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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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25 ngx_http_upstream_t *u);
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130
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26 static void
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27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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31 ssize_t bytes);
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58
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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35 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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37 static void ngx_http_upstream_cleanup(void *data);
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28
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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40
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58
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41 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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43 static ngx_int_t
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44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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45 ngx_table_elt_t *h, ngx_uint_t offset);
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46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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50 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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52 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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54 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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55 ngx_table_elt_t *h, ngx_uint_t offset);
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56 static ngx_int_t
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57 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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63 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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66 ngx_table_elt_t *h, ngx_uint_t offset);
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67 #if (NGX_HTTP_GZIP)
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68 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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70 #endif
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71
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28
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72 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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73 uintptr_t data);
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74 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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75 u_char *buf, ngx_http_log_op_t *op);
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122
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76 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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77 uintptr_t data);
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112
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78 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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79 u_char *buf, ngx_http_log_op_t *op);
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28
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80
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58
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81 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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82 size_t len);
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122
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83
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84 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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85 static ngx_int_t ngx_http_upstream_status_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 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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88 ngx_http_variable_value_t *v, uintptr_t data);
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89
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200
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90 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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91 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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92 void *conf);
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93
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58
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94 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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95 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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96
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126
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97 #if (NGX_HTTP_SSL)
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140
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98 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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99 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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100 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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101 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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102 ngx_peer_t *peer);
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103 #endif
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104
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58
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105
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106 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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107
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108 { ngx_string("Status"),
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109 ngx_http_upstream_process_header_line,
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110 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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111 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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112
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113 { ngx_string("Content-Type"),
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114 ngx_http_upstream_process_header_line,
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115 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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116 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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117
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118 { ngx_string("Content-Length"),
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119 ngx_http_upstream_process_header_line,
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120 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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121 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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122
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123 { ngx_string("Date"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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126 ngx_http_upstream_copy_header_line,
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127 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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128
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129 { ngx_string("Server"),
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130 ngx_http_upstream_process_header_line,
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131 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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132 ngx_http_upstream_copy_header_line,
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133 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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134
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78
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135 { ngx_string("WWW-Authenticate"),
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136 ngx_http_upstream_process_header_line,
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137 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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138 ngx_http_upstream_copy_header_line, 0, 0 },
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139
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58
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140 { ngx_string("Location"),
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141 ngx_http_upstream_ignore_header_line, 0,
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64
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142 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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143
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144 { ngx_string("Refresh"),
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145 ngx_http_upstream_ignore_header_line, 0,
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64
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146 ngx_http_upstream_rewrite_refresh, 0, 0 },
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147
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148 { ngx_string("Set-Cookie"),
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149 ngx_http_upstream_ignore_header_line, 0,
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80
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150 ngx_http_upstream_copy_header_line, 0, 1 },
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151
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152 { ngx_string("Content-Disposition"),
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153 ngx_http_upstream_ignore_header_line, 0,
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154 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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155
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156 { ngx_string("Cache-Control"),
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157 ngx_http_upstream_process_multi_header_lines,
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158 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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159 ngx_http_upstream_copy_multi_header_lines,
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64
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160 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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161
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122
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162 { ngx_string("Expires"),
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163 ngx_http_upstream_process_header_line,
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164 offsetof(ngx_http_upstream_headers_in_t, expires),
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165 ngx_http_upstream_copy_header_line,
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166 offsetof(ngx_http_headers_out_t, expires), 1 },
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167
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126
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168 { ngx_string("Accept-Ranges"),
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169 ngx_http_upstream_process_header_line,
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170 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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171 ngx_http_upstream_copy_header_line,
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172 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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173
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58
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174 { ngx_string("Connection"),
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175 ngx_http_upstream_ignore_header_line, 0,
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64
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176 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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177
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190
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178 { ngx_string("Keep-Alive"),
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179 ngx_http_upstream_ignore_header_line, 0,
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180 ngx_http_upstream_ignore_header_line, 0, 0 },
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181
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58
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182 { ngx_string("X-Powered-By"),
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183 ngx_http_upstream_ignore_header_line, 0,
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198
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184 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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185
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186 { ngx_string("X-Accel-Expires"),
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187 ngx_http_upstream_process_header_line,
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188 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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189 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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190
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191 { ngx_string("X-Accel-Redirect"),
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192 ngx_http_upstream_process_header_line,
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193 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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194 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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195
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76
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196 { ngx_string("X-Accel-Limit-Rate"),
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197 ngx_http_upstream_process_limit_rate, 0,
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198 ngx_http_upstream_ignore_header_line, 0, 0 },
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199
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198
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200 { ngx_string("X-Accel-Buffering"),
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201 ngx_http_upstream_process_buffering, 0,
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202 ngx_http_upstream_ignore_header_line, 0, 0 },
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203
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206
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204 { ngx_string("X-Accel-Charset"),
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205 ngx_http_upstream_process_charset, 0,
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206 ngx_http_upstream_ignore_header_line, 0, 0 },
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207
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58
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208 #if (NGX_HTTP_GZIP)
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209 { ngx_string("Content-Encoding"),
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210 ngx_http_upstream_process_header_line,
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211 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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212 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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213 #endif
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214
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64
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215 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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216 };
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28
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217
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218
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200
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219 static ngx_command_t ngx_http_upstream_commands[] = {
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220
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221 { ngx_string("upstream"),
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222 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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223 ngx_http_upstream,
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224 0,
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225 0,
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226 NULL },
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227
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228 { ngx_string("server"),
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229 NGX_HTTP_UPS_CONF|NGX_CONF_TAKE1,
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230 ngx_http_upstream_server,
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231 NGX_HTTP_SRV_CONF_OFFSET,
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232 0,
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233 NULL },
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234
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235 ngx_null_command
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236 };
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237
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238
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239 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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240 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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241 NULL, /* postconfiguration */
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242
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243 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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244 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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245
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246 NULL, /* create server configuration */
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247 NULL, /* merge server configuration */
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248
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249 NULL, /* create location configuration */
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250 NULL /* merge location configuration */
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251 };
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126
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252
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28
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253
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254 ngx_module_t ngx_http_upstream_module = {
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58
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255 NGX_MODULE_V1,
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28
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256 &ngx_http_upstream_module_ctx, /* module context */
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200
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257 ngx_http_upstream_commands, /* module directives */
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28
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258 NGX_HTTP_MODULE, /* module type */
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90
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259 NULL, /* init master */
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28
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260 NULL, /* init module */
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90
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261 NULL, /* init process */
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262 NULL, /* init thread */
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263 NULL, /* exit thread */
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264 NULL, /* exit process */
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265 NULL, /* exit master */
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266 NGX_MODULE_V1_PADDING
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28
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267 };
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268
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269
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132
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270 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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271 { ngx_string("upstream_status"), 0, NULL,
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122
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272 ngx_http_upstream_log_status_getlen,
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273 ngx_http_upstream_log_status },
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274 { ngx_string("upstream_response_time"), 0, NULL,
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275 ngx_http_upstream_log_response_time_getlen,
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276 ngx_http_upstream_log_response_time },
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28
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277 { ngx_null_string, 0, NULL, NULL, NULL }
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278 };
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279
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280
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122
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281 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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282
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186
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283 { ngx_string("upstream_status"), NULL,
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132
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284 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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285
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186
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286 { ngx_string("upstream_response_time"), NULL,
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132
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287 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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288
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186
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289 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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290 };
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291
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292
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36
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293 void
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294 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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295 {
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112
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296 ngx_time_t *tp;
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58
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297 ngx_connection_t *c;
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118
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298 ngx_http_cleanup_t *cln;
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58
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299 ngx_http_upstream_t *u;
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300 ngx_http_core_loc_conf_t *clcf;
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28
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301
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302 c = r->connection;
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303
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304 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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305 "http init upstream, client timer: %d", c->read->timer_set);
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306
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307 if (c->read->timer_set) {
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308 ngx_del_timer(c->read);
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309 }
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310
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178
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311 u = r->upstream;
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312
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313 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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314 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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315 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
316 }
|
|
126
|
317
|
|
28
|
318 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
319
|
|
|
320 if (!c->write->active) {
|
|
80
|
321 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
322 == NGX_ERROR)
|
|
28
|
323 {
|
|
|
324 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
325 return;
|
|
|
326 }
|
|
|
327 }
|
|
|
328 }
|
|
|
329
|
|
86
|
330 if (r->request_body) {
|
|
|
331 u->request_bufs = r->request_body->bufs;
|
|
|
332 }
|
|
58
|
333
|
|
86
|
334 if (u->create_request(r) != NGX_OK) {
|
|
28
|
335 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
336 return;
|
|
|
337 }
|
|
|
338
|
|
|
339 u->peer.log = r->connection->log;
|
|
58
|
340 u->saved_log_handler = r->log_handler;
|
|
|
341 r->log_handler = ngx_http_upstream_log_error;
|
|
|
342
|
|
|
343 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
344
|
|
|
345 u->output.sendfile = r->connection->sendfile;
|
|
|
346 u->output.pool = r->pool;
|
|
|
347 u->output.bufs.num = 1;
|
|
58
|
348 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
349 u->output.output_filter = ngx_chain_writer;
|
|
|
350 u->output.filter_ctx = &u->writer;
|
|
|
351
|
|
|
352 u->writer.pool = r->pool;
|
|
|
353
|
|
|
354 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
355 sizeof(ngx_http_upstream_state_t))
|
|
|
356 != NGX_OK)
|
|
28
|
357 {
|
|
|
358 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
359 return;
|
|
|
360 }
|
|
|
361
|
|
50
|
362 u->state = ngx_array_push(&u->states);
|
|
|
363 if (u->state == NULL) {
|
|
28
|
364 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
365 return;
|
|
|
366 }
|
|
|
367
|
|
|
368 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
369
|
|
112
|
370 tp = ngx_timeofday();
|
|
|
371
|
|
|
372 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
373
|
|
142
|
374 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
375 if (cln == NULL) {
|
|
|
376 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
377 return;
|
|
|
378 }
|
|
|
379
|
|
|
380 cln->handler = ngx_http_upstream_cleanup;
|
|
|
381 cln->data = r;
|
|
|
382 u->cleanup = &cln->handler;
|
|
|
383
|
|
28
|
384 ngx_http_upstream_connect(r, u);
|
|
|
385 }
|
|
|
386
|
|
|
387
|
|
36
|
388 static void
|
|
58
|
389 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
390 {
|
|
|
391 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
392 }
|
|
|
393
|
|
|
394
|
|
|
395 static void
|
|
|
396 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
397 {
|
|
|
398 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
399 }
|
|
|
400
|
|
|
401
|
|
|
402 static void
|
|
|
403 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
404 ngx_event_t *ev)
|
|
28
|
405 {
|
|
|
406 int n;
|
|
|
407 char buf[1];
|
|
126
|
408 ngx_err_t err;
|
|
28
|
409 ngx_connection_t *c;
|
|
|
410 ngx_http_upstream_t *u;
|
|
|
411
|
|
76
|
412 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
413 "http upstream check client, write event:%d, \"%V\"",
|
|
|
414 ev->write, &r->uri);
|
|
28
|
415
|
|
58
|
416 c = r->connection;
|
|
32
|
417 u = r->upstream;
|
|
|
418
|
|
132
|
419 if (c->error) {
|
|
76
|
420 ngx_http_upstream_finalize_request(r, u,
|
|
|
421 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
422 return;
|
|
|
423 }
|
|
|
424
|
|
32
|
425 if (u->peer.connection == NULL) {
|
|
|
426 return;
|
|
|
427 }
|
|
|
428
|
|
28
|
429 #if (NGX_HAVE_KQUEUE)
|
|
|
430
|
|
|
431 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
432
|
|
|
433 if (!ev->pending_eof) {
|
|
|
434 return;
|
|
|
435 }
|
|
|
436
|
|
|
437 ev->eof = 1;
|
|
132
|
438 c->error = 1;
|
|
28
|
439
|
|
|
440 if (ev->kq_errno) {
|
|
|
441 ev->error = 1;
|
|
|
442 }
|
|
|
443
|
|
|
444 if (!u->cachable && u->peer.connection) {
|
|
|
445 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
446 "kevent() reported that client closed prematurely "
|
|
|
447 "connection, so upstream connection is closed too");
|
|
28
|
448 ngx_http_upstream_finalize_request(r, u,
|
|
|
449 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
450 return;
|
|
|
451 }
|
|
|
452
|
|
|
453 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
454 "kevent() reported that client closed "
|
|
|
455 "prematurely connection");
|
|
|
456
|
|
|
457 if (u->peer.connection == NULL) {
|
|
|
458 ngx_http_upstream_finalize_request(r, u,
|
|
|
459 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 return;
|
|
|
464 }
|
|
|
465
|
|
|
466 #endif
|
|
|
467
|
|
|
468 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
469
|
|
|
470 err = ngx_socket_errno;
|
|
|
471
|
|
|
472 /*
|
|
|
473 * we do not need to disable the write event because
|
|
|
474 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
475 */
|
|
|
476
|
|
|
477 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
478 return;
|
|
|
479 }
|
|
|
480
|
|
|
481 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
482 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
483 ngx_http_upstream_finalize_request(r, u,
|
|
|
484 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
485 return;
|
|
|
486 }
|
|
|
487 }
|
|
|
488
|
|
|
489 if (n > 0) {
|
|
|
490 return;
|
|
|
491 }
|
|
|
492
|
|
|
493 if (n == -1) {
|
|
|
494 if (err == NGX_EAGAIN) {
|
|
|
495 return;
|
|
|
496 }
|
|
|
497
|
|
|
498 ev->error = 1;
|
|
|
499
|
|
32
|
500 } else { /* n == 0 */
|
|
28
|
501 err = 0;
|
|
|
502 }
|
|
|
503
|
|
78
|
504 ev->eof = 1;
|
|
132
|
505 c->error = 1;
|
|
78
|
506
|
|
28
|
507 if (!u->cachable && u->peer.connection) {
|
|
|
508 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
509 "client closed prematurely connection, "
|
|
|
510 "so upstream connection is closed too");
|
|
|
511 ngx_http_upstream_finalize_request(r, u,
|
|
|
512 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
513 return;
|
|
|
514 }
|
|
|
515
|
|
|
516 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
517 "client closed prematurely connection");
|
|
|
518
|
|
|
519 if (u->peer.connection == NULL) {
|
|
|
520 ngx_http_upstream_finalize_request(r, u,
|
|
|
521 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
522 return;
|
|
|
523 }
|
|
|
524 }
|
|
|
525
|
|
|
526
|
|
36
|
527 static void
|
|
|
528 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
529 {
|
|
140
|
530 ngx_int_t rc;
|
|
|
531 ngx_connection_t *c;
|
|
28
|
532
|
|
32
|
533 r->connection->log->action = "connecting to upstream";
|
|
28
|
534
|
|
|
535 r->connection->single_connection = 0;
|
|
|
536
|
|
|
537 rc = ngx_event_connect_peer(&u->peer);
|
|
|
538
|
|
|
539 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
540 "http upstream connect: %i", rc);
|
|
|
541
|
|
|
542 if (rc == NGX_ERROR) {
|
|
|
543 ngx_http_upstream_finalize_request(r, u,
|
|
|
544 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
545 return;
|
|
|
546 }
|
|
|
547
|
|
140
|
548 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
549
|
|
92
|
550 if (rc == NGX_BUSY) {
|
|
|
551 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
552 }
|
|
|
553
|
|
|
554 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
555 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
556 return;
|
|
|
557 }
|
|
|
558
|
|
126
|
559 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
560
|
|
28
|
561 c = u->peer.connection;
|
|
|
562
|
|
|
563 c->data = r;
|
|
140
|
564
|
|
58
|
565 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
566 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
567
|
|
|
568 c->sendfile = r->connection->sendfile;
|
|
|
569
|
|
|
570 c->pool = r->pool;
|
|
|
571 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
572
|
|
|
573 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
574
|
|
|
575 u->writer.out = NULL;
|
|
|
576 u->writer.last = &u->writer.out;
|
|
|
577 u->writer.connection = c;
|
|
|
578 u->writer.limit = 0;
|
|
|
579
|
|
|
580 if (u->request_sent) {
|
|
58
|
581 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
582 ngx_http_upstream_finalize_request(r, u,
|
|
|
583 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
584 return;
|
|
|
585 }
|
|
28
|
586 }
|
|
|
587
|
|
146
|
588 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
589
|
|
|
590 /*
|
|
|
591 * the r->request_body->buf can be reused for one request only,
|
|
|
592 * the subrequests should allocate their own temporay bufs
|
|
|
593 */
|
|
|
594
|
|
|
595 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
596 if (u->output.free == NULL) {
|
|
|
597 ngx_http_upstream_finalize_request(r, u,
|
|
|
598 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
599 return;
|
|
28
|
600 }
|
|
122
|
601
|
|
|
602 u->output.free->buf = r->request_body->buf;
|
|
|
603 u->output.free->next = NULL;
|
|
|
604 u->output.allocated = 1;
|
|
|
605
|
|
|
606 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
607 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
608 r->request_body->buf->tag = u->output.tag;
|
|
28
|
609 }
|
|
|
610
|
|
|
611 u->request_sent = 0;
|
|
|
612
|
|
|
613 if (rc == NGX_AGAIN) {
|
|
|
614 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
615 return;
|
|
|
616 }
|
|
|
617
|
|
126
|
618 #if (NGX_HTTP_SSL)
|
|
|
619
|
|
140
|
620 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
621 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
622 return;
|
|
|
623 }
|
|
|
624
|
|
|
625 #endif
|
|
|
626
|
|
28
|
627 ngx_http_upstream_send_request(r, u);
|
|
|
628 }
|
|
|
629
|
|
|
630
|
|
126
|
631 #if (NGX_HTTP_SSL)
|
|
|
632
|
|
|
633 static void
|
|
140
|
634 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
635 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
636 {
|
|
|
637 ngx_int_t rc;
|
|
|
638 ngx_peer_t *peer;
|
|
|
639
|
|
|
640 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
641 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
642 == NGX_ERROR)
|
|
|
643 {
|
|
|
644 ngx_http_upstream_finalize_request(r, u,
|
|
|
645 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
646 return;
|
|
|
647 }
|
|
|
648
|
|
|
649 c->sendfile = 0;
|
|
168
|
650 u->output.sendfile = 0;
|
|
140
|
651
|
|
|
652 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
653
|
|
|
654 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
655 ngx_http_upstream_finalize_request(r, u,
|
|
|
656 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
657 return;
|
|
|
658 }
|
|
|
659
|
|
190
|
660 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
661
|
|
140
|
662 rc = ngx_ssl_handshake(c);
|
|
|
663
|
|
|
664 if (rc == NGX_AGAIN) {
|
|
|
665 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
666 return;
|
|
|
667 }
|
|
|
668
|
|
|
669 ngx_http_upstream_ssl_handshake(c);
|
|
|
670 }
|
|
|
671
|
|
|
672
|
|
|
673 static void
|
|
126
|
674 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
675 {
|
|
|
676 ngx_http_request_t *r;
|
|
|
677 ngx_http_upstream_t *u;
|
|
|
678
|
|
|
679 r = c->data;
|
|
|
680 u = r->upstream;
|
|
|
681
|
|
|
682 if (c->ssl->handshaked) {
|
|
|
683
|
|
|
684 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
685 c->read->handler = ngx_http_upstream_process_header;
|
|
|
686
|
|
|
687 ngx_http_upstream_send_request(r, u);
|
|
|
688
|
|
|
689 return;
|
|
|
690 }
|
|
|
691
|
|
|
692 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
693
|
|
|
694 }
|
|
|
695
|
|
|
696 #endif
|
|
|
697
|
|
|
698
|
|
58
|
699 static ngx_int_t
|
|
36
|
700 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
701 {
|
|
|
702 ngx_chain_t *cl;
|
|
|
703
|
|
58
|
704 if (u->reinit_request(r) != NGX_OK) {
|
|
|
705 return NGX_ERROR;
|
|
|
706 }
|
|
|
707
|
|
|
708 ngx_memzero(&r->upstream->headers_in,
|
|
|
709 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
710
|
|
|
711 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
712 sizeof(ngx_table_elt_t))
|
|
|
713 != NGX_OK)
|
|
58
|
714 {
|
|
|
715 return NGX_ERROR;
|
|
28
|
716 }
|
|
|
717
|
|
|
718 /* reinit the request chain */
|
|
126
|
719
|
|
58
|
720 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
721 cl->buf->pos = cl->buf->start;
|
|
|
722 cl->buf->file_pos = 0;
|
|
|
723 }
|
|
|
724
|
|
58
|
725 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
726
|
|
122
|
727 if (r->request_body && r->request_body->temp_file
|
|
146
|
728 && r != r->main && u->output.buf)
|
|
122
|
729 {
|
|
|
730 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
731 if (u->output.free == NULL) {
|
|
|
732 return NGX_ERROR;
|
|
58
|
733 }
|
|
122
|
734
|
|
|
735 u->output.free->buf = u->output.buf;
|
|
|
736 u->output.free->next = NULL;
|
|
|
737
|
|
|
738 u->output.buf->pos = u->output.buf->start;
|
|
|
739 u->output.buf->last = u->output.buf->start;
|
|
58
|
740 }
|
|
28
|
741
|
|
|
742 u->output.buf = NULL;
|
|
|
743 u->output.in = NULL;
|
|
|
744 u->output.busy = NULL;
|
|
126
|
745
|
|
130
|
746 /* reinit u->buffer */
|
|
126
|
747
|
|
28
|
748 #if 0
|
|
|
749 if (u->cache) {
|
|
130
|
750 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
751 u->buffer.last = u->buffer.pos;
|
|
28
|
752
|
|
|
753 } else {
|
|
130
|
754 u->buffer.pos = u->buffer.start;
|
|
|
755 u->buffer.last = u->buffer.start;
|
|
28
|
756 }
|
|
|
757 #else
|
|
58
|
758
|
|
130
|
759 u->buffer.pos = u->buffer.start;
|
|
|
760 u->buffer.last = u->buffer.start;
|
|
58
|
761
|
|
28
|
762 #endif
|
|
|
763
|
|
|
764 /* add one more state */
|
|
|
765
|
|
50
|
766 u->state = ngx_array_push(&u->states);
|
|
|
767 if (u->state == NULL) {
|
|
58
|
768 return NGX_ERROR;
|
|
28
|
769 }
|
|
|
770
|
|
|
771 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
772
|
|
|
773 return NGX_OK;
|
|
28
|
774 }
|
|
|
775
|
|
|
776
|
|
36
|
777 static void
|
|
|
778 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
779 {
|
|
32
|
780 int rc;
|
|
|
781 ngx_connection_t *c;
|
|
126
|
782
|
|
28
|
783 c = u->peer.connection;
|
|
|
784
|
|
|
785 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
786 "http upstream send request");
|
|
|
787
|
|
|
788 #if (NGX_HAVE_KQUEUE)
|
|
|
789
|
|
|
790 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
791 && !u->request_sent
|
|
|
792 && c->write->pending_eof)
|
|
|
793 {
|
|
86
|
794 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
795 "kevent() reported that connect() failed");
|
|
28
|
796 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
797 return;
|
|
|
798 }
|
|
|
799
|
|
|
800 #endif
|
|
|
801
|
|
32
|
802 c->log->action = "sending request to upstream";
|
|
28
|
803
|
|
58
|
804 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
805
|
|
|
806 u->request_sent = 1;
|
|
|
807
|
|
|
808 if (rc == NGX_ERROR) {
|
|
|
809 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
810 return;
|
|
|
811 }
|
|
|
812
|
|
|
813 if (c->write->timer_set) {
|
|
|
814 ngx_del_timer(c->write);
|
|
|
815 }
|
|
|
816
|
|
|
817 if (rc == NGX_AGAIN) {
|
|
|
818 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
819
|
|
|
820 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
821 {
|
|
|
822 ngx_http_upstream_finalize_request(r, u,
|
|
|
823 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
824 return;
|
|
|
825 }
|
|
|
826
|
|
|
827 return;
|
|
|
828 }
|
|
|
829
|
|
|
830 /* rc == NGX_OK */
|
|
|
831
|
|
|
832 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
833 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
834 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
835 ngx_tcp_push_n " failed");
|
|
|
836 ngx_http_upstream_finalize_request(r, u,
|
|
|
837 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
838 return;
|
|
28
|
839 }
|
|
|
840
|
|
|
841 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
842 }
|
|
126
|
843
|
|
28
|
844 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
845
|
|
|
846 #if 1
|
|
|
847 if (c->read->ready) {
|
|
126
|
848
|
|
28
|
849 /* post aio operation */
|
|
|
850
|
|
|
851 /*
|
|
|
852 * TODO comment
|
|
|
853 * although we can post aio operation just in the end
|
|
|
854 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
855 * it's better to do here because we postpone header buffer allocation
|
|
|
856 */
|
|
|
857
|
|
|
858 ngx_http_upstream_process_header(c->read);
|
|
|
859 return;
|
|
|
860 }
|
|
|
861 #endif
|
|
|
862
|
|
58
|
863 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
864
|
|
58
|
865 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
866 ngx_http_upstream_finalize_request(r, u,
|
|
|
867 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
868 return;
|
|
|
869 }
|
|
|
870 }
|
|
|
871
|
|
|
872
|
|
36
|
873 static void
|
|
|
874 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
875 {
|
|
|
876 ngx_connection_t *c;
|
|
|
877 ngx_http_request_t *r;
|
|
|
878 ngx_http_upstream_t *u;
|
|
|
879
|
|
|
880 c = wev->data;
|
|
|
881 r = c->data;
|
|
|
882 u = r->upstream;
|
|
|
883
|
|
|
884 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
885 "http upstream send request handler");
|
|
|
886
|
|
|
887 if (wev->timedout) {
|
|
|
888 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
889 return;
|
|
|
890 }
|
|
|
891
|
|
140
|
892 #if (NGX_HTTP_SSL)
|
|
|
893
|
|
|
894 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
895 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
896 return;
|
|
|
897 }
|
|
|
898
|
|
|
899 #endif
|
|
|
900
|
|
200
|
901 if (u->header_sent) {
|
|
|
902 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
903
|
|
|
904 (void) ngx_handle_write_event(wev, 0);
|
|
|
905
|
|
|
906 return;
|
|
|
907 }
|
|
|
908
|
|
28
|
909 ngx_http_upstream_send_request(r, u);
|
|
|
910 }
|
|
|
911
|
|
|
912
|
|
36
|
913 static void
|
|
|
914 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
915 {
|
|
64
|
916 ssize_t n;
|
|
|
917 ngx_int_t rc;
|
|
122
|
918 ngx_str_t *uri, args;
|
|
198
|
919 ngx_uint_t i, flags;
|
|
64
|
920 ngx_list_part_t *part;
|
|
|
921 ngx_table_elt_t *h;
|
|
|
922 ngx_connection_t *c;
|
|
|
923 ngx_http_request_t *r;
|
|
|
924 ngx_http_upstream_t *u;
|
|
|
925 ngx_http_err_page_t *err_page;
|
|
|
926 ngx_http_core_loc_conf_t *clcf;
|
|
|
927 ngx_http_upstream_header_t *hh;
|
|
|
928 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
929
|
|
|
930 c = rev->data;
|
|
|
931 r = c->data;
|
|
|
932 u = r->upstream;
|
|
|
933
|
|
|
934 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
935 "http upstream process header");
|
|
28
|
936
|
|
32
|
937 c->log->action = "reading response header from upstream";
|
|
28
|
938
|
|
|
939 if (rev->timedout) {
|
|
|
940 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
941 return;
|
|
|
942 }
|
|
126
|
943
|
|
130
|
944 if (u->buffer.start == NULL) {
|
|
|
945 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
946 if (u->buffer.start == NULL) {
|
|
28
|
947 ngx_http_upstream_finalize_request(r, u,
|
|
|
948 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
949 return;
|
|
|
950 }
|
|
|
951
|
|
130
|
952 u->buffer.pos = u->buffer.start;
|
|
|
953 u->buffer.last = u->buffer.start;
|
|
|
954 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
955 u->buffer.temporary = 1;
|
|
|
956
|
|
|
957 u->buffer.tag = u->output.tag;
|
|
28
|
958
|
|
58
|
959 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
960 sizeof(ngx_table_elt_t))
|
|
|
961 != NGX_OK)
|
|
58
|
962 {
|
|
|
963 ngx_http_upstream_finalize_request(r, u,
|
|
|
964 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
965 return;
|
|
|
966 }
|
|
|
967
|
|
28
|
968 #if 0
|
|
|
969 if (u->cache) {
|
|
130
|
970 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
971 u->buffer.last = u->buffer.pos;
|
|
28
|
972 }
|
|
|
973 #endif
|
|
|
974 }
|
|
|
975
|
|
130
|
976 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
977 u->buffer.end - u->buffer.last);
|
|
28
|
978
|
|
|
979 if (n == NGX_AGAIN) {
|
|
|
980 #if 0
|
|
|
981 ngx_add_timer(rev, u->read_timeout);
|
|
|
982 #endif
|
|
|
983
|
|
|
984 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
985 ngx_http_upstream_finalize_request(r, u,
|
|
|
986 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
987 return;
|
|
|
988 }
|
|
|
989
|
|
|
990 return;
|
|
|
991 }
|
|
|
992
|
|
|
993 if (n == 0) {
|
|
|
994 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
995 "upstream prematurely closed connection");
|
|
|
996 }
|
|
|
997
|
|
|
998 if (n == NGX_ERROR || n == 0) {
|
|
|
999 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1000 return;
|
|
|
1001 }
|
|
|
1002
|
|
130
|
1003 u->buffer.last += n;
|
|
28
|
1004
|
|
|
1005 #if 0
|
|
|
1006 u->valid_header_in = 0;
|
|
|
1007
|
|
|
1008 u->peer.cached = 0;
|
|
|
1009 #endif
|
|
|
1010
|
|
|
1011 rc = u->process_header(r);
|
|
|
1012
|
|
|
1013 if (rc == NGX_AGAIN) {
|
|
|
1014 #if 0
|
|
|
1015 ngx_add_timer(rev, u->read_timeout);
|
|
|
1016 #endif
|
|
|
1017
|
|
130
|
1018 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1019 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1020 "upstream sent too big header");
|
|
|
1021
|
|
|
1022 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1023 return;
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1027 ngx_http_upstream_finalize_request(r, u,
|
|
|
1028 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1029 return;
|
|
|
1030 }
|
|
|
1031
|
|
|
1032 return;
|
|
|
1033 }
|
|
|
1034
|
|
|
1035 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1036 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1037 return;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1041 ngx_http_upstream_finalize_request(r, u,
|
|
|
1042 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1043 return;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046 /* rc == NGX_OK */
|
|
|
1047
|
|
78
|
1048 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1049
|
|
|
1050 if (u->peer.tries > 1
|
|
|
1051 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1052 {
|
|
|
1053 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1054 return;
|
|
|
1055 }
|
|
|
1056
|
|
|
1057 #if (NGX_HTTP_CACHE)
|
|
|
1058
|
|
|
1059 if (u->peer.tries == 0
|
|
|
1060 && u->stale
|
|
|
1061 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1062 {
|
|
|
1063 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1064 ngx_http_send_cached_response(r));
|
|
58
|
1065 return;
|
|
|
1066 }
|
|
|
1067
|
|
|
1068 #endif
|
|
|
1069 }
|
|
|
1070
|
|
146
|
1071 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1072
|
|
|
1073 if (u->peer.tries > 1
|
|
|
1074 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1075 {
|
|
|
1076 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1077 return;
|
|
|
1078 }
|
|
|
1079
|
|
|
1080 if (u->conf->redirect_404) {
|
|
|
1081 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1082 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1083 return;
|
|
|
1084 }
|
|
58
|
1085 }
|
|
|
1086
|
|
|
1087
|
|
78
|
1088 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
206
|
1089 && u->conf->intercept_errors
|
|
36
|
1090 && r->err_ctx == NULL)
|
|
|
1091 {
|
|
|
1092 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1093
|
|
|
1094 if (clcf->error_pages) {
|
|
|
1095
|
|
|
1096 err_page = clcf->error_pages->elts;
|
|
|
1097 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1098 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1099
|
|
|
1100 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1101
|
|
|
1102 r->headers_out.www_authenticate =
|
|
|
1103 ngx_list_push(&r->headers_out.headers);
|
|
|
1104
|
|
|
1105 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1106 ngx_http_upstream_finalize_request(r, u,
|
|
|
1107 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1108 return;
|
|
|
1109 }
|
|
|
1110
|
|
126
|
1111 *r->headers_out.www_authenticate =
|
|
78
|
1112 *u->headers_in.www_authenticate;
|
|
|
1113 }
|
|
|
1114
|
|
36
|
1115 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1116 u->headers_in.status_n);
|
|
36
|
1117 return;
|
|
|
1118 }
|
|
|
1119 }
|
|
|
1120 }
|
|
|
1121 }
|
|
|
1122
|
|
64
|
1123 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1124 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1125
|
|
|
1126 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1127
|
|
|
1128 part = &r->upstream->headers_in.headers.part;
|
|
|
1129 h = part->elts;
|
|
|
1130
|
|
|
1131 for (i = 0; /* void */; i++) {
|
|
|
1132
|
|
|
1133 if (i >= part->nelts) {
|
|
|
1134 if (part->next == NULL) {
|
|
|
1135 break;
|
|
|
1136 }
|
|
126
|
1137
|
|
64
|
1138 part = part->next;
|
|
|
1139 h = part->elts;
|
|
|
1140 i = 0;
|
|
|
1141 }
|
|
|
1142
|
|
198
|
1143 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1144 h[i].lowcase_key, h[i].key.len);
|
|
|
1145
|
|
|
1146 if (hh && hh->redirect) {
|
|
|
1147 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
64
|
1148 ngx_http_upstream_finalize_request(r, u,
|
|
|
1149 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1150 return;
|
|
|
1151 }
|
|
|
1152 }
|
|
|
1153 }
|
|
|
1154
|
|
122
|
1155 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1156 args.len = 0;
|
|
|
1157 args.data = NULL;
|
|
|
1158 flags = 0;
|
|
|
1159
|
|
|
1160 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1161 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1162 return;
|
|
|
1163 }
|
|
|
1164
|
|
|
1165 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1166 r->zero_in_uri = 1;
|
|
|
1167 }
|
|
|
1168
|
|
202
|
1169 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1170 r->method = NGX_HTTP_GET;
|
|
|
1171 }
|
|
|
1172
|
|
122
|
1173 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1174 return;
|
|
|
1175 }
|
|
|
1176
|
|
28
|
1177 ngx_http_upstream_send_response(r, u);
|
|
|
1178 }
|
|
|
1179
|
|
|
1180
|
|
36
|
1181 static void
|
|
|
1182 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1183 {
|
|
132
|
1184 int tcp_nodelay;
|
|
130
|
1185 ssize_t size;
|
|
58
|
1186 ngx_int_t rc;
|
|
198
|
1187 ngx_uint_t i;
|
|
58
|
1188 ngx_list_part_t *part;
|
|
|
1189 ngx_table_elt_t *h;
|
|
|
1190 ngx_event_pipe_t *p;
|
|
132
|
1191 ngx_connection_t *c;
|
|
112
|
1192 ngx_pool_cleanup_t *cl;
|
|
|
1193 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1194 ngx_http_core_loc_conf_t *clcf;
|
|
|
1195 ngx_http_upstream_header_t *hh;
|
|
|
1196 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1197
|
|
|
1198 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1199
|
|
|
1200 part = &r->upstream->headers_in.headers.part;
|
|
|
1201 h = part->elts;
|
|
|
1202
|
|
|
1203 for (i = 0; /* void */; i++) {
|
|
28
|
1204
|
|
58
|
1205 if (i >= part->nelts) {
|
|
|
1206 if (part->next == NULL) {
|
|
|
1207 break;
|
|
|
1208 }
|
|
126
|
1209
|
|
58
|
1210 part = part->next;
|
|
|
1211 h = part->elts;
|
|
|
1212 i = 0;
|
|
|
1213 }
|
|
|
1214
|
|
198
|
1215 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1216 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1217 {
|
|
198
|
1218 continue;
|
|
|
1219 }
|
|
|
1220
|
|
|
1221 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1222 h[i].lowcase_key, h[i].key.len);
|
|
|
1223
|
|
|
1224 if (hh) {
|
|
|
1225 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1226 ngx_http_upstream_finalize_request(r, u,
|
|
|
1227 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1228 return;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 continue;
|
|
|
1232 }
|
|
|
1233
|
|
|
1234 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1235 ngx_http_upstream_finalize_request(r, u,
|
|
|
1236 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1237 return;
|
|
|
1238 }
|
|
|
1239 }
|
|
|
1240
|
|
198
|
1241 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1242 r->headers_out.server->hash = 0;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1246 r->headers_out.date->hash = 0;
|
|
|
1247 }
|
|
|
1248
|
|
78
|
1249 r->headers_out.status = u->headers_in.status_n;
|
|
|
1250 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1251
|
|
130
|
1252 if (r->headers_out.content_length_n != -1) {
|
|
|
1253 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1254
|
|
|
1255 } else {
|
|
|
1256 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1257 }
|
|
|
1258
|
|
58
|
1259 rc = ngx_http_send_header(r);
|
|
28
|
1260
|
|
178
|
1261 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1262 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1263 return;
|
|
|
1264 }
|
|
|
1265
|
|
|
1266 u->header_sent = 1;
|
|
|
1267
|
|
122
|
1268 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1269 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1270 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1271 clf = cl->data;
|
|
|
1272
|
|
|
1273 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1274 cl->handler(clf);
|
|
|
1275 cl->handler = NULL;
|
|
208
|
1276 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1277 break;
|
|
|
1278 }
|
|
|
1279 }
|
|
|
1280 }
|
|
|
1281 }
|
|
|
1282
|
|
132
|
1283 c = r->connection;
|
|
|
1284
|
|
130
|
1285 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1286
|
|
198
|
1287 if (!u->buffering) {
|
|
130
|
1288
|
|
|
1289 if (u->input_filter == NULL) {
|
|
|
1290 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1291 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1292 u->input_filter_ctx = r;
|
|
|
1293 }
|
|
|
1294
|
|
|
1295 u->peer.connection->read->handler =
|
|
|
1296 ngx_http_upstream_process_non_buffered_body;
|
|
|
1297 r->write_event_handler =
|
|
|
1298 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1299
|
|
|
1300 r->limit_rate = 0;
|
|
|
1301
|
|
|
1302 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1303 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1304 return;
|
|
|
1305 }
|
|
|
1306
|
|
132
|
1307 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1308 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1309
|
|
|
1310 tcp_nodelay = 1;
|
|
|
1311
|
|
|
1312 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1313 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1314 {
|
|
|
1315 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1316 "setsockopt(TCP_NODELAY) failed");
|
|
|
1317 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1318 return;
|
|
|
1319 }
|
|
|
1320
|
|
|
1321 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1322 }
|
|
|
1323
|
|
130
|
1324 size = u->buffer.last - u->buffer.pos;
|
|
|
1325
|
|
|
1326 if (size) {
|
|
|
1327 u->buffer.last = u->buffer.pos;
|
|
|
1328
|
|
|
1329 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1330 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1331 return;
|
|
|
1332 }
|
|
|
1333
|
|
132
|
1334 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1335
|
|
|
1336 } else {
|
|
|
1337 u->buffer.pos = u->buffer.start;
|
|
|
1338 u->buffer.last = u->buffer.start;
|
|
|
1339
|
|
|
1340 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1341 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1342 return;
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345
|
|
|
1346 return;
|
|
|
1347 }
|
|
|
1348
|
|
28
|
1349 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1350
|
|
|
1351 #if 0
|
|
|
1352
|
|
|
1353 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1354 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1355 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1356 ngx_close_file_n " \"%s\" failed",
|
|
|
1357 u->cache->ctx.file.name.data);
|
|
|
1358 }
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 if (u->cachable) {
|
|
130
|
1362 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1363
|
|
|
1364 header->expires = u->cache->ctx.expires;
|
|
|
1365 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1366 header->date = u->cache->ctx.date;
|
|
|
1367 header->length = r->headers_out.content_length_n;
|
|
|
1368 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1369
|
|
|
1370 header->key_len = u->cache->ctx.key0.len;
|
|
|
1371 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1372 header->key[header->key_len] = LF;
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 #endif
|
|
|
1376
|
|
130
|
1377 p = u->pipe;
|
|
28
|
1378
|
|
|
1379 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1380 p->output_ctx = r;
|
|
|
1381 p->tag = u->output.tag;
|
|
126
|
1382 p->bufs = u->conf->bufs;
|
|
28
|
1383 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1384 p->upstream = u->peer.connection;
|
|
132
|
1385 p->downstream = c;
|
|
28
|
1386 p->pool = r->pool;
|
|
132
|
1387 p->log = c->log;
|
|
126
|
1388
|
|
28
|
1389 p->cachable = u->cachable;
|
|
|
1390
|
|
50
|
1391 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1392 if (p->temp_file == NULL) {
|
|
28
|
1393 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1394 return;
|
|
|
1395 }
|
|
|
1396
|
|
|
1397 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1398 p->temp_file->file.log = c->log;
|
|
28
|
1399 p->temp_file->path = u->conf->temp_path;
|
|
|
1400 p->temp_file->pool = r->pool;
|
|
126
|
1401
|
|
28
|
1402 if (u->cachable) {
|
|
|
1403 p->temp_file->persistent = 1;
|
|
|
1404 } else {
|
|
|
1405 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1406 "to a temporary file";
|
|
|
1407 }
|
|
|
1408
|
|
|
1409 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1410 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1411
|
|
50
|
1412 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1413 if (p->preread_bufs == NULL) {
|
|
28
|
1414 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1415 return;
|
|
|
1416 }
|
|
130
|
1417 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1418 p->preread_bufs->next = NULL;
|
|
130
|
1419 u->buffer.recycled = 1;
|
|
|
1420
|
|
|
1421 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1422
|
|
|
1423 if (u->cachable) {
|
|
|
1424 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1425 if (p->buf_to_file == NULL) {
|
|
|
1426 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1427 return;
|
|
|
1428 }
|
|
130
|
1429 p->buf_to_file->pos = u->buffer.start;
|
|
|
1430 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1431 p->buf_to_file->temporary = 1;
|
|
|
1432 }
|
|
|
1433
|
|
|
1434 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1435 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1436 p->single_buf = 1;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1440 p->free_bufs = 1;
|
|
|
1441
|
|
|
1442 /*
|
|
130
|
1443 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1444 * as though these bytes were read
|
|
|
1445 */
|
|
130
|
1446 u->buffer.last = u->buffer.pos;
|
|
28
|
1447
|
|
|
1448 if (u->conf->cyclic_temp_file) {
|
|
|
1449
|
|
|
1450 /*
|
|
|
1451 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1452 * because the writing a new data may interfere with sendfile()
|
|
|
1453 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1454 */
|
|
|
1455
|
|
|
1456 p->cyclic_temp_file = 1;
|
|
132
|
1457 c->sendfile = 0;
|
|
28
|
1458
|
|
|
1459 } else {
|
|
|
1460 p->cyclic_temp_file = 0;
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 p->read_timeout = u->conf->read_timeout;
|
|
|
1464 p->send_timeout = clcf->send_timeout;
|
|
|
1465 p->send_lowat = clcf->send_lowat;
|
|
|
1466
|
|
58
|
1467 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1468 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1469
|
|
|
1470 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1471 }
|
|
|
1472
|
|
|
1473
|
|
36
|
1474 static void
|
|
130
|
1475 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1476 {
|
|
|
1477 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1478 }
|
|
|
1479
|
|
|
1480
|
|
|
1481 static void
|
|
|
1482 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1483 {
|
|
|
1484 size_t size;
|
|
|
1485 ssize_t n;
|
|
|
1486 ngx_buf_t *b;
|
|
132
|
1487 ngx_int_t rc;
|
|
130
|
1488 ngx_uint_t do_write;
|
|
132
|
1489 ngx_connection_t *c, *client;
|
|
130
|
1490 ngx_http_request_t *r;
|
|
|
1491 ngx_http_upstream_t *u;
|
|
|
1492 ngx_http_core_loc_conf_t *clcf;
|
|
|
1493
|
|
|
1494 c = ev->data;
|
|
|
1495
|
|
|
1496 if (ev->write) {
|
|
|
1497 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1498 "http upstream process non buffered downstream");
|
|
|
1499 c->log->action = "sending to client";
|
|
|
1500
|
|
|
1501 } else {
|
|
|
1502 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1503 "http upstream process non buffered upstream");
|
|
|
1504 c->log->action = "reading upstream";
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 if (ev->timedout) {
|
|
|
1508 if (ev->write) {
|
|
|
1509 c->timedout = 1;
|
|
160
|
1510 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1511
|
|
130
|
1512 } else {
|
|
160
|
1513 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1514 }
|
|
|
1515 }
|
|
|
1516
|
|
|
1517 r = c->data;
|
|
|
1518 u = r->upstream;
|
|
132
|
1519 client = r->connection;
|
|
130
|
1520
|
|
|
1521 b = &u->buffer;
|
|
|
1522
|
|
|
1523 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1524
|
|
206
|
1525 do_write = ev->write || u->length == 0;
|
|
130
|
1526
|
|
|
1527 for ( ;; ) {
|
|
|
1528
|
|
|
1529 if (do_write) {
|
|
|
1530
|
|
|
1531 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1532 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1533
|
|
|
1534 if (client->destroyed) {
|
|
|
1535 return;
|
|
|
1536 }
|
|
|
1537
|
|
|
1538 if (rc == NGX_ERROR) {
|
|
130
|
1539 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1540 return;
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1544 &u->out_bufs, u->output.tag);
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 if (u->busy_bufs == NULL) {
|
|
|
1548
|
|
|
1549 if (u->length == 0
|
|
|
1550 || u->peer.connection->read->eof
|
|
|
1551 || u->peer.connection->read->error)
|
|
|
1552 {
|
|
|
1553 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1554 return;
|
|
|
1555 }
|
|
|
1556
|
|
|
1557 b->pos = b->start;
|
|
|
1558 b->last = b->start;
|
|
|
1559 }
|
|
|
1560 }
|
|
|
1561
|
|
|
1562 size = b->end - b->last;
|
|
|
1563
|
|
|
1564 if (size > u->length) {
|
|
|
1565 size = u->length;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 if (size && u->peer.connection->read->ready) {
|
|
206
|
1569
|
|
130
|
1570 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1571
|
|
|
1572 if (n == NGX_AGAIN) {
|
|
|
1573 break;
|
|
|
1574 }
|
|
|
1575
|
|
|
1576 if (n > 0) {
|
|
|
1577 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1578 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1579 return;
|
|
|
1580 }
|
|
|
1581 }
|
|
|
1582
|
|
|
1583 do_write = 1;
|
|
|
1584
|
|
|
1585 continue;
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 break;
|
|
|
1589 }
|
|
|
1590
|
|
132
|
1591 if (client->data == r) {
|
|
|
1592 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1593 == NGX_ERROR)
|
|
|
1594 {
|
|
|
1595 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1596 return;
|
|
|
1597 }
|
|
130
|
1598 }
|
|
|
1599
|
|
132
|
1600 if (client->write->active) {
|
|
|
1601 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1602
|
|
|
1603 } else if (client->write->timer_set) {
|
|
|
1604 ngx_del_timer(client->write);
|
|
130
|
1605 }
|
|
|
1606
|
|
|
1607 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1608 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1609 return;
|
|
|
1610 }
|
|
|
1611
|
|
|
1612 if (u->peer.connection->read->active) {
|
|
|
1613 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1614
|
|
132
|
1615 } else if (u->peer.connection->read->timer_set) {
|
|
|
1616 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1617 }
|
|
|
1618 }
|
|
|
1619
|
|
|
1620
|
|
|
1621 static ngx_int_t
|
|
|
1622 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1623 {
|
|
|
1624 return NGX_OK;
|
|
|
1625 }
|
|
|
1626
|
|
|
1627
|
|
|
1628 static ngx_int_t
|
|
|
1629 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1630 {
|
|
|
1631 ngx_http_request_t *r = data;
|
|
|
1632
|
|
|
1633 ngx_buf_t *b;
|
|
|
1634 ngx_chain_t *cl, **ll;
|
|
|
1635 ngx_http_upstream_t *u;
|
|
|
1636
|
|
|
1637 u = r->upstream;
|
|
|
1638
|
|
|
1639 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1640 ll = &cl->next;
|
|
|
1641 }
|
|
|
1642
|
|
|
1643 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1644 if (cl == NULL) {
|
|
|
1645 return NGX_ERROR;
|
|
|
1646 }
|
|
|
1647
|
|
|
1648 *ll = cl;
|
|
|
1649
|
|
|
1650 cl->buf->flush = 1;
|
|
|
1651 cl->buf->memory = 1;
|
|
|
1652
|
|
|
1653 b = &u->buffer;
|
|
|
1654
|
|
|
1655 cl->buf->pos = b->last;
|
|
|
1656 b->last += bytes;
|
|
|
1657 cl->buf->last = b->last;
|
|
|
1658
|
|
|
1659 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1660 return NGX_OK;
|
|
|
1661 }
|
|
|
1662
|
|
|
1663 u->length -= bytes;
|
|
|
1664
|
|
|
1665 return NGX_OK;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668
|
|
|
1669 static void
|
|
58
|
1670 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1671 {
|
|
|
1672 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1673 }
|
|
|
1674
|
|
|
1675
|
|
|
1676 static void
|
|
36
|
1677 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1678 {
|
|
58
|
1679 ngx_event_pipe_t *p;
|
|
132
|
1680 ngx_connection_t *c, *downstream;
|
|
28
|
1681 ngx_http_request_t *r;
|
|
|
1682 ngx_http_upstream_t *u;
|
|
|
1683
|
|
|
1684 c = ev->data;
|
|
|
1685 r = c->data;
|
|
|
1686 u = r->upstream;
|
|
132
|
1687 downstream = r->connection;
|
|
28
|
1688
|
|
|
1689 if (ev->write) {
|
|
32
|
1690 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1691 "http upstream process downstream");
|
|
|
1692 c->log->action = "sending to client";
|
|
126
|
1693
|
|
28
|
1694 } else {
|
|
32
|
1695 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1696 "http upstream process upstream");
|
|
|
1697 c->log->action = "reading upstream";
|
|
28
|
1698 }
|
|
126
|
1699
|
|
130
|
1700 p = u->pipe;
|
|
28
|
1701
|
|
|
1702 if (ev->timedout) {
|
|
|
1703 if (ev->write) {
|
|
76
|
1704 if (ev->delayed) {
|
|
|
1705
|
|
|
1706 ev->timedout = 0;
|
|
|
1707 ev->delayed = 0;
|
|
|
1708
|
|
|
1709 if (!ev->ready) {
|
|
|
1710 ngx_add_timer(ev, p->send_timeout);
|
|
|
1711
|
|
|
1712 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1713 {
|
|
|
1714 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1715 return;
|
|
|
1716 }
|
|
|
1717
|
|
|
1718 return;
|
|
|
1719 }
|
|
|
1720
|
|
|
1721 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1722
|
|
|
1723 if (downstream->destroyed) {
|
|
|
1724 return;
|
|
|
1725 }
|
|
|
1726
|
|
76
|
1727 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1728 return;
|
|
|
1729 }
|
|
|
1730
|
|
|
1731 } else {
|
|
|
1732 p->downstream_error = 1;
|
|
126
|
1733 c->timedout = 1;
|
|
160
|
1734 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1735 }
|
|
28
|
1736
|
|
|
1737 } else {
|
|
126
|
1738 p->upstream_error = 1;
|
|
160
|
1739 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1740 }
|
|
|
1741
|
|
|
1742 } else {
|
|
76
|
1743 if (ev->write && ev->delayed) {
|
|
|
1744 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1745 "http downstream delayed");
|
|
|
1746
|
|
|
1747 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1748 return;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751 return;
|
|
|
1752 }
|
|
|
1753
|
|
28
|
1754 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1755
|
|
|
1756 if (downstream->destroyed) {
|
|
|
1757 return;
|
|
|
1758 }
|
|
|
1759
|
|
28
|
1760 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1761 return;
|
|
|
1762 }
|
|
|
1763 }
|
|
126
|
1764
|
|
28
|
1765 if (u->peer.connection) {
|
|
|
1766
|
|
|
1767 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1768
|
|
|
1769 if (p->upstream_done && u->cachable) {
|
|
|
1770 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1771 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1772 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1773 return;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776 } else if (p->upstream_eof && u->cachable) {
|
|
|
1777
|
|
|
1778 /* TODO: check length & update cache */
|
|
|
1779
|
|
|
1780 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1781 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1782 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1783 return;
|
|
|
1784 }
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 #endif
|
|
|
1788
|
|
|
1789 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1790 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1791 "http upstream exit: %p", p->out);
|
|
28
|
1792 #if 0
|
|
|
1793 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1794 #endif
|
|
|
1795 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1796 return;
|
|
|
1797 }
|
|
|
1798 }
|
|
|
1799
|
|
|
1800 if (p->downstream_error) {
|
|
32
|
1801 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1802 "http upstream downstream error");
|
|
28
|
1803
|
|
|
1804 if (!u->cachable && u->peer.connection) {
|
|
|
1805 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1806 }
|
|
|
1807 }
|
|
|
1808 }
|
|
|
1809
|
|
|
1810
|
|
36
|
1811 static void
|
|
|
1812 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1813 {
|
|
|
1814 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1815 "http upstream dummy handler");
|
|
|
1816 }
|
|
|
1817
|
|
|
1818
|
|
36
|
1819 static void
|
|
|
1820 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1821 ngx_uint_t ft_type)
|
|
28
|
1822 {
|
|
74
|
1823 ngx_uint_t status, down;
|
|
28
|
1824
|
|
|
1825 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1826 "http next upstream, %xD", ft_type);
|
|
|
1827
|
|
|
1828 #if 0
|
|
|
1829 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1830 #endif
|
|
|
1831
|
|
74
|
1832 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1833 down = 0;
|
|
|
1834 } else {
|
|
|
1835 down = 1;
|
|
28
|
1836 }
|
|
74
|
1837
|
|
|
1838 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1839
|
|
28
|
1840 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1841 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1842 "upstream timed out");
|
|
|
1843 }
|
|
126
|
1844
|
|
28
|
1845 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1846 status = 0;
|
|
|
1847
|
|
|
1848 } else {
|
|
|
1849 switch(ft_type) {
|
|
|
1850
|
|
|
1851 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1852 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1853 break;
|
|
|
1854
|
|
|
1855 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1856 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1857 break;
|
|
|
1858
|
|
|
1859 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1860 status = NGX_HTTP_NOT_FOUND;
|
|
|
1861 break;
|
|
|
1862
|
|
|
1863 /*
|
|
|
1864 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1865 * never reach here
|
|
|
1866 */
|
|
|
1867
|
|
|
1868 default:
|
|
|
1869 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1870 }
|
|
|
1871 }
|
|
|
1872
|
|
132
|
1873 if (r->connection->error) {
|
|
28
|
1874 ngx_http_upstream_finalize_request(r, u,
|
|
|
1875 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1876 return;
|
|
|
1877 }
|
|
|
1878
|
|
|
1879 if (status) {
|
|
|
1880 u->state->status = status;
|
|
|
1881
|
|
74
|
1882 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1883
|
|
|
1884 #if (NGX_HTTP_CACHE)
|
|
|
1885
|
|
|
1886 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1887 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1888 ngx_http_send_cached_response(r));
|
|
28
|
1889 return;
|
|
|
1890 }
|
|
|
1891
|
|
|
1892 #endif
|
|
|
1893
|
|
|
1894 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1895 return;
|
|
|
1896 }
|
|
|
1897 }
|
|
|
1898
|
|
|
1899 if (u->peer.connection) {
|
|
|
1900 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1901 "close http upstream connection: %d",
|
|
|
1902 u->peer.connection->fd);
|
|
126
|
1903 #if (NGX_HTTP_SSL)
|
|
|
1904 if (u->peer.connection->ssl) {
|
|
|
1905 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1906 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1907 }
|
|
|
1908 #endif
|
|
28
|
1909 ngx_close_connection(u->peer.connection);
|
|
|
1910 }
|
|
|
1911
|
|
|
1912 #if 0
|
|
|
1913 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1914 ngx_http_upstream_busy_lock(p);
|
|
|
1915 return;
|
|
|
1916 }
|
|
|
1917 #endif
|
|
|
1918
|
|
|
1919 ngx_http_upstream_connect(r, u);
|
|
|
1920 }
|
|
|
1921
|
|
|
1922
|
|
36
|
1923 static void
|
|
118
|
1924 ngx_http_upstream_cleanup(void *data)
|
|
|
1925 {
|
|
|
1926 ngx_http_request_t *r = data;
|
|
|
1927
|
|
|
1928 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1929 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1930
|
|
|
1931 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1932 }
|
|
|
1933
|
|
|
1934
|
|
|
1935 static void
|
|
36
|
1936 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1937 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1938 {
|
|
112
|
1939 ngx_time_t *tp;
|
|
|
1940
|
|
32
|
1941 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1942 "finalize http upstream request: %i", rc);
|
|
28
|
1943
|
|
118
|
1944 *u->cleanup = NULL;
|
|
|
1945
|
|
112
|
1946 if (u->state->response_time) {
|
|
|
1947 tp = ngx_timeofday();
|
|
|
1948 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1949 - u->state->response_time;
|
|
|
1950 }
|
|
|
1951
|
|
28
|
1952 u->finalize_request(r, rc);
|
|
|
1953
|
|
|
1954 if (u->peer.connection) {
|
|
|
1955 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1956 "close http upstream connection: %d",
|
|
|
1957 u->peer.connection->fd);
|
|
126
|
1958 #if (NGX_HTTP_SSL)
|
|
|
1959
|
|
|
1960 /* TODO: do not shutdown persistent connection */
|
|
|
1961
|
|
|
1962 if (u->peer.connection->ssl) {
|
|
|
1963 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1964 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1965 }
|
|
|
1966 #endif
|
|
28
|
1967 ngx_close_connection(u->peer.connection);
|
|
|
1968 }
|
|
|
1969
|
|
32
|
1970 u->peer.connection = NULL;
|
|
|
1971
|
|
112
|
1972 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1973 {
|
|
|
1974 rc = 0;
|
|
|
1975 }
|
|
|
1976
|
|
130
|
1977 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1978 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1979 "http upstream temp fd: %d",
|
|
130
|
1980 u->pipe->temp_file->file.fd);
|
|
28
|
1981 }
|
|
|
1982
|
|
|
1983 #if 0
|
|
|
1984 if (u->cache) {
|
|
|
1985 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1986 "http upstream cache fd: %d",
|
|
28
|
1987 u->cache->ctx.file.fd);
|
|
|
1988 }
|
|
|
1989 #endif
|
|
|
1990
|
|
58
|
1991 r->log_handler = u->saved_log_handler;
|
|
64
|
1992
|
|
|
1993 if (rc == NGX_DECLINED) {
|
|
|
1994 return;
|
|
|
1995 }
|
|
|
1996
|
|
32
|
1997 r->connection->log->action = "sending to client";
|
|
|
1998
|
|
178
|
1999 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2000 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2001 }
|
|
|
2002
|
|
|
2003 ngx_http_finalize_request(r, rc);
|
|
|
2004 }
|
|
|
2005
|
|
|
2006
|
|
126
|
2007 #if (NGX_HTTP_SSL)
|
|
|
2008
|
|
|
2009 static void
|
|
|
2010 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
2011 {
|
|
|
2012 /* lock peer mutex */
|
|
|
2013
|
|
|
2014 if (peer->ssl_session) {
|
|
|
2015 ngx_ssl_free_session(peer->ssl_session);
|
|
|
2016 }
|
|
|
2017
|
|
|
2018 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
2019
|
|
|
2020 /* unlock peer mutex */
|
|
|
2021
|
|
|
2022 /*
|
|
|
2023 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2024 * and do not wait its "close notify" shutdown alert.
|
|
|
2025 * It is acceptable according to the TLS standard.
|
|
|
2026 */
|
|
|
2027
|
|
|
2028 c->ssl->no_wait_shutdown = 1;
|
|
|
2029
|
|
|
2030 (void) ngx_ssl_shutdown(c);
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 #endif
|
|
|
2034
|
|
|
2035
|
|
58
|
2036 static ngx_int_t
|
|
|
2037 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2038 ngx_uint_t offset)
|
|
126
|
2039 {
|
|
58
|
2040 ngx_table_elt_t **ph;
|
|
126
|
2041
|
|
58
|
2042 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2043
|
|
|
2044 if (*ph == NULL) {
|
|
|
2045 *ph = h;
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 return NGX_OK;
|
|
|
2049 }
|
|
|
2050
|
|
|
2051
|
|
|
2052 static ngx_int_t
|
|
|
2053 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2054 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2055 {
|
|
|
2056 ngx_array_t *pa;
|
|
|
2057 ngx_table_elt_t **ph;
|
|
|
2058
|
|
|
2059 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2060
|
|
|
2061 if (pa->elts == NULL) {
|
|
|
2062 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2063 {
|
|
|
2064 return NGX_ERROR;
|
|
|
2065 }
|
|
|
2066 }
|
|
|
2067
|
|
|
2068 ph = ngx_array_push(pa);
|
|
|
2069 if (ph == NULL) {
|
|
|
2070 return NGX_ERROR;
|
|
|
2071 }
|
|
|
2072
|
|
|
2073 *ph = h;
|
|
|
2074
|
|
|
2075 return NGX_OK;
|
|
|
2076 }
|
|
|
2077
|
|
|
2078
|
|
|
2079 static ngx_int_t
|
|
|
2080 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2081 ngx_uint_t offset)
|
|
|
2082 {
|
|
|
2083 return NGX_OK;
|
|
|
2084 }
|
|
|
2085
|
|
|
2086
|
|
|
2087 static ngx_int_t
|
|
76
|
2088 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2089 ngx_uint_t offset)
|
|
126
|
2090 {
|
|
76
|
2091 ngx_int_t n;
|
|
|
2092
|
|
|
2093 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2094
|
|
|
2095 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2096
|
|
|
2097 if (n != NGX_ERROR) {
|
|
|
2098 r->limit_rate = (size_t) n;
|
|
|
2099 }
|
|
|
2100
|
|
|
2101 return NGX_OK;
|
|
|
2102 }
|
|
|
2103
|
|
|
2104
|
|
|
2105 static ngx_int_t
|
|
198
|
2106 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2107 ngx_uint_t offset)
|
|
|
2108 {
|
|
|
2109 u_char c0, c1, c2;
|
|
|
2110
|
|
|
2111 if (r->upstream->conf->change_buffering) {
|
|
|
2112
|
|
|
2113 if (h->value.len == 2) {
|
|
|
2114 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2115 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2116
|
|
|
2117 if (c0 == 'n' && c1 == 'o') {
|
|
|
2118 r->upstream->buffering = 0;
|
|
|
2119 }
|
|
|
2120
|
|
|
2121 } else if (h->value.len == 3) {
|
|
|
2122 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2123 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2124 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2125
|
|
|
2126 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2127 r->upstream->buffering = 1;
|
|
|
2128 }
|
|
|
2129 }
|
|
|
2130 }
|
|
|
2131
|
|
|
2132 return NGX_OK;
|
|
|
2133 }
|
|
|
2134
|
|
|
2135
|
|
|
2136 static ngx_int_t
|
|
206
|
2137 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2138 ngx_uint_t offset)
|
|
|
2139 {
|
|
|
2140 r->headers_out.override_charset = &h->value;
|
|
|
2141
|
|
|
2142 return NGX_OK;
|
|
|
2143 }
|
|
|
2144
|
|
|
2145
|
|
|
2146 static ngx_int_t
|
|
58
|
2147 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2148 ngx_uint_t offset)
|
|
|
2149 {
|
|
122
|
2150 ngx_table_elt_t *ho, **ph;
|
|
58
|
2151
|
|
|
2152 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2153 if (ho == NULL) {
|
|
|
2154 return NGX_ERROR;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 *ho = *h;
|
|
|
2158
|
|
122
|
2159 if (offset) {
|
|
|
2160 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2161 *ph = ho;
|
|
|
2162 }
|
|
|
2163
|
|
58
|
2164 return NGX_OK;
|
|
|
2165 }
|
|
|
2166
|
|
|
2167
|
|
|
2168 static ngx_int_t
|
|
|
2169 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2170 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2171 {
|
|
|
2172 ngx_array_t *pa;
|
|
|
2173 ngx_table_elt_t *ho, **ph;
|
|
|
2174
|
|
|
2175 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2176
|
|
|
2177 if (pa->elts == NULL) {
|
|
|
2178 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2179 {
|
|
|
2180 return NGX_ERROR;
|
|
|
2181 }
|
|
|
2182 }
|
|
|
2183
|
|
|
2184 ph = ngx_array_push(pa);
|
|
|
2185 if (ph == NULL) {
|
|
|
2186 return NGX_ERROR;
|
|
|
2187 }
|
|
|
2188
|
|
|
2189 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2190 if (ho == NULL) {
|
|
|
2191 return NGX_ERROR;
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 *ho = *h;
|
|
|
2195 *ph = ho;
|
|
|
2196
|
|
|
2197 return NGX_OK;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200
|
|
|
2201 static ngx_int_t
|
|
|
2202 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2203 ngx_uint_t offset)
|
|
|
2204 {
|
|
206
|
2205 u_char *p, *last;
|
|
|
2206
|
|
|
2207 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2208 r->headers_out.content_type = h->value;
|
|
|
2209
|
|
206
|
2210 for (p = h->value.data; *p; p++) {
|
|
|
2211
|
|
|
2212 if (*p != ';') {
|
|
|
2213 continue;
|
|
|
2214 }
|
|
|
2215
|
|
|
2216 last = p;
|
|
|
2217
|
|
|
2218 while (*++p == ' ') { /* void */ }
|
|
|
2219
|
|
|
2220 if (ngx_strncasecmp(p, "charset=", 8) != 0) {
|
|
|
2221 continue;
|
|
|
2222 }
|
|
|
2223
|
|
|
2224 p += 8;
|
|
|
2225
|
|
|
2226 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2227
|
|
|
2228 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2229 r->headers_out.charset.data = p;
|
|
|
2230 }
|
|
|
2231
|
|
58
|
2232 return NGX_OK;
|
|
|
2233 }
|
|
|
2234
|
|
|
2235
|
|
|
2236 static ngx_int_t
|
|
|
2237 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2238 ngx_uint_t offset)
|
|
|
2239 {
|
|
|
2240 ngx_table_elt_t *ho;
|
|
|
2241
|
|
|
2242 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2243 if (ho == NULL) {
|
|
|
2244 return NGX_ERROR;
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 *ho = *h;
|
|
|
2248
|
|
|
2249 r->headers_out.content_length = ho;
|
|
|
2250 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2251
|
|
|
2252 return NGX_OK;
|
|
|
2253 }
|
|
|
2254
|
|
|
2255
|
|
|
2256 static ngx_int_t
|
|
|
2257 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2258 ngx_uint_t offset)
|
|
|
2259 {
|
|
|
2260 ngx_int_t rc;
|
|
|
2261 ngx_table_elt_t *ho;
|
|
|
2262
|
|
|
2263 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2264 if (ho == NULL) {
|
|
|
2265 return NGX_ERROR;
|
|
|
2266 }
|
|
|
2267
|
|
|
2268 *ho = *h;
|
|
|
2269
|
|
|
2270 if (r->upstream->rewrite_redirect) {
|
|
|
2271 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2272
|
|
78
|
2273 if (rc == NGX_DECLINED) {
|
|
|
2274 return NGX_OK;
|
|
|
2275 }
|
|
|
2276
|
|
58
|
2277 if (rc == NGX_OK) {
|
|
|
2278 r->headers_out.location = ho;
|
|
|
2279
|
|
|
2280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2281 "rewritten location: \"%V\"", &ho->value);
|
|
|
2282 }
|
|
|
2283
|
|
|
2284 return rc;
|
|
|
2285 }
|
|
|
2286
|
|
|
2287 /*
|
|
|
2288 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2289 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2290 */
|
|
|
2291
|
|
|
2292 return NGX_OK;
|
|
|
2293 }
|
|
|
2294
|
|
|
2295
|
|
|
2296 static ngx_int_t
|
|
|
2297 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2298 ngx_uint_t offset)
|
|
|
2299 {
|
|
|
2300 u_char *p;
|
|
|
2301 ngx_int_t rc;
|
|
|
2302 ngx_table_elt_t *ho;
|
|
|
2303
|
|
|
2304 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2305 if (ho == NULL) {
|
|
|
2306 return NGX_ERROR;
|
|
|
2307 }
|
|
|
2308
|
|
|
2309 *ho = *h;
|
|
|
2310
|
|
|
2311 if (r->upstream->rewrite_redirect) {
|
|
|
2312
|
|
|
2313 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2314
|
|
|
2315 if (p) {
|
|
|
2316 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2317
|
|
|
2318 } else {
|
|
|
2319 return NGX_OK;
|
|
|
2320 }
|
|
|
2321
|
|
78
|
2322 if (rc == NGX_DECLINED) {
|
|
|
2323 return NGX_OK;
|
|
|
2324 }
|
|
|
2325
|
|
58
|
2326 #if (NGX_DEBUG)
|
|
|
2327 if (rc == NGX_OK) {
|
|
|
2328 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2329 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2330 }
|
|
|
2331 #endif
|
|
|
2332
|
|
|
2333 return rc;
|
|
|
2334 }
|
|
|
2335
|
|
|
2336 return NGX_OK;
|
|
|
2337 }
|
|
|
2338
|
|
|
2339
|
|
|
2340 #if (NGX_HTTP_GZIP)
|
|
|
2341
|
|
|
2342 static ngx_int_t
|
|
|
2343 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2344 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2345 {
|
|
|
2346 ngx_table_elt_t *ho;
|
|
|
2347
|
|
|
2348 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2349 if (ho == NULL) {
|
|
|
2350 return NGX_ERROR;
|
|
|
2351 }
|
|
|
2352
|
|
|
2353 *ho = *h;
|
|
|
2354
|
|
|
2355 r->headers_out.content_encoding = ho;
|
|
|
2356
|
|
|
2357 return NGX_OK;
|
|
|
2358 }
|
|
|
2359
|
|
|
2360 #endif
|
|
|
2361
|
|
|
2362
|
|
36
|
2363 static size_t
|
|
|
2364 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2365 {
|
|
|
2366 if (r->upstream) {
|
|
|
2367 return r->upstream->states.nelts * (3 + 2);
|
|
|
2368 }
|
|
|
2369
|
|
|
2370 return 1;
|
|
|
2371 }
|
|
|
2372
|
|
|
2373
|
|
36
|
2374 static u_char *
|
|
|
2375 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2376 ngx_http_log_op_t *op)
|
|
28
|
2377 {
|
|
|
2378 ngx_uint_t i;
|
|
|
2379 ngx_http_upstream_t *u;
|
|
|
2380 ngx_http_upstream_state_t *state;
|
|
|
2381
|
|
|
2382 u = r->upstream;
|
|
|
2383
|
|
122
|
2384 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2385 *buf = '-';
|
|
|
2386 return buf + 1;
|
|
|
2387 }
|
|
|
2388
|
|
|
2389 i = 0;
|
|
|
2390 state = u->states.elts;
|
|
|
2391
|
|
|
2392 for ( ;; ) {
|
|
|
2393 if (state[i].status == 0) {
|
|
|
2394 *buf++ = '-';
|
|
|
2395
|
|
|
2396 } else {
|
|
|
2397 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2398 }
|
|
|
2399
|
|
|
2400 if (++i == u->states.nelts) {
|
|
|
2401 return buf;
|
|
|
2402 }
|
|
|
2403
|
|
|
2404 *buf++ = ',';
|
|
|
2405 *buf++ = ' ';
|
|
|
2406 }
|
|
|
2407 }
|
|
|
2408
|
|
|
2409
|
|
122
|
2410 static size_t
|
|
|
2411 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2412 uintptr_t data)
|
|
|
2413 {
|
|
|
2414 if (r->upstream) {
|
|
|
2415 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2416 }
|
|
|
2417
|
|
|
2418 return 1;
|
|
|
2419 }
|
|
|
2420
|
|
|
2421
|
|
58
|
2422 static u_char *
|
|
112
|
2423 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2424 ngx_http_log_op_t *op)
|
|
|
2425 {
|
|
|
2426 ngx_uint_t i;
|
|
|
2427 ngx_http_upstream_t *u;
|
|
|
2428 ngx_http_upstream_state_t *state;
|
|
|
2429
|
|
|
2430 u = r->upstream;
|
|
|
2431
|
|
122
|
2432 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2433 *buf = '-';
|
|
|
2434 return buf + 1;
|
|
|
2435 }
|
|
|
2436
|
|
|
2437 i = 0;
|
|
|
2438 state = u->states.elts;
|
|
|
2439
|
|
|
2440 for ( ;; ) {
|
|
|
2441 if (state[i].status == 0) {
|
|
|
2442 *buf++ = '-';
|
|
|
2443
|
|
|
2444 } else {
|
|
|
2445 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2446 state[i].response_time / 1000,
|
|
|
2447 state[i].response_time % 1000);
|
|
|
2448 }
|
|
|
2449
|
|
|
2450 if (++i == u->states.nelts) {
|
|
|
2451 return buf;
|
|
|
2452 }
|
|
|
2453
|
|
|
2454 *buf++ = ',';
|
|
|
2455 *buf++ = ' ';
|
|
|
2456 }
|
|
|
2457 }
|
|
|
2458
|
|
|
2459
|
|
|
2460 static u_char *
|
|
58
|
2461 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2462 {
|
|
|
2463 u_char *p;
|
|
|
2464 ngx_http_upstream_t *u;
|
|
|
2465 ngx_peer_connection_t *peer;
|
|
|
2466
|
|
|
2467 u = r->upstream;
|
|
|
2468 peer = &u->peer;
|
|
|
2469
|
|
|
2470 p = ngx_snprintf(buf, len,
|
|
58
|
2471 ", server: %V, URL: \"%V\","
|
|
118
|
2472 " upstream: \"%V%V%s%V\"",
|
|
52
|
2473 &r->server_name,
|
|
28
|
2474 &r->unparsed_uri,
|
|
58
|
2475 &u->conf->schema,
|
|
28
|
2476 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2477 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2478 &u->uri);
|
|
28
|
2479 len -= p - buf;
|
|
|
2480 buf = p;
|
|
|
2481
|
|
54
|
2482 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2483 }
|
|
|
2484
|
|
|
2485
|
|
36
|
2486 static ngx_int_t
|
|
122
|
2487 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2488 {
|
|
122
|
2489 ngx_http_variable_t *var, *v;
|
|
28
|
2490 ngx_http_log_op_name_t *op;
|
|
|
2491
|
|
122
|
2492 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2493 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2494 if (var == NULL) {
|
|
|
2495 return NGX_ERROR;
|
|
|
2496 }
|
|
|
2497
|
|
186
|
2498 var->get_handler = v->get_handler;
|
|
122
|
2499 var->data = v->data;
|
|
|
2500 }
|
|
|
2501
|
|
28
|
2502 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2503 op->run = NULL;
|
|
|
2504
|
|
|
2505 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2506 if (op->name.len == 0) {
|
|
|
2507 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2508 }
|
|
|
2509 }
|
|
|
2510
|
|
|
2511 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2512
|
|
|
2513 return NGX_OK;
|
|
|
2514 }
|
|
58
|
2515
|
|
|
2516
|
|
122
|
2517 static ngx_int_t
|
|
|
2518 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2519 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2520 {
|
|
|
2521 u_char *p;
|
|
|
2522 size_t len;
|
|
|
2523 ngx_uint_t i;
|
|
|
2524 ngx_http_upstream_t *u;
|
|
|
2525 ngx_http_upstream_state_t *state;
|
|
|
2526
|
|
|
2527 v->valid = 1;
|
|
|
2528 v->no_cachable = 0;
|
|
|
2529 v->not_found = 0;
|
|
|
2530
|
|
|
2531 u = r->upstream;
|
|
|
2532
|
|
|
2533 if (u == NULL || u->states.nelts == 0) {
|
|
|
2534 v->not_found = 1;
|
|
|
2535 return NGX_OK;
|
|
|
2536 }
|
|
|
2537
|
|
|
2538 len = u->states.nelts * (3 + 2);
|
|
|
2539
|
|
|
2540 p = ngx_palloc(r->pool, len);
|
|
|
2541 if (p == NULL) {
|
|
|
2542 return NGX_ERROR;
|
|
|
2543 }
|
|
|
2544
|
|
|
2545 v->data = p;
|
|
|
2546
|
|
|
2547 i = 0;
|
|
|
2548 state = u->states.elts;
|
|
|
2549
|
|
|
2550 for ( ;; ) {
|
|
|
2551 if (state[i].status == 0) {
|
|
|
2552 *p++ = '-';
|
|
|
2553
|
|
|
2554 } else {
|
|
|
2555 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2556 }
|
|
|
2557
|
|
|
2558 if (++i == u->states.nelts) {
|
|
|
2559 break;
|
|
|
2560 }
|
|
|
2561
|
|
|
2562 *p++ = ',';
|
|
|
2563 *p++ = ' ';
|
|
|
2564 }
|
|
|
2565
|
|
|
2566 v->len = p - v->data;
|
|
|
2567
|
|
|
2568 return NGX_OK;
|
|
|
2569 }
|
|
|
2570
|
|
|
2571
|
|
|
2572 static ngx_int_t
|
|
|
2573 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2574 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2575 {
|
|
|
2576 u_char *p;
|
|
|
2577 size_t len;
|
|
|
2578 ngx_uint_t i;
|
|
|
2579 ngx_http_upstream_t *u;
|
|
|
2580 ngx_http_upstream_state_t *state;
|
|
|
2581
|
|
|
2582 v->valid = 1;
|
|
|
2583 v->no_cachable = 0;
|
|
|
2584 v->not_found = 0;
|
|
|
2585
|
|
|
2586 u = r->upstream;
|
|
|
2587
|
|
|
2588 if (u == NULL || u->states.nelts == 0) {
|
|
|
2589 v->not_found = 1;
|
|
|
2590 return NGX_OK;
|
|
|
2591 }
|
|
|
2592
|
|
|
2593 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2594
|
|
|
2595 p = ngx_palloc(r->pool, len);
|
|
|
2596 if (p == NULL) {
|
|
|
2597 return NGX_ERROR;
|
|
|
2598 }
|
|
|
2599
|
|
|
2600 v->data = p;
|
|
|
2601
|
|
|
2602 i = 0;
|
|
|
2603 state = u->states.elts;
|
|
|
2604
|
|
|
2605 for ( ;; ) {
|
|
|
2606 if (state[i].status == 0) {
|
|
|
2607 *p++ = '-';
|
|
|
2608
|
|
|
2609 } else {
|
|
|
2610 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2611 state[i].response_time / 1000,
|
|
|
2612 state[i].response_time % 1000);
|
|
|
2613 }
|
|
|
2614
|
|
|
2615 if (++i == u->states.nelts) {
|
|
|
2616 break;
|
|
|
2617 }
|
|
|
2618
|
|
|
2619 *p++ = ',';
|
|
|
2620 *p++ = ' ';
|
|
|
2621 }
|
|
|
2622
|
|
|
2623 v->len = p - v->data;
|
|
|
2624
|
|
|
2625 return NGX_OK;
|
|
|
2626 }
|
|
|
2627
|
|
|
2628
|
|
200
|
2629 static char *
|
|
|
2630 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2631 {
|
|
|
2632 char *rv;
|
|
|
2633 void *mconf;
|
|
|
2634 ngx_str_t *value;
|
|
|
2635 ngx_url_t u;
|
|
|
2636 ngx_uint_t i, j, m, n;
|
|
|
2637 ngx_conf_t pcf;
|
|
|
2638 ngx_peers_t **peers;
|
|
|
2639 ngx_http_module_t *module;
|
|
|
2640 ngx_http_conf_ctx_t *ctx;
|
|
|
2641 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2642
|
|
|
2643 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2644 if (ctx == NULL) {
|
|
|
2645 return NGX_CONF_ERROR;
|
|
|
2646 }
|
|
|
2647
|
|
|
2648 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2649
|
|
|
2650 value = cf->args->elts;
|
|
|
2651 u.host = value[1];
|
|
|
2652
|
|
|
2653 uscf = ngx_http_upstream_add(cf, &u);
|
|
|
2654 if (uscf == NULL) {
|
|
|
2655 return NGX_CONF_ERROR;
|
|
|
2656 }
|
|
|
2657
|
|
|
2658 /* the upstream{}'s srv_conf */
|
|
|
2659
|
|
|
2660 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2661 if (ctx->srv_conf == NULL) {
|
|
|
2662 return NGX_CONF_ERROR;
|
|
|
2663 }
|
|
|
2664
|
|
|
2665 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2666
|
|
|
2667
|
|
|
2668 /* the upstream{}'s loc_conf */
|
|
|
2669
|
|
|
2670 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2671 if (ctx->loc_conf == NULL) {
|
|
|
2672 return NGX_CONF_ERROR;
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2676 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2677 continue;
|
|
|
2678 }
|
|
|
2679
|
|
|
2680 module = ngx_modules[m]->ctx;
|
|
|
2681
|
|
|
2682 if (module->create_loc_conf) {
|
|
|
2683 mconf = module->create_loc_conf(cf);
|
|
|
2684 if (mconf == NULL) {
|
|
|
2685 return NGX_CONF_ERROR;
|
|
|
2686 }
|
|
|
2687
|
|
|
2688 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2689 }
|
|
|
2690 }
|
|
|
2691
|
|
|
2692
|
|
|
2693 /* parse inside upstream{} */
|
|
|
2694
|
|
|
2695 pcf = *cf;
|
|
|
2696 cf->ctx = ctx;
|
|
|
2697 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2698
|
|
|
2699 rv = ngx_conf_parse(cf, NULL);
|
|
|
2700
|
|
|
2701 *cf = pcf;
|
|
|
2702
|
|
|
2703 if (rv != NGX_CONF_OK) {
|
|
|
2704 return rv;
|
|
|
2705 }
|
|
|
2706
|
|
|
2707 if (uscf->servers == NULL) {
|
|
|
2708 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2709 "no servers are inside upstream");
|
|
|
2710 return NGX_CONF_ERROR;
|
|
|
2711 }
|
|
|
2712
|
|
|
2713 peers = uscf->servers->elts;
|
|
|
2714
|
|
|
2715 if (uscf->servers->nelts == 1) {
|
|
|
2716 uscf->peers = peers[0];
|
|
|
2717 }
|
|
|
2718
|
|
|
2719 n = 0;
|
|
|
2720
|
|
|
2721 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2722 n += peers[i]->number;
|
|
|
2723 }
|
|
|
2724
|
|
|
2725 uscf->peers = ngx_pcalloc(cf->pool,
|
|
|
2726 sizeof(ngx_peers_t) + sizeof(ngx_peer_t) * (n - 1));
|
|
|
2727 if (uscf->peers == NULL) {
|
|
|
2728 return NGX_CONF_ERROR;
|
|
|
2729 }
|
|
|
2730
|
|
|
2731 uscf->peers->number = n;
|
|
|
2732 uscf->peers->weight = 1;
|
|
|
2733
|
|
|
2734 n = 0;
|
|
|
2735
|
|
|
2736 for (i = 0; i < uscf->servers->nelts; i++) {
|
|
|
2737 for (j = 0; j < peers[i]->number; j++) {
|
|
|
2738 uscf->peers->peer[n++] = peers[i]->peer[j];
|
|
|
2739 }
|
|
|
2740 }
|
|
|
2741
|
|
|
2742 return rv;
|
|
|
2743 }
|
|
|
2744
|
|
|
2745
|
|
|
2746 static char *
|
|
|
2747 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2748 {
|
|
|
2749 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2750
|
|
|
2751 ngx_str_t *value;
|
|
|
2752 ngx_url_t u;
|
|
|
2753 ngx_peers_t **peers;
|
|
|
2754
|
|
|
2755 if (uscf->servers == NULL) {
|
|
|
2756 uscf->servers = ngx_array_create(cf->pool, 4, sizeof(ngx_peers_t *));
|
|
|
2757 if (uscf->servers == NULL) {
|
|
|
2758 return NGX_CONF_ERROR;
|
|
|
2759 }
|
|
|
2760 }
|
|
|
2761
|
|
|
2762 peers = ngx_array_push(uscf->servers);
|
|
|
2763 if (peers == NULL) {
|
|
|
2764 return NGX_CONF_ERROR;
|
|
|
2765 }
|
|
|
2766
|
|
|
2767 value = cf->args->elts;
|
|
|
2768
|
|
|
2769 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2770
|
|
|
2771 u.url = value[1];
|
|
|
2772 u.default_portn = 80;
|
|
|
2773
|
|
|
2774 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2775 if (u.err) {
|
|
|
2776 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2777 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2778 }
|
|
|
2779
|
|
|
2780 return NGX_CONF_ERROR;
|
|
|
2781 }
|
|
|
2782
|
|
|
2783 *peers = u.peers;
|
|
|
2784
|
|
|
2785 return NGX_CONF_OK;
|
|
|
2786 }
|
|
|
2787
|
|
|
2788
|
|
|
2789 ngx_http_upstream_srv_conf_t *
|
|
|
2790 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u)
|
|
|
2791 {
|
|
|
2792 ngx_uint_t i;
|
|
|
2793 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2794 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2795
|
|
|
2796 if (u->upstream) {
|
|
|
2797 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2798 if (u->err) {
|
|
|
2799 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2800 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 return NULL;
|
|
|
2804 }
|
|
|
2805
|
|
|
2806 if (u->peers) {
|
|
|
2807 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2808 if (uscf == NULL) {
|
|
|
2809 return NULL;
|
|
|
2810 }
|
|
|
2811
|
|
|
2812 uscf->peers = u->peers;
|
|
|
2813
|
|
|
2814 return uscf;
|
|
|
2815 }
|
|
|
2816 }
|
|
|
2817
|
|
|
2818 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2819
|
|
|
2820 uscfp = umcf->upstreams.elts;
|
|
|
2821
|
|
|
2822 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2823 if (uscfp[i]->host.len != u->host.len) {
|
|
|
2824 continue;
|
|
|
2825 }
|
|
|
2826
|
|
|
2827 if (ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2828 == 0)
|
|
|
2829 {
|
|
|
2830 return uscfp[i];
|
|
|
2831 }
|
|
|
2832 }
|
|
|
2833
|
|
|
2834 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2835 if (uscf == NULL) {
|
|
|
2836 return NULL;
|
|
|
2837 }
|
|
|
2838
|
|
|
2839 uscf->host = u->host;
|
|
|
2840 uscf->file_name = cf->conf_file->file.name;
|
|
|
2841 uscf->line = cf->conf_file->line;
|
|
|
2842 uscf->port = u->default_portn;
|
|
|
2843
|
|
|
2844 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2845 if (uscfp == NULL) {
|
|
|
2846 return NULL;
|
|
|
2847 }
|
|
|
2848
|
|
|
2849 *uscfp = uscf;
|
|
|
2850
|
|
|
2851 return uscf;
|
|
|
2852 }
|
|
|
2853
|
|
|
2854
|
|
58
|
2855 static void *
|
|
|
2856 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2857 {
|
|
|
2858 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2859
|
|
|
2860 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2861 if (umcf == NULL) {
|
|
|
2862 return NULL;
|
|
|
2863 }
|
|
|
2864
|
|
200
|
2865 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2866 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2867 != NGX_OK)
|
|
|
2868 {
|
|
|
2869 return NGX_CONF_ERROR;
|
|
|
2870 }
|
|
|
2871
|
|
58
|
2872 return umcf;
|
|
|
2873 }
|
|
|
2874
|
|
|
2875
|
|
|
2876 static char *
|
|
200
|
2877 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
2878 {
|
|
|
2879 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2880
|
|
200
|
2881 ngx_uint_t i;
|
|
|
2882 ngx_array_t headers_in;
|
|
|
2883 ngx_hash_key_t *hk;
|
|
|
2884 ngx_hash_init_t hash;
|
|
|
2885 ngx_http_upstream_header_t *header;
|
|
|
2886 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
2887
|
|
|
2888 uscfp = umcf->upstreams.elts;
|
|
|
2889
|
|
|
2890 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
2891 if (uscfp[i]->peers) {
|
|
|
2892 continue;
|
|
|
2893 }
|
|
|
2894
|
|
|
2895 uscfp[i]->peers = ngx_inet_resolve_peer(cf, &uscfp[i]->host,
|
|
|
2896 uscfp[i]->port);
|
|
|
2897
|
|
|
2898 if (uscfp[i]->peers == NULL) {
|
|
|
2899 return NGX_CONF_ERROR;
|
|
|
2900 }
|
|
|
2901
|
|
|
2902 if (uscfp[i]->peers == NGX_CONF_ERROR) {
|
|
|
2903 ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
|
2904 "upstream host \"%V\" is not found in %s:%ui",
|
|
|
2905 &uscfp[i]->host, uscfp[i]->file_name.data,
|
|
|
2906 uscfp[i]->line);
|
|
|
2907 return NGX_CONF_ERROR;
|
|
|
2908 }
|
|
|
2909 }
|
|
198
|
2910
|
|
|
2911 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2912 != NGX_OK)
|
|
58
|
2913 {
|
|
|
2914 return NGX_CONF_ERROR;
|
|
|
2915 }
|
|
|
2916
|
|
198
|
2917 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2918 hk = ngx_array_push(&headers_in);
|
|
|
2919 if (hk == NULL) {
|
|
|
2920 return NGX_CONF_ERROR;
|
|
|
2921 }
|
|
|
2922
|
|
|
2923 hk->key = header->name;
|
|
|
2924 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2925 hk->value = header;
|
|
|
2926 }
|
|
|
2927
|
|
|
2928 hash.hash = &umcf->headers_in_hash;
|
|
|
2929 hash.key = ngx_hash_key_lc;
|
|
|
2930 hash.max_size = 512;
|
|
|
2931 hash.bucket_size = ngx_cacheline_size;
|
|
|
2932 hash.name = "upstream_headers_in_hash";
|
|
|
2933 hash.pool = cf->pool;
|
|
|
2934 hash.temp_pool = NULL;
|
|
|
2935
|
|
|
2936 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
2937 return NGX_CONF_ERROR;
|
|
|
2938 }
|
|
58
|
2939
|
|
|
2940 return NGX_CONF_OK;
|
|
|
2941 }
|
