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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
|
|
340
|
437 if (!u->cacheable && !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
|
|
340
|
503 if (!u->cacheable && !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");
|
|
326
|
568 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
569 return;
|
|
92
|
570 }
|
|
|
571
|
|
326
|
572 if (rc == NGX_DECLINED) {
|
|
28
|
573 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
574 return;
|
|
|
575 }
|
|
|
576
|
|
126
|
577 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
578
|
|
28
|
579 c = u->peer.connection;
|
|
|
580
|
|
|
581 c->data = r;
|
|
140
|
582
|
|
58
|
583 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
584 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
585
|
|
326
|
586 c->sendfile &= r->connection->sendfile;
|
|
28
|
587
|
|
|
588 c->pool = r->pool;
|
|
|
589 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
590
|
|
|
591 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
592
|
|
|
593 u->writer.out = NULL;
|
|
|
594 u->writer.last = &u->writer.out;
|
|
|
595 u->writer.connection = c;
|
|
|
596 u->writer.limit = 0;
|
|
|
597
|
|
|
598 if (u->request_sent) {
|
|
58
|
599 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
600 ngx_http_upstream_finalize_request(r, u,
|
|
|
601 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
602 return;
|
|
|
603 }
|
|
28
|
604 }
|
|
|
605
|
|
276
|
606 if (r->request_body
|
|
|
607 && r->request_body->buf
|
|
|
608 && r->request_body->temp_file
|
|
|
609 && r == r->main)
|
|
|
610 {
|
|
122
|
611 /*
|
|
|
612 * the r->request_body->buf can be reused for one request only,
|
|
|
613 * the subrequests should allocate their own temporay bufs
|
|
|
614 */
|
|
|
615
|
|
|
616 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
617 if (u->output.free == NULL) {
|
|
|
618 ngx_http_upstream_finalize_request(r, u,
|
|
|
619 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
620 return;
|
|
28
|
621 }
|
|
122
|
622
|
|
|
623 u->output.free->buf = r->request_body->buf;
|
|
|
624 u->output.free->next = NULL;
|
|
|
625 u->output.allocated = 1;
|
|
|
626
|
|
|
627 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
628 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
629 r->request_body->buf->tag = u->output.tag;
|
|
28
|
630 }
|
|
|
631
|
|
|
632 u->request_sent = 0;
|
|
|
633
|
|
|
634 if (rc == NGX_AGAIN) {
|
|
|
635 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
636 return;
|
|
|
637 }
|
|
|
638
|
|
126
|
639 #if (NGX_HTTP_SSL)
|
|
|
640
|
|
140
|
641 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
642 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
643 return;
|
|
|
644 }
|
|
|
645
|
|
|
646 #endif
|
|
|
647
|
|
28
|
648 ngx_http_upstream_send_request(r, u);
|
|
|
649 }
|
|
|
650
|
|
|
651
|
|
126
|
652 #if (NGX_HTTP_SSL)
|
|
|
653
|
|
|
654 static void
|
|
140
|
655 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
656 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
657 {
|
|
260
|
658 ngx_int_t rc;
|
|
140
|
659
|
|
|
660 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
661 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
662 == NGX_ERROR)
|
|
|
663 {
|
|
|
664 ngx_http_upstream_finalize_request(r, u,
|
|
|
665 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
666 return;
|
|
|
667 }
|
|
|
668
|
|
|
669 c->sendfile = 0;
|
|
168
|
670 u->output.sendfile = 0;
|
|
140
|
671
|
|
318
|
672 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
140
|
673 ngx_http_upstream_finalize_request(r, u,
|
|
|
674 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
675 return;
|
|
|
676 }
|
|
|
677
|
|
190
|
678 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
679
|
|
140
|
680 rc = ngx_ssl_handshake(c);
|
|
|
681
|
|
|
682 if (rc == NGX_AGAIN) {
|
|
|
683 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
684 return;
|
|
|
685 }
|
|
|
686
|
|
|
687 ngx_http_upstream_ssl_handshake(c);
|
|
|
688 }
|
|
|
689
|
|
|
690
|
|
|
691 static void
|
|
126
|
692 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
693 {
|
|
|
694 ngx_http_request_t *r;
|
|
|
695 ngx_http_upstream_t *u;
|
|
|
696
|
|
|
697 r = c->data;
|
|
|
698 u = r->upstream;
|
|
|
699
|
|
|
700 if (c->ssl->handshaked) {
|
|
|
701
|
|
260
|
702 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
703
|
|
126
|
704 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
705 c->read->handler = ngx_http_upstream_process_header;
|
|
|
706
|
|
|
707 ngx_http_upstream_send_request(r, u);
|
|
|
708
|
|
|
709 return;
|
|
|
710 }
|
|
|
711
|
|
|
712 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
713
|
|
|
714 }
|
|
|
715
|
|
|
716 #endif
|
|
|
717
|
|
|
718
|
|
58
|
719 static ngx_int_t
|
|
36
|
720 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
721 {
|
|
|
722 ngx_chain_t *cl;
|
|
|
723
|
|
58
|
724 if (u->reinit_request(r) != NGX_OK) {
|
|
|
725 return NGX_ERROR;
|
|
|
726 }
|
|
|
727
|
|
|
728 ngx_memzero(&r->upstream->headers_in,
|
|
|
729 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
730
|
|
|
731 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
732 sizeof(ngx_table_elt_t))
|
|
|
733 != NGX_OK)
|
|
58
|
734 {
|
|
|
735 return NGX_ERROR;
|
|
28
|
736 }
|
|
|
737
|
|
|
738 /* reinit the request chain */
|
|
126
|
739
|
|
58
|
740 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
741 cl->buf->pos = cl->buf->start;
|
|
|
742 cl->buf->file_pos = 0;
|
|
|
743 }
|
|
|
744
|
|
58
|
745 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
746
|
|
122
|
747 if (r->request_body && r->request_body->temp_file
|
|
146
|
748 && r != r->main && u->output.buf)
|
|
122
|
749 {
|
|
|
750 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
751 if (u->output.free == NULL) {
|
|
|
752 return NGX_ERROR;
|
|
58
|
753 }
|
|
122
|
754
|
|
|
755 u->output.free->buf = u->output.buf;
|
|
|
756 u->output.free->next = NULL;
|
|
|
757
|
|
|
758 u->output.buf->pos = u->output.buf->start;
|
|
|
759 u->output.buf->last = u->output.buf->start;
|
|
58
|
760 }
|
|
28
|
761
|
|
|
762 u->output.buf = NULL;
|
|
|
763 u->output.in = NULL;
|
|
|
764 u->output.busy = NULL;
|
|
126
|
765
|
|
130
|
766 /* reinit u->buffer */
|
|
126
|
767
|
|
28
|
768 #if 0
|
|
|
769 if (u->cache) {
|
|
130
|
770 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
771 u->buffer.last = u->buffer.pos;
|
|
28
|
772
|
|
|
773 } else {
|
|
130
|
774 u->buffer.pos = u->buffer.start;
|
|
|
775 u->buffer.last = u->buffer.start;
|
|
28
|
776 }
|
|
|
777 #else
|
|
58
|
778
|
|
130
|
779 u->buffer.pos = u->buffer.start;
|
|
|
780 u->buffer.last = u->buffer.start;
|
|
58
|
781
|
|
28
|
782 #endif
|
|
|
783
|
|
58
|
784 return NGX_OK;
|
|
28
|
785 }
|
|
|
786
|
|
|
787
|
|
36
|
788 static void
|
|
|
789 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
790 {
|
|
294
|
791 ngx_int_t rc;
|
|
32
|
792 ngx_connection_t *c;
|
|
126
|
793
|
|
28
|
794 c = u->peer.connection;
|
|
|
795
|
|
|
796 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
797 "http upstream send request");
|
|
|
798
|
|
294
|
799 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
800 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
801 return;
|
|
28
|
802 }
|
|
|
803
|
|
32
|
804 c->log->action = "sending request to upstream";
|
|
28
|
805
|
|
58
|
806 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
807
|
|
|
808 u->request_sent = 1;
|
|
|
809
|
|
|
810 if (rc == NGX_ERROR) {
|
|
|
811 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
812 return;
|
|
|
813 }
|
|
|
814
|
|
|
815 if (c->write->timer_set) {
|
|
|
816 ngx_del_timer(c->write);
|
|
|
817 }
|
|
|
818
|
|
|
819 if (rc == NGX_AGAIN) {
|
|
|
820 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
821
|
|
|
822 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
823 {
|
|
|
824 ngx_http_upstream_finalize_request(r, u,
|
|
|
825 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
826 return;
|
|
|
827 }
|
|
|
828
|
|
|
829 return;
|
|
|
830 }
|
|
|
831
|
|
|
832 /* rc == NGX_OK */
|
|
|
833
|
|
|
834 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
835 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
836 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
837 ngx_tcp_push_n " failed");
|
|
|
838 ngx_http_upstream_finalize_request(r, u,
|
|
|
839 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
840 return;
|
|
28
|
841 }
|
|
|
842
|
|
|
843 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
844 }
|
|
126
|
845
|
|
28
|
846 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
847
|
|
|
848 #if 1
|
|
|
849 if (c->read->ready) {
|
|
126
|
850
|
|
28
|
851 /* post aio operation */
|
|
|
852
|
|
|
853 /*
|
|
|
854 * TODO comment
|
|
|
855 * although we can post aio operation just in the end
|
|
|
856 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
857 * it's better to do here because we postpone header buffer allocation
|
|
|
858 */
|
|
|
859
|
|
|
860 ngx_http_upstream_process_header(c->read);
|
|
|
861 return;
|
|
|
862 }
|
|
|
863 #endif
|
|
|
864
|
|
58
|
865 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
866
|
|
58
|
867 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
868 ngx_http_upstream_finalize_request(r, u,
|
|
|
869 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
870 return;
|
|
|
871 }
|
|
|
872 }
|
|
|
873
|
|
|
874
|
|
36
|
875 static void
|
|
|
876 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
877 {
|
|
|
878 ngx_connection_t *c;
|
|
|
879 ngx_http_request_t *r;
|
|
|
880 ngx_http_upstream_t *u;
|
|
|
881
|
|
|
882 c = wev->data;
|
|
|
883 r = c->data;
|
|
|
884 u = r->upstream;
|
|
|
885
|
|
|
886 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
887 "http upstream send request handler");
|
|
|
888
|
|
|
889 if (wev->timedout) {
|
|
|
890 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
891 return;
|
|
|
892 }
|
|
|
893
|
|
140
|
894 #if (NGX_HTTP_SSL)
|
|
|
895
|
|
|
896 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
897 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
898 return;
|
|
|
899 }
|
|
|
900
|
|
|
901 #endif
|
|
|
902
|
|
200
|
903 if (u->header_sent) {
|
|
|
904 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
905
|
|
|
906 (void) ngx_handle_write_event(wev, 0);
|
|
|
907
|
|
|
908 return;
|
|
|
909 }
|
|
|
910
|
|
28
|
911 ngx_http_upstream_send_request(r, u);
|
|
|
912 }
|
|
|
913
|
|
|
914
|
|
36
|
915 static void
|
|
|
916 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
917 {
|
|
64
|
918 ssize_t n;
|
|
|
919 ngx_int_t rc;
|
|
122
|
920 ngx_str_t *uri, args;
|
|
198
|
921 ngx_uint_t i, flags;
|
|
64
|
922 ngx_list_part_t *part;
|
|
|
923 ngx_table_elt_t *h;
|
|
|
924 ngx_connection_t *c;
|
|
|
925 ngx_http_request_t *r;
|
|
|
926 ngx_http_upstream_t *u;
|
|
|
927 ngx_http_err_page_t *err_page;
|
|
|
928 ngx_http_core_loc_conf_t *clcf;
|
|
|
929 ngx_http_upstream_header_t *hh;
|
|
|
930 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
931
|
|
|
932 c = rev->data;
|
|
|
933 r = c->data;
|
|
|
934 u = r->upstream;
|
|
|
935
|
|
|
936 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
937 "http upstream process header");
|
|
28
|
938
|
|
32
|
939 c->log->action = "reading response header from upstream";
|
|
28
|
940
|
|
|
941 if (rev->timedout) {
|
|
|
942 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
943 return;
|
|
|
944 }
|
|
126
|
945
|
|
294
|
946 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
947 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
948 return;
|
|
|
949 }
|
|
|
950
|
|
130
|
951 if (u->buffer.start == NULL) {
|
|
|
952 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
953 if (u->buffer.start == NULL) {
|
|
28
|
954 ngx_http_upstream_finalize_request(r, u,
|
|
|
955 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
956 return;
|
|
|
957 }
|
|
|
958
|
|
130
|
959 u->buffer.pos = u->buffer.start;
|
|
|
960 u->buffer.last = u->buffer.start;
|
|
|
961 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
962 u->buffer.temporary = 1;
|
|
|
963
|
|
|
964 u->buffer.tag = u->output.tag;
|
|
28
|
965
|
|
58
|
966 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
967 sizeof(ngx_table_elt_t))
|
|
|
968 != NGX_OK)
|
|
58
|
969 {
|
|
|
970 ngx_http_upstream_finalize_request(r, u,
|
|
|
971 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
972 return;
|
|
|
973 }
|
|
|
974
|
|
28
|
975 #if 0
|
|
|
976 if (u->cache) {
|
|
130
|
977 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
978 u->buffer.last = u->buffer.pos;
|
|
28
|
979 }
|
|
|
980 #endif
|
|
|
981 }
|
|
|
982
|
|
340
|
983 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
28
|
984
|
|
|
985 if (n == NGX_AGAIN) {
|
|
|
986 #if 0
|
|
|
987 ngx_add_timer(rev, u->read_timeout);
|
|
|
988 #endif
|
|
|
989
|
|
|
990 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
991 ngx_http_upstream_finalize_request(r, u,
|
|
|
992 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
993 return;
|
|
|
994 }
|
|
|
995
|
|
|
996 return;
|
|
|
997 }
|
|
|
998
|
|
|
999 if (n == 0) {
|
|
|
1000 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1001 "upstream prematurely closed connection");
|
|
|
1002 }
|
|
|
1003
|
|
|
1004 if (n == NGX_ERROR || n == 0) {
|
|
|
1005 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
130
|
1009 u->buffer.last += n;
|
|
28
|
1010
|
|
|
1011 #if 0
|
|
|
1012 u->valid_header_in = 0;
|
|
|
1013
|
|
|
1014 u->peer.cached = 0;
|
|
|
1015 #endif
|
|
|
1016
|
|
|
1017 rc = u->process_header(r);
|
|
|
1018
|
|
|
1019 if (rc == NGX_AGAIN) {
|
|
|
1020 #if 0
|
|
|
1021 ngx_add_timer(rev, u->read_timeout);
|
|
|
1022 #endif
|
|
|
1023
|
|
130
|
1024 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1025 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1026 "upstream sent too big header");
|
|
|
1027
|
|
|
1028 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1029 return;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1033 ngx_http_upstream_finalize_request(r, u,
|
|
|
1034 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1035 return;
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 return;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1042 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1043 return;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1047 ngx_http_upstream_finalize_request(r, u,
|
|
|
1048 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1049 return;
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 /* rc == NGX_OK */
|
|
|
1053
|
|
248
|
1054 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1055 && r->subrequest_in_memory)
|
|
|
1056 {
|
|
|
1057 u->buffer.last = u->buffer.pos;
|
|
|
1058 }
|
|
|
1059
|
|
78
|
1060 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1061
|
|
|
1062 if (u->peer.tries > 1
|
|
|
1063 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1064 {
|
|
|
1065 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1066 return;
|
|
|
1067 }
|
|
|
1068
|
|
|
1069 #if (NGX_HTTP_CACHE)
|
|
|
1070
|
|
|
1071 if (u->peer.tries == 0
|
|
|
1072 && u->stale
|
|
|
1073 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1074 {
|
|
|
1075 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1076 ngx_http_send_cached_response(r));
|
|
58
|
1077 return;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 #endif
|
|
|
1081 }
|
|
|
1082
|
|
146
|
1083 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1084
|
|
|
1085 if (u->peer.tries > 1
|
|
|
1086 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1087 {
|
|
|
1088 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1089 return;
|
|
|
1090 }
|
|
|
1091
|
|
224
|
1092 if (u->conf->intercept_404) {
|
|
|
1093 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1094 return;
|
|
|
1095 }
|
|
58
|
1096 }
|
|
|
1097
|
|
|
1098
|
|
78
|
1099 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1100 && u->conf->intercept_errors)
|
|
36
|
1101 {
|
|
|
1102 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1103
|
|
|
1104 if (clcf->error_pages) {
|
|
|
1105
|
|
|
1106 err_page = clcf->error_pages->elts;
|
|
|
1107 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1108 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1109
|
|
|
1110 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1111
|
|
|
1112 r->headers_out.www_authenticate =
|
|
|
1113 ngx_list_push(&r->headers_out.headers);
|
|
|
1114
|
|
|
1115 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1116 ngx_http_upstream_finalize_request(r, u,
|
|
|
1117 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1118 return;
|
|
|
1119 }
|
|
|
1120
|
|
126
|
1121 *r->headers_out.www_authenticate =
|
|
78
|
1122 *u->headers_in.www_authenticate;
|
|
|
1123 }
|
|
|
1124
|
|
36
|
1125 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1126 u->headers_in.status_n);
|
|
36
|
1127 return;
|
|
|
1128 }
|
|
|
1129 }
|
|
|
1130 }
|
|
|
1131 }
|
|
|
1132
|
|
230
|
1133 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1134
|
|
64
|
1135 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1136
|
|
64
|
1137 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1138
|
|
|
1139 part = &r->upstream->headers_in.headers.part;
|
|
|
1140 h = part->elts;
|
|
|
1141
|
|
|
1142 for (i = 0; /* void */; i++) {
|
|
|
1143
|
|
|
1144 if (i >= part->nelts) {
|
|
|
1145 if (part->next == NULL) {
|
|
|
1146 break;
|
|
|
1147 }
|
|
126
|
1148
|
|
64
|
1149 part = part->next;
|
|
|
1150 h = part->elts;
|
|
|
1151 i = 0;
|
|
|
1152 }
|
|
|
1153
|
|
198
|
1154 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1155 h[i].lowcase_key, h[i].key.len);
|
|
|
1156
|
|
|
1157 if (hh && hh->redirect) {
|
|
|
1158 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1159 ngx_http_finalize_request(r,
|
|
244
|
1160 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1161 return;
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164 }
|
|
|
1165
|
|
122
|
1166 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1167 args.len = 0;
|
|
|
1168 args.data = NULL;
|
|
|
1169 flags = 0;
|
|
|
1170
|
|
|
1171 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1172 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1173 return;
|
|
|
1174 }
|
|
|
1175
|
|
|
1176 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1177 r->zero_in_uri = 1;
|
|
|
1178 }
|
|
|
1179
|
|
202
|
1180 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1181 r->method = NGX_HTTP_GET;
|
|
|
1182 }
|
|
|
1183
|
|
122
|
1184 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1185 return;
|
|
|
1186 }
|
|
|
1187
|
|
58
|
1188 part = &r->upstream->headers_in.headers.part;
|
|
|
1189 h = part->elts;
|
|
|
1190
|
|
|
1191 for (i = 0; /* void */; i++) {
|
|
28
|
1192
|
|
58
|
1193 if (i >= part->nelts) {
|
|
|
1194 if (part->next == NULL) {
|
|
|
1195 break;
|
|
|
1196 }
|
|
126
|
1197
|
|
58
|
1198 part = part->next;
|
|
|
1199 h = part->elts;
|
|
|
1200 i = 0;
|
|
|
1201 }
|
|
|
1202
|
|
198
|
1203 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1204 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1205 {
|
|
198
|
1206 continue;
|
|
|
1207 }
|
|
|
1208
|
|
|
1209 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1210 h[i].lowcase_key, h[i].key.len);
|
|
|
1211
|
|
|
1212 if (hh) {
|
|
|
1213 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1214 ngx_http_upstream_finalize_request(r, u,
|
|
|
1215 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1216 return;
|
|
|
1217 }
|
|
|
1218
|
|
|
1219 continue;
|
|
|
1220 }
|
|
|
1221
|
|
|
1222 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1223 ngx_http_upstream_finalize_request(r, u,
|
|
|
1224 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1225 return;
|
|
|
1226 }
|
|
|
1227 }
|
|
|
1228
|
|
198
|
1229 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1230 r->headers_out.server->hash = 0;
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1234 r->headers_out.date->hash = 0;
|
|
|
1235 }
|
|
|
1236
|
|
78
|
1237 r->headers_out.status = u->headers_in.status_n;
|
|
|
1238 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1239
|
|
130
|
1240 if (r->headers_out.content_length_n != -1) {
|
|
|
1241 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1242
|
|
|
1243 } else {
|
|
|
1244 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1245 }
|
|
|
1246
|
|
248
|
1247 if (!r->subrequest_in_memory) {
|
|
|
1248 ngx_http_upstream_send_response(r, u);
|
|
|
1249 return;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 /* subrequest content in memory */
|
|
|
1253
|
|
|
1254 if (u->input_filter == NULL) {
|
|
|
1255 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1256 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1257 u->input_filter_ctx = r;
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1261 ngx_http_upstream_finalize_request(r, u,
|
|
|
1262 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1263 return;
|
|
|
1264 }
|
|
|
1265
|
|
|
1266 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1267 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1268 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1269 return;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1273 return;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1277
|
|
|
1278 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1279 }
|
|
|
1280
|
|
|
1281
|
|
294
|
1282 static ngx_int_t
|
|
|
1283 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1284 {
|
|
|
1285 int err;
|
|
|
1286 socklen_t len;
|
|
|
1287
|
|
|
1288 #if (NGX_HAVE_KQUEUE)
|
|
|
1289
|
|
|
1290 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1291 if (c->write->pending_eof) {
|
|
336
|
1292 c->log->action = "connecting to upstream";
|
|
296
|
1293 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1294 "kevent() reported that connect() failed");
|
|
|
1295 return NGX_ERROR;
|
|
|
1296 }
|
|
294
|
1297
|
|
|
1298 } else
|
|
|
1299 #endif
|
|
|
1300 {
|
|
296
|
1301 err = 0;
|
|
|
1302 len = sizeof(int);
|
|
|
1303
|
|
|
1304 /*
|
|
|
1305 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1306 * Solaris returns -1 and sets errno
|
|
|
1307 */
|
|
|
1308
|
|
|
1309 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1310 == -1)
|
|
|
1311 {
|
|
|
1312 err = ngx_errno;
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 if (err) {
|
|
336
|
1316 c->log->action = "connecting to upstream";
|
|
296
|
1317 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1318 return NGX_ERROR;
|
|
|
1319 }
|
|
294
|
1320 }
|
|
|
1321
|
|
|
1322 return NGX_OK;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325
|
|
248
|
1326 static void
|
|
|
1327 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1328 {
|
|
|
1329 size_t size;
|
|
|
1330 ssize_t n;
|
|
|
1331 ngx_buf_t *b;
|
|
|
1332 ngx_connection_t *c;
|
|
|
1333 ngx_http_request_t *r;
|
|
|
1334 ngx_http_upstream_t *u;
|
|
|
1335
|
|
|
1336 c = rev->data;
|
|
|
1337 r = c->data;
|
|
|
1338 u = r->upstream;
|
|
|
1339
|
|
|
1340 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1341 "http upstream process body on memory");
|
|
|
1342
|
|
|
1343 if (rev->timedout) {
|
|
|
1344 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1345 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1346 return;
|
|
|
1347 }
|
|
|
1348
|
|
|
1349 b = &u->buffer;
|
|
|
1350
|
|
|
1351 for ( ;; ) {
|
|
|
1352
|
|
|
1353 size = b->end - b->last;
|
|
|
1354
|
|
|
1355 if (size == 0) {
|
|
|
1356 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1357 "upstream buffer is too small to read repsonse");
|
|
|
1358 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1359 return;
|
|
|
1360 }
|
|
|
1361
|
|
|
1362 n = c->recv(c, b->last, size);
|
|
|
1363
|
|
|
1364 if (n == NGX_AGAIN) {
|
|
|
1365 break;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 if (n == 0 || n == NGX_ERROR) {
|
|
|
1369 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1370 return;
|
|
|
1371 }
|
|
|
1372
|
|
|
1373 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1374 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1375 return;
|
|
|
1376 }
|
|
|
1377
|
|
|
1378 if (!rev->ready) {
|
|
|
1379 break;
|
|
|
1380 }
|
|
|
1381 }
|
|
|
1382
|
|
|
1383 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1384 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1385 return;
|
|
|
1386 }
|
|
|
1387
|
|
|
1388 if (rev->active) {
|
|
|
1389 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1390
|
|
|
1391 } else if (rev->timer_set) {
|
|
|
1392 ngx_del_timer(rev);
|
|
|
1393 }
|
|
230
|
1394 }
|
|
|
1395
|
|
|
1396
|
|
|
1397 static void
|
|
|
1398 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1399 {
|
|
|
1400 int tcp_nodelay;
|
|
|
1401 ssize_t size;
|
|
|
1402 ngx_int_t rc;
|
|
|
1403 ngx_event_pipe_t *p;
|
|
|
1404 ngx_connection_t *c;
|
|
|
1405 ngx_pool_cleanup_t *cl;
|
|
|
1406 ngx_pool_cleanup_file_t *clf;
|
|
|
1407 ngx_http_core_loc_conf_t *clcf;
|
|
|
1408
|
|
58
|
1409 rc = ngx_http_send_header(r);
|
|
28
|
1410
|
|
274
|
1411 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1412 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1413 return;
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 u->header_sent = 1;
|
|
|
1417
|
|
122
|
1418 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1419 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1420 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1421 clf = cl->data;
|
|
|
1422
|
|
|
1423 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1424 cl->handler(clf);
|
|
|
1425 cl->handler = NULL;
|
|
208
|
1426 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1427 break;
|
|
|
1428 }
|
|
|
1429 }
|
|
|
1430 }
|
|
|
1431 }
|
|
|
1432
|
|
132
|
1433 c = r->connection;
|
|
|
1434
|
|
130
|
1435 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1436
|
|
198
|
1437 if (!u->buffering) {
|
|
130
|
1438
|
|
|
1439 if (u->input_filter == NULL) {
|
|
|
1440 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1441 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1442 u->input_filter_ctx = r;
|
|
|
1443 }
|
|
|
1444
|
|
|
1445 u->peer.connection->read->handler =
|
|
|
1446 ngx_http_upstream_process_non_buffered_body;
|
|
|
1447 r->write_event_handler =
|
|
|
1448 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1449
|
|
|
1450 r->limit_rate = 0;
|
|
|
1451
|
|
|
1452 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1453 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1454 return;
|
|
|
1455 }
|
|
|
1456
|
|
132
|
1457 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1458 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1459
|
|
|
1460 tcp_nodelay = 1;
|
|
|
1461
|
|
|
1462 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1463 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1464 {
|
|
|
1465 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1466 "setsockopt(TCP_NODELAY) failed");
|
|
|
1467 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1468 return;
|
|
|
1469 }
|
|
|
1470
|
|
|
1471 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1472 }
|
|
|
1473
|
|
130
|
1474 size = u->buffer.last - u->buffer.pos;
|
|
|
1475
|
|
|
1476 if (size) {
|
|
|
1477 u->buffer.last = u->buffer.pos;
|
|
|
1478
|
|
|
1479 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1480 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1481 return;
|
|
|
1482 }
|
|
|
1483
|
|
132
|
1484 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1485
|
|
|
1486 } else {
|
|
|
1487 u->buffer.pos = u->buffer.start;
|
|
|
1488 u->buffer.last = u->buffer.start;
|
|
|
1489
|
|
|
1490 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1491 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1492 return;
|
|
|
1493 }
|
|
336
|
1494
|
|
|
1495 if (u->peer.connection->read->ready) {
|
|
|
1496 ngx_http_upstream_process_non_buffered_body(
|
|
|
1497 u->peer.connection->read);
|
|
|
1498 }
|
|
130
|
1499 }
|
|
|
1500
|
|
|
1501 return;
|
|
|
1502 }
|
|
|
1503
|
|
28
|
1504 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1505
|
|
|
1506 #if 0
|
|
|
1507
|
|
|
1508 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1509 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1510 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1511 ngx_close_file_n " \"%s\" failed",
|
|
|
1512 u->cache->ctx.file.name.data);
|
|
|
1513 }
|
|
|
1514 }
|
|
|
1515
|
|
340
|
1516 if (u->cacheable) {
|
|
130
|
1517 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1518
|
|
|
1519 header->expires = u->cache->ctx.expires;
|
|
|
1520 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1521 header->date = u->cache->ctx.date;
|
|
|
1522 header->length = r->headers_out.content_length_n;
|
|
|
1523 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1524
|
|
|
1525 header->key_len = u->cache->ctx.key0.len;
|
|
|
1526 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1527 header->key[header->key_len] = LF;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 #endif
|
|
|
1531
|
|
130
|
1532 p = u->pipe;
|
|
28
|
1533
|
|
|
1534 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1535 p->output_ctx = r;
|
|
|
1536 p->tag = u->output.tag;
|
|
126
|
1537 p->bufs = u->conf->bufs;
|
|
28
|
1538 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1539 p->upstream = u->peer.connection;
|
|
132
|
1540 p->downstream = c;
|
|
28
|
1541 p->pool = r->pool;
|
|
132
|
1542 p->log = c->log;
|
|
126
|
1543
|
|
340
|
1544 p->cacheable = u->cacheable || u->store;
|
|
28
|
1545
|
|
50
|
1546 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1547 if (p->temp_file == NULL) {
|
|
28
|
1548 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1549 return;
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1553 p->temp_file->file.log = c->log;
|
|
28
|
1554 p->temp_file->path = u->conf->temp_path;
|
|
|
1555 p->temp_file->pool = r->pool;
|
|
126
|
1556
|
|
340
|
1557 if (u->cacheable || u->store) {
|
|
28
|
1558 p->temp_file->persistent = 1;
|
|
318
|
1559
|
|
28
|
1560 } else {
|
|
216
|
1561 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1562 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1563 "to a temporary file";
|
|
|
1564 }
|
|
|
1565
|
|
|
1566 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1567 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1568
|
|
50
|
1569 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1570 if (p->preread_bufs == NULL) {
|
|
28
|
1571 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1572 return;
|
|
|
1573 }
|
|
318
|
1574
|
|
130
|
1575 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1576 p->preread_bufs->next = NULL;
|
|
130
|
1577 u->buffer.recycled = 1;
|
|
|
1578
|
|
|
1579 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1580
|
|
340
|
1581 if (u->cacheable) {
|
|
318
|
1582
|
|
28
|
1583 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1584 if (p->buf_to_file == NULL) {
|
|
|
1585 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1586 return;
|
|
|
1587 }
|
|
318
|
1588
|
|
130
|
1589 p->buf_to_file->pos = u->buffer.start;
|
|
|
1590 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1591 p->buf_to_file->temporary = 1;
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1595 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1596 p->single_buf = 1;
|
|
|
1597 }
|
|
|
1598
|
|
|
1599 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1600 p->free_bufs = 1;
|
|
|
1601
|
|
|
1602 /*
|
|
130
|
1603 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1604 * as though these bytes were read
|
|
|
1605 */
|
|
130
|
1606 u->buffer.last = u->buffer.pos;
|
|
28
|
1607
|
|
|
1608 if (u->conf->cyclic_temp_file) {
|
|
|
1609
|
|
|
1610 /*
|
|
|
1611 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1612 * because the writing a new data may interfere with sendfile()
|
|
|
1613 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1614 */
|
|
|
1615
|
|
|
1616 p->cyclic_temp_file = 1;
|
|
132
|
1617 c->sendfile = 0;
|
|
28
|
1618
|
|
|
1619 } else {
|
|
|
1620 p->cyclic_temp_file = 0;
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 p->read_timeout = u->conf->read_timeout;
|
|
|
1624 p->send_timeout = clcf->send_timeout;
|
|
|
1625 p->send_lowat = clcf->send_lowat;
|
|
|
1626
|
|
58
|
1627 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1628 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1629
|
|
|
1630 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1631 }
|
|
|
1632
|
|
|
1633
|
|
36
|
1634 static void
|
|
130
|
1635 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1636 {
|
|
|
1637 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1638 }
|
|
|
1639
|
|
|
1640
|
|
|
1641 static void
|
|
|
1642 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1643 {
|
|
|
1644 size_t size;
|
|
|
1645 ssize_t n;
|
|
|
1646 ngx_buf_t *b;
|
|
132
|
1647 ngx_int_t rc;
|
|
130
|
1648 ngx_uint_t do_write;
|
|
260
|
1649 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1650 ngx_http_request_t *r;
|
|
|
1651 ngx_http_upstream_t *u;
|
|
|
1652 ngx_http_core_loc_conf_t *clcf;
|
|
|
1653
|
|
|
1654 c = ev->data;
|
|
244
|
1655 r = c->data;
|
|
|
1656 u = r->upstream;
|
|
130
|
1657
|
|
|
1658 if (ev->write) {
|
|
|
1659 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1660 "http upstream process non buffered downstream");
|
|
|
1661 c->log->action = "sending to client";
|
|
|
1662
|
|
|
1663 } else {
|
|
|
1664 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1665 "http upstream process non buffered upstream");
|
|
|
1666 c->log->action = "reading upstream";
|
|
|
1667 }
|
|
|
1668
|
|
|
1669 if (ev->timedout) {
|
|
|
1670 if (ev->write) {
|
|
|
1671 c->timedout = 1;
|
|
160
|
1672 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1673
|
|
130
|
1674 } else {
|
|
160
|
1675 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1676 }
|
|
244
|
1677
|
|
|
1678 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1679 return;
|
|
130
|
1680 }
|
|
|
1681
|
|
260
|
1682 downstream = r->connection;
|
|
|
1683 upstream = u->peer.connection;
|
|
130
|
1684
|
|
|
1685 b = &u->buffer;
|
|
|
1686
|
|
|
1687 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1688
|
|
206
|
1689 do_write = ev->write || u->length == 0;
|
|
130
|
1690
|
|
|
1691 for ( ;; ) {
|
|
|
1692
|
|
|
1693 if (do_write) {
|
|
|
1694
|
|
|
1695 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1696 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1697
|
|
260
|
1698 if (downstream->destroyed) {
|
|
132
|
1699 return;
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 if (rc == NGX_ERROR) {
|
|
130
|
1703 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1704 return;
|
|
|
1705 }
|
|
|
1706
|
|
|
1707 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1708 &u->out_bufs, u->output.tag);
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 if (u->busy_bufs == NULL) {
|
|
|
1712
|
|
|
1713 if (u->length == 0
|
|
260
|
1714 || upstream->read->eof
|
|
|
1715 || upstream->read->error)
|
|
130
|
1716 {
|
|
|
1717 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1718 return;
|
|
|
1719 }
|
|
|
1720
|
|
|
1721 b->pos = b->start;
|
|
|
1722 b->last = b->start;
|
|
|
1723 }
|
|
|
1724 }
|
|
|
1725
|
|
|
1726 size = b->end - b->last;
|
|
|
1727
|
|
|
1728 if (size > u->length) {
|
|
|
1729 size = u->length;
|
|
|
1730 }
|
|
|
1731
|
|
260
|
1732 if (size && upstream->read->ready) {
|
|
|
1733
|
|
|
1734 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1735
|
|
|
1736 if (n == NGX_AGAIN) {
|
|
|
1737 break;
|
|
|
1738 }
|
|
|
1739
|
|
|
1740 if (n > 0) {
|
|
|
1741 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1742 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1743 return;
|
|
|
1744 }
|
|
|
1745 }
|
|
|
1746
|
|
|
1747 do_write = 1;
|
|
|
1748
|
|
|
1749 continue;
|
|
|
1750 }
|
|
|
1751
|
|
|
1752 break;
|
|
|
1753 }
|
|
|
1754
|
|
260
|
1755 if (downstream->data == r) {
|
|
|
1756 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1757 == NGX_ERROR)
|
|
|
1758 {
|
|
|
1759 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1760 return;
|
|
|
1761 }
|
|
130
|
1762 }
|
|
|
1763
|
|
276
|
1764 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1765 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1766
|
|
|
1767 } else if (downstream->write->timer_set) {
|
|
|
1768 ngx_del_timer(downstream->write);
|
|
130
|
1769 }
|
|
|
1770
|
|
260
|
1771 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1772 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1773 return;
|
|
|
1774 }
|
|
|
1775
|
|
276
|
1776 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1777 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1778
|
|
|
1779 } else if (upstream->read->timer_set) {
|
|
|
1780 ngx_del_timer(upstream->read);
|
|
130
|
1781 }
|
|
|
1782 }
|
|
|
1783
|
|
|
1784
|
|
|
1785 static ngx_int_t
|
|
|
1786 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1787 {
|
|
|
1788 return NGX_OK;
|
|
|
1789 }
|
|
|
1790
|
|
|
1791
|
|
|
1792 static ngx_int_t
|
|
|
1793 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1794 {
|
|
|
1795 ngx_http_request_t *r = data;
|
|
|
1796
|
|
|
1797 ngx_buf_t *b;
|
|
|
1798 ngx_chain_t *cl, **ll;
|
|
|
1799 ngx_http_upstream_t *u;
|
|
|
1800
|
|
|
1801 u = r->upstream;
|
|
|
1802
|
|
|
1803 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1804 ll = &cl->next;
|
|
|
1805 }
|
|
|
1806
|
|
|
1807 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1808 if (cl == NULL) {
|
|
|
1809 return NGX_ERROR;
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 *ll = cl;
|
|
|
1813
|
|
|
1814 cl->buf->flush = 1;
|
|
|
1815 cl->buf->memory = 1;
|
|
|
1816
|
|
|
1817 b = &u->buffer;
|
|
|
1818
|
|
|
1819 cl->buf->pos = b->last;
|
|
|
1820 b->last += bytes;
|
|
|
1821 cl->buf->last = b->last;
|
|
|
1822
|
|
|
1823 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1824 return NGX_OK;
|
|
|
1825 }
|
|
|
1826
|
|
|
1827 u->length -= bytes;
|
|
|
1828
|
|
|
1829 return NGX_OK;
|
|
|
1830 }
|
|
|
1831
|
|
|
1832
|
|
|
1833 static void
|
|
58
|
1834 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1835 {
|
|
|
1836 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1837 }
|
|
|
1838
|
|
|
1839
|
|
|
1840 static void
|
|
36
|
1841 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1842 {
|
|
58
|
1843 ngx_event_pipe_t *p;
|
|
132
|
1844 ngx_connection_t *c, *downstream;
|
|
284
|
1845 ngx_http_log_ctx_t *ctx;
|
|
28
|
1846 ngx_http_request_t *r;
|
|
|
1847 ngx_http_upstream_t *u;
|
|
|
1848
|
|
|
1849 c = ev->data;
|
|
|
1850 r = c->data;
|
|
|
1851 u = r->upstream;
|
|
132
|
1852 downstream = r->connection;
|
|
28
|
1853
|
|
|
1854 if (ev->write) {
|
|
32
|
1855 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1856 "http upstream process downstream");
|
|
|
1857 c->log->action = "sending to client";
|
|
126
|
1858
|
|
28
|
1859 } else {
|
|
32
|
1860 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1861 "http upstream process upstream");
|
|
|
1862 c->log->action = "reading upstream";
|
|
284
|
1863
|
|
|
1864 ctx = c->log->data;
|
|
|
1865 ctx->current_request = r;
|
|
28
|
1866 }
|
|
126
|
1867
|
|
130
|
1868 p = u->pipe;
|
|
28
|
1869
|
|
|
1870 if (ev->timedout) {
|
|
|
1871 if (ev->write) {
|
|
76
|
1872 if (ev->delayed) {
|
|
|
1873
|
|
|
1874 ev->timedout = 0;
|
|
|
1875 ev->delayed = 0;
|
|
|
1876
|
|
|
1877 if (!ev->ready) {
|
|
|
1878 ngx_add_timer(ev, p->send_timeout);
|
|
|
1879
|
|
|
1880 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1881 {
|
|
|
1882 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1883 return;
|
|
|
1884 }
|
|
|
1885
|
|
|
1886 return;
|
|
|
1887 }
|
|
|
1888
|
|
|
1889 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1890
|
|
|
1891 if (downstream->destroyed) {
|
|
|
1892 return;
|
|
|
1893 }
|
|
|
1894
|
|
76
|
1895 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1896 return;
|
|
|
1897 }
|
|
|
1898
|
|
|
1899 } else {
|
|
|
1900 p->downstream_error = 1;
|
|
126
|
1901 c->timedout = 1;
|
|
160
|
1902 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1903 }
|
|
28
|
1904
|
|
|
1905 } else {
|
|
126
|
1906 p->upstream_error = 1;
|
|
160
|
1907 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1908 }
|
|
|
1909
|
|
|
1910 } else {
|
|
76
|
1911 if (ev->write && ev->delayed) {
|
|
|
1912 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1913 "http downstream delayed");
|
|
|
1914
|
|
|
1915 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1916 return;
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 return;
|
|
|
1920 }
|
|
|
1921
|
|
28
|
1922 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1923
|
|
|
1924 if (downstream->destroyed) {
|
|
|
1925 return;
|
|
|
1926 }
|
|
|
1927
|
|
28
|
1928 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1929 return;
|
|
|
1930 }
|
|
|
1931 }
|
|
126
|
1932
|
|
28
|
1933 if (u->peer.connection) {
|
|
|
1934
|
|
318
|
1935 if (u->store) {
|
|
|
1936
|
|
|
1937 if (p->upstream_eof && u->headers_in.status_n == NGX_HTTP_OK) {
|
|
|
1938
|
|
|
1939 ngx_http_upstream_store(r, u);
|
|
|
1940
|
|
|
1941 } else if ((p->upstream_error
|
|
|
1942 || (p->upstream_eof
|
|
|
1943 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
|
1944 && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
|
|
|
1945 {
|
|
|
1946 if (ngx_delete_file(u->pipe->temp_file->file.name.data)
|
|
|
1947 == NGX_FILE_ERROR)
|
|
|
1948 {
|
|
|
1949 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
1950 ngx_delete_file_n " \"%s\" failed",
|
|
|
1951 u->pipe->temp_file->file.name.data);
|
|
|
1952 }
|
|
|
1953 }
|
|
|
1954 }
|
|
|
1955
|
|
28
|
1956 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1957
|
|
340
|
1958 if (p->upstream_done && u->cacheable) {
|
|
28
|
1959 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1960 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1961 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1962 return;
|
|
|
1963 }
|
|
|
1964
|
|
340
|
1965 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
1966
|
|
|
1967 /* TODO: check length & update cache */
|
|
|
1968
|
|
|
1969 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1970 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1971 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1972 return;
|
|
|
1973 }
|
|
|
1974 }
|
|
|
1975
|
|
|
1976 #endif
|
|
|
1977
|
|
|
1978 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1979 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1980 "http upstream exit: %p", p->out);
|
|
28
|
1981 #if 0
|
|
|
1982 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1983 #endif
|
|
|
1984 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1985 return;
|
|
|
1986 }
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 if (p->downstream_error) {
|
|
32
|
1990 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1991 "http upstream downstream error");
|
|
28
|
1992
|
|
340
|
1993 if (!u->cacheable && u->peer.connection) {
|
|
28
|
1994 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1995 }
|
|
|
1996 }
|
|
|
1997 }
|
|
|
1998
|
|
|
1999
|
|
36
|
2000 static void
|
|
318
|
2001 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2002 {
|
|
|
2003 char *failed;
|
|
|
2004 u_char *name;
|
|
|
2005 size_t root;
|
|
|
2006 time_t lm;
|
|
|
2007 ngx_err_t err;
|
|
|
2008 ngx_str_t *temp, path, *last_modified;
|
|
|
2009 ngx_temp_file_t *tf;
|
|
|
2010
|
|
|
2011 if (u->pipe->temp_file->file.fd == NGX_INVALID_FILE) {
|
|
|
2012
|
|
|
2013 /* create file for empty 200 response */
|
|
|
2014
|
|
|
2015 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2016 if (tf == NULL) {
|
|
|
2017 return;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2021 tf->file.log = r->connection->log;
|
|
|
2022 tf->path = u->conf->temp_path;
|
|
|
2023 tf->pool = r->pool;
|
|
|
2024 tf->persistent = 1;
|
|
|
2025
|
|
|
2026 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2027 tf->persistent, tf->clean, tf->access)
|
|
|
2028 != NGX_OK)
|
|
|
2029 {
|
|
|
2030 return;
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 u->pipe->temp_file = tf;
|
|
|
2034 }
|
|
|
2035
|
|
|
2036 temp = &u->pipe->temp_file->file.name;
|
|
|
2037
|
|
|
2038 #if !(NGX_WIN32)
|
|
|
2039
|
|
320
|
2040 if (ngx_change_file_access(temp->data, u->conf->store_access)
|
|
|
2041 == NGX_FILE_ERROR)
|
|
|
2042 {
|
|
318
|
2043 err = ngx_errno;
|
|
|
2044 failed = ngx_change_file_access_n;
|
|
|
2045 name = temp->data;
|
|
|
2046
|
|
|
2047 goto failed;
|
|
|
2048 }
|
|
|
2049
|
|
|
2050 #endif
|
|
|
2051
|
|
|
2052 if (r->upstream->headers_in.last_modified) {
|
|
|
2053
|
|
|
2054 last_modified = &r->upstream->headers_in.last_modified->value;
|
|
|
2055
|
|
|
2056 lm = ngx_http_parse_time(last_modified->data, last_modified->len);
|
|
|
2057
|
|
|
2058 if (lm != NGX_ERROR) {
|
|
|
2059 if (ngx_set_file_time(temp->data, u->pipe->temp_file->file.fd, lm)
|
|
|
2060 != NGX_OK)
|
|
|
2061 {
|
|
|
2062 err = ngx_errno;
|
|
|
2063 failed = ngx_set_file_time_n;
|
|
|
2064 name = temp->data;
|
|
320
|
2065
|
|
318
|
2066 goto failed;
|
|
|
2067 }
|
|
|
2068 }
|
|
|
2069 }
|
|
|
2070
|
|
320
|
2071 if (u->conf->store_lengths == NULL) {
|
|
|
2072
|
|
|
2073 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2074
|
|
|
2075 } else {
|
|
|
2076 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2077 u->conf->store_values->elts)
|
|
|
2078 == NULL)
|
|
|
2079 {
|
|
|
2080 return;
|
|
|
2081 }
|
|
|
2082 }
|
|
318
|
2083
|
|
|
2084 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2085 "upstream stores \"%s\" to \"%s\"", temp->data, path.data);
|
|
|
2086
|
|
|
2087 failed = ngx_rename_file_n;
|
|
|
2088 name = path.data;
|
|
|
2089
|
|
|
2090 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2091 return;
|
|
|
2092 }
|
|
|
2093
|
|
|
2094 err = ngx_errno;
|
|
|
2095
|
|
|
2096 if (err == NGX_ENOENT) {
|
|
|
2097
|
|
320
|
2098 err = ngx_create_full_path(path.data,
|
|
|
2099 ngx_dir_access(u->conf->store_access));
|
|
318
|
2100 if (err == 0) {
|
|
|
2101 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2102 return;
|
|
|
2103 }
|
|
|
2104
|
|
|
2105 err = ngx_errno;
|
|
|
2106 }
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 #if (NGX_WIN32)
|
|
|
2110
|
|
|
2111 if (err == NGX_EEXIST) {
|
|
|
2112 if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
|
|
|
2113
|
|
|
2114 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2115 return;
|
|
|
2116 }
|
|
|
2117 }
|
|
|
2118
|
|
|
2119 err = ngx_errno;
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 #endif
|
|
|
2123
|
|
|
2124 failed:
|
|
|
2125
|
|
|
2126 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
|
|
|
2127 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2128 ngx_delete_file_n " \"%s\" failed",
|
|
|
2129 temp->data);
|
|
|
2130 }
|
|
|
2131
|
|
|
2132 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
|
|
|
2133 "%s \"%s\" failed", failed, name);
|
|
|
2134 }
|
|
|
2135
|
|
|
2136
|
|
|
2137 static void
|
|
36
|
2138 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2139 {
|
|
|
2140 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2141 "http upstream dummy handler");
|
|
|
2142 }
|
|
|
2143
|
|
|
2144
|
|
36
|
2145 static void
|
|
|
2146 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2147 ngx_uint_t ft_type)
|
|
28
|
2148 {
|
|
260
|
2149 ngx_uint_t status, state;
|
|
28
|
2150
|
|
|
2151 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2152 "http next upstream, %xi", ft_type);
|
|
28
|
2153
|
|
|
2154 #if 0
|
|
|
2155 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2156 #endif
|
|
|
2157
|
|
74
|
2158 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2159 state = NGX_PEER_NEXT;
|
|
74
|
2160 } else {
|
|
260
|
2161 state = NGX_PEER_FAILED;
|
|
28
|
2162 }
|
|
74
|
2163
|
|
326
|
2164 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2165 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2166 }
|
|
74
|
2167
|
|
28
|
2168 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2169 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2170 "upstream timed out");
|
|
|
2171 }
|
|
126
|
2172
|
|
28
|
2173 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2174 status = 0;
|
|
|
2175
|
|
|
2176 } else {
|
|
|
2177 switch(ft_type) {
|
|
|
2178
|
|
|
2179 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2180 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2181 break;
|
|
|
2182
|
|
|
2183 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2184 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2185 break;
|
|
|
2186
|
|
|
2187 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2188 status = NGX_HTTP_NOT_FOUND;
|
|
|
2189 break;
|
|
|
2190
|
|
|
2191 /*
|
|
|
2192 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2193 * never reach here
|
|
|
2194 */
|
|
|
2195
|
|
|
2196 default:
|
|
|
2197 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2198 }
|
|
|
2199 }
|
|
|
2200
|
|
132
|
2201 if (r->connection->error) {
|
|
28
|
2202 ngx_http_upstream_finalize_request(r, u,
|
|
|
2203 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2204 return;
|
|
|
2205 }
|
|
|
2206
|
|
|
2207 if (status) {
|
|
|
2208 u->state->status = status;
|
|
|
2209
|
|
74
|
2210 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2211
|
|
|
2212 #if (NGX_HTTP_CACHE)
|
|
|
2213
|
|
|
2214 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2215 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2216 ngx_http_send_cached_response(r));
|
|
28
|
2217 return;
|
|
|
2218 }
|
|
|
2219
|
|
|
2220 #endif
|
|
|
2221
|
|
|
2222 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2223 return;
|
|
|
2224 }
|
|
|
2225 }
|
|
|
2226
|
|
|
2227 if (u->peer.connection) {
|
|
|
2228 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2229 "close http upstream connection: %d",
|
|
|
2230 u->peer.connection->fd);
|
|
126
|
2231 #if (NGX_HTTP_SSL)
|
|
260
|
2232
|
|
126
|
2233 if (u->peer.connection->ssl) {
|
|
260
|
2234 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2235 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2236
|
|
|
2237 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2238 }
|
|
|
2239 #endif
|
|
260
|
2240
|
|
28
|
2241 ngx_close_connection(u->peer.connection);
|
|
|
2242 }
|
|
|
2243
|
|
|
2244 #if 0
|
|
|
2245 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2246 ngx_http_upstream_busy_lock(p);
|
|
|
2247 return;
|
|
|
2248 }
|
|
|
2249 #endif
|
|
|
2250
|
|
|
2251 ngx_http_upstream_connect(r, u);
|
|
|
2252 }
|
|
|
2253
|
|
|
2254
|
|
36
|
2255 static void
|
|
118
|
2256 ngx_http_upstream_cleanup(void *data)
|
|
|
2257 {
|
|
|
2258 ngx_http_request_t *r = data;
|
|
|
2259
|
|
|
2260 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2261 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2262
|
|
|
2263 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2264 }
|
|
|
2265
|
|
|
2266
|
|
|
2267 static void
|
|
36
|
2268 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2269 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2270 {
|
|
262
|
2271 ngx_time_t *tp;
|
|
112
|
2272
|
|
32
|
2273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2274 "finalize http upstream request: %i", rc);
|
|
28
|
2275
|
|
118
|
2276 *u->cleanup = NULL;
|
|
|
2277
|
|
262
|
2278 if (u->state->response_sec) {
|
|
112
|
2279 tp = ngx_timeofday();
|
|
262
|
2280 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2281 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2282 }
|
|
|
2283
|
|
28
|
2284 u->finalize_request(r, rc);
|
|
|
2285
|
|
260
|
2286 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2287
|
|
28
|
2288 if (u->peer.connection) {
|
|
260
|
2289
|
|
126
|
2290 #if (NGX_HTTP_SSL)
|
|
|
2291
|
|
|
2292 /* TODO: do not shutdown persistent connection */
|
|
|
2293
|
|
|
2294 if (u->peer.connection->ssl) {
|
|
260
|
2295
|
|
|
2296 /*
|
|
|
2297 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2298 * and do not wait its "close notify" shutdown alert.
|
|
|
2299 * It is acceptable according to the TLS standard.
|
|
|
2300 */
|
|
|
2301
|
|
|
2302 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2303
|
|
|
2304 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2305 }
|
|
|
2306 #endif
|
|
260
|
2307
|
|
|
2308 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2309 "close http upstream connection: %d",
|
|
|
2310 u->peer.connection->fd);
|
|
|
2311
|
|
28
|
2312 ngx_close_connection(u->peer.connection);
|
|
|
2313 }
|
|
|
2314
|
|
32
|
2315 u->peer.connection = NULL;
|
|
|
2316
|
|
112
|
2317 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2318 {
|
|
|
2319 rc = 0;
|
|
|
2320 }
|
|
|
2321
|
|
130
|
2322 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2323 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2324 "http upstream temp fd: %d",
|
|
130
|
2325 u->pipe->temp_file->file.fd);
|
|
28
|
2326 }
|
|
|
2327
|
|
|
2328 #if 0
|
|
|
2329 if (u->cache) {
|
|
|
2330 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2331 "http upstream cache fd: %d",
|
|
28
|
2332 u->cache->ctx.file.fd);
|
|
|
2333 }
|
|
|
2334 #endif
|
|
|
2335
|
|
64
|
2336 if (rc == NGX_DECLINED) {
|
|
|
2337 return;
|
|
|
2338 }
|
|
|
2339
|
|
32
|
2340 r->connection->log->action = "sending to client";
|
|
|
2341
|
|
314
|
2342 if (rc == 0) {
|
|
|
2343 if (r == r->main) {
|
|
|
2344 if (!r->post_action) {
|
|
|
2345 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
|
2346 }
|
|
|
2347
|
|
|
2348 } else {
|
|
|
2349 if (r->out) {
|
|
|
2350 rc = NGX_AGAIN;
|
|
|
2351 }
|
|
|
2352 }
|
|
28
|
2353 }
|
|
|
2354
|
|
|
2355 ngx_http_finalize_request(r, rc);
|
|
|
2356 }
|
|
|
2357
|
|
|
2358
|
|
58
|
2359 static ngx_int_t
|
|
|
2360 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2361 ngx_uint_t offset)
|
|
126
|
2362 {
|
|
58
|
2363 ngx_table_elt_t **ph;
|
|
126
|
2364
|
|
58
|
2365 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2366
|
|
|
2367 if (*ph == NULL) {
|
|
|
2368 *ph = h;
|
|
|
2369 }
|
|
|
2370
|
|
|
2371 return NGX_OK;
|
|
|
2372 }
|
|
|
2373
|
|
|
2374
|
|
|
2375 static ngx_int_t
|
|
|
2376 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2377 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2378 {
|
|
|
2379 ngx_array_t *pa;
|
|
|
2380 ngx_table_elt_t **ph;
|
|
|
2381
|
|
|
2382 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2383
|
|
|
2384 if (pa->elts == NULL) {
|
|
|
2385 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2386 {
|
|
|
2387 return NGX_ERROR;
|
|
|
2388 }
|
|
|
2389 }
|
|
|
2390
|
|
|
2391 ph = ngx_array_push(pa);
|
|
|
2392 if (ph == NULL) {
|
|
|
2393 return NGX_ERROR;
|
|
|
2394 }
|
|
|
2395
|
|
|
2396 *ph = h;
|
|
|
2397
|
|
|
2398 return NGX_OK;
|
|
|
2399 }
|
|
|
2400
|
|
|
2401
|
|
|
2402 static ngx_int_t
|
|
|
2403 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2404 ngx_uint_t offset)
|
|
|
2405 {
|
|
|
2406 return NGX_OK;
|
|
|
2407 }
|
|
|
2408
|
|
|
2409
|
|
|
2410 static ngx_int_t
|
|
76
|
2411 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2412 ngx_uint_t offset)
|
|
126
|
2413 {
|
|
76
|
2414 ngx_int_t n;
|
|
|
2415
|
|
|
2416 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2417
|
|
|
2418 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2419
|
|
|
2420 if (n != NGX_ERROR) {
|
|
|
2421 r->limit_rate = (size_t) n;
|
|
|
2422 }
|
|
|
2423
|
|
|
2424 return NGX_OK;
|
|
|
2425 }
|
|
|
2426
|
|
|
2427
|
|
|
2428 static ngx_int_t
|
|
198
|
2429 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2430 ngx_uint_t offset)
|
|
|
2431 {
|
|
|
2432 u_char c0, c1, c2;
|
|
|
2433
|
|
|
2434 if (r->upstream->conf->change_buffering) {
|
|
|
2435
|
|
|
2436 if (h->value.len == 2) {
|
|
|
2437 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2438 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2439
|
|
|
2440 if (c0 == 'n' && c1 == 'o') {
|
|
|
2441 r->upstream->buffering = 0;
|
|
|
2442 }
|
|
|
2443
|
|
|
2444 } else if (h->value.len == 3) {
|
|
|
2445 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2446 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2447 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2448
|
|
|
2449 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2450 r->upstream->buffering = 1;
|
|
|
2451 }
|
|
|
2452 }
|
|
|
2453 }
|
|
|
2454
|
|
|
2455 return NGX_OK;
|
|
|
2456 }
|
|
|
2457
|
|
|
2458
|
|
|
2459 static ngx_int_t
|
|
206
|
2460 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2461 ngx_uint_t offset)
|
|
|
2462 {
|
|
|
2463 r->headers_out.override_charset = &h->value;
|
|
|
2464
|
|
|
2465 return NGX_OK;
|
|
|
2466 }
|
|
|
2467
|
|
|
2468
|
|
|
2469 static ngx_int_t
|
|
58
|
2470 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2471 ngx_uint_t offset)
|
|
|
2472 {
|
|
122
|
2473 ngx_table_elt_t *ho, **ph;
|
|
58
|
2474
|
|
|
2475 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2476 if (ho == NULL) {
|
|
|
2477 return NGX_ERROR;
|
|
|
2478 }
|
|
|
2479
|
|
|
2480 *ho = *h;
|
|
|
2481
|
|
122
|
2482 if (offset) {
|
|
|
2483 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2484 *ph = ho;
|
|
|
2485 }
|
|
|
2486
|
|
58
|
2487 return NGX_OK;
|
|
|
2488 }
|
|
|
2489
|
|
|
2490
|
|
|
2491 static ngx_int_t
|
|
|
2492 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2493 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2494 {
|
|
|
2495 ngx_array_t *pa;
|
|
|
2496 ngx_table_elt_t *ho, **ph;
|
|
|
2497
|
|
|
2498 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2499
|
|
|
2500 if (pa->elts == NULL) {
|
|
|
2501 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2502 {
|
|
|
2503 return NGX_ERROR;
|
|
|
2504 }
|
|
|
2505 }
|
|
|
2506
|
|
|
2507 ph = ngx_array_push(pa);
|
|
|
2508 if (ph == NULL) {
|
|
|
2509 return NGX_ERROR;
|
|
|
2510 }
|
|
|
2511
|
|
|
2512 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2513 if (ho == NULL) {
|
|
|
2514 return NGX_ERROR;
|
|
|
2515 }
|
|
|
2516
|
|
|
2517 *ho = *h;
|
|
|
2518 *ph = ho;
|
|
|
2519
|
|
|
2520 return NGX_OK;
|
|
|
2521 }
|
|
|
2522
|
|
|
2523
|
|
|
2524 static ngx_int_t
|
|
|
2525 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2526 ngx_uint_t offset)
|
|
|
2527 {
|
|
206
|
2528 u_char *p, *last;
|
|
|
2529
|
|
|
2530 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2531 r->headers_out.content_type = h->value;
|
|
|
2532
|
|
206
|
2533 for (p = h->value.data; *p; p++) {
|
|
|
2534
|
|
|
2535 if (*p != ';') {
|
|
|
2536 continue;
|
|
|
2537 }
|
|
|
2538
|
|
|
2539 last = p;
|
|
|
2540
|
|
|
2541 while (*++p == ' ') { /* void */ }
|
|
|
2542
|
|
286
|
2543 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2544 continue;
|
|
|
2545 }
|
|
|
2546
|
|
|
2547 p += 8;
|
|
|
2548
|
|
|
2549 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2550
|
|
|
2551 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2552 r->headers_out.charset.data = p;
|
|
292
|
2553
|
|
|
2554 return NGX_OK;
|
|
206
|
2555 }
|
|
|
2556
|
|
58
|
2557 return NGX_OK;
|
|
|
2558 }
|
|
|
2559
|
|
|
2560
|
|
|
2561 static ngx_int_t
|
|
|
2562 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2563 ngx_uint_t offset)
|
|
|
2564 {
|
|
|
2565 ngx_table_elt_t *ho;
|
|
|
2566
|
|
|
2567 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2568 if (ho == NULL) {
|
|
|
2569 return NGX_ERROR;
|
|
|
2570 }
|
|
|
2571
|
|
|
2572 *ho = *h;
|
|
|
2573
|
|
|
2574 r->headers_out.content_length = ho;
|
|
|
2575 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2576
|
|
|
2577 return NGX_OK;
|
|
|
2578 }
|
|
|
2579
|
|
|
2580
|
|
|
2581 static ngx_int_t
|
|
|
2582 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2583 ngx_uint_t offset)
|
|
|
2584 {
|
|
|
2585 ngx_int_t rc;
|
|
|
2586 ngx_table_elt_t *ho;
|
|
|
2587
|
|
|
2588 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2589 if (ho == NULL) {
|
|
|
2590 return NGX_ERROR;
|
|
|
2591 }
|
|
|
2592
|
|
|
2593 *ho = *h;
|
|
|
2594
|
|
|
2595 if (r->upstream->rewrite_redirect) {
|
|
|
2596 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2597
|
|
78
|
2598 if (rc == NGX_DECLINED) {
|
|
|
2599 return NGX_OK;
|
|
|
2600 }
|
|
|
2601
|
|
58
|
2602 if (rc == NGX_OK) {
|
|
|
2603 r->headers_out.location = ho;
|
|
|
2604
|
|
|
2605 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2606 "rewritten location: \"%V\"", &ho->value);
|
|
|
2607 }
|
|
|
2608
|
|
|
2609 return rc;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 /*
|
|
|
2613 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2614 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2615 */
|
|
|
2616
|
|
|
2617 return NGX_OK;
|
|
|
2618 }
|
|
|
2619
|
|
|
2620
|
|
|
2621 static ngx_int_t
|
|
|
2622 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2623 ngx_uint_t offset)
|
|
|
2624 {
|
|
|
2625 u_char *p;
|
|
|
2626 ngx_int_t rc;
|
|
|
2627 ngx_table_elt_t *ho;
|
|
|
2628
|
|
|
2629 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2630 if (ho == NULL) {
|
|
|
2631 return NGX_ERROR;
|
|
|
2632 }
|
|
|
2633
|
|
|
2634 *ho = *h;
|
|
|
2635
|
|
|
2636 if (r->upstream->rewrite_redirect) {
|
|
|
2637
|
|
340
|
2638 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2639
|
|
|
2640 if (p) {
|
|
|
2641 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2642
|
|
|
2643 } else {
|
|
|
2644 return NGX_OK;
|
|
|
2645 }
|
|
|
2646
|
|
78
|
2647 if (rc == NGX_DECLINED) {
|
|
|
2648 return NGX_OK;
|
|
|
2649 }
|
|
|
2650
|
|
58
|
2651 #if (NGX_DEBUG)
|
|
|
2652 if (rc == NGX_OK) {
|
|
|
2653 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2654 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2655 }
|
|
|
2656 #endif
|
|
|
2657
|
|
|
2658 return rc;
|
|
|
2659 }
|
|
|
2660
|
|
|
2661 return NGX_OK;
|
|
|
2662 }
|
|
|
2663
|
|
|
2664
|
|
|
2665 #if (NGX_HTTP_GZIP)
|
|
|
2666
|
|
|
2667 static ngx_int_t
|
|
|
2668 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2669 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2670 {
|
|
|
2671 ngx_table_elt_t *ho;
|
|
|
2672
|
|
|
2673 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2674 if (ho == NULL) {
|
|
|
2675 return NGX_ERROR;
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 *ho = *h;
|
|
|
2679
|
|
|
2680 r->headers_out.content_encoding = ho;
|
|
|
2681
|
|
|
2682 return NGX_OK;
|
|
|
2683 }
|
|
|
2684
|
|
|
2685 #endif
|
|
|
2686
|
|
|
2687
|
|
36
|
2688 static ngx_int_t
|
|
122
|
2689 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2690 {
|
|
260
|
2691 ngx_http_variable_t *var, *v;
|
|
28
|
2692
|
|
122
|
2693 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2694 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2695 if (var == NULL) {
|
|
|
2696 return NGX_ERROR;
|
|
|
2697 }
|
|
|
2698
|
|
186
|
2699 var->get_handler = v->get_handler;
|
|
122
|
2700 var->data = v->data;
|
|
|
2701 }
|
|
|
2702
|
|
28
|
2703 return NGX_OK;
|
|
|
2704 }
|
|
58
|
2705
|
|
|
2706
|
|
122
|
2707 static ngx_int_t
|
|
298
|
2708 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2709 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2710 {
|
|
|
2711 u_char *p;
|
|
|
2712 size_t len;
|
|
|
2713 ngx_uint_t i;
|
|
|
2714 ngx_http_upstream_state_t *state;
|
|
|
2715
|
|
|
2716 v->valid = 1;
|
|
340
|
2717 v->no_cacheable = 0;
|
|
298
|
2718 v->not_found = 0;
|
|
|
2719
|
|
|
2720 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2721 v->not_found = 1;
|
|
|
2722 return NGX_OK;
|
|
|
2723 }
|
|
|
2724
|
|
|
2725 len = 0;
|
|
|
2726 state = r->upstream_states->elts;
|
|
|
2727
|
|
|
2728 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2729 if (state[i].peer) {
|
|
|
2730 len += state[i].peer->len + 2;
|
|
|
2731
|
|
|
2732 } else {
|
|
|
2733 len += 3;
|
|
|
2734 }
|
|
|
2735 }
|
|
|
2736
|
|
|
2737 p = ngx_palloc(r->pool, len);
|
|
|
2738 if (p == NULL) {
|
|
|
2739 return NGX_ERROR;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742 v->data = p;
|
|
|
2743
|
|
|
2744 i = 0;
|
|
|
2745
|
|
|
2746 for ( ;; ) {
|
|
|
2747 if (state[i].peer) {
|
|
|
2748 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2749 }
|
|
|
2750
|
|
|
2751 if (++i == r->upstream_states->nelts) {
|
|
|
2752 break;
|
|
|
2753 }
|
|
|
2754
|
|
|
2755 if (state[i].peer) {
|
|
|
2756 *p++ = ',';
|
|
|
2757 *p++ = ' ';
|
|
|
2758
|
|
|
2759 } else {
|
|
|
2760 *p++ = ' ';
|
|
|
2761 *p++ = ':';
|
|
|
2762 *p++ = ' ';
|
|
|
2763
|
|
|
2764 if (++i == r->upstream_states->nelts) {
|
|
|
2765 break;
|
|
|
2766 }
|
|
|
2767
|
|
|
2768 continue;
|
|
|
2769 }
|
|
|
2770 }
|
|
|
2771
|
|
|
2772 v->len = p - v->data;
|
|
|
2773
|
|
|
2774 return NGX_OK;
|
|
|
2775 }
|
|
|
2776
|
|
|
2777
|
|
|
2778 static ngx_int_t
|
|
122
|
2779 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2780 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2781 {
|
|
|
2782 u_char *p;
|
|
|
2783 size_t len;
|
|
|
2784 ngx_uint_t i;
|
|
|
2785 ngx_http_upstream_state_t *state;
|
|
|
2786
|
|
|
2787 v->valid = 1;
|
|
340
|
2788 v->no_cacheable = 0;
|
|
122
|
2789 v->not_found = 0;
|
|
|
2790
|
|
296
|
2791 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2792 v->not_found = 1;
|
|
|
2793 return NGX_OK;
|
|
|
2794 }
|
|
|
2795
|
|
296
|
2796 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2797
|
|
|
2798 p = ngx_palloc(r->pool, len);
|
|
|
2799 if (p == NULL) {
|
|
|
2800 return NGX_ERROR;
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 v->data = p;
|
|
|
2804
|
|
|
2805 i = 0;
|
|
296
|
2806 state = r->upstream_states->elts;
|
|
122
|
2807
|
|
|
2808 for ( ;; ) {
|
|
296
|
2809 if (state[i].status) {
|
|
|
2810 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2811
|
|
|
2812 } else {
|
|
296
|
2813 *p++ = '-';
|
|
122
|
2814 }
|
|
|
2815
|
|
296
|
2816 if (++i == r->upstream_states->nelts) {
|
|
122
|
2817 break;
|
|
|
2818 }
|
|
|
2819
|
|
296
|
2820 if (state[i].peer) {
|
|
|
2821 *p++ = ',';
|
|
|
2822 *p++ = ' ';
|
|
|
2823
|
|
|
2824 } else {
|
|
|
2825 *p++ = ' ';
|
|
|
2826 *p++ = ':';
|
|
|
2827 *p++ = ' ';
|
|
|
2828
|
|
|
2829 if (++i == r->upstream_states->nelts) {
|
|
|
2830 break;
|
|
|
2831 }
|
|
|
2832
|
|
|
2833 continue;
|
|
|
2834 }
|
|
122
|
2835 }
|
|
|
2836
|
|
|
2837 v->len = p - v->data;
|
|
|
2838
|
|
|
2839 return NGX_OK;
|
|
|
2840 }
|
|
|
2841
|
|
|
2842
|
|
|
2843 static ngx_int_t
|
|
|
2844 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2845 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2846 {
|
|
|
2847 u_char *p;
|
|
|
2848 size_t len;
|
|
|
2849 ngx_uint_t i;
|
|
262
|
2850 ngx_msec_int_t ms;
|
|
122
|
2851 ngx_http_upstream_state_t *state;
|
|
|
2852
|
|
|
2853 v->valid = 1;
|
|
340
|
2854 v->no_cacheable = 0;
|
|
122
|
2855 v->not_found = 0;
|
|
|
2856
|
|
296
|
2857 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2858 v->not_found = 1;
|
|
|
2859 return NGX_OK;
|
|
|
2860 }
|
|
|
2861
|
|
296
|
2862 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
2863
|
|
|
2864 p = ngx_palloc(r->pool, len);
|
|
|
2865 if (p == NULL) {
|
|
|
2866 return NGX_ERROR;
|
|
|
2867 }
|
|
|
2868
|
|
|
2869 v->data = p;
|
|
|
2870
|
|
|
2871 i = 0;
|
|
296
|
2872 state = r->upstream_states->elts;
|
|
122
|
2873
|
|
|
2874 for ( ;; ) {
|
|
296
|
2875 if (state[i].status) {
|
|
346
|
2876 ms = (ngx_msec_int_t)
|
|
|
2877 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
2878 ms = (ms >= 0) ? ms : 0;
|
|
|
2879 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
2880
|
|
|
2881 } else {
|
|
|
2882 *p++ = '-';
|
|
122
|
2883 }
|
|
|
2884
|
|
296
|
2885 if (++i == r->upstream_states->nelts) {
|
|
122
|
2886 break;
|
|
|
2887 }
|
|
|
2888
|
|
296
|
2889 if (state[i].peer) {
|
|
|
2890 *p++ = ',';
|
|
|
2891 *p++ = ' ';
|
|
|
2892
|
|
|
2893 } else {
|
|
|
2894 *p++ = ' ';
|
|
|
2895 *p++ = ':';
|
|
|
2896 *p++ = ' ';
|
|
|
2897
|
|
|
2898 if (++i == r->upstream_states->nelts) {
|
|
|
2899 break;
|
|
|
2900 }
|
|
|
2901
|
|
|
2902 continue;
|
|
|
2903 }
|
|
122
|
2904 }
|
|
|
2905
|
|
|
2906 v->len = p - v->data;
|
|
|
2907
|
|
|
2908 return NGX_OK;
|
|
|
2909 }
|
|
|
2910
|
|
|
2911
|
|
296
|
2912 ngx_int_t
|
|
|
2913 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
2914 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2915 {
|
|
|
2916 if (r->upstream == NULL) {
|
|
|
2917 v->not_found = 1;
|
|
|
2918 return NGX_OK;
|
|
|
2919 }
|
|
|
2920
|
|
|
2921 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
2922 &r->upstream->headers_in.headers.part,
|
|
|
2923 sizeof("upstream_http_") - 1);
|
|
|
2924 }
|
|
|
2925
|
|
|
2926
|
|
200
|
2927 static char *
|
|
|
2928 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2929 {
|
|
260
|
2930 char *rv;
|
|
|
2931 void *mconf;
|
|
|
2932 ngx_str_t *value;
|
|
|
2933 ngx_url_t u;
|
|
|
2934 ngx_uint_t m;
|
|
|
2935 ngx_conf_t pcf;
|
|
|
2936 ngx_http_module_t *module;
|
|
|
2937 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
2938 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2939
|
|
|
2940 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2941
|
|
|
2942 value = cf->args->elts;
|
|
|
2943 u.host = value[1];
|
|
|
2944 u.no_resolve = 1;
|
|
|
2945
|
|
|
2946 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
2947 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
2948 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
2949 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
2950 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
2951 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
2952 if (uscf == NULL) {
|
|
|
2953 return NGX_CONF_ERROR;
|
|
|
2954 }
|
|
|
2955
|
|
200
|
2956
|
|
|
2957 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2958 if (ctx == NULL) {
|
|
|
2959 return NGX_CONF_ERROR;
|
|
|
2960 }
|
|
|
2961
|
|
260
|
2962 http_ctx = cf->ctx;
|
|
|
2963 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
2964
|
|
|
2965 /* the upstream{}'s srv_conf */
|
|
|
2966
|
|
|
2967 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2968 if (ctx->srv_conf == NULL) {
|
|
|
2969 return NGX_CONF_ERROR;
|
|
|
2970 }
|
|
|
2971
|
|
|
2972 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2973
|
|
260
|
2974 uscf->srv_conf = ctx->srv_conf;
|
|
|
2975
|
|
200
|
2976
|
|
|
2977 /* the upstream{}'s loc_conf */
|
|
|
2978
|
|
|
2979 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2980 if (ctx->loc_conf == NULL) {
|
|
|
2981 return NGX_CONF_ERROR;
|
|
|
2982 }
|
|
|
2983
|
|
|
2984 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2985 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2986 continue;
|
|
|
2987 }
|
|
|
2988
|
|
|
2989 module = ngx_modules[m]->ctx;
|
|
|
2990
|
|
260
|
2991 if (module->create_srv_conf) {
|
|
|
2992 mconf = module->create_srv_conf(cf);
|
|
|
2993 if (mconf == NULL) {
|
|
|
2994 return NGX_CONF_ERROR;
|
|
|
2995 }
|
|
|
2996
|
|
|
2997 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2998 }
|
|
|
2999
|
|
200
|
3000 if (module->create_loc_conf) {
|
|
|
3001 mconf = module->create_loc_conf(cf);
|
|
|
3002 if (mconf == NULL) {
|
|
|
3003 return NGX_CONF_ERROR;
|
|
|
3004 }
|
|
|
3005
|
|
|
3006 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3007 }
|
|
|
3008 }
|
|
|
3009
|
|
|
3010
|
|
|
3011 /* parse inside upstream{} */
|
|
|
3012
|
|
|
3013 pcf = *cf;
|
|
|
3014 cf->ctx = ctx;
|
|
|
3015 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3016
|
|
|
3017 rv = ngx_conf_parse(cf, NULL);
|
|
|
3018
|
|
|
3019 *cf = pcf;
|
|
|
3020
|
|
|
3021 if (rv != NGX_CONF_OK) {
|
|
|
3022 return rv;
|
|
|
3023 }
|
|
|
3024
|
|
|
3025 if (uscf->servers == NULL) {
|
|
|
3026 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3027 "no servers are inside upstream");
|
|
|
3028 return NGX_CONF_ERROR;
|
|
|
3029 }
|
|
|
3030
|
|
|
3031 return rv;
|
|
|
3032 }
|
|
|
3033
|
|
|
3034
|
|
|
3035 static char *
|
|
|
3036 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3037 {
|
|
|
3038 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3039
|
|
260
|
3040 time_t fail_timeout;
|
|
|
3041 ngx_str_t *value, s;
|
|
|
3042 ngx_url_t u;
|
|
|
3043 ngx_int_t weight, max_fails;
|
|
|
3044 ngx_uint_t i;
|
|
|
3045 ngx_http_upstream_server_t *us;
|
|
200
|
3046
|
|
|
3047 if (uscf->servers == NULL) {
|
|
260
|
3048 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3049 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3050 if (uscf->servers == NULL) {
|
|
|
3051 return NGX_CONF_ERROR;
|
|
|
3052 }
|
|
|
3053 }
|
|
|
3054
|
|
260
|
3055 us = ngx_array_push(uscf->servers);
|
|
|
3056 if (us == NULL) {
|
|
200
|
3057 return NGX_CONF_ERROR;
|
|
|
3058 }
|
|
|
3059
|
|
260
|
3060 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3061
|
|
200
|
3062 value = cf->args->elts;
|
|
|
3063
|
|
|
3064 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3065
|
|
|
3066 u.url = value[1];
|
|
266
|
3067 u.default_port = 80;
|
|
200
|
3068
|
|
340
|
3069 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3070 if (u.err) {
|
|
|
3071 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3072 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3073 }
|
|
|
3074
|
|
|
3075 return NGX_CONF_ERROR;
|
|
|
3076 }
|
|
|
3077
|
|
212
|
3078 weight = 1;
|
|
260
|
3079 max_fails = 1;
|
|
|
3080 fail_timeout = 10;
|
|
|
3081
|
|
|
3082 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3083
|
|
|
3084 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3085
|
|
|
3086 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3087 goto invalid;
|
|
|
3088 }
|
|
|
3089
|
|
|
3090 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3091
|
|
|
3092 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3093 goto invalid;
|
|
|
3094 }
|
|
|
3095
|
|
260
|
3096 continue;
|
|
|
3097 }
|
|
|
3098
|
|
|
3099 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3100
|
|
|
3101 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3102 goto invalid;
|
|
|
3103 }
|
|
|
3104
|
|
|
3105 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3106
|
|
|
3107 if (max_fails == NGX_ERROR) {
|
|
|
3108 goto invalid;
|
|
|
3109 }
|
|
|
3110
|
|
|
3111 continue;
|
|
212
|
3112 }
|
|
260
|
3113
|
|
|
3114 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3115
|
|
|
3116 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3117 goto invalid;
|
|
|
3118 }
|
|
|
3119
|
|
|
3120 s.len = value[i].len - 13;
|
|
|
3121 s.data = &value[i].data[13];
|
|
|
3122
|
|
|
3123 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3124
|
|
|
3125 if (fail_timeout < 0) {
|
|
|
3126 goto invalid;
|
|
|
3127 }
|
|
|
3128
|
|
|
3129 continue;
|
|
|
3130 }
|
|
|
3131
|
|
326
|
3132 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3133
|
|
|
3134 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3135 goto invalid;
|
|
|
3136 }
|
|
|
3137
|
|
|
3138 us->backup = 1;
|
|
|
3139
|
|
|
3140 continue;
|
|
|
3141 }
|
|
|
3142
|
|
260
|
3143 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3144
|
|
|
3145 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3146 goto invalid;
|
|
|
3147 }
|
|
|
3148
|
|
|
3149 us->down = 1;
|
|
|
3150
|
|
|
3151 continue;
|
|
|
3152 }
|
|
|
3153
|
|
|
3154 goto invalid;
|
|
212
|
3155 }
|
|
|
3156
|
|
260
|
3157 us->addrs = u.addrs;
|
|
|
3158 us->naddrs = u.naddrs;
|
|
|
3159 us->weight = weight;
|
|
|
3160 us->max_fails = max_fails;
|
|
|
3161 us->fail_timeout = fail_timeout;
|
|
200
|
3162
|
|
|
3163 return NGX_CONF_OK;
|
|
212
|
3164
|
|
|
3165 invalid:
|
|
|
3166
|
|
260
|
3167 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3168 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3169
|
|
|
3170 return NGX_CONF_ERROR;
|
|
200
|
3171 }
|
|
|
3172
|
|
|
3173
|
|
|
3174 ngx_http_upstream_srv_conf_t *
|
|
260
|
3175 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3176 {
|
|
|
3177 ngx_uint_t i;
|
|
260
|
3178 ngx_http_upstream_server_t *us;
|
|
200
|
3179 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3180 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3181
|
|
260
|
3182 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3183
|
|
340
|
3184 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3185 if (u->err) {
|
|
|
3186 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3187 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3188 }
|
|
|
3189
|
|
|
3190 return NULL;
|
|
|
3191 }
|
|
|
3192 }
|
|
|
3193
|
|
|
3194 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3195
|
|
|
3196 uscfp = umcf->upstreams.elts;
|
|
|
3197
|
|
|
3198 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3199
|
|
|
3200 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3201 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3202 != 0)
|
|
|
3203 {
|
|
200
|
3204 continue;
|
|
|
3205 }
|
|
|
3206
|
|
260
|
3207 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3208 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3209 {
|
|
260
|
3210 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3211 "duplicate upstream \"%V\"", &u->host);
|
|
|
3212 return NULL;
|
|
200
|
3213 }
|
|
260
|
3214
|
|
266
|
3215 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3216 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3217 "upstream \"%V\" may not have port %d",
|
|
|
3218 &u->host, u->port);
|
|
|
3219 return NULL;
|
|
|
3220 }
|
|
|
3221
|
|
|
3222 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3223 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3224 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3225 &u->host, uscfp[i]->port,
|
|
336
|
3226 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3227 return NULL;
|
|
|
3228 }
|
|
|
3229
|
|
|
3230 if (uscfp[i]->port != u->port) {
|
|
|
3231 continue;
|
|
260
|
3232 }
|
|
|
3233
|
|
324
|
3234 if (uscfp[i]->default_port && u->default_port
|
|
|
3235 && uscfp[i]->default_port != u->default_port)
|
|
|
3236 {
|
|
|
3237 continue;
|
|
|
3238 }
|
|
|
3239
|
|
260
|
3240 return uscfp[i];
|
|
200
|
3241 }
|
|
|
3242
|
|
|
3243 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3244 if (uscf == NULL) {
|
|
|
3245 return NULL;
|
|
|
3246 }
|
|
|
3247
|
|
260
|
3248 uscf->flags = flags;
|
|
200
|
3249 uscf->host = u->host;
|
|
336
|
3250 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3251 uscf->line = cf->conf_file->line;
|
|
266
|
3252 uscf->port = u->port;
|
|
|
3253 uscf->default_port = u->default_port;
|
|
260
|
3254
|
|
|
3255 if (u->naddrs == 1) {
|
|
|
3256 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3257 sizeof(ngx_http_upstream_server_t));
|
|
|
3258 if (uscf->servers == NULL) {
|
|
|
3259 return NGX_CONF_ERROR;
|
|
|
3260 }
|
|
|
3261
|
|
|
3262 us = ngx_array_push(uscf->servers);
|
|
|
3263 if (us == NULL) {
|
|
|
3264 return NGX_CONF_ERROR;
|
|
|
3265 }
|
|
|
3266
|
|
|
3267 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3268
|
|
|
3269 us->addrs = u->addrs;
|
|
|
3270 us->naddrs = u->naddrs;
|
|
|
3271 }
|
|
200
|
3272
|
|
|
3273 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3274 if (uscfp == NULL) {
|
|
|
3275 return NULL;
|
|
|
3276 }
|
|
|
3277
|
|
|
3278 *uscfp = uscf;
|
|
|
3279
|
|
|
3280 return uscf;
|
|
|
3281 }
|
|
|
3282
|
|
|
3283
|
|
58
|
3284 static void *
|
|
|
3285 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3286 {
|
|
|
3287 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3288
|
|
|
3289 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3290 if (umcf == NULL) {
|
|
|
3291 return NULL;
|
|
|
3292 }
|
|
|
3293
|
|
200
|
3294 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3295 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3296 != NGX_OK)
|
|
|
3297 {
|
|
|
3298 return NGX_CONF_ERROR;
|
|
|
3299 }
|
|
|
3300
|
|
58
|
3301 return umcf;
|
|
|
3302 }
|
|
|
3303
|
|
|
3304
|
|
|
3305 static char *
|
|
200
|
3306 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3307 {
|
|
|
3308 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3309
|
|
200
|
3310 ngx_uint_t i;
|
|
|
3311 ngx_array_t headers_in;
|
|
|
3312 ngx_hash_key_t *hk;
|
|
|
3313 ngx_hash_init_t hash;
|
|
260
|
3314 ngx_http_upstream_init_pt init;
|
|
200
|
3315 ngx_http_upstream_header_t *header;
|
|
|
3316 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3317
|
|
|
3318 uscfp = umcf->upstreams.elts;
|
|
|
3319
|
|
|
3320 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3321
|
|
|
3322 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3323 ngx_http_upstream_init_round_robin;
|
|
|
3324
|
|
|
3325 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3326 return NGX_CONF_ERROR;
|
|
|
3327 }
|
|
|
3328 }
|
|
198
|
3329
|
|
212
|
3330
|
|
260
|
3331 /* upstream_headers_in_hash */
|
|
|
3332
|
|
198
|
3333 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3334 != NGX_OK)
|
|
58
|
3335 {
|
|
|
3336 return NGX_CONF_ERROR;
|
|
|
3337 }
|
|
|
3338
|
|
198
|
3339 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3340 hk = ngx_array_push(&headers_in);
|
|
|
3341 if (hk == NULL) {
|
|
|
3342 return NGX_CONF_ERROR;
|
|
|
3343 }
|
|
|
3344
|
|
|
3345 hk->key = header->name;
|
|
|
3346 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3347 hk->value = header;
|
|
|
3348 }
|
|
|
3349
|
|
|
3350 hash.hash = &umcf->headers_in_hash;
|
|
|
3351 hash.key = ngx_hash_key_lc;
|
|
|
3352 hash.max_size = 512;
|
|
244
|
3353 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3354 hash.name = "upstream_headers_in_hash";
|
|
|
3355 hash.pool = cf->pool;
|
|
|
3356 hash.temp_pool = NULL;
|
|
|
3357
|
|
|
3358 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3359 return NGX_CONF_ERROR;
|
|
|
3360 }
|
|
58
|
3361
|
|
|
3362 return NGX_CONF_OK;
|
|
|
3363 }
|
