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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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58
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9 #include <ngx_event_connect.h>
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28
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10 #include <ngx_http.h>
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11
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12
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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28
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23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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25 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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26 ngx_http_upstream_t *u);
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58
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27 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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28 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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29 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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30 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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31 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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32 static void ngx_http_upstream_cleanup(void *data);
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28
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33 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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34 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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35
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58
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36 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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37 ngx_table_elt_t *h, ngx_uint_t offset);
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38 static ngx_int_t
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39 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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40 ngx_table_elt_t *h, ngx_uint_t offset);
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41 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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42 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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43 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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44 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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45 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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46 ngx_table_elt_t *h, ngx_uint_t offset);
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47 static ngx_int_t
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48 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
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49 ngx_table_elt_t *h, ngx_uint_t offset);
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50 static ngx_int_t
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51 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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53 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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55 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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57 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 #if (NGX_HTTP_GZIP)
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62 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 #endif
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65
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28
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66 static size_t ngx_http_upstream_log_status_getlen(ngx_http_request_t *r,
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36
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67 uintptr_t data);
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68 static u_char *ngx_http_upstream_log_status(ngx_http_request_t *r,
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69 u_char *buf, ngx_http_log_op_t *op);
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112
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70 static u_char *ngx_http_upstream_log_response_time(ngx_http_request_t *r,
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71 u_char *buf, ngx_http_log_op_t *op);
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28
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72
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58
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73 static u_char *ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf,
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74 size_t len);
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28
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75 static ngx_int_t ngx_http_upstream_add_log_formats(ngx_conf_t *cf);
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58
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76 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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77 static char *ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf);
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78
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79
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80 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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81
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82 { ngx_string("Status"),
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83 ngx_http_upstream_process_header_line,
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84 offsetof(ngx_http_upstream_headers_in_t, status),
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64
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85 /* STUB */ ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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86
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87 { ngx_string("Content-Type"),
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88 ngx_http_upstream_process_header_line,
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89 offsetof(ngx_http_upstream_headers_in_t, content_type),
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64
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90 ngx_http_upstream_copy_content_type, 0, 0 },
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58
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91
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92 { ngx_string("Content-Length"),
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93 ngx_http_upstream_process_header_line,
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94 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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95 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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96
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97 { ngx_string("Date"),
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98 ngx_http_upstream_process_header_line,
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99 offsetof(ngx_http_upstream_headers_in_t, date),
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100 ngx_http_upstream_conditional_copy_header_line,
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64
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101 offsetof(ngx_http_upstream_conf_t, pass_date), 0 },
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58
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102
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103 { ngx_string("Server"),
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104 ngx_http_upstream_process_header_line,
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105 offsetof(ngx_http_upstream_headers_in_t, server),
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106 ngx_http_upstream_conditional_copy_header_line,
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64
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107 offsetof(ngx_http_upstream_conf_t, pass_server), 0 },
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58
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108
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78
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109 { ngx_string("WWW-Authenticate"),
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110 ngx_http_upstream_process_header_line,
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111 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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112 ngx_http_upstream_copy_header_line, 0, 0 },
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113
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58
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114 { ngx_string("Location"),
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115 ngx_http_upstream_ignore_header_line, 0,
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64
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116 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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117
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118 { ngx_string("Refresh"),
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119 ngx_http_upstream_ignore_header_line, 0,
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64
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120 ngx_http_upstream_rewrite_refresh, 0, 0 },
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121
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122 { ngx_string("Set-Cookie"),
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123 ngx_http_upstream_ignore_header_line, 0,
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80
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124 ngx_http_upstream_copy_header_line, 0, 1 },
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125
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126 { ngx_string("Content-Disposition"),
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127 ngx_http_upstream_ignore_header_line, 0,
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128 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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129
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130 { ngx_string("Cache-Control"),
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131 ngx_http_upstream_process_multi_header_lines,
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132 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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133 ngx_http_upstream_copy_multi_header_lines,
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64
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134 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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135
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136 { ngx_string("Connection"),
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137 ngx_http_upstream_ignore_header_line, 0,
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64
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138 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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139
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140 { ngx_string("X-Pad"),
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141 ngx_http_upstream_ignore_header_line, 0,
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64
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142 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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143
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144 { ngx_string("X-Powered-By"),
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145 ngx_http_upstream_ignore_header_line, 0,
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146 ngx_http_upstream_conditional_copy_header_line,
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64
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147 offsetof(ngx_http_upstream_conf_t, pass_x_powered_by), 0 },
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58
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148
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149 { ngx_string("X-Accel-Expires"),
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150 ngx_http_upstream_process_header_line,
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151 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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152 ngx_http_upstream_conditional_copy_header_line,
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64
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153 offsetof(ngx_http_upstream_conf_t, pass_x_accel_expires), 0 },
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154
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155 { ngx_string("X-Accel-Redirect"),
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156 ngx_http_upstream_process_header_line,
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157 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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158 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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159
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76
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160 { ngx_string("X-Accel-Limit-Rate"),
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161 ngx_http_upstream_process_limit_rate, 0,
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162 ngx_http_upstream_ignore_header_line, 0, 0 },
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163
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58
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164 #if (NGX_HTTP_GZIP)
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165 { ngx_string("Content-Encoding"),
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166 ngx_http_upstream_process_header_line,
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167 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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168 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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169 #endif
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170
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64
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171 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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172 };
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28
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173
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174
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175 ngx_http_module_t ngx_http_upstream_module_ctx = {
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58
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176 ngx_http_upstream_add_log_formats, /* preconfiguration */
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177 NULL, /* postconfiguration */
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178
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179 ngx_http_upstream_create_main_conf, /* create main configuration */
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180 ngx_http_core_init_main_conf, /* init main configuration */
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28
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181
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182 NULL, /* create server configuration */
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183 NULL, /* merge server configuration */
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184
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185 NULL, /* create location configuration */
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186 NULL /* merge location configuration */
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187 };
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188
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189
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190 ngx_module_t ngx_http_upstream_module = {
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58
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191 NGX_MODULE_V1,
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192 &ngx_http_upstream_module_ctx, /* module context */
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193 NULL, /* module directives */
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194 NGX_HTTP_MODULE, /* module type */
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90
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195 NULL, /* init master */
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196 NULL, /* init module */
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90
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197 NULL, /* init process */
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198 NULL, /* init thread */
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199 NULL, /* exit thread */
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200 NULL, /* exit process */
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201 NULL, /* exit master */
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202 NGX_MODULE_V1_PADDING
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28
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203 };
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204
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205
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206 static ngx_http_log_op_name_t ngx_http_upstream_log_fmt_ops[] = {
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207 { ngx_string("upstream_status"), 0, NULL,
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208 ngx_http_upstream_log_status_getlen,
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209 ngx_http_upstream_log_status },
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112
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210 { ngx_string("upstream_response_time"), NGX_TIME_T_LEN + 4, NULL, NULL,
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211 ngx_http_upstream_log_response_time },
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28
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212 { ngx_null_string, 0, NULL, NULL, NULL }
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213 };
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214
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215
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216 char *ngx_http_upstream_header_errors[] = {
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217 "upstream sent invalid header",
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218 "upstream sent too long header line"
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219 };
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220
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221
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36
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222 void
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223 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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224 {
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112
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225 ngx_time_t *tp;
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58
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226 ngx_connection_t *c;
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118
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227 ngx_http_cleanup_t *cln;
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58
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228 ngx_http_upstream_t *u;
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229 ngx_http_core_loc_conf_t *clcf;
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28
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230
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231 c = r->connection;
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232
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233 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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234 "http init upstream, client timer: %d", c->read->timer_set);
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235
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236 if (c->read->timer_set) {
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237 ngx_del_timer(c->read);
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238 }
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239
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240 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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80
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241 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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28
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242
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243 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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244
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245 if (!c->write->active) {
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80
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246 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
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247 == NGX_ERROR)
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28
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248 {
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249 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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250 return;
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251 }
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252 }
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253 }
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254
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255 u = r->upstream;
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256
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86
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257 if (r->request_body) {
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258 u->request_bufs = r->request_body->bufs;
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259 }
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58
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260
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86
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261 if (u->create_request(r) != NGX_OK) {
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28
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262 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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263 return;
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264 }
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265
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266 u->peer.log = r->connection->log;
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58
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267 u->saved_log_handler = r->log_handler;
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268 r->log_handler = ngx_http_upstream_log_error;
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269
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270 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
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28
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271
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272 u->output.sendfile = r->connection->sendfile;
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273 u->output.pool = r->pool;
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274 u->output.bufs.num = 1;
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58
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275 u->output.bufs.size = clcf->client_body_buffer_size;
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28
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276 u->output.output_filter = ngx_chain_writer;
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277 u->output.filter_ctx = &u->writer;
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278
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279 u->writer.pool = r->pool;
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280
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281 if (ngx_array_init(&u->states, r->pool, u->peer.peers->number,
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118
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282 sizeof(ngx_http_upstream_state_t))
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283 != NGX_OK)
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28
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284 {
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285 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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286 return;
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287 }
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288
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50
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289 u->state = ngx_array_push(&u->states);
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290 if (u->state == NULL) {
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28
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291 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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292 return;
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293 }
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294
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295 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
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296
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112
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297 tp = ngx_timeofday();
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298
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299 u->state->response_time = tp->sec * 1000 + tp->msec;
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300
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118
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301 cln = ngx_http_cleanup_add(r, sizeof(void *));
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302 if (cln == NULL) {
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303 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
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304 return;
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305 }
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306
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307 cln->handler = ngx_http_upstream_cleanup;
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308 cln->data = r;
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309 u->cleanup = &cln->handler;
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310
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28
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311 ngx_http_upstream_connect(r, u);
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312 }
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313
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314
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36
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315 static void
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58
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316 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
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317 {
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318 ngx_http_upstream_check_broken_connection(r, r->connection->read);
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319 }
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320
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321
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322 static void
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323 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
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324 {
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325 ngx_http_upstream_check_broken_connection(r, r->connection->write);
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326 }
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327
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328
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329 static void
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330 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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331 ngx_event_t *ev)
|
|
28
|
332 {
|
|
|
333 int n;
|
|
|
334 char buf[1];
|
|
|
335 ngx_err_t err;
|
|
|
336 ngx_connection_t *c;
|
|
|
337 ngx_http_upstream_t *u;
|
|
|
338
|
|
76
|
339 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
340 "http upstream check client, write event:%d, \"%V\"",
|
|
|
341 ev->write, &r->uri);
|
|
28
|
342
|
|
58
|
343 c = r->connection;
|
|
32
|
344 u = r->upstream;
|
|
|
345
|
|
76
|
346 if (c->closed) {
|
|
|
347 ngx_http_upstream_finalize_request(r, u,
|
|
|
348 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
349 return;
|
|
|
350 }
|
|
|
351
|
|
32
|
352 if (u->peer.connection == NULL) {
|
|
|
353 return;
|
|
|
354 }
|
|
|
355
|
|
28
|
356 #if (NGX_HAVE_KQUEUE)
|
|
|
357
|
|
|
358 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
359
|
|
|
360 if (!ev->pending_eof) {
|
|
|
361 return;
|
|
|
362 }
|
|
|
363
|
|
|
364 ev->eof = 1;
|
|
76
|
365 c->closed = 1;
|
|
28
|
366
|
|
|
367 if (ev->kq_errno) {
|
|
|
368 ev->error = 1;
|
|
|
369 }
|
|
|
370
|
|
|
371 if (!u->cachable && u->peer.connection) {
|
|
|
372 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
373 "kevent() reported that client closed prematurely "
|
|
|
374 "connection, so upstream connection is closed too");
|
|
28
|
375 ngx_http_upstream_finalize_request(r, u,
|
|
|
376 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
377 return;
|
|
|
378 }
|
|
|
379
|
|
|
380 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
381 "kevent() reported that client closed "
|
|
|
382 "prematurely connection");
|
|
|
383
|
|
|
384 if (u->peer.connection == NULL) {
|
|
|
385 ngx_http_upstream_finalize_request(r, u,
|
|
|
386 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
387 return;
|
|
|
388 }
|
|
|
389
|
|
|
390 return;
|
|
|
391 }
|
|
|
392
|
|
|
393 #endif
|
|
|
394
|
|
|
395 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
396
|
|
|
397 err = ngx_socket_errno;
|
|
|
398
|
|
|
399 /*
|
|
|
400 * we do not need to disable the write event because
|
|
|
401 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
402 */
|
|
|
403
|
|
|
404 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
405 return;
|
|
|
406 }
|
|
|
407
|
|
|
408 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
409 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
410 ngx_http_upstream_finalize_request(r, u,
|
|
|
411 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
412 return;
|
|
|
413 }
|
|
|
414 }
|
|
|
415
|
|
|
416 if (n > 0) {
|
|
|
417 return;
|
|
|
418 }
|
|
|
419
|
|
|
420 if (n == -1) {
|
|
|
421 if (err == NGX_EAGAIN) {
|
|
|
422 return;
|
|
|
423 }
|
|
|
424
|
|
|
425 ev->error = 1;
|
|
|
426
|
|
32
|
427 } else { /* n == 0 */
|
|
28
|
428 err = 0;
|
|
|
429 }
|
|
|
430
|
|
78
|
431 ev->eof = 1;
|
|
|
432 c->closed = 1;
|
|
|
433
|
|
28
|
434 if (!u->cachable && u->peer.connection) {
|
|
|
435 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
436 "client closed prematurely connection, "
|
|
|
437 "so upstream connection is closed too");
|
|
|
438 ngx_http_upstream_finalize_request(r, u,
|
|
|
439 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
440 return;
|
|
|
441 }
|
|
|
442
|
|
|
443 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
444 "client closed prematurely connection");
|
|
|
445
|
|
|
446 if (u->peer.connection == NULL) {
|
|
|
447 ngx_http_upstream_finalize_request(r, u,
|
|
|
448 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
449 return;
|
|
|
450 }
|
|
|
451 }
|
|
|
452
|
|
|
453
|
|
36
|
454 static void
|
|
|
455 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
456 {
|
|
|
457 ngx_int_t rc;
|
|
|
458 ngx_connection_t *c;
|
|
|
459
|
|
32
|
460 r->connection->log->action = "connecting to upstream";
|
|
28
|
461
|
|
|
462 r->connection->single_connection = 0;
|
|
|
463
|
|
|
464 rc = ngx_event_connect_peer(&u->peer);
|
|
|
465
|
|
|
466 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
467 "http upstream connect: %i", rc);
|
|
|
468
|
|
|
469 if (rc == NGX_ERROR) {
|
|
|
470 ngx_http_upstream_finalize_request(r, u,
|
|
|
471 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
472 return;
|
|
|
473 }
|
|
|
474
|
|
|
475 u->state->peer = &u->peer.peers->peer[u->peer.cur_peer].name;
|
|
|
476
|
|
92
|
477 if (rc == NGX_BUSY) {
|
|
|
478 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
|
479 }
|
|
|
480
|
|
|
481 if (rc == NGX_BUSY || rc == NGX_DECLINED) {
|
|
28
|
482 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
483 return;
|
|
|
484 }
|
|
|
485
|
|
|
486 c = u->peer.connection;
|
|
|
487
|
|
|
488 c->data = r;
|
|
58
|
489 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
490 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
491
|
|
|
492 c->sendfile = r->connection->sendfile;
|
|
|
493
|
|
|
494 c->pool = r->pool;
|
|
|
495 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
496
|
|
|
497 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
498
|
|
|
499 u->writer.out = NULL;
|
|
|
500 u->writer.last = &u->writer.out;
|
|
|
501 u->writer.connection = c;
|
|
|
502 u->writer.limit = 0;
|
|
|
503
|
|
|
504 if (u->request_sent) {
|
|
58
|
505 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
506 ngx_http_upstream_finalize_request(r, u,
|
|
|
507 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
508 return;
|
|
|
509 }
|
|
28
|
510 }
|
|
|
511
|
|
58
|
512 if (r->request_body) {
|
|
102
|
513 if (r->request_body->temp_file && r->main == r) {
|
|
58
|
514
|
|
|
515 /*
|
|
|
516 * the r->request_body->buf can be reused for one request only,
|
|
|
517 * the subrequests should allocate their own temporay bufs
|
|
|
518 */
|
|
28
|
519
|
|
50
|
520 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
521 if (u->output.free == NULL) {
|
|
28
|
522 ngx_http_upstream_finalize_request(r, u,
|
|
|
523 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
524 return;
|
|
|
525 }
|
|
|
526
|
|
|
527 u->output.free->buf = r->request_body->buf;
|
|
|
528 u->output.free->next = NULL;
|
|
|
529 u->output.allocated = 1;
|
|
|
530
|
|
|
531 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
532 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
533 r->request_body->buf->tag = u->output.tag;
|
|
|
534 }
|
|
|
535 }
|
|
|
536
|
|
|
537 u->request_sent = 0;
|
|
|
538
|
|
|
539 if (rc == NGX_AGAIN) {
|
|
|
540 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
541 return;
|
|
|
542 }
|
|
|
543
|
|
|
544 /* rc == NGX_OK */
|
|
|
545
|
|
|
546 ngx_http_upstream_send_request(r, u);
|
|
|
547 }
|
|
|
548
|
|
|
549
|
|
58
|
550 static ngx_int_t
|
|
36
|
551 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
552 {
|
|
|
553 ngx_chain_t *cl;
|
|
|
554
|
|
58
|
555 if (u->reinit_request(r) != NGX_OK) {
|
|
|
556 return NGX_ERROR;
|
|
|
557 }
|
|
|
558
|
|
|
559 ngx_memzero(&r->upstream->headers_in,
|
|
|
560 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
561
|
|
|
562 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
563 sizeof(ngx_table_elt_t)) != NGX_OK)
|
|
|
564 {
|
|
|
565 return NGX_ERROR;
|
|
28
|
566 }
|
|
|
567
|
|
|
568 /* reinit the request chain */
|
|
|
569
|
|
58
|
570 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
571 cl->buf->pos = cl->buf->start;
|
|
|
572 cl->buf->file_pos = 0;
|
|
|
573 }
|
|
|
574
|
|
58
|
575 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
576
|
|
|
577 if (r->request_body) {
|
|
102
|
578 if (r->request_body->temp_file && r->main != r && u->output.buf) {
|
|
58
|
579
|
|
|
580 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
581 if (u->output.free == NULL) {
|
|
|
582 return NGX_ERROR;
|
|
|
583 }
|
|
|
584
|
|
|
585 u->output.free->buf = u->output.buf;
|
|
|
586 u->output.free->next = NULL;
|
|
|
587
|
|
|
588 u->output.buf->pos = u->output.buf->start;
|
|
|
589 u->output.buf->last = u->output.buf->start;
|
|
|
590 }
|
|
|
591 }
|
|
28
|
592
|
|
|
593 u->output.buf = NULL;
|
|
|
594 u->output.in = NULL;
|
|
|
595 u->output.busy = NULL;
|
|
|
596
|
|
|
597 /* reinit u->header_in buffer */
|
|
|
598
|
|
|
599 #if 0
|
|
|
600 if (u->cache) {
|
|
|
601 u->header_in.pos = u->header_in.start + u->cache->ctx.header_size;
|
|
|
602 u->header_in.last = u->header_in.pos;
|
|
|
603
|
|
|
604 } else {
|
|
|
605 u->header_in.pos = u->header_in.start;
|
|
|
606 u->header_in.last = u->header_in.start;
|
|
|
607 }
|
|
|
608 #else
|
|
58
|
609
|
|
28
|
610 u->header_in.pos = u->header_in.start;
|
|
|
611 u->header_in.last = u->header_in.start;
|
|
58
|
612
|
|
28
|
613 #endif
|
|
|
614
|
|
|
615 /* add one more state */
|
|
|
616
|
|
50
|
617 u->state = ngx_array_push(&u->states);
|
|
|
618 if (u->state == NULL) {
|
|
58
|
619 return NGX_ERROR;
|
|
28
|
620 }
|
|
|
621
|
|
|
622 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
58
|
623
|
|
|
624 return NGX_OK;
|
|
28
|
625 }
|
|
|
626
|
|
|
627
|
|
36
|
628 static void
|
|
|
629 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
630 {
|
|
32
|
631 int rc;
|
|
|
632 ngx_connection_t *c;
|
|
28
|
633
|
|
|
634 c = u->peer.connection;
|
|
|
635
|
|
|
636 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
637 "http upstream send request");
|
|
|
638
|
|
|
639 #if (NGX_HAVE_KQUEUE)
|
|
|
640
|
|
|
641 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT)
|
|
|
642 && !u->request_sent
|
|
|
643 && c->write->pending_eof)
|
|
|
644 {
|
|
86
|
645 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
646 "kevent() reported that connect() failed");
|
|
28
|
647 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
648 return;
|
|
|
649 }
|
|
|
650
|
|
|
651 #endif
|
|
|
652
|
|
32
|
653 c->log->action = "sending request to upstream";
|
|
28
|
654
|
|
58
|
655 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
656
|
|
|
657 u->request_sent = 1;
|
|
|
658
|
|
|
659 if (rc == NGX_ERROR) {
|
|
|
660 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
661 return;
|
|
|
662 }
|
|
|
663
|
|
|
664 if (c->write->timer_set) {
|
|
|
665 ngx_del_timer(c->write);
|
|
|
666 }
|
|
|
667
|
|
|
668 if (rc == NGX_AGAIN) {
|
|
|
669 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
670
|
|
|
671 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
672 {
|
|
|
673 ngx_http_upstream_finalize_request(r, u,
|
|
|
674 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
675 return;
|
|
|
676 }
|
|
|
677
|
|
|
678 return;
|
|
|
679 }
|
|
|
680
|
|
|
681 /* rc == NGX_OK */
|
|
|
682
|
|
|
683 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
684 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
685 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
686 ngx_tcp_push_n " failed");
|
|
|
687 ngx_http_upstream_finalize_request(r, u,
|
|
|
688 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
689 return;
|
|
|
690 }
|
|
|
691
|
|
|
692 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
693 return;
|
|
|
694 }
|
|
|
695
|
|
|
696 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
697
|
|
|
698 #if 1
|
|
|
699 if (c->read->ready) {
|
|
|
700
|
|
|
701 /* post aio operation */
|
|
|
702
|
|
|
703 /*
|
|
|
704 * TODO comment
|
|
|
705 * although we can post aio operation just in the end
|
|
|
706 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
707 * it's better to do here because we postpone header buffer allocation
|
|
|
708 */
|
|
|
709
|
|
|
710 ngx_http_upstream_process_header(c->read);
|
|
|
711 return;
|
|
|
712 }
|
|
|
713 #endif
|
|
|
714
|
|
58
|
715 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
716
|
|
58
|
717 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
718 ngx_http_upstream_finalize_request(r, u,
|
|
|
719 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
720 return;
|
|
|
721 }
|
|
|
722 }
|
|
|
723
|
|
|
724
|
|
36
|
725 static void
|
|
|
726 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
727 {
|
|
|
728 ngx_connection_t *c;
|
|
|
729 ngx_http_request_t *r;
|
|
|
730 ngx_http_upstream_t *u;
|
|
|
731
|
|
|
732 c = wev->data;
|
|
|
733 r = c->data;
|
|
|
734 u = r->upstream;
|
|
|
735
|
|
|
736 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
737 "http upstream send request handler");
|
|
|
738
|
|
|
739 if (wev->timedout) {
|
|
32
|
740 c->log->action = "sending request to upstream";
|
|
28
|
741 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
742 return;
|
|
|
743 }
|
|
|
744
|
|
|
745 ngx_http_upstream_send_request(r, u);
|
|
|
746 }
|
|
|
747
|
|
|
748
|
|
36
|
749 static void
|
|
|
750 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
751 {
|
|
64
|
752 ssize_t n;
|
|
|
753 ngx_int_t rc;
|
|
|
754 ngx_uint_t i, key;
|
|
|
755 ngx_list_part_t *part;
|
|
|
756 ngx_table_elt_t *h;
|
|
|
757 ngx_connection_t *c;
|
|
|
758 ngx_http_request_t *r;
|
|
|
759 ngx_http_upstream_t *u;
|
|
|
760 ngx_http_err_page_t *err_page;
|
|
|
761 ngx_http_core_loc_conf_t *clcf;
|
|
|
762 ngx_http_upstream_header_t *hh;
|
|
|
763 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
764
|
|
|
765 c = rev->data;
|
|
|
766 r = c->data;
|
|
|
767 u = r->upstream;
|
|
|
768
|
|
|
769 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
770 "http upstream process header");
|
|
28
|
771
|
|
32
|
772 c->log->action = "reading response header from upstream";
|
|
28
|
773
|
|
|
774 if (rev->timedout) {
|
|
|
775 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
776 return;
|
|
|
777 }
|
|
|
778
|
|
|
779 if (u->header_in.start == NULL) {
|
|
|
780 u->header_in.start = ngx_palloc(r->pool, u->conf->header_buffer_size);
|
|
|
781 if (u->header_in.start == NULL) {
|
|
|
782 ngx_http_upstream_finalize_request(r, u,
|
|
|
783 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
784 return;
|
|
|
785 }
|
|
|
786
|
|
|
787 u->header_in.pos = u->header_in.start;
|
|
|
788 u->header_in.last = u->header_in.start;
|
|
32
|
789 u->header_in.end = u->header_in.start + u->conf->header_buffer_size;
|
|
28
|
790 u->header_in.temporary = 1;
|
|
|
791
|
|
|
792 u->header_in.tag = u->output.tag;
|
|
|
793
|
|
58
|
794 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
|
795 sizeof(ngx_table_elt_t)) == NGX_ERROR)
|
|
|
796 {
|
|
|
797 ngx_http_upstream_finalize_request(r, u,
|
|
|
798 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
799 return;
|
|
|
800 }
|
|
|
801
|
|
28
|
802 #if 0
|
|
|
803 if (u->cache) {
|
|
|
804 u->header_in.pos += u->cache->ctx.header_size;
|
|
|
805 u->header_in.last = u->header_in.pos;
|
|
|
806 }
|
|
|
807 #endif
|
|
|
808 }
|
|
|
809
|
|
|
810 n = ngx_recv(u->peer.connection, u->header_in.last,
|
|
|
811 u->header_in.end - u->header_in.last);
|
|
|
812
|
|
|
813 if (n == NGX_AGAIN) {
|
|
|
814 #if 0
|
|
|
815 ngx_add_timer(rev, u->read_timeout);
|
|
|
816 #endif
|
|
|
817
|
|
|
818 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
819 ngx_http_upstream_finalize_request(r, u,
|
|
|
820 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
821 return;
|
|
|
822 }
|
|
|
823
|
|
|
824 return;
|
|
|
825 }
|
|
|
826
|
|
|
827 if (n == 0) {
|
|
|
828 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
829 "upstream prematurely closed connection");
|
|
|
830 }
|
|
|
831
|
|
|
832 if (n == NGX_ERROR || n == 0) {
|
|
|
833 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
834 return;
|
|
|
835 }
|
|
|
836
|
|
|
837 u->header_in.last += n;
|
|
|
838
|
|
|
839 #if 0
|
|
|
840 u->valid_header_in = 0;
|
|
|
841
|
|
|
842 u->peer.cached = 0;
|
|
|
843 #endif
|
|
|
844
|
|
|
845 rc = u->process_header(r);
|
|
|
846
|
|
|
847 if (rc == NGX_AGAIN) {
|
|
|
848 #if 0
|
|
|
849 ngx_add_timer(rev, u->read_timeout);
|
|
|
850 #endif
|
|
|
851
|
|
58
|
852 if (u->header_in.pos == u->header_in.end) {
|
|
28
|
853 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
854 "upstream sent too big header");
|
|
|
855
|
|
|
856 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
857 return;
|
|
|
858 }
|
|
|
859
|
|
|
860 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
861 ngx_http_upstream_finalize_request(r, u,
|
|
|
862 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
863 return;
|
|
|
864 }
|
|
|
865
|
|
|
866 return;
|
|
|
867 }
|
|
|
868
|
|
|
869 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
870 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
871 return;
|
|
|
872 }
|
|
|
873
|
|
|
874 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
875 ngx_http_upstream_finalize_request(r, u,
|
|
|
876 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
877 return;
|
|
|
878 }
|
|
|
879
|
|
|
880 /* rc == NGX_OK */
|
|
|
881
|
|
78
|
882 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
883
|
|
|
884 if (u->peer.tries > 1
|
|
|
885 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
886 {
|
|
|
887 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
888 return;
|
|
|
889 }
|
|
|
890
|
|
|
891 #if (NGX_HTTP_CACHE)
|
|
|
892
|
|
|
893 if (u->peer.tries == 0
|
|
|
894 && u->stale
|
|
|
895 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
896 {
|
|
|
897 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
898 ngx_http_send_cached_response(r));
|
|
58
|
899 return;
|
|
|
900 }
|
|
|
901
|
|
|
902 #endif
|
|
|
903 }
|
|
|
904
|
|
78
|
905 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND
|
|
58
|
906 && u->peer.tries > 1
|
|
|
907 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
908 {
|
|
|
909 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
910 return;
|
|
|
911 }
|
|
|
912
|
|
|
913
|
|
78
|
914 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
36
|
915 && u->conf->redirect_errors
|
|
|
916 && r->err_ctx == NULL)
|
|
|
917 {
|
|
|
918 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
919
|
|
|
920 if (clcf->error_pages) {
|
|
|
921
|
|
|
922 err_page = clcf->error_pages->elts;
|
|
|
923 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
924 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
925
|
|
|
926 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
927
|
|
|
928 r->headers_out.www_authenticate =
|
|
|
929 ngx_list_push(&r->headers_out.headers);
|
|
|
930
|
|
|
931 if (r->headers_out.www_authenticate == NULL) {
|
|
|
932 ngx_http_upstream_finalize_request(r, u,
|
|
|
933 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
934 return;
|
|
|
935 }
|
|
|
936
|
|
|
937 *r->headers_out.www_authenticate =
|
|
|
938 *u->headers_in.www_authenticate;
|
|
|
939 }
|
|
|
940
|
|
36
|
941 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
942 u->headers_in.status_n);
|
|
36
|
943 return;
|
|
|
944 }
|
|
|
945 }
|
|
|
946 }
|
|
|
947 }
|
|
|
948
|
|
64
|
949 if (r->upstream->headers_in.x_accel_redirect) {
|
|
|
950 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
951
|
|
|
952 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
953 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
954
|
|
|
955 part = &r->upstream->headers_in.headers.part;
|
|
|
956 h = part->elts;
|
|
|
957
|
|
|
958 for (i = 0; /* void */; i++) {
|
|
|
959
|
|
|
960 if (i >= part->nelts) {
|
|
|
961 if (part->next == NULL) {
|
|
|
962 break;
|
|
|
963 }
|
|
|
964
|
|
|
965 part = part->next;
|
|
|
966 h = part->elts;
|
|
|
967 i = 0;
|
|
|
968 }
|
|
|
969
|
|
|
970 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
971
|
|
|
972 if (hh[key].redirect
|
|
|
973 && hh[key].name.len == h[i].key.len
|
|
|
974 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
975 {
|
|
|
976 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
977 ngx_http_upstream_finalize_request(r, u,
|
|
|
978 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
979 return;
|
|
|
980 }
|
|
|
981
|
|
|
982 }
|
|
|
983 }
|
|
|
984
|
|
|
985 ngx_http_internal_redirect(r,
|
|
|
986 &r->upstream->headers_in.x_accel_redirect->value,
|
|
|
987 NULL);
|
|
|
988 return;
|
|
|
989 }
|
|
|
990
|
|
28
|
991 ngx_http_upstream_send_response(r, u);
|
|
|
992 }
|
|
|
993
|
|
|
994
|
|
36
|
995 static void
|
|
|
996 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
997 {
|
|
58
|
998 ngx_int_t rc;
|
|
|
999 ngx_uint_t i, key;
|
|
|
1000 ngx_list_part_t *part;
|
|
|
1001 ngx_table_elt_t *h;
|
|
|
1002 ngx_event_pipe_t *p;
|
|
112
|
1003 ngx_pool_cleanup_t *cl;
|
|
|
1004 ngx_pool_cleanup_file_t *clf;
|
|
58
|
1005 ngx_http_core_loc_conf_t *clcf;
|
|
|
1006 ngx_http_upstream_header_t *hh;
|
|
|
1007 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1008
|
|
|
1009 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1010 hh = (ngx_http_upstream_header_t *) umcf->headers_in_hash.buckets;
|
|
|
1011
|
|
|
1012 part = &r->upstream->headers_in.headers.part;
|
|
|
1013 h = part->elts;
|
|
|
1014
|
|
|
1015 for (i = 0; /* void */; i++) {
|
|
28
|
1016
|
|
58
|
1017 if (i >= part->nelts) {
|
|
|
1018 if (part->next == NULL) {
|
|
|
1019 break;
|
|
|
1020 }
|
|
|
1021
|
|
|
1022 part = part->next;
|
|
|
1023 h = part->elts;
|
|
|
1024 i = 0;
|
|
|
1025 }
|
|
|
1026
|
|
|
1027 key = h[i].hash % umcf->headers_in_hash.hash_size;
|
|
|
1028
|
|
|
1029 if (hh[key].name.len == h[i].key.len
|
|
|
1030 && ngx_strcasecmp(hh[key].name.data, h[i].key.data) == 0)
|
|
|
1031 {
|
|
|
1032 if (hh[key].copy_handler(r, &h[i], hh[key].conf) != NGX_OK) {
|
|
|
1033 ngx_http_upstream_finalize_request(r, u,
|
|
|
1034 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1035 return;
|
|
|
1036 }
|
|
|
1037
|
|
|
1038 continue;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1042 ngx_http_upstream_finalize_request(r, u,
|
|
|
1043 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1044 return;
|
|
|
1045 }
|
|
|
1046 }
|
|
|
1047
|
|
78
|
1048 r->headers_out.status = u->headers_in.status_n;
|
|
|
1049 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1050
|
|
58
|
1051 rc = ngx_http_send_header(r);
|
|
28
|
1052
|
|
34
|
1053 if (rc == NGX_ERROR || rc > NGX_OK) {
|
|
|
1054 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1055 return;
|
|
|
1056 }
|
|
|
1057
|
|
|
1058 u->header_sent = 1;
|
|
|
1059
|
|
112
|
1060 if (r->request_body->temp_file) {
|
|
|
1061 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1062 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1063 clf = cl->data;
|
|
|
1064
|
|
|
1065 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1066 cl->handler(clf);
|
|
|
1067 cl->handler = NULL;
|
|
|
1068 break;
|
|
|
1069 }
|
|
|
1070 }
|
|
|
1071 }
|
|
|
1072 }
|
|
|
1073
|
|
28
|
1074 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1075
|
|
|
1076 #if 0
|
|
|
1077
|
|
|
1078 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1079 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
|
1080 ngx_log_error(NGX_LOG_ALERT, r->connection->log, ngx_errno,
|
|
|
1081 ngx_close_file_n " \"%s\" failed",
|
|
|
1082 u->cache->ctx.file.name.data);
|
|
|
1083 }
|
|
|
1084 }
|
|
|
1085
|
|
|
1086 if (u->cachable) {
|
|
|
1087 header = (ngx_http_cache_header_t *) u->header_in->start;
|
|
|
1088
|
|
|
1089 header->expires = u->cache->ctx.expires;
|
|
|
1090 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1091 header->date = u->cache->ctx.date;
|
|
|
1092 header->length = r->headers_out.content_length_n;
|
|
|
1093 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1094
|
|
|
1095 header->key_len = u->cache->ctx.key0.len;
|
|
|
1096 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1097 header->key[header->key_len] = LF;
|
|
|
1098 }
|
|
|
1099
|
|
|
1100 #endif
|
|
|
1101
|
|
|
1102 p = &u->pipe;
|
|
|
1103
|
|
|
1104 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1105 p->output_ctx = r;
|
|
|
1106 p->tag = u->output.tag;
|
|
|
1107 p->bufs = u->conf->bufs;
|
|
|
1108 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1109 p->upstream = u->peer.connection;
|
|
|
1110 p->downstream = r->connection;
|
|
|
1111 p->pool = r->pool;
|
|
|
1112 p->log = r->connection->log;
|
|
|
1113
|
|
|
1114 p->cachable = u->cachable;
|
|
|
1115
|
|
50
|
1116 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1117 if (p->temp_file == NULL) {
|
|
28
|
1118 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1119 return;
|
|
|
1120 }
|
|
|
1121
|
|
|
1122 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
|
1123 p->temp_file->file.log = r->connection->log;
|
|
|
1124 p->temp_file->path = u->conf->temp_path;
|
|
|
1125 p->temp_file->pool = r->pool;
|
|
|
1126
|
|
|
1127 if (u->cachable) {
|
|
|
1128 p->temp_file->persistent = 1;
|
|
|
1129 } else {
|
|
|
1130 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1131 "to a temporary file";
|
|
|
1132 }
|
|
|
1133
|
|
|
1134 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1135 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1136
|
|
50
|
1137 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1138 if (p->preread_bufs == NULL) {
|
|
28
|
1139 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1140 return;
|
|
|
1141 }
|
|
|
1142 p->preread_bufs->buf = &u->header_in;
|
|
|
1143 p->preread_bufs->next = NULL;
|
|
|
1144 u->header_in.recycled = 1;
|
|
|
1145
|
|
|
1146 p->preread_size = u->header_in.last - u->header_in.pos;
|
|
|
1147
|
|
|
1148 if (u->cachable) {
|
|
|
1149 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1150 if (p->buf_to_file == NULL) {
|
|
|
1151 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1152 return;
|
|
|
1153 }
|
|
|
1154 p->buf_to_file->pos = u->header_in.start;
|
|
|
1155 p->buf_to_file->last = u->header_in.pos;
|
|
|
1156 p->buf_to_file->temporary = 1;
|
|
|
1157 }
|
|
|
1158
|
|
|
1159 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1160 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1161 p->single_buf = 1;
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1165 p->free_bufs = 1;
|
|
|
1166
|
|
|
1167 /*
|
|
|
1168 * event_pipe would do u->header_in.last += p->preread_size
|
|
|
1169 * as though these bytes were read
|
|
|
1170 */
|
|
|
1171 u->header_in.last = u->header_in.pos;
|
|
|
1172
|
|
|
1173 if (u->conf->cyclic_temp_file) {
|
|
|
1174
|
|
|
1175 /*
|
|
|
1176 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1177 * because the writing a new data may interfere with sendfile()
|
|
|
1178 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1179 */
|
|
|
1180
|
|
|
1181 p->cyclic_temp_file = 1;
|
|
|
1182 r->connection->sendfile = 0;
|
|
|
1183
|
|
|
1184 } else {
|
|
|
1185 p->cyclic_temp_file = 0;
|
|
|
1186 }
|
|
|
1187
|
|
|
1188 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1189
|
|
|
1190 p->read_timeout = u->conf->read_timeout;
|
|
|
1191 p->send_timeout = clcf->send_timeout;
|
|
|
1192 p->send_lowat = clcf->send_lowat;
|
|
|
1193
|
|
58
|
1194 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1195 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1196
|
|
|
1197 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1198 }
|
|
|
1199
|
|
|
1200
|
|
36
|
1201 static void
|
|
58
|
1202 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1203 {
|
|
|
1204 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1205 }
|
|
|
1206
|
|
|
1207
|
|
|
1208 static void
|
|
36
|
1209 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1210 {
|
|
58
|
1211 ngx_event_pipe_t *p;
|
|
28
|
1212 ngx_connection_t *c;
|
|
|
1213 ngx_http_request_t *r;
|
|
|
1214 ngx_http_upstream_t *u;
|
|
|
1215
|
|
|
1216 c = ev->data;
|
|
|
1217 r = c->data;
|
|
|
1218 u = r->upstream;
|
|
|
1219
|
|
|
1220 if (ev->write) {
|
|
32
|
1221 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1222 "http upstream process downstream");
|
|
|
1223 c->log->action = "sending to client";
|
|
28
|
1224
|
|
|
1225 } else {
|
|
32
|
1226 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1227 "http upstream process upstream");
|
|
|
1228 c->log->action = "reading upstream";
|
|
28
|
1229 }
|
|
|
1230
|
|
|
1231 p = &u->pipe;
|
|
|
1232
|
|
|
1233 if (ev->timedout) {
|
|
|
1234 if (ev->write) {
|
|
76
|
1235 if (ev->delayed) {
|
|
|
1236
|
|
|
1237 ev->timedout = 0;
|
|
|
1238 ev->delayed = 0;
|
|
|
1239
|
|
|
1240 if (!ev->ready) {
|
|
|
1241 ngx_add_timer(ev, p->send_timeout);
|
|
|
1242
|
|
|
1243 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1244 {
|
|
|
1245 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1246 return;
|
|
|
1247 }
|
|
|
1248
|
|
|
1249 return;
|
|
|
1250 }
|
|
|
1251
|
|
|
1252 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1253 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1254 return;
|
|
|
1255 }
|
|
|
1256
|
|
|
1257 } else {
|
|
|
1258 p->downstream_error = 1;
|
|
|
1259 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1260 "client timed out");
|
|
|
1261 }
|
|
28
|
1262
|
|
|
1263 } else {
|
|
|
1264 p->upstream_error = 1;
|
|
|
1265 ngx_log_error(NGX_LOG_ERR, c->log, NGX_ETIMEDOUT,
|
|
|
1266 "upstream timed out");
|
|
|
1267 }
|
|
|
1268
|
|
|
1269 } else {
|
|
76
|
1270 if (ev->write && ev->delayed) {
|
|
|
1271 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1272 "http downstream delayed");
|
|
|
1273
|
|
|
1274 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
1275 return;
|
|
|
1276 }
|
|
|
1277
|
|
|
1278 return;
|
|
|
1279 }
|
|
|
1280
|
|
28
|
1281 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
|
1282 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1283 return;
|
|
|
1284 }
|
|
|
1285 }
|
|
|
1286
|
|
|
1287 if (u->peer.connection) {
|
|
|
1288
|
|
|
1289 #if (NGX_HTTP_FILE_CACHE)
|
|
|
1290
|
|
|
1291 if (p->upstream_done && u->cachable) {
|
|
|
1292 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1293 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1294 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1295 return;
|
|
|
1296 }
|
|
|
1297
|
|
|
1298 } else if (p->upstream_eof && u->cachable) {
|
|
|
1299
|
|
|
1300 /* TODO: check length & update cache */
|
|
|
1301
|
|
|
1302 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
1303 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1304 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1305 return;
|
|
|
1306 }
|
|
|
1307 }
|
|
|
1308
|
|
|
1309 #endif
|
|
|
1310
|
|
|
1311 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
1312 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1313 "http upstream exit: %p", p->out);
|
|
28
|
1314 #if 0
|
|
|
1315 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1316 #endif
|
|
|
1317 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1318 return;
|
|
|
1319 }
|
|
|
1320 }
|
|
|
1321
|
|
|
1322 if (p->downstream_error) {
|
|
32
|
1323 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1324 "http upstream downstream error");
|
|
28
|
1325
|
|
|
1326 if (!u->cachable && u->peer.connection) {
|
|
|
1327 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1328 }
|
|
|
1329 }
|
|
|
1330 }
|
|
|
1331
|
|
|
1332
|
|
36
|
1333 static void
|
|
|
1334 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
1335 {
|
|
|
1336 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1337 "http upstream dummy handler");
|
|
|
1338 }
|
|
|
1339
|
|
|
1340
|
|
36
|
1341 static void
|
|
|
1342 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
1343 ngx_uint_t ft_type)
|
|
28
|
1344 {
|
|
74
|
1345 ngx_uint_t status, down;
|
|
28
|
1346
|
|
|
1347 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1348 "http next upstream, %xD", ft_type);
|
|
|
1349
|
|
|
1350 #if 0
|
|
|
1351 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
1352 #endif
|
|
|
1353
|
|
74
|
1354 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
|
1355 down = 0;
|
|
|
1356 } else {
|
|
|
1357 down = 1;
|
|
28
|
1358 }
|
|
74
|
1359
|
|
|
1360 ngx_event_connect_peer_failed(&u->peer, down);
|
|
|
1361
|
|
28
|
1362 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
1363 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
1364 "upstream timed out");
|
|
|
1365 }
|
|
|
1366
|
|
|
1367 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
1368 status = 0;
|
|
|
1369
|
|
|
1370 } else {
|
|
|
1371 switch(ft_type) {
|
|
|
1372
|
|
|
1373 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
1374 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
1375 break;
|
|
|
1376
|
|
|
1377 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
1378 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
1379 break;
|
|
|
1380
|
|
|
1381 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
1382 status = NGX_HTTP_NOT_FOUND;
|
|
|
1383 break;
|
|
|
1384
|
|
|
1385 /*
|
|
|
1386 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
1387 * never reach here
|
|
|
1388 */
|
|
|
1389
|
|
|
1390 default:
|
|
|
1391 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
1392 }
|
|
|
1393 }
|
|
|
1394
|
|
118
|
1395 if (r->connection->closed) {
|
|
28
|
1396 ngx_http_upstream_finalize_request(r, u,
|
|
|
1397 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1398 return;
|
|
|
1399 }
|
|
|
1400
|
|
|
1401 if (status) {
|
|
|
1402 u->state->status = status;
|
|
|
1403
|
|
74
|
1404 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
1405
|
|
|
1406 #if (NGX_HTTP_CACHE)
|
|
|
1407
|
|
|
1408 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
1409 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
1410 ngx_http_send_cached_response(r));
|
|
28
|
1411 return;
|
|
|
1412 }
|
|
|
1413
|
|
|
1414 #endif
|
|
|
1415
|
|
|
1416 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1417 return;
|
|
|
1418 }
|
|
|
1419 }
|
|
|
1420
|
|
|
1421 if (u->peer.connection) {
|
|
|
1422 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1423 "close http upstream connection: %d",
|
|
|
1424 u->peer.connection->fd);
|
|
|
1425
|
|
|
1426 ngx_close_connection(u->peer.connection);
|
|
|
1427 }
|
|
|
1428
|
|
|
1429 #if 0
|
|
|
1430 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
1431 ngx_http_upstream_busy_lock(p);
|
|
|
1432 return;
|
|
|
1433 }
|
|
|
1434 #endif
|
|
|
1435
|
|
|
1436 ngx_http_upstream_connect(r, u);
|
|
|
1437 }
|
|
|
1438
|
|
|
1439
|
|
36
|
1440 static void
|
|
118
|
1441 ngx_http_upstream_cleanup(void *data)
|
|
|
1442 {
|
|
|
1443 ngx_http_request_t *r = data;
|
|
|
1444
|
|
|
1445 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1446 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
1447
|
|
|
1448 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
1449 }
|
|
|
1450
|
|
|
1451
|
|
|
1452 static void
|
|
36
|
1453 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
1454 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
1455 {
|
|
112
|
1456 ngx_time_t *tp;
|
|
|
1457
|
|
32
|
1458 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1459 "finalize http upstream request: %i", rc);
|
|
28
|
1460
|
|
118
|
1461 *u->cleanup = NULL;
|
|
|
1462
|
|
112
|
1463 if (u->state->response_time) {
|
|
|
1464 tp = ngx_timeofday();
|
|
|
1465 u->state->response_time = tp->sec * 1000 + tp->msec
|
|
|
1466 - u->state->response_time;
|
|
|
1467 }
|
|
|
1468
|
|
28
|
1469 u->finalize_request(r, rc);
|
|
|
1470
|
|
|
1471 if (u->peer.connection) {
|
|
|
1472 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1473 "close http upstream connection: %d",
|
|
|
1474 u->peer.connection->fd);
|
|
|
1475
|
|
|
1476 ngx_close_connection(u->peer.connection);
|
|
|
1477 }
|
|
|
1478
|
|
32
|
1479 u->peer.connection = NULL;
|
|
|
1480
|
|
112
|
1481 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
1482 {
|
|
|
1483 rc = 0;
|
|
|
1484 }
|
|
|
1485
|
|
30
|
1486 if (u->pipe.temp_file) {
|
|
28
|
1487 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1488 "http upstream temp fd: %d",
|
|
|
1489 u->pipe.temp_file->file.fd);
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 #if 0
|
|
|
1493 if (u->cache) {
|
|
|
1494 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
1495 "http upstream cache fd: %d",
|
|
28
|
1496 u->cache->ctx.file.fd);
|
|
|
1497 }
|
|
|
1498 #endif
|
|
|
1499
|
|
58
|
1500 r->log_handler = u->saved_log_handler;
|
|
64
|
1501
|
|
|
1502 if (rc == NGX_DECLINED) {
|
|
|
1503 return;
|
|
|
1504 }
|
|
|
1505
|
|
32
|
1506 r->connection->log->action = "sending to client";
|
|
|
1507
|
|
102
|
1508 if (rc == 0 && r->main == r) {
|
|
28
|
1509 rc = ngx_http_send_last(r);
|
|
|
1510 }
|
|
|
1511
|
|
|
1512 ngx_http_finalize_request(r, rc);
|
|
|
1513 }
|
|
|
1514
|
|
|
1515
|
|
58
|
1516 static ngx_int_t
|
|
|
1517 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1518 ngx_uint_t offset)
|
|
|
1519 {
|
|
|
1520 ngx_table_elt_t **ph;
|
|
|
1521
|
|
|
1522 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
1523
|
|
|
1524 if (*ph == NULL) {
|
|
|
1525 *ph = h;
|
|
|
1526 }
|
|
|
1527
|
|
|
1528 return NGX_OK;
|
|
|
1529 }
|
|
|
1530
|
|
|
1531
|
|
|
1532 static ngx_int_t
|
|
|
1533 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
1534 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1535 {
|
|
|
1536 ngx_array_t *pa;
|
|
|
1537 ngx_table_elt_t **ph;
|
|
|
1538
|
|
|
1539 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
1540
|
|
|
1541 if (pa->elts == NULL) {
|
|
|
1542 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1543 {
|
|
|
1544 return NGX_ERROR;
|
|
|
1545 }
|
|
|
1546 }
|
|
|
1547
|
|
|
1548 ph = ngx_array_push(pa);
|
|
|
1549 if (ph == NULL) {
|
|
|
1550 return NGX_ERROR;
|
|
|
1551 }
|
|
|
1552
|
|
|
1553 *ph = h;
|
|
|
1554
|
|
|
1555 return NGX_OK;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558
|
|
|
1559 static ngx_int_t
|
|
|
1560 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1561 ngx_uint_t offset)
|
|
|
1562 {
|
|
|
1563 return NGX_OK;
|
|
|
1564 }
|
|
|
1565
|
|
|
1566
|
|
|
1567 static ngx_int_t
|
|
76
|
1568 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1569 ngx_uint_t offset)
|
|
|
1570 {
|
|
|
1571 ngx_int_t n;
|
|
|
1572
|
|
|
1573 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
1574
|
|
|
1575 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
1576
|
|
|
1577 if (n != NGX_ERROR) {
|
|
|
1578 r->limit_rate = (size_t) n;
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 return NGX_OK;
|
|
|
1582 }
|
|
|
1583
|
|
|
1584
|
|
|
1585 static ngx_int_t
|
|
58
|
1586 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1587 ngx_uint_t offset)
|
|
|
1588 {
|
|
|
1589 ngx_table_elt_t *ho;
|
|
|
1590
|
|
|
1591 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1592 if (ho == NULL) {
|
|
|
1593 return NGX_ERROR;
|
|
|
1594 }
|
|
|
1595
|
|
|
1596 *ho = *h;
|
|
|
1597
|
|
|
1598 return NGX_OK;
|
|
|
1599 }
|
|
|
1600
|
|
|
1601
|
|
|
1602 static ngx_int_t
|
|
|
1603 ngx_http_upstream_conditional_copy_header_line(ngx_http_request_t *r,
|
|
|
1604 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1605 {
|
|
|
1606 ngx_flag_t *f;
|
|
|
1607 ngx_table_elt_t *ho;
|
|
|
1608
|
|
|
1609 f = (ngx_flag_t *) ((char *) r->upstream->conf + offset);
|
|
|
1610
|
|
|
1611 if (*f == 0) {
|
|
|
1612 return NGX_OK;
|
|
|
1613 }
|
|
|
1614
|
|
|
1615 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1616 if (ho == NULL) {
|
|
|
1617 return NGX_ERROR;
|
|
|
1618 }
|
|
|
1619
|
|
|
1620 *ho = *h;
|
|
|
1621
|
|
|
1622 return NGX_OK;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625
|
|
|
1626 static ngx_int_t
|
|
|
1627 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
1628 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1629 {
|
|
|
1630 ngx_array_t *pa;
|
|
|
1631 ngx_table_elt_t *ho, **ph;
|
|
|
1632
|
|
|
1633 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
1634
|
|
|
1635 if (pa->elts == NULL) {
|
|
|
1636 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
1637 {
|
|
|
1638 return NGX_ERROR;
|
|
|
1639 }
|
|
|
1640 }
|
|
|
1641
|
|
|
1642 ph = ngx_array_push(pa);
|
|
|
1643 if (ph == NULL) {
|
|
|
1644 return NGX_ERROR;
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1648 if (ho == NULL) {
|
|
|
1649 return NGX_ERROR;
|
|
|
1650 }
|
|
|
1651
|
|
|
1652 *ho = *h;
|
|
|
1653 *ph = ho;
|
|
|
1654
|
|
|
1655 return NGX_OK;
|
|
|
1656 }
|
|
|
1657
|
|
|
1658
|
|
|
1659 static ngx_int_t
|
|
|
1660 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1661 ngx_uint_t offset)
|
|
|
1662 {
|
|
|
1663 r->headers_out.content_type = h->value;
|
|
|
1664
|
|
|
1665 return NGX_OK;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668
|
|
|
1669 static ngx_int_t
|
|
|
1670 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1671 ngx_uint_t offset)
|
|
|
1672 {
|
|
|
1673 ngx_table_elt_t *ho;
|
|
|
1674
|
|
|
1675 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1676 if (ho == NULL) {
|
|
|
1677 return NGX_ERROR;
|
|
|
1678 }
|
|
|
1679
|
|
|
1680 *ho = *h;
|
|
|
1681
|
|
|
1682 r->headers_out.content_length = ho;
|
|
|
1683 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
1684
|
|
|
1685 return NGX_OK;
|
|
|
1686 }
|
|
|
1687
|
|
|
1688
|
|
|
1689 static ngx_int_t
|
|
|
1690 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1691 ngx_uint_t offset)
|
|
|
1692 {
|
|
|
1693 ngx_int_t rc;
|
|
|
1694 ngx_table_elt_t *ho;
|
|
|
1695
|
|
|
1696 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1697 if (ho == NULL) {
|
|
|
1698 return NGX_ERROR;
|
|
|
1699 }
|
|
|
1700
|
|
|
1701 *ho = *h;
|
|
|
1702
|
|
|
1703 if (r->upstream->rewrite_redirect) {
|
|
|
1704 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
1705
|
|
78
|
1706 if (rc == NGX_DECLINED) {
|
|
|
1707 return NGX_OK;
|
|
|
1708 }
|
|
|
1709
|
|
58
|
1710 if (rc == NGX_OK) {
|
|
|
1711 r->headers_out.location = ho;
|
|
|
1712
|
|
|
1713 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1714 "rewritten location: \"%V\"", &ho->value);
|
|
|
1715 }
|
|
|
1716
|
|
|
1717 return rc;
|
|
|
1718 }
|
|
|
1719
|
|
|
1720 /*
|
|
|
1721 * we do not set r->headers_out.location here to avoid the handling
|
|
|
1722 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
1723 */
|
|
|
1724
|
|
|
1725 return NGX_OK;
|
|
|
1726 }
|
|
|
1727
|
|
|
1728
|
|
|
1729 static ngx_int_t
|
|
|
1730 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
1731 ngx_uint_t offset)
|
|
|
1732 {
|
|
|
1733 u_char *p;
|
|
|
1734 ngx_int_t rc;
|
|
|
1735 ngx_table_elt_t *ho;
|
|
|
1736
|
|
|
1737 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1738 if (ho == NULL) {
|
|
|
1739 return NGX_ERROR;
|
|
|
1740 }
|
|
|
1741
|
|
|
1742 *ho = *h;
|
|
|
1743
|
|
|
1744 if (r->upstream->rewrite_redirect) {
|
|
|
1745
|
|
|
1746 p = (u_char *) ngx_strstr(ho->value.data, "url=");
|
|
|
1747
|
|
|
1748 if (p) {
|
|
|
1749 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
1750
|
|
|
1751 } else {
|
|
|
1752 return NGX_OK;
|
|
|
1753 }
|
|
|
1754
|
|
78
|
1755 if (rc == NGX_DECLINED) {
|
|
|
1756 return NGX_OK;
|
|
|
1757 }
|
|
|
1758
|
|
58
|
1759 #if (NGX_DEBUG)
|
|
|
1760 if (rc == NGX_OK) {
|
|
|
1761 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1762 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
1763 }
|
|
|
1764 #endif
|
|
|
1765
|
|
|
1766 return rc;
|
|
|
1767 }
|
|
|
1768
|
|
|
1769 return NGX_OK;
|
|
|
1770 }
|
|
|
1771
|
|
|
1772
|
|
|
1773 #if (NGX_HTTP_GZIP)
|
|
|
1774
|
|
|
1775 static ngx_int_t
|
|
|
1776 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
1777 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
1778 {
|
|
|
1779 ngx_table_elt_t *ho;
|
|
|
1780
|
|
|
1781 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
1782 if (ho == NULL) {
|
|
|
1783 return NGX_ERROR;
|
|
|
1784 }
|
|
|
1785
|
|
|
1786 *ho = *h;
|
|
|
1787
|
|
|
1788 r->headers_out.content_encoding = ho;
|
|
|
1789
|
|
|
1790 return NGX_OK;
|
|
|
1791 }
|
|
|
1792
|
|
|
1793 #endif
|
|
|
1794
|
|
|
1795
|
|
36
|
1796 static size_t
|
|
|
1797 ngx_http_upstream_log_status_getlen(ngx_http_request_t *r, uintptr_t data)
|
|
28
|
1798 {
|
|
|
1799 if (r->upstream) {
|
|
|
1800 return r->upstream->states.nelts * (3 + 2);
|
|
|
1801 }
|
|
|
1802
|
|
|
1803 return 1;
|
|
|
1804 }
|
|
|
1805
|
|
|
1806
|
|
36
|
1807 static u_char *
|
|
|
1808 ngx_http_upstream_log_status(ngx_http_request_t *r, u_char *buf,
|
|
|
1809 ngx_http_log_op_t *op)
|
|
28
|
1810 {
|
|
|
1811 ngx_uint_t i;
|
|
|
1812 ngx_http_upstream_t *u;
|
|
|
1813 ngx_http_upstream_state_t *state;
|
|
|
1814
|
|
|
1815 u = r->upstream;
|
|
|
1816
|
|
|
1817 if (u == NULL) {
|
|
|
1818 *buf = '-';
|
|
|
1819 return buf + 1;
|
|
|
1820 }
|
|
|
1821
|
|
|
1822 i = 0;
|
|
|
1823 state = u->states.elts;
|
|
|
1824
|
|
|
1825 for ( ;; ) {
|
|
|
1826 if (state[i].status == 0) {
|
|
|
1827 *buf++ = '-';
|
|
|
1828
|
|
|
1829 } else {
|
|
|
1830 buf = ngx_sprintf(buf, "%ui", state[i].status);
|
|
|
1831 }
|
|
|
1832
|
|
|
1833 if (++i == u->states.nelts) {
|
|
|
1834 return buf;
|
|
|
1835 }
|
|
|
1836
|
|
|
1837 *buf++ = ',';
|
|
|
1838 *buf++ = ' ';
|
|
|
1839 }
|
|
|
1840 }
|
|
|
1841
|
|
|
1842
|
|
58
|
1843 static u_char *
|
|
112
|
1844 ngx_http_upstream_log_response_time(ngx_http_request_t *r, u_char *buf,
|
|
|
1845 ngx_http_log_op_t *op)
|
|
|
1846 {
|
|
|
1847 ngx_uint_t i;
|
|
|
1848 ngx_http_upstream_t *u;
|
|
|
1849 ngx_http_upstream_state_t *state;
|
|
|
1850
|
|
|
1851 u = r->upstream;
|
|
|
1852
|
|
|
1853 if (u == NULL) {
|
|
|
1854 *buf = '-';
|
|
|
1855 return buf + 1;
|
|
|
1856 }
|
|
|
1857
|
|
|
1858 i = 0;
|
|
|
1859 state = u->states.elts;
|
|
|
1860
|
|
|
1861 for ( ;; ) {
|
|
|
1862 if (state[i].status == 0) {
|
|
|
1863 *buf++ = '-';
|
|
|
1864
|
|
|
1865 } else {
|
|
|
1866 buf = ngx_sprintf(buf, "%d.%03d",
|
|
|
1867 state[i].response_time / 1000,
|
|
|
1868 state[i].response_time % 1000);
|
|
|
1869 }
|
|
|
1870
|
|
|
1871 if (++i == u->states.nelts) {
|
|
|
1872 return buf;
|
|
|
1873 }
|
|
|
1874
|
|
|
1875 *buf++ = ',';
|
|
|
1876 *buf++ = ' ';
|
|
|
1877 }
|
|
|
1878 }
|
|
|
1879
|
|
|
1880
|
|
|
1881 static u_char *
|
|
58
|
1882 ngx_http_upstream_log_error(ngx_http_request_t *r, u_char *buf, size_t len)
|
|
28
|
1883 {
|
|
|
1884 u_char *p;
|
|
|
1885 ngx_http_upstream_t *u;
|
|
|
1886 ngx_peer_connection_t *peer;
|
|
|
1887
|
|
|
1888 u = r->upstream;
|
|
|
1889 peer = &u->peer;
|
|
|
1890
|
|
|
1891 p = ngx_snprintf(buf, len,
|
|
58
|
1892 ", server: %V, URL: \"%V\","
|
|
118
|
1893 " upstream: \"%V%V%s%V\"",
|
|
52
|
1894 &r->server_name,
|
|
28
|
1895 &r->unparsed_uri,
|
|
58
|
1896 &u->conf->schema,
|
|
28
|
1897 &peer->peers->peer[peer->cur_peer].name,
|
|
|
1898 peer->peers->peer[peer->cur_peer].uri_separator,
|
|
104
|
1899 &u->uri);
|
|
28
|
1900 len -= p - buf;
|
|
|
1901 buf = p;
|
|
|
1902
|
|
54
|
1903 return ngx_http_log_error_info(r, buf, len);
|
|
28
|
1904 }
|
|
|
1905
|
|
|
1906
|
|
36
|
1907 static ngx_int_t
|
|
|
1908 ngx_http_upstream_add_log_formats(ngx_conf_t *cf)
|
|
28
|
1909 {
|
|
|
1910 ngx_http_log_op_name_t *op;
|
|
|
1911
|
|
|
1912 for (op = ngx_http_upstream_log_fmt_ops; op->name.len; op++) { /* void */ }
|
|
|
1913 op->run = NULL;
|
|
|
1914
|
|
|
1915 for (op = ngx_http_log_fmt_ops; op->run; op++) {
|
|
|
1916 if (op->name.len == 0) {
|
|
|
1917 op = (ngx_http_log_op_name_t *) op->run;
|
|
|
1918 }
|
|
|
1919 }
|
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1920
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|
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1921 op->run = (ngx_http_log_op_run_pt) ngx_http_upstream_log_fmt_ops;
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|
|
1922
|
|
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1923 return NGX_OK;
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|
|
1924 }
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58
|
1925
|
|
|
1926
|
|
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1927 static void *
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|
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1928 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
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|
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1929 {
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1930 ngx_http_upstream_main_conf_t *umcf;
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|
|
1931
|
|
|
1932 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
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|
|
1933 if (umcf == NULL) {
|
|
|
1934 return NULL;
|
|
|
1935 }
|
|
|
1936
|
|
|
1937 return umcf;
|
|
|
1938 }
|
|
|
1939
|
|
|
1940
|
|
|
1941 static char *
|
|
|
1942 ngx_http_core_init_main_conf(ngx_conf_t *cf, void *conf)
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|
|
1943 {
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|
|
1944 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
1945
|
|
|
1946 umcf->headers_in_hash.max_size = 100;
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|
|
1947 umcf->headers_in_hash.bucket_limit = 1;
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|
|
1948 umcf->headers_in_hash.bucket_size = sizeof(ngx_http_upstream_header_t);
|
|
|
1949 umcf->headers_in_hash.name = "upstream_headers_in";
|
|
|
1950
|
|
|
1951 if (ngx_hash_init(&umcf->headers_in_hash, cf->pool,
|
|
|
1952 ngx_http_upstream_headers_in, 0) != NGX_OK)
|
|
|
1953 {
|
|
|
1954 return NGX_CONF_ERROR;
|
|
|
1955 }
|
|
|
1956
|
|
|
1957 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
|
1958 "http upstream headers_in hash size: %ui, "
|
|
|
1959 "max buckets per entry: %ui",
|
|
|
1960 umcf->headers_in_hash.hash_size,
|
|
|
1961 umcf->headers_in_hash.min_buckets);
|
|
|
1962
|
|
|
1963 return NGX_CONF_OK;
|
|
|
1964 }
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