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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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58
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12 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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13 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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15 ngx_event_t *ev);
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28
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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17 ngx_http_upstream_t *u);
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58
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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19 ngx_http_upstream_t *u);
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28
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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21 ngx_http_upstream_t *u);
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28
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22 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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23 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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24 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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25 ngx_http_upstream_t *u);
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130
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26 static void
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27 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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28 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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29 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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30 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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31 ssize_t bytes);
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58
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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33 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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34 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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35 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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37 static void ngx_http_upstream_cleanup(void *data);
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28
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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40
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58
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41 static ngx_int_t ngx_http_upstream_process_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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43 static ngx_int_t
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44 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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45 ngx_table_elt_t *h, ngx_uint_t offset);
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46 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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48 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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50 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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52 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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53 ngx_table_elt_t *h, ngx_uint_t offset);
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54 static ngx_int_t
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55 ngx_http_upstream_copy_multi_header_lines(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_copy_content_type(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_copy_content_length(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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63 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 #if (NGX_HTTP_GZIP)
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66 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 #endif
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69
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28
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70 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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71 uintptr_t data);
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72 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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73 u_char *buf, ngx_http_log_op_t *op);
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122
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74 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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75 uintptr_t data);
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112
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76 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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77 u_char *buf, ngx_http_log_op_t *op);
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28
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78
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58
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79 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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80 size_t len);
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122
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81
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82 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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83 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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84 ngx_http_variable_value_t *v, uintptr_t data);
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85 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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86 ngx_http_variable_value_t *v, uintptr_t data);
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87
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58
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88 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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89 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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90
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126
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91 #if (NGX_HTTP_SSL)
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140
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92 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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93 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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94 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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95 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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96 ngx_peer_t *peer);
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97 #endif
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98
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58
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99
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100 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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101
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102 { ngx_string("Status"),
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103 ngx_http_upstream_process_header_line,
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104 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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105 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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106
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107 { ngx_string("Content-Type"),
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108 ngx_http_upstream_process_header_line,
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109 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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110 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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111
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112 { ngx_string("Content-Length"),
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113 ngx_http_upstream_process_header_line,
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114 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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115 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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116
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117 { ngx_string("Date"),
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118 ngx_http_upstream_process_header_line,
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119 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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120 ngx_http_upstream_copy_header_line,
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121 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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122
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123 { ngx_string("Server"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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126 ngx_http_upstream_copy_header_line,
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127 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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128
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78
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129 { ngx_string("WWW-Authenticate"),
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130 ngx_http_upstream_process_header_line,
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131 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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132 ngx_http_upstream_copy_header_line, 0, 0 },
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133
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58
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134 { ngx_string("Location"),
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135 ngx_http_upstream_ignore_header_line, 0,
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64
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136 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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137
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138 { ngx_string("Refresh"),
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139 ngx_http_upstream_ignore_header_line, 0,
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64
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140 ngx_http_upstream_rewrite_refresh, 0, 0 },
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141
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142 { ngx_string("Set-Cookie"),
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143 ngx_http_upstream_ignore_header_line, 0,
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80
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144 ngx_http_upstream_copy_header_line, 0, 1 },
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145
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146 { ngx_string("Content-Disposition"),
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147 ngx_http_upstream_ignore_header_line, 0,
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148 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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149
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150 { ngx_string("Cache-Control"),
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151 ngx_http_upstream_process_multi_header_lines,
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152 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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153 ngx_http_upstream_copy_multi_header_lines,
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64
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154 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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155
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122
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156 { ngx_string("Expires"),
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, expires),
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159 ngx_http_upstream_copy_header_line,
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160 offsetof(ngx_http_headers_out_t, expires), 1 },
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161
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126
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162 { ngx_string("Accept-Ranges"),
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163 ngx_http_upstream_process_header_line,
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164 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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165 ngx_http_upstream_copy_header_line,
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166 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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167
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58
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168 { ngx_string("Connection"),
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169 ngx_http_upstream_ignore_header_line, 0,
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64
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170 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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171
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190
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172 { ngx_string("Keep-Alive"),
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173 ngx_http_upstream_ignore_header_line, 0,
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174 ngx_http_upstream_ignore_header_line, 0, 0 },
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175
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58
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176 { ngx_string("X-Powered-By"),
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177 ngx_http_upstream_ignore_header_line, 0,
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198
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178 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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179
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180 { ngx_string("X-Accel-Expires"),
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181 ngx_http_upstream_process_header_line,
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182 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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183 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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184
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185 { ngx_string("X-Accel-Redirect"),
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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188 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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189
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76
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190 { ngx_string("X-Accel-Limit-Rate"),
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191 ngx_http_upstream_process_limit_rate, 0,
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192 ngx_http_upstream_ignore_header_line, 0, 0 },
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193
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198
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194 { ngx_string("X-Accel-Buffering"),
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195 ngx_http_upstream_process_buffering, 0,
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196 ngx_http_upstream_ignore_header_line, 0, 0 },
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197
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58
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198 #if (NGX_HTTP_GZIP)
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199 { ngx_string("Content-Encoding"),
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200 ngx_http_upstream_process_header_line,
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201 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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202 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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203 #endif
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204
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64
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205 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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206 };
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28
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207
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208
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209 ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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210 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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211 NULL, /* postconfiguration */
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212
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213 ngx_http_upstream_create_main_conf, /* create main configuration */
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214 ngx_http_core_init_main_conf, /* init main configuration */
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28
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215
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216 NULL, /* create server configuration */
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217 NULL, /* merge server configuration */
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218
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219 NULL, /* create location configuration */
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220 NULL /* merge location configuration */
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221 };
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126
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222
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28
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223
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224 ngx_module_t ngx_http_upstream_module = {
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58
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225 NGX_MODULE_V1,
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28
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226 &ngx_http_upstream_module_ctx, /* module context */
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227 NULL, /* module directives */
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228 NGX_HTTP_MODULE, /* module type */
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90
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229 NULL, /* init master */
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28
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230 NULL, /* init module */
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90
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231 NULL, /* init process */
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232 NULL, /* init thread */
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233 NULL, /* exit thread */
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234 NULL, /* exit process */
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235 NULL, /* exit master */
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236 NGX_MODULE_V1_PADDING
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28
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237 };
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238
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239
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132
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240 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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241 { ngx_string("upstream_status"), 0, NULL,
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122
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242 ngx_http_upstream_log_status_getlen,
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243 ngx_http_upstream_log_status },
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244 { ngx_string("upstream_response_time"), 0, NULL,
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245 ngx_http_upstream_log_response_time_getlen,
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246 ngx_http_upstream_log_response_time },
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28
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247 { ngx_null_string, 0, NULL, NULL, NULL }
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248 };
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249
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250
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122
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251 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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252
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186
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253 { ngx_string("upstream_status"), NULL,
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132
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254 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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255
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186
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256 { ngx_string("upstream_response_time"), NULL,
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132
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257 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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258
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186
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259 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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260 };
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261
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262
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36
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263 void
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264 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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265 {
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112
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266 ngx_time_t *tp;
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58
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267 ngx_connection_t *c;
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118
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268 ngx_http_cleanup_t *cln;
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58
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269 ngx_http_upstream_t *u;
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270 ngx_http_core_loc_conf_t *clcf;
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28
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271
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272 c = r->connection;
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273
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274 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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275 "http init upstream, client timer: %d", c->read->timer_set);
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276
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277 if (c->read->timer_set) {
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278 ngx_del_timer(c->read);
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279 }
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280
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178
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281 u = r->upstream;
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282
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283 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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284 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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285 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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286 }
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126
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287
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28
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288 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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289
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290 if (!c->write->active) {
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80
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291 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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292 == NGX_ERROR)
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28
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293 {
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294 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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295 return;
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296 }
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297 }
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298 }
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299
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86
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300 if (r->request_body) {
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301 u->request_bufs = r->request_body->bufs;
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302 }
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58
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303
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86
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304 if (u->create_request(r) != NGX_OK) {
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28
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305 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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306 return;
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307 }
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308
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309 u->peer.log = r->connection->log;
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58
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310 u->saved_log_handler = r->log_handler;
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311 r->log_handler = ngx_http_upstream_log_error;
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312
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313 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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314
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315 u->output.sendfile = r->connection->sendfile;
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316 u->output.pool = r->pool;
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317 u->output.bufs.num = 1;
|
|
58
|
318 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
319 u->output.output_filter = ngx_chain_writer;
|
|
|
320 u->output.filter_ctx = &u->writer;
|
|
|
321
|
|
|
322 u->writer.pool = r->pool;
|
|
|
323
|
|
|
324 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
325 sizeof(ngx_http_upstream_state_t))
|
|
|
326 != NGX_OK)
|
|
28
|
327 {
|
|
|
328 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
329 return;
|
|
|
330 }
|
|
|
331
|
|
50
|
332 u->state = ngx_array_push(&u->states);
|
|
|
333 if (u->state == NULL) {
|
|
28
|
334 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
335 return;
|
|
|
336 }
|
|
|
337
|
|
|
338 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
339
|
|
112
|
340 tp = ngx_timeofday();
|
|
|
341
|
|
|
342 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
343
|
|
142
|
344 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
345 if (cln == NULL) {
|
|
|
346 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
347 return;
|
|
|
348 }
|
|
|
349
|
|
|
350 cln->handler = ngx_http_upstream_cleanup;
|
|
|
351 cln->data = r;
|
|
|
352 u->cleanup = &cln->handler;
|
|
|
353
|
|
28
|
354 ngx_http_upstream_connect(r, u);
|
|
|
355 }
|
|
|
356
|
|
|
357
|
|
36
|
358 static void
|
|
58
|
359 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
360 {
|
|
|
361 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
362 }
|
|
|
363
|
|
|
364
|
|
|
365 static void
|
|
|
366 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
367 {
|
|
|
368 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
369 }
|
|
|
370
|
|
|
371
|
|
|
372 static void
|
|
|
373 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
374 ngx_event_t *ev)
|
|
28
|
375 {
|
|
|
376 int n;
|
|
|
377 char buf[1];
|
|
126
|
378 ngx_err_t err;
|
|
28
|
379 ngx_connection_t *c;
|
|
|
380 ngx_http_upstream_t *u;
|
|
|
381
|
|
76
|
382 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
383 "http upstream check client, write event:%d, \"%V\"",
|
|
|
384 ev->write, &r->uri);
|
|
28
|
385
|
|
58
|
386 c = r->connection;
|
|
32
|
387 u = r->upstream;
|
|
|
388
|
|
132
|
389 if (c->error) {
|
|
76
|
390 ngx_http_upstream_finalize_request(r, u,
|
|
|
391 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
392 return;
|
|
|
393 }
|
|
|
394
|
|
32
|
395 if (u->peer.connection == NULL) {
|
|
|
396 return;
|
|
|
397 }
|
|
|
398
|
|
28
|
399 #if (NGX_HAVE_KQUEUE)
|
|
|
400
|
|
|
401 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
402
|
|
|
403 if (!ev->pending_eof) {
|
|
|
404 return;
|
|
|
405 }
|
|
|
406
|
|
|
407 ev->eof = 1;
|
|
132
|
408 c->error = 1;
|
|
28
|
409
|
|
|
410 if (ev->kq_errno) {
|
|
|
411 ev->error = 1;
|
|
|
412 }
|
|
|
413
|
|
|
414 if (!u->cachable && u->peer.connection) {
|
|
|
415 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
416 "kevent() reported that client closed prematurely "
|
|
|
417 "connection, so upstream connection is closed too");
|
|
28
|
418 ngx_http_upstream_finalize_request(r, u,
|
|
|
419 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
420 return;
|
|
|
421 }
|
|
|
422
|
|
|
423 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
424 "kevent() reported that client closed "
|
|
|
425 "prematurely connection");
|
|
|
426
|
|
|
427 if (u->peer.connection == NULL) {
|
|
|
428 ngx_http_upstream_finalize_request(r, u,
|
|
|
429 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
430 return;
|
|
|
431 }
|
|
|
432
|
|
|
433 return;
|
|
|
434 }
|
|
|
435
|
|
|
436 #endif
|
|
|
437
|
|
|
438 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
439
|
|
|
440 err = ngx_socket_errno;
|
|
|
441
|
|
|
442 /*
|
|
|
443 * we do not need to disable the write event because
|
|
|
444 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
445 */
|
|
|
446
|
|
|
447 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
448 return;
|
|
|
449 }
|
|
|
450
|
|
|
451 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
452 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
453 ngx_http_upstream_finalize_request(r, u,
|
|
|
454 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
455 return;
|
|
|
456 }
|
|
|
457 }
|
|
|
458
|
|
|
459 if (n > 0) {
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 if (n == -1) {
|
|
|
464 if (err == NGX_EAGAIN) {
|
|
|
465 return;
|
|
|
466 }
|
|
|
467
|
|
|
468 ev->error = 1;
|
|
|
469
|
|
32
|
470 } else { /* n == 0 */
|
|
28
|
471 err = 0;
|
|
|
472 }
|
|
|
473
|
|
78
|
474 ev->eof = 1;
|
|
132
|
475 c->error = 1;
|
|
78
|
476
|
|
28
|
477 if (!u->cachable && u->peer.connection) {
|
|
|
478 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
479 "client closed prematurely connection, "
|
|
|
480 "so upstream connection is closed too");
|
|
|
481 ngx_http_upstream_finalize_request(r, u,
|
|
|
482 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
483 return;
|
|
|
484 }
|
|
|
485
|
|
|
486 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
487 "client closed prematurely connection");
|
|
|
488
|
|
|
489 if (u->peer.connection == NULL) {
|
|
|
490 ngx_http_upstream_finalize_request(r, u,
|
|
|
491 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
492 return;
|
|
|
493 }
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
36
|
497 static void
|
|
|
498 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
499 {
|
|
140
|
500 ngx_int_t rc;
|
|
|
501 ngx_connection_t *c;
|
|
28
|
502
|
|
32
|
503 r->connection->log->action = "connecting to upstream";
|
|
28
|
504
|
|
|
505 r->connection->single_connection = 0;
|
|
|
506
|
|
|
507 rc = ngx_event_connect_peer(&u->peer);
|
|
|
508
|
|
|
509 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
510 "http upstream connect: %i", rc);
|
|
|
511
|
|
|
512 if (rc == NGX_ERROR) {
|
|
|
513 ngx_http_upstream_finalize_request(r, u,
|
|
|
514 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
515 return;
|
|
|
516 }
|
|
|
517
|
|
140
|
518 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
519
|
|
92
|
520 if (rc == NGX_BUSY) {
|
|
|
521 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
522 }
|
|
|
523
|
|
|
524 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
525 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
526 return;
|
|
|
527 }
|
|
|
528
|
|
126
|
529 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
530
|
|
28
|
531 c = u->peer.connection;
|
|
|
532
|
|
|
533 c->data = r;
|
|
140
|
534
|
|
58
|
535 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
536 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
537
|
|
|
538 c->sendfile = r->connection->sendfile;
|
|
|
539
|
|
|
540 c->pool = r->pool;
|
|
|
541 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
542
|
|
|
543 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
544
|
|
|
545 u->writer.out = NULL;
|
|
|
546 u->writer.last = &u->writer.out;
|
|
|
547 u->writer.connection = c;
|
|
|
548 u->writer.limit = 0;
|
|
|
549
|
|
|
550 if (u->request_sent) {
|
|
58
|
551 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
552 ngx_http_upstream_finalize_request(r, u,
|
|
|
553 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
554 return;
|
|
|
555 }
|
|
28
|
556 }
|
|
|
557
|
|
146
|
558 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
559
|
|
|
560 /*
|
|
|
561 * the r->request_body->buf can be reused for one request only,
|
|
|
562 * the subrequests should allocate their own temporay bufs
|
|
|
563 */
|
|
|
564
|
|
|
565 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
566 if (u->output.free == NULL) {
|
|
|
567 ngx_http_upstream_finalize_request(r, u,
|
|
|
568 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
569 return;
|
|
28
|
570 }
|
|
122
|
571
|
|
|
572 u->output.free->buf = r->request_body->buf;
|
|
|
573 u->output.free->next = NULL;
|
|
|
574 u->output.allocated = 1;
|
|
|
575
|
|
|
576 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
577 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
578 r->request_body->buf->tag = u->output.tag;
|
|
28
|
579 }
|
|
|
580
|
|
|
581 u->request_sent = 0;
|
|
|
582
|
|
|
583 if (rc == NGX_AGAIN) {
|
|
|
584 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
585 return;
|
|
|
586 }
|
|
|
587
|
|
126
|
588 #if (NGX_HTTP_SSL)
|
|
|
589
|
|
140
|
590 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
591 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
592 return;
|
|
|
593 }
|
|
|
594
|
|
|
595 #endif
|
|
|
596
|
|
28
|
597 ngx_http_upstream_send_request(r, u);
|
|
|
598 }
|
|
|
599
|
|
|
600
|
|
126
|
601 #if (NGX_HTTP_SSL)
|
|
|
602
|
|
|
603 static void
|
|
140
|
604 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
605 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
606 {
|
|
|
607 ngx_int_t rc;
|
|
|
608 ngx_peer_t *peer;
|
|
|
609
|
|
|
610 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
611 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
612 == NGX_ERROR)
|
|
|
613 {
|
|
|
614 ngx_http_upstream_finalize_request(r, u,
|
|
|
615 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
616 return;
|
|
|
617 }
|
|
|
618
|
|
|
619 c->sendfile = 0;
|
|
168
|
620 u->output.sendfile = 0;
|
|
140
|
621
|
|
|
622 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
623
|
|
|
624 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
625 ngx_http_upstream_finalize_request(r, u,
|
|
|
626 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
627 return;
|
|
|
628 }
|
|
|
629
|
|
190
|
630 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
631
|
|
140
|
632 rc = ngx_ssl_handshake(c);
|
|
|
633
|
|
|
634 if (rc == NGX_AGAIN) {
|
|
|
635 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
636 return;
|
|
|
637 }
|
|
|
638
|
|
|
639 ngx_http_upstream_ssl_handshake(c);
|
|
|
640 }
|
|
|
641
|
|
|
642
|
|
|
643 static void
|
|
126
|
644 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
645 {
|
|
|
646 ngx_http_request_t *r;
|
|
|
647 ngx_http_upstream_t *u;
|
|
|
648
|
|
|
649 r = c->data;
|
|
|
650 u = r->upstream;
|
|
|
651
|
|
|
652 if (c->ssl->handshaked) {
|
|
|
653
|
|
|
654 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
655 c->read->handler = ngx_http_upstream_process_header;
|
|
|
656
|
|
|
657 ngx_http_upstream_send_request(r, u);
|
|
|
658
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
|
662 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
663
|
|
|
664 }
|
|
|
665
|
|
|
666 #endif
|
|
|
667
|
|
|
668
|
|
58
|
669 static ngx_int_t
|
|
36
|
670 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
671 {
|
|
|
672 ngx_chain_t *cl;
|
|
|
673
|
|
58
|
674 if (u->reinit_request(r) != NGX_OK) {
|
|
|
675 return NGX_ERROR;
|
|
|
676 }
|
|
|
677
|
|
|
678 ngx_memzero(&r->upstream->headers_in,
|
|
|
679 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
680
|
|
|
681 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
682 sizeof(ngx_table_elt_t))
|
|
|
683 != NGX_OK)
|
|
58
|
684 {
|
|
|
685 return NGX_ERROR;
|
|
28
|
686 }
|
|
|
687
|
|
|
688 /* reinit the request chain */
|
|
126
|
689
|
|
58
|
690 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
691 cl->buf->pos = cl->buf->start;
|
|
|
692 cl->buf->file_pos = 0;
|
|
|
693 }
|
|
|
694
|
|
58
|
695 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
696
|
|
122
|
697 if (r->request_body && r->request_body->temp_file
|
|
146
|
698 && r != r->main && u->output.buf)
|
|
122
|
699 {
|
|
|
700 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
701 if (u->output.free == NULL) {
|
|
|
702 return NGX_ERROR;
|
|
58
|
703 }
|
|
122
|
704
|
|
|
705 u->output.free->buf = u->output.buf;
|
|
|
706 u->output.free->next = NULL;
|
|
|
707
|
|
|
708 u->output.buf->pos = u->output.buf->start;
|
|
|
709 u->output.buf->last = u->output.buf->start;
|
|
58
|
710 }
|
|
28
|
711
|
|
|
712 u->output.buf = NULL;
|
|
|
713 u->output.in = NULL;
|
|
|
714 u->output.busy = NULL;
|
|
126
|
715
|
|
130
|
716 /* reinit u->buffer */
|
|
126
|
717
|
|
28
|
718 #if 0
|
|
|
719 if (u->cache) {
|
|
130
|
720 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
721 u->buffer.last = u->buffer.pos;
|
|
28
|
722
|
|
|
723 } else {
|
|
130
|
724 u->buffer.pos = u->buffer.start;
|
|
|
725 u->buffer.last = u->buffer.start;
|
|
28
|
726 }
|
|
|
727 #else
|
|
58
|
728
|
|
130
|
729 u->buffer.pos = u->buffer.start;
|
|
|
730 u->buffer.last = u->buffer.start;
|
|
58
|
731
|
|
28
|
732 #endif
|
|
|
733
|
|
|
734 /* add one more state */
|
|
|
735
|
|
50
|
736 u->state = ngx_array_push(&u->states);
|
|
|
737 if (u->state == NULL) {
|
|
58
|
738 return NGX_ERROR;
|
|
28
|
739 }
|
|
|
740
|
|
|
741 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
742
|
|
|
743 return NGX_OK;
|
|
28
|
744 }
|
|
|
745
|
|
|
746
|
|
36
|
747 static void
|
|
|
748 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
749 {
|
|
32
|
750 int rc;
|
|
|
751 ngx_connection_t *c;
|
|
126
|
752
|
|
28
|
753 c = u->peer.connection;
|
|
|
754
|
|
|
755 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
756 "http upstream send request");
|
|
|
757
|
|
|
758 #if (NGX_HAVE_KQUEUE)
|
|
|
759
|
|
|
760 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
761 && !u->request_sent
|
|
|
762 && c->write->pending_eof)
|
|
|
763 {
|
|
86
|
764 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
765 "kevent() reported that connect() failed");
|
|
28
|
766 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
767 return;
|
|
|
768 }
|
|
|
769
|
|
|
770 #endif
|
|
|
771
|
|
32
|
772 c->log->action = "sending request to upstream";
|
|
28
|
773
|
|
58
|
774 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
775
|
|
|
776 u->request_sent = 1;
|
|
|
777
|
|
|
778 if (rc == NGX_ERROR) {
|
|
|
779 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
780 return;
|
|
|
781 }
|
|
|
782
|
|
|
783 if (c->write->timer_set) {
|
|
|
784 ngx_del_timer(c->write);
|
|
|
785 }
|
|
|
786
|
|
|
787 if (rc == NGX_AGAIN) {
|
|
|
788 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
789
|
|
|
790 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
791 {
|
|
|
792 ngx_http_upstream_finalize_request(r, u,
|
|
|
793 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
794 return;
|
|
|
795 }
|
|
|
796
|
|
|
797 return;
|
|
|
798 }
|
|
|
799
|
|
|
800 /* rc == NGX_OK */
|
|
|
801
|
|
|
802 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
803 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
804 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
805 ngx_tcp_push_n " failed");
|
|
|
806 ngx_http_upstream_finalize_request(r, u,
|
|
|
807 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
808 return;
|
|
28
|
809 }
|
|
|
810
|
|
|
811 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
812 }
|
|
126
|
813
|
|
28
|
814 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
815
|
|
|
816 #if 1
|
|
|
817 if (c->read->ready) {
|
|
126
|
818
|
|
28
|
819 /* post aio operation */
|
|
|
820
|
|
|
821 /*
|
|
|
822 * TODO comment
|
|
|
823 * although we can post aio operation just in the end
|
|
|
824 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
825 * it's better to do here because we postpone header buffer allocation
|
|
|
826 */
|
|
|
827
|
|
|
828 ngx_http_upstream_process_header(c->read);
|
|
|
829 return;
|
|
|
830 }
|
|
|
831 #endif
|
|
|
832
|
|
58
|
833 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
834
|
|
58
|
835 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
836 ngx_http_upstream_finalize_request(r, u,
|
|
|
837 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
838 return;
|
|
|
839 }
|
|
|
840 }
|
|
|
841
|
|
|
842
|
|
36
|
843 static void
|
|
|
844 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
845 {
|
|
|
846 ngx_connection_t *c;
|
|
|
847 ngx_http_request_t *r;
|
|
|
848 ngx_http_upstream_t *u;
|
|
|
849
|
|
|
850 c = wev->data;
|
|
|
851 r = c->data;
|
|
|
852 u = r->upstream;
|
|
|
853
|
|
|
854 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
855 "http upstream send request handler");
|
|
|
856
|
|
|
857 if (wev->timedout) {
|
|
|
858 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
859 return;
|
|
|
860 }
|
|
|
861
|
|
140
|
862 #if (NGX_HTTP_SSL)
|
|
|
863
|
|
|
864 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
865 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
866 return;
|
|
|
867 }
|
|
|
868
|
|
|
869 #endif
|
|
|
870
|
|
28
|
871 ngx_http_upstream_send_request(r, u);
|
|
|
872 }
|
|
|
873
|
|
|
874
|
|
36
|
875 static void
|
|
|
876 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
877 {
|
|
64
|
878 ssize_t n;
|
|
|
879 ngx_int_t rc;
|
|
122
|
880 ngx_str_t *uri, args;
|
|
198
|
881 ngx_uint_t i, flags;
|
|
64
|
882 ngx_list_part_t *part;
|
|
|
883 ngx_table_elt_t *h;
|
|
|
884 ngx_connection_t *c;
|
|
|
885 ngx_http_request_t *r;
|
|
|
886 ngx_http_upstream_t *u;
|
|
|
887 ngx_http_err_page_t *err_page;
|
|
|
888 ngx_http_core_loc_conf_t *clcf;
|
|
|
889 ngx_http_upstream_header_t *hh;
|
|
|
890 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
891
|
|
|
892 c = rev->data;
|
|
|
893 r = c->data;
|
|
|
894 u = r->upstream;
|
|
|
895
|
|
|
896 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
897 "http upstream process header");
|
|
28
|
898
|
|
32
|
899 c->log->action = "reading response header from upstream";
|
|
28
|
900
|
|
|
901 if (rev->timedout) {
|
|
|
902 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
903 return;
|
|
|
904 }
|
|
126
|
905
|
|
130
|
906 if (u->buffer.start == NULL) {
|
|
|
907 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
908 if (u->buffer.start == NULL) {
|
|
28
|
909 ngx_http_upstream_finalize_request(r, u,
|
|
|
910 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
911 return;
|
|
|
912 }
|
|
|
913
|
|
130
|
914 u->buffer.pos = u->buffer.start;
|
|
|
915 u->buffer.last = u->buffer.start;
|
|
|
916 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
917 u->buffer.temporary = 1;
|
|
|
918
|
|
|
919 u->buffer.tag = u->output.tag;
|
|
28
|
920
|
|
58
|
921 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
922 sizeof(ngx_table_elt_t))
|
|
|
923 != NGX_OK)
|
|
58
|
924 {
|
|
|
925 ngx_http_upstream_finalize_request(r, u,
|
|
|
926 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
927 return;
|
|
|
928 }
|
|
|
929
|
|
28
|
930 #if 0
|
|
|
931 if (u->cache) {
|
|
130
|
932 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
933 u->buffer.last = u->buffer.pos;
|
|
28
|
934 }
|
|
|
935 #endif
|
|
|
936 }
|
|
|
937
|
|
130
|
938 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
939 u->buffer.end - u->buffer.last);
|
|
28
|
940
|
|
|
941 if (n == NGX_AGAIN) {
|
|
|
942 #if 0
|
|
|
943 ngx_add_timer(rev, u->read_timeout);
|
|
|
944 #endif
|
|
|
945
|
|
|
946 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
947 ngx_http_upstream_finalize_request(r, u,
|
|
|
948 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
949 return;
|
|
|
950 }
|
|
|
951
|
|
|
952 return;
|
|
|
953 }
|
|
|
954
|
|
|
955 if (n == 0) {
|
|
|
956 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
957 "upstream prematurely closed connection");
|
|
|
958 }
|
|
|
959
|
|
|
960 if (n == NGX_ERROR || n == 0) {
|
|
|
961 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
962 return;
|
|
|
963 }
|
|
|
964
|
|
130
|
965 u->buffer.last += n;
|
|
28
|
966
|
|
|
967 #if 0
|
|
|
968 u->valid_header_in = 0;
|
|
|
969
|
|
|
970 u->peer.cached = 0;
|
|
|
971 #endif
|
|
|
972
|
|
|
973 rc = u->process_header(r);
|
|
|
974
|
|
|
975 if (rc == NGX_AGAIN) {
|
|
|
976 #if 0
|
|
|
977 ngx_add_timer(rev, u->read_timeout);
|
|
|
978 #endif
|
|
|
979
|
|
130
|
980 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
981 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
982 "upstream sent too big header");
|
|
|
983
|
|
|
984 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
985 return;
|
|
|
986 }
|
|
|
987
|
|
|
988 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
989 ngx_http_upstream_finalize_request(r, u,
|
|
|
990 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
991 return;
|
|
|
992 }
|
|
|
993
|
|
|
994 return;
|
|
|
995 }
|
|
|
996
|
|
|
997 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
998 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
999 return;
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1003 ngx_http_upstream_finalize_request(r, u,
|
|
|
1004 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1005 return;
|
|
|
1006 }
|
|
|
1007
|
|
|
1008 /* rc == NGX_OK */
|
|
|
1009
|
|
78
|
1010 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1011
|
|
|
1012 if (u->peer.tries > 1
|
|
|
1013 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1014 {
|
|
|
1015 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1016 return;
|
|
|
1017 }
|
|
|
1018
|
|
|
1019 #if (NGX_HTTP_CACHE)
|
|
|
1020
|
|
|
1021 if (u->peer.tries == 0
|
|
|
1022 && u->stale
|
|
|
1023 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1024 {
|
|
|
1025 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1026 ngx_http_send_cached_response(r));
|
|
58
|
1027 return;
|
|
|
1028 }
|
|
|
1029
|
|
|
1030 #endif
|
|
|
1031 }
|
|
|
1032
|
|
146
|
1033 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1034
|
|
|
1035 if (u->peer.tries > 1
|
|
|
1036 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1037 {
|
|
|
1038 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1039 return;
|
|
|
1040 }
|
|
|
1041
|
|
|
1042 if (u->conf->redirect_404) {
|
|
|
1043 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1044 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1045 return;
|
|
|
1046 }
|
|
58
|
1047 }
|
|
|
1048
|
|
|
1049
|
|
78
|
1050 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
1051 && u->conf->redirect_errors
|
|
|
1052 && r->err_ctx == NULL)
|
|
|
1053 {
|
|
|
1054 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1055
|
|
|
1056 if (clcf->error_pages) {
|
|
|
1057
|
|
|
1058 err_page = clcf->error_pages->elts;
|
|
|
1059 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1060 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1061
|
|
|
1062 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1063
|
|
|
1064 r->headers_out.www_authenticate =
|
|
|
1065 ngx_list_push(&r->headers_out.headers);
|
|
|
1066
|
|
|
1067 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1068 ngx_http_upstream_finalize_request(r, u,
|
|
|
1069 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1070 return;
|
|
|
1071 }
|
|
|
1072
|
|
126
|
1073 *r->headers_out.www_authenticate =
|
|
78
|
1074 *u->headers_in.www_authenticate;
|
|
|
1075 }
|
|
|
1076
|
|
36
|
1077 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1078 u->headers_in.status_n);
|
|
36
|
1079 return;
|
|
|
1080 }
|
|
|
1081 }
|
|
|
1082 }
|
|
|
1083 }
|
|
|
1084
|
|
64
|
1085 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1086 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1087
|
|
|
1088 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1089
|
|
|
1090 part = &r->upstream->headers_in.headers.part;
|
|
|
1091 h = part->elts;
|
|
|
1092
|
|
|
1093 for (i = 0; /* void */; i++) {
|
|
|
1094
|
|
|
1095 if (i >= part->nelts) {
|
|
|
1096 if (part->next == NULL) {
|
|
|
1097 break;
|
|
|
1098 }
|
|
126
|
1099
|
|
64
|
1100 part = part->next;
|
|
|
1101 h = part->elts;
|
|
|
1102 i = 0;
|
|
|
1103 }
|
|
|
1104
|
|
198
|
1105 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1106 h[i].lowcase_key, h[i].key.len);
|
|
|
1107
|
|
|
1108 if (hh && hh->redirect) {
|
|
|
1109 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
64
|
1110 ngx_http_upstream_finalize_request(r, u,
|
|
|
1111 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1112 return;
|
|
|
1113 }
|
|
|
1114 }
|
|
|
1115 }
|
|
|
1116
|
|
122
|
1117 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1118 args.len = 0;
|
|
|
1119 args.data = NULL;
|
|
|
1120 flags = 0;
|
|
|
1121
|
|
|
1122 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1123 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1124 return;
|
|
|
1125 }
|
|
|
1126
|
|
|
1127 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1128 r->zero_in_uri = 1;
|
|
|
1129 }
|
|
|
1130
|
|
|
1131 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1132 return;
|
|
|
1133 }
|
|
|
1134
|
|
28
|
1135 ngx_http_upstream_send_response(r, u);
|
|
|
1136 }
|
|
|
1137
|
|
|
1138
|
|
36
|
1139 static void
|
|
|
1140 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1141 {
|
|
132
|
1142 int tcp_nodelay;
|
|
130
|
1143 ssize_t size;
|
|
58
|
1144 ngx_int_t rc;
|
|
198
|
1145 ngx_uint_t i;
|
|
58
|
1146 ngx_list_part_t *part;
|
|
|
1147 ngx_table_elt_t *h;
|
|
|
1148 ngx_event_pipe_t *p;
|
|
132
|
1149 ngx_connection_t *c;
|
|
112
|
1150 ngx_pool_cleanup_t *cl;
|
|
|
1151 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1152 ngx_http_core_loc_conf_t *clcf;
|
|
|
1153 ngx_http_upstream_header_t *hh;
|
|
|
1154 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1155
|
|
|
1156 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1157
|
|
|
1158 part = &r->upstream->headers_in.headers.part;
|
|
|
1159 h = part->elts;
|
|
|
1160
|
|
|
1161 for (i = 0; /* void */; i++) {
|
|
28
|
1162
|
|
58
|
1163 if (i >= part->nelts) {
|
|
|
1164 if (part->next == NULL) {
|
|
|
1165 break;
|
|
|
1166 }
|
|
126
|
1167
|
|
58
|
1168 part = part->next;
|
|
|
1169 h = part->elts;
|
|
|
1170 i = 0;
|
|
|
1171 }
|
|
|
1172
|
|
198
|
1173 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1174 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1175 {
|
|
198
|
1176 continue;
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1180 h[i].lowcase_key, h[i].key.len);
|
|
|
1181
|
|
|
1182 if (hh) {
|
|
|
1183 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1184 ngx_http_upstream_finalize_request(r, u,
|
|
|
1185 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1186 return;
|
|
|
1187 }
|
|
|
1188
|
|
|
1189 continue;
|
|
|
1190 }
|
|
|
1191
|
|
|
1192 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1193 ngx_http_upstream_finalize_request(r, u,
|
|
|
1194 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1195 return;
|
|
|
1196 }
|
|
|
1197 }
|
|
|
1198
|
|
198
|
1199 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1200 r->headers_out.server->hash = 0;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1204 r->headers_out.date->hash = 0;
|
|
|
1205 }
|
|
|
1206
|
|
78
|
1207 r->headers_out.status = u->headers_in.status_n;
|
|
|
1208 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1209
|
|
130
|
1210 if (r->headers_out.content_length_n != -1) {
|
|
|
1211 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1212
|
|
|
1213 } else {
|
|
|
1214 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1215 }
|
|
|
1216
|
|
58
|
1217 rc = ngx_http_send_header(r);
|
|
28
|
1218
|
|
178
|
1219 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1220 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1221 return;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 u->header_sent = 1;
|
|
|
1225
|
|
122
|
1226 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1227 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1228 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1229 clf = cl->data;
|
|
|
1230
|
|
|
1231 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1232 cl->handler(clf);
|
|
|
1233 cl->handler = NULL;
|
|
|
1234 break;
|
|
|
1235 }
|
|
|
1236 }
|
|
|
1237 }
|
|
|
1238 }
|
|
|
1239
|
|
132
|
1240 c = r->connection;
|
|
|
1241
|
|
130
|
1242 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1243
|
|
198
|
1244 if (!u->buffering) {
|
|
130
|
1245
|
|
|
1246 if (u->input_filter == NULL) {
|
|
|
1247 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1248 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1249 u->input_filter_ctx = r;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 u->peer.connection->read->handler =
|
|
|
1253 ngx_http_upstream_process_non_buffered_body;
|
|
|
1254 r->write_event_handler =
|
|
|
1255 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1256
|
|
|
1257 r->limit_rate = 0;
|
|
|
1258
|
|
|
1259 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1260 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1261 return;
|
|
|
1262 }
|
|
|
1263
|
|
132
|
1264 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1265 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1266
|
|
|
1267 tcp_nodelay = 1;
|
|
|
1268
|
|
|
1269 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1270 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1271 {
|
|
|
1272 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1273 "setsockopt(TCP_NODELAY) failed");
|
|
|
1274 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1275 return;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1279 }
|
|
|
1280
|
|
130
|
1281 size = u->buffer.last - u->buffer.pos;
|
|
|
1282
|
|
|
1283 if (size) {
|
|
|
1284 u->buffer.last = u->buffer.pos;
|
|
|
1285
|
|
|
1286 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1287 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1288 return;
|
|
|
1289 }
|
|
|
1290
|
|
132
|
1291 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1292
|
|
|
1293 } else {
|
|
|
1294 u->buffer.pos = u->buffer.start;
|
|
|
1295 u->buffer.last = u->buffer.start;
|
|
|
1296
|
|
|
1297 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1298 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1299 return;
|
|
|
1300 }
|
|
|
1301 }
|
|
|
1302
|
|
|
1303 return;
|
|
|
1304 }
|
|
|
1305
|
|
28
|
1306 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1307
|
|
|
1308 #if 0
|
|
|
1309
|
|
|
1310 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1311 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1312 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1313 ngx_close_file_n " \"%s\" failed",
|
|
|
1314 u->cache->ctx.file.name.data);
|
|
|
1315 }
|
|
|
1316 }
|
|
|
1317
|
|
|
1318 if (u->cachable) {
|
|
130
|
1319 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1320
|
|
|
1321 header->expires = u->cache->ctx.expires;
|
|
|
1322 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1323 header->date = u->cache->ctx.date;
|
|
|
1324 header->length = r->headers_out.content_length_n;
|
|
|
1325 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1326
|
|
|
1327 header->key_len = u->cache->ctx.key0.len;
|
|
|
1328 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1329 header->key[header->key_len] = LF;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 #endif
|
|
|
1333
|
|
130
|
1334 p = u->pipe;
|
|
28
|
1335
|
|
|
1336 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1337 p->output_ctx = r;
|
|
|
1338 p->tag = u->output.tag;
|
|
126
|
1339 p->bufs = u->conf->bufs;
|
|
28
|
1340 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1341 p->upstream = u->peer.connection;
|
|
132
|
1342 p->downstream = c;
|
|
28
|
1343 p->pool = r->pool;
|
|
132
|
1344 p->log = c->log;
|
|
126
|
1345
|
|
28
|
1346 p->cachable = u->cachable;
|
|
|
1347
|
|
50
|
1348 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1349 if (p->temp_file == NULL) {
|
|
28
|
1350 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1351 return;
|
|
|
1352 }
|
|
|
1353
|
|
|
1354 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1355 p->temp_file->file.log = c->log;
|
|
28
|
1356 p->temp_file->path = u->conf->temp_path;
|
|
|
1357 p->temp_file->pool = r->pool;
|
|
126
|
1358
|
|
28
|
1359 if (u->cachable) {
|
|
|
1360 p->temp_file->persistent = 1;
|
|
|
1361 } else {
|
|
|
1362 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1363 "to a temporary file";
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1367 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1368
|
|
50
|
1369 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1370 if (p->preread_bufs == NULL) {
|
|
28
|
1371 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1372 return;
|
|
|
1373 }
|
|
130
|
1374 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1375 p->preread_bufs->next = NULL;
|
|
130
|
1376 u->buffer.recycled = 1;
|
|
|
1377
|
|
|
1378 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1379
|
|
|
1380 if (u->cachable) {
|
|
|
1381 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1382 if (p->buf_to_file == NULL) {
|
|
|
1383 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1384 return;
|
|
|
1385 }
|
|
130
|
1386 p->buf_to_file->pos = u->buffer.start;
|
|
|
1387 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1388 p->buf_to_file->temporary = 1;
|
|
|
1389 }
|
|
|
1390
|
|
|
1391 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1392 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1393 p->single_buf = 1;
|
|
|
1394 }
|
|
|
1395
|
|
|
1396 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1397 p->free_bufs = 1;
|
|
|
1398
|
|
|
1399 /*
|
|
130
|
1400 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1401 * as though these bytes were read
|
|
|
1402 */
|
|
130
|
1403 u->buffer.last = u->buffer.pos;
|
|
28
|
1404
|
|
|
1405 if (u->conf->cyclic_temp_file) {
|
|
|
1406
|
|
|
1407 /*
|
|
|
1408 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1409 * because the writing a new data may interfere with sendfile()
|
|
|
1410 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1411 */
|
|
|
1412
|
|
|
1413 p->cyclic_temp_file = 1;
|
|
132
|
1414 c->sendfile = 0;
|
|
28
|
1415
|
|
|
1416 } else {
|
|
|
1417 p->cyclic_temp_file = 0;
|
|
|
1418 }
|
|
|
1419
|
|
|
1420 p->read_timeout = u->conf->read_timeout;
|
|
|
1421 p->send_timeout = clcf->send_timeout;
|
|
|
1422 p->send_lowat = clcf->send_lowat;
|
|
|
1423
|
|
58
|
1424 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1425 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1426
|
|
|
1427 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1428 }
|
|
|
1429
|
|
|
1430
|
|
36
|
1431 static void
|
|
130
|
1432 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1433 {
|
|
|
1434 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1435 }
|
|
|
1436
|
|
|
1437
|
|
|
1438 static void
|
|
|
1439 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1440 {
|
|
|
1441 size_t size;
|
|
|
1442 ssize_t n;
|
|
|
1443 ngx_buf_t *b;
|
|
132
|
1444 ngx_int_t rc;
|
|
130
|
1445 ngx_uint_t do_write;
|
|
132
|
1446 ngx_connection_t *c, *client;
|
|
130
|
1447 ngx_http_request_t *r;
|
|
|
1448 ngx_http_upstream_t *u;
|
|
|
1449 ngx_http_core_loc_conf_t *clcf;
|
|
|
1450
|
|
|
1451 c = ev->data;
|
|
|
1452
|
|
|
1453 if (ev->write) {
|
|
|
1454 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1455 "http upstream process non buffered downstream");
|
|
|
1456 c->log->action = "sending to client";
|
|
|
1457
|
|
|
1458 } else {
|
|
|
1459 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1460 "http upstream process non buffered upstream");
|
|
|
1461 c->log->action = "reading upstream";
|
|
|
1462 }
|
|
|
1463
|
|
|
1464 if (ev->timedout) {
|
|
|
1465 if (ev->write) {
|
|
|
1466 c->timedout = 1;
|
|
160
|
1467 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1468
|
|
130
|
1469 } else {
|
|
160
|
1470 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1471 }
|
|
|
1472 }
|
|
|
1473
|
|
|
1474 r = c->data;
|
|
|
1475 u = r->upstream;
|
|
132
|
1476 client = r->connection;
|
|
130
|
1477
|
|
|
1478 b = &u->buffer;
|
|
|
1479
|
|
|
1480 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1481
|
|
|
1482 do_write = ev->write;
|
|
|
1483
|
|
|
1484 for ( ;; ) {
|
|
|
1485
|
|
|
1486 if (do_write) {
|
|
|
1487
|
|
|
1488 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1489 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1490
|
|
|
1491 if (client->destroyed) {
|
|
|
1492 return;
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 if (rc == NGX_ERROR) {
|
|
130
|
1496 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1497 return;
|
|
|
1498 }
|
|
|
1499
|
|
|
1500 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1501 &u->out_bufs, u->output.tag);
|
|
|
1502 }
|
|
|
1503
|
|
|
1504 if (u->busy_bufs == NULL) {
|
|
|
1505
|
|
|
1506 if (u->length == 0
|
|
|
1507 || u->peer.connection->read->eof
|
|
|
1508 || u->peer.connection->read->error)
|
|
|
1509 {
|
|
|
1510 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1511 return;
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 b->pos = b->start;
|
|
|
1515 b->last = b->start;
|
|
|
1516 }
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 size = b->end - b->last;
|
|
|
1520
|
|
|
1521 if (size > u->length) {
|
|
|
1522 size = u->length;
|
|
|
1523 }
|
|
|
1524
|
|
|
1525 if (size && u->peer.connection->read->ready) {
|
|
|
1526 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1527
|
|
|
1528 if (n == NGX_AGAIN) {
|
|
|
1529 break;
|
|
|
1530 }
|
|
|
1531
|
|
|
1532 if (n > 0) {
|
|
|
1533 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1534 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1535 return;
|
|
|
1536 }
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 do_write = 1;
|
|
|
1540
|
|
|
1541 continue;
|
|
|
1542 }
|
|
|
1543
|
|
|
1544 break;
|
|
|
1545 }
|
|
|
1546
|
|
132
|
1547 if (client->data == r) {
|
|
|
1548 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1549 == NGX_ERROR)
|
|
|
1550 {
|
|
|
1551 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1552 return;
|
|
|
1553 }
|
|
130
|
1554 }
|
|
|
1555
|
|
132
|
1556 if (client->write->active) {
|
|
|
1557 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1558
|
|
|
1559 } else if (client->write->timer_set) {
|
|
|
1560 ngx_del_timer(client->write);
|
|
130
|
1561 }
|
|
|
1562
|
|
|
1563 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1564 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1565 return;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 if (u->peer.connection->read->active) {
|
|
|
1569 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1570
|
|
132
|
1571 } else if (u->peer.connection->read->timer_set) {
|
|
|
1572 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1573 }
|
|
|
1574 }
|
|
|
1575
|
|
|
1576
|
|
|
1577 static ngx_int_t
|
|
|
1578 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1579 {
|
|
|
1580 return NGX_OK;
|
|
|
1581 }
|
|
|
1582
|
|
|
1583
|
|
|
1584 static ngx_int_t
|
|
|
1585 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1586 {
|
|
|
1587 ngx_http_request_t *r = data;
|
|
|
1588
|
|
|
1589 ngx_buf_t *b;
|
|
|
1590 ngx_chain_t *cl, **ll;
|
|
|
1591 ngx_http_upstream_t *u;
|
|
|
1592
|
|
|
1593 u = r->upstream;
|
|
|
1594
|
|
|
1595 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1596 ll = &cl->next;
|
|
|
1597 }
|
|
|
1598
|
|
|
1599 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1600 if (cl == NULL) {
|
|
|
1601 return NGX_ERROR;
|
|
|
1602 }
|
|
|
1603
|
|
|
1604 *ll = cl;
|
|
|
1605
|
|
|
1606 cl->buf->flush = 1;
|
|
|
1607 cl->buf->memory = 1;
|
|
|
1608
|
|
|
1609 b = &u->buffer;
|
|
|
1610
|
|
|
1611 cl->buf->pos = b->last;
|
|
|
1612 b->last += bytes;
|
|
|
1613 cl->buf->last = b->last;
|
|
|
1614
|
|
|
1615 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1616 return NGX_OK;
|
|
|
1617 }
|
|
|
1618
|
|
|
1619 u->length -= bytes;
|
|
|
1620
|
|
|
1621 return NGX_OK;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624
|
|
|
1625 static void
|
|
58
|
1626 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1627 {
|
|
|
1628 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1629 }
|
|
|
1630
|
|
|
1631
|
|
|
1632 static void
|
|
36
|
1633 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1634 {
|
|
58
|
1635 ngx_event_pipe_t *p;
|
|
132
|
1636 ngx_connection_t *c, *downstream;
|
|
28
|
1637 ngx_http_request_t *r;
|
|
|
1638 ngx_http_upstream_t *u;
|
|
|
1639
|
|
|
1640 c = ev->data;
|
|
|
1641 r = c->data;
|
|
|
1642 u = r->upstream;
|
|
132
|
1643 downstream = r->connection;
|
|
28
|
1644
|
|
|
1645 if (ev->write) {
|
|
32
|
1646 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1647 "http upstream process downstream");
|
|
|
1648 c->log->action = "sending to client";
|
|
126
|
1649
|
|
28
|
1650 } else {
|
|
32
|
1651 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1652 "http upstream process upstream");
|
|
|
1653 c->log->action = "reading upstream";
|
|
28
|
1654 }
|
|
126
|
1655
|
|
130
|
1656 p = u->pipe;
|
|
28
|
1657
|
|
|
1658 if (ev->timedout) {
|
|
|
1659 if (ev->write) {
|
|
76
|
1660 if (ev->delayed) {
|
|
|
1661
|
|
|
1662 ev->timedout = 0;
|
|
|
1663 ev->delayed = 0;
|
|
|
1664
|
|
|
1665 if (!ev->ready) {
|
|
|
1666 ngx_add_timer(ev, p->send_timeout);
|
|
|
1667
|
|
|
1668 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1669 {
|
|
|
1670 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1671 return;
|
|
|
1672 }
|
|
|
1673
|
|
|
1674 return;
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1678
|
|
|
1679 if (downstream->destroyed) {
|
|
|
1680 return;
|
|
|
1681 }
|
|
|
1682
|
|
76
|
1683 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1684 return;
|
|
|
1685 }
|
|
|
1686
|
|
|
1687 } else {
|
|
|
1688 p->downstream_error = 1;
|
|
126
|
1689 c->timedout = 1;
|
|
160
|
1690 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
1691 }
|
|
28
|
1692
|
|
|
1693 } else {
|
|
126
|
1694 p->upstream_error = 1;
|
|
160
|
1695 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
1696 }
|
|
|
1697
|
|
|
1698 } else {
|
|
76
|
1699 if (ev->write && ev->delayed) {
|
|
|
1700 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1701 "http downstream delayed");
|
|
|
1702
|
|
|
1703 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1704 return;
|
|
|
1705 }
|
|
|
1706
|
|
|
1707 return;
|
|
|
1708 }
|
|
|
1709
|
|
28
|
1710 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1711
|
|
|
1712 if (downstream->destroyed) {
|
|
|
1713 return;
|
|
|
1714 }
|
|
|
1715
|
|
28
|
1716 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1717 return;
|
|
|
1718 }
|
|
|
1719 }
|
|
126
|
1720
|
|
28
|
1721 if (u->peer.connection) {
|
|
|
1722
|
|
|
1723 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1724
|
|
|
1725 if (p->upstream_done && u->cachable) {
|
|
|
1726 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1727 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1728 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1729 return;
|
|
|
1730 }
|
|
|
1731
|
|
|
1732 } else if (p->upstream_eof && u->cachable) {
|
|
|
1733
|
|
|
1734 /* TODO: check length & update cache */
|
|
|
1735
|
|
|
1736 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1737 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1738 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1739 return;
|
|
|
1740 }
|
|
|
1741 }
|
|
|
1742
|
|
|
1743 #endif
|
|
|
1744
|
|
|
1745 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1746 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1747 "http upstream exit: %p", p->out);
|
|
28
|
1748 #if 0
|
|
|
1749 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1750 #endif
|
|
|
1751 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1752 return;
|
|
|
1753 }
|
|
|
1754 }
|
|
|
1755
|
|
|
1756 if (p->downstream_error) {
|
|
32
|
1757 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1758 "http upstream downstream error");
|
|
28
|
1759
|
|
|
1760 if (!u->cachable && u->peer.connection) {
|
|
|
1761 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1762 }
|
|
|
1763 }
|
|
|
1764 }
|
|
|
1765
|
|
|
1766
|
|
36
|
1767 static void
|
|
|
1768 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1769 {
|
|
|
1770 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1771 "http upstream dummy handler");
|
|
|
1772 }
|
|
|
1773
|
|
|
1774
|
|
36
|
1775 static void
|
|
|
1776 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1777 ngx_uint_t ft_type)
|
|
28
|
1778 {
|
|
74
|
1779 ngx_uint_t status, down;
|
|
28
|
1780
|
|
|
1781 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1782 "http next upstream, %xD", ft_type);
|
|
|
1783
|
|
|
1784 #if 0
|
|
|
1785 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1786 #endif
|
|
|
1787
|
|
74
|
1788 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1789 down = 0;
|
|
|
1790 } else {
|
|
|
1791 down = 1;
|
|
28
|
1792 }
|
|
74
|
1793
|
|
|
1794 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1795
|
|
28
|
1796 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1797 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1798 "upstream timed out");
|
|
|
1799 }
|
|
126
|
1800
|
|
28
|
1801 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1802 status = 0;
|
|
|
1803
|
|
|
1804 } else {
|
|
|
1805 switch(ft_type) {
|
|
|
1806
|
|
|
1807 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1808 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1809 break;
|
|
|
1810
|
|
|
1811 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1812 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1813 break;
|
|
|
1814
|
|
|
1815 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1816 status = NGX_HTTP_NOT_FOUND;
|
|
|
1817 break;
|
|
|
1818
|
|
|
1819 /*
|
|
|
1820 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1821 * never reach here
|
|
|
1822 */
|
|
|
1823
|
|
|
1824 default:
|
|
|
1825 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1826 }
|
|
|
1827 }
|
|
|
1828
|
|
132
|
1829 if (r->connection->error) {
|
|
28
|
1830 ngx_http_upstream_finalize_request(r, u,
|
|
|
1831 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1832 return;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 if (status) {
|
|
|
1836 u->state->status = status;
|
|
|
1837
|
|
74
|
1838 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1839
|
|
|
1840 #if (NGX_HTTP_CACHE)
|
|
|
1841
|
|
|
1842 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1843 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1844 ngx_http_send_cached_response(r));
|
|
28
|
1845 return;
|
|
|
1846 }
|
|
|
1847
|
|
|
1848 #endif
|
|
|
1849
|
|
|
1850 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1851 return;
|
|
|
1852 }
|
|
|
1853 }
|
|
|
1854
|
|
|
1855 if (u->peer.connection) {
|
|
|
1856 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1857 "close http upstream connection: %d",
|
|
|
1858 u->peer.connection->fd);
|
|
126
|
1859 #if (NGX_HTTP_SSL)
|
|
|
1860 if (u->peer.connection->ssl) {
|
|
|
1861 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1862 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1863 }
|
|
|
1864 #endif
|
|
28
|
1865 ngx_close_connection(u->peer.connection);
|
|
|
1866 }
|
|
|
1867
|
|
|
1868 #if 0
|
|
|
1869 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1870 ngx_http_upstream_busy_lock(p);
|
|
|
1871 return;
|
|
|
1872 }
|
|
|
1873 #endif
|
|
|
1874
|
|
|
1875 ngx_http_upstream_connect(r, u);
|
|
|
1876 }
|
|
|
1877
|
|
|
1878
|
|
36
|
1879 static void
|
|
118
|
1880 ngx_http_upstream_cleanup(void *data)
|
|
|
1881 {
|
|
|
1882 ngx_http_request_t *r = data;
|
|
|
1883
|
|
|
1884 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1885 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1886
|
|
|
1887 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1888 }
|
|
|
1889
|
|
|
1890
|
|
|
1891 static void
|
|
36
|
1892 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1893 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1894 {
|
|
112
|
1895 ngx_time_t *tp;
|
|
|
1896
|
|
32
|
1897 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1898 "finalize http upstream request: %i", rc);
|
|
28
|
1899
|
|
118
|
1900 *u->cleanup = NULL;
|
|
|
1901
|
|
112
|
1902 if (u->state->response_time) {
|
|
|
1903 tp = ngx_timeofday();
|
|
|
1904 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1905 - u->state->response_time;
|
|
|
1906 }
|
|
|
1907
|
|
28
|
1908 u->finalize_request(r, rc);
|
|
|
1909
|
|
|
1910 if (u->peer.connection) {
|
|
|
1911 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1912 "close http upstream connection: %d",
|
|
|
1913 u->peer.connection->fd);
|
|
126
|
1914 #if (NGX_HTTP_SSL)
|
|
|
1915
|
|
|
1916 /* TODO: do not shutdown persistent connection */
|
|
|
1917
|
|
|
1918 if (u->peer.connection->ssl) {
|
|
|
1919 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1920 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1921 }
|
|
|
1922 #endif
|
|
28
|
1923 ngx_close_connection(u->peer.connection);
|
|
|
1924 }
|
|
|
1925
|
|
32
|
1926 u->peer.connection = NULL;
|
|
|
1927
|
|
112
|
1928 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1929 {
|
|
|
1930 rc = 0;
|
|
|
1931 }
|
|
|
1932
|
|
130
|
1933 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1934 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1935 "http upstream temp fd: %d",
|
|
130
|
1936 u->pipe->temp_file->file.fd);
|
|
28
|
1937 }
|
|
|
1938
|
|
|
1939 #if 0
|
|
|
1940 if (u->cache) {
|
|
|
1941 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1942 "http upstream cache fd: %d",
|
|
28
|
1943 u->cache->ctx.file.fd);
|
|
|
1944 }
|
|
|
1945 #endif
|
|
|
1946
|
|
58
|
1947 r->log_handler = u->saved_log_handler;
|
|
64
|
1948
|
|
|
1949 if (rc == NGX_DECLINED) {
|
|
|
1950 return;
|
|
|
1951 }
|
|
|
1952
|
|
32
|
1953 r->connection->log->action = "sending to client";
|
|
|
1954
|
|
178
|
1955 if (rc == 0 && r == r->main && !r->post_action) {
|
|
130
|
1956 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
1957 }
|
|
|
1958
|
|
|
1959 ngx_http_finalize_request(r, rc);
|
|
|
1960 }
|
|
|
1961
|
|
|
1962
|
|
126
|
1963 #if (NGX_HTTP_SSL)
|
|
|
1964
|
|
|
1965 static void
|
|
|
1966 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1967 {
|
|
|
1968 /* lock peer mutex */
|
|
|
1969
|
|
|
1970 if (peer->ssl_session) {
|
|
|
1971 ngx_ssl_free_session(peer->ssl_session);
|
|
|
1972 }
|
|
|
1973
|
|
|
1974 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
1975
|
|
|
1976 /* unlock peer mutex */
|
|
|
1977
|
|
|
1978 /*
|
|
|
1979 * We send the "close notify" shutdown alert to the upstream only
|
|
|
1980 * and do not wait its "close notify" shutdown alert.
|
|
|
1981 * It is acceptable according to the TLS standard.
|
|
|
1982 */
|
|
|
1983
|
|
|
1984 c->ssl->no_wait_shutdown = 1;
|
|
|
1985
|
|
|
1986 (void) ngx_ssl_shutdown(c);
|
|
|
1987 }
|
|
|
1988
|
|
|
1989 #endif
|
|
|
1990
|
|
|
1991
|
|
58
|
1992 static ngx_int_t
|
|
|
1993 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1994 ngx_uint_t offset)
|
|
126
|
1995 {
|
|
58
|
1996 ngx_table_elt_t **ph;
|
|
126
|
1997
|
|
58
|
1998 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1999
|
|
|
2000 if (*ph == NULL) {
|
|
|
2001 *ph = h;
|
|
|
2002 }
|
|
|
2003
|
|
|
2004 return NGX_OK;
|
|
|
2005 }
|
|
|
2006
|
|
|
2007
|
|
|
2008 static ngx_int_t
|
|
|
2009 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2010 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2011 {
|
|
|
2012 ngx_array_t *pa;
|
|
|
2013 ngx_table_elt_t **ph;
|
|
|
2014
|
|
|
2015 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2016
|
|
|
2017 if (pa->elts == NULL) {
|
|
|
2018 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2019 {
|
|
|
2020 return NGX_ERROR;
|
|
|
2021 }
|
|
|
2022 }
|
|
|
2023
|
|
|
2024 ph = ngx_array_push(pa);
|
|
|
2025 if (ph == NULL) {
|
|
|
2026 return NGX_ERROR;
|
|
|
2027 }
|
|
|
2028
|
|
|
2029 *ph = h;
|
|
|
2030
|
|
|
2031 return NGX_OK;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034
|
|
|
2035 static ngx_int_t
|
|
|
2036 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2037 ngx_uint_t offset)
|
|
|
2038 {
|
|
|
2039 return NGX_OK;
|
|
|
2040 }
|
|
|
2041
|
|
|
2042
|
|
|
2043 static ngx_int_t
|
|
76
|
2044 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2045 ngx_uint_t offset)
|
|
126
|
2046 {
|
|
76
|
2047 ngx_int_t n;
|
|
|
2048
|
|
|
2049 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2050
|
|
|
2051 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2052
|
|
|
2053 if (n != NGX_ERROR) {
|
|
|
2054 r->limit_rate = (size_t) n;
|
|
|
2055 }
|
|
|
2056
|
|
|
2057 return NGX_OK;
|
|
|
2058 }
|
|
|
2059
|
|
|
2060
|
|
|
2061 static ngx_int_t
|
|
198
|
2062 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2063 ngx_uint_t offset)
|
|
|
2064 {
|
|
|
2065 u_char c0, c1, c2;
|
|
|
2066
|
|
|
2067 if (r->upstream->conf->change_buffering) {
|
|
|
2068
|
|
|
2069 if (h->value.len == 2) {
|
|
|
2070 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2071 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2072
|
|
|
2073 if (c0 == 'n' && c1 == 'o') {
|
|
|
2074 r->upstream->buffering = 0;
|
|
|
2075 }
|
|
|
2076
|
|
|
2077 } else if (h->value.len == 3) {
|
|
|
2078 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2079 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2080 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2081
|
|
|
2082 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2083 r->upstream->buffering = 1;
|
|
|
2084 }
|
|
|
2085 }
|
|
|
2086 }
|
|
|
2087
|
|
|
2088 return NGX_OK;
|
|
|
2089 }
|
|
|
2090
|
|
|
2091
|
|
|
2092 static ngx_int_t
|
|
58
|
2093 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2094 ngx_uint_t offset)
|
|
|
2095 {
|
|
122
|
2096 ngx_table_elt_t *ho, **ph;
|
|
58
|
2097
|
|
|
2098 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2099 if (ho == NULL) {
|
|
|
2100 return NGX_ERROR;
|
|
|
2101 }
|
|
|
2102
|
|
|
2103 *ho = *h;
|
|
|
2104
|
|
122
|
2105 if (offset) {
|
|
|
2106 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2107 *ph = ho;
|
|
|
2108 }
|
|
|
2109
|
|
58
|
2110 return NGX_OK;
|
|
|
2111 }
|
|
|
2112
|
|
|
2113
|
|
|
2114 static ngx_int_t
|
|
|
2115 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2116 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2117 {
|
|
|
2118 ngx_array_t *pa;
|
|
|
2119 ngx_table_elt_t *ho, **ph;
|
|
|
2120
|
|
|
2121 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2122
|
|
|
2123 if (pa->elts == NULL) {
|
|
|
2124 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2125 {
|
|
|
2126 return NGX_ERROR;
|
|
|
2127 }
|
|
|
2128 }
|
|
|
2129
|
|
|
2130 ph = ngx_array_push(pa);
|
|
|
2131 if (ph == NULL) {
|
|
|
2132 return NGX_ERROR;
|
|
|
2133 }
|
|
|
2134
|
|
|
2135 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2136 if (ho == NULL) {
|
|
|
2137 return NGX_ERROR;
|
|
|
2138 }
|
|
|
2139
|
|
|
2140 *ho = *h;
|
|
|
2141 *ph = ho;
|
|
|
2142
|
|
|
2143 return NGX_OK;
|
|
|
2144 }
|
|
|
2145
|
|
|
2146
|
|
|
2147 static ngx_int_t
|
|
|
2148 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2149 ngx_uint_t offset)
|
|
|
2150 {
|
|
|
2151 r->headers_out.content_type = h->value;
|
|
|
2152
|
|
|
2153 return NGX_OK;
|
|
|
2154 }
|
|
|
2155
|
|
|
2156
|
|
|
2157 static ngx_int_t
|
|
|
2158 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2159 ngx_uint_t offset)
|
|
|
2160 {
|
|
|
2161 ngx_table_elt_t *ho;
|
|
|
2162
|
|
|
2163 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2164 if (ho == NULL) {
|
|
|
2165 return NGX_ERROR;
|
|
|
2166 }
|
|
|
2167
|
|
|
2168 *ho = *h;
|
|
|
2169
|
|
|
2170 r->headers_out.content_length = ho;
|
|
|
2171 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2172
|
|
|
2173 return NGX_OK;
|
|
|
2174 }
|
|
|
2175
|
|
|
2176
|
|
|
2177 static ngx_int_t
|
|
|
2178 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2179 ngx_uint_t offset)
|
|
|
2180 {
|
|
|
2181 ngx_int_t rc;
|
|
|
2182 ngx_table_elt_t *ho;
|
|
|
2183
|
|
|
2184 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2185 if (ho == NULL) {
|
|
|
2186 return NGX_ERROR;
|
|
|
2187 }
|
|
|
2188
|
|
|
2189 *ho = *h;
|
|
|
2190
|
|
|
2191 if (r->upstream->rewrite_redirect) {
|
|
|
2192 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2193
|
|
78
|
2194 if (rc == NGX_DECLINED) {
|
|
|
2195 return NGX_OK;
|
|
|
2196 }
|
|
|
2197
|
|
58
|
2198 if (rc == NGX_OK) {
|
|
|
2199 r->headers_out.location = ho;
|
|
|
2200
|
|
|
2201 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2202 "rewritten location: \"%V\"", &ho->value);
|
|
|
2203 }
|
|
|
2204
|
|
|
2205 return rc;
|
|
|
2206 }
|
|
|
2207
|
|
|
2208 /*
|
|
|
2209 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2210 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2211 */
|
|
|
2212
|
|
|
2213 return NGX_OK;
|
|
|
2214 }
|
|
|
2215
|
|
|
2216
|
|
|
2217 static ngx_int_t
|
|
|
2218 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2219 ngx_uint_t offset)
|
|
|
2220 {
|
|
|
2221 u_char *p;
|
|
|
2222 ngx_int_t rc;
|
|
|
2223 ngx_table_elt_t *ho;
|
|
|
2224
|
|
|
2225 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2226 if (ho == NULL) {
|
|
|
2227 return NGX_ERROR;
|
|
|
2228 }
|
|
|
2229
|
|
|
2230 *ho = *h;
|
|
|
2231
|
|
|
2232 if (r->upstream->rewrite_redirect) {
|
|
|
2233
|
|
|
2234 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2235
|
|
|
2236 if (p) {
|
|
|
2237 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2238
|
|
|
2239 } else {
|
|
|
2240 return NGX_OK;
|
|
|
2241 }
|
|
|
2242
|
|
78
|
2243 if (rc == NGX_DECLINED) {
|
|
|
2244 return NGX_OK;
|
|
|
2245 }
|
|
|
2246
|
|
58
|
2247 #if (NGX_DEBUG)
|
|
|
2248 if (rc == NGX_OK) {
|
|
|
2249 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2250 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2251 }
|
|
|
2252 #endif
|
|
|
2253
|
|
|
2254 return rc;
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 return NGX_OK;
|
|
|
2258 }
|
|
|
2259
|
|
|
2260
|
|
|
2261 #if (NGX_HTTP_GZIP)
|
|
|
2262
|
|
|
2263 static ngx_int_t
|
|
|
2264 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2265 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2266 {
|
|
|
2267 ngx_table_elt_t *ho;
|
|
|
2268
|
|
|
2269 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2270 if (ho == NULL) {
|
|
|
2271 return NGX_ERROR;
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 *ho = *h;
|
|
|
2275
|
|
|
2276 r->headers_out.content_encoding = ho;
|
|
|
2277
|
|
|
2278 return NGX_OK;
|
|
|
2279 }
|
|
|
2280
|
|
|
2281 #endif
|
|
|
2282
|
|
|
2283
|
|
36
|
2284 static size_t
|
|
|
2285 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2286 {
|
|
|
2287 if (r->upstream) {
|
|
|
2288 return r->upstream->states.nelts * (3 + 2);
|
|
|
2289 }
|
|
|
2290
|
|
|
2291 return 1;
|
|
|
2292 }
|
|
|
2293
|
|
|
2294
|
|
36
|
2295 static u_char *
|
|
|
2296 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2297 ngx_http_log_op_t *op)
|
|
28
|
2298 {
|
|
|
2299 ngx_uint_t i;
|
|
|
2300 ngx_http_upstream_t *u;
|
|
|
2301 ngx_http_upstream_state_t *state;
|
|
|
2302
|
|
|
2303 u = r->upstream;
|
|
|
2304
|
|
122
|
2305 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2306 *buf = '-';
|
|
|
2307 return buf + 1;
|
|
|
2308 }
|
|
|
2309
|
|
|
2310 i = 0;
|
|
|
2311 state = u->states.elts;
|
|
|
2312
|
|
|
2313 for ( ;; ) {
|
|
|
2314 if (state[i].status == 0) {
|
|
|
2315 *buf++ = '-';
|
|
|
2316
|
|
|
2317 } else {
|
|
|
2318 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 if (++i == u->states.nelts) {
|
|
|
2322 return buf;
|
|
|
2323 }
|
|
|
2324
|
|
|
2325 *buf++ = ',';
|
|
|
2326 *buf++ = ' ';
|
|
|
2327 }
|
|
|
2328 }
|
|
|
2329
|
|
|
2330
|
|
122
|
2331 static size_t
|
|
|
2332 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2333 uintptr_t data)
|
|
|
2334 {
|
|
|
2335 if (r->upstream) {
|
|
|
2336 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2337 }
|
|
|
2338
|
|
|
2339 return 1;
|
|
|
2340 }
|
|
|
2341
|
|
|
2342
|
|
58
|
2343 static u_char *
|
|
112
|
2344 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2345 ngx_http_log_op_t *op)
|
|
|
2346 {
|
|
|
2347 ngx_uint_t i;
|
|
|
2348 ngx_http_upstream_t *u;
|
|
|
2349 ngx_http_upstream_state_t *state;
|
|
|
2350
|
|
|
2351 u = r->upstream;
|
|
|
2352
|
|
122
|
2353 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2354 *buf = '-';
|
|
|
2355 return buf + 1;
|
|
|
2356 }
|
|
|
2357
|
|
|
2358 i = 0;
|
|
|
2359 state = u->states.elts;
|
|
|
2360
|
|
|
2361 for ( ;; ) {
|
|
|
2362 if (state[i].status == 0) {
|
|
|
2363 *buf++ = '-';
|
|
|
2364
|
|
|
2365 } else {
|
|
|
2366 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2367 state[i].response_time / 1000,
|
|
|
2368 state[i].response_time % 1000);
|
|
|
2369 }
|
|
|
2370
|
|
|
2371 if (++i == u->states.nelts) {
|
|
|
2372 return buf;
|
|
|
2373 }
|
|
|
2374
|
|
|
2375 *buf++ = ',';
|
|
|
2376 *buf++ = ' ';
|
|
|
2377 }
|
|
|
2378 }
|
|
|
2379
|
|
|
2380
|
|
|
2381 static u_char *
|
|
58
|
2382 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2383 {
|
|
|
2384 u_char *p;
|
|
|
2385 ngx_http_upstream_t *u;
|
|
|
2386 ngx_peer_connection_t *peer;
|
|
|
2387
|
|
|
2388 u = r->upstream;
|
|
|
2389 peer = &u->peer;
|
|
|
2390
|
|
|
2391 p = ngx_snprintf(buf, len,
|
|
58
|
2392 ", server: %V, URL: \"%V\","
|
|
118
|
2393 " upstream: \"%V%V%s%V\"",
|
|
52
|
2394 &r->server_name,
|
|
28
|
2395 &r->unparsed_uri,
|
|
58
|
2396 &u->conf->schema,
|
|
28
|
2397 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2398 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2399 &u->uri);
|
|
28
|
2400 len -= p - buf;
|
|
|
2401 buf = p;
|
|
|
2402
|
|
54
|
2403 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2404 }
|
|
|
2405
|
|
|
2406
|
|
36
|
2407 static ngx_int_t
|
|
122
|
2408 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2409 {
|
|
122
|
2410 ngx_http_variable_t *var, *v;
|
|
28
|
2411 ngx_http_log_op_name_t *op;
|
|
|
2412
|
|
122
|
2413 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2414 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2415 if (var == NULL) {
|
|
|
2416 return NGX_ERROR;
|
|
|
2417 }
|
|
|
2418
|
|
186
|
2419 var->get_handler = v->get_handler;
|
|
122
|
2420 var->data = v->data;
|
|
|
2421 }
|
|
|
2422
|
|
28
|
2423 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2424 op->run = NULL;
|
|
|
2425
|
|
|
2426 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2427 if (op->name.len == 0) {
|
|
|
2428 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2429 }
|
|
|
2430 }
|
|
|
2431
|
|
|
2432 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2433
|
|
|
2434 return NGX_OK;
|
|
|
2435 }
|
|
58
|
2436
|
|
|
2437
|
|
122
|
2438 static ngx_int_t
|
|
|
2439 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2440 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2441 {
|
|
|
2442 u_char *p;
|
|
|
2443 size_t len;
|
|
|
2444 ngx_uint_t i;
|
|
|
2445 ngx_http_upstream_t *u;
|
|
|
2446 ngx_http_upstream_state_t *state;
|
|
|
2447
|
|
|
2448 v->valid = 1;
|
|
|
2449 v->no_cachable = 0;
|
|
|
2450 v->not_found = 0;
|
|
|
2451
|
|
|
2452 u = r->upstream;
|
|
|
2453
|
|
|
2454 if (u == NULL || u->states.nelts == 0) {
|
|
|
2455 v->not_found = 1;
|
|
|
2456 return NGX_OK;
|
|
|
2457 }
|
|
|
2458
|
|
|
2459 len = u->states.nelts * (3 + 2);
|
|
|
2460
|
|
|
2461 p = ngx_palloc(r->pool, len);
|
|
|
2462 if (p == NULL) {
|
|
|
2463 return NGX_ERROR;
|
|
|
2464 }
|
|
|
2465
|
|
|
2466 v->data = p;
|
|
|
2467
|
|
|
2468 i = 0;
|
|
|
2469 state = u->states.elts;
|
|
|
2470
|
|
|
2471 for ( ;; ) {
|
|
|
2472 if (state[i].status == 0) {
|
|
|
2473 *p++ = '-';
|
|
|
2474
|
|
|
2475 } else {
|
|
|
2476 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2477 }
|
|
|
2478
|
|
|
2479 if (++i == u->states.nelts) {
|
|
|
2480 break;
|
|
|
2481 }
|
|
|
2482
|
|
|
2483 *p++ = ',';
|
|
|
2484 *p++ = ' ';
|
|
|
2485 }
|
|
|
2486
|
|
|
2487 v->len = p - v->data;
|
|
|
2488
|
|
|
2489 return NGX_OK;
|
|
|
2490 }
|
|
|
2491
|
|
|
2492
|
|
|
2493 static ngx_int_t
|
|
|
2494 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2495 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2496 {
|
|
|
2497 u_char *p;
|
|
|
2498 size_t len;
|
|
|
2499 ngx_uint_t i;
|
|
|
2500 ngx_http_upstream_t *u;
|
|
|
2501 ngx_http_upstream_state_t *state;
|
|
|
2502
|
|
|
2503 v->valid = 1;
|
|
|
2504 v->no_cachable = 0;
|
|
|
2505 v->not_found = 0;
|
|
|
2506
|
|
|
2507 u = r->upstream;
|
|
|
2508
|
|
|
2509 if (u == NULL || u->states.nelts == 0) {
|
|
|
2510 v->not_found = 1;
|
|
|
2511 return NGX_OK;
|
|
|
2512 }
|
|
|
2513
|
|
|
2514 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2515
|
|
|
2516 p = ngx_palloc(r->pool, len);
|
|
|
2517 if (p == NULL) {
|
|
|
2518 return NGX_ERROR;
|
|
|
2519 }
|
|
|
2520
|
|
|
2521 v->data = p;
|
|
|
2522
|
|
|
2523 i = 0;
|
|
|
2524 state = u->states.elts;
|
|
|
2525
|
|
|
2526 for ( ;; ) {
|
|
|
2527 if (state[i].status == 0) {
|
|
|
2528 *p++ = '-';
|
|
|
2529
|
|
|
2530 } else {
|
|
|
2531 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2532 state[i].response_time / 1000,
|
|
|
2533 state[i].response_time % 1000);
|
|
|
2534 }
|
|
|
2535
|
|
|
2536 if (++i == u->states.nelts) {
|
|
|
2537 break;
|
|
|
2538 }
|
|
|
2539
|
|
|
2540 *p++ = ',';
|
|
|
2541 *p++ = ' ';
|
|
|
2542 }
|
|
|
2543
|
|
|
2544 v->len = p - v->data;
|
|
|
2545
|
|
|
2546 return NGX_OK;
|
|
|
2547 }
|
|
|
2548
|
|
|
2549
|
|
58
|
2550 static void *
|
|
|
2551 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2552 {
|
|
|
2553 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2554
|
|
|
2555 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2556 if (umcf == NULL) {
|
|
|
2557 return NULL;
|
|
|
2558 }
|
|
|
2559
|
|
|
2560 return umcf;
|
|
|
2561 }
|
|
|
2562
|
|
|
2563
|
|
|
2564 static char *
|
|
|
2565 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
2566 {
|
|
|
2567 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2568
|
|
198
|
2569 ngx_array_t headers_in;
|
|
|
2570 ngx_hash_key_t *hk;
|
|
|
2571 ngx_hash_init_t hash;
|
|
|
2572 ngx_http_upstream_header_t *header;
|
|
|
2573
|
|
|
2574 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
2575 != NGX_OK)
|
|
58
|
2576 {
|
|
|
2577 return NGX_CONF_ERROR;
|
|
|
2578 }
|
|
|
2579
|
|
198
|
2580 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
2581 hk = ngx_array_push(&headers_in);
|
|
|
2582 if (hk == NULL) {
|
|
|
2583 return NGX_CONF_ERROR;
|
|
|
2584 }
|
|
|
2585
|
|
|
2586 hk->key = header->name;
|
|
|
2587 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
2588 hk->value = header;
|
|
|
2589 }
|
|
|
2590
|
|
|
2591 hash.hash = &umcf->headers_in_hash;
|
|
|
2592 hash.key = ngx_hash_key_lc;
|
|
|
2593 hash.max_size = 512;
|
|
|
2594 hash.bucket_size = ngx_cacheline_size;
|
|
|
2595 hash.name = "upstream_headers_in_hash";
|
|
|
2596 hash.pool = cf->pool;
|
|
|
2597 hash.temp_pool = NULL;
|
|
|
2598
|
|
|
2599 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
2600 return NGX_CONF_ERROR;
|
|
|
2601 }
|
|
58
|
2602
|
|
|
2603 return NGX_CONF_OK;
|
|
|
2604 }
|
