs;
|
|
|
3248 us->naddrs = u->naddrs;
|
|
|
3249 }
|
|
200
|
3250
|
|
|
3251 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3252 if (uscfp == NULL) {
|
|
|
3253 return NULL;
|
|
|
3254 }
|
|
|
3255
|
|
|
3256 *uscfp = uscf;
|
|
|
3257
|
|
|
3258 return uscf;
|
|
|
3259 }
|
|
|
3260
|
|
|
3261
|
|
58
|
3262 static void *
|
|
|
3263 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3264 {
|
|
|
3265 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3266
|
|
|
3267 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3268 if (umcf == NULL) {
|
|
|
3269 return NULL;
|
|
|
3270 }
|
|
|
3271
|
|
200
|
3272 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3273 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3274 != NGX_OK)
|
|
|
3275 {
|
|
|
3276 return NGX_CONF_ERROR;
|
|
|
3277 }
|
|
|
3278
|
|
58
|
3279 return umcf;
|
|
|
3280 }
|
|
|
3281
|
|
|
3282
|
|
|
3283 static char *
|
|
200
|
3284 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3285 {
|
|
|
3286 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3287
|
|
200
|
3288 ngx_uint_t i;
|
|
|
3289 ngx_array_t headers_in;
|
|
|
3290 ngx_hash_key_t *hk;
|
|
|
3291 ngx_hash_init_t hash;
|
|
260
|
3292 ngx_http_upstream_init_pt init;
|
|
200
|
3293 ngx_http_upstream_header_t *header;
|
|
|
3294 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3295
|
|
|
3296 uscfp = umcf->upstreams.elts;
|
|
|
3297
|
|
|
3298 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3299
|
|
|
3300 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3301 ngx_http_upstream_init_round_robin;
|
|
|
3302
|
|
|
3303 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3304 return NGX_CONF_ERROR;
|
|
|
3305 }
|
|
|
3306 }
|
|
198
|
3307
|
|
212
|
3308
|
|
260
|
3309 /* upstream_headers_in_hash */
|
|
|
3310
|
|
198
|
3311 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3312 != NGX_OK)
|
|
58
|
3313 {
|
|
|
3314 return NGX_CONF_ERROR;
|
|
|
3315 }
|
|
|
3316
|
|
198
|
3317 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3318 hk = ngx_array_push(&headers_in);
|
|
|
3319 if (hk == NULL) {
|
|
|
3320 return NGX_CONF_ERROR;
|
|
|
3321 }
|
|
|
3322
|
|
|
3323 hk->key = header->name;
|
|
|
3324 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3325 hk->value = header;
|
|
|
3326 }
|
|
|
3327
|
|
|
3328 hash.hash = &umcf->headers_in_hash;
|
|
|
3329 hash.key = ngx_hash_key_lc;
|
|
|
3330 hash.max_size = 512;
|
|
244
|
3331 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3332 hash.name = "upstream_headers_in_hash";
|
|
|
3333 hash.pool = cf->pool;
|
|
|
3334 hash.temp_pool = NULL;
|
|
|
3335
|
|
|
3336 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3337 return NGX_CONF_ERROR;
|
|
|
3338 }
|
|
58
|
3339
|
|
|
3340 return NGX_CONF_OK;
|
|
|
3341 }
|
