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