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