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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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58
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50 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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52 static ngx_int_t
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53 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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55 static ngx_int_t
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56 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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57 ngx_table_elt_t *h, ngx_uint_t offset);
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58 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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59 ngx_table_elt_t *h, ngx_uint_t offset);
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60 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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61 ngx_table_elt_t *h, ngx_uint_t offset);
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62 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 #if (NGX_HTTP_GZIP)
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67 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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68 ngx_table_elt_t *h, ngx_uint_t offset);
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69 #endif
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70
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28
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71 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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72 uintptr_t data);
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73 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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74 u_char *buf, ngx_http_log_op_t *op);
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122
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75 static size_t ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
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76 uintptr_t data);
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112
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77 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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78 u_char *buf, ngx_http_log_op_t *op);
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28
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79
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58
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80 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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81 size_t len);
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122
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82
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83 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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84 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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85 ngx_http_variable_value_t *v, uintptr_t data);
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86 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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87 ngx_http_variable_value_t *v, uintptr_t data);
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88
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58
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89 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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90 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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91
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126
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92 #if (NGX_HTTP_SSL)
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140
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93 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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94 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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95 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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96 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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97 ngx_peer_t *peer);
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98 #endif
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99
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58
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100
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101 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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102
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103 { ngx_string("Status"),
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104 ngx_http_upstream_process_header_line,
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105 offsetof(ngx_http_upstream_headers_in_t, status),
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64
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106 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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107
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108 { ngx_string("Content-Type"),
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109 ngx_http_upstream_process_header_line,
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110 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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111 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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112
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113 { ngx_string("Content-Length"),
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114 ngx_http_upstream_process_header_line,
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115 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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116 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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117
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118 { ngx_string("Date"),
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119 ngx_http_upstream_process_header_line,
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120 offsetof(ngx_http_upstream_headers_in_t, date),
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121 ngx_http_upstream_conditional_copy_header_line,
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64
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122 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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58
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123
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124 { ngx_string("Server"),
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125 ngx_http_upstream_process_header_line,
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126 offsetof(ngx_http_upstream_headers_in_t, server),
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127 ngx_http_upstream_conditional_copy_header_line,
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64
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128 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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58
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129
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78
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130 { ngx_string("WWW-Authenticate"),
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131 ngx_http_upstream_process_header_line,
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132 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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133 ngx_http_upstream_copy_header_line, 0, 0 },
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134
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58
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135 { ngx_string("Location"),
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136 ngx_http_upstream_ignore_header_line, 0,
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64
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137 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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138
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139 { ngx_string("Refresh"),
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140 ngx_http_upstream_ignore_header_line, 0,
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64
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141 ngx_http_upstream_rewrite_refresh, 0, 0 },
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142
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143 { ngx_string("Set-Cookie"),
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144 ngx_http_upstream_ignore_header_line, 0,
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80
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145 ngx_http_upstream_copy_header_line, 0, 1 },
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146
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147 { ngx_string("Content-Disposition"),
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148 ngx_http_upstream_ignore_header_line, 0,
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149 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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150
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151 { ngx_string("Cache-Control"),
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152 ngx_http_upstream_process_multi_header_lines,
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153 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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154 ngx_http_upstream_copy_multi_header_lines,
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64
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155 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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156
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122
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157 { ngx_string("Expires"),
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158 ngx_http_upstream_process_header_line,
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159 offsetof(ngx_http_upstream_headers_in_t, expires),
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160 ngx_http_upstream_copy_header_line,
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161 offsetof(ngx_http_headers_out_t, expires), 1 },
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162
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126
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163 { ngx_string("Accept-Ranges"),
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164 ngx_http_upstream_process_header_line,
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165 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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166 ngx_http_upstream_copy_header_line,
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167 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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168
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58
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169 { ngx_string("Connection"),
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170 ngx_http_upstream_ignore_header_line, 0,
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64
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171 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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172
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173 { ngx_string("X-Pad"),
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174 ngx_http_upstream_ignore_header_line, 0,
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64
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175 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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176
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177 { ngx_string("X-Powered-By"),
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178 ngx_http_upstream_ignore_header_line, 0,
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179 ngx_http_upstream_conditional_copy_header_line,
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64
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180 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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58
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181
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182 { ngx_string("X-Accel-Expires"),
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183 ngx_http_upstream_process_header_line,
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184 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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185 ngx_http_upstream_conditional_copy_header_line,
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64
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186 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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187
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188 { ngx_string("X-Accel-Redirect"),
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189 ngx_http_upstream_process_header_line,
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190 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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191 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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192
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76
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193 { ngx_string("X-Accel-Limit-Rate"),
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194 ngx_http_upstream_process_limit_rate, 0,
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195 ngx_http_upstream_ignore_header_line, 0, 0 },
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196
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58
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197 #if (NGX_HTTP_GZIP)
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198 { ngx_string("Content-Encoding"),
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199 ngx_http_upstream_process_header_line,
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200 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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201 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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202 #endif
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203
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64
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204 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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205 };
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28
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206
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207
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208 ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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209 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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210 NULL, /* postconfiguration */
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211
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212 ngx_http_upstream_create_main_conf, /* create main configuration */
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213 ngx_http_core_init_main_conf, /* init main configuration */
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28
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214
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215 NULL, /* create server configuration */
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216 NULL, /* merge server configuration */
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217
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218 NULL, /* create location configuration */
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219 NULL /* merge location configuration */
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220 };
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126
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221
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28
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222
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223 ngx_module_t ngx_http_upstream_module = {
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58
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224 NGX_MODULE_V1,
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28
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225 &ngx_http_upstream_module_ctx, /* module context */
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226 NULL, /* module directives */
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227 NGX_HTTP_MODULE, /* module type */
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90
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228 NULL, /* init master */
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28
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229 NULL, /* init module */
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90
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230 NULL, /* init process */
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231 NULL, /* init thread */
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232 NULL, /* exit thread */
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233 NULL, /* exit process */
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234 NULL, /* exit master */
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235 NGX_MODULE_V1_PADDING
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28
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236 };
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237
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238
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132
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239 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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240 { ngx_string("upstream_status"), 0, NULL,
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122
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241 ngx_http_upstream_log_status_getlen,
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242 ngx_http_upstream_log_status },
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243 { ngx_string("upstream_response_time"), 0, NULL,
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244 ngx_http_upstream_log_response_time_getlen,
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245 ngx_http_upstream_log_response_time },
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28
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246 { ngx_null_string, 0, NULL, NULL, NULL }
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247 };
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248
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249
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122
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250 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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251
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252 { ngx_string("upstream_status"),
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132
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253 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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254
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255 { ngx_string("upstream_response_time"),
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132
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256 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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257
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258 { ngx_null_string, NULL, 0, 0, 0 }
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259 };
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260
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261
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28
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262 char *ngx_http_upstream_header_errors[] = {
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263 "upstream sent invalid header",
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264 "upstream sent too long header line"
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265 };
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266
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267
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36
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268 void
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269 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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270 {
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112
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271 ngx_time_t *tp;
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58
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272 ngx_connection_t *c;
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118
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273 ngx_http_cleanup_t *cln;
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58
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274 ngx_http_upstream_t *u;
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275 ngx_http_core_loc_conf_t *clcf;
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28
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276
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277 c = r->connection;
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278
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279 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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280 "http init upstream, client timer: %d", c->read->timer_set);
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281
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282 if (c->read->timer_set) {
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283 ngx_del_timer(c->read);
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284 }
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285
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58
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286 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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80
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287 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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126
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288
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28
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289 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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290
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291 if (!c->write->active) {
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80
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292 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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293 == NGX_ERROR)
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28
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294 {
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295 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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296 return;
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297 }
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298 }
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299 }
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300
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301 u = r->upstream;
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302
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86
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303 if (r->request_body) {
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304 u->request_bufs = r->request_body->bufs;
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305 }
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58
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306
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86
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307 if (u->create_request(r) != NGX_OK) {
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28
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308 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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309 return;
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310 }
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311
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312 u->peer.log = r->connection->log;
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58
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313 u->saved_log_handler = r->log_handler;
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314 r->log_handler = ngx_http_upstream_log_error;
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315
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316 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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317
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318 u->output.sendfile = r->connection->sendfile;
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|
319 u->output.pool = r->pool;
|
|
|
320 u->output.bufs.num = 1;
|
|
58
|
321 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
322 u->output.output_filter = ngx_chain_writer;
|
|
|
323 u->output.filter_ctx = &u->writer;
|
|
|
324
|
|
|
325 u->writer.pool = r->pool;
|
|
|
326
|
|
|
327 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
328 sizeof(ngx_http_upstream_state_t))
|
|
|
329 != NGX_OK)
|
|
28
|
330 {
|
|
|
331 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
332 return;
|
|
|
333 }
|
|
|
334
|
|
50
|
335 u->state = ngx_array_push(&u->states);
|
|
|
336 if (u->state == NULL) {
|
|
28
|
337 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
338 return;
|
|
|
339 }
|
|
|
340
|
|
|
341 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
342
|
|
112
|
343 tp = ngx_timeofday();
|
|
|
344
|
|
|
345 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
346
|
|
142
|
347 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
348 if (cln == NULL) {
|
|
|
349 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
350 return;
|
|
|
351 }
|
|
|
352
|
|
|
353 cln->handler = ngx_http_upstream_cleanup;
|
|
|
354 cln->data = r;
|
|
|
355 u->cleanup = &cln->handler;
|
|
|
356
|
|
28
|
357 ngx_http_upstream_connect(r, u);
|
|
|
358 }
|
|
|
359
|
|
|
360
|
|
36
|
361 static void
|
|
58
|
362 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
363 {
|
|
|
364 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
365 }
|
|
|
366
|
|
|
367
|
|
|
368 static void
|
|
|
369 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
370 {
|
|
|
371 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
372 }
|
|
|
373
|
|
|
374
|
|
|
375 static void
|
|
|
376 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
377 ngx_event_t *ev)
|
|
28
|
378 {
|
|
|
379 int n;
|
|
|
380 char buf[1];
|
|
126
|
381 ngx_err_t err;
|
|
28
|
382 ngx_connection_t *c;
|
|
|
383 ngx_http_upstream_t *u;
|
|
|
384
|
|
76
|
385 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
386 "http upstream check client, write event:%d, \"%V\"",
|
|
|
387 ev->write, &r->uri);
|
|
28
|
388
|
|
58
|
389 c = r->connection;
|
|
32
|
390 u = r->upstream;
|
|
|
391
|
|
132
|
392 if (c->error) {
|
|
76
|
393 ngx_http_upstream_finalize_request(r, u,
|
|
|
394 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
395 return;
|
|
|
396 }
|
|
|
397
|
|
32
|
398 if (u->peer.connection == NULL) {
|
|
|
399 return;
|
|
|
400 }
|
|
|
401
|
|
28
|
402 #if (NGX_HAVE_KQUEUE)
|
|
|
403
|
|
|
404 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
405
|
|
|
406 if (!ev->pending_eof) {
|
|
|
407 return;
|
|
|
408 }
|
|
|
409
|
|
|
410 ev->eof = 1;
|
|
132
|
411 c->error = 1;
|
|
28
|
412
|
|
|
413 if (ev->kq_errno) {
|
|
|
414 ev->error = 1;
|
|
|
415 }
|
|
|
416
|
|
|
417 if (!u->cachable && u->peer.connection) {
|
|
|
418 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
419 "kevent() reported that client closed prematurely "
|
|
|
420 "connection, so upstream connection is closed too");
|
|
28
|
421 ngx_http_upstream_finalize_request(r, u,
|
|
|
422 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
423 return;
|
|
|
424 }
|
|
|
425
|
|
|
426 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
427 "kevent() reported that client closed "
|
|
|
428 "prematurely connection");
|
|
|
429
|
|
|
430 if (u->peer.connection == NULL) {
|
|
|
431 ngx_http_upstream_finalize_request(r, u,
|
|
|
432 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
433 return;
|
|
|
434 }
|
|
|
435
|
|
|
436 return;
|
|
|
437 }
|
|
|
438
|
|
|
439 #endif
|
|
|
440
|
|
|
441 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
442
|
|
|
443 err = ngx_socket_errno;
|
|
|
444
|
|
|
445 /*
|
|
|
446 * we do not need to disable the write event because
|
|
|
447 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
448 */
|
|
|
449
|
|
|
450 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
451 return;
|
|
|
452 }
|
|
|
453
|
|
|
454 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
455 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
456 ngx_http_upstream_finalize_request(r, u,
|
|
|
457 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
458 return;
|
|
|
459 }
|
|
|
460 }
|
|
|
461
|
|
|
462 if (n > 0) {
|
|
|
463 return;
|
|
|
464 }
|
|
|
465
|
|
|
466 if (n == -1) {
|
|
|
467 if (err == NGX_EAGAIN) {
|
|
|
468 return;
|
|
|
469 }
|
|
|
470
|
|
|
471 ev->error = 1;
|
|
|
472
|
|
32
|
473 } else { /* n == 0 */
|
|
28
|
474 err = 0;
|
|
|
475 }
|
|
|
476
|
|
78
|
477 ev->eof = 1;
|
|
132
|
478 c->error = 1;
|
|
78
|
479
|
|
28
|
480 if (!u->cachable && u->peer.connection) {
|
|
|
481 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
482 "client closed prematurely connection, "
|
|
|
483 "so upstream connection is closed too");
|
|
|
484 ngx_http_upstream_finalize_request(r, u,
|
|
|
485 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
486 return;
|
|
|
487 }
|
|
|
488
|
|
|
489 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
490 "client closed prematurely connection");
|
|
|
491
|
|
|
492 if (u->peer.connection == NULL) {
|
|
|
493 ngx_http_upstream_finalize_request(r, u,
|
|
|
494 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
495 return;
|
|
|
496 }
|
|
|
497 }
|
|
|
498
|
|
|
499
|
|
36
|
500 static void
|
|
|
501 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
502 {
|
|
140
|
503 ngx_int_t rc;
|
|
|
504 ngx_connection_t *c;
|
|
28
|
505
|
|
32
|
506 r->connection->log->action = "connecting to upstream";
|
|
28
|
507
|
|
|
508 r->connection->single_connection = 0;
|
|
|
509
|
|
|
510 rc = ngx_event_connect_peer(&u->peer);
|
|
|
511
|
|
|
512 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
513 "http upstream connect: %i", rc);
|
|
|
514
|
|
|
515 if (rc == NGX_ERROR) {
|
|
|
516 ngx_http_upstream_finalize_request(r, u,
|
|
|
517 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
518 return;
|
|
|
519 }
|
|
|
520
|
|
140
|
521 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
28
|
522
|
|
92
|
523 if (rc == NGX_BUSY) {
|
|
|
524 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
525 }
|
|
|
526
|
|
|
527 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
528 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
529 return;
|
|
|
530 }
|
|
|
531
|
|
126
|
532 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
533
|
|
28
|
534 c = u->peer.connection;
|
|
|
535
|
|
|
536 c->data = r;
|
|
140
|
537
|
|
58
|
538 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
539 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
540
|
|
|
541 c->sendfile = r->connection->sendfile;
|
|
|
542
|
|
|
543 c->pool = r->pool;
|
|
|
544 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
545
|
|
|
546 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
547
|
|
|
548 u->writer.out = NULL;
|
|
|
549 u->writer.last = &u->writer.out;
|
|
|
550 u->writer.connection = c;
|
|
|
551 u->writer.limit = 0;
|
|
|
552
|
|
|
553 if (u->request_sent) {
|
|
58
|
554 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
555 ngx_http_upstream_finalize_request(r, u,
|
|
|
556 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
557 return;
|
|
|
558 }
|
|
28
|
559 }
|
|
|
560
|
|
146
|
561 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
122
|
562
|
|
|
563 /*
|
|
|
564 * the r->request_body->buf can be reused for one request only,
|
|
|
565 * the subrequests should allocate their own temporay bufs
|
|
|
566 */
|
|
|
567
|
|
|
568 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
569 if (u->output.free == NULL) {
|
|
|
570 ngx_http_upstream_finalize_request(r, u,
|
|
|
571 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
572 return;
|
|
28
|
573 }
|
|
122
|
574
|
|
|
575 u->output.free->buf = r->request_body->buf;
|
|
|
576 u->output.free->next = NULL;
|
|
|
577 u->output.allocated = 1;
|
|
|
578
|
|
|
579 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
580 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
581 r->request_body->buf->tag = u->output.tag;
|
|
28
|
582 }
|
|
|
583
|
|
|
584 u->request_sent = 0;
|
|
|
585
|
|
|
586 if (rc == NGX_AGAIN) {
|
|
|
587 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
588 return;
|
|
|
589 }
|
|
|
590
|
|
126
|
591 #if (NGX_HTTP_SSL)
|
|
|
592
|
|
140
|
593 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
594 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
595 return;
|
|
|
596 }
|
|
|
597
|
|
|
598 #endif
|
|
|
599
|
|
28
|
600 ngx_http_upstream_send_request(r, u);
|
|
|
601 }
|
|
|
602
|
|
|
603
|
|
126
|
604 #if (NGX_HTTP_SSL)
|
|
|
605
|
|
|
606 static void
|
|
140
|
607 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
608 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
609 {
|
|
|
610 ngx_int_t rc;
|
|
|
611 ngx_peer_t *peer;
|
|
|
612
|
|
|
613 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
614 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
615 == NGX_ERROR)
|
|
|
616 {
|
|
|
617 ngx_http_upstream_finalize_request(r, u,
|
|
|
618 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
619 return;
|
|
|
620 }
|
|
|
621
|
|
|
622 c->sendfile = 0;
|
|
|
623
|
|
|
624 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
625
|
|
|
626 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
627 ngx_http_upstream_finalize_request(r, u,
|
|
|
628 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
629 return;
|
|
|
630 }
|
|
|
631
|
|
|
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) {
|
|
32
|
858 c->log->action = "sending request to upstream";
|
|
28
|
859 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
860 return;
|
|
|
861 }
|
|
|
862
|
|
140
|
863 #if (NGX_HTTP_SSL)
|
|
|
864
|
|
|
865 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
866 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
867 return;
|
|
|
868 }
|
|
|
869
|
|
|
870 #endif
|
|
|
871
|
|
28
|
872 ngx_http_upstream_send_request(r, u);
|
|
|
873 }
|
|
|
874
|
|
|
875
|
|
36
|
876 static void
|
|
|
877 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
878 {
|
|
64
|
879 ssize_t n;
|
|
|
880 ngx_int_t rc;
|
|
122
|
881 ngx_str_t *uri, args;
|
|
|
882 ngx_uint_t i, key, flags;
|
|
64
|
883 ngx_list_part_t *part;
|
|
|
884 ngx_table_elt_t *h;
|
|
|
885 ngx_connection_t *c;
|
|
|
886 ngx_http_request_t *r;
|
|
|
887 ngx_http_upstream_t *u;
|
|
|
888 ngx_http_err_page_t *err_page;
|
|
|
889 ngx_http_core_loc_conf_t *clcf;
|
|
|
890 ngx_http_upstream_header_t *hh;
|
|
|
891 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
892
|
|
|
893 c = rev->data;
|
|
|
894 r = c->data;
|
|
|
895 u = r->upstream;
|
|
|
896
|
|
|
897 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
898 "http upstream process header");
|
|
28
|
899
|
|
32
|
900 c->log->action = "reading response header from upstream";
|
|
28
|
901
|
|
|
902 if (rev->timedout) {
|
|
|
903 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
904 return;
|
|
|
905 }
|
|
126
|
906
|
|
130
|
907 if (u->buffer.start == NULL) {
|
|
|
908 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
909 if (u->buffer.start == NULL) {
|
|
28
|
910 ngx_http_upstream_finalize_request(r, u,
|
|
|
911 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
912 return;
|
|
|
913 }
|
|
|
914
|
|
130
|
915 u->buffer.pos = u->buffer.start;
|
|
|
916 u->buffer.last = u->buffer.start;
|
|
|
917 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
918 u->buffer.temporary = 1;
|
|
|
919
|
|
|
920 u->buffer.tag = u->output.tag;
|
|
28
|
921
|
|
58
|
922 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
923 sizeof(ngx_table_elt_t))
|
|
|
924 != NGX_OK)
|
|
58
|
925 {
|
|
|
926 ngx_http_upstream_finalize_request(r, u,
|
|
|
927 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
928 return;
|
|
|
929 }
|
|
|
930
|
|
28
|
931 #if 0
|
|
|
932 if (u->cache) {
|
|
130
|
933 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
934 u->buffer.last = u->buffer.pos;
|
|
28
|
935 }
|
|
|
936 #endif
|
|
|
937 }
|
|
|
938
|
|
130
|
939 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
940 u->buffer.end - u->buffer.last);
|
|
28
|
941
|
|
|
942 if (n == NGX_AGAIN) {
|
|
|
943 #if 0
|
|
|
944 ngx_add_timer(rev, u->read_timeout);
|
|
|
945 #endif
|
|
|
946
|
|
|
947 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
948 ngx_http_upstream_finalize_request(r, u,
|
|
|
949 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
950 return;
|
|
|
951 }
|
|
|
952
|
|
|
953 return;
|
|
|
954 }
|
|
|
955
|
|
|
956 if (n == 0) {
|
|
|
957 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
958 "upstream prematurely closed connection");
|
|
|
959 }
|
|
|
960
|
|
|
961 if (n == NGX_ERROR || n == 0) {
|
|
|
962 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
963 return;
|
|
|
964 }
|
|
|
965
|
|
130
|
966 u->buffer.last += n;
|
|
28
|
967
|
|
|
968 #if 0
|
|
|
969 u->valid_header_in = 0;
|
|
|
970
|
|
|
971 u->peer.cached = 0;
|
|
|
972 #endif
|
|
|
973
|
|
|
974 rc = u->process_header(r);
|
|
|
975
|
|
|
976 if (rc == NGX_AGAIN) {
|
|
|
977 #if 0
|
|
|
978 ngx_add_timer(rev, u->read_timeout);
|
|
|
979 #endif
|
|
|
980
|
|
130
|
981 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
982 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
983 "upstream sent too big header");
|
|
|
984
|
|
|
985 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
986 return;
|
|
|
987 }
|
|
|
988
|
|
|
989 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
990 ngx_http_upstream_finalize_request(r, u,
|
|
|
991 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
992 return;
|
|
|
993 }
|
|
|
994
|
|
|
995 return;
|
|
|
996 }
|
|
|
997
|
|
|
998 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
999 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1000 return;
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1004 ngx_http_upstream_finalize_request(r, u,
|
|
|
1005 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 /* rc == NGX_OK */
|
|
|
1010
|
|
78
|
1011 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1012
|
|
|
1013 if (u->peer.tries > 1
|
|
|
1014 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1015 {
|
|
|
1016 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1017 return;
|
|
|
1018 }
|
|
|
1019
|
|
|
1020 #if (NGX_HTTP_CACHE)
|
|
|
1021
|
|
|
1022 if (u->peer.tries == 0
|
|
|
1023 && u->stale
|
|
|
1024 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1025 {
|
|
|
1026 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1027 ngx_http_send_cached_response(r));
|
|
58
|
1028 return;
|
|
|
1029 }
|
|
|
1030
|
|
|
1031 #endif
|
|
|
1032 }
|
|
|
1033
|
|
146
|
1034 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1035
|
|
|
1036 if (u->peer.tries > 1
|
|
|
1037 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1038 {
|
|
|
1039 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1040 return;
|
|
|
1041 }
|
|
|
1042
|
|
|
1043 if (u->conf->redirect_404) {
|
|
|
1044 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1045 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1046 return;
|
|
|
1047 }
|
|
58
|
1048 }
|
|
|
1049
|
|
|
1050
|
|
78
|
1051 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
1052 && u->conf->redirect_errors
|
|
|
1053 && r->err_ctx == NULL)
|
|
|
1054 {
|
|
|
1055 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1056
|
|
|
1057 if (clcf->error_pages) {
|
|
|
1058
|
|
|
1059 err_page = clcf->error_pages->elts;
|
|
|
1060 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1061 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1062
|
|
|
1063 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1064
|
|
|
1065 r->headers_out.www_authenticate =
|
|
|
1066 ngx_list_push(&r->headers_out.headers);
|
|
|
1067
|
|
|
1068 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1069 ngx_http_upstream_finalize_request(r, u,
|
|
|
1070 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1071 return;
|
|
|
1072 }
|
|
|
1073
|
|
126
|
1074 *r->headers_out.www_authenticate =
|
|
78
|
1075 *u->headers_in.www_authenticate;
|
|
|
1076 }
|
|
|
1077
|
|
36
|
1078 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1079 u->headers_in.status_n);
|
|
36
|
1080 return;
|
|
|
1081 }
|
|
|
1082 }
|
|
|
1083 }
|
|
|
1084 }
|
|
|
1085
|
|
64
|
1086 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1087 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1088
|
|
|
1089 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1090 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1091
|
|
|
1092 part = &r->upstream->headers_in.headers.part;
|
|
|
1093 h = part->elts;
|
|
|
1094
|
|
|
1095 for (i = 0; /* void */; i++) {
|
|
|
1096
|
|
|
1097 if (i >= part->nelts) {
|
|
|
1098 if (part->next == NULL) {
|
|
|
1099 break;
|
|
|
1100 }
|
|
126
|
1101
|
|
64
|
1102 part = part->next;
|
|
|
1103 h = part->elts;
|
|
|
1104 i = 0;
|
|
|
1105 }
|
|
|
1106
|
|
|
1107 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1108
|
|
|
1109 if (hh[key].redirect
|
|
|
1110 && hh[key].name.len == h[i].key.len
|
|
|
1111 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1112 {
|
|
|
1113 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1114 ngx_http_upstream_finalize_request(r, u,
|
|
|
1115 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1116 return;
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 }
|
|
|
1120 }
|
|
|
1121
|
|
122
|
1122 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1123 args.len = 0;
|
|
|
1124 args.data = NULL;
|
|
|
1125 flags = 0;
|
|
|
1126
|
|
|
1127 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1128 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1129 return;
|
|
|
1130 }
|
|
|
1131
|
|
|
1132 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1133 r->zero_in_uri = 1;
|
|
|
1134 }
|
|
|
1135
|
|
|
1136 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1137 return;
|
|
|
1138 }
|
|
|
1139
|
|
28
|
1140 ngx_http_upstream_send_response(r, u);
|
|
|
1141 }
|
|
|
1142
|
|
|
1143
|
|
36
|
1144 static void
|
|
|
1145 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1146 {
|
|
132
|
1147 int tcp_nodelay;
|
|
130
|
1148 ssize_t size;
|
|
58
|
1149 ngx_int_t rc;
|
|
|
1150 ngx_uint_t i, key;
|
|
|
1151 ngx_list_part_t *part;
|
|
|
1152 ngx_table_elt_t *h;
|
|
|
1153 ngx_event_pipe_t *p;
|
|
132
|
1154 ngx_connection_t *c;
|
|
112
|
1155 ngx_pool_cleanup_t *cl;
|
|
|
1156 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1157 ngx_http_core_loc_conf_t *clcf;
|
|
|
1158 ngx_http_upstream_header_t *hh;
|
|
|
1159 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1160
|
|
|
1161 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1162 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1163
|
|
|
1164 part = &r->upstream->headers_in.headers.part;
|
|
|
1165 h = part->elts;
|
|
|
1166
|
|
|
1167 for (i = 0; /* void */; i++) {
|
|
28
|
1168
|
|
58
|
1169 if (i >= part->nelts) {
|
|
|
1170 if (part->next == NULL) {
|
|
|
1171 break;
|
|
|
1172 }
|
|
126
|
1173
|
|
58
|
1174 part = part->next;
|
|
|
1175 h = part->elts;
|
|
|
1176 i = 0;
|
|
|
1177 }
|
|
|
1178
|
|
|
1179 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1180
|
|
|
1181 if (hh[key].name.len == h[i].key.len
|
|
|
1182 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1183 {
|
|
|
1184 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1185 ngx_http_upstream_finalize_request(r, u,
|
|
|
1186 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1187 return;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 continue;
|
|
|
1191 }
|
|
|
1192
|
|
|
1193 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1194 ngx_http_upstream_finalize_request(r, u,
|
|
|
1195 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1196 return;
|
|
|
1197 }
|
|
|
1198 }
|
|
|
1199
|
|
78
|
1200 r->headers_out.status = u->headers_in.status_n;
|
|
|
1201 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1202
|
|
130
|
1203 if (r->headers_out.content_length_n != -1) {
|
|
|
1204 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1205
|
|
|
1206 } else {
|
|
|
1207 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1208 }
|
|
|
1209
|
|
58
|
1210 rc = ngx_http_send_header(r);
|
|
28
|
1211
|
|
34
|
1212 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
1213 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1214 return;
|
|
|
1215 }
|
|
|
1216
|
|
|
1217 u->header_sent = 1;
|
|
|
1218
|
|
122
|
1219 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1220 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1221 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1222 clf = cl->data;
|
|
|
1223
|
|
|
1224 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1225 cl->handler(clf);
|
|
|
1226 cl->handler = NULL;
|
|
|
1227 break;
|
|
|
1228 }
|
|
|
1229 }
|
|
|
1230 }
|
|
|
1231 }
|
|
|
1232
|
|
132
|
1233 c = r->connection;
|
|
|
1234
|
|
130
|
1235 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1236
|
|
|
1237 if (u->pipe == NULL) {
|
|
|
1238
|
|
|
1239 if (u->input_filter == NULL) {
|
|
|
1240 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1241 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1242 u->input_filter_ctx = r;
|
|
|
1243 }
|
|
|
1244
|
|
|
1245 u->peer.connection->read->handler =
|
|
|
1246 ngx_http_upstream_process_non_buffered_body;
|
|
|
1247 r->write_event_handler =
|
|
|
1248 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1249
|
|
|
1250 r->limit_rate = 0;
|
|
|
1251
|
|
|
1252 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1253 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1254 return;
|
|
|
1255 }
|
|
|
1256
|
|
132
|
1257 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1258 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1259
|
|
|
1260 tcp_nodelay = 1;
|
|
|
1261
|
|
|
1262 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1263 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1264 {
|
|
|
1265 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1266 "setsockopt(TCP_NODELAY) failed");
|
|
|
1267 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1268 return;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1272 }
|
|
|
1273
|
|
130
|
1274 size = u->buffer.last - u->buffer.pos;
|
|
|
1275
|
|
|
1276 if (size) {
|
|
|
1277 u->buffer.last = u->buffer.pos;
|
|
|
1278
|
|
|
1279 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1280 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1281 return;
|
|
|
1282 }
|
|
|
1283
|
|
132
|
1284 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1285
|
|
|
1286 } else {
|
|
|
1287 u->buffer.pos = u->buffer.start;
|
|
|
1288 u->buffer.last = u->buffer.start;
|
|
|
1289
|
|
|
1290 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1291 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1292 return;
|
|
|
1293 }
|
|
|
1294 }
|
|
|
1295
|
|
|
1296 return;
|
|
|
1297 }
|
|
|
1298
|
|
28
|
1299 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1300
|
|
|
1301 #if 0
|
|
|
1302
|
|
|
1303 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1304 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1305 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1306 ngx_close_file_n " \"%s\" failed",
|
|
|
1307 u->cache->ctx.file.name.data);
|
|
|
1308 }
|
|
|
1309 }
|
|
|
1310
|
|
|
1311 if (u->cachable) {
|
|
130
|
1312 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1313
|
|
|
1314 header->expires = u->cache->ctx.expires;
|
|
|
1315 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1316 header->date = u->cache->ctx.date;
|
|
|
1317 header->length = r->headers_out.content_length_n;
|
|
|
1318 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1319
|
|
|
1320 header->key_len = u->cache->ctx.key0.len;
|
|
|
1321 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1322 header->key[header->key_len] = LF;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 #endif
|
|
|
1326
|
|
130
|
1327 p = u->pipe;
|
|
28
|
1328
|
|
|
1329 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1330 p->output_ctx = r;
|
|
|
1331 p->tag = u->output.tag;
|
|
126
|
1332 p->bufs = u->conf->bufs;
|
|
28
|
1333 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1334 p->upstream = u->peer.connection;
|
|
132
|
1335 p->downstream = c;
|
|
28
|
1336 p->pool = r->pool;
|
|
132
|
1337 p->log = c->log;
|
|
126
|
1338
|
|
28
|
1339 p->cachable = u->cachable;
|
|
|
1340
|
|
50
|
1341 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1342 if (p->temp_file == NULL) {
|
|
28
|
1343 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1344 return;
|
|
|
1345 }
|
|
|
1346
|
|
|
1347 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1348 p->temp_file->file.log = c->log;
|
|
28
|
1349 p->temp_file->path = u->conf->temp_path;
|
|
|
1350 p->temp_file->pool = r->pool;
|
|
126
|
1351
|
|
28
|
1352 if (u->cachable) {
|
|
|
1353 p->temp_file->persistent = 1;
|
|
|
1354 } else {
|
|
|
1355 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1356 "to a temporary file";
|
|
|
1357 }
|
|
|
1358
|
|
|
1359 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1360 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1361
|
|
50
|
1362 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1363 if (p->preread_bufs == NULL) {
|
|
28
|
1364 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1365 return;
|
|
|
1366 }
|
|
130
|
1367 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1368 p->preread_bufs->next = NULL;
|
|
130
|
1369 u->buffer.recycled = 1;
|
|
|
1370
|
|
|
1371 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1372
|
|
|
1373 if (u->cachable) {
|
|
|
1374 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1375 if (p->buf_to_file == NULL) {
|
|
|
1376 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1377 return;
|
|
|
1378 }
|
|
130
|
1379 p->buf_to_file->pos = u->buffer.start;
|
|
|
1380 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1381 p->buf_to_file->temporary = 1;
|
|
|
1382 }
|
|
|
1383
|
|
|
1384 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1385 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1386 p->single_buf = 1;
|
|
|
1387 }
|
|
|
1388
|
|
|
1389 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1390 p->free_bufs = 1;
|
|
|
1391
|
|
|
1392 /*
|
|
130
|
1393 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1394 * as though these bytes were read
|
|
|
1395 */
|
|
130
|
1396 u->buffer.last = u->buffer.pos;
|
|
28
|
1397
|
|
|
1398 if (u->conf->cyclic_temp_file) {
|
|
|
1399
|
|
|
1400 /*
|
|
|
1401 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1402 * because the writing a new data may interfere with sendfile()
|
|
|
1403 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1404 */
|
|
|
1405
|
|
|
1406 p->cyclic_temp_file = 1;
|
|
132
|
1407 c->sendfile = 0;
|
|
28
|
1408
|
|
|
1409 } else {
|
|
|
1410 p->cyclic_temp_file = 0;
|
|
|
1411 }
|
|
|
1412
|
|
|
1413 p->read_timeout = u->conf->read_timeout;
|
|
|
1414 p->send_timeout = clcf->send_timeout;
|
|
|
1415 p->send_lowat = clcf->send_lowat;
|
|
|
1416
|
|
58
|
1417 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1418 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1419
|
|
|
1420 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1421 }
|
|
|
1422
|
|
|
1423
|
|
36
|
1424 static void
|
|
130
|
1425 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1426 {
|
|
|
1427 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1428 }
|
|
|
1429
|
|
|
1430
|
|
|
1431 static void
|
|
|
1432 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1433 {
|
|
|
1434 size_t size;
|
|
|
1435 ssize_t n;
|
|
|
1436 ngx_buf_t *b;
|
|
132
|
1437 ngx_int_t rc;
|
|
130
|
1438 ngx_uint_t do_write;
|
|
132
|
1439 ngx_connection_t *c, *client;
|
|
130
|
1440 ngx_http_request_t *r;
|
|
|
1441 ngx_http_upstream_t *u;
|
|
|
1442 ngx_http_core_loc_conf_t *clcf;
|
|
|
1443
|
|
|
1444 c = ev->data;
|
|
|
1445
|
|
|
1446 if (ev->write) {
|
|
|
1447 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1448 "http upstream process non buffered downstream");
|
|
|
1449 c->log->action = "sending to client";
|
|
|
1450
|
|
|
1451 } else {
|
|
|
1452 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1453 "http upstream process non buffered upstream");
|
|
|
1454 c->log->action = "reading upstream";
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 if (ev->timedout) {
|
|
|
1458 if (ev->write) {
|
|
|
1459 c->timedout = 1;
|
|
|
1460 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1461 "client timed out");
|
|
|
1462 } else {
|
|
|
1463 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1464 "upstream timed out");
|
|
|
1465 }
|
|
|
1466 }
|
|
|
1467
|
|
|
1468 r = c->data;
|
|
|
1469 u = r->upstream;
|
|
132
|
1470 client = r->connection;
|
|
130
|
1471
|
|
|
1472 b = &u->buffer;
|
|
|
1473
|
|
|
1474 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1475
|
|
|
1476 do_write = ev->write;
|
|
|
1477
|
|
|
1478 for ( ;; ) {
|
|
|
1479
|
|
|
1480 if (do_write) {
|
|
|
1481
|
|
|
1482 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1483 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1484
|
|
|
1485 if (client->destroyed) {
|
|
|
1486 return;
|
|
|
1487 }
|
|
|
1488
|
|
|
1489 if (rc == NGX_ERROR) {
|
|
130
|
1490 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1491 return;
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1495 &u->out_bufs, u->output.tag);
|
|
|
1496 }
|
|
|
1497
|
|
|
1498 if (u->busy_bufs == NULL) {
|
|
|
1499
|
|
|
1500 if (u->length == 0
|
|
|
1501 || u->peer.connection->read->eof
|
|
|
1502 || u->peer.connection->read->error)
|
|
|
1503 {
|
|
|
1504 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1505 return;
|
|
|
1506 }
|
|
|
1507
|
|
|
1508 b->pos = b->start;
|
|
|
1509 b->last = b->start;
|
|
|
1510 }
|
|
|
1511 }
|
|
|
1512
|
|
|
1513 size = b->end - b->last;
|
|
|
1514
|
|
|
1515 if (size > u->length) {
|
|
|
1516 size = u->length;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 if (size && u->peer.connection->read->ready) {
|
|
|
1520 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1521
|
|
|
1522 if (n == NGX_AGAIN) {
|
|
|
1523 break;
|
|
|
1524 }
|
|
|
1525
|
|
|
1526 if (n > 0) {
|
|
|
1527 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1528 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1529 return;
|
|
|
1530 }
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 do_write = 1;
|
|
|
1534
|
|
|
1535 continue;
|
|
|
1536 }
|
|
|
1537
|
|
|
1538 break;
|
|
|
1539 }
|
|
|
1540
|
|
132
|
1541 if (client->data == r) {
|
|
|
1542 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1543 == NGX_ERROR)
|
|
|
1544 {
|
|
|
1545 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1546 return;
|
|
|
1547 }
|
|
130
|
1548 }
|
|
|
1549
|
|
132
|
1550 if (client->write->active) {
|
|
|
1551 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1552
|
|
|
1553 } else if (client->write->timer_set) {
|
|
|
1554 ngx_del_timer(client->write);
|
|
130
|
1555 }
|
|
|
1556
|
|
|
1557 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1558 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1559 return;
|
|
|
1560 }
|
|
|
1561
|
|
|
1562 if (u->peer.connection->read->active) {
|
|
|
1563 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1564
|
|
132
|
1565 } else if (u->peer.connection->read->timer_set) {
|
|
|
1566 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1567 }
|
|
|
1568 }
|
|
|
1569
|
|
|
1570
|
|
|
1571 static ngx_int_t
|
|
|
1572 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1573 {
|
|
|
1574 return NGX_OK;
|
|
|
1575 }
|
|
|
1576
|
|
|
1577
|
|
|
1578 static ngx_int_t
|
|
|
1579 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1580 {
|
|
|
1581 ngx_http_request_t *r = data;
|
|
|
1582
|
|
|
1583 ngx_buf_t *b;
|
|
|
1584 ngx_chain_t *cl, **ll;
|
|
|
1585 ngx_http_upstream_t *u;
|
|
|
1586
|
|
|
1587 u = r->upstream;
|
|
|
1588
|
|
|
1589 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1590 ll = &cl->next;
|
|
|
1591 }
|
|
|
1592
|
|
|
1593 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1594 if (cl == NULL) {
|
|
|
1595 return NGX_ERROR;
|
|
|
1596 }
|
|
|
1597
|
|
|
1598 *ll = cl;
|
|
|
1599
|
|
|
1600 cl->buf->flush = 1;
|
|
|
1601 cl->buf->memory = 1;
|
|
|
1602
|
|
|
1603 b = &u->buffer;
|
|
|
1604
|
|
|
1605 cl->buf->pos = b->last;
|
|
|
1606 b->last += bytes;
|
|
|
1607 cl->buf->last = b->last;
|
|
|
1608
|
|
|
1609 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1610 return NGX_OK;
|
|
|
1611 }
|
|
|
1612
|
|
|
1613 u->length -= bytes;
|
|
|
1614
|
|
|
1615 return NGX_OK;
|
|
|
1616 }
|
|
|
1617
|
|
|
1618
|
|
|
1619 static void
|
|
58
|
1620 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1621 {
|
|
|
1622 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1623 }
|
|
|
1624
|
|
|
1625
|
|
|
1626 static void
|
|
36
|
1627 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1628 {
|
|
58
|
1629 ngx_event_pipe_t *p;
|
|
132
|
1630 ngx_connection_t *c, *downstream;
|
|
28
|
1631 ngx_http_request_t *r;
|
|
|
1632 ngx_http_upstream_t *u;
|
|
|
1633
|
|
|
1634 c = ev->data;
|
|
|
1635 r = c->data;
|
|
|
1636 u = r->upstream;
|
|
132
|
1637 downstream = r->connection;
|
|
28
|
1638
|
|
|
1639 if (ev->write) {
|
|
32
|
1640 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1641 "http upstream process downstream");
|
|
|
1642 c->log->action = "sending to client";
|
|
126
|
1643
|
|
28
|
1644 } else {
|
|
32
|
1645 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1646 "http upstream process upstream");
|
|
|
1647 c->log->action = "reading upstream";
|
|
28
|
1648 }
|
|
126
|
1649
|
|
130
|
1650 p = u->pipe;
|
|
28
|
1651
|
|
|
1652 if (ev->timedout) {
|
|
|
1653 if (ev->write) {
|
|
76
|
1654 if (ev->delayed) {
|
|
|
1655
|
|
|
1656 ev->timedout = 0;
|
|
|
1657 ev->delayed = 0;
|
|
|
1658
|
|
|
1659 if (!ev->ready) {
|
|
|
1660 ngx_add_timer(ev, p->send_timeout);
|
|
|
1661
|
|
|
1662 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1663 {
|
|
|
1664 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1665 return;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 return;
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1672
|
|
|
1673 if (downstream->destroyed) {
|
|
|
1674 return;
|
|
|
1675 }
|
|
|
1676
|
|
76
|
1677 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1678 return;
|
|
|
1679 }
|
|
|
1680
|
|
|
1681 } else {
|
|
|
1682 p->downstream_error = 1;
|
|
126
|
1683 c->timedout = 1;
|
|
76
|
1684 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1685 "client timed out");
|
|
|
1686 }
|
|
28
|
1687
|
|
|
1688 } else {
|
|
126
|
1689 p->upstream_error = 1;
|
|
28
|
1690 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1691 "upstream timed out");
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 } else {
|
|
76
|
1695 if (ev->write && ev->delayed) {
|
|
|
1696 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1697 "http downstream delayed");
|
|
|
1698
|
|
|
1699 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1700 return;
|
|
|
1701 }
|
|
|
1702
|
|
|
1703 return;
|
|
|
1704 }
|
|
|
1705
|
|
28
|
1706 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1707
|
|
|
1708 if (downstream->destroyed) {
|
|
|
1709 return;
|
|
|
1710 }
|
|
|
1711
|
|
28
|
1712 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1713 return;
|
|
|
1714 }
|
|
|
1715 }
|
|
126
|
1716
|
|
28
|
1717 if (u->peer.connection) {
|
|
|
1718
|
|
|
1719 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1720
|
|
|
1721 if (p->upstream_done && u->cachable) {
|
|
|
1722 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1723 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1724 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1725 return;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728 } else if (p->upstream_eof && u->cachable) {
|
|
|
1729
|
|
|
1730 /* TODO: check length & update cache */
|
|
|
1731
|
|
|
1732 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1733 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1734 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1735 return;
|
|
|
1736 }
|
|
|
1737 }
|
|
|
1738
|
|
|
1739 #endif
|
|
|
1740
|
|
|
1741 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1742 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1743 "http upstream exit: %p", p->out);
|
|
28
|
1744 #if 0
|
|
|
1745 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1746 #endif
|
|
|
1747 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1748 return;
|
|
|
1749 }
|
|
|
1750 }
|
|
|
1751
|
|
|
1752 if (p->downstream_error) {
|
|
32
|
1753 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1754 "http upstream downstream error");
|
|
28
|
1755
|
|
|
1756 if (!u->cachable && u->peer.connection) {
|
|
|
1757 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1758 }
|
|
|
1759 }
|
|
|
1760 }
|
|
|
1761
|
|
|
1762
|
|
36
|
1763 static void
|
|
|
1764 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1765 {
|
|
|
1766 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1767 "http upstream dummy handler");
|
|
|
1768 }
|
|
|
1769
|
|
|
1770
|
|
36
|
1771 static void
|
|
|
1772 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1773 ngx_uint_t ft_type)
|
|
28
|
1774 {
|
|
74
|
1775 ngx_uint_t status, down;
|
|
28
|
1776
|
|
|
1777 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1778 "http next upstream, %xD", ft_type);
|
|
|
1779
|
|
|
1780 #if 0
|
|
|
1781 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1782 #endif
|
|
|
1783
|
|
74
|
1784 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1785 down = 0;
|
|
|
1786 } else {
|
|
|
1787 down = 1;
|
|
28
|
1788 }
|
|
74
|
1789
|
|
|
1790 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1791
|
|
28
|
1792 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1793 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1794 "upstream timed out");
|
|
|
1795 }
|
|
126
|
1796
|
|
28
|
1797 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1798 status = 0;
|
|
|
1799
|
|
|
1800 } else {
|
|
|
1801 switch(ft_type) {
|
|
|
1802
|
|
|
1803 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1804 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1805 break;
|
|
|
1806
|
|
|
1807 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1808 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1809 break;
|
|
|
1810
|
|
|
1811 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1812 status = NGX_HTTP_NOT_FOUND;
|
|
|
1813 break;
|
|
|
1814
|
|
|
1815 /*
|
|
|
1816 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1817 * never reach here
|
|
|
1818 */
|
|
|
1819
|
|
|
1820 default:
|
|
|
1821 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1822 }
|
|
|
1823 }
|
|
|
1824
|
|
132
|
1825 if (r->connection->error) {
|
|
28
|
1826 ngx_http_upstream_finalize_request(r, u,
|
|
|
1827 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1828 return;
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 if (status) {
|
|
|
1832 u->state->status = status;
|
|
|
1833
|
|
74
|
1834 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1835
|
|
|
1836 #if (NGX_HTTP_CACHE)
|
|
|
1837
|
|
|
1838 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1839 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1840 ngx_http_send_cached_response(r));
|
|
28
|
1841 return;
|
|
|
1842 }
|
|
|
1843
|
|
|
1844 #endif
|
|
|
1845
|
|
|
1846 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1847 return;
|
|
|
1848 }
|
|
|
1849 }
|
|
|
1850
|
|
|
1851 if (u->peer.connection) {
|
|
|
1852 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1853 "close http upstream connection: %d",
|
|
|
1854 u->peer.connection->fd);
|
|
126
|
1855 #if (NGX_HTTP_SSL)
|
|
|
1856 if (u->peer.connection->ssl) {
|
|
|
1857 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1858 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1859 }
|
|
|
1860 #endif
|
|
28
|
1861 ngx_close_connection(u->peer.connection);
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 #if 0
|
|
|
1865 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1866 ngx_http_upstream_busy_lock(p);
|
|
|
1867 return;
|
|
|
1868 }
|
|
|
1869 #endif
|
|
|
1870
|
|
|
1871 ngx_http_upstream_connect(r, u);
|
|
|
1872 }
|
|
|
1873
|
|
|
1874
|
|
36
|
1875 static void
|
|
118
|
1876 ngx_http_upstream_cleanup(void *data)
|
|
|
1877 {
|
|
|
1878 ngx_http_request_t *r = data;
|
|
|
1879
|
|
|
1880 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1881 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1882
|
|
|
1883 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1884 }
|
|
|
1885
|
|
|
1886
|
|
|
1887 static void
|
|
36
|
1888 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1889 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1890 {
|
|
112
|
1891 ngx_time_t *tp;
|
|
|
1892
|
|
32
|
1893 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1894 "finalize http upstream request: %i", rc);
|
|
28
|
1895
|
|
118
|
1896 *u->cleanup = NULL;
|
|
|
1897
|
|
112
|
1898 if (u->state->response_time) {
|
|
|
1899 tp = ngx_timeofday();
|
|
|
1900 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1901 - u->state->response_time;
|
|
|
1902 }
|
|
|
1903
|
|
28
|
1904 u->finalize_request(r, rc);
|
|
|
1905
|
|
|
1906 if (u->peer.connection) {
|
|
|
1907 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1908 "close http upstream connection: %d",
|
|
|
1909 u->peer.connection->fd);
|
|
126
|
1910 #if (NGX_HTTP_SSL)
|
|
|
1911
|
|
|
1912 /* TODO: do not shutdown persistent connection */
|
|
|
1913
|
|
|
1914 if (u->peer.connection->ssl) {
|
|
|
1915 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1916 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1917 }
|
|
|
1918 #endif
|
|
28
|
1919 ngx_close_connection(u->peer.connection);
|
|
|
1920 }
|
|
|
1921
|
|
32
|
1922 u->peer.connection = NULL;
|
|
|
1923
|
|
112
|
1924 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1925 {
|
|
|
1926 rc = 0;
|
|
|
1927 }
|
|
|
1928
|
|
130
|
1929 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1930 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1931 "http upstream temp fd: %d",
|
|
130
|
1932 u->pipe->temp_file->file.fd);
|
|
28
|
1933 }
|
|
|
1934
|
|
|
1935 #if 0
|
|
|
1936 if (u->cache) {
|
|
|
1937 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1938 "http upstream cache fd: %d",
|
|
28
|
1939 u->cache->ctx.file.fd);
|
|
|
1940 }
|
|
|
1941 #endif
|
|
|
1942
|
|
58
|
1943 r->log_handler = u->saved_log_handler;
|
|
64
|
1944
|
|
|
1945 if (rc == NGX_DECLINED) {
|
|
|
1946 return;
|
|
|
1947 }
|
|
|
1948
|
|
32
|
1949 r->connection->log->action = "sending to client";
|
|
|
1950
|
|
146
|
1951 if (rc == 0 && r == r->main) {
|
|
130
|
1952 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
1953 }
|
|
|
1954
|
|
|
1955 ngx_http_finalize_request(r, rc);
|
|
|
1956 }
|
|
|
1957
|
|
|
1958
|
|
126
|
1959 #if (NGX_HTTP_SSL)
|
|
|
1960
|
|
|
1961 static void
|
|
|
1962 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1963 {
|
|
|
1964 /* lock peer mutex */
|
|
|
1965
|
|
|
1966 if (peer->ssl_session) {
|
|
|
1967 ngx_ssl_free_session(peer->ssl_session);
|
|
|
1968 }
|
|
|
1969
|
|
|
1970 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
1971
|
|
|
1972 /* unlock peer mutex */
|
|
|
1973
|
|
|
1974 /*
|
|
|
1975 * We send the "close notify" shutdown alert to the upstream only
|
|
|
1976 * and do not wait its "close notify" shutdown alert.
|
|
|
1977 * It is acceptable according to the TLS standard.
|
|
|
1978 */
|
|
|
1979
|
|
|
1980 c->ssl->no_wait_shutdown = 1;
|
|
|
1981
|
|
|
1982 (void) ngx_ssl_shutdown(c);
|
|
|
1983 }
|
|
|
1984
|
|
|
1985 #endif
|
|
|
1986
|
|
|
1987
|
|
58
|
1988 static ngx_int_t
|
|
|
1989 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1990 ngx_uint_t offset)
|
|
126
|
1991 {
|
|
58
|
1992 ngx_table_elt_t **ph;
|
|
126
|
1993
|
|
58
|
1994 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1995
|
|
|
1996 if (*ph == NULL) {
|
|
|
1997 *ph = h;
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 return NGX_OK;
|
|
|
2001 }
|
|
|
2002
|
|
|
2003
|
|
|
2004 static ngx_int_t
|
|
|
2005 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2006 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2007 {
|
|
|
2008 ngx_array_t *pa;
|
|
|
2009 ngx_table_elt_t **ph;
|
|
|
2010
|
|
|
2011 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2012
|
|
|
2013 if (pa->elts == NULL) {
|
|
|
2014 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2015 {
|
|
|
2016 return NGX_ERROR;
|
|
|
2017 }
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 ph = ngx_array_push(pa);
|
|
|
2021 if (ph == NULL) {
|
|
|
2022 return NGX_ERROR;
|
|
|
2023 }
|
|
|
2024
|
|
|
2025 *ph = h;
|
|
|
2026
|
|
|
2027 return NGX_OK;
|
|
|
2028 }
|
|
|
2029
|
|
|
2030
|
|
|
2031 static ngx_int_t
|
|
|
2032 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2033 ngx_uint_t offset)
|
|
|
2034 {
|
|
|
2035 return NGX_OK;
|
|
|
2036 }
|
|
|
2037
|
|
|
2038
|
|
|
2039 static ngx_int_t
|
|
76
|
2040 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2041 ngx_uint_t offset)
|
|
126
|
2042 {
|
|
76
|
2043 ngx_int_t n;
|
|
|
2044
|
|
|
2045 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2046
|
|
|
2047 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2048
|
|
|
2049 if (n != NGX_ERROR) {
|
|
|
2050 r->limit_rate = (size_t) n;
|
|
|
2051 }
|
|
|
2052
|
|
|
2053 return NGX_OK;
|
|
|
2054 }
|
|
|
2055
|
|
|
2056
|
|
|
2057 static ngx_int_t
|
|
58
|
2058 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2059 ngx_uint_t offset)
|
|
|
2060 {
|
|
122
|
2061 ngx_table_elt_t *ho, **ph;
|
|
58
|
2062
|
|
|
2063 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2064 if (ho == NULL) {
|
|
|
2065 return NGX_ERROR;
|
|
|
2066 }
|
|
|
2067
|
|
|
2068 *ho = *h;
|
|
|
2069
|
|
122
|
2070 if (offset) {
|
|
|
2071 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2072 *ph = ho;
|
|
|
2073 }
|
|
|
2074
|
|
58
|
2075 return NGX_OK;
|
|
|
2076 }
|
|
|
2077
|
|
|
2078
|
|
|
2079 static ngx_int_t
|
|
|
2080 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
2081 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2082 {
|
|
|
2083 ngx_flag_t *f;
|
|
|
2084 ngx_table_elt_t *ho;
|
|
|
2085
|
|
|
2086 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
2087
|
|
|
2088 if (*f == 0) {
|
|
|
2089 return NGX_OK;
|
|
|
2090 }
|
|
|
2091
|
|
|
2092 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2093 if (ho == NULL) {
|
|
|
2094 return NGX_ERROR;
|
|
|
2095 }
|
|
|
2096
|
|
|
2097 *ho = *h;
|
|
|
2098
|
|
|
2099 return NGX_OK;
|
|
|
2100 }
|
|
|
2101
|
|
|
2102
|
|
|
2103 static ngx_int_t
|
|
|
2104 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2105 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2106 {
|
|
|
2107 ngx_array_t *pa;
|
|
|
2108 ngx_table_elt_t *ho, **ph;
|
|
|
2109
|
|
|
2110 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2111
|
|
|
2112 if (pa->elts == NULL) {
|
|
|
2113 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2114 {
|
|
|
2115 return NGX_ERROR;
|
|
|
2116 }
|
|
|
2117 }
|
|
|
2118
|
|
|
2119 ph = ngx_array_push(pa);
|
|
|
2120 if (ph == NULL) {
|
|
|
2121 return NGX_ERROR;
|
|
|
2122 }
|
|
|
2123
|
|
|
2124 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2125 if (ho == NULL) {
|
|
|
2126 return NGX_ERROR;
|
|
|
2127 }
|
|
|
2128
|
|
|
2129 *ho = *h;
|
|
|
2130 *ph = ho;
|
|
|
2131
|
|
|
2132 return NGX_OK;
|
|
|
2133 }
|
|
|
2134
|
|
|
2135
|
|
|
2136 static ngx_int_t
|
|
|
2137 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2138 ngx_uint_t offset)
|
|
|
2139 {
|
|
|
2140 r->headers_out.content_type = h->value;
|
|
|
2141
|
|
|
2142 return NGX_OK;
|
|
|
2143 }
|
|
|
2144
|
|
|
2145
|
|
|
2146 static ngx_int_t
|
|
|
2147 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2148 ngx_uint_t offset)
|
|
|
2149 {
|
|
|
2150 ngx_table_elt_t *ho;
|
|
|
2151
|
|
|
2152 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2153 if (ho == NULL) {
|
|
|
2154 return NGX_ERROR;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 *ho = *h;
|
|
|
2158
|
|
|
2159 r->headers_out.content_length = ho;
|
|
|
2160 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2161
|
|
|
2162 return NGX_OK;
|
|
|
2163 }
|
|
|
2164
|
|
|
2165
|
|
|
2166 static ngx_int_t
|
|
|
2167 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2168 ngx_uint_t offset)
|
|
|
2169 {
|
|
|
2170 ngx_int_t rc;
|
|
|
2171 ngx_table_elt_t *ho;
|
|
|
2172
|
|
|
2173 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2174 if (ho == NULL) {
|
|
|
2175 return NGX_ERROR;
|
|
|
2176 }
|
|
|
2177
|
|
|
2178 *ho = *h;
|
|
|
2179
|
|
|
2180 if (r->upstream->rewrite_redirect) {
|
|
|
2181 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2182
|
|
78
|
2183 if (rc == NGX_DECLINED) {
|
|
|
2184 return NGX_OK;
|
|
|
2185 }
|
|
|
2186
|
|
58
|
2187 if (rc == NGX_OK) {
|
|
|
2188 r->headers_out.location = ho;
|
|
|
2189
|
|
|
2190 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2191 "rewritten location: \"%V\"", &ho->value);
|
|
|
2192 }
|
|
|
2193
|
|
|
2194 return rc;
|
|
|
2195 }
|
|
|
2196
|
|
|
2197 /*
|
|
|
2198 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2199 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2200 */
|
|
|
2201
|
|
|
2202 return NGX_OK;
|
|
|
2203 }
|
|
|
2204
|
|
|
2205
|
|
|
2206 static ngx_int_t
|
|
|
2207 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2208 ngx_uint_t offset)
|
|
|
2209 {
|
|
|
2210 u_char *p;
|
|
|
2211 ngx_int_t rc;
|
|
|
2212 ngx_table_elt_t *ho;
|
|
|
2213
|
|
|
2214 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2215 if (ho == NULL) {
|
|
|
2216 return NGX_ERROR;
|
|
|
2217 }
|
|
|
2218
|
|
|
2219 *ho = *h;
|
|
|
2220
|
|
|
2221 if (r->upstream->rewrite_redirect) {
|
|
|
2222
|
|
|
2223 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2224
|
|
|
2225 if (p) {
|
|
|
2226 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2227
|
|
|
2228 } else {
|
|
|
2229 return NGX_OK;
|
|
|
2230 }
|
|
|
2231
|
|
78
|
2232 if (rc == NGX_DECLINED) {
|
|
|
2233 return NGX_OK;
|
|
|
2234 }
|
|
|
2235
|
|
58
|
2236 #if (NGX_DEBUG)
|
|
|
2237 if (rc == NGX_OK) {
|
|
|
2238 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2239 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2240 }
|
|
|
2241 #endif
|
|
|
2242
|
|
|
2243 return rc;
|
|
|
2244 }
|
|
|
2245
|
|
|
2246 return NGX_OK;
|
|
|
2247 }
|
|
|
2248
|
|
|
2249
|
|
|
2250 #if (NGX_HTTP_GZIP)
|
|
|
2251
|
|
|
2252 static ngx_int_t
|
|
|
2253 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2254 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2255 {
|
|
|
2256 ngx_table_elt_t *ho;
|
|
|
2257
|
|
|
2258 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2259 if (ho == NULL) {
|
|
|
2260 return NGX_ERROR;
|
|
|
2261 }
|
|
|
2262
|
|
|
2263 *ho = *h;
|
|
|
2264
|
|
|
2265 r->headers_out.content_encoding = ho;
|
|
|
2266
|
|
|
2267 return NGX_OK;
|
|
|
2268 }
|
|
|
2269
|
|
|
2270 #endif
|
|
|
2271
|
|
|
2272
|
|
36
|
2273 static size_t
|
|
|
2274 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2275 {
|
|
|
2276 if (r->upstream) {
|
|
|
2277 return r->upstream->states.nelts * (3 + 2);
|
|
|
2278 }
|
|
|
2279
|
|
|
2280 return 1;
|
|
|
2281 }
|
|
|
2282
|
|
|
2283
|
|
36
|
2284 static u_char *
|
|
|
2285 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2286 ngx_http_log_op_t *op)
|
|
28
|
2287 {
|
|
|
2288 ngx_uint_t i;
|
|
|
2289 ngx_http_upstream_t *u;
|
|
|
2290 ngx_http_upstream_state_t *state;
|
|
|
2291
|
|
|
2292 u = r->upstream;
|
|
|
2293
|
|
122
|
2294 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2295 *buf = '-';
|
|
|
2296 return buf + 1;
|
|
|
2297 }
|
|
|
2298
|
|
|
2299 i = 0;
|
|
|
2300 state = u->states.elts;
|
|
|
2301
|
|
|
2302 for ( ;; ) {
|
|
|
2303 if (state[i].status == 0) {
|
|
|
2304 *buf++ = '-';
|
|
|
2305
|
|
|
2306 } else {
|
|
|
2307 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2308 }
|
|
|
2309
|
|
|
2310 if (++i == u->states.nelts) {
|
|
|
2311 return buf;
|
|
|
2312 }
|
|
|
2313
|
|
|
2314 *buf++ = ',';
|
|
|
2315 *buf++ = ' ';
|
|
|
2316 }
|
|
|
2317 }
|
|
|
2318
|
|
|
2319
|
|
122
|
2320 static size_t
|
|
|
2321 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2322 uintptr_t data)
|
|
|
2323 {
|
|
|
2324 if (r->upstream) {
|
|
|
2325 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2326 }
|
|
|
2327
|
|
|
2328 return 1;
|
|
|
2329 }
|
|
|
2330
|
|
|
2331
|
|
58
|
2332 static u_char *
|
|
112
|
2333 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2334 ngx_http_log_op_t *op)
|
|
|
2335 {
|
|
|
2336 ngx_uint_t i;
|
|
|
2337 ngx_http_upstream_t *u;
|
|
|
2338 ngx_http_upstream_state_t *state;
|
|
|
2339
|
|
|
2340 u = r->upstream;
|
|
|
2341
|
|
122
|
2342 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2343 *buf = '-';
|
|
|
2344 return buf + 1;
|
|
|
2345 }
|
|
|
2346
|
|
|
2347 i = 0;
|
|
|
2348 state = u->states.elts;
|
|
|
2349
|
|
|
2350 for ( ;; ) {
|
|
|
2351 if (state[i].status == 0) {
|
|
|
2352 *buf++ = '-';
|
|
|
2353
|
|
|
2354 } else {
|
|
|
2355 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2356 state[i].response_time / 1000,
|
|
|
2357 state[i].response_time % 1000);
|
|
|
2358 }
|
|
|
2359
|
|
|
2360 if (++i == u->states.nelts) {
|
|
|
2361 return buf;
|
|
|
2362 }
|
|
|
2363
|
|
|
2364 *buf++ = ',';
|
|
|
2365 *buf++ = ' ';
|
|
|
2366 }
|
|
|
2367 }
|
|
|
2368
|
|
|
2369
|
|
|
2370 static u_char *
|
|
58
|
2371 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2372 {
|
|
|
2373 u_char *p;
|
|
|
2374 ngx_http_upstream_t *u;
|
|
|
2375 ngx_peer_connection_t *peer;
|
|
|
2376
|
|
|
2377 u = r->upstream;
|
|
|
2378 peer = &u->peer;
|
|
|
2379
|
|
|
2380 p = ngx_snprintf(buf, len,
|
|
58
|
2381 ", server: %V, URL: \"%V\","
|
|
118
|
2382 " upstream: \"%V%V%s%V\"",
|
|
52
|
2383 &r->server_name,
|
|
28
|
2384 &r->unparsed_uri,
|
|
58
|
2385 &u->conf->schema,
|
|
28
|
2386 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2387 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2388 &u->uri);
|
|
28
|
2389 len -= p - buf;
|
|
|
2390 buf = p;
|
|
|
2391
|
|
54
|
2392 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2393 }
|
|
|
2394
|
|
|
2395
|
|
36
|
2396 static ngx_int_t
|
|
122
|
2397 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2398 {
|
|
122
|
2399 ngx_http_variable_t *var, *v;
|
|
28
|
2400 ngx_http_log_op_name_t *op;
|
|
|
2401
|
|
122
|
2402 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2403 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2404 if (var == NULL) {
|
|
|
2405 return NGX_ERROR;
|
|
|
2406 }
|
|
|
2407
|
|
|
2408 var->handler = v->handler;
|
|
|
2409 var->data = v->data;
|
|
|
2410 }
|
|
|
2411
|
|
28
|
2412 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2413 op->run = NULL;
|
|
|
2414
|
|
|
2415 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2416 if (op->name.len == 0) {
|
|
|
2417 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2418 }
|
|
|
2419 }
|
|
|
2420
|
|
|
2421 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2422
|
|
|
2423 return NGX_OK;
|
|
|
2424 }
|
|
58
|
2425
|
|
|
2426
|
|
122
|
2427 static ngx_int_t
|
|
|
2428 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2429 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2430 {
|
|
|
2431 u_char *p;
|
|
|
2432 size_t len;
|
|
|
2433 ngx_uint_t i;
|
|
|
2434 ngx_http_upstream_t *u;
|
|
|
2435 ngx_http_upstream_state_t *state;
|
|
|
2436
|
|
|
2437 v->valid = 1;
|
|
|
2438 v->no_cachable = 0;
|
|
|
2439 v->not_found = 0;
|
|
|
2440
|
|
|
2441 u = r->upstream;
|
|
|
2442
|
|
|
2443 if (u == NULL || u->states.nelts == 0) {
|
|
|
2444 v->not_found = 1;
|
|
|
2445 return NGX_OK;
|
|
|
2446 }
|
|
|
2447
|
|
|
2448 len = u->states.nelts * (3 + 2);
|
|
|
2449
|
|
|
2450 p = ngx_palloc(r->pool, len);
|
|
|
2451 if (p == NULL) {
|
|
|
2452 return NGX_ERROR;
|
|
|
2453 }
|
|
|
2454
|
|
|
2455 v->data = p;
|
|
|
2456
|
|
|
2457 i = 0;
|
|
|
2458 state = u->states.elts;
|
|
|
2459
|
|
|
2460 for ( ;; ) {
|
|
|
2461 if (state[i].status == 0) {
|
|
|
2462 *p++ = '-';
|
|
|
2463
|
|
|
2464 } else {
|
|
|
2465 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2466 }
|
|
|
2467
|
|
|
2468 if (++i == u->states.nelts) {
|
|
|
2469 break;
|
|
|
2470 }
|
|
|
2471
|
|
|
2472 *p++ = ',';
|
|
|
2473 *p++ = ' ';
|
|
|
2474 }
|
|
|
2475
|
|
|
2476 v->len = p - v->data;
|
|
|
2477
|
|
|
2478 return NGX_OK;
|
|
|
2479 }
|
|
|
2480
|
|
|
2481
|
|
|
2482 static ngx_int_t
|
|
|
2483 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2484 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2485 {
|
|
|
2486 u_char *p;
|
|
|
2487 size_t len;
|
|
|
2488 ngx_uint_t i;
|
|
|
2489 ngx_http_upstream_t *u;
|
|
|
2490 ngx_http_upstream_state_t *state;
|
|
|
2491
|
|
|
2492 v->valid = 1;
|
|
|
2493 v->no_cachable = 0;
|
|
|
2494 v->not_found = 0;
|
|
|
2495
|
|
|
2496 u = r->upstream;
|
|
|
2497
|
|
|
2498 if (u == NULL || u->states.nelts == 0) {
|
|
|
2499 v->not_found = 1;
|
|
|
2500 return NGX_OK;
|
|
|
2501 }
|
|
|
2502
|
|
|
2503 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2504
|
|
|
2505 p = ngx_palloc(r->pool, len);
|
|
|
2506 if (p == NULL) {
|
|
|
2507 return NGX_ERROR;
|
|
|
2508 }
|
|
|
2509
|
|
|
2510 v->data = p;
|
|
|
2511
|
|
|
2512 i = 0;
|
|
|
2513 state = u->states.elts;
|
|
|
2514
|
|
|
2515 for ( ;; ) {
|
|
|
2516 if (state[i].status == 0) {
|
|
|
2517 *p++ = '-';
|
|
|
2518
|
|
|
2519 } else {
|
|
|
2520 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2521 state[i].response_time / 1000,
|
|
|
2522 state[i].response_time % 1000);
|
|
|
2523 }
|
|
|
2524
|
|
|
2525 if (++i == u->states.nelts) {
|
|
|
2526 break;
|
|
|
2527 }
|
|
|
2528
|
|
|
2529 *p++ = ',';
|
|
|
2530 *p++ = ' ';
|
|
|
2531 }
|
|
|
2532
|
|
|
2533 v->len = p - v->data;
|
|
|
2534
|
|
|
2535 return NGX_OK;
|
|
|
2536 }
|
|
|
2537
|
|
|
2538
|
|
58
|
2539 static void *
|
|
|
2540 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2541 {
|
|
|
2542 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2543
|
|
|
2544 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2545 if (umcf == NULL) {
|
|
|
2546 return NULL;
|
|
|
2547 }
|
|
|
2548
|
|
|
2549 return umcf;
|
|
|
2550 }
|
|
|
2551
|
|
|
2552
|
|
|
2553 static char *
|
|
|
2554 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
2555 {
|
|
|
2556 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2557
|
|
126
|
2558 umcf->headers_in_hash.max_size = 100;
|
|
58
|
2559 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
2560 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
2561 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
2562
|
|
138
|
2563 if (ngx_hash0_init(&umcf->headers_in_hash, cf->pool,
|
|
58
|
2564 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
2565 {
|
|
|
2566 return NGX_CONF_ERROR;
|
|
|
2567 }
|
|
|
2568
|
|
|
2569 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
2570 "http upstream headers_in hash size: %ui, "
|
|
|
2571 "max buckets per entry: %ui",
|
|
|
2572 umcf->headers_in_hash.hash_size,
|
|
|
2573 umcf->headers_in_hash.min_buckets);
|
|
|
2574
|
|
|
2575 return NGX_CONF_OK;
|
|
|
2576 }
|
