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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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93 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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94 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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95 ngx_peer_t *peer);
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96 #endif
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97
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58
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98
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99 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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100
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101 { ngx_string("Status"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, status),
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64
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104 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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105
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106 { ngx_string("Content-Type"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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109 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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110
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111 { ngx_string("Content-Length"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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114 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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115
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116 { ngx_string("Date"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, date),
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119 ngx_http_upstream_conditional_copy_header_line,
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64
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120 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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58
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121
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122 { ngx_string("Server"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, server),
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125 ngx_http_upstream_conditional_copy_header_line,
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64
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126 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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58
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127
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78
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128 { ngx_string("WWW-Authenticate"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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131 ngx_http_upstream_copy_header_line, 0, 0 },
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132
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58
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133 { ngx_string("Location"),
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134 ngx_http_upstream_ignore_header_line, 0,
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64
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135 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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136
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137 { ngx_string("Refresh"),
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138 ngx_http_upstream_ignore_header_line, 0,
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64
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139 ngx_http_upstream_rewrite_refresh, 0, 0 },
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140
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141 { ngx_string("Set-Cookie"),
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142 ngx_http_upstream_ignore_header_line, 0,
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80
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143 ngx_http_upstream_copy_header_line, 0, 1 },
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144
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145 { ngx_string("Content-Disposition"),
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146 ngx_http_upstream_ignore_header_line, 0,
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147 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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148
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149 { ngx_string("Cache-Control"),
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150 ngx_http_upstream_process_multi_header_lines,
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151 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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152 ngx_http_upstream_copy_multi_header_lines,
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64
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153 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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154
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122
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155 { ngx_string("Expires"),
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156 ngx_http_upstream_process_header_line,
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157 offsetof(ngx_http_upstream_headers_in_t, expires),
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158 ngx_http_upstream_copy_header_line,
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159 offsetof(ngx_http_headers_out_t, expires), 1 },
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160
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126
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161 { ngx_string("Accept-Ranges"),
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162 ngx_http_upstream_process_header_line,
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163 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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164 ngx_http_upstream_copy_header_line,
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165 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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166
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58
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167 { ngx_string("Connection"),
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168 ngx_http_upstream_ignore_header_line, 0,
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64
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169 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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170
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171 { ngx_string("X-Pad"),
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172 ngx_http_upstream_ignore_header_line, 0,
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64
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173 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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174
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175 { ngx_string("X-Powered-By"),
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176 ngx_http_upstream_ignore_header_line, 0,
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177 ngx_http_upstream_conditional_copy_header_line,
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64
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178 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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58
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179
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180 { ngx_string("X-Accel-Expires"),
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181 ngx_http_upstream_process_header_line,
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182 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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183 ngx_http_upstream_conditional_copy_header_line,
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64
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184 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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185
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186 { ngx_string("X-Accel-Redirect"),
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187 ngx_http_upstream_process_header_line,
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188 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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189 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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190
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76
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191 { ngx_string("X-Accel-Limit-Rate"),
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192 ngx_http_upstream_process_limit_rate, 0,
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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194
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58
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195 #if (NGX_HTTP_GZIP)
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196 { ngx_string("Content-Encoding"),
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197 ngx_http_upstream_process_header_line,
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198 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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199 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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200 #endif
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201
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64
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202 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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203 };
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28
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204
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205
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206 ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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207 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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208 NULL, /* postconfiguration */
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209
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210 ngx_http_upstream_create_main_conf, /* create main configuration */
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211 ngx_http_core_init_main_conf, /* init main configuration */
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28
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212
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213 NULL, /* create server configuration */
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214 NULL, /* merge server configuration */
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215
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216 NULL, /* create location configuration */
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217 NULL /* merge location configuration */
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218 };
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126
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219
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28
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220
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221 ngx_module_t ngx_http_upstream_module = {
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58
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222 NGX_MODULE_V1,
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28
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223 &ngx_http_upstream_module_ctx, /* module context */
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224 NULL, /* module directives */
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225 NGX_HTTP_MODULE, /* module type */
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90
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226 NULL, /* init master */
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28
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227 NULL, /* init module */
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90
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228 NULL, /* init process */
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229 NULL, /* init thread */
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230 NULL, /* exit thread */
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231 NULL, /* exit process */
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232 NULL, /* exit master */
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233 NGX_MODULE_V1_PADDING
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28
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234 };
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235
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236
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132
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237 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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28
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238 { ngx_string("upstream_status"), 0, NULL,
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122
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239 ngx_http_upstream_log_status_getlen,
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240 ngx_http_upstream_log_status },
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241 { ngx_string("upstream_response_time"), 0, NULL,
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242 ngx_http_upstream_log_response_time_getlen,
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243 ngx_http_upstream_log_response_time },
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28
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244 { ngx_null_string, 0, NULL, NULL, NULL }
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245 };
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246
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247
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122
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248 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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249
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250 { ngx_string("upstream_status"),
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132
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251 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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252
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253 { ngx_string("upstream_response_time"),
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132
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254 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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255
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256 { ngx_null_string, NULL, 0, 0, 0 }
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257 };
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258
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259
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28
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260 char *ngx_http_upstream_header_errors[] = {
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261 "upstream sent invalid header",
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262 "upstream sent too long header line"
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263 };
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264
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265
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36
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266 void
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267 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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268 {
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112
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269 ngx_time_t *tp;
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58
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270 ngx_connection_t *c;
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118
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271 ngx_http_cleanup_t *cln;
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58
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272 ngx_http_upstream_t *u;
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273 ngx_http_core_loc_conf_t *clcf;
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28
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274
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275 c = r->connection;
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276
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277 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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278 "http init upstream, client timer: %d", c->read->timer_set);
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279
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280 if (c->read->timer_set) {
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281 ngx_del_timer(c->read);
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282 }
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283
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58
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284 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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80
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285 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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126
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286
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28
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287 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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288
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289 if (!c->write->active) {
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80
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290 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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291 == NGX_ERROR)
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28
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292 {
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293 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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294 return;
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295 }
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296 }
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297 }
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298
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299 u = r->upstream;
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300
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86
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301 if (r->request_body) {
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302 u->request_bufs = r->request_body->bufs;
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303 }
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58
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304
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86
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305 if (u->create_request(r) != NGX_OK) {
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28
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306 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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307 return;
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308 }
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309
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310 u->peer.log = r->connection->log;
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58
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311 u->saved_log_handler = r->log_handler;
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312 r->log_handler = ngx_http_upstream_log_error;
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313
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314 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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315
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316 u->output.sendfile = r->connection->sendfile;
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317 u->output.pool = r->pool;
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318 u->output.bufs.num = 1;
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58
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319 u->output.bufs.size = clcf->client_body_buffer_size;
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|
28
|
320 u->output.output_filter = ngx_chain_writer;
|
|
|
321 u->output.filter_ctx = &u->writer;
|
|
|
322
|
|
|
323 u->writer.pool = r->pool;
|
|
|
324
|
|
|
325 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
118
|
326 sizeof(ngx_http_upstream_state_t))
|
|
|
327 != NGX_OK)
|
|
28
|
328 {
|
|
|
329 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
330 return;
|
|
|
331 }
|
|
|
332
|
|
50
|
333 u->state = ngx_array_push(&u->states);
|
|
|
334 if (u->state == NULL) {
|
|
28
|
335 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
336 return;
|
|
|
337 }
|
|
|
338
|
|
|
339 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
340
|
|
112
|
341 tp = ngx_timeofday();
|
|
|
342
|
|
|
343 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
344
|
|
118
|
345 cln = ngx_http_cleanup_add(r, sizeof(void *));
|
|
|
346 if (cln == NULL) {
|
|
|
347 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
348 return;
|
|
|
349 }
|
|
|
350
|
|
|
351 cln->handler = ngx_http_upstream_cleanup;
|
|
|
352 cln->data = r;
|
|
|
353 u->cleanup = &cln->handler;
|
|
|
354
|
|
28
|
355 ngx_http_upstream_connect(r, u);
|
|
|
356 }
|
|
|
357
|
|
|
358
|
|
36
|
359 static void
|
|
58
|
360 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
361 {
|
|
|
362 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
363 }
|
|
|
364
|
|
|
365
|
|
|
366 static void
|
|
|
367 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
368 {
|
|
|
369 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
370 }
|
|
|
371
|
|
|
372
|
|
|
373 static void
|
|
|
374 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
375 ngx_event_t *ev)
|
|
28
|
376 {
|
|
|
377 int n;
|
|
|
378 char buf[1];
|
|
126
|
379 ngx_err_t err;
|
|
28
|
380 ngx_connection_t *c;
|
|
|
381 ngx_http_upstream_t *u;
|
|
|
382
|
|
76
|
383 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
384 "http upstream check client, write event:%d, \"%V\"",
|
|
|
385 ev->write, &r->uri);
|
|
28
|
386
|
|
58
|
387 c = r->connection;
|
|
32
|
388 u = r->upstream;
|
|
|
389
|
|
132
|
390 if (c->error) {
|
|
76
|
391 ngx_http_upstream_finalize_request(r, u,
|
|
|
392 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
393 return;
|
|
|
394 }
|
|
|
395
|
|
32
|
396 if (u->peer.connection == NULL) {
|
|
|
397 return;
|
|
|
398 }
|
|
|
399
|
|
28
|
400 #if (NGX_HAVE_KQUEUE)
|
|
|
401
|
|
|
402 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
403
|
|
|
404 if (!ev->pending_eof) {
|
|
|
405 return;
|
|
|
406 }
|
|
|
407
|
|
|
408 ev->eof = 1;
|
|
132
|
409 c->error = 1;
|
|
28
|
410
|
|
|
411 if (ev->kq_errno) {
|
|
|
412 ev->error = 1;
|
|
|
413 }
|
|
|
414
|
|
|
415 if (!u->cachable && u->peer.connection) {
|
|
|
416 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
417 "kevent() reported that client closed prematurely "
|
|
|
418 "connection, so upstream connection is closed too");
|
|
28
|
419 ngx_http_upstream_finalize_request(r, u,
|
|
|
420 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
421 return;
|
|
|
422 }
|
|
|
423
|
|
|
424 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
425 "kevent() reported that client closed "
|
|
|
426 "prematurely connection");
|
|
|
427
|
|
|
428 if (u->peer.connection == NULL) {
|
|
|
429 ngx_http_upstream_finalize_request(r, u,
|
|
|
430 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
431 return;
|
|
|
432 }
|
|
|
433
|
|
|
434 return;
|
|
|
435 }
|
|
|
436
|
|
|
437 #endif
|
|
|
438
|
|
|
439 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
440
|
|
|
441 err = ngx_socket_errno;
|
|
|
442
|
|
|
443 /*
|
|
|
444 * we do not need to disable the write event because
|
|
|
445 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
446 */
|
|
|
447
|
|
|
448 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
449 return;
|
|
|
450 }
|
|
|
451
|
|
|
452 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
453 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
454 ngx_http_upstream_finalize_request(r, u,
|
|
|
455 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
456 return;
|
|
|
457 }
|
|
|
458 }
|
|
|
459
|
|
|
460 if (n > 0) {
|
|
|
461 return;
|
|
|
462 }
|
|
|
463
|
|
|
464 if (n == -1) {
|
|
|
465 if (err == NGX_EAGAIN) {
|
|
|
466 return;
|
|
|
467 }
|
|
|
468
|
|
|
469 ev->error = 1;
|
|
|
470
|
|
32
|
471 } else { /* n == 0 */
|
|
28
|
472 err = 0;
|
|
|
473 }
|
|
|
474
|
|
78
|
475 ev->eof = 1;
|
|
132
|
476 c->error = 1;
|
|
78
|
477
|
|
28
|
478 if (!u->cachable && u->peer.connection) {
|
|
|
479 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
480 "client closed prematurely connection, "
|
|
|
481 "so upstream connection is closed too");
|
|
|
482 ngx_http_upstream_finalize_request(r, u,
|
|
|
483 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
484 return;
|
|
|
485 }
|
|
|
486
|
|
|
487 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
488 "client closed prematurely connection");
|
|
|
489
|
|
|
490 if (u->peer.connection == NULL) {
|
|
|
491 ngx_http_upstream_finalize_request(r, u,
|
|
|
492 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
493 return;
|
|
|
494 }
|
|
|
495 }
|
|
|
496
|
|
|
497
|
|
36
|
498 static void
|
|
|
499 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
500 {
|
|
|
501 ngx_int_t rc;
|
|
126
|
502 ngx_peer_t *peer;
|
|
28
|
503 ngx_connection_t *c;
|
|
|
504
|
|
32
|
505 r->connection->log->action = "connecting to upstream";
|
|
28
|
506
|
|
|
507 r->connection->single_connection = 0;
|
|
|
508
|
|
|
509 rc = ngx_event_connect_peer(&u->peer);
|
|
|
510
|
|
|
511 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
512 "http upstream connect: %i", rc);
|
|
|
513
|
|
|
514 if (rc == NGX_ERROR) {
|
|
|
515 ngx_http_upstream_finalize_request(r, u,
|
|
|
516 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
517 return;
|
|
|
518 }
|
|
|
519
|
|
126
|
520 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
521 u->state->peer = &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;
|
|
58
|
537 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
538 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
539
|
|
|
540 c->sendfile = r->connection->sendfile;
|
|
|
541
|
|
|
542 c->pool = r->pool;
|
|
|
543 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
544
|
|
|
545 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
546
|
|
|
547 u->writer.out = NULL;
|
|
|
548 u->writer.last = &u->writer.out;
|
|
|
549 u->writer.connection = c;
|
|
|
550 u->writer.limit = 0;
|
|
|
551
|
|
|
552 if (u->request_sent) {
|
|
58
|
553 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
554 ngx_http_upstream_finalize_request(r, u,
|
|
|
555 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
556 return;
|
|
|
557 }
|
|
28
|
558 }
|
|
|
559
|
|
122
|
560 if (r->request_body && r->request_body->temp_file && r->main == r) {
|
|
|
561
|
|
|
562 /*
|
|
|
563 * the r->request_body->buf can be reused for one request only,
|
|
|
564 * the subrequests should allocate their own temporay bufs
|
|
|
565 */
|
|
|
566
|
|
|
567 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
568 if (u->output.free == NULL) {
|
|
|
569 ngx_http_upstream_finalize_request(r, u,
|
|
|
570 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
571 return;
|
|
28
|
572 }
|
|
122
|
573
|
|
|
574 u->output.free->buf = r->request_body->buf;
|
|
|
575 u->output.free->next = NULL;
|
|
|
576 u->output.allocated = 1;
|
|
|
577
|
|
|
578 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
579 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
580 r->request_body->buf->tag = u->output.tag;
|
|
28
|
581 }
|
|
|
582
|
|
|
583 u->request_sent = 0;
|
|
|
584
|
|
|
585 if (rc == NGX_AGAIN) {
|
|
|
586 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
587 return;
|
|
|
588 }
|
|
|
589
|
|
|
590 /* rc == NGX_OK */
|
|
|
591
|
|
126
|
592 #if (NGX_HTTP_SSL)
|
|
|
593
|
|
|
594 if (u->conf->ssl) {
|
|
|
595 if (c->ssl == NULL) {
|
|
|
596
|
|
|
597 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
598 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
599 == NGX_ERROR)
|
|
|
600 {
|
|
|
601 ngx_http_upstream_finalize_request(r, u,
|
|
|
602 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
603 return;
|
|
|
604 }
|
|
|
605
|
|
|
606 c->sendfile = 0;
|
|
|
607 }
|
|
|
608
|
|
|
609 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
610 ngx_http_upstream_finalize_request(r, u,
|
|
|
611 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
612 return;
|
|
|
613 }
|
|
|
614
|
|
|
615 rc = ngx_ssl_handshake(c);
|
|
|
616
|
|
|
617 if (rc == NGX_AGAIN) {
|
|
|
618 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
619 return;
|
|
|
620 }
|
|
|
621
|
|
|
622 ngx_http_upstream_ssl_handshake(c);
|
|
|
623
|
|
|
624 return;
|
|
|
625 }
|
|
|
626
|
|
|
627 #endif
|
|
|
628
|
|
28
|
629 ngx_http_upstream_send_request(r, u);
|
|
|
630 }
|
|
|
631
|
|
|
632
|
|
126
|
633 #if (NGX_HTTP_SSL)
|
|
|
634
|
|
|
635 static void
|
|
|
636 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
637 {
|
|
|
638 ngx_http_request_t *r;
|
|
|
639 ngx_http_upstream_t *u;
|
|
|
640
|
|
|
641 r = c->data;
|
|
|
642 u = r->upstream;
|
|
|
643
|
|
|
644 if (c->ssl->handshaked) {
|
|
|
645
|
|
|
646 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
647 c->read->handler = ngx_http_upstream_process_header;
|
|
|
648
|
|
|
649 ngx_http_upstream_send_request(r, u);
|
|
|
650
|
|
|
651 return;
|
|
|
652 }
|
|
|
653
|
|
|
654 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
655
|
|
|
656 }
|
|
|
657
|
|
|
658 #endif
|
|
|
659
|
|
|
660
|
|
58
|
661 static ngx_int_t
|
|
36
|
662 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
663 {
|
|
|
664 ngx_chain_t *cl;
|
|
|
665
|
|
58
|
666 if (u->reinit_request(r) != NGX_OK) {
|
|
|
667 return NGX_ERROR;
|
|
|
668 }
|
|
|
669
|
|
|
670 ngx_memzero(&r->upstream->headers_in,
|
|
|
671 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
672
|
|
|
673 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
674 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
|
675 {
|
|
|
676 return NGX_ERROR;
|
|
28
|
677 }
|
|
|
678
|
|
|
679 /* reinit the request chain */
|
|
126
|
680
|
|
58
|
681 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
682 cl->buf->pos = cl->buf->start;
|
|
|
683 cl->buf->file_pos = 0;
|
|
|
684 }
|
|
|
685
|
|
58
|
686 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
687
|
|
122
|
688 if (r->request_body && r->request_body->temp_file
|
|
|
689 && r->main != r && u->output.buf)
|
|
|
690 {
|
|
|
691 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
692 if (u->output.free == NULL) {
|
|
|
693 return NGX_ERROR;
|
|
58
|
694 }
|
|
122
|
695
|
|
|
696 u->output.free->buf = u->output.buf;
|
|
|
697 u->output.free->next = NULL;
|
|
|
698
|
|
|
699 u->output.buf->pos = u->output.buf->start;
|
|
|
700 u->output.buf->last = u->output.buf->start;
|
|
58
|
701 }
|
|
28
|
702
|
|
|
703 u->output.buf = NULL;
|
|
|
704 u->output.in = NULL;
|
|
|
705 u->output.busy = NULL;
|
|
126
|
706
|
|
130
|
707 /* reinit u->buffer */
|
|
126
|
708
|
|
28
|
709 #if 0
|
|
|
710 if (u->cache) {
|
|
130
|
711 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
712 u->buffer.last = u->buffer.pos;
|
|
28
|
713
|
|
|
714 } else {
|
|
130
|
715 u->buffer.pos = u->buffer.start;
|
|
|
716 u->buffer.last = u->buffer.start;
|
|
28
|
717 }
|
|
|
718 #else
|
|
58
|
719
|
|
130
|
720 u->buffer.pos = u->buffer.start;
|
|
|
721 u->buffer.last = u->buffer.start;
|
|
58
|
722
|
|
28
|
723 #endif
|
|
|
724
|
|
|
725 /* add one more state */
|
|
|
726
|
|
50
|
727 u->state = ngx_array_push(&u->states);
|
|
|
728 if (u->state == NULL) {
|
|
58
|
729 return NGX_ERROR;
|
|
28
|
730 }
|
|
|
731
|
|
|
732 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
733
|
|
|
734 return NGX_OK;
|
|
28
|
735 }
|
|
|
736
|
|
|
737
|
|
36
|
738 static void
|
|
|
739 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
740 {
|
|
32
|
741 int rc;
|
|
|
742 ngx_connection_t *c;
|
|
126
|
743
|
|
28
|
744 c = u->peer.connection;
|
|
|
745
|
|
|
746 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
747 "http upstream send request");
|
|
|
748
|
|
|
749 #if (NGX_HAVE_KQUEUE)
|
|
|
750
|
|
|
751 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
752 && !u->request_sent
|
|
|
753 && c->write->pending_eof)
|
|
|
754 {
|
|
86
|
755 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
756 "kevent() reported that connect() failed");
|
|
28
|
757 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
758 return;
|
|
|
759 }
|
|
|
760
|
|
|
761 #endif
|
|
|
762
|
|
32
|
763 c->log->action = "sending request to upstream";
|
|
28
|
764
|
|
58
|
765 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
766
|
|
|
767 u->request_sent = 1;
|
|
|
768
|
|
|
769 if (rc == NGX_ERROR) {
|
|
|
770 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
771 return;
|
|
|
772 }
|
|
|
773
|
|
|
774 if (c->write->timer_set) {
|
|
|
775 ngx_del_timer(c->write);
|
|
|
776 }
|
|
|
777
|
|
|
778 if (rc == NGX_AGAIN) {
|
|
|
779 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
780
|
|
|
781 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
782 {
|
|
|
783 ngx_http_upstream_finalize_request(r, u,
|
|
|
784 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
785 return;
|
|
|
786 }
|
|
|
787
|
|
|
788 return;
|
|
|
789 }
|
|
|
790
|
|
|
791 /* rc == NGX_OK */
|
|
|
792
|
|
|
793 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
794 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
795 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
796 ngx_tcp_push_n " failed");
|
|
|
797 ngx_http_upstream_finalize_request(r, u,
|
|
|
798 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
799 return;
|
|
28
|
800 }
|
|
|
801
|
|
|
802 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
803 }
|
|
126
|
804
|
|
28
|
805 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
806
|
|
|
807 #if 1
|
|
|
808 if (c->read->ready) {
|
|
126
|
809
|
|
28
|
810 /* post aio operation */
|
|
|
811
|
|
|
812 /*
|
|
|
813 * TODO comment
|
|
|
814 * although we can post aio operation just in the end
|
|
|
815 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
816 * it's better to do here because we postpone header buffer allocation
|
|
|
817 */
|
|
|
818
|
|
|
819 ngx_http_upstream_process_header(c->read);
|
|
|
820 return;
|
|
|
821 }
|
|
|
822 #endif
|
|
|
823
|
|
58
|
824 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
825
|
|
58
|
826 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
827 ngx_http_upstream_finalize_request(r, u,
|
|
|
828 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
829 return;
|
|
|
830 }
|
|
|
831 }
|
|
|
832
|
|
|
833
|
|
36
|
834 static void
|
|
|
835 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
836 {
|
|
|
837 ngx_connection_t *c;
|
|
|
838 ngx_http_request_t *r;
|
|
|
839 ngx_http_upstream_t *u;
|
|
|
840
|
|
|
841 c = wev->data;
|
|
|
842 r = c->data;
|
|
|
843 u = r->upstream;
|
|
|
844
|
|
|
845 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
846 "http upstream send request handler");
|
|
|
847
|
|
|
848 if (wev->timedout) {
|
|
32
|
849 c->log->action = "sending request to upstream";
|
|
28
|
850 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
851 return;
|
|
|
852 }
|
|
|
853
|
|
|
854 ngx_http_upstream_send_request(r, u);
|
|
|
855 }
|
|
|
856
|
|
|
857
|
|
36
|
858 static void
|
|
|
859 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
860 {
|
|
64
|
861 ssize_t n;
|
|
|
862 ngx_int_t rc;
|
|
122
|
863 ngx_str_t *uri, args;
|
|
|
864 ngx_uint_t i, key, flags;
|
|
64
|
865 ngx_list_part_t *part;
|
|
|
866 ngx_table_elt_t *h;
|
|
|
867 ngx_connection_t *c;
|
|
|
868 ngx_http_request_t *r;
|
|
|
869 ngx_http_upstream_t *u;
|
|
|
870 ngx_http_err_page_t *err_page;
|
|
|
871 ngx_http_core_loc_conf_t *clcf;
|
|
|
872 ngx_http_upstream_header_t *hh;
|
|
|
873 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
874
|
|
|
875 c = rev->data;
|
|
|
876 r = c->data;
|
|
|
877 u = r->upstream;
|
|
|
878
|
|
|
879 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
880 "http upstream process header");
|
|
28
|
881
|
|
32
|
882 c->log->action = "reading response header from upstream";
|
|
28
|
883
|
|
|
884 if (rev->timedout) {
|
|
|
885 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
886 return;
|
|
|
887 }
|
|
126
|
888
|
|
130
|
889 if (u->buffer.start == NULL) {
|
|
|
890 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
891 if (u->buffer.start == NULL) {
|
|
28
|
892 ngx_http_upstream_finalize_request(r, u,
|
|
|
893 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
894 return;
|
|
|
895 }
|
|
|
896
|
|
130
|
897 u->buffer.pos = u->buffer.start;
|
|
|
898 u->buffer.last = u->buffer.start;
|
|
|
899 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
900 u->buffer.temporary = 1;
|
|
|
901
|
|
|
902 u->buffer.tag = u->output.tag;
|
|
28
|
903
|
|
58
|
904 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
905 sizeof(ngx_table_elt_t))
|
|
|
906 != NGX_OK)
|
|
58
|
907 {
|
|
|
908 ngx_http_upstream_finalize_request(r, u,
|
|
|
909 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
910 return;
|
|
|
911 }
|
|
|
912
|
|
28
|
913 #if 0
|
|
|
914 if (u->cache) {
|
|
130
|
915 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
916 u->buffer.last = u->buffer.pos;
|
|
28
|
917 }
|
|
|
918 #endif
|
|
|
919 }
|
|
|
920
|
|
130
|
921 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
922 u->buffer.end - u->buffer.last);
|
|
28
|
923
|
|
|
924 if (n == NGX_AGAIN) {
|
|
|
925 #if 0
|
|
|
926 ngx_add_timer(rev, u->read_timeout);
|
|
|
927 #endif
|
|
|
928
|
|
|
929 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
930 ngx_http_upstream_finalize_request(r, u,
|
|
|
931 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
932 return;
|
|
|
933 }
|
|
|
934
|
|
|
935 return;
|
|
|
936 }
|
|
|
937
|
|
|
938 if (n == 0) {
|
|
|
939 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
940 "upstream prematurely closed connection");
|
|
|
941 }
|
|
|
942
|
|
|
943 if (n == NGX_ERROR || n == 0) {
|
|
|
944 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
945 return;
|
|
|
946 }
|
|
|
947
|
|
130
|
948 u->buffer.last += n;
|
|
28
|
949
|
|
|
950 #if 0
|
|
|
951 u->valid_header_in = 0;
|
|
|
952
|
|
|
953 u->peer.cached = 0;
|
|
|
954 #endif
|
|
|
955
|
|
|
956 rc = u->process_header(r);
|
|
|
957
|
|
|
958 if (rc == NGX_AGAIN) {
|
|
|
959 #if 0
|
|
|
960 ngx_add_timer(rev, u->read_timeout);
|
|
|
961 #endif
|
|
|
962
|
|
130
|
963 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
964 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
965 "upstream sent too big header");
|
|
|
966
|
|
|
967 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
968 return;
|
|
|
969 }
|
|
|
970
|
|
|
971 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
972 ngx_http_upstream_finalize_request(r, u,
|
|
|
973 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
974 return;
|
|
|
975 }
|
|
|
976
|
|
|
977 return;
|
|
|
978 }
|
|
|
979
|
|
|
980 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
981 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
982 return;
|
|
|
983 }
|
|
|
984
|
|
|
985 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
986 ngx_http_upstream_finalize_request(r, u,
|
|
|
987 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
988 return;
|
|
|
989 }
|
|
|
990
|
|
|
991 /* rc == NGX_OK */
|
|
|
992
|
|
78
|
993 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
994
|
|
|
995 if (u->peer.tries > 1
|
|
|
996 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
997 {
|
|
|
998 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
999 return;
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 #if (NGX_HTTP_CACHE)
|
|
|
1003
|
|
|
1004 if (u->peer.tries == 0
|
|
|
1005 && u->stale
|
|
|
1006 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1007 {
|
|
|
1008 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1009 ngx_http_send_cached_response(r));
|
|
58
|
1010 return;
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 #endif
|
|
|
1014 }
|
|
|
1015
|
|
78
|
1016 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
58
|
1017 && u->peer.tries > 1
|
|
|
1018 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1019 {
|
|
|
1020 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1021 return;
|
|
|
1022 }
|
|
|
1023
|
|
|
1024
|
|
78
|
1025 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
1026 && u->conf->redirect_errors
|
|
|
1027 && r->err_ctx == NULL)
|
|
|
1028 {
|
|
130
|
1029 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
|
1030 && u->conf->redirect_404)
|
|
|
1031 {
|
|
|
1032 ngx_http_upstream_finalize_request(r, u, 404);
|
|
|
1033 return;
|
|
|
1034 }
|
|
|
1035
|
|
36
|
1036 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1037
|
|
|
1038 if (clcf->error_pages) {
|
|
|
1039
|
|
|
1040 err_page = clcf->error_pages->elts;
|
|
|
1041 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1042 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1043
|
|
|
1044 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1045
|
|
|
1046 r->headers_out.www_authenticate =
|
|
|
1047 ngx_list_push(&r->headers_out.headers);
|
|
|
1048
|
|
|
1049 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1050 ngx_http_upstream_finalize_request(r, u,
|
|
|
1051 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1052 return;
|
|
|
1053 }
|
|
|
1054
|
|
126
|
1055 *r->headers_out.www_authenticate =
|
|
78
|
1056 *u->headers_in.www_authenticate;
|
|
|
1057 }
|
|
|
1058
|
|
36
|
1059 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1060 u->headers_in.status_n);
|
|
36
|
1061 return;
|
|
|
1062 }
|
|
|
1063 }
|
|
|
1064 }
|
|
|
1065 }
|
|
|
1066
|
|
64
|
1067 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1068 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1069
|
|
|
1070 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1071 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1072
|
|
|
1073 part = &r->upstream->headers_in.headers.part;
|
|
|
1074 h = part->elts;
|
|
|
1075
|
|
|
1076 for (i = 0; /* void */; i++) {
|
|
|
1077
|
|
|
1078 if (i >= part->nelts) {
|
|
|
1079 if (part->next == NULL) {
|
|
|
1080 break;
|
|
|
1081 }
|
|
126
|
1082
|
|
64
|
1083 part = part->next;
|
|
|
1084 h = part->elts;
|
|
|
1085 i = 0;
|
|
|
1086 }
|
|
|
1087
|
|
|
1088 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1089
|
|
|
1090 if (hh[key].redirect
|
|
|
1091 && hh[key].name.len == h[i].key.len
|
|
|
1092 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1093 {
|
|
|
1094 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1095 ngx_http_upstream_finalize_request(r, u,
|
|
|
1096 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1097 return;
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 }
|
|
|
1101 }
|
|
|
1102
|
|
122
|
1103 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1104 args.len = 0;
|
|
|
1105 args.data = NULL;
|
|
|
1106 flags = 0;
|
|
|
1107
|
|
|
1108 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1109 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1110 return;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1114 r->zero_in_uri = 1;
|
|
|
1115 }
|
|
|
1116
|
|
|
1117 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1118 return;
|
|
|
1119 }
|
|
|
1120
|
|
28
|
1121 ngx_http_upstream_send_response(r, u);
|
|
|
1122 }
|
|
|
1123
|
|
|
1124
|
|
36
|
1125 static void
|
|
|
1126 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1127 {
|
|
132
|
1128 int tcp_nodelay;
|
|
130
|
1129 ssize_t size;
|
|
58
|
1130 ngx_int_t rc;
|
|
|
1131 ngx_uint_t i, key;
|
|
|
1132 ngx_list_part_t *part;
|
|
|
1133 ngx_table_elt_t *h;
|
|
|
1134 ngx_event_pipe_t *p;
|
|
132
|
1135 ngx_connection_t *c;
|
|
112
|
1136 ngx_pool_cleanup_t *cl;
|
|
|
1137 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1138 ngx_http_core_loc_conf_t *clcf;
|
|
|
1139 ngx_http_upstream_header_t *hh;
|
|
|
1140 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1141
|
|
|
1142 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1143 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1144
|
|
|
1145 part = &r->upstream->headers_in.headers.part;
|
|
|
1146 h = part->elts;
|
|
|
1147
|
|
|
1148 for (i = 0; /* void */; i++) {
|
|
28
|
1149
|
|
58
|
1150 if (i >= part->nelts) {
|
|
|
1151 if (part->next == NULL) {
|
|
|
1152 break;
|
|
|
1153 }
|
|
126
|
1154
|
|
58
|
1155 part = part->next;
|
|
|
1156 h = part->elts;
|
|
|
1157 i = 0;
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1161
|
|
|
1162 if (hh[key].name.len == h[i].key.len
|
|
|
1163 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1164 {
|
|
|
1165 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1166 ngx_http_upstream_finalize_request(r, u,
|
|
|
1167 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1168 return;
|
|
|
1169 }
|
|
|
1170
|
|
|
1171 continue;
|
|
|
1172 }
|
|
|
1173
|
|
|
1174 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1175 ngx_http_upstream_finalize_request(r, u,
|
|
|
1176 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1177 return;
|
|
|
1178 }
|
|
|
1179 }
|
|
|
1180
|
|
78
|
1181 r->headers_out.status = u->headers_in.status_n;
|
|
|
1182 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1183
|
|
130
|
1184 if (r->headers_out.content_length_n != -1) {
|
|
|
1185 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1186
|
|
|
1187 } else {
|
|
|
1188 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1189 }
|
|
|
1190
|
|
58
|
1191 rc = ngx_http_send_header(r);
|
|
28
|
1192
|
|
34
|
1193 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
1194 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1195 return;
|
|
|
1196 }
|
|
|
1197
|
|
|
1198 u->header_sent = 1;
|
|
|
1199
|
|
122
|
1200 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1201 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1202 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1203 clf = cl->data;
|
|
|
1204
|
|
|
1205 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1206 cl->handler(clf);
|
|
|
1207 cl->handler = NULL;
|
|
|
1208 break;
|
|
|
1209 }
|
|
|
1210 }
|
|
|
1211 }
|
|
|
1212 }
|
|
|
1213
|
|
132
|
1214 c = r->connection;
|
|
|
1215
|
|
130
|
1216 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1217
|
|
|
1218 if (u->pipe == NULL) {
|
|
|
1219
|
|
|
1220 if (u->input_filter == NULL) {
|
|
|
1221 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1222 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1223 u->input_filter_ctx = r;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 u->peer.connection->read->handler =
|
|
|
1227 ngx_http_upstream_process_non_buffered_body;
|
|
|
1228 r->write_event_handler =
|
|
|
1229 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1230
|
|
|
1231 r->limit_rate = 0;
|
|
|
1232
|
|
|
1233 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1234 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1235 return;
|
|
|
1236 }
|
|
|
1237
|
|
132
|
1238 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1239 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1240
|
|
|
1241 tcp_nodelay = 1;
|
|
|
1242
|
|
|
1243 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1244 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1245 {
|
|
|
1246 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1247 "setsockopt(TCP_NODELAY) failed");
|
|
|
1248 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1249 return;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1253 }
|
|
|
1254
|
|
130
|
1255 size = u->buffer.last - u->buffer.pos;
|
|
|
1256
|
|
|
1257 if (size) {
|
|
|
1258 u->buffer.last = u->buffer.pos;
|
|
|
1259
|
|
|
1260 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1261 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1262 return;
|
|
|
1263 }
|
|
|
1264
|
|
132
|
1265 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1266
|
|
|
1267 } else {
|
|
|
1268 u->buffer.pos = u->buffer.start;
|
|
|
1269 u->buffer.last = u->buffer.start;
|
|
|
1270
|
|
|
1271 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1272 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1273 return;
|
|
|
1274 }
|
|
|
1275 }
|
|
|
1276
|
|
|
1277 return;
|
|
|
1278 }
|
|
|
1279
|
|
28
|
1280 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1281
|
|
|
1282 #if 0
|
|
|
1283
|
|
|
1284 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1285 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1286 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1287 ngx_close_file_n " \"%s\" failed",
|
|
|
1288 u->cache->ctx.file.name.data);
|
|
|
1289 }
|
|
|
1290 }
|
|
|
1291
|
|
|
1292 if (u->cachable) {
|
|
130
|
1293 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1294
|
|
|
1295 header->expires = u->cache->ctx.expires;
|
|
|
1296 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1297 header->date = u->cache->ctx.date;
|
|
|
1298 header->length = r->headers_out.content_length_n;
|
|
|
1299 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1300
|
|
|
1301 header->key_len = u->cache->ctx.key0.len;
|
|
|
1302 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1303 header->key[header->key_len] = LF;
|
|
|
1304 }
|
|
|
1305
|
|
|
1306 #endif
|
|
|
1307
|
|
130
|
1308 p = u->pipe;
|
|
28
|
1309
|
|
|
1310 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1311 p->output_ctx = r;
|
|
|
1312 p->tag = u->output.tag;
|
|
126
|
1313 p->bufs = u->conf->bufs;
|
|
28
|
1314 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1315 p->upstream = u->peer.connection;
|
|
132
|
1316 p->downstream = c;
|
|
28
|
1317 p->pool = r->pool;
|
|
132
|
1318 p->log = c->log;
|
|
126
|
1319
|
|
28
|
1320 p->cachable = u->cachable;
|
|
|
1321
|
|
50
|
1322 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1323 if (p->temp_file == NULL) {
|
|
28
|
1324 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1325 return;
|
|
|
1326 }
|
|
|
1327
|
|
|
1328 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1329 p->temp_file->file.log = c->log;
|
|
28
|
1330 p->temp_file->path = u->conf->temp_path;
|
|
|
1331 p->temp_file->pool = r->pool;
|
|
126
|
1332
|
|
28
|
1333 if (u->cachable) {
|
|
|
1334 p->temp_file->persistent = 1;
|
|
|
1335 } else {
|
|
|
1336 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1337 "to a temporary file";
|
|
|
1338 }
|
|
|
1339
|
|
|
1340 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1341 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1342
|
|
50
|
1343 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1344 if (p->preread_bufs == NULL) {
|
|
28
|
1345 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1346 return;
|
|
|
1347 }
|
|
130
|
1348 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1349 p->preread_bufs->next = NULL;
|
|
130
|
1350 u->buffer.recycled = 1;
|
|
|
1351
|
|
|
1352 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1353
|
|
|
1354 if (u->cachable) {
|
|
|
1355 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1356 if (p->buf_to_file == NULL) {
|
|
|
1357 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1358 return;
|
|
|
1359 }
|
|
130
|
1360 p->buf_to_file->pos = u->buffer.start;
|
|
|
1361 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1362 p->buf_to_file->temporary = 1;
|
|
|
1363 }
|
|
|
1364
|
|
|
1365 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1366 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1367 p->single_buf = 1;
|
|
|
1368 }
|
|
|
1369
|
|
|
1370 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1371 p->free_bufs = 1;
|
|
|
1372
|
|
|
1373 /*
|
|
130
|
1374 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1375 * as though these bytes were read
|
|
|
1376 */
|
|
130
|
1377 u->buffer.last = u->buffer.pos;
|
|
28
|
1378
|
|
|
1379 if (u->conf->cyclic_temp_file) {
|
|
|
1380
|
|
|
1381 /*
|
|
|
1382 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1383 * because the writing a new data may interfere with sendfile()
|
|
|
1384 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1385 */
|
|
|
1386
|
|
|
1387 p->cyclic_temp_file = 1;
|
|
132
|
1388 c->sendfile = 0;
|
|
28
|
1389
|
|
|
1390 } else {
|
|
|
1391 p->cyclic_temp_file = 0;
|
|
|
1392 }
|
|
|
1393
|
|
|
1394 p->read_timeout = u->conf->read_timeout;
|
|
|
1395 p->send_timeout = clcf->send_timeout;
|
|
|
1396 p->send_lowat = clcf->send_lowat;
|
|
|
1397
|
|
58
|
1398 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1399 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1400
|
|
|
1401 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1402 }
|
|
|
1403
|
|
|
1404
|
|
36
|
1405 static void
|
|
130
|
1406 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1407 {
|
|
|
1408 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1409 }
|
|
|
1410
|
|
|
1411
|
|
|
1412 static void
|
|
|
1413 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1414 {
|
|
|
1415 size_t size;
|
|
|
1416 ssize_t n;
|
|
|
1417 ngx_buf_t *b;
|
|
132
|
1418 ngx_int_t rc;
|
|
130
|
1419 ngx_uint_t do_write;
|
|
132
|
1420 ngx_connection_t *c, *client;
|
|
130
|
1421 ngx_http_request_t *r;
|
|
|
1422 ngx_http_upstream_t *u;
|
|
|
1423 ngx_http_core_loc_conf_t *clcf;
|
|
|
1424
|
|
|
1425 c = ev->data;
|
|
|
1426
|
|
|
1427 if (ev->write) {
|
|
|
1428 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1429 "http upstream process non buffered downstream");
|
|
|
1430 c->log->action = "sending to client";
|
|
|
1431
|
|
|
1432 } else {
|
|
|
1433 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1434 "http upstream process non buffered upstream");
|
|
|
1435 c->log->action = "reading upstream";
|
|
|
1436 }
|
|
|
1437
|
|
|
1438 if (ev->timedout) {
|
|
|
1439 if (ev->write) {
|
|
|
1440 c->timedout = 1;
|
|
|
1441 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1442 "client timed out");
|
|
|
1443 } else {
|
|
|
1444 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1445 "upstream timed out");
|
|
|
1446 }
|
|
|
1447 }
|
|
|
1448
|
|
|
1449 r = c->data;
|
|
|
1450 u = r->upstream;
|
|
132
|
1451 client = r->connection;
|
|
130
|
1452
|
|
|
1453 b = &u->buffer;
|
|
|
1454
|
|
|
1455 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1456
|
|
|
1457 do_write = ev->write;
|
|
|
1458
|
|
|
1459 for ( ;; ) {
|
|
|
1460
|
|
|
1461 if (do_write) {
|
|
|
1462
|
|
|
1463 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1464 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1465
|
|
|
1466 if (client->destroyed) {
|
|
|
1467 return;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 if (rc == NGX_ERROR) {
|
|
130
|
1471 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1472 return;
|
|
|
1473 }
|
|
|
1474
|
|
|
1475 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1476 &u->out_bufs, u->output.tag);
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 if (u->busy_bufs == NULL) {
|
|
|
1480
|
|
|
1481 if (u->length == 0
|
|
|
1482 || u->peer.connection->read->eof
|
|
|
1483 || u->peer.connection->read->error)
|
|
|
1484 {
|
|
|
1485 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1486 return;
|
|
|
1487 }
|
|
|
1488
|
|
|
1489 b->pos = b->start;
|
|
|
1490 b->last = b->start;
|
|
|
1491 }
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 size = b->end - b->last;
|
|
|
1495
|
|
|
1496 if (size > u->length) {
|
|
|
1497 size = u->length;
|
|
|
1498 }
|
|
|
1499
|
|
|
1500 if (size && u->peer.connection->read->ready) {
|
|
|
1501 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1502
|
|
|
1503 if (n == NGX_AGAIN) {
|
|
|
1504 break;
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 if (n > 0) {
|
|
|
1508 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1509 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1510 return;
|
|
|
1511 }
|
|
|
1512 }
|
|
|
1513
|
|
|
1514 do_write = 1;
|
|
|
1515
|
|
|
1516 continue;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 break;
|
|
|
1520 }
|
|
|
1521
|
|
132
|
1522 if (client->data == r) {
|
|
|
1523 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1524 == NGX_ERROR)
|
|
|
1525 {
|
|
|
1526 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1527 return;
|
|
|
1528 }
|
|
130
|
1529 }
|
|
|
1530
|
|
132
|
1531 if (client->write->active) {
|
|
|
1532 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1533
|
|
|
1534 } else if (client->write->timer_set) {
|
|
|
1535 ngx_del_timer(client->write);
|
|
130
|
1536 }
|
|
|
1537
|
|
|
1538 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1539 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1540 return;
|
|
|
1541 }
|
|
|
1542
|
|
|
1543 if (u->peer.connection->read->active) {
|
|
|
1544 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1545
|
|
132
|
1546 } else if (u->peer.connection->read->timer_set) {
|
|
|
1547 ngx_del_timer(u->peer.connection->read);
|
|
130
|
1548 }
|
|
|
1549 }
|
|
|
1550
|
|
|
1551
|
|
|
1552 static ngx_int_t
|
|
|
1553 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1554 {
|
|
|
1555 return NGX_OK;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558
|
|
|
1559 static ngx_int_t
|
|
|
1560 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1561 {
|
|
|
1562 ngx_http_request_t *r = data;
|
|
|
1563
|
|
|
1564 ngx_buf_t *b;
|
|
|
1565 ngx_chain_t *cl, **ll;
|
|
|
1566 ngx_http_upstream_t *u;
|
|
|
1567
|
|
|
1568 u = r->upstream;
|
|
|
1569
|
|
|
1570 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1571 ll = &cl->next;
|
|
|
1572 }
|
|
|
1573
|
|
|
1574 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1575 if (cl == NULL) {
|
|
|
1576 return NGX_ERROR;
|
|
|
1577 }
|
|
|
1578
|
|
|
1579 *ll = cl;
|
|
|
1580
|
|
|
1581 cl->buf->flush = 1;
|
|
|
1582 cl->buf->memory = 1;
|
|
|
1583
|
|
|
1584 b = &u->buffer;
|
|
|
1585
|
|
|
1586 cl->buf->pos = b->last;
|
|
|
1587 b->last += bytes;
|
|
|
1588 cl->buf->last = b->last;
|
|
|
1589
|
|
|
1590 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1591 return NGX_OK;
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 u->length -= bytes;
|
|
|
1595
|
|
|
1596 return NGX_OK;
|
|
|
1597 }
|
|
|
1598
|
|
|
1599
|
|
|
1600 static void
|
|
58
|
1601 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1602 {
|
|
|
1603 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1604 }
|
|
|
1605
|
|
|
1606
|
|
|
1607 static void
|
|
36
|
1608 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1609 {
|
|
58
|
1610 ngx_event_pipe_t *p;
|
|
132
|
1611 ngx_connection_t *c, *downstream;
|
|
28
|
1612 ngx_http_request_t *r;
|
|
|
1613 ngx_http_upstream_t *u;
|
|
|
1614
|
|
|
1615 c = ev->data;
|
|
|
1616 r = c->data;
|
|
|
1617 u = r->upstream;
|
|
132
|
1618 downstream = r->connection;
|
|
28
|
1619
|
|
|
1620 if (ev->write) {
|
|
32
|
1621 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1622 "http upstream process downstream");
|
|
|
1623 c->log->action = "sending to client";
|
|
126
|
1624
|
|
28
|
1625 } else {
|
|
32
|
1626 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1627 "http upstream process upstream");
|
|
|
1628 c->log->action = "reading upstream";
|
|
28
|
1629 }
|
|
126
|
1630
|
|
130
|
1631 p = u->pipe;
|
|
28
|
1632
|
|
|
1633 if (ev->timedout) {
|
|
|
1634 if (ev->write) {
|
|
76
|
1635 if (ev->delayed) {
|
|
|
1636
|
|
|
1637 ev->timedout = 0;
|
|
|
1638 ev->delayed = 0;
|
|
|
1639
|
|
|
1640 if (!ev->ready) {
|
|
|
1641 ngx_add_timer(ev, p->send_timeout);
|
|
|
1642
|
|
|
1643 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1644 {
|
|
|
1645 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1646 return;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649 return;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1653
|
|
|
1654 if (downstream->destroyed) {
|
|
|
1655 return;
|
|
|
1656 }
|
|
|
1657
|
|
76
|
1658 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1659 return;
|
|
|
1660 }
|
|
|
1661
|
|
|
1662 } else {
|
|
|
1663 p->downstream_error = 1;
|
|
126
|
1664 c->timedout = 1;
|
|
76
|
1665 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1666 "client timed out");
|
|
|
1667 }
|
|
28
|
1668
|
|
|
1669 } else {
|
|
126
|
1670 p->upstream_error = 1;
|
|
28
|
1671 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1672 "upstream timed out");
|
|
|
1673 }
|
|
|
1674
|
|
|
1675 } else {
|
|
76
|
1676 if (ev->write && ev->delayed) {
|
|
|
1677 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1678 "http downstream delayed");
|
|
|
1679
|
|
|
1680 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1681 return;
|
|
|
1682 }
|
|
|
1683
|
|
|
1684 return;
|
|
|
1685 }
|
|
|
1686
|
|
28
|
1687 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
1688
|
|
|
1689 if (downstream->destroyed) {
|
|
|
1690 return;
|
|
|
1691 }
|
|
|
1692
|
|
28
|
1693 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1694 return;
|
|
|
1695 }
|
|
|
1696 }
|
|
126
|
1697
|
|
28
|
1698 if (u->peer.connection) {
|
|
|
1699
|
|
|
1700 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1701
|
|
|
1702 if (p->upstream_done && u->cachable) {
|
|
|
1703 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1704 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1705 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1706 return;
|
|
|
1707 }
|
|
|
1708
|
|
|
1709 } else if (p->upstream_eof && u->cachable) {
|
|
|
1710
|
|
|
1711 /* TODO: check length & update cache */
|
|
|
1712
|
|
|
1713 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1714 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1715 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1716 return;
|
|
|
1717 }
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 #endif
|
|
|
1721
|
|
|
1722 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1723 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1724 "http upstream exit: %p", p->out);
|
|
28
|
1725 #if 0
|
|
|
1726 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1727 #endif
|
|
|
1728 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1729 return;
|
|
|
1730 }
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 if (p->downstream_error) {
|
|
32
|
1734 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1735 "http upstream downstream error");
|
|
28
|
1736
|
|
|
1737 if (!u->cachable && u->peer.connection) {
|
|
|
1738 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1739 }
|
|
|
1740 }
|
|
|
1741 }
|
|
|
1742
|
|
|
1743
|
|
36
|
1744 static void
|
|
|
1745 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1746 {
|
|
|
1747 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1748 "http upstream dummy handler");
|
|
|
1749 }
|
|
|
1750
|
|
|
1751
|
|
36
|
1752 static void
|
|
|
1753 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1754 ngx_uint_t ft_type)
|
|
28
|
1755 {
|
|
74
|
1756 ngx_uint_t status, down;
|
|
28
|
1757
|
|
|
1758 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1759 "http next upstream, %xD", ft_type);
|
|
|
1760
|
|
|
1761 #if 0
|
|
|
1762 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1763 #endif
|
|
|
1764
|
|
74
|
1765 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1766 down = 0;
|
|
|
1767 } else {
|
|
|
1768 down = 1;
|
|
28
|
1769 }
|
|
74
|
1770
|
|
|
1771 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1772
|
|
28
|
1773 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1774 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1775 "upstream timed out");
|
|
|
1776 }
|
|
126
|
1777
|
|
28
|
1778 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1779 status = 0;
|
|
|
1780
|
|
|
1781 } else {
|
|
|
1782 switch(ft_type) {
|
|
|
1783
|
|
|
1784 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1785 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1786 break;
|
|
|
1787
|
|
|
1788 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1789 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1790 break;
|
|
|
1791
|
|
|
1792 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1793 status = NGX_HTTP_NOT_FOUND;
|
|
|
1794 break;
|
|
|
1795
|
|
|
1796 /*
|
|
|
1797 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1798 * never reach here
|
|
|
1799 */
|
|
|
1800
|
|
|
1801 default:
|
|
|
1802 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1803 }
|
|
|
1804 }
|
|
|
1805
|
|
132
|
1806 if (r->connection->error) {
|
|
28
|
1807 ngx_http_upstream_finalize_request(r, u,
|
|
|
1808 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1809 return;
|
|
|
1810 }
|
|
|
1811
|
|
|
1812 if (status) {
|
|
|
1813 u->state->status = status;
|
|
|
1814
|
|
74
|
1815 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1816
|
|
|
1817 #if (NGX_HTTP_CACHE)
|
|
|
1818
|
|
|
1819 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1820 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1821 ngx_http_send_cached_response(r));
|
|
28
|
1822 return;
|
|
|
1823 }
|
|
|
1824
|
|
|
1825 #endif
|
|
|
1826
|
|
|
1827 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1828 return;
|
|
|
1829 }
|
|
|
1830 }
|
|
|
1831
|
|
|
1832 if (u->peer.connection) {
|
|
|
1833 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1834 "close http upstream connection: %d",
|
|
|
1835 u->peer.connection->fd);
|
|
126
|
1836 #if (NGX_HTTP_SSL)
|
|
|
1837 if (u->peer.connection->ssl) {
|
|
|
1838 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1839 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1840 }
|
|
|
1841 #endif
|
|
28
|
1842 ngx_close_connection(u->peer.connection);
|
|
|
1843 }
|
|
|
1844
|
|
|
1845 #if 0
|
|
|
1846 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1847 ngx_http_upstream_busy_lock(p);
|
|
|
1848 return;
|
|
|
1849 }
|
|
|
1850 #endif
|
|
|
1851
|
|
|
1852 ngx_http_upstream_connect(r, u);
|
|
|
1853 }
|
|
|
1854
|
|
|
1855
|
|
36
|
1856 static void
|
|
118
|
1857 ngx_http_upstream_cleanup(void *data)
|
|
|
1858 {
|
|
|
1859 ngx_http_request_t *r = data;
|
|
|
1860
|
|
|
1861 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1862 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1863
|
|
|
1864 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1865 }
|
|
|
1866
|
|
|
1867
|
|
|
1868 static void
|
|
36
|
1869 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1870 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1871 {
|
|
112
|
1872 ngx_time_t *tp;
|
|
|
1873
|
|
32
|
1874 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1875 "finalize http upstream request: %i", rc);
|
|
28
|
1876
|
|
118
|
1877 *u->cleanup = NULL;
|
|
|
1878
|
|
112
|
1879 if (u->state->response_time) {
|
|
|
1880 tp = ngx_timeofday();
|
|
|
1881 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1882 - u->state->response_time;
|
|
|
1883 }
|
|
|
1884
|
|
28
|
1885 u->finalize_request(r, rc);
|
|
|
1886
|
|
|
1887 if (u->peer.connection) {
|
|
|
1888 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1889 "close http upstream connection: %d",
|
|
|
1890 u->peer.connection->fd);
|
|
126
|
1891 #if (NGX_HTTP_SSL)
|
|
|
1892
|
|
|
1893 /* TODO: do not shutdown persistent connection */
|
|
|
1894
|
|
|
1895 if (u->peer.connection->ssl) {
|
|
|
1896 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1897 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1898 }
|
|
|
1899 #endif
|
|
28
|
1900 ngx_close_connection(u->peer.connection);
|
|
|
1901 }
|
|
|
1902
|
|
32
|
1903 u->peer.connection = NULL;
|
|
|
1904
|
|
112
|
1905 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1906 {
|
|
|
1907 rc = 0;
|
|
|
1908 }
|
|
|
1909
|
|
130
|
1910 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
1911 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1912 "http upstream temp fd: %d",
|
|
130
|
1913 u->pipe->temp_file->file.fd);
|
|
28
|
1914 }
|
|
|
1915
|
|
|
1916 #if 0
|
|
|
1917 if (u->cache) {
|
|
|
1918 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1919 "http upstream cache fd: %d",
|
|
28
|
1920 u->cache->ctx.file.fd);
|
|
|
1921 }
|
|
|
1922 #endif
|
|
|
1923
|
|
58
|
1924 r->log_handler = u->saved_log_handler;
|
|
64
|
1925
|
|
|
1926 if (rc == NGX_DECLINED) {
|
|
|
1927 return;
|
|
|
1928 }
|
|
|
1929
|
|
32
|
1930 r->connection->log->action = "sending to client";
|
|
|
1931
|
|
102
|
1932 if (rc == 0 && r->main == r) {
|
|
130
|
1933 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
1934 }
|
|
|
1935
|
|
|
1936 ngx_http_finalize_request(r, rc);
|
|
|
1937 }
|
|
|
1938
|
|
|
1939
|
|
126
|
1940 #if (NGX_HTTP_SSL)
|
|
|
1941
|
|
|
1942 static void
|
|
|
1943 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1944 {
|
|
|
1945 /* lock peer mutex */
|
|
|
1946
|
|
|
1947 if (peer->ssl_session) {
|
|
|
1948 ngx_ssl_free_session(peer->ssl_session);
|
|
|
1949 }
|
|
|
1950
|
|
|
1951 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
1952
|
|
|
1953 /* unlock peer mutex */
|
|
|
1954
|
|
|
1955 /*
|
|
|
1956 * We send the "close notify" shutdown alert to the upstream only
|
|
|
1957 * and do not wait its "close notify" shutdown alert.
|
|
|
1958 * It is acceptable according to the TLS standard.
|
|
|
1959 */
|
|
|
1960
|
|
|
1961 c->ssl->no_wait_shutdown = 1;
|
|
|
1962
|
|
|
1963 (void) ngx_ssl_shutdown(c);
|
|
|
1964 }
|
|
|
1965
|
|
|
1966 #endif
|
|
|
1967
|
|
|
1968
|
|
58
|
1969 static ngx_int_t
|
|
|
1970 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1971 ngx_uint_t offset)
|
|
126
|
1972 {
|
|
58
|
1973 ngx_table_elt_t **ph;
|
|
126
|
1974
|
|
58
|
1975 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1976
|
|
|
1977 if (*ph == NULL) {
|
|
|
1978 *ph = h;
|
|
|
1979 }
|
|
|
1980
|
|
|
1981 return NGX_OK;
|
|
|
1982 }
|
|
|
1983
|
|
|
1984
|
|
|
1985 static ngx_int_t
|
|
|
1986 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
1987 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1988 {
|
|
|
1989 ngx_array_t *pa;
|
|
|
1990 ngx_table_elt_t **ph;
|
|
|
1991
|
|
|
1992 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
1993
|
|
|
1994 if (pa->elts == NULL) {
|
|
|
1995 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1996 {
|
|
|
1997 return NGX_ERROR;
|
|
|
1998 }
|
|
|
1999 }
|
|
|
2000
|
|
|
2001 ph = ngx_array_push(pa);
|
|
|
2002 if (ph == NULL) {
|
|
|
2003 return NGX_ERROR;
|
|
|
2004 }
|
|
|
2005
|
|
|
2006 *ph = h;
|
|
|
2007
|
|
|
2008 return NGX_OK;
|
|
|
2009 }
|
|
|
2010
|
|
|
2011
|
|
|
2012 static ngx_int_t
|
|
|
2013 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2014 ngx_uint_t offset)
|
|
|
2015 {
|
|
|
2016 return NGX_OK;
|
|
|
2017 }
|
|
|
2018
|
|
|
2019
|
|
|
2020 static ngx_int_t
|
|
76
|
2021 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2022 ngx_uint_t offset)
|
|
126
|
2023 {
|
|
76
|
2024 ngx_int_t n;
|
|
|
2025
|
|
|
2026 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2027
|
|
|
2028 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2029
|
|
|
2030 if (n != NGX_ERROR) {
|
|
|
2031 r->limit_rate = (size_t) n;
|
|
|
2032 }
|
|
|
2033
|
|
|
2034 return NGX_OK;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037
|
|
|
2038 static ngx_int_t
|
|
58
|
2039 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2040 ngx_uint_t offset)
|
|
|
2041 {
|
|
122
|
2042 ngx_table_elt_t *ho, **ph;
|
|
58
|
2043
|
|
|
2044 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2045 if (ho == NULL) {
|
|
|
2046 return NGX_ERROR;
|
|
|
2047 }
|
|
|
2048
|
|
|
2049 *ho = *h;
|
|
|
2050
|
|
122
|
2051 if (offset) {
|
|
|
2052 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2053 *ph = ho;
|
|
|
2054 }
|
|
|
2055
|
|
58
|
2056 return NGX_OK;
|
|
|
2057 }
|
|
|
2058
|
|
|
2059
|
|
|
2060 static ngx_int_t
|
|
|
2061 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
2062 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2063 {
|
|
|
2064 ngx_flag_t *f;
|
|
|
2065 ngx_table_elt_t *ho;
|
|
|
2066
|
|
|
2067 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
2068
|
|
|
2069 if (*f == 0) {
|
|
|
2070 return NGX_OK;
|
|
|
2071 }
|
|
|
2072
|
|
|
2073 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2074 if (ho == NULL) {
|
|
|
2075 return NGX_ERROR;
|
|
|
2076 }
|
|
|
2077
|
|
|
2078 *ho = *h;
|
|
|
2079
|
|
|
2080 return NGX_OK;
|
|
|
2081 }
|
|
|
2082
|
|
|
2083
|
|
|
2084 static ngx_int_t
|
|
|
2085 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2086 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2087 {
|
|
|
2088 ngx_array_t *pa;
|
|
|
2089 ngx_table_elt_t *ho, **ph;
|
|
|
2090
|
|
|
2091 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2092
|
|
|
2093 if (pa->elts == NULL) {
|
|
|
2094 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2095 {
|
|
|
2096 return NGX_ERROR;
|
|
|
2097 }
|
|
|
2098 }
|
|
|
2099
|
|
|
2100 ph = ngx_array_push(pa);
|
|
|
2101 if (ph == NULL) {
|
|
|
2102 return NGX_ERROR;
|
|
|
2103 }
|
|
|
2104
|
|
|
2105 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2106 if (ho == NULL) {
|
|
|
2107 return NGX_ERROR;
|
|
|
2108 }
|
|
|
2109
|
|
|
2110 *ho = *h;
|
|
|
2111 *ph = ho;
|
|
|
2112
|
|
|
2113 return NGX_OK;
|
|
|
2114 }
|
|
|
2115
|
|
|
2116
|
|
|
2117 static ngx_int_t
|
|
|
2118 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2119 ngx_uint_t offset)
|
|
|
2120 {
|
|
|
2121 r->headers_out.content_type = h->value;
|
|
|
2122
|
|
|
2123 return NGX_OK;
|
|
|
2124 }
|
|
|
2125
|
|
|
2126
|
|
|
2127 static ngx_int_t
|
|
|
2128 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2129 ngx_uint_t offset)
|
|
|
2130 {
|
|
|
2131 ngx_table_elt_t *ho;
|
|
|
2132
|
|
|
2133 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2134 if (ho == NULL) {
|
|
|
2135 return NGX_ERROR;
|
|
|
2136 }
|
|
|
2137
|
|
|
2138 *ho = *h;
|
|
|
2139
|
|
|
2140 r->headers_out.content_length = ho;
|
|
|
2141 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2142
|
|
|
2143 return NGX_OK;
|
|
|
2144 }
|
|
|
2145
|
|
|
2146
|
|
|
2147 static ngx_int_t
|
|
|
2148 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2149 ngx_uint_t offset)
|
|
|
2150 {
|
|
|
2151 ngx_int_t rc;
|
|
|
2152 ngx_table_elt_t *ho;
|
|
|
2153
|
|
|
2154 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2155 if (ho == NULL) {
|
|
|
2156 return NGX_ERROR;
|
|
|
2157 }
|
|
|
2158
|
|
|
2159 *ho = *h;
|
|
|
2160
|
|
|
2161 if (r->upstream->rewrite_redirect) {
|
|
|
2162 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2163
|
|
78
|
2164 if (rc == NGX_DECLINED) {
|
|
|
2165 return NGX_OK;
|
|
|
2166 }
|
|
|
2167
|
|
58
|
2168 if (rc == NGX_OK) {
|
|
|
2169 r->headers_out.location = ho;
|
|
|
2170
|
|
|
2171 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2172 "rewritten location: \"%V\"", &ho->value);
|
|
|
2173 }
|
|
|
2174
|
|
|
2175 return rc;
|
|
|
2176 }
|
|
|
2177
|
|
|
2178 /*
|
|
|
2179 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2180 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2181 */
|
|
|
2182
|
|
|
2183 return NGX_OK;
|
|
|
2184 }
|
|
|
2185
|
|
|
2186
|
|
|
2187 static ngx_int_t
|
|
|
2188 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2189 ngx_uint_t offset)
|
|
|
2190 {
|
|
|
2191 u_char *p;
|
|
|
2192 ngx_int_t rc;
|
|
|
2193 ngx_table_elt_t *ho;
|
|
|
2194
|
|
|
2195 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2196 if (ho == NULL) {
|
|
|
2197 return NGX_ERROR;
|
|
|
2198 }
|
|
|
2199
|
|
|
2200 *ho = *h;
|
|
|
2201
|
|
|
2202 if (r->upstream->rewrite_redirect) {
|
|
|
2203
|
|
|
2204 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2205
|
|
|
2206 if (p) {
|
|
|
2207 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2208
|
|
|
2209 } else {
|
|
|
2210 return NGX_OK;
|
|
|
2211 }
|
|
|
2212
|
|
78
|
2213 if (rc == NGX_DECLINED) {
|
|
|
2214 return NGX_OK;
|
|
|
2215 }
|
|
|
2216
|
|
58
|
2217 #if (NGX_DEBUG)
|
|
|
2218 if (rc == NGX_OK) {
|
|
|
2219 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2220 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2221 }
|
|
|
2222 #endif
|
|
|
2223
|
|
|
2224 return rc;
|
|
|
2225 }
|
|
|
2226
|
|
|
2227 return NGX_OK;
|
|
|
2228 }
|
|
|
2229
|
|
|
2230
|
|
|
2231 #if (NGX_HTTP_GZIP)
|
|
|
2232
|
|
|
2233 static ngx_int_t
|
|
|
2234 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2235 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2236 {
|
|
|
2237 ngx_table_elt_t *ho;
|
|
|
2238
|
|
|
2239 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2240 if (ho == NULL) {
|
|
|
2241 return NGX_ERROR;
|
|
|
2242 }
|
|
|
2243
|
|
|
2244 *ho = *h;
|
|
|
2245
|
|
|
2246 r->headers_out.content_encoding = ho;
|
|
|
2247
|
|
|
2248 return NGX_OK;
|
|
|
2249 }
|
|
|
2250
|
|
|
2251 #endif
|
|
|
2252
|
|
|
2253
|
|
36
|
2254 static size_t
|
|
|
2255 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
2256 {
|
|
|
2257 if (r->upstream) {
|
|
|
2258 return r->upstream->states.nelts * (3 + 2);
|
|
|
2259 }
|
|
|
2260
|
|
|
2261 return 1;
|
|
|
2262 }
|
|
|
2263
|
|
|
2264
|
|
36
|
2265 static u_char *
|
|
|
2266 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2267 ngx_http_log_op_t *op)
|
|
28
|
2268 {
|
|
|
2269 ngx_uint_t i;
|
|
|
2270 ngx_http_upstream_t *u;
|
|
|
2271 ngx_http_upstream_state_t *state;
|
|
|
2272
|
|
|
2273 u = r->upstream;
|
|
|
2274
|
|
122
|
2275 if (u == NULL || u->states.nelts == 0) {
|
|
28
|
2276 *buf = '-';
|
|
|
2277 return buf + 1;
|
|
|
2278 }
|
|
|
2279
|
|
|
2280 i = 0;
|
|
|
2281 state = u->states.elts;
|
|
|
2282
|
|
|
2283 for ( ;; ) {
|
|
|
2284 if (state[i].status == 0) {
|
|
|
2285 *buf++ = '-';
|
|
|
2286
|
|
|
2287 } else {
|
|
|
2288 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2289 }
|
|
|
2290
|
|
|
2291 if (++i == u->states.nelts) {
|
|
|
2292 return buf;
|
|
|
2293 }
|
|
|
2294
|
|
|
2295 *buf++ = ',';
|
|
|
2296 *buf++ = ' ';
|
|
|
2297 }
|
|
|
2298 }
|
|
|
2299
|
|
|
2300
|
|
122
|
2301 static size_t
|
|
|
2302 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2303 uintptr_t data)
|
|
|
2304 {
|
|
|
2305 if (r->upstream) {
|
|
|
2306 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2307 }
|
|
|
2308
|
|
|
2309 return 1;
|
|
|
2310 }
|
|
|
2311
|
|
|
2312
|
|
58
|
2313 static u_char *
|
|
112
|
2314 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2315 ngx_http_log_op_t *op)
|
|
|
2316 {
|
|
|
2317 ngx_uint_t i;
|
|
|
2318 ngx_http_upstream_t *u;
|
|
|
2319 ngx_http_upstream_state_t *state;
|
|
|
2320
|
|
|
2321 u = r->upstream;
|
|
|
2322
|
|
122
|
2323 if (u == NULL || u->states.nelts == 0) {
|
|
112
|
2324 *buf = '-';
|
|
|
2325 return buf + 1;
|
|
|
2326 }
|
|
|
2327
|
|
|
2328 i = 0;
|
|
|
2329 state = u->states.elts;
|
|
|
2330
|
|
|
2331 for ( ;; ) {
|
|
|
2332 if (state[i].status == 0) {
|
|
|
2333 *buf++ = '-';
|
|
|
2334
|
|
|
2335 } else {
|
|
|
2336 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2337 state[i].response_time / 1000,
|
|
|
2338 state[i].response_time % 1000);
|
|
|
2339 }
|
|
|
2340
|
|
|
2341 if (++i == u->states.nelts) {
|
|
|
2342 return buf;
|
|
|
2343 }
|
|
|
2344
|
|
|
2345 *buf++ = ',';
|
|
|
2346 *buf++ = ' ';
|
|
|
2347 }
|
|
|
2348 }
|
|
|
2349
|
|
|
2350
|
|
|
2351 static u_char *
|
|
58
|
2352 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
2353 {
|
|
|
2354 u_char *p;
|
|
|
2355 ngx_http_upstream_t *u;
|
|
|
2356 ngx_peer_connection_t *peer;
|
|
|
2357
|
|
|
2358 u = r->upstream;
|
|
|
2359 peer = &u->peer;
|
|
|
2360
|
|
|
2361 p = ngx_snprintf(buf, len,
|
|
58
|
2362 ", server: %V, URL: \"%V\","
|
|
118
|
2363 " upstream: \"%V%V%s%V\"",
|
|
52
|
2364 &r->server_name,
|
|
28
|
2365 &r->unparsed_uri,
|
|
58
|
2366 &u->conf->schema,
|
|
28
|
2367 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2368 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
2369 &u->uri);
|
|
28
|
2370 len -= p - buf;
|
|
|
2371 buf = p;
|
|
|
2372
|
|
54
|
2373 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
2374 }
|
|
|
2375
|
|
|
2376
|
|
36
|
2377 static ngx_int_t
|
|
122
|
2378 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2379 {
|
|
122
|
2380 ngx_http_variable_t *var, *v;
|
|
28
|
2381 ngx_http_log_op_name_t *op;
|
|
|
2382
|
|
122
|
2383 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2384 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2385 if (var == NULL) {
|
|
|
2386 return NGX_ERROR;
|
|
|
2387 }
|
|
|
2388
|
|
|
2389 var->handler = v->handler;
|
|
|
2390 var->data = v->data;
|
|
|
2391 }
|
|
|
2392
|
|
28
|
2393 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2394 op->run = NULL;
|
|
|
2395
|
|
|
2396 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2397 if (op->name.len == 0) {
|
|
|
2398 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2399 }
|
|
|
2400 }
|
|
|
2401
|
|
|
2402 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2403
|
|
|
2404 return NGX_OK;
|
|
|
2405 }
|
|
58
|
2406
|
|
|
2407
|
|
122
|
2408 static ngx_int_t
|
|
|
2409 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2410 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2411 {
|
|
|
2412 u_char *p;
|
|
|
2413 size_t len;
|
|
|
2414 ngx_uint_t i;
|
|
|
2415 ngx_http_upstream_t *u;
|
|
|
2416 ngx_http_upstream_state_t *state;
|
|
|
2417
|
|
|
2418 v->valid = 1;
|
|
|
2419 v->no_cachable = 0;
|
|
|
2420 v->not_found = 0;
|
|
|
2421
|
|
|
2422 u = r->upstream;
|
|
|
2423
|
|
|
2424 if (u == NULL || u->states.nelts == 0) {
|
|
|
2425 v->not_found = 1;
|
|
|
2426 return NGX_OK;
|
|
|
2427 }
|
|
|
2428
|
|
|
2429 len = u->states.nelts * (3 + 2);
|
|
|
2430
|
|
|
2431 p = ngx_palloc(r->pool, len);
|
|
|
2432 if (p == NULL) {
|
|
|
2433 return NGX_ERROR;
|
|
|
2434 }
|
|
|
2435
|
|
|
2436 v->data = p;
|
|
|
2437
|
|
|
2438 i = 0;
|
|
|
2439 state = u->states.elts;
|
|
|
2440
|
|
|
2441 for ( ;; ) {
|
|
|
2442 if (state[i].status == 0) {
|
|
|
2443 *p++ = '-';
|
|
|
2444
|
|
|
2445 } else {
|
|
|
2446 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2447 }
|
|
|
2448
|
|
|
2449 if (++i == u->states.nelts) {
|
|
|
2450 break;
|
|
|
2451 }
|
|
|
2452
|
|
|
2453 *p++ = ',';
|
|
|
2454 *p++ = ' ';
|
|
|
2455 }
|
|
|
2456
|
|
|
2457 v->len = p - v->data;
|
|
|
2458
|
|
|
2459 return NGX_OK;
|
|
|
2460 }
|
|
|
2461
|
|
|
2462
|
|
|
2463 static ngx_int_t
|
|
|
2464 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2465 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2466 {
|
|
|
2467 u_char *p;
|
|
|
2468 size_t len;
|
|
|
2469 ngx_uint_t i;
|
|
|
2470 ngx_http_upstream_t *u;
|
|
|
2471 ngx_http_upstream_state_t *state;
|
|
|
2472
|
|
|
2473 v->valid = 1;
|
|
|
2474 v->no_cachable = 0;
|
|
|
2475 v->not_found = 0;
|
|
|
2476
|
|
|
2477 u = r->upstream;
|
|
|
2478
|
|
|
2479 if (u == NULL || u->states.nelts == 0) {
|
|
|
2480 v->not_found = 1;
|
|
|
2481 return NGX_OK;
|
|
|
2482 }
|
|
|
2483
|
|
|
2484 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2485
|
|
|
2486 p = ngx_palloc(r->pool, len);
|
|
|
2487 if (p == NULL) {
|
|
|
2488 return NGX_ERROR;
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 v->data = p;
|
|
|
2492
|
|
|
2493 i = 0;
|
|
|
2494 state = u->states.elts;
|
|
|
2495
|
|
|
2496 for ( ;; ) {
|
|
|
2497 if (state[i].status == 0) {
|
|
|
2498 *p++ = '-';
|
|
|
2499
|
|
|
2500 } else {
|
|
|
2501 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2502 state[i].response_time / 1000,
|
|
|
2503 state[i].response_time % 1000);
|
|
|
2504 }
|
|
|
2505
|
|
|
2506 if (++i == u->states.nelts) {
|
|
|
2507 break;
|
|
|
2508 }
|
|
|
2509
|
|
|
2510 *p++ = ',';
|
|
|
2511 *p++ = ' ';
|
|
|
2512 }
|
|
|
2513
|
|
|
2514 v->len = p - v->data;
|
|
|
2515
|
|
|
2516 return NGX_OK;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519
|
|
58
|
2520 static void *
|
|
|
2521 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2522 {
|
|
|
2523 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2524
|
|
|
2525 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2526 if (umcf == NULL) {
|
|
|
2527 return NULL;
|
|
|
2528 }
|
|
|
2529
|
|
|
2530 return umcf;
|
|
|
2531 }
|
|
|
2532
|
|
|
2533
|
|
|
2534 static char *
|
|
|
2535 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
2536 {
|
|
|
2537 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2538
|
|
126
|
2539 umcf->headers_in_hash.max_size = 100;
|
|
58
|
2540 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
2541 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
2542 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
2543
|
|
138
|
2544 if (ngx_hash0_init(&umcf->headers_in_hash, cf->pool,
|
|
58
|
2545 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
2546 {
|
|
|
2547 return NGX_CONF_ERROR;
|
|
|
2548 }
|
|
|
2549
|
|
|
2550 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
2551 "http upstream headers_in hash size: %ui, "
|
|
|
2552 "max buckets per entry: %ui",
|
|
|
2553 umcf->headers_in_hash.hash_size,
|
|
|
2554 umcf->headers_in_hash.min_buckets);
|
|
|
2555
|
|
|
2556 return NGX_CONF_OK;
|
|
|
2557 }
|
