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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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58
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9 #include <ngx_event_connect.h>
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28
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10 #include <ngx_http.h>
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11
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12
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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28
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23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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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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58
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27 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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28 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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29 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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30 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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31 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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32 static void ngx_http_upstream_cleanup(void *data);
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28
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33 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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34 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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35
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58
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36 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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37 ngx_table_elt_t *h, ngx_uint_t offset);
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38 static ngx_int_t
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39 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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40 ngx_table_elt_t *h, ngx_uint_t offset);
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41 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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43 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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44 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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45 static ngx_int_t ngx_http_upstream_copy_header_line(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
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48 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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50 static ngx_int_t
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51 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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53 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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55 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 #if (NGX_HTTP_GZIP)
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62 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 #endif
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65
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28
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66 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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67 uintptr_t data);
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68 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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69 u_char *buf, ngx_http_log_op_t *op);
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122
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70 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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71 uintptr_t data);
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112
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72 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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73 u_char *buf, ngx_http_log_op_t *op);
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28
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74
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58
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75 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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76 size_t len);
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122
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77
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78 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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79 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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80 ngx_http_variable_value_t *v, uintptr_t data);
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81 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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82 ngx_http_variable_value_t *v, uintptr_t data);
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83
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58
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84 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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85 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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86
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126
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87 #if (NGX_HTTP_SSL)
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88 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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89 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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90 ngx_peer_t *peer);
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91 #endif
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92
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58
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93
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94 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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95
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96 { ngx_string("Status"),
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97 ngx_http_upstream_process_header_line,
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98 offsetof(ngx_http_upstream_headers_in_t, status),
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64
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99 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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100
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101 { ngx_string("Content-Type"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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104 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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105
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106 { ngx_string("Content-Length"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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109 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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110
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111 { ngx_string("Date"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, date),
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114 ngx_http_upstream_conditional_copy_header_line,
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64
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115 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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58
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116
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117 { ngx_string("Server"),
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118 ngx_http_upstream_process_header_line,
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119 offsetof(ngx_http_upstream_headers_in_t, server),
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120 ngx_http_upstream_conditional_copy_header_line,
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64
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121 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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58
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122
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78
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123 { ngx_string("WWW-Authenticate"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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126 ngx_http_upstream_copy_header_line, 0, 0 },
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127
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58
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128 { ngx_string("Location"),
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129 ngx_http_upstream_ignore_header_line, 0,
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64
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130 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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131
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132 { ngx_string("Refresh"),
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133 ngx_http_upstream_ignore_header_line, 0,
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64
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134 ngx_http_upstream_rewrite_refresh, 0, 0 },
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135
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136 { ngx_string("Set-Cookie"),
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137 ngx_http_upstream_ignore_header_line, 0,
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80
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138 ngx_http_upstream_copy_header_line, 0, 1 },
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139
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140 { ngx_string("Content-Disposition"),
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141 ngx_http_upstream_ignore_header_line, 0,
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142 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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143
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144 { ngx_string("Cache-Control"),
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145 ngx_http_upstream_process_multi_header_lines,
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146 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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147 ngx_http_upstream_copy_multi_header_lines,
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64
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148 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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149
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122
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150 { ngx_string("Expires"),
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151 ngx_http_upstream_process_header_line,
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152 offsetof(ngx_http_upstream_headers_in_t, expires),
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153 ngx_http_upstream_copy_header_line,
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154 offsetof(ngx_http_headers_out_t, expires), 1 },
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155
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126
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156 { ngx_string("Accept-Ranges"),
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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159 ngx_http_upstream_copy_header_line,
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160 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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161
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58
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162 { ngx_string("Connection"),
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163 ngx_http_upstream_ignore_header_line, 0,
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64
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164 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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165
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166 { ngx_string("X-Pad"),
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167 ngx_http_upstream_ignore_header_line, 0,
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64
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168 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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169
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170 { ngx_string("X-Powered-By"),
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171 ngx_http_upstream_ignore_header_line, 0,
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172 ngx_http_upstream_conditional_copy_header_line,
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64
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173 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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58
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174
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175 { ngx_string("X-Accel-Expires"),
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176 ngx_http_upstream_process_header_line,
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177 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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178 ngx_http_upstream_conditional_copy_header_line,
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64
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179 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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180
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181 { ngx_string("X-Accel-Redirect"),
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182 ngx_http_upstream_process_header_line,
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183 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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184 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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185
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76
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186 { ngx_string("X-Accel-Limit-Rate"),
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187 ngx_http_upstream_process_limit_rate, 0,
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188 ngx_http_upstream_ignore_header_line, 0, 0 },
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189
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58
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190 #if (NGX_HTTP_GZIP)
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191 { ngx_string("Content-Encoding"),
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192 ngx_http_upstream_process_header_line,
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193 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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194 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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195 #endif
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196
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64
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197 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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198 };
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28
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199
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200
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201 ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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202 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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203 NULL, /* postconfiguration */
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204
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205 ngx_http_upstream_create_main_conf, /* create main configuration */
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206 ngx_http_core_init_main_conf, /* init main configuration */
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28
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207
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208 NULL, /* create server configuration */
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209 NULL, /* merge server configuration */
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210
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211 NULL, /* create location configuration */
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212 NULL /* merge location configuration */
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213 };
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126
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214
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28
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215
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216 ngx_module_t ngx_http_upstream_module = {
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58
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217 NGX_MODULE_V1,
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28
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218 &ngx_http_upstream_module_ctx, /* module context */
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219 NULL, /* module directives */
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220 NGX_HTTP_MODULE, /* module type */
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90
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221 NULL, /* init master */
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222 NULL, /* init module */
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90
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223 NULL, /* init process */
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224 NULL, /* init thread */
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225 NULL, /* exit thread */
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226 NULL, /* exit process */
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227 NULL, /* exit master */
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228 NGX_MODULE_V1_PADDING
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28
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229 };
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230
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231
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232 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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233 { ngx_string("upstream_status"), 0, NULL,
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122
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234 ngx_http_upstream_log_status_getlen,
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235 ngx_http_upstream_log_status },
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236 { ngx_string("upstream_response_time"), 0, NULL,
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237 ngx_http_upstream_log_response_time_getlen,
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238 ngx_http_upstream_log_response_time },
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28
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239 { ngx_null_string, 0, NULL, NULL, NULL }
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240 };
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241
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242
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122
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243 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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244
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245 { ngx_string("upstream_status"),
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246 ngx_http_upstream_status_variable, 0, 0, 0 },
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247
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248 { ngx_string("upstream_response_time"),
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249 ngx_http_upstream_response_time_variable, 0, 0, 0 },
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250
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251 { ngx_null_string, NULL, 0, 0, 0 }
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252 };
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253
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254
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28
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255 char *ngx_http_upstream_header_errors[] = {
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256 "upstream sent invalid header",
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257 "upstream sent too long header line"
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258 };
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259
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260
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36
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261 void
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262 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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263 {
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112
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264 ngx_time_t *tp;
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58
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265 ngx_connection_t *c;
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118
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266 ngx_http_cleanup_t *cln;
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58
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267 ngx_http_upstream_t *u;
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268 ngx_http_core_loc_conf_t *clcf;
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28
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269
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270 c = r->connection;
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271
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272 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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273 "http init upstream, client timer: %d", c->read->timer_set);
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274
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275 if (c->read->timer_set) {
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276 ngx_del_timer(c->read);
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277 }
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278
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58
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279 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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80
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280 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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126
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281
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28
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282 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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283
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284 if (!c->write->active) {
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80
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285 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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286 == NGX_ERROR)
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28
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287 {
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288 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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289 return;
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290 }
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291 }
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292 }
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293
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294 u = r->upstream;
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295
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86
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296 if (r->request_body) {
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297 u->request_bufs = r->request_body->bufs;
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298 }
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58
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299
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86
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300 if (u->create_request(r) != NGX_OK) {
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28
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301 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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302 return;
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303 }
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304
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305 u->peer.log = r->connection->log;
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58
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306 u->saved_log_handler = r->log_handler;
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307 r->log_handler = ngx_http_upstream_log_error;
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308
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309 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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310
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311 u->output.sendfile = r->connection->sendfile;
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312 u->output.pool = r->pool;
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313 u->output.bufs.num = 1;
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58
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314 u->output.bufs.size = clcf->client_body_buffer_size;
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28
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315 u->output.output_filter = ngx_chain_writer;
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316 u->output.filter_ctx = &u->writer;
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317
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318 u->writer.pool = r->pool;
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319
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320 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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118
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321 sizeof(ngx_http_upstream_state_t))
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322 != NGX_OK)
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28
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323 {
|
|
|
324 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
325 return;
|
|
|
326 }
|
|
|
327
|
|
50
|
328 u->state = ngx_array_push(&u->states);
|
|
|
329 if (u->state == NULL) {
|
|
28
|
330 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
331 return;
|
|
|
332 }
|
|
|
333
|
|
|
334 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
335
|
|
112
|
336 tp = ngx_timeofday();
|
|
|
337
|
|
|
338 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
339
|
|
118
|
340 cln = ngx_http_cleanup_add(r, sizeof(void *));
|
|
|
341 if (cln == NULL) {
|
|
|
342 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
343 return;
|
|
|
344 }
|
|
|
345
|
|
|
346 cln->handler = ngx_http_upstream_cleanup;
|
|
|
347 cln->data = r;
|
|
|
348 u->cleanup = &cln->handler;
|
|
|
349
|
|
28
|
350 ngx_http_upstream_connect(r, u);
|
|
|
351 }
|
|
|
352
|
|
|
353
|
|
36
|
354 static void
|
|
58
|
355 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
356 {
|
|
|
357 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
358 }
|
|
|
359
|
|
|
360
|
|
|
361 static void
|
|
|
362 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
363 {
|
|
|
364 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
365 }
|
|
|
366
|
|
|
367
|
|
|
368 static void
|
|
|
369 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
370 ngx_event_t *ev)
|
|
28
|
371 {
|
|
|
372 int n;
|
|
|
373 char buf[1];
|
|
126
|
374 ngx_err_t err;
|
|
28
|
375 ngx_connection_t *c;
|
|
|
376 ngx_http_upstream_t *u;
|
|
|
377
|
|
76
|
378 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
379 "http upstream check client, write event:%d, \"%V\"",
|
|
|
380 ev->write, &r->uri);
|
|
28
|
381
|
|
58
|
382 c = r->connection;
|
|
32
|
383 u = r->upstream;
|
|
|
384
|
|
76
|
385 if (c->closed) {
|
|
|
386 ngx_http_upstream_finalize_request(r, u,
|
|
|
387 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
388 return;
|
|
|
389 }
|
|
|
390
|
|
32
|
391 if (u->peer.connection == NULL) {
|
|
|
392 return;
|
|
|
393 }
|
|
|
394
|
|
28
|
395 #if (NGX_HAVE_KQUEUE)
|
|
|
396
|
|
|
397 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
398
|
|
|
399 if (!ev->pending_eof) {
|
|
|
400 return;
|
|
|
401 }
|
|
|
402
|
|
|
403 ev->eof = 1;
|
|
76
|
404 c->closed = 1;
|
|
28
|
405
|
|
|
406 if (ev->kq_errno) {
|
|
|
407 ev->error = 1;
|
|
|
408 }
|
|
|
409
|
|
|
410 if (!u->cachable && u->peer.connection) {
|
|
|
411 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
412 "kevent() reported that client closed prematurely "
|
|
|
413 "connection, so upstream connection is closed too");
|
|
28
|
414 ngx_http_upstream_finalize_request(r, u,
|
|
|
415 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
|
419 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
420 "kevent() reported that client closed "
|
|
|
421 "prematurely connection");
|
|
|
422
|
|
|
423 if (u->peer.connection == NULL) {
|
|
|
424 ngx_http_upstream_finalize_request(r, u,
|
|
|
425 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
426 return;
|
|
|
427 }
|
|
|
428
|
|
|
429 return;
|
|
|
430 }
|
|
|
431
|
|
|
432 #endif
|
|
|
433
|
|
|
434 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
435
|
|
|
436 err = ngx_socket_errno;
|
|
|
437
|
|
|
438 /*
|
|
|
439 * we do not need to disable the write event because
|
|
|
440 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
441 */
|
|
|
442
|
|
|
443 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
444 return;
|
|
|
445 }
|
|
|
446
|
|
|
447 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
448 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
449 ngx_http_upstream_finalize_request(r, u,
|
|
|
450 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
451 return;
|
|
|
452 }
|
|
|
453 }
|
|
|
454
|
|
|
455 if (n > 0) {
|
|
|
456 return;
|
|
|
457 }
|
|
|
458
|
|
|
459 if (n == -1) {
|
|
|
460 if (err == NGX_EAGAIN) {
|
|
|
461 return;
|
|
|
462 }
|
|
|
463
|
|
|
464 ev->error = 1;
|
|
|
465
|
|
32
|
466 } else { /* n == 0 */
|
|
28
|
467 err = 0;
|
|
|
468 }
|
|
|
469
|
|
78
|
470 ev->eof = 1;
|
|
|
471 c->closed = 1;
|
|
|
472
|
|
28
|
473 if (!u->cachable && u->peer.connection) {
|
|
|
474 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
475 "client closed prematurely connection, "
|
|
|
476 "so upstream connection is closed too");
|
|
|
477 ngx_http_upstream_finalize_request(r, u,
|
|
|
478 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
479 return;
|
|
|
480 }
|
|
|
481
|
|
|
482 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
483 "client closed prematurely connection");
|
|
|
484
|
|
|
485 if (u->peer.connection == NULL) {
|
|
|
486 ngx_http_upstream_finalize_request(r, u,
|
|
|
487 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
488 return;
|
|
|
489 }
|
|
|
490 }
|
|
|
491
|
|
|
492
|
|
36
|
493 static void
|
|
|
494 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
495 {
|
|
|
496 ngx_int_t rc;
|
|
126
|
497 ngx_peer_t *peer;
|
|
28
|
498 ngx_connection_t *c;
|
|
|
499
|
|
32
|
500 r->connection->log->action = "connecting to upstream";
|
|
28
|
501
|
|
|
502 r->connection->single_connection = 0;
|
|
|
503
|
|
|
504 rc = ngx_event_connect_peer(&u->peer);
|
|
|
505
|
|
|
506 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
507 "http upstream connect: %i", rc);
|
|
|
508
|
|
|
509 if (rc == NGX_ERROR) {
|
|
|
510 ngx_http_upstream_finalize_request(r, u,
|
|
|
511 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
512 return;
|
|
|
513 }
|
|
|
514
|
|
126
|
515 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
516 u->state->peer = &peer->name;
|
|
28
|
517
|
|
92
|
518 if (rc == NGX_BUSY) {
|
|
|
519 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
520 }
|
|
|
521
|
|
|
522 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
523 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
524 return;
|
|
|
525 }
|
|
|
526
|
|
126
|
527 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
528
|
|
28
|
529 c = u->peer.connection;
|
|
|
530
|
|
|
531 c->data = r;
|
|
58
|
532 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
533 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
534
|
|
|
535 c->sendfile = r->connection->sendfile;
|
|
|
536
|
|
|
537 c->pool = r->pool;
|
|
|
538 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
539
|
|
|
540 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
541
|
|
|
542 u->writer.out = NULL;
|
|
|
543 u->writer.last = &u->writer.out;
|
|
|
544 u->writer.connection = c;
|
|
|
545 u->writer.limit = 0;
|
|
|
546
|
|
|
547 if (u->request_sent) {
|
|
58
|
548 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
549 ngx_http_upstream_finalize_request(r, u,
|
|
|
550 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
551 return;
|
|
|
552 }
|
|
28
|
553 }
|
|
|
554
|
|
122
|
555 if (r->request_body && r->request_body->temp_file && r->main == r) {
|
|
|
556
|
|
|
557 /*
|
|
|
558 * the r->request_body->buf can be reused for one request only,
|
|
|
559 * the subrequests should allocate their own temporay bufs
|
|
|
560 */
|
|
|
561
|
|
|
562 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
563 if (u->output.free == NULL) {
|
|
|
564 ngx_http_upstream_finalize_request(r, u,
|
|
|
565 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
566 return;
|
|
28
|
567 }
|
|
122
|
568
|
|
|
569 u->output.free->buf = r->request_body->buf;
|
|
|
570 u->output.free->next = NULL;
|
|
|
571 u->output.allocated = 1;
|
|
|
572
|
|
|
573 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
574 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
575 r->request_body->buf->tag = u->output.tag;
|
|
28
|
576 }
|
|
|
577
|
|
|
578 u->request_sent = 0;
|
|
|
579
|
|
|
580 if (rc == NGX_AGAIN) {
|
|
|
581 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
582 return;
|
|
|
583 }
|
|
|
584
|
|
|
585 /* rc == NGX_OK */
|
|
|
586
|
|
126
|
587 #if (NGX_HTTP_SSL)
|
|
|
588
|
|
|
589 if (u->conf->ssl) {
|
|
|
590 if (c->ssl == NULL) {
|
|
|
591
|
|
|
592 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
593 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
594 == NGX_ERROR)
|
|
|
595 {
|
|
|
596 ngx_http_upstream_finalize_request(r, u,
|
|
|
597 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
598 return;
|
|
|
599 }
|
|
|
600
|
|
|
601 c->sendfile = 0;
|
|
|
602 }
|
|
|
603
|
|
|
604 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
605 ngx_http_upstream_finalize_request(r, u,
|
|
|
606 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
607 return;
|
|
|
608 }
|
|
|
609
|
|
|
610 rc = ngx_ssl_handshake(c);
|
|
|
611
|
|
|
612 if (rc == NGX_AGAIN) {
|
|
|
613 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
614 return;
|
|
|
615 }
|
|
|
616
|
|
|
617 ngx_http_upstream_ssl_handshake(c);
|
|
|
618
|
|
|
619 return;
|
|
|
620 }
|
|
|
621
|
|
|
622 #endif
|
|
|
623
|
|
28
|
624 ngx_http_upstream_send_request(r, u);
|
|
|
625 }
|
|
|
626
|
|
|
627
|
|
126
|
628 #if (NGX_HTTP_SSL)
|
|
|
629
|
|
|
630 static void
|
|
|
631 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
632 {
|
|
|
633 ngx_http_request_t *r;
|
|
|
634 ngx_http_upstream_t *u;
|
|
|
635
|
|
|
636 r = c->data;
|
|
|
637 u = r->upstream;
|
|
|
638
|
|
|
639 if (c->ssl->handshaked) {
|
|
|
640
|
|
|
641 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
642 c->read->handler = ngx_http_upstream_process_header;
|
|
|
643
|
|
|
644 ngx_http_upstream_send_request(r, u);
|
|
|
645
|
|
|
646 return;
|
|
|
647 }
|
|
|
648
|
|
|
649 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
650
|
|
|
651 }
|
|
|
652
|
|
|
653 #endif
|
|
|
654
|
|
|
655
|
|
58
|
656 static ngx_int_t
|
|
36
|
657 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
658 {
|
|
|
659 ngx_chain_t *cl;
|
|
|
660
|
|
58
|
661 if (u->reinit_request(r) != NGX_OK) {
|
|
|
662 return NGX_ERROR;
|
|
|
663 }
|
|
|
664
|
|
|
665 ngx_memzero(&r->upstream->headers_in,
|
|
|
666 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
667
|
|
|
668 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
669 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
|
670 {
|
|
|
671 return NGX_ERROR;
|
|
28
|
672 }
|
|
|
673
|
|
|
674 /* reinit the request chain */
|
|
126
|
675
|
|
58
|
676 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
677 cl->buf->pos = cl->buf->start;
|
|
|
678 cl->buf->file_pos = 0;
|
|
|
679 }
|
|
|
680
|
|
58
|
681 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
682
|
|
122
|
683 if (r->request_body && r->request_body->temp_file
|
|
|
684 && r->main != r && u->output.buf)
|
|
|
685 {
|
|
|
686 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
687 if (u->output.free == NULL) {
|
|
|
688 return NGX_ERROR;
|
|
58
|
689 }
|
|
122
|
690
|
|
|
691 u->output.free->buf = u->output.buf;
|
|
|
692 u->output.free->next = NULL;
|
|
|
693
|
|
|
694 u->output.buf->pos = u->output.buf->start;
|
|
|
695 u->output.buf->last = u->output.buf->start;
|
|
58
|
696 }
|
|
28
|
697
|
|
|
698 u->output.buf = NULL;
|
|
|
699 u->output.in = NULL;
|
|
|
700 u->output.busy = NULL;
|
|
126
|
701
|
|
28
|
702 /* reinit u->header_in buffer */
|
|
126
|
703
|
|
28
|
704 #if 0
|
|
|
705 if (u->cache) {
|
|
|
706 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
|
|
|
707 u->header_in.last = u->header_in.pos;
|
|
|
708
|
|
|
709 } else {
|
|
|
710 u->header_in.pos = u->header_in.start;
|
|
|
711 u->header_in.last = u->header_in.start;
|
|
|
712 }
|
|
|
713 #else
|
|
58
|
714
|
|
28
|
715 u->header_in.pos = u->header_in.start;
|
|
|
716 u->header_in.last = u->header_in.start;
|
|
58
|
717
|
|
28
|
718 #endif
|
|
|
719
|
|
|
720 /* add one more state */
|
|
|
721
|
|
50
|
722 u->state = ngx_array_push(&u->states);
|
|
|
723 if (u->state == NULL) {
|
|
58
|
724 return NGX_ERROR;
|
|
28
|
725 }
|
|
|
726
|
|
|
727 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
728
|
|
|
729 return NGX_OK;
|
|
28
|
730 }
|
|
|
731
|
|
|
732
|
|
36
|
733 static void
|
|
|
734 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
735 {
|
|
32
|
736 int rc;
|
|
|
737 ngx_connection_t *c;
|
|
126
|
738
|
|
28
|
739 c = u->peer.connection;
|
|
|
740
|
|
|
741 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
742 "http upstream send request");
|
|
|
743
|
|
|
744 #if (NGX_HAVE_KQUEUE)
|
|
|
745
|
|
|
746 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
747 && !u->request_sent
|
|
|
748 && c->write->pending_eof)
|
|
|
749 {
|
|
86
|
750 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
751 "kevent() reported that connect() failed");
|
|
28
|
752 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
753 return;
|
|
|
754 }
|
|
|
755
|
|
|
756 #endif
|
|
|
757
|
|
32
|
758 c->log->action = "sending request to upstream";
|
|
28
|
759
|
|
58
|
760 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
761
|
|
|
762 u->request_sent = 1;
|
|
|
763
|
|
|
764 if (rc == NGX_ERROR) {
|
|
|
765 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
766 return;
|
|
|
767 }
|
|
|
768
|
|
|
769 if (c->write->timer_set) {
|
|
|
770 ngx_del_timer(c->write);
|
|
|
771 }
|
|
|
772
|
|
|
773 if (rc == NGX_AGAIN) {
|
|
|
774 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
775
|
|
|
776 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
777 {
|
|
|
778 ngx_http_upstream_finalize_request(r, u,
|
|
|
779 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
780 return;
|
|
|
781 }
|
|
|
782
|
|
|
783 return;
|
|
|
784 }
|
|
|
785
|
|
|
786 /* rc == NGX_OK */
|
|
|
787
|
|
|
788 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
789 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
790 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
791 ngx_tcp_push_n " failed");
|
|
|
792 ngx_http_upstream_finalize_request(r, u,
|
|
|
793 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
794 return;
|
|
28
|
795 }
|
|
|
796
|
|
|
797 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
798 }
|
|
126
|
799
|
|
28
|
800 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
801
|
|
|
802 #if 1
|
|
|
803 if (c->read->ready) {
|
|
126
|
804
|
|
28
|
805 /* post aio operation */
|
|
|
806
|
|
|
807 /*
|
|
|
808 * TODO comment
|
|
|
809 * although we can post aio operation just in the end
|
|
|
810 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
811 * it's better to do here because we postpone header buffer allocation
|
|
|
812 */
|
|
|
813
|
|
|
814 ngx_http_upstream_process_header(c->read);
|
|
|
815 return;
|
|
|
816 }
|
|
|
817 #endif
|
|
|
818
|
|
58
|
819 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
820
|
|
58
|
821 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
822 ngx_http_upstream_finalize_request(r, u,
|
|
|
823 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
824 return;
|
|
|
825 }
|
|
|
826 }
|
|
|
827
|
|
|
828
|
|
36
|
829 static void
|
|
|
830 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
831 {
|
|
|
832 ngx_connection_t *c;
|
|
|
833 ngx_http_request_t *r;
|
|
|
834 ngx_http_upstream_t *u;
|
|
|
835
|
|
|
836 c = wev->data;
|
|
|
837 r = c->data;
|
|
|
838 u = r->upstream;
|
|
|
839
|
|
|
840 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
841 "http upstream send request handler");
|
|
|
842
|
|
|
843 if (wev->timedout) {
|
|
32
|
844 c->log->action = "sending request to upstream";
|
|
28
|
845 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
846 return;
|
|
|
847 }
|
|
|
848
|
|
|
849 ngx_http_upstream_send_request(r, u);
|
|
|
850 }
|
|
|
851
|
|
|
852
|
|
36
|
853 static void
|
|
|
854 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
855 {
|
|
64
|
856 ssize_t n;
|
|
|
857 ngx_int_t rc;
|
|
122
|
858 ngx_str_t *uri, args;
|
|
|
859 ngx_uint_t i, key, flags;
|
|
64
|
860 ngx_list_part_t *part;
|
|
|
861 ngx_table_elt_t *h;
|
|
|
862 ngx_connection_t *c;
|
|
|
863 ngx_http_request_t *r;
|
|
|
864 ngx_http_upstream_t *u;
|
|
|
865 ngx_http_err_page_t *err_page;
|
|
|
866 ngx_http_core_loc_conf_t *clcf;
|
|
|
867 ngx_http_upstream_header_t *hh;
|
|
|
868 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
869
|
|
|
870 c = rev->data;
|
|
|
871 r = c->data;
|
|
|
872 u = r->upstream;
|
|
|
873
|
|
|
874 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
875 "http upstream process header");
|
|
28
|
876
|
|
32
|
877 c->log->action = "reading response header from upstream";
|
|
28
|
878
|
|
|
879 if (rev->timedout) {
|
|
|
880 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
881 return;
|
|
|
882 }
|
|
126
|
883
|
|
28
|
884 if (u->header_in.start == NULL) {
|
|
|
885 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
886 if (u->header_in.start == NULL) {
|
|
|
887 ngx_http_upstream_finalize_request(r, u,
|
|
|
888 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
889 return;
|
|
|
890 }
|
|
|
891
|
|
|
892 u->header_in.pos = u->header_in.start;
|
|
|
893 u->header_in.last = u->header_in.start;
|
|
32
|
894 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
895 u->header_in.temporary = 1;
|
|
|
896
|
|
|
897 u->header_in.tag = u->output.tag;
|
|
|
898
|
|
58
|
899 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
900 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
901 {
|
|
|
902 ngx_http_upstream_finalize_request(r, u,
|
|
|
903 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
904 return;
|
|
|
905 }
|
|
|
906
|
|
28
|
907 #if 0
|
|
|
908 if (u->cache) {
|
|
|
909 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
910 u->header_in.last = u->header_in.pos;
|
|
|
911 }
|
|
|
912 #endif
|
|
|
913 }
|
|
|
914
|
|
126
|
915 n = u->peer.connection->recv(u->peer.connection, u->header_in.last,
|
|
|
916 u->header_in.end - u->header_in.last);
|
|
28
|
917
|
|
|
918 if (n == NGX_AGAIN) {
|
|
|
919 #if 0
|
|
|
920 ngx_add_timer(rev, u->read_timeout);
|
|
|
921 #endif
|
|
|
922
|
|
|
923 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
924 ngx_http_upstream_finalize_request(r, u,
|
|
|
925 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
926 return;
|
|
|
927 }
|
|
|
928
|
|
|
929 return;
|
|
|
930 }
|
|
|
931
|
|
|
932 if (n == 0) {
|
|
|
933 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
934 "upstream prematurely closed connection");
|
|
|
935 }
|
|
|
936
|
|
|
937 if (n == NGX_ERROR || n == 0) {
|
|
|
938 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
939 return;
|
|
|
940 }
|
|
|
941
|
|
|
942 u->header_in.last += n;
|
|
|
943
|
|
|
944 #if 0
|
|
|
945 u->valid_header_in = 0;
|
|
|
946
|
|
|
947 u->peer.cached = 0;
|
|
|
948 #endif
|
|
|
949
|
|
|
950 rc = u->process_header(r);
|
|
|
951
|
|
|
952 if (rc == NGX_AGAIN) {
|
|
|
953 #if 0
|
|
|
954 ngx_add_timer(rev, u->read_timeout);
|
|
|
955 #endif
|
|
|
956
|
|
58
|
957 if (u->header_in.pos == u->header_in.end) {
|
|
28
|
958 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
959 "upstream sent too big header");
|
|
|
960
|
|
|
961 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
962 return;
|
|
|
963 }
|
|
|
964
|
|
|
965 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
966 ngx_http_upstream_finalize_request(r, u,
|
|
|
967 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
968 return;
|
|
|
969 }
|
|
|
970
|
|
|
971 return;
|
|
|
972 }
|
|
|
973
|
|
|
974 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
975 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
976 return;
|
|
|
977 }
|
|
|
978
|
|
|
979 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
980 ngx_http_upstream_finalize_request(r, u,
|
|
|
981 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
982 return;
|
|
|
983 }
|
|
|
984
|
|
|
985 /* rc == NGX_OK */
|
|
|
986
|
|
78
|
987 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
988
|
|
|
989 if (u->peer.tries > 1
|
|
|
990 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
991 {
|
|
|
992 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
993 return;
|
|
|
994 }
|
|
|
995
|
|
|
996 #if (NGX_HTTP_CACHE)
|
|
|
997
|
|
|
998 if (u->peer.tries == 0
|
|
|
999 && u->stale
|
|
|
1000 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1001 {
|
|
|
1002 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1003 ngx_http_send_cached_response(r));
|
|
58
|
1004 return;
|
|
|
1005 }
|
|
|
1006
|
|
|
1007 #endif
|
|
|
1008 }
|
|
|
1009
|
|
78
|
1010 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
58
|
1011 && u->peer.tries > 1
|
|
|
1012 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1013 {
|
|
|
1014 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1015 return;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018
|
|
78
|
1019 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
1020 && u->conf->redirect_errors
|
|
|
1021 && r->err_ctx == NULL)
|
|
|
1022 {
|
|
|
1023 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1024
|
|
|
1025 if (clcf->error_pages) {
|
|
|
1026
|
|
|
1027 err_page = clcf->error_pages->elts;
|
|
|
1028 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1029 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1030
|
|
|
1031 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1032
|
|
|
1033 r->headers_out.www_authenticate =
|
|
|
1034 ngx_list_push(&r->headers_out.headers);
|
|
|
1035
|
|
|
1036 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1037 ngx_http_upstream_finalize_request(r, u,
|
|
|
1038 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1039 return;
|
|
|
1040 }
|
|
|
1041
|
|
126
|
1042 *r->headers_out.www_authenticate =
|
|
78
|
1043 *u->headers_in.www_authenticate;
|
|
|
1044 }
|
|
|
1045
|
|
36
|
1046 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1047 u->headers_in.status_n);
|
|
36
|
1048 return;
|
|
|
1049 }
|
|
|
1050 }
|
|
|
1051 }
|
|
|
1052 }
|
|
|
1053
|
|
64
|
1054 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1055 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1056
|
|
|
1057 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1058 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1059
|
|
|
1060 part = &r->upstream->headers_in.headers.part;
|
|
|
1061 h = part->elts;
|
|
|
1062
|
|
|
1063 for (i = 0; /* void */; i++) {
|
|
|
1064
|
|
|
1065 if (i >= part->nelts) {
|
|
|
1066 if (part->next == NULL) {
|
|
|
1067 break;
|
|
|
1068 }
|
|
126
|
1069
|
|
64
|
1070 part = part->next;
|
|
|
1071 h = part->elts;
|
|
|
1072 i = 0;
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1076
|
|
|
1077 if (hh[key].redirect
|
|
|
1078 && hh[key].name.len == h[i].key.len
|
|
|
1079 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1080 {
|
|
|
1081 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1082 ngx_http_upstream_finalize_request(r, u,
|
|
|
1083 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1084 return;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087 }
|
|
|
1088 }
|
|
|
1089
|
|
122
|
1090 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1091 args.len = 0;
|
|
|
1092 args.data = NULL;
|
|
|
1093 flags = 0;
|
|
|
1094
|
|
|
1095 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1096 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1097 return;
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1101 r->zero_in_uri = 1;
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1105 return;
|
|
|
1106 }
|
|
|
1107
|
|
28
|
1108 ngx_http_upstream_send_response(r, u);
|
|
|
1109 }
|
|
|
1110
|
|
|
1111
|
|
36
|
1112 static void
|
|
|
1113 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1114 {
|
|
58
|
1115 ngx_int_t rc;
|
|
|
1116 ngx_uint_t i, key;
|
|
|
1117 ngx_list_part_t *part;
|
|
|
1118 ngx_table_elt_t *h;
|
|
|
1119 ngx_event_pipe_t *p;
|
|
112
|
1120 ngx_pool_cleanup_t *cl;
|
|
|
1121 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1122 ngx_http_core_loc_conf_t *clcf;
|
|
|
1123 ngx_http_upstream_header_t *hh;
|
|
|
1124 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1125
|
|
|
1126 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1127 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1128
|
|
|
1129 part = &r->upstream->headers_in.headers.part;
|
|
|
1130 h = part->elts;
|
|
|
1131
|
|
|
1132 for (i = 0; /* void */; i++) {
|
|
28
|
1133
|
|
58
|
1134 if (i >= part->nelts) {
|
|
|
1135 if (part->next == NULL) {
|
|
|
1136 break;
|
|
|
1137 }
|
|
126
|
1138
|
|
58
|
1139 part = part->next;
|
|
|
1140 h = part->elts;
|
|
|
1141 i = 0;
|
|
|
1142 }
|
|
|
1143
|
|
|
1144 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1145
|
|
|
1146 if (hh[key].name.len == h[i].key.len
|
|
|
1147 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1148 {
|
|
|
1149 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1150 ngx_http_upstream_finalize_request(r, u,
|
|
|
1151 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1152 return;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 continue;
|
|
|
1156 }
|
|
|
1157
|
|
|
1158 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1159 ngx_http_upstream_finalize_request(r, u,
|
|
|
1160 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1161 return;
|
|
|
1162 }
|
|
|
1163 }
|
|
|
1164
|
|
78
|
1165 r->headers_out.status = u->headers_in.status_n;
|
|
|
1166 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1167
|
|
58
|
1168 rc = ngx_http_send_header(r);
|
|
28
|
1169
|
|
34
|
1170 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
1171 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1172 return;
|
|
|
1173 }
|
|
|
1174
|
|
|
1175 u->header_sent = 1;
|
|
|
1176
|
|
122
|
1177 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1178 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1179 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1180 clf = cl->data;
|
|
|
1181
|
|
|
1182 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1183 cl->handler(clf);
|
|
|
1184 cl->handler = NULL;
|
|
|
1185 break;
|
|
|
1186 }
|
|
|
1187 }
|
|
|
1188 }
|
|
|
1189 }
|
|
|
1190
|
|
28
|
1191 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1192
|
|
|
1193 #if 0
|
|
|
1194
|
|
|
1195 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1196 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
1197 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
1198 ngx_close_file_n " \"%s\" failed",
|
|
|
1199 u->cache->ctx.file.name.data);
|
|
|
1200 }
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 if (u->cachable) {
|
|
|
1204 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
1205
|
|
|
1206 header->expires = u->cache->ctx.expires;
|
|
|
1207 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1208 header->date = u->cache->ctx.date;
|
|
|
1209 header->length = r->headers_out.content_length_n;
|
|
|
1210 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1211
|
|
|
1212 header->key_len = u->cache->ctx.key0.len;
|
|
|
1213 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1214 header->key[header->key_len] = LF;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 #endif
|
|
|
1218
|
|
|
1219 p = &u->pipe;
|
|
|
1220
|
|
|
1221 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1222 p->output_ctx = r;
|
|
|
1223 p->tag = u->output.tag;
|
|
126
|
1224 p->bufs = u->conf->bufs;
|
|
28
|
1225 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1226 p->upstream = u->peer.connection;
|
|
|
1227 p->downstream = r->connection;
|
|
|
1228 p->pool = r->pool;
|
|
|
1229 p->log = r->connection->log;
|
|
126
|
1230
|
|
28
|
1231 p->cachable = u->cachable;
|
|
|
1232
|
|
50
|
1233 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1234 if (p->temp_file == NULL) {
|
|
28
|
1235 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1236 return;
|
|
|
1237 }
|
|
|
1238
|
|
|
1239 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
1240 p->temp_file->file.log = r->connection->log;
|
|
|
1241 p->temp_file->path = u->conf->temp_path;
|
|
|
1242 p->temp_file->pool = r->pool;
|
|
126
|
1243
|
|
28
|
1244 if (u->cachable) {
|
|
|
1245 p->temp_file->persistent = 1;
|
|
|
1246 } else {
|
|
|
1247 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1248 "to a temporary file";
|
|
|
1249 }
|
|
|
1250
|
|
|
1251 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1252 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1253
|
|
50
|
1254 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1255 if (p->preread_bufs == NULL) {
|
|
28
|
1256 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1257 return;
|
|
|
1258 }
|
|
|
1259 p->preread_bufs->buf = &u->header_in;
|
|
|
1260 p->preread_bufs->next = NULL;
|
|
|
1261 u->header_in.recycled = 1;
|
|
|
1262
|
|
|
1263 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
1264
|
|
|
1265 if (u->cachable) {
|
|
|
1266 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1267 if (p->buf_to_file == NULL) {
|
|
|
1268 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1269 return;
|
|
|
1270 }
|
|
|
1271 p->buf_to_file->pos = u->header_in.start;
|
|
|
1272 p->buf_to_file->last = u->header_in.pos;
|
|
|
1273 p->buf_to_file->temporary = 1;
|
|
|
1274 }
|
|
|
1275
|
|
|
1276 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1277 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1278 p->single_buf = 1;
|
|
|
1279 }
|
|
|
1280
|
|
|
1281 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1282 p->free_bufs = 1;
|
|
|
1283
|
|
|
1284 /*
|
|
|
1285 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
1286 * as though these bytes were read
|
|
|
1287 */
|
|
|
1288 u->header_in.last = u->header_in.pos;
|
|
|
1289
|
|
|
1290 if (u->conf->cyclic_temp_file) {
|
|
|
1291
|
|
|
1292 /*
|
|
|
1293 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1294 * because the writing a new data may interfere with sendfile()
|
|
|
1295 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1296 */
|
|
|
1297
|
|
|
1298 p->cyclic_temp_file = 1;
|
|
|
1299 r->connection->sendfile = 0;
|
|
|
1300
|
|
|
1301 } else {
|
|
|
1302 p->cyclic_temp_file = 0;
|
|
|
1303 }
|
|
|
1304
|
|
|
1305 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1306
|
|
|
1307 p->read_timeout = u->conf->read_timeout;
|
|
|
1308 p->send_timeout = clcf->send_timeout;
|
|
|
1309 p->send_lowat = clcf->send_lowat;
|
|
|
1310
|
|
58
|
1311 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1312 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1313
|
|
|
1314 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1315 }
|
|
|
1316
|
|
|
1317
|
|
36
|
1318 static void
|
|
58
|
1319 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1320 {
|
|
|
1321 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1322 }
|
|
|
1323
|
|
|
1324
|
|
|
1325 static void
|
|
36
|
1326 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1327 {
|
|
58
|
1328 ngx_event_pipe_t *p;
|
|
28
|
1329 ngx_connection_t *c;
|
|
|
1330 ngx_http_request_t *r;
|
|
|
1331 ngx_http_upstream_t *u;
|
|
|
1332
|
|
|
1333 c = ev->data;
|
|
|
1334 r = c->data;
|
|
|
1335 u = r->upstream;
|
|
|
1336
|
|
|
1337 if (ev->write) {
|
|
32
|
1338 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1339 "http upstream process downstream");
|
|
|
1340 c->log->action = "sending to client";
|
|
126
|
1341
|
|
28
|
1342 } else {
|
|
32
|
1343 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1344 "http upstream process upstream");
|
|
|
1345 c->log->action = "reading upstream";
|
|
28
|
1346 }
|
|
126
|
1347
|
|
28
|
1348 p = &u->pipe;
|
|
|
1349
|
|
|
1350 if (ev->timedout) {
|
|
|
1351 if (ev->write) {
|
|
76
|
1352 if (ev->delayed) {
|
|
|
1353
|
|
|
1354 ev->timedout = 0;
|
|
|
1355 ev->delayed = 0;
|
|
|
1356
|
|
|
1357 if (!ev->ready) {
|
|
|
1358 ngx_add_timer(ev, p->send_timeout);
|
|
|
1359
|
|
|
1360 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1361 {
|
|
|
1362 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1363 return;
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 return;
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1370 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1371 return;
|
|
|
1372 }
|
|
|
1373
|
|
|
1374 } else {
|
|
|
1375 p->downstream_error = 1;
|
|
126
|
1376 c->timedout = 1;
|
|
76
|
1377 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1378 "client timed out");
|
|
|
1379 }
|
|
28
|
1380
|
|
|
1381 } else {
|
|
126
|
1382 p->upstream_error = 1;
|
|
28
|
1383 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1384 "upstream timed out");
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 } else {
|
|
76
|
1388 if (ev->write && ev->delayed) {
|
|
|
1389 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1390 "http downstream delayed");
|
|
|
1391
|
|
|
1392 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1393 return;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 return;
|
|
|
1397 }
|
|
|
1398
|
|
28
|
1399 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1400 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1401 return;
|
|
|
1402 }
|
|
|
1403 }
|
|
126
|
1404
|
|
28
|
1405 if (u->peer.connection) {
|
|
|
1406
|
|
|
1407 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1408
|
|
|
1409 if (p->upstream_done && u->cachable) {
|
|
|
1410 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1411 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1412 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1413 return;
|
|
|
1414 }
|
|
|
1415
|
|
|
1416 } else if (p->upstream_eof && u->cachable) {
|
|
|
1417
|
|
|
1418 /* TODO: check length & update cache */
|
|
|
1419
|
|
|
1420 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1421 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1422 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1423 return;
|
|
|
1424 }
|
|
|
1425 }
|
|
|
1426
|
|
|
1427 #endif
|
|
|
1428
|
|
|
1429 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1430 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1431 "http upstream exit: %p", p->out);
|
|
28
|
1432 #if 0
|
|
|
1433 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1434 #endif
|
|
|
1435 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1436 return;
|
|
|
1437 }
|
|
|
1438 }
|
|
|
1439
|
|
|
1440 if (p->downstream_error) {
|
|
32
|
1441 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1442 "http upstream downstream error");
|
|
28
|
1443
|
|
|
1444 if (!u->cachable && u->peer.connection) {
|
|
|
1445 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1446 }
|
|
|
1447 }
|
|
|
1448 }
|
|
|
1449
|
|
|
1450
|
|
36
|
1451 static void
|
|
|
1452 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1453 {
|
|
|
1454 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1455 "http upstream dummy handler");
|
|
|
1456 }
|
|
|
1457
|
|
|
1458
|
|
36
|
1459 static void
|
|
|
1460 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1461 ngx_uint_t ft_type)
|
|
28
|
1462 {
|
|
74
|
1463 ngx_uint_t status, down;
|
|
28
|
1464
|
|
|
1465 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1466 "http next upstream, %xD", ft_type);
|
|
|
1467
|
|
|
1468 #if 0
|
|
|
1469 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1470 #endif
|
|
|
1471
|
|
74
|
1472 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1473 down = 0;
|
|
|
1474 } else {
|
|
|
1475 down = 1;
|
|
28
|
1476 }
|
|
74
|
1477
|
|
|
1478 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1479
|
|
28
|
1480 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1481 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1482 "upstream timed out");
|
|
|
1483 }
|
|
126
|
1484
|
|
28
|
1485 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1486 status = 0;
|
|
|
1487
|
|
|
1488 } else {
|
|
|
1489 switch(ft_type) {
|
|
|
1490
|
|
|
1491 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1492 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1493 break;
|
|
|
1494
|
|
|
1495 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1496 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1497 break;
|
|
|
1498
|
|
|
1499 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1500 status = NGX_HTTP_NOT_FOUND;
|
|
|
1501 break;
|
|
|
1502
|
|
|
1503 /*
|
|
|
1504 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1505 * never reach here
|
|
|
1506 */
|
|
|
1507
|
|
|
1508 default:
|
|
|
1509 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1510 }
|
|
|
1511 }
|
|
|
1512
|
|
118
|
1513 if (r->connection->closed) {
|
|
28
|
1514 ngx_http_upstream_finalize_request(r, u,
|
|
|
1515 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1516 return;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 if (status) {
|
|
|
1520 u->state->status = status;
|
|
|
1521
|
|
74
|
1522 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1523
|
|
|
1524 #if (NGX_HTTP_CACHE)
|
|
|
1525
|
|
|
1526 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1527 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1528 ngx_http_send_cached_response(r));
|
|
28
|
1529 return;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 #endif
|
|
|
1533
|
|
|
1534 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1535 return;
|
|
|
1536 }
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 if (u->peer.connection) {
|
|
|
1540 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1541 "close http upstream connection: %d",
|
|
|
1542 u->peer.connection->fd);
|
|
126
|
1543 #if (NGX_HTTP_SSL)
|
|
|
1544 if (u->peer.connection->ssl) {
|
|
|
1545 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1546 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1547 }
|
|
|
1548 #endif
|
|
28
|
1549 ngx_close_connection(u->peer.connection);
|
|
|
1550 }
|
|
|
1551
|
|
|
1552 #if 0
|
|
|
1553 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1554 ngx_http_upstream_busy_lock(p);
|
|
|
1555 return;
|
|
|
1556 }
|
|
|
1557 #endif
|
|
|
1558
|
|
|
1559 ngx_http_upstream_connect(r, u);
|
|
|
1560 }
|
|
|
1561
|
|
|
1562
|
|
36
|
1563 static void
|
|
118
|
1564 ngx_http_upstream_cleanup(void *data)
|
|
|
1565 {
|
|
|
1566 ngx_http_request_t *r = data;
|
|
|
1567
|
|
|
1568 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1569 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1570
|
|
|
1571 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1572 }
|
|
|
1573
|
|
|
1574
|
|
|
1575 static void
|
|
36
|
1576 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1577 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1578 {
|
|
112
|
1579 ngx_time_t *tp;
|
|
|
1580
|
|
32
|
1581 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1582 "finalize http upstream request: %i", rc);
|
|
28
|
1583
|
|
118
|
1584 *u->cleanup = NULL;
|
|
|
1585
|
|
112
|
1586 if (u->state->response_time) {
|
|
|
1587 tp = ngx_timeofday();
|
|
|
1588 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1589 - u->state->response_time;
|
|
|
1590 }
|
|
|
1591
|
|
28
|
1592 u->finalize_request(r, rc);
|
|
|
1593
|
|
|
1594 if (u->peer.connection) {
|
|
|
1595 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1596 "close http upstream connection: %d",
|
|
|
1597 u->peer.connection->fd);
|
|
126
|
1598 #if (NGX_HTTP_SSL)
|
|
|
1599
|
|
|
1600 /* TODO: do not shutdown persistent connection */
|
|
|
1601
|
|
|
1602 if (u->peer.connection->ssl) {
|
|
|
1603 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1604 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1605 }
|
|
|
1606 #endif
|
|
28
|
1607 ngx_close_connection(u->peer.connection);
|
|
|
1608 }
|
|
|
1609
|
|
32
|
1610 u->peer.connection = NULL;
|
|
|
1611
|
|
112
|
1612 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1613 {
|
|
|
1614 rc = 0;
|
|
|
1615 }
|
|
|
1616
|
|
30
|
1617 if (u->pipe.temp_file) {
|
|
28
|
1618 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1619 "http upstream temp fd: %d",
|
|
|
1620 u->pipe.temp_file->file.fd);
|
|
|
1621 }
|
|
|
1622
|
|
|
1623 #if 0
|
|
|
1624 if (u->cache) {
|
|
|
1625 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1626 "http upstream cache fd: %d",
|
|
28
|
1627 u->cache->ctx.file.fd);
|
|
|
1628 }
|
|
|
1629 #endif
|
|
|
1630
|
|
58
|
1631 r->log_handler = u->saved_log_handler;
|
|
64
|
1632
|
|
|
1633 if (rc == NGX_DECLINED) {
|
|
|
1634 return;
|
|
|
1635 }
|
|
|
1636
|
|
32
|
1637 r->connection->log->action = "sending to client";
|
|
|
1638
|
|
102
|
1639 if (rc == 0 && r->main == r) {
|
|
28
|
1640 rc = ngx_http_send_last(r);
|
|
|
1641 }
|
|
|
1642
|
|
|
1643 ngx_http_finalize_request(r, rc);
|
|
|
1644 }
|
|
|
1645
|
|
|
1646
|
|
126
|
1647 #if (NGX_HTTP_SSL)
|
|
|
1648
|
|
|
1649 static void
|
|
|
1650 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1651 {
|
|
|
1652 /* lock peer mutex */
|
|
|
1653
|
|
|
1654 if (peer->ssl_session) {
|
|
|
1655 ngx_ssl_free_session(peer->ssl_session);
|
|
|
1656 }
|
|
|
1657
|
|
|
1658 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
1659
|
|
|
1660 /* unlock peer mutex */
|
|
|
1661
|
|
|
1662 /*
|
|
|
1663 * We send the "close notify" shutdown alert to the upstream only
|
|
|
1664 * and do not wait its "close notify" shutdown alert.
|
|
|
1665 * It is acceptable according to the TLS standard.
|
|
|
1666 */
|
|
|
1667
|
|
|
1668 c->ssl->no_wait_shutdown = 1;
|
|
|
1669
|
|
|
1670 (void) ngx_ssl_shutdown(c);
|
|
|
1671 }
|
|
|
1672
|
|
|
1673 #endif
|
|
|
1674
|
|
|
1675
|
|
58
|
1676 static ngx_int_t
|
|
|
1677 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1678 ngx_uint_t offset)
|
|
126
|
1679 {
|
|
58
|
1680 ngx_table_elt_t **ph;
|
|
126
|
1681
|
|
58
|
1682 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1683
|
|
|
1684 if (*ph == NULL) {
|
|
|
1685 *ph = h;
|
|
|
1686 }
|
|
|
1687
|
|
|
1688 return NGX_OK;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691
|
|
|
1692 static ngx_int_t
|
|
|
1693 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
1694 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1695 {
|
|
|
1696 ngx_array_t *pa;
|
|
|
1697 ngx_table_elt_t **ph;
|
|
|
1698
|
|
|
1699 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
1700
|
|
|
1701 if (pa->elts == NULL) {
|
|
|
1702 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1703 {
|
|
|
1704 return NGX_ERROR;
|
|
|
1705 }
|
|
|
1706 }
|
|
|
1707
|
|
|
1708 ph = ngx_array_push(pa);
|
|
|
1709 if (ph == NULL) {
|
|
|
1710 return NGX_ERROR;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 *ph = h;
|
|
|
1714
|
|
|
1715 return NGX_OK;
|
|
|
1716 }
|
|
|
1717
|
|
|
1718
|
|
|
1719 static ngx_int_t
|
|
|
1720 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1721 ngx_uint_t offset)
|
|
|
1722 {
|
|
|
1723 return NGX_OK;
|
|
|
1724 }
|
|
|
1725
|
|
|
1726
|
|
|
1727 static ngx_int_t
|
|
76
|
1728 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1729 ngx_uint_t offset)
|
|
126
|
1730 {
|
|
76
|
1731 ngx_int_t n;
|
|
|
1732
|
|
|
1733 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
1734
|
|
|
1735 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
1736
|
|
|
1737 if (n != NGX_ERROR) {
|
|
|
1738 r->limit_rate = (size_t) n;
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 return NGX_OK;
|
|
|
1742 }
|
|
|
1743
|
|
|
1744
|
|
|
1745 static ngx_int_t
|
|
58
|
1746 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1747 ngx_uint_t offset)
|
|
|
1748 {
|
|
122
|
1749 ngx_table_elt_t *ho, **ph;
|
|
58
|
1750
|
|
|
1751 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1752 if (ho == NULL) {
|
|
|
1753 return NGX_ERROR;
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 *ho = *h;
|
|
|
1757
|
|
122
|
1758 if (offset) {
|
|
|
1759 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
1760 *ph = ho;
|
|
|
1761 }
|
|
|
1762
|
|
58
|
1763 return NGX_OK;
|
|
|
1764 }
|
|
|
1765
|
|
|
1766
|
|
|
1767 static ngx_int_t
|
|
|
1768 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
1769 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1770 {
|
|
|
1771 ngx_flag_t *f;
|
|
|
1772 ngx_table_elt_t *ho;
|
|
|
1773
|
|
|
1774 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
1775
|
|
|
1776 if (*f == 0) {
|
|
|
1777 return NGX_OK;
|
|
|
1778 }
|
|
|
1779
|
|
|
1780 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1781 if (ho == NULL) {
|
|
|
1782 return NGX_ERROR;
|
|
|
1783 }
|
|
|
1784
|
|
|
1785 *ho = *h;
|
|
|
1786
|
|
|
1787 return NGX_OK;
|
|
|
1788 }
|
|
|
1789
|
|
|
1790
|
|
|
1791 static ngx_int_t
|
|
|
1792 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
1793 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1794 {
|
|
|
1795 ngx_array_t *pa;
|
|
|
1796 ngx_table_elt_t *ho, **ph;
|
|
|
1797
|
|
|
1798 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
1799
|
|
|
1800 if (pa->elts == NULL) {
|
|
|
1801 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1802 {
|
|
|
1803 return NGX_ERROR;
|
|
|
1804 }
|
|
|
1805 }
|
|
|
1806
|
|
|
1807 ph = ngx_array_push(pa);
|
|
|
1808 if (ph == NULL) {
|
|
|
1809 return NGX_ERROR;
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1813 if (ho == NULL) {
|
|
|
1814 return NGX_ERROR;
|
|
|
1815 }
|
|
|
1816
|
|
|
1817 *ho = *h;
|
|
|
1818 *ph = ho;
|
|
|
1819
|
|
|
1820 return NGX_OK;
|
|
|
1821 }
|
|
|
1822
|
|
|
1823
|
|
|
1824 static ngx_int_t
|
|
|
1825 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1826 ngx_uint_t offset)
|
|
|
1827 {
|
|
|
1828 r->headers_out.content_type = h->value;
|
|
|
1829
|
|
|
1830 return NGX_OK;
|
|
|
1831 }
|
|
|
1832
|
|
|
1833
|
|
|
1834 static ngx_int_t
|
|
|
1835 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1836 ngx_uint_t offset)
|
|
|
1837 {
|
|
|
1838 ngx_table_elt_t *ho;
|
|
|
1839
|
|
|
1840 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1841 if (ho == NULL) {
|
|
|
1842 return NGX_ERROR;
|
|
|
1843 }
|
|
|
1844
|
|
|
1845 *ho = *h;
|
|
|
1846
|
|
|
1847 r->headers_out.content_length = ho;
|
|
|
1848 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
1849
|
|
|
1850 return NGX_OK;
|
|
|
1851 }
|
|
|
1852
|
|
|
1853
|
|
|
1854 static ngx_int_t
|
|
|
1855 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1856 ngx_uint_t offset)
|
|
|
1857 {
|
|
|
1858 ngx_int_t rc;
|
|
|
1859 ngx_table_elt_t *ho;
|
|
|
1860
|
|
|
1861 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1862 if (ho == NULL) {
|
|
|
1863 return NGX_ERROR;
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 *ho = *h;
|
|
|
1867
|
|
|
1868 if (r->upstream->rewrite_redirect) {
|
|
|
1869 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
1870
|
|
78
|
1871 if (rc == NGX_DECLINED) {
|
|
|
1872 return NGX_OK;
|
|
|
1873 }
|
|
|
1874
|
|
58
|
1875 if (rc == NGX_OK) {
|
|
|
1876 r->headers_out.location = ho;
|
|
|
1877
|
|
|
1878 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1879 "rewritten location: \"%V\"", &ho->value);
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 return rc;
|
|
|
1883 }
|
|
|
1884
|
|
|
1885 /*
|
|
|
1886 * we do not set r->headers_out.location here to avoid the handling
|
|
|
1887 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
1888 */
|
|
|
1889
|
|
|
1890 return NGX_OK;
|
|
|
1891 }
|
|
|
1892
|
|
|
1893
|
|
|
1894 static ngx_int_t
|
|
|
1895 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
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1896 ngx_uint_t offset)
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|
1897 {
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|
1898 u_char *p;
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1899 ngx_int_t rc;
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1900 ngx_table_elt_t *ho;
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|
1901
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1902 ho = ngx_list_push(&r->headers_out.headers);
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1903 if (ho == NULL) {
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|
1904 return NGX_ERROR;
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|
1905 }
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|
1906
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|
1907 *ho = *h;
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1908
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|
1909 if (r->upstream->rewrite_redirect) {
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1910
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1911 p = (u_char *) ngx_strstr(ho->value.data, "url=");
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1912
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1913 if (p) {
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1914 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
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1915
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1916 } else {
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|
1917 return NGX_OK;
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1918 }
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1919
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78
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1920 if (rc == NGX_DECLINED) {
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|
1921 return NGX_OK;
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|
1922 }
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1923
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58
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1924 #if (NGX_DEBUG)
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1925 if (rc == NGX_OK) {
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|
1926 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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1927 "rewritten refresh: \"%V\"", &ho->value);
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|
1928 }
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|
1929 #endif
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1930
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1931 return rc;
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1932 }
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1933
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1934 return NGX_OK;
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1935 }
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1936
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1937
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1938 #if (NGX_HTTP_GZIP)
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1939
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1940 static ngx_int_t
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1941 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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1942 ngx_table_elt_t *h, ngx_uint_t offset)
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1943 {
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1944 ngx_table_elt_t *ho;
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1945
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1946 ho = ngx_list_push(&r->headers_out.headers);
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1947 if (ho == NULL) {
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1948 return NGX_ERROR;
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1949 }
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1950
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1951 *ho = *h;
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1952
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1953 r->headers_out.content_encoding = ho;
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1954
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1955 return NGX_OK;
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1956 }
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1957
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1958 #endif
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1959
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1960
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36
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1961 static size_t
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1962 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
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28
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1963 {
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1964 if (r->upstream) {
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1965 return r->upstream->states.nelts * (3 + 2);
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1966 }
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1967
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1968 return 1;
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1969 }
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1970
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1971
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36
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1972 static u_char *
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1973 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
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1974 ngx_http_log_op_t *op)
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28
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1975 {
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1976 ngx_uint_t i;
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1977 ngx_http_upstream_t *u;
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1978 ngx_http_upstream_state_t *state;
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1979
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1980 u = r->upstream;
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1981
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122
|
1982 if (u == NULL || u->states.nelts == 0) {
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28
|
1983 *buf = '-';
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1984 return buf + 1;
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1985 }
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1986
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|
1987 i = 0;
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1988 state = u->states.elts;
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1989
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1990 for ( ;; ) {
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1991 if (state[i].status == 0) {
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|
1992 *buf++ = '-';
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1993
|
|
|
1994 } else {
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1995 buf = ngx_sprintf(buf, "%ui", state[i].status);
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1996 }
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1997
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1998 if (++i == u->states.nelts) {
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1999 return buf;
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|
|
2000 }
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|
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2001
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|
|
2002 *buf++ = ',';
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|
|
2003 *buf++ = ' ';
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|
|
2004 }
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|
|
2005 }
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|
|
2006
|
|
|
2007
|
|
122
|
2008 static size_t
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2009 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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|
2010 uintptr_t data)
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|
2011 {
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|
2012 if (r->upstream) {
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|
2013 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
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|
|
2014 }
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|
2015
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|
2016 return 1;
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|
|
2017 }
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|
|
2018
|
|
|
2019
|
|
58
|
2020 static u_char *
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|
112
|
2021 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
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|
|
2022 ngx_http_log_op_t *op)
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|
|
2023 {
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|
|
2024 ngx_uint_t i;
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|
|
2025 ngx_http_upstream_t *u;
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|
|
2026 ngx_http_upstream_state_t *state;
|
|
|
2027
|
|
|
2028 u = r->upstream;
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|
|
2029
|
|
122
|
2030 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2031 *buf = '-';
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|
|
2032 return buf + 1;
|
|
|
2033 }
|
|
|
2034
|
|
|
2035 i = 0;
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|
|
2036 state = u->states.elts;
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|
|
2037
|
|
|
2038 for ( ;; ) {
|
|
|
2039 if (state[i].status == 0) {
|
|
|
2040 *buf++ = '-';
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|
|
2041
|
|
|
2042 } else {
|
|
|
2043 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2044 state[i].response_time / 1000,
|
|
|
2045 state[i].response_time % 1000);
|
|
|
2046 }
|
|
|
2047
|
|
|
2048 if (++i == u->states.nelts) {
|
|
|
2049 return buf;
|
|
|
2050 }
|
|
|
2051
|
|
|
2052 *buf++ = ',';
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|
|
2053 *buf++ = ' ';
|
|
|
2054 }
|
|
|
2055 }
|
|
|
2056
|
|
|
2057
|
|
|
2058 static u_char *
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|
58
|
2059 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2060 {
|
|
|
2061 u_char *p;
|
|
|
2062 ngx_http_upstream_t *u;
|
|
|
2063 ngx_peer_connection_t *peer;
|
|
|
2064
|
|
|
2065 u = r->upstream;
|
|
|
2066 peer = &u->peer;
|
|
|
2067
|
|
|
2068 p = ngx_snprintf(buf, len,
|
|
58
|
2069 ", server: %V, URL: \"%V\","
|
|
118
|
2070 " upstream: \"%V%V%s%V\"",
|
|
52
|
2071 &r->server_name,
|
|
28
|
2072 &r->unparsed_uri,
|
|
58
|
2073 &u->conf->schema,
|
|
28
|
2074 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2075 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2076 &u->uri);
|
|
28
|
2077 len -= p - buf;
|
|
|
2078 buf = p;
|
|
|
2079
|
|
54
|
2080 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2081 }
|
|
|
2082
|
|
|
2083
|
|
36
|
2084 static ngx_int_t
|
|
122
|
2085 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2086 {
|
|
122
|
2087 ngx_http_variable_t *var, *v;
|
|
28
|
2088 ngx_http_log_op_name_t *op;
|
|
|
2089
|
|
122
|
2090 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2091 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2092 if (var == NULL) {
|
|
|
2093 return NGX_ERROR;
|
|
|
2094 }
|
|
|
2095
|
|
|
2096 var->handler = v->handler;
|
|
|
2097 var->data = v->data;
|
|
|
2098 }
|
|
|
2099
|
|
28
|
2100 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2101 op->run = NULL;
|
|
|
2102
|
|
|
2103 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2104 if (op->name.len == 0) {
|
|
|
2105 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2106 }
|
|
|
2107 }
|
|
|
2108
|
|
|
2109 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2110
|
|
|
2111 return NGX_OK;
|
|
|
2112 }
|
|
58
|
2113
|
|
|
2114
|
|
122
|
2115 static ngx_int_t
|
|
|
2116 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2117 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2118 {
|
|
|
2119 u_char *p;
|
|
|
2120 size_t len;
|
|
|
2121 ngx_uint_t i;
|
|
|
2122 ngx_http_upstream_t *u;
|
|
|
2123 ngx_http_upstream_state_t *state;
|
|
|
2124
|
|
|
2125 v->valid = 1;
|
|
|
2126 v->no_cachable = 0;
|
|
|
2127 v->not_found = 0;
|
|
|
2128
|
|
|
2129 u = r->upstream;
|
|
|
2130
|
|
|
2131 if (u == NULL || u->states.nelts == 0) {
|
|
|
2132 v->not_found = 1;
|
|
|
2133 return NGX_OK;
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 len = u->states.nelts * (3 + 2);
|
|
|
2137
|
|
|
2138 p = ngx_palloc(r->pool, len);
|
|
|
2139 if (p == NULL) {
|
|
|
2140 return NGX_ERROR;
|
|
|
2141 }
|
|
|
2142
|
|
|
2143 v->data = p;
|
|
|
2144
|
|
|
2145 i = 0;
|
|
|
2146 state = u->states.elts;
|
|
|
2147
|
|
|
2148 for ( ;; ) {
|
|
|
2149 if (state[i].status == 0) {
|
|
|
2150 *p++ = '-';
|
|
|
2151
|
|
|
2152 } else {
|
|
|
2153 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2154 }
|
|
|
2155
|
|
|
2156 if (++i == u->states.nelts) {
|
|
|
2157 break;
|
|
|
2158 }
|
|
|
2159
|
|
|
2160 *p++ = ',';
|
|
|
2161 *p++ = ' ';
|
|
|
2162 }
|
|
|
2163
|
|
|
2164 v->len = p - v->data;
|
|
|
2165
|
|
|
2166 return NGX_OK;
|
|
|
2167 }
|
|
|
2168
|
|
|
2169
|
|
|
2170 static ngx_int_t
|
|
|
2171 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2172 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2173 {
|
|
|
2174 u_char *p;
|
|
|
2175 size_t len;
|
|
|
2176 ngx_uint_t i;
|
|
|
2177 ngx_http_upstream_t *u;
|
|
|
2178 ngx_http_upstream_state_t *state;
|
|
|
2179
|
|
|
2180 v->valid = 1;
|
|
|
2181 v->no_cachable = 0;
|
|
|
2182 v->not_found = 0;
|
|
|
2183
|
|
|
2184 u = r->upstream;
|
|
|
2185
|
|
|
2186 if (u == NULL || u->states.nelts == 0) {
|
|
|
2187 v->not_found = 1;
|
|
|
2188 return NGX_OK;
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2192
|
|
|
2193 p = ngx_palloc(r->pool, len);
|
|
|
2194 if (p == NULL) {
|
|
|
2195 return NGX_ERROR;
|
|
|
2196 }
|
|
|
2197
|
|
|
2198 v->data = p;
|
|
|
2199
|
|
|
2200 i = 0;
|
|
|
2201 state = u->states.elts;
|
|
|
2202
|
|
|
2203 for ( ;; ) {
|
|
|
2204 if (state[i].status == 0) {
|
|
|
2205 *p++ = '-';
|
|
|
2206
|
|
|
2207 } else {
|
|
|
2208 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2209 state[i].response_time / 1000,
|
|
|
2210 state[i].response_time % 1000);
|
|
|
2211 }
|
|
|
2212
|
|
|
2213 if (++i == u->states.nelts) {
|
|
|
2214 break;
|
|
|
2215 }
|
|
|
2216
|
|
|
2217 *p++ = ',';
|
|
|
2218 *p++ = ' ';
|
|
|
2219 }
|
|
|
2220
|
|
|
2221 v->len = p - v->data;
|
|
|
2222
|
|
|
2223 return NGX_OK;
|
|
|
2224 }
|
|
|
2225
|
|
|
2226
|
|
58
|
2227 static void *
|
|
|
2228 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2229 {
|
|
|
2230 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2231
|
|
|
2232 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2233 if (umcf == NULL) {
|
|
|
2234 return NULL;
|
|
|
2235 }
|
|
|
2236
|
|
|
2237 return umcf;
|
|
|
2238 }
|
|
|
2239
|
|
|
2240
|
|
|
2241 static char *
|
|
|
2242 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
2243 {
|
|
|
2244 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2245
|
|
126
|
2246 umcf->headers_in_hash.max_size = 100;
|
|
58
|
2247 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
2248 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
2249 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
2250
|
|
|
2251 if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
|
|
|
2252 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
2253 {
|
|
|
2254 return NGX_CONF_ERROR;
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
2258 "http upstream headers_in hash size: %ui, "
|
|
|
2259 "max buckets per entry: %ui",
|
|
|
2260 umcf->headers_in_hash.hash_size,
|
|
|
2261 umcf->headers_in_hash.min_buckets);
|
|
|
2262
|
|
|
2263 return NGX_CONF_OK;
|
|
|
2264 }
|
