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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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348
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12 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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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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294
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25 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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26 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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27 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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28 ngx_http_upstream_t *u);
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130
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29 static void
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30 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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31 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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32 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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33 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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34 ssize_t bytes);
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58
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35 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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36 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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318
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37 static void ngx_http_upstream_store(ngx_http_request_t *r,
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38 ngx_http_upstream_t *u);
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28
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39 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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40 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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41 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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42 static void ngx_http_upstream_cleanup(void *data);
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28
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43 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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44 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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45
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58
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46 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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48 static ngx_int_t
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49 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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50 ngx_table_elt_t *h, ngx_uint_t offset);
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51 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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53 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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55 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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57 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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59 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t
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62 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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70 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 #if (NGX_HTTP_GZIP)
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73 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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75 #endif
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76
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122
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77 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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78 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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79 ngx_http_variable_value_t *v, uintptr_t data);
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122
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80 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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81 ngx_http_variable_value_t *v, uintptr_t data);
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82 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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83 ngx_http_variable_value_t *v, uintptr_t data);
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84
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200
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85 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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86 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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87 void *conf);
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88
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58
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89 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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90 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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91
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126
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92 #if (NGX_HTTP_SSL)
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140
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93 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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94 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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95 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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96 #endif
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97
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58
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98
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99 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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100
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101 { ngx_string("Status"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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104 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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105
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106 { ngx_string("Content-Type"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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109 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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110
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111 { ngx_string("Content-Length"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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114 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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115
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116 { ngx_string("Date"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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119 ngx_http_upstream_copy_header_line,
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120 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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121
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318
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122 { ngx_string("Last-Modified"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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125 ngx_http_upstream_copy_header_line,
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126 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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127
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58
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128 { ngx_string("Server"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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131 ngx_http_upstream_copy_header_line,
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132 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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133
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78
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134 { ngx_string("WWW-Authenticate"),
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135 ngx_http_upstream_process_header_line,
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136 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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137 ngx_http_upstream_copy_header_line, 0, 0 },
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138
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58
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139 { ngx_string("Location"),
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140 ngx_http_upstream_ignore_header_line, 0,
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64
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141 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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142
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143 { ngx_string("Refresh"),
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144 ngx_http_upstream_ignore_header_line, 0,
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64
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145 ngx_http_upstream_rewrite_refresh, 0, 0 },
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146
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147 { ngx_string("Set-Cookie"),
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148 ngx_http_upstream_ignore_header_line, 0,
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80
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149 ngx_http_upstream_copy_header_line, 0, 1 },
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150
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151 { ngx_string("Content-Disposition"),
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152 ngx_http_upstream_ignore_header_line, 0,
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153 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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154
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155 { ngx_string("Cache-Control"),
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156 ngx_http_upstream_process_multi_header_lines,
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157 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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158 ngx_http_upstream_copy_multi_header_lines,
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64
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159 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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160
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122
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161 { ngx_string("Expires"),
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162 ngx_http_upstream_process_header_line,
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163 offsetof(ngx_http_upstream_headers_in_t, expires),
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164 ngx_http_upstream_copy_header_line,
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165 offsetof(ngx_http_headers_out_t, expires), 1 },
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166
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126
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167 { ngx_string("Accept-Ranges"),
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168 ngx_http_upstream_process_header_line,
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169 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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170 ngx_http_upstream_copy_header_line,
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171 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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172
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58
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173 { ngx_string("Connection"),
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174 ngx_http_upstream_ignore_header_line, 0,
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64
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175 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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176
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190
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177 { ngx_string("Keep-Alive"),
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178 ngx_http_upstream_ignore_header_line, 0,
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179 ngx_http_upstream_ignore_header_line, 0, 0 },
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180
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58
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181 { ngx_string("X-Powered-By"),
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182 ngx_http_upstream_ignore_header_line, 0,
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198
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183 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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184
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185 { ngx_string("X-Accel-Expires"),
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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188 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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189
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190 { ngx_string("X-Accel-Redirect"),
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191 ngx_http_upstream_process_header_line,
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192 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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194
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76
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195 { ngx_string("X-Accel-Limit-Rate"),
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196 ngx_http_upstream_process_limit_rate, 0,
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197 ngx_http_upstream_ignore_header_line, 0, 0 },
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198
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198
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199 { ngx_string("X-Accel-Buffering"),
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200 ngx_http_upstream_process_buffering, 0,
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201 ngx_http_upstream_ignore_header_line, 0, 0 },
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202
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206
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203 { ngx_string("X-Accel-Charset"),
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204 ngx_http_upstream_process_charset, 0,
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205 ngx_http_upstream_ignore_header_line, 0, 0 },
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206
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58
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207 #if (NGX_HTTP_GZIP)
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208 { ngx_string("Content-Encoding"),
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209 ngx_http_upstream_process_header_line,
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210 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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211 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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212 #endif
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213
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64
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214 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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215 };
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28
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216
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217
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200
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218 static ngx_command_t ngx_http_upstream_commands[] = {
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219
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220 { ngx_string("upstream"),
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221 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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222 ngx_http_upstream,
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223 0,
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224 0,
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225 NULL },
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226
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227 { ngx_string("server"),
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260
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228 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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229 ngx_http_upstream_server,
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230 NGX_HTTP_SRV_CONF_OFFSET,
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231 0,
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232 NULL },
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233
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234 ngx_null_command
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235 };
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236
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237
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238 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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239 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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240 NULL, /* postconfiguration */
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241
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242 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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243 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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244
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245 NULL, /* create server configuration */
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246 NULL, /* merge server configuration */
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247
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248 NULL, /* create location configuration */
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249 NULL /* merge location configuration */
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250 };
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126
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251
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28
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252
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253 ngx_module_t ngx_http_upstream_module = {
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58
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254 NGX_MODULE_V1,
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28
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255 &ngx_http_upstream_module_ctx, /* module context */
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200
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256 ngx_http_upstream_commands, /* module directives */
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28
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257 NGX_HTTP_MODULE, /* module type */
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90
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258 NULL, /* init master */
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28
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259 NULL, /* init module */
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90
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260 NULL, /* init process */
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261 NULL, /* init thread */
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262 NULL, /* exit thread */
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263 NULL, /* exit process */
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264 NULL, /* exit master */
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265 NGX_MODULE_V1_PADDING
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28
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266 };
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267
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268
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122
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269 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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270
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298
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271 { ngx_string("upstream_addr"), NULL,
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272 ngx_http_upstream_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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273
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186
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274 { ngx_string("upstream_status"), NULL,
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132
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275 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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276
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186
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277 { ngx_string("upstream_response_time"), NULL,
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132
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278 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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279
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186
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280 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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281 };
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282
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283
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36
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284 void
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285 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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286 {
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348
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287 ngx_str_t *host;
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288 ngx_uint_t i;
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289 ngx_connection_t *c;
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290 ngx_resolver_ctx_t *ctx, temp;
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291 ngx_http_cleanup_t *cln;
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292 ngx_http_upstream_t *u;
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293 ngx_http_core_loc_conf_t *clcf;
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294 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
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295 ngx_http_upstream_main_conf_t *umcf;
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28
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296
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297 c = r->connection;
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298
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299 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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300 "http init upstream, client timer: %d", c->read->timer_set);
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301
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302 if (c->read->timer_set) {
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303 ngx_del_timer(c->read);
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304 }
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305
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178
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306 u = r->upstream;
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307
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308 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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309 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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310 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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311 }
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126
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312
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28
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313 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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314
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315 if (!c->write->active) {
|
|
80
|
316 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
317 == NGX_ERROR)
|
|
28
|
318 {
|
|
|
319 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
320 return;
|
|
|
321 }
|
|
|
322 }
|
|
|
323 }
|
|
|
324
|
|
86
|
325 if (r->request_body) {
|
|
|
326 u->request_bufs = r->request_body->bufs;
|
|
|
327 }
|
|
58
|
328
|
|
86
|
329 if (u->create_request(r) != NGX_OK) {
|
|
28
|
330 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
331 return;
|
|
|
332 }
|
|
|
333
|
|
58
|
334 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
335
|
|
348
|
336 u->output.sendfile = c->sendfile;
|
|
28
|
337 u->output.pool = r->pool;
|
|
|
338 u->output.bufs.num = 1;
|
|
58
|
339 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
340 u->output.output_filter = ngx_chain_writer;
|
|
|
341 u->output.filter_ctx = &u->writer;
|
|
|
342
|
|
|
343 u->writer.pool = r->pool;
|
|
|
344
|
|
296
|
345 if (r->upstream_states == NULL) {
|
|
|
346
|
|
|
347 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
348 sizeof(ngx_http_upstream_state_t));
|
|
|
349 if (r->upstream_states == NULL) {
|
|
|
350 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
351 return;
|
|
|
352 }
|
|
|
353
|
|
|
354 } else {
|
|
|
355
|
|
|
356 u->state = ngx_array_push(r->upstream_states);
|
|
|
357 if (u->state == NULL) {
|
|
|
358 ngx_http_upstream_finalize_request(r, u,
|
|
|
359 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
360 return;
|
|
|
361 }
|
|
|
362
|
|
|
363 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
364 }
|
|
|
365
|
|
142
|
366 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
367 if (cln == NULL) {
|
|
|
368 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
369 return;
|
|
|
370 }
|
|
|
371
|
|
|
372 cln->handler = ngx_http_upstream_cleanup;
|
|
|
373 cln->data = r;
|
|
|
374 u->cleanup = &cln->handler;
|
|
|
375
|
|
320
|
376 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
377
|
|
348
|
378 if (u->resolved == NULL) {
|
|
|
379
|
|
|
380 uscf = u->conf->upstream;
|
|
|
381
|
|
|
382 } else {
|
|
|
383
|
|
356
|
384 host = &u->resolved->host;
|
|
348
|
385
|
|
|
386 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
387
|
|
|
388 uscfp = umcf->upstreams.elts;
|
|
|
389
|
|
|
390 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
391
|
|
|
392 uscf = uscfp[i];
|
|
|
393
|
|
|
394 if (uscf->host.len == host->len
|
|
366
|
395 && ((uscf->port == 0 && u->resolved->default_port)
|
|
|
396 || uscf->port == u->resolved->port)
|
|
348
|
397 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
398 {
|
|
|
399 goto found;
|
|
|
400 }
|
|
|
401 }
|
|
|
402
|
|
|
403 temp.name = *host;
|
|
|
404
|
|
|
405 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
406 if (ctx == NULL) {
|
|
|
407 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
408 return;
|
|
|
409 }
|
|
|
410
|
|
354
|
411 if (ctx == NGX_NO_RESOLVER) {
|
|
|
412 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
413 "no resolver defined to resolve %V", host);
|
|
|
414
|
|
|
415 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
416 return;
|
|
|
417 }
|
|
|
418
|
|
348
|
419 ctx->name = *host;
|
|
|
420 ctx->type = NGX_RESOLVE_A;
|
|
|
421 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
422 ctx->data = r;
|
|
|
423 ctx->timeout = clcf->resolver_timeout;
|
|
|
424
|
|
|
425 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
|
426 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
427 return;
|
|
|
428 }
|
|
|
429
|
|
366
|
430 u->resolved->ctx = ctx;
|
|
|
431
|
|
348
|
432 return;
|
|
|
433 }
|
|
|
434
|
|
|
435 found:
|
|
|
436
|
|
|
437 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
438 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
439 return;
|
|
|
440 }
|
|
|
441
|
|
28
|
442 ngx_http_upstream_connect(r, u);
|
|
|
443 }
|
|
|
444
|
|
|
445
|
|
36
|
446 static void
|
|
348
|
447 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
448 {
|
|
|
449 ngx_http_request_t *r;
|
|
|
450 ngx_http_upstream_resolved_t *ur;
|
|
|
451
|
|
|
452 r = ctx->data;
|
|
|
453
|
|
|
454 r->upstream->resolved->ctx = NULL;
|
|
|
455
|
|
|
456 if (ctx->state) {
|
|
|
457 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
458 "%V could not be resolved (%i: %s)",
|
|
|
459 &ctx->name, ctx->state,
|
|
|
460 ngx_resolver_strerror(ctx->state));
|
|
|
461
|
|
|
462 ngx_resolve_name_done(ctx);
|
|
|
463 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
464 return;
|
|
|
465 }
|
|
|
466
|
|
|
467 ur = r->upstream->resolved;
|
|
|
468 ur->naddrs = ctx->naddrs;
|
|
|
469 ur->addrs = ctx->addrs;
|
|
|
470
|
|
|
471 #if (NGX_DEBUG)
|
|
|
472 {
|
|
|
473 in_addr_t addr;
|
|
|
474 ngx_uint_t i;
|
|
|
475
|
|
|
476 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
477 addr = ntohl(ur->addrs[i]);
|
|
|
478
|
|
|
479 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
480 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
481 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
482 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
483 }
|
|
|
484 }
|
|
|
485 #endif
|
|
|
486
|
|
|
487 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
488 ngx_resolve_name_done(ctx);
|
|
|
489 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
490 return;
|
|
|
491 }
|
|
|
492
|
|
|
493 ngx_resolve_name_done(ctx);
|
|
|
494
|
|
|
495 ngx_http_upstream_connect(r, r->upstream);
|
|
|
496 }
|
|
|
497
|
|
|
498
|
|
|
499 static void
|
|
58
|
500 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
501 {
|
|
|
502 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
503 }
|
|
|
504
|
|
|
505
|
|
|
506 static void
|
|
|
507 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
508 {
|
|
|
509 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
510 }
|
|
|
511
|
|
|
512
|
|
|
513 static void
|
|
|
514 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
515 ngx_event_t *ev)
|
|
28
|
516 {
|
|
|
517 int n;
|
|
|
518 char buf[1];
|
|
126
|
519 ngx_err_t err;
|
|
28
|
520 ngx_connection_t *c;
|
|
|
521 ngx_http_upstream_t *u;
|
|
|
522
|
|
76
|
523 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
524 "http upstream check client, write event:%d, \"%V\"",
|
|
|
525 ev->write, &r->uri);
|
|
28
|
526
|
|
58
|
527 c = r->connection;
|
|
32
|
528 u = r->upstream;
|
|
|
529
|
|
132
|
530 if (c->error) {
|
|
76
|
531 ngx_http_upstream_finalize_request(r, u,
|
|
|
532 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
533 return;
|
|
|
534 }
|
|
|
535
|
|
32
|
536 if (u->peer.connection == NULL) {
|
|
|
537 return;
|
|
|
538 }
|
|
|
539
|
|
28
|
540 #if (NGX_HAVE_KQUEUE)
|
|
|
541
|
|
|
542 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
543
|
|
|
544 if (!ev->pending_eof) {
|
|
|
545 return;
|
|
|
546 }
|
|
|
547
|
|
|
548 ev->eof = 1;
|
|
132
|
549 c->error = 1;
|
|
28
|
550
|
|
|
551 if (ev->kq_errno) {
|
|
|
552 ev->error = 1;
|
|
|
553 }
|
|
|
554
|
|
340
|
555 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
556 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
557 "kevent() reported that client closed prematurely "
|
|
|
558 "connection, so upstream connection is closed too");
|
|
28
|
559 ngx_http_upstream_finalize_request(r, u,
|
|
|
560 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
561 return;
|
|
|
562 }
|
|
|
563
|
|
|
564 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
565 "kevent() reported that client closed "
|
|
|
566 "prematurely connection");
|
|
|
567
|
|
|
568 if (u->peer.connection == NULL) {
|
|
|
569 ngx_http_upstream_finalize_request(r, u,
|
|
|
570 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
571 return;
|
|
|
572 }
|
|
|
573
|
|
|
574 return;
|
|
|
575 }
|
|
|
576
|
|
|
577 #endif
|
|
|
578
|
|
|
579 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
580
|
|
|
581 err = ngx_socket_errno;
|
|
|
582
|
|
286
|
583 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
584 "http upstream recv(): %d", n);
|
|
|
585
|
|
28
|
586 /*
|
|
|
587 * we do not need to disable the write event because
|
|
|
588 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
589 */
|
|
|
590
|
|
|
591 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
592 return;
|
|
|
593 }
|
|
|
594
|
|
|
595 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
596 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
597 ngx_http_upstream_finalize_request(r, u,
|
|
|
598 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
599 return;
|
|
|
600 }
|
|
|
601 }
|
|
|
602
|
|
|
603 if (n > 0) {
|
|
|
604 return;
|
|
|
605 }
|
|
|
606
|
|
|
607 if (n == -1) {
|
|
|
608 if (err == NGX_EAGAIN) {
|
|
|
609 return;
|
|
|
610 }
|
|
|
611
|
|
|
612 ev->error = 1;
|
|
|
613
|
|
32
|
614 } else { /* n == 0 */
|
|
28
|
615 err = 0;
|
|
|
616 }
|
|
|
617
|
|
78
|
618 ev->eof = 1;
|
|
132
|
619 c->error = 1;
|
|
78
|
620
|
|
340
|
621 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
622 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
623 "client closed prematurely connection, "
|
|
|
624 "so upstream connection is closed too");
|
|
|
625 ngx_http_upstream_finalize_request(r, u,
|
|
|
626 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
627 return;
|
|
|
628 }
|
|
|
629
|
|
|
630 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
631 "client closed prematurely connection");
|
|
|
632
|
|
|
633 if (u->peer.connection == NULL) {
|
|
|
634 ngx_http_upstream_finalize_request(r, u,
|
|
|
635 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
636 return;
|
|
|
637 }
|
|
|
638 }
|
|
|
639
|
|
|
640
|
|
36
|
641 static void
|
|
|
642 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
643 {
|
|
140
|
644 ngx_int_t rc;
|
|
214
|
645 ngx_time_t *tp;
|
|
140
|
646 ngx_connection_t *c;
|
|
28
|
647
|
|
32
|
648 r->connection->log->action = "connecting to upstream";
|
|
28
|
649
|
|
|
650 r->connection->single_connection = 0;
|
|
|
651
|
|
262
|
652 if (u->state && u->state->response_sec) {
|
|
214
|
653 tp = ngx_timeofday();
|
|
262
|
654 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
655 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
656 }
|
|
|
657
|
|
296
|
658 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
659 if (u->state == NULL) {
|
|
|
660 ngx_http_upstream_finalize_request(r, u,
|
|
|
661 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
662 return;
|
|
|
663 }
|
|
|
664
|
|
|
665 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
666
|
|
|
667 tp = ngx_timeofday();
|
|
262
|
668 u->state->response_sec = tp->sec;
|
|
|
669 u->state->response_msec = tp->msec;
|
|
214
|
670
|
|
28
|
671 rc = ngx_event_connect_peer(&u->peer);
|
|
|
672
|
|
|
673 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
674 "http upstream connect: %i", rc);
|
|
|
675
|
|
|
676 if (rc == NGX_ERROR) {
|
|
|
677 ngx_http_upstream_finalize_request(r, u,
|
|
|
678 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
679 return;
|
|
|
680 }
|
|
|
681
|
|
356
|
682 u->state->peer = u->peer.name;
|
|
|
683
|
|
92
|
684 if (rc == NGX_BUSY) {
|
|
|
685 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
686 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
687 return;
|
|
92
|
688 }
|
|
|
689
|
|
326
|
690 if (rc == NGX_DECLINED) {
|
|
28
|
691 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
692 return;
|
|
|
693 }
|
|
|
694
|
|
126
|
695 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
696
|
|
28
|
697 c = u->peer.connection;
|
|
|
698
|
|
|
699 c->data = r;
|
|
140
|
700
|
|
58
|
701 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
702 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
703
|
|
326
|
704 c->sendfile &= r->connection->sendfile;
|
|
28
|
705
|
|
|
706 c->pool = r->pool;
|
|
|
707 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
708
|
|
|
709 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
710
|
|
|
711 u->writer.out = NULL;
|
|
|
712 u->writer.last = &u->writer.out;
|
|
|
713 u->writer.connection = c;
|
|
|
714 u->writer.limit = 0;
|
|
|
715
|
|
|
716 if (u->request_sent) {
|
|
58
|
717 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
718 ngx_http_upstream_finalize_request(r, u,
|
|
|
719 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
720 return;
|
|
|
721 }
|
|
28
|
722 }
|
|
|
723
|
|
276
|
724 if (r->request_body
|
|
|
725 && r->request_body->buf
|
|
|
726 && r->request_body->temp_file
|
|
|
727 && r == r->main)
|
|
|
728 {
|
|
122
|
729 /*
|
|
|
730 * the r->request_body->buf can be reused for one request only,
|
|
|
731 * the subrequests should allocate their own temporay bufs
|
|
|
732 */
|
|
|
733
|
|
|
734 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
735 if (u->output.free == NULL) {
|
|
|
736 ngx_http_upstream_finalize_request(r, u,
|
|
|
737 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
738 return;
|
|
28
|
739 }
|
|
122
|
740
|
|
|
741 u->output.free->buf = r->request_body->buf;
|
|
|
742 u->output.free->next = NULL;
|
|
|
743 u->output.allocated = 1;
|
|
|
744
|
|
|
745 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
746 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
747 r->request_body->buf->tag = u->output.tag;
|
|
28
|
748 }
|
|
|
749
|
|
|
750 u->request_sent = 0;
|
|
|
751
|
|
|
752 if (rc == NGX_AGAIN) {
|
|
|
753 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
754 return;
|
|
|
755 }
|
|
|
756
|
|
126
|
757 #if (NGX_HTTP_SSL)
|
|
|
758
|
|
348
|
759 if (u->ssl && c->ssl == NULL) {
|
|
140
|
760 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
761 return;
|
|
|
762 }
|
|
|
763
|
|
|
764 #endif
|
|
|
765
|
|
28
|
766 ngx_http_upstream_send_request(r, u);
|
|
|
767 }
|
|
|
768
|
|
|
769
|
|
126
|
770 #if (NGX_HTTP_SSL)
|
|
|
771
|
|
|
772 static void
|
|
140
|
773 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
774 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
775 {
|
|
260
|
776 ngx_int_t rc;
|
|
140
|
777
|
|
|
778 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
779 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
780 == NGX_ERROR)
|
|
|
781 {
|
|
|
782 ngx_http_upstream_finalize_request(r, u,
|
|
|
783 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
784 return;
|
|
|
785 }
|
|
|
786
|
|
|
787 c->sendfile = 0;
|
|
168
|
788 u->output.sendfile = 0;
|
|
140
|
789
|
|
318
|
790 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
140
|
791 ngx_http_upstream_finalize_request(r, u,
|
|
|
792 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
793 return;
|
|
|
794 }
|
|
|
795
|
|
190
|
796 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
797
|
|
140
|
798 rc = ngx_ssl_handshake(c);
|
|
|
799
|
|
|
800 if (rc == NGX_AGAIN) {
|
|
|
801 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
802 return;
|
|
|
803 }
|
|
|
804
|
|
|
805 ngx_http_upstream_ssl_handshake(c);
|
|
|
806 }
|
|
|
807
|
|
|
808
|
|
|
809 static void
|
|
126
|
810 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
811 {
|
|
|
812 ngx_http_request_t *r;
|
|
|
813 ngx_http_upstream_t *u;
|
|
|
814
|
|
|
815 r = c->data;
|
|
|
816 u = r->upstream;
|
|
|
817
|
|
|
818 if (c->ssl->handshaked) {
|
|
|
819
|
|
260
|
820 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
821
|
|
126
|
822 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
823 c->read->handler = ngx_http_upstream_process_header;
|
|
|
824
|
|
|
825 ngx_http_upstream_send_request(r, u);
|
|
|
826
|
|
|
827 return;
|
|
|
828 }
|
|
|
829
|
|
|
830 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
831
|
|
|
832 }
|
|
|
833
|
|
|
834 #endif
|
|
|
835
|
|
|
836
|
|
58
|
837 static ngx_int_t
|
|
36
|
838 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
839 {
|
|
|
840 ngx_chain_t *cl;
|
|
|
841
|
|
58
|
842 if (u->reinit_request(r) != NGX_OK) {
|
|
|
843 return NGX_ERROR;
|
|
|
844 }
|
|
|
845
|
|
356
|
846 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
847
|
|
|
848 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
849 sizeof(ngx_table_elt_t))
|
|
|
850 != NGX_OK)
|
|
58
|
851 {
|
|
|
852 return NGX_ERROR;
|
|
28
|
853 }
|
|
|
854
|
|
|
855 /* reinit the request chain */
|
|
126
|
856
|
|
58
|
857 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
858 cl->buf->pos = cl->buf->start;
|
|
|
859 cl->buf->file_pos = 0;
|
|
|
860 }
|
|
|
861
|
|
58
|
862 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
863
|
|
122
|
864 if (r->request_body && r->request_body->temp_file
|
|
146
|
865 && r != r->main && u->output.buf)
|
|
122
|
866 {
|
|
|
867 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
868 if (u->output.free == NULL) {
|
|
|
869 return NGX_ERROR;
|
|
58
|
870 }
|
|
122
|
871
|
|
|
872 u->output.free->buf = u->output.buf;
|
|
|
873 u->output.free->next = NULL;
|
|
|
874
|
|
|
875 u->output.buf->pos = u->output.buf->start;
|
|
|
876 u->output.buf->last = u->output.buf->start;
|
|
58
|
877 }
|
|
28
|
878
|
|
|
879 u->output.buf = NULL;
|
|
|
880 u->output.in = NULL;
|
|
|
881 u->output.busy = NULL;
|
|
126
|
882
|
|
130
|
883 /* reinit u->buffer */
|
|
126
|
884
|
|
28
|
885 #if 0
|
|
|
886 if (u->cache) {
|
|
130
|
887 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
888 u->buffer.last = u->buffer.pos;
|
|
28
|
889
|
|
|
890 } else {
|
|
130
|
891 u->buffer.pos = u->buffer.start;
|
|
|
892 u->buffer.last = u->buffer.start;
|
|
28
|
893 }
|
|
|
894 #else
|
|
58
|
895
|
|
130
|
896 u->buffer.pos = u->buffer.start;
|
|
|
897 u->buffer.last = u->buffer.start;
|
|
58
|
898
|
|
28
|
899 #endif
|
|
|
900
|
|
58
|
901 return NGX_OK;
|
|
28
|
902 }
|
|
|
903
|
|
|
904
|
|
36
|
905 static void
|
|
|
906 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
907 {
|
|
294
|
908 ngx_int_t rc;
|
|
32
|
909 ngx_connection_t *c;
|
|
126
|
910
|
|
28
|
911 c = u->peer.connection;
|
|
|
912
|
|
|
913 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
914 "http upstream send request");
|
|
|
915
|
|
294
|
916 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
917 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
918 return;
|
|
28
|
919 }
|
|
|
920
|
|
32
|
921 c->log->action = "sending request to upstream";
|
|
28
|
922
|
|
58
|
923 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
924
|
|
|
925 u->request_sent = 1;
|
|
|
926
|
|
|
927 if (rc == NGX_ERROR) {
|
|
|
928 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
929 return;
|
|
|
930 }
|
|
|
931
|
|
|
932 if (c->write->timer_set) {
|
|
|
933 ngx_del_timer(c->write);
|
|
|
934 }
|
|
|
935
|
|
|
936 if (rc == NGX_AGAIN) {
|
|
|
937 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
938
|
|
|
939 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
940 {
|
|
|
941 ngx_http_upstream_finalize_request(r, u,
|
|
|
942 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
943 return;
|
|
|
944 }
|
|
|
945
|
|
|
946 return;
|
|
|
947 }
|
|
|
948
|
|
|
949 /* rc == NGX_OK */
|
|
|
950
|
|
|
951 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
952 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
953 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
954 ngx_tcp_push_n " failed");
|
|
|
955 ngx_http_upstream_finalize_request(r, u,
|
|
|
956 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
957 return;
|
|
28
|
958 }
|
|
|
959
|
|
|
960 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
961 }
|
|
126
|
962
|
|
28
|
963 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
964
|
|
|
965 #if 1
|
|
|
966 if (c->read->ready) {
|
|
126
|
967
|
|
28
|
968 /* post aio operation */
|
|
|
969
|
|
|
970 /*
|
|
|
971 * TODO comment
|
|
|
972 * although we can post aio operation just in the end
|
|
|
973 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
974 * it's better to do here because we postpone header buffer allocation
|
|
|
975 */
|
|
|
976
|
|
|
977 ngx_http_upstream_process_header(c->read);
|
|
|
978 return;
|
|
|
979 }
|
|
|
980 #endif
|
|
|
981
|
|
58
|
982 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
983
|
|
58
|
984 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
985 ngx_http_upstream_finalize_request(r, u,
|
|
|
986 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
987 return;
|
|
|
988 }
|
|
|
989 }
|
|
|
990
|
|
|
991
|
|
36
|
992 static void
|
|
|
993 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
994 {
|
|
|
995 ngx_connection_t *c;
|
|
|
996 ngx_http_request_t *r;
|
|
|
997 ngx_http_upstream_t *u;
|
|
|
998
|
|
|
999 c = wev->data;
|
|
|
1000 r = c->data;
|
|
|
1001 u = r->upstream;
|
|
|
1002
|
|
|
1003 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1004 "http upstream send request handler");
|
|
|
1005
|
|
|
1006 if (wev->timedout) {
|
|
|
1007 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1008 return;
|
|
|
1009 }
|
|
|
1010
|
|
140
|
1011 #if (NGX_HTTP_SSL)
|
|
|
1012
|
|
348
|
1013 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1014 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1015 return;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 #endif
|
|
|
1019
|
|
200
|
1020 if (u->header_sent) {
|
|
|
1021 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
1022
|
|
|
1023 (void) ngx_handle_write_event(wev, 0);
|
|
|
1024
|
|
|
1025 return;
|
|
|
1026 }
|
|
|
1027
|
|
28
|
1028 ngx_http_upstream_send_request(r, u);
|
|
|
1029 }
|
|
|
1030
|
|
|
1031
|
|
36
|
1032 static void
|
|
|
1033 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
1034 {
|
|
64
|
1035 ssize_t n;
|
|
|
1036 ngx_int_t rc;
|
|
122
|
1037 ngx_str_t *uri, args;
|
|
198
|
1038 ngx_uint_t i, flags;
|
|
64
|
1039 ngx_list_part_t *part;
|
|
|
1040 ngx_table_elt_t *h;
|
|
|
1041 ngx_connection_t *c;
|
|
|
1042 ngx_http_request_t *r;
|
|
|
1043 ngx_http_upstream_t *u;
|
|
|
1044 ngx_http_err_page_t *err_page;
|
|
|
1045 ngx_http_core_loc_conf_t *clcf;
|
|
|
1046 ngx_http_upstream_header_t *hh;
|
|
|
1047 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1048
|
|
|
1049 c = rev->data;
|
|
|
1050 r = c->data;
|
|
|
1051 u = r->upstream;
|
|
|
1052
|
|
|
1053 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
1054 "http upstream process header");
|
|
28
|
1055
|
|
32
|
1056 c->log->action = "reading response header from upstream";
|
|
28
|
1057
|
|
|
1058 if (rev->timedout) {
|
|
|
1059 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1060 return;
|
|
|
1061 }
|
|
126
|
1062
|
|
294
|
1063 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1064 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1065 return;
|
|
|
1066 }
|
|
|
1067
|
|
130
|
1068 if (u->buffer.start == NULL) {
|
|
|
1069 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1070 if (u->buffer.start == NULL) {
|
|
28
|
1071 ngx_http_upstream_finalize_request(r, u,
|
|
|
1072 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1073 return;
|
|
|
1074 }
|
|
|
1075
|
|
130
|
1076 u->buffer.pos = u->buffer.start;
|
|
|
1077 u->buffer.last = u->buffer.start;
|
|
|
1078 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1079 u->buffer.temporary = 1;
|
|
|
1080
|
|
|
1081 u->buffer.tag = u->output.tag;
|
|
28
|
1082
|
|
356
|
1083 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1084 sizeof(ngx_table_elt_t))
|
|
|
1085 != NGX_OK)
|
|
58
|
1086 {
|
|
|
1087 ngx_http_upstream_finalize_request(r, u,
|
|
|
1088 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1089 return;
|
|
|
1090 }
|
|
|
1091
|
|
28
|
1092 #if 0
|
|
|
1093 if (u->cache) {
|
|
130
|
1094 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1095 u->buffer.last = u->buffer.pos;
|
|
28
|
1096 }
|
|
|
1097 #endif
|
|
|
1098 }
|
|
|
1099
|
|
340
|
1100 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
28
|
1101
|
|
|
1102 if (n == NGX_AGAIN) {
|
|
|
1103 #if 0
|
|
|
1104 ngx_add_timer(rev, u->read_timeout);
|
|
|
1105 #endif
|
|
|
1106
|
|
|
1107 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1108 ngx_http_upstream_finalize_request(r, u,
|
|
|
1109 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1110 return;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 return;
|
|
|
1114 }
|
|
|
1115
|
|
|
1116 if (n == 0) {
|
|
|
1117 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1118 "upstream prematurely closed connection");
|
|
|
1119 }
|
|
|
1120
|
|
|
1121 if (n == NGX_ERROR || n == 0) {
|
|
|
1122 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1123 return;
|
|
|
1124 }
|
|
|
1125
|
|
130
|
1126 u->buffer.last += n;
|
|
28
|
1127
|
|
|
1128 #if 0
|
|
|
1129 u->valid_header_in = 0;
|
|
|
1130
|
|
|
1131 u->peer.cached = 0;
|
|
|
1132 #endif
|
|
|
1133
|
|
|
1134 rc = u->process_header(r);
|
|
|
1135
|
|
|
1136 if (rc == NGX_AGAIN) {
|
|
|
1137 #if 0
|
|
|
1138 ngx_add_timer(rev, u->read_timeout);
|
|
|
1139 #endif
|
|
|
1140
|
|
130
|
1141 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1142 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1143 "upstream sent too big header");
|
|
|
1144
|
|
|
1145 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1146 return;
|
|
|
1147 }
|
|
|
1148
|
|
|
1149 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1150 ngx_http_upstream_finalize_request(r, u,
|
|
|
1151 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1152 return;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 return;
|
|
|
1156 }
|
|
|
1157
|
|
|
1158 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1159 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1160 return;
|
|
|
1161 }
|
|
|
1162
|
|
356
|
1163 if (rc == NGX_ERROR) {
|
|
28
|
1164 ngx_http_upstream_finalize_request(r, u,
|
|
|
1165 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1166 return;
|
|
|
1167 }
|
|
|
1168
|
|
|
1169 /* rc == NGX_OK */
|
|
|
1170
|
|
248
|
1171 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1172 && r->subrequest_in_memory)
|
|
|
1173 {
|
|
|
1174 u->buffer.last = u->buffer.pos;
|
|
|
1175 }
|
|
|
1176
|
|
78
|
1177 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1178
|
|
|
1179 if (u->peer.tries > 1
|
|
|
1180 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1181 {
|
|
|
1182 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1183 return;
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 #if (NGX_HTTP_CACHE)
|
|
|
1187
|
|
|
1188 if (u->peer.tries == 0
|
|
|
1189 && u->stale
|
|
|
1190 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1191 {
|
|
|
1192 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1193 ngx_http_send_cached_response(r));
|
|
58
|
1194 return;
|
|
|
1195 }
|
|
|
1196
|
|
|
1197 #endif
|
|
|
1198 }
|
|
|
1199
|
|
146
|
1200 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1201
|
|
|
1202 if (u->peer.tries > 1
|
|
|
1203 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1204 {
|
|
|
1205 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1206 return;
|
|
|
1207 }
|
|
|
1208
|
|
224
|
1209 if (u->conf->intercept_404) {
|
|
|
1210 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1211 return;
|
|
|
1212 }
|
|
58
|
1213 }
|
|
|
1214
|
|
|
1215
|
|
78
|
1216 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1217 && u->conf->intercept_errors)
|
|
36
|
1218 {
|
|
|
1219 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1220
|
|
|
1221 if (clcf->error_pages) {
|
|
|
1222
|
|
|
1223 err_page = clcf->error_pages->elts;
|
|
|
1224 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1225 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1226
|
|
|
1227 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1228
|
|
|
1229 r->headers_out.www_authenticate =
|
|
|
1230 ngx_list_push(&r->headers_out.headers);
|
|
|
1231
|
|
|
1232 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1233 ngx_http_upstream_finalize_request(r, u,
|
|
|
1234 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1235 return;
|
|
|
1236 }
|
|
|
1237
|
|
126
|
1238 *r->headers_out.www_authenticate =
|
|
78
|
1239 *u->headers_in.www_authenticate;
|
|
|
1240 }
|
|
|
1241
|
|
36
|
1242 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1243 u->headers_in.status_n);
|
|
36
|
1244 return;
|
|
|
1245 }
|
|
|
1246 }
|
|
|
1247 }
|
|
|
1248 }
|
|
|
1249
|
|
230
|
1250 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1251
|
|
356
|
1252 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1253
|
|
64
|
1254 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1255
|
|
356
|
1256 part = &u->headers_in.headers.part;
|
|
64
|
1257 h = part->elts;
|
|
|
1258
|
|
|
1259 for (i = 0; /* void */; i++) {
|
|
|
1260
|
|
|
1261 if (i >= part->nelts) {
|
|
|
1262 if (part->next == NULL) {
|
|
|
1263 break;
|
|
|
1264 }
|
|
126
|
1265
|
|
64
|
1266 part = part->next;
|
|
|
1267 h = part->elts;
|
|
|
1268 i = 0;
|
|
|
1269 }
|
|
|
1270
|
|
198
|
1271 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1272 h[i].lowcase_key, h[i].key.len);
|
|
|
1273
|
|
|
1274 if (hh && hh->redirect) {
|
|
|
1275 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1276 ngx_http_finalize_request(r,
|
|
244
|
1277 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1278 return;
|
|
|
1279 }
|
|
|
1280 }
|
|
|
1281 }
|
|
|
1282
|
|
356
|
1283 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1284 args.len = 0;
|
|
|
1285 args.data = NULL;
|
|
|
1286 flags = 0;
|
|
|
1287
|
|
|
1288 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1289 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1290 return;
|
|
|
1291 }
|
|
|
1292
|
|
|
1293 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1294 r->zero_in_uri = 1;
|
|
|
1295 }
|
|
|
1296
|
|
202
|
1297 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1298 r->method = NGX_HTTP_GET;
|
|
|
1299 }
|
|
|
1300
|
|
122
|
1301 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1302 return;
|
|
|
1303 }
|
|
|
1304
|
|
356
|
1305 part = &u->headers_in.headers.part;
|
|
58
|
1306 h = part->elts;
|
|
|
1307
|
|
|
1308 for (i = 0; /* void */; i++) {
|
|
28
|
1309
|
|
58
|
1310 if (i >= part->nelts) {
|
|
|
1311 if (part->next == NULL) {
|
|
|
1312 break;
|
|
|
1313 }
|
|
126
|
1314
|
|
58
|
1315 part = part->next;
|
|
|
1316 h = part->elts;
|
|
|
1317 i = 0;
|
|
|
1318 }
|
|
|
1319
|
|
198
|
1320 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1321 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1322 {
|
|
198
|
1323 continue;
|
|
|
1324 }
|
|
|
1325
|
|
|
1326 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1327 h[i].lowcase_key, h[i].key.len);
|
|
|
1328
|
|
|
1329 if (hh) {
|
|
|
1330 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1331 ngx_http_upstream_finalize_request(r, u,
|
|
|
1332 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1333 return;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 continue;
|
|
|
1337 }
|
|
|
1338
|
|
|
1339 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1340 ngx_http_upstream_finalize_request(r, u,
|
|
|
1341 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1342 return;
|
|
|
1343 }
|
|
|
1344 }
|
|
|
1345
|
|
198
|
1346 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1347 r->headers_out.server->hash = 0;
|
|
|
1348 }
|
|
|
1349
|
|
|
1350 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1351 r->headers_out.date->hash = 0;
|
|
|
1352 }
|
|
|
1353
|
|
78
|
1354 r->headers_out.status = u->headers_in.status_n;
|
|
|
1355 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1356
|
|
364
|
1357 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1358
|
|
130
|
1359 if (r->headers_out.content_length_n != -1) {
|
|
|
1360 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1361
|
|
|
1362 } else {
|
|
|
1363 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1364 }
|
|
|
1365
|
|
248
|
1366 if (!r->subrequest_in_memory) {
|
|
|
1367 ngx_http_upstream_send_response(r, u);
|
|
|
1368 return;
|
|
|
1369 }
|
|
|
1370
|
|
|
1371 /* subrequest content in memory */
|
|
|
1372
|
|
|
1373 if (u->input_filter == NULL) {
|
|
|
1374 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1375 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1376 u->input_filter_ctx = r;
|
|
|
1377 }
|
|
|
1378
|
|
|
1379 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1380 ngx_http_upstream_finalize_request(r, u,
|
|
|
1381 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1382 return;
|
|
|
1383 }
|
|
|
1384
|
|
|
1385 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1386 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1387 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1388 return;
|
|
|
1389 }
|
|
|
1390
|
|
|
1391 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1392 return;
|
|
|
1393 }
|
|
|
1394
|
|
|
1395 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1396
|
|
|
1397 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1398 }
|
|
|
1399
|
|
|
1400
|
|
294
|
1401 static ngx_int_t
|
|
|
1402 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1403 {
|
|
|
1404 int err;
|
|
|
1405 socklen_t len;
|
|
|
1406
|
|
|
1407 #if (NGX_HAVE_KQUEUE)
|
|
|
1408
|
|
|
1409 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1410 if (c->write->pending_eof) {
|
|
336
|
1411 c->log->action = "connecting to upstream";
|
|
296
|
1412 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1413 "kevent() reported that connect() failed");
|
|
|
1414 return NGX_ERROR;
|
|
|
1415 }
|
|
294
|
1416
|
|
|
1417 } else
|
|
|
1418 #endif
|
|
|
1419 {
|
|
296
|
1420 err = 0;
|
|
|
1421 len = sizeof(int);
|
|
|
1422
|
|
|
1423 /*
|
|
|
1424 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1425 * Solaris returns -1 and sets errno
|
|
|
1426 */
|
|
|
1427
|
|
|
1428 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1429 == -1)
|
|
|
1430 {
|
|
|
1431 err = ngx_errno;
|
|
|
1432 }
|
|
|
1433
|
|
|
1434 if (err) {
|
|
336
|
1435 c->log->action = "connecting to upstream";
|
|
296
|
1436 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1437 return NGX_ERROR;
|
|
|
1438 }
|
|
294
|
1439 }
|
|
|
1440
|
|
|
1441 return NGX_OK;
|
|
|
1442 }
|
|
|
1443
|
|
|
1444
|
|
248
|
1445 static void
|
|
|
1446 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1447 {
|
|
|
1448 size_t size;
|
|
|
1449 ssize_t n;
|
|
|
1450 ngx_buf_t *b;
|
|
|
1451 ngx_connection_t *c;
|
|
|
1452 ngx_http_request_t *r;
|
|
|
1453 ngx_http_upstream_t *u;
|
|
|
1454
|
|
|
1455 c = rev->data;
|
|
|
1456 r = c->data;
|
|
|
1457 u = r->upstream;
|
|
|
1458
|
|
|
1459 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1460 "http upstream process body on memory");
|
|
|
1461
|
|
|
1462 if (rev->timedout) {
|
|
|
1463 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1464 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1465 return;
|
|
|
1466 }
|
|
|
1467
|
|
|
1468 b = &u->buffer;
|
|
|
1469
|
|
|
1470 for ( ;; ) {
|
|
|
1471
|
|
|
1472 size = b->end - b->last;
|
|
|
1473
|
|
|
1474 if (size == 0) {
|
|
|
1475 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1476 "upstream buffer is too small to read repsonse");
|
|
|
1477 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1478 return;
|
|
|
1479 }
|
|
|
1480
|
|
|
1481 n = c->recv(c, b->last, size);
|
|
|
1482
|
|
|
1483 if (n == NGX_AGAIN) {
|
|
|
1484 break;
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 if (n == 0 || n == NGX_ERROR) {
|
|
|
1488 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1489 return;
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1493 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1494 return;
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 if (!rev->ready) {
|
|
|
1498 break;
|
|
|
1499 }
|
|
|
1500 }
|
|
|
1501
|
|
|
1502 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1503 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1504 return;
|
|
|
1505 }
|
|
|
1506
|
|
|
1507 if (rev->active) {
|
|
|
1508 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1509
|
|
|
1510 } else if (rev->timer_set) {
|
|
|
1511 ngx_del_timer(rev);
|
|
|
1512 }
|
|
230
|
1513 }
|
|
|
1514
|
|
|
1515
|
|
|
1516 static void
|
|
|
1517 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1518 {
|
|
|
1519 int tcp_nodelay;
|
|
|
1520 ssize_t size;
|
|
|
1521 ngx_int_t rc;
|
|
|
1522 ngx_event_pipe_t *p;
|
|
|
1523 ngx_connection_t *c;
|
|
|
1524 ngx_pool_cleanup_t *cl;
|
|
|
1525 ngx_pool_cleanup_file_t *clf;
|
|
|
1526 ngx_http_core_loc_conf_t *clcf;
|
|
|
1527
|
|
58
|
1528 rc = ngx_http_send_header(r);
|
|
28
|
1529
|
|
274
|
1530 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1531 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1532 return;
|
|
|
1533 }
|
|
|
1534
|
|
|
1535 u->header_sent = 1;
|
|
|
1536
|
|
122
|
1537 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1538 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1539 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1540 clf = cl->data;
|
|
|
1541
|
|
|
1542 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1543 cl->handler(clf);
|
|
|
1544 cl->handler = NULL;
|
|
208
|
1545 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1546 break;
|
|
|
1547 }
|
|
|
1548 }
|
|
|
1549 }
|
|
|
1550 }
|
|
|
1551
|
|
132
|
1552 c = r->connection;
|
|
|
1553
|
|
130
|
1554 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1555
|
|
198
|
1556 if (!u->buffering) {
|
|
130
|
1557
|
|
|
1558 if (u->input_filter == NULL) {
|
|
|
1559 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1560 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1561 u->input_filter_ctx = r;
|
|
|
1562 }
|
|
|
1563
|
|
|
1564 u->peer.connection->read->handler =
|
|
|
1565 ngx_http_upstream_process_non_buffered_body;
|
|
|
1566 r->write_event_handler =
|
|
|
1567 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1568
|
|
|
1569 r->limit_rate = 0;
|
|
|
1570
|
|
|
1571 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1572 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1573 return;
|
|
|
1574 }
|
|
|
1575
|
|
132
|
1576 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1577 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1578
|
|
|
1579 tcp_nodelay = 1;
|
|
|
1580
|
|
|
1581 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1582 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1583 {
|
|
|
1584 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1585 "setsockopt(TCP_NODELAY) failed");
|
|
|
1586 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1587 return;
|
|
|
1588 }
|
|
|
1589
|
|
|
1590 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1591 }
|
|
|
1592
|
|
130
|
1593 size = u->buffer.last - u->buffer.pos;
|
|
|
1594
|
|
|
1595 if (size) {
|
|
|
1596 u->buffer.last = u->buffer.pos;
|
|
|
1597
|
|
|
1598 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1599 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1600 return;
|
|
|
1601 }
|
|
|
1602
|
|
132
|
1603 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1604
|
|
|
1605 } else {
|
|
|
1606 u->buffer.pos = u->buffer.start;
|
|
|
1607 u->buffer.last = u->buffer.start;
|
|
|
1608
|
|
|
1609 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1610 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1611 return;
|
|
|
1612 }
|
|
336
|
1613
|
|
|
1614 if (u->peer.connection->read->ready) {
|
|
|
1615 ngx_http_upstream_process_non_buffered_body(
|
|
|
1616 u->peer.connection->read);
|
|
|
1617 }
|
|
130
|
1618 }
|
|
|
1619
|
|
|
1620 return;
|
|
|
1621 }
|
|
|
1622
|
|
28
|
1623 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1624
|
|
|
1625 #if 0
|
|
|
1626
|
|
|
1627 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1628 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1629 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1630 ngx_close_file_n " \"%s\" failed",
|
|
|
1631 u->cache->ctx.file.name.data);
|
|
|
1632 }
|
|
|
1633 }
|
|
|
1634
|
|
340
|
1635 if (u->cacheable) {
|
|
130
|
1636 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1637
|
|
|
1638 header->expires = u->cache->ctx.expires;
|
|
|
1639 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1640 header->date = u->cache->ctx.date;
|
|
|
1641 header->length = r->headers_out.content_length_n;
|
|
|
1642 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1643
|
|
|
1644 header->key_len = u->cache->ctx.key0.len;
|
|
|
1645 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1646 header->key[header->key_len] = LF;
|
|
|
1647 }
|
|
|
1648
|
|
|
1649 #endif
|
|
|
1650
|
|
130
|
1651 p = u->pipe;
|
|
28
|
1652
|
|
|
1653 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1654 p->output_ctx = r;
|
|
|
1655 p->tag = u->output.tag;
|
|
126
|
1656 p->bufs = u->conf->bufs;
|
|
28
|
1657 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1658 p->upstream = u->peer.connection;
|
|
132
|
1659 p->downstream = c;
|
|
28
|
1660 p->pool = r->pool;
|
|
132
|
1661 p->log = c->log;
|
|
126
|
1662
|
|
340
|
1663 p->cacheable = u->cacheable || u->store;
|
|
28
|
1664
|
|
50
|
1665 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1666 if (p->temp_file == NULL) {
|
|
28
|
1667 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1668 return;
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1672 p->temp_file->file.log = c->log;
|
|
28
|
1673 p->temp_file->path = u->conf->temp_path;
|
|
|
1674 p->temp_file->pool = r->pool;
|
|
126
|
1675
|
|
340
|
1676 if (u->cacheable || u->store) {
|
|
28
|
1677 p->temp_file->persistent = 1;
|
|
318
|
1678
|
|
28
|
1679 } else {
|
|
216
|
1680 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1681 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1682 "to a temporary file";
|
|
|
1683 }
|
|
|
1684
|
|
|
1685 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1686 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1687
|
|
50
|
1688 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1689 if (p->preread_bufs == NULL) {
|
|
28
|
1690 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1691 return;
|
|
|
1692 }
|
|
318
|
1693
|
|
130
|
1694 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1695 p->preread_bufs->next = NULL;
|
|
130
|
1696 u->buffer.recycled = 1;
|
|
|
1697
|
|
|
1698 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1699
|
|
340
|
1700 if (u->cacheable) {
|
|
318
|
1701
|
|
28
|
1702 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1703 if (p->buf_to_file == NULL) {
|
|
|
1704 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1705 return;
|
|
|
1706 }
|
|
318
|
1707
|
|
130
|
1708 p->buf_to_file->pos = u->buffer.start;
|
|
|
1709 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1710 p->buf_to_file->temporary = 1;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1714 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1715 p->single_buf = 1;
|
|
|
1716 }
|
|
|
1717
|
|
|
1718 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1719 p->free_bufs = 1;
|
|
|
1720
|
|
|
1721 /*
|
|
130
|
1722 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1723 * as though these bytes were read
|
|
|
1724 */
|
|
130
|
1725 u->buffer.last = u->buffer.pos;
|
|
28
|
1726
|
|
|
1727 if (u->conf->cyclic_temp_file) {
|
|
|
1728
|
|
|
1729 /*
|
|
|
1730 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1731 * because the writing a new data may interfere with sendfile()
|
|
|
1732 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1733 */
|
|
|
1734
|
|
|
1735 p->cyclic_temp_file = 1;
|
|
132
|
1736 c->sendfile = 0;
|
|
28
|
1737
|
|
|
1738 } else {
|
|
|
1739 p->cyclic_temp_file = 0;
|
|
|
1740 }
|
|
|
1741
|
|
|
1742 p->read_timeout = u->conf->read_timeout;
|
|
|
1743 p->send_timeout = clcf->send_timeout;
|
|
|
1744 p->send_lowat = clcf->send_lowat;
|
|
|
1745
|
|
58
|
1746 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1747 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1748
|
|
|
1749 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1750 }
|
|
|
1751
|
|
|
1752
|
|
36
|
1753 static void
|
|
130
|
1754 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1755 {
|
|
|
1756 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1757 }
|
|
|
1758
|
|
|
1759
|
|
|
1760 static void
|
|
|
1761 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1762 {
|
|
|
1763 size_t size;
|
|
|
1764 ssize_t n;
|
|
|
1765 ngx_buf_t *b;
|
|
132
|
1766 ngx_int_t rc;
|
|
130
|
1767 ngx_uint_t do_write;
|
|
260
|
1768 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1769 ngx_http_request_t *r;
|
|
|
1770 ngx_http_upstream_t *u;
|
|
|
1771 ngx_http_core_loc_conf_t *clcf;
|
|
|
1772
|
|
|
1773 c = ev->data;
|
|
244
|
1774 r = c->data;
|
|
|
1775 u = r->upstream;
|
|
130
|
1776
|
|
|
1777 if (ev->write) {
|
|
|
1778 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1779 "http upstream process non buffered downstream");
|
|
|
1780 c->log->action = "sending to client";
|
|
|
1781
|
|
|
1782 } else {
|
|
|
1783 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1784 "http upstream process non buffered upstream");
|
|
|
1785 c->log->action = "reading upstream";
|
|
|
1786 }
|
|
|
1787
|
|
|
1788 if (ev->timedout) {
|
|
|
1789 if (ev->write) {
|
|
|
1790 c->timedout = 1;
|
|
160
|
1791 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1792
|
|
130
|
1793 } else {
|
|
160
|
1794 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1795 }
|
|
244
|
1796
|
|
|
1797 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1798 return;
|
|
130
|
1799 }
|
|
|
1800
|
|
260
|
1801 downstream = r->connection;
|
|
|
1802 upstream = u->peer.connection;
|
|
130
|
1803
|
|
|
1804 b = &u->buffer;
|
|
|
1805
|
|
|
1806 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1807
|
|
206
|
1808 do_write = ev->write || u->length == 0;
|
|
130
|
1809
|
|
|
1810 for ( ;; ) {
|
|
|
1811
|
|
|
1812 if (do_write) {
|
|
|
1813
|
|
|
1814 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1815 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1816
|
|
260
|
1817 if (downstream->destroyed) {
|
|
132
|
1818 return;
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 if (rc == NGX_ERROR) {
|
|
130
|
1822 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1823 return;
|
|
|
1824 }
|
|
|
1825
|
|
|
1826 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1827 &u->out_bufs, u->output.tag);
|
|
|
1828 }
|
|
|
1829
|
|
|
1830 if (u->busy_bufs == NULL) {
|
|
|
1831
|
|
|
1832 if (u->length == 0
|
|
260
|
1833 || upstream->read->eof
|
|
|
1834 || upstream->read->error)
|
|
130
|
1835 {
|
|
|
1836 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1837 return;
|
|
|
1838 }
|
|
|
1839
|
|
|
1840 b->pos = b->start;
|
|
|
1841 b->last = b->start;
|
|
|
1842 }
|
|
|
1843 }
|
|
|
1844
|
|
|
1845 size = b->end - b->last;
|
|
|
1846
|
|
|
1847 if (size > u->length) {
|
|
|
1848 size = u->length;
|
|
|
1849 }
|
|
|
1850
|
|
260
|
1851 if (size && upstream->read->ready) {
|
|
|
1852
|
|
|
1853 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1854
|
|
|
1855 if (n == NGX_AGAIN) {
|
|
|
1856 break;
|
|
|
1857 }
|
|
|
1858
|
|
|
1859 if (n > 0) {
|
|
|
1860 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1861 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1862 return;
|
|
|
1863 }
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 do_write = 1;
|
|
|
1867
|
|
|
1868 continue;
|
|
|
1869 }
|
|
|
1870
|
|
|
1871 break;
|
|
|
1872 }
|
|
|
1873
|
|
260
|
1874 if (downstream->data == r) {
|
|
|
1875 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1876 == NGX_ERROR)
|
|
|
1877 {
|
|
|
1878 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1879 return;
|
|
|
1880 }
|
|
130
|
1881 }
|
|
|
1882
|
|
276
|
1883 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1884 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1885
|
|
|
1886 } else if (downstream->write->timer_set) {
|
|
|
1887 ngx_del_timer(downstream->write);
|
|
130
|
1888 }
|
|
|
1889
|
|
260
|
1890 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1891 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1892 return;
|
|
|
1893 }
|
|
|
1894
|
|
276
|
1895 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1896 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1897
|
|
|
1898 } else if (upstream->read->timer_set) {
|
|
|
1899 ngx_del_timer(upstream->read);
|
|
130
|
1900 }
|
|
|
1901 }
|
|
|
1902
|
|
|
1903
|
|
|
1904 static ngx_int_t
|
|
|
1905 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1906 {
|
|
|
1907 return NGX_OK;
|
|
|
1908 }
|
|
|
1909
|
|
|
1910
|
|
|
1911 static ngx_int_t
|
|
|
1912 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1913 {
|
|
|
1914 ngx_http_request_t *r = data;
|
|
|
1915
|
|
|
1916 ngx_buf_t *b;
|
|
|
1917 ngx_chain_t *cl, **ll;
|
|
|
1918 ngx_http_upstream_t *u;
|
|
|
1919
|
|
|
1920 u = r->upstream;
|
|
|
1921
|
|
|
1922 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1923 ll = &cl->next;
|
|
|
1924 }
|
|
|
1925
|
|
|
1926 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1927 if (cl == NULL) {
|
|
|
1928 return NGX_ERROR;
|
|
|
1929 }
|
|
|
1930
|
|
|
1931 *ll = cl;
|
|
|
1932
|
|
|
1933 cl->buf->flush = 1;
|
|
|
1934 cl->buf->memory = 1;
|
|
|
1935
|
|
|
1936 b = &u->buffer;
|
|
|
1937
|
|
|
1938 cl->buf->pos = b->last;
|
|
|
1939 b->last += bytes;
|
|
|
1940 cl->buf->last = b->last;
|
|
366
|
1941 cl->buf->tag = u->output.tag;
|
|
130
|
1942
|
|
|
1943 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1944 return NGX_OK;
|
|
|
1945 }
|
|
|
1946
|
|
|
1947 u->length -= bytes;
|
|
|
1948
|
|
|
1949 return NGX_OK;
|
|
|
1950 }
|
|
|
1951
|
|
|
1952
|
|
|
1953 static void
|
|
58
|
1954 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1955 {
|
|
|
1956 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1957 }
|
|
|
1958
|
|
|
1959
|
|
|
1960 static void
|
|
36
|
1961 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1962 {
|
|
364
|
1963 ngx_temp_file_t *tf;
|
|
58
|
1964 ngx_event_pipe_t *p;
|
|
132
|
1965 ngx_connection_t *c, *downstream;
|
|
284
|
1966 ngx_http_log_ctx_t *ctx;
|
|
28
|
1967 ngx_http_request_t *r;
|
|
|
1968 ngx_http_upstream_t *u;
|
|
|
1969
|
|
|
1970 c = ev->data;
|
|
|
1971 r = c->data;
|
|
|
1972 u = r->upstream;
|
|
132
|
1973 downstream = r->connection;
|
|
28
|
1974
|
|
|
1975 if (ev->write) {
|
|
32
|
1976 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1977 "http upstream process downstream");
|
|
|
1978 c->log->action = "sending to client";
|
|
126
|
1979
|
|
28
|
1980 } else {
|
|
32
|
1981 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1982 "http upstream process upstream");
|
|
|
1983 c->log->action = "reading upstream";
|
|
284
|
1984
|
|
|
1985 ctx = c->log->data;
|
|
|
1986 ctx->current_request = r;
|
|
28
|
1987 }
|
|
126
|
1988
|
|
130
|
1989 p = u->pipe;
|
|
28
|
1990
|
|
|
1991 if (ev->timedout) {
|
|
|
1992 if (ev->write) {
|
|
76
|
1993 if (ev->delayed) {
|
|
|
1994
|
|
|
1995 ev->timedout = 0;
|
|
|
1996 ev->delayed = 0;
|
|
|
1997
|
|
|
1998 if (!ev->ready) {
|
|
|
1999 ngx_add_timer(ev, p->send_timeout);
|
|
|
2000
|
|
|
2001 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
2002 {
|
|
|
2003 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2004 return;
|
|
|
2005 }
|
|
|
2006
|
|
|
2007 return;
|
|
|
2008 }
|
|
|
2009
|
|
|
2010 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2011
|
|
|
2012 if (downstream->destroyed) {
|
|
|
2013 return;
|
|
|
2014 }
|
|
|
2015
|
|
76
|
2016 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2017 return;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 } else {
|
|
|
2021 p->downstream_error = 1;
|
|
126
|
2022 c->timedout = 1;
|
|
160
|
2023 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
2024 }
|
|
28
|
2025
|
|
|
2026 } else {
|
|
126
|
2027 p->upstream_error = 1;
|
|
160
|
2028 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
2029 }
|
|
|
2030
|
|
|
2031 } else {
|
|
76
|
2032 if (ev->write && ev->delayed) {
|
|
|
2033 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2034 "http downstream delayed");
|
|
|
2035
|
|
|
2036 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
2037 return;
|
|
|
2038 }
|
|
|
2039
|
|
|
2040 return;
|
|
|
2041 }
|
|
|
2042
|
|
28
|
2043 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2044
|
|
|
2045 if (downstream->destroyed) {
|
|
|
2046 return;
|
|
|
2047 }
|
|
|
2048
|
|
28
|
2049 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2050 return;
|
|
|
2051 }
|
|
|
2052 }
|
|
126
|
2053
|
|
28
|
2054 if (u->peer.connection) {
|
|
|
2055
|
|
318
|
2056 if (u->store) {
|
|
|
2057
|
|
364
|
2058 tf = u->pipe->temp_file;
|
|
|
2059
|
|
|
2060 if (p->upstream_eof
|
|
|
2061 && u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2062 && (u->headers_in.content_length_n == -1
|
|
|
2063 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2064 {
|
|
318
|
2065 ngx_http_upstream_store(r, u);
|
|
|
2066
|
|
|
2067 } else if ((p->upstream_error
|
|
|
2068 || (p->upstream_eof
|
|
|
2069 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
364
|
2070 && tf->file.fd != NGX_INVALID_FILE)
|
|
318
|
2071 {
|
|
364
|
2072 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2073
|
|
318
|
2074 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2075 ngx_delete_file_n " \"%s\" failed",
|
|
|
2076 u->pipe->temp_file->file.name.data);
|
|
|
2077 }
|
|
|
2078 }
|
|
|
2079 }
|
|
|
2080
|
|
28
|
2081 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2082
|
|
340
|
2083 if (p->upstream_done && u->cacheable) {
|
|
28
|
2084 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2085 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2086 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2087 return;
|
|
|
2088 }
|
|
|
2089
|
|
340
|
2090 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2091
|
|
|
2092 /* TODO: check length & update cache */
|
|
|
2093
|
|
|
2094 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2095 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2096 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2097 return;
|
|
|
2098 }
|
|
|
2099 }
|
|
|
2100
|
|
|
2101 #endif
|
|
|
2102
|
|
|
2103 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
2104 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2105 "http upstream exit: %p", p->out);
|
|
28
|
2106 #if 0
|
|
|
2107 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2108 #endif
|
|
|
2109 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2110 return;
|
|
|
2111 }
|
|
|
2112 }
|
|
|
2113
|
|
|
2114 if (p->downstream_error) {
|
|
32
|
2115 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2116 "http upstream downstream error");
|
|
28
|
2117
|
|
340
|
2118 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2119 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2120 }
|
|
|
2121 }
|
|
|
2122 }
|
|
|
2123
|
|
|
2124
|
|
36
|
2125 static void
|
|
318
|
2126 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2127 {
|
|
370
|
2128 size_t root;
|
|
|
2129 time_t lm;
|
|
|
2130 ngx_str_t path;
|
|
|
2131 ngx_temp_file_t *tf;
|
|
|
2132 ngx_ext_rename_file_t ext;
|
|
318
|
2133
|
|
358
|
2134 tf = u->pipe->temp_file;
|
|
|
2135
|
|
|
2136 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2137
|
|
|
2138 /* create file for empty 200 response */
|
|
|
2139
|
|
|
2140 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2141 if (tf == NULL) {
|
|
|
2142 return;
|
|
|
2143 }
|
|
|
2144
|
|
|
2145 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2146 tf->file.log = r->connection->log;
|
|
|
2147 tf->path = u->conf->temp_path;
|
|
|
2148 tf->pool = r->pool;
|
|
|
2149 tf->persistent = 1;
|
|
|
2150
|
|
|
2151 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2152 tf->persistent, tf->clean, tf->access)
|
|
|
2153 != NGX_OK)
|
|
|
2154 {
|
|
|
2155 return;
|
|
|
2156 }
|
|
|
2157
|
|
|
2158 u->pipe->temp_file = tf;
|
|
|
2159 }
|
|
|
2160
|
|
370
|
2161 ext.access = u->conf->store_access;
|
|
|
2162 ext.time = -1;
|
|
|
2163 ext.create_path = 1;
|
|
|
2164 ext.delete_file = 1;
|
|
|
2165 ext.log = r->connection->log;
|
|
318
|
2166
|
|
356
|
2167 if (u->headers_in.last_modified) {
|
|
|
2168
|
|
370
|
2169 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2170 u->headers_in.last_modified->value.len);
|
|
318
|
2171
|
|
|
2172 if (lm != NGX_ERROR) {
|
|
370
|
2173 ext.time = lm;
|
|
|
2174 ext.fd = tf->file.fd;
|
|
318
|
2175 }
|
|
|
2176 }
|
|
|
2177
|
|
320
|
2178 if (u->conf->store_lengths == NULL) {
|
|
|
2179
|
|
|
2180 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2181
|
|
|
2182 } else {
|
|
|
2183 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2184 u->conf->store_values->elts)
|
|
|
2185 == NULL)
|
|
|
2186 {
|
|
|
2187 return;
|
|
|
2188 }
|
|
|
2189 }
|
|
318
|
2190
|
|
|
2191 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2192 "upstream stores \"%s\" to \"%s\"",
|
|
|
2193 tf->file.name.data, path.data);
|
|
|
2194
|
|
|
2195 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2196 }
|
|
|
2197
|
|
|
2198
|
|
|
2199 static void
|
|
36
|
2200 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2201 {
|
|
|
2202 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2203 "http upstream dummy handler");
|
|
|
2204 }
|
|
|
2205
|
|
|
2206
|
|
36
|
2207 static void
|
|
|
2208 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2209 ngx_uint_t ft_type)
|
|
28
|
2210 {
|
|
260
|
2211 ngx_uint_t status, state;
|
|
28
|
2212
|
|
|
2213 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2214 "http next upstream, %xi", ft_type);
|
|
28
|
2215
|
|
|
2216 #if 0
|
|
|
2217 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2218 #endif
|
|
|
2219
|
|
74
|
2220 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2221 state = NGX_PEER_NEXT;
|
|
74
|
2222 } else {
|
|
260
|
2223 state = NGX_PEER_FAILED;
|
|
28
|
2224 }
|
|
74
|
2225
|
|
326
|
2226 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2227 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2228 }
|
|
74
|
2229
|
|
28
|
2230 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2231 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2232 "upstream timed out");
|
|
|
2233 }
|
|
126
|
2234
|
|
28
|
2235 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2236 status = 0;
|
|
|
2237
|
|
|
2238 } else {
|
|
|
2239 switch(ft_type) {
|
|
|
2240
|
|
|
2241 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2242 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2243 break;
|
|
|
2244
|
|
|
2245 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2246 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2247 break;
|
|
|
2248
|
|
|
2249 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2250 status = NGX_HTTP_NOT_FOUND;
|
|
|
2251 break;
|
|
|
2252
|
|
|
2253 /*
|
|
|
2254 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2255 * never reach here
|
|
|
2256 */
|
|
|
2257
|
|
|
2258 default:
|
|
|
2259 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2260 }
|
|
|
2261 }
|
|
|
2262
|
|
132
|
2263 if (r->connection->error) {
|
|
28
|
2264 ngx_http_upstream_finalize_request(r, u,
|
|
|
2265 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2266 return;
|
|
|
2267 }
|
|
|
2268
|
|
|
2269 if (status) {
|
|
|
2270 u->state->status = status;
|
|
|
2271
|
|
74
|
2272 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2273
|
|
|
2274 #if (NGX_HTTP_CACHE)
|
|
|
2275
|
|
|
2276 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2277 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2278 ngx_http_send_cached_response(r));
|
|
28
|
2279 return;
|
|
|
2280 }
|
|
|
2281
|
|
|
2282 #endif
|
|
|
2283
|
|
|
2284 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2285 return;
|
|
|
2286 }
|
|
|
2287 }
|
|
|
2288
|
|
|
2289 if (u->peer.connection) {
|
|
|
2290 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2291 "close http upstream connection: %d",
|
|
|
2292 u->peer.connection->fd);
|
|
126
|
2293 #if (NGX_HTTP_SSL)
|
|
260
|
2294
|
|
126
|
2295 if (u->peer.connection->ssl) {
|
|
260
|
2296 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2297 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2298
|
|
|
2299 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2300 }
|
|
|
2301 #endif
|
|
260
|
2302
|
|
28
|
2303 ngx_close_connection(u->peer.connection);
|
|
|
2304 }
|
|
|
2305
|
|
|
2306 #if 0
|
|
|
2307 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2308 ngx_http_upstream_busy_lock(p);
|
|
|
2309 return;
|
|
|
2310 }
|
|
|
2311 #endif
|
|
|
2312
|
|
|
2313 ngx_http_upstream_connect(r, u);
|
|
|
2314 }
|
|
|
2315
|
|
|
2316
|
|
36
|
2317 static void
|
|
118
|
2318 ngx_http_upstream_cleanup(void *data)
|
|
|
2319 {
|
|
|
2320 ngx_http_request_t *r = data;
|
|
|
2321
|
|
356
|
2322 ngx_http_upstream_t *u;
|
|
|
2323
|
|
118
|
2324 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2325 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2326
|
|
356
|
2327 u = r->upstream;
|
|
|
2328
|
|
|
2329 if (u->resolved && u->resolved->ctx) {
|
|
|
2330 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2331 }
|
|
|
2332
|
|
356
|
2333 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2334 }
|
|
|
2335
|
|
|
2336
|
|
|
2337 static void
|
|
36
|
2338 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2339 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2340 {
|
|
262
|
2341 ngx_time_t *tp;
|
|
112
|
2342
|
|
32
|
2343 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2344 "finalize http upstream request: %i", rc);
|
|
28
|
2345
|
|
118
|
2346 *u->cleanup = NULL;
|
|
|
2347
|
|
348
|
2348 if (u->state && u->state->response_sec) {
|
|
112
|
2349 tp = ngx_timeofday();
|
|
262
|
2350 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2351 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2352 }
|
|
|
2353
|
|
28
|
2354 u->finalize_request(r, rc);
|
|
|
2355
|
|
348
|
2356 if (u->peer.free) {
|
|
|
2357 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2358 }
|
|
260
|
2359
|
|
28
|
2360 if (u->peer.connection) {
|
|
260
|
2361
|
|
126
|
2362 #if (NGX_HTTP_SSL)
|
|
|
2363
|
|
|
2364 /* TODO: do not shutdown persistent connection */
|
|
|
2365
|
|
|
2366 if (u->peer.connection->ssl) {
|
|
260
|
2367
|
|
|
2368 /*
|
|
|
2369 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2370 * and do not wait its "close notify" shutdown alert.
|
|
|
2371 * It is acceptable according to the TLS standard.
|
|
|
2372 */
|
|
|
2373
|
|
|
2374 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2375
|
|
|
2376 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2377 }
|
|
|
2378 #endif
|
|
260
|
2379
|
|
|
2380 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2381 "close http upstream connection: %d",
|
|
|
2382 u->peer.connection->fd);
|
|
|
2383
|
|
28
|
2384 ngx_close_connection(u->peer.connection);
|
|
|
2385 }
|
|
|
2386
|
|
32
|
2387 u->peer.connection = NULL;
|
|
|
2388
|
|
112
|
2389 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2390 {
|
|
|
2391 rc = 0;
|
|
|
2392 }
|
|
|
2393
|
|
130
|
2394 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2395 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2396 "http upstream temp fd: %d",
|
|
130
|
2397 u->pipe->temp_file->file.fd);
|
|
28
|
2398 }
|
|
|
2399
|
|
|
2400 #if 0
|
|
|
2401 if (u->cache) {
|
|
|
2402 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2403 "http upstream cache fd: %d",
|
|
28
|
2404 u->cache->ctx.file.fd);
|
|
|
2405 }
|
|
|
2406 #endif
|
|
|
2407
|
|
64
|
2408 if (rc == NGX_DECLINED) {
|
|
|
2409 return;
|
|
|
2410 }
|
|
|
2411
|
|
32
|
2412 r->connection->log->action = "sending to client";
|
|
|
2413
|
|
314
|
2414 if (rc == 0) {
|
|
|
2415 if (r == r->main) {
|
|
|
2416 if (!r->post_action) {
|
|
|
2417 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
|
2418 }
|
|
|
2419
|
|
|
2420 } else {
|
|
|
2421 if (r->out) {
|
|
|
2422 rc = NGX_AGAIN;
|
|
|
2423 }
|
|
|
2424 }
|
|
28
|
2425 }
|
|
|
2426
|
|
|
2427 ngx_http_finalize_request(r, rc);
|
|
|
2428 }
|
|
|
2429
|
|
|
2430
|
|
58
|
2431 static ngx_int_t
|
|
|
2432 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2433 ngx_uint_t offset)
|
|
126
|
2434 {
|
|
58
|
2435 ngx_table_elt_t **ph;
|
|
126
|
2436
|
|
58
|
2437 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2438
|
|
|
2439 if (*ph == NULL) {
|
|
|
2440 *ph = h;
|
|
|
2441 }
|
|
|
2442
|
|
|
2443 return NGX_OK;
|
|
|
2444 }
|
|
|
2445
|
|
|
2446
|
|
|
2447 static ngx_int_t
|
|
|
2448 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2449 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2450 {
|
|
|
2451 ngx_array_t *pa;
|
|
|
2452 ngx_table_elt_t **ph;
|
|
|
2453
|
|
|
2454 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2455
|
|
|
2456 if (pa->elts == NULL) {
|
|
|
2457 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2458 {
|
|
|
2459 return NGX_ERROR;
|
|
|
2460 }
|
|
|
2461 }
|
|
|
2462
|
|
|
2463 ph = ngx_array_push(pa);
|
|
|
2464 if (ph == NULL) {
|
|
|
2465 return NGX_ERROR;
|
|
|
2466 }
|
|
|
2467
|
|
|
2468 *ph = h;
|
|
|
2469
|
|
|
2470 return NGX_OK;
|
|
|
2471 }
|
|
|
2472
|
|
|
2473
|
|
|
2474 static ngx_int_t
|
|
|
2475 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2476 ngx_uint_t offset)
|
|
|
2477 {
|
|
|
2478 return NGX_OK;
|
|
|
2479 }
|
|
|
2480
|
|
|
2481
|
|
|
2482 static ngx_int_t
|
|
76
|
2483 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2484 ngx_uint_t offset)
|
|
126
|
2485 {
|
|
76
|
2486 ngx_int_t n;
|
|
|
2487
|
|
|
2488 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2489
|
|
|
2490 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2491
|
|
|
2492 if (n != NGX_ERROR) {
|
|
|
2493 r->limit_rate = (size_t) n;
|
|
|
2494 }
|
|
|
2495
|
|
|
2496 return NGX_OK;
|
|
|
2497 }
|
|
|
2498
|
|
|
2499
|
|
|
2500 static ngx_int_t
|
|
198
|
2501 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2502 ngx_uint_t offset)
|
|
|
2503 {
|
|
|
2504 u_char c0, c1, c2;
|
|
|
2505
|
|
|
2506 if (r->upstream->conf->change_buffering) {
|
|
|
2507
|
|
|
2508 if (h->value.len == 2) {
|
|
|
2509 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2510 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2511
|
|
|
2512 if (c0 == 'n' && c1 == 'o') {
|
|
|
2513 r->upstream->buffering = 0;
|
|
|
2514 }
|
|
|
2515
|
|
|
2516 } else if (h->value.len == 3) {
|
|
|
2517 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2518 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2519 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2520
|
|
|
2521 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2522 r->upstream->buffering = 1;
|
|
|
2523 }
|
|
|
2524 }
|
|
|
2525 }
|
|
|
2526
|
|
|
2527 return NGX_OK;
|
|
|
2528 }
|
|
|
2529
|
|
|
2530
|
|
|
2531 static ngx_int_t
|
|
206
|
2532 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2533 ngx_uint_t offset)
|
|
|
2534 {
|
|
|
2535 r->headers_out.override_charset = &h->value;
|
|
|
2536
|
|
|
2537 return NGX_OK;
|
|
|
2538 }
|
|
|
2539
|
|
|
2540
|
|
|
2541 static ngx_int_t
|
|
58
|
2542 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2543 ngx_uint_t offset)
|
|
|
2544 {
|
|
122
|
2545 ngx_table_elt_t *ho, **ph;
|
|
58
|
2546
|
|
|
2547 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2548 if (ho == NULL) {
|
|
|
2549 return NGX_ERROR;
|
|
|
2550 }
|
|
|
2551
|
|
|
2552 *ho = *h;
|
|
|
2553
|
|
122
|
2554 if (offset) {
|
|
|
2555 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2556 *ph = ho;
|
|
|
2557 }
|
|
|
2558
|
|
58
|
2559 return NGX_OK;
|
|
|
2560 }
|
|
|
2561
|
|
|
2562
|
|
|
2563 static ngx_int_t
|
|
|
2564 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2565 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2566 {
|
|
|
2567 ngx_array_t *pa;
|
|
|
2568 ngx_table_elt_t *ho, **ph;
|
|
|
2569
|
|
|
2570 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2571
|
|
|
2572 if (pa->elts == NULL) {
|
|
|
2573 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2574 {
|
|
|
2575 return NGX_ERROR;
|
|
|
2576 }
|
|
|
2577 }
|
|
|
2578
|
|
|
2579 ph = ngx_array_push(pa);
|
|
|
2580 if (ph == NULL) {
|
|
|
2581 return NGX_ERROR;
|
|
|
2582 }
|
|
|
2583
|
|
|
2584 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2585 if (ho == NULL) {
|
|
|
2586 return NGX_ERROR;
|
|
|
2587 }
|
|
|
2588
|
|
|
2589 *ho = *h;
|
|
|
2590 *ph = ho;
|
|
|
2591
|
|
|
2592 return NGX_OK;
|
|
|
2593 }
|
|
|
2594
|
|
|
2595
|
|
|
2596 static ngx_int_t
|
|
|
2597 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2598 ngx_uint_t offset)
|
|
|
2599 {
|
|
206
|
2600 u_char *p, *last;
|
|
|
2601
|
|
|
2602 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2603 r->headers_out.content_type = h->value;
|
|
|
2604
|
|
206
|
2605 for (p = h->value.data; *p; p++) {
|
|
|
2606
|
|
|
2607 if (*p != ';') {
|
|
|
2608 continue;
|
|
|
2609 }
|
|
|
2610
|
|
|
2611 last = p;
|
|
|
2612
|
|
|
2613 while (*++p == ' ') { /* void */ }
|
|
|
2614
|
|
286
|
2615 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2616 continue;
|
|
|
2617 }
|
|
|
2618
|
|
|
2619 p += 8;
|
|
|
2620
|
|
|
2621 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2622
|
|
|
2623 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2624 r->headers_out.charset.data = p;
|
|
292
|
2625
|
|
|
2626 return NGX_OK;
|
|
206
|
2627 }
|
|
|
2628
|
|
58
|
2629 return NGX_OK;
|
|
|
2630 }
|
|
|
2631
|
|
|
2632
|
|
|
2633 static ngx_int_t
|
|
|
2634 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2635 ngx_uint_t offset)
|
|
|
2636 {
|
|
|
2637 ngx_table_elt_t *ho;
|
|
|
2638
|
|
|
2639 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2640 if (ho == NULL) {
|
|
|
2641 return NGX_ERROR;
|
|
|
2642 }
|
|
|
2643
|
|
|
2644 *ho = *h;
|
|
|
2645
|
|
|
2646 r->headers_out.content_length = ho;
|
|
|
2647 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2648
|
|
|
2649 return NGX_OK;
|
|
|
2650 }
|
|
|
2651
|
|
|
2652
|
|
|
2653 static ngx_int_t
|
|
|
2654 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2655 ngx_uint_t offset)
|
|
|
2656 {
|
|
|
2657 ngx_int_t rc;
|
|
|
2658 ngx_table_elt_t *ho;
|
|
|
2659
|
|
|
2660 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2661 if (ho == NULL) {
|
|
|
2662 return NGX_ERROR;
|
|
|
2663 }
|
|
|
2664
|
|
|
2665 *ho = *h;
|
|
|
2666
|
|
|
2667 if (r->upstream->rewrite_redirect) {
|
|
|
2668 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2669
|
|
78
|
2670 if (rc == NGX_DECLINED) {
|
|
|
2671 return NGX_OK;
|
|
|
2672 }
|
|
|
2673
|
|
58
|
2674 if (rc == NGX_OK) {
|
|
|
2675 r->headers_out.location = ho;
|
|
|
2676
|
|
|
2677 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2678 "rewritten location: \"%V\"", &ho->value);
|
|
|
2679 }
|
|
|
2680
|
|
|
2681 return rc;
|
|
|
2682 }
|
|
|
2683
|
|
348
|
2684 if (ho->value.data[0] != '/') {
|
|
|
2685 r->headers_out.location = ho;
|
|
|
2686 }
|
|
|
2687
|
|
58
|
2688 /*
|
|
|
2689 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2690 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2691 */
|
|
|
2692
|
|
|
2693 return NGX_OK;
|
|
|
2694 }
|
|
|
2695
|
|
|
2696
|
|
|
2697 static ngx_int_t
|
|
|
2698 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2699 ngx_uint_t offset)
|
|
|
2700 {
|
|
|
2701 u_char *p;
|
|
|
2702 ngx_int_t rc;
|
|
|
2703 ngx_table_elt_t *ho;
|
|
|
2704
|
|
|
2705 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2706 if (ho == NULL) {
|
|
|
2707 return NGX_ERROR;
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 *ho = *h;
|
|
|
2711
|
|
|
2712 if (r->upstream->rewrite_redirect) {
|
|
|
2713
|
|
340
|
2714 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2715
|
|
|
2716 if (p) {
|
|
|
2717 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2718
|
|
|
2719 } else {
|
|
|
2720 return NGX_OK;
|
|
|
2721 }
|
|
|
2722
|
|
78
|
2723 if (rc == NGX_DECLINED) {
|
|
|
2724 return NGX_OK;
|
|
|
2725 }
|
|
|
2726
|
|
58
|
2727 if (rc == NGX_OK) {
|
|
348
|
2728 r->headers_out.refresh = ho;
|
|
|
2729
|
|
58
|
2730 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2731 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2732 }
|
|
|
2733
|
|
|
2734 return rc;
|
|
|
2735 }
|
|
|
2736
|
|
348
|
2737 r->headers_out.refresh = ho;
|
|
|
2738
|
|
58
|
2739 return NGX_OK;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742
|
|
|
2743 #if (NGX_HTTP_GZIP)
|
|
|
2744
|
|
|
2745 static ngx_int_t
|
|
|
2746 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2747 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2748 {
|
|
|
2749 ngx_table_elt_t *ho;
|
|
|
2750
|
|
|
2751 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2752 if (ho == NULL) {
|
|
|
2753 return NGX_ERROR;
|
|
|
2754 }
|
|
|
2755
|
|
|
2756 *ho = *h;
|
|
|
2757
|
|
|
2758 r->headers_out.content_encoding = ho;
|
|
|
2759
|
|
|
2760 return NGX_OK;
|
|
|
2761 }
|
|
|
2762
|
|
|
2763 #endif
|
|
|
2764
|
|
|
2765
|
|
36
|
2766 static ngx_int_t
|
|
122
|
2767 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2768 {
|
|
260
|
2769 ngx_http_variable_t *var, *v;
|
|
28
|
2770
|
|
122
|
2771 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2772 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2773 if (var == NULL) {
|
|
|
2774 return NGX_ERROR;
|
|
|
2775 }
|
|
|
2776
|
|
186
|
2777 var->get_handler = v->get_handler;
|
|
122
|
2778 var->data = v->data;
|
|
|
2779 }
|
|
|
2780
|
|
28
|
2781 return NGX_OK;
|
|
|
2782 }
|
|
58
|
2783
|
|
|
2784
|
|
122
|
2785 static ngx_int_t
|
|
298
|
2786 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2787 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2788 {
|
|
|
2789 u_char *p;
|
|
|
2790 size_t len;
|
|
|
2791 ngx_uint_t i;
|
|
|
2792 ngx_http_upstream_state_t *state;
|
|
|
2793
|
|
|
2794 v->valid = 1;
|
|
340
|
2795 v->no_cacheable = 0;
|
|
298
|
2796 v->not_found = 0;
|
|
|
2797
|
|
|
2798 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2799 v->not_found = 1;
|
|
|
2800 return NGX_OK;
|
|
|
2801 }
|
|
|
2802
|
|
|
2803 len = 0;
|
|
|
2804 state = r->upstream_states->elts;
|
|
|
2805
|
|
|
2806 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2807 if (state[i].peer) {
|
|
|
2808 len += state[i].peer->len + 2;
|
|
|
2809
|
|
|
2810 } else {
|
|
|
2811 len += 3;
|
|
|
2812 }
|
|
|
2813 }
|
|
|
2814
|
|
|
2815 p = ngx_palloc(r->pool, len);
|
|
|
2816 if (p == NULL) {
|
|
|
2817 return NGX_ERROR;
|
|
|
2818 }
|
|
|
2819
|
|
|
2820 v->data = p;
|
|
|
2821
|
|
|
2822 i = 0;
|
|
|
2823
|
|
|
2824 for ( ;; ) {
|
|
|
2825 if (state[i].peer) {
|
|
|
2826 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2827 }
|
|
|
2828
|
|
|
2829 if (++i == r->upstream_states->nelts) {
|
|
|
2830 break;
|
|
|
2831 }
|
|
|
2832
|
|
|
2833 if (state[i].peer) {
|
|
|
2834 *p++ = ',';
|
|
|
2835 *p++ = ' ';
|
|
|
2836
|
|
|
2837 } else {
|
|
|
2838 *p++ = ' ';
|
|
|
2839 *p++ = ':';
|
|
|
2840 *p++ = ' ';
|
|
|
2841
|
|
|
2842 if (++i == r->upstream_states->nelts) {
|
|
|
2843 break;
|
|
|
2844 }
|
|
|
2845
|
|
|
2846 continue;
|
|
|
2847 }
|
|
|
2848 }
|
|
|
2849
|
|
|
2850 v->len = p - v->data;
|
|
|
2851
|
|
|
2852 return NGX_OK;
|
|
|
2853 }
|
|
|
2854
|
|
|
2855
|
|
|
2856 static ngx_int_t
|
|
122
|
2857 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2858 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2859 {
|
|
|
2860 u_char *p;
|
|
|
2861 size_t len;
|
|
|
2862 ngx_uint_t i;
|
|
|
2863 ngx_http_upstream_state_t *state;
|
|
|
2864
|
|
|
2865 v->valid = 1;
|
|
340
|
2866 v->no_cacheable = 0;
|
|
122
|
2867 v->not_found = 0;
|
|
|
2868
|
|
296
|
2869 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2870 v->not_found = 1;
|
|
|
2871 return NGX_OK;
|
|
|
2872 }
|
|
|
2873
|
|
296
|
2874 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2875
|
|
|
2876 p = ngx_palloc(r->pool, len);
|
|
|
2877 if (p == NULL) {
|
|
|
2878 return NGX_ERROR;
|
|
|
2879 }
|
|
|
2880
|
|
|
2881 v->data = p;
|
|
|
2882
|
|
|
2883 i = 0;
|
|
296
|
2884 state = r->upstream_states->elts;
|
|
122
|
2885
|
|
|
2886 for ( ;; ) {
|
|
296
|
2887 if (state[i].status) {
|
|
|
2888 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2889
|
|
|
2890 } else {
|
|
296
|
2891 *p++ = '-';
|
|
122
|
2892 }
|
|
|
2893
|
|
296
|
2894 if (++i == r->upstream_states->nelts) {
|
|
122
|
2895 break;
|
|
|
2896 }
|
|
|
2897
|
|
296
|
2898 if (state[i].peer) {
|
|
|
2899 *p++ = ',';
|
|
|
2900 *p++ = ' ';
|
|
|
2901
|
|
|
2902 } else {
|
|
|
2903 *p++ = ' ';
|
|
|
2904 *p++ = ':';
|
|
|
2905 *p++ = ' ';
|
|
|
2906
|
|
|
2907 if (++i == r->upstream_states->nelts) {
|
|
|
2908 break;
|
|
|
2909 }
|
|
|
2910
|
|
|
2911 continue;
|
|
|
2912 }
|
|
122
|
2913 }
|
|
|
2914
|
|
|
2915 v->len = p - v->data;
|
|
|
2916
|
|
|
2917 return NGX_OK;
|
|
|
2918 }
|
|
|
2919
|
|
|
2920
|
|
|
2921 static ngx_int_t
|
|
|
2922 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2923 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2924 {
|
|
|
2925 u_char *p;
|
|
|
2926 size_t len;
|
|
|
2927 ngx_uint_t i;
|
|
262
|
2928 ngx_msec_int_t ms;
|
|
122
|
2929 ngx_http_upstream_state_t *state;
|
|
|
2930
|
|
|
2931 v->valid = 1;
|
|
340
|
2932 v->no_cacheable = 0;
|
|
122
|
2933 v->not_found = 0;
|
|
|
2934
|
|
296
|
2935 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2936 v->not_found = 1;
|
|
|
2937 return NGX_OK;
|
|
|
2938 }
|
|
|
2939
|
|
296
|
2940 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
2941
|
|
|
2942 p = ngx_palloc(r->pool, len);
|
|
|
2943 if (p == NULL) {
|
|
|
2944 return NGX_ERROR;
|
|
|
2945 }
|
|
|
2946
|
|
|
2947 v->data = p;
|
|
|
2948
|
|
|
2949 i = 0;
|
|
296
|
2950 state = r->upstream_states->elts;
|
|
122
|
2951
|
|
|
2952 for ( ;; ) {
|
|
296
|
2953 if (state[i].status) {
|
|
346
|
2954 ms = (ngx_msec_int_t)
|
|
|
2955 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
2956 ms = (ms >= 0) ? ms : 0;
|
|
|
2957 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
2958
|
|
|
2959 } else {
|
|
|
2960 *p++ = '-';
|
|
122
|
2961 }
|
|
|
2962
|
|
296
|
2963 if (++i == r->upstream_states->nelts) {
|
|
122
|
2964 break;
|
|
|
2965 }
|
|
|
2966
|
|
296
|
2967 if (state[i].peer) {
|
|
|
2968 *p++ = ',';
|
|
|
2969 *p++ = ' ';
|
|
|
2970
|
|
|
2971 } else {
|
|
|
2972 *p++ = ' ';
|
|
|
2973 *p++ = ':';
|
|
|
2974 *p++ = ' ';
|
|
|
2975
|
|
|
2976 if (++i == r->upstream_states->nelts) {
|
|
|
2977 break;
|
|
|
2978 }
|
|
|
2979
|
|
|
2980 continue;
|
|
|
2981 }
|
|
122
|
2982 }
|
|
|
2983
|
|
|
2984 v->len = p - v->data;
|
|
|
2985
|
|
|
2986 return NGX_OK;
|
|
|
2987 }
|
|
|
2988
|
|
|
2989
|
|
296
|
2990 ngx_int_t
|
|
|
2991 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
2992 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2993 {
|
|
|
2994 if (r->upstream == NULL) {
|
|
|
2995 v->not_found = 1;
|
|
|
2996 return NGX_OK;
|
|
|
2997 }
|
|
|
2998
|
|
|
2999 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3000 &r->upstream->headers_in.headers.part,
|
|
|
3001 sizeof("upstream_http_") - 1);
|
|
|
3002 }
|
|
|
3003
|
|
|
3004
|
|
200
|
3005 static char *
|
|
|
3006 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3007 {
|
|
260
|
3008 char *rv;
|
|
|
3009 void *mconf;
|
|
|
3010 ngx_str_t *value;
|
|
|
3011 ngx_url_t u;
|
|
|
3012 ngx_uint_t m;
|
|
|
3013 ngx_conf_t pcf;
|
|
|
3014 ngx_http_module_t *module;
|
|
|
3015 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3016 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3017
|
|
|
3018 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3019
|
|
|
3020 value = cf->args->elts;
|
|
|
3021 u.host = value[1];
|
|
|
3022 u.no_resolve = 1;
|
|
|
3023
|
|
|
3024 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3025 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3026 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3027 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3028 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3029 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3030 if (uscf == NULL) {
|
|
|
3031 return NGX_CONF_ERROR;
|
|
|
3032 }
|
|
|
3033
|
|
200
|
3034
|
|
|
3035 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3036 if (ctx == NULL) {
|
|
|
3037 return NGX_CONF_ERROR;
|
|
|
3038 }
|
|
|
3039
|
|
260
|
3040 http_ctx = cf->ctx;
|
|
|
3041 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3042
|
|
|
3043 /* the upstream{}'s srv_conf */
|
|
|
3044
|
|
|
3045 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3046 if (ctx->srv_conf == NULL) {
|
|
|
3047 return NGX_CONF_ERROR;
|
|
|
3048 }
|
|
|
3049
|
|
|
3050 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3051
|
|
260
|
3052 uscf->srv_conf = ctx->srv_conf;
|
|
|
3053
|
|
200
|
3054
|
|
|
3055 /* the upstream{}'s loc_conf */
|
|
|
3056
|
|
|
3057 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3058 if (ctx->loc_conf == NULL) {
|
|
|
3059 return NGX_CONF_ERROR;
|
|
|
3060 }
|
|
|
3061
|
|
|
3062 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3063 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3064 continue;
|
|
|
3065 }
|
|
|
3066
|
|
|
3067 module = ngx_modules[m]->ctx;
|
|
|
3068
|
|
260
|
3069 if (module->create_srv_conf) {
|
|
|
3070 mconf = module->create_srv_conf(cf);
|
|
|
3071 if (mconf == NULL) {
|
|
|
3072 return NGX_CONF_ERROR;
|
|
|
3073 }
|
|
|
3074
|
|
|
3075 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3076 }
|
|
|
3077
|
|
200
|
3078 if (module->create_loc_conf) {
|
|
|
3079 mconf = module->create_loc_conf(cf);
|
|
|
3080 if (mconf == NULL) {
|
|
|
3081 return NGX_CONF_ERROR;
|
|
|
3082 }
|
|
|
3083
|
|
|
3084 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3085 }
|
|
|
3086 }
|
|
|
3087
|
|
|
3088
|
|
|
3089 /* parse inside upstream{} */
|
|
|
3090
|
|
|
3091 pcf = *cf;
|
|
|
3092 cf->ctx = ctx;
|
|
|
3093 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3094
|
|
|
3095 rv = ngx_conf_parse(cf, NULL);
|
|
|
3096
|
|
|
3097 *cf = pcf;
|
|
|
3098
|
|
|
3099 if (rv != NGX_CONF_OK) {
|
|
|
3100 return rv;
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 if (uscf->servers == NULL) {
|
|
|
3104 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3105 "no servers are inside upstream");
|
|
|
3106 return NGX_CONF_ERROR;
|
|
|
3107 }
|
|
|
3108
|
|
|
3109 return rv;
|
|
|
3110 }
|
|
|
3111
|
|
|
3112
|
|
|
3113 static char *
|
|
|
3114 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3115 {
|
|
|
3116 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3117
|
|
260
|
3118 time_t fail_timeout;
|
|
|
3119 ngx_str_t *value, s;
|
|
|
3120 ngx_url_t u;
|
|
|
3121 ngx_int_t weight, max_fails;
|
|
|
3122 ngx_uint_t i;
|
|
|
3123 ngx_http_upstream_server_t *us;
|
|
200
|
3124
|
|
|
3125 if (uscf->servers == NULL) {
|
|
260
|
3126 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3127 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3128 if (uscf->servers == NULL) {
|
|
|
3129 return NGX_CONF_ERROR;
|
|
|
3130 }
|
|
|
3131 }
|
|
|
3132
|
|
260
|
3133 us = ngx_array_push(uscf->servers);
|
|
|
3134 if (us == NULL) {
|
|
200
|
3135 return NGX_CONF_ERROR;
|
|
|
3136 }
|
|
|
3137
|
|
260
|
3138 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3139
|
|
200
|
3140 value = cf->args->elts;
|
|
|
3141
|
|
|
3142 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3143
|
|
|
3144 u.url = value[1];
|
|
266
|
3145 u.default_port = 80;
|
|
200
|
3146
|
|
340
|
3147 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3148 if (u.err) {
|
|
|
3149 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3150 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3151 }
|
|
|
3152
|
|
|
3153 return NGX_CONF_ERROR;
|
|
|
3154 }
|
|
|
3155
|
|
212
|
3156 weight = 1;
|
|
260
|
3157 max_fails = 1;
|
|
|
3158 fail_timeout = 10;
|
|
|
3159
|
|
|
3160 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3161
|
|
|
3162 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3163
|
|
|
3164 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3165 goto invalid;
|
|
|
3166 }
|
|
|
3167
|
|
|
3168 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3169
|
|
|
3170 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3171 goto invalid;
|
|
|
3172 }
|
|
|
3173
|
|
260
|
3174 continue;
|
|
|
3175 }
|
|
|
3176
|
|
|
3177 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3178
|
|
|
3179 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3180 goto invalid;
|
|
|
3181 }
|
|
|
3182
|
|
|
3183 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3184
|
|
|
3185 if (max_fails == NGX_ERROR) {
|
|
|
3186 goto invalid;
|
|
|
3187 }
|
|
|
3188
|
|
|
3189 continue;
|
|
212
|
3190 }
|
|
260
|
3191
|
|
|
3192 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3193
|
|
|
3194 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3195 goto invalid;
|
|
|
3196 }
|
|
|
3197
|
|
|
3198 s.len = value[i].len - 13;
|
|
|
3199 s.data = &value[i].data[13];
|
|
|
3200
|
|
|
3201 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3202
|
|
|
3203 if (fail_timeout < 0) {
|
|
|
3204 goto invalid;
|
|
|
3205 }
|
|
|
3206
|
|
|
3207 continue;
|
|
|
3208 }
|
|
|
3209
|
|
326
|
3210 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3211
|
|
|
3212 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3213 goto invalid;
|
|
|
3214 }
|
|
|
3215
|
|
|
3216 us->backup = 1;
|
|
|
3217
|
|
|
3218 continue;
|
|
|
3219 }
|
|
|
3220
|
|
260
|
3221 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3222
|
|
|
3223 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3224 goto invalid;
|
|
|
3225 }
|
|
|
3226
|
|
|
3227 us->down = 1;
|
|
|
3228
|
|
|
3229 continue;
|
|
|
3230 }
|
|
|
3231
|
|
|
3232 goto invalid;
|
|
212
|
3233 }
|
|
|
3234
|
|
260
|
3235 us->addrs = u.addrs;
|
|
|
3236 us->naddrs = u.naddrs;
|
|
|
3237 us->weight = weight;
|
|
|
3238 us->max_fails = max_fails;
|
|
|
3239 us->fail_timeout = fail_timeout;
|
|
200
|
3240
|
|
|
3241 return NGX_CONF_OK;
|
|
212
|
3242
|
|
|
3243 invalid:
|
|
|
3244
|
|
260
|
3245 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3246 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3247
|
|
|
3248 return NGX_CONF_ERROR;
|
|
200
|
3249 }
|
|
|
3250
|
|
|
3251
|
|
|
3252 ngx_http_upstream_srv_conf_t *
|
|
260
|
3253 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3254 {
|
|
|
3255 ngx_uint_t i;
|
|
260
|
3256 ngx_http_upstream_server_t *us;
|
|
200
|
3257 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3258 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3259
|
|
260
|
3260 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3261
|
|
340
|
3262 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3263 if (u->err) {
|
|
|
3264 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3265 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3266 }
|
|
|
3267
|
|
|
3268 return NULL;
|
|
|
3269 }
|
|
|
3270 }
|
|
|
3271
|
|
|
3272 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3273
|
|
|
3274 uscfp = umcf->upstreams.elts;
|
|
|
3275
|
|
|
3276 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3277
|
|
|
3278 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3279 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3280 != 0)
|
|
|
3281 {
|
|
200
|
3282 continue;
|
|
|
3283 }
|
|
|
3284
|
|
260
|
3285 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3286 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3287 {
|
|
260
|
3288 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3289 "duplicate upstream \"%V\"", &u->host);
|
|
|
3290 return NULL;
|
|
200
|
3291 }
|
|
260
|
3292
|
|
266
|
3293 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3294 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3295 "upstream \"%V\" may not have port %d",
|
|
|
3296 &u->host, u->port);
|
|
|
3297 return NULL;
|
|
|
3298 }
|
|
|
3299
|
|
|
3300 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3301 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3302 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3303 &u->host, uscfp[i]->port,
|
|
336
|
3304 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3305 return NULL;
|
|
|
3306 }
|
|
|
3307
|
|
|
3308 if (uscfp[i]->port != u->port) {
|
|
|
3309 continue;
|
|
260
|
3310 }
|
|
|
3311
|
|
324
|
3312 if (uscfp[i]->default_port && u->default_port
|
|
|
3313 && uscfp[i]->default_port != u->default_port)
|
|
|
3314 {
|
|
|
3315 continue;
|
|
|
3316 }
|
|
|
3317
|
|
260
|
3318 return uscfp[i];
|
|
200
|
3319 }
|
|
|
3320
|
|
|
3321 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3322 if (uscf == NULL) {
|
|
|
3323 return NULL;
|
|
|
3324 }
|
|
|
3325
|
|
260
|
3326 uscf->flags = flags;
|
|
200
|
3327 uscf->host = u->host;
|
|
336
|
3328 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3329 uscf->line = cf->conf_file->line;
|
|
266
|
3330 uscf->port = u->port;
|
|
|
3331 uscf->default_port = u->default_port;
|
|
260
|
3332
|
|
|
3333 if (u->naddrs == 1) {
|
|
|
3334 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3335 sizeof(ngx_http_upstream_server_t));
|
|
|
3336 if (uscf->servers == NULL) {
|
|
|
3337 return NGX_CONF_ERROR;
|
|
|
3338 }
|
|
|
3339
|
|
|
3340 us = ngx_array_push(uscf->servers);
|
|
|
3341 if (us == NULL) {
|
|
|
3342 return NGX_CONF_ERROR;
|
|
|
3343 }
|
|
|
3344
|
|
|
3345 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3346
|
|
|
3347 us->addrs = u->addrs;
|
|
|
3348 us->naddrs = u->naddrs;
|
|
|
3349 }
|
|
200
|
3350
|
|
|
3351 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3352 if (uscfp == NULL) {
|
|
|
3353 return NULL;
|
|
|
3354 }
|
|
|
3355
|
|
|
3356 *uscfp = uscf;
|
|
|
3357
|
|
|
3358 return uscf;
|
|
|
3359 }
|
|
|
3360
|
|
|
3361
|
|
356
|
3362 ngx_int_t
|
|
|
3363 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3364 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3365 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3366 {
|
|
|
3367 ngx_str_t *h;
|
|
|
3368 ngx_uint_t i, j;
|
|
|
3369 ngx_array_t hide_headers;
|
|
|
3370 ngx_hash_key_t *hk;
|
|
|
3371
|
|
|
3372 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3373 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3374 {
|
|
|
3375 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3376
|
|
|
3377 if (conf->hide_headers_hash.buckets) {
|
|
|
3378 return NGX_OK;
|
|
|
3379 }
|
|
|
3380
|
|
|
3381 conf->hide_headers = prev->hide_headers;
|
|
|
3382 conf->pass_headers = prev->pass_headers;
|
|
|
3383
|
|
|
3384 } else {
|
|
|
3385 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3386 conf->hide_headers = prev->hide_headers;
|
|
|
3387 }
|
|
|
3388
|
|
|
3389 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3390 conf->pass_headers = prev->pass_headers;
|
|
|
3391 }
|
|
|
3392 }
|
|
|
3393
|
|
|
3394 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3395 != NGX_OK)
|
|
|
3396 {
|
|
|
3397 return NGX_ERROR;
|
|
|
3398 }
|
|
|
3399
|
|
|
3400 for (h = default_hide_headers; h->len; h++) {
|
|
|
3401 hk = ngx_array_push(&hide_headers);
|
|
|
3402 if (hk == NULL) {
|
|
|
3403 return NGX_ERROR;
|
|
|
3404 }
|
|
|
3405
|
|
|
3406 hk->key = *h;
|
|
|
3407 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3408 hk->value = (void *) 1;
|
|
|
3409 }
|
|
|
3410
|
|
|
3411 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3412
|
|
|
3413 h = conf->hide_headers->elts;
|
|
|
3414
|
|
|
3415 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3416
|
|
|
3417 hk = hide_headers.elts;
|
|
|
3418
|
|
|
3419 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3420 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3421 goto exist;
|
|
|
3422 }
|
|
|
3423 }
|
|
|
3424
|
|
|
3425 hk = ngx_array_push(&hide_headers);
|
|
|
3426 if (hk == NULL) {
|
|
|
3427 return NGX_ERROR;
|
|
|
3428 }
|
|
|
3429
|
|
|
3430 hk->key = h[i];
|
|
|
3431 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3432 hk->value = (void *) 1;
|
|
|
3433
|
|
|
3434 exist:
|
|
|
3435
|
|
|
3436 continue;
|
|
|
3437 }
|
|
|
3438 }
|
|
|
3439
|
|
|
3440 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3441
|
|
|
3442 h = conf->pass_headers->elts;
|
|
|
3443 hk = hide_headers.elts;
|
|
|
3444
|
|
|
3445 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3446 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3447
|
|
|
3448 if (hk[j].key.data == NULL) {
|
|
|
3449 continue;
|
|
|
3450 }
|
|
|
3451
|
|
|
3452 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3453 hk[j].key.data = NULL;
|
|
|
3454 break;
|
|
|
3455 }
|
|
|
3456 }
|
|
|
3457 }
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 hash->hash = &conf->hide_headers_hash;
|
|
|
3461 hash->key = ngx_hash_key_lc;
|
|
|
3462 hash->pool = cf->pool;
|
|
|
3463 hash->temp_pool = NULL;
|
|
|
3464
|
|
|
3465 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3466 }
|
|
|
3467
|
|
|
3468
|
|
58
|
3469 static void *
|
|
|
3470 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3471 {
|
|
|
3472 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3473
|
|
|
3474 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3475 if (umcf == NULL) {
|
|
|
3476 return NULL;
|
|
|
3477 }
|
|
|
3478
|
|
200
|
3479 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3480 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3481 != NGX_OK)
|
|
|
3482 {
|
|
|
3483 return NGX_CONF_ERROR;
|
|
|
3484 }
|
|
|
3485
|
|
58
|
3486 return umcf;
|
|
|
3487 }
|
|
|
3488
|
|
|
3489
|
|
|
3490 static char *
|
|
200
|
3491 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3492 {
|
|
|
3493 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3494
|
|
200
|
3495 ngx_uint_t i;
|
|
|
3496 ngx_array_t headers_in;
|
|
|
3497 ngx_hash_key_t *hk;
|
|
|
3498 ngx_hash_init_t hash;
|
|
260
|
3499 ngx_http_upstream_init_pt init;
|
|
200
|
3500 ngx_http_upstream_header_t *header;
|
|
|
3501 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3502
|
|
|
3503 uscfp = umcf->upstreams.elts;
|
|
|
3504
|
|
|
3505 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3506
|
|
|
3507 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3508 ngx_http_upstream_init_round_robin;
|
|
|
3509
|
|
|
3510 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3511 return NGX_CONF_ERROR;
|
|
|
3512 }
|
|
|
3513 }
|
|
198
|
3514
|
|
212
|
3515
|
|
260
|
3516 /* upstream_headers_in_hash */
|
|
|
3517
|
|
198
|
3518 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3519 != NGX_OK)
|
|
58
|
3520 {
|
|
|
3521 return NGX_CONF_ERROR;
|
|
|
3522 }
|
|
|
3523
|
|
198
|
3524 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3525 hk = ngx_array_push(&headers_in);
|
|
|
3526 if (hk == NULL) {
|
|
|
3527 return NGX_CONF_ERROR;
|
|
|
3528 }
|
|
|
3529
|
|
|
3530 hk->key = header->name;
|
|
|
3531 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3532 hk->value = header;
|
|
|
3533 }
|
|
|
3534
|
|
|
3535 hash.hash = &umcf->headers_in_hash;
|
|
|
3536 hash.key = ngx_hash_key_lc;
|
|
|
3537 hash.max_size = 512;
|
|
244
|
3538 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3539 hash.name = "upstream_headers_in_hash";
|
|
|
3540 hash.pool = cf->pool;
|
|
|
3541 hash.temp_pool = NULL;
|
|
|
3542
|
|
|
3543 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3544 return NGX_CONF_ERROR;
|
|
|
3545 }
|
|
58
|
3546
|
|
|
3547 return NGX_CONF_OK;
|
|
|
3548 }
|
