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479
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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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509
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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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479
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16 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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487
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17 ngx_http_upstream_t *u);
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509
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18 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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487
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19 ngx_http_upstream_t *u);
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479
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20 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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487
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21 ngx_http_upstream_t *u);
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479
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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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487
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25 ngx_http_upstream_t *u);
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581
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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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509
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32 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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479
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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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487
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36 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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569
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37 static void ngx_http_upstream_cleanup(void *data);
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479
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38 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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487
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39 ngx_http_upstream_t *u, ngx_int_t rc);
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479
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40
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509
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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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527
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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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509
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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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479
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71 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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487
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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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573
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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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563
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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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479
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79
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509
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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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573
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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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509
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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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577
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92 #if (NGX_HTTP_SSL)
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591
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93 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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94 ngx_http_upstream_t *u, ngx_connection_t *c);
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577
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95 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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96 static void ngx_http_upstream_ssl_shutdown(ngx_connection_t *c,
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97 ngx_peer_t *peer);
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98 #endif
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99
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509
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100
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101 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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102
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103 { ngx_string("Status"),
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104 ngx_http_upstream_process_header_line,
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105 offsetof(ngx_http_upstream_headers_in_t, status),
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515
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106 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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509
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107
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108 { ngx_string("Content-Type"),
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109 ngx_http_upstream_process_header_line,
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110 offsetof(ngx_http_upstream_headers_in_t, content_type),
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515
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111 ngx_http_upstream_copy_content_type, 0, 0 },
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509
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112
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113 { ngx_string("Content-Length"),
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114 ngx_http_upstream_process_header_line,
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115 offsetof(ngx_http_upstream_headers_in_t, content_length),
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515
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116 ngx_http_upstream_copy_content_length, 0, 0 },
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509
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117
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118 { ngx_string("Date"),
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119 ngx_http_upstream_process_header_line,
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120 offsetof(ngx_http_upstream_headers_in_t, date),
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121 ngx_http_upstream_conditional_copy_header_line,
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515
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122 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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509
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123
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124 { ngx_string("Server"),
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125 ngx_http_upstream_process_header_line,
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126 offsetof(ngx_http_upstream_headers_in_t, server),
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127 ngx_http_upstream_conditional_copy_header_line,
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515
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128 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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509
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129
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529
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130 { ngx_string("WWW-Authenticate"),
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131 ngx_http_upstream_process_header_line,
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132 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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133 ngx_http_upstream_copy_header_line, 0, 0 },
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134
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509
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135 { ngx_string("Location"),
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136 ngx_http_upstream_ignore_header_line, 0,
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515
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137 ngx_http_upstream_rewrite_location, 0, 0 },
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509
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138
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139 { ngx_string("Refresh"),
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140 ngx_http_upstream_ignore_header_line, 0,
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515
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141 ngx_http_upstream_rewrite_refresh, 0, 0 },
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142
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143 { ngx_string("Set-Cookie"),
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144 ngx_http_upstream_ignore_header_line, 0,
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531
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145 ngx_http_upstream_copy_header_line, 0, 1 },
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146
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147 { ngx_string("Content-Disposition"),
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148 ngx_http_upstream_ignore_header_line, 0,
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149 ngx_http_upstream_copy_header_line, 0, 1 },
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509
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150
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151 { ngx_string("Cache-Control"),
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152 ngx_http_upstream_process_multi_header_lines,
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153 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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154 ngx_http_upstream_copy_multi_header_lines,
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515
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155 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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509
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156
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573
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157 { ngx_string("Expires"),
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158 ngx_http_upstream_process_header_line,
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159 offsetof(ngx_http_upstream_headers_in_t, expires),
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160 ngx_http_upstream_copy_header_line,
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161 offsetof(ngx_http_headers_out_t, expires), 1 },
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162
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577
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163 { ngx_string("Accept-Ranges"),
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164 ngx_http_upstream_process_header_line,
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165 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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166 ngx_http_upstream_copy_header_line,
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167 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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168
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509
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169 { ngx_string("Connection"),
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170 ngx_http_upstream_ignore_header_line, 0,
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515
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171 ngx_http_upstream_ignore_header_line, 0, 0 },
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509
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172
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173 { ngx_string("X-Pad"),
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174 ngx_http_upstream_ignore_header_line, 0,
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515
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175 ngx_http_upstream_ignore_header_line, 0, 0 },
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509
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176
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177 { ngx_string("X-Powered-By"),
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178 ngx_http_upstream_ignore_header_line, 0,
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179 ngx_http_upstream_conditional_copy_header_line,
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515
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180 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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509
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181
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182 { ngx_string("X-Accel-Expires"),
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183 ngx_http_upstream_process_header_line,
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184 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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185 ngx_http_upstream_conditional_copy_header_line,
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515
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186 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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187
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188 { ngx_string("X-Accel-Redirect"),
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189 ngx_http_upstream_process_header_line,
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190 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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191 ngx_http_upstream_ignore_header_line, 0, 0 },
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509
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192
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527
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193 { ngx_string("X-Accel-Limit-Rate"),
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194 ngx_http_upstream_process_limit_rate, 0,
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195 ngx_http_upstream_ignore_header_line, 0, 0 },
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196
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509
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197 #if (NGX_HTTP_GZIP)
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198 { ngx_string("Content-Encoding"),
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199 ngx_http_upstream_process_header_line,
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200 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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515
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201 ngx_http_upstream_copy_content_encoding, 0, 0 },
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509
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202 #endif
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203
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515
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204 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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509
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205 };
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479
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206
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207
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208 ngx_http_module_t ngx_http_upstream_module_ctx = {
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573
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209 ngx_http_upstream_add_variables, /* preconfiguration */
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509
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210 NULL, /* postconfiguration */
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211
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212 ngx_http_upstream_create_main_conf, /* create main configuration */
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213 ngx_http_core_init_main_conf, /* init main configuration */
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479
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214
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215 NULL, /* create server configuration */
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216 NULL, /* merge server configuration */
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217
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218 NULL, /* create location configuration */
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219 NULL /* merge location configuration */
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220 };
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577
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221
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479
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222
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223 ngx_module_t ngx_http_upstream_module = {
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509
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224 NGX_MODULE_V1,
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479
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225 &ngx_http_upstream_module_ctx, /* module context */
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226 NULL, /* module directives */
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227 NGX_HTTP_MODULE, /* module type */
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541
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228 NULL, /* init master */
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479
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229 NULL, /* init module */
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541
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230 NULL, /* init process */
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231 NULL, /* init thread */
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232 NULL, /* exit thread */
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233 NULL, /* exit process */
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234 NULL, /* exit master */
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235 NGX_MODULE_V1_PADDING
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479
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236 };
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237
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238
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583
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239 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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479
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240 { ngx_string("upstream_status"), 0, NULL,
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573
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241 ngx_http_upstream_log_status_getlen,
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242 ngx_http_upstream_log_status },
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243 { ngx_string("upstream_response_time"), 0, NULL,
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244 ngx_http_upstream_log_response_time_getlen,
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245 ngx_http_upstream_log_response_time },
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479
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246 { ngx_null_string, 0, NULL, NULL, NULL }
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247 };
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248
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249
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573
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250 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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251
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252 { ngx_string("upstream_status"),
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583
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253 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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573
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254
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255 { ngx_string("upstream_response_time"),
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583
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256 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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573
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257
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258 { ngx_null_string, NULL, 0, 0, 0 }
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259 };
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260
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261
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487
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262 void
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263 ngx_http_upstream_init(ngx_http_request_t *r)
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479
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264 {
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563
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265 ngx_time_t *tp;
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509
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266 ngx_connection_t *c;
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569
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267 ngx_http_cleanup_t *cln;
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509
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268 ngx_http_upstream_t *u;
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269 ngx_http_core_loc_conf_t *clcf;
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479
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270
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271 c = r->connection;
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272
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273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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274 "http init upstream, client timer: %d", c->read->timer_set);
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275
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276 if (c->read->timer_set) {
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277 ngx_del_timer(c->read);
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278 }
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279
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629
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280 u = r->upstream;
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281
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282 if (!r->post_action && !u->conf->ignore_client_abort) {
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615
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283 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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284 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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285 }
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577
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286
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479
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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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531
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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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479
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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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537
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299 if (r->request_body) {
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300 u->request_bufs = r->request_body->bufs;
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301 }
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509
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302
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537
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303 if (u->create_request(r) != NGX_OK) {
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479
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304 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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305 return;
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306 }
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307
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308 u->peer.log = r->connection->log;
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509
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309 u->saved_log_handler = r->log_handler;
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310 r->log_handler = ngx_http_upstream_log_error;
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311
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312 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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479
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313
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314 u->output.sendfile = r->connection->sendfile;
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315 u->output.pool = r->pool;
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316 u->output.bufs.num = 1;
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509
|
317 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
479
|
318 u->output.output_filter = ngx_chain_writer;
|
|
|
319 u->output.filter_ctx = &u->writer;
|
|
|
320
|
|
|
321 u->writer.pool = r->pool;
|
|
|
322
|
|
|
323 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
|
|
569
|
324 sizeof(ngx_http_upstream_state_t))
|
|
|
325 != NGX_OK)
|
|
479
|
326 {
|
|
|
327 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
328 return;
|
|
|
329 }
|
|
|
330
|
|
501
|
331 u->state = ngx_array_push(&u->states);
|
|
|
332 if (u->state == NULL) {
|
|
479
|
333 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
334 return;
|
|
|
335 }
|
|
|
336
|
|
|
337 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
338
|
|
563
|
339 tp = ngx_timeofday();
|
|
|
340
|
|
|
341 u->state->response_time = tp->sec * 1000 + tp->msec;
|
|
|
342
|
|
593
|
343 cln = ngx_http_cleanup_add(r, 0);
|
|
569
|
344 if (cln == NULL) {
|
|
|
345 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
346 return;
|
|
|
347 }
|
|
|
348
|
|
|
349 cln->handler = ngx_http_upstream_cleanup;
|
|
|
350 cln->data = r;
|
|
|
351 u->cleanup = &cln->handler;
|
|
|
352
|
|
479
|
353 ngx_http_upstream_connect(r, u);
|
|
|
354 }
|
|
|
355
|
|
|
356
|
|
487
|
357 static void
|
|
509
|
358 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
359 {
|
|
|
360 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
361 }
|
|
|
362
|
|
|
363
|
|
|
364 static void
|
|
|
365 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
366 {
|
|
|
367 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
368 }
|
|
|
369
|
|
|
370
|
|
|
371 static void
|
|
|
372 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
373 ngx_event_t *ev)
|
|
479
|
374 {
|
|
|
375 int n;
|
|
|
376 char buf[1];
|
|
577
|
377 ngx_err_t err;
|
|
479
|
378 ngx_connection_t *c;
|
|
|
379 ngx_http_upstream_t *u;
|
|
|
380
|
|
527
|
381 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
382 "http upstream check client, write event:%d, \"%V\"",
|
|
|
383 ev->write, &r->uri);
|
|
479
|
384
|
|
509
|
385 c = r->connection;
|
|
483
|
386 u = r->upstream;
|
|
|
387
|
|
583
|
388 if (c->error) {
|
|
527
|
389 ngx_http_upstream_finalize_request(r, u,
|
|
|
390 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
391 return;
|
|
|
392 }
|
|
|
393
|
|
483
|
394 if (u->peer.connection == NULL) {
|
|
|
395 return;
|
|
|
396 }
|
|
|
397
|
|
479
|
398 #if (NGX_HAVE_KQUEUE)
|
|
|
399
|
|
|
400 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
401
|
|
|
402 if (!ev->pending_eof) {
|
|
|
403 return;
|
|
|
404 }
|
|
|
405
|
|
|
406 ev->eof = 1;
|
|
583
|
407 c->error = 1;
|
|
479
|
408
|
|
|
409 if (ev->kq_errno) {
|
|
|
410 ev->error = 1;
|
|
|
411 }
|
|
|
412
|
|
|
413 if (!u->cachable && u->peer.connection) {
|
|
|
414 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
527
|
415 "kevent() reported that client closed prematurely "
|
|
|
416 "connection, so upstream connection is closed too");
|
|
479
|
417 ngx_http_upstream_finalize_request(r, u,
|
|
|
418 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
419 return;
|
|
|
420 }
|
|
|
421
|
|
|
422 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
423 "kevent() reported that client closed "
|
|
|
424 "prematurely connection");
|
|
|
425
|
|
|
426 if (u->peer.connection == NULL) {
|
|
|
427 ngx_http_upstream_finalize_request(r, u,
|
|
|
428 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
429 return;
|
|
|
430 }
|
|
|
431
|
|
|
432 return;
|
|
|
433 }
|
|
|
434
|
|
|
435 #endif
|
|
|
436
|
|
|
437 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
438
|
|
|
439 err = ngx_socket_errno;
|
|
|
440
|
|
|
441 /*
|
|
|
442 * we do not need to disable the write event because
|
|
|
443 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
444 */
|
|
|
445
|
|
|
446 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
447 return;
|
|
|
448 }
|
|
|
449
|
|
|
450 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
451 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
452 ngx_http_upstream_finalize_request(r, u,
|
|
|
453 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
454 return;
|
|
|
455 }
|
|
|
456 }
|
|
|
457
|
|
|
458 if (n > 0) {
|
|
|
459 return;
|
|
|
460 }
|
|
|
461
|
|
|
462 if (n == -1) {
|
|
|
463 if (err == NGX_EAGAIN) {
|
|
|
464 return;
|
|
|
465 }
|
|
|
466
|
|
|
467 ev->error = 1;
|
|
|
468
|
|
483
|
469 } else { /* n == 0 */
|
|
479
|
470 err = 0;
|
|
|
471 }
|
|
|
472
|
|
529
|
473 ev->eof = 1;
|
|
583
|
474 c->error = 1;
|
|
529
|
475
|
|
479
|
476 if (!u->cachable && u->peer.connection) {
|
|
|
477 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
478 "client closed prematurely connection, "
|
|
|
479 "so upstream connection is closed too");
|
|
|
480 ngx_http_upstream_finalize_request(r, u,
|
|
|
481 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
482 return;
|
|
|
483 }
|
|
|
484
|
|
|
485 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
486 "client closed prematurely connection");
|
|
|
487
|
|
|
488 if (u->peer.connection == NULL) {
|
|
|
489 ngx_http_upstream_finalize_request(r, u,
|
|
|
490 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
491 return;
|
|
|
492 }
|
|
|
493 }
|
|
|
494
|
|
|
495
|
|
487
|
496 static void
|
|
|
497 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
479
|
498 {
|
|
591
|
499 ngx_int_t rc;
|
|
|
500 ngx_connection_t *c;
|
|
479
|
501
|
|
483
|
502 r->connection->log->action = "connecting to upstream";
|
|
479
|
503
|
|
|
504 r->connection->single_connection = 0;
|
|
|
505
|
|
|
506 rc = ngx_event_connect_peer(&u->peer);
|
|
|
507
|
|
|
508 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
509 "http upstream connect: %i", rc);
|
|
|
510
|
|
|
511 if (rc == NGX_ERROR) {
|
|
|
512 ngx_http_upstream_finalize_request(r, u,
|
|
|
513 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
514 return;
|
|
|
515 }
|
|
|
516
|
|
591
|
517 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
479
|
518
|
|
543
|
519 if (rc == NGX_BUSY) {
|
|
|
520 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
521 }
|
|
|
522
|
|
|
523 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
479
|
524 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
525 return;
|
|
|
526 }
|
|
|
527
|
|
577
|
528 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
529
|
|
479
|
530 c = u->peer.connection;
|
|
|
531
|
|
|
532 c->data = r;
|
|
591
|
533
|
|
509
|
534 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
535 c->read->handler = ngx_http_upstream_process_header;
|
|
479
|
536
|
|
|
537 c->sendfile = r->connection->sendfile;
|
|
|
538
|
|
|
539 c->pool = r->pool;
|
|
|
540 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
541
|
|
|
542 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
543
|
|
|
544 u->writer.out = NULL;
|
|
|
545 u->writer.last = &u->writer.out;
|
|
|
546 u->writer.connection = c;
|
|
|
547 u->writer.limit = 0;
|
|
|
548
|
|
|
549 if (u->request_sent) {
|
|
509
|
550 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
551 ngx_http_upstream_finalize_request(r, u,
|
|
|
552 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
553 return;
|
|
|
554 }
|
|
479
|
555 }
|
|
|
556
|
|
597
|
557 if (r->request_body && r->request_body->temp_file && r == r->main) {
|
|
573
|
558
|
|
|
559 /*
|
|
|
560 * the r->request_body->buf can be reused for one request only,
|
|
|
561 * the subrequests should allocate their own temporay bufs
|
|
|
562 */
|
|
|
563
|
|
|
564 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
565 if (u->output.free == NULL) {
|
|
|
566 ngx_http_upstream_finalize_request(r, u,
|
|
|
567 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
568 return;
|
|
479
|
569 }
|
|
573
|
570
|
|
|
571 u->output.free->buf = r->request_body->buf;
|
|
|
572 u->output.free->next = NULL;
|
|
|
573 u->output.allocated = 1;
|
|
|
574
|
|
|
575 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
576 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
577 r->request_body->buf->tag = u->output.tag;
|
|
479
|
578 }
|
|
|
579
|
|
|
580 u->request_sent = 0;
|
|
|
581
|
|
|
582 if (rc == NGX_AGAIN) {
|
|
|
583 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
584 return;
|
|
|
585 }
|
|
|
586
|
|
577
|
587 #if (NGX_HTTP_SSL)
|
|
|
588
|
|
591
|
589 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
590 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
577
|
591 return;
|
|
|
592 }
|
|
|
593
|
|
|
594 #endif
|
|
|
595
|
|
479
|
596 ngx_http_upstream_send_request(r, u);
|
|
|
597 }
|
|
|
598
|
|
|
599
|
|
577
|
600 #if (NGX_HTTP_SSL)
|
|
|
601
|
|
|
602 static void
|
|
591
|
603 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
604 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
605 {
|
|
|
606 ngx_int_t rc;
|
|
|
607 ngx_peer_t *peer;
|
|
|
608
|
|
|
609 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
610 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
611 == NGX_ERROR)
|
|
|
612 {
|
|
|
613 ngx_http_upstream_finalize_request(r, u,
|
|
|
614 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
615 return;
|
|
|
616 }
|
|
|
617
|
|
|
618 c->sendfile = 0;
|
|
619
|
619 u->output.sendfile = 0;
|
|
591
|
620
|
|
|
621 peer = &u->peer.peers->peer[u->peer.cur_peer];
|
|
|
622
|
|
|
623 if (ngx_ssl_set_session(c, peer->ssl_session) != NGX_OK) {
|
|
|
624 ngx_http_upstream_finalize_request(r, u,
|
|
|
625 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629 rc = ngx_ssl_handshake(c);
|
|
|
630
|
|
|
631 if (rc == NGX_AGAIN) {
|
|
|
632 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
633 return;
|
|
|
634 }
|
|
|
635
|
|
|
636 ngx_http_upstream_ssl_handshake(c);
|
|
|
637 }
|
|
|
638
|
|
|
639
|
|
|
640 static void
|
|
577
|
641 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
642 {
|
|
|
643 ngx_http_request_t *r;
|
|
|
644 ngx_http_upstream_t *u;
|
|
|
645
|
|
|
646 r = c->data;
|
|
|
647 u = r->upstream;
|
|
|
648
|
|
|
649 if (c->ssl->handshaked) {
|
|
|
650
|
|
|
651 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
652 c->read->handler = ngx_http_upstream_process_header;
|
|
|
653
|
|
|
654 ngx_http_upstream_send_request(r, u);
|
|
|
655
|
|
|
656 return;
|
|
|
657 }
|
|
|
658
|
|
|
659 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
660
|
|
|
661 }
|
|
|
662
|
|
|
663 #endif
|
|
|
664
|
|
|
665
|
|
509
|
666 static ngx_int_t
|
|
487
|
667 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
479
|
668 {
|
|
|
669 ngx_chain_t *cl;
|
|
|
670
|
|
509
|
671 if (u->reinit_request(r) != NGX_OK) {
|
|
|
672 return NGX_ERROR;
|
|
|
673 }
|
|
|
674
|
|
|
675 ngx_memzero(&r->upstream->headers_in,
|
|
|
676 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
677
|
|
|
678 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
591
|
679 sizeof(ngx_table_elt_t))
|
|
|
680 != NGX_OK)
|
|
509
|
681 {
|
|
|
682 return NGX_ERROR;
|
|
479
|
683 }
|
|
|
684
|
|
|
685 /* reinit the request chain */
|
|
577
|
686
|
|
509
|
687 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
479
|
688 cl->buf->pos = cl->buf->start;
|
|
|
689 cl->buf->file_pos = 0;
|
|
|
690 }
|
|
|
691
|
|
509
|
692 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
693
|
|
573
|
694 if (r->request_body && r->request_body->temp_file
|
|
597
|
695 && r != r->main && u->output.buf)
|
|
573
|
696 {
|
|
|
697 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
698 if (u->output.free == NULL) {
|
|
|
699 return NGX_ERROR;
|
|
509
|
700 }
|
|
573
|
701
|
|
|
702 u->output.free->buf = u->output.buf;
|
|
|
703 u->output.free->next = NULL;
|
|
|
704
|
|
|
705 u->output.buf->pos = u->output.buf->start;
|
|
|
706 u->output.buf->last = u->output.buf->start;
|
|
509
|
707 }
|
|
479
|
708
|
|
|
709 u->output.buf = NULL;
|
|
|
710 u->output.in = NULL;
|
|
|
711 u->output.busy = NULL;
|
|
577
|
712
|
|
581
|
713 /* reinit u->buffer */
|
|
577
|
714
|
|
479
|
715 #if 0
|
|
|
716 if (u->cache) {
|
|
581
|
717 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
718 u->buffer.last = u->buffer.pos;
|
|
479
|
719
|
|
|
720 } else {
|
|
581
|
721 u->buffer.pos = u->buffer.start;
|
|
|
722 u->buffer.last = u->buffer.start;
|
|
479
|
723 }
|
|
|
724 #else
|
|
509
|
725
|
|
581
|
726 u->buffer.pos = u->buffer.start;
|
|
|
727 u->buffer.last = u->buffer.start;
|
|
509
|
728
|
|
479
|
729 #endif
|
|
|
730
|
|
|
731 /* add one more state */
|
|
|
732
|
|
501
|
733 u->state = ngx_array_push(&u->states);
|
|
|
734 if (u->state == NULL) {
|
|
509
|
735 return NGX_ERROR;
|
|
479
|
736 }
|
|
|
737
|
|
|
738 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
509
|
739
|
|
|
740 return NGX_OK;
|
|
479
|
741 }
|
|
|
742
|
|
|
743
|
|
487
|
744 static void
|
|
|
745 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
479
|
746 {
|
|
483
|
747 int rc;
|
|
|
748 ngx_connection_t *c;
|
|
577
|
749
|
|
479
|
750 c = u->peer.connection;
|
|
|
751
|
|
|
752 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
753 "http upstream send request");
|
|
|
754
|
|
|
755 #if (NGX_HAVE_KQUEUE)
|
|
|
756
|
|
|
757 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
758 && !u->request_sent
|
|
|
759 && c->write->pending_eof)
|
|
|
760 {
|
|
537
|
761 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
762 "kevent() reported that connect() failed");
|
|
479
|
763 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
764 return;
|
|
|
765 }
|
|
|
766
|
|
|
767 #endif
|
|
|
768
|
|
483
|
769 c->log->action = "sending request to upstream";
|
|
479
|
770
|
|
509
|
771 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
479
|
772
|
|
|
773 u->request_sent = 1;
|
|
|
774
|
|
|
775 if (rc == NGX_ERROR) {
|
|
|
776 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
777 return;
|
|
|
778 }
|
|
|
779
|
|
|
780 if (c->write->timer_set) {
|
|
|
781 ngx_del_timer(c->write);
|
|
|
782 }
|
|
|
783
|
|
|
784 if (rc == NGX_AGAIN) {
|
|
|
785 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
786
|
|
|
787 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
788 {
|
|
|
789 ngx_http_upstream_finalize_request(r, u,
|
|
|
790 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
791 return;
|
|
|
792 }
|
|
|
793
|
|
|
794 return;
|
|
|
795 }
|
|
|
796
|
|
|
797 /* rc == NGX_OK */
|
|
|
798
|
|
|
799 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
800 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
801 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
802 ngx_tcp_push_n " failed");
|
|
|
803 ngx_http_upstream_finalize_request(r, u,
|
|
|
804 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
577
|
805 return;
|
|
479
|
806 }
|
|
|
807
|
|
|
808 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
809 }
|
|
577
|
810
|
|
479
|
811 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
812
|
|
|
813 #if 1
|
|
|
814 if (c->read->ready) {
|
|
577
|
815
|
|
479
|
816 /* post aio operation */
|
|
|
817
|
|
|
818 /*
|
|
|
819 * TODO comment
|
|
|
820 * although we can post aio operation just in the end
|
|
|
821 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
822 * it's better to do here because we postpone header buffer allocation
|
|
|
823 */
|
|
|
824
|
|
|
825 ngx_http_upstream_process_header(c->read);
|
|
|
826 return;
|
|
|
827 }
|
|
|
828 #endif
|
|
|
829
|
|
509
|
830 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
479
|
831
|
|
509
|
832 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
479
|
833 ngx_http_upstream_finalize_request(r, u,
|
|
|
834 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
835 return;
|
|
|
836 }
|
|
|
837 }
|
|
|
838
|
|
|
839
|
|
487
|
840 static void
|
|
|
841 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
479
|
842 {
|
|
|
843 ngx_connection_t *c;
|
|
|
844 ngx_http_request_t *r;
|
|
|
845 ngx_http_upstream_t *u;
|
|
|
846
|
|
|
847 c = wev->data;
|
|
|
848 r = c->data;
|
|
|
849 u = r->upstream;
|
|
|
850
|
|
|
851 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
852 "http upstream send request handler");
|
|
|
853
|
|
|
854 if (wev->timedout) {
|
|
483
|
855 c->log->action = "sending request to upstream";
|
|
479
|
856 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
857 return;
|
|
|
858 }
|
|
|
859
|
|
591
|
860 #if (NGX_HTTP_SSL)
|
|
|
861
|
|
|
862 if (u->conf->ssl && c->ssl == NULL) {
|
|
|
863 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
864 return;
|
|
|
865 }
|
|
|
866
|
|
|
867 #endif
|
|
|
868
|
|
479
|
869 ngx_http_upstream_send_request(r, u);
|
|
|
870 }
|
|
|
871
|
|
|
872
|
|
487
|
873 static void
|
|
|
874 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
479
|
875 {
|
|
515
|
876 ssize_t n;
|
|
|
877 ngx_int_t rc;
|
|
573
|
878 ngx_str_t *uri, args;
|
|
|
879 ngx_uint_t i, key, flags;
|
|
515
|
880 ngx_list_part_t *part;
|
|
|
881 ngx_table_elt_t *h;
|
|
|
882 ngx_connection_t *c;
|
|
|
883 ngx_http_request_t *r;
|
|
|
884 ngx_http_upstream_t *u;
|
|
|
885 ngx_http_err_page_t *err_page;
|
|
|
886 ngx_http_core_loc_conf_t *clcf;
|
|
|
887 ngx_http_upstream_header_t *hh;
|
|
|
888 ngx_http_upstream_main_conf_t *umcf;
|
|
479
|
889
|
|
|
890 c = rev->data;
|
|
|
891 r = c->data;
|
|
|
892 u = r->upstream;
|
|
|
893
|
|
|
894 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
483
|
895 "http upstream process header");
|
|
479
|
896
|
|
483
|
897 c->log->action = "reading response header from upstream";
|
|
479
|
898
|
|
|
899 if (rev->timedout) {
|
|
|
900 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
901 return;
|
|
|
902 }
|
|
577
|
903
|
|
581
|
904 if (u->buffer.start == NULL) {
|
|
|
905 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
906 if (u->buffer.start == NULL) {
|
|
479
|
907 ngx_http_upstream_finalize_request(r, u,
|
|
|
908 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
909 return;
|
|
|
910 }
|
|
|
911
|
|
581
|
912 u->buffer.pos = u->buffer.start;
|
|
|
913 u->buffer.last = u->buffer.start;
|
|
|
914 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
915 u->buffer.temporary = 1;
|
|
|
916
|
|
|
917 u->buffer.tag = u->output.tag;
|
|
479
|
918
|
|
509
|
919 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
581
|
920 sizeof(ngx_table_elt_t))
|
|
|
921 != NGX_OK)
|
|
509
|
922 {
|
|
|
923 ngx_http_upstream_finalize_request(r, u,
|
|
|
924 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
925 return;
|
|
|
926 }
|
|
|
927
|
|
479
|
928 #if 0
|
|
|
929 if (u->cache) {
|
|
581
|
930 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
931 u->buffer.last = u->buffer.pos;
|
|
479
|
932 }
|
|
|
933 #endif
|
|
|
934 }
|
|
|
935
|
|
581
|
936 n = u->peer.connection->recv(u->peer.connection, u->buffer.last,
|
|
|
937 u->buffer.end - u->buffer.last);
|
|
479
|
938
|
|
|
939 if (n == NGX_AGAIN) {
|
|
|
940 #if 0
|
|
|
941 ngx_add_timer(rev, u->read_timeout);
|
|
|
942 #endif
|
|
|
943
|
|
|
944 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
945 ngx_http_upstream_finalize_request(r, u,
|
|
|
946 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
947 return;
|
|
|
948 }
|
|
|
949
|
|
|
950 return;
|
|
|
951 }
|
|
|
952
|
|
|
953 if (n == 0) {
|
|
|
954 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
955 "upstream prematurely closed connection");
|
|
|
956 }
|
|
|
957
|
|
|
958 if (n == NGX_ERROR || n == 0) {
|
|
|
959 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
960 return;
|
|
|
961 }
|
|
|
962
|
|
581
|
963 u->buffer.last += n;
|
|
479
|
964
|
|
|
965 #if 0
|
|
|
966 u->valid_header_in = 0;
|
|
|
967
|
|
|
968 u->peer.cached = 0;
|
|
|
969 #endif
|
|
|
970
|
|
|
971 rc = u->process_header(r);
|
|
|
972
|
|
|
973 if (rc == NGX_AGAIN) {
|
|
|
974 #if 0
|
|
|
975 ngx_add_timer(rev, u->read_timeout);
|
|
|
976 #endif
|
|
|
977
|
|
581
|
978 if (u->buffer.pos == u->buffer.end) {
|
|
479
|
979 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
980 "upstream sent too big header");
|
|
|
981
|
|
|
982 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
983 return;
|
|
|
984 }
|
|
|
985
|
|
|
986 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
987 ngx_http_upstream_finalize_request(r, u,
|
|
|
988 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
989 return;
|
|
|
990 }
|
|
|
991
|
|
|
992 return;
|
|
|
993 }
|
|
|
994
|
|
|
995 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
996 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
997 return;
|
|
|
998 }
|
|
|
999
|
|
|
1000 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1001 ngx_http_upstream_finalize_request(r, u,
|
|
|
1002 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1003 return;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 /* rc == NGX_OK */
|
|
|
1007
|
|
529
|
1008 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
509
|
1009
|
|
|
1010 if (u->peer.tries > 1
|
|
|
1011 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1012 {
|
|
|
1013 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1014 return;
|
|
|
1015 }
|
|
|
1016
|
|
|
1017 #if (NGX_HTTP_CACHE)
|
|
|
1018
|
|
|
1019 if (u->peer.tries == 0
|
|
|
1020 && u->stale
|
|
|
1021 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1022 {
|
|
|
1023 ngx_http_upstream_finalize_request(r, u,
|
|
529
|
1024 ngx_http_send_cached_response(r));
|
|
509
|
1025 return;
|
|
|
1026 }
|
|
|
1027
|
|
|
1028 #endif
|
|
|
1029 }
|
|
|
1030
|
|
597
|
1031 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1032
|
|
|
1033 if (u->peer.tries > 1
|
|
|
1034 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1035 {
|
|
|
1036 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1037 return;
|
|
|
1038 }
|
|
|
1039
|
|
|
1040 if (u->conf->redirect_404) {
|
|
|
1041 rc = (r->err_ctx == NULL) ? 404 : 204;
|
|
|
1042 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
1043 return;
|
|
|
1044 }
|
|
509
|
1045 }
|
|
|
1046
|
|
|
1047
|
|
529
|
1048 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
487
|
1049 && u->conf->redirect_errors
|
|
|
1050 && r->err_ctx == NULL)
|
|
|
1051 {
|
|
|
1052 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1053
|
|
|
1054 if (clcf->error_pages) {
|
|
|
1055
|
|
|
1056 err_page = clcf->error_pages->elts;
|
|
|
1057 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
529
|
1058 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1059
|
|
|
1060 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1061
|
|
|
1062 r->headers_out.www_authenticate =
|
|
|
1063 ngx_list_push(&r->headers_out.headers);
|
|
|
1064
|
|
|
1065 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1066 ngx_http_upstream_finalize_request(r, u,
|
|
|
1067 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1068 return;
|
|
|
1069 }
|
|
|
1070
|
|
577
|
1071 *r->headers_out.www_authenticate =
|
|
529
|
1072 *u->headers_in.www_authenticate;
|
|
|
1073 }
|
|
|
1074
|
|
487
|
1075 ngx_http_upstream_finalize_request(r, u,
|
|
529
|
1076 u->headers_in.status_n);
|
|
487
|
1077 return;
|
|
|
1078 }
|
|
|
1079 }
|
|
|
1080 }
|
|
|
1081 }
|
|
|
1082
|
|
515
|
1083 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
1084 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1085
|
|
|
1086 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1087 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1088
|
|
|
1089 part = &r->upstream->headers_in.headers.part;
|
|
|
1090 h = part->elts;
|
|
|
1091
|
|
|
1092 for (i = 0; /* void */; i++) {
|
|
|
1093
|
|
|
1094 if (i >= part->nelts) {
|
|
|
1095 if (part->next == NULL) {
|
|
|
1096 break;
|
|
|
1097 }
|
|
577
|
1098
|
|
515
|
1099 part = part->next;
|
|
|
1100 h = part->elts;
|
|
|
1101 i = 0;
|
|
|
1102 }
|
|
|
1103
|
|
|
1104 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1105
|
|
|
1106 if (hh[key].redirect
|
|
|
1107 && hh[key].name.len == h[i].key.len
|
|
|
1108 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1109 {
|
|
|
1110 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1111 ngx_http_upstream_finalize_request(r, u,
|
|
|
1112 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1113 return;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 }
|
|
|
1117 }
|
|
|
1118
|
|
573
|
1119 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1120 args.len = 0;
|
|
|
1121 args.data = NULL;
|
|
|
1122 flags = 0;
|
|
|
1123
|
|
|
1124 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1125 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1126 return;
|
|
|
1127 }
|
|
|
1128
|
|
|
1129 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1130 r->zero_in_uri = 1;
|
|
|
1131 }
|
|
|
1132
|
|
|
1133 ngx_http_internal_redirect(r, uri, &args);
|
|
515
|
1134 return;
|
|
|
1135 }
|
|
|
1136
|
|
479
|
1137 ngx_http_upstream_send_response(r, u);
|
|
|
1138 }
|
|
|
1139
|
|
|
1140
|
|
487
|
1141 static void
|
|
|
1142 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
479
|
1143 {
|
|
583
|
1144 int tcp_nodelay;
|
|
581
|
1145 ssize_t size;
|
|
509
|
1146 ngx_int_t rc;
|
|
|
1147 ngx_uint_t i, key;
|
|
|
1148 ngx_list_part_t *part;
|
|
|
1149 ngx_table_elt_t *h;
|
|
|
1150 ngx_event_pipe_t *p;
|
|
583
|
1151 ngx_connection_t *c;
|
|
563
|
1152 ngx_pool_cleanup_t *cl;
|
|
|
1153 ngx_pool_cleanup_file_t *clf;
|
|
509
|
1154 ngx_http_core_loc_conf_t *clcf;
|
|
|
1155 ngx_http_upstream_header_t *hh;
|
|
|
1156 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1157
|
|
|
1158 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1159 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1160
|
|
|
1161 part = &r->upstream->headers_in.headers.part;
|
|
|
1162 h = part->elts;
|
|
|
1163
|
|
|
1164 for (i = 0; /* void */; i++) {
|
|
479
|
1165
|
|
509
|
1166 if (i >= part->nelts) {
|
|
|
1167 if (part->next == NULL) {
|
|
|
1168 break;
|
|
|
1169 }
|
|
577
|
1170
|
|
509
|
1171 part = part->next;
|
|
|
1172 h = part->elts;
|
|
|
1173 i = 0;
|
|
|
1174 }
|
|
|
1175
|
|
|
1176 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1177
|
|
|
1178 if (hh[key].name.len == h[i].key.len
|
|
|
1179 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1180 {
|
|
|
1181 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1182 ngx_http_upstream_finalize_request(r, u,
|
|
|
1183 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1184 return;
|
|
|
1185 }
|
|
|
1186
|
|
|
1187 continue;
|
|
|
1188 }
|
|
|
1189
|
|
|
1190 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1191 ngx_http_upstream_finalize_request(r, u,
|
|
|
1192 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1193 return;
|
|
|
1194 }
|
|
|
1195 }
|
|
|
1196
|
|
529
|
1197 r->headers_out.status = u->headers_in.status_n;
|
|
|
1198 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1199
|
|
581
|
1200 if (r->headers_out.content_length_n != -1) {
|
|
|
1201 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1202
|
|
|
1203 } else {
|
|
|
1204 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1205 }
|
|
|
1206
|
|
509
|
1207 rc = ngx_http_send_header(r);
|
|
479
|
1208
|
|
629
|
1209 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
485
|
1210 ngx_http_upstream_finalize_request(r, u, rc);
|
|
479
|
1211 return;
|
|
|
1212 }
|
|
|
1213
|
|
|
1214 u->header_sent = 1;
|
|
|
1215
|
|
573
|
1216 if (r->request_body && r->request_body->temp_file) {
|
|
563
|
1217 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1218 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1219 clf = cl->data;
|
|
|
1220
|
|
|
1221 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1222 cl->handler(clf);
|
|
|
1223 cl->handler = NULL;
|
|
|
1224 break;
|
|
|
1225 }
|
|
|
1226 }
|
|
|
1227 }
|
|
|
1228 }
|
|
|
1229
|
|
583
|
1230 c = r->connection;
|
|
|
1231
|
|
581
|
1232 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1233
|
|
|
1234 if (u->pipe == NULL) {
|
|
|
1235
|
|
|
1236 if (u->input_filter == NULL) {
|
|
|
1237 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1238 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1239 u->input_filter_ctx = r;
|
|
|
1240 }
|
|
|
1241
|
|
|
1242 u->peer.connection->read->handler =
|
|
|
1243 ngx_http_upstream_process_non_buffered_body;
|
|
|
1244 r->write_event_handler =
|
|
|
1245 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1246
|
|
|
1247 r->limit_rate = 0;
|
|
|
1248
|
|
|
1249 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1250 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1251 return;
|
|
|
1252 }
|
|
|
1253
|
|
583
|
1254 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1255 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1256
|
|
|
1257 tcp_nodelay = 1;
|
|
|
1258
|
|
|
1259 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1260 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1261 {
|
|
|
1262 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1263 "setsockopt(TCP_NODELAY) failed");
|
|
|
1264 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1265 return;
|
|
|
1266 }
|
|
|
1267
|
|
|
1268 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1269 }
|
|
|
1270
|
|
581
|
1271 size = u->buffer.last - u->buffer.pos;
|
|
|
1272
|
|
|
1273 if (size) {
|
|
|
1274 u->buffer.last = u->buffer.pos;
|
|
|
1275
|
|
|
1276 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1277 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1278 return;
|
|
|
1279 }
|
|
|
1280
|
|
583
|
1281 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
581
|
1282
|
|
|
1283 } else {
|
|
|
1284 u->buffer.pos = u->buffer.start;
|
|
|
1285 u->buffer.last = u->buffer.start;
|
|
|
1286
|
|
|
1287 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1288 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1289 return;
|
|
|
1290 }
|
|
|
1291 }
|
|
|
1292
|
|
|
1293 return;
|
|
|
1294 }
|
|
|
1295
|
|
479
|
1296 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1297
|
|
|
1298 #if 0
|
|
|
1299
|
|
|
1300 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1301 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
583
|
1302 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
479
|
1303 ngx_close_file_n " \"%s\" failed",
|
|
|
1304 u->cache->ctx.file.name.data);
|
|
|
1305 }
|
|
|
1306 }
|
|
|
1307
|
|
|
1308 if (u->cachable) {
|
|
581
|
1309 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
479
|
1310
|
|
|
1311 header->expires = u->cache->ctx.expires;
|
|
|
1312 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1313 header->date = u->cache->ctx.date;
|
|
|
1314 header->length = r->headers_out.content_length_n;
|
|
|
1315 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1316
|
|
|
1317 header->key_len = u->cache->ctx.key0.len;
|
|
|
1318 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1319 header->key[header->key_len] = LF;
|
|
|
1320 }
|
|
|
1321
|
|
|
1322 #endif
|
|
|
1323
|
|
581
|
1324 p = u->pipe;
|
|
479
|
1325
|
|
|
1326 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1327 p->output_ctx = r;
|
|
|
1328 p->tag = u->output.tag;
|
|
577
|
1329 p->bufs = u->conf->bufs;
|
|
479
|
1330 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1331 p->upstream = u->peer.connection;
|
|
583
|
1332 p->downstream = c;
|
|
479
|
1333 p->pool = r->pool;
|
|
583
|
1334 p->log = c->log;
|
|
577
|
1335
|
|
479
|
1336 p->cachable = u->cachable;
|
|
|
1337
|
|
501
|
1338 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1339 if (p->temp_file == NULL) {
|
|
479
|
1340 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1341 return;
|
|
|
1342 }
|
|
|
1343
|
|
|
1344 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
583
|
1345 p->temp_file->file.log = c->log;
|
|
479
|
1346 p->temp_file->path = u->conf->temp_path;
|
|
|
1347 p->temp_file->pool = r->pool;
|
|
577
|
1348
|
|
479
|
1349 if (u->cachable) {
|
|
|
1350 p->temp_file->persistent = 1;
|
|
|
1351 } else {
|
|
|
1352 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1353 "to a temporary file";
|
|
|
1354 }
|
|
|
1355
|
|
|
1356 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1357 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1358
|
|
501
|
1359 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1360 if (p->preread_bufs == NULL) {
|
|
479
|
1361 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1362 return;
|
|
|
1363 }
|
|
581
|
1364 p->preread_bufs->buf = &u->buffer;
|
|
479
|
1365 p->preread_bufs->next = NULL;
|
|
581
|
1366 u->buffer.recycled = 1;
|
|
|
1367
|
|
|
1368 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
479
|
1369
|
|
|
1370 if (u->cachable) {
|
|
|
1371 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1372 if (p->buf_to_file == NULL) {
|
|
|
1373 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1374 return;
|
|
|
1375 }
|
|
581
|
1376 p->buf_to_file->pos = u->buffer.start;
|
|
|
1377 p->buf_to_file->last = u->buffer.pos;
|
|
479
|
1378 p->buf_to_file->temporary = 1;
|
|
|
1379 }
|
|
|
1380
|
|
|
1381 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1382 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1383 p->single_buf = 1;
|
|
|
1384 }
|
|
|
1385
|
|
|
1386 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1387 p->free_bufs = 1;
|
|
|
1388
|
|
|
1389 /*
|
|
581
|
1390 * event_pipe would do u->buffer.last += p->preread_size
|
|
479
|
1391 * as though these bytes were read
|
|
|
1392 */
|
|
581
|
1393 u->buffer.last = u->buffer.pos;
|
|
479
|
1394
|
|
|
1395 if (u->conf->cyclic_temp_file) {
|
|
|
1396
|
|
|
1397 /*
|
|
|
1398 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1399 * because the writing a new data may interfere with sendfile()
|
|
|
1400 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1401 */
|
|
|
1402
|
|
|
1403 p->cyclic_temp_file = 1;
|
|
583
|
1404 c->sendfile = 0;
|
|
479
|
1405
|
|
|
1406 } else {
|
|
|
1407 p->cyclic_temp_file = 0;
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 p->read_timeout = u->conf->read_timeout;
|
|
|
1411 p->send_timeout = clcf->send_timeout;
|
|
|
1412 p->send_lowat = clcf->send_lowat;
|
|
|
1413
|
|
509
|
1414 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1415 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
479
|
1416
|
|
|
1417 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1418 }
|
|
|
1419
|
|
|
1420
|
|
487
|
1421 static void
|
|
581
|
1422 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1423 {
|
|
|
1424 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1425 }
|
|
|
1426
|
|
|
1427
|
|
|
1428 static void
|
|
|
1429 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1430 {
|
|
|
1431 size_t size;
|
|
|
1432 ssize_t n;
|
|
|
1433 ngx_buf_t *b;
|
|
583
|
1434 ngx_int_t rc;
|
|
581
|
1435 ngx_uint_t do_write;
|
|
583
|
1436 ngx_connection_t *c, *client;
|
|
581
|
1437 ngx_http_request_t *r;
|
|
|
1438 ngx_http_upstream_t *u;
|
|
|
1439 ngx_http_core_loc_conf_t *clcf;
|
|
|
1440
|
|
|
1441 c = ev->data;
|
|
|
1442
|
|
|
1443 if (ev->write) {
|
|
|
1444 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1445 "http upstream process non buffered downstream");
|
|
|
1446 c->log->action = "sending to client";
|
|
|
1447
|
|
|
1448 } else {
|
|
|
1449 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1450 "http upstream process non buffered upstream");
|
|
|
1451 c->log->action = "reading upstream";
|
|
|
1452 }
|
|
|
1453
|
|
|
1454 if (ev->timedout) {
|
|
|
1455 if (ev->write) {
|
|
|
1456 c->timedout = 1;
|
|
611
|
1457 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1458
|
|
581
|
1459 } else {
|
|
611
|
1460 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
581
|
1461 }
|
|
|
1462 }
|
|
|
1463
|
|
|
1464 r = c->data;
|
|
|
1465 u = r->upstream;
|
|
583
|
1466 client = r->connection;
|
|
581
|
1467
|
|
|
1468 b = &u->buffer;
|
|
|
1469
|
|
|
1470 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1471
|
|
|
1472 do_write = ev->write;
|
|
|
1473
|
|
|
1474 for ( ;; ) {
|
|
|
1475
|
|
|
1476 if (do_write) {
|
|
|
1477
|
|
|
1478 if (u->out_bufs || u->busy_bufs) {
|
|
583
|
1479 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1480
|
|
|
1481 if (client->destroyed) {
|
|
|
1482 return;
|
|
|
1483 }
|
|
|
1484
|
|
|
1485 if (rc == NGX_ERROR) {
|
|
581
|
1486 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1487 return;
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1491 &u->out_bufs, u->output.tag);
|
|
|
1492 }
|
|
|
1493
|
|
|
1494 if (u->busy_bufs == NULL) {
|
|
|
1495
|
|
|
1496 if (u->length == 0
|
|
|
1497 || u->peer.connection->read->eof
|
|
|
1498 || u->peer.connection->read->error)
|
|
|
1499 {
|
|
|
1500 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1501 return;
|
|
|
1502 }
|
|
|
1503
|
|
|
1504 b->pos = b->start;
|
|
|
1505 b->last = b->start;
|
|
|
1506 }
|
|
|
1507 }
|
|
|
1508
|
|
|
1509 size = b->end - b->last;
|
|
|
1510
|
|
|
1511 if (size > u->length) {
|
|
|
1512 size = u->length;
|
|
|
1513 }
|
|
|
1514
|
|
|
1515 if (size && u->peer.connection->read->ready) {
|
|
|
1516 n = u->peer.connection->recv(u->peer.connection, b->last, size);
|
|
|
1517
|
|
|
1518 if (n == NGX_AGAIN) {
|
|
|
1519 break;
|
|
|
1520 }
|
|
|
1521
|
|
|
1522 if (n > 0) {
|
|
|
1523 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1524 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1525 return;
|
|
|
1526 }
|
|
|
1527 }
|
|
|
1528
|
|
|
1529 do_write = 1;
|
|
|
1530
|
|
|
1531 continue;
|
|
|
1532 }
|
|
|
1533
|
|
|
1534 break;
|
|
|
1535 }
|
|
|
1536
|
|
583
|
1537 if (client->data == r) {
|
|
|
1538 if (ngx_handle_write_event(client->write, clcf->send_lowat)
|
|
|
1539 == NGX_ERROR)
|
|
|
1540 {
|
|
|
1541 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1542 return;
|
|
|
1543 }
|
|
581
|
1544 }
|
|
|
1545
|
|
583
|
1546 if (client->write->active) {
|
|
|
1547 ngx_add_timer(client->write, clcf->send_timeout);
|
|
|
1548
|
|
|
1549 } else if (client->write->timer_set) {
|
|
|
1550 ngx_del_timer(client->write);
|
|
581
|
1551 }
|
|
|
1552
|
|
|
1553 if (ngx_handle_read_event(u->peer.connection->read, 0) == NGX_ERROR) {
|
|
|
1554 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1555 return;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 if (u->peer.connection->read->active) {
|
|
|
1559 ngx_add_timer(u->peer.connection->read, u->conf->read_timeout);
|
|
|
1560
|
|
583
|
1561 } else if (u->peer.connection->read->timer_set) {
|
|
|
1562 ngx_del_timer(u->peer.connection->read);
|
|
581
|
1563 }
|
|
|
1564 }
|
|
|
1565
|
|
|
1566
|
|
|
1567 static ngx_int_t
|
|
|
1568 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1569 {
|
|
|
1570 return NGX_OK;
|
|
|
1571 }
|
|
|
1572
|
|
|
1573
|
|
|
1574 static ngx_int_t
|
|
|
1575 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1576 {
|
|
|
1577 ngx_http_request_t *r = data;
|
|
|
1578
|
|
|
1579 ngx_buf_t *b;
|
|
|
1580 ngx_chain_t *cl, **ll;
|
|
|
1581 ngx_http_upstream_t *u;
|
|
|
1582
|
|
|
1583 u = r->upstream;
|
|
|
1584
|
|
|
1585 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1586 ll = &cl->next;
|
|
|
1587 }
|
|
|
1588
|
|
|
1589 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1590 if (cl == NULL) {
|
|
|
1591 return NGX_ERROR;
|
|
|
1592 }
|
|
|
1593
|
|
|
1594 *ll = cl;
|
|
|
1595
|
|
|
1596 cl->buf->flush = 1;
|
|
|
1597 cl->buf->memory = 1;
|
|
|
1598
|
|
|
1599 b = &u->buffer;
|
|
|
1600
|
|
|
1601 cl->buf->pos = b->last;
|
|
|
1602 b->last += bytes;
|
|
|
1603 cl->buf->last = b->last;
|
|
|
1604
|
|
|
1605 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1606 return NGX_OK;
|
|
|
1607 }
|
|
|
1608
|
|
|
1609 u->length -= bytes;
|
|
|
1610
|
|
|
1611 return NGX_OK;
|
|
|
1612 }
|
|
|
1613
|
|
|
1614
|
|
|
1615 static void
|
|
509
|
1616 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1617 {
|
|
|
1618 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1619 }
|
|
|
1620
|
|
|
1621
|
|
|
1622 static void
|
|
487
|
1623 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
479
|
1624 {
|
|
509
|
1625 ngx_event_pipe_t *p;
|
|
583
|
1626 ngx_connection_t *c, *downstream;
|
|
479
|
1627 ngx_http_request_t *r;
|
|
|
1628 ngx_http_upstream_t *u;
|
|
|
1629
|
|
|
1630 c = ev->data;
|
|
|
1631 r = c->data;
|
|
|
1632 u = r->upstream;
|
|
583
|
1633 downstream = r->connection;
|
|
479
|
1634
|
|
|
1635 if (ev->write) {
|
|
483
|
1636 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1637 "http upstream process downstream");
|
|
|
1638 c->log->action = "sending to client";
|
|
577
|
1639
|
|
479
|
1640 } else {
|
|
483
|
1641 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1642 "http upstream process upstream");
|
|
|
1643 c->log->action = "reading upstream";
|
|
479
|
1644 }
|
|
577
|
1645
|
|
581
|
1646 p = u->pipe;
|
|
479
|
1647
|
|
|
1648 if (ev->timedout) {
|
|
|
1649 if (ev->write) {
|
|
527
|
1650 if (ev->delayed) {
|
|
|
1651
|
|
|
1652 ev->timedout = 0;
|
|
|
1653 ev->delayed = 0;
|
|
|
1654
|
|
|
1655 if (!ev->ready) {
|
|
|
1656 ngx_add_timer(ev, p->send_timeout);
|
|
|
1657
|
|
|
1658 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1659 {
|
|
|
1660 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1661 return;
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 return;
|
|
|
1665 }
|
|
|
1666
|
|
|
1667 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
583
|
1668
|
|
|
1669 if (downstream->destroyed) {
|
|
|
1670 return;
|
|
|
1671 }
|
|
|
1672
|
|
527
|
1673 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1674 return;
|
|
|
1675 }
|
|
|
1676
|
|
|
1677 } else {
|
|
|
1678 p->downstream_error = 1;
|
|
577
|
1679 c->timedout = 1;
|
|
611
|
1680 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
527
|
1681 }
|
|
479
|
1682
|
|
|
1683 } else {
|
|
577
|
1684 p->upstream_error = 1;
|
|
611
|
1685 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
479
|
1686 }
|
|
|
1687
|
|
|
1688 } else {
|
|
527
|
1689 if (ev->write && ev->delayed) {
|
|
|
1690 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1691 "http downstream delayed");
|
|
|
1692
|
|
|
1693 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1694 return;
|
|
|
1695 }
|
|
|
1696
|
|
|
1697 return;
|
|
|
1698 }
|
|
|
1699
|
|
479
|
1700 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
583
|
1701
|
|
|
1702 if (downstream->destroyed) {
|
|
|
1703 return;
|
|
|
1704 }
|
|
|
1705
|
|
479
|
1706 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1707 return;
|
|
|
1708 }
|
|
|
1709 }
|
|
577
|
1710
|
|
479
|
1711 if (u->peer.connection) {
|
|
|
1712
|
|
|
1713 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1714
|
|
|
1715 if (p->upstream_done && u->cachable) {
|
|
|
1716 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1717 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1718 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1719 return;
|
|
|
1720 }
|
|
|
1721
|
|
|
1722 } else if (p->upstream_eof && u->cachable) {
|
|
|
1723
|
|
|
1724 /* TODO: check length & update cache */
|
|
|
1725
|
|
|
1726 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1727 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1728 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1729 return;
|
|
|
1730 }
|
|
|
1731 }
|
|
|
1732
|
|
|
1733 #endif
|
|
|
1734
|
|
|
1735 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
483
|
1736 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1737 "http upstream exit: %p", p->out);
|
|
479
|
1738 #if 0
|
|
|
1739 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1740 #endif
|
|
|
1741 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1742 return;
|
|
|
1743 }
|
|
|
1744 }
|
|
|
1745
|
|
|
1746 if (p->downstream_error) {
|
|
483
|
1747 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1748 "http upstream downstream error");
|
|
479
|
1749
|
|
|
1750 if (!u->cachable && u->peer.connection) {
|
|
|
1751 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1752 }
|
|
|
1753 }
|
|
|
1754 }
|
|
|
1755
|
|
|
1756
|
|
487
|
1757 static void
|
|
|
1758 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
479
|
1759 {
|
|
|
1760 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1761 "http upstream dummy handler");
|
|
|
1762 }
|
|
|
1763
|
|
|
1764
|
|
487
|
1765 static void
|
|
|
1766 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1767 ngx_uint_t ft_type)
|
|
479
|
1768 {
|
|
525
|
1769 ngx_uint_t status, down;
|
|
479
|
1770
|
|
|
1771 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1772 "http next upstream, %xD", ft_type);
|
|
|
1773
|
|
|
1774 #if 0
|
|
|
1775 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1776 #endif
|
|
|
1777
|
|
525
|
1778 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1779 down = 0;
|
|
|
1780 } else {
|
|
|
1781 down = 1;
|
|
479
|
1782 }
|
|
525
|
1783
|
|
|
1784 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1785
|
|
479
|
1786 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1787 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1788 "upstream timed out");
|
|
|
1789 }
|
|
577
|
1790
|
|
479
|
1791 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1792 status = 0;
|
|
|
1793
|
|
|
1794 } else {
|
|
|
1795 switch(ft_type) {
|
|
|
1796
|
|
|
1797 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1798 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1799 break;
|
|
|
1800
|
|
|
1801 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1802 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1803 break;
|
|
|
1804
|
|
|
1805 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1806 status = NGX_HTTP_NOT_FOUND;
|
|
|
1807 break;
|
|
|
1808
|
|
|
1809 /*
|
|
|
1810 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1811 * never reach here
|
|
|
1812 */
|
|
|
1813
|
|
|
1814 default:
|
|
|
1815 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1816 }
|
|
|
1817 }
|
|
|
1818
|
|
583
|
1819 if (r->connection->error) {
|
|
479
|
1820 ngx_http_upstream_finalize_request(r, u,
|
|
|
1821 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1822 return;
|
|
|
1823 }
|
|
|
1824
|
|
|
1825 if (status) {
|
|
|
1826 u->state->status = status;
|
|
|
1827
|
|
525
|
1828 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
479
|
1829
|
|
|
1830 #if (NGX_HTTP_CACHE)
|
|
|
1831
|
|
|
1832 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1833 ngx_http_upstream_finalize_request(r, u,
|
|
525
|
1834 ngx_http_send_cached_response(r));
|
|
479
|
1835 return;
|
|
|
1836 }
|
|
|
1837
|
|
|
1838 #endif
|
|
|
1839
|
|
|
1840 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1841 return;
|
|
|
1842 }
|
|
|
1843 }
|
|
|
1844
|
|
|
1845 if (u->peer.connection) {
|
|
|
1846 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1847 "close http upstream connection: %d",
|
|
|
1848 u->peer.connection->fd);
|
|
577
|
1849 #if (NGX_HTTP_SSL)
|
|
|
1850 if (u->peer.connection->ssl) {
|
|
|
1851 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1852 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1853 }
|
|
|
1854 #endif
|
|
479
|
1855 ngx_close_connection(u->peer.connection);
|
|
|
1856 }
|
|
|
1857
|
|
|
1858 #if 0
|
|
|
1859 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1860 ngx_http_upstream_busy_lock(p);
|
|
|
1861 return;
|
|
|
1862 }
|
|
|
1863 #endif
|
|
|
1864
|
|
|
1865 ngx_http_upstream_connect(r, u);
|
|
|
1866 }
|
|
|
1867
|
|
|
1868
|
|
487
|
1869 static void
|
|
569
|
1870 ngx_http_upstream_cleanup(void *data)
|
|
|
1871 {
|
|
|
1872 ngx_http_request_t *r = data;
|
|
|
1873
|
|
|
1874 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1875 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1876
|
|
|
1877 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1878 }
|
|
|
1879
|
|
|
1880
|
|
|
1881 static void
|
|
487
|
1882 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1883 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
479
|
1884 {
|
|
563
|
1885 ngx_time_t *tp;
|
|
|
1886
|
|
483
|
1887 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1888 "finalize http upstream request: %i", rc);
|
|
479
|
1889
|
|
569
|
1890 *u->cleanup = NULL;
|
|
|
1891
|
|
563
|
1892 if (u->state->response_time) {
|
|
|
1893 tp = ngx_timeofday();
|
|
|
1894 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1895 - u->state->response_time;
|
|
|
1896 }
|
|
|
1897
|
|
479
|
1898 u->finalize_request(r, rc);
|
|
|
1899
|
|
|
1900 if (u->peer.connection) {
|
|
|
1901 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1902 "close http upstream connection: %d",
|
|
|
1903 u->peer.connection->fd);
|
|
577
|
1904 #if (NGX_HTTP_SSL)
|
|
|
1905
|
|
|
1906 /* TODO: do not shutdown persistent connection */
|
|
|
1907
|
|
|
1908 if (u->peer.connection->ssl) {
|
|
|
1909 ngx_http_upstream_ssl_shutdown(u->peer.connection,
|
|
|
1910 &u->peer.peers->peer[u->peer.cur_peer]);
|
|
|
1911 }
|
|
|
1912 #endif
|
|
479
|
1913 ngx_close_connection(u->peer.connection);
|
|
|
1914 }
|
|
|
1915
|
|
483
|
1916 u->peer.connection = NULL;
|
|
|
1917
|
|
563
|
1918 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
479
|
1919 {
|
|
|
1920 rc = 0;
|
|
|
1921 }
|
|
|
1922
|
|
581
|
1923 if (u->pipe && u->pipe->temp_file) {
|
|
479
|
1924 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1925 "http upstream temp fd: %d",
|
|
581
|
1926 u->pipe->temp_file->file.fd);
|
|
479
|
1927 }
|
|
|
1928
|
|
|
1929 #if 0
|
|
|
1930 if (u->cache) {
|
|
|
1931 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
483
|
1932 "http upstream cache fd: %d",
|
|
479
|
1933 u->cache->ctx.file.fd);
|
|
|
1934 }
|
|
|
1935 #endif
|
|
|
1936
|
|
509
|
1937 r->log_handler = u->saved_log_handler;
|
|
515
|
1938
|
|
|
1939 if (rc == NGX_DECLINED) {
|
|
|
1940 return;
|
|
|
1941 }
|
|
|
1942
|
|
483
|
1943 r->connection->log->action = "sending to client";
|
|
|
1944
|
|
629
|
1945 if (rc == 0 && r == r->main && !r->post_action) {
|
|
581
|
1946 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
479
|
1947 }
|
|
|
1948
|
|
|
1949 ngx_http_finalize_request(r, rc);
|
|
|
1950 }
|
|
|
1951
|
|
|
1952
|
|
577
|
1953 #if (NGX_HTTP_SSL)
|
|
|
1954
|
|
|
1955 static void
|
|
|
1956 ngx_http_upstream_ssl_shutdown(ngx_connection_t *c, ngx_peer_t *peer)
|
|
|
1957 {
|
|
|
1958 /* lock peer mutex */
|
|
|
1959
|
|
|
1960 if (peer->ssl_session) {
|
|
|
1961 ngx_ssl_free_session(peer->ssl_session);
|
|
|
1962 }
|
|
|
1963
|
|
|
1964 peer->ssl_session = ngx_ssl_get_session(c);
|
|
|
1965
|
|
|
1966 /* unlock peer mutex */
|
|
|
1967
|
|
|
1968 /*
|
|
|
1969 * We send the "close notify" shutdown alert to the upstream only
|
|
|
1970 * and do not wait its "close notify" shutdown alert.
|
|
|
1971 * It is acceptable according to the TLS standard.
|
|
|
1972 */
|
|
|
1973
|
|
|
1974 c->ssl->no_wait_shutdown = 1;
|
|
|
1975
|
|
|
1976 (void) ngx_ssl_shutdown(c);
|
|
|
1977 }
|
|
|
1978
|
|
|
1979 #endif
|
|
|
1980
|
|
|
1981
|
|
509
|
1982 static ngx_int_t
|
|
|
1983 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1984 ngx_uint_t offset)
|
|
577
|
1985 {
|
|
509
|
1986 ngx_table_elt_t **ph;
|
|
577
|
1987
|
|
509
|
1988 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1989
|
|
|
1990 if (*ph == NULL) {
|
|
|
1991 *ph = h;
|
|
|
1992 }
|
|
|
1993
|
|
|
1994 return NGX_OK;
|
|
|
1995 }
|
|
|
1996
|
|
|
1997
|
|
|
1998 static ngx_int_t
|
|
|
1999 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2000 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2001 {
|
|
|
2002 ngx_array_t *pa;
|
|
|
2003 ngx_table_elt_t **ph;
|
|
|
2004
|
|
|
2005 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2006
|
|
|
2007 if (pa->elts == NULL) {
|
|
|
2008 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2009 {
|
|
|
2010 return NGX_ERROR;
|
|
|
2011 }
|
|
|
2012 }
|
|
|
2013
|
|
|
2014 ph = ngx_array_push(pa);
|
|
|
2015 if (ph == NULL) {
|
|
|
2016 return NGX_ERROR;
|
|
|
2017 }
|
|
|
2018
|
|
|
2019 *ph = h;
|
|
|
2020
|
|
|
2021 return NGX_OK;
|
|
|
2022 }
|
|
|
2023
|
|
|
2024
|
|
|
2025 static ngx_int_t
|
|
|
2026 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2027 ngx_uint_t offset)
|
|
|
2028 {
|
|
|
2029 return NGX_OK;
|
|
|
2030 }
|
|
|
2031
|
|
|
2032
|
|
|
2033 static ngx_int_t
|
|
527
|
2034 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2035 ngx_uint_t offset)
|
|
577
|
2036 {
|
|
527
|
2037 ngx_int_t n;
|
|
|
2038
|
|
|
2039 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2040
|
|
|
2041 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2042
|
|
|
2043 if (n != NGX_ERROR) {
|
|
|
2044 r->limit_rate = (size_t) n;
|
|
|
2045 }
|
|
|
2046
|
|
|
2047 return NGX_OK;
|
|
|
2048 }
|
|
|
2049
|
|
|
2050
|
|
|
2051 static ngx_int_t
|
|
509
|
2052 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2053 ngx_uint_t offset)
|
|
|
2054 {
|
|
573
|
2055 ngx_table_elt_t *ho, **ph;
|
|
509
|
2056
|
|
|
2057 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2058 if (ho == NULL) {
|
|
|
2059 return NGX_ERROR;
|
|
|
2060 }
|
|
|
2061
|
|
|
2062 *ho = *h;
|
|
|
2063
|
|
573
|
2064 if (offset) {
|
|
|
2065 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2066 *ph = ho;
|
|
|
2067 }
|
|
|
2068
|
|
509
|
2069 return NGX_OK;
|
|
|
2070 }
|
|
|
2071
|
|
|
2072
|
|
|
2073 static ngx_int_t
|
|
|
2074 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
2075 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2076 {
|
|
|
2077 ngx_flag_t *f;
|
|
|
2078 ngx_table_elt_t *ho;
|
|
|
2079
|
|
|
2080 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
2081
|
|
|
2082 if (*f == 0) {
|
|
|
2083 return NGX_OK;
|
|
|
2084 }
|
|
|
2085
|
|
|
2086 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2087 if (ho == NULL) {
|
|
|
2088 return NGX_ERROR;
|
|
|
2089 }
|
|
|
2090
|
|
|
2091 *ho = *h;
|
|
|
2092
|
|
|
2093 return NGX_OK;
|
|
|
2094 }
|
|
|
2095
|
|
|
2096
|
|
|
2097 static ngx_int_t
|
|
|
2098 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2099 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2100 {
|
|
|
2101 ngx_array_t *pa;
|
|
|
2102 ngx_table_elt_t *ho, **ph;
|
|
|
2103
|
|
|
2104 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2105
|
|
|
2106 if (pa->elts == NULL) {
|
|
|
2107 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2108 {
|
|
|
2109 return NGX_ERROR;
|
|
|
2110 }
|
|
|
2111 }
|
|
|
2112
|
|
|
2113 ph = ngx_array_push(pa);
|
|
|
2114 if (ph == NULL) {
|
|
|
2115 return NGX_ERROR;
|
|
|
2116 }
|
|
|
2117
|
|
|
2118 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2119 if (ho == NULL) {
|
|
|
2120 return NGX_ERROR;
|
|
|
2121 }
|
|
|
2122
|
|
|
2123 *ho = *h;
|
|
|
2124 *ph = ho;
|
|
|
2125
|
|
|
2126 return NGX_OK;
|
|
|
2127 }
|
|
|
2128
|
|
|
2129
|
|
|
2130 static ngx_int_t
|
|
|
2131 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2132 ngx_uint_t offset)
|
|
|
2133 {
|
|
|
2134 r->headers_out.content_type = h->value;
|
|
|
2135
|
|
|
2136 return NGX_OK;
|
|
|
2137 }
|
|
|
2138
|
|
|
2139
|
|
|
2140 static ngx_int_t
|
|
|
2141 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2142 ngx_uint_t offset)
|
|
|
2143 {
|
|
|
2144 ngx_table_elt_t *ho;
|
|
|
2145
|
|
|
2146 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2147 if (ho == NULL) {
|
|
|
2148 return NGX_ERROR;
|
|
|
2149 }
|
|
|
2150
|
|
|
2151 *ho = *h;
|
|
|
2152
|
|
|
2153 r->headers_out.content_length = ho;
|
|
|
2154 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2155
|
|
|
2156 return NGX_OK;
|
|
|
2157 }
|
|
|
2158
|
|
|
2159
|
|
|
2160 static ngx_int_t
|
|
|
2161 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2162 ngx_uint_t offset)
|
|
|
2163 {
|
|
|
2164 ngx_int_t rc;
|
|
|
2165 ngx_table_elt_t *ho;
|
|
|
2166
|
|
|
2167 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2168 if (ho == NULL) {
|
|
|
2169 return NGX_ERROR;
|
|
|
2170 }
|
|
|
2171
|
|
|
2172 *ho = *h;
|
|
|
2173
|
|
|
2174 if (r->upstream->rewrite_redirect) {
|
|
|
2175 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2176
|
|
529
|
2177 if (rc == NGX_DECLINED) {
|
|
|
2178 return NGX_OK;
|
|
|
2179 }
|
|
|
2180
|
|
509
|
2181 if (rc == NGX_OK) {
|
|
|
2182 r->headers_out.location = ho;
|
|
|
2183
|
|
|
2184 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2185 "rewritten location: \"%V\"", &ho->value);
|
|
|
2186 }
|
|
|
2187
|
|
|
2188 return rc;
|
|
|
2189 }
|
|
|
2190
|
|
|
2191 /*
|
|
|
2192 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2193 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2194 */
|
|
|
2195
|
|
|
2196 return NGX_OK;
|
|
|
2197 }
|
|
|
2198
|
|
|
2199
|
|
|
2200 static ngx_int_t
|
|
|
2201 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2202 ngx_uint_t offset)
|
|
|
2203 {
|
|
|
2204 u_char *p;
|
|
|
2205 ngx_int_t rc;
|
|
|
2206 ngx_table_elt_t *ho;
|
|
|
2207
|
|
|
2208 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2209 if (ho == NULL) {
|
|
|
2210 return NGX_ERROR;
|
|
|
2211 }
|
|
|
2212
|
|
|
2213 *ho = *h;
|
|
|
2214
|
|
|
2215 if (r->upstream->rewrite_redirect) {
|
|
|
2216
|
|
|
2217 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
2218
|
|
|
2219 if (p) {
|
|
|
2220 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2221
|
|
|
2222 } else {
|
|
|
2223 return NGX_OK;
|
|
|
2224 }
|
|
|
2225
|
|
529
|
2226 if (rc == NGX_DECLINED) {
|
|
|
2227 return NGX_OK;
|
|
|
2228 }
|
|
|
2229
|
|
509
|
2230 #if (NGX_DEBUG)
|
|
|
2231 if (rc == NGX_OK) {
|
|
|
2232 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2233 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2234 }
|
|
|
2235 #endif
|
|
|
2236
|
|
|
2237 return rc;
|
|
|
2238 }
|
|
|
2239
|
|
|
2240 return NGX_OK;
|
|
|
2241 }
|
|
|
2242
|
|
|
2243
|
|
|
2244 #if (NGX_HTTP_GZIP)
|
|
|
2245
|
|
|
2246 static ngx_int_t
|
|
|
2247 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2248 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2249 {
|
|
|
2250 ngx_table_elt_t *ho;
|
|
|
2251
|
|
|
2252 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2253 if (ho == NULL) {
|
|
|
2254 return NGX_ERROR;
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 *ho = *h;
|
|
|
2258
|
|
|
2259 r->headers_out.content_encoding = ho;
|
|
|
2260
|
|
|
2261 return NGX_OK;
|
|
|
2262 }
|
|
|
2263
|
|
|
2264 #endif
|
|
|
2265
|
|
|
2266
|
|
487
|
2267 static size_t
|
|
|
2268 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
479
|
2269 {
|
|
|
2270 if (r->upstream) {
|
|
|
2271 return r->upstream->states.nelts * (3 + 2);
|
|
|
2272 }
|
|
|
2273
|
|
|
2274 return 1;
|
|
|
2275 }
|
|
|
2276
|
|
|
2277
|
|
487
|
2278 static u_char *
|
|
|
2279 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
2280 ngx_http_log_op_t *op)
|
|
479
|
2281 {
|
|
|
2282 ngx_uint_t i;
|
|
|
2283 ngx_http_upstream_t *u;
|
|
|
2284 ngx_http_upstream_state_t *state;
|
|
|
2285
|
|
|
2286 u = r->upstream;
|
|
|
2287
|
|
573
|
2288 if (u == NULL || u->states.nelts == 0) {
|
|
479
|
2289 *buf = '-';
|
|
|
2290 return buf + 1;
|
|
|
2291 }
|
|
|
2292
|
|
|
2293 i = 0;
|
|
|
2294 state = u->states.elts;
|
|
|
2295
|
|
|
2296 for ( ;; ) {
|
|
|
2297 if (state[i].status == 0) {
|
|
|
2298 *buf++ = '-';
|
|
|
2299
|
|
|
2300 } else {
|
|
|
2301 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
2302 }
|
|
|
2303
|
|
|
2304 if (++i == u->states.nelts) {
|
|
|
2305 return buf;
|
|
|
2306 }
|
|
|
2307
|
|
|
2308 *buf++ = ',';
|
|
|
2309 *buf++ = ' ';
|
|
|
2310 }
|
|
|
2311 }
|
|
|
2312
|
|
|
2313
|
|
573
|
2314 static size_t
|
|
|
2315 ngx_http_upstream_log_response_time_getlen(ngx_http_request_t *r,
|
|
|
2316 uintptr_t data)
|
|
|
2317 {
|
|
|
2318 if (r->upstream) {
|
|
|
2319 return r->upstream->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2320 }
|
|
|
2321
|
|
|
2322 return 1;
|
|
|
2323 }
|
|
|
2324
|
|
|
2325
|
|
509
|
2326 static u_char *
|
|
563
|
2327 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
2328 ngx_http_log_op_t *op)
|
|
|
2329 {
|
|
|
2330 ngx_uint_t i;
|
|
|
2331 ngx_http_upstream_t *u;
|
|
|
2332 ngx_http_upstream_state_t *state;
|
|
|
2333
|
|
|
2334 u = r->upstream;
|
|
|
2335
|
|
573
|
2336 if (u == NULL || u->states.nelts == 0) {
|
|
563
|
2337 *buf = '-';
|
|
|
2338 return buf + 1;
|
|
|
2339 }
|
|
|
2340
|
|
|
2341 i = 0;
|
|
|
2342 state = u->states.elts;
|
|
|
2343
|
|
|
2344 for ( ;; ) {
|
|
|
2345 if (state[i].status == 0) {
|
|
|
2346 *buf++ = '-';
|
|
|
2347
|
|
|
2348 } else {
|
|
|
2349 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
2350 state[i].response_time / 1000,
|
|
|
2351 state[i].response_time % 1000);
|
|
|
2352 }
|
|
|
2353
|
|
|
2354 if (++i == u->states.nelts) {
|
|
|
2355 return buf;
|
|
|
2356 }
|
|
|
2357
|
|
|
2358 *buf++ = ',';
|
|
|
2359 *buf++ = ' ';
|
|
|
2360 }
|
|
|
2361 }
|
|
|
2362
|
|
|
2363
|
|
|
2364 static u_char *
|
|
509
|
2365 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
479
|
2366 {
|
|
|
2367 u_char *p;
|
|
|
2368 ngx_http_upstream_t *u;
|
|
|
2369 ngx_peer_connection_t *peer;
|
|
|
2370
|
|
|
2371 u = r->upstream;
|
|
|
2372 peer = &u->peer;
|
|
|
2373
|
|
|
2374 p = ngx_snprintf(buf, len,
|
|
509
|
2375 ", server: %V, URL: \"%V\","
|
|
569
|
2376 " upstream: \"%V%V%s%V\"",
|
|
503
|
2377 &r->server_name,
|
|
479
|
2378 &r->unparsed_uri,
|
|
509
|
2379 &u->conf->schema,
|
|
479
|
2380 &peer->peers->peer[peer->cur_peer].name,
|
|
|
2381 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
555
|
2382 &u->uri);
|
|
479
|
2383 len -= p - buf;
|
|
|
2384 buf = p;
|
|
|
2385
|
|
505
|
2386 return ngx_http_log_error_info(r, buf, len);
|
|
479
|
2387 }
|
|
|
2388
|
|
|
2389
|
|
487
|
2390 static ngx_int_t
|
|
573
|
2391 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
479
|
2392 {
|
|
573
|
2393 ngx_http_variable_t *var, *v;
|
|
479
|
2394 ngx_http_log_op_name_t *op;
|
|
|
2395
|
|
573
|
2396 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2397 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2398 if (var == NULL) {
|
|
|
2399 return NGX_ERROR;
|
|
|
2400 }
|
|
|
2401
|
|
|
2402 var->handler = v->handler;
|
|
|
2403 var->data = v->data;
|
|
|
2404 }
|
|
|
2405
|
|
479
|
2406 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
2407 op->run = NULL;
|
|
|
2408
|
|
|
2409 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
2410 if (op->name.len == 0) {
|
|
|
2411 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
2412 }
|
|
|
2413 }
|
|
|
2414
|
|
|
2415 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
|
|
|
2416
|
|
|
2417 return NGX_OK;
|
|
|
2418 }
|
|
509
|
2419
|
|
|
2420
|
|
573
|
2421 static ngx_int_t
|
|
|
2422 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2423 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2424 {
|
|
|
2425 u_char *p;
|
|
|
2426 size_t len;
|
|
|
2427 ngx_uint_t i;
|
|
|
2428 ngx_http_upstream_t *u;
|
|
|
2429 ngx_http_upstream_state_t *state;
|
|
|
2430
|
|
|
2431 v->valid = 1;
|
|
|
2432 v->no_cachable = 0;
|
|
|
2433 v->not_found = 0;
|
|
|
2434
|
|
|
2435 u = r->upstream;
|
|
|
2436
|
|
|
2437 if (u == NULL || u->states.nelts == 0) {
|
|
|
2438 v->not_found = 1;
|
|
|
2439 return NGX_OK;
|
|
|
2440 }
|
|
|
2441
|
|
|
2442 len = u->states.nelts * (3 + 2);
|
|
|
2443
|
|
|
2444 p = ngx_palloc(r->pool, len);
|
|
|
2445 if (p == NULL) {
|
|
|
2446 return NGX_ERROR;
|
|
|
2447 }
|
|
|
2448
|
|
|
2449 v->data = p;
|
|
|
2450
|
|
|
2451 i = 0;
|
|
|
2452 state = u->states.elts;
|
|
|
2453
|
|
|
2454 for ( ;; ) {
|
|
|
2455 if (state[i].status == 0) {
|
|
|
2456 *p++ = '-';
|
|
|
2457
|
|
|
2458 } else {
|
|
|
2459 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
|
2460 }
|
|
|
2461
|
|
|
2462 if (++i == u->states.nelts) {
|
|
|
2463 break;
|
|
|
2464 }
|
|
|
2465
|
|
|
2466 *p++ = ',';
|
|
|
2467 *p++ = ' ';
|
|
|
2468 }
|
|
|
2469
|
|
|
2470 v->len = p - v->data;
|
|
|
2471
|
|
|
2472 return NGX_OK;
|
|
|
2473 }
|
|
|
2474
|
|
|
2475
|
|
|
2476 static ngx_int_t
|
|
|
2477 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2478 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2479 {
|
|
|
2480 u_char *p;
|
|
|
2481 size_t len;
|
|
|
2482 ngx_uint_t i;
|
|
|
2483 ngx_http_upstream_t *u;
|
|
|
2484 ngx_http_upstream_state_t *state;
|
|
|
2485
|
|
|
2486 v->valid = 1;
|
|
|
2487 v->no_cachable = 0;
|
|
|
2488 v->not_found = 0;
|
|
|
2489
|
|
|
2490 u = r->upstream;
|
|
|
2491
|
|
|
2492 if (u == NULL || u->states.nelts == 0) {
|
|
|
2493 v->not_found = 1;
|
|
|
2494 return NGX_OK;
|
|
|
2495 }
|
|
|
2496
|
|
|
2497 len = u->states.nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
|
2498
|
|
|
2499 p = ngx_palloc(r->pool, len);
|
|
|
2500 if (p == NULL) {
|
|
|
2501 return NGX_ERROR;
|
|
|
2502 }
|
|
|
2503
|
|
|
2504 v->data = p;
|
|
|
2505
|
|
|
2506 i = 0;
|
|
|
2507 state = u->states.elts;
|
|
|
2508
|
|
|
2509 for ( ;; ) {
|
|
|
2510 if (state[i].status == 0) {
|
|
|
2511 *p++ = '-';
|
|
|
2512
|
|
|
2513 } else {
|
|
|
2514 p = ngx_sprintf(p, "%d.%03d",
|
|
|
2515 state[i].response_time / 1000,
|
|
|
2516 state[i].response_time % 1000);
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 if (++i == u->states.nelts) {
|
|
|
2520 break;
|
|
|
2521 }
|
|
|
2522
|
|
|
2523 *p++ = ',';
|
|
|
2524 *p++ = ' ';
|
|
|
2525 }
|
|
|
2526
|
|
|
2527 v->len = p - v->data;
|
|
|
2528
|
|
|
2529 return NGX_OK;
|
|
|
2530 }
|
|
|
2531
|
|
|
2532
|
|
509
|
2533 static void *
|
|
|
2534 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
2535 {
|
|
|
2536 ngx_http_upstream_main_conf_t *umcf;
|
|
|
2537
|
|
|
2538 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
2539 if (umcf == NULL) {
|
|
|
2540 return NULL;
|
|
|
2541 }
|
|
|
2542
|
|
|
2543 return umcf;
|
|
|
2544 }
|
|
|
2545
|
|
|
2546
|
|
|
2547 static char *
|
|
|
2548 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
|
2549 {
|
|
|
2550 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
2551
|
|
577
|
2552 umcf->headers_in_hash.max_size = 100;
|
|
509
|
2553 umcf->headers_in_hash.bucket_limit = 1;
|
|
|
2554 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
2555 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
2556
|
|
589
|
2557 if (ngx_hash0_init(&umcf->headers_in_hash, cf->pool,
|
|
509
|
2558 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
2559 {
|
|
|
2560 return NGX_CONF_ERROR;
|
|
|
2561 }
|
|
|
2562
|
|
|
2563 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
2564 "http upstream headers_in hash size: %ui, "
|
|
|
2565 "max buckets per entry: %ui",
|
|
|
2566 umcf->headers_in_hash.hash_size,
|
|
|
2567 umcf->headers_in_hash.min_buckets);
|
|
|
2568
|
|
|
2569 return NGX_CONF_OK;
|
|
|
2570 }
|
