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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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294
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24 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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25 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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26 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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27 ngx_http_upstream_t *u);
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130
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28 static void
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29 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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30 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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31 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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32 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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33 ssize_t bytes);
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58
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34 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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35 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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36 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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37 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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38 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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39 static void ngx_http_upstream_cleanup(void *data);
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28
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40 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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41 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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42
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58
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43 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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44 ngx_table_elt_t *h, ngx_uint_t offset);
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45 static ngx_int_t
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46 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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48 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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50 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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52 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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54 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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55 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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56 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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57 ngx_table_elt_t *h, ngx_uint_t offset);
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58 static ngx_int_t
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59 ngx_http_upstream_copy_multi_header_lines(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_type(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_copy_content_length(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_location(ngx_http_request_t *r,
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66 ngx_table_elt_t *h, ngx_uint_t offset);
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67 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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68 ngx_table_elt_t *h, ngx_uint_t offset);
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69 #if (NGX_HTTP_GZIP)
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70 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 #endif
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73
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122
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74 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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75 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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76 ngx_http_variable_value_t *v, uintptr_t data);
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77 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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78 ngx_http_variable_value_t *v, uintptr_t data);
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79
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200
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80 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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81 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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82 void *conf);
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83
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58
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84 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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85 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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86
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126
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87 #if (NGX_HTTP_SSL)
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140
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88 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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89 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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90 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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91 #endif
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92
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58
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93
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94 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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95
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96 { ngx_string("Status"),
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97 ngx_http_upstream_process_header_line,
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98 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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99 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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100
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101 { ngx_string("Content-Type"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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104 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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105
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106 { ngx_string("Content-Length"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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109 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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110
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111 { ngx_string("Date"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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114 ngx_http_upstream_copy_header_line,
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115 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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116
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117 { ngx_string("Server"),
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118 ngx_http_upstream_process_header_line,
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119 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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120 ngx_http_upstream_copy_header_line,
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121 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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122
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78
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123 { ngx_string("WWW-Authenticate"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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126 ngx_http_upstream_copy_header_line, 0, 0 },
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127
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58
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128 { ngx_string("Location"),
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129 ngx_http_upstream_ignore_header_line, 0,
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64
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130 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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131
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132 { ngx_string("Refresh"),
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133 ngx_http_upstream_ignore_header_line, 0,
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64
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134 ngx_http_upstream_rewrite_refresh, 0, 0 },
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135
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136 { ngx_string("Set-Cookie"),
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137 ngx_http_upstream_ignore_header_line, 0,
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80
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138 ngx_http_upstream_copy_header_line, 0, 1 },
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139
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140 { ngx_string("Content-Disposition"),
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141 ngx_http_upstream_ignore_header_line, 0,
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142 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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143
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144 { ngx_string("Cache-Control"),
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145 ngx_http_upstream_process_multi_header_lines,
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146 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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147 ngx_http_upstream_copy_multi_header_lines,
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64
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148 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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149
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122
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150 { ngx_string("Expires"),
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151 ngx_http_upstream_process_header_line,
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152 offsetof(ngx_http_upstream_headers_in_t, expires),
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153 ngx_http_upstream_copy_header_line,
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154 offsetof(ngx_http_headers_out_t, expires), 1 },
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155
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126
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156 { ngx_string("Accept-Ranges"),
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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159 ngx_http_upstream_copy_header_line,
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160 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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161
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58
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162 { ngx_string("Connection"),
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163 ngx_http_upstream_ignore_header_line, 0,
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64
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164 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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165
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190
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166 { ngx_string("Keep-Alive"),
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167 ngx_http_upstream_ignore_header_line, 0,
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168 ngx_http_upstream_ignore_header_line, 0, 0 },
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169
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58
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170 { ngx_string("X-Powered-By"),
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171 ngx_http_upstream_ignore_header_line, 0,
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198
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172 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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173
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174 { ngx_string("X-Accel-Expires"),
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175 ngx_http_upstream_process_header_line,
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176 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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177 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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178
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179 { ngx_string("X-Accel-Redirect"),
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180 ngx_http_upstream_process_header_line,
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181 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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182 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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183
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76
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184 { ngx_string("X-Accel-Limit-Rate"),
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185 ngx_http_upstream_process_limit_rate, 0,
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186 ngx_http_upstream_ignore_header_line, 0, 0 },
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187
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198
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188 { ngx_string("X-Accel-Buffering"),
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189 ngx_http_upstream_process_buffering, 0,
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190 ngx_http_upstream_ignore_header_line, 0, 0 },
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191
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206
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192 { ngx_string("X-Accel-Charset"),
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193 ngx_http_upstream_process_charset, 0,
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194 ngx_http_upstream_ignore_header_line, 0, 0 },
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195
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58
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196 #if (NGX_HTTP_GZIP)
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197 { ngx_string("Content-Encoding"),
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198 ngx_http_upstream_process_header_line,
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199 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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200 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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201 #endif
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202
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64
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203 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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204 };
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28
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205
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206
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200
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207 static ngx_command_t ngx_http_upstream_commands[] = {
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208
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209 { ngx_string("upstream"),
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210 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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211 ngx_http_upstream,
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212 0,
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213 0,
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214 NULL },
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215
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216 { ngx_string("server"),
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260
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217 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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218 ngx_http_upstream_server,
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219 NGX_HTTP_SRV_CONF_OFFSET,
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220 0,
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221 NULL },
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222
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223 ngx_null_command
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224 };
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225
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226
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227 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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228 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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229 NULL, /* postconfiguration */
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230
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231 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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232 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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233
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234 NULL, /* create server configuration */
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235 NULL, /* merge server configuration */
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236
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237 NULL, /* create location configuration */
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238 NULL /* merge location configuration */
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239 };
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126
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240
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28
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241
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242 ngx_module_t ngx_http_upstream_module = {
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58
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243 NGX_MODULE_V1,
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28
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244 &ngx_http_upstream_module_ctx, /* module context */
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200
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245 ngx_http_upstream_commands, /* module directives */
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28
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246 NGX_HTTP_MODULE, /* module type */
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90
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247 NULL, /* init master */
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28
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248 NULL, /* init module */
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90
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249 NULL, /* init process */
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250 NULL, /* init thread */
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251 NULL, /* exit thread */
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252 NULL, /* exit process */
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253 NULL, /* exit master */
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254 NGX_MODULE_V1_PADDING
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28
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255 };
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256
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257
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122
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258 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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259
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186
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260 { ngx_string("upstream_status"), NULL,
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132
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261 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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262
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186
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263 { ngx_string("upstream_response_time"), NULL,
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132
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264 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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265
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186
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266 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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267 };
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268
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269
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36
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270 void
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271 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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272 {
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58
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273 ngx_connection_t *c;
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118
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274 ngx_http_cleanup_t *cln;
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58
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275 ngx_http_upstream_t *u;
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276 ngx_http_core_loc_conf_t *clcf;
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28
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277
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278 c = r->connection;
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279
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280 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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281 "http init upstream, client timer: %d", c->read->timer_set);
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282
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283 if (c->read->timer_set) {
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284 ngx_del_timer(c->read);
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285 }
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286
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178
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287 u = r->upstream;
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288
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289 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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290 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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291 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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292 }
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126
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293
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28
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294 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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295
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296 if (!c->write->active) {
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80
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297 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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298 == NGX_ERROR)
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28
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299 {
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300 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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301 return;
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302 }
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303 }
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304 }
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305
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86
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306 if (r->request_body) {
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307 u->request_bufs = r->request_body->bufs;
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308 }
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58
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309
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260
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310 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) {
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311 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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312 return;
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313 }
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314
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86
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315 if (u->create_request(r) != NGX_OK) {
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28
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316 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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317 return;
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318 }
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319
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58
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320 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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|
28
|
321
|
|
|
322 u->output.sendfile = r->connection->sendfile;
|
|
|
323 u->output.pool = r->pool;
|
|
|
324 u->output.bufs.num = 1;
|
|
58
|
325 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
326 u->output.output_filter = ngx_chain_writer;
|
|
|
327 u->output.filter_ctx = &u->writer;
|
|
|
328
|
|
|
329 u->writer.pool = r->pool;
|
|
|
330
|
|
296
|
331 if (r->upstream_states == NULL) {
|
|
|
332
|
|
|
333 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
334 sizeof(ngx_http_upstream_state_t));
|
|
|
335 if (r->upstream_states == NULL) {
|
|
|
336 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
337 return;
|
|
|
338 }
|
|
|
339
|
|
|
340 } else {
|
|
|
341
|
|
|
342 u->state = ngx_array_push(r->upstream_states);
|
|
|
343 if (u->state == NULL) {
|
|
|
344 ngx_http_upstream_finalize_request(r, u,
|
|
|
345 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
346 return;
|
|
|
347 }
|
|
|
348
|
|
|
349 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
350 }
|
|
|
351
|
|
142
|
352 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
353 if (cln == NULL) {
|
|
|
354 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
355 return;
|
|
|
356 }
|
|
|
357
|
|
|
358 cln->handler = ngx_http_upstream_cleanup;
|
|
|
359 cln->data = r;
|
|
|
360 u->cleanup = &cln->handler;
|
|
|
361
|
|
28
|
362 ngx_http_upstream_connect(r, u);
|
|
|
363 }
|
|
|
364
|
|
|
365
|
|
36
|
366 static void
|
|
58
|
367 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
368 {
|
|
|
369 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
370 }
|
|
|
371
|
|
|
372
|
|
|
373 static void
|
|
|
374 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
375 {
|
|
|
376 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
377 }
|
|
|
378
|
|
|
379
|
|
|
380 static void
|
|
|
381 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
382 ngx_event_t *ev)
|
|
28
|
383 {
|
|
|
384 int n;
|
|
|
385 char buf[1];
|
|
126
|
386 ngx_err_t err;
|
|
28
|
387 ngx_connection_t *c;
|
|
|
388 ngx_http_upstream_t *u;
|
|
|
389
|
|
76
|
390 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
391 "http upstream check client, write event:%d, \"%V\"",
|
|
|
392 ev->write, &r->uri);
|
|
28
|
393
|
|
58
|
394 c = r->connection;
|
|
32
|
395 u = r->upstream;
|
|
|
396
|
|
132
|
397 if (c->error) {
|
|
76
|
398 ngx_http_upstream_finalize_request(r, u,
|
|
|
399 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
400 return;
|
|
|
401 }
|
|
|
402
|
|
32
|
403 if (u->peer.connection == NULL) {
|
|
|
404 return;
|
|
|
405 }
|
|
|
406
|
|
28
|
407 #if (NGX_HAVE_KQUEUE)
|
|
|
408
|
|
|
409 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
410
|
|
|
411 if (!ev->pending_eof) {
|
|
|
412 return;
|
|
|
413 }
|
|
|
414
|
|
|
415 ev->eof = 1;
|
|
132
|
416 c->error = 1;
|
|
28
|
417
|
|
|
418 if (ev->kq_errno) {
|
|
|
419 ev->error = 1;
|
|
|
420 }
|
|
|
421
|
|
|
422 if (!u->cachable && u->peer.connection) {
|
|
|
423 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
424 "kevent() reported that client closed prematurely "
|
|
|
425 "connection, so upstream connection is closed too");
|
|
28
|
426 ngx_http_upstream_finalize_request(r, u,
|
|
|
427 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
428 return;
|
|
|
429 }
|
|
|
430
|
|
|
431 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
432 "kevent() reported that client closed "
|
|
|
433 "prematurely connection");
|
|
|
434
|
|
|
435 if (u->peer.connection == NULL) {
|
|
|
436 ngx_http_upstream_finalize_request(r, u,
|
|
|
437 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
438 return;
|
|
|
439 }
|
|
|
440
|
|
|
441 return;
|
|
|
442 }
|
|
|
443
|
|
|
444 #endif
|
|
|
445
|
|
|
446 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
447
|
|
|
448 err = ngx_socket_errno;
|
|
|
449
|
|
286
|
450 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
451 "http upstream recv(): %d", n);
|
|
|
452
|
|
28
|
453 /*
|
|
|
454 * we do not need to disable the write event because
|
|
|
455 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
456 */
|
|
|
457
|
|
|
458 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
459 return;
|
|
|
460 }
|
|
|
461
|
|
|
462 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
463 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
464 ngx_http_upstream_finalize_request(r, u,
|
|
|
465 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
466 return;
|
|
|
467 }
|
|
|
468 }
|
|
|
469
|
|
|
470 if (n > 0) {
|
|
|
471 return;
|
|
|
472 }
|
|
|
473
|
|
|
474 if (n == -1) {
|
|
|
475 if (err == NGX_EAGAIN) {
|
|
|
476 return;
|
|
|
477 }
|
|
|
478
|
|
|
479 ev->error = 1;
|
|
|
480
|
|
32
|
481 } else { /* n == 0 */
|
|
28
|
482 err = 0;
|
|
|
483 }
|
|
|
484
|
|
78
|
485 ev->eof = 1;
|
|
132
|
486 c->error = 1;
|
|
78
|
487
|
|
28
|
488 if (!u->cachable && u->peer.connection) {
|
|
|
489 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
490 "client closed prematurely connection, "
|
|
|
491 "so upstream connection is closed too");
|
|
|
492 ngx_http_upstream_finalize_request(r, u,
|
|
|
493 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
494 return;
|
|
|
495 }
|
|
|
496
|
|
|
497 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
498 "client closed prematurely connection");
|
|
|
499
|
|
|
500 if (u->peer.connection == NULL) {
|
|
|
501 ngx_http_upstream_finalize_request(r, u,
|
|
|
502 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
503 return;
|
|
|
504 }
|
|
|
505 }
|
|
|
506
|
|
|
507
|
|
36
|
508 static void
|
|
|
509 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
510 {
|
|
140
|
511 ngx_int_t rc;
|
|
214
|
512 ngx_time_t *tp;
|
|
140
|
513 ngx_connection_t *c;
|
|
28
|
514
|
|
32
|
515 r->connection->log->action = "connecting to upstream";
|
|
28
|
516
|
|
|
517 r->connection->single_connection = 0;
|
|
|
518
|
|
262
|
519 if (u->state && u->state->response_sec) {
|
|
214
|
520 tp = ngx_timeofday();
|
|
262
|
521 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
522 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
523 }
|
|
|
524
|
|
296
|
525 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
526 if (u->state == NULL) {
|
|
|
527 ngx_http_upstream_finalize_request(r, u,
|
|
|
528 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
529 return;
|
|
|
530 }
|
|
|
531
|
|
|
532 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
533
|
|
|
534 tp = ngx_timeofday();
|
|
262
|
535 u->state->response_sec = tp->sec;
|
|
|
536 u->state->response_msec = tp->msec;
|
|
214
|
537
|
|
28
|
538 rc = ngx_event_connect_peer(&u->peer);
|
|
|
539
|
|
|
540 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
541 "http upstream connect: %i", rc);
|
|
|
542
|
|
|
543 if (rc == NGX_ERROR) {
|
|
|
544 ngx_http_upstream_finalize_request(r, u,
|
|
|
545 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
546 return;
|
|
|
547 }
|
|
|
548
|
|
260
|
549 u->state->peer = u->peer.name;
|
|
28
|
550
|
|
92
|
551 if (rc == NGX_BUSY) {
|
|
|
552 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
553 }
|
|
|
554
|
|
|
555 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
556 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
557 return;
|
|
|
558 }
|
|
|
559
|
|
126
|
560 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
561
|
|
28
|
562 c = u->peer.connection;
|
|
|
563
|
|
|
564 c->data = r;
|
|
140
|
565
|
|
58
|
566 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
567 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
568
|
|
|
569 c->sendfile = r->connection->sendfile;
|
|
|
570
|
|
|
571 c->pool = r->pool;
|
|
|
572 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
573
|
|
|
574 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
575
|
|
|
576 u->writer.out = NULL;
|
|
|
577 u->writer.last = &u->writer.out;
|
|
|
578 u->writer.connection = c;
|
|
|
579 u->writer.limit = 0;
|
|
|
580
|
|
|
581 if (u->request_sent) {
|
|
58
|
582 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
583 ngx_http_upstream_finalize_request(r, u,
|
|
|
584 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
585 return;
|
|
|
586 }
|
|
28
|
587 }
|
|
|
588
|
|
276
|
589 if (r->request_body
|
|
|
590 && r->request_body->buf
|
|
|
591 && r->request_body->temp_file
|
|
|
592 && r == r->main)
|
|
|
593 {
|
|
122
|
594 /*
|
|
|
595 * the r->request_body->buf can be reused for one request only,
|
|
|
596 * the subrequests should allocate their own temporay bufs
|
|
|
597 */
|
|
|
598
|
|
|
599 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
600 if (u->output.free == NULL) {
|
|
|
601 ngx_http_upstream_finalize_request(r, u,
|
|
|
602 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
603 return;
|
|
28
|
604 }
|
|
122
|
605
|
|
|
606 u->output.free->buf = r->request_body->buf;
|
|
|
607 u->output.free->next = NULL;
|
|
|
608 u->output.allocated = 1;
|
|
|
609
|
|
|
610 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
611 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
612 r->request_body->buf->tag = u->output.tag;
|
|
28
|
613 }
|
|
|
614
|
|
|
615 u->request_sent = 0;
|
|
|
616
|
|
|
617 if (rc == NGX_AGAIN) {
|
|
|
618 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
619 return;
|
|
|
620 }
|
|
|
621
|
|
126
|
622 #if (NGX_HTTP_SSL)
|
|
|
623
|
|
140
|
624 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
625 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629 #endif
|
|
|
630
|
|
28
|
631 ngx_http_upstream_send_request(r, u);
|
|
|
632 }
|
|
|
633
|
|
|
634
|
|
126
|
635 #if (NGX_HTTP_SSL)
|
|
|
636
|
|
|
637 static void
|
|
140
|
638 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
639 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
640 {
|
|
260
|
641 ngx_int_t rc;
|
|
140
|
642
|
|
|
643 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
644 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
645 == NGX_ERROR)
|
|
|
646 {
|
|
|
647 ngx_http_upstream_finalize_request(r, u,
|
|
|
648 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
649 return;
|
|
|
650 }
|
|
|
651
|
|
|
652 c->sendfile = 0;
|
|
168
|
653 u->output.sendfile = 0;
|
|
140
|
654
|
|
260
|
655 if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) {
|
|
140
|
656 ngx_http_upstream_finalize_request(r, u,
|
|
|
657 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
658 return;
|
|
|
659 }
|
|
|
660
|
|
190
|
661 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
662
|
|
140
|
663 rc = ngx_ssl_handshake(c);
|
|
|
664
|
|
|
665 if (rc == NGX_AGAIN) {
|
|
|
666 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
667 return;
|
|
|
668 }
|
|
|
669
|
|
|
670 ngx_http_upstream_ssl_handshake(c);
|
|
|
671 }
|
|
|
672
|
|
|
673
|
|
|
674 static void
|
|
126
|
675 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
676 {
|
|
|
677 ngx_http_request_t *r;
|
|
|
678 ngx_http_upstream_t *u;
|
|
|
679
|
|
|
680 r = c->data;
|
|
|
681 u = r->upstream;
|
|
|
682
|
|
|
683 if (c->ssl->handshaked) {
|
|
|
684
|
|
260
|
685 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
686
|
|
126
|
687 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
688 c->read->handler = ngx_http_upstream_process_header;
|
|
|
689
|
|
|
690 ngx_http_upstream_send_request(r, u);
|
|
|
691
|
|
|
692 return;
|
|
|
693 }
|
|
|
694
|
|
|
695 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
696
|
|
|
697 }
|
|
|
698
|
|
|
699 #endif
|
|
|
700
|
|
|
701
|
|
58
|
702 static ngx_int_t
|
|
36
|
703 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
704 {
|
|
|
705 ngx_chain_t *cl;
|
|
|
706
|
|
58
|
707 if (u->reinit_request(r) != NGX_OK) {
|
|
|
708 return NGX_ERROR;
|
|
|
709 }
|
|
|
710
|
|
|
711 ngx_memzero(&r->upstream->headers_in,
|
|
|
712 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
713
|
|
|
714 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
715 sizeof(ngx_table_elt_t))
|
|
|
716 != NGX_OK)
|
|
58
|
717 {
|
|
|
718 return NGX_ERROR;
|
|
28
|
719 }
|
|
|
720
|
|
|
721 /* reinit the request chain */
|
|
126
|
722
|
|
58
|
723 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
724 cl->buf->pos = cl->buf->start;
|
|
|
725 cl->buf->file_pos = 0;
|
|
|
726 }
|
|
|
727
|
|
58
|
728 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
729
|
|
122
|
730 if (r->request_body && r->request_body->temp_file
|
|
146
|
731 && r != r->main && u->output.buf)
|
|
122
|
732 {
|
|
|
733 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
734 if (u->output.free == NULL) {
|
|
|
735 return NGX_ERROR;
|
|
58
|
736 }
|
|
122
|
737
|
|
|
738 u->output.free->buf = u->output.buf;
|
|
|
739 u->output.free->next = NULL;
|
|
|
740
|
|
|
741 u->output.buf->pos = u->output.buf->start;
|
|
|
742 u->output.buf->last = u->output.buf->start;
|
|
58
|
743 }
|
|
28
|
744
|
|
|
745 u->output.buf = NULL;
|
|
|
746 u->output.in = NULL;
|
|
|
747 u->output.busy = NULL;
|
|
126
|
748
|
|
130
|
749 /* reinit u->buffer */
|
|
126
|
750
|
|
28
|
751 #if 0
|
|
|
752 if (u->cache) {
|
|
130
|
753 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
754 u->buffer.last = u->buffer.pos;
|
|
28
|
755
|
|
|
756 } else {
|
|
130
|
757 u->buffer.pos = u->buffer.start;
|
|
|
758 u->buffer.last = u->buffer.start;
|
|
28
|
759 }
|
|
|
760 #else
|
|
58
|
761
|
|
130
|
762 u->buffer.pos = u->buffer.start;
|
|
|
763 u->buffer.last = u->buffer.start;
|
|
58
|
764
|
|
28
|
765 #endif
|
|
|
766
|
|
58
|
767 return NGX_OK;
|
|
28
|
768 }
|
|
|
769
|
|
|
770
|
|
36
|
771 static void
|
|
|
772 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
773 {
|
|
294
|
774 ngx_int_t rc;
|
|
32
|
775 ngx_connection_t *c;
|
|
126
|
776
|
|
28
|
777 c = u->peer.connection;
|
|
|
778
|
|
|
779 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
780 "http upstream send request");
|
|
|
781
|
|
294
|
782 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
783 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
784 return;
|
|
28
|
785 }
|
|
|
786
|
|
32
|
787 c->log->action = "sending request to upstream";
|
|
28
|
788
|
|
58
|
789 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
790
|
|
|
791 u->request_sent = 1;
|
|
|
792
|
|
|
793 if (rc == NGX_ERROR) {
|
|
|
794 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
795 return;
|
|
|
796 }
|
|
|
797
|
|
|
798 if (c->write->timer_set) {
|
|
|
799 ngx_del_timer(c->write);
|
|
|
800 }
|
|
|
801
|
|
|
802 if (rc == NGX_AGAIN) {
|
|
|
803 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
804
|
|
|
805 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
806 {
|
|
|
807 ngx_http_upstream_finalize_request(r, u,
|
|
|
808 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
809 return;
|
|
|
810 }
|
|
|
811
|
|
|
812 return;
|
|
|
813 }
|
|
|
814
|
|
|
815 /* rc == NGX_OK */
|
|
|
816
|
|
|
817 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
818 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
819 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
820 ngx_tcp_push_n " failed");
|
|
|
821 ngx_http_upstream_finalize_request(r, u,
|
|
|
822 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
823 return;
|
|
28
|
824 }
|
|
|
825
|
|
|
826 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
827 }
|
|
126
|
828
|
|
28
|
829 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
830
|
|
|
831 #if 1
|
|
|
832 if (c->read->ready) {
|
|
126
|
833
|
|
28
|
834 /* post aio operation */
|
|
|
835
|
|
|
836 /*
|
|
|
837 * TODO comment
|
|
|
838 * although we can post aio operation just in the end
|
|
|
839 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
840 * it's better to do here because we postpone header buffer allocation
|
|
|
841 */
|
|
|
842
|
|
|
843 ngx_http_upstream_process_header(c->read);
|
|
|
844 return;
|
|
|
845 }
|
|
|
846 #endif
|
|
|
847
|
|
58
|
848 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
849
|
|
58
|
850 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
851 ngx_http_upstream_finalize_request(r, u,
|
|
|
852 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
853 return;
|
|
|
854 }
|
|
|
855 }
|
|
|
856
|
|
|
857
|
|
36
|
858 static void
|
|
|
859 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
860 {
|
|
|
861 ngx_connection_t *c;
|
|
|
862 ngx_http_request_t *r;
|
|
|
863 ngx_http_upstream_t *u;
|
|
|
864
|
|
|
865 c = wev->data;
|
|
|
866 r = c->data;
|
|
|
867 u = r->upstream;
|
|
|
868
|
|
|
869 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
870 "http upstream send request handler");
|
|
|
871
|
|
|
872 if (wev->timedout) {
|
|
|
873 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
874 return;
|
|
|
875 }
|
|
|
876
|
|
140
|
877 #if (NGX_HTTP_SSL)
|
|
|
878
|
|
|
879 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
880 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
881 return;
|
|
|
882 }
|
|
|
883
|
|
|
884 #endif
|
|
|
885
|
|
200
|
886 if (u->header_sent) {
|
|
|
887 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
888
|
|
|
889 (void) ngx_handle_write_event(wev, 0);
|
|
|
890
|
|
|
891 return;
|
|
|
892 }
|
|
|
893
|
|
28
|
894 ngx_http_upstream_send_request(r, u);
|
|
|
895 }
|
|
|
896
|
|
|
897
|
|
36
|
898 static void
|
|
|
899 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
900 {
|
|
64
|
901 ssize_t n;
|
|
|
902 ngx_int_t rc;
|
|
122
|
903 ngx_str_t *uri, args;
|
|
198
|
904 ngx_uint_t i, flags;
|
|
64
|
905 ngx_list_part_t *part;
|
|
|
906 ngx_table_elt_t *h;
|
|
|
907 ngx_connection_t *c;
|
|
|
908 ngx_http_request_t *r;
|
|
|
909 ngx_http_upstream_t *u;
|
|
|
910 ngx_http_err_page_t *err_page;
|
|
|
911 ngx_http_core_loc_conf_t *clcf;
|
|
|
912 ngx_http_upstream_header_t *hh;
|
|
|
913 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
914
|
|
|
915 c = rev->data;
|
|
|
916 r = c->data;
|
|
|
917 u = r->upstream;
|
|
|
918
|
|
|
919 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
920 "http upstream process header");
|
|
28
|
921
|
|
32
|
922 c->log->action = "reading response header from upstream";
|
|
28
|
923
|
|
|
924 if (rev->timedout) {
|
|
|
925 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
926 return;
|
|
|
927 }
|
|
126
|
928
|
|
294
|
929 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
930 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
931 return;
|
|
|
932 }
|
|
|
933
|
|
130
|
934 if (u->buffer.start == NULL) {
|
|
|
935 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
936 if (u->buffer.start == NULL) {
|
|
28
|
937 ngx_http_upstream_finalize_request(r, u,
|
|
|
938 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
939 return;
|
|
|
940 }
|
|
|
941
|
|
130
|
942 u->buffer.pos = u->buffer.start;
|
|
|
943 u->buffer.last = u->buffer.start;
|
|
|
944 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
945 u->buffer.temporary = 1;
|
|
|
946
|
|
|
947 u->buffer.tag = u->output.tag;
|
|
28
|
948
|
|
58
|
949 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
950 sizeof(ngx_table_elt_t))
|
|
|
951 != NGX_OK)
|
|
58
|
952 {
|
|
|
953 ngx_http_upstream_finalize_request(r, u,
|
|
|
954 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
955 return;
|
|
|
956 }
|
|
|
957
|
|
28
|
958 #if 0
|
|
|
959 if (u->cache) {
|
|
130
|
960 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
961 u->buffer.last = u->buffer.pos;
|
|
28
|
962 }
|
|
|
963 #endif
|
|
|
964 }
|
|
|
965
|
|
130
|
966 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
260
|
967 u->buffer.end - u->buffer.last);
|
|
28
|
968
|
|
|
969 if (n == NGX_AGAIN) {
|
|
|
970 #if 0
|
|
|
971 ngx_add_timer(rev, u->read_timeout);
|
|
|
972 #endif
|
|
|
973
|
|
|
974 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
975 ngx_http_upstream_finalize_request(r, u,
|
|
|
976 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
977 return;
|
|
|
978 }
|
|
|
979
|
|
|
980 return;
|
|
|
981 }
|
|
|
982
|
|
|
983 if (n == 0) {
|
|
|
984 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
985 "upstream prematurely closed connection");
|
|
|
986 }
|
|
|
987
|
|
|
988 if (n == NGX_ERROR || n == 0) {
|
|
|
989 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
990 return;
|
|
|
991 }
|
|
|
992
|
|
130
|
993 u->buffer.last += n;
|
|
28
|
994
|
|
|
995 #if 0
|
|
|
996 u->valid_header_in = 0;
|
|
|
997
|
|
|
998 u->peer.cached = 0;
|
|
|
999 #endif
|
|
|
1000
|
|
|
1001 rc = u->process_header(r);
|
|
|
1002
|
|
|
1003 if (rc == NGX_AGAIN) {
|
|
|
1004 #if 0
|
|
|
1005 ngx_add_timer(rev, u->read_timeout);
|
|
|
1006 #endif
|
|
|
1007
|
|
130
|
1008 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1009 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1010 "upstream sent too big header");
|
|
|
1011
|
|
|
1012 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1013 return;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1017 ngx_http_upstream_finalize_request(r, u,
|
|
|
1018 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1019 return;
|
|
|
1020 }
|
|
|
1021
|
|
|
1022 return;
|
|
|
1023 }
|
|
|
1024
|
|
|
1025 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1027 return;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1031 ngx_http_upstream_finalize_request(r, u,
|
|
|
1032 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1033 return;
|
|
|
1034 }
|
|
|
1035
|
|
|
1036 /* rc == NGX_OK */
|
|
|
1037
|
|
248
|
1038 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1039 && r->subrequest_in_memory)
|
|
|
1040 {
|
|
|
1041 u->buffer.last = u->buffer.pos;
|
|
|
1042 }
|
|
|
1043
|
|
78
|
1044 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1045
|
|
|
1046 if (u->peer.tries > 1
|
|
|
1047 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1048 {
|
|
|
1049 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1050 return;
|
|
|
1051 }
|
|
|
1052
|
|
|
1053 #if (NGX_HTTP_CACHE)
|
|
|
1054
|
|
|
1055 if (u->peer.tries == 0
|
|
|
1056 && u->stale
|
|
|
1057 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1058 {
|
|
|
1059 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1060 ngx_http_send_cached_response(r));
|
|
58
|
1061 return;
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 #endif
|
|
|
1065 }
|
|
|
1066
|
|
146
|
1067 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1068
|
|
|
1069 if (u->peer.tries > 1
|
|
|
1070 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1071 {
|
|
|
1072 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1073 return;
|
|
|
1074 }
|
|
|
1075
|
|
224
|
1076 if (u->conf->intercept_404) {
|
|
|
1077 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1078 return;
|
|
|
1079 }
|
|
58
|
1080 }
|
|
|
1081
|
|
|
1082
|
|
78
|
1083 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1084 && u->conf->intercept_errors)
|
|
36
|
1085 {
|
|
|
1086 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1087
|
|
|
1088 if (clcf->error_pages) {
|
|
|
1089
|
|
|
1090 err_page = clcf->error_pages->elts;
|
|
|
1091 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1092 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1093
|
|
|
1094 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1095
|
|
|
1096 r->headers_out.www_authenticate =
|
|
|
1097 ngx_list_push(&r->headers_out.headers);
|
|
|
1098
|
|
|
1099 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1100 ngx_http_upstream_finalize_request(r, u,
|
|
|
1101 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1102 return;
|
|
|
1103 }
|
|
|
1104
|
|
126
|
1105 *r->headers_out.www_authenticate =
|
|
78
|
1106 *u->headers_in.www_authenticate;
|
|
|
1107 }
|
|
|
1108
|
|
36
|
1109 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1110 u->headers_in.status_n);
|
|
36
|
1111 return;
|
|
|
1112 }
|
|
|
1113 }
|
|
|
1114 }
|
|
|
1115 }
|
|
|
1116
|
|
230
|
1117 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1118
|
|
64
|
1119 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1120
|
|
64
|
1121 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1122
|
|
|
1123 part = &r->upstream->headers_in.headers.part;
|
|
|
1124 h = part->elts;
|
|
|
1125
|
|
|
1126 for (i = 0; /* void */; i++) {
|
|
|
1127
|
|
|
1128 if (i >= part->nelts) {
|
|
|
1129 if (part->next == NULL) {
|
|
|
1130 break;
|
|
|
1131 }
|
|
126
|
1132
|
|
64
|
1133 part = part->next;
|
|
|
1134 h = part->elts;
|
|
|
1135 i = 0;
|
|
|
1136 }
|
|
|
1137
|
|
198
|
1138 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1139 h[i].lowcase_key, h[i].key.len);
|
|
|
1140
|
|
|
1141 if (hh && hh->redirect) {
|
|
|
1142 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1143 ngx_http_finalize_request(r,
|
|
244
|
1144 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1145 return;
|
|
|
1146 }
|
|
|
1147 }
|
|
|
1148 }
|
|
|
1149
|
|
122
|
1150 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1151 args.len = 0;
|
|
|
1152 args.data = NULL;
|
|
|
1153 flags = 0;
|
|
|
1154
|
|
|
1155 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1156 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1157 return;
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1161 r->zero_in_uri = 1;
|
|
|
1162 }
|
|
|
1163
|
|
202
|
1164 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1165 r->method = NGX_HTTP_GET;
|
|
|
1166 }
|
|
|
1167
|
|
122
|
1168 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1169 return;
|
|
|
1170 }
|
|
|
1171
|
|
58
|
1172 part = &r->upstream->headers_in.headers.part;
|
|
|
1173 h = part->elts;
|
|
|
1174
|
|
|
1175 for (i = 0; /* void */; i++) {
|
|
28
|
1176
|
|
58
|
1177 if (i >= part->nelts) {
|
|
|
1178 if (part->next == NULL) {
|
|
|
1179 break;
|
|
|
1180 }
|
|
126
|
1181
|
|
58
|
1182 part = part->next;
|
|
|
1183 h = part->elts;
|
|
|
1184 i = 0;
|
|
|
1185 }
|
|
|
1186
|
|
198
|
1187 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1188 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1189 {
|
|
198
|
1190 continue;
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1194 h[i].lowcase_key, h[i].key.len);
|
|
|
1195
|
|
|
1196 if (hh) {
|
|
|
1197 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1198 ngx_http_upstream_finalize_request(r, u,
|
|
|
1199 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1200 return;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 continue;
|
|
|
1204 }
|
|
|
1205
|
|
|
1206 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1207 ngx_http_upstream_finalize_request(r, u,
|
|
|
1208 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1209 return;
|
|
|
1210 }
|
|
|
1211 }
|
|
|
1212
|
|
198
|
1213 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1214 r->headers_out.server->hash = 0;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1218 r->headers_out.date->hash = 0;
|
|
|
1219 }
|
|
|
1220
|
|
78
|
1221 r->headers_out.status = u->headers_in.status_n;
|
|
|
1222 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1223
|
|
130
|
1224 if (r->headers_out.content_length_n != -1) {
|
|
|
1225 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1226
|
|
|
1227 } else {
|
|
|
1228 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1229 }
|
|
|
1230
|
|
248
|
1231 if (!r->subrequest_in_memory) {
|
|
|
1232 ngx_http_upstream_send_response(r, u);
|
|
|
1233 return;
|
|
|
1234 }
|
|
|
1235
|
|
|
1236 /* subrequest content in memory */
|
|
|
1237
|
|
|
1238 if (u->input_filter == NULL) {
|
|
|
1239 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1240 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1241 u->input_filter_ctx = r;
|
|
|
1242 }
|
|
|
1243
|
|
|
1244 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1245 ngx_http_upstream_finalize_request(r, u,
|
|
|
1246 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1247 return;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1251 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1252 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1253 return;
|
|
|
1254 }
|
|
|
1255
|
|
|
1256 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1257 return;
|
|
|
1258 }
|
|
|
1259
|
|
|
1260 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1261
|
|
|
1262 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1263 }
|
|
|
1264
|
|
|
1265
|
|
294
|
1266 static ngx_int_t
|
|
|
1267 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1268 {
|
|
|
1269 int err;
|
|
|
1270 socklen_t len;
|
|
|
1271
|
|
|
1272 #if (NGX_HAVE_KQUEUE)
|
|
|
1273
|
|
|
1274 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1275 if (c->write->pending_eof) {
|
|
|
1276 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1277 "kevent() reported that connect() failed");
|
|
|
1278 return NGX_ERROR;
|
|
|
1279 }
|
|
294
|
1280
|
|
|
1281 } else
|
|
|
1282 #endif
|
|
|
1283 {
|
|
296
|
1284 err = 0;
|
|
|
1285 len = sizeof(int);
|
|
|
1286
|
|
|
1287 /*
|
|
|
1288 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1289 * Solaris returns -1 and sets errno
|
|
|
1290 */
|
|
|
1291
|
|
|
1292 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1293 == -1)
|
|
|
1294 {
|
|
|
1295 err = ngx_errno;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298 if (err) {
|
|
|
1299 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1300 return NGX_ERROR;
|
|
|
1301 }
|
|
294
|
1302 }
|
|
|
1303
|
|
|
1304 return NGX_OK;
|
|
|
1305 }
|
|
|
1306
|
|
|
1307
|
|
248
|
1308 static void
|
|
|
1309 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1310 {
|
|
|
1311 size_t size;
|
|
|
1312 ssize_t n;
|
|
|
1313 ngx_buf_t *b;
|
|
|
1314 ngx_connection_t *c;
|
|
|
1315 ngx_http_request_t *r;
|
|
|
1316 ngx_http_upstream_t *u;
|
|
|
1317
|
|
|
1318 c = rev->data;
|
|
|
1319 r = c->data;
|
|
|
1320 u = r->upstream;
|
|
|
1321
|
|
|
1322 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1323 "http upstream process body on memory");
|
|
|
1324
|
|
|
1325 if (rev->timedout) {
|
|
|
1326 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1327 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1328 return;
|
|
|
1329 }
|
|
|
1330
|
|
|
1331 b = &u->buffer;
|
|
|
1332
|
|
|
1333 for ( ;; ) {
|
|
|
1334
|
|
|
1335 size = b->end - b->last;
|
|
|
1336
|
|
|
1337 if (size == 0) {
|
|
|
1338 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1339 "upstream buffer is too small to read repsonse");
|
|
|
1340 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1341 return;
|
|
|
1342 }
|
|
|
1343
|
|
|
1344 n = c->recv(c, b->last, size);
|
|
|
1345
|
|
|
1346 if (n == NGX_AGAIN) {
|
|
|
1347 break;
|
|
|
1348 }
|
|
|
1349
|
|
|
1350 if (n == 0 || n == NGX_ERROR) {
|
|
|
1351 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1352 return;
|
|
|
1353 }
|
|
|
1354
|
|
|
1355 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1356 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1357 return;
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 if (!rev->ready) {
|
|
|
1361 break;
|
|
|
1362 }
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1366 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1367 return;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 if (rev->active) {
|
|
|
1371 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1372
|
|
|
1373 } else if (rev->timer_set) {
|
|
|
1374 ngx_del_timer(rev);
|
|
|
1375 }
|
|
230
|
1376 }
|
|
|
1377
|
|
|
1378
|
|
|
1379 static void
|
|
|
1380 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1381 {
|
|
|
1382 int tcp_nodelay;
|
|
|
1383 ssize_t size;
|
|
|
1384 ngx_int_t rc;
|
|
|
1385 ngx_event_pipe_t *p;
|
|
|
1386 ngx_connection_t *c;
|
|
|
1387 ngx_pool_cleanup_t *cl;
|
|
|
1388 ngx_pool_cleanup_file_t *clf;
|
|
|
1389 ngx_http_core_loc_conf_t *clcf;
|
|
|
1390
|
|
58
|
1391 rc = ngx_http_send_header(r);
|
|
28
|
1392
|
|
274
|
1393 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1394 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1395 return;
|
|
|
1396 }
|
|
|
1397
|
|
|
1398 u->header_sent = 1;
|
|
|
1399
|
|
122
|
1400 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1401 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1402 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1403 clf = cl->data;
|
|
|
1404
|
|
|
1405 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1406 cl->handler(clf);
|
|
|
1407 cl->handler = NULL;
|
|
208
|
1408 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1409 break;
|
|
|
1410 }
|
|
|
1411 }
|
|
|
1412 }
|
|
|
1413 }
|
|
|
1414
|
|
132
|
1415 c = r->connection;
|
|
|
1416
|
|
130
|
1417 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1418
|
|
198
|
1419 if (!u->buffering) {
|
|
130
|
1420
|
|
|
1421 if (u->input_filter == NULL) {
|
|
|
1422 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1423 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1424 u->input_filter_ctx = r;
|
|
|
1425 }
|
|
|
1426
|
|
|
1427 u->peer.connection->read->handler =
|
|
|
1428 ngx_http_upstream_process_non_buffered_body;
|
|
|
1429 r->write_event_handler =
|
|
|
1430 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1431
|
|
|
1432 r->limit_rate = 0;
|
|
|
1433
|
|
|
1434 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1435 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1436 return;
|
|
|
1437 }
|
|
|
1438
|
|
132
|
1439 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1440 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1441
|
|
|
1442 tcp_nodelay = 1;
|
|
|
1443
|
|
|
1444 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1445 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1446 {
|
|
|
1447 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1448 "setsockopt(TCP_NODELAY) failed");
|
|
|
1449 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1450 return;
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1454 }
|
|
|
1455
|
|
130
|
1456 size = u->buffer.last - u->buffer.pos;
|
|
|
1457
|
|
|
1458 if (size) {
|
|
|
1459 u->buffer.last = u->buffer.pos;
|
|
|
1460
|
|
|
1461 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1462 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1463 return;
|
|
|
1464 }
|
|
|
1465
|
|
132
|
1466 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1467
|
|
|
1468 } else {
|
|
|
1469 u->buffer.pos = u->buffer.start;
|
|
|
1470 u->buffer.last = u->buffer.start;
|
|
|
1471
|
|
|
1472 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1473 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1474 return;
|
|
|
1475 }
|
|
|
1476 }
|
|
|
1477
|
|
|
1478 return;
|
|
|
1479 }
|
|
|
1480
|
|
28
|
1481 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1482
|
|
|
1483 #if 0
|
|
|
1484
|
|
|
1485 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1486 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1487 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1488 ngx_close_file_n " \"%s\" failed",
|
|
|
1489 u->cache->ctx.file.name.data);
|
|
|
1490 }
|
|
|
1491 }
|
|
|
1492
|
|
|
1493 if (u->cachable) {
|
|
130
|
1494 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1495
|
|
|
1496 header->expires = u->cache->ctx.expires;
|
|
|
1497 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1498 header->date = u->cache->ctx.date;
|
|
|
1499 header->length = r->headers_out.content_length_n;
|
|
|
1500 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1501
|
|
|
1502 header->key_len = u->cache->ctx.key0.len;
|
|
|
1503 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1504 header->key[header->key_len] = LF;
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 #endif
|
|
|
1508
|
|
130
|
1509 p = u->pipe;
|
|
28
|
1510
|
|
|
1511 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1512 p->output_ctx = r;
|
|
|
1513 p->tag = u->output.tag;
|
|
126
|
1514 p->bufs = u->conf->bufs;
|
|
28
|
1515 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1516 p->upstream = u->peer.connection;
|
|
132
|
1517 p->downstream = c;
|
|
28
|
1518 p->pool = r->pool;
|
|
132
|
1519 p->log = c->log;
|
|
126
|
1520
|
|
28
|
1521 p->cachable = u->cachable;
|
|
|
1522
|
|
50
|
1523 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1524 if (p->temp_file == NULL) {
|
|
28
|
1525 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1526 return;
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1530 p->temp_file->file.log = c->log;
|
|
28
|
1531 p->temp_file->path = u->conf->temp_path;
|
|
|
1532 p->temp_file->pool = r->pool;
|
|
126
|
1533
|
|
28
|
1534 if (u->cachable) {
|
|
|
1535 p->temp_file->persistent = 1;
|
|
|
1536 } else {
|
|
216
|
1537 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1538 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1539 "to a temporary file";
|
|
|
1540 }
|
|
|
1541
|
|
|
1542 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1543 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1544
|
|
50
|
1545 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1546 if (p->preread_bufs == NULL) {
|
|
28
|
1547 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1548 return;
|
|
|
1549 }
|
|
130
|
1550 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1551 p->preread_bufs->next = NULL;
|
|
130
|
1552 u->buffer.recycled = 1;
|
|
|
1553
|
|
|
1554 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1555
|
|
|
1556 if (u->cachable) {
|
|
|
1557 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1558 if (p->buf_to_file == NULL) {
|
|
|
1559 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1560 return;
|
|
|
1561 }
|
|
130
|
1562 p->buf_to_file->pos = u->buffer.start;
|
|
|
1563 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1564 p->buf_to_file->temporary = 1;
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1568 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1569 p->single_buf = 1;
|
|
|
1570 }
|
|
|
1571
|
|
|
1572 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1573 p->free_bufs = 1;
|
|
|
1574
|
|
|
1575 /*
|
|
130
|
1576 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1577 * as though these bytes were read
|
|
|
1578 */
|
|
130
|
1579 u->buffer.last = u->buffer.pos;
|
|
28
|
1580
|
|
|
1581 if (u->conf->cyclic_temp_file) {
|
|
|
1582
|
|
|
1583 /*
|
|
|
1584 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1585 * because the writing a new data may interfere with sendfile()
|
|
|
1586 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1587 */
|
|
|
1588
|
|
|
1589 p->cyclic_temp_file = 1;
|
|
132
|
1590 c->sendfile = 0;
|
|
28
|
1591
|
|
|
1592 } else {
|
|
|
1593 p->cyclic_temp_file = 0;
|
|
|
1594 }
|
|
|
1595
|
|
|
1596 p->read_timeout = u->conf->read_timeout;
|
|
|
1597 p->send_timeout = clcf->send_timeout;
|
|
|
1598 p->send_lowat = clcf->send_lowat;
|
|
|
1599
|
|
58
|
1600 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1601 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1602
|
|
|
1603 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1604 }
|
|
|
1605
|
|
|
1606
|
|
36
|
1607 static void
|
|
130
|
1608 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1609 {
|
|
|
1610 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1611 }
|
|
|
1612
|
|
|
1613
|
|
|
1614 static void
|
|
|
1615 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1616 {
|
|
|
1617 size_t size;
|
|
|
1618 ssize_t n;
|
|
|
1619 ngx_buf_t *b;
|
|
132
|
1620 ngx_int_t rc;
|
|
130
|
1621 ngx_uint_t do_write;
|
|
260
|
1622 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1623 ngx_http_request_t *r;
|
|
|
1624 ngx_http_upstream_t *u;
|
|
|
1625 ngx_http_core_loc_conf_t *clcf;
|
|
|
1626
|
|
|
1627 c = ev->data;
|
|
244
|
1628 r = c->data;
|
|
|
1629 u = r->upstream;
|
|
130
|
1630
|
|
|
1631 if (ev->write) {
|
|
|
1632 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1633 "http upstream process non buffered downstream");
|
|
|
1634 c->log->action = "sending to client";
|
|
|
1635
|
|
|
1636 } else {
|
|
|
1637 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1638 "http upstream process non buffered upstream");
|
|
|
1639 c->log->action = "reading upstream";
|
|
|
1640 }
|
|
|
1641
|
|
|
1642 if (ev->timedout) {
|
|
|
1643 if (ev->write) {
|
|
|
1644 c->timedout = 1;
|
|
160
|
1645 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1646
|
|
130
|
1647 } else {
|
|
160
|
1648 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1649 }
|
|
244
|
1650
|
|
|
1651 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1652 return;
|
|
130
|
1653 }
|
|
|
1654
|
|
260
|
1655 downstream = r->connection;
|
|
|
1656 upstream = u->peer.connection;
|
|
130
|
1657
|
|
|
1658 b = &u->buffer;
|
|
|
1659
|
|
|
1660 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1661
|
|
206
|
1662 do_write = ev->write || u->length == 0;
|
|
130
|
1663
|
|
|
1664 for ( ;; ) {
|
|
|
1665
|
|
|
1666 if (do_write) {
|
|
|
1667
|
|
|
1668 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1669 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1670
|
|
260
|
1671 if (downstream->destroyed) {
|
|
132
|
1672 return;
|
|
|
1673 }
|
|
|
1674
|
|
|
1675 if (rc == NGX_ERROR) {
|
|
130
|
1676 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1677 return;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1681 &u->out_bufs, u->output.tag);
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 if (u->busy_bufs == NULL) {
|
|
|
1685
|
|
|
1686 if (u->length == 0
|
|
260
|
1687 || upstream->read->eof
|
|
|
1688 || upstream->read->error)
|
|
130
|
1689 {
|
|
|
1690 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1691 return;
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 b->pos = b->start;
|
|
|
1695 b->last = b->start;
|
|
|
1696 }
|
|
|
1697 }
|
|
|
1698
|
|
|
1699 size = b->end - b->last;
|
|
|
1700
|
|
|
1701 if (size > u->length) {
|
|
|
1702 size = u->length;
|
|
|
1703 }
|
|
|
1704
|
|
260
|
1705 if (size && upstream->read->ready) {
|
|
|
1706
|
|
|
1707 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1708
|
|
|
1709 if (n == NGX_AGAIN) {
|
|
|
1710 break;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 if (n > 0) {
|
|
|
1714 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1715 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1716 return;
|
|
|
1717 }
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 do_write = 1;
|
|
|
1721
|
|
|
1722 continue;
|
|
|
1723 }
|
|
|
1724
|
|
|
1725 break;
|
|
|
1726 }
|
|
|
1727
|
|
260
|
1728 if (downstream->data == r) {
|
|
|
1729 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1730 == NGX_ERROR)
|
|
|
1731 {
|
|
|
1732 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1733 return;
|
|
|
1734 }
|
|
130
|
1735 }
|
|
|
1736
|
|
276
|
1737 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1738 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1739
|
|
|
1740 } else if (downstream->write->timer_set) {
|
|
|
1741 ngx_del_timer(downstream->write);
|
|
130
|
1742 }
|
|
|
1743
|
|
260
|
1744 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1745 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1746 return;
|
|
|
1747 }
|
|
|
1748
|
|
276
|
1749 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1750 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1751
|
|
|
1752 } else if (upstream->read->timer_set) {
|
|
|
1753 ngx_del_timer(upstream->read);
|
|
130
|
1754 }
|
|
|
1755 }
|
|
|
1756
|
|
|
1757
|
|
|
1758 static ngx_int_t
|
|
|
1759 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1760 {
|
|
|
1761 return NGX_OK;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764
|
|
|
1765 static ngx_int_t
|
|
|
1766 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1767 {
|
|
|
1768 ngx_http_request_t *r = data;
|
|
|
1769
|
|
|
1770 ngx_buf_t *b;
|
|
|
1771 ngx_chain_t *cl, **ll;
|
|
|
1772 ngx_http_upstream_t *u;
|
|
|
1773
|
|
|
1774 u = r->upstream;
|
|
|
1775
|
|
|
1776 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1777 ll = &cl->next;
|
|
|
1778 }
|
|
|
1779
|
|
|
1780 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1781 if (cl == NULL) {
|
|
|
1782 return NGX_ERROR;
|
|
|
1783 }
|
|
|
1784
|
|
|
1785 *ll = cl;
|
|
|
1786
|
|
|
1787 cl->buf->flush = 1;
|
|
|
1788 cl->buf->memory = 1;
|
|
|
1789
|
|
|
1790 b = &u->buffer;
|
|
|
1791
|
|
|
1792 cl->buf->pos = b->last;
|
|
|
1793 b->last += bytes;
|
|
|
1794 cl->buf->last = b->last;
|
|
|
1795
|
|
|
1796 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1797 return NGX_OK;
|
|
|
1798 }
|
|
|
1799
|
|
|
1800 u->length -= bytes;
|
|
|
1801
|
|
|
1802 return NGX_OK;
|
|
|
1803 }
|
|
|
1804
|
|
|
1805
|
|
|
1806 static void
|
|
58
|
1807 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1808 {
|
|
|
1809 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1810 }
|
|
|
1811
|
|
|
1812
|
|
|
1813 static void
|
|
36
|
1814 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1815 {
|
|
58
|
1816 ngx_event_pipe_t *p;
|
|
132
|
1817 ngx_connection_t *c, *downstream;
|
|
284
|
1818 ngx_http_log_ctx_t *ctx;
|
|
28
|
1819 ngx_http_request_t *r;
|
|
|
1820 ngx_http_upstream_t *u;
|
|
|
1821
|
|
|
1822 c = ev->data;
|
|
|
1823 r = c->data;
|
|
|
1824 u = r->upstream;
|
|
132
|
1825 downstream = r->connection;
|
|
28
|
1826
|
|
|
1827 if (ev->write) {
|
|
32
|
1828 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1829 "http upstream process downstream");
|
|
|
1830 c->log->action = "sending to client";
|
|
126
|
1831
|
|
28
|
1832 } else {
|
|
32
|
1833 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1834 "http upstream process upstream");
|
|
|
1835 c->log->action = "reading upstream";
|
|
284
|
1836
|
|
|
1837 ctx = c->log->data;
|
|
|
1838 ctx->current_request = r;
|
|
28
|
1839 }
|
|
126
|
1840
|
|
130
|
1841 p = u->pipe;
|
|
28
|
1842
|
|
|
1843 if (ev->timedout) {
|
|
|
1844 if (ev->write) {
|
|
76
|
1845 if (ev->delayed) {
|
|
|
1846
|
|
|
1847 ev->timedout = 0;
|
|
|
1848 ev->delayed = 0;
|
|
|
1849
|
|
|
1850 if (!ev->ready) {
|
|
|
1851 ngx_add_timer(ev, p->send_timeout);
|
|
|
1852
|
|
|
1853 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1854 {
|
|
|
1855 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1856 return;
|
|
|
1857 }
|
|
|
1858
|
|
|
1859 return;
|
|
|
1860 }
|
|
|
1861
|
|
|
1862 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1863
|
|
|
1864 if (downstream->destroyed) {
|
|
|
1865 return;
|
|
|
1866 }
|
|
|
1867
|
|
76
|
1868 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1869 return;
|
|
|
1870 }
|
|
|
1871
|
|
|
1872 } else {
|
|
|
1873 p->downstream_error = 1;
|
|
126
|
1874 c->timedout = 1;
|
|
160
|
1875 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1876 }
|
|
28
|
1877
|
|
|
1878 } else {
|
|
126
|
1879 p->upstream_error = 1;
|
|
160
|
1880 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1881 }
|
|
|
1882
|
|
|
1883 } else {
|
|
76
|
1884 if (ev->write && ev->delayed) {
|
|
|
1885 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1886 "http downstream delayed");
|
|
|
1887
|
|
|
1888 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1889 return;
|
|
|
1890 }
|
|
|
1891
|
|
|
1892 return;
|
|
|
1893 }
|
|
|
1894
|
|
28
|
1895 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1896
|
|
|
1897 if (downstream->destroyed) {
|
|
|
1898 return;
|
|
|
1899 }
|
|
|
1900
|
|
28
|
1901 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1902 return;
|
|
|
1903 }
|
|
|
1904 }
|
|
126
|
1905
|
|
28
|
1906 if (u->peer.connection) {
|
|
|
1907
|
|
|
1908 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1909
|
|
|
1910 if (p->upstream_done && u->cachable) {
|
|
|
1911 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1912 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1913 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1914 return;
|
|
|
1915 }
|
|
|
1916
|
|
|
1917 } else if (p->upstream_eof && u->cachable) {
|
|
|
1918
|
|
|
1919 /* TODO: check length & update cache */
|
|
|
1920
|
|
|
1921 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1922 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1923 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1924 return;
|
|
|
1925 }
|
|
|
1926 }
|
|
|
1927
|
|
|
1928 #endif
|
|
|
1929
|
|
|
1930 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1931 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1932 "http upstream exit: %p", p->out);
|
|
28
|
1933 #if 0
|
|
|
1934 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1935 #endif
|
|
|
1936 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1937 return;
|
|
|
1938 }
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 if (p->downstream_error) {
|
|
32
|
1942 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1943 "http upstream downstream error");
|
|
28
|
1944
|
|
|
1945 if (!u->cachable && u->peer.connection) {
|
|
|
1946 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1947 }
|
|
|
1948 }
|
|
|
1949 }
|
|
|
1950
|
|
|
1951
|
|
36
|
1952 static void
|
|
|
1953 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1954 {
|
|
|
1955 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1956 "http upstream dummy handler");
|
|
|
1957 }
|
|
|
1958
|
|
|
1959
|
|
36
|
1960 static void
|
|
|
1961 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1962 ngx_uint_t ft_type)
|
|
28
|
1963 {
|
|
260
|
1964 ngx_uint_t status, state;
|
|
28
|
1965
|
|
|
1966 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
1967 "http next upstream, %xi", ft_type);
|
|
28
|
1968
|
|
|
1969 #if 0
|
|
|
1970 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1971 #endif
|
|
|
1972
|
|
74
|
1973 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
1974 state = NGX_PEER_NEXT;
|
|
74
|
1975 } else {
|
|
260
|
1976 state = NGX_PEER_FAILED;
|
|
28
|
1977 }
|
|
74
|
1978
|
|
260
|
1979 u->peer.free(&u->peer, u->peer.data, state);
|
|
74
|
1980
|
|
28
|
1981 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1982 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1983 "upstream timed out");
|
|
|
1984 }
|
|
126
|
1985
|
|
28
|
1986 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1987 status = 0;
|
|
|
1988
|
|
|
1989 } else {
|
|
|
1990 switch(ft_type) {
|
|
|
1991
|
|
|
1992 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1993 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1994 break;
|
|
|
1995
|
|
|
1996 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1997 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1998 break;
|
|
|
1999
|
|
|
2000 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2001 status = NGX_HTTP_NOT_FOUND;
|
|
|
2002 break;
|
|
|
2003
|
|
|
2004 /*
|
|
|
2005 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2006 * never reach here
|
|
|
2007 */
|
|
|
2008
|
|
|
2009 default:
|
|
|
2010 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2011 }
|
|
|
2012 }
|
|
|
2013
|
|
132
|
2014 if (r->connection->error) {
|
|
28
|
2015 ngx_http_upstream_finalize_request(r, u,
|
|
|
2016 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2017 return;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 if (status) {
|
|
|
2021 u->state->status = status;
|
|
|
2022
|
|
74
|
2023 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2024
|
|
|
2025 #if (NGX_HTTP_CACHE)
|
|
|
2026
|
|
|
2027 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2028 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2029 ngx_http_send_cached_response(r));
|
|
28
|
2030 return;
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 #endif
|
|
|
2034
|
|
|
2035 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2036 return;
|
|
|
2037 }
|
|
|
2038 }
|
|
|
2039
|
|
|
2040 if (u->peer.connection) {
|
|
|
2041 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2042 "close http upstream connection: %d",
|
|
|
2043 u->peer.connection->fd);
|
|
126
|
2044 #if (NGX_HTTP_SSL)
|
|
260
|
2045
|
|
126
|
2046 if (u->peer.connection->ssl) {
|
|
260
|
2047 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2048 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2049
|
|
|
2050 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2051 }
|
|
|
2052 #endif
|
|
260
|
2053
|
|
28
|
2054 ngx_close_connection(u->peer.connection);
|
|
|
2055 }
|
|
|
2056
|
|
|
2057 #if 0
|
|
|
2058 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2059 ngx_http_upstream_busy_lock(p);
|
|
|
2060 return;
|
|
|
2061 }
|
|
|
2062 #endif
|
|
|
2063
|
|
|
2064 ngx_http_upstream_connect(r, u);
|
|
|
2065 }
|
|
|
2066
|
|
|
2067
|
|
36
|
2068 static void
|
|
118
|
2069 ngx_http_upstream_cleanup(void *data)
|
|
|
2070 {
|
|
|
2071 ngx_http_request_t *r = data;
|
|
|
2072
|
|
|
2073 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2074 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2075
|
|
|
2076 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2077 }
|
|
|
2078
|
|
|
2079
|
|
|
2080 static void
|
|
36
|
2081 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2082 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2083 {
|
|
262
|
2084 ngx_time_t *tp;
|
|
112
|
2085
|
|
32
|
2086 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2087 "finalize http upstream request: %i", rc);
|
|
28
|
2088
|
|
118
|
2089 *u->cleanup = NULL;
|
|
|
2090
|
|
262
|
2091 if (u->state->response_sec) {
|
|
112
|
2092 tp = ngx_timeofday();
|
|
262
|
2093 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2094 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2095 }
|
|
|
2096
|
|
28
|
2097 u->finalize_request(r, rc);
|
|
|
2098
|
|
260
|
2099 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2100
|
|
28
|
2101 if (u->peer.connection) {
|
|
260
|
2102
|
|
126
|
2103 #if (NGX_HTTP_SSL)
|
|
|
2104
|
|
|
2105 /* TODO: do not shutdown persistent connection */
|
|
|
2106
|
|
|
2107 if (u->peer.connection->ssl) {
|
|
260
|
2108
|
|
|
2109 /*
|
|
|
2110 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2111 * and do not wait its "close notify" shutdown alert.
|
|
|
2112 * It is acceptable according to the TLS standard.
|
|
|
2113 */
|
|
|
2114
|
|
|
2115 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2116
|
|
|
2117 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2118 }
|
|
|
2119 #endif
|
|
260
|
2120
|
|
|
2121 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2122 "close http upstream connection: %d",
|
|
|
2123 u->peer.connection->fd);
|
|
|
2124
|
|
28
|
2125 ngx_close_connection(u->peer.connection);
|
|
|
2126 }
|
|
|
2127
|
|
32
|
2128 u->peer.connection = NULL;
|
|
|
2129
|
|
112
|
2130 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2131 {
|
|
|
2132 rc = 0;
|
|
|
2133 }
|
|
|
2134
|
|
130
|
2135 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2136 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2137 "http upstream temp fd: %d",
|
|
130
|
2138 u->pipe->temp_file->file.fd);
|
|
28
|
2139 }
|
|
|
2140
|
|
|
2141 #if 0
|
|
|
2142 if (u->cache) {
|
|
|
2143 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2144 "http upstream cache fd: %d",
|
|
28
|
2145 u->cache->ctx.file.fd);
|
|
|
2146 }
|
|
|
2147 #endif
|
|
|
2148
|
|
64
|
2149 if (rc == NGX_DECLINED) {
|
|
|
2150 return;
|
|
|
2151 }
|
|
|
2152
|
|
32
|
2153 r->connection->log->action = "sending to client";
|
|
|
2154
|
|
178
|
2155 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2156 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2157 }
|
|
|
2158
|
|
|
2159 ngx_http_finalize_request(r, rc);
|
|
|
2160 }
|
|
|
2161
|
|
|
2162
|
|
58
|
2163 static ngx_int_t
|
|
|
2164 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2165 ngx_uint_t offset)
|
|
126
|
2166 {
|
|
58
|
2167 ngx_table_elt_t **ph;
|
|
126
|
2168
|
|
58
|
2169 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2170
|
|
|
2171 if (*ph == NULL) {
|
|
|
2172 *ph = h;
|
|
|
2173 }
|
|
|
2174
|
|
|
2175 return NGX_OK;
|
|
|
2176 }
|
|
|
2177
|
|
|
2178
|
|
|
2179 static ngx_int_t
|
|
|
2180 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2181 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2182 {
|
|
|
2183 ngx_array_t *pa;
|
|
|
2184 ngx_table_elt_t **ph;
|
|
|
2185
|
|
|
2186 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2187
|
|
|
2188 if (pa->elts == NULL) {
|
|
|
2189 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2190 {
|
|
|
2191 return NGX_ERROR;
|
|
|
2192 }
|
|
|
2193 }
|
|
|
2194
|
|
|
2195 ph = ngx_array_push(pa);
|
|
|
2196 if (ph == NULL) {
|
|
|
2197 return NGX_ERROR;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 *ph = h;
|
|
|
2201
|
|
|
2202 return NGX_OK;
|
|
|
2203 }
|
|
|
2204
|
|
|
2205
|
|
|
2206 static ngx_int_t
|
|
|
2207 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2208 ngx_uint_t offset)
|
|
|
2209 {
|
|
|
2210 return NGX_OK;
|
|
|
2211 }
|
|
|
2212
|
|
|
2213
|
|
|
2214 static ngx_int_t
|
|
76
|
2215 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2216 ngx_uint_t offset)
|
|
126
|
2217 {
|
|
76
|
2218 ngx_int_t n;
|
|
|
2219
|
|
|
2220 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2221
|
|
|
2222 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2223
|
|
|
2224 if (n != NGX_ERROR) {
|
|
|
2225 r->limit_rate = (size_t) n;
|
|
|
2226 }
|
|
|
2227
|
|
|
2228 return NGX_OK;
|
|
|
2229 }
|
|
|
2230
|
|
|
2231
|
|
|
2232 static ngx_int_t
|
|
198
|
2233 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2234 ngx_uint_t offset)
|
|
|
2235 {
|
|
|
2236 u_char c0, c1, c2;
|
|
|
2237
|
|
|
2238 if (r->upstream->conf->change_buffering) {
|
|
|
2239
|
|
|
2240 if (h->value.len == 2) {
|
|
|
2241 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2242 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2243
|
|
|
2244 if (c0 == 'n' && c1 == 'o') {
|
|
|
2245 r->upstream->buffering = 0;
|
|
|
2246 }
|
|
|
2247
|
|
|
2248 } else if (h->value.len == 3) {
|
|
|
2249 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2250 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2251 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2252
|
|
|
2253 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2254 r->upstream->buffering = 1;
|
|
|
2255 }
|
|
|
2256 }
|
|
|
2257 }
|
|
|
2258
|
|
|
2259 return NGX_OK;
|
|
|
2260 }
|
|
|
2261
|
|
|
2262
|
|
|
2263 static ngx_int_t
|
|
206
|
2264 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2265 ngx_uint_t offset)
|
|
|
2266 {
|
|
|
2267 r->headers_out.override_charset = &h->value;
|
|
|
2268
|
|
|
2269 return NGX_OK;
|
|
|
2270 }
|
|
|
2271
|
|
|
2272
|
|
|
2273 static ngx_int_t
|
|
58
|
2274 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2275 ngx_uint_t offset)
|
|
|
2276 {
|
|
122
|
2277 ngx_table_elt_t *ho, **ph;
|
|
58
|
2278
|
|
|
2279 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2280 if (ho == NULL) {
|
|
|
2281 return NGX_ERROR;
|
|
|
2282 }
|
|
|
2283
|
|
|
2284 *ho = *h;
|
|
|
2285
|
|
122
|
2286 if (offset) {
|
|
|
2287 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2288 *ph = ho;
|
|
|
2289 }
|
|
|
2290
|
|
58
|
2291 return NGX_OK;
|
|
|
2292 }
|
|
|
2293
|
|
|
2294
|
|
|
2295 static ngx_int_t
|
|
|
2296 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2297 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2298 {
|
|
|
2299 ngx_array_t *pa;
|
|
|
2300 ngx_table_elt_t *ho, **ph;
|
|
|
2301
|
|
|
2302 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2303
|
|
|
2304 if (pa->elts == NULL) {
|
|
|
2305 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2306 {
|
|
|
2307 return NGX_ERROR;
|
|
|
2308 }
|
|
|
2309 }
|
|
|
2310
|
|
|
2311 ph = ngx_array_push(pa);
|
|
|
2312 if (ph == NULL) {
|
|
|
2313 return NGX_ERROR;
|
|
|
2314 }
|
|
|
2315
|
|
|
2316 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2317 if (ho == NULL) {
|
|
|
2318 return NGX_ERROR;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 *ho = *h;
|
|
|
2322 *ph = ho;
|
|
|
2323
|
|
|
2324 return NGX_OK;
|
|
|
2325 }
|
|
|
2326
|
|
|
2327
|
|
|
2328 static ngx_int_t
|
|
|
2329 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2330 ngx_uint_t offset)
|
|
|
2331 {
|
|
206
|
2332 u_char *p, *last;
|
|
|
2333
|
|
|
2334 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2335 r->headers_out.content_type = h->value;
|
|
|
2336
|
|
206
|
2337 for (p = h->value.data; *p; p++) {
|
|
|
2338
|
|
|
2339 if (*p != ';') {
|
|
|
2340 continue;
|
|
|
2341 }
|
|
|
2342
|
|
|
2343 last = p;
|
|
|
2344
|
|
|
2345 while (*++p == ' ') { /* void */ }
|
|
|
2346
|
|
286
|
2347 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2348 continue;
|
|
|
2349 }
|
|
|
2350
|
|
|
2351 p += 8;
|
|
|
2352
|
|
|
2353 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2354
|
|
|
2355 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2356 r->headers_out.charset.data = p;
|
|
292
|
2357
|
|
|
2358 return NGX_OK;
|
|
206
|
2359 }
|
|
|
2360
|
|
58
|
2361 return NGX_OK;
|
|
|
2362 }
|
|
|
2363
|
|
|
2364
|
|
|
2365 static ngx_int_t
|
|
|
2366 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2367 ngx_uint_t offset)
|
|
|
2368 {
|
|
|
2369 ngx_table_elt_t *ho;
|
|
|
2370
|
|
|
2371 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2372 if (ho == NULL) {
|
|
|
2373 return NGX_ERROR;
|
|
|
2374 }
|
|
|
2375
|
|
|
2376 *ho = *h;
|
|
|
2377
|
|
|
2378 r->headers_out.content_length = ho;
|
|
|
2379 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2380
|
|
|
2381 return NGX_OK;
|
|
|
2382 }
|
|
|
2383
|
|
|
2384
|
|
|
2385 static ngx_int_t
|
|
|
2386 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2387 ngx_uint_t offset)
|
|
|
2388 {
|
|
|
2389 ngx_int_t rc;
|
|
|
2390 ngx_table_elt_t *ho;
|
|
|
2391
|
|
|
2392 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2393 if (ho == NULL) {
|
|
|
2394 return NGX_ERROR;
|
|
|
2395 }
|
|
|
2396
|
|
|
2397 *ho = *h;
|
|
|
2398
|
|
|
2399 if (r->upstream->rewrite_redirect) {
|
|
|
2400 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2401
|
|
78
|
2402 if (rc == NGX_DECLINED) {
|
|
|
2403 return NGX_OK;
|
|
|
2404 }
|
|
|
2405
|
|
58
|
2406 if (rc == NGX_OK) {
|
|
|
2407 r->headers_out.location = ho;
|
|
|
2408
|
|
|
2409 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2410 "rewritten location: \"%V\"", &ho->value);
|
|
|
2411 }
|
|
|
2412
|
|
|
2413 return rc;
|
|
|
2414 }
|
|
|
2415
|
|
|
2416 /*
|
|
|
2417 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2418 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2419 */
|
|
|
2420
|
|
|
2421 return NGX_OK;
|
|
|
2422 }
|
|
|
2423
|
|
|
2424
|
|
|
2425 static ngx_int_t
|
|
|
2426 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2427 ngx_uint_t offset)
|
|
|
2428 {
|
|
|
2429 u_char *p;
|
|
|
2430 ngx_int_t rc;
|
|
|
2431 ngx_table_elt_t *ho;
|
|
|
2432
|
|
|
2433 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2434 if (ho == NULL) {
|
|
|
2435 return NGX_ERROR;
|
|
|
2436 }
|
|
|
2437
|
|
|
2438 *ho = *h;
|
|
|
2439
|
|
|
2440 if (r->upstream->rewrite_redirect) {
|
|
|
2441
|
|
|
2442 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2443
|
|
|
2444 if (p) {
|
|
|
2445 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2446
|
|
|
2447 } else {
|
|
|
2448 return NGX_OK;
|
|
|
2449 }
|
|
|
2450
|
|
78
|
2451 if (rc == NGX_DECLINED) {
|
|
|
2452 return NGX_OK;
|
|
|
2453 }
|
|
|
2454
|
|
58
|
2455 #if (NGX_DEBUG)
|
|
|
2456 if (rc == NGX_OK) {
|
|
|
2457 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2458 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2459 }
|
|
|
2460 #endif
|
|
|
2461
|
|
|
2462 return rc;
|
|
|
2463 }
|
|
|
2464
|
|
|
2465 return NGX_OK;
|
|
|
2466 }
|
|
|
2467
|
|
|
2468
|
|
|
2469 #if (NGX_HTTP_GZIP)
|
|
|
2470
|
|
|
2471 static ngx_int_t
|
|
|
2472 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2473 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2474 {
|
|
|
2475 ngx_table_elt_t *ho;
|
|
|
2476
|
|
|
2477 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2478 if (ho == NULL) {
|
|
|
2479 return NGX_ERROR;
|
|
|
2480 }
|
|
|
2481
|
|
|
2482 *ho = *h;
|
|
|
2483
|
|
|
2484 r->headers_out.content_encoding = ho;
|
|
|
2485
|
|
|
2486 return NGX_OK;
|
|
|
2487 }
|
|
|
2488
|
|
|
2489 #endif
|
|
|
2490
|
|
|
2491
|
|
36
|
2492 static ngx_int_t
|
|
122
|
2493 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2494 {
|
|
260
|
2495 ngx_http_variable_t *var, *v;
|
|
28
|
2496
|
|
122
|
2497 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2498 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2499 if (var == NULL) {
|
|
|
2500 return NGX_ERROR;
|
|
|
2501 }
|
|
|
2502
|
|
186
|
2503 var->get_handler = v->get_handler;
|
|
122
|
2504 var->data = v->data;
|
|
|
2505 }
|
|
|
2506
|
|
28
|
2507 return NGX_OK;
|
|
|
2508 }
|
|
58
|
2509
|
|
|
2510
|
|
122
|
2511 static ngx_int_t
|
|
|
2512 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2513 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2514 {
|
|
|
2515 u_char *p;
|
|
|
2516 size_t len;
|
|
|
2517 ngx_uint_t i;
|
|
|
2518 ngx_http_upstream_state_t *state;
|
|
|
2519
|
|
|
2520 v->valid = 1;
|
|
|
2521 v->no_cachable = 0;
|
|
|
2522 v->not_found = 0;
|
|
|
2523
|
|
296
|
2524 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2525 v->not_found = 1;
|
|
|
2526 return NGX_OK;
|
|
|
2527 }
|
|
|
2528
|
|
296
|
2529 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2530
|
|
|
2531 p = ngx_palloc(r->pool, len);
|
|
|
2532 if (p == NULL) {
|
|
|
2533 return NGX_ERROR;
|
|
|
2534 }
|
|
|
2535
|
|
|
2536 v->data = p;
|
|
|
2537
|
|
|
2538 i = 0;
|
|
296
|
2539 state = r->upstream_states->elts;
|
|
122
|
2540
|
|
|
2541 for ( ;; ) {
|
|
296
|
2542 if (state[i].status) {
|
|
|
2543 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2544
|
|
|
2545 } else {
|
|
296
|
2546 *p++ = '-';
|
|
122
|
2547 }
|
|
|
2548
|
|
296
|
2549 if (++i == r->upstream_states->nelts) {
|
|
122
|
2550 break;
|
|
|
2551 }
|
|
|
2552
|
|
296
|
2553 if (state[i].peer) {
|
|
|
2554 *p++ = ',';
|
|
|
2555 *p++ = ' ';
|
|
|
2556
|
|
|
2557 } else {
|
|
|
2558 *p++ = ' ';
|
|
|
2559 *p++ = ':';
|
|
|
2560 *p++ = ' ';
|
|
|
2561
|
|
|
2562 if (++i == r->upstream_states->nelts) {
|
|
|
2563 break;
|
|
|
2564 }
|
|
|
2565
|
|
|
2566 continue;
|
|
|
2567 }
|
|
122
|
2568 }
|
|
|
2569
|
|
|
2570 v->len = p - v->data;
|
|
|
2571
|
|
|
2572 return NGX_OK;
|
|
|
2573 }
|
|
|
2574
|
|
|
2575
|
|
|
2576 static ngx_int_t
|
|
|
2577 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2578 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2579 {
|
|
|
2580 u_char *p;
|
|
|
2581 size_t len;
|
|
|
2582 ngx_uint_t i;
|
|
262
|
2583 ngx_msec_int_t ms;
|
|
122
|
2584 ngx_http_upstream_state_t *state;
|
|
|
2585
|
|
|
2586 v->valid = 1;
|
|
|
2587 v->no_cachable = 0;
|
|
|
2588 v->not_found = 0;
|
|
|
2589
|
|
296
|
2590 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2591 v->not_found = 1;
|
|
|
2592 return NGX_OK;
|
|
|
2593 }
|
|
|
2594
|
|
296
|
2595 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
2596
|
|
|
2597 p = ngx_palloc(r->pool, len);
|
|
|
2598 if (p == NULL) {
|
|
|
2599 return NGX_ERROR;
|
|
|
2600 }
|
|
|
2601
|
|
|
2602 v->data = p;
|
|
|
2603
|
|
|
2604 i = 0;
|
|
296
|
2605 state = r->upstream_states->elts;
|
|
122
|
2606
|
|
|
2607 for ( ;; ) {
|
|
296
|
2608 if (state[i].status) {
|
|
262
|
2609 ms = state[i].response_sec * 1000 + state[i].response_msec;
|
|
|
2610 ms = (ms >= 0) ? ms : 0;
|
|
|
2611 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
2612
|
|
|
2613 } else {
|
|
|
2614 *p++ = '-';
|
|
122
|
2615 }
|
|
|
2616
|
|
296
|
2617 if (++i == r->upstream_states->nelts) {
|
|
122
|
2618 break;
|
|
|
2619 }
|
|
|
2620
|
|
296
|
2621 if (state[i].peer) {
|
|
|
2622 *p++ = ',';
|
|
|
2623 *p++ = ' ';
|
|
|
2624
|
|
|
2625 } else {
|
|
|
2626 *p++ = ' ';
|
|
|
2627 *p++ = ':';
|
|
|
2628 *p++ = ' ';
|
|
|
2629
|
|
|
2630 if (++i == r->upstream_states->nelts) {
|
|
|
2631 break;
|
|
|
2632 }
|
|
|
2633
|
|
|
2634 continue;
|
|
|
2635 }
|
|
122
|
2636 }
|
|
|
2637
|
|
|
2638 v->len = p - v->data;
|
|
|
2639
|
|
|
2640 return NGX_OK;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643
|
|
296
|
2644 ngx_int_t
|
|
|
2645 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
2646 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2647 {
|
|
|
2648 if (r->upstream == NULL) {
|
|
|
2649 v->not_found = 1;
|
|
|
2650 return NGX_OK;
|
|
|
2651 }
|
|
|
2652
|
|
|
2653 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
2654 &r->upstream->headers_in.headers.part,
|
|
|
2655 sizeof("upstream_http_") - 1);
|
|
|
2656 }
|
|
|
2657
|
|
|
2658
|
|
200
|
2659 static char *
|
|
|
2660 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2661 {
|
|
260
|
2662 char *rv;
|
|
|
2663 void *mconf;
|
|
|
2664 ngx_str_t *value;
|
|
|
2665 ngx_url_t u;
|
|
|
2666 ngx_uint_t m;
|
|
|
2667 ngx_conf_t pcf;
|
|
|
2668 ngx_http_module_t *module;
|
|
|
2669 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
2670 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2671
|
|
|
2672 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2673
|
|
|
2674 value = cf->args->elts;
|
|
|
2675 u.host = value[1];
|
|
|
2676 u.no_resolve = 1;
|
|
|
2677
|
|
|
2678 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
2679 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
2680 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
2681 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
2682 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
2683 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
2684 if (uscf == NULL) {
|
|
|
2685 return NGX_CONF_ERROR;
|
|
|
2686 }
|
|
|
2687
|
|
200
|
2688
|
|
|
2689 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2690 if (ctx == NULL) {
|
|
|
2691 return NGX_CONF_ERROR;
|
|
|
2692 }
|
|
|
2693
|
|
260
|
2694 http_ctx = cf->ctx;
|
|
|
2695 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
2696
|
|
|
2697 /* the upstream{}'s srv_conf */
|
|
|
2698
|
|
|
2699 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2700 if (ctx->srv_conf == NULL) {
|
|
|
2701 return NGX_CONF_ERROR;
|
|
|
2702 }
|
|
|
2703
|
|
|
2704 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2705
|
|
260
|
2706 uscf->srv_conf = ctx->srv_conf;
|
|
|
2707
|
|
200
|
2708
|
|
|
2709 /* the upstream{}'s loc_conf */
|
|
|
2710
|
|
|
2711 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2712 if (ctx->loc_conf == NULL) {
|
|
|
2713 return NGX_CONF_ERROR;
|
|
|
2714 }
|
|
|
2715
|
|
|
2716 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2717 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2718 continue;
|
|
|
2719 }
|
|
|
2720
|
|
|
2721 module = ngx_modules[m]->ctx;
|
|
|
2722
|
|
260
|
2723 if (module->create_srv_conf) {
|
|
|
2724 mconf = module->create_srv_conf(cf);
|
|
|
2725 if (mconf == NULL) {
|
|
|
2726 return NGX_CONF_ERROR;
|
|
|
2727 }
|
|
|
2728
|
|
|
2729 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2730 }
|
|
|
2731
|
|
200
|
2732 if (module->create_loc_conf) {
|
|
|
2733 mconf = module->create_loc_conf(cf);
|
|
|
2734 if (mconf == NULL) {
|
|
|
2735 return NGX_CONF_ERROR;
|
|
|
2736 }
|
|
|
2737
|
|
|
2738 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2739 }
|
|
|
2740 }
|
|
|
2741
|
|
|
2742
|
|
|
2743 /* parse inside upstream{} */
|
|
|
2744
|
|
|
2745 pcf = *cf;
|
|
|
2746 cf->ctx = ctx;
|
|
|
2747 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2748
|
|
|
2749 rv = ngx_conf_parse(cf, NULL);
|
|
|
2750
|
|
|
2751 *cf = pcf;
|
|
|
2752
|
|
|
2753 if (rv != NGX_CONF_OK) {
|
|
|
2754 return rv;
|
|
|
2755 }
|
|
|
2756
|
|
|
2757 if (uscf->servers == NULL) {
|
|
|
2758 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2759 "no servers are inside upstream");
|
|
|
2760 return NGX_CONF_ERROR;
|
|
|
2761 }
|
|
|
2762
|
|
|
2763 return rv;
|
|
|
2764 }
|
|
|
2765
|
|
|
2766
|
|
|
2767 static char *
|
|
|
2768 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2769 {
|
|
|
2770 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2771
|
|
260
|
2772 time_t fail_timeout;
|
|
|
2773 ngx_str_t *value, s;
|
|
|
2774 ngx_url_t u;
|
|
|
2775 ngx_int_t weight, max_fails;
|
|
|
2776 ngx_uint_t i;
|
|
|
2777 ngx_http_upstream_server_t *us;
|
|
200
|
2778
|
|
|
2779 if (uscf->servers == NULL) {
|
|
260
|
2780 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
2781 sizeof(ngx_http_upstream_server_t));
|
|
200
|
2782 if (uscf->servers == NULL) {
|
|
|
2783 return NGX_CONF_ERROR;
|
|
|
2784 }
|
|
|
2785 }
|
|
|
2786
|
|
260
|
2787 us = ngx_array_push(uscf->servers);
|
|
|
2788 if (us == NULL) {
|
|
200
|
2789 return NGX_CONF_ERROR;
|
|
|
2790 }
|
|
|
2791
|
|
260
|
2792 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
2793
|
|
200
|
2794 value = cf->args->elts;
|
|
|
2795
|
|
|
2796 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2797
|
|
|
2798 u.url = value[1];
|
|
266
|
2799 u.default_port = 80;
|
|
200
|
2800
|
|
|
2801 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2802 if (u.err) {
|
|
|
2803 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2804 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2805 }
|
|
|
2806
|
|
|
2807 return NGX_CONF_ERROR;
|
|
|
2808 }
|
|
|
2809
|
|
212
|
2810 weight = 1;
|
|
260
|
2811 max_fails = 1;
|
|
|
2812 fail_timeout = 10;
|
|
|
2813
|
|
|
2814 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
2815
|
|
|
2816 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
2817
|
|
|
2818 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
2819 goto invalid;
|
|
|
2820 }
|
|
|
2821
|
|
|
2822 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
2823
|
|
|
2824 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2825 goto invalid;
|
|
|
2826 }
|
|
|
2827
|
|
260
|
2828 continue;
|
|
|
2829 }
|
|
|
2830
|
|
|
2831 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
2832
|
|
|
2833 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
2834 goto invalid;
|
|
|
2835 }
|
|
|
2836
|
|
|
2837 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
2838
|
|
|
2839 if (max_fails == NGX_ERROR) {
|
|
|
2840 goto invalid;
|
|
|
2841 }
|
|
|
2842
|
|
|
2843 continue;
|
|
212
|
2844 }
|
|
260
|
2845
|
|
|
2846 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
2847
|
|
|
2848 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
2849 goto invalid;
|
|
|
2850 }
|
|
|
2851
|
|
|
2852 s.len = value[i].len - 13;
|
|
|
2853 s.data = &value[i].data[13];
|
|
|
2854
|
|
|
2855 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
2856
|
|
|
2857 if (fail_timeout < 0) {
|
|
|
2858 goto invalid;
|
|
|
2859 }
|
|
|
2860
|
|
|
2861 continue;
|
|
|
2862 }
|
|
|
2863
|
|
|
2864 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
2865
|
|
|
2866 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
2867 goto invalid;
|
|
|
2868 }
|
|
|
2869
|
|
|
2870 us->down = 1;
|
|
|
2871
|
|
|
2872 continue;
|
|
|
2873 }
|
|
|
2874
|
|
|
2875 goto invalid;
|
|
212
|
2876 }
|
|
|
2877
|
|
260
|
2878 us->addrs = u.addrs;
|
|
|
2879 us->naddrs = u.naddrs;
|
|
|
2880 us->weight = weight;
|
|
|
2881 us->max_fails = max_fails;
|
|
|
2882 us->fail_timeout = fail_timeout;
|
|
200
|
2883
|
|
|
2884 return NGX_CONF_OK;
|
|
212
|
2885
|
|
|
2886 invalid:
|
|
|
2887
|
|
260
|
2888 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2889 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
2890
|
|
|
2891 return NGX_CONF_ERROR;
|
|
200
|
2892 }
|
|
|
2893
|
|
|
2894
|
|
|
2895 ngx_http_upstream_srv_conf_t *
|
|
260
|
2896 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
2897 {
|
|
|
2898 ngx_uint_t i;
|
|
260
|
2899 ngx_http_upstream_server_t *us;
|
|
200
|
2900 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2901 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2902
|
|
260
|
2903 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
2904
|
|
200
|
2905 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2906 if (u->err) {
|
|
|
2907 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2908 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2909 }
|
|
|
2910
|
|
|
2911 return NULL;
|
|
|
2912 }
|
|
|
2913 }
|
|
|
2914
|
|
|
2915 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2916
|
|
|
2917 uscfp = umcf->upstreams.elts;
|
|
|
2918
|
|
|
2919 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
2920
|
|
|
2921 if (uscfp[i]->host.len != u->host.len
|
|
260
|
2922 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2923 != 0)
|
|
|
2924 {
|
|
200
|
2925 continue;
|
|
|
2926 }
|
|
|
2927
|
|
260
|
2928 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
2929 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
2930 {
|
|
260
|
2931 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2932 "duplicate upstream \"%V\"", &u->host);
|
|
|
2933 return NULL;
|
|
200
|
2934 }
|
|
260
|
2935
|
|
266
|
2936 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
2937 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
2938 "upstream \"%V\" may not have port %d",
|
|
|
2939 &u->host, u->port);
|
|
|
2940 return NULL;
|
|
|
2941 }
|
|
|
2942
|
|
|
2943 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
2944 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
2945 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
2946 &u->host, uscfp[i]->port,
|
|
|
2947 uscfp[i]->file_name.data, uscfp[i]->line);
|
|
|
2948 return NULL;
|
|
|
2949 }
|
|
|
2950
|
|
|
2951 if (uscfp[i]->port != u->port) {
|
|
|
2952 continue;
|
|
260
|
2953 }
|
|
|
2954
|
|
|
2955 return uscfp[i];
|
|
200
|
2956 }
|
|
|
2957
|
|
|
2958 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2959 if (uscf == NULL) {
|
|
|
2960 return NULL;
|
|
|
2961 }
|
|
|
2962
|
|
260
|
2963 uscf->flags = flags;
|
|
200
|
2964 uscf->host = u->host;
|
|
|
2965 uscf->file_name = cf->conf_file->file.name;
|
|
|
2966 uscf->line = cf->conf_file->line;
|
|
266
|
2967 uscf->port = u->port;
|
|
|
2968 uscf->default_port = u->default_port;
|
|
260
|
2969
|
|
|
2970 if (u->naddrs == 1) {
|
|
|
2971 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
2972 sizeof(ngx_http_upstream_server_t));
|
|
|
2973 if (uscf->servers == NULL) {
|
|
|
2974 return NGX_CONF_ERROR;
|
|
|
2975 }
|
|
|
2976
|
|
|
2977 us = ngx_array_push(uscf->servers);
|
|
|
2978 if (us == NULL) {
|
|
|
2979 return NGX_CONF_ERROR;
|
|
|
2980 }
|
|
|
2981
|
|
|
2982 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
2983
|
|
|
2984 us->addrs = u->addrs;
|
|
|
2985 us->naddrs = u->naddrs;
|
|
|
2986 }
|
|
200
|
2987
|
|
|
2988 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2989 if (uscfp == NULL) {
|
|
|
2990 return NULL;
|
|
|
2991 }
|
|
|
2992
|
|
|
2993 *uscfp = uscf;
|
|
|
2994
|
|
|
2995 return uscf;
|
|
|
2996 }
|
|
|
2997
|
|
|
2998
|
|
58
|
2999 static void *
|
|
|
3000 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3001 {
|
|
|
3002 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3003
|
|
|
3004 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3005 if (umcf == NULL) {
|
|
|
3006 return NULL;
|
|
|
3007 }
|
|
|
3008
|
|
200
|
3009 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3010 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3011 != NGX_OK)
|
|
|
3012 {
|
|
|
3013 return NGX_CONF_ERROR;
|
|
|
3014 }
|
|
|
3015
|
|
58
|
3016 return umcf;
|
|
|
3017 }
|
|
|
3018
|
|
|
3019
|
|
|
3020 static char *
|
|
200
|
3021 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3022 {
|
|
|
3023 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3024
|
|
200
|
3025 ngx_uint_t i;
|
|
|
3026 ngx_array_t headers_in;
|
|
|
3027 ngx_hash_key_t *hk;
|
|
|
3028 ngx_hash_init_t hash;
|
|
260
|
3029 ngx_http_upstream_init_pt init;
|
|
200
|
3030 ngx_http_upstream_header_t *header;
|
|
|
3031 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3032
|
|
|
3033 uscfp = umcf->upstreams.elts;
|
|
|
3034
|
|
|
3035 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3036
|
|
|
3037 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3038 ngx_http_upstream_init_round_robin;
|
|
|
3039
|
|
|
3040 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3041 return NGX_CONF_ERROR;
|
|
|
3042 }
|
|
|
3043 }
|
|
198
|
3044
|
|
212
|
3045
|
|
260
|
3046 /* upstream_headers_in_hash */
|
|
|
3047
|
|
198
|
3048 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3049 != NGX_OK)
|
|
58
|
3050 {
|
|
|
3051 return NGX_CONF_ERROR;
|
|
|
3052 }
|
|
|
3053
|
|
198
|
3054 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3055 hk = ngx_array_push(&headers_in);
|
|
|
3056 if (hk == NULL) {
|
|
|
3057 return NGX_CONF_ERROR;
|
|
|
3058 }
|
|
|
3059
|
|
|
3060 hk->key = header->name;
|
|
|
3061 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3062 hk->value = header;
|
|
|
3063 }
|
|
|
3064
|
|
|
3065 hash.hash = &umcf->headers_in_hash;
|
|
|
3066 hash.key = ngx_hash_key_lc;
|
|
|
3067 hash.max_size = 512;
|
|
244
|
3068 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3069 hash.name = "upstream_headers_in_hash";
|
|
|
3070 hash.pool = cf->pool;
|
|
|
3071 hash.temp_pool = NULL;
|
|
|
3072
|
|
|
3073 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3074 return NGX_CONF_ERROR;
|
|
|
3075 }
|
|
58
|
3076
|
|
|
3077 return NGX_CONF_OK;
|
|
|
3078 }
|
