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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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248
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24 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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26 ngx_http_upstream_t *u);
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130
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27 static void
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28 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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29 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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31 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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32 ssize_t bytes);
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58
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33 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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34 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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35 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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36 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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37 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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38 static void ngx_http_upstream_cleanup(void *data);
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28
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39 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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40 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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41
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58
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42 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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43 ngx_table_elt_t *h, ngx_uint_t offset);
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44 static ngx_int_t
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45 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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48 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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49 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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50 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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51 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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53 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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55 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t
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58 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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59 ngx_table_elt_t *h, ngx_uint_t offset);
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60 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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61 ngx_table_elt_t *h, ngx_uint_t offset);
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62 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 #if (NGX_HTTP_GZIP)
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69 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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70 ngx_table_elt_t *h, ngx_uint_t offset);
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71 #endif
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72
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28
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73 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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74 uintptr_t data);
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75 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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76 u_char *buf, ngx_http_log_op_t *op);
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122
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77 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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78 uintptr_t data);
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112
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79 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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80 u_char *buf, ngx_http_log_op_t *op);
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28
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81
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122
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82 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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83 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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84 ngx_http_variable_value_t *v, uintptr_t data);
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85 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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86 ngx_http_variable_value_t *v, uintptr_t data);
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87
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200
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88 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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89 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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90 void *conf);
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91
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58
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92 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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93 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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94
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126
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95 #if (NGX_HTTP_SSL)
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140
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96 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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97 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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98 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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99 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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100 ngx_peer_t *peer);
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101 #endif
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102
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58
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103
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104 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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105
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106 { ngx_string("Status"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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109 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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110
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111 { ngx_string("Content-Type"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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114 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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115
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116 { ngx_string("Content-Length"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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119 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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120
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121 { ngx_string("Date"),
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122 ngx_http_upstream_process_header_line,
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123 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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124 ngx_http_upstream_copy_header_line,
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125 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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126
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127 { ngx_string("Server"),
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128 ngx_http_upstream_process_header_line,
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129 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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130 ngx_http_upstream_copy_header_line,
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131 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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132
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78
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133 { ngx_string("WWW-Authenticate"),
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134 ngx_http_upstream_process_header_line,
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135 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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136 ngx_http_upstream_copy_header_line, 0, 0 },
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137
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58
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138 { ngx_string("Location"),
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139 ngx_http_upstream_ignore_header_line, 0,
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64
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140 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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141
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142 { ngx_string("Refresh"),
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143 ngx_http_upstream_ignore_header_line, 0,
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64
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144 ngx_http_upstream_rewrite_refresh, 0, 0 },
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145
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146 { ngx_string("Set-Cookie"),
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147 ngx_http_upstream_ignore_header_line, 0,
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80
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148 ngx_http_upstream_copy_header_line, 0, 1 },
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149
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150 { ngx_string("Content-Disposition"),
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151 ngx_http_upstream_ignore_header_line, 0,
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152 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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153
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154 { ngx_string("Cache-Control"),
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155 ngx_http_upstream_process_multi_header_lines,
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156 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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157 ngx_http_upstream_copy_multi_header_lines,
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64
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158 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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159
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122
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160 { ngx_string("Expires"),
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161 ngx_http_upstream_process_header_line,
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162 offsetof(ngx_http_upstream_headers_in_t, expires),
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163 ngx_http_upstream_copy_header_line,
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164 offsetof(ngx_http_headers_out_t, expires), 1 },
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165
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126
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166 { ngx_string("Accept-Ranges"),
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167 ngx_http_upstream_process_header_line,
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168 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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169 ngx_http_upstream_copy_header_line,
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170 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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171
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58
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172 { ngx_string("Connection"),
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173 ngx_http_upstream_ignore_header_line, 0,
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64
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174 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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175
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190
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176 { ngx_string("Keep-Alive"),
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177 ngx_http_upstream_ignore_header_line, 0,
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178 ngx_http_upstream_ignore_header_line, 0, 0 },
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179
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58
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180 { ngx_string("X-Powered-By"),
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181 ngx_http_upstream_ignore_header_line, 0,
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198
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182 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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183
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184 { ngx_string("X-Accel-Expires"),
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185 ngx_http_upstream_process_header_line,
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186 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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187 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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188
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189 { ngx_string("X-Accel-Redirect"),
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190 ngx_http_upstream_process_header_line,
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191 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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192 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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193
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76
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194 { ngx_string("X-Accel-Limit-Rate"),
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195 ngx_http_upstream_process_limit_rate, 0,
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196 ngx_http_upstream_ignore_header_line, 0, 0 },
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197
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198
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198 { ngx_string("X-Accel-Buffering"),
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199 ngx_http_upstream_process_buffering, 0,
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200 ngx_http_upstream_ignore_header_line, 0, 0 },
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201
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206
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202 { ngx_string("X-Accel-Charset"),
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203 ngx_http_upstream_process_charset, 0,
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204 ngx_http_upstream_ignore_header_line, 0, 0 },
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205
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58
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206 #if (NGX_HTTP_GZIP)
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207 { ngx_string("Content-Encoding"),
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208 ngx_http_upstream_process_header_line,
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209 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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210 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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211 #endif
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212
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64
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213 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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214 };
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28
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215
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216
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200
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217 static ngx_command_t ngx_http_upstream_commands[] = {
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218
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219 { ngx_string("upstream"),
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220 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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221 ngx_http_upstream,
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222 0,
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223 0,
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224 NULL },
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225
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226 { ngx_string("server"),
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212
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227 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE12,
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200
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228 ngx_http_upstream_server,
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229 NGX_HTTP_SRV_CONF_OFFSET,
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230 0,
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231 NULL },
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232
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233 ngx_null_command
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234 };
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235
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236
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237 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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238 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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239 NULL, /* postconfiguration */
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240
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241 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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242 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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243
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244 NULL, /* create server configuration */
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245 NULL, /* merge server configuration */
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246
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247 NULL, /* create location configuration */
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248 NULL /* merge location configuration */
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249 };
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126
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250
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28
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251
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252 ngx_module_t ngx_http_upstream_module = {
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58
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253 NGX_MODULE_V1,
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28
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254 &ngx_http_upstream_module_ctx, /* module context */
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200
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255 ngx_http_upstream_commands, /* module directives */
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28
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256 NGX_HTTP_MODULE, /* module type */
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90
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257 NULL, /* init master */
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28
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258 NULL, /* init module */
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90
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259 NULL, /* init process */
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260 NULL, /* init thread */
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261 NULL, /* exit thread */
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262 NULL, /* exit process */
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263 NULL, /* exit master */
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264 NGX_MODULE_V1_PADDING
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28
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265 };
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266
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267
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132
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268 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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269 { ngx_string("upstream_status"), 0, NULL,
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122
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270 ngx_http_upstream_log_status_getlen,
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271 ngx_http_upstream_log_status },
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272 { ngx_string("upstream_response_time"), 0, NULL,
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273 ngx_http_upstream_log_response_time_getlen,
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274 ngx_http_upstream_log_response_time },
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28
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275 { ngx_null_string, 0, NULL, NULL, NULL }
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276 };
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277
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278
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122
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279 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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280
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186
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281 { ngx_string("upstream_status"), NULL,
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132
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282 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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283
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186
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284 { ngx_string("upstream_response_time"), NULL,
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132
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285 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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286
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186
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287 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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288 };
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289
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290
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36
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291 void
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292 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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293 {
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58
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294 ngx_connection_t *c;
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118
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295 ngx_http_cleanup_t *cln;
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58
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296 ngx_http_upstream_t *u;
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297 ngx_http_core_loc_conf_t *clcf;
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28
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298
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299 c = r->connection;
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300
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301 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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302 "http init upstream, client timer: %d", c->read->timer_set);
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303
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304 if (c->read->timer_set) {
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305 ngx_del_timer(c->read);
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306 }
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307
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178
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308 u = r->upstream;
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309
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310 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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311 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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312 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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313 }
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126
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314
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28
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315 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
316
|
|
|
317 if (!c->write->active) {
|
|
80
|
318 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
319 == NGX_ERROR)
|
|
28
|
320 {
|
|
|
321 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
322 return;
|
|
|
323 }
|
|
|
324 }
|
|
|
325 }
|
|
|
326
|
|
86
|
327 if (r->request_body) {
|
|
|
328 u->request_bufs = r->request_body->bufs;
|
|
|
329 }
|
|
58
|
330
|
|
86
|
331 if (u->create_request(r) != NGX_OK) {
|
|
28
|
332 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
333 return;
|
|
|
334 }
|
|
|
335
|
|
|
336 u->peer.log = r->connection->log;
|
|
58
|
337
|
|
|
338 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
339
|
|
|
340 u->output.sendfile = r->connection->sendfile;
|
|
|
341 u->output.pool = r->pool;
|
|
|
342 u->output.bufs.num = 1;
|
|
58
|
343 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
344 u->output.output_filter = ngx_chain_writer;
|
|
|
345 u->output.filter_ctx = &u->writer;
|
|
|
346
|
|
|
347 u->writer.pool = r->pool;
|
|
|
348
|
|
|
349 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
350 sizeof(ngx_http_upstream_state_t))
|
|
|
351 != NGX_OK)
|
|
28
|
352 {
|
|
|
353 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
354 return;
|
|
|
355 }
|
|
|
356
|
|
142
|
357 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
358 if (cln == NULL) {
|
|
|
359 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
360 return;
|
|
|
361 }
|
|
|
362
|
|
|
363 cln->handler = ngx_http_upstream_cleanup;
|
|
|
364 cln->data = r;
|
|
|
365 u->cleanup = &cln->handler;
|
|
|
366
|
|
28
|
367 ngx_http_upstream_connect(r, u);
|
|
|
368 }
|
|
|
369
|
|
|
370
|
|
36
|
371 static void
|
|
58
|
372 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
373 {
|
|
|
374 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
375 }
|
|
|
376
|
|
|
377
|
|
|
378 static void
|
|
|
379 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
380 {
|
|
|
381 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
382 }
|
|
|
383
|
|
|
384
|
|
|
385 static void
|
|
|
386 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
387 ngx_event_t *ev)
|
|
28
|
388 {
|
|
|
389 int n;
|
|
|
390 char buf[1];
|
|
126
|
391 ngx_err_t err;
|
|
28
|
392 ngx_connection_t *c;
|
|
|
393 ngx_http_upstream_t *u;
|
|
|
394
|
|
76
|
395 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
396 "http upstream check client, write event:%d, \"%V\"",
|
|
|
397 ev->write, &r->uri);
|
|
28
|
398
|
|
58
|
399 c = r->connection;
|
|
32
|
400 u = r->upstream;
|
|
|
401
|
|
132
|
402 if (c->error) {
|
|
76
|
403 ngx_http_upstream_finalize_request(r, u,
|
|
|
404 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
405 return;
|
|
|
406 }
|
|
|
407
|
|
32
|
408 if (u->peer.connection == NULL) {
|
|
|
409 return;
|
|
|
410 }
|
|
|
411
|
|
28
|
412 #if (NGX_HAVE_KQUEUE)
|
|
|
413
|
|
|
414 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
415
|
|
|
416 if (!ev->pending_eof) {
|
|
|
417 return;
|
|
|
418 }
|
|
|
419
|
|
|
420 ev->eof = 1;
|
|
132
|
421 c->error = 1;
|
|
28
|
422
|
|
|
423 if (ev->kq_errno) {
|
|
|
424 ev->error = 1;
|
|
|
425 }
|
|
|
426
|
|
|
427 if (!u->cachable && u->peer.connection) {
|
|
|
428 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
429 "kevent() reported that client closed prematurely "
|
|
|
430 "connection, so upstream connection is closed too");
|
|
28
|
431 ngx_http_upstream_finalize_request(r, u,
|
|
|
432 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
433 return;
|
|
|
434 }
|
|
|
435
|
|
|
436 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
437 "kevent() reported that client closed "
|
|
|
438 "prematurely connection");
|
|
|
439
|
|
|
440 if (u->peer.connection == NULL) {
|
|
|
441 ngx_http_upstream_finalize_request(r, u,
|
|
|
442 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
443 return;
|
|
|
444 }
|
|
|
445
|
|
|
446 return;
|
|
|
447 }
|
|
|
448
|
|
|
449 #endif
|
|
|
450
|
|
|
451 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
452
|
|
|
453 err = ngx_socket_errno;
|
|
|
454
|
|
|
455 /*
|
|
|
456 * we do not need to disable the write event because
|
|
|
457 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
458 */
|
|
|
459
|
|
|
460 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
461 return;
|
|
|
462 }
|
|
|
463
|
|
|
464 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
465 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
466 ngx_http_upstream_finalize_request(r, u,
|
|
|
467 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
468 return;
|
|
|
469 }
|
|
|
470 }
|
|
|
471
|
|
|
472 if (n > 0) {
|
|
|
473 return;
|
|
|
474 }
|
|
|
475
|
|
|
476 if (n == -1) {
|
|
|
477 if (err == NGX_EAGAIN) {
|
|
|
478 return;
|
|
|
479 }
|
|
|
480
|
|
|
481 ev->error = 1;
|
|
|
482
|
|
32
|
483 } else { /* n == 0 */
|
|
28
|
484 err = 0;
|
|
|
485 }
|
|
|
486
|
|
78
|
487 ev->eof = 1;
|
|
132
|
488 c->error = 1;
|
|
78
|
489
|
|
28
|
490 if (!u->cachable && u->peer.connection) {
|
|
|
491 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
492 "client closed prematurely connection, "
|
|
|
493 "so upstream connection is closed too");
|
|
|
494 ngx_http_upstream_finalize_request(r, u,
|
|
|
495 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
496 return;
|
|
|
497 }
|
|
|
498
|
|
|
499 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
500 "client closed prematurely connection");
|
|
|
501
|
|
|
502 if (u->peer.connection == NULL) {
|
|
|
503 ngx_http_upstream_finalize_request(r, u,
|
|
|
504 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
505 return;
|
|
|
506 }
|
|
|
507 }
|
|
|
508
|
|
|
509
|
|
36
|
510 static void
|
|
|
511 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
512 {
|
|
140
|
513 ngx_int_t rc;
|
|
214
|
514 ngx_time_t *tp;
|
|
140
|
515 ngx_connection_t *c;
|
|
28
|
516
|
|
32
|
517 r->connection->log->action = "connecting to upstream";
|
|
28
|
518
|
|
|
519 r->connection->single_connection = 0;
|
|
|
520
|
|
214
|
521 if (u->state && u->state->response_time) {
|
|
|
522 tp = ngx_timeofday();
|
|
|
523 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
524 - u->state->response_time;
|
|
|
525 }
|
|
|
526
|
|
|
527 u->state = ngx_array_push(&u->states);
|
|
|
528 if (u->state == NULL) {
|
|
|
529 ngx_http_upstream_finalize_request(r, u,
|
|
|
530 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
531 return;
|
|
|
532 }
|
|
|
533
|
|
|
534 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
535
|
|
|
536 tp = ngx_timeofday();
|
|
|
537 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
538
|
|
28
|
539 rc = ngx_event_connect_peer(&u->peer);
|
|
|
540
|
|
|
541 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
542 "http upstream connect: %i", rc);
|
|
|
543
|
|
|
544 if (rc == NGX_ERROR) {
|
|
|
545 ngx_http_upstream_finalize_request(r, u,
|
|
|
546 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
547 return;
|
|
|
548 }
|
|
|
549
|
|
140
|
550 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
551
|
|
92
|
552 if (rc == NGX_BUSY) {
|
|
|
553 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
554 }
|
|
|
555
|
|
|
556 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
557 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
558 return;
|
|
|
559 }
|
|
|
560
|
|
126
|
561 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
562
|
|
28
|
563 c = u->peer.connection;
|
|
|
564
|
|
|
565 c->data = r;
|
|
140
|
566
|
|
58
|
567 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
568 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
569
|
|
|
570 c->sendfile = r->connection->sendfile;
|
|
|
571
|
|
|
572 c->pool = r->pool;
|
|
|
573 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
574
|
|
|
575 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
576
|
|
|
577 u->writer.out = NULL;
|
|
|
578 u->writer.last = &u->writer.out;
|
|
|
579 u->writer.connection = c;
|
|
|
580 u->writer.limit = 0;
|
|
|
581
|
|
|
582 if (u->request_sent) {
|
|
58
|
583 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
584 ngx_http_upstream_finalize_request(r, u,
|
|
|
585 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
586 return;
|
|
|
587 }
|
|
28
|
588 }
|
|
|
589
|
|
146
|
590 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
591
|
|
|
592 /*
|
|
|
593 * the r->request_body->buf can be reused for one request only,
|
|
|
594 * the subrequests should allocate their own temporay bufs
|
|
|
595 */
|
|
|
596
|
|
|
597 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
598 if (u->output.free == NULL) {
|
|
|
599 ngx_http_upstream_finalize_request(r, u,
|
|
|
600 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
601 return;
|
|
28
|
602 }
|
|
122
|
603
|
|
|
604 u->output.free->buf = r->request_body->buf;
|
|
|
605 u->output.free->next = NULL;
|
|
|
606 u->output.allocated = 1;
|
|
|
607
|
|
|
608 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
609 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
610 r->request_body->buf->tag = u->output.tag;
|
|
28
|
611 }
|
|
|
612
|
|
|
613 u->request_sent = 0;
|
|
|
614
|
|
|
615 if (rc == NGX_AGAIN) {
|
|
|
616 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
617 return;
|
|
|
618 }
|
|
|
619
|
|
126
|
620 #if (NGX_HTTP_SSL)
|
|
|
621
|
|
140
|
622 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
623 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
624 return;
|
|
|
625 }
|
|
|
626
|
|
|
627 #endif
|
|
|
628
|
|
28
|
629 ngx_http_upstream_send_request(r, u);
|
|
|
630 }
|
|
|
631
|
|
|
632
|
|
126
|
633 #if (NGX_HTTP_SSL)
|
|
|
634
|
|
|
635 static void
|
|
140
|
636 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
637 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
638 {
|
|
|
639 ngx_int_t rc;
|
|
|
640 ngx_peer_t *peer;
|
|
|
641
|
|
|
642 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
643 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
644 == NGX_ERROR)
|
|
|
645 {
|
|
|
646 ngx_http_upstream_finalize_request(r, u,
|
|
|
647 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
648 return;
|
|
|
649 }
|
|
|
650
|
|
|
651 c->sendfile = 0;
|
|
168
|
652 u->output.sendfile = 0;
|
|
140
|
653
|
|
|
654 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
655
|
|
|
656 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
657 ngx_http_upstream_finalize_request(r, u,
|
|
|
658 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
190
|
662 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
663
|
|
140
|
664 rc = ngx_ssl_handshake(c);
|
|
|
665
|
|
|
666 if (rc == NGX_AGAIN) {
|
|
|
667 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
668 return;
|
|
|
669 }
|
|
|
670
|
|
|
671 ngx_http_upstream_ssl_handshake(c);
|
|
|
672 }
|
|
|
673
|
|
|
674
|
|
|
675 static void
|
|
126
|
676 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
677 {
|
|
|
678 ngx_http_request_t *r;
|
|
|
679 ngx_http_upstream_t *u;
|
|
|
680
|
|
|
681 r = c->data;
|
|
|
682 u = r->upstream;
|
|
|
683
|
|
|
684 if (c->ssl->handshaked) {
|
|
|
685
|
|
|
686 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
687 c->read->handler = ngx_http_upstream_process_header;
|
|
|
688
|
|
|
689 ngx_http_upstream_send_request(r, u);
|
|
|
690
|
|
|
691 return;
|
|
|
692 }
|
|
|
693
|
|
|
694 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
695
|
|
|
696 }
|
|
|
697
|
|
|
698 #endif
|
|
|
699
|
|
|
700
|
|
58
|
701 static ngx_int_t
|
|
36
|
702 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
703 {
|
|
|
704 ngx_chain_t *cl;
|
|
|
705
|
|
58
|
706 if (u->reinit_request(r) != NGX_OK) {
|
|
|
707 return NGX_ERROR;
|
|
|
708 }
|
|
|
709
|
|
|
710 ngx_memzero(&r->upstream->headers_in,
|
|
|
711 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
712
|
|
|
713 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
714 sizeof(ngx_table_elt_t))
|
|
|
715 != NGX_OK)
|
|
58
|
716 {
|
|
|
717 return NGX_ERROR;
|
|
28
|
718 }
|
|
|
719
|
|
|
720 /* reinit the request chain */
|
|
126
|
721
|
|
58
|
722 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
723 cl->buf->pos = cl->buf->start;
|
|
|
724 cl->buf->file_pos = 0;
|
|
|
725 }
|
|
|
726
|
|
58
|
727 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
728
|
|
122
|
729 if (r->request_body && r->request_body->temp_file
|
|
146
|
730 && r != r->main && u->output.buf)
|
|
122
|
731 {
|
|
|
732 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
733 if (u->output.free == NULL) {
|
|
|
734 return NGX_ERROR;
|
|
58
|
735 }
|
|
122
|
736
|
|
|
737 u->output.free->buf = u->output.buf;
|
|
|
738 u->output.free->next = NULL;
|
|
|
739
|
|
|
740 u->output.buf->pos = u->output.buf->start;
|
|
|
741 u->output.buf->last = u->output.buf->start;
|
|
58
|
742 }
|
|
28
|
743
|
|
|
744 u->output.buf = NULL;
|
|
|
745 u->output.in = NULL;
|
|
|
746 u->output.busy = NULL;
|
|
126
|
747
|
|
130
|
748 /* reinit u->buffer */
|
|
126
|
749
|
|
28
|
750 #if 0
|
|
|
751 if (u->cache) {
|
|
130
|
752 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
753 u->buffer.last = u->buffer.pos;
|
|
28
|
754
|
|
|
755 } else {
|
|
130
|
756 u->buffer.pos = u->buffer.start;
|
|
|
757 u->buffer.last = u->buffer.start;
|
|
28
|
758 }
|
|
|
759 #else
|
|
58
|
760
|
|
130
|
761 u->buffer.pos = u->buffer.start;
|
|
|
762 u->buffer.last = u->buffer.start;
|
|
58
|
763
|
|
28
|
764 #endif
|
|
|
765
|
|
58
|
766 return NGX_OK;
|
|
28
|
767 }
|
|
|
768
|
|
|
769
|
|
36
|
770 static void
|
|
|
771 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
772 {
|
|
220
|
773 int rc, err;
|
|
|
774 socklen_t len;
|
|
32
|
775 ngx_connection_t *c;
|
|
126
|
776
|
|
28
|
777 c = u->peer.connection;
|
|
|
778
|
|
|
779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
780 "http upstream send request");
|
|
|
781
|
|
220
|
782 if (!u->request_sent) {
|
|
|
783
|
|
28
|
784 #if (NGX_HAVE_KQUEUE)
|
|
|
785
|
|
220
|
786 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
787 if (c->write->pending_eof) {
|
|
|
788 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
86
|
789 "kevent() reported that connect() failed");
|
|
220
|
790 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
791 return;
|
|
|
792 }
|
|
|
793
|
|
|
794 } else
|
|
|
795 #endif
|
|
|
796 {
|
|
|
797 err = 0;
|
|
|
798 len = sizeof(int);
|
|
|
799
|
|
|
800 /*
|
|
|
801 * BSDs and Linux return 0 and set a pending error in err
|
|
|
802 * Solaris returns -1 and sets errno
|
|
|
803 */
|
|
|
804
|
|
|
805 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
806 == -1)
|
|
|
807 {
|
|
|
808 err = ngx_errno;
|
|
|
809 }
|
|
|
810
|
|
|
811 if (err) {
|
|
|
812 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
813 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
814 return;
|
|
|
815 }
|
|
|
816 }
|
|
28
|
817 }
|
|
|
818
|
|
32
|
819 c->log->action = "sending request to upstream";
|
|
28
|
820
|
|
58
|
821 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
822
|
|
|
823 u->request_sent = 1;
|
|
|
824
|
|
|
825 if (rc == NGX_ERROR) {
|
|
|
826 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
827 return;
|
|
|
828 }
|
|
|
829
|
|
|
830 if (c->write->timer_set) {
|
|
|
831 ngx_del_timer(c->write);
|
|
|
832 }
|
|
|
833
|
|
|
834 if (rc == NGX_AGAIN) {
|
|
|
835 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
836
|
|
|
837 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
838 {
|
|
|
839 ngx_http_upstream_finalize_request(r, u,
|
|
|
840 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
841 return;
|
|
|
842 }
|
|
|
843
|
|
|
844 return;
|
|
|
845 }
|
|
|
846
|
|
|
847 /* rc == NGX_OK */
|
|
|
848
|
|
|
849 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
850 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
851 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
852 ngx_tcp_push_n " failed");
|
|
|
853 ngx_http_upstream_finalize_request(r, u,
|
|
|
854 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
855 return;
|
|
28
|
856 }
|
|
|
857
|
|
|
858 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
859 }
|
|
126
|
860
|
|
28
|
861 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
862
|
|
|
863 #if 1
|
|
|
864 if (c->read->ready) {
|
|
126
|
865
|
|
28
|
866 /* post aio operation */
|
|
|
867
|
|
|
868 /*
|
|
|
869 * TODO comment
|
|
|
870 * although we can post aio operation just in the end
|
|
|
871 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
872 * it's better to do here because we postpone header buffer allocation
|
|
|
873 */
|
|
|
874
|
|
|
875 ngx_http_upstream_process_header(c->read);
|
|
|
876 return;
|
|
|
877 }
|
|
|
878 #endif
|
|
|
879
|
|
58
|
880 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
881
|
|
58
|
882 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
883 ngx_http_upstream_finalize_request(r, u,
|
|
|
884 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
885 return;
|
|
|
886 }
|
|
|
887 }
|
|
|
888
|
|
|
889
|
|
36
|
890 static void
|
|
|
891 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
892 {
|
|
|
893 ngx_connection_t *c;
|
|
|
894 ngx_http_request_t *r;
|
|
|
895 ngx_http_upstream_t *u;
|
|
|
896
|
|
|
897 c = wev->data;
|
|
|
898 r = c->data;
|
|
|
899 u = r->upstream;
|
|
|
900
|
|
|
901 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
902 "http upstream send request handler");
|
|
|
903
|
|
|
904 if (wev->timedout) {
|
|
|
905 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
906 return;
|
|
|
907 }
|
|
|
908
|
|
140
|
909 #if (NGX_HTTP_SSL)
|
|
|
910
|
|
|
911 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
912 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
913 return;
|
|
|
914 }
|
|
|
915
|
|
|
916 #endif
|
|
|
917
|
|
200
|
918 if (u->header_sent) {
|
|
|
919 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
920
|
|
|
921 (void) ngx_handle_write_event(wev, 0);
|
|
|
922
|
|
|
923 return;
|
|
|
924 }
|
|
|
925
|
|
28
|
926 ngx_http_upstream_send_request(r, u);
|
|
|
927 }
|
|
|
928
|
|
|
929
|
|
36
|
930 static void
|
|
|
931 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
932 {
|
|
64
|
933 ssize_t n;
|
|
|
934 ngx_int_t rc;
|
|
122
|
935 ngx_str_t *uri, args;
|
|
198
|
936 ngx_uint_t i, flags;
|
|
64
|
937 ngx_list_part_t *part;
|
|
|
938 ngx_table_elt_t *h;
|
|
|
939 ngx_connection_t *c;
|
|
|
940 ngx_http_request_t *r;
|
|
|
941 ngx_http_upstream_t *u;
|
|
|
942 ngx_http_err_page_t *err_page;
|
|
|
943 ngx_http_core_loc_conf_t *clcf;
|
|
|
944 ngx_http_upstream_header_t *hh;
|
|
|
945 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
946
|
|
|
947 c = rev->data;
|
|
|
948 r = c->data;
|
|
|
949 u = r->upstream;
|
|
|
950
|
|
|
951 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
952 "http upstream process header");
|
|
28
|
953
|
|
32
|
954 c->log->action = "reading response header from upstream";
|
|
28
|
955
|
|
|
956 if (rev->timedout) {
|
|
|
957 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
958 return;
|
|
|
959 }
|
|
126
|
960
|
|
130
|
961 if (u->buffer.start == NULL) {
|
|
|
962 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
963 if (u->buffer.start == NULL) {
|
|
28
|
964 ngx_http_upstream_finalize_request(r, u,
|
|
|
965 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
966 return;
|
|
|
967 }
|
|
|
968
|
|
130
|
969 u->buffer.pos = u->buffer.start;
|
|
|
970 u->buffer.last = u->buffer.start;
|
|
|
971 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
972 u->buffer.temporary = 1;
|
|
|
973
|
|
|
974 u->buffer.tag = u->output.tag;
|
|
28
|
975
|
|
58
|
976 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
977 sizeof(ngx_table_elt_t))
|
|
|
978 != NGX_OK)
|
|
58
|
979 {
|
|
|
980 ngx_http_upstream_finalize_request(r, u,
|
|
|
981 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
982 return;
|
|
|
983 }
|
|
|
984
|
|
28
|
985 #if 0
|
|
|
986 if (u->cache) {
|
|
130
|
987 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
988 u->buffer.last = u->buffer.pos;
|
|
28
|
989 }
|
|
|
990 #endif
|
|
|
991 }
|
|
|
992
|
|
130
|
993 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
994 u->buffer.end - u->buffer.last);
|
|
28
|
995
|
|
|
996 if (n == NGX_AGAIN) {
|
|
|
997 #if 0
|
|
|
998 ngx_add_timer(rev, u->read_timeout);
|
|
|
999 #endif
|
|
|
1000
|
|
|
1001 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1002 ngx_http_upstream_finalize_request(r, u,
|
|
|
1003 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1004 return;
|
|
|
1005 }
|
|
|
1006
|
|
|
1007 return;
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 if (n == 0) {
|
|
|
1011 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1012 "upstream prematurely closed connection");
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 if (n == NGX_ERROR || n == 0) {
|
|
|
1016 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1017 return;
|
|
|
1018 }
|
|
|
1019
|
|
130
|
1020 u->buffer.last += n;
|
|
28
|
1021
|
|
|
1022 #if 0
|
|
|
1023 u->valid_header_in = 0;
|
|
|
1024
|
|
|
1025 u->peer.cached = 0;
|
|
|
1026 #endif
|
|
|
1027
|
|
|
1028 rc = u->process_header(r);
|
|
|
1029
|
|
|
1030 if (rc == NGX_AGAIN) {
|
|
|
1031 #if 0
|
|
|
1032 ngx_add_timer(rev, u->read_timeout);
|
|
|
1033 #endif
|
|
|
1034
|
|
130
|
1035 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1036 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1037 "upstream sent too big header");
|
|
|
1038
|
|
|
1039 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1040 return;
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1044 ngx_http_upstream_finalize_request(r, u,
|
|
|
1045 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1046 return;
|
|
|
1047 }
|
|
|
1048
|
|
|
1049 return;
|
|
|
1050 }
|
|
|
1051
|
|
|
1052 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1053 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1054 return;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1058 ngx_http_upstream_finalize_request(r, u,
|
|
|
1059 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1060 return;
|
|
|
1061 }
|
|
|
1062
|
|
|
1063 /* rc == NGX_OK */
|
|
|
1064
|
|
248
|
1065 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1066 && r->subrequest_in_memory)
|
|
|
1067 {
|
|
|
1068 u->buffer.last = u->buffer.pos;
|
|
|
1069 }
|
|
|
1070
|
|
78
|
1071 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1072
|
|
|
1073 if (u->peer.tries > 1
|
|
|
1074 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1075 {
|
|
|
1076 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1077 return;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 #if (NGX_HTTP_CACHE)
|
|
|
1081
|
|
|
1082 if (u->peer.tries == 0
|
|
|
1083 && u->stale
|
|
|
1084 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1085 {
|
|
|
1086 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1087 ngx_http_send_cached_response(r));
|
|
58
|
1088 return;
|
|
|
1089 }
|
|
|
1090
|
|
|
1091 #endif
|
|
|
1092 }
|
|
|
1093
|
|
146
|
1094 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1095
|
|
|
1096 if (u->peer.tries > 1
|
|
|
1097 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1098 {
|
|
|
1099 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1100 return;
|
|
|
1101 }
|
|
|
1102
|
|
224
|
1103 if (u->conf->intercept_404) {
|
|
|
1104 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1105 return;
|
|
|
1106 }
|
|
58
|
1107 }
|
|
|
1108
|
|
|
1109
|
|
78
|
1110 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1111 && u->conf->intercept_errors)
|
|
36
|
1112 {
|
|
|
1113 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1114
|
|
|
1115 if (clcf->error_pages) {
|
|
|
1116
|
|
|
1117 err_page = clcf->error_pages->elts;
|
|
|
1118 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1119 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1120
|
|
|
1121 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1122
|
|
|
1123 r->headers_out.www_authenticate =
|
|
|
1124 ngx_list_push(&r->headers_out.headers);
|
|
|
1125
|
|
|
1126 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1127 ngx_http_upstream_finalize_request(r, u,
|
|
|
1128 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1129 return;
|
|
|
1130 }
|
|
|
1131
|
|
126
|
1132 *r->headers_out.www_authenticate =
|
|
78
|
1133 *u->headers_in.www_authenticate;
|
|
|
1134 }
|
|
|
1135
|
|
36
|
1136 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1137 u->headers_in.status_n);
|
|
36
|
1138 return;
|
|
|
1139 }
|
|
|
1140 }
|
|
|
1141 }
|
|
|
1142 }
|
|
|
1143
|
|
230
|
1144 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1145
|
|
64
|
1146 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1147
|
|
64
|
1148 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1149
|
|
|
1150 part = &r->upstream->headers_in.headers.part;
|
|
|
1151 h = part->elts;
|
|
|
1152
|
|
|
1153 for (i = 0; /* void */; i++) {
|
|
|
1154
|
|
|
1155 if (i >= part->nelts) {
|
|
|
1156 if (part->next == NULL) {
|
|
|
1157 break;
|
|
|
1158 }
|
|
126
|
1159
|
|
64
|
1160 part = part->next;
|
|
|
1161 h = part->elts;
|
|
|
1162 i = 0;
|
|
|
1163 }
|
|
|
1164
|
|
198
|
1165 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1166 h[i].lowcase_key, h[i].key.len);
|
|
|
1167
|
|
|
1168 if (hh && hh->redirect) {
|
|
|
1169 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
244
|
1170 ngx_http_finalize_request(r,
|
|
|
1171 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1172 return;
|
|
|
1173 }
|
|
|
1174 }
|
|
|
1175 }
|
|
|
1176
|
|
122
|
1177 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1178 args.len = 0;
|
|
|
1179 args.data = NULL;
|
|
|
1180 flags = 0;
|
|
|
1181
|
|
|
1182 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1183 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1184 return;
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1188 r->zero_in_uri = 1;
|
|
|
1189 }
|
|
|
1190
|
|
202
|
1191 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1192 r->method = NGX_HTTP_GET;
|
|
|
1193 }
|
|
|
1194
|
|
122
|
1195 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1196 return;
|
|
|
1197 }
|
|
|
1198
|
|
58
|
1199 part = &r->upstream->headers_in.headers.part;
|
|
|
1200 h = part->elts;
|
|
|
1201
|
|
|
1202 for (i = 0; /* void */; i++) {
|
|
28
|
1203
|
|
58
|
1204 if (i >= part->nelts) {
|
|
|
1205 if (part->next == NULL) {
|
|
|
1206 break;
|
|
|
1207 }
|
|
126
|
1208
|
|
58
|
1209 part = part->next;
|
|
|
1210 h = part->elts;
|
|
|
1211 i = 0;
|
|
|
1212 }
|
|
|
1213
|
|
198
|
1214 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1215 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1216 {
|
|
198
|
1217 continue;
|
|
|
1218 }
|
|
|
1219
|
|
|
1220 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1221 h[i].lowcase_key, h[i].key.len);
|
|
|
1222
|
|
|
1223 if (hh) {
|
|
|
1224 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1225 ngx_http_upstream_finalize_request(r, u,
|
|
|
1226 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1227 return;
|
|
|
1228 }
|
|
|
1229
|
|
|
1230 continue;
|
|
|
1231 }
|
|
|
1232
|
|
|
1233 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1234 ngx_http_upstream_finalize_request(r, u,
|
|
|
1235 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1236 return;
|
|
|
1237 }
|
|
|
1238 }
|
|
|
1239
|
|
198
|
1240 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1241 r->headers_out.server->hash = 0;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1245 r->headers_out.date->hash = 0;
|
|
|
1246 }
|
|
|
1247
|
|
78
|
1248 r->headers_out.status = u->headers_in.status_n;
|
|
|
1249 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1250
|
|
130
|
1251 if (r->headers_out.content_length_n != -1) {
|
|
|
1252 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1253
|
|
|
1254 } else {
|
|
|
1255 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1256 }
|
|
|
1257
|
|
248
|
1258 if (!r->subrequest_in_memory) {
|
|
|
1259 ngx_http_upstream_send_response(r, u);
|
|
|
1260 return;
|
|
|
1261 }
|
|
|
1262
|
|
|
1263 /* subrequest content in memory */
|
|
|
1264
|
|
|
1265 if (u->input_filter == NULL) {
|
|
|
1266 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1267 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1268 u->input_filter_ctx = r;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1272 ngx_http_upstream_finalize_request(r, u,
|
|
|
1273 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1274 return;
|
|
|
1275 }
|
|
|
1276
|
|
|
1277 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1278 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1279 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1280 return;
|
|
|
1281 }
|
|
|
1282
|
|
|
1283 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1284 return;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1288
|
|
|
1289 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1290 }
|
|
|
1291
|
|
|
1292
|
|
|
1293 static void
|
|
|
1294 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1295 {
|
|
|
1296 size_t size;
|
|
|
1297 ssize_t n;
|
|
|
1298 ngx_buf_t *b;
|
|
|
1299 ngx_connection_t *c;
|
|
|
1300 ngx_http_request_t *r;
|
|
|
1301 ngx_http_upstream_t *u;
|
|
|
1302
|
|
|
1303 c = rev->data;
|
|
|
1304 r = c->data;
|
|
|
1305 u = r->upstream;
|
|
|
1306
|
|
|
1307 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1308 "http upstream process body on memory");
|
|
|
1309
|
|
|
1310 if (rev->timedout) {
|
|
|
1311 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1312 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1313 return;
|
|
|
1314 }
|
|
|
1315
|
|
|
1316 b = &u->buffer;
|
|
|
1317
|
|
|
1318 for ( ;; ) {
|
|
|
1319
|
|
|
1320 size = b->end - b->last;
|
|
|
1321
|
|
|
1322 if (size == 0) {
|
|
|
1323 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1324 "upstream buffer is too small to read repsonse");
|
|
|
1325 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1326 return;
|
|
|
1327 }
|
|
|
1328
|
|
|
1329 n = c->recv(c, b->last, size);
|
|
|
1330
|
|
|
1331 if (n == NGX_AGAIN) {
|
|
|
1332 break;
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 if (n == 0 || n == NGX_ERROR) {
|
|
|
1336 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1337 return;
|
|
|
1338 }
|
|
|
1339
|
|
|
1340 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1341 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1342 return;
|
|
|
1343 }
|
|
|
1344
|
|
|
1345 if (!rev->ready) {
|
|
|
1346 break;
|
|
|
1347 }
|
|
|
1348 }
|
|
|
1349
|
|
|
1350 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1351 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1352 return;
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 if (rev->active) {
|
|
|
1356 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1357
|
|
|
1358 } else if (rev->timer_set) {
|
|
|
1359 ngx_del_timer(rev);
|
|
|
1360 }
|
|
230
|
1361 }
|
|
|
1362
|
|
|
1363
|
|
|
1364 static void
|
|
|
1365 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1366 {
|
|
|
1367 int tcp_nodelay;
|
|
|
1368 ssize_t size;
|
|
|
1369 ngx_int_t rc;
|
|
|
1370 ngx_event_pipe_t *p;
|
|
|
1371 ngx_connection_t *c;
|
|
|
1372 ngx_pool_cleanup_t *cl;
|
|
|
1373 ngx_pool_cleanup_file_t *clf;
|
|
|
1374 ngx_http_core_loc_conf_t *clcf;
|
|
|
1375
|
|
58
|
1376 rc = ngx_http_send_header(r);
|
|
28
|
1377
|
|
178
|
1378 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1379 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1380 return;
|
|
|
1381 }
|
|
|
1382
|
|
|
1383 u->header_sent = 1;
|
|
|
1384
|
|
122
|
1385 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1386 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1387 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1388 clf = cl->data;
|
|
|
1389
|
|
|
1390 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1391 cl->handler(clf);
|
|
|
1392 cl->handler = NULL;
|
|
208
|
1393 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1394 break;
|
|
|
1395 }
|
|
|
1396 }
|
|
|
1397 }
|
|
|
1398 }
|
|
|
1399
|
|
132
|
1400 c = r->connection;
|
|
|
1401
|
|
130
|
1402 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1403
|
|
198
|
1404 if (!u->buffering) {
|
|
130
|
1405
|
|
|
1406 if (u->input_filter == NULL) {
|
|
|
1407 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1408 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1409 u->input_filter_ctx = r;
|
|
|
1410 }
|
|
|
1411
|
|
|
1412 u->peer.connection->read->handler =
|
|
|
1413 ngx_http_upstream_process_non_buffered_body;
|
|
|
1414 r->write_event_handler =
|
|
|
1415 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1416
|
|
|
1417 r->limit_rate = 0;
|
|
|
1418
|
|
|
1419 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1420 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1421 return;
|
|
|
1422 }
|
|
|
1423
|
|
132
|
1424 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1425 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1426
|
|
|
1427 tcp_nodelay = 1;
|
|
|
1428
|
|
|
1429 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1430 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1431 {
|
|
|
1432 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1433 "setsockopt(TCP_NODELAY) failed");
|
|
|
1434 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1435 return;
|
|
|
1436 }
|
|
|
1437
|
|
|
1438 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1439 }
|
|
|
1440
|
|
130
|
1441 size = u->buffer.last - u->buffer.pos;
|
|
|
1442
|
|
|
1443 if (size) {
|
|
|
1444 u->buffer.last = u->buffer.pos;
|
|
|
1445
|
|
|
1446 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1447 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1448 return;
|
|
|
1449 }
|
|
|
1450
|
|
132
|
1451 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1452
|
|
|
1453 } else {
|
|
|
1454 u->buffer.pos = u->buffer.start;
|
|
|
1455 u->buffer.last = u->buffer.start;
|
|
|
1456
|
|
|
1457 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1458 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1459 return;
|
|
|
1460 }
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 return;
|
|
|
1464 }
|
|
|
1465
|
|
28
|
1466 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1467
|
|
|
1468 #if 0
|
|
|
1469
|
|
|
1470 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1471 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1472 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1473 ngx_close_file_n " \"%s\" failed",
|
|
|
1474 u->cache->ctx.file.name.data);
|
|
|
1475 }
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 if (u->cachable) {
|
|
130
|
1479 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1480
|
|
|
1481 header->expires = u->cache->ctx.expires;
|
|
|
1482 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1483 header->date = u->cache->ctx.date;
|
|
|
1484 header->length = r->headers_out.content_length_n;
|
|
|
1485 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1486
|
|
|
1487 header->key_len = u->cache->ctx.key0.len;
|
|
|
1488 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1489 header->key[header->key_len] = LF;
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 #endif
|
|
|
1493
|
|
130
|
1494 p = u->pipe;
|
|
28
|
1495
|
|
|
1496 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1497 p->output_ctx = r;
|
|
|
1498 p->tag = u->output.tag;
|
|
126
|
1499 p->bufs = u->conf->bufs;
|
|
28
|
1500 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1501 p->upstream = u->peer.connection;
|
|
132
|
1502 p->downstream = c;
|
|
28
|
1503 p->pool = r->pool;
|
|
132
|
1504 p->log = c->log;
|
|
126
|
1505
|
|
28
|
1506 p->cachable = u->cachable;
|
|
|
1507
|
|
50
|
1508 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1509 if (p->temp_file == NULL) {
|
|
28
|
1510 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1511 return;
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1515 p->temp_file->file.log = c->log;
|
|
28
|
1516 p->temp_file->path = u->conf->temp_path;
|
|
|
1517 p->temp_file->pool = r->pool;
|
|
126
|
1518
|
|
28
|
1519 if (u->cachable) {
|
|
|
1520 p->temp_file->persistent = 1;
|
|
|
1521 } else {
|
|
216
|
1522 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1523 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1524 "to a temporary file";
|
|
|
1525 }
|
|
|
1526
|
|
|
1527 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1528 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1529
|
|
50
|
1530 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1531 if (p->preread_bufs == NULL) {
|
|
28
|
1532 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1533 return;
|
|
|
1534 }
|
|
130
|
1535 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1536 p->preread_bufs->next = NULL;
|
|
130
|
1537 u->buffer.recycled = 1;
|
|
|
1538
|
|
|
1539 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1540
|
|
|
1541 if (u->cachable) {
|
|
|
1542 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1543 if (p->buf_to_file == NULL) {
|
|
|
1544 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1545 return;
|
|
|
1546 }
|
|
130
|
1547 p->buf_to_file->pos = u->buffer.start;
|
|
|
1548 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1549 p->buf_to_file->temporary = 1;
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1553 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1554 p->single_buf = 1;
|
|
|
1555 }
|
|
|
1556
|
|
|
1557 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1558 p->free_bufs = 1;
|
|
|
1559
|
|
|
1560 /*
|
|
130
|
1561 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1562 * as though these bytes were read
|
|
|
1563 */
|
|
130
|
1564 u->buffer.last = u->buffer.pos;
|
|
28
|
1565
|
|
|
1566 if (u->conf->cyclic_temp_file) {
|
|
|
1567
|
|
|
1568 /*
|
|
|
1569 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1570 * because the writing a new data may interfere with sendfile()
|
|
|
1571 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1572 */
|
|
|
1573
|
|
|
1574 p->cyclic_temp_file = 1;
|
|
132
|
1575 c->sendfile = 0;
|
|
28
|
1576
|
|
|
1577 } else {
|
|
|
1578 p->cyclic_temp_file = 0;
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 p->read_timeout = u->conf->read_timeout;
|
|
|
1582 p->send_timeout = clcf->send_timeout;
|
|
|
1583 p->send_lowat = clcf->send_lowat;
|
|
|
1584
|
|
58
|
1585 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1586 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1587
|
|
|
1588 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1589 }
|
|
|
1590
|
|
|
1591
|
|
36
|
1592 static void
|
|
130
|
1593 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1594 {
|
|
|
1595 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1596 }
|
|
|
1597
|
|
|
1598
|
|
|
1599 static void
|
|
|
1600 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1601 {
|
|
|
1602 size_t size;
|
|
|
1603 ssize_t n;
|
|
|
1604 ngx_buf_t *b;
|
|
132
|
1605 ngx_int_t rc;
|
|
130
|
1606 ngx_uint_t do_write;
|
|
132
|
1607 ngx_connection_t *c, *client;
|
|
130
|
1608 ngx_http_request_t *r;
|
|
|
1609 ngx_http_upstream_t *u;
|
|
|
1610 ngx_http_core_loc_conf_t *clcf;
|
|
|
1611
|
|
|
1612 c = ev->data;
|
|
244
|
1613 r = c->data;
|
|
|
1614 u = r->upstream;
|
|
130
|
1615
|
|
|
1616 if (ev->write) {
|
|
|
1617 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1618 "http upstream process non buffered downstream");
|
|
|
1619 c->log->action = "sending to client";
|
|
|
1620
|
|
|
1621 } else {
|
|
|
1622 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1623 "http upstream process non buffered upstream");
|
|
|
1624 c->log->action = "reading upstream";
|
|
|
1625 }
|
|
|
1626
|
|
|
1627 if (ev->timedout) {
|
|
|
1628 if (ev->write) {
|
|
|
1629 c->timedout = 1;
|
|
160
|
1630 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1631
|
|
130
|
1632 } else {
|
|
160
|
1633 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1634 }
|
|
244
|
1635
|
|
|
1636 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1637 return;
|
|
130
|
1638 }
|
|
|
1639
|
|
132
|
1640 client = r->connection;
|
|
130
|
1641
|
|
|
1642 b = &u->buffer;
|
|
|
1643
|
|
|
1644 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1645
|
|
206
|
1646 do_write = ev->write || u->length == 0;
|
|
130
|
1647
|
|
|
1648 for ( ;; ) {
|
|
|
1649
|
|
|
1650 if (do_write) {
|
|
|
1651
|
|
|
1652 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1653 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1654
|
|
|
1655 if (client->destroyed) {
|
|
|
1656 return;
|
|
|
1657 }
|
|
|
1658
|
|
|
1659 if (rc == NGX_ERROR) {
|
|
130
|
1660 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1661 return;
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1665 &u->out_bufs, u->output.tag);
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 if (u->busy_bufs == NULL) {
|
|
|
1669
|
|
|
1670 if (u->length == 0
|
|
|
1671 || u->peer.connection->read->eof
|
|
|
1672 || u->peer.connection->read->error)
|
|
|
1673 {
|
|
|
1674 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1675 return;
|
|
|
1676 }
|
|
|
1677
|
|
|
1678 b->pos = b->start;
|
|
|
1679 b->last = b->start;
|
|
|
1680 }
|
|
|
1681 }
|
|
|
1682
|
|
|
1683 size = b->end - b->last;
|
|
|
1684
|
|
|
1685 if (size > u->length) {
|
|
|
1686 size = u->length;
|
|
|
1687 }
|
|
|
1688
|
|
|
1689 if (size && u->peer.connection->read->ready) {
|
|
206
|
1690
|
|
130
|
1691 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1692
|
|
|
1693 if (n == NGX_AGAIN) {
|
|
|
1694 break;
|
|
|
1695 }
|
|
|
1696
|
|
|
1697 if (n > 0) {
|
|
|
1698 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1699 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1700 return;
|
|
|
1701 }
|
|
|
1702 }
|
|
|
1703
|
|
|
1704 do_write = 1;
|
|
|
1705
|
|
|
1706 continue;
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 break;
|
|
|
1710 }
|
|
|
1711
|
|
132
|
1712 if (client->data == r) {
|
|
|
1713 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1714 == NGX_ERROR)
|
|
|
1715 {
|
|
|
1716 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1717 return;
|
|
|
1718 }
|
|
130
|
1719 }
|
|
|
1720
|
|
132
|
1721 if (client->write->active) {
|
|
|
1722 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1723
|
|
|
1724 } else if (client->write->timer_set) {
|
|
|
1725 ngx_del_timer(client->write);
|
|
130
|
1726 }
|
|
|
1727
|
|
|
1728 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1729 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1730 return;
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 if (u->peer.connection->read->active) {
|
|
|
1734 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1735
|
|
132
|
1736 } else if (u->peer.connection->read->timer_set) {
|
|
|
1737 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1738 }
|
|
|
1739 }
|
|
|
1740
|
|
|
1741
|
|
|
1742 static ngx_int_t
|
|
|
1743 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1744 {
|
|
|
1745 return NGX_OK;
|
|
|
1746 }
|
|
|
1747
|
|
|
1748
|
|
|
1749 static ngx_int_t
|
|
|
1750 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1751 {
|
|
|
1752 ngx_http_request_t *r = data;
|
|
|
1753
|
|
|
1754 ngx_buf_t *b;
|
|
|
1755 ngx_chain_t *cl, **ll;
|
|
|
1756 ngx_http_upstream_t *u;
|
|
|
1757
|
|
|
1758 u = r->upstream;
|
|
|
1759
|
|
|
1760 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1761 ll = &cl->next;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1765 if (cl == NULL) {
|
|
|
1766 return NGX_ERROR;
|
|
|
1767 }
|
|
|
1768
|
|
|
1769 *ll = cl;
|
|
|
1770
|
|
|
1771 cl->buf->flush = 1;
|
|
|
1772 cl->buf->memory = 1;
|
|
|
1773
|
|
|
1774 b = &u->buffer;
|
|
|
1775
|
|
|
1776 cl->buf->pos = b->last;
|
|
|
1777 b->last += bytes;
|
|
|
1778 cl->buf->last = b->last;
|
|
|
1779
|
|
|
1780 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1781 return NGX_OK;
|
|
|
1782 }
|
|
|
1783
|
|
|
1784 u->length -= bytes;
|
|
|
1785
|
|
|
1786 return NGX_OK;
|
|
|
1787 }
|
|
|
1788
|
|
|
1789
|
|
|
1790 static void
|
|
58
|
1791 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1792 {
|
|
|
1793 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1794 }
|
|
|
1795
|
|
|
1796
|
|
|
1797 static void
|
|
36
|
1798 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1799 {
|
|
58
|
1800 ngx_event_pipe_t *p;
|
|
132
|
1801 ngx_connection_t *c, *downstream;
|
|
28
|
1802 ngx_http_request_t *r;
|
|
|
1803 ngx_http_upstream_t *u;
|
|
|
1804
|
|
|
1805 c = ev->data;
|
|
|
1806 r = c->data;
|
|
|
1807 u = r->upstream;
|
|
132
|
1808 downstream = r->connection;
|
|
28
|
1809
|
|
|
1810 if (ev->write) {
|
|
32
|
1811 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1812 "http upstream process downstream");
|
|
|
1813 c->log->action = "sending to client";
|
|
126
|
1814
|
|
28
|
1815 } else {
|
|
32
|
1816 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1817 "http upstream process upstream");
|
|
|
1818 c->log->action = "reading upstream";
|
|
28
|
1819 }
|
|
126
|
1820
|
|
130
|
1821 p = u->pipe;
|
|
28
|
1822
|
|
|
1823 if (ev->timedout) {
|
|
|
1824 if (ev->write) {
|
|
76
|
1825 if (ev->delayed) {
|
|
|
1826
|
|
|
1827 ev->timedout = 0;
|
|
|
1828 ev->delayed = 0;
|
|
|
1829
|
|
|
1830 if (!ev->ready) {
|
|
|
1831 ngx_add_timer(ev, p->send_timeout);
|
|
|
1832
|
|
|
1833 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1834 {
|
|
|
1835 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1836 return;
|
|
|
1837 }
|
|
|
1838
|
|
|
1839 return;
|
|
|
1840 }
|
|
|
1841
|
|
|
1842 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1843
|
|
|
1844 if (downstream->destroyed) {
|
|
|
1845 return;
|
|
|
1846 }
|
|
|
1847
|
|
76
|
1848 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1849 return;
|
|
|
1850 }
|
|
|
1851
|
|
|
1852 } else {
|
|
|
1853 p->downstream_error = 1;
|
|
126
|
1854 c->timedout = 1;
|
|
160
|
1855 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1856 }
|
|
28
|
1857
|
|
|
1858 } else {
|
|
126
|
1859 p->upstream_error = 1;
|
|
160
|
1860 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1861 }
|
|
|
1862
|
|
|
1863 } else {
|
|
76
|
1864 if (ev->write && ev->delayed) {
|
|
|
1865 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1866 "http downstream delayed");
|
|
|
1867
|
|
|
1868 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1869 return;
|
|
|
1870 }
|
|
|
1871
|
|
|
1872 return;
|
|
|
1873 }
|
|
|
1874
|
|
28
|
1875 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1876
|
|
|
1877 if (downstream->destroyed) {
|
|
|
1878 return;
|
|
|
1879 }
|
|
|
1880
|
|
28
|
1881 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1882 return;
|
|
|
1883 }
|
|
|
1884 }
|
|
126
|
1885
|
|
28
|
1886 if (u->peer.connection) {
|
|
|
1887
|
|
|
1888 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1889
|
|
|
1890 if (p->upstream_done && u->cachable) {
|
|
|
1891 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1892 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1893 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1894 return;
|
|
|
1895 }
|
|
|
1896
|
|
|
1897 } else if (p->upstream_eof && u->cachable) {
|
|
|
1898
|
|
|
1899 /* TODO: check length & update cache */
|
|
|
1900
|
|
|
1901 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1902 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1903 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1904 return;
|
|
|
1905 }
|
|
|
1906 }
|
|
|
1907
|
|
|
1908 #endif
|
|
|
1909
|
|
|
1910 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1911 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1912 "http upstream exit: %p", p->out);
|
|
28
|
1913 #if 0
|
|
|
1914 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1915 #endif
|
|
|
1916 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1917 return;
|
|
|
1918 }
|
|
|
1919 }
|
|
|
1920
|
|
|
1921 if (p->downstream_error) {
|
|
32
|
1922 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1923 "http upstream downstream error");
|
|
28
|
1924
|
|
|
1925 if (!u->cachable && u->peer.connection) {
|
|
|
1926 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1927 }
|
|
|
1928 }
|
|
|
1929 }
|
|
|
1930
|
|
|
1931
|
|
36
|
1932 static void
|
|
|
1933 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1934 {
|
|
|
1935 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1936 "http upstream dummy handler");
|
|
|
1937 }
|
|
|
1938
|
|
|
1939
|
|
36
|
1940 static void
|
|
|
1941 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1942 ngx_uint_t ft_type)
|
|
28
|
1943 {
|
|
74
|
1944 ngx_uint_t status, down;
|
|
28
|
1945
|
|
|
1946 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1947 "http next upstream, %xD", ft_type);
|
|
|
1948
|
|
|
1949 #if 0
|
|
|
1950 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1951 #endif
|
|
|
1952
|
|
74
|
1953 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1954 down = 0;
|
|
|
1955 } else {
|
|
|
1956 down = 1;
|
|
28
|
1957 }
|
|
74
|
1958
|
|
|
1959 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1960
|
|
28
|
1961 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1962 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1963 "upstream timed out");
|
|
|
1964 }
|
|
126
|
1965
|
|
28
|
1966 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1967 status = 0;
|
|
|
1968
|
|
|
1969 } else {
|
|
|
1970 switch(ft_type) {
|
|
|
1971
|
|
|
1972 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1973 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1974 break;
|
|
|
1975
|
|
|
1976 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1977 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1978 break;
|
|
|
1979
|
|
|
1980 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1981 status = NGX_HTTP_NOT_FOUND;
|
|
|
1982 break;
|
|
|
1983
|
|
|
1984 /*
|
|
|
1985 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1986 * never reach here
|
|
|
1987 */
|
|
|
1988
|
|
|
1989 default:
|
|
|
1990 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1991 }
|
|
|
1992 }
|
|
|
1993
|
|
132
|
1994 if (r->connection->error) {
|
|
28
|
1995 ngx_http_upstream_finalize_request(r, u,
|
|
|
1996 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1997 return;
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 if (status) {
|
|
|
2001 u->state->status = status;
|
|
|
2002
|
|
74
|
2003 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2004
|
|
|
2005 #if (NGX_HTTP_CACHE)
|
|
|
2006
|
|
|
2007 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2008 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2009 ngx_http_send_cached_response(r));
|
|
28
|
2010 return;
|
|
|
2011 }
|
|
|
2012
|
|
|
2013 #endif
|
|
|
2014
|
|
|
2015 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2016 return;
|
|
|
2017 }
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 if (u->peer.connection) {
|
|
|
2021 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2022 "close http upstream connection: %d",
|
|
|
2023 u->peer.connection->fd);
|
|
126
|
2024 #if (NGX_HTTP_SSL)
|
|
|
2025 if (u->peer.connection->ssl) {
|
|
|
2026 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
2027 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
2028 }
|
|
|
2029 #endif
|
|
28
|
2030 ngx_close_connection(u->peer.connection);
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 #if 0
|
|
|
2034 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2035 ngx_http_upstream_busy_lock(p);
|
|
|
2036 return;
|
|
|
2037 }
|
|
|
2038 #endif
|
|
|
2039
|
|
|
2040 ngx_http_upstream_connect(r, u);
|
|
|
2041 }
|
|
|
2042
|
|
|
2043
|
|
36
|
2044 static void
|
|
118
|
2045 ngx_http_upstream_cleanup(void *data)
|
|
|
2046 {
|
|
|
2047 ngx_http_request_t *r = data;
|
|
|
2048
|
|
|
2049 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2050 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2051
|
|
|
2052 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2053 }
|
|
|
2054
|
|
|
2055
|
|
|
2056 static void
|
|
36
|
2057 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2058 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2059 {
|
|
112
|
2060 ngx_time_t *tp;
|
|
|
2061
|
|
32
|
2062 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2063 "finalize http upstream request: %i", rc);
|
|
28
|
2064
|
|
118
|
2065 *u->cleanup = NULL;
|
|
|
2066
|
|
112
|
2067 if (u->state->response_time) {
|
|
|
2068 tp = ngx_timeofday();
|
|
|
2069 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
2070 - u->state->response_time;
|
|
|
2071 }
|
|
|
2072
|
|
28
|
2073 u->finalize_request(r, rc);
|
|
|
2074
|
|
|
2075 if (u->peer.connection) {
|
|
|
2076 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2077 "close http upstream connection: %d",
|
|
|
2078 u->peer.connection->fd);
|
|
126
|
2079 #if (NGX_HTTP_SSL)
|
|
|
2080
|
|
|
2081 /* TODO: do not shutdown persistent connection */
|
|
|
2082
|
|
|
2083 if (u->peer.connection->ssl) {
|
|
|
2084 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
2085 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
2086 }
|
|
|
2087 #endif
|
|
28
|
2088 ngx_close_connection(u->peer.connection);
|
|
|
2089 }
|
|
|
2090
|
|
32
|
2091 u->peer.connection = NULL;
|
|
|
2092
|
|
112
|
2093 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2094 {
|
|
|
2095 rc = 0;
|
|
|
2096 }
|
|
|
2097
|
|
130
|
2098 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2099 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2100 "http upstream temp fd: %d",
|
|
130
|
2101 u->pipe->temp_file->file.fd);
|
|
28
|
2102 }
|
|
|
2103
|
|
|
2104 #if 0
|
|
|
2105 if (u->cache) {
|
|
|
2106 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2107 "http upstream cache fd: %d",
|
|
28
|
2108 u->cache->ctx.file.fd);
|
|
|
2109 }
|
|
|
2110 #endif
|
|
|
2111
|
|
64
|
2112 if (rc == NGX_DECLINED) {
|
|
|
2113 return;
|
|
|
2114 }
|
|
|
2115
|
|
32
|
2116 r->connection->log->action = "sending to client";
|
|
|
2117
|
|
178
|
2118 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2119 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2120 }
|
|
|
2121
|
|
|
2122 ngx_http_finalize_request(r, rc);
|
|
|
2123 }
|
|
|
2124
|
|
|
2125
|
|
126
|
2126 #if (NGX_HTTP_SSL)
|
|
|
2127
|
|
|
2128 static void
|
|
|
2129 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
2130 {
|
|
|
2131 /* lock peer mutex */
|
|
|
2132
|
|
|
2133 if (peer->ssl_session) {
|
|
|
2134 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2135 }
|
|
|
2136
|
|
|
2137 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2138
|
|
|
2139 /* unlock peer mutex */
|
|
|
2140
|
|
|
2141 /*
|
|
|
2142 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2143 * and do not wait its "close notify" shutdown alert.
|
|
|
2144 * It is acceptable according to the TLS standard.
|
|
|
2145 */
|
|
|
2146
|
|
|
2147 c->ssl->no_wait_shutdown = 1;
|
|
|
2148
|
|
|
2149 (void) ngx_ssl_shutdown(c);
|
|
|
2150 }
|
|
|
2151
|
|
|
2152 #endif
|
|
|
2153
|
|
|
2154
|
|
58
|
2155 static ngx_int_t
|
|
|
2156 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2157 ngx_uint_t offset)
|
|
126
|
2158 {
|
|
58
|
2159 ngx_table_elt_t **ph;
|
|
126
|
2160
|
|
58
|
2161 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2162
|
|
|
2163 if (*ph == NULL) {
|
|
|
2164 *ph = h;
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 return NGX_OK;
|
|
|
2168 }
|
|
|
2169
|
|
|
2170
|
|
|
2171 static ngx_int_t
|
|
|
2172 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2173 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2174 {
|
|
|
2175 ngx_array_t *pa;
|
|
|
2176 ngx_table_elt_t **ph;
|
|
|
2177
|
|
|
2178 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2179
|
|
|
2180 if (pa->elts == NULL) {
|
|
|
2181 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2182 {
|
|
|
2183 return NGX_ERROR;
|
|
|
2184 }
|
|
|
2185 }
|
|
|
2186
|
|
|
2187 ph = ngx_array_push(pa);
|
|
|
2188 if (ph == NULL) {
|
|
|
2189 return NGX_ERROR;
|
|
|
2190 }
|
|
|
2191
|
|
|
2192 *ph = h;
|
|
|
2193
|
|
|
2194 return NGX_OK;
|
|
|
2195 }
|
|
|
2196
|
|
|
2197
|
|
|
2198 static ngx_int_t
|
|
|
2199 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2200 ngx_uint_t offset)
|
|
|
2201 {
|
|
|
2202 return NGX_OK;
|
|
|
2203 }
|
|
|
2204
|
|
|
2205
|
|
|
2206 static ngx_int_t
|
|
76
|
2207 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2208 ngx_uint_t offset)
|
|
126
|
2209 {
|
|
76
|
2210 ngx_int_t n;
|
|
|
2211
|
|
|
2212 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2213
|
|
|
2214 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2215
|
|
|
2216 if (n != NGX_ERROR) {
|
|
|
2217 r->limit_rate = (size_t) n;
|
|
|
2218 }
|
|
|
2219
|
|
|
2220 return NGX_OK;
|
|
|
2221 }
|
|
|
2222
|
|
|
2223
|
|
|
2224 static ngx_int_t
|
|
198
|
2225 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2226 ngx_uint_t offset)
|
|
|
2227 {
|
|
|
2228 u_char c0, c1, c2;
|
|
|
2229
|
|
|
2230 if (r->upstream->conf->change_buffering) {
|
|
|
2231
|
|
|
2232 if (h->value.len == 2) {
|
|
|
2233 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2234 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2235
|
|
|
2236 if (c0 == 'n' && c1 == 'o') {
|
|
|
2237 r->upstream->buffering = 0;
|
|
|
2238 }
|
|
|
2239
|
|
|
2240 } else if (h->value.len == 3) {
|
|
|
2241 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2242 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2243 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2244
|
|
|
2245 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2246 r->upstream->buffering = 1;
|
|
|
2247 }
|
|
|
2248 }
|
|
|
2249 }
|
|
|
2250
|
|
|
2251 return NGX_OK;
|
|
|
2252 }
|
|
|
2253
|
|
|
2254
|
|
|
2255 static ngx_int_t
|
|
206
|
2256 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2257 ngx_uint_t offset)
|
|
|
2258 {
|
|
|
2259 r->headers_out.override_charset = &h->value;
|
|
|
2260
|
|
|
2261 return NGX_OK;
|
|
|
2262 }
|
|
|
2263
|
|
|
2264
|
|
|
2265 static ngx_int_t
|
|
58
|
2266 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2267 ngx_uint_t offset)
|
|
|
2268 {
|
|
122
|
2269 ngx_table_elt_t *ho, **ph;
|
|
58
|
2270
|
|
|
2271 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2272 if (ho == NULL) {
|
|
|
2273 return NGX_ERROR;
|
|
|
2274 }
|
|
|
2275
|
|
|
2276 *ho = *h;
|
|
|
2277
|
|
122
|
2278 if (offset) {
|
|
|
2279 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2280 *ph = ho;
|
|
|
2281 }
|
|
|
2282
|
|
58
|
2283 return NGX_OK;
|
|
|
2284 }
|
|
|
2285
|
|
|
2286
|
|
|
2287 static ngx_int_t
|
|
|
2288 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2289 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2290 {
|
|
|
2291 ngx_array_t *pa;
|
|
|
2292 ngx_table_elt_t *ho, **ph;
|
|
|
2293
|
|
|
2294 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2295
|
|
|
2296 if (pa->elts == NULL) {
|
|
|
2297 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2298 {
|
|
|
2299 return NGX_ERROR;
|
|
|
2300 }
|
|
|
2301 }
|
|
|
2302
|
|
|
2303 ph = ngx_array_push(pa);
|
|
|
2304 if (ph == NULL) {
|
|
|
2305 return NGX_ERROR;
|
|
|
2306 }
|
|
|
2307
|
|
|
2308 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2309 if (ho == NULL) {
|
|
|
2310 return NGX_ERROR;
|
|
|
2311 }
|
|
|
2312
|
|
|
2313 *ho = *h;
|
|
|
2314 *ph = ho;
|
|
|
2315
|
|
|
2316 return NGX_OK;
|
|
|
2317 }
|
|
|
2318
|
|
|
2319
|
|
|
2320 static ngx_int_t
|
|
|
2321 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2322 ngx_uint_t offset)
|
|
|
2323 {
|
|
206
|
2324 u_char *p, *last;
|
|
|
2325
|
|
|
2326 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2327 r->headers_out.content_type = h->value;
|
|
|
2328
|
|
206
|
2329 for (p = h->value.data; *p; p++) {
|
|
|
2330
|
|
|
2331 if (*p != ';') {
|
|
|
2332 continue;
|
|
|
2333 }
|
|
|
2334
|
|
|
2335 last = p;
|
|
|
2336
|
|
|
2337 while (*++p == ' ') { /* void */ }
|
|
|
2338
|
|
|
2339 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
|
2340 continue;
|
|
|
2341 }
|
|
|
2342
|
|
|
2343 p += 8;
|
|
|
2344
|
|
|
2345 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2346
|
|
|
2347 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2348 r->headers_out.charset.data = p;
|
|
|
2349 }
|
|
|
2350
|
|
58
|
2351 return NGX_OK;
|
|
|
2352 }
|
|
|
2353
|
|
|
2354
|
|
|
2355 static ngx_int_t
|
|
|
2356 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2357 ngx_uint_t offset)
|
|
|
2358 {
|
|
|
2359 ngx_table_elt_t *ho;
|
|
|
2360
|
|
|
2361 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2362 if (ho == NULL) {
|
|
|
2363 return NGX_ERROR;
|
|
|
2364 }
|
|
|
2365
|
|
|
2366 *ho = *h;
|
|
|
2367
|
|
|
2368 r->headers_out.content_length = ho;
|
|
|
2369 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2370
|
|
|
2371 return NGX_OK;
|
|
|
2372 }
|
|
|
2373
|
|
|
2374
|
|
|
2375 static ngx_int_t
|
|
|
2376 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2377 ngx_uint_t offset)
|
|
|
2378 {
|
|
|
2379 ngx_int_t rc;
|
|
|
2380 ngx_table_elt_t *ho;
|
|
|
2381
|
|
|
2382 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2383 if (ho == NULL) {
|
|
|
2384 return NGX_ERROR;
|
|
|
2385 }
|
|
|
2386
|
|
|
2387 *ho = *h;
|
|
|
2388
|
|
|
2389 if (r->upstream->rewrite_redirect) {
|
|
|
2390 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2391
|
|
78
|
2392 if (rc == NGX_DECLINED) {
|
|
|
2393 return NGX_OK;
|
|
|
2394 }
|
|
|
2395
|
|
58
|
2396 if (rc == NGX_OK) {
|
|
|
2397 r->headers_out.location = ho;
|
|
|
2398
|
|
|
2399 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2400 "rewritten location: \"%V\"", &ho->value);
|
|
|
2401 }
|
|
|
2402
|
|
|
2403 return rc;
|
|
|
2404 }
|
|
|
2405
|
|
|
2406 /*
|
|
|
2407 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2408 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2409 */
|
|
|
2410
|
|
|
2411 return NGX_OK;
|
|
|
2412 }
|
|
|
2413
|
|
|
2414
|
|
|
2415 static ngx_int_t
|
|
|
2416 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2417 ngx_uint_t offset)
|
|
|
2418 {
|
|
|
2419 u_char *p;
|
|
|
2420 ngx_int_t rc;
|
|
|
2421 ngx_table_elt_t *ho;
|
|
|
2422
|
|
|
2423 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2424 if (ho == NULL) {
|
|
|
2425 return NGX_ERROR;
|
|
|
2426 }
|
|
|
2427
|
|
|
2428 *ho = *h;
|
|
|
2429
|
|
|
2430 if (r->upstream->rewrite_redirect) {
|
|
|
2431
|
|
|
2432 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2433
|
|
|
2434 if (p) {
|
|
|
2435 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2436
|
|
|
2437 } else {
|
|
|
2438 return NGX_OK;
|
|
|
2439 }
|
|
|
2440
|
|
78
|
2441 if (rc == NGX_DECLINED) {
|
|
|
2442 return NGX_OK;
|
|
|
2443 }
|
|
|
2444
|
|
58
|
2445 #if (NGX_DEBUG)
|
|
|
2446 if (rc == NGX_OK) {
|
|
|
2447 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2448 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2449 }
|
|
|
2450 #endif
|
|
|
2451
|
|
|
2452 return rc;
|
|
|
2453 }
|
|
|
2454
|
|
|
2455 return NGX_OK;
|
|
|
2456 }
|
|
|
2457
|
|
|
2458
|
|
|
2459 #if (NGX_HTTP_GZIP)
|
|
|
2460
|
|
|
2461 static ngx_int_t
|
|
|
2462 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2463 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2464 {
|
|
|
2465 ngx_table_elt_t *ho;
|
|
|
2466
|
|
|
2467 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2468 if (ho == NULL) {
|
|
|
2469 return NGX_ERROR;
|
|
|
2470 }
|
|
|
2471
|
|
|
2472 *ho = *h;
|
|
|
2473
|
|
|
2474 r->headers_out.content_encoding = ho;
|
|
|
2475
|
|
|
2476 return NGX_OK;
|
|
|
2477 }
|
|
|
2478
|
|
|
2479 #endif
|
|
|
2480
|
|
|
2481
|
|
36
|
2482 static size_t
|
|
|
2483 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2484 {
|
|
|
2485 if (r->upstream) {
|
|
|
2486 return r->upstream->states.nelts * (3 + 2);
|
|
|
2487 }
|
|
|
2488
|
|
|
2489 return 1;
|
|
|
2490 }
|
|
|
2491
|
|
|
2492
|
|
36
|
2493 static u_char *
|
|
|
2494 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2495 ngx_http_log_op_t *op)
|
|
28
|
2496 {
|
|
|
2497 ngx_uint_t i;
|
|
|
2498 ngx_http_upstream_t *u;
|
|
|
2499 ngx_http_upstream_state_t *state;
|
|
|
2500
|
|
|
2501 u = r->upstream;
|
|
|
2502
|
|
122
|
2503 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2504 *buf = '-';
|
|
|
2505 return buf + 1;
|
|
|
2506 }
|
|
|
2507
|
|
|
2508 i = 0;
|
|
|
2509 state = u->states.elts;
|
|
|
2510
|
|
|
2511 for ( ;; ) {
|
|
|
2512 if (state[i].status == 0) {
|
|
|
2513 *buf++ = '-';
|
|
|
2514
|
|
|
2515 } else {
|
|
|
2516 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 if (++i == u->states.nelts) {
|
|
|
2520 return buf;
|
|
|
2521 }
|
|
|
2522
|
|
|
2523 *buf++ = ',';
|
|
|
2524 *buf++ = ' ';
|
|
|
2525 }
|
|
|
2526 }
|
|
|
2527
|
|
|
2528
|
|
122
|
2529 static size_t
|
|
|
2530 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2531 uintptr_t data)
|
|
|
2532 {
|
|
|
2533 if (r->upstream) {
|
|
|
2534 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2535 }
|
|
|
2536
|
|
|
2537 return 1;
|
|
|
2538 }
|
|
|
2539
|
|
|
2540
|
|
58
|
2541 static u_char *
|
|
112
|
2542 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2543 ngx_http_log_op_t *op)
|
|
|
2544 {
|
|
|
2545 ngx_uint_t i;
|
|
|
2546 ngx_http_upstream_t *u;
|
|
|
2547 ngx_http_upstream_state_t *state;
|
|
|
2548
|
|
|
2549 u = r->upstream;
|
|
|
2550
|
|
122
|
2551 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2552 *buf = '-';
|
|
|
2553 return buf + 1;
|
|
|
2554 }
|
|
|
2555
|
|
|
2556 i = 0;
|
|
|
2557 state = u->states.elts;
|
|
|
2558
|
|
|
2559 for ( ;; ) {
|
|
|
2560 if (state[i].status == 0) {
|
|
|
2561 *buf++ = '-';
|
|
|
2562
|
|
|
2563 } else {
|
|
|
2564 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2565 state[i].response_time / 1000,
|
|
|
2566 state[i].response_time % 1000);
|
|
|
2567 }
|
|
|
2568
|
|
|
2569 if (++i == u->states.nelts) {
|
|
|
2570 return buf;
|
|
|
2571 }
|
|
|
2572
|
|
|
2573 *buf++ = ',';
|
|
|
2574 *buf++ = ' ';
|
|
|
2575 }
|
|
|
2576 }
|
|
|
2577
|
|
|
2578
|
|
36
|
2579 static ngx_int_t
|
|
122
|
2580 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2581 {
|
|
122
|
2582 ngx_http_variable_t *var, *v;
|
|
28
|
2583 ngx_http_log_op_name_t *op;
|
|
|
2584
|
|
122
|
2585 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2586 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2587 if (var == NULL) {
|
|
|
2588 return NGX_ERROR;
|
|
|
2589 }
|
|
|
2590
|
|
186
|
2591 var->get_handler = v->get_handler;
|
|
122
|
2592 var->data = v->data;
|
|
|
2593 }
|
|
|
2594
|
|
28
|
2595 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2596 op->run = NULL;
|
|
|
2597
|
|
|
2598 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2599 if (op->name.len == 0) {
|
|
|
2600 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2601 }
|
|
|
2602 }
|
|
|
2603
|
|
|
2604 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2605
|
|
|
2606 return NGX_OK;
|
|
|
2607 }
|
|
58
|
2608
|
|
|
2609
|
|
122
|
2610 static ngx_int_t
|
|
|
2611 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2612 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2613 {
|
|
|
2614 u_char *p;
|
|
|
2615 size_t len;
|
|
|
2616 ngx_uint_t i;
|
|
|
2617 ngx_http_upstream_t *u;
|
|
|
2618 ngx_http_upstream_state_t *state;
|
|
|
2619
|
|
|
2620 v->valid = 1;
|
|
|
2621 v->no_cachable = 0;
|
|
|
2622 v->not_found = 0;
|
|
|
2623
|
|
|
2624 u = r->upstream;
|
|
|
2625
|
|
|
2626 if (u == NULL || u->states.nelts == 0) {
|
|
|
2627 v->not_found = 1;
|
|
|
2628 return NGX_OK;
|
|
|
2629 }
|
|
|
2630
|
|
|
2631 len = u->states.nelts * (3 + 2);
|
|
|
2632
|
|
|
2633 p = ngx_palloc(r->pool, len);
|
|
|
2634 if (p == NULL) {
|
|
|
2635 return NGX_ERROR;
|
|
|
2636 }
|
|
|
2637
|
|
|
2638 v->data = p;
|
|
|
2639
|
|
|
2640 i = 0;
|
|
|
2641 state = u->states.elts;
|
|
|
2642
|
|
|
2643 for ( ;; ) {
|
|
|
2644 if (state[i].status == 0) {
|
|
|
2645 *p++ = '-';
|
|
|
2646
|
|
|
2647 } else {
|
|
|
2648 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2649 }
|
|
|
2650
|
|
|
2651 if (++i == u->states.nelts) {
|
|
|
2652 break;
|
|
|
2653 }
|
|
|
2654
|
|
|
2655 *p++ = ',';
|
|
|
2656 *p++ = ' ';
|
|
|
2657 }
|
|
|
2658
|
|
|
2659 v->len = p - v->data;
|
|
|
2660
|
|
|
2661 return NGX_OK;
|
|
|
2662 }
|
|
|
2663
|
|
|
2664
|
|
|
2665 static ngx_int_t
|
|
|
2666 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2667 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2668 {
|
|
|
2669 u_char *p;
|
|
|
2670 size_t len;
|
|
|
2671 ngx_uint_t i;
|
|
|
2672 ngx_http_upstream_t *u;
|
|
|
2673 ngx_http_upstream_state_t *state;
|
|
|
2674
|
|
|
2675 v->valid = 1;
|
|
|
2676 v->no_cachable = 0;
|
|
|
2677 v->not_found = 0;
|
|
|
2678
|
|
|
2679 u = r->upstream;
|
|
|
2680
|
|
|
2681 if (u == NULL || u->states.nelts == 0) {
|
|
|
2682 v->not_found = 1;
|
|
|
2683 return NGX_OK;
|
|
|
2684 }
|
|
|
2685
|
|
|
2686 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2687
|
|
|
2688 p = ngx_palloc(r->pool, len);
|
|
|
2689 if (p == NULL) {
|
|
|
2690 return NGX_ERROR;
|
|
|
2691 }
|
|
|
2692
|
|
|
2693 v->data = p;
|
|
|
2694
|
|
|
2695 i = 0;
|
|
|
2696 state = u->states.elts;
|
|
|
2697
|
|
|
2698 for ( ;; ) {
|
|
|
2699 if (state[i].status == 0) {
|
|
|
2700 *p++ = '-';
|
|
|
2701
|
|
|
2702 } else {
|
|
|
2703 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2704 state[i].response_time / 1000,
|
|
|
2705 state[i].response_time % 1000);
|
|
|
2706 }
|
|
|
2707
|
|
|
2708 if (++i == u->states.nelts) {
|
|
|
2709 break;
|
|
|
2710 }
|
|
|
2711
|
|
|
2712 *p++ = ',';
|
|
|
2713 *p++ = ' ';
|
|
|
2714 }
|
|
|
2715
|
|
|
2716 v->len = p - v->data;
|
|
|
2717
|
|
|
2718 return NGX_OK;
|
|
|
2719 }
|
|
|
2720
|
|
|
2721
|
|
200
|
2722 static char *
|
|
|
2723 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2724 {
|
|
|
2725 char *rv;
|
|
|
2726 void *mconf;
|
|
|
2727 ngx_str_t *value;
|
|
|
2728 ngx_url_t u;
|
|
|
2729 ngx_uint_t i, j, m, n;
|
|
|
2730 ngx_conf_t pcf;
|
|
|
2731 ngx_peers_t **peers;
|
|
|
2732 ngx_http_module_t *module;
|
|
|
2733 ngx_http_conf_ctx_t *ctx;
|
|
|
2734 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2735
|
|
|
2736 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2737 if (ctx == NULL) {
|
|
|
2738 return NGX_CONF_ERROR;
|
|
|
2739 }
|
|
|
2740
|
|
|
2741 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2742
|
|
|
2743 value = cf->args->elts;
|
|
|
2744 u.host = value[1];
|
|
|
2745
|
|
|
2746 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2747 if (uscf == NULL) {
|
|
|
2748 return NGX_CONF_ERROR;
|
|
|
2749 }
|
|
|
2750
|
|
|
2751 /* the upstream{}'s srv_conf */
|
|
|
2752
|
|
|
2753 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2754 if (ctx->srv_conf == NULL) {
|
|
|
2755 return NGX_CONF_ERROR;
|
|
|
2756 }
|
|
|
2757
|
|
|
2758 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2759
|
|
|
2760
|
|
|
2761 /* the upstream{}'s loc_conf */
|
|
|
2762
|
|
|
2763 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2764 if (ctx->loc_conf == NULL) {
|
|
|
2765 return NGX_CONF_ERROR;
|
|
|
2766 }
|
|
|
2767
|
|
|
2768 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2769 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2770 continue;
|
|
|
2771 }
|
|
|
2772
|
|
|
2773 module = ngx_modules[m]->ctx;
|
|
|
2774
|
|
|
2775 if (module->create_loc_conf) {
|
|
|
2776 mconf = module->create_loc_conf(cf);
|
|
|
2777 if (mconf == NULL) {
|
|
|
2778 return NGX_CONF_ERROR;
|
|
|
2779 }
|
|
|
2780
|
|
|
2781 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2782 }
|
|
|
2783 }
|
|
|
2784
|
|
|
2785
|
|
|
2786 /* parse inside upstream{} */
|
|
|
2787
|
|
|
2788 pcf = *cf;
|
|
|
2789 cf->ctx = ctx;
|
|
|
2790 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2791
|
|
|
2792 rv = ngx_conf_parse(cf, NULL);
|
|
|
2793
|
|
|
2794 *cf = pcf;
|
|
|
2795
|
|
|
2796 if (rv != NGX_CONF_OK) {
|
|
|
2797 return rv;
|
|
|
2798 }
|
|
|
2799
|
|
|
2800 if (uscf->servers == NULL) {
|
|
|
2801 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2802 "no servers are inside upstream");
|
|
|
2803 return NGX_CONF_ERROR;
|
|
|
2804 }
|
|
|
2805
|
|
|
2806 peers = uscf->servers->elts;
|
|
|
2807
|
|
|
2808 if (uscf->servers->nelts == 1) {
|
|
|
2809 uscf->peers = peers[0];
|
|
|
2810 }
|
|
|
2811
|
|
|
2812 n = 0;
|
|
|
2813
|
|
|
2814 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2815 n += peers[i]->number;
|
|
|
2816 }
|
|
|
2817
|
|
|
2818 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2819 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2820 if (uscf->peers == NULL) {
|
|
|
2821 return NGX_CONF_ERROR;
|
|
|
2822 }
|
|
|
2823
|
|
|
2824 uscf->peers->number = n;
|
|
|
2825
|
|
|
2826 n = 0;
|
|
|
2827
|
|
|
2828 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2829 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2830 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2831 }
|
|
|
2832 }
|
|
|
2833
|
|
|
2834 return rv;
|
|
|
2835 }
|
|
|
2836
|
|
|
2837
|
|
|
2838 static char *
|
|
|
2839 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2840 {
|
|
|
2841 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2842
|
|
|
2843 ngx_str_t *value;
|
|
|
2844 ngx_url_t u;
|
|
212
|
2845 ngx_int_t weight;
|
|
|
2846 ngx_uint_t i;
|
|
200
|
2847 ngx_peers_t **peers;
|
|
|
2848
|
|
|
2849 if (uscf->servers == NULL) {
|
|
|
2850 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2851 if (uscf->servers == NULL) {
|
|
|
2852 return NGX_CONF_ERROR;
|
|
|
2853 }
|
|
|
2854 }
|
|
|
2855
|
|
|
2856 peers = ngx_array_push(uscf->servers);
|
|
|
2857 if (peers == NULL) {
|
|
|
2858 return NGX_CONF_ERROR;
|
|
|
2859 }
|
|
|
2860
|
|
|
2861 value = cf->args->elts;
|
|
|
2862
|
|
|
2863 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2864
|
|
|
2865 u.url = value[1];
|
|
|
2866 u.default_portn = 80;
|
|
|
2867
|
|
|
2868 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2869 if (u.err) {
|
|
|
2870 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2871 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2872 }
|
|
|
2873
|
|
|
2874 return NGX_CONF_ERROR;
|
|
|
2875 }
|
|
|
2876
|
|
212
|
2877 weight = 1;
|
|
|
2878
|
|
|
2879 if (cf->args->nelts == 3) {
|
|
|
2880
|
|
|
2881 value = &value[2];
|
|
|
2882
|
|
|
2883 if (ngx_strncmp(value->data, "weight=", 7) == 0) {
|
|
|
2884
|
|
|
2885 weight = ngx_atoi(&value->data[7], value->len - 7);
|
|
|
2886
|
|
|
2887 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2888 goto invalid;
|
|
|
2889 }
|
|
|
2890
|
|
|
2891 } else {
|
|
|
2892 goto invalid;
|
|
|
2893 }
|
|
|
2894 }
|
|
|
2895
|
|
|
2896 for (i = 0; i < u.peers->number; i++) {
|
|
|
2897 u.peers->peer[i].weight = weight;
|
|
|
2898 u.peers->peer[i].current_weight = weight;
|
|
|
2899 u.peers->peer[i].max_fails = NGX_CONF_UNSET_UINT;
|
|
|
2900 u.peers->peer[i].fail_timeout = NGX_CONF_UNSET;
|
|
|
2901 }
|
|
|
2902
|
|
200
|
2903 *peers = u.peers;
|
|
|
2904
|
|
|
2905 return NGX_CONF_OK;
|
|
212
|
2906
|
|
|
2907 invalid:
|
|
|
2908
|
|
|
2909 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", value);
|
|
|
2910
|
|
|
2911 return NGX_CONF_ERROR;
|
|
200
|
2912 }
|
|
|
2913
|
|
|
2914
|
|
|
2915 ngx_http_upstream_srv_conf_t *
|
|
|
2916 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2917 {
|
|
|
2918 ngx_uint_t i;
|
|
|
2919 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2920 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2921
|
|
|
2922 if (u->upstream) {
|
|
|
2923 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2924 if (u->err) {
|
|
|
2925 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2926 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2927 }
|
|
|
2928
|
|
|
2929 return NULL;
|
|
|
2930 }
|
|
|
2931
|
|
|
2932 if (u->peers) {
|
|
|
2933 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2934 if (uscf == NULL) {
|
|
|
2935 return NULL;
|
|
|
2936 }
|
|
|
2937
|
|
|
2938 uscf->peers = u->peers;
|
|
|
2939
|
|
|
2940 return uscf;
|
|
|
2941 }
|
|
|
2942 }
|
|
|
2943
|
|
|
2944 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2945
|
|
|
2946 uscfp = umcf->upstreams.elts;
|
|
|
2947
|
|
|
2948 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2949 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2950 continue;
|
|
|
2951 }
|
|
|
2952
|
|
|
2953 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2954 == 0)
|
|
|
2955 {
|
|
|
2956 return uscfp[i];
|
|
|
2957 }
|
|
|
2958 }
|
|
|
2959
|
|
|
2960 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2961 if (uscf == NULL) {
|
|
|
2962 return NULL;
|
|
|
2963 }
|
|
|
2964
|
|
|
2965 uscf->host = u->host;
|
|
|
2966 uscf->file_name = cf->conf_file->file.name;
|
|
|
2967 uscf->line = cf->conf_file->line;
|
|
|
2968 uscf->port = u->default_portn;
|
|
|
2969
|
|
|
2970 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2971 if (uscfp == NULL) {
|
|
|
2972 return NULL;
|
|
|
2973 }
|
|
|
2974
|
|
|
2975 *uscfp = uscf;
|
|
|
2976
|
|
|
2977 return uscf;
|
|
|
2978 }
|
|
|
2979
|
|
|
2980
|
|
58
|
2981 static void *
|
|
|
2982 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2983 {
|
|
|
2984 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2985
|
|
|
2986 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2987 if (umcf == NULL) {
|
|
|
2988 return NULL;
|
|
|
2989 }
|
|
|
2990
|
|
200
|
2991 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2992 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2993 != NGX_OK)
|
|
|
2994 {
|
|
|
2995 return NGX_CONF_ERROR;
|
|
|
2996 }
|
|
|
2997
|
|
58
|
2998 return umcf;
|
|
|
2999 }
|
|
|
3000
|
|
|
3001
|
|
|
3002 static char *
|
|
200
|
3003 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3004 {
|
|
|
3005 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3006
|
|
200
|
3007 ngx_uint_t i;
|
|
|
3008 ngx_array_t headers_in;
|
|
|
3009 ngx_hash_key_t *hk;
|
|
|
3010 ngx_hash_init_t hash;
|
|
|
3011 ngx_http_upstream_header_t *header;
|
|
|
3012 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3013
|
|
|
3014 uscfp = umcf->upstreams.elts;
|
|
|
3015
|
|
|
3016 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
3017 if (uscfp[i]->peers) {
|
|
|
3018 continue;
|
|
|
3019 }
|
|
|
3020
|
|
|
3021 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
212
|
3022 uscfp[i]->port);
|
|
200
|
3023 if (uscfp[i]->peers == NULL) {
|
|
|
3024 return NGX_CONF_ERROR;
|
|
|
3025 }
|
|
|
3026
|
|
|
3027 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
3028 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
3029 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
3030 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
3031 uscfp[i]->line);
|
|
|
3032 return NGX_CONF_ERROR;
|
|
|
3033 }
|
|
|
3034 }
|
|
198
|
3035
|
|
212
|
3036
|
|
198
|
3037 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3038 != NGX_OK)
|
|
58
|
3039 {
|
|
|
3040 return NGX_CONF_ERROR;
|
|
|
3041 }
|
|
|
3042
|
|
198
|
3043 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3044 hk = ngx_array_push(&headers_in);
|
|
|
3045 if (hk == NULL) {
|
|
|
3046 return NGX_CONF_ERROR;
|
|
|
3047 }
|
|
|
3048
|
|
|
3049 hk->key = header->name;
|
|
|
3050 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3051 hk->value = header;
|
|
|
3052 }
|
|
|
3053
|
|
|
3054 hash.hash = &umcf->headers_in_hash;
|
|
|
3055 hash.key = ngx_hash_key_lc;
|
|
|
3056 hash.max_size = 512;
|
|
244
|
3057 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3058 hash.name = "upstream_headers_in_hash";
|
|
|
3059 hash.pool = cf->pool;
|
|
|
3060 hash.temp_pool = NULL;
|
|
|
3061
|
|
|
3062 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3063 return NGX_CONF_ERROR;
|
|
|
3064 }
|
|
58
|
3065
|
|
|
3066 return NGX_CONF_OK;
|
|
|
3067 }
|
