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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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24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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25 ngx_http_upstream_t *u);
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130
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26 static void
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27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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31 ssize_t bytes);
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58
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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35 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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37 static void ngx_http_upstream_cleanup(void *data);
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28
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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40
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58
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41 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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43 static ngx_int_t
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44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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45 ngx_table_elt_t *h, ngx_uint_t offset);
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46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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50 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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52 static ngx_int_t ngx_http_upstream_process_charset(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_copy_header_line(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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56 static ngx_int_t
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57 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t ngx_http_upstream_copy_content_length(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_rewrite_location(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_rewrite_refresh(ngx_http_request_t *r,
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66 ngx_table_elt_t *h, ngx_uint_t offset);
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67 #if (NGX_HTTP_GZIP)
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68 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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70 #endif
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71
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28
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72 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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73 uintptr_t data);
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74 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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75 u_char *buf, ngx_http_log_op_t *op);
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122
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76 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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77 uintptr_t data);
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112
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78 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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79 u_char *buf, ngx_http_log_op_t *op);
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28
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80
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122
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81 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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82 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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83 ngx_http_variable_value_t *v, uintptr_t data);
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84 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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85 ngx_http_variable_value_t *v, uintptr_t data);
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86
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200
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87 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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88 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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89 void *conf);
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90
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58
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91 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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92 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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93
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126
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94 #if (NGX_HTTP_SSL)
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140
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95 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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96 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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97 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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98 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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99 ngx_peer_t *peer);
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100 #endif
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101
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58
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102
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103 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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104
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105 { ngx_string("Status"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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108 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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109
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110 { ngx_string("Content-Type"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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113 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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114
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115 { ngx_string("Content-Length"),
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116 ngx_http_upstream_process_header_line,
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117 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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118 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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119
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120 { ngx_string("Date"),
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121 ngx_http_upstream_process_header_line,
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122 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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123 ngx_http_upstream_copy_header_line,
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124 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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125
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126 { ngx_string("Server"),
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127 ngx_http_upstream_process_header_line,
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128 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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129 ngx_http_upstream_copy_header_line,
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130 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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131
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78
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132 { ngx_string("WWW-Authenticate"),
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133 ngx_http_upstream_process_header_line,
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134 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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135 ngx_http_upstream_copy_header_line, 0, 0 },
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136
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58
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137 { ngx_string("Location"),
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138 ngx_http_upstream_ignore_header_line, 0,
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64
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139 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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140
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141 { ngx_string("Refresh"),
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142 ngx_http_upstream_ignore_header_line, 0,
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64
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143 ngx_http_upstream_rewrite_refresh, 0, 0 },
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144
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145 { ngx_string("Set-Cookie"),
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146 ngx_http_upstream_ignore_header_line, 0,
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80
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147 ngx_http_upstream_copy_header_line, 0, 1 },
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148
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149 { ngx_string("Content-Disposition"),
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150 ngx_http_upstream_ignore_header_line, 0,
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151 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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152
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153 { ngx_string("Cache-Control"),
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154 ngx_http_upstream_process_multi_header_lines,
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155 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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156 ngx_http_upstream_copy_multi_header_lines,
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64
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157 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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158
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122
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159 { ngx_string("Expires"),
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160 ngx_http_upstream_process_header_line,
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161 offsetof(ngx_http_upstream_headers_in_t, expires),
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162 ngx_http_upstream_copy_header_line,
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163 offsetof(ngx_http_headers_out_t, expires), 1 },
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164
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126
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165 { ngx_string("Accept-Ranges"),
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166 ngx_http_upstream_process_header_line,
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167 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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168 ngx_http_upstream_copy_header_line,
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169 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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170
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58
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171 { ngx_string("Connection"),
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172 ngx_http_upstream_ignore_header_line, 0,
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64
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173 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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174
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190
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175 { ngx_string("Keep-Alive"),
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176 ngx_http_upstream_ignore_header_line, 0,
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177 ngx_http_upstream_ignore_header_line, 0, 0 },
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178
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58
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179 { ngx_string("X-Powered-By"),
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180 ngx_http_upstream_ignore_header_line, 0,
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198
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181 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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182
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183 { ngx_string("X-Accel-Expires"),
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184 ngx_http_upstream_process_header_line,
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185 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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186 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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187
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188 { ngx_string("X-Accel-Redirect"),
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189 ngx_http_upstream_process_header_line,
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190 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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191 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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192
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76
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193 { ngx_string("X-Accel-Limit-Rate"),
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194 ngx_http_upstream_process_limit_rate, 0,
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195 ngx_http_upstream_ignore_header_line, 0, 0 },
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196
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198
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197 { ngx_string("X-Accel-Buffering"),
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198 ngx_http_upstream_process_buffering, 0,
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199 ngx_http_upstream_ignore_header_line, 0, 0 },
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200
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206
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201 { ngx_string("X-Accel-Charset"),
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202 ngx_http_upstream_process_charset, 0,
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203 ngx_http_upstream_ignore_header_line, 0, 0 },
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204
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58
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205 #if (NGX_HTTP_GZIP)
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206 { ngx_string("Content-Encoding"),
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207 ngx_http_upstream_process_header_line,
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208 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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209 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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210 #endif
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211
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64
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212 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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213 };
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28
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214
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215
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200
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216 static ngx_command_t ngx_http_upstream_commands[] = {
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217
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218 { ngx_string("upstream"),
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219 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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220 ngx_http_upstream,
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221 0,
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222 0,
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223 NULL },
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224
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225 { ngx_string("server"),
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212
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226 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12,
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200
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227 ngx_http_upstream_server,
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228 NGX_HTTP_SRV_CONF_OFFSET,
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229 0,
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230 NULL },
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231
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232 ngx_null_command
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233 };
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234
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235
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236 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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237 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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238 NULL, /* postconfiguration */
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239
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240 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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241 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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242
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243 NULL, /* create server configuration */
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244 NULL, /* merge server configuration */
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245
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246 NULL, /* create location configuration */
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247 NULL /* merge location configuration */
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248 };
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126
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249
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28
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250
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251 ngx_module_t ngx_http_upstream_module = {
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58
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252 NGX_MODULE_V1,
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28
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253 &ngx_http_upstream_module_ctx, /* module context */
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200
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254 ngx_http_upstream_commands, /* module directives */
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28
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255 NGX_HTTP_MODULE, /* module type */
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90
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256 NULL, /* init master */
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28
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257 NULL, /* init module */
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90
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258 NULL, /* init process */
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259 NULL, /* init thread */
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260 NULL, /* exit thread */
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261 NULL, /* exit process */
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262 NULL, /* exit master */
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263 NGX_MODULE_V1_PADDING
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28
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264 };
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265
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266
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132
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267 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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268 { ngx_string("upstream_status"), 0, NULL,
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122
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269 ngx_http_upstream_log_status_getlen,
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270 ngx_http_upstream_log_status },
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271 { ngx_string("upstream_response_time"), 0, NULL,
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272 ngx_http_upstream_log_response_time_getlen,
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273 ngx_http_upstream_log_response_time },
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28
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274 { ngx_null_string, 0, NULL, NULL, NULL }
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275 };
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276
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277
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122
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278 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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279
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186
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280 { ngx_string("upstream_status"), NULL,
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132
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281 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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282
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186
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283 { ngx_string("upstream_response_time"), NULL,
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132
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284 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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285
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186
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286 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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287 };
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288
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289
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36
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290 void
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291 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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292 {
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58
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293 ngx_connection_t *c;
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118
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294 ngx_http_cleanup_t *cln;
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58
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295 ngx_http_upstream_t *u;
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296 ngx_http_core_loc_conf_t *clcf;
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28
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297
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298 c = r->connection;
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299
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300 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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301 "http init upstream, client timer: %d", c->read->timer_set);
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302
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303 if (c->read->timer_set) {
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304 ngx_del_timer(c->read);
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305 }
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306
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178
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307 u = r->upstream;
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308
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309 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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310 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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311 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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312 }
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126
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313
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28
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314 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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315
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316 if (!c->write->active) {
|
|
80
|
317 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
318 == NGX_ERROR)
|
|
28
|
319 {
|
|
|
320 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
321 return;
|
|
|
322 }
|
|
|
323 }
|
|
|
324 }
|
|
|
325
|
|
86
|
326 if (r->request_body) {
|
|
|
327 u->request_bufs = r->request_body->bufs;
|
|
|
328 }
|
|
58
|
329
|
|
86
|
330 if (u->create_request(r) != NGX_OK) {
|
|
28
|
331 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
332 return;
|
|
|
333 }
|
|
|
334
|
|
|
335 u->peer.log = r->connection->log;
|
|
58
|
336
|
|
|
337 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
338
|
|
|
339 u->output.sendfile = r->connection->sendfile;
|
|
|
340 u->output.pool = r->pool;
|
|
|
341 u->output.bufs.num = 1;
|
|
58
|
342 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
343 u->output.output_filter = ngx_chain_writer;
|
|
|
344 u->output.filter_ctx = &u->writer;
|
|
|
345
|
|
|
346 u->writer.pool = r->pool;
|
|
|
347
|
|
|
348 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
349 sizeof(ngx_http_upstream_state_t))
|
|
|
350 != NGX_OK)
|
|
28
|
351 {
|
|
|
352 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
353 return;
|
|
|
354 }
|
|
|
355
|
|
142
|
356 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
357 if (cln == NULL) {
|
|
|
358 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361
|
|
|
362 cln->handler = ngx_http_upstream_cleanup;
|
|
|
363 cln->data = r;
|
|
|
364 u->cleanup = &cln->handler;
|
|
|
365
|
|
28
|
366 ngx_http_upstream_connect(r, u);
|
|
|
367 }
|
|
|
368
|
|
|
369
|
|
36
|
370 static void
|
|
58
|
371 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
372 {
|
|
|
373 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
374 }
|
|
|
375
|
|
|
376
|
|
|
377 static void
|
|
|
378 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
379 {
|
|
|
380 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
381 }
|
|
|
382
|
|
|
383
|
|
|
384 static void
|
|
|
385 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
386 ngx_event_t *ev)
|
|
28
|
387 {
|
|
|
388 int n;
|
|
|
389 char buf[1];
|
|
126
|
390 ngx_err_t err;
|
|
28
|
391 ngx_connection_t *c;
|
|
|
392 ngx_http_upstream_t *u;
|
|
|
393
|
|
76
|
394 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
395 "http upstream check client, write event:%d, \"%V\"",
|
|
|
396 ev->write, &r->uri);
|
|
28
|
397
|
|
58
|
398 c = r->connection;
|
|
32
|
399 u = r->upstream;
|
|
|
400
|
|
132
|
401 if (c->error) {
|
|
76
|
402 ngx_http_upstream_finalize_request(r, u,
|
|
|
403 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
404 return;
|
|
|
405 }
|
|
|
406
|
|
32
|
407 if (u->peer.connection == NULL) {
|
|
|
408 return;
|
|
|
409 }
|
|
|
410
|
|
28
|
411 #if (NGX_HAVE_KQUEUE)
|
|
|
412
|
|
|
413 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
414
|
|
|
415 if (!ev->pending_eof) {
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
|
419 ev->eof = 1;
|
|
132
|
420 c->error = 1;
|
|
28
|
421
|
|
|
422 if (ev->kq_errno) {
|
|
|
423 ev->error = 1;
|
|
|
424 }
|
|
|
425
|
|
|
426 if (!u->cachable && u->peer.connection) {
|
|
|
427 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
428 "kevent() reported that client closed prematurely "
|
|
|
429 "connection, so upstream connection is closed too");
|
|
28
|
430 ngx_http_upstream_finalize_request(r, u,
|
|
|
431 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
432 return;
|
|
|
433 }
|
|
|
434
|
|
|
435 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
436 "kevent() reported that client closed "
|
|
|
437 "prematurely connection");
|
|
|
438
|
|
|
439 if (u->peer.connection == NULL) {
|
|
|
440 ngx_http_upstream_finalize_request(r, u,
|
|
|
441 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
442 return;
|
|
|
443 }
|
|
|
444
|
|
|
445 return;
|
|
|
446 }
|
|
|
447
|
|
|
448 #endif
|
|
|
449
|
|
|
450 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
451
|
|
|
452 err = ngx_socket_errno;
|
|
|
453
|
|
|
454 /*
|
|
|
455 * we do not need to disable the write event because
|
|
|
456 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
457 */
|
|
|
458
|
|
|
459 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
464 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
465 ngx_http_upstream_finalize_request(r, u,
|
|
|
466 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
467 return;
|
|
|
468 }
|
|
|
469 }
|
|
|
470
|
|
|
471 if (n > 0) {
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 if (n == -1) {
|
|
|
476 if (err == NGX_EAGAIN) {
|
|
|
477 return;
|
|
|
478 }
|
|
|
479
|
|
|
480 ev->error = 1;
|
|
|
481
|
|
32
|
482 } else { /* n == 0 */
|
|
28
|
483 err = 0;
|
|
|
484 }
|
|
|
485
|
|
78
|
486 ev->eof = 1;
|
|
132
|
487 c->error = 1;
|
|
78
|
488
|
|
28
|
489 if (!u->cachable && u->peer.connection) {
|
|
|
490 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
491 "client closed prematurely connection, "
|
|
|
492 "so upstream connection is closed too");
|
|
|
493 ngx_http_upstream_finalize_request(r, u,
|
|
|
494 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
|
498 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
499 "client closed prematurely connection");
|
|
|
500
|
|
|
501 if (u->peer.connection == NULL) {
|
|
|
502 ngx_http_upstream_finalize_request(r, u,
|
|
|
503 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
504 return;
|
|
|
505 }
|
|
|
506 }
|
|
|
507
|
|
|
508
|
|
36
|
509 static void
|
|
|
510 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
511 {
|
|
140
|
512 ngx_int_t rc;
|
|
214
|
513 ngx_time_t *tp;
|
|
140
|
514 ngx_connection_t *c;
|
|
28
|
515
|
|
32
|
516 r->connection->log->action = "connecting to upstream";
|
|
28
|
517
|
|
|
518 r->connection->single_connection = 0;
|
|
|
519
|
|
214
|
520 if (u->state && u->state->response_time) {
|
|
|
521 tp = ngx_timeofday();
|
|
|
522 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
523 - u->state->response_time;
|
|
|
524 }
|
|
|
525
|
|
|
526 u->state = ngx_array_push(&u->states);
|
|
|
527 if (u->state == NULL) {
|
|
|
528 ngx_http_upstream_finalize_request(r, u,
|
|
|
529 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
530 return;
|
|
|
531 }
|
|
|
532
|
|
|
533 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
534
|
|
|
535 tp = ngx_timeofday();
|
|
|
536 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
537
|
|
28
|
538 rc = ngx_event_connect_peer(&u->peer);
|
|
|
539
|
|
|
540 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
541 "http upstream connect: %i", rc);
|
|
|
542
|
|
|
543 if (rc == NGX_ERROR) {
|
|
|
544 ngx_http_upstream_finalize_request(r, u,
|
|
|
545 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
546 return;
|
|
|
547 }
|
|
|
548
|
|
140
|
549 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
550
|
|
92
|
551 if (rc == NGX_BUSY) {
|
|
|
552 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
553 }
|
|
|
554
|
|
|
555 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
556 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
557 return;
|
|
|
558 }
|
|
|
559
|
|
126
|
560 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
561
|
|
28
|
562 c = u->peer.connection;
|
|
|
563
|
|
|
564 c->data = r;
|
|
140
|
565
|
|
58
|
566 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
567 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
568
|
|
|
569 c->sendfile = r->connection->sendfile;
|
|
|
570
|
|
|
571 c->pool = r->pool;
|
|
|
572 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
573
|
|
|
574 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
575
|
|
|
576 u->writer.out = NULL;
|
|
|
577 u->writer.last = &u->writer.out;
|
|
|
578 u->writer.connection = c;
|
|
|
579 u->writer.limit = 0;
|
|
|
580
|
|
|
581 if (u->request_sent) {
|
|
58
|
582 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
583 ngx_http_upstream_finalize_request(r, u,
|
|
|
584 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
585 return;
|
|
|
586 }
|
|
28
|
587 }
|
|
|
588
|
|
146
|
589 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
590
|
|
|
591 /*
|
|
|
592 * the r->request_body->buf can be reused for one request only,
|
|
|
593 * the subrequests should allocate their own temporay bufs
|
|
|
594 */
|
|
|
595
|
|
|
596 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
597 if (u->output.free == NULL) {
|
|
|
598 ngx_http_upstream_finalize_request(r, u,
|
|
|
599 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
600 return;
|
|
28
|
601 }
|
|
122
|
602
|
|
|
603 u->output.free->buf = r->request_body->buf;
|
|
|
604 u->output.free->next = NULL;
|
|
|
605 u->output.allocated = 1;
|
|
|
606
|
|
|
607 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
608 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
609 r->request_body->buf->tag = u->output.tag;
|
|
28
|
610 }
|
|
|
611
|
|
|
612 u->request_sent = 0;
|
|
|
613
|
|
|
614 if (rc == NGX_AGAIN) {
|
|
|
615 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
126
|
619 #if (NGX_HTTP_SSL)
|
|
|
620
|
|
140
|
621 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
622 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
623 return;
|
|
|
624 }
|
|
|
625
|
|
|
626 #endif
|
|
|
627
|
|
28
|
628 ngx_http_upstream_send_request(r, u);
|
|
|
629 }
|
|
|
630
|
|
|
631
|
|
126
|
632 #if (NGX_HTTP_SSL)
|
|
|
633
|
|
|
634 static void
|
|
140
|
635 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
636 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
637 {
|
|
|
638 ngx_int_t rc;
|
|
|
639 ngx_peer_t *peer;
|
|
|
640
|
|
|
641 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
642 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
643 == NGX_ERROR)
|
|
|
644 {
|
|
|
645 ngx_http_upstream_finalize_request(r, u,
|
|
|
646 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
647 return;
|
|
|
648 }
|
|
|
649
|
|
|
650 c->sendfile = 0;
|
|
168
|
651 u->output.sendfile = 0;
|
|
140
|
652
|
|
|
653 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
654
|
|
|
655 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
656 ngx_http_upstream_finalize_request(r, u,
|
|
|
657 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
658 return;
|
|
|
659 }
|
|
|
660
|
|
190
|
661 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
662
|
|
140
|
663 rc = ngx_ssl_handshake(c);
|
|
|
664
|
|
|
665 if (rc == NGX_AGAIN) {
|
|
|
666 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
667 return;
|
|
|
668 }
|
|
|
669
|
|
|
670 ngx_http_upstream_ssl_handshake(c);
|
|
|
671 }
|
|
|
672
|
|
|
673
|
|
|
674 static void
|
|
126
|
675 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
676 {
|
|
|
677 ngx_http_request_t *r;
|
|
|
678 ngx_http_upstream_t *u;
|
|
|
679
|
|
|
680 r = c->data;
|
|
|
681 u = r->upstream;
|
|
|
682
|
|
|
683 if (c->ssl->handshaked) {
|
|
|
684
|
|
|
685 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
686 c->read->handler = ngx_http_upstream_process_header;
|
|
|
687
|
|
|
688 ngx_http_upstream_send_request(r, u);
|
|
|
689
|
|
|
690 return;
|
|
|
691 }
|
|
|
692
|
|
|
693 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
694
|
|
|
695 }
|
|
|
696
|
|
|
697 #endif
|
|
|
698
|
|
|
699
|
|
58
|
700 static ngx_int_t
|
|
36
|
701 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
702 {
|
|
|
703 ngx_chain_t *cl;
|
|
|
704
|
|
58
|
705 if (u->reinit_request(r) != NGX_OK) {
|
|
|
706 return NGX_ERROR;
|
|
|
707 }
|
|
|
708
|
|
|
709 ngx_memzero(&r->upstream->headers_in,
|
|
|
710 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
711
|
|
|
712 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
713 sizeof(ngx_table_elt_t))
|
|
|
714 != NGX_OK)
|
|
58
|
715 {
|
|
|
716 return NGX_ERROR;
|
|
28
|
717 }
|
|
|
718
|
|
|
719 /* reinit the request chain */
|
|
126
|
720
|
|
58
|
721 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
722 cl->buf->pos = cl->buf->start;
|
|
|
723 cl->buf->file_pos = 0;
|
|
|
724 }
|
|
|
725
|
|
58
|
726 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
727
|
|
122
|
728 if (r->request_body && r->request_body->temp_file
|
|
146
|
729 && r != r->main && u->output.buf)
|
|
122
|
730 {
|
|
|
731 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
732 if (u->output.free == NULL) {
|
|
|
733 return NGX_ERROR;
|
|
58
|
734 }
|
|
122
|
735
|
|
|
736 u->output.free->buf = u->output.buf;
|
|
|
737 u->output.free->next = NULL;
|
|
|
738
|
|
|
739 u->output.buf->pos = u->output.buf->start;
|
|
|
740 u->output.buf->last = u->output.buf->start;
|
|
58
|
741 }
|
|
28
|
742
|
|
|
743 u->output.buf = NULL;
|
|
|
744 u->output.in = NULL;
|
|
|
745 u->output.busy = NULL;
|
|
126
|
746
|
|
130
|
747 /* reinit u->buffer */
|
|
126
|
748
|
|
28
|
749 #if 0
|
|
|
750 if (u->cache) {
|
|
130
|
751 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
752 u->buffer.last = u->buffer.pos;
|
|
28
|
753
|
|
|
754 } else {
|
|
130
|
755 u->buffer.pos = u->buffer.start;
|
|
|
756 u->buffer.last = u->buffer.start;
|
|
28
|
757 }
|
|
|
758 #else
|
|
58
|
759
|
|
130
|
760 u->buffer.pos = u->buffer.start;
|
|
|
761 u->buffer.last = u->buffer.start;
|
|
58
|
762
|
|
28
|
763 #endif
|
|
|
764
|
|
58
|
765 return NGX_OK;
|
|
28
|
766 }
|
|
|
767
|
|
|
768
|
|
36
|
769 static void
|
|
|
770 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
771 {
|
|
32
|
772 int rc;
|
|
|
773 ngx_connection_t *c;
|
|
126
|
774
|
|
28
|
775 c = u->peer.connection;
|
|
|
776
|
|
|
777 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
778 "http upstream send request");
|
|
|
779
|
|
|
780 #if (NGX_HAVE_KQUEUE)
|
|
|
781
|
|
|
782 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
783 && !u->request_sent
|
|
|
784 && c->write->pending_eof)
|
|
|
785 {
|
|
86
|
786 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
787 "kevent() reported that connect() failed");
|
|
28
|
788 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
789 return;
|
|
|
790 }
|
|
|
791
|
|
|
792 #endif
|
|
|
793
|
|
32
|
794 c->log->action = "sending request to upstream";
|
|
28
|
795
|
|
58
|
796 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
797
|
|
|
798 u->request_sent = 1;
|
|
|
799
|
|
|
800 if (rc == NGX_ERROR) {
|
|
|
801 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
802 return;
|
|
|
803 }
|
|
|
804
|
|
|
805 if (c->write->timer_set) {
|
|
|
806 ngx_del_timer(c->write);
|
|
|
807 }
|
|
|
808
|
|
|
809 if (rc == NGX_AGAIN) {
|
|
|
810 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
811
|
|
|
812 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
813 {
|
|
|
814 ngx_http_upstream_finalize_request(r, u,
|
|
|
815 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
816 return;
|
|
|
817 }
|
|
|
818
|
|
|
819 return;
|
|
|
820 }
|
|
|
821
|
|
|
822 /* rc == NGX_OK */
|
|
|
823
|
|
|
824 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
825 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
826 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
827 ngx_tcp_push_n " failed");
|
|
|
828 ngx_http_upstream_finalize_request(r, u,
|
|
|
829 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
830 return;
|
|
28
|
831 }
|
|
|
832
|
|
|
833 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
834 }
|
|
126
|
835
|
|
28
|
836 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
837
|
|
|
838 #if 1
|
|
|
839 if (c->read->ready) {
|
|
126
|
840
|
|
28
|
841 /* post aio operation */
|
|
|
842
|
|
|
843 /*
|
|
|
844 * TODO comment
|
|
|
845 * although we can post aio operation just in the end
|
|
|
846 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
847 * it's better to do here because we postpone header buffer allocation
|
|
|
848 */
|
|
|
849
|
|
|
850 ngx_http_upstream_process_header(c->read);
|
|
|
851 return;
|
|
|
852 }
|
|
|
853 #endif
|
|
|
854
|
|
58
|
855 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
856
|
|
58
|
857 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
858 ngx_http_upstream_finalize_request(r, u,
|
|
|
859 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
860 return;
|
|
|
861 }
|
|
|
862 }
|
|
|
863
|
|
|
864
|
|
36
|
865 static void
|
|
|
866 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
867 {
|
|
|
868 ngx_connection_t *c;
|
|
|
869 ngx_http_request_t *r;
|
|
|
870 ngx_http_upstream_t *u;
|
|
|
871
|
|
|
872 c = wev->data;
|
|
|
873 r = c->data;
|
|
|
874 u = r->upstream;
|
|
|
875
|
|
|
876 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
877 "http upstream send request handler");
|
|
|
878
|
|
|
879 if (wev->timedout) {
|
|
|
880 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
881 return;
|
|
|
882 }
|
|
|
883
|
|
140
|
884 #if (NGX_HTTP_SSL)
|
|
|
885
|
|
|
886 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
887 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
888 return;
|
|
|
889 }
|
|
|
890
|
|
|
891 #endif
|
|
|
892
|
|
200
|
893 if (u->header_sent) {
|
|
|
894 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
895
|
|
|
896 (void) ngx_handle_write_event(wev, 0);
|
|
|
897
|
|
|
898 return;
|
|
|
899 }
|
|
|
900
|
|
28
|
901 ngx_http_upstream_send_request(r, u);
|
|
|
902 }
|
|
|
903
|
|
|
904
|
|
36
|
905 static void
|
|
|
906 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
907 {
|
|
64
|
908 ssize_t n;
|
|
|
909 ngx_int_t rc;
|
|
122
|
910 ngx_str_t *uri, args;
|
|
198
|
911 ngx_uint_t i, flags;
|
|
64
|
912 ngx_list_part_t *part;
|
|
|
913 ngx_table_elt_t *h;
|
|
|
914 ngx_connection_t *c;
|
|
|
915 ngx_http_request_t *r;
|
|
|
916 ngx_http_upstream_t *u;
|
|
|
917 ngx_http_err_page_t *err_page;
|
|
|
918 ngx_http_core_loc_conf_t *clcf;
|
|
|
919 ngx_http_upstream_header_t *hh;
|
|
|
920 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
921
|
|
|
922 c = rev->data;
|
|
|
923 r = c->data;
|
|
|
924 u = r->upstream;
|
|
|
925
|
|
|
926 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
927 "http upstream process header");
|
|
28
|
928
|
|
32
|
929 c->log->action = "reading response header from upstream";
|
|
28
|
930
|
|
|
931 if (rev->timedout) {
|
|
|
932 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
933 return;
|
|
|
934 }
|
|
126
|
935
|
|
130
|
936 if (u->buffer.start == NULL) {
|
|
|
937 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
938 if (u->buffer.start == NULL) {
|
|
28
|
939 ngx_http_upstream_finalize_request(r, u,
|
|
|
940 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
941 return;
|
|
|
942 }
|
|
|
943
|
|
130
|
944 u->buffer.pos = u->buffer.start;
|
|
|
945 u->buffer.last = u->buffer.start;
|
|
|
946 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
947 u->buffer.temporary = 1;
|
|
|
948
|
|
|
949 u->buffer.tag = u->output.tag;
|
|
28
|
950
|
|
58
|
951 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
952 sizeof(ngx_table_elt_t))
|
|
|
953 != NGX_OK)
|
|
58
|
954 {
|
|
|
955 ngx_http_upstream_finalize_request(r, u,
|
|
|
956 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
957 return;
|
|
|
958 }
|
|
|
959
|
|
28
|
960 #if 0
|
|
|
961 if (u->cache) {
|
|
130
|
962 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
963 u->buffer.last = u->buffer.pos;
|
|
28
|
964 }
|
|
|
965 #endif
|
|
|
966 }
|
|
|
967
|
|
130
|
968 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
969 u->buffer.end - u->buffer.last);
|
|
28
|
970
|
|
|
971 if (n == NGX_AGAIN) {
|
|
|
972 #if 0
|
|
|
973 ngx_add_timer(rev, u->read_timeout);
|
|
|
974 #endif
|
|
|
975
|
|
|
976 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
977 ngx_http_upstream_finalize_request(r, u,
|
|
|
978 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
979 return;
|
|
|
980 }
|
|
|
981
|
|
|
982 return;
|
|
|
983 }
|
|
|
984
|
|
|
985 if (n == 0) {
|
|
|
986 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
987 "upstream prematurely closed connection");
|
|
|
988 }
|
|
|
989
|
|
|
990 if (n == NGX_ERROR || n == 0) {
|
|
|
991 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
992 return;
|
|
|
993 }
|
|
|
994
|
|
130
|
995 u->buffer.last += n;
|
|
28
|
996
|
|
|
997 #if 0
|
|
|
998 u->valid_header_in = 0;
|
|
|
999
|
|
|
1000 u->peer.cached = 0;
|
|
|
1001 #endif
|
|
|
1002
|
|
|
1003 rc = u->process_header(r);
|
|
|
1004
|
|
|
1005 if (rc == NGX_AGAIN) {
|
|
|
1006 #if 0
|
|
|
1007 ngx_add_timer(rev, u->read_timeout);
|
|
|
1008 #endif
|
|
|
1009
|
|
130
|
1010 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1011 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1012 "upstream sent too big header");
|
|
|
1013
|
|
|
1014 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1015 return;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1019 ngx_http_upstream_finalize_request(r, u,
|
|
|
1020 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1021 return;
|
|
|
1022 }
|
|
|
1023
|
|
|
1024 return;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1028 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1029 return;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1033 ngx_http_upstream_finalize_request(r, u,
|
|
|
1034 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1035 return;
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 /* rc == NGX_OK */
|
|
|
1039
|
|
78
|
1040 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1041
|
|
|
1042 if (u->peer.tries > 1
|
|
|
1043 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1044 {
|
|
|
1045 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1046 return;
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 #if (NGX_HTTP_CACHE)
|
|
|
1050
|
|
|
1051 if (u->peer.tries == 0
|
|
|
1052 && u->stale
|
|
|
1053 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1054 {
|
|
|
1055 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1056 ngx_http_send_cached_response(r));
|
|
58
|
1057 return;
|
|
|
1058 }
|
|
|
1059
|
|
|
1060 #endif
|
|
|
1061 }
|
|
|
1062
|
|
146
|
1063 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1064
|
|
|
1065 if (u->peer.tries > 1
|
|
|
1066 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1067 {
|
|
|
1068 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1069 return;
|
|
|
1070 }
|
|
|
1071
|
|
|
1072 if (u->conf->redirect_404) {
|
|
|
1073 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1074 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1075 return;
|
|
|
1076 }
|
|
58
|
1077 }
|
|
|
1078
|
|
|
1079
|
|
78
|
1080 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
206
|
1081 && u->conf->intercept_errors
|
|
36
|
1082 && r->err_ctx == NULL)
|
|
|
1083 {
|
|
|
1084 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1085
|
|
|
1086 if (clcf->error_pages) {
|
|
|
1087
|
|
|
1088 err_page = clcf->error_pages->elts;
|
|
|
1089 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1090 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1091
|
|
|
1092 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1093
|
|
|
1094 r->headers_out.www_authenticate =
|
|
|
1095 ngx_list_push(&r->headers_out.headers);
|
|
|
1096
|
|
|
1097 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1098 ngx_http_upstream_finalize_request(r, u,
|
|
|
1099 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1100 return;
|
|
|
1101 }
|
|
|
1102
|
|
126
|
1103 *r->headers_out.www_authenticate =
|
|
78
|
1104 *u->headers_in.www_authenticate;
|
|
|
1105 }
|
|
|
1106
|
|
36
|
1107 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1108 u->headers_in.status_n);
|
|
36
|
1109 return;
|
|
|
1110 }
|
|
|
1111 }
|
|
|
1112 }
|
|
|
1113 }
|
|
|
1114
|
|
64
|
1115 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1116 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1117
|
|
|
1118 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1119
|
|
|
1120 part = &r->upstream->headers_in.headers.part;
|
|
|
1121 h = part->elts;
|
|
|
1122
|
|
|
1123 for (i = 0; /* void */; i++) {
|
|
|
1124
|
|
|
1125 if (i >= part->nelts) {
|
|
|
1126 if (part->next == NULL) {
|
|
|
1127 break;
|
|
|
1128 }
|
|
126
|
1129
|
|
64
|
1130 part = part->next;
|
|
|
1131 h = part->elts;
|
|
|
1132 i = 0;
|
|
|
1133 }
|
|
|
1134
|
|
198
|
1135 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1136 h[i].lowcase_key, h[i].key.len);
|
|
|
1137
|
|
|
1138 if (hh && hh->redirect) {
|
|
|
1139 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
64
|
1140 ngx_http_upstream_finalize_request(r, u,
|
|
|
1141 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1142 return;
|
|
|
1143 }
|
|
|
1144 }
|
|
|
1145 }
|
|
|
1146
|
|
122
|
1147 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1148 args.len = 0;
|
|
|
1149 args.data = NULL;
|
|
|
1150 flags = 0;
|
|
|
1151
|
|
|
1152 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1153 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1154 return;
|
|
|
1155 }
|
|
|
1156
|
|
|
1157 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1158 r->zero_in_uri = 1;
|
|
|
1159 }
|
|
|
1160
|
|
202
|
1161 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1162 r->method = NGX_HTTP_GET;
|
|
|
1163 }
|
|
|
1164
|
|
122
|
1165 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1166 return;
|
|
|
1167 }
|
|
|
1168
|
|
28
|
1169 ngx_http_upstream_send_response(r, u);
|
|
|
1170 }
|
|
|
1171
|
|
|
1172
|
|
36
|
1173 static void
|
|
|
1174 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1175 {
|
|
132
|
1176 int tcp_nodelay;
|
|
130
|
1177 ssize_t size;
|
|
58
|
1178 ngx_int_t rc;
|
|
198
|
1179 ngx_uint_t i;
|
|
58
|
1180 ngx_list_part_t *part;
|
|
|
1181 ngx_table_elt_t *h;
|
|
|
1182 ngx_event_pipe_t *p;
|
|
132
|
1183 ngx_connection_t *c;
|
|
112
|
1184 ngx_pool_cleanup_t *cl;
|
|
|
1185 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1186 ngx_http_core_loc_conf_t *clcf;
|
|
|
1187 ngx_http_upstream_header_t *hh;
|
|
|
1188 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1189
|
|
|
1190 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1191
|
|
|
1192 part = &r->upstream->headers_in.headers.part;
|
|
|
1193 h = part->elts;
|
|
|
1194
|
|
|
1195 for (i = 0; /* void */; i++) {
|
|
28
|
1196
|
|
58
|
1197 if (i >= part->nelts) {
|
|
|
1198 if (part->next == NULL) {
|
|
|
1199 break;
|
|
|
1200 }
|
|
126
|
1201
|
|
58
|
1202 part = part->next;
|
|
|
1203 h = part->elts;
|
|
|
1204 i = 0;
|
|
|
1205 }
|
|
|
1206
|
|
198
|
1207 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1208 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1209 {
|
|
198
|
1210 continue;
|
|
|
1211 }
|
|
|
1212
|
|
|
1213 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1214 h[i].lowcase_key, h[i].key.len);
|
|
|
1215
|
|
|
1216 if (hh) {
|
|
|
1217 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1218 ngx_http_upstream_finalize_request(r, u,
|
|
|
1219 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1220 return;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 continue;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1227 ngx_http_upstream_finalize_request(r, u,
|
|
|
1228 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1229 return;
|
|
|
1230 }
|
|
|
1231 }
|
|
|
1232
|
|
198
|
1233 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1234 r->headers_out.server->hash = 0;
|
|
|
1235 }
|
|
|
1236
|
|
|
1237 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1238 r->headers_out.date->hash = 0;
|
|
|
1239 }
|
|
|
1240
|
|
78
|
1241 r->headers_out.status = u->headers_in.status_n;
|
|
|
1242 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1243
|
|
130
|
1244 if (r->headers_out.content_length_n != -1) {
|
|
|
1245 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1246
|
|
|
1247 } else {
|
|
|
1248 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1249 }
|
|
|
1250
|
|
58
|
1251 rc = ngx_http_send_header(r);
|
|
28
|
1252
|
|
178
|
1253 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1254 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1255 return;
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 u->header_sent = 1;
|
|
|
1259
|
|
122
|
1260 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1261 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1262 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1263 clf = cl->data;
|
|
|
1264
|
|
|
1265 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1266 cl->handler(clf);
|
|
|
1267 cl->handler = NULL;
|
|
208
|
1268 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1269 break;
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272 }
|
|
|
1273 }
|
|
|
1274
|
|
132
|
1275 c = r->connection;
|
|
|
1276
|
|
130
|
1277 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1278
|
|
198
|
1279 if (!u->buffering) {
|
|
130
|
1280
|
|
|
1281 if (u->input_filter == NULL) {
|
|
|
1282 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1283 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1284 u->input_filter_ctx = r;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 u->peer.connection->read->handler =
|
|
|
1288 ngx_http_upstream_process_non_buffered_body;
|
|
|
1289 r->write_event_handler =
|
|
|
1290 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1291
|
|
|
1292 r->limit_rate = 0;
|
|
|
1293
|
|
|
1294 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1295 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1296 return;
|
|
|
1297 }
|
|
|
1298
|
|
132
|
1299 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1300 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1301
|
|
|
1302 tcp_nodelay = 1;
|
|
|
1303
|
|
|
1304 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1305 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1306 {
|
|
|
1307 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1308 "setsockopt(TCP_NODELAY) failed");
|
|
|
1309 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1310 return;
|
|
|
1311 }
|
|
|
1312
|
|
|
1313 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1314 }
|
|
|
1315
|
|
130
|
1316 size = u->buffer.last - u->buffer.pos;
|
|
|
1317
|
|
|
1318 if (size) {
|
|
|
1319 u->buffer.last = u->buffer.pos;
|
|
|
1320
|
|
|
1321 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1322 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1323 return;
|
|
|
1324 }
|
|
|
1325
|
|
132
|
1326 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1327
|
|
|
1328 } else {
|
|
|
1329 u->buffer.pos = u->buffer.start;
|
|
|
1330 u->buffer.last = u->buffer.start;
|
|
|
1331
|
|
|
1332 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1333 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1334 return;
|
|
|
1335 }
|
|
|
1336 }
|
|
|
1337
|
|
|
1338 return;
|
|
|
1339 }
|
|
|
1340
|
|
28
|
1341 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1342
|
|
|
1343 #if 0
|
|
|
1344
|
|
|
1345 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1346 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1347 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1348 ngx_close_file_n " \"%s\" failed",
|
|
|
1349 u->cache->ctx.file.name.data);
|
|
|
1350 }
|
|
|
1351 }
|
|
|
1352
|
|
|
1353 if (u->cachable) {
|
|
130
|
1354 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1355
|
|
|
1356 header->expires = u->cache->ctx.expires;
|
|
|
1357 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1358 header->date = u->cache->ctx.date;
|
|
|
1359 header->length = r->headers_out.content_length_n;
|
|
|
1360 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1361
|
|
|
1362 header->key_len = u->cache->ctx.key0.len;
|
|
|
1363 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1364 header->key[header->key_len] = LF;
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 #endif
|
|
|
1368
|
|
130
|
1369 p = u->pipe;
|
|
28
|
1370
|
|
|
1371 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1372 p->output_ctx = r;
|
|
|
1373 p->tag = u->output.tag;
|
|
126
|
1374 p->bufs = u->conf->bufs;
|
|
28
|
1375 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1376 p->upstream = u->peer.connection;
|
|
132
|
1377 p->downstream = c;
|
|
28
|
1378 p->pool = r->pool;
|
|
132
|
1379 p->log = c->log;
|
|
126
|
1380
|
|
28
|
1381 p->cachable = u->cachable;
|
|
|
1382
|
|
50
|
1383 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1384 if (p->temp_file == NULL) {
|
|
28
|
1385 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1386 return;
|
|
|
1387 }
|
|
|
1388
|
|
|
1389 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1390 p->temp_file->file.log = c->log;
|
|
28
|
1391 p->temp_file->path = u->conf->temp_path;
|
|
|
1392 p->temp_file->pool = r->pool;
|
|
126
|
1393
|
|
28
|
1394 if (u->cachable) {
|
|
|
1395 p->temp_file->persistent = 1;
|
|
|
1396 } else {
|
|
|
1397 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1398 "to a temporary file";
|
|
|
1399 }
|
|
|
1400
|
|
|
1401 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1402 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1403
|
|
50
|
1404 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1405 if (p->preread_bufs == NULL) {
|
|
28
|
1406 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1407 return;
|
|
|
1408 }
|
|
130
|
1409 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1410 p->preread_bufs->next = NULL;
|
|
130
|
1411 u->buffer.recycled = 1;
|
|
|
1412
|
|
|
1413 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1414
|
|
|
1415 if (u->cachable) {
|
|
|
1416 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1417 if (p->buf_to_file == NULL) {
|
|
|
1418 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1419 return;
|
|
|
1420 }
|
|
130
|
1421 p->buf_to_file->pos = u->buffer.start;
|
|
|
1422 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1423 p->buf_to_file->temporary = 1;
|
|
|
1424 }
|
|
|
1425
|
|
|
1426 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1427 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1428 p->single_buf = 1;
|
|
|
1429 }
|
|
|
1430
|
|
|
1431 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1432 p->free_bufs = 1;
|
|
|
1433
|
|
|
1434 /*
|
|
130
|
1435 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1436 * as though these bytes were read
|
|
|
1437 */
|
|
130
|
1438 u->buffer.last = u->buffer.pos;
|
|
28
|
1439
|
|
|
1440 if (u->conf->cyclic_temp_file) {
|
|
|
1441
|
|
|
1442 /*
|
|
|
1443 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1444 * because the writing a new data may interfere with sendfile()
|
|
|
1445 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1446 */
|
|
|
1447
|
|
|
1448 p->cyclic_temp_file = 1;
|
|
132
|
1449 c->sendfile = 0;
|
|
28
|
1450
|
|
|
1451 } else {
|
|
|
1452 p->cyclic_temp_file = 0;
|
|
|
1453 }
|
|
|
1454
|
|
|
1455 p->read_timeout = u->conf->read_timeout;
|
|
|
1456 p->send_timeout = clcf->send_timeout;
|
|
|
1457 p->send_lowat = clcf->send_lowat;
|
|
|
1458
|
|
58
|
1459 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1460 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1461
|
|
|
1462 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1463 }
|
|
|
1464
|
|
|
1465
|
|
36
|
1466 static void
|
|
130
|
1467 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1468 {
|
|
|
1469 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1470 }
|
|
|
1471
|
|
|
1472
|
|
|
1473 static void
|
|
|
1474 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1475 {
|
|
|
1476 size_t size;
|
|
|
1477 ssize_t n;
|
|
|
1478 ngx_buf_t *b;
|
|
132
|
1479 ngx_int_t rc;
|
|
130
|
1480 ngx_uint_t do_write;
|
|
132
|
1481 ngx_connection_t *c, *client;
|
|
130
|
1482 ngx_http_request_t *r;
|
|
|
1483 ngx_http_upstream_t *u;
|
|
|
1484 ngx_http_core_loc_conf_t *clcf;
|
|
|
1485
|
|
|
1486 c = ev->data;
|
|
|
1487
|
|
|
1488 if (ev->write) {
|
|
|
1489 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1490 "http upstream process non buffered downstream");
|
|
|
1491 c->log->action = "sending to client";
|
|
|
1492
|
|
|
1493 } else {
|
|
|
1494 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1495 "http upstream process non buffered upstream");
|
|
|
1496 c->log->action = "reading upstream";
|
|
|
1497 }
|
|
|
1498
|
|
|
1499 if (ev->timedout) {
|
|
|
1500 if (ev->write) {
|
|
|
1501 c->timedout = 1;
|
|
160
|
1502 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1503
|
|
130
|
1504 } else {
|
|
160
|
1505 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1506 }
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 r = c->data;
|
|
|
1510 u = r->upstream;
|
|
132
|
1511 client = r->connection;
|
|
130
|
1512
|
|
|
1513 b = &u->buffer;
|
|
|
1514
|
|
|
1515 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1516
|
|
206
|
1517 do_write = ev->write || u->length == 0;
|
|
130
|
1518
|
|
|
1519 for ( ;; ) {
|
|
|
1520
|
|
|
1521 if (do_write) {
|
|
|
1522
|
|
|
1523 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1524 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1525
|
|
|
1526 if (client->destroyed) {
|
|
|
1527 return;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 if (rc == NGX_ERROR) {
|
|
130
|
1531 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1532 return;
|
|
|
1533 }
|
|
|
1534
|
|
|
1535 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1536 &u->out_bufs, u->output.tag);
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 if (u->busy_bufs == NULL) {
|
|
|
1540
|
|
|
1541 if (u->length == 0
|
|
|
1542 || u->peer.connection->read->eof
|
|
|
1543 || u->peer.connection->read->error)
|
|
|
1544 {
|
|
|
1545 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1546 return;
|
|
|
1547 }
|
|
|
1548
|
|
|
1549 b->pos = b->start;
|
|
|
1550 b->last = b->start;
|
|
|
1551 }
|
|
|
1552 }
|
|
|
1553
|
|
|
1554 size = b->end - b->last;
|
|
|
1555
|
|
|
1556 if (size > u->length) {
|
|
|
1557 size = u->length;
|
|
|
1558 }
|
|
|
1559
|
|
|
1560 if (size && u->peer.connection->read->ready) {
|
|
206
|
1561
|
|
130
|
1562 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1563
|
|
|
1564 if (n == NGX_AGAIN) {
|
|
|
1565 break;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 if (n > 0) {
|
|
|
1569 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1570 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1571 return;
|
|
|
1572 }
|
|
|
1573 }
|
|
|
1574
|
|
|
1575 do_write = 1;
|
|
|
1576
|
|
|
1577 continue;
|
|
|
1578 }
|
|
|
1579
|
|
|
1580 break;
|
|
|
1581 }
|
|
|
1582
|
|
132
|
1583 if (client->data == r) {
|
|
|
1584 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1585 == NGX_ERROR)
|
|
|
1586 {
|
|
|
1587 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1588 return;
|
|
|
1589 }
|
|
130
|
1590 }
|
|
|
1591
|
|
132
|
1592 if (client->write->active) {
|
|
|
1593 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1594
|
|
|
1595 } else if (client->write->timer_set) {
|
|
|
1596 ngx_del_timer(client->write);
|
|
130
|
1597 }
|
|
|
1598
|
|
|
1599 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1600 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1601 return;
|
|
|
1602 }
|
|
|
1603
|
|
|
1604 if (u->peer.connection->read->active) {
|
|
|
1605 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1606
|
|
132
|
1607 } else if (u->peer.connection->read->timer_set) {
|
|
|
1608 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1609 }
|
|
|
1610 }
|
|
|
1611
|
|
|
1612
|
|
|
1613 static ngx_int_t
|
|
|
1614 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1615 {
|
|
|
1616 return NGX_OK;
|
|
|
1617 }
|
|
|
1618
|
|
|
1619
|
|
|
1620 static ngx_int_t
|
|
|
1621 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1622 {
|
|
|
1623 ngx_http_request_t *r = data;
|
|
|
1624
|
|
|
1625 ngx_buf_t *b;
|
|
|
1626 ngx_chain_t *cl, **ll;
|
|
|
1627 ngx_http_upstream_t *u;
|
|
|
1628
|
|
|
1629 u = r->upstream;
|
|
|
1630
|
|
|
1631 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1632 ll = &cl->next;
|
|
|
1633 }
|
|
|
1634
|
|
|
1635 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1636 if (cl == NULL) {
|
|
|
1637 return NGX_ERROR;
|
|
|
1638 }
|
|
|
1639
|
|
|
1640 *ll = cl;
|
|
|
1641
|
|
|
1642 cl->buf->flush = 1;
|
|
|
1643 cl->buf->memory = 1;
|
|
|
1644
|
|
|
1645 b = &u->buffer;
|
|
|
1646
|
|
|
1647 cl->buf->pos = b->last;
|
|
|
1648 b->last += bytes;
|
|
|
1649 cl->buf->last = b->last;
|
|
|
1650
|
|
|
1651 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1652 return NGX_OK;
|
|
|
1653 }
|
|
|
1654
|
|
|
1655 u->length -= bytes;
|
|
|
1656
|
|
|
1657 return NGX_OK;
|
|
|
1658 }
|
|
|
1659
|
|
|
1660
|
|
|
1661 static void
|
|
58
|
1662 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1663 {
|
|
|
1664 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1665 }
|
|
|
1666
|
|
|
1667
|
|
|
1668 static void
|
|
36
|
1669 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1670 {
|
|
58
|
1671 ngx_event_pipe_t *p;
|
|
132
|
1672 ngx_connection_t *c, *downstream;
|
|
28
|
1673 ngx_http_request_t *r;
|
|
|
1674 ngx_http_upstream_t *u;
|
|
|
1675
|
|
|
1676 c = ev->data;
|
|
|
1677 r = c->data;
|
|
|
1678 u = r->upstream;
|
|
132
|
1679 downstream = r->connection;
|
|
28
|
1680
|
|
|
1681 if (ev->write) {
|
|
32
|
1682 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1683 "http upstream process downstream");
|
|
|
1684 c->log->action = "sending to client";
|
|
126
|
1685
|
|
28
|
1686 } else {
|
|
32
|
1687 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1688 "http upstream process upstream");
|
|
|
1689 c->log->action = "reading upstream";
|
|
28
|
1690 }
|
|
126
|
1691
|
|
130
|
1692 p = u->pipe;
|
|
28
|
1693
|
|
|
1694 if (ev->timedout) {
|
|
|
1695 if (ev->write) {
|
|
76
|
1696 if (ev->delayed) {
|
|
|
1697
|
|
|
1698 ev->timedout = 0;
|
|
|
1699 ev->delayed = 0;
|
|
|
1700
|
|
|
1701 if (!ev->ready) {
|
|
|
1702 ngx_add_timer(ev, p->send_timeout);
|
|
|
1703
|
|
|
1704 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1705 {
|
|
|
1706 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1707 return;
|
|
|
1708 }
|
|
|
1709
|
|
|
1710 return;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1714
|
|
|
1715 if (downstream->destroyed) {
|
|
|
1716 return;
|
|
|
1717 }
|
|
|
1718
|
|
76
|
1719 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1720 return;
|
|
|
1721 }
|
|
|
1722
|
|
|
1723 } else {
|
|
|
1724 p->downstream_error = 1;
|
|
126
|
1725 c->timedout = 1;
|
|
160
|
1726 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1727 }
|
|
28
|
1728
|
|
|
1729 } else {
|
|
126
|
1730 p->upstream_error = 1;
|
|
160
|
1731 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1732 }
|
|
|
1733
|
|
|
1734 } else {
|
|
76
|
1735 if (ev->write && ev->delayed) {
|
|
|
1736 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1737 "http downstream delayed");
|
|
|
1738
|
|
|
1739 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1740 return;
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 return;
|
|
|
1744 }
|
|
|
1745
|
|
28
|
1746 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1747
|
|
|
1748 if (downstream->destroyed) {
|
|
|
1749 return;
|
|
|
1750 }
|
|
|
1751
|
|
28
|
1752 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1753 return;
|
|
|
1754 }
|
|
|
1755 }
|
|
126
|
1756
|
|
28
|
1757 if (u->peer.connection) {
|
|
|
1758
|
|
|
1759 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1760
|
|
|
1761 if (p->upstream_done && u->cachable) {
|
|
|
1762 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1763 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1764 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1765 return;
|
|
|
1766 }
|
|
|
1767
|
|
|
1768 } else if (p->upstream_eof && u->cachable) {
|
|
|
1769
|
|
|
1770 /* TODO: check length & update cache */
|
|
|
1771
|
|
|
1772 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1773 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1774 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1775 return;
|
|
|
1776 }
|
|
|
1777 }
|
|
|
1778
|
|
|
1779 #endif
|
|
|
1780
|
|
|
1781 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1782 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1783 "http upstream exit: %p", p->out);
|
|
28
|
1784 #if 0
|
|
|
1785 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1786 #endif
|
|
|
1787 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1788 return;
|
|
|
1789 }
|
|
|
1790 }
|
|
|
1791
|
|
|
1792 if (p->downstream_error) {
|
|
32
|
1793 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1794 "http upstream downstream error");
|
|
28
|
1795
|
|
|
1796 if (!u->cachable && u->peer.connection) {
|
|
|
1797 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1798 }
|
|
|
1799 }
|
|
|
1800 }
|
|
|
1801
|
|
|
1802
|
|
36
|
1803 static void
|
|
|
1804 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1805 {
|
|
|
1806 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1807 "http upstream dummy handler");
|
|
|
1808 }
|
|
|
1809
|
|
|
1810
|
|
36
|
1811 static void
|
|
|
1812 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1813 ngx_uint_t ft_type)
|
|
28
|
1814 {
|
|
74
|
1815 ngx_uint_t status, down;
|
|
28
|
1816
|
|
|
1817 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1818 "http next upstream, %xD", ft_type);
|
|
|
1819
|
|
|
1820 #if 0
|
|
|
1821 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1822 #endif
|
|
|
1823
|
|
74
|
1824 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1825 down = 0;
|
|
|
1826 } else {
|
|
|
1827 down = 1;
|
|
28
|
1828 }
|
|
74
|
1829
|
|
|
1830 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1831
|
|
28
|
1832 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1833 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1834 "upstream timed out");
|
|
|
1835 }
|
|
126
|
1836
|
|
28
|
1837 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1838 status = 0;
|
|
|
1839
|
|
|
1840 } else {
|
|
|
1841 switch(ft_type) {
|
|
|
1842
|
|
|
1843 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1844 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1845 break;
|
|
|
1846
|
|
|
1847 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1848 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1849 break;
|
|
|
1850
|
|
|
1851 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1852 status = NGX_HTTP_NOT_FOUND;
|
|
|
1853 break;
|
|
|
1854
|
|
|
1855 /*
|
|
|
1856 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1857 * never reach here
|
|
|
1858 */
|
|
|
1859
|
|
|
1860 default:
|
|
|
1861 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1862 }
|
|
|
1863 }
|
|
|
1864
|
|
132
|
1865 if (r->connection->error) {
|
|
28
|
1866 ngx_http_upstream_finalize_request(r, u,
|
|
|
1867 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1868 return;
|
|
|
1869 }
|
|
|
1870
|
|
|
1871 if (status) {
|
|
|
1872 u->state->status = status;
|
|
|
1873
|
|
74
|
1874 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1875
|
|
|
1876 #if (NGX_HTTP_CACHE)
|
|
|
1877
|
|
|
1878 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1879 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1880 ngx_http_send_cached_response(r));
|
|
28
|
1881 return;
|
|
|
1882 }
|
|
|
1883
|
|
|
1884 #endif
|
|
|
1885
|
|
|
1886 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1887 return;
|
|
|
1888 }
|
|
|
1889 }
|
|
|
1890
|
|
|
1891 if (u->peer.connection) {
|
|
|
1892 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1893 "close http upstream connection: %d",
|
|
|
1894 u->peer.connection->fd);
|
|
126
|
1895 #if (NGX_HTTP_SSL)
|
|
|
1896 if (u->peer.connection->ssl) {
|
|
|
1897 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1898 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1899 }
|
|
|
1900 #endif
|
|
28
|
1901 ngx_close_connection(u->peer.connection);
|
|
|
1902 }
|
|
|
1903
|
|
|
1904 #if 0
|
|
|
1905 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1906 ngx_http_upstream_busy_lock(p);
|
|
|
1907 return;
|
|
|
1908 }
|
|
|
1909 #endif
|
|
|
1910
|
|
|
1911 ngx_http_upstream_connect(r, u);
|
|
|
1912 }
|
|
|
1913
|
|
|
1914
|
|
36
|
1915 static void
|
|
118
|
1916 ngx_http_upstream_cleanup(void *data)
|
|
|
1917 {
|
|
|
1918 ngx_http_request_t *r = data;
|
|
|
1919
|
|
|
1920 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1921 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1922
|
|
|
1923 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1924 }
|
|
|
1925
|
|
|
1926
|
|
|
1927 static void
|
|
36
|
1928 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1929 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1930 {
|
|
112
|
1931 ngx_time_t *tp;
|
|
|
1932
|
|
32
|
1933 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1934 "finalize http upstream request: %i", rc);
|
|
28
|
1935
|
|
118
|
1936 *u->cleanup = NULL;
|
|
|
1937
|
|
112
|
1938 if (u->state->response_time) {
|
|
|
1939 tp = ngx_timeofday();
|
|
|
1940 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1941 - u->state->response_time;
|
|
|
1942 }
|
|
|
1943
|
|
28
|
1944 u->finalize_request(r, rc);
|
|
|
1945
|
|
|
1946 if (u->peer.connection) {
|
|
|
1947 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1948 "close http upstream connection: %d",
|
|
|
1949 u->peer.connection->fd);
|
|
126
|
1950 #if (NGX_HTTP_SSL)
|
|
|
1951
|
|
|
1952 /* TODO: do not shutdown persistent connection */
|
|
|
1953
|
|
|
1954 if (u->peer.connection->ssl) {
|
|
|
1955 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1956 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1957 }
|
|
|
1958 #endif
|
|
28
|
1959 ngx_close_connection(u->peer.connection);
|
|
|
1960 }
|
|
|
1961
|
|
32
|
1962 u->peer.connection = NULL;
|
|
|
1963
|
|
112
|
1964 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1965 {
|
|
|
1966 rc = 0;
|
|
|
1967 }
|
|
|
1968
|
|
130
|
1969 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1970 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1971 "http upstream temp fd: %d",
|
|
130
|
1972 u->pipe->temp_file->file.fd);
|
|
28
|
1973 }
|
|
|
1974
|
|
|
1975 #if 0
|
|
|
1976 if (u->cache) {
|
|
|
1977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1978 "http upstream cache fd: %d",
|
|
28
|
1979 u->cache->ctx.file.fd);
|
|
|
1980 }
|
|
|
1981 #endif
|
|
|
1982
|
|
64
|
1983 if (rc == NGX_DECLINED) {
|
|
|
1984 return;
|
|
|
1985 }
|
|
|
1986
|
|
32
|
1987 r->connection->log->action = "sending to client";
|
|
|
1988
|
|
178
|
1989 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
1990 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
1991 }
|
|
|
1992
|
|
|
1993 ngx_http_finalize_request(r, rc);
|
|
|
1994 }
|
|
|
1995
|
|
|
1996
|
|
126
|
1997 #if (NGX_HTTP_SSL)
|
|
|
1998
|
|
|
1999 static void
|
|
|
2000 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
2001 {
|
|
|
2002 /* lock peer mutex */
|
|
|
2003
|
|
|
2004 if (peer->ssl_session) {
|
|
|
2005 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2006 }
|
|
|
2007
|
|
|
2008 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2009
|
|
|
2010 /* unlock peer mutex */
|
|
|
2011
|
|
|
2012 /*
|
|
|
2013 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2014 * and do not wait its "close notify" shutdown alert.
|
|
|
2015 * It is acceptable according to the TLS standard.
|
|
|
2016 */
|
|
|
2017
|
|
|
2018 c->ssl->no_wait_shutdown = 1;
|
|
|
2019
|
|
|
2020 (void) ngx_ssl_shutdown(c);
|
|
|
2021 }
|
|
|
2022
|
|
|
2023 #endif
|
|
|
2024
|
|
|
2025
|
|
58
|
2026 static ngx_int_t
|
|
|
2027 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2028 ngx_uint_t offset)
|
|
126
|
2029 {
|
|
58
|
2030 ngx_table_elt_t **ph;
|
|
126
|
2031
|
|
58
|
2032 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2033
|
|
|
2034 if (*ph == NULL) {
|
|
|
2035 *ph = h;
|
|
|
2036 }
|
|
|
2037
|
|
|
2038 return NGX_OK;
|
|
|
2039 }
|
|
|
2040
|
|
|
2041
|
|
|
2042 static ngx_int_t
|
|
|
2043 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2044 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2045 {
|
|
|
2046 ngx_array_t *pa;
|
|
|
2047 ngx_table_elt_t **ph;
|
|
|
2048
|
|
|
2049 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2050
|
|
|
2051 if (pa->elts == NULL) {
|
|
|
2052 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2053 {
|
|
|
2054 return NGX_ERROR;
|
|
|
2055 }
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 ph = ngx_array_push(pa);
|
|
|
2059 if (ph == NULL) {
|
|
|
2060 return NGX_ERROR;
|
|
|
2061 }
|
|
|
2062
|
|
|
2063 *ph = h;
|
|
|
2064
|
|
|
2065 return NGX_OK;
|
|
|
2066 }
|
|
|
2067
|
|
|
2068
|
|
|
2069 static ngx_int_t
|
|
|
2070 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2071 ngx_uint_t offset)
|
|
|
2072 {
|
|
|
2073 return NGX_OK;
|
|
|
2074 }
|
|
|
2075
|
|
|
2076
|
|
|
2077 static ngx_int_t
|
|
76
|
2078 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2079 ngx_uint_t offset)
|
|
126
|
2080 {
|
|
76
|
2081 ngx_int_t n;
|
|
|
2082
|
|
|
2083 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2084
|
|
|
2085 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2086
|
|
|
2087 if (n != NGX_ERROR) {
|
|
|
2088 r->limit_rate = (size_t) n;
|
|
|
2089 }
|
|
|
2090
|
|
|
2091 return NGX_OK;
|
|
|
2092 }
|
|
|
2093
|
|
|
2094
|
|
|
2095 static ngx_int_t
|
|
198
|
2096 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2097 ngx_uint_t offset)
|
|
|
2098 {
|
|
|
2099 u_char c0, c1, c2;
|
|
|
2100
|
|
|
2101 if (r->upstream->conf->change_buffering) {
|
|
|
2102
|
|
|
2103 if (h->value.len == 2) {
|
|
|
2104 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2105 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2106
|
|
|
2107 if (c0 == 'n' && c1 == 'o') {
|
|
|
2108 r->upstream->buffering = 0;
|
|
|
2109 }
|
|
|
2110
|
|
|
2111 } else if (h->value.len == 3) {
|
|
|
2112 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2113 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2114 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2115
|
|
|
2116 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2117 r->upstream->buffering = 1;
|
|
|
2118 }
|
|
|
2119 }
|
|
|
2120 }
|
|
|
2121
|
|
|
2122 return NGX_OK;
|
|
|
2123 }
|
|
|
2124
|
|
|
2125
|
|
|
2126 static ngx_int_t
|
|
206
|
2127 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2128 ngx_uint_t offset)
|
|
|
2129 {
|
|
|
2130 r->headers_out.override_charset = &h->value;
|
|
|
2131
|
|
|
2132 return NGX_OK;
|
|
|
2133 }
|
|
|
2134
|
|
|
2135
|
|
|
2136 static ngx_int_t
|
|
58
|
2137 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2138 ngx_uint_t offset)
|
|
|
2139 {
|
|
122
|
2140 ngx_table_elt_t *ho, **ph;
|
|
58
|
2141
|
|
|
2142 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2143 if (ho == NULL) {
|
|
|
2144 return NGX_ERROR;
|
|
|
2145 }
|
|
|
2146
|
|
|
2147 *ho = *h;
|
|
|
2148
|
|
122
|
2149 if (offset) {
|
|
|
2150 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2151 *ph = ho;
|
|
|
2152 }
|
|
|
2153
|
|
58
|
2154 return NGX_OK;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157
|
|
|
2158 static ngx_int_t
|
|
|
2159 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2160 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2161 {
|
|
|
2162 ngx_array_t *pa;
|
|
|
2163 ngx_table_elt_t *ho, **ph;
|
|
|
2164
|
|
|
2165 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2166
|
|
|
2167 if (pa->elts == NULL) {
|
|
|
2168 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2169 {
|
|
|
2170 return NGX_ERROR;
|
|
|
2171 }
|
|
|
2172 }
|
|
|
2173
|
|
|
2174 ph = ngx_array_push(pa);
|
|
|
2175 if (ph == NULL) {
|
|
|
2176 return NGX_ERROR;
|
|
|
2177 }
|
|
|
2178
|
|
|
2179 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2180 if (ho == NULL) {
|
|
|
2181 return NGX_ERROR;
|
|
|
2182 }
|
|
|
2183
|
|
|
2184 *ho = *h;
|
|
|
2185 *ph = ho;
|
|
|
2186
|
|
|
2187 return NGX_OK;
|
|
|
2188 }
|
|
|
2189
|
|
|
2190
|
|
|
2191 static ngx_int_t
|
|
|
2192 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2193 ngx_uint_t offset)
|
|
|
2194 {
|
|
206
|
2195 u_char *p, *last;
|
|
|
2196
|
|
|
2197 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2198 r->headers_out.content_type = h->value;
|
|
|
2199
|
|
206
|
2200 for (p = h->value.data; *p; p++) {
|
|
|
2201
|
|
|
2202 if (*p != ';') {
|
|
|
2203 continue;
|
|
|
2204 }
|
|
|
2205
|
|
|
2206 last = p;
|
|
|
2207
|
|
|
2208 while (*++p == ' ') { /* void */ }
|
|
|
2209
|
|
|
2210 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
|
2211 continue;
|
|
|
2212 }
|
|
|
2213
|
|
|
2214 p += 8;
|
|
|
2215
|
|
|
2216 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2217
|
|
|
2218 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2219 r->headers_out.charset.data = p;
|
|
|
2220 }
|
|
|
2221
|
|
58
|
2222 return NGX_OK;
|
|
|
2223 }
|
|
|
2224
|
|
|
2225
|
|
|
2226 static ngx_int_t
|
|
|
2227 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2228 ngx_uint_t offset)
|
|
|
2229 {
|
|
|
2230 ngx_table_elt_t *ho;
|
|
|
2231
|
|
|
2232 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2233 if (ho == NULL) {
|
|
|
2234 return NGX_ERROR;
|
|
|
2235 }
|
|
|
2236
|
|
|
2237 *ho = *h;
|
|
|
2238
|
|
|
2239 r->headers_out.content_length = ho;
|
|
|
2240 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2241
|
|
|
2242 return NGX_OK;
|
|
|
2243 }
|
|
|
2244
|
|
|
2245
|
|
|
2246 static ngx_int_t
|
|
|
2247 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2248 ngx_uint_t offset)
|
|
|
2249 {
|
|
|
2250 ngx_int_t rc;
|
|
|
2251 ngx_table_elt_t *ho;
|
|
|
2252
|
|
|
2253 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2254 if (ho == NULL) {
|
|
|
2255 return NGX_ERROR;
|
|
|
2256 }
|
|
|
2257
|
|
|
2258 *ho = *h;
|
|
|
2259
|
|
|
2260 if (r->upstream->rewrite_redirect) {
|
|
|
2261 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2262
|
|
78
|
2263 if (rc == NGX_DECLINED) {
|
|
|
2264 return NGX_OK;
|
|
|
2265 }
|
|
|
2266
|
|
58
|
2267 if (rc == NGX_OK) {
|
|
|
2268 r->headers_out.location = ho;
|
|
|
2269
|
|
|
2270 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2271 "rewritten location: \"%V\"", &ho->value);
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 return rc;
|
|
|
2275 }
|
|
|
2276
|
|
|
2277 /*
|
|
|
2278 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2279 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2280 */
|
|
|
2281
|
|
|
2282 return NGX_OK;
|
|
|
2283 }
|
|
|
2284
|
|
|
2285
|
|
|
2286 static ngx_int_t
|
|
|
2287 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2288 ngx_uint_t offset)
|
|
|
2289 {
|
|
|
2290 u_char *p;
|
|
|
2291 ngx_int_t rc;
|
|
|
2292 ngx_table_elt_t *ho;
|
|
|
2293
|
|
|
2294 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2295 if (ho == NULL) {
|
|
|
2296 return NGX_ERROR;
|
|
|
2297 }
|
|
|
2298
|
|
|
2299 *ho = *h;
|
|
|
2300
|
|
|
2301 if (r->upstream->rewrite_redirect) {
|
|
|
2302
|
|
|
2303 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2304
|
|
|
2305 if (p) {
|
|
|
2306 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2307
|
|
|
2308 } else {
|
|
|
2309 return NGX_OK;
|
|
|
2310 }
|
|
|
2311
|
|
78
|
2312 if (rc == NGX_DECLINED) {
|
|
|
2313 return NGX_OK;
|
|
|
2314 }
|
|
|
2315
|
|
58
|
2316 #if (NGX_DEBUG)
|
|
|
2317 if (rc == NGX_OK) {
|
|
|
2318 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2319 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2320 }
|
|
|
2321 #endif
|
|
|
2322
|
|
|
2323 return rc;
|
|
|
2324 }
|
|
|
2325
|
|
|
2326 return NGX_OK;
|
|
|
2327 }
|
|
|
2328
|
|
|
2329
|
|
|
2330 #if (NGX_HTTP_GZIP)
|
|
|
2331
|
|
|
2332 static ngx_int_t
|
|
|
2333 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2334 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2335 {
|
|
|
2336 ngx_table_elt_t *ho;
|
|
|
2337
|
|
|
2338 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2339 if (ho == NULL) {
|
|
|
2340 return NGX_ERROR;
|
|
|
2341 }
|
|
|
2342
|
|
|
2343 *ho = *h;
|
|
|
2344
|
|
|
2345 r->headers_out.content_encoding = ho;
|
|
|
2346
|
|
|
2347 return NGX_OK;
|
|
|
2348 }
|
|
|
2349
|
|
|
2350 #endif
|
|
|
2351
|
|
|
2352
|
|
36
|
2353 static size_t
|
|
|
2354 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2355 {
|
|
|
2356 if (r->upstream) {
|
|
|
2357 return r->upstream->states.nelts * (3 + 2);
|
|
|
2358 }
|
|
|
2359
|
|
|
2360 return 1;
|
|
|
2361 }
|
|
|
2362
|
|
|
2363
|
|
36
|
2364 static u_char *
|
|
|
2365 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2366 ngx_http_log_op_t *op)
|
|
28
|
2367 {
|
|
|
2368 ngx_uint_t i;
|
|
|
2369 ngx_http_upstream_t *u;
|
|
|
2370 ngx_http_upstream_state_t *state;
|
|
|
2371
|
|
|
2372 u = r->upstream;
|
|
|
2373
|
|
122
|
2374 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2375 *buf = '-';
|
|
|
2376 return buf + 1;
|
|
|
2377 }
|
|
|
2378
|
|
|
2379 i = 0;
|
|
|
2380 state = u->states.elts;
|
|
|
2381
|
|
|
2382 for ( ;; ) {
|
|
|
2383 if (state[i].status == 0) {
|
|
|
2384 *buf++ = '-';
|
|
|
2385
|
|
|
2386 } else {
|
|
|
2387 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2388 }
|
|
|
2389
|
|
|
2390 if (++i == u->states.nelts) {
|
|
|
2391 return buf;
|
|
|
2392 }
|
|
|
2393
|
|
|
2394 *buf++ = ',';
|
|
|
2395 *buf++ = ' ';
|
|
|
2396 }
|
|
|
2397 }
|
|
|
2398
|
|
|
2399
|
|
122
|
2400 static size_t
|
|
|
2401 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2402 uintptr_t data)
|
|
|
2403 {
|
|
|
2404 if (r->upstream) {
|
|
|
2405 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2406 }
|
|
|
2407
|
|
|
2408 return 1;
|
|
|
2409 }
|
|
|
2410
|
|
|
2411
|
|
58
|
2412 static u_char *
|
|
112
|
2413 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2414 ngx_http_log_op_t *op)
|
|
|
2415 {
|
|
|
2416 ngx_uint_t i;
|
|
|
2417 ngx_http_upstream_t *u;
|
|
|
2418 ngx_http_upstream_state_t *state;
|
|
|
2419
|
|
|
2420 u = r->upstream;
|
|
|
2421
|
|
122
|
2422 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2423 *buf = '-';
|
|
|
2424 return buf + 1;
|
|
|
2425 }
|
|
|
2426
|
|
|
2427 i = 0;
|
|
|
2428 state = u->states.elts;
|
|
|
2429
|
|
|
2430 for ( ;; ) {
|
|
|
2431 if (state[i].status == 0) {
|
|
|
2432 *buf++ = '-';
|
|
|
2433
|
|
|
2434 } else {
|
|
|
2435 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2436 state[i].response_time / 1000,
|
|
|
2437 state[i].response_time % 1000);
|
|
|
2438 }
|
|
|
2439
|
|
|
2440 if (++i == u->states.nelts) {
|
|
|
2441 return buf;
|
|
|
2442 }
|
|
|
2443
|
|
|
2444 *buf++ = ',';
|
|
|
2445 *buf++ = ' ';
|
|
|
2446 }
|
|
|
2447 }
|
|
|
2448
|
|
|
2449
|
|
36
|
2450 static ngx_int_t
|
|
122
|
2451 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2452 {
|
|
122
|
2453 ngx_http_variable_t *var, *v;
|
|
28
|
2454 ngx_http_log_op_name_t *op;
|
|
|
2455
|
|
122
|
2456 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2457 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2458 if (var == NULL) {
|
|
|
2459 return NGX_ERROR;
|
|
|
2460 }
|
|
|
2461
|
|
186
|
2462 var->get_handler = v->get_handler;
|
|
122
|
2463 var->data = v->data;
|
|
|
2464 }
|
|
|
2465
|
|
28
|
2466 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2467 op->run = NULL;
|
|
|
2468
|
|
|
2469 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2470 if (op->name.len == 0) {
|
|
|
2471 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2472 }
|
|
|
2473 }
|
|
|
2474
|
|
|
2475 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2476
|
|
|
2477 return NGX_OK;
|
|
|
2478 }
|
|
58
|
2479
|
|
|
2480
|
|
122
|
2481 static ngx_int_t
|
|
|
2482 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2483 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2484 {
|
|
|
2485 u_char *p;
|
|
|
2486 size_t len;
|
|
|
2487 ngx_uint_t i;
|
|
|
2488 ngx_http_upstream_t *u;
|
|
|
2489 ngx_http_upstream_state_t *state;
|
|
|
2490
|
|
|
2491 v->valid = 1;
|
|
|
2492 v->no_cachable = 0;
|
|
|
2493 v->not_found = 0;
|
|
|
2494
|
|
|
2495 u = r->upstream;
|
|
|
2496
|
|
|
2497 if (u == NULL || u->states.nelts == 0) {
|
|
|
2498 v->not_found = 1;
|
|
|
2499 return NGX_OK;
|
|
|
2500 }
|
|
|
2501
|
|
|
2502 len = u->states.nelts * (3 + 2);
|
|
|
2503
|
|
|
2504 p = ngx_palloc(r->pool, len);
|
|
|
2505 if (p == NULL) {
|
|
|
2506 return NGX_ERROR;
|
|
|
2507 }
|
|
|
2508
|
|
|
2509 v->data = p;
|
|
|
2510
|
|
|
2511 i = 0;
|
|
|
2512 state = u->states.elts;
|
|
|
2513
|
|
|
2514 for ( ;; ) {
|
|
|
2515 if (state[i].status == 0) {
|
|
|
2516 *p++ = '-';
|
|
|
2517
|
|
|
2518 } else {
|
|
|
2519 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2520 }
|
|
|
2521
|
|
|
2522 if (++i == u->states.nelts) {
|
|
|
2523 break;
|
|
|
2524 }
|
|
|
2525
|
|
|
2526 *p++ = ',';
|
|
|
2527 *p++ = ' ';
|
|
|
2528 }
|
|
|
2529
|
|
|
2530 v->len = p - v->data;
|
|
|
2531
|
|
|
2532 return NGX_OK;
|
|
|
2533 }
|
|
|
2534
|
|
|
2535
|
|
|
2536 static ngx_int_t
|
|
|
2537 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2538 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2539 {
|
|
|
2540 u_char *p;
|
|
|
2541 size_t len;
|
|
|
2542 ngx_uint_t i;
|
|
|
2543 ngx_http_upstream_t *u;
|
|
|
2544 ngx_http_upstream_state_t *state;
|
|
|
2545
|
|
|
2546 v->valid = 1;
|
|
|
2547 v->no_cachable = 0;
|
|
|
2548 v->not_found = 0;
|
|
|
2549
|
|
|
2550 u = r->upstream;
|
|
|
2551
|
|
|
2552 if (u == NULL || u->states.nelts == 0) {
|
|
|
2553 v->not_found = 1;
|
|
|
2554 return NGX_OK;
|
|
|
2555 }
|
|
|
2556
|
|
|
2557 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2558
|
|
|
2559 p = ngx_palloc(r->pool, len);
|
|
|
2560 if (p == NULL) {
|
|
|
2561 return NGX_ERROR;
|
|
|
2562 }
|
|
|
2563
|
|
|
2564 v->data = p;
|
|
|
2565
|
|
|
2566 i = 0;
|
|
|
2567 state = u->states.elts;
|
|
|
2568
|
|
|
2569 for ( ;; ) {
|
|
|
2570 if (state[i].status == 0) {
|
|
|
2571 *p++ = '-';
|
|
|
2572
|
|
|
2573 } else {
|
|
|
2574 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2575 state[i].response_time / 1000,
|
|
|
2576 state[i].response_time % 1000);
|
|
|
2577 }
|
|
|
2578
|
|
|
2579 if (++i == u->states.nelts) {
|
|
|
2580 break;
|
|
|
2581 }
|
|
|
2582
|
|
|
2583 *p++ = ',';
|
|
|
2584 *p++ = ' ';
|
|
|
2585 }
|
|
|
2586
|
|
|
2587 v->len = p - v->data;
|
|
|
2588
|
|
|
2589 return NGX_OK;
|
|
|
2590 }
|
|
|
2591
|
|
|
2592
|
|
200
|
2593 static char *
|
|
|
2594 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2595 {
|
|
|
2596 char *rv;
|
|
|
2597 void *mconf;
|
|
|
2598 ngx_str_t *value;
|
|
|
2599 ngx_url_t u;
|
|
|
2600 ngx_uint_t i, j, m, n;
|
|
|
2601 ngx_conf_t pcf;
|
|
|
2602 ngx_peers_t **peers;
|
|
|
2603 ngx_http_module_t *module;
|
|
|
2604 ngx_http_conf_ctx_t *ctx;
|
|
|
2605 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2606
|
|
|
2607 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2608 if (ctx == NULL) {
|
|
|
2609 return NGX_CONF_ERROR;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2613
|
|
|
2614 value = cf->args->elts;
|
|
|
2615 u.host = value[1];
|
|
|
2616
|
|
|
2617 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2618 if (uscf == NULL) {
|
|
|
2619 return NGX_CONF_ERROR;
|
|
|
2620 }
|
|
|
2621
|
|
|
2622 /* the upstream{}'s srv_conf */
|
|
|
2623
|
|
|
2624 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2625 if (ctx->srv_conf == NULL) {
|
|
|
2626 return NGX_CONF_ERROR;
|
|
|
2627 }
|
|
|
2628
|
|
|
2629 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2630
|
|
|
2631
|
|
|
2632 /* the upstream{}'s loc_conf */
|
|
|
2633
|
|
|
2634 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2635 if (ctx->loc_conf == NULL) {
|
|
|
2636 return NGX_CONF_ERROR;
|
|
|
2637 }
|
|
|
2638
|
|
|
2639 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2640 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2641 continue;
|
|
|
2642 }
|
|
|
2643
|
|
|
2644 module = ngx_modules[m]->ctx;
|
|
|
2645
|
|
|
2646 if (module->create_loc_conf) {
|
|
|
2647 mconf = module->create_loc_conf(cf);
|
|
|
2648 if (mconf == NULL) {
|
|
|
2649 return NGX_CONF_ERROR;
|
|
|
2650 }
|
|
|
2651
|
|
|
2652 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2653 }
|
|
|
2654 }
|
|
|
2655
|
|
|
2656
|
|
|
2657 /* parse inside upstream{} */
|
|
|
2658
|
|
|
2659 pcf = *cf;
|
|
|
2660 cf->ctx = ctx;
|
|
|
2661 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2662
|
|
|
2663 rv = ngx_conf_parse(cf, NULL);
|
|
|
2664
|
|
|
2665 *cf = pcf;
|
|
|
2666
|
|
|
2667 if (rv != NGX_CONF_OK) {
|
|
|
2668 return rv;
|
|
|
2669 }
|
|
|
2670
|
|
|
2671 if (uscf->servers == NULL) {
|
|
|
2672 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2673 "no servers are inside upstream");
|
|
|
2674 return NGX_CONF_ERROR;
|
|
|
2675 }
|
|
|
2676
|
|
|
2677 peers = uscf->servers->elts;
|
|
|
2678
|
|
|
2679 if (uscf->servers->nelts == 1) {
|
|
|
2680 uscf->peers = peers[0];
|
|
|
2681 }
|
|
|
2682
|
|
|
2683 n = 0;
|
|
|
2684
|
|
|
2685 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2686 n += peers[i]->number;
|
|
|
2687 }
|
|
|
2688
|
|
|
2689 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2690 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2691 if (uscf->peers == NULL) {
|
|
|
2692 return NGX_CONF_ERROR;
|
|
|
2693 }
|
|
|
2694
|
|
|
2695 uscf->peers->number = n;
|
|
|
2696
|
|
|
2697 n = 0;
|
|
|
2698
|
|
|
2699 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2700 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2701 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2702 }
|
|
|
2703 }
|
|
|
2704
|
|
|
2705 return rv;
|
|
|
2706 }
|
|
|
2707
|
|
|
2708
|
|
|
2709 static char *
|
|
|
2710 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2711 {
|
|
|
2712 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2713
|
|
|
2714 ngx_str_t *value;
|
|
|
2715 ngx_url_t u;
|
|
212
|
2716 ngx_int_t weight;
|
|
|
2717 ngx_uint_t i;
|
|
200
|
2718 ngx_peers_t **peers;
|
|
|
2719
|
|
|
2720 if (uscf->servers == NULL) {
|
|
|
2721 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2722 if (uscf->servers == NULL) {
|
|
|
2723 return NGX_CONF_ERROR;
|
|
|
2724 }
|
|
|
2725 }
|
|
|
2726
|
|
|
2727 peers = ngx_array_push(uscf->servers);
|
|
|
2728 if (peers == NULL) {
|
|
|
2729 return NGX_CONF_ERROR;
|
|
|
2730 }
|
|
|
2731
|
|
|
2732 value = cf->args->elts;
|
|
|
2733
|
|
|
2734 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2735
|
|
|
2736 u.url = value[1];
|
|
|
2737 u.default_portn = 80;
|
|
|
2738
|
|
|
2739 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2740 if (u.err) {
|
|
|
2741 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2742 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2743 }
|
|
|
2744
|
|
|
2745 return NGX_CONF_ERROR;
|
|
|
2746 }
|
|
|
2747
|
|
212
|
2748 weight = 1;
|
|
|
2749
|
|
|
2750 if (cf->args->nelts == 3) {
|
|
|
2751
|
|
|
2752 value = &value[2];
|
|
|
2753
|
|
|
2754 if (ngx_strncmp(value->data, "weight=", 7) == 0) {
|
|
|
2755
|
|
|
2756 weight = ngx_atoi(&value->data[7], value->len - 7);
|
|
|
2757
|
|
|
2758 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2759 goto invalid;
|
|
|
2760 }
|
|
|
2761
|
|
|
2762 } else {
|
|
|
2763 goto invalid;
|
|
|
2764 }
|
|
|
2765 }
|
|
|
2766
|
|
|
2767 for (i = 0; i < u.peers->number; i++) {
|
|
|
2768 u.peers->peer[i].weight = weight;
|
|
|
2769 u.peers->peer[i].current_weight = weight;
|
|
|
2770 u.peers->peer[i].max_fails = NGX_CONF_UNSET_UINT;
|
|
|
2771 u.peers->peer[i].fail_timeout = NGX_CONF_UNSET;
|
|
|
2772 }
|
|
|
2773
|
|
200
|
2774 *peers = u.peers;
|
|
|
2775
|
|
|
2776 return NGX_CONF_OK;
|
|
212
|
2777
|
|
|
2778 invalid:
|
|
|
2779
|
|
|
2780 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", value);
|
|
|
2781
|
|
|
2782 return NGX_CONF_ERROR;
|
|
200
|
2783 }
|
|
|
2784
|
|
|
2785
|
|
|
2786 ngx_http_upstream_srv_conf_t *
|
|
|
2787 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2788 {
|
|
|
2789 ngx_uint_t i;
|
|
|
2790 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2791 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2792
|
|
|
2793 if (u->upstream) {
|
|
|
2794 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2795 if (u->err) {
|
|
|
2796 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2797 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2798 }
|
|
|
2799
|
|
|
2800 return NULL;
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 if (u->peers) {
|
|
|
2804 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2805 if (uscf == NULL) {
|
|
|
2806 return NULL;
|
|
|
2807 }
|
|
|
2808
|
|
|
2809 uscf->peers = u->peers;
|
|
|
2810
|
|
|
2811 return uscf;
|
|
|
2812 }
|
|
|
2813 }
|
|
|
2814
|
|
|
2815 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2816
|
|
|
2817 uscfp = umcf->upstreams.elts;
|
|
|
2818
|
|
|
2819 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2820 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2821 continue;
|
|
|
2822 }
|
|
|
2823
|
|
|
2824 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2825 == 0)
|
|
|
2826 {
|
|
|
2827 return uscfp[i];
|
|
|
2828 }
|
|
|
2829 }
|
|
|
2830
|
|
|
2831 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2832 if (uscf == NULL) {
|
|
|
2833 return NULL;
|
|
|
2834 }
|
|
|
2835
|
|
|
2836 uscf->host = u->host;
|
|
|
2837 uscf->file_name = cf->conf_file->file.name;
|
|
|
2838 uscf->line = cf->conf_file->line;
|
|
|
2839 uscf->port = u->default_portn;
|
|
|
2840
|
|
|
2841 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2842 if (uscfp == NULL) {
|
|
|
2843 return NULL;
|
|
|
2844 }
|
|
|
2845
|
|
|
2846 *uscfp = uscf;
|
|
|
2847
|
|
|
2848 return uscf;
|
|
|
2849 }
|
|
|
2850
|
|
|
2851
|
|
58
|
2852 static void *
|
|
|
2853 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2854 {
|
|
|
2855 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2856
|
|
|
2857 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2858 if (umcf == NULL) {
|
|
|
2859 return NULL;
|
|
|
2860 }
|
|
|
2861
|
|
200
|
2862 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2863 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2864 != NGX_OK)
|
|
|
2865 {
|
|
|
2866 return NGX_CONF_ERROR;
|
|
|
2867 }
|
|
|
2868
|
|
58
|
2869 return umcf;
|
|
|
2870 }
|
|
|
2871
|
|
|
2872
|
|
|
2873 static char *
|
|
200
|
2874 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
2875 {
|
|
|
2876 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2877
|
|
200
|
2878 ngx_uint_t i;
|
|
|
2879 ngx_array_t headers_in;
|
|
|
2880 ngx_hash_key_t *hk;
|
|
|
2881 ngx_hash_init_t hash;
|
|
|
2882 ngx_http_upstream_header_t *header;
|
|
|
2883 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
2884
|
|
|
2885 uscfp = umcf->upstreams.elts;
|
|
|
2886
|
|
|
2887 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2888 if (uscfp[i]->peers) {
|
|
|
2889 continue;
|
|
|
2890 }
|
|
|
2891
|
|
|
2892 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
212
|
2893 uscfp[i]->port);
|
|
200
|
2894 if (uscfp[i]->peers == NULL) {
|
|
|
2895 return NGX_CONF_ERROR;
|
|
|
2896 }
|
|
|
2897
|
|
|
2898 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
2899 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
2900 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
2901 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
2902 uscfp[i]->line);
|
|
|
2903 return NGX_CONF_ERROR;
|
|
|
2904 }
|
|
|
2905 }
|
|
198
|
2906
|
|
212
|
2907
|
|
198
|
2908 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2909 != NGX_OK)
|
|
58
|
2910 {
|
|
|
2911 return NGX_CONF_ERROR;
|
|
|
2912 }
|
|
|
2913
|
|
198
|
2914 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2915 hk = ngx_array_push(&headers_in);
|
|
|
2916 if (hk == NULL) {
|
|
|
2917 return NGX_CONF_ERROR;
|
|
|
2918 }
|
|
|
2919
|
|
|
2920 hk->key = header->name;
|
|
|
2921 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2922 hk->value = header;
|
|
|
2923 }
|
|
|
2924
|
|
|
2925 hash.hash = &umcf->headers_in_hash;
|
|
|
2926 hash.key = ngx_hash_key_lc;
|
|
|
2927 hash.max_size = 512;
|
|
|
2928 hash.bucket_size = ngx_cacheline_size;
|
|
|
2929 hash.name = "upstream_headers_in_hash";
|
|
|
2930 hash.pool = cf->pool;
|
|
|
2931 hash.temp_pool = NULL;
|
|
|
2932
|
|
|
2933 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
2934 return NGX_CONF_ERROR;
|
|
|
2935 }
|
|
58
|
2936
|
|
|
2937 return NGX_CONF_OK;
|
|
|
2938 }
|
