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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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248
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24 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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26 ngx_http_upstream_t *u);
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130
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27 static void
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28 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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29 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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31 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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32 ssize_t bytes);
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58
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33 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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34 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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35 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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36 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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37 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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38 static void ngx_http_upstream_cleanup(void *data);
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28
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39 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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40 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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41
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58
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42 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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43 ngx_table_elt_t *h, ngx_uint_t offset);
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44 static ngx_int_t
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45 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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48 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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49 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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50 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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51 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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53 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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55 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t
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58 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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59 ngx_table_elt_t *h, ngx_uint_t offset);
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60 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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61 ngx_table_elt_t *h, ngx_uint_t offset);
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62 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 #if (NGX_HTTP_GZIP)
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69 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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70 ngx_table_elt_t *h, ngx_uint_t offset);
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71 #endif
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72
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122
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73 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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74 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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75 ngx_http_variable_value_t *v, uintptr_t data);
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76 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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77 ngx_http_variable_value_t *v, uintptr_t data);
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78
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200
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79 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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80 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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81 void *conf);
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82
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58
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83 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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84 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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85
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126
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86 #if (NGX_HTTP_SSL)
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140
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87 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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88 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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89 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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90 #endif
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91
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58
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92
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93 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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94
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95 { ngx_string("Status"),
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96 ngx_http_upstream_process_header_line,
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97 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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98 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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99
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100 { ngx_string("Content-Type"),
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101 ngx_http_upstream_process_header_line,
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102 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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103 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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104
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105 { ngx_string("Content-Length"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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108 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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109
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110 { ngx_string("Date"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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113 ngx_http_upstream_copy_header_line,
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114 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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115
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116 { ngx_string("Server"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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119 ngx_http_upstream_copy_header_line,
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120 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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121
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78
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122 { ngx_string("WWW-Authenticate"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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125 ngx_http_upstream_copy_header_line, 0, 0 },
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126
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58
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127 { ngx_string("Location"),
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128 ngx_http_upstream_ignore_header_line, 0,
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64
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129 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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130
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131 { ngx_string("Refresh"),
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132 ngx_http_upstream_ignore_header_line, 0,
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64
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133 ngx_http_upstream_rewrite_refresh, 0, 0 },
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134
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135 { ngx_string("Set-Cookie"),
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136 ngx_http_upstream_ignore_header_line, 0,
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80
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137 ngx_http_upstream_copy_header_line, 0, 1 },
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138
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139 { ngx_string("Content-Disposition"),
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140 ngx_http_upstream_ignore_header_line, 0,
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141 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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142
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143 { ngx_string("Cache-Control"),
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144 ngx_http_upstream_process_multi_header_lines,
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145 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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146 ngx_http_upstream_copy_multi_header_lines,
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64
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147 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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148
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122
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149 { ngx_string("Expires"),
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150 ngx_http_upstream_process_header_line,
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151 offsetof(ngx_http_upstream_headers_in_t, expires),
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152 ngx_http_upstream_copy_header_line,
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153 offsetof(ngx_http_headers_out_t, expires), 1 },
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154
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126
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155 { ngx_string("Accept-Ranges"),
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156 ngx_http_upstream_process_header_line,
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157 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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158 ngx_http_upstream_copy_header_line,
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159 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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160
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58
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161 { ngx_string("Connection"),
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162 ngx_http_upstream_ignore_header_line, 0,
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64
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163 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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164
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190
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165 { ngx_string("Keep-Alive"),
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166 ngx_http_upstream_ignore_header_line, 0,
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167 ngx_http_upstream_ignore_header_line, 0, 0 },
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168
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58
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169 { ngx_string("X-Powered-By"),
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170 ngx_http_upstream_ignore_header_line, 0,
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198
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171 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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172
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173 { ngx_string("X-Accel-Expires"),
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174 ngx_http_upstream_process_header_line,
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175 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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176 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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177
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178 { ngx_string("X-Accel-Redirect"),
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179 ngx_http_upstream_process_header_line,
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180 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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181 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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182
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76
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183 { ngx_string("X-Accel-Limit-Rate"),
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184 ngx_http_upstream_process_limit_rate, 0,
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185 ngx_http_upstream_ignore_header_line, 0, 0 },
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186
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198
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187 { ngx_string("X-Accel-Buffering"),
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188 ngx_http_upstream_process_buffering, 0,
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189 ngx_http_upstream_ignore_header_line, 0, 0 },
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190
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206
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191 { ngx_string("X-Accel-Charset"),
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192 ngx_http_upstream_process_charset, 0,
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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194
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58
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195 #if (NGX_HTTP_GZIP)
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196 { ngx_string("Content-Encoding"),
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197 ngx_http_upstream_process_header_line,
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198 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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199 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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200 #endif
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201
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64
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202 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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203 };
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28
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204
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205
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200
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206 static ngx_command_t ngx_http_upstream_commands[] = {
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207
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208 { ngx_string("upstream"),
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209 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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210 ngx_http_upstream,
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211 0,
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212 0,
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213 NULL },
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214
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215 { ngx_string("server"),
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260
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216 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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217 ngx_http_upstream_server,
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218 NGX_HTTP_SRV_CONF_OFFSET,
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219 0,
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220 NULL },
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221
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222 ngx_null_command
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223 };
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224
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225
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226 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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227 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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228 NULL, /* postconfiguration */
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229
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230 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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231 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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232
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233 NULL, /* create server configuration */
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234 NULL, /* merge server configuration */
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235
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236 NULL, /* create location configuration */
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237 NULL /* merge location configuration */
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238 };
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126
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239
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28
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240
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241 ngx_module_t ngx_http_upstream_module = {
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58
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242 NGX_MODULE_V1,
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28
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243 &ngx_http_upstream_module_ctx, /* module context */
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200
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244 ngx_http_upstream_commands, /* module directives */
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28
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245 NGX_HTTP_MODULE, /* module type */
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90
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246 NULL, /* init master */
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28
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247 NULL, /* init module */
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90
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248 NULL, /* init process */
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249 NULL, /* init thread */
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250 NULL, /* exit thread */
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251 NULL, /* exit process */
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252 NULL, /* exit master */
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253 NGX_MODULE_V1_PADDING
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28
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254 };
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255
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256
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122
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257 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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258
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186
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259 { ngx_string("upstream_status"), NULL,
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132
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260 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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261
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186
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262 { ngx_string("upstream_response_time"), NULL,
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132
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263 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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264
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186
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265 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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266 };
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267
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268
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36
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269 void
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270 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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271 {
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58
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272 ngx_connection_t *c;
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118
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273 ngx_http_cleanup_t *cln;
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58
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274 ngx_http_upstream_t *u;
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275 ngx_http_core_loc_conf_t *clcf;
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28
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276
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277 c = r->connection;
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278
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279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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280 "http init upstream, client timer: %d", c->read->timer_set);
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281
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282 if (c->read->timer_set) {
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283 ngx_del_timer(c->read);
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284 }
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285
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178
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286 u = r->upstream;
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287
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288 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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289 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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290 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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291 }
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126
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292
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28
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293 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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294
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295 if (!c->write->active) {
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80
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296 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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297 == NGX_ERROR)
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28
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298 {
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299 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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300 return;
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301 }
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302 }
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303 }
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304
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86
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305 if (r->request_body) {
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306 u->request_bufs = r->request_body->bufs;
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307 }
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58
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308
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260
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309 if (u->conf->upstream->peer.init(r, u->conf->upstream) != NGX_OK) {
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310 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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311 return;
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312 }
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313
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86
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314 if (u->create_request(r) != NGX_OK) {
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28
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315 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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316 return;
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317 }
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318
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58
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319 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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320
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321 u->output.sendfile = r->connection->sendfile;
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|
322 u->output.pool = r->pool;
|
|
|
323 u->output.bufs.num = 1;
|
|
58
|
324 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
325 u->output.output_filter = ngx_chain_writer;
|
|
|
326 u->output.filter_ctx = &u->writer;
|
|
|
327
|
|
|
328 u->writer.pool = r->pool;
|
|
|
329
|
|
260
|
330 if (ngx_array_init(&u->states, r->pool, 1,
|
|
118
|
331 sizeof(ngx_http_upstream_state_t))
|
|
|
332 != NGX_OK)
|
|
28
|
333 {
|
|
|
334 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
335 return;
|
|
|
336 }
|
|
|
337
|
|
142
|
338 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
339 if (cln == NULL) {
|
|
|
340 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
341 return;
|
|
|
342 }
|
|
|
343
|
|
|
344 cln->handler = ngx_http_upstream_cleanup;
|
|
|
345 cln->data = r;
|
|
|
346 u->cleanup = &cln->handler;
|
|
|
347
|
|
28
|
348 ngx_http_upstream_connect(r, u);
|
|
|
349 }
|
|
|
350
|
|
|
351
|
|
36
|
352 static void
|
|
58
|
353 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
354 {
|
|
|
355 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
356 }
|
|
|
357
|
|
|
358
|
|
|
359 static void
|
|
|
360 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
361 {
|
|
|
362 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
363 }
|
|
|
364
|
|
|
365
|
|
|
366 static void
|
|
|
367 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
368 ngx_event_t *ev)
|
|
28
|
369 {
|
|
|
370 int n;
|
|
|
371 char buf[1];
|
|
126
|
372 ngx_err_t err;
|
|
28
|
373 ngx_connection_t *c;
|
|
|
374 ngx_http_upstream_t *u;
|
|
|
375
|
|
76
|
376 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
377 "http upstream check client, write event:%d, \"%V\"",
|
|
|
378 ev->write, &r->uri);
|
|
28
|
379
|
|
58
|
380 c = r->connection;
|
|
32
|
381 u = r->upstream;
|
|
|
382
|
|
132
|
383 if (c->error) {
|
|
76
|
384 ngx_http_upstream_finalize_request(r, u,
|
|
|
385 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
386 return;
|
|
|
387 }
|
|
|
388
|
|
32
|
389 if (u->peer.connection == NULL) {
|
|
|
390 return;
|
|
|
391 }
|
|
|
392
|
|
28
|
393 #if (NGX_HAVE_KQUEUE)
|
|
|
394
|
|
|
395 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
396
|
|
|
397 if (!ev->pending_eof) {
|
|
|
398 return;
|
|
|
399 }
|
|
|
400
|
|
|
401 ev->eof = 1;
|
|
132
|
402 c->error = 1;
|
|
28
|
403
|
|
|
404 if (ev->kq_errno) {
|
|
|
405 ev->error = 1;
|
|
|
406 }
|
|
|
407
|
|
|
408 if (!u->cachable && u->peer.connection) {
|
|
|
409 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
410 "kevent() reported that client closed prematurely "
|
|
|
411 "connection, so upstream connection is closed too");
|
|
28
|
412 ngx_http_upstream_finalize_request(r, u,
|
|
|
413 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
414 return;
|
|
|
415 }
|
|
|
416
|
|
|
417 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
418 "kevent() reported that client closed "
|
|
|
419 "prematurely connection");
|
|
|
420
|
|
|
421 if (u->peer.connection == NULL) {
|
|
|
422 ngx_http_upstream_finalize_request(r, u,
|
|
|
423 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
424 return;
|
|
|
425 }
|
|
|
426
|
|
|
427 return;
|
|
|
428 }
|
|
|
429
|
|
|
430 #endif
|
|
|
431
|
|
|
432 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
433
|
|
|
434 err = ngx_socket_errno;
|
|
|
435
|
|
286
|
436 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
437 "http upstream recv(): %d", n);
|
|
|
438
|
|
28
|
439 /*
|
|
|
440 * we do not need to disable the write event because
|
|
|
441 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
442 */
|
|
|
443
|
|
|
444 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
445 return;
|
|
|
446 }
|
|
|
447
|
|
|
448 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
449 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
450 ngx_http_upstream_finalize_request(r, u,
|
|
|
451 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
452 return;
|
|
|
453 }
|
|
|
454 }
|
|
|
455
|
|
|
456 if (n > 0) {
|
|
|
457 return;
|
|
|
458 }
|
|
|
459
|
|
|
460 if (n == -1) {
|
|
|
461 if (err == NGX_EAGAIN) {
|
|
|
462 return;
|
|
|
463 }
|
|
|
464
|
|
|
465 ev->error = 1;
|
|
|
466
|
|
32
|
467 } else { /* n == 0 */
|
|
28
|
468 err = 0;
|
|
|
469 }
|
|
|
470
|
|
78
|
471 ev->eof = 1;
|
|
132
|
472 c->error = 1;
|
|
78
|
473
|
|
28
|
474 if (!u->cachable && u->peer.connection) {
|
|
|
475 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
476 "client closed prematurely connection, "
|
|
|
477 "so upstream connection is closed too");
|
|
|
478 ngx_http_upstream_finalize_request(r, u,
|
|
|
479 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
480 return;
|
|
|
481 }
|
|
|
482
|
|
|
483 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
484 "client closed prematurely connection");
|
|
|
485
|
|
|
486 if (u->peer.connection == NULL) {
|
|
|
487 ngx_http_upstream_finalize_request(r, u,
|
|
|
488 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
489 return;
|
|
|
490 }
|
|
|
491 }
|
|
|
492
|
|
|
493
|
|
36
|
494 static void
|
|
|
495 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
496 {
|
|
140
|
497 ngx_int_t rc;
|
|
214
|
498 ngx_time_t *tp;
|
|
140
|
499 ngx_connection_t *c;
|
|
28
|
500
|
|
32
|
501 r->connection->log->action = "connecting to upstream";
|
|
28
|
502
|
|
|
503 r->connection->single_connection = 0;
|
|
|
504
|
|
262
|
505 if (u->state && u->state->response_sec) {
|
|
214
|
506 tp = ngx_timeofday();
|
|
262
|
507 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
508 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
509 }
|
|
|
510
|
|
|
511 u->state = ngx_array_push(&u->states);
|
|
|
512 if (u->state == NULL) {
|
|
|
513 ngx_http_upstream_finalize_request(r, u,
|
|
|
514 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
515 return;
|
|
|
516 }
|
|
|
517
|
|
|
518 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
519
|
|
|
520 tp = ngx_timeofday();
|
|
262
|
521 u->state->response_sec = tp->sec;
|
|
|
522 u->state->response_msec = tp->msec;
|
|
214
|
523
|
|
28
|
524 rc = ngx_event_connect_peer(&u->peer);
|
|
|
525
|
|
|
526 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
527 "http upstream connect: %i", rc);
|
|
|
528
|
|
|
529 if (rc == NGX_ERROR) {
|
|
|
530 ngx_http_upstream_finalize_request(r, u,
|
|
|
531 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
532 return;
|
|
|
533 }
|
|
|
534
|
|
260
|
535 u->state->peer = u->peer.name;
|
|
28
|
536
|
|
92
|
537 if (rc == NGX_BUSY) {
|
|
|
538 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
539 }
|
|
|
540
|
|
|
541 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
542 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
543 return;
|
|
|
544 }
|
|
|
545
|
|
126
|
546 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
547
|
|
28
|
548 c = u->peer.connection;
|
|
|
549
|
|
|
550 c->data = r;
|
|
140
|
551
|
|
58
|
552 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
553 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
554
|
|
|
555 c->sendfile = r->connection->sendfile;
|
|
|
556
|
|
|
557 c->pool = r->pool;
|
|
|
558 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
559
|
|
|
560 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
561
|
|
|
562 u->writer.out = NULL;
|
|
|
563 u->writer.last = &u->writer.out;
|
|
|
564 u->writer.connection = c;
|
|
|
565 u->writer.limit = 0;
|
|
|
566
|
|
|
567 if (u->request_sent) {
|
|
58
|
568 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
569 ngx_http_upstream_finalize_request(r, u,
|
|
|
570 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
571 return;
|
|
|
572 }
|
|
28
|
573 }
|
|
|
574
|
|
276
|
575 if (r->request_body
|
|
|
576 && r->request_body->buf
|
|
|
577 && r->request_body->temp_file
|
|
|
578 && r == r->main)
|
|
|
579 {
|
|
122
|
580 /*
|
|
|
581 * the r->request_body->buf can be reused for one request only,
|
|
|
582 * the subrequests should allocate their own temporay bufs
|
|
|
583 */
|
|
|
584
|
|
|
585 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
586 if (u->output.free == NULL) {
|
|
|
587 ngx_http_upstream_finalize_request(r, u,
|
|
|
588 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
589 return;
|
|
28
|
590 }
|
|
122
|
591
|
|
|
592 u->output.free->buf = r->request_body->buf;
|
|
|
593 u->output.free->next = NULL;
|
|
|
594 u->output.allocated = 1;
|
|
|
595
|
|
|
596 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
597 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
598 r->request_body->buf->tag = u->output.tag;
|
|
28
|
599 }
|
|
|
600
|
|
|
601 u->request_sent = 0;
|
|
|
602
|
|
|
603 if (rc == NGX_AGAIN) {
|
|
|
604 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
605 return;
|
|
|
606 }
|
|
|
607
|
|
126
|
608 #if (NGX_HTTP_SSL)
|
|
|
609
|
|
140
|
610 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
611 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
612 return;
|
|
|
613 }
|
|
|
614
|
|
|
615 #endif
|
|
|
616
|
|
28
|
617 ngx_http_upstream_send_request(r, u);
|
|
|
618 }
|
|
|
619
|
|
|
620
|
|
126
|
621 #if (NGX_HTTP_SSL)
|
|
|
622
|
|
|
623 static void
|
|
140
|
624 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
625 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
626 {
|
|
260
|
627 ngx_int_t rc;
|
|
140
|
628
|
|
|
629 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
630 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
631 == NGX_ERROR)
|
|
|
632 {
|
|
|
633 ngx_http_upstream_finalize_request(r, u,
|
|
|
634 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
635 return;
|
|
|
636 }
|
|
|
637
|
|
|
638 c->sendfile = 0;
|
|
168
|
639 u->output.sendfile = 0;
|
|
140
|
640
|
|
260
|
641 if (ngx_ssl_set_session(c, u->peer.ssl_session) != NGX_OK) {
|
|
140
|
642 ngx_http_upstream_finalize_request(r, u,
|
|
|
643 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
644 return;
|
|
|
645 }
|
|
|
646
|
|
190
|
647 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
648
|
|
140
|
649 rc = ngx_ssl_handshake(c);
|
|
|
650
|
|
|
651 if (rc == NGX_AGAIN) {
|
|
|
652 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
653 return;
|
|
|
654 }
|
|
|
655
|
|
|
656 ngx_http_upstream_ssl_handshake(c);
|
|
|
657 }
|
|
|
658
|
|
|
659
|
|
|
660 static void
|
|
126
|
661 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
662 {
|
|
|
663 ngx_http_request_t *r;
|
|
|
664 ngx_http_upstream_t *u;
|
|
|
665
|
|
|
666 r = c->data;
|
|
|
667 u = r->upstream;
|
|
|
668
|
|
|
669 if (c->ssl->handshaked) {
|
|
|
670
|
|
260
|
671 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
672
|
|
126
|
673 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
674 c->read->handler = ngx_http_upstream_process_header;
|
|
|
675
|
|
|
676 ngx_http_upstream_send_request(r, u);
|
|
|
677
|
|
|
678 return;
|
|
|
679 }
|
|
|
680
|
|
|
681 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
682
|
|
|
683 }
|
|
|
684
|
|
|
685 #endif
|
|
|
686
|
|
|
687
|
|
58
|
688 static ngx_int_t
|
|
36
|
689 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
690 {
|
|
|
691 ngx_chain_t *cl;
|
|
|
692
|
|
58
|
693 if (u->reinit_request(r) != NGX_OK) {
|
|
|
694 return NGX_ERROR;
|
|
|
695 }
|
|
|
696
|
|
|
697 ngx_memzero(&r->upstream->headers_in,
|
|
|
698 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
699
|
|
|
700 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
701 sizeof(ngx_table_elt_t))
|
|
|
702 != NGX_OK)
|
|
58
|
703 {
|
|
|
704 return NGX_ERROR;
|
|
28
|
705 }
|
|
|
706
|
|
|
707 /* reinit the request chain */
|
|
126
|
708
|
|
58
|
709 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
710 cl->buf->pos = cl->buf->start;
|
|
|
711 cl->buf->file_pos = 0;
|
|
|
712 }
|
|
|
713
|
|
58
|
714 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
715
|
|
122
|
716 if (r->request_body && r->request_body->temp_file
|
|
146
|
717 && r != r->main && u->output.buf)
|
|
122
|
718 {
|
|
|
719 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
720 if (u->output.free == NULL) {
|
|
|
721 return NGX_ERROR;
|
|
58
|
722 }
|
|
122
|
723
|
|
|
724 u->output.free->buf = u->output.buf;
|
|
|
725 u->output.free->next = NULL;
|
|
|
726
|
|
|
727 u->output.buf->pos = u->output.buf->start;
|
|
|
728 u->output.buf->last = u->output.buf->start;
|
|
58
|
729 }
|
|
28
|
730
|
|
|
731 u->output.buf = NULL;
|
|
|
732 u->output.in = NULL;
|
|
|
733 u->output.busy = NULL;
|
|
126
|
734
|
|
130
|
735 /* reinit u->buffer */
|
|
126
|
736
|
|
28
|
737 #if 0
|
|
|
738 if (u->cache) {
|
|
130
|
739 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
740 u->buffer.last = u->buffer.pos;
|
|
28
|
741
|
|
|
742 } else {
|
|
130
|
743 u->buffer.pos = u->buffer.start;
|
|
|
744 u->buffer.last = u->buffer.start;
|
|
28
|
745 }
|
|
|
746 #else
|
|
58
|
747
|
|
130
|
748 u->buffer.pos = u->buffer.start;
|
|
|
749 u->buffer.last = u->buffer.start;
|
|
58
|
750
|
|
28
|
751 #endif
|
|
|
752
|
|
58
|
753 return NGX_OK;
|
|
28
|
754 }
|
|
|
755
|
|
|
756
|
|
36
|
757 static void
|
|
|
758 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
759 {
|
|
220
|
760 int rc, err;
|
|
|
761 socklen_t len;
|
|
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
|
|
220
|
769 if (!u->request_sent) {
|
|
|
770
|
|
28
|
771 #if (NGX_HAVE_KQUEUE)
|
|
|
772
|
|
220
|
773 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
774 if (c->write->pending_eof) {
|
|
|
775 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
86
|
776 "kevent() reported that connect() failed");
|
|
220
|
777 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
778 return;
|
|
|
779 }
|
|
|
780
|
|
|
781 } else
|
|
|
782 #endif
|
|
|
783 {
|
|
|
784 err = 0;
|
|
|
785 len = sizeof(int);
|
|
|
786
|
|
|
787 /*
|
|
|
788 * BSDs and Linux return 0 and set a pending error in err
|
|
|
789 * Solaris returns -1 and sets errno
|
|
|
790 */
|
|
|
791
|
|
|
792 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
793 == -1)
|
|
|
794 {
|
|
|
795 err = ngx_errno;
|
|
|
796 }
|
|
|
797
|
|
|
798 if (err) {
|
|
|
799 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
800 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
801 return;
|
|
|
802 }
|
|
|
803 }
|
|
28
|
804 }
|
|
|
805
|
|
32
|
806 c->log->action = "sending request to upstream";
|
|
28
|
807
|
|
58
|
808 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
809
|
|
|
810 u->request_sent = 1;
|
|
|
811
|
|
|
812 if (rc == NGX_ERROR) {
|
|
|
813 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
814 return;
|
|
|
815 }
|
|
|
816
|
|
|
817 if (c->write->timer_set) {
|
|
|
818 ngx_del_timer(c->write);
|
|
|
819 }
|
|
|
820
|
|
|
821 if (rc == NGX_AGAIN) {
|
|
|
822 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
823
|
|
|
824 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
825 {
|
|
|
826 ngx_http_upstream_finalize_request(r, u,
|
|
|
827 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
828 return;
|
|
|
829 }
|
|
|
830
|
|
|
831 return;
|
|
|
832 }
|
|
|
833
|
|
|
834 /* rc == NGX_OK */
|
|
|
835
|
|
|
836 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
837 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
838 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
839 ngx_tcp_push_n " failed");
|
|
|
840 ngx_http_upstream_finalize_request(r, u,
|
|
|
841 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
842 return;
|
|
28
|
843 }
|
|
|
844
|
|
|
845 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
846 }
|
|
126
|
847
|
|
28
|
848 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
849
|
|
|
850 #if 1
|
|
|
851 if (c->read->ready) {
|
|
126
|
852
|
|
28
|
853 /* post aio operation */
|
|
|
854
|
|
|
855 /*
|
|
|
856 * TODO comment
|
|
|
857 * although we can post aio operation just in the end
|
|
|
858 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
859 * it's better to do here because we postpone header buffer allocation
|
|
|
860 */
|
|
|
861
|
|
|
862 ngx_http_upstream_process_header(c->read);
|
|
|
863 return;
|
|
|
864 }
|
|
|
865 #endif
|
|
|
866
|
|
58
|
867 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
868
|
|
58
|
869 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
870 ngx_http_upstream_finalize_request(r, u,
|
|
|
871 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
872 return;
|
|
|
873 }
|
|
|
874 }
|
|
|
875
|
|
|
876
|
|
36
|
877 static void
|
|
|
878 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
879 {
|
|
|
880 ngx_connection_t *c;
|
|
|
881 ngx_http_request_t *r;
|
|
|
882 ngx_http_upstream_t *u;
|
|
|
883
|
|
|
884 c = wev->data;
|
|
|
885 r = c->data;
|
|
|
886 u = r->upstream;
|
|
|
887
|
|
|
888 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
889 "http upstream send request handler");
|
|
|
890
|
|
|
891 if (wev->timedout) {
|
|
|
892 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
893 return;
|
|
|
894 }
|
|
|
895
|
|
140
|
896 #if (NGX_HTTP_SSL)
|
|
|
897
|
|
|
898 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
899 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
900 return;
|
|
|
901 }
|
|
|
902
|
|
|
903 #endif
|
|
|
904
|
|
200
|
905 if (u->header_sent) {
|
|
|
906 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
907
|
|
|
908 (void) ngx_handle_write_event(wev, 0);
|
|
|
909
|
|
|
910 return;
|
|
|
911 }
|
|
|
912
|
|
28
|
913 ngx_http_upstream_send_request(r, u);
|
|
|
914 }
|
|
|
915
|
|
|
916
|
|
36
|
917 static void
|
|
|
918 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
919 {
|
|
64
|
920 ssize_t n;
|
|
|
921 ngx_int_t rc;
|
|
122
|
922 ngx_str_t *uri, args;
|
|
198
|
923 ngx_uint_t i, flags;
|
|
64
|
924 ngx_list_part_t *part;
|
|
|
925 ngx_table_elt_t *h;
|
|
|
926 ngx_connection_t *c;
|
|
|
927 ngx_http_request_t *r;
|
|
|
928 ngx_http_upstream_t *u;
|
|
|
929 ngx_http_err_page_t *err_page;
|
|
|
930 ngx_http_core_loc_conf_t *clcf;
|
|
|
931 ngx_http_upstream_header_t *hh;
|
|
|
932 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
933
|
|
|
934 c = rev->data;
|
|
|
935 r = c->data;
|
|
|
936 u = r->upstream;
|
|
|
937
|
|
|
938 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
939 "http upstream process header");
|
|
28
|
940
|
|
32
|
941 c->log->action = "reading response header from upstream";
|
|
28
|
942
|
|
|
943 if (rev->timedout) {
|
|
|
944 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
945 return;
|
|
|
946 }
|
|
126
|
947
|
|
130
|
948 if (u->buffer.start == NULL) {
|
|
|
949 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
950 if (u->buffer.start == NULL) {
|
|
28
|
951 ngx_http_upstream_finalize_request(r, u,
|
|
|
952 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
953 return;
|
|
|
954 }
|
|
|
955
|
|
130
|
956 u->buffer.pos = u->buffer.start;
|
|
|
957 u->buffer.last = u->buffer.start;
|
|
|
958 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
959 u->buffer.temporary = 1;
|
|
|
960
|
|
|
961 u->buffer.tag = u->output.tag;
|
|
28
|
962
|
|
58
|
963 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
964 sizeof(ngx_table_elt_t))
|
|
|
965 != NGX_OK)
|
|
58
|
966 {
|
|
|
967 ngx_http_upstream_finalize_request(r, u,
|
|
|
968 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
969 return;
|
|
|
970 }
|
|
|
971
|
|
28
|
972 #if 0
|
|
|
973 if (u->cache) {
|
|
130
|
974 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
975 u->buffer.last = u->buffer.pos;
|
|
28
|
976 }
|
|
|
977 #endif
|
|
|
978 }
|
|
|
979
|
|
130
|
980 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
260
|
981 u->buffer.end - u->buffer.last);
|
|
28
|
982
|
|
|
983 if (n == NGX_AGAIN) {
|
|
|
984 #if 0
|
|
|
985 ngx_add_timer(rev, u->read_timeout);
|
|
|
986 #endif
|
|
|
987
|
|
|
988 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
989 ngx_http_upstream_finalize_request(r, u,
|
|
|
990 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
991 return;
|
|
|
992 }
|
|
|
993
|
|
|
994 return;
|
|
|
995 }
|
|
|
996
|
|
|
997 if (n == 0) {
|
|
|
998 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
999 "upstream prematurely closed connection");
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 if (n == NGX_ERROR || n == 0) {
|
|
|
1003 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1004 return;
|
|
|
1005 }
|
|
|
1006
|
|
130
|
1007 u->buffer.last += n;
|
|
28
|
1008
|
|
|
1009 #if 0
|
|
|
1010 u->valid_header_in = 0;
|
|
|
1011
|
|
|
1012 u->peer.cached = 0;
|
|
|
1013 #endif
|
|
|
1014
|
|
|
1015 rc = u->process_header(r);
|
|
|
1016
|
|
|
1017 if (rc == NGX_AGAIN) {
|
|
|
1018 #if 0
|
|
|
1019 ngx_add_timer(rev, u->read_timeout);
|
|
|
1020 #endif
|
|
|
1021
|
|
130
|
1022 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1023 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1024 "upstream sent too big header");
|
|
|
1025
|
|
|
1026 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1027 return;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1031 ngx_http_upstream_finalize_request(r, u,
|
|
|
1032 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1033 return;
|
|
|
1034 }
|
|
|
1035
|
|
|
1036 return;
|
|
|
1037 }
|
|
|
1038
|
|
|
1039 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1040 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1041 return;
|
|
|
1042 }
|
|
|
1043
|
|
|
1044 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1045 ngx_http_upstream_finalize_request(r, u,
|
|
|
1046 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1047 return;
|
|
|
1048 }
|
|
|
1049
|
|
|
1050 /* rc == NGX_OK */
|
|
|
1051
|
|
248
|
1052 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1053 && r->subrequest_in_memory)
|
|
|
1054 {
|
|
|
1055 u->buffer.last = u->buffer.pos;
|
|
|
1056 }
|
|
|
1057
|
|
78
|
1058 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1059
|
|
|
1060 if (u->peer.tries > 1
|
|
|
1061 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1062 {
|
|
|
1063 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1064 return;
|
|
|
1065 }
|
|
|
1066
|
|
|
1067 #if (NGX_HTTP_CACHE)
|
|
|
1068
|
|
|
1069 if (u->peer.tries == 0
|
|
|
1070 && u->stale
|
|
|
1071 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1072 {
|
|
|
1073 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1074 ngx_http_send_cached_response(r));
|
|
58
|
1075 return;
|
|
|
1076 }
|
|
|
1077
|
|
|
1078 #endif
|
|
|
1079 }
|
|
|
1080
|
|
146
|
1081 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1082
|
|
|
1083 if (u->peer.tries > 1
|
|
|
1084 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1085 {
|
|
|
1086 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1087 return;
|
|
|
1088 }
|
|
|
1089
|
|
224
|
1090 if (u->conf->intercept_404) {
|
|
|
1091 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1092 return;
|
|
|
1093 }
|
|
58
|
1094 }
|
|
|
1095
|
|
|
1096
|
|
78
|
1097 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1098 && u->conf->intercept_errors)
|
|
36
|
1099 {
|
|
|
1100 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1101
|
|
|
1102 if (clcf->error_pages) {
|
|
|
1103
|
|
|
1104 err_page = clcf->error_pages->elts;
|
|
|
1105 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1106 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1107
|
|
|
1108 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1109
|
|
|
1110 r->headers_out.www_authenticate =
|
|
|
1111 ngx_list_push(&r->headers_out.headers);
|
|
|
1112
|
|
|
1113 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1114 ngx_http_upstream_finalize_request(r, u,
|
|
|
1115 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1116 return;
|
|
|
1117 }
|
|
|
1118
|
|
126
|
1119 *r->headers_out.www_authenticate =
|
|
78
|
1120 *u->headers_in.www_authenticate;
|
|
|
1121 }
|
|
|
1122
|
|
36
|
1123 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1124 u->headers_in.status_n);
|
|
36
|
1125 return;
|
|
|
1126 }
|
|
|
1127 }
|
|
|
1128 }
|
|
|
1129 }
|
|
|
1130
|
|
230
|
1131 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1132
|
|
64
|
1133 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1134
|
|
64
|
1135 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1136
|
|
|
1137 part = &r->upstream->headers_in.headers.part;
|
|
|
1138 h = part->elts;
|
|
|
1139
|
|
|
1140 for (i = 0; /* void */; i++) {
|
|
|
1141
|
|
|
1142 if (i >= part->nelts) {
|
|
|
1143 if (part->next == NULL) {
|
|
|
1144 break;
|
|
|
1145 }
|
|
126
|
1146
|
|
64
|
1147 part = part->next;
|
|
|
1148 h = part->elts;
|
|
|
1149 i = 0;
|
|
|
1150 }
|
|
|
1151
|
|
198
|
1152 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1153 h[i].lowcase_key, h[i].key.len);
|
|
|
1154
|
|
|
1155 if (hh && hh->redirect) {
|
|
|
1156 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1157 ngx_http_finalize_request(r,
|
|
244
|
1158 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1159 return;
|
|
|
1160 }
|
|
|
1161 }
|
|
|
1162 }
|
|
|
1163
|
|
122
|
1164 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1165 args.len = 0;
|
|
|
1166 args.data = NULL;
|
|
|
1167 flags = 0;
|
|
|
1168
|
|
|
1169 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1170 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1171 return;
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1175 r->zero_in_uri = 1;
|
|
|
1176 }
|
|
|
1177
|
|
202
|
1178 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1179 r->method = NGX_HTTP_GET;
|
|
|
1180 }
|
|
|
1181
|
|
122
|
1182 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1183 return;
|
|
|
1184 }
|
|
|
1185
|
|
58
|
1186 part = &r->upstream->headers_in.headers.part;
|
|
|
1187 h = part->elts;
|
|
|
1188
|
|
|
1189 for (i = 0; /* void */; i++) {
|
|
28
|
1190
|
|
58
|
1191 if (i >= part->nelts) {
|
|
|
1192 if (part->next == NULL) {
|
|
|
1193 break;
|
|
|
1194 }
|
|
126
|
1195
|
|
58
|
1196 part = part->next;
|
|
|
1197 h = part->elts;
|
|
|
1198 i = 0;
|
|
|
1199 }
|
|
|
1200
|
|
198
|
1201 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1202 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1203 {
|
|
198
|
1204 continue;
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1208 h[i].lowcase_key, h[i].key.len);
|
|
|
1209
|
|
|
1210 if (hh) {
|
|
|
1211 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1212 ngx_http_upstream_finalize_request(r, u,
|
|
|
1213 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1214 return;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 continue;
|
|
|
1218 }
|
|
|
1219
|
|
|
1220 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1221 ngx_http_upstream_finalize_request(r, u,
|
|
|
1222 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1223 return;
|
|
|
1224 }
|
|
|
1225 }
|
|
|
1226
|
|
198
|
1227 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1228 r->headers_out.server->hash = 0;
|
|
|
1229 }
|
|
|
1230
|
|
|
1231 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1232 r->headers_out.date->hash = 0;
|
|
|
1233 }
|
|
|
1234
|
|
78
|
1235 r->headers_out.status = u->headers_in.status_n;
|
|
|
1236 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1237
|
|
130
|
1238 if (r->headers_out.content_length_n != -1) {
|
|
|
1239 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1240
|
|
|
1241 } else {
|
|
|
1242 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1243 }
|
|
|
1244
|
|
248
|
1245 if (!r->subrequest_in_memory) {
|
|
|
1246 ngx_http_upstream_send_response(r, u);
|
|
|
1247 return;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 /* subrequest content in memory */
|
|
|
1251
|
|
|
1252 if (u->input_filter == NULL) {
|
|
|
1253 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1254 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1255 u->input_filter_ctx = r;
|
|
|
1256 }
|
|
|
1257
|
|
|
1258 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1259 ngx_http_upstream_finalize_request(r, u,
|
|
|
1260 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1261 return;
|
|
|
1262 }
|
|
|
1263
|
|
|
1264 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1265 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1266 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1267 return;
|
|
|
1268 }
|
|
|
1269
|
|
|
1270 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1271 return;
|
|
|
1272 }
|
|
|
1273
|
|
|
1274 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1275
|
|
|
1276 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1277 }
|
|
|
1278
|
|
|
1279
|
|
|
1280 static void
|
|
|
1281 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1282 {
|
|
|
1283 size_t size;
|
|
|
1284 ssize_t n;
|
|
|
1285 ngx_buf_t *b;
|
|
|
1286 ngx_connection_t *c;
|
|
|
1287 ngx_http_request_t *r;
|
|
|
1288 ngx_http_upstream_t *u;
|
|
|
1289
|
|
|
1290 c = rev->data;
|
|
|
1291 r = c->data;
|
|
|
1292 u = r->upstream;
|
|
|
1293
|
|
|
1294 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1295 "http upstream process body on memory");
|
|
|
1296
|
|
|
1297 if (rev->timedout) {
|
|
|
1298 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1299 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1300 return;
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 b = &u->buffer;
|
|
|
1304
|
|
|
1305 for ( ;; ) {
|
|
|
1306
|
|
|
1307 size = b->end - b->last;
|
|
|
1308
|
|
|
1309 if (size == 0) {
|
|
|
1310 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1311 "upstream buffer is too small to read repsonse");
|
|
|
1312 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1313 return;
|
|
|
1314 }
|
|
|
1315
|
|
|
1316 n = c->recv(c, b->last, size);
|
|
|
1317
|
|
|
1318 if (n == NGX_AGAIN) {
|
|
|
1319 break;
|
|
|
1320 }
|
|
|
1321
|
|
|
1322 if (n == 0 || n == NGX_ERROR) {
|
|
|
1323 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1324 return;
|
|
|
1325 }
|
|
|
1326
|
|
|
1327 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1328 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1329 return;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 if (!rev->ready) {
|
|
|
1333 break;
|
|
|
1334 }
|
|
|
1335 }
|
|
|
1336
|
|
|
1337 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1338 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1339 return;
|
|
|
1340 }
|
|
|
1341
|
|
|
1342 if (rev->active) {
|
|
|
1343 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1344
|
|
|
1345 } else if (rev->timer_set) {
|
|
|
1346 ngx_del_timer(rev);
|
|
|
1347 }
|
|
230
|
1348 }
|
|
|
1349
|
|
|
1350
|
|
|
1351 static void
|
|
|
1352 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1353 {
|
|
|
1354 int tcp_nodelay;
|
|
|
1355 ssize_t size;
|
|
|
1356 ngx_int_t rc;
|
|
|
1357 ngx_event_pipe_t *p;
|
|
|
1358 ngx_connection_t *c;
|
|
|
1359 ngx_pool_cleanup_t *cl;
|
|
|
1360 ngx_pool_cleanup_file_t *clf;
|
|
|
1361 ngx_http_core_loc_conf_t *clcf;
|
|
|
1362
|
|
58
|
1363 rc = ngx_http_send_header(r);
|
|
28
|
1364
|
|
274
|
1365 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1366 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1367 return;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 u->header_sent = 1;
|
|
|
1371
|
|
122
|
1372 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1373 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1374 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1375 clf = cl->data;
|
|
|
1376
|
|
|
1377 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1378 cl->handler(clf);
|
|
|
1379 cl->handler = NULL;
|
|
208
|
1380 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1381 break;
|
|
|
1382 }
|
|
|
1383 }
|
|
|
1384 }
|
|
|
1385 }
|
|
|
1386
|
|
132
|
1387 c = r->connection;
|
|
|
1388
|
|
130
|
1389 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1390
|
|
198
|
1391 if (!u->buffering) {
|
|
130
|
1392
|
|
|
1393 if (u->input_filter == NULL) {
|
|
|
1394 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1395 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1396 u->input_filter_ctx = r;
|
|
|
1397 }
|
|
|
1398
|
|
|
1399 u->peer.connection->read->handler =
|
|
|
1400 ngx_http_upstream_process_non_buffered_body;
|
|
|
1401 r->write_event_handler =
|
|
|
1402 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1403
|
|
|
1404 r->limit_rate = 0;
|
|
|
1405
|
|
|
1406 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1407 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1408 return;
|
|
|
1409 }
|
|
|
1410
|
|
132
|
1411 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1412 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1413
|
|
|
1414 tcp_nodelay = 1;
|
|
|
1415
|
|
|
1416 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1417 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1418 {
|
|
|
1419 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1420 "setsockopt(TCP_NODELAY) failed");
|
|
|
1421 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1422 return;
|
|
|
1423 }
|
|
|
1424
|
|
|
1425 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1426 }
|
|
|
1427
|
|
130
|
1428 size = u->buffer.last - u->buffer.pos;
|
|
|
1429
|
|
|
1430 if (size) {
|
|
|
1431 u->buffer.last = u->buffer.pos;
|
|
|
1432
|
|
|
1433 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1434 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1435 return;
|
|
|
1436 }
|
|
|
1437
|
|
132
|
1438 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1439
|
|
|
1440 } else {
|
|
|
1441 u->buffer.pos = u->buffer.start;
|
|
|
1442 u->buffer.last = u->buffer.start;
|
|
|
1443
|
|
|
1444 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1445 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1446 return;
|
|
|
1447 }
|
|
|
1448 }
|
|
|
1449
|
|
|
1450 return;
|
|
|
1451 }
|
|
|
1452
|
|
28
|
1453 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1454
|
|
|
1455 #if 0
|
|
|
1456
|
|
|
1457 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1458 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1459 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1460 ngx_close_file_n " \"%s\" failed",
|
|
|
1461 u->cache->ctx.file.name.data);
|
|
|
1462 }
|
|
|
1463 }
|
|
|
1464
|
|
|
1465 if (u->cachable) {
|
|
130
|
1466 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1467
|
|
|
1468 header->expires = u->cache->ctx.expires;
|
|
|
1469 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1470 header->date = u->cache->ctx.date;
|
|
|
1471 header->length = r->headers_out.content_length_n;
|
|
|
1472 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1473
|
|
|
1474 header->key_len = u->cache->ctx.key0.len;
|
|
|
1475 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1476 header->key[header->key_len] = LF;
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 #endif
|
|
|
1480
|
|
130
|
1481 p = u->pipe;
|
|
28
|
1482
|
|
|
1483 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1484 p->output_ctx = r;
|
|
|
1485 p->tag = u->output.tag;
|
|
126
|
1486 p->bufs = u->conf->bufs;
|
|
28
|
1487 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1488 p->upstream = u->peer.connection;
|
|
132
|
1489 p->downstream = c;
|
|
28
|
1490 p->pool = r->pool;
|
|
132
|
1491 p->log = c->log;
|
|
126
|
1492
|
|
28
|
1493 p->cachable = u->cachable;
|
|
|
1494
|
|
50
|
1495 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1496 if (p->temp_file == NULL) {
|
|
28
|
1497 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1498 return;
|
|
|
1499 }
|
|
|
1500
|
|
|
1501 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1502 p->temp_file->file.log = c->log;
|
|
28
|
1503 p->temp_file->path = u->conf->temp_path;
|
|
|
1504 p->temp_file->pool = r->pool;
|
|
126
|
1505
|
|
28
|
1506 if (u->cachable) {
|
|
|
1507 p->temp_file->persistent = 1;
|
|
|
1508 } else {
|
|
216
|
1509 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1510 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1511 "to a temporary file";
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1515 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1516
|
|
50
|
1517 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1518 if (p->preread_bufs == NULL) {
|
|
28
|
1519 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1520 return;
|
|
|
1521 }
|
|
130
|
1522 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1523 p->preread_bufs->next = NULL;
|
|
130
|
1524 u->buffer.recycled = 1;
|
|
|
1525
|
|
|
1526 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1527
|
|
|
1528 if (u->cachable) {
|
|
|
1529 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1530 if (p->buf_to_file == NULL) {
|
|
|
1531 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1532 return;
|
|
|
1533 }
|
|
130
|
1534 p->buf_to_file->pos = u->buffer.start;
|
|
|
1535 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1536 p->buf_to_file->temporary = 1;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1540 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1541 p->single_buf = 1;
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1545 p->free_bufs = 1;
|
|
|
1546
|
|
|
1547 /*
|
|
130
|
1548 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1549 * as though these bytes were read
|
|
|
1550 */
|
|
130
|
1551 u->buffer.last = u->buffer.pos;
|
|
28
|
1552
|
|
|
1553 if (u->conf->cyclic_temp_file) {
|
|
|
1554
|
|
|
1555 /*
|
|
|
1556 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1557 * because the writing a new data may interfere with sendfile()
|
|
|
1558 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1559 */
|
|
|
1560
|
|
|
1561 p->cyclic_temp_file = 1;
|
|
132
|
1562 c->sendfile = 0;
|
|
28
|
1563
|
|
|
1564 } else {
|
|
|
1565 p->cyclic_temp_file = 0;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 p->read_timeout = u->conf->read_timeout;
|
|
|
1569 p->send_timeout = clcf->send_timeout;
|
|
|
1570 p->send_lowat = clcf->send_lowat;
|
|
|
1571
|
|
58
|
1572 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1573 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1574
|
|
|
1575 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1576 }
|
|
|
1577
|
|
|
1578
|
|
36
|
1579 static void
|
|
130
|
1580 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1581 {
|
|
|
1582 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1583 }
|
|
|
1584
|
|
|
1585
|
|
|
1586 static void
|
|
|
1587 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1588 {
|
|
|
1589 size_t size;
|
|
|
1590 ssize_t n;
|
|
|
1591 ngx_buf_t *b;
|
|
132
|
1592 ngx_int_t rc;
|
|
130
|
1593 ngx_uint_t do_write;
|
|
260
|
1594 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1595 ngx_http_request_t *r;
|
|
|
1596 ngx_http_upstream_t *u;
|
|
|
1597 ngx_http_core_loc_conf_t *clcf;
|
|
|
1598
|
|
|
1599 c = ev->data;
|
|
244
|
1600 r = c->data;
|
|
|
1601 u = r->upstream;
|
|
130
|
1602
|
|
|
1603 if (ev->write) {
|
|
|
1604 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1605 "http upstream process non buffered downstream");
|
|
|
1606 c->log->action = "sending to client";
|
|
|
1607
|
|
|
1608 } else {
|
|
|
1609 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1610 "http upstream process non buffered upstream");
|
|
|
1611 c->log->action = "reading upstream";
|
|
|
1612 }
|
|
|
1613
|
|
|
1614 if (ev->timedout) {
|
|
|
1615 if (ev->write) {
|
|
|
1616 c->timedout = 1;
|
|
160
|
1617 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1618
|
|
130
|
1619 } else {
|
|
160
|
1620 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1621 }
|
|
244
|
1622
|
|
|
1623 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1624 return;
|
|
130
|
1625 }
|
|
|
1626
|
|
260
|
1627 downstream = r->connection;
|
|
|
1628 upstream = u->peer.connection;
|
|
130
|
1629
|
|
|
1630 b = &u->buffer;
|
|
|
1631
|
|
|
1632 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1633
|
|
206
|
1634 do_write = ev->write || u->length == 0;
|
|
130
|
1635
|
|
|
1636 for ( ;; ) {
|
|
|
1637
|
|
|
1638 if (do_write) {
|
|
|
1639
|
|
|
1640 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1641 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1642
|
|
260
|
1643 if (downstream->destroyed) {
|
|
132
|
1644 return;
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 if (rc == NGX_ERROR) {
|
|
130
|
1648 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1649 return;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1653 &u->out_bufs, u->output.tag);
|
|
|
1654 }
|
|
|
1655
|
|
|
1656 if (u->busy_bufs == NULL) {
|
|
|
1657
|
|
|
1658 if (u->length == 0
|
|
260
|
1659 || upstream->read->eof
|
|
|
1660 || upstream->read->error)
|
|
130
|
1661 {
|
|
|
1662 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1663 return;
|
|
|
1664 }
|
|
|
1665
|
|
|
1666 b->pos = b->start;
|
|
|
1667 b->last = b->start;
|
|
|
1668 }
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 size = b->end - b->last;
|
|
|
1672
|
|
|
1673 if (size > u->length) {
|
|
|
1674 size = u->length;
|
|
|
1675 }
|
|
|
1676
|
|
260
|
1677 if (size && upstream->read->ready) {
|
|
|
1678
|
|
|
1679 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1680
|
|
|
1681 if (n == NGX_AGAIN) {
|
|
|
1682 break;
|
|
|
1683 }
|
|
|
1684
|
|
|
1685 if (n > 0) {
|
|
|
1686 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1687 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1688 return;
|
|
|
1689 }
|
|
|
1690 }
|
|
|
1691
|
|
|
1692 do_write = 1;
|
|
|
1693
|
|
|
1694 continue;
|
|
|
1695 }
|
|
|
1696
|
|
|
1697 break;
|
|
|
1698 }
|
|
|
1699
|
|
260
|
1700 if (downstream->data == r) {
|
|
|
1701 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1702 == NGX_ERROR)
|
|
|
1703 {
|
|
|
1704 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1705 return;
|
|
|
1706 }
|
|
130
|
1707 }
|
|
|
1708
|
|
276
|
1709 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1710 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1711
|
|
|
1712 } else if (downstream->write->timer_set) {
|
|
|
1713 ngx_del_timer(downstream->write);
|
|
130
|
1714 }
|
|
|
1715
|
|
260
|
1716 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1717 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1718 return;
|
|
|
1719 }
|
|
|
1720
|
|
276
|
1721 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1722 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1723
|
|
|
1724 } else if (upstream->read->timer_set) {
|
|
|
1725 ngx_del_timer(upstream->read);
|
|
130
|
1726 }
|
|
|
1727 }
|
|
|
1728
|
|
|
1729
|
|
|
1730 static ngx_int_t
|
|
|
1731 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1732 {
|
|
|
1733 return NGX_OK;
|
|
|
1734 }
|
|
|
1735
|
|
|
1736
|
|
|
1737 static ngx_int_t
|
|
|
1738 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1739 {
|
|
|
1740 ngx_http_request_t *r = data;
|
|
|
1741
|
|
|
1742 ngx_buf_t *b;
|
|
|
1743 ngx_chain_t *cl, **ll;
|
|
|
1744 ngx_http_upstream_t *u;
|
|
|
1745
|
|
|
1746 u = r->upstream;
|
|
|
1747
|
|
|
1748 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1749 ll = &cl->next;
|
|
|
1750 }
|
|
|
1751
|
|
|
1752 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1753 if (cl == NULL) {
|
|
|
1754 return NGX_ERROR;
|
|
|
1755 }
|
|
|
1756
|
|
|
1757 *ll = cl;
|
|
|
1758
|
|
|
1759 cl->buf->flush = 1;
|
|
|
1760 cl->buf->memory = 1;
|
|
|
1761
|
|
|
1762 b = &u->buffer;
|
|
|
1763
|
|
|
1764 cl->buf->pos = b->last;
|
|
|
1765 b->last += bytes;
|
|
|
1766 cl->buf->last = b->last;
|
|
|
1767
|
|
|
1768 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1769 return NGX_OK;
|
|
|
1770 }
|
|
|
1771
|
|
|
1772 u->length -= bytes;
|
|
|
1773
|
|
|
1774 return NGX_OK;
|
|
|
1775 }
|
|
|
1776
|
|
|
1777
|
|
|
1778 static void
|
|
58
|
1779 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1780 {
|
|
|
1781 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1782 }
|
|
|
1783
|
|
|
1784
|
|
|
1785 static void
|
|
36
|
1786 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1787 {
|
|
58
|
1788 ngx_event_pipe_t *p;
|
|
132
|
1789 ngx_connection_t *c, *downstream;
|
|
284
|
1790 ngx_http_log_ctx_t *ctx;
|
|
28
|
1791 ngx_http_request_t *r;
|
|
|
1792 ngx_http_upstream_t *u;
|
|
|
1793
|
|
|
1794 c = ev->data;
|
|
|
1795 r = c->data;
|
|
|
1796 u = r->upstream;
|
|
132
|
1797 downstream = r->connection;
|
|
28
|
1798
|
|
|
1799 if (ev->write) {
|
|
32
|
1800 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1801 "http upstream process downstream");
|
|
|
1802 c->log->action = "sending to client";
|
|
126
|
1803
|
|
28
|
1804 } else {
|
|
32
|
1805 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1806 "http upstream process upstream");
|
|
|
1807 c->log->action = "reading upstream";
|
|
284
|
1808
|
|
|
1809 ctx = c->log->data;
|
|
|
1810 ctx->current_request = r;
|
|
28
|
1811 }
|
|
126
|
1812
|
|
130
|
1813 p = u->pipe;
|
|
28
|
1814
|
|
|
1815 if (ev->timedout) {
|
|
|
1816 if (ev->write) {
|
|
76
|
1817 if (ev->delayed) {
|
|
|
1818
|
|
|
1819 ev->timedout = 0;
|
|
|
1820 ev->delayed = 0;
|
|
|
1821
|
|
|
1822 if (!ev->ready) {
|
|
|
1823 ngx_add_timer(ev, p->send_timeout);
|
|
|
1824
|
|
|
1825 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1826 {
|
|
|
1827 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1828 return;
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 return;
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1835
|
|
|
1836 if (downstream->destroyed) {
|
|
|
1837 return;
|
|
|
1838 }
|
|
|
1839
|
|
76
|
1840 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1841 return;
|
|
|
1842 }
|
|
|
1843
|
|
|
1844 } else {
|
|
|
1845 p->downstream_error = 1;
|
|
126
|
1846 c->timedout = 1;
|
|
160
|
1847 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1848 }
|
|
28
|
1849
|
|
|
1850 } else {
|
|
126
|
1851 p->upstream_error = 1;
|
|
160
|
1852 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1853 }
|
|
|
1854
|
|
|
1855 } else {
|
|
76
|
1856 if (ev->write && ev->delayed) {
|
|
|
1857 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1858 "http downstream delayed");
|
|
|
1859
|
|
|
1860 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1861 return;
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 return;
|
|
|
1865 }
|
|
|
1866
|
|
28
|
1867 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1868
|
|
|
1869 if (downstream->destroyed) {
|
|
|
1870 return;
|
|
|
1871 }
|
|
|
1872
|
|
28
|
1873 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1874 return;
|
|
|
1875 }
|
|
|
1876 }
|
|
126
|
1877
|
|
28
|
1878 if (u->peer.connection) {
|
|
|
1879
|
|
|
1880 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1881
|
|
|
1882 if (p->upstream_done && u->cachable) {
|
|
|
1883 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1884 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1885 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1886 return;
|
|
|
1887 }
|
|
|
1888
|
|
|
1889 } else if (p->upstream_eof && u->cachable) {
|
|
|
1890
|
|
|
1891 /* TODO: check length & update cache */
|
|
|
1892
|
|
|
1893 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1894 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1895 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1896 return;
|
|
|
1897 }
|
|
|
1898 }
|
|
|
1899
|
|
|
1900 #endif
|
|
|
1901
|
|
|
1902 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1903 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1904 "http upstream exit: %p", p->out);
|
|
28
|
1905 #if 0
|
|
|
1906 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1907 #endif
|
|
|
1908 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1909 return;
|
|
|
1910 }
|
|
|
1911 }
|
|
|
1912
|
|
|
1913 if (p->downstream_error) {
|
|
32
|
1914 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1915 "http upstream downstream error");
|
|
28
|
1916
|
|
|
1917 if (!u->cachable && u->peer.connection) {
|
|
|
1918 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1919 }
|
|
|
1920 }
|
|
|
1921 }
|
|
|
1922
|
|
|
1923
|
|
36
|
1924 static void
|
|
|
1925 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1926 {
|
|
|
1927 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1928 "http upstream dummy handler");
|
|
|
1929 }
|
|
|
1930
|
|
|
1931
|
|
36
|
1932 static void
|
|
|
1933 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1934 ngx_uint_t ft_type)
|
|
28
|
1935 {
|
|
260
|
1936 ngx_uint_t status, state;
|
|
28
|
1937
|
|
|
1938 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
1939 "http next upstream, %xi", ft_type);
|
|
28
|
1940
|
|
|
1941 #if 0
|
|
|
1942 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1943 #endif
|
|
|
1944
|
|
74
|
1945 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
1946 state = NGX_PEER_NEXT;
|
|
74
|
1947 } else {
|
|
260
|
1948 state = NGX_PEER_FAILED;
|
|
28
|
1949 }
|
|
74
|
1950
|
|
260
|
1951 u->peer.free(&u->peer, u->peer.data, state);
|
|
74
|
1952
|
|
28
|
1953 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1954 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1955 "upstream timed out");
|
|
|
1956 }
|
|
126
|
1957
|
|
28
|
1958 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1959 status = 0;
|
|
|
1960
|
|
|
1961 } else {
|
|
|
1962 switch(ft_type) {
|
|
|
1963
|
|
|
1964 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1965 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1966 break;
|
|
|
1967
|
|
|
1968 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1969 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1970 break;
|
|
|
1971
|
|
|
1972 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1973 status = NGX_HTTP_NOT_FOUND;
|
|
|
1974 break;
|
|
|
1975
|
|
|
1976 /*
|
|
|
1977 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1978 * never reach here
|
|
|
1979 */
|
|
|
1980
|
|
|
1981 default:
|
|
|
1982 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1983 }
|
|
|
1984 }
|
|
|
1985
|
|
132
|
1986 if (r->connection->error) {
|
|
28
|
1987 ngx_http_upstream_finalize_request(r, u,
|
|
|
1988 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1989 return;
|
|
|
1990 }
|
|
|
1991
|
|
|
1992 if (status) {
|
|
|
1993 u->state->status = status;
|
|
|
1994
|
|
74
|
1995 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1996
|
|
|
1997 #if (NGX_HTTP_CACHE)
|
|
|
1998
|
|
|
1999 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2000 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2001 ngx_http_send_cached_response(r));
|
|
28
|
2002 return;
|
|
|
2003 }
|
|
|
2004
|
|
|
2005 #endif
|
|
|
2006
|
|
|
2007 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2008 return;
|
|
|
2009 }
|
|
|
2010 }
|
|
|
2011
|
|
|
2012 if (u->peer.connection) {
|
|
|
2013 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2014 "close http upstream connection: %d",
|
|
|
2015 u->peer.connection->fd);
|
|
126
|
2016 #if (NGX_HTTP_SSL)
|
|
260
|
2017
|
|
126
|
2018 if (u->peer.connection->ssl) {
|
|
260
|
2019 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2020 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2021
|
|
|
2022 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2023 }
|
|
|
2024 #endif
|
|
260
|
2025
|
|
28
|
2026 ngx_close_connection(u->peer.connection);
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 #if 0
|
|
|
2030 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2031 ngx_http_upstream_busy_lock(p);
|
|
|
2032 return;
|
|
|
2033 }
|
|
|
2034 #endif
|
|
|
2035
|
|
|
2036 ngx_http_upstream_connect(r, u);
|
|
|
2037 }
|
|
|
2038
|
|
|
2039
|
|
36
|
2040 static void
|
|
118
|
2041 ngx_http_upstream_cleanup(void *data)
|
|
|
2042 {
|
|
|
2043 ngx_http_request_t *r = data;
|
|
|
2044
|
|
|
2045 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2046 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2047
|
|
|
2048 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2049 }
|
|
|
2050
|
|
|
2051
|
|
|
2052 static void
|
|
36
|
2053 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2054 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2055 {
|
|
262
|
2056 ngx_time_t *tp;
|
|
112
|
2057
|
|
32
|
2058 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2059 "finalize http upstream request: %i", rc);
|
|
28
|
2060
|
|
118
|
2061 *u->cleanup = NULL;
|
|
|
2062
|
|
262
|
2063 if (u->state->response_sec) {
|
|
112
|
2064 tp = ngx_timeofday();
|
|
262
|
2065 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2066 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2067 }
|
|
|
2068
|
|
28
|
2069 u->finalize_request(r, rc);
|
|
|
2070
|
|
260
|
2071 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2072
|
|
28
|
2073 if (u->peer.connection) {
|
|
260
|
2074
|
|
126
|
2075 #if (NGX_HTTP_SSL)
|
|
|
2076
|
|
|
2077 /* TODO: do not shutdown persistent connection */
|
|
|
2078
|
|
|
2079 if (u->peer.connection->ssl) {
|
|
260
|
2080
|
|
|
2081 /*
|
|
|
2082 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2083 * and do not wait its "close notify" shutdown alert.
|
|
|
2084 * It is acceptable according to the TLS standard.
|
|
|
2085 */
|
|
|
2086
|
|
|
2087 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2088
|
|
|
2089 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2090 }
|
|
|
2091 #endif
|
|
260
|
2092
|
|
|
2093 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2094 "close http upstream connection: %d",
|
|
|
2095 u->peer.connection->fd);
|
|
|
2096
|
|
28
|
2097 ngx_close_connection(u->peer.connection);
|
|
|
2098 }
|
|
|
2099
|
|
32
|
2100 u->peer.connection = NULL;
|
|
|
2101
|
|
112
|
2102 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2103 {
|
|
|
2104 rc = 0;
|
|
|
2105 }
|
|
|
2106
|
|
130
|
2107 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2108 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2109 "http upstream temp fd: %d",
|
|
130
|
2110 u->pipe->temp_file->file.fd);
|
|
28
|
2111 }
|
|
|
2112
|
|
|
2113 #if 0
|
|
|
2114 if (u->cache) {
|
|
|
2115 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2116 "http upstream cache fd: %d",
|
|
28
|
2117 u->cache->ctx.file.fd);
|
|
|
2118 }
|
|
|
2119 #endif
|
|
|
2120
|
|
64
|
2121 if (rc == NGX_DECLINED) {
|
|
|
2122 return;
|
|
|
2123 }
|
|
|
2124
|
|
32
|
2125 r->connection->log->action = "sending to client";
|
|
|
2126
|
|
178
|
2127 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
2128 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2129 }
|
|
|
2130
|
|
|
2131 ngx_http_finalize_request(r, rc);
|
|
|
2132 }
|
|
|
2133
|
|
|
2134
|
|
58
|
2135 static ngx_int_t
|
|
|
2136 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2137 ngx_uint_t offset)
|
|
126
|
2138 {
|
|
58
|
2139 ngx_table_elt_t **ph;
|
|
126
|
2140
|
|
58
|
2141 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2142
|
|
|
2143 if (*ph == NULL) {
|
|
|
2144 *ph = h;
|
|
|
2145 }
|
|
|
2146
|
|
|
2147 return NGX_OK;
|
|
|
2148 }
|
|
|
2149
|
|
|
2150
|
|
|
2151 static ngx_int_t
|
|
|
2152 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2153 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2154 {
|
|
|
2155 ngx_array_t *pa;
|
|
|
2156 ngx_table_elt_t **ph;
|
|
|
2157
|
|
|
2158 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2159
|
|
|
2160 if (pa->elts == NULL) {
|
|
|
2161 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2162 {
|
|
|
2163 return NGX_ERROR;
|
|
|
2164 }
|
|
|
2165 }
|
|
|
2166
|
|
|
2167 ph = ngx_array_push(pa);
|
|
|
2168 if (ph == NULL) {
|
|
|
2169 return NGX_ERROR;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172 *ph = h;
|
|
|
2173
|
|
|
2174 return NGX_OK;
|
|
|
2175 }
|
|
|
2176
|
|
|
2177
|
|
|
2178 static ngx_int_t
|
|
|
2179 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2180 ngx_uint_t offset)
|
|
|
2181 {
|
|
|
2182 return NGX_OK;
|
|
|
2183 }
|
|
|
2184
|
|
|
2185
|
|
|
2186 static ngx_int_t
|
|
76
|
2187 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2188 ngx_uint_t offset)
|
|
126
|
2189 {
|
|
76
|
2190 ngx_int_t n;
|
|
|
2191
|
|
|
2192 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2193
|
|
|
2194 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2195
|
|
|
2196 if (n != NGX_ERROR) {
|
|
|
2197 r->limit_rate = (size_t) n;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 return NGX_OK;
|
|
|
2201 }
|
|
|
2202
|
|
|
2203
|
|
|
2204 static ngx_int_t
|
|
198
|
2205 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2206 ngx_uint_t offset)
|
|
|
2207 {
|
|
|
2208 u_char c0, c1, c2;
|
|
|
2209
|
|
|
2210 if (r->upstream->conf->change_buffering) {
|
|
|
2211
|
|
|
2212 if (h->value.len == 2) {
|
|
|
2213 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2214 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2215
|
|
|
2216 if (c0 == 'n' && c1 == 'o') {
|
|
|
2217 r->upstream->buffering = 0;
|
|
|
2218 }
|
|
|
2219
|
|
|
2220 } else if (h->value.len == 3) {
|
|
|
2221 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2222 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2223 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2224
|
|
|
2225 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2226 r->upstream->buffering = 1;
|
|
|
2227 }
|
|
|
2228 }
|
|
|
2229 }
|
|
|
2230
|
|
|
2231 return NGX_OK;
|
|
|
2232 }
|
|
|
2233
|
|
|
2234
|
|
|
2235 static ngx_int_t
|
|
206
|
2236 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2237 ngx_uint_t offset)
|
|
|
2238 {
|
|
|
2239 r->headers_out.override_charset = &h->value;
|
|
|
2240
|
|
|
2241 return NGX_OK;
|
|
|
2242 }
|
|
|
2243
|
|
|
2244
|
|
|
2245 static ngx_int_t
|
|
58
|
2246 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2247 ngx_uint_t offset)
|
|
|
2248 {
|
|
122
|
2249 ngx_table_elt_t *ho, **ph;
|
|
58
|
2250
|
|
|
2251 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2252 if (ho == NULL) {
|
|
|
2253 return NGX_ERROR;
|
|
|
2254 }
|
|
|
2255
|
|
|
2256 *ho = *h;
|
|
|
2257
|
|
122
|
2258 if (offset) {
|
|
|
2259 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2260 *ph = ho;
|
|
|
2261 }
|
|
|
2262
|
|
58
|
2263 return NGX_OK;
|
|
|
2264 }
|
|
|
2265
|
|
|
2266
|
|
|
2267 static ngx_int_t
|
|
|
2268 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2269 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2270 {
|
|
|
2271 ngx_array_t *pa;
|
|
|
2272 ngx_table_elt_t *ho, **ph;
|
|
|
2273
|
|
|
2274 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2275
|
|
|
2276 if (pa->elts == NULL) {
|
|
|
2277 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2278 {
|
|
|
2279 return NGX_ERROR;
|
|
|
2280 }
|
|
|
2281 }
|
|
|
2282
|
|
|
2283 ph = ngx_array_push(pa);
|
|
|
2284 if (ph == NULL) {
|
|
|
2285 return NGX_ERROR;
|
|
|
2286 }
|
|
|
2287
|
|
|
2288 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2289 if (ho == NULL) {
|
|
|
2290 return NGX_ERROR;
|
|
|
2291 }
|
|
|
2292
|
|
|
2293 *ho = *h;
|
|
|
2294 *ph = ho;
|
|
|
2295
|
|
|
2296 return NGX_OK;
|
|
|
2297 }
|
|
|
2298
|
|
|
2299
|
|
|
2300 static ngx_int_t
|
|
|
2301 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2302 ngx_uint_t offset)
|
|
|
2303 {
|
|
206
|
2304 u_char *p, *last;
|
|
|
2305
|
|
|
2306 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2307 r->headers_out.content_type = h->value;
|
|
|
2308
|
|
206
|
2309 for (p = h->value.data; *p; p++) {
|
|
|
2310
|
|
|
2311 if (*p != ';') {
|
|
|
2312 continue;
|
|
|
2313 }
|
|
|
2314
|
|
|
2315 last = p;
|
|
|
2316
|
|
|
2317 while (*++p == ' ') { /* void */ }
|
|
|
2318
|
|
286
|
2319 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2320 continue;
|
|
|
2321 }
|
|
|
2322
|
|
|
2323 p += 8;
|
|
|
2324
|
|
|
2325 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2326
|
|
|
2327 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2328 r->headers_out.charset.data = p;
|
|
292
|
2329
|
|
|
2330 return NGX_OK;
|
|
206
|
2331 }
|
|
|
2332
|
|
58
|
2333 return NGX_OK;
|
|
|
2334 }
|
|
|
2335
|
|
|
2336
|
|
|
2337 static ngx_int_t
|
|
|
2338 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2339 ngx_uint_t offset)
|
|
|
2340 {
|
|
|
2341 ngx_table_elt_t *ho;
|
|
|
2342
|
|
|
2343 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2344 if (ho == NULL) {
|
|
|
2345 return NGX_ERROR;
|
|
|
2346 }
|
|
|
2347
|
|
|
2348 *ho = *h;
|
|
|
2349
|
|
|
2350 r->headers_out.content_length = ho;
|
|
|
2351 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2352
|
|
|
2353 return NGX_OK;
|
|
|
2354 }
|
|
|
2355
|
|
|
2356
|
|
|
2357 static ngx_int_t
|
|
|
2358 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2359 ngx_uint_t offset)
|
|
|
2360 {
|
|
|
2361 ngx_int_t rc;
|
|
|
2362 ngx_table_elt_t *ho;
|
|
|
2363
|
|
|
2364 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2365 if (ho == NULL) {
|
|
|
2366 return NGX_ERROR;
|
|
|
2367 }
|
|
|
2368
|
|
|
2369 *ho = *h;
|
|
|
2370
|
|
|
2371 if (r->upstream->rewrite_redirect) {
|
|
|
2372 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2373
|
|
78
|
2374 if (rc == NGX_DECLINED) {
|
|
|
2375 return NGX_OK;
|
|
|
2376 }
|
|
|
2377
|
|
58
|
2378 if (rc == NGX_OK) {
|
|
|
2379 r->headers_out.location = ho;
|
|
|
2380
|
|
|
2381 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2382 "rewritten location: \"%V\"", &ho->value);
|
|
|
2383 }
|
|
|
2384
|
|
|
2385 return rc;
|
|
|
2386 }
|
|
|
2387
|
|
|
2388 /*
|
|
|
2389 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2390 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2391 */
|
|
|
2392
|
|
|
2393 return NGX_OK;
|
|
|
2394 }
|
|
|
2395
|
|
|
2396
|
|
|
2397 static ngx_int_t
|
|
|
2398 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2399 ngx_uint_t offset)
|
|
|
2400 {
|
|
|
2401 u_char *p;
|
|
|
2402 ngx_int_t rc;
|
|
|
2403 ngx_table_elt_t *ho;
|
|
|
2404
|
|
|
2405 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2406 if (ho == NULL) {
|
|
|
2407 return NGX_ERROR;
|
|
|
2408 }
|
|
|
2409
|
|
|
2410 *ho = *h;
|
|
|
2411
|
|
|
2412 if (r->upstream->rewrite_redirect) {
|
|
|
2413
|
|
|
2414 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2415
|
|
|
2416 if (p) {
|
|
|
2417 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2418
|
|
|
2419 } else {
|
|
|
2420 return NGX_OK;
|
|
|
2421 }
|
|
|
2422
|
|
78
|
2423 if (rc == NGX_DECLINED) {
|
|
|
2424 return NGX_OK;
|
|
|
2425 }
|
|
|
2426
|
|
58
|
2427 #if (NGX_DEBUG)
|
|
|
2428 if (rc == NGX_OK) {
|
|
|
2429 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2430 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2431 }
|
|
|
2432 #endif
|
|
|
2433
|
|
|
2434 return rc;
|
|
|
2435 }
|
|
|
2436
|
|
|
2437 return NGX_OK;
|
|
|
2438 }
|
|
|
2439
|
|
|
2440
|
|
|
2441 #if (NGX_HTTP_GZIP)
|
|
|
2442
|
|
|
2443 static ngx_int_t
|
|
|
2444 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2445 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2446 {
|
|
|
2447 ngx_table_elt_t *ho;
|
|
|
2448
|
|
|
2449 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2450 if (ho == NULL) {
|
|
|
2451 return NGX_ERROR;
|
|
|
2452 }
|
|
|
2453
|
|
|
2454 *ho = *h;
|
|
|
2455
|
|
|
2456 r->headers_out.content_encoding = ho;
|
|
|
2457
|
|
|
2458 return NGX_OK;
|
|
|
2459 }
|
|
|
2460
|
|
|
2461 #endif
|
|
|
2462
|
|
|
2463
|
|
36
|
2464 static ngx_int_t
|
|
122
|
2465 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2466 {
|
|
260
|
2467 ngx_http_variable_t *var, *v;
|
|
28
|
2468
|
|
122
|
2469 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2470 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2471 if (var == NULL) {
|
|
|
2472 return NGX_ERROR;
|
|
|
2473 }
|
|
|
2474
|
|
186
|
2475 var->get_handler = v->get_handler;
|
|
122
|
2476 var->data = v->data;
|
|
|
2477 }
|
|
|
2478
|
|
28
|
2479 return NGX_OK;
|
|
|
2480 }
|
|
58
|
2481
|
|
|
2482
|
|
122
|
2483 static ngx_int_t
|
|
|
2484 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2485 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2486 {
|
|
|
2487 u_char *p;
|
|
|
2488 size_t len;
|
|
|
2489 ngx_uint_t i;
|
|
|
2490 ngx_http_upstream_t *u;
|
|
|
2491 ngx_http_upstream_state_t *state;
|
|
|
2492
|
|
|
2493 v->valid = 1;
|
|
|
2494 v->no_cachable = 0;
|
|
|
2495 v->not_found = 0;
|
|
|
2496
|
|
|
2497 u = r->upstream;
|
|
|
2498
|
|
|
2499 if (u == NULL || u->states.nelts == 0) {
|
|
|
2500 v->not_found = 1;
|
|
|
2501 return NGX_OK;
|
|
|
2502 }
|
|
|
2503
|
|
|
2504 len = u->states.nelts * (3 + 2);
|
|
|
2505
|
|
|
2506 p = ngx_palloc(r->pool, len);
|
|
|
2507 if (p == NULL) {
|
|
|
2508 return NGX_ERROR;
|
|
|
2509 }
|
|
|
2510
|
|
|
2511 v->data = p;
|
|
|
2512
|
|
|
2513 i = 0;
|
|
|
2514 state = u->states.elts;
|
|
|
2515
|
|
|
2516 for ( ;; ) {
|
|
|
2517 if (state[i].status == 0) {
|
|
|
2518 *p++ = '-';
|
|
|
2519
|
|
|
2520 } else {
|
|
|
2521 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2522 }
|
|
|
2523
|
|
|
2524 if (++i == u->states.nelts) {
|
|
|
2525 break;
|
|
|
2526 }
|
|
|
2527
|
|
|
2528 *p++ = ',';
|
|
|
2529 *p++ = ' ';
|
|
|
2530 }
|
|
|
2531
|
|
|
2532 v->len = p - v->data;
|
|
|
2533
|
|
|
2534 return NGX_OK;
|
|
|
2535 }
|
|
|
2536
|
|
|
2537
|
|
|
2538 static ngx_int_t
|
|
|
2539 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2540 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2541 {
|
|
|
2542 u_char *p;
|
|
|
2543 size_t len;
|
|
|
2544 ngx_uint_t i;
|
|
262
|
2545 ngx_msec_int_t ms;
|
|
122
|
2546 ngx_http_upstream_t *u;
|
|
|
2547 ngx_http_upstream_state_t *state;
|
|
|
2548
|
|
|
2549 v->valid = 1;
|
|
|
2550 v->no_cachable = 0;
|
|
|
2551 v->not_found = 0;
|
|
|
2552
|
|
|
2553 u = r->upstream;
|
|
|
2554
|
|
|
2555 if (u == NULL || u->states.nelts == 0) {
|
|
|
2556 v->not_found = 1;
|
|
|
2557 return NGX_OK;
|
|
|
2558 }
|
|
|
2559
|
|
|
2560 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2561
|
|
|
2562 p = ngx_palloc(r->pool, len);
|
|
|
2563 if (p == NULL) {
|
|
|
2564 return NGX_ERROR;
|
|
|
2565 }
|
|
|
2566
|
|
|
2567 v->data = p;
|
|
|
2568
|
|
|
2569 i = 0;
|
|
|
2570 state = u->states.elts;
|
|
|
2571
|
|
|
2572 for ( ;; ) {
|
|
|
2573 if (state[i].status == 0) {
|
|
|
2574 *p++ = '-';
|
|
|
2575
|
|
|
2576 } else {
|
|
262
|
2577 ms = state[i].response_sec * 1000 + state[i].response_msec;
|
|
|
2578 ms = (ms >= 0) ? ms : 0;
|
|
|
2579 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
122
|
2580 }
|
|
|
2581
|
|
|
2582 if (++i == u->states.nelts) {
|
|
|
2583 break;
|
|
|
2584 }
|
|
|
2585
|
|
|
2586 *p++ = ',';
|
|
|
2587 *p++ = ' ';
|
|
|
2588 }
|
|
|
2589
|
|
|
2590 v->len = p - v->data;
|
|
|
2591
|
|
|
2592 return NGX_OK;
|
|
|
2593 }
|
|
|
2594
|
|
|
2595
|
|
200
|
2596 static char *
|
|
|
2597 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
2598 {
|
|
260
|
2599 char *rv;
|
|
|
2600 void *mconf;
|
|
|
2601 ngx_str_t *value;
|
|
|
2602 ngx_url_t u;
|
|
|
2603 ngx_uint_t m;
|
|
|
2604 ngx_conf_t pcf;
|
|
|
2605 ngx_http_module_t *module;
|
|
|
2606 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
2607 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
2608
|
|
|
2609 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2610
|
|
|
2611 value = cf->args->elts;
|
|
|
2612 u.host = value[1];
|
|
|
2613 u.no_resolve = 1;
|
|
|
2614
|
|
|
2615 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
2616 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
2617 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
2618 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
2619 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
2620 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
2621 if (uscf == NULL) {
|
|
|
2622 return NGX_CONF_ERROR;
|
|
|
2623 }
|
|
|
2624
|
|
200
|
2625
|
|
|
2626 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
2627 if (ctx == NULL) {
|
|
|
2628 return NGX_CONF_ERROR;
|
|
|
2629 }
|
|
|
2630
|
|
260
|
2631 http_ctx = cf->ctx;
|
|
|
2632 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
2633
|
|
|
2634 /* the upstream{}'s srv_conf */
|
|
|
2635
|
|
|
2636 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2637 if (ctx->srv_conf == NULL) {
|
|
|
2638 return NGX_CONF_ERROR;
|
|
|
2639 }
|
|
|
2640
|
|
|
2641 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
2642
|
|
260
|
2643 uscf->srv_conf = ctx->srv_conf;
|
|
|
2644
|
|
200
|
2645
|
|
|
2646 /* the upstream{}'s loc_conf */
|
|
|
2647
|
|
|
2648 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
2649 if (ctx->loc_conf == NULL) {
|
|
|
2650 return NGX_CONF_ERROR;
|
|
|
2651 }
|
|
|
2652
|
|
|
2653 for (m = 0; ngx_modules[m]; m++) {
|
|
|
2654 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
2655 continue;
|
|
|
2656 }
|
|
|
2657
|
|
|
2658 module = ngx_modules[m]->ctx;
|
|
|
2659
|
|
260
|
2660 if (module->create_srv_conf) {
|
|
|
2661 mconf = module->create_srv_conf(cf);
|
|
|
2662 if (mconf == NULL) {
|
|
|
2663 return NGX_CONF_ERROR;
|
|
|
2664 }
|
|
|
2665
|
|
|
2666 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2667 }
|
|
|
2668
|
|
200
|
2669 if (module->create_loc_conf) {
|
|
|
2670 mconf = module->create_loc_conf(cf);
|
|
|
2671 if (mconf == NULL) {
|
|
|
2672 return NGX_CONF_ERROR;
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
2676 }
|
|
|
2677 }
|
|
|
2678
|
|
|
2679
|
|
|
2680 /* parse inside upstream{} */
|
|
|
2681
|
|
|
2682 pcf = *cf;
|
|
|
2683 cf->ctx = ctx;
|
|
|
2684 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
2685
|
|
|
2686 rv = ngx_conf_parse(cf, NULL);
|
|
|
2687
|
|
|
2688 *cf = pcf;
|
|
|
2689
|
|
|
2690 if (rv != NGX_CONF_OK) {
|
|
|
2691 return rv;
|
|
|
2692 }
|
|
|
2693
|
|
|
2694 if (uscf->servers == NULL) {
|
|
|
2695 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2696 "no servers are inside upstream");
|
|
|
2697 return NGX_CONF_ERROR;
|
|
|
2698 }
|
|
|
2699
|
|
|
2700 return rv;
|
|
|
2701 }
|
|
|
2702
|
|
|
2703
|
|
|
2704 static char *
|
|
|
2705 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
2706 {
|
|
|
2707 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
2708
|
|
260
|
2709 time_t fail_timeout;
|
|
|
2710 ngx_str_t *value, s;
|
|
|
2711 ngx_url_t u;
|
|
|
2712 ngx_int_t weight, max_fails;
|
|
|
2713 ngx_uint_t i;
|
|
|
2714 ngx_http_upstream_server_t *us;
|
|
200
|
2715
|
|
|
2716 if (uscf->servers == NULL) {
|
|
260
|
2717 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
2718 sizeof(ngx_http_upstream_server_t));
|
|
200
|
2719 if (uscf->servers == NULL) {
|
|
|
2720 return NGX_CONF_ERROR;
|
|
|
2721 }
|
|
|
2722 }
|
|
|
2723
|
|
260
|
2724 us = ngx_array_push(uscf->servers);
|
|
|
2725 if (us == NULL) {
|
|
200
|
2726 return NGX_CONF_ERROR;
|
|
|
2727 }
|
|
|
2728
|
|
260
|
2729 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
2730
|
|
200
|
2731 value = cf->args->elts;
|
|
|
2732
|
|
|
2733 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
2734
|
|
|
2735 u.url = value[1];
|
|
266
|
2736 u.default_port = 80;
|
|
200
|
2737
|
|
|
2738 if (ngx_parse_url(cf, &u) != NGX_OK) {
|
|
|
2739 if (u.err) {
|
|
|
2740 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2741 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
2742 }
|
|
|
2743
|
|
|
2744 return NGX_CONF_ERROR;
|
|
|
2745 }
|
|
|
2746
|
|
212
|
2747 weight = 1;
|
|
260
|
2748 max_fails = 1;
|
|
|
2749 fail_timeout = 10;
|
|
|
2750
|
|
|
2751 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
2752
|
|
|
2753 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
2754
|
|
|
2755 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
2756 goto invalid;
|
|
|
2757 }
|
|
|
2758
|
|
|
2759 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
2760
|
|
|
2761 if (weight == NGX_ERROR || weight == 0) {
|
|
|
2762 goto invalid;
|
|
|
2763 }
|
|
|
2764
|
|
260
|
2765 continue;
|
|
|
2766 }
|
|
|
2767
|
|
|
2768 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
2769
|
|
|
2770 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
2771 goto invalid;
|
|
|
2772 }
|
|
|
2773
|
|
|
2774 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
2775
|
|
|
2776 if (max_fails == NGX_ERROR) {
|
|
|
2777 goto invalid;
|
|
|
2778 }
|
|
|
2779
|
|
|
2780 continue;
|
|
212
|
2781 }
|
|
260
|
2782
|
|
|
2783 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
2784
|
|
|
2785 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
2786 goto invalid;
|
|
|
2787 }
|
|
|
2788
|
|
|
2789 s.len = value[i].len - 13;
|
|
|
2790 s.data = &value[i].data[13];
|
|
|
2791
|
|
|
2792 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
2793
|
|
|
2794 if (fail_timeout < 0) {
|
|
|
2795 goto invalid;
|
|
|
2796 }
|
|
|
2797
|
|
|
2798 continue;
|
|
|
2799 }
|
|
|
2800
|
|
|
2801 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
2802
|
|
|
2803 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
2804 goto invalid;
|
|
|
2805 }
|
|
|
2806
|
|
|
2807 us->down = 1;
|
|
|
2808
|
|
|
2809 continue;
|
|
|
2810 }
|
|
|
2811
|
|
|
2812 goto invalid;
|
|
212
|
2813 }
|
|
|
2814
|
|
260
|
2815 us->addrs = u.addrs;
|
|
|
2816 us->naddrs = u.naddrs;
|
|
|
2817 us->weight = weight;
|
|
|
2818 us->max_fails = max_fails;
|
|
|
2819 us->fail_timeout = fail_timeout;
|
|
200
|
2820
|
|
|
2821 return NGX_CONF_OK;
|
|
212
|
2822
|
|
|
2823 invalid:
|
|
|
2824
|
|
260
|
2825 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2826 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
2827
|
|
|
2828 return NGX_CONF_ERROR;
|
|
200
|
2829 }
|
|
|
2830
|
|
|
2831
|
|
|
2832 ngx_http_upstream_srv_conf_t *
|
|
260
|
2833 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
2834 {
|
|
|
2835 ngx_uint_t i;
|
|
260
|
2836 ngx_http_upstream_server_t *us;
|
|
200
|
2837 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
2838 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2839
|
|
260
|
2840 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
2841
|
|
200
|
2842 if (ngx_parse_url(cf, u) != NGX_OK) {
|
|
|
2843 if (u->err) {
|
|
|
2844 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2845 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
2846 }
|
|
|
2847
|
|
|
2848 return NULL;
|
|
|
2849 }
|
|
|
2850 }
|
|
|
2851
|
|
|
2852 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
2853
|
|
|
2854 uscfp = umcf->upstreams.elts;
|
|
|
2855
|
|
|
2856 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
2857
|
|
|
2858 if (uscfp[i]->host.len != u->host.len
|
|
260
|
2859 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
2860 != 0)
|
|
|
2861 {
|
|
200
|
2862 continue;
|
|
|
2863 }
|
|
|
2864
|
|
260
|
2865 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
2866 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
2867 {
|
|
260
|
2868 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
2869 "duplicate upstream \"%V\"", &u->host);
|
|
|
2870 return NULL;
|
|
200
|
2871 }
|
|
260
|
2872
|
|
266
|
2873 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
2874 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
2875 "upstream \"%V\" may not have port %d",
|
|
|
2876 &u->host, u->port);
|
|
|
2877 return NULL;
|
|
|
2878 }
|
|
|
2879
|
|
|
2880 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
2881 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
2882 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
2883 &u->host, uscfp[i]->port,
|
|
|
2884 uscfp[i]->file_name.data, uscfp[i]->line);
|
|
|
2885 return NULL;
|
|
|
2886 }
|
|
|
2887
|
|
|
2888 if (uscfp[i]->port != u->port) {
|
|
|
2889 continue;
|
|
260
|
2890 }
|
|
|
2891
|
|
|
2892 return uscfp[i];
|
|
200
|
2893 }
|
|
|
2894
|
|
|
2895 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
2896 if (uscf == NULL) {
|
|
|
2897 return NULL;
|
|
|
2898 }
|
|
|
2899
|
|
260
|
2900 uscf->flags = flags;
|
|
200
|
2901 uscf->host = u->host;
|
|
|
2902 uscf->file_name = cf->conf_file->file.name;
|
|
|
2903 uscf->line = cf->conf_file->line;
|
|
266
|
2904 uscf->port = u->port;
|
|
|
2905 uscf->default_port = u->default_port;
|
|
260
|
2906
|
|
|
2907 if (u->naddrs == 1) {
|
|
|
2908 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
2909 sizeof(ngx_http_upstream_server_t));
|
|
|
2910 if (uscf->servers == NULL) {
|
|
|
2911 return NGX_CONF_ERROR;
|
|
|
2912 }
|
|
|
2913
|
|
|
2914 us = ngx_array_push(uscf->servers);
|
|
|
2915 if (us == NULL) {
|
|
|
2916 return NGX_CONF_ERROR;
|
|
|
2917 }
|
|
|
2918
|
|
|
2919 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
2920
|
|
|
2921 us->addrs = u->addrs;
|
|
|
2922 us->naddrs = u->naddrs;
|
|
|
2923 }
|
|
200
|
2924
|
|
|
2925 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
2926 if (uscfp == NULL) {
|
|
|
2927 return NULL;
|
|
|
2928 }
|
|
|
2929
|
|
|
2930 *uscfp = uscf;
|
|
|
2931
|
|
|
2932 return uscf;
|
|
|
2933 }
|
|
|
2934
|
|
|
2935
|
|
58
|
2936 static void *
|
|
|
2937 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2938 {
|
|
|
2939 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2940
|
|
|
2941 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2942 if (umcf == NULL) {
|
|
|
2943 return NULL;
|
|
|
2944 }
|
|
|
2945
|
|
200
|
2946 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
2947 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
2948 != NGX_OK)
|
|
|
2949 {
|
|
|
2950 return NGX_CONF_ERROR;
|
|
|
2951 }
|
|
|
2952
|
|
58
|
2953 return umcf;
|
|
|
2954 }
|
|
|
2955
|
|
|
2956
|
|
|
2957 static char *
|
|
200
|
2958 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
2959 {
|
|
|
2960 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2961
|
|
200
|
2962 ngx_uint_t i;
|
|
|
2963 ngx_array_t headers_in;
|
|
|
2964 ngx_hash_key_t *hk;
|
|
|
2965 ngx_hash_init_t hash;
|
|
260
|
2966 ngx_http_upstream_init_pt init;
|
|
200
|
2967 ngx_http_upstream_header_t *header;
|
|
|
2968 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
2969
|
|
|
2970 uscfp = umcf->upstreams.elts;
|
|
|
2971
|
|
|
2972 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
2973
|
|
|
2974 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
2975 ngx_http_upstream_init_round_robin;
|
|
|
2976
|
|
|
2977 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
2978 return NGX_CONF_ERROR;
|
|
|
2979 }
|
|
|
2980 }
|
|
198
|
2981
|
|
212
|
2982
|
|
260
|
2983 /* upstream_headers_in_hash */
|
|
|
2984
|
|
198
|
2985 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2986 != NGX_OK)
|
|
58
|
2987 {
|
|
|
2988 return NGX_CONF_ERROR;
|
|
|
2989 }
|
|
|
2990
|
|
198
|
2991 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2992 hk = ngx_array_push(&headers_in);
|
|
|
2993 if (hk == NULL) {
|
|
|
2994 return NGX_CONF_ERROR;
|
|
|
2995 }
|
|
|
2996
|
|
|
2997 hk->key = header->name;
|
|
|
2998 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2999 hk->value = header;
|
|
|
3000 }
|
|
|
3001
|
|
|
3002 hash.hash = &umcf->headers_in_hash;
|
|
|
3003 hash.key = ngx_hash_key_lc;
|
|
|
3004 hash.max_size = 512;
|
|
244
|
3005 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3006 hash.name = "upstream_headers_in_hash";
|
|
|
3007 hash.pool = cf->pool;
|
|
|
3008 hash.temp_pool = NULL;
|
|
|
3009
|
|
|
3010 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3011 return NGX_CONF_ERROR;
|
|
|
3012 }
|
|
58
|
3013
|
|
|
3014 return NGX_CONF_OK;
|
|
|
3015 }
|
