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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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25 ngx_http_upstream_t *u);
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130
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26 static void
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27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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31 ssize_t bytes);
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58
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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35 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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37 static void ngx_http_upstream_cleanup(void *data);
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28
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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40
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58
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41 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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43 static ngx_int_t
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44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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45 ngx_table_elt_t *h, ngx_uint_t offset);
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46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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50 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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52 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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54 static ngx_int_t
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55 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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63 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 #if (NGX_HTTP_GZIP)
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66 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 #endif
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69
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28
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70 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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71 uintptr_t data);
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72 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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73 u_char *buf, ngx_http_log_op_t *op);
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122
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74 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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75 uintptr_t data);
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112
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76 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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77 u_char *buf, ngx_http_log_op_t *op);
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28
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78
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58
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79 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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80 size_t len);
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122
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81
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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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64
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114 ngx_http_upstream_copy_content_type, 0, 0 },
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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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58
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202 #if (NGX_HTTP_GZIP)
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203 { ngx_string("Content-Encoding"),
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204 ngx_http_upstream_process_header_line,
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205 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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206 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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207 #endif
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208
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64
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209 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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210 };
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28
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211
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212
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200
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213 static ngx_command_t ngx_http_upstream_commands[] = {
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214
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215 { ngx_string("upstream"),
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216 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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217 ngx_http_upstream,
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218 0,
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219 0,
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220 NULL },
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221
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222 { ngx_string("server"),
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223 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1,
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224 ngx_http_upstream_server,
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225 NGX_HTTP_SRV_CONF_OFFSET,
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226 0,
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227 NULL },
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228
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229 ngx_null_command
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230 };
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231
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232
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233 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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234 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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235 NULL, /* postconfiguration */
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236
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237 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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238 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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239
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240 NULL, /* create server configuration */
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241 NULL, /* merge server configuration */
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242
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243 NULL, /* create location configuration */
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244 NULL /* merge location configuration */
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245 };
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126
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246
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28
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247
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248 ngx_module_t ngx_http_upstream_module = {
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58
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249 NGX_MODULE_V1,
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28
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250 &ngx_http_upstream_module_ctx, /* module context */
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200
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251 ngx_http_upstream_commands, /* module directives */
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28
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252 NGX_HTTP_MODULE, /* module type */
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90
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253 NULL, /* init master */
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28
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254 NULL, /* init module */
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90
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255 NULL, /* init process */
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256 NULL, /* init thread */
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257 NULL, /* exit thread */
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258 NULL, /* exit process */
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259 NULL, /* exit master */
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260 NGX_MODULE_V1_PADDING
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28
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261 };
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262
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263
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132
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264 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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265 { ngx_string("upstream_status"), 0, NULL,
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122
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266 ngx_http_upstream_log_status_getlen,
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267 ngx_http_upstream_log_status },
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268 { ngx_string("upstream_response_time"), 0, NULL,
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269 ngx_http_upstream_log_response_time_getlen,
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270 ngx_http_upstream_log_response_time },
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28
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271 { ngx_null_string, 0, NULL, NULL, NULL }
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272 };
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273
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274
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122
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275 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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276
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186
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277 { ngx_string("upstream_status"), NULL,
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132
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278 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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279
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186
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280 { ngx_string("upstream_response_time"), NULL,
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132
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281 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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282
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186
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283 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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284 };
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285
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286
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36
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287 void
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288 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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289 {
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112
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290 ngx_time_t *tp;
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58
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291 ngx_connection_t *c;
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118
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292 ngx_http_cleanup_t *cln;
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58
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293 ngx_http_upstream_t *u;
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294 ngx_http_core_loc_conf_t *clcf;
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28
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295
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296 c = r->connection;
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297
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298 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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299 "http init upstream, client timer: %d", c->read->timer_set);
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300
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301 if (c->read->timer_set) {
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302 ngx_del_timer(c->read);
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303 }
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304
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178
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305 u = r->upstream;
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306
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307 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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308 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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309 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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310 }
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126
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311
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28
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312 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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313
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314 if (!c->write->active) {
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80
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315 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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316 == NGX_ERROR)
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28
|
317 {
|
|
|
318 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
319 return;
|
|
|
320 }
|
|
|
321 }
|
|
|
322 }
|
|
|
323
|
|
86
|
324 if (r->request_body) {
|
|
|
325 u->request_bufs = r->request_body->bufs;
|
|
|
326 }
|
|
58
|
327
|
|
86
|
328 if (u->create_request(r) != NGX_OK) {
|
|
28
|
329 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
330 return;
|
|
|
331 }
|
|
|
332
|
|
|
333 u->peer.log = r->connection->log;
|
|
58
|
334 u->saved_log_handler = r->log_handler;
|
|
|
335 r->log_handler = ngx_http_upstream_log_error;
|
|
|
336
|
|
|
337 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
338
|
|
|
339 u->output.sendfile = r->connection->sendfile;
|
|
|
340 u->output.pool = r->pool;
|
|
|
341 u->output.bufs.num = 1;
|
|
58
|
342 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
343 u->output.output_filter = ngx_chain_writer;
|
|
|
344 u->output.filter_ctx = &u->writer;
|
|
|
345
|
|
|
346 u->writer.pool = r->pool;
|
|
|
347
|
|
|
348 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
349 sizeof(ngx_http_upstream_state_t))
|
|
|
350 != NGX_OK)
|
|
28
|
351 {
|
|
|
352 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
353 return;
|
|
|
354 }
|
|
|
355
|
|
50
|
356 u->state = ngx_array_push(&u->states);
|
|
|
357 if (u->state == NULL) {
|
|
28
|
358 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361
|
|
|
362 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
363
|
|
112
|
364 tp = ngx_timeofday();
|
|
|
365
|
|
|
366 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
367
|
|
142
|
368 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
369 if (cln == NULL) {
|
|
|
370 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
371 return;
|
|
|
372 }
|
|
|
373
|
|
|
374 cln->handler = ngx_http_upstream_cleanup;
|
|
|
375 cln->data = r;
|
|
|
376 u->cleanup = &cln->handler;
|
|
|
377
|
|
28
|
378 ngx_http_upstream_connect(r, u);
|
|
|
379 }
|
|
|
380
|
|
|
381
|
|
36
|
382 static void
|
|
58
|
383 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
384 {
|
|
|
385 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
386 }
|
|
|
387
|
|
|
388
|
|
|
389 static void
|
|
|
390 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
391 {
|
|
|
392 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
393 }
|
|
|
394
|
|
|
395
|
|
|
396 static void
|
|
|
397 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
398 ngx_event_t *ev)
|
|
28
|
399 {
|
|
|
400 int n;
|
|
|
401 char buf[1];
|
|
126
|
402 ngx_err_t err;
|
|
28
|
403 ngx_connection_t *c;
|
|
|
404 ngx_http_upstream_t *u;
|
|
|
405
|
|
76
|
406 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
407 "http upstream check client, write event:%d, \"%V\"",
|
|
|
408 ev->write, &r->uri);
|
|
28
|
409
|
|
58
|
410 c = r->connection;
|
|
32
|
411 u = r->upstream;
|
|
|
412
|
|
132
|
413 if (c->error) {
|
|
76
|
414 ngx_http_upstream_finalize_request(r, u,
|
|
|
415 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
32
|
419 if (u->peer.connection == NULL) {
|
|
|
420 return;
|
|
|
421 }
|
|
|
422
|
|
28
|
423 #if (NGX_HAVE_KQUEUE)
|
|
|
424
|
|
|
425 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
426
|
|
|
427 if (!ev->pending_eof) {
|
|
|
428 return;
|
|
|
429 }
|
|
|
430
|
|
|
431 ev->eof = 1;
|
|
132
|
432 c->error = 1;
|
|
28
|
433
|
|
|
434 if (ev->kq_errno) {
|
|
|
435 ev->error = 1;
|
|
|
436 }
|
|
|
437
|
|
|
438 if (!u->cachable && u->peer.connection) {
|
|
|
439 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
440 "kevent() reported that client closed prematurely "
|
|
|
441 "connection, so upstream connection is closed too");
|
|
28
|
442 ngx_http_upstream_finalize_request(r, u,
|
|
|
443 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
444 return;
|
|
|
445 }
|
|
|
446
|
|
|
447 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
448 "kevent() reported that client closed "
|
|
|
449 "prematurely connection");
|
|
|
450
|
|
|
451 if (u->peer.connection == NULL) {
|
|
|
452 ngx_http_upstream_finalize_request(r, u,
|
|
|
453 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
454 return;
|
|
|
455 }
|
|
|
456
|
|
|
457 return;
|
|
|
458 }
|
|
|
459
|
|
|
460 #endif
|
|
|
461
|
|
|
462 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
463
|
|
|
464 err = ngx_socket_errno;
|
|
|
465
|
|
|
466 /*
|
|
|
467 * we do not need to disable the write event because
|
|
|
468 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
469 */
|
|
|
470
|
|
|
471 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
476 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
477 ngx_http_upstream_finalize_request(r, u,
|
|
|
478 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
479 return;
|
|
|
480 }
|
|
|
481 }
|
|
|
482
|
|
|
483 if (n > 0) {
|
|
|
484 return;
|
|
|
485 }
|
|
|
486
|
|
|
487 if (n == -1) {
|
|
|
488 if (err == NGX_EAGAIN) {
|
|
|
489 return;
|
|
|
490 }
|
|
|
491
|
|
|
492 ev->error = 1;
|
|
|
493
|
|
32
|
494 } else { /* n == 0 */
|
|
28
|
495 err = 0;
|
|
|
496 }
|
|
|
497
|
|
78
|
498 ev->eof = 1;
|
|
132
|
499 c->error = 1;
|
|
78
|
500
|
|
28
|
501 if (!u->cachable && u->peer.connection) {
|
|
|
502 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
503 "client closed prematurely connection, "
|
|
|
504 "so upstream connection is closed too");
|
|
|
505 ngx_http_upstream_finalize_request(r, u,
|
|
|
506 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
507 return;
|
|
|
508 }
|
|
|
509
|
|
|
510 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
511 "client closed prematurely connection");
|
|
|
512
|
|
|
513 if (u->peer.connection == NULL) {
|
|
|
514 ngx_http_upstream_finalize_request(r, u,
|
|
|
515 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
516 return;
|
|
|
517 }
|
|
|
518 }
|
|
|
519
|
|
|
520
|
|
36
|
521 static void
|
|
|
522 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
523 {
|
|
140
|
524 ngx_int_t rc;
|
|
|
525 ngx_connection_t *c;
|
|
28
|
526
|
|
32
|
527 r->connection->log->action = "connecting to upstream";
|
|
28
|
528
|
|
|
529 r->connection->single_connection = 0;
|
|
|
530
|
|
|
531 rc = ngx_event_connect_peer(&u->peer);
|
|
|
532
|
|
|
533 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
534 "http upstream connect: %i", rc);
|
|
|
535
|
|
|
536 if (rc == NGX_ERROR) {
|
|
|
537 ngx_http_upstream_finalize_request(r, u,
|
|
|
538 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
539 return;
|
|
|
540 }
|
|
|
541
|
|
140
|
542 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
543
|
|
92
|
544 if (rc == NGX_BUSY) {
|
|
|
545 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
546 }
|
|
|
547
|
|
|
548 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
549 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
550 return;
|
|
|
551 }
|
|
|
552
|
|
126
|
553 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
554
|
|
28
|
555 c = u->peer.connection;
|
|
|
556
|
|
|
557 c->data = r;
|
|
140
|
558
|
|
58
|
559 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
560 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
561
|
|
|
562 c->sendfile = r->connection->sendfile;
|
|
|
563
|
|
|
564 c->pool = r->pool;
|
|
|
565 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
566
|
|
|
567 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
568
|
|
|
569 u->writer.out = NULL;
|
|
|
570 u->writer.last = &u->writer.out;
|
|
|
571 u->writer.connection = c;
|
|
|
572 u->writer.limit = 0;
|
|
|
573
|
|
|
574 if (u->request_sent) {
|
|
58
|
575 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
576 ngx_http_upstream_finalize_request(r, u,
|
|
|
577 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
578 return;
|
|
|
579 }
|
|
28
|
580 }
|
|
|
581
|
|
146
|
582 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
583
|
|
|
584 /*
|
|
|
585 * the r->request_body->buf can be reused for one request only,
|
|
|
586 * the subrequests should allocate their own temporay bufs
|
|
|
587 */
|
|
|
588
|
|
|
589 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
590 if (u->output.free == NULL) {
|
|
|
591 ngx_http_upstream_finalize_request(r, u,
|
|
|
592 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
593 return;
|
|
28
|
594 }
|
|
122
|
595
|
|
|
596 u->output.free->buf = r->request_body->buf;
|
|
|
597 u->output.free->next = NULL;
|
|
|
598 u->output.allocated = 1;
|
|
|
599
|
|
|
600 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
601 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
602 r->request_body->buf->tag = u->output.tag;
|
|
28
|
603 }
|
|
|
604
|
|
|
605 u->request_sent = 0;
|
|
|
606
|
|
|
607 if (rc == NGX_AGAIN) {
|
|
|
608 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
609 return;
|
|
|
610 }
|
|
|
611
|
|
126
|
612 #if (NGX_HTTP_SSL)
|
|
|
613
|
|
140
|
614 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
615 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
|
619 #endif
|
|
|
620
|
|
28
|
621 ngx_http_upstream_send_request(r, u);
|
|
|
622 }
|
|
|
623
|
|
|
624
|
|
126
|
625 #if (NGX_HTTP_SSL)
|
|
|
626
|
|
|
627 static void
|
|
140
|
628 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
629 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
630 {
|
|
|
631 ngx_int_t rc;
|
|
|
632 ngx_peer_t *peer;
|
|
|
633
|
|
|
634 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
635 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
636 == NGX_ERROR)
|
|
|
637 {
|
|
|
638 ngx_http_upstream_finalize_request(r, u,
|
|
|
639 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
640 return;
|
|
|
641 }
|
|
|
642
|
|
|
643 c->sendfile = 0;
|
|
168
|
644 u->output.sendfile = 0;
|
|
140
|
645
|
|
|
646 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
647
|
|
|
648 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
649 ngx_http_upstream_finalize_request(r, u,
|
|
|
650 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
651 return;
|
|
|
652 }
|
|
|
653
|
|
190
|
654 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
655
|
|
140
|
656 rc = ngx_ssl_handshake(c);
|
|
|
657
|
|
|
658 if (rc == NGX_AGAIN) {
|
|
|
659 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
660 return;
|
|
|
661 }
|
|
|
662
|
|
|
663 ngx_http_upstream_ssl_handshake(c);
|
|
|
664 }
|
|
|
665
|
|
|
666
|
|
|
667 static void
|
|
126
|
668 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
669 {
|
|
|
670 ngx_http_request_t *r;
|
|
|
671 ngx_http_upstream_t *u;
|
|
|
672
|
|
|
673 r = c->data;
|
|
|
674 u = r->upstream;
|
|
|
675
|
|
|
676 if (c->ssl->handshaked) {
|
|
|
677
|
|
|
678 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
679 c->read->handler = ngx_http_upstream_process_header;
|
|
|
680
|
|
|
681 ngx_http_upstream_send_request(r, u);
|
|
|
682
|
|
|
683 return;
|
|
|
684 }
|
|
|
685
|
|
|
686 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
687
|
|
|
688 }
|
|
|
689
|
|
|
690 #endif
|
|
|
691
|
|
|
692
|
|
58
|
693 static ngx_int_t
|
|
36
|
694 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
695 {
|
|
|
696 ngx_chain_t *cl;
|
|
|
697
|
|
58
|
698 if (u->reinit_request(r) != NGX_OK) {
|
|
|
699 return NGX_ERROR;
|
|
|
700 }
|
|
|
701
|
|
|
702 ngx_memzero(&r->upstream->headers_in,
|
|
|
703 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
704
|
|
|
705 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
706 sizeof(ngx_table_elt_t))
|
|
|
707 != NGX_OK)
|
|
58
|
708 {
|
|
|
709 return NGX_ERROR;
|
|
28
|
710 }
|
|
|
711
|
|
|
712 /* reinit the request chain */
|
|
126
|
713
|
|
58
|
714 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
715 cl->buf->pos = cl->buf->start;
|
|
|
716 cl->buf->file_pos = 0;
|
|
|
717 }
|
|
|
718
|
|
58
|
719 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
720
|
|
122
|
721 if (r->request_body && r->request_body->temp_file
|
|
146
|
722 && r != r->main && u->output.buf)
|
|
122
|
723 {
|
|
|
724 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
725 if (u->output.free == NULL) {
|
|
|
726 return NGX_ERROR;
|
|
58
|
727 }
|
|
122
|
728
|
|
|
729 u->output.free->buf = u->output.buf;
|
|
|
730 u->output.free->next = NULL;
|
|
|
731
|
|
|
732 u->output.buf->pos = u->output.buf->start;
|
|
|
733 u->output.buf->last = u->output.buf->start;
|
|
58
|
734 }
|
|
28
|
735
|
|
|
736 u->output.buf = NULL;
|
|
|
737 u->output.in = NULL;
|
|
|
738 u->output.busy = NULL;
|
|
126
|
739
|
|
130
|
740 /* reinit u->buffer */
|
|
126
|
741
|
|
28
|
742 #if 0
|
|
|
743 if (u->cache) {
|
|
130
|
744 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
745 u->buffer.last = u->buffer.pos;
|
|
28
|
746
|
|
|
747 } else {
|
|
130
|
748 u->buffer.pos = u->buffer.start;
|
|
|
749 u->buffer.last = u->buffer.start;
|
|
28
|
750 }
|
|
|
751 #else
|
|
58
|
752
|
|
130
|
753 u->buffer.pos = u->buffer.start;
|
|
|
754 u->buffer.last = u->buffer.start;
|
|
58
|
755
|
|
28
|
756 #endif
|
|
|
757
|
|
|
758 /* add one more state */
|
|
|
759
|
|
50
|
760 u->state = ngx_array_push(&u->states);
|
|
|
761 if (u->state == NULL) {
|
|
58
|
762 return NGX_ERROR;
|
|
28
|
763 }
|
|
|
764
|
|
|
765 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
766
|
|
|
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 {
|
|
32
|
774 int rc;
|
|
|
775 ngx_connection_t *c;
|
|
126
|
776
|
|
28
|
777 c = u->peer.connection;
|
|
|
778
|
|
|
779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
780 "http upstream send request");
|
|
|
781
|
|
|
782 #if (NGX_HAVE_KQUEUE)
|
|
|
783
|
|
|
784 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
785 && !u->request_sent
|
|
|
786 && c->write->pending_eof)
|
|
|
787 {
|
|
86
|
788 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
789 "kevent() reported that connect() failed");
|
|
28
|
790 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
791 return;
|
|
|
792 }
|
|
|
793
|
|
|
794 #endif
|
|
|
795
|
|
32
|
796 c->log->action = "sending request to upstream";
|
|
28
|
797
|
|
58
|
798 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
799
|
|
|
800 u->request_sent = 1;
|
|
|
801
|
|
|
802 if (rc == NGX_ERROR) {
|
|
|
803 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
804 return;
|
|
|
805 }
|
|
|
806
|
|
|
807 if (c->write->timer_set) {
|
|
|
808 ngx_del_timer(c->write);
|
|
|
809 }
|
|
|
810
|
|
|
811 if (rc == NGX_AGAIN) {
|
|
|
812 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
813
|
|
|
814 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
815 {
|
|
|
816 ngx_http_upstream_finalize_request(r, u,
|
|
|
817 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
818 return;
|
|
|
819 }
|
|
|
820
|
|
|
821 return;
|
|
|
822 }
|
|
|
823
|
|
|
824 /* rc == NGX_OK */
|
|
|
825
|
|
|
826 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
827 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
828 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
829 ngx_tcp_push_n " failed");
|
|
|
830 ngx_http_upstream_finalize_request(r, u,
|
|
|
831 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
832 return;
|
|
28
|
833 }
|
|
|
834
|
|
|
835 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
836 }
|
|
126
|
837
|
|
28
|
838 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
839
|
|
|
840 #if 1
|
|
|
841 if (c->read->ready) {
|
|
126
|
842
|
|
28
|
843 /* post aio operation */
|
|
|
844
|
|
|
845 /*
|
|
|
846 * TODO comment
|
|
|
847 * although we can post aio operation just in the end
|
|
|
848 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
849 * it's better to do here because we postpone header buffer allocation
|
|
|
850 */
|
|
|
851
|
|
|
852 ngx_http_upstream_process_header(c->read);
|
|
|
853 return;
|
|
|
854 }
|
|
|
855 #endif
|
|
|
856
|
|
58
|
857 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
858
|
|
58
|
859 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
860 ngx_http_upstream_finalize_request(r, u,
|
|
|
861 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
862 return;
|
|
|
863 }
|
|
|
864 }
|
|
|
865
|
|
|
866
|
|
36
|
867 static void
|
|
|
868 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
869 {
|
|
|
870 ngx_connection_t *c;
|
|
|
871 ngx_http_request_t *r;
|
|
|
872 ngx_http_upstream_t *u;
|
|
|
873
|
|
|
874 c = wev->data;
|
|
|
875 r = c->data;
|
|
|
876 u = r->upstream;
|
|
|
877
|
|
|
878 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
879 "http upstream send request handler");
|
|
|
880
|
|
|
881 if (wev->timedout) {
|
|
|
882 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
883 return;
|
|
|
884 }
|
|
|
885
|
|
140
|
886 #if (NGX_HTTP_SSL)
|
|
|
887
|
|
|
888 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
889 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
890 return;
|
|
|
891 }
|
|
|
892
|
|
|
893 #endif
|
|
|
894
|
|
200
|
895 if (u->header_sent) {
|
|
|
896 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
897
|
|
|
898 (void) ngx_handle_write_event(wev, 0);
|
|
|
899
|
|
|
900 return;
|
|
|
901 }
|
|
|
902
|
|
28
|
903 ngx_http_upstream_send_request(r, u);
|
|
|
904 }
|
|
|
905
|
|
|
906
|
|
36
|
907 static void
|
|
|
908 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
909 {
|
|
64
|
910 ssize_t n;
|
|
|
911 ngx_int_t rc;
|
|
122
|
912 ngx_str_t *uri, args;
|
|
198
|
913 ngx_uint_t i, flags;
|
|
64
|
914 ngx_list_part_t *part;
|
|
|
915 ngx_table_elt_t *h;
|
|
|
916 ngx_connection_t *c;
|
|
|
917 ngx_http_request_t *r;
|
|
|
918 ngx_http_upstream_t *u;
|
|
|
919 ngx_http_err_page_t *err_page;
|
|
|
920 ngx_http_core_loc_conf_t *clcf;
|
|
|
921 ngx_http_upstream_header_t *hh;
|
|
|
922 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
923
|
|
|
924 c = rev->data;
|
|
|
925 r = c->data;
|
|
|
926 u = r->upstream;
|
|
|
927
|
|
|
928 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
929 "http upstream process header");
|
|
28
|
930
|
|
32
|
931 c->log->action = "reading response header from upstream";
|
|
28
|
932
|
|
|
933 if (rev->timedout) {
|
|
|
934 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
935 return;
|
|
|
936 }
|
|
126
|
937
|
|
130
|
938 if (u->buffer.start == NULL) {
|
|
|
939 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
940 if (u->buffer.start == NULL) {
|
|
28
|
941 ngx_http_upstream_finalize_request(r, u,
|
|
|
942 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
943 return;
|
|
|
944 }
|
|
|
945
|
|
130
|
946 u->buffer.pos = u->buffer.start;
|
|
|
947 u->buffer.last = u->buffer.start;
|
|
|
948 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
949 u->buffer.temporary = 1;
|
|
|
950
|
|
|
951 u->buffer.tag = u->output.tag;
|
|
28
|
952
|
|
58
|
953 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
954 sizeof(ngx_table_elt_t))
|
|
|
955 != NGX_OK)
|
|
58
|
956 {
|
|
|
957 ngx_http_upstream_finalize_request(r, u,
|
|
|
958 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
959 return;
|
|
|
960 }
|
|
|
961
|
|
28
|
962 #if 0
|
|
|
963 if (u->cache) {
|
|
130
|
964 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
965 u->buffer.last = u->buffer.pos;
|
|
28
|
966 }
|
|
|
967 #endif
|
|
|
968 }
|
|
|
969
|
|
130
|
970 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
971 u->buffer.end - u->buffer.last);
|
|
28
|
972
|
|
|
973 if (n == NGX_AGAIN) {
|
|
|
974 #if 0
|
|
|
975 ngx_add_timer(rev, u->read_timeout);
|
|
|
976 #endif
|
|
|
977
|
|
|
978 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
979 ngx_http_upstream_finalize_request(r, u,
|
|
|
980 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
981 return;
|
|
|
982 }
|
|
|
983
|
|
|
984 return;
|
|
|
985 }
|
|
|
986
|
|
|
987 if (n == 0) {
|
|
|
988 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
989 "upstream prematurely closed connection");
|
|
|
990 }
|
|
|
991
|
|
|
992 if (n == NGX_ERROR || n == 0) {
|
|
|
993 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
994 return;
|
|
|
995 }
|
|
|
996
|
|
130
|
997 u->buffer.last += n;
|
|
28
|
998
|
|
|
999 #if 0
|
|
|
1000 u->valid_header_in = 0;
|
|
|
1001
|
|
|
1002 u->peer.cached = 0;
|
|
|
1003 #endif
|
|
|
1004
|
|
|
1005 rc = u->process_header(r);
|
|
|
1006
|
|
|
1007 if (rc == NGX_AGAIN) {
|
|
|
1008 #if 0
|
|
|
1009 ngx_add_timer(rev, u->read_timeout);
|
|
|
1010 #endif
|
|
|
1011
|
|
130
|
1012 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1013 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1014 "upstream sent too big header");
|
|
|
1015
|
|
|
1016 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1017 return;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1021 ngx_http_upstream_finalize_request(r, u,
|
|
|
1022 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1023 return;
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 return;
|
|
|
1027 }
|
|
|
1028
|
|
|
1029 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1030 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1031 return;
|
|
|
1032 }
|
|
|
1033
|
|
|
1034 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1035 ngx_http_upstream_finalize_request(r, u,
|
|
|
1036 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1037 return;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 /* rc == NGX_OK */
|
|
|
1041
|
|
78
|
1042 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1043
|
|
|
1044 if (u->peer.tries > 1
|
|
|
1045 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1046 {
|
|
|
1047 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1048 return;
|
|
|
1049 }
|
|
|
1050
|
|
|
1051 #if (NGX_HTTP_CACHE)
|
|
|
1052
|
|
|
1053 if (u->peer.tries == 0
|
|
|
1054 && u->stale
|
|
|
1055 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1056 {
|
|
|
1057 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1058 ngx_http_send_cached_response(r));
|
|
58
|
1059 return;
|
|
|
1060 }
|
|
|
1061
|
|
|
1062 #endif
|
|
|
1063 }
|
|
|
1064
|
|
146
|
1065 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1066
|
|
|
1067 if (u->peer.tries > 1
|
|
|
1068 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1069 {
|
|
|
1070 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1071 return;
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 if (u->conf->redirect_404) {
|
|
|
1075 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1076 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1077 return;
|
|
|
1078 }
|
|
58
|
1079 }
|
|
|
1080
|
|
|
1081
|
|
78
|
1082 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
1083 && u->conf->redirect_errors
|
|
|
1084 && r->err_ctx == NULL)
|
|
|
1085 {
|
|
|
1086 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1087
|
|
|
1088 if (clcf->error_pages) {
|
|
|
1089
|
|
|
1090 err_page = clcf->error_pages->elts;
|
|
|
1091 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1092 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1093
|
|
|
1094 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1095
|
|
|
1096 r->headers_out.www_authenticate =
|
|
|
1097 ngx_list_push(&r->headers_out.headers);
|
|
|
1098
|
|
|
1099 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1100 ngx_http_upstream_finalize_request(r, u,
|
|
|
1101 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1102 return;
|
|
|
1103 }
|
|
|
1104
|
|
126
|
1105 *r->headers_out.www_authenticate =
|
|
78
|
1106 *u->headers_in.www_authenticate;
|
|
|
1107 }
|
|
|
1108
|
|
36
|
1109 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1110 u->headers_in.status_n);
|
|
36
|
1111 return;
|
|
|
1112 }
|
|
|
1113 }
|
|
|
1114 }
|
|
|
1115 }
|
|
|
1116
|
|
64
|
1117 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1118 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1119
|
|
|
1120 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1121
|
|
|
1122 part = &r->upstream->headers_in.headers.part;
|
|
|
1123 h = part->elts;
|
|
|
1124
|
|
|
1125 for (i = 0; /* void */; i++) {
|
|
|
1126
|
|
|
1127 if (i >= part->nelts) {
|
|
|
1128 if (part->next == NULL) {
|
|
|
1129 break;
|
|
|
1130 }
|
|
126
|
1131
|
|
64
|
1132 part = part->next;
|
|
|
1133 h = part->elts;
|
|
|
1134 i = 0;
|
|
|
1135 }
|
|
|
1136
|
|
198
|
1137 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1138 h[i].lowcase_key, h[i].key.len);
|
|
|
1139
|
|
|
1140 if (hh && hh->redirect) {
|
|
|
1141 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
64
|
1142 ngx_http_upstream_finalize_request(r, u,
|
|
|
1143 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1144 return;
|
|
|
1145 }
|
|
|
1146 }
|
|
|
1147 }
|
|
|
1148
|
|
122
|
1149 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1150 args.len = 0;
|
|
|
1151 args.data = NULL;
|
|
|
1152 flags = 0;
|
|
|
1153
|
|
|
1154 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1155 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1156 return;
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1160 r->zero_in_uri = 1;
|
|
|
1161 }
|
|
|
1162
|
|
|
1163 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1164 return;
|
|
|
1165 }
|
|
|
1166
|
|
28
|
1167 ngx_http_upstream_send_response(r, u);
|
|
|
1168 }
|
|
|
1169
|
|
|
1170
|
|
36
|
1171 static void
|
|
|
1172 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1173 {
|
|
132
|
1174 int tcp_nodelay;
|
|
130
|
1175 ssize_t size;
|
|
58
|
1176 ngx_int_t rc;
|
|
198
|
1177 ngx_uint_t i;
|
|
58
|
1178 ngx_list_part_t *part;
|
|
|
1179 ngx_table_elt_t *h;
|
|
|
1180 ngx_event_pipe_t *p;
|
|
132
|
1181 ngx_connection_t *c;
|
|
112
|
1182 ngx_pool_cleanup_t *cl;
|
|
|
1183 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1184 ngx_http_core_loc_conf_t *clcf;
|
|
|
1185 ngx_http_upstream_header_t *hh;
|
|
|
1186 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1187
|
|
|
1188 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1189
|
|
|
1190 part = &r->upstream->headers_in.headers.part;
|
|
|
1191 h = part->elts;
|
|
|
1192
|
|
|
1193 for (i = 0; /* void */; i++) {
|
|
28
|
1194
|
|
58
|
1195 if (i >= part->nelts) {
|
|
|
1196 if (part->next == NULL) {
|
|
|
1197 break;
|
|
|
1198 }
|
|
126
|
1199
|
|
58
|
1200 part = part->next;
|
|
|
1201 h = part->elts;
|
|
|
1202 i = 0;
|
|
|
1203 }
|
|
|
1204
|
|
198
|
1205 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1206 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1207 {
|
|
198
|
1208 continue;
|
|
|
1209 }
|
|
|
1210
|
|
|
1211 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1212 h[i].lowcase_key, h[i].key.len);
|
|
|
1213
|
|
|
1214 if (hh) {
|
|
|
1215 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1216 ngx_http_upstream_finalize_request(r, u,
|
|
|
1217 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1218 return;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 continue;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1225 ngx_http_upstream_finalize_request(r, u,
|
|
|
1226 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1227 return;
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230
|
|
198
|
1231 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1232 r->headers_out.server->hash = 0;
|
|
|
1233 }
|
|
|
1234
|
|
|
1235 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1236 r->headers_out.date->hash = 0;
|
|
|
1237 }
|
|
|
1238
|
|
78
|
1239 r->headers_out.status = u->headers_in.status_n;
|
|
|
1240 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1241
|
|
130
|
1242 if (r->headers_out.content_length_n != -1) {
|
|
|
1243 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1244
|
|
|
1245 } else {
|
|
|
1246 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1247 }
|
|
|
1248
|
|
58
|
1249 rc = ngx_http_send_header(r);
|
|
28
|
1250
|
|
178
|
1251 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1252 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1253 return;
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 u->header_sent = 1;
|
|
|
1257
|
|
122
|
1258 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1259 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1260 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1261 clf = cl->data;
|
|
|
1262
|
|
|
1263 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1264 cl->handler(clf);
|
|
|
1265 cl->handler = NULL;
|
|
|
1266 break;
|
|
|
1267 }
|
|
|
1268 }
|
|
|
1269 }
|
|
|
1270 }
|
|
|
1271
|
|
132
|
1272 c = r->connection;
|
|
|
1273
|
|
130
|
1274 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1275
|
|
198
|
1276 if (!u->buffering) {
|
|
130
|
1277
|
|
|
1278 if (u->input_filter == NULL) {
|
|
|
1279 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1280 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1281 u->input_filter_ctx = r;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 u->peer.connection->read->handler =
|
|
|
1285 ngx_http_upstream_process_non_buffered_body;
|
|
|
1286 r->write_event_handler =
|
|
|
1287 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1288
|
|
|
1289 r->limit_rate = 0;
|
|
|
1290
|
|
|
1291 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1292 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1293 return;
|
|
|
1294 }
|
|
|
1295
|
|
132
|
1296 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1297 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1298
|
|
|
1299 tcp_nodelay = 1;
|
|
|
1300
|
|
|
1301 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1302 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1303 {
|
|
|
1304 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1305 "setsockopt(TCP_NODELAY) failed");
|
|
|
1306 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1307 return;
|
|
|
1308 }
|
|
|
1309
|
|
|
1310 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1311 }
|
|
|
1312
|
|
130
|
1313 size = u->buffer.last - u->buffer.pos;
|
|
|
1314
|
|
|
1315 if (size) {
|
|
|
1316 u->buffer.last = u->buffer.pos;
|
|
|
1317
|
|
|
1318 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1319 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1320 return;
|
|
|
1321 }
|
|
|
1322
|
|
132
|
1323 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1324
|
|
|
1325 } else {
|
|
|
1326 u->buffer.pos = u->buffer.start;
|
|
|
1327 u->buffer.last = u->buffer.start;
|
|
|
1328
|
|
|
1329 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1330 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1331 return;
|
|
|
1332 }
|
|
|
1333 }
|
|
|
1334
|
|
|
1335 return;
|
|
|
1336 }
|
|
|
1337
|
|
28
|
1338 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1339
|
|
|
1340 #if 0
|
|
|
1341
|
|
|
1342 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1343 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1344 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1345 ngx_close_file_n " \"%s\" failed",
|
|
|
1346 u->cache->ctx.file.name.data);
|
|
|
1347 }
|
|
|
1348 }
|
|
|
1349
|
|
|
1350 if (u->cachable) {
|
|
130
|
1351 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1352
|
|
|
1353 header->expires = u->cache->ctx.expires;
|
|
|
1354 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1355 header->date = u->cache->ctx.date;
|
|
|
1356 header->length = r->headers_out.content_length_n;
|
|
|
1357 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1358
|
|
|
1359 header->key_len = u->cache->ctx.key0.len;
|
|
|
1360 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1361 header->key[header->key_len] = LF;
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 #endif
|
|
|
1365
|
|
130
|
1366 p = u->pipe;
|
|
28
|
1367
|
|
|
1368 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1369 p->output_ctx = r;
|
|
|
1370 p->tag = u->output.tag;
|
|
126
|
1371 p->bufs = u->conf->bufs;
|
|
28
|
1372 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1373 p->upstream = u->peer.connection;
|
|
132
|
1374 p->downstream = c;
|
|
28
|
1375 p->pool = r->pool;
|
|
132
|
1376 p->log = c->log;
|
|
126
|
1377
|
|
28
|
1378 p->cachable = u->cachable;
|
|
|
1379
|
|
50
|
1380 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1381 if (p->temp_file == NULL) {
|
|
28
|
1382 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1383 return;
|
|
|
1384 }
|
|
|
1385
|
|
|
1386 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1387 p->temp_file->file.log = c->log;
|
|
28
|
1388 p->temp_file->path = u->conf->temp_path;
|
|
|
1389 p->temp_file->pool = r->pool;
|
|
126
|
1390
|
|
28
|
1391 if (u->cachable) {
|
|
|
1392 p->temp_file->persistent = 1;
|
|
|
1393 } else {
|
|
|
1394 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1395 "to a temporary file";
|
|
|
1396 }
|
|
|
1397
|
|
|
1398 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1399 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1400
|
|
50
|
1401 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1402 if (p->preread_bufs == NULL) {
|
|
28
|
1403 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1404 return;
|
|
|
1405 }
|
|
130
|
1406 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1407 p->preread_bufs->next = NULL;
|
|
130
|
1408 u->buffer.recycled = 1;
|
|
|
1409
|
|
|
1410 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1411
|
|
|
1412 if (u->cachable) {
|
|
|
1413 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1414 if (p->buf_to_file == NULL) {
|
|
|
1415 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1416 return;
|
|
|
1417 }
|
|
130
|
1418 p->buf_to_file->pos = u->buffer.start;
|
|
|
1419 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1420 p->buf_to_file->temporary = 1;
|
|
|
1421 }
|
|
|
1422
|
|
|
1423 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1424 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1425 p->single_buf = 1;
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1429 p->free_bufs = 1;
|
|
|
1430
|
|
|
1431 /*
|
|
130
|
1432 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1433 * as though these bytes were read
|
|
|
1434 */
|
|
130
|
1435 u->buffer.last = u->buffer.pos;
|
|
28
|
1436
|
|
|
1437 if (u->conf->cyclic_temp_file) {
|
|
|
1438
|
|
|
1439 /*
|
|
|
1440 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1441 * because the writing a new data may interfere with sendfile()
|
|
|
1442 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1443 */
|
|
|
1444
|
|
|
1445 p->cyclic_temp_file = 1;
|
|
132
|
1446 c->sendfile = 0;
|
|
28
|
1447
|
|
|
1448 } else {
|
|
|
1449 p->cyclic_temp_file = 0;
|
|
|
1450 }
|
|
|
1451
|
|
|
1452 p->read_timeout = u->conf->read_timeout;
|
|
|
1453 p->send_timeout = clcf->send_timeout;
|
|
|
1454 p->send_lowat = clcf->send_lowat;
|
|
|
1455
|
|
58
|
1456 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1457 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1458
|
|
|
1459 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1460 }
|
|
|
1461
|
|
|
1462
|
|
36
|
1463 static void
|
|
130
|
1464 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1465 {
|
|
|
1466 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1467 }
|
|
|
1468
|
|
|
1469
|
|
|
1470 static void
|
|
|
1471 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1472 {
|
|
|
1473 size_t size;
|
|
|
1474 ssize_t n;
|
|
|
1475 ngx_buf_t *b;
|
|
132
|
1476 ngx_int_t rc;
|
|
130
|
1477 ngx_uint_t do_write;
|
|
132
|
1478 ngx_connection_t *c, *client;
|
|
130
|
1479 ngx_http_request_t *r;
|
|
|
1480 ngx_http_upstream_t *u;
|
|
|
1481 ngx_http_core_loc_conf_t *clcf;
|
|
|
1482
|
|
|
1483 c = ev->data;
|
|
|
1484
|
|
|
1485 if (ev->write) {
|
|
|
1486 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1487 "http upstream process non buffered downstream");
|
|
|
1488 c->log->action = "sending to client";
|
|
|
1489
|
|
|
1490 } else {
|
|
|
1491 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1492 "http upstream process non buffered upstream");
|
|
|
1493 c->log->action = "reading upstream";
|
|
|
1494 }
|
|
|
1495
|
|
|
1496 if (ev->timedout) {
|
|
|
1497 if (ev->write) {
|
|
|
1498 c->timedout = 1;
|
|
160
|
1499 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1500
|
|
130
|
1501 } else {
|
|
160
|
1502 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1503 }
|
|
|
1504 }
|
|
|
1505
|
|
|
1506 r = c->data;
|
|
|
1507 u = r->upstream;
|
|
132
|
1508 client = r->connection;
|
|
130
|
1509
|
|
|
1510 b = &u->buffer;
|
|
|
1511
|
|
|
1512 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1513
|
|
|
1514 do_write = ev->write;
|
|
|
1515
|
|
|
1516 for ( ;; ) {
|
|
|
1517
|
|
|
1518 if (do_write) {
|
|
|
1519
|
|
|
1520 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1521 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1522
|
|
|
1523 if (client->destroyed) {
|
|
|
1524 return;
|
|
|
1525 }
|
|
|
1526
|
|
|
1527 if (rc == NGX_ERROR) {
|
|
130
|
1528 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1529 return;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1533 &u->out_bufs, u->output.tag);
|
|
|
1534 }
|
|
|
1535
|
|
|
1536 if (u->busy_bufs == NULL) {
|
|
|
1537
|
|
|
1538 if (u->length == 0
|
|
|
1539 || u->peer.connection->read->eof
|
|
|
1540 || u->peer.connection->read->error)
|
|
|
1541 {
|
|
|
1542 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1543 return;
|
|
|
1544 }
|
|
|
1545
|
|
|
1546 b->pos = b->start;
|
|
|
1547 b->last = b->start;
|
|
|
1548 }
|
|
|
1549 }
|
|
|
1550
|
|
|
1551 size = b->end - b->last;
|
|
|
1552
|
|
|
1553 if (size > u->length) {
|
|
|
1554 size = u->length;
|
|
|
1555 }
|
|
|
1556
|
|
|
1557 if (size && u->peer.connection->read->ready) {
|
|
|
1558 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1559
|
|
|
1560 if (n == NGX_AGAIN) {
|
|
|
1561 break;
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 if (n > 0) {
|
|
|
1565 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1566 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1567 return;
|
|
|
1568 }
|
|
|
1569 }
|
|
|
1570
|
|
|
1571 do_write = 1;
|
|
|
1572
|
|
|
1573 continue;
|
|
|
1574 }
|
|
|
1575
|
|
|
1576 break;
|
|
|
1577 }
|
|
|
1578
|
|
132
|
1579 if (client->data == r) {
|
|
|
1580 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1581 == NGX_ERROR)
|
|
|
1582 {
|
|
|
1583 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1584 return;
|
|
|
1585 }
|
|
130
|
1586 }
|
|
|
1587
|
|
132
|
1588 if (client->write->active) {
|
|
|
1589 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1590
|
|
|
1591 } else if (client->write->timer_set) {
|
|
|
1592 ngx_del_timer(client->write);
|
|
130
|
1593 }
|
|
|
1594
|
|
|
1595 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1596 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1597 return;
|
|
|
1598 }
|
|
|
1599
|
|
|
1600 if (u->peer.connection->read->active) {
|
|
|
1601 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1602
|
|
132
|
1603 } else if (u->peer.connection->read->timer_set) {
|
|
|
1604 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1605 }
|
|
|
1606 }
|
|
|
1607
|
|
|
1608
|
|
|
1609 static ngx_int_t
|
|
|
1610 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1611 {
|
|
|
1612 return NGX_OK;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615
|
|
|
1616 static ngx_int_t
|
|
|
1617 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1618 {
|
|
|
1619 ngx_http_request_t *r = data;
|
|
|
1620
|
|
|
1621 ngx_buf_t *b;
|
|
|
1622 ngx_chain_t *cl, **ll;
|
|
|
1623 ngx_http_upstream_t *u;
|
|
|
1624
|
|
|
1625 u = r->upstream;
|
|
|
1626
|
|
|
1627 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1628 ll = &cl->next;
|
|
|
1629 }
|
|
|
1630
|
|
|
1631 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1632 if (cl == NULL) {
|
|
|
1633 return NGX_ERROR;
|
|
|
1634 }
|
|
|
1635
|
|
|
1636 *ll = cl;
|
|
|
1637
|
|
|
1638 cl->buf->flush = 1;
|
|
|
1639 cl->buf->memory = 1;
|
|
|
1640
|
|
|
1641 b = &u->buffer;
|
|
|
1642
|
|
|
1643 cl->buf->pos = b->last;
|
|
|
1644 b->last += bytes;
|
|
|
1645 cl->buf->last = b->last;
|
|
|
1646
|
|
|
1647 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1648 return NGX_OK;
|
|
|
1649 }
|
|
|
1650
|
|
|
1651 u->length -= bytes;
|
|
|
1652
|
|
|
1653 return NGX_OK;
|
|
|
1654 }
|
|
|
1655
|
|
|
1656
|
|
|
1657 static void
|
|
58
|
1658 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1659 {
|
|
|
1660 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1661 }
|
|
|
1662
|
|
|
1663
|
|
|
1664 static void
|
|
36
|
1665 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1666 {
|
|
58
|
1667 ngx_event_pipe_t *p;
|
|
132
|
1668 ngx_connection_t *c, *downstream;
|
|
28
|
1669 ngx_http_request_t *r;
|
|
|
1670 ngx_http_upstream_t *u;
|
|
|
1671
|
|
|
1672 c = ev->data;
|
|
|
1673 r = c->data;
|
|
|
1674 u = r->upstream;
|
|
132
|
1675 downstream = r->connection;
|
|
28
|
1676
|
|
|
1677 if (ev->write) {
|
|
32
|
1678 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1679 "http upstream process downstream");
|
|
|
1680 c->log->action = "sending to client";
|
|
126
|
1681
|
|
28
|
1682 } else {
|
|
32
|
1683 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1684 "http upstream process upstream");
|
|
|
1685 c->log->action = "reading upstream";
|
|
28
|
1686 }
|
|
126
|
1687
|
|
130
|
1688 p = u->pipe;
|
|
28
|
1689
|
|
|
1690 if (ev->timedout) {
|
|
|
1691 if (ev->write) {
|
|
76
|
1692 if (ev->delayed) {
|
|
|
1693
|
|
|
1694 ev->timedout = 0;
|
|
|
1695 ev->delayed = 0;
|
|
|
1696
|
|
|
1697 if (!ev->ready) {
|
|
|
1698 ngx_add_timer(ev, p->send_timeout);
|
|
|
1699
|
|
|
1700 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1701 {
|
|
|
1702 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1703 return;
|
|
|
1704 }
|
|
|
1705
|
|
|
1706 return;
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1710
|
|
|
1711 if (downstream->destroyed) {
|
|
|
1712 return;
|
|
|
1713 }
|
|
|
1714
|
|
76
|
1715 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1716 return;
|
|
|
1717 }
|
|
|
1718
|
|
|
1719 } else {
|
|
|
1720 p->downstream_error = 1;
|
|
126
|
1721 c->timedout = 1;
|
|
160
|
1722 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1723 }
|
|
28
|
1724
|
|
|
1725 } else {
|
|
126
|
1726 p->upstream_error = 1;
|
|
160
|
1727 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1728 }
|
|
|
1729
|
|
|
1730 } else {
|
|
76
|
1731 if (ev->write && ev->delayed) {
|
|
|
1732 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1733 "http downstream delayed");
|
|
|
1734
|
|
|
1735 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1736 return;
|
|
|
1737 }
|
|
|
1738
|
|
|
1739 return;
|
|
|
1740 }
|
|
|
1741
|
|
28
|
1742 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1743
|
|
|
1744 if (downstream->destroyed) {
|
|
|
1745 return;
|
|
|
1746 }
|
|
|
1747
|
|
28
|
1748 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1749 return;
|
|
|
1750 }
|
|
|
1751 }
|
|
126
|
1752
|
|
28
|
1753 if (u->peer.connection) {
|
|
|
1754
|
|
|
1755 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1756
|
|
|
1757 if (p->upstream_done && u->cachable) {
|
|
|
1758 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1759 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1760 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1761 return;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 } else if (p->upstream_eof && u->cachable) {
|
|
|
1765
|
|
|
1766 /* TODO: check length & update cache */
|
|
|
1767
|
|
|
1768 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1769 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1770 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1771 return;
|
|
|
1772 }
|
|
|
1773 }
|
|
|
1774
|
|
|
1775 #endif
|
|
|
1776
|
|
|
1777 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1778 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1779 "http upstream exit: %p", p->out);
|
|
28
|
1780 #if 0
|
|
|
1781 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1782 #endif
|
|
|
1783 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1784 return;
|
|
|
1785 }
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 if (p->downstream_error) {
|
|
32
|
1789 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1790 "http upstream downstream error");
|
|
28
|
1791
|
|
|
1792 if (!u->cachable && u->peer.connection) {
|
|
|
1793 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1794 }
|
|
|
1795 }
|
|
|
1796 }
|
|
|
1797
|
|
|
1798
|
|
36
|
1799 static void
|
|
|
1800 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1801 {
|
|
|
1802 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1803 "http upstream dummy handler");
|
|
|
1804 }
|
|
|
1805
|
|
|
1806
|
|
36
|
1807 static void
|
|
|
1808 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1809 ngx_uint_t ft_type)
|
|
28
|
1810 {
|
|
74
|
1811 ngx_uint_t status, down;
|
|
28
|
1812
|
|
|
1813 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1814 "http next upstream, %xD", ft_type);
|
|
|
1815
|
|
|
1816 #if 0
|
|
|
1817 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1818 #endif
|
|
|
1819
|
|
74
|
1820 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1821 down = 0;
|
|
|
1822 } else {
|
|
|
1823 down = 1;
|
|
28
|
1824 }
|
|
74
|
1825
|
|
|
1826 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1827
|
|
28
|
1828 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1829 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1830 "upstream timed out");
|
|
|
1831 }
|
|
126
|
1832
|
|
28
|
1833 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1834 status = 0;
|
|
|
1835
|
|
|
1836 } else {
|
|
|
1837 switch(ft_type) {
|
|
|
1838
|
|
|
1839 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1840 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1841 break;
|
|
|
1842
|
|
|
1843 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1844 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1845 break;
|
|
|
1846
|
|
|
1847 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1848 status = NGX_HTTP_NOT_FOUND;
|
|
|
1849 break;
|
|
|
1850
|
|
|
1851 /*
|
|
|
1852 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1853 * never reach here
|
|
|
1854 */
|
|
|
1855
|
|
|
1856 default:
|
|
|
1857 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1858 }
|
|
|
1859 }
|
|
|
1860
|
|
132
|
1861 if (r->connection->error) {
|
|
28
|
1862 ngx_http_upstream_finalize_request(r, u,
|
|
|
1863 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1864 return;
|
|
|
1865 }
|
|
|
1866
|
|
|
1867 if (status) {
|
|
|
1868 u->state->status = status;
|
|
|
1869
|
|
74
|
1870 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1871
|
|
|
1872 #if (NGX_HTTP_CACHE)
|
|
|
1873
|
|
|
1874 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1875 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1876 ngx_http_send_cached_response(r));
|
|
28
|
1877 return;
|
|
|
1878 }
|
|
|
1879
|
|
|
1880 #endif
|
|
|
1881
|
|
|
1882 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1883 return;
|
|
|
1884 }
|
|
|
1885 }
|
|
|
1886
|
|
|
1887 if (u->peer.connection) {
|
|
|
1888 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1889 "close http upstream connection: %d",
|
|
|
1890 u->peer.connection->fd);
|
|
126
|
1891 #if (NGX_HTTP_SSL)
|
|
|
1892 if (u->peer.connection->ssl) {
|
|
|
1893 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1894 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1895 }
|
|
|
1896 #endif
|
|
28
|
1897 ngx_close_connection(u->peer.connection);
|
|
|
1898 }
|
|
|
1899
|
|
|
1900 #if 0
|
|
|
1901 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1902 ngx_http_upstream_busy_lock(p);
|
|
|
1903 return;
|
|
|
1904 }
|
|
|
1905 #endif
|
|
|
1906
|
|
|
1907 ngx_http_upstream_connect(r, u);
|
|
|
1908 }
|
|
|
1909
|
|
|
1910
|
|
36
|
1911 static void
|
|
118
|
1912 ngx_http_upstream_cleanup(void *data)
|
|
|
1913 {
|
|
|
1914 ngx_http_request_t *r = data;
|
|
|
1915
|
|
|
1916 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1917 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1918
|
|
|
1919 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1920 }
|
|
|
1921
|
|
|
1922
|
|
|
1923 static void
|
|
36
|
1924 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1925 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1926 {
|
|
112
|
1927 ngx_time_t *tp;
|
|
|
1928
|
|
32
|
1929 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1930 "finalize http upstream request: %i", rc);
|
|
28
|
1931
|
|
118
|
1932 *u->cleanup = NULL;
|
|
|
1933
|
|
112
|
1934 if (u->state->response_time) {
|
|
|
1935 tp = ngx_timeofday();
|
|
|
1936 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1937 - u->state->response_time;
|
|
|
1938 }
|
|
|
1939
|
|
28
|
1940 u->finalize_request(r, rc);
|
|
|
1941
|
|
|
1942 if (u->peer.connection) {
|
|
|
1943 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1944 "close http upstream connection: %d",
|
|
|
1945 u->peer.connection->fd);
|
|
126
|
1946 #if (NGX_HTTP_SSL)
|
|
|
1947
|
|
|
1948 /* TODO: do not shutdown persistent connection */
|
|
|
1949
|
|
|
1950 if (u->peer.connection->ssl) {
|
|
|
1951 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1952 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1953 }
|
|
|
1954 #endif
|
|
28
|
1955 ngx_close_connection(u->peer.connection);
|
|
|
1956 }
|
|
|
1957
|
|
32
|
1958 u->peer.connection = NULL;
|
|
|
1959
|
|
112
|
1960 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1961 {
|
|
|
1962 rc = 0;
|
|
|
1963 }
|
|
|
1964
|
|
130
|
1965 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1966 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1967 "http upstream temp fd: %d",
|
|
130
|
1968 u->pipe->temp_file->file.fd);
|
|
28
|
1969 }
|
|
|
1970
|
|
|
1971 #if 0
|
|
|
1972 if (u->cache) {
|
|
|
1973 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1974 "http upstream cache fd: %d",
|
|
28
|
1975 u->cache->ctx.file.fd);
|
|
|
1976 }
|
|
|
1977 #endif
|
|
|
1978
|
|
58
|
1979 r->log_handler = u->saved_log_handler;
|
|
64
|
1980
|
|
|
1981 if (rc == NGX_DECLINED) {
|
|
|
1982 return;
|
|
|
1983 }
|
|
|
1984
|
|
32
|
1985 r->connection->log->action = "sending to client";
|
|
|
1986
|
|
178
|
1987 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
1988 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
1989 }
|
|
|
1990
|
|
|
1991 ngx_http_finalize_request(r, rc);
|
|
|
1992 }
|
|
|
1993
|
|
|
1994
|
|
126
|
1995 #if (NGX_HTTP_SSL)
|
|
|
1996
|
|
|
1997 static void
|
|
|
1998 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1999 {
|
|
|
2000 /* lock peer mutex */
|
|
|
2001
|
|
|
2002 if (peer->ssl_session) {
|
|
|
2003 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2004 }
|
|
|
2005
|
|
|
2006 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2007
|
|
|
2008 /* unlock peer mutex */
|
|
|
2009
|
|
|
2010 /*
|
|
|
2011 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2012 * and do not wait its "close notify" shutdown alert.
|
|
|
2013 * It is acceptable according to the TLS standard.
|
|
|
2014 */
|
|
|
2015
|
|
|
2016 c->ssl->no_wait_shutdown = 1;
|
|
|
2017
|
|
|
2018 (void) ngx_ssl_shutdown(c);
|
|
|
2019 }
|
|
|
2020
|
|
|
2021 #endif
|
|
|
2022
|
|
|
2023
|
|
58
|
2024 static ngx_int_t
|
|
|
2025 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2026 ngx_uint_t offset)
|
|
126
|
2027 {
|
|
58
|
2028 ngx_table_elt_t **ph;
|
|
126
|
2029
|
|
58
|
2030 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2031
|
|
|
2032 if (*ph == NULL) {
|
|
|
2033 *ph = h;
|
|
|
2034 }
|
|
|
2035
|
|
|
2036 return NGX_OK;
|
|
|
2037 }
|
|
|
2038
|
|
|
2039
|
|
|
2040 static ngx_int_t
|
|
|
2041 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2042 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2043 {
|
|
|
2044 ngx_array_t *pa;
|
|
|
2045 ngx_table_elt_t **ph;
|
|
|
2046
|
|
|
2047 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2048
|
|
|
2049 if (pa->elts == NULL) {
|
|
|
2050 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2051 {
|
|
|
2052 return NGX_ERROR;
|
|
|
2053 }
|
|
|
2054 }
|
|
|
2055
|
|
|
2056 ph = ngx_array_push(pa);
|
|
|
2057 if (ph == NULL) {
|
|
|
2058 return NGX_ERROR;
|
|
|
2059 }
|
|
|
2060
|
|
|
2061 *ph = h;
|
|
|
2062
|
|
|
2063 return NGX_OK;
|
|
|
2064 }
|
|
|
2065
|
|
|
2066
|
|
|
2067 static ngx_int_t
|
|
|
2068 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2069 ngx_uint_t offset)
|
|
|
2070 {
|
|
|
2071 return NGX_OK;
|
|
|
2072 }
|
|
|
2073
|
|
|
2074
|
|
|
2075 static ngx_int_t
|
|
76
|
2076 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2077 ngx_uint_t offset)
|
|
126
|
2078 {
|
|
76
|
2079 ngx_int_t n;
|
|
|
2080
|
|
|
2081 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2082
|
|
|
2083 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2084
|
|
|
2085 if (n != NGX_ERROR) {
|
|
|
2086 r->limit_rate = (size_t) n;
|
|
|
2087 }
|
|
|
2088
|
|
|
2089 return NGX_OK;
|
|
|
2090 }
|
|
|
2091
|
|
|
2092
|
|
|
2093 static ngx_int_t
|
|
198
|
2094 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2095 ngx_uint_t offset)
|
|
|
2096 {
|
|
|
2097 u_char c0, c1, c2;
|
|
|
2098
|
|
|
2099 if (r->upstream->conf->change_buffering) {
|
|
|
2100
|
|
|
2101 if (h->value.len == 2) {
|
|
|
2102 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2103 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2104
|
|
|
2105 if (c0 == 'n' && c1 == 'o') {
|
|
|
2106 r->upstream->buffering = 0;
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 } else if (h->value.len == 3) {
|
|
|
2110 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2111 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2112 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2113
|
|
|
2114 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2115 r->upstream->buffering = 1;
|
|
|
2116 }
|
|
|
2117 }
|
|
|
2118 }
|
|
|
2119
|
|
|
2120 return NGX_OK;
|
|
|
2121 }
|
|
|
2122
|
|
|
2123
|
|
|
2124 static ngx_int_t
|
|
58
|
2125 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2126 ngx_uint_t offset)
|
|
|
2127 {
|
|
122
|
2128 ngx_table_elt_t *ho, **ph;
|
|
58
|
2129
|
|
|
2130 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2131 if (ho == NULL) {
|
|
|
2132 return NGX_ERROR;
|
|
|
2133 }
|
|
|
2134
|
|
|
2135 *ho = *h;
|
|
|
2136
|
|
122
|
2137 if (offset) {
|
|
|
2138 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2139 *ph = ho;
|
|
|
2140 }
|
|
|
2141
|
|
58
|
2142 return NGX_OK;
|
|
|
2143 }
|
|
|
2144
|
|
|
2145
|
|
|
2146 static ngx_int_t
|
|
|
2147 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2148 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2149 {
|
|
|
2150 ngx_array_t *pa;
|
|
|
2151 ngx_table_elt_t *ho, **ph;
|
|
|
2152
|
|
|
2153 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2154
|
|
|
2155 if (pa->elts == NULL) {
|
|
|
2156 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2157 {
|
|
|
2158 return NGX_ERROR;
|
|
|
2159 }
|
|
|
2160 }
|
|
|
2161
|
|
|
2162 ph = ngx_array_push(pa);
|
|
|
2163 if (ph == NULL) {
|
|
|
2164 return NGX_ERROR;
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2168 if (ho == NULL) {
|
|
|
2169 return NGX_ERROR;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172 *ho = *h;
|
|
|
2173 *ph = ho;
|
|
|
2174
|
|
|
2175 return NGX_OK;
|
|
|
2176 }
|
|
|
2177
|
|
|
2178
|
|
|
2179 static ngx_int_t
|
|
|
2180 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2181 ngx_uint_t offset)
|
|
|
2182 {
|
|
|
2183 r->headers_out.content_type = h->value;
|
|
|
2184
|
|
|
2185 return NGX_OK;
|
|
|
2186 }
|
|
|
2187
|
|
|
2188
|
|
|
2189 static ngx_int_t
|
|
|
2190 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2191 ngx_uint_t offset)
|
|
|
2192 {
|
|
|
2193 ngx_table_elt_t *ho;
|
|
|
2194
|
|
|
2195 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2196 if (ho == NULL) {
|
|
|
2197 return NGX_ERROR;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 *ho = *h;
|
|
|
2201
|
|
|
2202 r->headers_out.content_length = ho;
|
|
|
2203 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2204
|
|
|
2205 return NGX_OK;
|
|
|
2206 }
|
|
|
2207
|
|
|
2208
|
|
|
2209 static ngx_int_t
|
|
|
2210 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2211 ngx_uint_t offset)
|
|
|
2212 {
|
|
|
2213 ngx_int_t rc;
|
|
|
2214 ngx_table_elt_t *ho;
|
|
|
2215
|
|
|
2216 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2217 if (ho == NULL) {
|
|
|
2218 return NGX_ERROR;
|
|
|
2219 }
|
|
|
2220
|
|
|
2221 *ho = *h;
|
|
|
2222
|
|
|
2223 if (r->upstream->rewrite_redirect) {
|
|
|
2224 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2225
|
|
78
|
2226 if (rc == NGX_DECLINED) {
|
|
|
2227 return NGX_OK;
|
|
|
2228 }
|
|
|
2229
|
|
58
|
2230 if (rc == NGX_OK) {
|
|
|
2231 r->headers_out.location = ho;
|
|
|
2232
|
|
|
2233 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2234 "rewritten location: \"%V\"", &ho->value);
|
|
|
2235 }
|
|
|
2236
|
|
|
2237 return rc;
|
|
|
2238 }
|
|
|
2239
|
|
|
2240 /*
|
|
|
2241 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2242 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2243 */
|
|
|
2244
|
|
|
2245 return NGX_OK;
|
|
|
2246 }
|
|
|
2247
|
|
|
2248
|
|
|
2249 static ngx_int_t
|
|
|
2250 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2251 ngx_uint_t offset)
|
|
|
2252 {
|
|
|
2253 u_char *p;
|
|
|
2254 ngx_int_t rc;
|
|
|
2255 ngx_table_elt_t *ho;
|
|
|
2256
|
|
|
2257 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2258 if (ho == NULL) {
|
|
|
2259 return NGX_ERROR;
|
|
|
2260 }
|
|
|
2261
|
|
|
2262 *ho = *h;
|
|
|
2263
|
|
|
2264 if (r->upstream->rewrite_redirect) {
|
|
|
2265
|
|
|
2266 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2267
|
|
|
2268 if (p) {
|
|
|
2269 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2270
|
|
|
2271 } else {
|
|
|
2272 return NGX_OK;
|
|
|
2273 }
|
|
|
2274
|
|
78
|
2275 if (rc == NGX_DECLINED) {
|
|
|
2276 return NGX_OK;
|
|
|
2277 }
|
|
|
2278
|
|
58
|
2279 #if (NGX_DEBUG)
|
|
|
2280 if (rc == NGX_OK) {
|
|
|
2281 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2282 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2283 }
|
|
|
2284 #endif
|
|
|
2285
|
|
|
2286 return rc;
|
|
|
2287 }
|
|
|
2288
|
|
|
2289 return NGX_OK;
|
|
|
2290 }
|
|
|
2291
|
|
|
2292
|
|
|
2293 #if (NGX_HTTP_GZIP)
|
|
|
2294
|
|
|
2295 static ngx_int_t
|
|
|
2296 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2297 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2298 {
|
|
|
2299 ngx_table_elt_t *ho;
|
|
|
2300
|
|
|
2301 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2302 if (ho == NULL) {
|
|
|
2303 return NGX_ERROR;
|
|
|
2304 }
|
|
|
2305
|
|
|
2306 *ho = *h;
|
|
|
2307
|
|
|
2308 r->headers_out.content_encoding = ho;
|
|
|
2309
|
|
|
2310 return NGX_OK;
|
|
|
2311 }
|
|
|
2312
|
|
|
2313 #endif
|
|
|
2314
|
|
|
2315
|
|
36
|
2316 static size_t
|
|
|
2317 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2318 {
|
|
|
2319 if (r->upstream) {
|
|
|
2320 return r->upstream->states.nelts * (3 + 2);
|
|
|
2321 }
|
|
|
2322
|
|
|
2323 return 1;
|
|
|
2324 }
|
|
|
2325
|
|
|
2326
|
|
36
|
2327 static u_char *
|
|
|
2328 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2329 ngx_http_log_op_t *op)
|
|
28
|
2330 {
|
|
|
2331 ngx_uint_t i;
|
|
|
2332 ngx_http_upstream_t *u;
|
|
|
2333 ngx_http_upstream_state_t *state;
|
|
|
2334
|
|
|
2335 u = r->upstream;
|
|
|
2336
|
|
122
|
2337 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2338 *buf = '-';
|
|
|
2339 return buf + 1;
|
|
|
2340 }
|
|
|
2341
|
|
|
2342 i = 0;
|
|
|
2343 state = u->states.elts;
|
|
|
2344
|
|
|
2345 for ( ;; ) {
|
|
|
2346 if (state[i].status == 0) {
|
|
|
2347 *buf++ = '-';
|
|
|
2348
|
|
|
2349 } else {
|
|
|
2350 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2351 }
|
|
|
2352
|
|
|
2353 if (++i == u->states.nelts) {
|
|
|
2354 return buf;
|
|
|
2355 }
|
|
|
2356
|
|
|
2357 *buf++ = ',';
|
|
|
2358 *buf++ = ' ';
|
|
|
2359 }
|
|
|
2360 }
|
|
|
2361
|
|
|
2362
|
|
122
|
2363 static size_t
|
|
|
2364 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2365 uintptr_t data)
|
|
|
2366 {
|
|
|
2367 if (r->upstream) {
|
|
|
2368 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2369 }
|
|
|
2370
|
|
|
2371 return 1;
|
|
|
2372 }
|
|
|
2373
|
|
|
2374
|
|
58
|
2375 static u_char *
|
|
112
|
2376 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2377 ngx_http_log_op_t *op)
|
|
|
2378 {
|
|
|
2379 ngx_uint_t i;
|
|
|
2380 ngx_http_upstream_t *u;
|
|
|
2381 ngx_http_upstream_state_t *state;
|
|
|
2382
|
|
|
2383 u = r->upstream;
|
|
|
2384
|
|
122
|
2385 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2386 *buf = '-';
|
|
|
2387 return buf + 1;
|
|
|
2388 }
|
|
|
2389
|
|
|
2390 i = 0;
|
|
|
2391 state = u->states.elts;
|
|
|
2392
|
|
|
2393 for ( ;; ) {
|
|
|
2394 if (state[i].status == 0) {
|
|
|
2395 *buf++ = '-';
|
|
|
2396
|
|
|
2397 } else {
|
|
|
2398 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2399 state[i].response_time / 1000,
|
|
|
2400 state[i].response_time % 1000);
|
|
|
2401 }
|
|
|
2402
|
|
|
2403 if (++i == u->states.nelts) {
|
|
|
2404 return buf;
|
|
|
2405 }
|
|
|
2406
|
|
|
2407 *buf++ = ',';
|
|
|
2408 *buf++ = ' ';
|
|
|
2409 }
|
|
|
2410 }
|
|
|
2411
|
|
|
2412
|
|
|
2413 static u_char *
|
|
58
|
2414 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2415 {
|
|
|
2416 u_char *p;
|
|
|
2417 ngx_http_upstream_t *u;
|
|
|
2418 ngx_peer_connection_t *peer;
|
|
|
2419
|
|
|
2420 u = r->upstream;
|
|
|
2421 peer = &u->peer;
|
|
|
2422
|
|
|
2423 p = ngx_snprintf(buf, len,
|
|
58
|
2424 ", server: %V, URL: \"%V\","
|
|
118
|
2425 " upstream: \"%V%V%s%V\"",
|
|
52
|
2426 &r->server_name,
|
|
28
|
2427 &r->unparsed_uri,
|
|
58
|
2428 &u->conf->schema,
|
|
28
|
2429 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2430 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2431 &u->uri);
|
|
28
|
2432 len -= p - buf;
|
|
|
2433 buf = p;
|
|
|
2434
|
|
54
|
2435 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2436 }
|
|
|
2437
|
|
|
2438
|
|
36
|
2439 static ngx_int_t
|
|
122
|
2440 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2441 {
|
|
122
|
2442 ngx_http_variable_t *var, *v;
|
|
28
|
2443 ngx_http_log_op_name_t *op;
|
|
|
2444
|
|
122
|
2445 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2446 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2447 if (var == NULL) {
|
|
|
2448 return NGX_ERROR;
|
|
|
2449 }
|
|
|
2450
|
|
186
|
2451 var->get_handler = v->get_handler;
|
|
122
|
2452 var->data = v->data;
|
|
|
2453 }
|
|
|
2454
|
|
28
|
2455 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2456 op->run = NULL;
|
|
|
2457
|
|
|
2458 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2459 if (op->name.len == 0) {
|
|
|
2460 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2461 }
|
|
|
2462 }
|
|
|
2463
|
|
|
2464 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2465
|
|
|
2466 return NGX_OK;
|
|
|
2467 }
|
|
58
|
2468
|
|
|
2469
|
|
122
|
2470 static ngx_int_t
|
|
|
2471 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2472 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2473 {
|
|
|
2474 u_char *p;
|
|
|
2475 size_t len;
|
|
|
2476 ngx_uint_t i;
|
|
|
2477 ngx_http_upstream_t *u;
|
|
|
2478 ngx_http_upstream_state_t *state;
|
|
|
2479
|
|
|
2480 v->valid = 1;
|
|
|
2481 v->no_cachable = 0;
|
|
|
2482 v->not_found = 0;
|
|
|
2483
|
|
|
2484 u = r->upstream;
|
|
|
2485
|
|
|
2486 if (u == NULL || u->states.nelts == 0) {
|
|
|
2487 v->not_found = 1;
|
|
|
2488 return NGX_OK;
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 len = u->states.nelts * (3 + 2);
|
|
|
2492
|
|
|
2493 p = ngx_palloc(r->pool, len);
|
|
|
2494 if (p == NULL) {
|
|
|
2495 return NGX_ERROR;
|
|
|
2496 }
|
|
|
2497
|
|
|
2498 v->data = p;
|
|
|
2499
|
|
|
2500 i = 0;
|
|
|
2501 state = u->states.elts;
|
|
|
2502
|
|
|
2503 for ( ;; ) {
|
|
|
2504 if (state[i].status == 0) {
|
|
|
2505 *p++ = '-';
|
|
|
2506
|
|
|
2507 } else {
|
|
|
2508 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2509 }
|
|
|
2510
|
|
|
2511 if (++i == u->states.nelts) {
|
|
|
2512 break;
|
|
|
2513 }
|
|
|
2514
|
|
|
2515 *p++ = ',';
|
|
|
2516 *p++ = ' ';
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 v->len = p - v->data;
|
|
|
2520
|
|
|
2521 return NGX_OK;
|
|
|
2522 }
|
|
|
2523
|
|
|
2524
|
|
|
2525 static ngx_int_t
|
|
|
2526 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2527 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2528 {
|
|
|
2529 u_char *p;
|
|
|
2530 size_t len;
|
|
|
2531 ngx_uint_t i;
|
|
|
2532 ngx_http_upstream_t *u;
|
|
|
2533 ngx_http_upstream_state_t *state;
|
|
|
2534
|
|
|
2535 v->valid = 1;
|
|
|
2536 v->no_cachable = 0;
|
|
|
2537 v->not_found = 0;
|
|
|
2538
|
|
|
2539 u = r->upstream;
|
|
|
2540
|
|
|
2541 if (u == NULL || u->states.nelts == 0) {
|
|
|
2542 v->not_found = 1;
|
|
|
2543 return NGX_OK;
|
|
|
2544 }
|
|
|
2545
|
|
|
2546 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2547
|
|
|
2548 p = ngx_palloc(r->pool, len);
|
|
|
2549 if (p == NULL) {
|
|
|
2550 return NGX_ERROR;
|
|
|
2551 }
|
|
|
2552
|
|
|
2553 v->data = p;
|
|
|
2554
|
|
|
2555 i = 0;
|
|
|
2556 state = u->states.elts;
|
|
|
2557
|
|
|
2558 for ( ;; ) {
|
|
|
2559 if (state[i].status == 0) {
|
|
|
2560 *p++ = '-';
|
|
|
2561
|
|
|
2562 } else {
|
|
|
2563 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2564 state[i].response_time / 1000,
|
|
|
2565 state[i].response_time % 1000);
|
|
|
2566 }
|
|
|
2567
|
|
|
2568 if (++i == u->states.nelts) {
|
|
|
2569 break;
|
|
|
2570 }
|
|
|
2571
|
|
|
2572 *p++ = ',';
|
|
|
2573 *p++ = ' ';
|
|
|
2574 }
|
|
|
2575
|
|
|
2576 v->len = p - v->data;
|
|
|
2577
|
|
|
2578 return NGX_OK;
|
|
|
2579 }
|
|
|
2580
|
|
|
2581
|
|
200
|
2582 static char *
|
|
|
2583 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2584 {
|
|
|
2585 char *rv;
|
|
|
2586 void *mconf;
|
|
|
2587 ngx_str_t *value;
|
|
|
2588 ngx_url_t u;
|
|
|
2589 ngx_uint_t i, j, m, n;
|
|
|
2590 ngx_conf_t pcf;
|
|
|
2591 ngx_peers_t **peers;
|
|
|
2592 ngx_http_module_t *module;
|
|
|
2593 ngx_http_conf_ctx_t *ctx;
|
|
|
2594 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2595
|
|
|
2596 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2597 if (ctx == NULL) {
|
|
|
2598 return NGX_CONF_ERROR;
|
|
|
2599 }
|
|
|
2600
|
|
|
2601 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2602
|
|
|
2603 value = cf->args->elts;
|
|
|
2604 u.host = value[1];
|
|
|
2605
|
|
|
2606 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2607 if (uscf == NULL) {
|
|
|
2608 return NGX_CONF_ERROR;
|
|
|
2609 }
|
|
|
2610
|
|
|
2611 /* the upstream{}'s srv_conf */
|
|
|
2612
|
|
|
2613 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2614 if (ctx->srv_conf == NULL) {
|
|
|
2615 return NGX_CONF_ERROR;
|
|
|
2616 }
|
|
|
2617
|
|
|
2618 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2619
|
|
|
2620
|
|
|
2621 /* the upstream{}'s loc_conf */
|
|
|
2622
|
|
|
2623 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2624 if (ctx->loc_conf == NULL) {
|
|
|
2625 return NGX_CONF_ERROR;
|
|
|
2626 }
|
|
|
2627
|
|
|
2628 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2629 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2630 continue;
|
|
|
2631 }
|
|
|
2632
|
|
|
2633 module = ngx_modules[m]->ctx;
|
|
|
2634
|
|
|
2635 if (module->create_loc_conf) {
|
|
|
2636 mconf = module->create_loc_conf(cf);
|
|
|
2637 if (mconf == NULL) {
|
|
|
2638 return NGX_CONF_ERROR;
|
|
|
2639 }
|
|
|
2640
|
|
|
2641 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2642 }
|
|
|
2643 }
|
|
|
2644
|
|
|
2645
|
|
|
2646 /* parse inside upstream{} */
|
|
|
2647
|
|
|
2648 pcf = *cf;
|
|
|
2649 cf->ctx = ctx;
|
|
|
2650 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2651
|
|
|
2652 rv = ngx_conf_parse(cf, NULL);
|
|
|
2653
|
|
|
2654 *cf = pcf;
|
|
|
2655
|
|
|
2656 if (rv != NGX_CONF_OK) {
|
|
|
2657 return rv;
|
|
|
2658 }
|
|
|
2659
|
|
|
2660 if (uscf->servers == NULL) {
|
|
|
2661 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2662 "no servers are inside upstream");
|
|
|
2663 return NGX_CONF_ERROR;
|
|
|
2664 }
|
|
|
2665
|
|
|
2666 peers = uscf->servers->elts;
|
|
|
2667
|
|
|
2668 if (uscf->servers->nelts == 1) {
|
|
|
2669 uscf->peers = peers[0];
|
|
|
2670 }
|
|
|
2671
|
|
|
2672 n = 0;
|
|
|
2673
|
|
|
2674 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2675 n += peers[i]->number;
|
|
|
2676 }
|
|
|
2677
|
|
|
2678 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2679 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2680 if (uscf->peers == NULL) {
|
|
|
2681 return NGX_CONF_ERROR;
|
|
|
2682 }
|
|
|
2683
|
|
|
2684 uscf->peers->number = n;
|
|
|
2685 uscf->peers->weight = 1;
|
|
|
2686
|
|
|
2687 n = 0;
|
|
|
2688
|
|
|
2689 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2690 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2691 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2692 }
|
|
|
2693 }
|
|
|
2694
|
|
|
2695 return rv;
|
|
|
2696 }
|
|
|
2697
|
|
|
2698
|
|
|
2699 static char *
|
|
|
2700 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2701 {
|
|
|
2702 ngx_http_upstream_srv_conf_t *uscf = conf;
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|
|
2703
|
|
|
2704 ngx_str_t *value;
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|
|
2705 ngx_url_t u;
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|
|
2706 ngx_peers_t **peers;
|
|
|
2707
|
|
|
2708 if (uscf->servers == NULL) {
|
|
|
2709 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2710 if (uscf->servers == NULL) {
|
|
|
2711 return NGX_CONF_ERROR;
|
|
|
2712 }
|
|
|
2713 }
|
|
|
2714
|
|
|
2715 peers = ngx_array_push(uscf->servers);
|
|
|
2716 if (peers == NULL) {
|
|
|
2717 return NGX_CONF_ERROR;
|
|
|
2718 }
|
|
|
2719
|
|
|
2720 value = cf->args->elts;
|
|
|
2721
|
|
|
2722 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2723
|
|
|
2724 u.url = value[1];
|
|
|
2725 u.default_portn = 80;
|
|
|
2726
|
|
|
2727 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2728 if (u.err) {
|
|
|
2729 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2730 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2731 }
|
|
|
2732
|
|
|
2733 return NGX_CONF_ERROR;
|
|
|
2734 }
|
|
|
2735
|
|
|
2736 *peers = u.peers;
|
|
|
2737
|
|
|
2738 return NGX_CONF_OK;
|
|
|
2739 }
|
|
|
2740
|
|
|
2741
|
|
|
2742 ngx_http_upstream_srv_conf_t *
|
|
|
2743 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2744 {
|
|
|
2745 ngx_uint_t i;
|
|
|
2746 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2747 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2748
|
|
|
2749 if (u->upstream) {
|
|
|
2750 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2751 if (u->err) {
|
|
|
2752 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2753 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2754 }
|
|
|
2755
|
|
|
2756 return NULL;
|
|
|
2757 }
|
|
|
2758
|
|
|
2759 if (u->peers) {
|
|
|
2760 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2761 if (uscf == NULL) {
|
|
|
2762 return NULL;
|
|
|
2763 }
|
|
|
2764
|
|
|
2765 uscf->peers = u->peers;
|
|
|
2766
|
|
|
2767 return uscf;
|
|
|
2768 }
|
|
|
2769 }
|
|
|
2770
|
|
|
2771 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2772
|
|
|
2773 uscfp = umcf->upstreams.elts;
|
|
|
2774
|
|
|
2775 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2776 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2777 continue;
|
|
|
2778 }
|
|
|
2779
|
|
|
2780 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2781 == 0)
|
|
|
2782 {
|
|
|
2783 return uscfp[i];
|
|
|
2784 }
|
|
|
2785 }
|
|
|
2786
|
|
|
2787 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2788 if (uscf == NULL) {
|
|
|
2789 return NULL;
|
|
|
2790 }
|
|
|
2791
|
|
|
2792 uscf->host = u->host;
|
|
|
2793 uscf->file_name = cf->conf_file->file.name;
|
|
|
2794 uscf->line = cf->conf_file->line;
|
|
|
2795 uscf->port = u->default_portn;
|
|
|
2796
|
|
|
2797 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2798 if (uscfp == NULL) {
|
|
|
2799 return NULL;
|
|
|
2800 }
|
|
|
2801
|
|
|
2802 *uscfp = uscf;
|
|
|
2803
|
|
|
2804 return uscf;
|
|
|
2805 }
|
|
|
2806
|
|
|
2807
|
|
58
|
2808 static void *
|
|
|
2809 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2810 {
|
|
|
2811 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2812
|
|
|
2813 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2814 if (umcf == NULL) {
|
|
|
2815 return NULL;
|
|
|
2816 }
|
|
|
2817
|
|
200
|
2818 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2819 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2820 != NGX_OK)
|
|
|
2821 {
|
|
|
2822 return NGX_CONF_ERROR;
|
|
|
2823 }
|
|
|
2824
|
|
58
|
2825 return umcf;
|
|
|
2826 }
|
|
|
2827
|
|
|
2828
|
|
|
2829 static char *
|
|
200
|
2830 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
2831 {
|
|
|
2832 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2833
|
|
200
|
2834 ngx_uint_t i;
|
|
|
2835 ngx_array_t headers_in;
|
|
|
2836 ngx_hash_key_t *hk;
|
|
|
2837 ngx_hash_init_t hash;
|
|
|
2838 ngx_http_upstream_header_t *header;
|
|
|
2839 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
2840
|
|
|
2841 uscfp = umcf->upstreams.elts;
|
|
|
2842
|
|
|
2843 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2844 if (uscfp[i]->peers) {
|
|
|
2845 continue;
|
|
|
2846 }
|
|
|
2847
|
|
|
2848 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
|
2849 uscfp[i]->port);
|
|
|
2850
|
|
|
2851 if (uscfp[i]->peers == NULL) {
|
|
|
2852 return NGX_CONF_ERROR;
|
|
|
2853 }
|
|
|
2854
|
|
|
2855 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
2856 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
2857 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
2858 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
2859 uscfp[i]->line);
|
|
|
2860 return NGX_CONF_ERROR;
|
|
|
2861 }
|
|
|
2862 }
|
|
198
|
2863
|
|
|
2864 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2865 != NGX_OK)
|
|
58
|
2866 {
|
|
|
2867 return NGX_CONF_ERROR;
|
|
|
2868 }
|
|
|
2869
|
|
198
|
2870 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2871 hk = ngx_array_push(&headers_in);
|
|
|
2872 if (hk == NULL) {
|
|
|
2873 return NGX_CONF_ERROR;
|
|
|
2874 }
|
|
|
2875
|
|
|
2876 hk->key = header->name;
|
|
|
2877 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2878 hk->value = header;
|
|
|
2879 }
|
|
|
2880
|
|
|
2881 hash.hash = &umcf->headers_in_hash;
|
|
|
2882 hash.key = ngx_hash_key_lc;
|
|
|
2883 hash.max_size = 512;
|
|
|
2884 hash.bucket_size = ngx_cacheline_size;
|
|
|
2885 hash.name = "upstream_headers_in_hash";
|
|
|
2886 hash.pool = cf->pool;
|
|
|
2887 hash.temp_pool = NULL;
|
|
|
2888
|
|
|
2889 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
2890 return NGX_CONF_ERROR;
|
|
|
2891 }
|
|
58
|
2892
|
|
|
2893 return NGX_CONF_OK;
|
|
|
2894 }
|
