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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;
|
|
258
|
515 ngx_msec_int_t ms;
|
|
140
|
516 ngx_connection_t *c;
|
|
28
|
517
|
|
32
|
518 r->connection->log->action = "connecting to upstream";
|
|
28
|
519
|
|
|
520 r->connection->single_connection = 0;
|
|
|
521
|
|
214
|
522 if (u->state && u->state->response_time) {
|
|
|
523 tp = ngx_timeofday();
|
|
258
|
524 ms = tp->sec * 1000 + tp->msec - u->state->response_time;
|
|
|
525 u->state->response_time = (ms >= 0) ? ms : 0;
|
|
214
|
526 }
|
|
|
527
|
|
|
528 u->state = ngx_array_push(&u->states);
|
|
|
529 if (u->state == NULL) {
|
|
|
530 ngx_http_upstream_finalize_request(r, u,
|
|
|
531 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
532 return;
|
|
|
533 }
|
|
|
534
|
|
|
535 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
536
|
|
|
537 tp = ngx_timeofday();
|
|
|
538 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
539
|
|
28
|
540 rc = ngx_event_connect_peer(&u->peer);
|
|
|
541
|
|
|
542 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
543 "http upstream connect: %i", rc);
|
|
|
544
|
|
|
545 if (rc == NGX_ERROR) {
|
|
|
546 ngx_http_upstream_finalize_request(r, u,
|
|
|
547 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
548 return;
|
|
|
549 }
|
|
|
550
|
|
140
|
551 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
552
|
|
92
|
553 if (rc == NGX_BUSY) {
|
|
|
554 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
555 }
|
|
|
556
|
|
|
557 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
558 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
559 return;
|
|
|
560 }
|
|
|
561
|
|
126
|
562 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
563
|
|
28
|
564 c = u->peer.connection;
|
|
|
565
|
|
|
566 c->data = r;
|
|
140
|
567
|
|
58
|
568 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
569 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
570
|
|
|
571 c->sendfile = r->connection->sendfile;
|
|
|
572
|
|
|
573 c->pool = r->pool;
|
|
|
574 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
575
|
|
|
576 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
577
|
|
|
578 u->writer.out = NULL;
|
|
|
579 u->writer.last = &u->writer.out;
|
|
|
580 u->writer.connection = c;
|
|
|
581 u->writer.limit = 0;
|
|
|
582
|
|
|
583 if (u->request_sent) {
|
|
58
|
584 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
585 ngx_http_upstream_finalize_request(r, u,
|
|
|
586 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
587 return;
|
|
|
588 }
|
|
28
|
589 }
|
|
|
590
|
|
146
|
591 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
592
|
|
|
593 /*
|
|
|
594 * the r->request_body->buf can be reused for one request only,
|
|
|
595 * the subrequests should allocate their own temporay bufs
|
|
|
596 */
|
|
|
597
|
|
|
598 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
599 if (u->output.free == NULL) {
|
|
|
600 ngx_http_upstream_finalize_request(r, u,
|
|
|
601 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
602 return;
|
|
28
|
603 }
|
|
122
|
604
|
|
|
605 u->output.free->buf = r->request_body->buf;
|
|
|
606 u->output.free->next = NULL;
|
|
|
607 u->output.allocated = 1;
|
|
|
608
|
|
|
609 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
610 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
611 r->request_body->buf->tag = u->output.tag;
|
|
28
|
612 }
|
|
|
613
|
|
|
614 u->request_sent = 0;
|
|
|
615
|
|
|
616 if (rc == NGX_AGAIN) {
|
|
|
617 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
618 return;
|
|
|
619 }
|
|
|
620
|
|
126
|
621 #if (NGX_HTTP_SSL)
|
|
|
622
|
|
140
|
623 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
624 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
625 return;
|
|
|
626 }
|
|
|
627
|
|
|
628 #endif
|
|
|
629
|
|
28
|
630 ngx_http_upstream_send_request(r, u);
|
|
|
631 }
|
|
|
632
|
|
|
633
|
|
126
|
634 #if (NGX_HTTP_SSL)
|
|
|
635
|
|
|
636 static void
|
|
140
|
637 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
638 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
639 {
|
|
|
640 ngx_int_t rc;
|
|
|
641 ngx_peer_t *peer;
|
|
|
642
|
|
|
643 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
644 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
645 == NGX_ERROR)
|
|
|
646 {
|
|
|
647 ngx_http_upstream_finalize_request(r, u,
|
|
|
648 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
649 return;
|
|
|
650 }
|
|
|
651
|
|
|
652 c->sendfile = 0;
|
|
168
|
653 u->output.sendfile = 0;
|
|
140
|
654
|
|
|
655 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
656
|
|
|
657 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
658 ngx_http_upstream_finalize_request(r, u,
|
|
|
659 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
660 return;
|
|
|
661 }
|
|
|
662
|
|
190
|
663 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
664
|
|
140
|
665 rc = ngx_ssl_handshake(c);
|
|
|
666
|
|
|
667 if (rc == NGX_AGAIN) {
|
|
|
668 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
669 return;
|
|
|
670 }
|
|
|
671
|
|
|
672 ngx_http_upstream_ssl_handshake(c);
|
|
|
673 }
|
|
|
674
|
|
|
675
|
|
|
676 static void
|
|
126
|
677 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
678 {
|
|
|
679 ngx_http_request_t *r;
|
|
|
680 ngx_http_upstream_t *u;
|
|
|
681
|
|
|
682 r = c->data;
|
|
|
683 u = r->upstream;
|
|
|
684
|
|
|
685 if (c->ssl->handshaked) {
|
|
|
686
|
|
|
687 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
688 c->read->handler = ngx_http_upstream_process_header;
|
|
|
689
|
|
|
690 ngx_http_upstream_send_request(r, u);
|
|
|
691
|
|
|
692 return;
|
|
|
693 }
|
|
|
694
|
|
|
695 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
696
|
|
|
697 }
|
|
|
698
|
|
|
699 #endif
|
|
|
700
|
|
|
701
|
|
58
|
702 static ngx_int_t
|
|
36
|
703 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
704 {
|
|
|
705 ngx_chain_t *cl;
|
|
|
706
|
|
58
|
707 if (u->reinit_request(r) != NGX_OK) {
|
|
|
708 return NGX_ERROR;
|
|
|
709 }
|
|
|
710
|
|
|
711 ngx_memzero(&r->upstream->headers_in,
|
|
|
712 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
713
|
|
|
714 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
715 sizeof(ngx_table_elt_t))
|
|
|
716 != NGX_OK)
|
|
58
|
717 {
|
|
|
718 return NGX_ERROR;
|
|
28
|
719 }
|
|
|
720
|
|
|
721 /* reinit the request chain */
|
|
126
|
722
|
|
58
|
723 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
724 cl->buf->pos = cl->buf->start;
|
|
|
725 cl->buf->file_pos = 0;
|
|
|
726 }
|
|
|
727
|
|
58
|
728 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
729
|
|
122
|
730 if (r->request_body && r->request_body->temp_file
|
|
146
|
731 && r != r->main && u->output.buf)
|
|
122
|
732 {
|
|
|
733 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
734 if (u->output.free == NULL) {
|
|
|
735 return NGX_ERROR;
|
|
58
|
736 }
|
|
122
|
737
|
|
|
738 u->output.free->buf = u->output.buf;
|
|
|
739 u->output.free->next = NULL;
|
|
|
740
|
|
|
741 u->output.buf->pos = u->output.buf->start;
|
|
|
742 u->output.buf->last = u->output.buf->start;
|
|
58
|
743 }
|
|
28
|
744
|
|
|
745 u->output.buf = NULL;
|
|
|
746 u->output.in = NULL;
|
|
|
747 u->output.busy = NULL;
|
|
126
|
748
|
|
130
|
749 /* reinit u->buffer */
|
|
126
|
750
|
|
28
|
751 #if 0
|
|
|
752 if (u->cache) {
|
|
130
|
753 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
754 u->buffer.last = u->buffer.pos;
|
|
28
|
755
|
|
|
756 } else {
|
|
130
|
757 u->buffer.pos = u->buffer.start;
|
|
|
758 u->buffer.last = u->buffer.start;
|
|
28
|
759 }
|
|
|
760 #else
|
|
58
|
761
|
|
130
|
762 u->buffer.pos = u->buffer.start;
|
|
|
763 u->buffer.last = u->buffer.start;
|
|
58
|
764
|
|
28
|
765 #endif
|
|
|
766
|
|
58
|
767 return NGX_OK;
|
|
28
|
768 }
|
|
|
769
|
|
|
770
|
|
36
|
771 static void
|
|
|
772 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
773 {
|
|
220
|
774 int rc, err;
|
|
|
775 socklen_t len;
|
|
32
|
776 ngx_connection_t *c;
|
|
126
|
777
|
|
28
|
778 c = u->peer.connection;
|
|
|
779
|
|
|
780 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
781 "http upstream send request");
|
|
|
782
|
|
220
|
783 if (!u->request_sent) {
|
|
|
784
|
|
28
|
785 #if (NGX_HAVE_KQUEUE)
|
|
|
786
|
|
220
|
787 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
788 if (c->write->pending_eof) {
|
|
|
789 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
86
|
790 "kevent() reported that connect() failed");
|
|
220
|
791 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
792 return;
|
|
|
793 }
|
|
|
794
|
|
|
795 } else
|
|
|
796 #endif
|
|
|
797 {
|
|
|
798 err = 0;
|
|
|
799 len = sizeof(int);
|
|
|
800
|
|
|
801 /*
|
|
|
802 * BSDs and Linux return 0 and set a pending error in err
|
|
|
803 * Solaris returns -1 and sets errno
|
|
|
804 */
|
|
|
805
|
|
|
806 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
807 == -1)
|
|
|
808 {
|
|
|
809 err = ngx_errno;
|
|
|
810 }
|
|
|
811
|
|
|
812 if (err) {
|
|
|
813 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
814 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
815 return;
|
|
|
816 }
|
|
|
817 }
|
|
28
|
818 }
|
|
|
819
|
|
32
|
820 c->log->action = "sending request to upstream";
|
|
28
|
821
|
|
58
|
822 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
823
|
|
|
824 u->request_sent = 1;
|
|
|
825
|
|
|
826 if (rc == NGX_ERROR) {
|
|
|
827 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
828 return;
|
|
|
829 }
|
|
|
830
|
|
|
831 if (c->write->timer_set) {
|
|
|
832 ngx_del_timer(c->write);
|
|
|
833 }
|
|
|
834
|
|
|
835 if (rc == NGX_AGAIN) {
|
|
|
836 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
837
|
|
|
838 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
839 {
|
|
|
840 ngx_http_upstream_finalize_request(r, u,
|
|
|
841 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
842 return;
|
|
|
843 }
|
|
|
844
|
|
|
845 return;
|
|
|
846 }
|
|
|
847
|
|
|
848 /* rc == NGX_OK */
|
|
|
849
|
|
|
850 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
851 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
852 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
853 ngx_tcp_push_n " failed");
|
|
|
854 ngx_http_upstream_finalize_request(r, u,
|
|
|
855 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
856 return;
|
|
28
|
857 }
|
|
|
858
|
|
|
859 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
860 }
|
|
126
|
861
|
|
28
|
862 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
863
|
|
|
864 #if 1
|
|
|
865 if (c->read->ready) {
|
|
126
|
866
|
|
28
|
867 /* post aio operation */
|
|
|
868
|
|
|
869 /*
|
|
|
870 * TODO comment
|
|
|
871 * although we can post aio operation just in the end
|
|
|
872 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
873 * it's better to do here because we postpone header buffer allocation
|
|
|
874 */
|
|
|
875
|
|
|
876 ngx_http_upstream_process_header(c->read);
|
|
|
877 return;
|
|
|
878 }
|
|
|
879 #endif
|
|
|
880
|
|
58
|
881 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
882
|
|
58
|
883 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
884 ngx_http_upstream_finalize_request(r, u,
|
|
|
885 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
886 return;
|
|
|
887 }
|
|
|
888 }
|
|
|
889
|
|
|
890
|
|
36
|
891 static void
|
|
|
892 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
893 {
|
|
|
894 ngx_connection_t *c;
|
|
|
895 ngx_http_request_t *r;
|
|
|
896 ngx_http_upstream_t *u;
|
|
|
897
|
|
|
898 c = wev->data;
|
|
|
899 r = c->data;
|
|
|
900 u = r->upstream;
|
|
|
901
|
|
|
902 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
903 "http upstream send request handler");
|
|
|
904
|
|
|
905 if (wev->timedout) {
|
|
|
906 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
907 return;
|
|
|
908 }
|
|
|
909
|
|
140
|
910 #if (NGX_HTTP_SSL)
|
|
|
911
|
|
|
912 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
913 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
914 return;
|
|
|
915 }
|
|
|
916
|
|
|
917 #endif
|
|
|
918
|
|
200
|
919 if (u->header_sent) {
|
|
|
920 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
921
|
|
|
922 (void) ngx_handle_write_event(wev, 0);
|
|
|
923
|
|
|
924 return;
|
|
|
925 }
|
|
|
926
|
|
28
|
927 ngx_http_upstream_send_request(r, u);
|
|
|
928 }
|
|
|
929
|
|
|
930
|
|
36
|
931 static void
|
|
|
932 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
933 {
|
|
64
|
934 ssize_t n;
|
|
|
935 ngx_int_t rc;
|
|
122
|
936 ngx_str_t *uri, args;
|
|
198
|
937 ngx_uint_t i, flags;
|
|
64
|
938 ngx_list_part_t *part;
|
|
|
939 ngx_table_elt_t *h;
|
|
|
940 ngx_connection_t *c;
|
|
|
941 ngx_http_request_t *r;
|
|
|
942 ngx_http_upstream_t *u;
|
|
|
943 ngx_http_err_page_t *err_page;
|
|
|
944 ngx_http_core_loc_conf_t *clcf;
|
|
|
945 ngx_http_upstream_header_t *hh;
|
|
|
946 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
947
|
|
|
948 c = rev->data;
|
|
|
949 r = c->data;
|
|
|
950 u = r->upstream;
|
|
|
951
|
|
|
952 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
953 "http upstream process header");
|
|
28
|
954
|
|
32
|
955 c->log->action = "reading response header from upstream";
|
|
28
|
956
|
|
|
957 if (rev->timedout) {
|
|
|
958 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
959 return;
|
|
|
960 }
|
|
126
|
961
|
|
130
|
962 if (u->buffer.start == NULL) {
|
|
|
963 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
964 if (u->buffer.start == NULL) {
|
|
28
|
965 ngx_http_upstream_finalize_request(r, u,
|
|
|
966 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
967 return;
|
|
|
968 }
|
|
|
969
|
|
130
|
970 u->buffer.pos = u->buffer.start;
|
|
|
971 u->buffer.last = u->buffer.start;
|
|
|
972 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
973 u->buffer.temporary = 1;
|
|
|
974
|
|
|
975 u->buffer.tag = u->output.tag;
|
|
28
|
976
|
|
58
|
977 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
978 sizeof(ngx_table_elt_t))
|
|
|
979 != NGX_OK)
|
|
58
|
980 {
|
|
|
981 ngx_http_upstream_finalize_request(r, u,
|
|
|
982 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
983 return;
|
|
|
984 }
|
|
|
985
|
|
28
|
986 #if 0
|
|
|
987 if (u->cache) {
|
|
130
|
988 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
989 u->buffer.last = u->buffer.pos;
|
|
28
|
990 }
|
|
|
991 #endif
|
|
|
992 }
|
|
|
993
|
|
130
|
994 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
995 u->buffer.end - u->buffer.last);
|
|
28
|
996
|
|
|
997 if (n == NGX_AGAIN) {
|
|
|
998 #if 0
|
|
|
999 ngx_add_timer(rev, u->read_timeout);
|
|
|
1000 #endif
|
|
|
1001
|
|
|
1002 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1003 ngx_http_upstream_finalize_request(r, u,
|
|
|
1004 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1005 return;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 return;
|
|
|
1009 }
|
|
|
1010
|
|
|
1011 if (n == 0) {
|
|
|
1012 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1013 "upstream prematurely closed connection");
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 if (n == NGX_ERROR || n == 0) {
|
|
|
1017 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1018 return;
|
|
|
1019 }
|
|
|
1020
|
|
130
|
1021 u->buffer.last += n;
|
|
28
|
1022
|
|
|
1023 #if 0
|
|
|
1024 u->valid_header_in = 0;
|
|
|
1025
|
|
|
1026 u->peer.cached = 0;
|
|
|
1027 #endif
|
|
|
1028
|
|
|
1029 rc = u->process_header(r);
|
|
|
1030
|
|
|
1031 if (rc == NGX_AGAIN) {
|
|
|
1032 #if 0
|
|
|
1033 ngx_add_timer(rev, u->read_timeout);
|
|
|
1034 #endif
|
|
|
1035
|
|
130
|
1036 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1037 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1038 "upstream sent too big header");
|
|
|
1039
|
|
|
1040 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1041 return;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1045 ngx_http_upstream_finalize_request(r, u,
|
|
|
1046 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1047 return;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 return;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1054 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1055 return;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1059 ngx_http_upstream_finalize_request(r, u,
|
|
|
1060 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1061 return;
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 /* rc == NGX_OK */
|
|
|
1065
|
|
248
|
1066 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1067 && r->subrequest_in_memory)
|
|
|
1068 {
|
|
|
1069 u->buffer.last = u->buffer.pos;
|
|
|
1070 }
|
|
|
1071
|
|
78
|
1072 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1073
|
|
|
1074 if (u->peer.tries > 1
|
|
|
1075 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1076 {
|
|
|
1077 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1078 return;
|
|
|
1079 }
|
|
|
1080
|
|
|
1081 #if (NGX_HTTP_CACHE)
|
|
|
1082
|
|
|
1083 if (u->peer.tries == 0
|
|
|
1084 && u->stale
|
|
|
1085 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1086 {
|
|
|
1087 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1088 ngx_http_send_cached_response(r));
|
|
58
|
1089 return;
|
|
|
1090 }
|
|
|
1091
|
|
|
1092 #endif
|
|
|
1093 }
|
|
|
1094
|
|
146
|
1095 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1096
|
|
|
1097 if (u->peer.tries > 1
|
|
|
1098 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1099 {
|
|
|
1100 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1101 return;
|
|
|
1102 }
|
|
|
1103
|
|
224
|
1104 if (u->conf->intercept_404) {
|
|
|
1105 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1106 return;
|
|
|
1107 }
|
|
58
|
1108 }
|
|
|
1109
|
|
|
1110
|
|
78
|
1111 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1112 && u->conf->intercept_errors)
|
|
36
|
1113 {
|
|
|
1114 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1115
|
|
|
1116 if (clcf->error_pages) {
|
|
|
1117
|
|
|
1118 err_page = clcf->error_pages->elts;
|
|
|
1119 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1120 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1121
|
|
|
1122 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1123
|
|
|
1124 r->headers_out.www_authenticate =
|
|
|
1125 ngx_list_push(&r->headers_out.headers);
|
|
|
1126
|
|
|
1127 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1128 ngx_http_upstream_finalize_request(r, u,
|
|
|
1129 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1130 return;
|
|
|
1131 }
|
|
|
1132
|
|
126
|
1133 *r->headers_out.www_authenticate =
|
|
78
|
1134 *u->headers_in.www_authenticate;
|
|
|
1135 }
|
|
|
1136
|
|
36
|
1137 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1138 u->headers_in.status_n);
|
|
36
|
1139 return;
|
|
|
1140 }
|
|
|
1141 }
|
|
|
1142 }
|
|
|
1143 }
|
|
|
1144
|
|
230
|
1145 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1146
|
|
64
|
1147 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1148
|
|
64
|
1149 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1150
|
|
|
1151 part = &r->upstream->headers_in.headers.part;
|
|
|
1152 h = part->elts;
|
|
|
1153
|
|
|
1154 for (i = 0; /* void */; i++) {
|
|
|
1155
|
|
|
1156 if (i >= part->nelts) {
|
|
|
1157 if (part->next == NULL) {
|
|
|
1158 break;
|
|
|
1159 }
|
|
126
|
1160
|
|
64
|
1161 part = part->next;
|
|
|
1162 h = part->elts;
|
|
|
1163 i = 0;
|
|
|
1164 }
|
|
|
1165
|
|
198
|
1166 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1167 h[i].lowcase_key, h[i].key.len);
|
|
|
1168
|
|
|
1169 if (hh && hh->redirect) {
|
|
|
1170 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1171 ngx_http_finalize_request(r,
|
|
244
|
1172 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1173 return;
|
|
|
1174 }
|
|
|
1175 }
|
|
|
1176 }
|
|
|
1177
|
|
122
|
1178 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1179 args.len = 0;
|
|
|
1180 args.data = NULL;
|
|
|
1181 flags = 0;
|
|
|
1182
|
|
|
1183 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1184 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1185 return;
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1189 r->zero_in_uri = 1;
|
|
|
1190 }
|
|
|
1191
|
|
202
|
1192 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1193 r->method = NGX_HTTP_GET;
|
|
|
1194 }
|
|
|
1195
|
|
122
|
1196 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1197 return;
|
|
|
1198 }
|
|
|
1199
|
|
58
|
1200 part = &r->upstream->headers_in.headers.part;
|
|
|
1201 h = part->elts;
|
|
|
1202
|
|
|
1203 for (i = 0; /* void */; i++) {
|
|
28
|
1204
|
|
58
|
1205 if (i >= part->nelts) {
|
|
|
1206 if (part->next == NULL) {
|
|
|
1207 break;
|
|
|
1208 }
|
|
126
|
1209
|
|
58
|
1210 part = part->next;
|
|
|
1211 h = part->elts;
|
|
|
1212 i = 0;
|
|
|
1213 }
|
|
|
1214
|
|
198
|
1215 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1216 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1217 {
|
|
198
|
1218 continue;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1222 h[i].lowcase_key, h[i].key.len);
|
|
|
1223
|
|
|
1224 if (hh) {
|
|
|
1225 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1226 ngx_http_upstream_finalize_request(r, u,
|
|
|
1227 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1228 return;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 continue;
|
|
|
1232 }
|
|
|
1233
|
|
|
1234 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1235 ngx_http_upstream_finalize_request(r, u,
|
|
|
1236 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1237 return;
|
|
|
1238 }
|
|
|
1239 }
|
|
|
1240
|
|
198
|
1241 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1242 r->headers_out.server->hash = 0;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1246 r->headers_out.date->hash = 0;
|
|
|
1247 }
|
|
|
1248
|
|
78
|
1249 r->headers_out.status = u->headers_in.status_n;
|
|
|
1250 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1251
|
|
130
|
1252 if (r->headers_out.content_length_n != -1) {
|
|
|
1253 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1254
|
|
|
1255 } else {
|
|
|
1256 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1257 }
|
|
|
1258
|
|
248
|
1259 if (!r->subrequest_in_memory) {
|
|
|
1260 ngx_http_upstream_send_response(r, u);
|
|
|
1261 return;
|
|
|
1262 }
|
|
|
1263
|
|
|
1264 /* subrequest content in memory */
|
|
|
1265
|
|
|
1266 if (u->input_filter == NULL) {
|
|
|
1267 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1268 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1269 u->input_filter_ctx = r;
|
|
|
1270 }
|
|
|
1271
|
|
|
1272 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1273 ngx_http_upstream_finalize_request(r, u,
|
|
|
1274 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1275 return;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1279 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1280 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1281 return;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1285 return;
|
|
|
1286 }
|
|
|
1287
|
|
|
1288 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1289
|
|
|
1290 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1291 }
|
|
|
1292
|
|
|
1293
|
|
|
1294 static void
|
|
|
1295 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1296 {
|
|
|
1297 size_t size;
|
|
|
1298 ssize_t n;
|
|
|
1299 ngx_buf_t *b;
|
|
|
1300 ngx_connection_t *c;
|
|
|
1301 ngx_http_request_t *r;
|
|
|
1302 ngx_http_upstream_t *u;
|
|
|
1303
|
|
|
1304 c = rev->data;
|
|
|
1305 r = c->data;
|
|
|
1306 u = r->upstream;
|
|
|
1307
|
|
|
1308 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1309 "http upstream process body on memory");
|
|
|
1310
|
|
|
1311 if (rev->timedout) {
|
|
|
1312 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1313 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1314 return;
|
|
|
1315 }
|
|
|
1316
|
|
|
1317 b = &u->buffer;
|
|
|
1318
|
|
|
1319 for ( ;; ) {
|
|
|
1320
|
|
|
1321 size = b->end - b->last;
|
|
|
1322
|
|
|
1323 if (size == 0) {
|
|
|
1324 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1325 "upstream buffer is too small to read repsonse");
|
|
|
1326 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1327 return;
|
|
|
1328 }
|
|
|
1329
|
|
|
1330 n = c->recv(c, b->last, size);
|
|
|
1331
|
|
|
1332 if (n == NGX_AGAIN) {
|
|
|
1333 break;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 if (n == 0 || n == NGX_ERROR) {
|
|
|
1337 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1338 return;
|
|
|
1339 }
|
|
|
1340
|
|
|
1341 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1342 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1343 return;
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 if (!rev->ready) {
|
|
|
1347 break;
|
|
|
1348 }
|
|
|
1349 }
|
|
|
1350
|
|
|
1351 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1352 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1353 return;
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 if (rev->active) {
|
|
|
1357 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1358
|
|
|
1359 } else if (rev->timer_set) {
|
|
|
1360 ngx_del_timer(rev);
|
|
|
1361 }
|
|
230
|
1362 }
|
|
|
1363
|
|
|
1364
|
|
|
1365 static void
|
|
|
1366 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1367 {
|
|
|
1368 int tcp_nodelay;
|
|
|
1369 ssize_t size;
|
|
|
1370 ngx_int_t rc;
|
|
|
1371 ngx_event_pipe_t *p;
|
|
|
1372 ngx_connection_t *c;
|
|
|
1373 ngx_pool_cleanup_t *cl;
|
|
|
1374 ngx_pool_cleanup_file_t *clf;
|
|
|
1375 ngx_http_core_loc_conf_t *clcf;
|
|
|
1376
|
|
58
|
1377 rc = ngx_http_send_header(r);
|
|
28
|
1378
|
|
178
|
1379 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1380 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1381 return;
|
|
|
1382 }
|
|
|
1383
|
|
|
1384 u->header_sent = 1;
|
|
|
1385
|
|
122
|
1386 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1387 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1388 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1389 clf = cl->data;
|
|
|
1390
|
|
|
1391 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1392 cl->handler(clf);
|
|
|
1393 cl->handler = NULL;
|
|
208
|
1394 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1395 break;
|
|
|
1396 }
|
|
|
1397 }
|
|
|
1398 }
|
|
|
1399 }
|
|
|
1400
|
|
132
|
1401 c = r->connection;
|
|
|
1402
|
|
130
|
1403 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1404
|
|
198
|
1405 if (!u->buffering) {
|
|
130
|
1406
|
|
|
1407 if (u->input_filter == NULL) {
|
|
|
1408 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1409 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1410 u->input_filter_ctx = r;
|
|
|
1411 }
|
|
|
1412
|
|
|
1413 u->peer.connection->read->handler =
|
|
|
1414 ngx_http_upstream_process_non_buffered_body;
|
|
|
1415 r->write_event_handler =
|
|
|
1416 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1417
|
|
|
1418 r->limit_rate = 0;
|
|
|
1419
|
|
|
1420 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1421 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1422 return;
|
|
|
1423 }
|
|
|
1424
|
|
132
|
1425 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1426 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1427
|
|
|
1428 tcp_nodelay = 1;
|
|
|
1429
|
|
|
1430 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1431 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1432 {
|
|
|
1433 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1434 "setsockopt(TCP_NODELAY) failed");
|
|
|
1435 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1436 return;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1440 }
|
|
|
1441
|
|
130
|
1442 size = u->buffer.last - u->buffer.pos;
|
|
|
1443
|
|
|
1444 if (size) {
|
|
|
1445 u->buffer.last = u->buffer.pos;
|
|
|
1446
|
|
|
1447 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1448 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1449 return;
|
|
|
1450 }
|
|
|
1451
|
|
132
|
1452 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1453
|
|
|
1454 } else {
|
|
|
1455 u->buffer.pos = u->buffer.start;
|
|
|
1456 u->buffer.last = u->buffer.start;
|
|
|
1457
|
|
|
1458 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1459 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1460 return;
|
|
|
1461 }
|
|
|
1462 }
|
|
|
1463
|
|
|
1464 return;
|
|
|
1465 }
|
|
|
1466
|
|
28
|
1467 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1468
|
|
|
1469 #if 0
|
|
|
1470
|
|
|
1471 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1472 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1473 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1474 ngx_close_file_n " \"%s\" failed",
|
|
|
1475 u->cache->ctx.file.name.data);
|
|
|
1476 }
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 if (u->cachable) {
|
|
130
|
1480 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1481
|
|
|
1482 header->expires = u->cache->ctx.expires;
|
|
|
1483 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1484 header->date = u->cache->ctx.date;
|
|
|
1485 header->length = r->headers_out.content_length_n;
|
|
|
1486 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1487
|
|
|
1488 header->key_len = u->cache->ctx.key0.len;
|
|
|
1489 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1490 header->key[header->key_len] = LF;
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 #endif
|
|
|
1494
|
|
130
|
1495 p = u->pipe;
|
|
28
|
1496
|
|
|
1497 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1498 p->output_ctx = r;
|
|
|
1499 p->tag = u->output.tag;
|
|
126
|
1500 p->bufs = u->conf->bufs;
|
|
28
|
1501 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1502 p->upstream = u->peer.connection;
|
|
132
|
1503 p->downstream = c;
|
|
28
|
1504 p->pool = r->pool;
|
|
132
|
1505 p->log = c->log;
|
|
126
|
1506
|
|
28
|
1507 p->cachable = u->cachable;
|
|
|
1508
|
|
50
|
1509 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1510 if (p->temp_file == NULL) {
|
|
28
|
1511 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1512 return;
|
|
|
1513 }
|
|
|
1514
|
|
|
1515 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1516 p->temp_file->file.log = c->log;
|
|
28
|
1517 p->temp_file->path = u->conf->temp_path;
|
|
|
1518 p->temp_file->pool = r->pool;
|
|
126
|
1519
|
|
28
|
1520 if (u->cachable) {
|
|
|
1521 p->temp_file->persistent = 1;
|
|
|
1522 } else {
|
|
216
|
1523 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1524 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1525 "to a temporary file";
|
|
|
1526 }
|
|
|
1527
|
|
|
1528 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1529 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1530
|
|
50
|
1531 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1532 if (p->preread_bufs == NULL) {
|
|
28
|
1533 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1534 return;
|
|
|
1535 }
|
|
130
|
1536 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1537 p->preread_bufs->next = NULL;
|
|
130
|
1538 u->buffer.recycled = 1;
|
|
|
1539
|
|
|
1540 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1541
|
|
|
1542 if (u->cachable) {
|
|
|
1543 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1544 if (p->buf_to_file == NULL) {
|
|
|
1545 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1546 return;
|
|
|
1547 }
|
|
130
|
1548 p->buf_to_file->pos = u->buffer.start;
|
|
|
1549 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1550 p->buf_to_file->temporary = 1;
|
|
|
1551 }
|
|
|
1552
|
|
|
1553 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1554 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1555 p->single_buf = 1;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1559 p->free_bufs = 1;
|
|
|
1560
|
|
|
1561 /*
|
|
130
|
1562 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1563 * as though these bytes were read
|
|
|
1564 */
|
|
130
|
1565 u->buffer.last = u->buffer.pos;
|
|
28
|
1566
|
|
|
1567 if (u->conf->cyclic_temp_file) {
|
|
|
1568
|
|
|
1569 /*
|
|
|
1570 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1571 * because the writing a new data may interfere with sendfile()
|
|
|
1572 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1573 */
|
|
|
1574
|
|
|
1575 p->cyclic_temp_file = 1;
|
|
132
|
1576 c->sendfile = 0;
|
|
28
|
1577
|
|
|
1578 } else {
|
|
|
1579 p->cyclic_temp_file = 0;
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 p->read_timeout = u->conf->read_timeout;
|
|
|
1583 p->send_timeout = clcf->send_timeout;
|
|
|
1584 p->send_lowat = clcf->send_lowat;
|
|
|
1585
|
|
58
|
1586 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1587 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1588
|
|
|
1589 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1590 }
|
|
|
1591
|
|
|
1592
|
|
36
|
1593 static void
|
|
130
|
1594 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1595 {
|
|
|
1596 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1597 }
|
|
|
1598
|
|
|
1599
|
|
|
1600 static void
|
|
|
1601 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1602 {
|
|
|
1603 size_t size;
|
|
|
1604 ssize_t n;
|
|
|
1605 ngx_buf_t *b;
|
|
132
|
1606 ngx_int_t rc;
|
|
130
|
1607 ngx_uint_t do_write;
|
|
132
|
1608 ngx_connection_t *c, *client;
|
|
130
|
1609 ngx_http_request_t *r;
|
|
|
1610 ngx_http_upstream_t *u;
|
|
|
1611 ngx_http_core_loc_conf_t *clcf;
|
|
|
1612
|
|
|
1613 c = ev->data;
|
|
244
|
1614 r = c->data;
|
|
|
1615 u = r->upstream;
|
|
130
|
1616
|
|
|
1617 if (ev->write) {
|
|
|
1618 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1619 "http upstream process non buffered downstream");
|
|
|
1620 c->log->action = "sending to client";
|
|
|
1621
|
|
|
1622 } else {
|
|
|
1623 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1624 "http upstream process non buffered upstream");
|
|
|
1625 c->log->action = "reading upstream";
|
|
|
1626 }
|
|
|
1627
|
|
|
1628 if (ev->timedout) {
|
|
|
1629 if (ev->write) {
|
|
|
1630 c->timedout = 1;
|
|
160
|
1631 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1632
|
|
130
|
1633 } else {
|
|
160
|
1634 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1635 }
|
|
244
|
1636
|
|
|
1637 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1638 return;
|
|
130
|
1639 }
|
|
|
1640
|
|
132
|
1641 client = r->connection;
|
|
130
|
1642
|
|
|
1643 b = &u->buffer;
|
|
|
1644
|
|
|
1645 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1646
|
|
206
|
1647 do_write = ev->write || u->length == 0;
|
|
130
|
1648
|
|
|
1649 for ( ;; ) {
|
|
|
1650
|
|
|
1651 if (do_write) {
|
|
|
1652
|
|
|
1653 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1654 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1655
|
|
|
1656 if (client->destroyed) {
|
|
|
1657 return;
|
|
|
1658 }
|
|
|
1659
|
|
|
1660 if (rc == NGX_ERROR) {
|
|
130
|
1661 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1662 return;
|
|
|
1663 }
|
|
|
1664
|
|
|
1665 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1666 &u->out_bufs, u->output.tag);
|
|
|
1667 }
|
|
|
1668
|
|
|
1669 if (u->busy_bufs == NULL) {
|
|
|
1670
|
|
|
1671 if (u->length == 0
|
|
|
1672 || u->peer.connection->read->eof
|
|
|
1673 || u->peer.connection->read->error)
|
|
|
1674 {
|
|
|
1675 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1676 return;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 b->pos = b->start;
|
|
|
1680 b->last = b->start;
|
|
|
1681 }
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 size = b->end - b->last;
|
|
|
1685
|
|
|
1686 if (size > u->length) {
|
|
|
1687 size = u->length;
|
|
|
1688 }
|
|
|
1689
|
|
|
1690 if (size && u->peer.connection->read->ready) {
|
|
206
|
1691
|
|
130
|
1692 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1693
|
|
|
1694 if (n == NGX_AGAIN) {
|
|
|
1695 break;
|
|
|
1696 }
|
|
|
1697
|
|
|
1698 if (n > 0) {
|
|
|
1699 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1700 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1701 return;
|
|
|
1702 }
|
|
|
1703 }
|
|
|
1704
|
|
|
1705 do_write = 1;
|
|
|
1706
|
|
|
1707 continue;
|
|
|
1708 }
|
|
|
1709
|
|
|
1710 break;
|
|
|
1711 }
|
|
|
1712
|
|
132
|
1713 if (client->data == r) {
|
|
|
1714 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1715 == NGX_ERROR)
|
|
|
1716 {
|
|
|
1717 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1718 return;
|
|
|
1719 }
|
|
130
|
1720 }
|
|
|
1721
|
|
132
|
1722 if (client->write->active) {
|
|
|
1723 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1724
|
|
|
1725 } else if (client->write->timer_set) {
|
|
|
1726 ngx_del_timer(client->write);
|
|
130
|
1727 }
|
|
|
1728
|
|
|
1729 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1730 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1731 return;
|
|
|
1732 }
|
|
|
1733
|
|
|
1734 if (u->peer.connection->read->active) {
|
|
|
1735 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1736
|
|
132
|
1737 } else if (u->peer.connection->read->timer_set) {
|
|
|
1738 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1739 }
|
|
|
1740 }
|
|
|
1741
|
|
|
1742
|
|
|
1743 static ngx_int_t
|
|
|
1744 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1745 {
|
|
|
1746 return NGX_OK;
|
|
|
1747 }
|
|
|
1748
|
|
|
1749
|
|
|
1750 static ngx_int_t
|
|
|
1751 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1752 {
|
|
|
1753 ngx_http_request_t *r = data;
|
|
|
1754
|
|
|
1755 ngx_buf_t *b;
|
|
|
1756 ngx_chain_t *cl, **ll;
|
|
|
1757 ngx_http_upstream_t *u;
|
|
|
1758
|
|
|
1759 u = r->upstream;
|
|
|
1760
|
|
|
1761 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1762 ll = &cl->next;
|
|
|
1763 }
|
|
|
1764
|
|
|
1765 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1766 if (cl == NULL) {
|
|
|
1767 return NGX_ERROR;
|
|
|
1768 }
|
|
|
1769
|
|
|
1770 *ll = cl;
|
|
|
1771
|
|
|
1772 cl->buf->flush = 1;
|
|
|
1773 cl->buf->memory = 1;
|
|
|
1774
|
|
|
1775 b = &u->buffer;
|
|
|
1776
|
|
|
1777 cl->buf->pos = b->last;
|
|
|
1778 b->last += bytes;
|
|
|
1779 cl->buf->last = b->last;
|
|
|
1780
|
|
|
1781 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1782 return NGX_OK;
|
|
|
1783 }
|
|
|
1784
|
|
|
1785 u->length -= bytes;
|
|
|
1786
|
|
|
1787 return NGX_OK;
|
|
|
1788 }
|
|
|
1789
|
|
|
1790
|
|
|
1791 static void
|
|
58
|
1792 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1793 {
|
|
|
1794 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1795 }
|
|
|
1796
|
|
|
1797
|
|
|
1798 static void
|
|
36
|
1799 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1800 {
|
|
58
|
1801 ngx_event_pipe_t *p;
|
|
132
|
1802 ngx_connection_t *c, *downstream;
|
|
28
|
1803 ngx_http_request_t *r;
|
|
|
1804 ngx_http_upstream_t *u;
|
|
|
1805
|
|
|
1806 c = ev->data;
|
|
|
1807 r = c->data;
|
|
|
1808 u = r->upstream;
|
|
132
|
1809 downstream = r->connection;
|
|
28
|
1810
|
|
|
1811 if (ev->write) {
|
|
32
|
1812 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1813 "http upstream process downstream");
|
|
|
1814 c->log->action = "sending to client";
|
|
126
|
1815
|
|
28
|
1816 } else {
|
|
32
|
1817 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1818 "http upstream process upstream");
|
|
|
1819 c->log->action = "reading upstream";
|
|
28
|
1820 }
|
|
126
|
1821
|
|
130
|
1822 p = u->pipe;
|
|
28
|
1823
|
|
|
1824 if (ev->timedout) {
|
|
|
1825 if (ev->write) {
|
|
76
|
1826 if (ev->delayed) {
|
|
|
1827
|
|
|
1828 ev->timedout = 0;
|
|
|
1829 ev->delayed = 0;
|
|
|
1830
|
|
|
1831 if (!ev->ready) {
|
|
|
1832 ngx_add_timer(ev, p->send_timeout);
|
|
|
1833
|
|
|
1834 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1835 {
|
|
|
1836 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1837 return;
|
|
|
1838 }
|
|
|
1839
|
|
|
1840 return;
|
|
|
1841 }
|
|
|
1842
|
|
|
1843 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1844
|
|
|
1845 if (downstream->destroyed) {
|
|
|
1846 return;
|
|
|
1847 }
|
|
|
1848
|
|
76
|
1849 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1850 return;
|
|
|
1851 }
|
|
|
1852
|
|
|
1853 } else {
|
|
|
1854 p->downstream_error = 1;
|
|
126
|
1855 c->timedout = 1;
|
|
160
|
1856 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1857 }
|
|
28
|
1858
|
|
|
1859 } else {
|
|
126
|
1860 p->upstream_error = 1;
|
|
160
|
1861 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1862 }
|
|
|
1863
|
|
|
1864 } else {
|
|
76
|
1865 if (ev->write && ev->delayed) {
|
|
|
1866 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1867 "http downstream delayed");
|
|
|
1868
|
|
|
1869 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1870 return;
|
|
|
1871 }
|
|
|
1872
|
|
|
1873 return;
|
|
|
1874 }
|
|
|
1875
|
|
28
|
1876 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1877
|
|
|
1878 if (downstream->destroyed) {
|
|
|
1879 return;
|
|
|
1880 }
|
|
|
1881
|
|
28
|
1882 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1883 return;
|
|
|
1884 }
|
|
|
1885 }
|
|
126
|
1886
|
|
28
|
1887 if (u->peer.connection) {
|
|
|
1888
|
|
|
1889 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1890
|
|
|
1891 if (p->upstream_done && u->cachable) {
|
|
|
1892 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1893 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1894 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1895 return;
|
|
|
1896 }
|
|
|
1897
|
|
|
1898 } else if (p->upstream_eof && u->cachable) {
|
|
|
1899
|
|
|
1900 /* TODO: check length & update cache */
|
|
|
1901
|
|
|
1902 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1903 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1904 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1905 return;
|
|
|
1906 }
|
|
|
1907 }
|
|
|
1908
|
|
|
1909 #endif
|
|
|
1910
|
|
|
1911 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1912 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1913 "http upstream exit: %p", p->out);
|
|
28
|
1914 #if 0
|
|
|
1915 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1916 #endif
|
|
|
1917 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1918 return;
|
|
|
1919 }
|
|
|
1920 }
|
|
|
1921
|
|
|
1922 if (p->downstream_error) {
|
|
32
|
1923 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1924 "http upstream downstream error");
|
|
28
|
1925
|
|
|
1926 if (!u->cachable && u->peer.connection) {
|
|
|
1927 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1928 }
|
|
|
1929 }
|
|
|
1930 }
|
|
|
1931
|
|
|
1932
|
|
36
|
1933 static void
|
|
|
1934 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1935 {
|
|
|
1936 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1937 "http upstream dummy handler");
|
|
|
1938 }
|
|
|
1939
|
|
|
1940
|
|
36
|
1941 static void
|
|
|
1942 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1943 ngx_uint_t ft_type)
|
|
28
|
1944 {
|
|
74
|
1945 ngx_uint_t status, down;
|
|
28
|
1946
|
|
|
1947 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1948 "http next upstream, %xD", ft_type);
|
|
|
1949
|
|
|
1950 #if 0
|
|
|
1951 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1952 #endif
|
|
|
1953
|
|
74
|
1954 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1955 down = 0;
|
|
|
1956 } else {
|
|
|
1957 down = 1;
|
|
28
|
1958 }
|
|
74
|
1959
|
|
|
1960 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1961
|
|
28
|
1962 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1963 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1964 "upstream timed out");
|
|
|
1965 }
|
|
126
|
1966
|
|
28
|
1967 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1968 status = 0;
|
|
|
1969
|
|
|
1970 } else {
|
|
|
1971 switch(ft_type) {
|
|
|
1972
|
|
|
1973 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1974 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1975 break;
|
|
|
1976
|
|
|
1977 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1978 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1979 break;
|
|
|
1980
|
|
|
1981 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1982 status = NGX_HTTP_NOT_FOUND;
|
|
|
1983 break;
|
|
|
1984
|
|
|
1985 /*
|
|
|
1986 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1987 * never reach here
|
|
|
1988 */
|
|
|
1989
|
|
|
1990 default:
|
|
|
1991 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1992 }
|
|
|
1993 }
|
|
|
1994
|
|
132
|
1995 if (r->connection->error) {
|
|
28
|
1996 ngx_http_upstream_finalize_request(r, u,
|
|
|
1997 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1998 return;
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 if (status) {
|
|
|
2002 u->state->status = status;
|
|
|
2003
|
|
74
|
2004 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2005
|
|
|
2006 #if (NGX_HTTP_CACHE)
|
|
|
2007
|
|
|
2008 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2009 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2010 ngx_http_send_cached_response(r));
|
|
28
|
2011 return;
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 #endif
|
|
|
2015
|
|
|
2016 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2017 return;
|
|
|
2018 }
|
|
|
2019 }
|
|
|
2020
|
|
|
2021 if (u->peer.connection) {
|
|
|
2022 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2023 "close http upstream connection: %d",
|
|
|
2024 u->peer.connection->fd);
|
|
126
|
2025 #if (NGX_HTTP_SSL)
|
|
|
2026 if (u->peer.connection->ssl) {
|
|
|
2027 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
2028 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
2029 }
|
|
|
2030 #endif
|
|
28
|
2031 ngx_close_connection(u->peer.connection);
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 #if 0
|
|
|
2035 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2036 ngx_http_upstream_busy_lock(p);
|
|
|
2037 return;
|
|
|
2038 }
|
|
|
2039 #endif
|
|
|
2040
|
|
|
2041 ngx_http_upstream_connect(r, u);
|
|
|
2042 }
|
|
|
2043
|
|
|
2044
|
|
36
|
2045 static void
|
|
118
|
2046 ngx_http_upstream_cleanup(void *data)
|
|
|
2047 {
|
|
|
2048 ngx_http_request_t *r = data;
|
|
|
2049
|
|
|
2050 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2051 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2052
|
|
|
2053 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2054 }
|
|
|
2055
|
|
|
2056
|
|
|
2057 static void
|
|
36
|
2058 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2059 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2060 {
|
|
258
|
2061 ngx_time_t *tp;
|
|
|
2062 ngx_msec_int_t ms;
|
|
112
|
2063
|
|
32
|
2064 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2065 "finalize http upstream request: %i", rc);
|
|
28
|
2066
|
|
118
|
2067 *u->cleanup = NULL;
|
|
|
2068
|
|
112
|
2069 if (u->state->response_time) {
|
|
|
2070 tp = ngx_timeofday();
|
|
258
|
2071 ms = tp->sec * 1000 + tp->msec - u->state->response_time;
|
|
|
2072 u->state->response_time = (ms >= 0) ? ms : 0;
|
|
112
|
2073 }
|
|
|
2074
|
|
28
|
2075 u->finalize_request(r, rc);
|
|
|
2076
|
|
|
2077 if (u->peer.connection) {
|
|
|
2078 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2079 "close http upstream connection: %d",
|
|
|
2080 u->peer.connection->fd);
|
|
126
|
2081 #if (NGX_HTTP_SSL)
|
|
|
2082
|
|
|
2083 /* TODO: do not shutdown persistent connection */
|
|
|
2084
|
|
|
2085 if (u->peer.connection->ssl) {
|
|
|
2086 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
2087 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
2088 }
|
|
|
2089 #endif
|
|
28
|
2090 ngx_close_connection(u->peer.connection);
|
|
|
2091 }
|
|
|
2092
|
|
32
|
2093 u->peer.connection = NULL;
|
|
|
2094
|
|
112
|
2095 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2096 {
|
|
|
2097 rc = 0;
|
|
|
2098 }
|
|
|
2099
|
|
130
|
2100 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2101 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2102 "http upstream temp fd: %d",
|
|
130
|
2103 u->pipe->temp_file->file.fd);
|
|
28
|
2104 }
|
|
|
2105
|
|
|
2106 #if 0
|
|
|
2107 if (u->cache) {
|
|
|
2108 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2109 "http upstream cache fd: %d",
|
|
28
|
2110 u->cache->ctx.file.fd);
|
|
|
2111 }
|
|
|
2112 #endif
|
|
|
2113
|
|
64
|
2114 if (rc == NGX_DECLINED) {
|
|
|
2115 return;
|
|
|
2116 }
|
|
|
2117
|
|
32
|
2118 r->connection->log->action = "sending to client";
|
|
|
2119
|
|
178
|
2120 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2121 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2122 }
|
|
|
2123
|
|
|
2124 ngx_http_finalize_request(r, rc);
|
|
|
2125 }
|
|
|
2126
|
|
|
2127
|
|
126
|
2128 #if (NGX_HTTP_SSL)
|
|
|
2129
|
|
|
2130 static void
|
|
|
2131 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
2132 {
|
|
|
2133 /* lock peer mutex */
|
|
|
2134
|
|
|
2135 if (peer->ssl_session) {
|
|
|
2136 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2137 }
|
|
|
2138
|
|
|
2139 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2140
|
|
|
2141 /* unlock peer mutex */
|
|
|
2142
|
|
|
2143 /*
|
|
|
2144 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2145 * and do not wait its "close notify" shutdown alert.
|
|
|
2146 * It is acceptable according to the TLS standard.
|
|
|
2147 */
|
|
|
2148
|
|
|
2149 c->ssl->no_wait_shutdown = 1;
|
|
|
2150
|
|
|
2151 (void) ngx_ssl_shutdown(c);
|
|
|
2152 }
|
|
|
2153
|
|
|
2154 #endif
|
|
|
2155
|
|
|
2156
|
|
58
|
2157 static ngx_int_t
|
|
|
2158 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2159 ngx_uint_t offset)
|
|
126
|
2160 {
|
|
58
|
2161 ngx_table_elt_t **ph;
|
|
126
|
2162
|
|
58
|
2163 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2164
|
|
|
2165 if (*ph == NULL) {
|
|
|
2166 *ph = h;
|
|
|
2167 }
|
|
|
2168
|
|
|
2169 return NGX_OK;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172
|
|
|
2173 static ngx_int_t
|
|
|
2174 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2175 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2176 {
|
|
|
2177 ngx_array_t *pa;
|
|
|
2178 ngx_table_elt_t **ph;
|
|
|
2179
|
|
|
2180 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2181
|
|
|
2182 if (pa->elts == NULL) {
|
|
|
2183 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2184 {
|
|
|
2185 return NGX_ERROR;
|
|
|
2186 }
|
|
|
2187 }
|
|
|
2188
|
|
|
2189 ph = ngx_array_push(pa);
|
|
|
2190 if (ph == NULL) {
|
|
|
2191 return NGX_ERROR;
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 *ph = h;
|
|
|
2195
|
|
|
2196 return NGX_OK;
|
|
|
2197 }
|
|
|
2198
|
|
|
2199
|
|
|
2200 static ngx_int_t
|
|
|
2201 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2202 ngx_uint_t offset)
|
|
|
2203 {
|
|
|
2204 return NGX_OK;
|
|
|
2205 }
|
|
|
2206
|
|
|
2207
|
|
|
2208 static ngx_int_t
|
|
76
|
2209 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2210 ngx_uint_t offset)
|
|
126
|
2211 {
|
|
76
|
2212 ngx_int_t n;
|
|
|
2213
|
|
|
2214 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2215
|
|
|
2216 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2217
|
|
|
2218 if (n != NGX_ERROR) {
|
|
|
2219 r->limit_rate = (size_t) n;
|
|
|
2220 }
|
|
|
2221
|
|
|
2222 return NGX_OK;
|
|
|
2223 }
|
|
|
2224
|
|
|
2225
|
|
|
2226 static ngx_int_t
|
|
198
|
2227 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2228 ngx_uint_t offset)
|
|
|
2229 {
|
|
|
2230 u_char c0, c1, c2;
|
|
|
2231
|
|
|
2232 if (r->upstream->conf->change_buffering) {
|
|
|
2233
|
|
|
2234 if (h->value.len == 2) {
|
|
|
2235 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2236 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2237
|
|
|
2238 if (c0 == 'n' && c1 == 'o') {
|
|
|
2239 r->upstream->buffering = 0;
|
|
|
2240 }
|
|
|
2241
|
|
|
2242 } else if (h->value.len == 3) {
|
|
|
2243 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2244 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2245 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2246
|
|
|
2247 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2248 r->upstream->buffering = 1;
|
|
|
2249 }
|
|
|
2250 }
|
|
|
2251 }
|
|
|
2252
|
|
|
2253 return NGX_OK;
|
|
|
2254 }
|
|
|
2255
|
|
|
2256
|
|
|
2257 static ngx_int_t
|
|
206
|
2258 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2259 ngx_uint_t offset)
|
|
|
2260 {
|
|
|
2261 r->headers_out.override_charset = &h->value;
|
|
|
2262
|
|
|
2263 return NGX_OK;
|
|
|
2264 }
|
|
|
2265
|
|
|
2266
|
|
|
2267 static ngx_int_t
|
|
58
|
2268 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2269 ngx_uint_t offset)
|
|
|
2270 {
|
|
122
|
2271 ngx_table_elt_t *ho, **ph;
|
|
58
|
2272
|
|
|
2273 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2274 if (ho == NULL) {
|
|
|
2275 return NGX_ERROR;
|
|
|
2276 }
|
|
|
2277
|
|
|
2278 *ho = *h;
|
|
|
2279
|
|
122
|
2280 if (offset) {
|
|
|
2281 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2282 *ph = ho;
|
|
|
2283 }
|
|
|
2284
|
|
58
|
2285 return NGX_OK;
|
|
|
2286 }
|
|
|
2287
|
|
|
2288
|
|
|
2289 static ngx_int_t
|
|
|
2290 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2291 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2292 {
|
|
|
2293 ngx_array_t *pa;
|
|
|
2294 ngx_table_elt_t *ho, **ph;
|
|
|
2295
|
|
|
2296 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2297
|
|
|
2298 if (pa->elts == NULL) {
|
|
|
2299 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2300 {
|
|
|
2301 return NGX_ERROR;
|
|
|
2302 }
|
|
|
2303 }
|
|
|
2304
|
|
|
2305 ph = ngx_array_push(pa);
|
|
|
2306 if (ph == NULL) {
|
|
|
2307 return NGX_ERROR;
|
|
|
2308 }
|
|
|
2309
|
|
|
2310 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2311 if (ho == NULL) {
|
|
|
2312 return NGX_ERROR;
|
|
|
2313 }
|
|
|
2314
|
|
|
2315 *ho = *h;
|
|
|
2316 *ph = ho;
|
|
|
2317
|
|
|
2318 return NGX_OK;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321
|
|
|
2322 static ngx_int_t
|
|
|
2323 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2324 ngx_uint_t offset)
|
|
|
2325 {
|
|
206
|
2326 u_char *p, *last;
|
|
|
2327
|
|
|
2328 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2329 r->headers_out.content_type = h->value;
|
|
|
2330
|
|
206
|
2331 for (p = h->value.data; *p; p++) {
|
|
|
2332
|
|
|
2333 if (*p != ';') {
|
|
|
2334 continue;
|
|
|
2335 }
|
|
|
2336
|
|
|
2337 last = p;
|
|
|
2338
|
|
|
2339 while (*++p == ' ') { /* void */ }
|
|
|
2340
|
|
|
2341 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
|
2342 continue;
|
|
|
2343 }
|
|
|
2344
|
|
|
2345 p += 8;
|
|
|
2346
|
|
|
2347 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2348
|
|
|
2349 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2350 r->headers_out.charset.data = p;
|
|
|
2351 }
|
|
|
2352
|
|
58
|
2353 return NGX_OK;
|
|
|
2354 }
|
|
|
2355
|
|
|
2356
|
|
|
2357 static ngx_int_t
|
|
|
2358 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2359 ngx_uint_t offset)
|
|
|
2360 {
|
|
|
2361 ngx_table_elt_t *ho;
|
|
|
2362
|
|
|
2363 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2364 if (ho == NULL) {
|
|
|
2365 return NGX_ERROR;
|
|
|
2366 }
|
|
|
2367
|
|
|
2368 *ho = *h;
|
|
|
2369
|
|
|
2370 r->headers_out.content_length = ho;
|
|
|
2371 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2372
|
|
|
2373 return NGX_OK;
|
|
|
2374 }
|
|
|
2375
|
|
|
2376
|
|
|
2377 static ngx_int_t
|
|
|
2378 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2379 ngx_uint_t offset)
|
|
|
2380 {
|
|
|
2381 ngx_int_t rc;
|
|
|
2382 ngx_table_elt_t *ho;
|
|
|
2383
|
|
|
2384 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2385 if (ho == NULL) {
|
|
|
2386 return NGX_ERROR;
|
|
|
2387 }
|
|
|
2388
|
|
|
2389 *ho = *h;
|
|
|
2390
|
|
|
2391 if (r->upstream->rewrite_redirect) {
|
|
|
2392 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2393
|
|
78
|
2394 if (rc == NGX_DECLINED) {
|
|
|
2395 return NGX_OK;
|
|
|
2396 }
|
|
|
2397
|
|
58
|
2398 if (rc == NGX_OK) {
|
|
|
2399 r->headers_out.location = ho;
|
|
|
2400
|
|
|
2401 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2402 "rewritten location: \"%V\"", &ho->value);
|
|
|
2403 }
|
|
|
2404
|
|
|
2405 return rc;
|
|
|
2406 }
|
|
|
2407
|
|
|
2408 /*
|
|
|
2409 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2410 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2411 */
|
|
|
2412
|
|
|
2413 return NGX_OK;
|
|
|
2414 }
|
|
|
2415
|
|
|
2416
|
|
|
2417 static ngx_int_t
|
|
|
2418 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2419 ngx_uint_t offset)
|
|
|
2420 {
|
|
|
2421 u_char *p;
|
|
|
2422 ngx_int_t rc;
|
|
|
2423 ngx_table_elt_t *ho;
|
|
|
2424
|
|
|
2425 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2426 if (ho == NULL) {
|
|
|
2427 return NGX_ERROR;
|
|
|
2428 }
|
|
|
2429
|
|
|
2430 *ho = *h;
|
|
|
2431
|
|
|
2432 if (r->upstream->rewrite_redirect) {
|
|
|
2433
|
|
|
2434 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2435
|
|
|
2436 if (p) {
|
|
|
2437 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2438
|
|
|
2439 } else {
|
|
|
2440 return NGX_OK;
|
|
|
2441 }
|
|
|
2442
|
|
78
|
2443 if (rc == NGX_DECLINED) {
|
|
|
2444 return NGX_OK;
|
|
|
2445 }
|
|
|
2446
|
|
58
|
2447 #if (NGX_DEBUG)
|
|
|
2448 if (rc == NGX_OK) {
|
|
|
2449 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2450 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2451 }
|
|
|
2452 #endif
|
|
|
2453
|
|
|
2454 return rc;
|
|
|
2455 }
|
|
|
2456
|
|
|
2457 return NGX_OK;
|
|
|
2458 }
|
|
|
2459
|
|
|
2460
|
|
|
2461 #if (NGX_HTTP_GZIP)
|
|
|
2462
|
|
|
2463 static ngx_int_t
|
|
|
2464 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2465 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2466 {
|
|
|
2467 ngx_table_elt_t *ho;
|
|
|
2468
|
|
|
2469 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2470 if (ho == NULL) {
|
|
|
2471 return NGX_ERROR;
|
|
|
2472 }
|
|
|
2473
|
|
|
2474 *ho = *h;
|
|
|
2475
|
|
|
2476 r->headers_out.content_encoding = ho;
|
|
|
2477
|
|
|
2478 return NGX_OK;
|
|
|
2479 }
|
|
|
2480
|
|
|
2481 #endif
|
|
|
2482
|
|
|
2483
|
|
36
|
2484 static size_t
|
|
|
2485 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2486 {
|
|
|
2487 if (r->upstream) {
|
|
|
2488 return r->upstream->states.nelts * (3 + 2);
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 return 1;
|
|
|
2492 }
|
|
|
2493
|
|
|
2494
|
|
36
|
2495 static u_char *
|
|
|
2496 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2497 ngx_http_log_op_t *op)
|
|
28
|
2498 {
|
|
|
2499 ngx_uint_t i;
|
|
|
2500 ngx_http_upstream_t *u;
|
|
|
2501 ngx_http_upstream_state_t *state;
|
|
|
2502
|
|
|
2503 u = r->upstream;
|
|
|
2504
|
|
122
|
2505 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2506 *buf = '-';
|
|
|
2507 return buf + 1;
|
|
|
2508 }
|
|
|
2509
|
|
|
2510 i = 0;
|
|
|
2511 state = u->states.elts;
|
|
|
2512
|
|
|
2513 for ( ;; ) {
|
|
|
2514 if (state[i].status == 0) {
|
|
|
2515 *buf++ = '-';
|
|
|
2516
|
|
|
2517 } else {
|
|
|
2518 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2519 }
|
|
|
2520
|
|
|
2521 if (++i == u->states.nelts) {
|
|
|
2522 return buf;
|
|
|
2523 }
|
|
|
2524
|
|
|
2525 *buf++ = ',';
|
|
|
2526 *buf++ = ' ';
|
|
|
2527 }
|
|
|
2528 }
|
|
|
2529
|
|
|
2530
|
|
122
|
2531 static size_t
|
|
|
2532 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2533 uintptr_t data)
|
|
|
2534 {
|
|
|
2535 if (r->upstream) {
|
|
|
2536 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2537 }
|
|
|
2538
|
|
|
2539 return 1;
|
|
|
2540 }
|
|
|
2541
|
|
|
2542
|
|
58
|
2543 static u_char *
|
|
112
|
2544 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2545 ngx_http_log_op_t *op)
|
|
|
2546 {
|
|
|
2547 ngx_uint_t i;
|
|
|
2548 ngx_http_upstream_t *u;
|
|
|
2549 ngx_http_upstream_state_t *state;
|
|
|
2550
|
|
|
2551 u = r->upstream;
|
|
|
2552
|
|
122
|
2553 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2554 *buf = '-';
|
|
|
2555 return buf + 1;
|
|
|
2556 }
|
|
|
2557
|
|
|
2558 i = 0;
|
|
|
2559 state = u->states.elts;
|
|
|
2560
|
|
|
2561 for ( ;; ) {
|
|
|
2562 if (state[i].status == 0) {
|
|
|
2563 *buf++ = '-';
|
|
|
2564
|
|
|
2565 } else {
|
|
|
2566 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2567 state[i].response_time / 1000,
|
|
|
2568 state[i].response_time % 1000);
|
|
|
2569 }
|
|
|
2570
|
|
|
2571 if (++i == u->states.nelts) {
|
|
|
2572 return buf;
|
|
|
2573 }
|
|
|
2574
|
|
|
2575 *buf++ = ',';
|
|
|
2576 *buf++ = ' ';
|
|
|
2577 }
|
|
|
2578 }
|
|
|
2579
|
|
|
2580
|
|
36
|
2581 static ngx_int_t
|
|
122
|
2582 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2583 {
|
|
122
|
2584 ngx_http_variable_t *var, *v;
|
|
28
|
2585 ngx_http_log_op_name_t *op;
|
|
|
2586
|
|
122
|
2587 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2588 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2589 if (var == NULL) {
|
|
|
2590 return NGX_ERROR;
|
|
|
2591 }
|
|
|
2592
|
|
186
|
2593 var->get_handler = v->get_handler;
|
|
122
|
2594 var->data = v->data;
|
|
|
2595 }
|
|
|
2596
|
|
28
|
2597 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2598 op->run = NULL;
|
|
|
2599
|
|
|
2600 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2601 if (op->name.len == 0) {
|
|
|
2602 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2603 }
|
|
|
2604 }
|
|
|
2605
|
|
|
2606 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2607
|
|
|
2608 return NGX_OK;
|
|
|
2609 }
|
|
58
|
2610
|
|
|
2611
|
|
122
|
2612 static ngx_int_t
|
|
|
2613 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2614 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2615 {
|
|
|
2616 u_char *p;
|
|
|
2617 size_t len;
|
|
|
2618 ngx_uint_t i;
|
|
|
2619 ngx_http_upstream_t *u;
|
|
|
2620 ngx_http_upstream_state_t *state;
|
|
|
2621
|
|
|
2622 v->valid = 1;
|
|
|
2623 v->no_cachable = 0;
|
|
|
2624 v->not_found = 0;
|
|
|
2625
|
|
|
2626 u = r->upstream;
|
|
|
2627
|
|
|
2628 if (u == NULL || u->states.nelts == 0) {
|
|
|
2629 v->not_found = 1;
|
|
|
2630 return NGX_OK;
|
|
|
2631 }
|
|
|
2632
|
|
|
2633 len = u->states.nelts * (3 + 2);
|
|
|
2634
|
|
|
2635 p = ngx_palloc(r->pool, len);
|
|
|
2636 if (p == NULL) {
|
|
|
2637 return NGX_ERROR;
|
|
|
2638 }
|
|
|
2639
|
|
|
2640 v->data = p;
|
|
|
2641
|
|
|
2642 i = 0;
|
|
|
2643 state = u->states.elts;
|
|
|
2644
|
|
|
2645 for ( ;; ) {
|
|
|
2646 if (state[i].status == 0) {
|
|
|
2647 *p++ = '-';
|
|
|
2648
|
|
|
2649 } else {
|
|
|
2650 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2651 }
|
|
|
2652
|
|
|
2653 if (++i == u->states.nelts) {
|
|
|
2654 break;
|
|
|
2655 }
|
|
|
2656
|
|
|
2657 *p++ = ',';
|
|
|
2658 *p++ = ' ';
|
|
|
2659 }
|
|
|
2660
|
|
|
2661 v->len = p - v->data;
|
|
|
2662
|
|
|
2663 return NGX_OK;
|
|
|
2664 }
|
|
|
2665
|
|
|
2666
|
|
|
2667 static ngx_int_t
|
|
|
2668 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2669 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2670 {
|
|
|
2671 u_char *p;
|
|
|
2672 size_t len;
|
|
|
2673 ngx_uint_t i;
|
|
|
2674 ngx_http_upstream_t *u;
|
|
|
2675 ngx_http_upstream_state_t *state;
|
|
|
2676
|
|
|
2677 v->valid = 1;
|
|
|
2678 v->no_cachable = 0;
|
|
|
2679 v->not_found = 0;
|
|
|
2680
|
|
|
2681 u = r->upstream;
|
|
|
2682
|
|
|
2683 if (u == NULL || u->states.nelts == 0) {
|
|
|
2684 v->not_found = 1;
|
|
|
2685 return NGX_OK;
|
|
|
2686 }
|
|
|
2687
|
|
|
2688 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2689
|
|
|
2690 p = ngx_palloc(r->pool, len);
|
|
|
2691 if (p == NULL) {
|
|
|
2692 return NGX_ERROR;
|
|
|
2693 }
|
|
|
2694
|
|
|
2695 v->data = p;
|
|
|
2696
|
|
|
2697 i = 0;
|
|
|
2698 state = u->states.elts;
|
|
|
2699
|
|
|
2700 for ( ;; ) {
|
|
|
2701 if (state[i].status == 0) {
|
|
|
2702 *p++ = '-';
|
|
|
2703
|
|
|
2704 } else {
|
|
|
2705 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2706 state[i].response_time / 1000,
|
|
|
2707 state[i].response_time % 1000);
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 if (++i == u->states.nelts) {
|
|
|
2711 break;
|
|
|
2712 }
|
|
|
2713
|
|
|
2714 *p++ = ',';
|
|
|
2715 *p++ = ' ';
|
|
|
2716 }
|
|
|
2717
|
|
|
2718 v->len = p - v->data;
|
|
|
2719
|
|
|
2720 return NGX_OK;
|
|
|
2721 }
|
|
|
2722
|
|
|
2723
|
|
200
|
2724 static char *
|
|
|
2725 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2726 {
|
|
|
2727 char *rv;
|
|
|
2728 void *mconf;
|
|
|
2729 ngx_str_t *value;
|
|
|
2730 ngx_url_t u;
|
|
|
2731 ngx_uint_t i, j, m, n;
|
|
|
2732 ngx_conf_t pcf;
|
|
|
2733 ngx_peers_t **peers;
|
|
|
2734 ngx_http_module_t *module;
|
|
|
2735 ngx_http_conf_ctx_t *ctx;
|
|
|
2736 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2737
|
|
|
2738 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2739 if (ctx == NULL) {
|
|
|
2740 return NGX_CONF_ERROR;
|
|
|
2741 }
|
|
|
2742
|
|
|
2743 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2744
|
|
|
2745 value = cf->args->elts;
|
|
|
2746 u.host = value[1];
|
|
|
2747
|
|
|
2748 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2749 if (uscf == NULL) {
|
|
|
2750 return NGX_CONF_ERROR;
|
|
|
2751 }
|
|
|
2752
|
|
|
2753 /* the upstream{}'s srv_conf */
|
|
|
2754
|
|
|
2755 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2756 if (ctx->srv_conf == NULL) {
|
|
|
2757 return NGX_CONF_ERROR;
|
|
|
2758 }
|
|
|
2759
|
|
|
2760 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2761
|
|
|
2762
|
|
|
2763 /* the upstream{}'s loc_conf */
|
|
|
2764
|
|
|
2765 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2766 if (ctx->loc_conf == NULL) {
|
|
|
2767 return NGX_CONF_ERROR;
|
|
|
2768 }
|
|
|
2769
|
|
|
2770 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2771 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2772 continue;
|
|
|
2773 }
|
|
|
2774
|
|
|
2775 module = ngx_modules[m]->ctx;
|
|
|
2776
|
|
|
2777 if (module->create_loc_conf) {
|
|
|
2778 mconf = module->create_loc_conf(cf);
|
|
|
2779 if (mconf == NULL) {
|
|
|
2780 return NGX_CONF_ERROR;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2784 }
|
|
|
2785 }
|
|
|
2786
|
|
|
2787
|
|
|
2788 /* parse inside upstream{} */
|
|
|
2789
|
|
|
2790 pcf = *cf;
|
|
|
2791 cf->ctx = ctx;
|
|
|
2792 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2793
|
|
|
2794 rv = ngx_conf_parse(cf, NULL);
|
|
|
2795
|
|
|
2796 *cf = pcf;
|
|
|
2797
|
|
|
2798 if (rv != NGX_CONF_OK) {
|
|
|
2799 return rv;
|
|
|
2800 }
|
|
|
2801
|
|
|
2802 if (uscf->servers == NULL) {
|
|
|
2803 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2804 "no servers are inside upstream");
|
|
|
2805 return NGX_CONF_ERROR;
|
|
|
2806 }
|
|
|
2807
|
|
|
2808 peers = uscf->servers->elts;
|
|
|
2809
|
|
|
2810 if (uscf->servers->nelts == 1) {
|
|
|
2811 uscf->peers = peers[0];
|
|
|
2812 }
|
|
|
2813
|
|
|
2814 n = 0;
|
|
|
2815
|
|
|
2816 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2817 n += peers[i]->number;
|
|
|
2818 }
|
|
|
2819
|
|
|
2820 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2821 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2822 if (uscf->peers == NULL) {
|
|
|
2823 return NGX_CONF_ERROR;
|
|
|
2824 }
|
|
|
2825
|
|
|
2826 uscf->peers->number = n;
|
|
|
2827
|
|
|
2828 n = 0;
|
|
|
2829
|
|
|
2830 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2831 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2832 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2833 }
|
|
|
2834 }
|
|
|
2835
|
|
|
2836 return rv;
|
|
|
2837 }
|
|
|
2838
|
|
|
2839
|
|
|
2840 static char *
|
|
|
2841 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2842 {
|
|
|
2843 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2844
|
|
|
2845 ngx_str_t *value;
|
|
|
2846 ngx_url_t u;
|
|
212
|
2847 ngx_int_t weight;
|
|
|
2848 ngx_uint_t i;
|
|
200
|
2849 ngx_peers_t **peers;
|
|
|
2850
|
|
|
2851 if (uscf->servers == NULL) {
|
|
|
2852 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2853 if (uscf->servers == NULL) {
|
|
|
2854 return NGX_CONF_ERROR;
|
|
|
2855 }
|
|
|
2856 }
|
|
|
2857
|
|
|
2858 peers = ngx_array_push(uscf->servers);
|
|
|
2859 if (peers == NULL) {
|
|
|
2860 return NGX_CONF_ERROR;
|
|
|
2861 }
|
|
|
2862
|
|
|
2863 value = cf->args->elts;
|
|
|
2864
|
|
|
2865 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2866
|
|
|
2867 u.url = value[1];
|
|
|
2868 u.default_portn = 80;
|
|
|
2869
|
|
|
2870 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2871 if (u.err) {
|
|
|
2872 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2873 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2874 }
|
|
|
2875
|
|
|
2876 return NGX_CONF_ERROR;
|
|
|
2877 }
|
|
|
2878
|
|
212
|
2879 weight = 1;
|
|
|
2880
|
|
|
2881 if (cf->args->nelts == 3) {
|
|
|
2882
|
|
|
2883 value = &value[2];
|
|
|
2884
|
|
|
2885 if (ngx_strncmp(value->data, "weight=", 7) == 0) {
|
|
|
2886
|
|
|
2887 weight = ngx_atoi(&value->data[7], value->len - 7);
|
|
|
2888
|
|
|
2889 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2890 goto invalid;
|
|
|
2891 }
|
|
|
2892
|
|
|
2893 } else {
|
|
|
2894 goto invalid;
|
|
|
2895 }
|
|
|
2896 }
|
|
|
2897
|
|
|
2898 for (i = 0; i < u.peers->number; i++) {
|
|
|
2899 u.peers->peer[i].weight = weight;
|
|
|
2900 u.peers->peer[i].current_weight = weight;
|
|
|
2901 u.peers->peer[i].max_fails = NGX_CONF_UNSET_UINT;
|
|
|
2902 u.peers->peer[i].fail_timeout = NGX_CONF_UNSET;
|
|
|
2903 }
|
|
|
2904
|
|
200
|
2905 *peers = u.peers;
|
|
|
2906
|
|
|
2907 return NGX_CONF_OK;
|
|
212
|
2908
|
|
|
2909 invalid:
|
|
|
2910
|
|
|
2911 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "invalid parameter \"%V\"", value);
|
|
|
2912
|
|
|
2913 return NGX_CONF_ERROR;
|
|
200
|
2914 }
|
|
|
2915
|
|
|
2916
|
|
|
2917 ngx_http_upstream_srv_conf_t *
|
|
|
2918 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2919 {
|
|
|
2920 ngx_uint_t i;
|
|
|
2921 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2922 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2923
|
|
|
2924 if (u->upstream) {
|
|
|
2925 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2926 if (u->err) {
|
|
|
2927 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2928 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2929 }
|
|
|
2930
|
|
|
2931 return NULL;
|
|
|
2932 }
|
|
|
2933
|
|
|
2934 if (u->peers) {
|
|
|
2935 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2936 if (uscf == NULL) {
|
|
|
2937 return NULL;
|
|
|
2938 }
|
|
|
2939
|
|
|
2940 uscf->peers = u->peers;
|
|
|
2941
|
|
|
2942 return uscf;
|
|
|
2943 }
|
|
|
2944 }
|
|
|
2945
|
|
|
2946 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2947
|
|
|
2948 uscfp = umcf->upstreams.elts;
|
|
|
2949
|
|
|
2950 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2951 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2952 continue;
|
|
|
2953 }
|
|
|
2954
|
|
|
2955 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2956 == 0)
|
|
|
2957 {
|
|
|
2958 return uscfp[i];
|
|
|
2959 }
|
|
|
2960 }
|
|
|
2961
|
|
|
2962 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2963 if (uscf == NULL) {
|
|
|
2964 return NULL;
|
|
|
2965 }
|
|
|
2966
|
|
|
2967 uscf->host = u->host;
|
|
|
2968 uscf->file_name = cf->conf_file->file.name;
|
|
|
2969 uscf->line = cf->conf_file->line;
|
|
|
2970 uscf->port = u->default_portn;
|
|
|
2971
|
|
|
2972 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2973 if (uscfp == NULL) {
|
|
|
2974 return NULL;
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 *uscfp = uscf;
|
|
|
2978
|
|
|
2979 return uscf;
|
|
|
2980 }
|
|
|
2981
|
|
|
2982
|
|
58
|
2983 static void *
|
|
|
2984 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2985 {
|
|
|
2986 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2987
|
|
|
2988 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2989 if (umcf == NULL) {
|
|
|
2990 return NULL;
|
|
|
2991 }
|
|
|
2992
|
|
200
|
2993 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2994 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2995 != NGX_OK)
|
|
|
2996 {
|
|
|
2997 return NGX_CONF_ERROR;
|
|
|
2998 }
|
|
|
2999
|
|
58
|
3000 return umcf;
|
|
|
3001 }
|
|
|
3002
|
|
|
3003
|
|
|
3004 static char *
|
|
200
|
3005 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3006 {
|
|
|
3007 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3008
|
|
200
|
3009 ngx_uint_t i;
|
|
|
3010 ngx_array_t headers_in;
|
|
|
3011 ngx_hash_key_t *hk;
|
|
|
3012 ngx_hash_init_t hash;
|
|
|
3013 ngx_http_upstream_header_t *header;
|
|
|
3014 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3015
|
|
|
3016 uscfp = umcf->upstreams.elts;
|
|
|
3017
|
|
|
3018 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
3019 if (uscfp[i]->peers) {
|
|
|
3020 continue;
|
|
|
3021 }
|
|
|
3022
|
|
|
3023 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
212
|
3024 uscfp[i]->port);
|
|
200
|
3025 if (uscfp[i]->peers == NULL) {
|
|
|
3026 return NGX_CONF_ERROR;
|
|
|
3027 }
|
|
|
3028
|
|
|
3029 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
3030 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
3031 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
3032 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
3033 uscfp[i]->line);
|
|
|
3034 return NGX_CONF_ERROR;
|
|
|
3035 }
|
|
|
3036 }
|
|
198
|
3037
|
|
212
|
3038
|
|
198
|
3039 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3040 != NGX_OK)
|
|
58
|
3041 {
|
|
|
3042 return NGX_CONF_ERROR;
|
|
|
3043 }
|
|
|
3044
|
|
198
|
3045 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3046 hk = ngx_array_push(&headers_in);
|
|
|
3047 if (hk == NULL) {
|
|
|
3048 return NGX_CONF_ERROR;
|
|
|
3049 }
|
|
|
3050
|
|
|
3051 hk->key = header->name;
|
|
|
3052 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3053 hk->value = header;
|
|
|
3054 }
|
|
|
3055
|
|
|
3056 hash.hash = &umcf->headers_in_hash;
|
|
|
3057 hash.key = ngx_hash_key_lc;
|
|
|
3058 hash.max_size = 512;
|
|
244
|
3059 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3060 hash.name = "upstream_headers_in_hash";
|
|
|
3061 hash.pool = cf->pool;
|
|
|
3062 hash.temp_pool = NULL;
|
|
|
3063
|
|
|
3064 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3065 return NGX_CONF_ERROR;
|
|
|
3066 }
|
|
58
|
3067
|
|
|
3068 return NGX_CONF_OK;
|
|
|
3069 }
|
