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