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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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412
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25 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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26 ngx_http_upstream_t *u);
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27 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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28 ngx_http_upstream_t *u);
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294
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29 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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30 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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31 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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32 ngx_http_upstream_t *u);
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130
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33 static void
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34 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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35 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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36 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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37 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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38 ssize_t bytes);
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58
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39 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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40 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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318
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41 static void ngx_http_upstream_store(ngx_http_request_t *r,
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42 ngx_http_upstream_t *u);
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28
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43 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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44 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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45 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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46 static void ngx_http_upstream_cleanup(void *data);
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28
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47 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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48 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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49
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58
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50 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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51 ngx_table_elt_t *h, ngx_uint_t offset);
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52 static ngx_int_t
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53 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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55 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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57 static ngx_int_t ngx_http_upstream_process_limit_rate(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_process_buffering(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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206
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61 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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63 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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65 static ngx_int_t
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66 ngx_http_upstream_copy_multi_header_lines(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_copy_content_type(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_copy_content_length(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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74 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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76 #if (NGX_HTTP_GZIP)
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77 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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78 ngx_table_elt_t *h, ngx_uint_t offset);
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79 #endif
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80
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122
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81 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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82 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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83 ngx_http_variable_value_t *v, uintptr_t data);
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122
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84 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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85 ngx_http_variable_value_t *v, uintptr_t data);
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86 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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87 ngx_http_variable_value_t *v, uintptr_t data);
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88
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200
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89 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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90 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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91 void *conf);
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92
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58
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93 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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94 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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95
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126
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96 #if (NGX_HTTP_SSL)
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140
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97 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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98 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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99 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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100 #endif
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101
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58
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102
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103 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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104
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105 { ngx_string("Status"),
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106 ngx_http_upstream_process_header_line,
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107 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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108 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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109
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110 { ngx_string("Content-Type"),
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111 ngx_http_upstream_process_header_line,
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112 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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113 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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114
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115 { ngx_string("Content-Length"),
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116 ngx_http_upstream_process_header_line,
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117 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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118 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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119
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120 { ngx_string("Date"),
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121 ngx_http_upstream_process_header_line,
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122 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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123 ngx_http_upstream_copy_header_line,
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124 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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125
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318
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126 { ngx_string("Last-Modified"),
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127 ngx_http_upstream_process_header_line,
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128 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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129 ngx_http_upstream_copy_header_line,
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130 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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131
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58
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132 { ngx_string("Server"),
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133 ngx_http_upstream_process_header_line,
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134 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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135 ngx_http_upstream_copy_header_line,
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136 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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137
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78
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138 { ngx_string("WWW-Authenticate"),
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139 ngx_http_upstream_process_header_line,
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140 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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141 ngx_http_upstream_copy_header_line, 0, 0 },
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142
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58
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143 { ngx_string("Location"),
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392
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144 ngx_http_upstream_process_header_line,
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145 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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146 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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147
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148 { ngx_string("Refresh"),
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149 ngx_http_upstream_ignore_header_line, 0,
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64
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150 ngx_http_upstream_rewrite_refresh, 0, 0 },
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151
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152 { ngx_string("Set-Cookie"),
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153 ngx_http_upstream_ignore_header_line, 0,
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80
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154 ngx_http_upstream_copy_header_line, 0, 1 },
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155
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156 { ngx_string("Content-Disposition"),
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157 ngx_http_upstream_ignore_header_line, 0,
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158 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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159
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160 { ngx_string("Cache-Control"),
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161 ngx_http_upstream_process_multi_header_lines,
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162 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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163 ngx_http_upstream_copy_multi_header_lines,
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64
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164 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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165
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122
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166 { ngx_string("Expires"),
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167 ngx_http_upstream_process_header_line,
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168 offsetof(ngx_http_upstream_headers_in_t, expires),
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169 ngx_http_upstream_copy_header_line,
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170 offsetof(ngx_http_headers_out_t, expires), 1 },
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171
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126
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172 { ngx_string("Accept-Ranges"),
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173 ngx_http_upstream_process_header_line,
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174 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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175 ngx_http_upstream_copy_header_line,
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176 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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177
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58
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178 { ngx_string("Connection"),
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179 ngx_http_upstream_ignore_header_line, 0,
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64
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180 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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181
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190
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182 { ngx_string("Keep-Alive"),
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183 ngx_http_upstream_ignore_header_line, 0,
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184 ngx_http_upstream_ignore_header_line, 0, 0 },
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185
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58
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186 { ngx_string("X-Powered-By"),
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187 ngx_http_upstream_ignore_header_line, 0,
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198
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188 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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189
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190 { ngx_string("X-Accel-Expires"),
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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_expires),
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198
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193 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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194
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195 { ngx_string("X-Accel-Redirect"),
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196 ngx_http_upstream_process_header_line,
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197 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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198 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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199
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76
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200 { ngx_string("X-Accel-Limit-Rate"),
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201 ngx_http_upstream_process_limit_rate, 0,
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202 ngx_http_upstream_ignore_header_line, 0, 0 },
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203
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198
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204 { ngx_string("X-Accel-Buffering"),
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205 ngx_http_upstream_process_buffering, 0,
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206 ngx_http_upstream_ignore_header_line, 0, 0 },
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207
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206
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208 { ngx_string("X-Accel-Charset"),
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209 ngx_http_upstream_process_charset, 0,
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210 ngx_http_upstream_ignore_header_line, 0, 0 },
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211
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58
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212 #if (NGX_HTTP_GZIP)
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213 { ngx_string("Content-Encoding"),
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214 ngx_http_upstream_process_header_line,
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215 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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216 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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217 #endif
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218
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64
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219 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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220 };
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28
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221
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222
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200
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223 static ngx_command_t ngx_http_upstream_commands[] = {
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224
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225 { ngx_string("upstream"),
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226 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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227 ngx_http_upstream,
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228 0,
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229 0,
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230 NULL },
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231
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232 { ngx_string("server"),
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260
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233 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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234 ngx_http_upstream_server,
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235 NGX_HTTP_SRV_CONF_OFFSET,
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236 0,
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237 NULL },
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238
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239 ngx_null_command
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240 };
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241
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242
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243 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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244 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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245 NULL, /* postconfiguration */
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246
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247 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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248 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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249
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250 NULL, /* create server configuration */
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251 NULL, /* merge server configuration */
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252
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253 NULL, /* create location configuration */
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254 NULL /* merge location configuration */
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255 };
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126
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256
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28
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257
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258 ngx_module_t ngx_http_upstream_module = {
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58
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259 NGX_MODULE_V1,
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28
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260 &ngx_http_upstream_module_ctx, /* module context */
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200
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261 ngx_http_upstream_commands, /* module directives */
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28
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262 NGX_HTTP_MODULE, /* module type */
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90
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263 NULL, /* init master */
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28
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264 NULL, /* init module */
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90
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265 NULL, /* init process */
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266 NULL, /* init thread */
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267 NULL, /* exit thread */
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268 NULL, /* exit process */
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269 NULL, /* exit master */
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270 NGX_MODULE_V1_PADDING
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28
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271 };
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272
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273
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122
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274 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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275
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298
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276 { ngx_string("upstream_addr"), NULL,
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426
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277 ngx_http_upstream_addr_variable, 0,
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278 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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279
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186
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280 { ngx_string("upstream_status"), NULL,
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426
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281 ngx_http_upstream_status_variable, 0,
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282 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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283
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186
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284 { ngx_string("upstream_response_time"), NULL,
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426
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285 ngx_http_upstream_response_time_variable, 0,
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286 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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287
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186
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288 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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289 };
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290
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291
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412
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292 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
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293 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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294 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
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295 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
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296 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
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297 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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298 { 0, 0 }
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299 };
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300
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36
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301 void
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302 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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303 {
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348
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304 ngx_str_t *host;
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305 ngx_uint_t i;
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306 ngx_connection_t *c;
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307 ngx_resolver_ctx_t *ctx, temp;
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308 ngx_http_cleanup_t *cln;
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309 ngx_http_upstream_t *u;
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310 ngx_http_core_loc_conf_t *clcf;
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|
311 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
312 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
313
|
|
|
314 c = r->connection;
|
|
|
315
|
|
|
316 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
317 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
318
|
|
|
319 if (c->read->timer_set) {
|
|
|
320 ngx_del_timer(c->read);
|
|
|
321 }
|
|
|
322
|
|
178
|
323 u = r->upstream;
|
|
|
324
|
|
|
325 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
326 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
327 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
328 }
|
|
126
|
329
|
|
28
|
330 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
331
|
|
|
332 if (!c->write->active) {
|
|
80
|
333 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
334 == NGX_ERROR)
|
|
28
|
335 {
|
|
|
336 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
337 return;
|
|
|
338 }
|
|
|
339 }
|
|
|
340 }
|
|
|
341
|
|
86
|
342 if (r->request_body) {
|
|
|
343 u->request_bufs = r->request_body->bufs;
|
|
|
344 }
|
|
58
|
345
|
|
86
|
346 if (u->create_request(r) != NGX_OK) {
|
|
28
|
347 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
348 return;
|
|
|
349 }
|
|
|
350
|
|
58
|
351 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
352
|
|
|
353 u->output.pool = r->pool;
|
|
|
354 u->output.bufs.num = 1;
|
|
58
|
355 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
356 u->output.output_filter = ngx_chain_writer;
|
|
|
357 u->output.filter_ctx = &u->writer;
|
|
|
358
|
|
|
359 u->writer.pool = r->pool;
|
|
|
360
|
|
296
|
361 if (r->upstream_states == NULL) {
|
|
|
362
|
|
|
363 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
364 sizeof(ngx_http_upstream_state_t));
|
|
|
365 if (r->upstream_states == NULL) {
|
|
|
366 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
367 return;
|
|
|
368 }
|
|
|
369
|
|
|
370 } else {
|
|
|
371
|
|
|
372 u->state = ngx_array_push(r->upstream_states);
|
|
|
373 if (u->state == NULL) {
|
|
|
374 ngx_http_upstream_finalize_request(r, u,
|
|
|
375 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
376 return;
|
|
|
377 }
|
|
|
378
|
|
|
379 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
380 }
|
|
|
381
|
|
142
|
382 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
383 if (cln == NULL) {
|
|
|
384 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
385 return;
|
|
|
386 }
|
|
|
387
|
|
|
388 cln->handler = ngx_http_upstream_cleanup;
|
|
|
389 cln->data = r;
|
|
|
390 u->cleanup = &cln->handler;
|
|
|
391
|
|
320
|
392 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
393
|
|
348
|
394 if (u->resolved == NULL) {
|
|
|
395
|
|
|
396 uscf = u->conf->upstream;
|
|
|
397
|
|
|
398 } else {
|
|
|
399
|
|
356
|
400 host = &u->resolved->host;
|
|
348
|
401
|
|
|
402 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
403
|
|
|
404 uscfp = umcf->upstreams.elts;
|
|
|
405
|
|
|
406 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
407
|
|
|
408 uscf = uscfp[i];
|
|
|
409
|
|
|
410 if (uscf->host.len == host->len
|
|
416
|
411 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
412 || uscf->port == u->resolved->port)
|
|
348
|
413 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
414 {
|
|
|
415 goto found;
|
|
|
416 }
|
|
|
417 }
|
|
|
418
|
|
|
419 temp.name = *host;
|
|
|
420
|
|
|
421 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
422 if (ctx == NULL) {
|
|
|
423 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
424 return;
|
|
|
425 }
|
|
|
426
|
|
354
|
427 if (ctx == NGX_NO_RESOLVER) {
|
|
|
428 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
429 "no resolver defined to resolve %V", host);
|
|
|
430
|
|
|
431 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
432 return;
|
|
|
433 }
|
|
|
434
|
|
348
|
435 ctx->name = *host;
|
|
|
436 ctx->type = NGX_RESOLVE_A;
|
|
|
437 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
438 ctx->data = r;
|
|
|
439 ctx->timeout = clcf->resolver_timeout;
|
|
|
440
|
|
372
|
441 u->resolved->ctx = ctx;
|
|
|
442
|
|
348
|
443 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
444 u->resolved->ctx = NULL;
|
|
348
|
445 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
446 return;
|
|
|
447 }
|
|
|
448
|
|
|
449 return;
|
|
|
450 }
|
|
|
451
|
|
|
452 found:
|
|
|
453
|
|
|
454 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
455 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
456 return;
|
|
|
457 }
|
|
|
458
|
|
28
|
459 ngx_http_upstream_connect(r, u);
|
|
|
460 }
|
|
|
461
|
|
|
462
|
|
36
|
463 static void
|
|
348
|
464 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
465 {
|
|
|
466 ngx_http_request_t *r;
|
|
|
467 ngx_http_upstream_resolved_t *ur;
|
|
|
468
|
|
|
469 r = ctx->data;
|
|
|
470
|
|
|
471 r->upstream->resolved->ctx = NULL;
|
|
|
472
|
|
|
473 if (ctx->state) {
|
|
|
474 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
475 "%V could not be resolved (%i: %s)",
|
|
|
476 &ctx->name, ctx->state,
|
|
|
477 ngx_resolver_strerror(ctx->state));
|
|
|
478
|
|
|
479 ngx_resolve_name_done(ctx);
|
|
|
480 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
481 return;
|
|
|
482 }
|
|
|
483
|
|
|
484 ur = r->upstream->resolved;
|
|
|
485 ur->naddrs = ctx->naddrs;
|
|
|
486 ur->addrs = ctx->addrs;
|
|
|
487
|
|
|
488 #if (NGX_DEBUG)
|
|
|
489 {
|
|
|
490 in_addr_t addr;
|
|
|
491 ngx_uint_t i;
|
|
|
492
|
|
|
493 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
494 addr = ntohl(ur->addrs[i]);
|
|
|
495
|
|
|
496 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
497 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
498 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
499 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
500 }
|
|
|
501 }
|
|
|
502 #endif
|
|
|
503
|
|
|
504 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
505 ngx_resolve_name_done(ctx);
|
|
|
506 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
507 return;
|
|
|
508 }
|
|
|
509
|
|
|
510 ngx_resolve_name_done(ctx);
|
|
|
511
|
|
|
512 ngx_http_upstream_connect(r, r->upstream);
|
|
|
513 }
|
|
|
514
|
|
|
515
|
|
|
516 static void
|
|
426
|
517 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
518 {
|
|
|
519 ngx_connection_t *c;
|
|
|
520 ngx_http_request_t *r;
|
|
|
521 ngx_http_log_ctx_t *ctx;
|
|
|
522 ngx_http_upstream_t *u;
|
|
|
523
|
|
|
524 c = ev->data;
|
|
|
525 r = c->data;
|
|
|
526
|
|
|
527 u = r->upstream;
|
|
|
528 c = r->connection;
|
|
|
529
|
|
|
530 ctx = c->log->data;
|
|
|
531 ctx->current_request = r;
|
|
|
532
|
|
|
533 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
534 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
535
|
|
|
536 if (ev->write) {
|
|
|
537 u->write_event_handler(ev);
|
|
|
538
|
|
|
539 } else {
|
|
|
540 u->read_event_handler(ev);
|
|
|
541 }
|
|
|
542
|
|
|
543 ngx_http_run_posted_requests(c);
|
|
|
544 }
|
|
|
545
|
|
|
546
|
|
|
547 static void
|
|
58
|
548 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
549 {
|
|
|
550 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
551 }
|
|
|
552
|
|
|
553
|
|
|
554 static void
|
|
|
555 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
556 {
|
|
|
557 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
558 }
|
|
|
559
|
|
|
560
|
|
|
561 static void
|
|
|
562 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
563 ngx_event_t *ev)
|
|
28
|
564 {
|
|
|
565 int n;
|
|
|
566 char buf[1];
|
|
126
|
567 ngx_err_t err;
|
|
28
|
568 ngx_connection_t *c;
|
|
|
569 ngx_http_upstream_t *u;
|
|
|
570
|
|
76
|
571 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
572 "http upstream check client, write event:%d, \"%V\"",
|
|
|
573 ev->write, &r->uri);
|
|
28
|
574
|
|
58
|
575 c = r->connection;
|
|
32
|
576 u = r->upstream;
|
|
|
577
|
|
132
|
578 if (c->error) {
|
|
76
|
579 ngx_http_upstream_finalize_request(r, u,
|
|
|
580 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
581 return;
|
|
|
582 }
|
|
|
583
|
|
32
|
584 if (u->peer.connection == NULL) {
|
|
|
585 return;
|
|
|
586 }
|
|
|
587
|
|
28
|
588 #if (NGX_HAVE_KQUEUE)
|
|
|
589
|
|
|
590 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
591
|
|
|
592 if (!ev->pending_eof) {
|
|
|
593 return;
|
|
|
594 }
|
|
|
595
|
|
|
596 ev->eof = 1;
|
|
132
|
597 c->error = 1;
|
|
28
|
598
|
|
|
599 if (ev->kq_errno) {
|
|
|
600 ev->error = 1;
|
|
|
601 }
|
|
|
602
|
|
340
|
603 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
604 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
605 "kevent() reported that client closed prematurely "
|
|
|
606 "connection, so upstream connection is closed too");
|
|
28
|
607 ngx_http_upstream_finalize_request(r, u,
|
|
|
608 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
609 return;
|
|
|
610 }
|
|
|
611
|
|
|
612 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
613 "kevent() reported that client closed "
|
|
|
614 "prematurely connection");
|
|
|
615
|
|
|
616 if (u->peer.connection == NULL) {
|
|
|
617 ngx_http_upstream_finalize_request(r, u,
|
|
|
618 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
619 return;
|
|
|
620 }
|
|
|
621
|
|
|
622 return;
|
|
|
623 }
|
|
|
624
|
|
|
625 #endif
|
|
|
626
|
|
|
627 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
628
|
|
|
629 err = ngx_socket_errno;
|
|
|
630
|
|
286
|
631 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
632 "http upstream recv(): %d", n);
|
|
|
633
|
|
28
|
634 /*
|
|
|
635 * we do not need to disable the write event because
|
|
|
636 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
637 */
|
|
|
638
|
|
|
639 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
640 return;
|
|
|
641 }
|
|
|
642
|
|
|
643 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
644 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
645 ngx_http_upstream_finalize_request(r, u,
|
|
|
646 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
647 return;
|
|
|
648 }
|
|
|
649 }
|
|
|
650
|
|
|
651 if (n > 0) {
|
|
|
652 return;
|
|
|
653 }
|
|
|
654
|
|
|
655 if (n == -1) {
|
|
|
656 if (err == NGX_EAGAIN) {
|
|
|
657 return;
|
|
|
658 }
|
|
|
659
|
|
|
660 ev->error = 1;
|
|
|
661
|
|
32
|
662 } else { /* n == 0 */
|
|
28
|
663 err = 0;
|
|
|
664 }
|
|
|
665
|
|
78
|
666 ev->eof = 1;
|
|
132
|
667 c->error = 1;
|
|
78
|
668
|
|
340
|
669 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
670 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
671 "client closed prematurely connection, "
|
|
|
672 "so upstream connection is closed too");
|
|
|
673 ngx_http_upstream_finalize_request(r, u,
|
|
|
674 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
675 return;
|
|
|
676 }
|
|
|
677
|
|
|
678 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
679 "client closed prematurely connection");
|
|
|
680
|
|
|
681 if (u->peer.connection == NULL) {
|
|
|
682 ngx_http_upstream_finalize_request(r, u,
|
|
|
683 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
684 return;
|
|
|
685 }
|
|
|
686 }
|
|
|
687
|
|
|
688
|
|
36
|
689 static void
|
|
|
690 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
691 {
|
|
140
|
692 ngx_int_t rc;
|
|
214
|
693 ngx_time_t *tp;
|
|
140
|
694 ngx_connection_t *c;
|
|
28
|
695
|
|
32
|
696 r->connection->log->action = "connecting to upstream";
|
|
28
|
697
|
|
|
698 r->connection->single_connection = 0;
|
|
|
699
|
|
262
|
700 if (u->state && u->state->response_sec) {
|
|
214
|
701 tp = ngx_timeofday();
|
|
262
|
702 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
703 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
704 }
|
|
|
705
|
|
296
|
706 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
707 if (u->state == NULL) {
|
|
|
708 ngx_http_upstream_finalize_request(r, u,
|
|
|
709 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
710 return;
|
|
|
711 }
|
|
|
712
|
|
|
713 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
714
|
|
|
715 tp = ngx_timeofday();
|
|
262
|
716 u->state->response_sec = tp->sec;
|
|
|
717 u->state->response_msec = tp->msec;
|
|
214
|
718
|
|
28
|
719 rc = ngx_event_connect_peer(&u->peer);
|
|
|
720
|
|
|
721 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
722 "http upstream connect: %i", rc);
|
|
|
723
|
|
|
724 if (rc == NGX_ERROR) {
|
|
|
725 ngx_http_upstream_finalize_request(r, u,
|
|
|
726 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
727 return;
|
|
|
728 }
|
|
|
729
|
|
356
|
730 u->state->peer = u->peer.name;
|
|
|
731
|
|
92
|
732 if (rc == NGX_BUSY) {
|
|
|
733 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
734 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
735 return;
|
|
92
|
736 }
|
|
|
737
|
|
326
|
738 if (rc == NGX_DECLINED) {
|
|
28
|
739 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
740 return;
|
|
|
741 }
|
|
|
742
|
|
126
|
743 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
744
|
|
28
|
745 c = u->peer.connection;
|
|
|
746
|
|
|
747 c->data = r;
|
|
140
|
748
|
|
426
|
749 c->write->handler = ngx_http_upstream_handler;
|
|
|
750 c->read->handler = ngx_http_upstream_handler;
|
|
|
751
|
|
|
752 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
753 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
754
|
|
326
|
755 c->sendfile &= r->connection->sendfile;
|
|
372
|
756 u->output.sendfile = c->sendfile;
|
|
28
|
757
|
|
|
758 c->pool = r->pool;
|
|
|
759 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
760
|
|
|
761 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
762
|
|
|
763 u->writer.out = NULL;
|
|
|
764 u->writer.last = &u->writer.out;
|
|
|
765 u->writer.connection = c;
|
|
|
766 u->writer.limit = 0;
|
|
|
767
|
|
|
768 if (u->request_sent) {
|
|
58
|
769 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
770 ngx_http_upstream_finalize_request(r, u,
|
|
|
771 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
772 return;
|
|
|
773 }
|
|
28
|
774 }
|
|
|
775
|
|
276
|
776 if (r->request_body
|
|
|
777 && r->request_body->buf
|
|
|
778 && r->request_body->temp_file
|
|
|
779 && r == r->main)
|
|
|
780 {
|
|
122
|
781 /*
|
|
|
782 * the r->request_body->buf can be reused for one request only,
|
|
|
783 * the subrequests should allocate their own temporay bufs
|
|
|
784 */
|
|
|
785
|
|
|
786 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
787 if (u->output.free == NULL) {
|
|
|
788 ngx_http_upstream_finalize_request(r, u,
|
|
|
789 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
790 return;
|
|
28
|
791 }
|
|
122
|
792
|
|
|
793 u->output.free->buf = r->request_body->buf;
|
|
|
794 u->output.free->next = NULL;
|
|
|
795 u->output.allocated = 1;
|
|
|
796
|
|
|
797 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
798 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
799 r->request_body->buf->tag = u->output.tag;
|
|
28
|
800 }
|
|
|
801
|
|
|
802 u->request_sent = 0;
|
|
|
803
|
|
|
804 if (rc == NGX_AGAIN) {
|
|
|
805 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
806 return;
|
|
|
807 }
|
|
|
808
|
|
126
|
809 #if (NGX_HTTP_SSL)
|
|
|
810
|
|
348
|
811 if (u->ssl && c->ssl == NULL) {
|
|
140
|
812 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
813 return;
|
|
|
814 }
|
|
|
815
|
|
|
816 #endif
|
|
|
817
|
|
28
|
818 ngx_http_upstream_send_request(r, u);
|
|
|
819 }
|
|
|
820
|
|
|
821
|
|
126
|
822 #if (NGX_HTTP_SSL)
|
|
|
823
|
|
|
824 static void
|
|
140
|
825 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
826 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
827 {
|
|
260
|
828 ngx_int_t rc;
|
|
140
|
829
|
|
|
830 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
831 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
832 == NGX_ERROR)
|
|
|
833 {
|
|
|
834 ngx_http_upstream_finalize_request(r, u,
|
|
|
835 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
836 return;
|
|
|
837 }
|
|
|
838
|
|
|
839 c->sendfile = 0;
|
|
168
|
840 u->output.sendfile = 0;
|
|
140
|
841
|
|
398
|
842 if (u->conf->ssl_session_reuse) {
|
|
|
843 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
844 ngx_http_upstream_finalize_request(r, u,
|
|
|
845 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
846 return;
|
|
|
847 }
|
|
140
|
848 }
|
|
|
849
|
|
190
|
850 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
851
|
|
140
|
852 rc = ngx_ssl_handshake(c);
|
|
|
853
|
|
|
854 if (rc == NGX_AGAIN) {
|
|
|
855 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
856 return;
|
|
|
857 }
|
|
|
858
|
|
|
859 ngx_http_upstream_ssl_handshake(c);
|
|
|
860 }
|
|
|
861
|
|
|
862
|
|
|
863 static void
|
|
126
|
864 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
865 {
|
|
|
866 ngx_http_request_t *r;
|
|
|
867 ngx_http_upstream_t *u;
|
|
|
868
|
|
|
869 r = c->data;
|
|
|
870 u = r->upstream;
|
|
|
871
|
|
|
872 if (c->ssl->handshaked) {
|
|
|
873
|
|
398
|
874 if (u->conf->ssl_session_reuse) {
|
|
|
875 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
876 }
|
|
260
|
877
|
|
426
|
878 c->write->handler = ngx_http_upstream_handler;
|
|
|
879 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
880
|
|
|
881 ngx_http_upstream_send_request(r, u);
|
|
|
882
|
|
|
883 return;
|
|
|
884 }
|
|
|
885
|
|
|
886 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
887
|
|
|
888 }
|
|
|
889
|
|
|
890 #endif
|
|
|
891
|
|
|
892
|
|
58
|
893 static ngx_int_t
|
|
36
|
894 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
895 {
|
|
|
896 ngx_chain_t *cl;
|
|
|
897
|
|
58
|
898 if (u->reinit_request(r) != NGX_OK) {
|
|
|
899 return NGX_ERROR;
|
|
|
900 }
|
|
|
901
|
|
356
|
902 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
903
|
|
|
904 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
905 sizeof(ngx_table_elt_t))
|
|
|
906 != NGX_OK)
|
|
58
|
907 {
|
|
|
908 return NGX_ERROR;
|
|
28
|
909 }
|
|
|
910
|
|
|
911 /* reinit the request chain */
|
|
126
|
912
|
|
58
|
913 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
914 cl->buf->pos = cl->buf->start;
|
|
|
915 cl->buf->file_pos = 0;
|
|
|
916 }
|
|
|
917
|
|
58
|
918 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
919
|
|
122
|
920 if (r->request_body && r->request_body->temp_file
|
|
146
|
921 && r != r->main && u->output.buf)
|
|
122
|
922 {
|
|
|
923 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
924 if (u->output.free == NULL) {
|
|
|
925 return NGX_ERROR;
|
|
58
|
926 }
|
|
122
|
927
|
|
|
928 u->output.free->buf = u->output.buf;
|
|
|
929 u->output.free->next = NULL;
|
|
|
930
|
|
|
931 u->output.buf->pos = u->output.buf->start;
|
|
|
932 u->output.buf->last = u->output.buf->start;
|
|
58
|
933 }
|
|
28
|
934
|
|
|
935 u->output.buf = NULL;
|
|
|
936 u->output.in = NULL;
|
|
|
937 u->output.busy = NULL;
|
|
126
|
938
|
|
130
|
939 /* reinit u->buffer */
|
|
126
|
940
|
|
28
|
941 #if 0
|
|
|
942 if (u->cache) {
|
|
130
|
943 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
944 u->buffer.last = u->buffer.pos;
|
|
28
|
945
|
|
|
946 } else {
|
|
130
|
947 u->buffer.pos = u->buffer.start;
|
|
|
948 u->buffer.last = u->buffer.start;
|
|
28
|
949 }
|
|
|
950 #else
|
|
58
|
951
|
|
130
|
952 u->buffer.pos = u->buffer.start;
|
|
|
953 u->buffer.last = u->buffer.start;
|
|
58
|
954
|
|
28
|
955 #endif
|
|
|
956
|
|
58
|
957 return NGX_OK;
|
|
28
|
958 }
|
|
|
959
|
|
|
960
|
|
36
|
961 static void
|
|
|
962 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
963 {
|
|
294
|
964 ngx_int_t rc;
|
|
32
|
965 ngx_connection_t *c;
|
|
126
|
966
|
|
28
|
967 c = u->peer.connection;
|
|
|
968
|
|
|
969 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
970 "http upstream send request");
|
|
|
971
|
|
294
|
972 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
973 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
974 return;
|
|
28
|
975 }
|
|
|
976
|
|
32
|
977 c->log->action = "sending request to upstream";
|
|
28
|
978
|
|
58
|
979 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
980
|
|
|
981 u->request_sent = 1;
|
|
|
982
|
|
|
983 if (rc == NGX_ERROR) {
|
|
|
984 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
985 return;
|
|
|
986 }
|
|
|
987
|
|
|
988 if (c->write->timer_set) {
|
|
|
989 ngx_del_timer(c->write);
|
|
|
990 }
|
|
|
991
|
|
|
992 if (rc == NGX_AGAIN) {
|
|
|
993 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
994
|
|
|
995 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
996 {
|
|
|
997 ngx_http_upstream_finalize_request(r, u,
|
|
|
998 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
999 return;
|
|
|
1000 }
|
|
|
1001
|
|
|
1002 return;
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 /* rc == NGX_OK */
|
|
|
1006
|
|
|
1007 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1008 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1009 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1010 ngx_tcp_push_n " failed");
|
|
|
1011 ngx_http_upstream_finalize_request(r, u,
|
|
|
1012 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1013 return;
|
|
28
|
1014 }
|
|
|
1015
|
|
|
1016 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1017 }
|
|
126
|
1018
|
|
28
|
1019 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1020
|
|
|
1021 #if 1
|
|
|
1022 if (c->read->ready) {
|
|
126
|
1023
|
|
28
|
1024 /* post aio operation */
|
|
|
1025
|
|
|
1026 /*
|
|
|
1027 * TODO comment
|
|
|
1028 * although we can post aio operation just in the end
|
|
|
1029 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1030 * it's better to do here because we postpone header buffer allocation
|
|
|
1031 */
|
|
|
1032
|
|
|
1033 ngx_http_upstream_process_header(c->read);
|
|
|
1034 return;
|
|
|
1035 }
|
|
|
1036 #endif
|
|
|
1037
|
|
426
|
1038 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1039
|
|
58
|
1040 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
1041 ngx_http_upstream_finalize_request(r, u,
|
|
|
1042 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1043 return;
|
|
|
1044 }
|
|
|
1045 }
|
|
|
1046
|
|
|
1047
|
|
36
|
1048 static void
|
|
|
1049 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
1050 {
|
|
|
1051 ngx_connection_t *c;
|
|
|
1052 ngx_http_request_t *r;
|
|
|
1053 ngx_http_upstream_t *u;
|
|
|
1054
|
|
|
1055 c = wev->data;
|
|
|
1056 r = c->data;
|
|
|
1057 u = r->upstream;
|
|
|
1058
|
|
|
1059 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1060 "http upstream send request handler");
|
|
|
1061
|
|
|
1062 if (wev->timedout) {
|
|
|
1063 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1064 return;
|
|
|
1065 }
|
|
|
1066
|
|
140
|
1067 #if (NGX_HTTP_SSL)
|
|
|
1068
|
|
348
|
1069 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1070 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1071 return;
|
|
|
1072 }
|
|
|
1073
|
|
|
1074 #endif
|
|
|
1075
|
|
200
|
1076 if (u->header_sent) {
|
|
426
|
1077 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1078
|
|
|
1079 (void) ngx_handle_write_event(wev, 0);
|
|
|
1080
|
|
|
1081 return;
|
|
|
1082 }
|
|
|
1083
|
|
28
|
1084 ngx_http_upstream_send_request(r, u);
|
|
|
1085 }
|
|
|
1086
|
|
|
1087
|
|
36
|
1088 static void
|
|
|
1089 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
1090 {
|
|
64
|
1091 ssize_t n;
|
|
|
1092 ngx_int_t rc;
|
|
122
|
1093 ngx_str_t *uri, args;
|
|
198
|
1094 ngx_uint_t i, flags;
|
|
64
|
1095 ngx_list_part_t *part;
|
|
|
1096 ngx_table_elt_t *h;
|
|
|
1097 ngx_connection_t *c;
|
|
|
1098 ngx_http_request_t *r;
|
|
|
1099 ngx_http_upstream_t *u;
|
|
|
1100 ngx_http_upstream_header_t *hh;
|
|
|
1101 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1102
|
|
|
1103 c = rev->data;
|
|
|
1104 r = c->data;
|
|
|
1105 u = r->upstream;
|
|
|
1106
|
|
|
1107 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
1108 "http upstream process header");
|
|
28
|
1109
|
|
32
|
1110 c->log->action = "reading response header from upstream";
|
|
28
|
1111
|
|
|
1112 if (rev->timedout) {
|
|
|
1113 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1114 return;
|
|
|
1115 }
|
|
126
|
1116
|
|
294
|
1117 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1118 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1119 return;
|
|
|
1120 }
|
|
|
1121
|
|
130
|
1122 if (u->buffer.start == NULL) {
|
|
|
1123 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1124 if (u->buffer.start == NULL) {
|
|
28
|
1125 ngx_http_upstream_finalize_request(r, u,
|
|
|
1126 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1127 return;
|
|
|
1128 }
|
|
|
1129
|
|
130
|
1130 u->buffer.pos = u->buffer.start;
|
|
|
1131 u->buffer.last = u->buffer.start;
|
|
|
1132 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1133 u->buffer.temporary = 1;
|
|
|
1134
|
|
|
1135 u->buffer.tag = u->output.tag;
|
|
28
|
1136
|
|
356
|
1137 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1138 sizeof(ngx_table_elt_t))
|
|
|
1139 != NGX_OK)
|
|
58
|
1140 {
|
|
|
1141 ngx_http_upstream_finalize_request(r, u,
|
|
|
1142 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1143 return;
|
|
|
1144 }
|
|
|
1145
|
|
28
|
1146 #if 0
|
|
|
1147 if (u->cache) {
|
|
130
|
1148 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1149 u->buffer.last = u->buffer.pos;
|
|
28
|
1150 }
|
|
|
1151 #endif
|
|
|
1152 }
|
|
|
1153
|
|
424
|
1154 for ( ;; ) {
|
|
|
1155
|
|
|
1156 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1157
|
|
|
1158 if (n == NGX_AGAIN) {
|
|
28
|
1159 #if 0
|
|
424
|
1160 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1161 #endif
|
|
|
1162
|
|
424
|
1163 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1164 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1165 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1166 return;
|
|
|
1167 }
|
|
|
1168
|
|
|
1169 return;
|
|
|
1170 }
|
|
|
1171
|
|
|
1172 if (n == 0) {
|
|
|
1173 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1174 "upstream prematurely closed connection");
|
|
|
1175 }
|
|
|
1176
|
|
|
1177 if (n == NGX_ERROR || n == 0) {
|
|
|
1178 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1179 return;
|
|
|
1180 }
|
|
|
1181
|
|
424
|
1182 u->buffer.last += n;
|
|
28
|
1183
|
|
|
1184 #if 0
|
|
424
|
1185 u->valid_header_in = 0;
|
|
|
1186
|
|
|
1187 u->peer.cached = 0;
|
|
28
|
1188 #endif
|
|
|
1189
|
|
424
|
1190 rc = u->process_header(r);
|
|
|
1191
|
|
|
1192 if (rc == NGX_AGAIN) {
|
|
|
1193
|
|
|
1194 if (u->buffer.pos == u->buffer.end) {
|
|
|
1195 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1196 "upstream sent too big header");
|
|
|
1197
|
|
|
1198 ngx_http_upstream_next(r, u,
|
|
|
1199 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1200 return;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 continue;
|
|
28
|
1204 }
|
|
|
1205
|
|
424
|
1206 break;
|
|
28
|
1207 }
|
|
|
1208
|
|
|
1209 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1210 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1211 return;
|
|
|
1212 }
|
|
|
1213
|
|
356
|
1214 if (rc == NGX_ERROR) {
|
|
28
|
1215 ngx_http_upstream_finalize_request(r, u,
|
|
|
1216 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1217 return;
|
|
|
1218 }
|
|
|
1219
|
|
|
1220 /* rc == NGX_OK */
|
|
|
1221
|
|
412
|
1222 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1223
|
|
|
1224 if (r->subrequest_in_memory) {
|
|
|
1225 u->buffer.last = u->buffer.pos;
|
|
58
|
1226 }
|
|
|
1227
|
|
412
|
1228 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1229 return;
|
|
|
1230 }
|
|
|
1231
|
|
412
|
1232 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1233 return;
|
|
|
1234 }
|
|
58
|
1235 }
|
|
|
1236
|
|
230
|
1237 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1238
|
|
356
|
1239 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1240
|
|
64
|
1241 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1242
|
|
356
|
1243 part = &u->headers_in.headers.part;
|
|
64
|
1244 h = part->elts;
|
|
|
1245
|
|
|
1246 for (i = 0; /* void */; i++) {
|
|
|
1247
|
|
|
1248 if (i >= part->nelts) {
|
|
|
1249 if (part->next == NULL) {
|
|
|
1250 break;
|
|
|
1251 }
|
|
126
|
1252
|
|
64
|
1253 part = part->next;
|
|
|
1254 h = part->elts;
|
|
|
1255 i = 0;
|
|
|
1256 }
|
|
|
1257
|
|
198
|
1258 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1259 h[i].lowcase_key, h[i].key.len);
|
|
|
1260
|
|
|
1261 if (hh && hh->redirect) {
|
|
|
1262 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1263 ngx_http_finalize_request(r,
|
|
244
|
1264 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1265 return;
|
|
|
1266 }
|
|
|
1267 }
|
|
|
1268 }
|
|
|
1269
|
|
356
|
1270 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1271 args.len = 0;
|
|
|
1272 args.data = NULL;
|
|
|
1273 flags = 0;
|
|
|
1274
|
|
|
1275 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1276 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1277 return;
|
|
|
1278 }
|
|
|
1279
|
|
|
1280 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1281 r->zero_in_uri = 1;
|
|
|
1282 }
|
|
|
1283
|
|
202
|
1284 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1285 r->method = NGX_HTTP_GET;
|
|
|
1286 }
|
|
|
1287
|
|
398
|
1288 r->valid_unparsed_uri = 0;
|
|
|
1289
|
|
122
|
1290 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1291 return;
|
|
|
1292 }
|
|
|
1293
|
|
356
|
1294 part = &u->headers_in.headers.part;
|
|
58
|
1295 h = part->elts;
|
|
|
1296
|
|
|
1297 for (i = 0; /* void */; i++) {
|
|
28
|
1298
|
|
58
|
1299 if (i >= part->nelts) {
|
|
|
1300 if (part->next == NULL) {
|
|
|
1301 break;
|
|
|
1302 }
|
|
126
|
1303
|
|
58
|
1304 part = part->next;
|
|
|
1305 h = part->elts;
|
|
|
1306 i = 0;
|
|
|
1307 }
|
|
|
1308
|
|
198
|
1309 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1310 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1311 {
|
|
198
|
1312 continue;
|
|
|
1313 }
|
|
|
1314
|
|
|
1315 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1316 h[i].lowcase_key, h[i].key.len);
|
|
|
1317
|
|
|
1318 if (hh) {
|
|
|
1319 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1320 ngx_http_upstream_finalize_request(r, u,
|
|
|
1321 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1322 return;
|
|
|
1323 }
|
|
|
1324
|
|
|
1325 continue;
|
|
|
1326 }
|
|
|
1327
|
|
|
1328 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1329 ngx_http_upstream_finalize_request(r, u,
|
|
|
1330 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1331 return;
|
|
|
1332 }
|
|
|
1333 }
|
|
|
1334
|
|
198
|
1335 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1336 r->headers_out.server->hash = 0;
|
|
|
1337 }
|
|
|
1338
|
|
|
1339 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1340 r->headers_out.date->hash = 0;
|
|
|
1341 }
|
|
|
1342
|
|
78
|
1343 r->headers_out.status = u->headers_in.status_n;
|
|
|
1344 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1345
|
|
364
|
1346 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1347
|
|
130
|
1348 if (r->headers_out.content_length_n != -1) {
|
|
|
1349 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1350
|
|
|
1351 } else {
|
|
|
1352 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1353 }
|
|
|
1354
|
|
248
|
1355 if (!r->subrequest_in_memory) {
|
|
|
1356 ngx_http_upstream_send_response(r, u);
|
|
|
1357 return;
|
|
|
1358 }
|
|
|
1359
|
|
|
1360 /* subrequest content in memory */
|
|
|
1361
|
|
|
1362 if (u->input_filter == NULL) {
|
|
|
1363 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1364 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1365 u->input_filter_ctx = r;
|
|
|
1366 }
|
|
|
1367
|
|
|
1368 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1369 ngx_http_upstream_finalize_request(r, u,
|
|
|
1370 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1371 return;
|
|
|
1372 }
|
|
|
1373
|
|
420
|
1374 n = u->buffer.last - u->buffer.pos;
|
|
|
1375
|
|
|
1376 if (n) {
|
|
|
1377 u->buffer.last -= n;
|
|
|
1378
|
|
|
1379 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1380 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1381 return;
|
|
|
1382 }
|
|
|
1383
|
|
420
|
1384 if (u->length == 0) {
|
|
|
1385 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1386 return;
|
|
|
1387 }
|
|
248
|
1388 }
|
|
|
1389
|
|
426
|
1390 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1391
|
|
|
1392 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1393 }
|
|
|
1394
|
|
|
1395
|
|
294
|
1396 static ngx_int_t
|
|
412
|
1397 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1398 {
|
|
|
1399 ngx_uint_t status;
|
|
|
1400 ngx_http_upstream_next_t *un;
|
|
|
1401
|
|
|
1402 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
|
1403 return NGX_DECLINED;
|
|
|
1404 }
|
|
|
1405
|
|
|
1406 status = u->headers_in.status_n;
|
|
|
1407
|
|
|
1408 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1409
|
|
|
1410 if (status != un->status) {
|
|
|
1411 continue;
|
|
|
1412 }
|
|
|
1413
|
|
|
1414 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1415 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1416 return NGX_OK;
|
|
|
1417 }
|
|
|
1418
|
|
|
1419 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1420 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1421 return NGX_OK;
|
|
|
1422 }
|
|
|
1423
|
|
|
1424 #if (NGX_HTTP_CACHE)
|
|
|
1425
|
|
|
1426 if (u->peer.tries == 0 && u->stale && (u->conf->use_stale & un->mask)) {
|
|
|
1427 ngx_http_upstream_finalize_request(r, u,
|
|
|
1428 ngx_http_send_cached_response(r));
|
|
|
1429 return NGX_OK;
|
|
|
1430 }
|
|
|
1431
|
|
|
1432 #endif
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 return NGX_DECLINED;
|
|
|
1436 }
|
|
|
1437
|
|
|
1438
|
|
|
1439 static ngx_int_t
|
|
|
1440 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1441 ngx_http_upstream_t *u)
|
|
|
1442 {
|
|
|
1443 ngx_int_t status;
|
|
|
1444 ngx_uint_t i;
|
|
|
1445 ngx_table_elt_t *h;
|
|
|
1446 ngx_http_err_page_t *err_page;
|
|
|
1447 ngx_http_core_loc_conf_t *clcf;
|
|
|
1448
|
|
|
1449 if (!u->conf->intercept_errors) {
|
|
|
1450 return NGX_DECLINED;
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1454
|
|
|
1455 if (clcf->error_pages == NULL) {
|
|
|
1456 return NGX_DECLINED;
|
|
|
1457 }
|
|
|
1458
|
|
|
1459 status = u->headers_in.status_n;
|
|
|
1460
|
|
|
1461 err_page = clcf->error_pages->elts;
|
|
|
1462 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1463
|
|
|
1464 if (err_page[i].status == status) {
|
|
|
1465
|
|
|
1466 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1467
|
|
|
1468 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1469
|
|
|
1470 if (h == NULL) {
|
|
|
1471 ngx_http_upstream_finalize_request(r, u,
|
|
|
1472 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1473 return NGX_OK;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 *h = *u->headers_in.www_authenticate;
|
|
|
1477
|
|
|
1478 r->headers_out.www_authenticate = h;
|
|
|
1479 }
|
|
|
1480
|
|
|
1481 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1482
|
|
|
1483 return NGX_OK;
|
|
|
1484 }
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 return NGX_DECLINED;
|
|
|
1488 }
|
|
|
1489
|
|
|
1490
|
|
|
1491 static ngx_int_t
|
|
294
|
1492 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1493 {
|
|
|
1494 int err;
|
|
|
1495 socklen_t len;
|
|
|
1496
|
|
|
1497 #if (NGX_HAVE_KQUEUE)
|
|
|
1498
|
|
|
1499 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1500 if (c->write->pending_eof) {
|
|
336
|
1501 c->log->action = "connecting to upstream";
|
|
296
|
1502 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1503 "kevent() reported that connect() failed");
|
|
|
1504 return NGX_ERROR;
|
|
|
1505 }
|
|
294
|
1506
|
|
|
1507 } else
|
|
|
1508 #endif
|
|
|
1509 {
|
|
296
|
1510 err = 0;
|
|
|
1511 len = sizeof(int);
|
|
|
1512
|
|
|
1513 /*
|
|
|
1514 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1515 * Solaris returns -1 and sets errno
|
|
|
1516 */
|
|
|
1517
|
|
|
1518 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1519 == -1)
|
|
|
1520 {
|
|
|
1521 err = ngx_errno;
|
|
|
1522 }
|
|
|
1523
|
|
|
1524 if (err) {
|
|
336
|
1525 c->log->action = "connecting to upstream";
|
|
296
|
1526 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1527 return NGX_ERROR;
|
|
|
1528 }
|
|
294
|
1529 }
|
|
|
1530
|
|
|
1531 return NGX_OK;
|
|
|
1532 }
|
|
|
1533
|
|
|
1534
|
|
248
|
1535 static void
|
|
|
1536 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1537 {
|
|
|
1538 size_t size;
|
|
|
1539 ssize_t n;
|
|
|
1540 ngx_buf_t *b;
|
|
|
1541 ngx_connection_t *c;
|
|
|
1542 ngx_http_request_t *r;
|
|
|
1543 ngx_http_upstream_t *u;
|
|
|
1544
|
|
|
1545 c = rev->data;
|
|
|
1546 r = c->data;
|
|
|
1547 u = r->upstream;
|
|
|
1548
|
|
|
1549 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1550 "http upstream process body on memory");
|
|
|
1551
|
|
|
1552 if (rev->timedout) {
|
|
|
1553 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1554 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1555 return;
|
|
|
1556 }
|
|
|
1557
|
|
|
1558 b = &u->buffer;
|
|
|
1559
|
|
|
1560 for ( ;; ) {
|
|
|
1561
|
|
|
1562 size = b->end - b->last;
|
|
|
1563
|
|
|
1564 if (size == 0) {
|
|
|
1565 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1566 "upstream buffer is too small to read repsonse");
|
|
|
1567 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1568 return;
|
|
|
1569 }
|
|
|
1570
|
|
|
1571 n = c->recv(c, b->last, size);
|
|
|
1572
|
|
|
1573 if (n == NGX_AGAIN) {
|
|
|
1574 break;
|
|
|
1575 }
|
|
|
1576
|
|
|
1577 if (n == 0 || n == NGX_ERROR) {
|
|
|
1578 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1579 return;
|
|
|
1580 }
|
|
|
1581
|
|
|
1582 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1583 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1584 return;
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 if (!rev->ready) {
|
|
|
1588 break;
|
|
|
1589 }
|
|
|
1590 }
|
|
|
1591
|
|
|
1592 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1593 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1594 return;
|
|
|
1595 }
|
|
|
1596
|
|
|
1597 if (rev->active) {
|
|
|
1598 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1599
|
|
|
1600 } else if (rev->timer_set) {
|
|
|
1601 ngx_del_timer(rev);
|
|
|
1602 }
|
|
230
|
1603 }
|
|
|
1604
|
|
|
1605
|
|
|
1606 static void
|
|
|
1607 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1608 {
|
|
|
1609 int tcp_nodelay;
|
|
|
1610 ssize_t size;
|
|
|
1611 ngx_int_t rc;
|
|
|
1612 ngx_event_pipe_t *p;
|
|
|
1613 ngx_connection_t *c;
|
|
|
1614 ngx_pool_cleanup_t *cl;
|
|
|
1615 ngx_pool_cleanup_file_t *clf;
|
|
|
1616 ngx_http_core_loc_conf_t *clcf;
|
|
|
1617
|
|
58
|
1618 rc = ngx_http_send_header(r);
|
|
28
|
1619
|
|
274
|
1620 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1621 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1622 return;
|
|
|
1623 }
|
|
|
1624
|
|
|
1625 u->header_sent = 1;
|
|
|
1626
|
|
122
|
1627 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1628 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1629 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1630 clf = cl->data;
|
|
|
1631
|
|
|
1632 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1633 cl->handler(clf);
|
|
|
1634 cl->handler = NULL;
|
|
208
|
1635 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1636 break;
|
|
|
1637 }
|
|
|
1638 }
|
|
|
1639 }
|
|
|
1640 }
|
|
|
1641
|
|
132
|
1642 c = r->connection;
|
|
|
1643
|
|
130
|
1644 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1645
|
|
198
|
1646 if (!u->buffering) {
|
|
130
|
1647
|
|
|
1648 if (u->input_filter == NULL) {
|
|
|
1649 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1650 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1651 u->input_filter_ctx = r;
|
|
|
1652 }
|
|
|
1653
|
|
426
|
1654 u->read_event_handler = ngx_http_upstream_process_non_buffered_body;
|
|
130
|
1655 r->write_event_handler =
|
|
|
1656 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1657
|
|
|
1658 r->limit_rate = 0;
|
|
|
1659
|
|
|
1660 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1661 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1662 return;
|
|
|
1663 }
|
|
|
1664
|
|
132
|
1665 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1666 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1667
|
|
|
1668 tcp_nodelay = 1;
|
|
|
1669
|
|
|
1670 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1671 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1672 {
|
|
|
1673 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1674 "setsockopt(TCP_NODELAY) failed");
|
|
|
1675 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1676 return;
|
|
|
1677 }
|
|
|
1678
|
|
|
1679 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1680 }
|
|
|
1681
|
|
130
|
1682 size = u->buffer.last - u->buffer.pos;
|
|
|
1683
|
|
|
1684 if (size) {
|
|
|
1685 u->buffer.last = u->buffer.pos;
|
|
|
1686
|
|
|
1687 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1688 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1689 return;
|
|
|
1690 }
|
|
|
1691
|
|
132
|
1692 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1693
|
|
|
1694 } else {
|
|
|
1695 u->buffer.pos = u->buffer.start;
|
|
|
1696 u->buffer.last = u->buffer.start;
|
|
|
1697
|
|
|
1698 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1699 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1700 return;
|
|
|
1701 }
|
|
336
|
1702
|
|
|
1703 if (u->peer.connection->read->ready) {
|
|
|
1704 ngx_http_upstream_process_non_buffered_body(
|
|
|
1705 u->peer.connection->read);
|
|
|
1706 }
|
|
130
|
1707 }
|
|
|
1708
|
|
|
1709 return;
|
|
|
1710 }
|
|
|
1711
|
|
28
|
1712 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1713
|
|
|
1714 #if 0
|
|
|
1715
|
|
|
1716 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1717 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1718 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1719 ngx_close_file_n " \"%s\" failed",
|
|
|
1720 u->cache->ctx.file.name.data);
|
|
|
1721 }
|
|
|
1722 }
|
|
|
1723
|
|
340
|
1724 if (u->cacheable) {
|
|
130
|
1725 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1726
|
|
|
1727 header->expires = u->cache->ctx.expires;
|
|
|
1728 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1729 header->date = u->cache->ctx.date;
|
|
|
1730 header->length = r->headers_out.content_length_n;
|
|
|
1731 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1732
|
|
|
1733 header->key_len = u->cache->ctx.key0.len;
|
|
|
1734 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1735 header->key[header->key_len] = LF;
|
|
|
1736 }
|
|
|
1737
|
|
|
1738 #endif
|
|
|
1739
|
|
130
|
1740 p = u->pipe;
|
|
28
|
1741
|
|
|
1742 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1743 p->output_ctx = r;
|
|
|
1744 p->tag = u->output.tag;
|
|
126
|
1745 p->bufs = u->conf->bufs;
|
|
28
|
1746 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1747 p->upstream = u->peer.connection;
|
|
132
|
1748 p->downstream = c;
|
|
28
|
1749 p->pool = r->pool;
|
|
132
|
1750 p->log = c->log;
|
|
126
|
1751
|
|
340
|
1752 p->cacheable = u->cacheable || u->store;
|
|
28
|
1753
|
|
50
|
1754 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1755 if (p->temp_file == NULL) {
|
|
28
|
1756 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1757 return;
|
|
|
1758 }
|
|
|
1759
|
|
|
1760 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1761 p->temp_file->file.log = c->log;
|
|
28
|
1762 p->temp_file->path = u->conf->temp_path;
|
|
|
1763 p->temp_file->pool = r->pool;
|
|
126
|
1764
|
|
340
|
1765 if (u->cacheable || u->store) {
|
|
28
|
1766 p->temp_file->persistent = 1;
|
|
318
|
1767
|
|
28
|
1768 } else {
|
|
216
|
1769 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1770 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1771 "to a temporary file";
|
|
|
1772 }
|
|
|
1773
|
|
|
1774 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1775 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1776
|
|
50
|
1777 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1778 if (p->preread_bufs == NULL) {
|
|
28
|
1779 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1780 return;
|
|
|
1781 }
|
|
318
|
1782
|
|
130
|
1783 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1784 p->preread_bufs->next = NULL;
|
|
130
|
1785 u->buffer.recycled = 1;
|
|
|
1786
|
|
|
1787 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1788
|
|
340
|
1789 if (u->cacheable) {
|
|
318
|
1790
|
|
28
|
1791 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1792 if (p->buf_to_file == NULL) {
|
|
|
1793 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1794 return;
|
|
|
1795 }
|
|
318
|
1796
|
|
130
|
1797 p->buf_to_file->pos = u->buffer.start;
|
|
|
1798 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1799 p->buf_to_file->temporary = 1;
|
|
|
1800 }
|
|
|
1801
|
|
|
1802 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1803 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1804 p->single_buf = 1;
|
|
|
1805 }
|
|
|
1806
|
|
|
1807 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1808 p->free_bufs = 1;
|
|
|
1809
|
|
|
1810 /*
|
|
130
|
1811 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1812 * as though these bytes were read
|
|
|
1813 */
|
|
130
|
1814 u->buffer.last = u->buffer.pos;
|
|
28
|
1815
|
|
|
1816 if (u->conf->cyclic_temp_file) {
|
|
|
1817
|
|
|
1818 /*
|
|
|
1819 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1820 * because the writing a new data may interfere with sendfile()
|
|
|
1821 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1822 */
|
|
|
1823
|
|
|
1824 p->cyclic_temp_file = 1;
|
|
132
|
1825 c->sendfile = 0;
|
|
28
|
1826
|
|
|
1827 } else {
|
|
|
1828 p->cyclic_temp_file = 0;
|
|
|
1829 }
|
|
|
1830
|
|
|
1831 p->read_timeout = u->conf->read_timeout;
|
|
|
1832 p->send_timeout = clcf->send_timeout;
|
|
|
1833 p->send_lowat = clcf->send_lowat;
|
|
|
1834
|
|
426
|
1835 u->read_event_handler = ngx_http_upstream_process_body;
|
|
58
|
1836 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1837
|
|
|
1838 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1839 }
|
|
|
1840
|
|
|
1841
|
|
36
|
1842 static void
|
|
130
|
1843 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1844 {
|
|
|
1845 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1846 }
|
|
|
1847
|
|
|
1848
|
|
|
1849 static void
|
|
|
1850 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1851 {
|
|
|
1852 size_t size;
|
|
|
1853 ssize_t n;
|
|
|
1854 ngx_buf_t *b;
|
|
132
|
1855 ngx_int_t rc;
|
|
130
|
1856 ngx_uint_t do_write;
|
|
260
|
1857 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1858 ngx_http_request_t *r;
|
|
|
1859 ngx_http_upstream_t *u;
|
|
|
1860 ngx_http_core_loc_conf_t *clcf;
|
|
|
1861
|
|
|
1862 c = ev->data;
|
|
244
|
1863 r = c->data;
|
|
|
1864 u = r->upstream;
|
|
130
|
1865
|
|
|
1866 if (ev->write) {
|
|
|
1867 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1868 "http upstream process non buffered downstream");
|
|
|
1869 c->log->action = "sending to client";
|
|
|
1870
|
|
|
1871 } else {
|
|
|
1872 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1873 "http upstream process non buffered upstream");
|
|
|
1874 c->log->action = "reading upstream";
|
|
|
1875 }
|
|
|
1876
|
|
|
1877 if (ev->timedout) {
|
|
|
1878 if (ev->write) {
|
|
|
1879 c->timedout = 1;
|
|
160
|
1880 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1881
|
|
130
|
1882 } else {
|
|
160
|
1883 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1884 }
|
|
244
|
1885
|
|
|
1886 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1887 return;
|
|
130
|
1888 }
|
|
|
1889
|
|
260
|
1890 downstream = r->connection;
|
|
|
1891 upstream = u->peer.connection;
|
|
130
|
1892
|
|
|
1893 b = &u->buffer;
|
|
|
1894
|
|
|
1895 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1896
|
|
206
|
1897 do_write = ev->write || u->length == 0;
|
|
130
|
1898
|
|
|
1899 for ( ;; ) {
|
|
|
1900
|
|
|
1901 if (do_write) {
|
|
|
1902
|
|
|
1903 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1904 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1905
|
|
260
|
1906 if (downstream->destroyed) {
|
|
132
|
1907 return;
|
|
|
1908 }
|
|
|
1909
|
|
|
1910 if (rc == NGX_ERROR) {
|
|
130
|
1911 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1912 return;
|
|
|
1913 }
|
|
|
1914
|
|
|
1915 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1916 &u->out_bufs, u->output.tag);
|
|
|
1917 }
|
|
|
1918
|
|
|
1919 if (u->busy_bufs == NULL) {
|
|
|
1920
|
|
|
1921 if (u->length == 0
|
|
260
|
1922 || upstream->read->eof
|
|
|
1923 || upstream->read->error)
|
|
130
|
1924 {
|
|
|
1925 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1926 return;
|
|
|
1927 }
|
|
|
1928
|
|
|
1929 b->pos = b->start;
|
|
|
1930 b->last = b->start;
|
|
|
1931 }
|
|
|
1932 }
|
|
|
1933
|
|
|
1934 size = b->end - b->last;
|
|
|
1935
|
|
|
1936 if (size > u->length) {
|
|
|
1937 size = u->length;
|
|
|
1938 }
|
|
|
1939
|
|
260
|
1940 if (size && upstream->read->ready) {
|
|
|
1941
|
|
|
1942 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1943
|
|
|
1944 if (n == NGX_AGAIN) {
|
|
|
1945 break;
|
|
|
1946 }
|
|
|
1947
|
|
|
1948 if (n > 0) {
|
|
|
1949 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1950 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1951 return;
|
|
|
1952 }
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 do_write = 1;
|
|
|
1956
|
|
|
1957 continue;
|
|
|
1958 }
|
|
|
1959
|
|
|
1960 break;
|
|
|
1961 }
|
|
|
1962
|
|
260
|
1963 if (downstream->data == r) {
|
|
|
1964 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
1965 != NGX_OK)
|
|
132
|
1966 {
|
|
|
1967 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1968 return;
|
|
|
1969 }
|
|
130
|
1970 }
|
|
|
1971
|
|
276
|
1972 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1973 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1974
|
|
|
1975 } else if (downstream->write->timer_set) {
|
|
|
1976 ngx_del_timer(downstream->write);
|
|
130
|
1977 }
|
|
|
1978
|
|
426
|
1979 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
1980 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1981 return;
|
|
|
1982 }
|
|
|
1983
|
|
276
|
1984 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1985 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1986
|
|
|
1987 } else if (upstream->read->timer_set) {
|
|
|
1988 ngx_del_timer(upstream->read);
|
|
130
|
1989 }
|
|
|
1990 }
|
|
|
1991
|
|
|
1992
|
|
|
1993 static ngx_int_t
|
|
|
1994 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1995 {
|
|
|
1996 return NGX_OK;
|
|
|
1997 }
|
|
|
1998
|
|
|
1999
|
|
|
2000 static ngx_int_t
|
|
|
2001 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2002 {
|
|
|
2003 ngx_http_request_t *r = data;
|
|
|
2004
|
|
|
2005 ngx_buf_t *b;
|
|
|
2006 ngx_chain_t *cl, **ll;
|
|
|
2007 ngx_http_upstream_t *u;
|
|
|
2008
|
|
|
2009 u = r->upstream;
|
|
|
2010
|
|
|
2011 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2012 ll = &cl->next;
|
|
|
2013 }
|
|
|
2014
|
|
|
2015 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2016 if (cl == NULL) {
|
|
|
2017 return NGX_ERROR;
|
|
|
2018 }
|
|
|
2019
|
|
|
2020 *ll = cl;
|
|
|
2021
|
|
|
2022 cl->buf->flush = 1;
|
|
|
2023 cl->buf->memory = 1;
|
|
|
2024
|
|
|
2025 b = &u->buffer;
|
|
|
2026
|
|
|
2027 cl->buf->pos = b->last;
|
|
|
2028 b->last += bytes;
|
|
|
2029 cl->buf->last = b->last;
|
|
366
|
2030 cl->buf->tag = u->output.tag;
|
|
130
|
2031
|
|
|
2032 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2033 return NGX_OK;
|
|
|
2034 }
|
|
|
2035
|
|
|
2036 u->length -= bytes;
|
|
|
2037
|
|
|
2038 return NGX_OK;
|
|
|
2039 }
|
|
|
2040
|
|
|
2041
|
|
|
2042 static void
|
|
58
|
2043 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2044 {
|
|
|
2045 ngx_http_upstream_process_body(r->connection->write);
|
|
|
2046 }
|
|
|
2047
|
|
|
2048
|
|
|
2049 static void
|
|
36
|
2050 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
2051 {
|
|
364
|
2052 ngx_temp_file_t *tf;
|
|
58
|
2053 ngx_event_pipe_t *p;
|
|
132
|
2054 ngx_connection_t *c, *downstream;
|
|
28
|
2055 ngx_http_request_t *r;
|
|
|
2056 ngx_http_upstream_t *u;
|
|
|
2057
|
|
|
2058 c = ev->data;
|
|
|
2059 r = c->data;
|
|
|
2060 u = r->upstream;
|
|
132
|
2061 downstream = r->connection;
|
|
28
|
2062
|
|
|
2063 if (ev->write) {
|
|
32
|
2064 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2065 "http upstream process downstream");
|
|
|
2066 c->log->action = "sending to client";
|
|
126
|
2067
|
|
28
|
2068 } else {
|
|
32
|
2069 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2070 "http upstream process upstream");
|
|
|
2071 c->log->action = "reading upstream";
|
|
28
|
2072 }
|
|
126
|
2073
|
|
130
|
2074 p = u->pipe;
|
|
28
|
2075
|
|
|
2076 if (ev->timedout) {
|
|
|
2077 if (ev->write) {
|
|
76
|
2078 if (ev->delayed) {
|
|
|
2079
|
|
|
2080 ev->timedout = 0;
|
|
|
2081 ev->delayed = 0;
|
|
|
2082
|
|
|
2083 if (!ev->ready) {
|
|
|
2084 ngx_add_timer(ev, p->send_timeout);
|
|
|
2085
|
|
426
|
2086 if (ngx_handle_write_event(ev, p->send_lowat) != NGX_OK) {
|
|
76
|
2087 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2088 return;
|
|
|
2089 }
|
|
|
2090
|
|
|
2091 return;
|
|
|
2092 }
|
|
|
2093
|
|
|
2094 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2095
|
|
|
2096 if (downstream->destroyed) {
|
|
|
2097 return;
|
|
|
2098 }
|
|
|
2099
|
|
76
|
2100 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2101 return;
|
|
|
2102 }
|
|
|
2103
|
|
|
2104 } else {
|
|
|
2105 p->downstream_error = 1;
|
|
126
|
2106 c->timedout = 1;
|
|
160
|
2107 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
2108 }
|
|
28
|
2109
|
|
|
2110 } else {
|
|
126
|
2111 p->upstream_error = 1;
|
|
160
|
2112 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
2113 }
|
|
|
2114
|
|
|
2115 } else {
|
|
76
|
2116 if (ev->write && ev->delayed) {
|
|
|
2117 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2118 "http downstream delayed");
|
|
|
2119
|
|
426
|
2120 if (ngx_handle_write_event(ev, p->send_lowat) != NGX_OK) {
|
|
|
2121 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2122 return;
|
|
|
2123 }
|
|
|
2124
|
|
|
2125 return;
|
|
|
2126 }
|
|
|
2127
|
|
28
|
2128 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2129
|
|
|
2130 if (downstream->destroyed) {
|
|
|
2131 return;
|
|
|
2132 }
|
|
|
2133
|
|
28
|
2134 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2135 return;
|
|
|
2136 }
|
|
|
2137 }
|
|
126
|
2138
|
|
28
|
2139 if (u->peer.connection) {
|
|
|
2140
|
|
318
|
2141 if (u->store) {
|
|
|
2142
|
|
364
|
2143 tf = u->pipe->temp_file;
|
|
|
2144
|
|
|
2145 if (p->upstream_eof
|
|
|
2146 && u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2147 && (u->headers_in.content_length_n == -1
|
|
|
2148 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2149 {
|
|
318
|
2150 ngx_http_upstream_store(r, u);
|
|
|
2151
|
|
|
2152 } else if ((p->upstream_error
|
|
|
2153 || (p->upstream_eof
|
|
|
2154 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
364
|
2155 && tf->file.fd != NGX_INVALID_FILE)
|
|
318
|
2156 {
|
|
364
|
2157 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2158
|
|
318
|
2159 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2160 ngx_delete_file_n " \"%s\" failed",
|
|
|
2161 u->pipe->temp_file->file.name.data);
|
|
|
2162 }
|
|
|
2163 }
|
|
|
2164 }
|
|
|
2165
|
|
28
|
2166 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2167
|
|
340
|
2168 if (p->upstream_done && u->cacheable) {
|
|
28
|
2169 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2170 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2171 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2172 return;
|
|
|
2173 }
|
|
|
2174
|
|
340
|
2175 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2176
|
|
|
2177 /* TODO: check length & update cache */
|
|
|
2178
|
|
|
2179 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2180 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2181 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2182 return;
|
|
|
2183 }
|
|
|
2184 }
|
|
|
2185
|
|
|
2186 #endif
|
|
|
2187
|
|
|
2188 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
2189 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2190 "http upstream exit: %p", p->out);
|
|
28
|
2191 #if 0
|
|
|
2192 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2193 #endif
|
|
|
2194 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2195 return;
|
|
|
2196 }
|
|
|
2197 }
|
|
|
2198
|
|
|
2199 if (p->downstream_error) {
|
|
32
|
2200 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2201 "http upstream downstream error");
|
|
28
|
2202
|
|
340
|
2203 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2204 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2205 }
|
|
|
2206 }
|
|
|
2207 }
|
|
|
2208
|
|
|
2209
|
|
36
|
2210 static void
|
|
318
|
2211 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2212 {
|
|
370
|
2213 size_t root;
|
|
|
2214 time_t lm;
|
|
|
2215 ngx_str_t path;
|
|
|
2216 ngx_temp_file_t *tf;
|
|
|
2217 ngx_ext_rename_file_t ext;
|
|
318
|
2218
|
|
358
|
2219 tf = u->pipe->temp_file;
|
|
|
2220
|
|
|
2221 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2222
|
|
|
2223 /* create file for empty 200 response */
|
|
|
2224
|
|
|
2225 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2226 if (tf == NULL) {
|
|
|
2227 return;
|
|
|
2228 }
|
|
|
2229
|
|
|
2230 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2231 tf->file.log = r->connection->log;
|
|
|
2232 tf->path = u->conf->temp_path;
|
|
|
2233 tf->pool = r->pool;
|
|
|
2234 tf->persistent = 1;
|
|
|
2235
|
|
|
2236 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2237 tf->persistent, tf->clean, tf->access)
|
|
|
2238 != NGX_OK)
|
|
|
2239 {
|
|
|
2240 return;
|
|
|
2241 }
|
|
|
2242
|
|
|
2243 u->pipe->temp_file = tf;
|
|
|
2244 }
|
|
|
2245
|
|
370
|
2246 ext.access = u->conf->store_access;
|
|
|
2247 ext.time = -1;
|
|
|
2248 ext.create_path = 1;
|
|
|
2249 ext.delete_file = 1;
|
|
|
2250 ext.log = r->connection->log;
|
|
318
|
2251
|
|
356
|
2252 if (u->headers_in.last_modified) {
|
|
|
2253
|
|
370
|
2254 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2255 u->headers_in.last_modified->value.len);
|
|
318
|
2256
|
|
|
2257 if (lm != NGX_ERROR) {
|
|
370
|
2258 ext.time = lm;
|
|
|
2259 ext.fd = tf->file.fd;
|
|
318
|
2260 }
|
|
|
2261 }
|
|
|
2262
|
|
320
|
2263 if (u->conf->store_lengths == NULL) {
|
|
|
2264
|
|
|
2265 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2266
|
|
|
2267 } else {
|
|
|
2268 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2269 u->conf->store_values->elts)
|
|
|
2270 == NULL)
|
|
|
2271 {
|
|
|
2272 return;
|
|
|
2273 }
|
|
|
2274 }
|
|
318
|
2275
|
|
|
2276 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2277 "upstream stores \"%s\" to \"%s\"",
|
|
|
2278 tf->file.name.data, path.data);
|
|
|
2279
|
|
|
2280 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2281 }
|
|
|
2282
|
|
|
2283
|
|
|
2284 static void
|
|
36
|
2285 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2286 {
|
|
|
2287 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2288 "http upstream dummy handler");
|
|
|
2289 }
|
|
|
2290
|
|
|
2291
|
|
36
|
2292 static void
|
|
|
2293 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2294 ngx_uint_t ft_type)
|
|
28
|
2295 {
|
|
260
|
2296 ngx_uint_t status, state;
|
|
28
|
2297
|
|
|
2298 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2299 "http next upstream, %xi", ft_type);
|
|
28
|
2300
|
|
|
2301 #if 0
|
|
|
2302 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2303 #endif
|
|
|
2304
|
|
74
|
2305 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2306 state = NGX_PEER_NEXT;
|
|
74
|
2307 } else {
|
|
260
|
2308 state = NGX_PEER_FAILED;
|
|
28
|
2309 }
|
|
74
|
2310
|
|
326
|
2311 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2312 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2313 }
|
|
74
|
2314
|
|
28
|
2315 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2316 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2317 "upstream timed out");
|
|
|
2318 }
|
|
126
|
2319
|
|
28
|
2320 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2321 status = 0;
|
|
|
2322
|
|
|
2323 } else {
|
|
|
2324 switch(ft_type) {
|
|
|
2325
|
|
|
2326 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2327 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2328 break;
|
|
|
2329
|
|
|
2330 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2331 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2332 break;
|
|
|
2333
|
|
|
2334 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2335 status = NGX_HTTP_NOT_FOUND;
|
|
|
2336 break;
|
|
|
2337
|
|
|
2338 /*
|
|
|
2339 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2340 * never reach here
|
|
|
2341 */
|
|
|
2342
|
|
|
2343 default:
|
|
|
2344 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2345 }
|
|
|
2346 }
|
|
|
2347
|
|
132
|
2348 if (r->connection->error) {
|
|
28
|
2349 ngx_http_upstream_finalize_request(r, u,
|
|
|
2350 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2351 return;
|
|
|
2352 }
|
|
|
2353
|
|
|
2354 if (status) {
|
|
|
2355 u->state->status = status;
|
|
|
2356
|
|
74
|
2357 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2358
|
|
|
2359 #if (NGX_HTTP_CACHE)
|
|
|
2360
|
|
|
2361 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2362 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2363 ngx_http_send_cached_response(r));
|
|
28
|
2364 return;
|
|
|
2365 }
|
|
|
2366
|
|
|
2367 #endif
|
|
|
2368
|
|
|
2369 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2370 return;
|
|
|
2371 }
|
|
|
2372 }
|
|
|
2373
|
|
|
2374 if (u->peer.connection) {
|
|
|
2375 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2376 "close http upstream connection: %d",
|
|
|
2377 u->peer.connection->fd);
|
|
126
|
2378 #if (NGX_HTTP_SSL)
|
|
260
|
2379
|
|
126
|
2380 if (u->peer.connection->ssl) {
|
|
260
|
2381 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2382 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2383
|
|
|
2384 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2385 }
|
|
|
2386 #endif
|
|
260
|
2387
|
|
28
|
2388 ngx_close_connection(u->peer.connection);
|
|
|
2389 }
|
|
|
2390
|
|
|
2391 #if 0
|
|
|
2392 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2393 ngx_http_upstream_busy_lock(p);
|
|
|
2394 return;
|
|
|
2395 }
|
|
|
2396 #endif
|
|
|
2397
|
|
|
2398 ngx_http_upstream_connect(r, u);
|
|
|
2399 }
|
|
|
2400
|
|
|
2401
|
|
36
|
2402 static void
|
|
118
|
2403 ngx_http_upstream_cleanup(void *data)
|
|
|
2404 {
|
|
|
2405 ngx_http_request_t *r = data;
|
|
|
2406
|
|
356
|
2407 ngx_http_upstream_t *u;
|
|
|
2408
|
|
118
|
2409 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2410 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2411
|
|
356
|
2412 u = r->upstream;
|
|
|
2413
|
|
|
2414 if (u->resolved && u->resolved->ctx) {
|
|
|
2415 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2416 }
|
|
|
2417
|
|
356
|
2418 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2419 }
|
|
|
2420
|
|
|
2421
|
|
|
2422 static void
|
|
36
|
2423 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2424 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2425 {
|
|
262
|
2426 ngx_time_t *tp;
|
|
112
|
2427
|
|
32
|
2428 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2429 "finalize http upstream request: %i", rc);
|
|
28
|
2430
|
|
118
|
2431 *u->cleanup = NULL;
|
|
|
2432
|
|
348
|
2433 if (u->state && u->state->response_sec) {
|
|
112
|
2434 tp = ngx_timeofday();
|
|
262
|
2435 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2436 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2437 }
|
|
|
2438
|
|
28
|
2439 u->finalize_request(r, rc);
|
|
|
2440
|
|
348
|
2441 if (u->peer.free) {
|
|
|
2442 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2443 }
|
|
260
|
2444
|
|
28
|
2445 if (u->peer.connection) {
|
|
260
|
2446
|
|
126
|
2447 #if (NGX_HTTP_SSL)
|
|
|
2448
|
|
|
2449 /* TODO: do not shutdown persistent connection */
|
|
|
2450
|
|
|
2451 if (u->peer.connection->ssl) {
|
|
260
|
2452
|
|
|
2453 /*
|
|
|
2454 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2455 * and do not wait its "close notify" shutdown alert.
|
|
|
2456 * It is acceptable according to the TLS standard.
|
|
|
2457 */
|
|
|
2458
|
|
|
2459 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2460
|
|
|
2461 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2462 }
|
|
|
2463 #endif
|
|
260
|
2464
|
|
|
2465 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2466 "close http upstream connection: %d",
|
|
|
2467 u->peer.connection->fd);
|
|
|
2468
|
|
28
|
2469 ngx_close_connection(u->peer.connection);
|
|
|
2470 }
|
|
|
2471
|
|
32
|
2472 u->peer.connection = NULL;
|
|
|
2473
|
|
112
|
2474 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2475 {
|
|
|
2476 rc = 0;
|
|
|
2477 }
|
|
|
2478
|
|
130
|
2479 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2480 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2481 "http upstream temp fd: %d",
|
|
130
|
2482 u->pipe->temp_file->file.fd);
|
|
28
|
2483 }
|
|
|
2484
|
|
|
2485 #if 0
|
|
|
2486 if (u->cache) {
|
|
|
2487 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2488 "http upstream cache fd: %d",
|
|
28
|
2489 u->cache->ctx.file.fd);
|
|
|
2490 }
|
|
|
2491 #endif
|
|
|
2492
|
|
64
|
2493 if (rc == NGX_DECLINED) {
|
|
|
2494 return;
|
|
|
2495 }
|
|
|
2496
|
|
32
|
2497 r->connection->log->action = "sending to client";
|
|
|
2498
|
|
426
|
2499 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2500 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2501 }
|
|
|
2502
|
|
|
2503 ngx_http_finalize_request(r, rc);
|
|
|
2504 }
|
|
|
2505
|
|
|
2506
|
|
58
|
2507 static ngx_int_t
|
|
|
2508 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2509 ngx_uint_t offset)
|
|
126
|
2510 {
|
|
58
|
2511 ngx_table_elt_t **ph;
|
|
126
|
2512
|
|
58
|
2513 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2514
|
|
|
2515 if (*ph == NULL) {
|
|
|
2516 *ph = h;
|
|
|
2517 }
|
|
|
2518
|
|
|
2519 return NGX_OK;
|
|
|
2520 }
|
|
|
2521
|
|
|
2522
|
|
|
2523 static ngx_int_t
|
|
|
2524 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2525 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2526 {
|
|
|
2527 ngx_array_t *pa;
|
|
|
2528 ngx_table_elt_t **ph;
|
|
|
2529
|
|
|
2530 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2531
|
|
|
2532 if (pa->elts == NULL) {
|
|
|
2533 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2534 {
|
|
|
2535 return NGX_ERROR;
|
|
|
2536 }
|
|
|
2537 }
|
|
|
2538
|
|
|
2539 ph = ngx_array_push(pa);
|
|
|
2540 if (ph == NULL) {
|
|
|
2541 return NGX_ERROR;
|
|
|
2542 }
|
|
|
2543
|
|
|
2544 *ph = h;
|
|
|
2545
|
|
|
2546 return NGX_OK;
|
|
|
2547 }
|
|
|
2548
|
|
|
2549
|
|
|
2550 static ngx_int_t
|
|
|
2551 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2552 ngx_uint_t offset)
|
|
|
2553 {
|
|
|
2554 return NGX_OK;
|
|
|
2555 }
|
|
|
2556
|
|
|
2557
|
|
|
2558 static ngx_int_t
|
|
76
|
2559 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2560 ngx_uint_t offset)
|
|
126
|
2561 {
|
|
76
|
2562 ngx_int_t n;
|
|
|
2563
|
|
|
2564 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2565
|
|
|
2566 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2567
|
|
|
2568 if (n != NGX_ERROR) {
|
|
|
2569 r->limit_rate = (size_t) n;
|
|
|
2570 }
|
|
|
2571
|
|
|
2572 return NGX_OK;
|
|
|
2573 }
|
|
|
2574
|
|
|
2575
|
|
|
2576 static ngx_int_t
|
|
198
|
2577 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2578 ngx_uint_t offset)
|
|
|
2579 {
|
|
|
2580 u_char c0, c1, c2;
|
|
|
2581
|
|
|
2582 if (r->upstream->conf->change_buffering) {
|
|
|
2583
|
|
|
2584 if (h->value.len == 2) {
|
|
|
2585 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2586 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2587
|
|
|
2588 if (c0 == 'n' && c1 == 'o') {
|
|
|
2589 r->upstream->buffering = 0;
|
|
|
2590 }
|
|
|
2591
|
|
|
2592 } else if (h->value.len == 3) {
|
|
|
2593 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2594 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2595 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2596
|
|
|
2597 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2598 r->upstream->buffering = 1;
|
|
|
2599 }
|
|
|
2600 }
|
|
|
2601 }
|
|
|
2602
|
|
|
2603 return NGX_OK;
|
|
|
2604 }
|
|
|
2605
|
|
|
2606
|
|
|
2607 static ngx_int_t
|
|
206
|
2608 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2609 ngx_uint_t offset)
|
|
|
2610 {
|
|
|
2611 r->headers_out.override_charset = &h->value;
|
|
|
2612
|
|
|
2613 return NGX_OK;
|
|
|
2614 }
|
|
|
2615
|
|
|
2616
|
|
|
2617 static ngx_int_t
|
|
58
|
2618 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2619 ngx_uint_t offset)
|
|
|
2620 {
|
|
122
|
2621 ngx_table_elt_t *ho, **ph;
|
|
58
|
2622
|
|
|
2623 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2624 if (ho == NULL) {
|
|
|
2625 return NGX_ERROR;
|
|
|
2626 }
|
|
|
2627
|
|
|
2628 *ho = *h;
|
|
|
2629
|
|
122
|
2630 if (offset) {
|
|
|
2631 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2632 *ph = ho;
|
|
|
2633 }
|
|
|
2634
|
|
58
|
2635 return NGX_OK;
|
|
|
2636 }
|
|
|
2637
|
|
|
2638
|
|
|
2639 static ngx_int_t
|
|
|
2640 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2641 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2642 {
|
|
|
2643 ngx_array_t *pa;
|
|
|
2644 ngx_table_elt_t *ho, **ph;
|
|
|
2645
|
|
|
2646 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2647
|
|
|
2648 if (pa->elts == NULL) {
|
|
|
2649 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2650 {
|
|
|
2651 return NGX_ERROR;
|
|
|
2652 }
|
|
|
2653 }
|
|
|
2654
|
|
|
2655 ph = ngx_array_push(pa);
|
|
|
2656 if (ph == NULL) {
|
|
|
2657 return NGX_ERROR;
|
|
|
2658 }
|
|
|
2659
|
|
|
2660 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2661 if (ho == NULL) {
|
|
|
2662 return NGX_ERROR;
|
|
|
2663 }
|
|
|
2664
|
|
|
2665 *ho = *h;
|
|
|
2666 *ph = ho;
|
|
|
2667
|
|
|
2668 return NGX_OK;
|
|
|
2669 }
|
|
|
2670
|
|
|
2671
|
|
|
2672 static ngx_int_t
|
|
|
2673 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2674 ngx_uint_t offset)
|
|
|
2675 {
|
|
206
|
2676 u_char *p, *last;
|
|
|
2677
|
|
|
2678 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2679 r->headers_out.content_type = h->value;
|
|
|
2680
|
|
206
|
2681 for (p = h->value.data; *p; p++) {
|
|
|
2682
|
|
|
2683 if (*p != ';') {
|
|
|
2684 continue;
|
|
|
2685 }
|
|
|
2686
|
|
|
2687 last = p;
|
|
|
2688
|
|
|
2689 while (*++p == ' ') { /* void */ }
|
|
|
2690
|
|
372
|
2691 if (*p == '\0') {
|
|
|
2692 return NGX_OK;
|
|
|
2693 }
|
|
|
2694
|
|
286
|
2695 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2696 continue;
|
|
|
2697 }
|
|
|
2698
|
|
|
2699 p += 8;
|
|
|
2700
|
|
|
2701 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2702
|
|
410
|
2703 if (*p == '"') {
|
|
|
2704 p++;
|
|
|
2705 }
|
|
|
2706
|
|
|
2707 last = h->value.data + h->value.len;
|
|
|
2708
|
|
|
2709 if (*(last - 1) == '"') {
|
|
|
2710 last--;
|
|
|
2711 }
|
|
|
2712
|
|
|
2713 r->headers_out.charset.len = last - p;
|
|
206
|
2714 r->headers_out.charset.data = p;
|
|
292
|
2715
|
|
|
2716 return NGX_OK;
|
|
206
|
2717 }
|
|
|
2718
|
|
58
|
2719 return NGX_OK;
|
|
|
2720 }
|
|
|
2721
|
|
|
2722
|
|
|
2723 static ngx_int_t
|
|
|
2724 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2725 ngx_uint_t offset)
|
|
|
2726 {
|
|
|
2727 ngx_table_elt_t *ho;
|
|
|
2728
|
|
|
2729 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2730 if (ho == NULL) {
|
|
|
2731 return NGX_ERROR;
|
|
|
2732 }
|
|
|
2733
|
|
|
2734 *ho = *h;
|
|
|
2735
|
|
|
2736 r->headers_out.content_length = ho;
|
|
|
2737 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2738
|
|
|
2739 return NGX_OK;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742
|
|
|
2743 static ngx_int_t
|
|
|
2744 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2745 ngx_uint_t offset)
|
|
|
2746 {
|
|
|
2747 ngx_int_t rc;
|
|
|
2748 ngx_table_elt_t *ho;
|
|
|
2749
|
|
|
2750 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2751 if (ho == NULL) {
|
|
|
2752 return NGX_ERROR;
|
|
|
2753 }
|
|
|
2754
|
|
|
2755 *ho = *h;
|
|
|
2756
|
|
|
2757 if (r->upstream->rewrite_redirect) {
|
|
|
2758 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2759
|
|
78
|
2760 if (rc == NGX_DECLINED) {
|
|
|
2761 return NGX_OK;
|
|
|
2762 }
|
|
|
2763
|
|
58
|
2764 if (rc == NGX_OK) {
|
|
|
2765 r->headers_out.location = ho;
|
|
|
2766
|
|
|
2767 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2768 "rewritten location: \"%V\"", &ho->value);
|
|
|
2769 }
|
|
|
2770
|
|
|
2771 return rc;
|
|
|
2772 }
|
|
|
2773
|
|
348
|
2774 if (ho->value.data[0] != '/') {
|
|
|
2775 r->headers_out.location = ho;
|
|
|
2776 }
|
|
|
2777
|
|
58
|
2778 /*
|
|
|
2779 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2780 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2781 */
|
|
|
2782
|
|
|
2783 return NGX_OK;
|
|
|
2784 }
|
|
|
2785
|
|
|
2786
|
|
|
2787 static ngx_int_t
|
|
|
2788 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2789 ngx_uint_t offset)
|
|
|
2790 {
|
|
|
2791 u_char *p;
|
|
|
2792 ngx_int_t rc;
|
|
|
2793 ngx_table_elt_t *ho;
|
|
|
2794
|
|
|
2795 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2796 if (ho == NULL) {
|
|
|
2797 return NGX_ERROR;
|
|
|
2798 }
|
|
|
2799
|
|
|
2800 *ho = *h;
|
|
|
2801
|
|
|
2802 if (r->upstream->rewrite_redirect) {
|
|
|
2803
|
|
340
|
2804 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2805
|
|
|
2806 if (p) {
|
|
|
2807 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2808
|
|
|
2809 } else {
|
|
|
2810 return NGX_OK;
|
|
|
2811 }
|
|
|
2812
|
|
78
|
2813 if (rc == NGX_DECLINED) {
|
|
|
2814 return NGX_OK;
|
|
|
2815 }
|
|
|
2816
|
|
58
|
2817 if (rc == NGX_OK) {
|
|
348
|
2818 r->headers_out.refresh = ho;
|
|
|
2819
|
|
58
|
2820 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2821 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2822 }
|
|
|
2823
|
|
|
2824 return rc;
|
|
|
2825 }
|
|
|
2826
|
|
348
|
2827 r->headers_out.refresh = ho;
|
|
|
2828
|
|
58
|
2829 return NGX_OK;
|
|
|
2830 }
|
|
|
2831
|
|
|
2832
|
|
|
2833 #if (NGX_HTTP_GZIP)
|
|
|
2834
|
|
|
2835 static ngx_int_t
|
|
|
2836 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2837 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2838 {
|
|
|
2839 ngx_table_elt_t *ho;
|
|
|
2840
|
|
|
2841 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2842 if (ho == NULL) {
|
|
|
2843 return NGX_ERROR;
|
|
|
2844 }
|
|
|
2845
|
|
|
2846 *ho = *h;
|
|
|
2847
|
|
|
2848 r->headers_out.content_encoding = ho;
|
|
|
2849
|
|
|
2850 return NGX_OK;
|
|
|
2851 }
|
|
|
2852
|
|
|
2853 #endif
|
|
|
2854
|
|
|
2855
|
|
36
|
2856 static ngx_int_t
|
|
122
|
2857 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2858 {
|
|
260
|
2859 ngx_http_variable_t *var, *v;
|
|
28
|
2860
|
|
122
|
2861 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2862 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2863 if (var == NULL) {
|
|
|
2864 return NGX_ERROR;
|
|
|
2865 }
|
|
|
2866
|
|
186
|
2867 var->get_handler = v->get_handler;
|
|
122
|
2868 var->data = v->data;
|
|
|
2869 }
|
|
|
2870
|
|
28
|
2871 return NGX_OK;
|
|
|
2872 }
|
|
58
|
2873
|
|
|
2874
|
|
122
|
2875 static ngx_int_t
|
|
298
|
2876 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2877 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2878 {
|
|
|
2879 u_char *p;
|
|
|
2880 size_t len;
|
|
|
2881 ngx_uint_t i;
|
|
|
2882 ngx_http_upstream_state_t *state;
|
|
|
2883
|
|
|
2884 v->valid = 1;
|
|
340
|
2885 v->no_cacheable = 0;
|
|
298
|
2886 v->not_found = 0;
|
|
|
2887
|
|
|
2888 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2889 v->not_found = 1;
|
|
|
2890 return NGX_OK;
|
|
|
2891 }
|
|
|
2892
|
|
|
2893 len = 0;
|
|
|
2894 state = r->upstream_states->elts;
|
|
|
2895
|
|
|
2896 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2897 if (state[i].peer) {
|
|
|
2898 len += state[i].peer->len + 2;
|
|
|
2899
|
|
|
2900 } else {
|
|
|
2901 len += 3;
|
|
|
2902 }
|
|
|
2903 }
|
|
|
2904
|
|
382
|
2905 p = ngx_pnalloc(r->pool, len);
|
|
298
|
2906 if (p == NULL) {
|
|
|
2907 return NGX_ERROR;
|
|
|
2908 }
|
|
|
2909
|
|
|
2910 v->data = p;
|
|
|
2911
|
|
|
2912 i = 0;
|
|
|
2913
|
|
|
2914 for ( ;; ) {
|
|
|
2915 if (state[i].peer) {
|
|
|
2916 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2917 }
|
|
|
2918
|
|
|
2919 if (++i == r->upstream_states->nelts) {
|
|
|
2920 break;
|
|
|
2921 }
|
|
|
2922
|
|
|
2923 if (state[i].peer) {
|
|
|
2924 *p++ = ',';
|
|
|
2925 *p++ = ' ';
|
|
|
2926
|
|
|
2927 } else {
|
|
|
2928 *p++ = ' ';
|
|
|
2929 *p++ = ':';
|
|
|
2930 *p++ = ' ';
|
|
|
2931
|
|
|
2932 if (++i == r->upstream_states->nelts) {
|
|
|
2933 break;
|
|
|
2934 }
|
|
|
2935
|
|
|
2936 continue;
|
|
|
2937 }
|
|
|
2938 }
|
|
|
2939
|
|
|
2940 v->len = p - v->data;
|
|
|
2941
|
|
|
2942 return NGX_OK;
|
|
|
2943 }
|
|
|
2944
|
|
|
2945
|
|
|
2946 static ngx_int_t
|
|
122
|
2947 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2948 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2949 {
|
|
|
2950 u_char *p;
|
|
|
2951 size_t len;
|
|
|
2952 ngx_uint_t i;
|
|
|
2953 ngx_http_upstream_state_t *state;
|
|
|
2954
|
|
|
2955 v->valid = 1;
|
|
340
|
2956 v->no_cacheable = 0;
|
|
122
|
2957 v->not_found = 0;
|
|
|
2958
|
|
296
|
2959 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2960 v->not_found = 1;
|
|
|
2961 return NGX_OK;
|
|
|
2962 }
|
|
|
2963
|
|
296
|
2964 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2965
|
|
382
|
2966 p = ngx_pnalloc(r->pool, len);
|
|
122
|
2967 if (p == NULL) {
|
|
|
2968 return NGX_ERROR;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 v->data = p;
|
|
|
2972
|
|
|
2973 i = 0;
|
|
296
|
2974 state = r->upstream_states->elts;
|
|
122
|
2975
|
|
|
2976 for ( ;; ) {
|
|
296
|
2977 if (state[i].status) {
|
|
|
2978 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2979
|
|
|
2980 } else {
|
|
296
|
2981 *p++ = '-';
|
|
122
|
2982 }
|
|
|
2983
|
|
296
|
2984 if (++i == r->upstream_states->nelts) {
|
|
122
|
2985 break;
|
|
|
2986 }
|
|
|
2987
|
|
296
|
2988 if (state[i].peer) {
|
|
|
2989 *p++ = ',';
|
|
|
2990 *p++ = ' ';
|
|
|
2991
|
|
|
2992 } else {
|
|
|
2993 *p++ = ' ';
|
|
|
2994 *p++ = ':';
|
|
|
2995 *p++ = ' ';
|
|
|
2996
|
|
|
2997 if (++i == r->upstream_states->nelts) {
|
|
|
2998 break;
|
|
|
2999 }
|
|
|
3000
|
|
|
3001 continue;
|
|
|
3002 }
|
|
122
|
3003 }
|
|
|
3004
|
|
|
3005 v->len = p - v->data;
|
|
|
3006
|
|
|
3007 return NGX_OK;
|
|
|
3008 }
|
|
|
3009
|
|
|
3010
|
|
|
3011 static ngx_int_t
|
|
|
3012 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3013 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3014 {
|
|
|
3015 u_char *p;
|
|
|
3016 size_t len;
|
|
|
3017 ngx_uint_t i;
|
|
262
|
3018 ngx_msec_int_t ms;
|
|
122
|
3019 ngx_http_upstream_state_t *state;
|
|
|
3020
|
|
|
3021 v->valid = 1;
|
|
340
|
3022 v->no_cacheable = 0;
|
|
122
|
3023 v->not_found = 0;
|
|
|
3024
|
|
296
|
3025 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3026 v->not_found = 1;
|
|
|
3027 return NGX_OK;
|
|
|
3028 }
|
|
|
3029
|
|
296
|
3030 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3031
|
|
382
|
3032 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3033 if (p == NULL) {
|
|
|
3034 return NGX_ERROR;
|
|
|
3035 }
|
|
|
3036
|
|
|
3037 v->data = p;
|
|
|
3038
|
|
|
3039 i = 0;
|
|
296
|
3040 state = r->upstream_states->elts;
|
|
122
|
3041
|
|
|
3042 for ( ;; ) {
|
|
296
|
3043 if (state[i].status) {
|
|
346
|
3044 ms = (ngx_msec_int_t)
|
|
|
3045 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3046 ms = (ms >= 0) ? ms : 0;
|
|
|
3047 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3048
|
|
|
3049 } else {
|
|
|
3050 *p++ = '-';
|
|
122
|
3051 }
|
|
|
3052
|
|
296
|
3053 if (++i == r->upstream_states->nelts) {
|
|
122
|
3054 break;
|
|
|
3055 }
|
|
|
3056
|
|
296
|
3057 if (state[i].peer) {
|
|
|
3058 *p++ = ',';
|
|
|
3059 *p++ = ' ';
|
|
|
3060
|
|
|
3061 } else {
|
|
|
3062 *p++ = ' ';
|
|
|
3063 *p++ = ':';
|
|
|
3064 *p++ = ' ';
|
|
|
3065
|
|
|
3066 if (++i == r->upstream_states->nelts) {
|
|
|
3067 break;
|
|
|
3068 }
|
|
|
3069
|
|
|
3070 continue;
|
|
|
3071 }
|
|
122
|
3072 }
|
|
|
3073
|
|
|
3074 v->len = p - v->data;
|
|
|
3075
|
|
|
3076 return NGX_OK;
|
|
|
3077 }
|
|
|
3078
|
|
|
3079
|
|
296
|
3080 ngx_int_t
|
|
|
3081 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3082 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3083 {
|
|
|
3084 if (r->upstream == NULL) {
|
|
|
3085 v->not_found = 1;
|
|
|
3086 return NGX_OK;
|
|
|
3087 }
|
|
|
3088
|
|
|
3089 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3090 &r->upstream->headers_in.headers.part,
|
|
|
3091 sizeof("upstream_http_") - 1);
|
|
|
3092 }
|
|
|
3093
|
|
|
3094
|
|
200
|
3095 static char *
|
|
|
3096 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3097 {
|
|
260
|
3098 char *rv;
|
|
|
3099 void *mconf;
|
|
|
3100 ngx_str_t *value;
|
|
|
3101 ngx_url_t u;
|
|
|
3102 ngx_uint_t m;
|
|
|
3103 ngx_conf_t pcf;
|
|
|
3104 ngx_http_module_t *module;
|
|
|
3105 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3106 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3107
|
|
|
3108 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3109
|
|
|
3110 value = cf->args->elts;
|
|
|
3111 u.host = value[1];
|
|
|
3112 u.no_resolve = 1;
|
|
|
3113
|
|
|
3114 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3115 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3116 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3117 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3118 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3119 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3120 if (uscf == NULL) {
|
|
|
3121 return NGX_CONF_ERROR;
|
|
|
3122 }
|
|
|
3123
|
|
200
|
3124
|
|
|
3125 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3126 if (ctx == NULL) {
|
|
|
3127 return NGX_CONF_ERROR;
|
|
|
3128 }
|
|
|
3129
|
|
260
|
3130 http_ctx = cf->ctx;
|
|
|
3131 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3132
|
|
|
3133 /* the upstream{}'s srv_conf */
|
|
|
3134
|
|
|
3135 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3136 if (ctx->srv_conf == NULL) {
|
|
|
3137 return NGX_CONF_ERROR;
|
|
|
3138 }
|
|
|
3139
|
|
|
3140 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3141
|
|
260
|
3142 uscf->srv_conf = ctx->srv_conf;
|
|
|
3143
|
|
200
|
3144
|
|
|
3145 /* the upstream{}'s loc_conf */
|
|
|
3146
|
|
|
3147 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3148 if (ctx->loc_conf == NULL) {
|
|
|
3149 return NGX_CONF_ERROR;
|
|
|
3150 }
|
|
|
3151
|
|
|
3152 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3153 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3154 continue;
|
|
|
3155 }
|
|
|
3156
|
|
|
3157 module = ngx_modules[m]->ctx;
|
|
|
3158
|
|
260
|
3159 if (module->create_srv_conf) {
|
|
|
3160 mconf = module->create_srv_conf(cf);
|
|
|
3161 if (mconf == NULL) {
|
|
|
3162 return NGX_CONF_ERROR;
|
|
|
3163 }
|
|
|
3164
|
|
|
3165 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3166 }
|
|
|
3167
|
|
200
|
3168 if (module->create_loc_conf) {
|
|
|
3169 mconf = module->create_loc_conf(cf);
|
|
|
3170 if (mconf == NULL) {
|
|
|
3171 return NGX_CONF_ERROR;
|
|
|
3172 }
|
|
|
3173
|
|
|
3174 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3175 }
|
|
|
3176 }
|
|
|
3177
|
|
|
3178
|
|
|
3179 /* parse inside upstream{} */
|
|
|
3180
|
|
|
3181 pcf = *cf;
|
|
|
3182 cf->ctx = ctx;
|
|
|
3183 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3184
|
|
|
3185 rv = ngx_conf_parse(cf, NULL);
|
|
|
3186
|
|
|
3187 *cf = pcf;
|
|
|
3188
|
|
|
3189 if (rv != NGX_CONF_OK) {
|
|
|
3190 return rv;
|
|
|
3191 }
|
|
|
3192
|
|
|
3193 if (uscf->servers == NULL) {
|
|
|
3194 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3195 "no servers are inside upstream");
|
|
|
3196 return NGX_CONF_ERROR;
|
|
|
3197 }
|
|
|
3198
|
|
|
3199 return rv;
|
|
|
3200 }
|
|
|
3201
|
|
|
3202
|
|
|
3203 static char *
|
|
|
3204 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3205 {
|
|
|
3206 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3207
|
|
260
|
3208 time_t fail_timeout;
|
|
|
3209 ngx_str_t *value, s;
|
|
|
3210 ngx_url_t u;
|
|
|
3211 ngx_int_t weight, max_fails;
|
|
|
3212 ngx_uint_t i;
|
|
|
3213 ngx_http_upstream_server_t *us;
|
|
200
|
3214
|
|
|
3215 if (uscf->servers == NULL) {
|
|
260
|
3216 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3217 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3218 if (uscf->servers == NULL) {
|
|
|
3219 return NGX_CONF_ERROR;
|
|
|
3220 }
|
|
|
3221 }
|
|
|
3222
|
|
260
|
3223 us = ngx_array_push(uscf->servers);
|
|
|
3224 if (us == NULL) {
|
|
200
|
3225 return NGX_CONF_ERROR;
|
|
|
3226 }
|
|
|
3227
|
|
260
|
3228 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3229
|
|
200
|
3230 value = cf->args->elts;
|
|
|
3231
|
|
|
3232 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3233
|
|
|
3234 u.url = value[1];
|
|
266
|
3235 u.default_port = 80;
|
|
200
|
3236
|
|
340
|
3237 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3238 if (u.err) {
|
|
|
3239 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3240 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3241 }
|
|
|
3242
|
|
|
3243 return NGX_CONF_ERROR;
|
|
|
3244 }
|
|
|
3245
|
|
212
|
3246 weight = 1;
|
|
260
|
3247 max_fails = 1;
|
|
|
3248 fail_timeout = 10;
|
|
|
3249
|
|
|
3250 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3251
|
|
|
3252 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3253
|
|
|
3254 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3255 goto invalid;
|
|
|
3256 }
|
|
|
3257
|
|
|
3258 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3259
|
|
|
3260 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3261 goto invalid;
|
|
|
3262 }
|
|
|
3263
|
|
260
|
3264 continue;
|
|
|
3265 }
|
|
|
3266
|
|
|
3267 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3268
|
|
|
3269 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3270 goto invalid;
|
|
|
3271 }
|
|
|
3272
|
|
|
3273 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3274
|
|
|
3275 if (max_fails == NGX_ERROR) {
|
|
|
3276 goto invalid;
|
|
|
3277 }
|
|
|
3278
|
|
|
3279 continue;
|
|
212
|
3280 }
|
|
260
|
3281
|
|
|
3282 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3283
|
|
|
3284 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3285 goto invalid;
|
|
|
3286 }
|
|
|
3287
|
|
|
3288 s.len = value[i].len - 13;
|
|
|
3289 s.data = &value[i].data[13];
|
|
|
3290
|
|
|
3291 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3292
|
|
372
|
3293 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3294 goto invalid;
|
|
|
3295 }
|
|
|
3296
|
|
|
3297 continue;
|
|
|
3298 }
|
|
|
3299
|
|
326
|
3300 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3301
|
|
|
3302 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3303 goto invalid;
|
|
|
3304 }
|
|
|
3305
|
|
|
3306 us->backup = 1;
|
|
|
3307
|
|
|
3308 continue;
|
|
|
3309 }
|
|
|
3310
|
|
260
|
3311 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3312
|
|
|
3313 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3314 goto invalid;
|
|
|
3315 }
|
|
|
3316
|
|
|
3317 us->down = 1;
|
|
|
3318
|
|
|
3319 continue;
|
|
|
3320 }
|
|
|
3321
|
|
|
3322 goto invalid;
|
|
212
|
3323 }
|
|
|
3324
|
|
260
|
3325 us->addrs = u.addrs;
|
|
|
3326 us->naddrs = u.naddrs;
|
|
|
3327 us->weight = weight;
|
|
|
3328 us->max_fails = max_fails;
|
|
|
3329 us->fail_timeout = fail_timeout;
|
|
200
|
3330
|
|
|
3331 return NGX_CONF_OK;
|
|
212
|
3332
|
|
|
3333 invalid:
|
|
|
3334
|
|
260
|
3335 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3336 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3337
|
|
|
3338 return NGX_CONF_ERROR;
|
|
200
|
3339 }
|
|
|
3340
|
|
|
3341
|
|
|
3342 ngx_http_upstream_srv_conf_t *
|
|
260
|
3343 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3344 {
|
|
|
3345 ngx_uint_t i;
|
|
260
|
3346 ngx_http_upstream_server_t *us;
|
|
200
|
3347 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3348 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3349
|
|
260
|
3350 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3351
|
|
340
|
3352 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3353 if (u->err) {
|
|
|
3354 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3355 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3356 }
|
|
|
3357
|
|
|
3358 return NULL;
|
|
|
3359 }
|
|
|
3360 }
|
|
|
3361
|
|
|
3362 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3363
|
|
|
3364 uscfp = umcf->upstreams.elts;
|
|
|
3365
|
|
|
3366 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3367
|
|
|
3368 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3369 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3370 != 0)
|
|
|
3371 {
|
|
200
|
3372 continue;
|
|
|
3373 }
|
|
|
3374
|
|
260
|
3375 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3376 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3377 {
|
|
260
|
3378 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3379 "duplicate upstream \"%V\"", &u->host);
|
|
|
3380 return NULL;
|
|
200
|
3381 }
|
|
260
|
3382
|
|
266
|
3383 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3384 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3385 "upstream \"%V\" may not have port %d",
|
|
|
3386 &u->host, u->port);
|
|
|
3387 return NULL;
|
|
|
3388 }
|
|
|
3389
|
|
|
3390 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3391 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3392 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3393 &u->host, uscfp[i]->port,
|
|
336
|
3394 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3395 return NULL;
|
|
|
3396 }
|
|
|
3397
|
|
|
3398 if (uscfp[i]->port != u->port) {
|
|
|
3399 continue;
|
|
260
|
3400 }
|
|
|
3401
|
|
324
|
3402 if (uscfp[i]->default_port && u->default_port
|
|
|
3403 && uscfp[i]->default_port != u->default_port)
|
|
|
3404 {
|
|
|
3405 continue;
|
|
|
3406 }
|
|
|
3407
|
|
260
|
3408 return uscfp[i];
|
|
200
|
3409 }
|
|
|
3410
|
|
|
3411 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3412 if (uscf == NULL) {
|
|
|
3413 return NULL;
|
|
|
3414 }
|
|
|
3415
|
|
260
|
3416 uscf->flags = flags;
|
|
200
|
3417 uscf->host = u->host;
|
|
336
|
3418 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3419 uscf->line = cf->conf_file->line;
|
|
266
|
3420 uscf->port = u->port;
|
|
|
3421 uscf->default_port = u->default_port;
|
|
260
|
3422
|
|
|
3423 if (u->naddrs == 1) {
|
|
|
3424 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3425 sizeof(ngx_http_upstream_server_t));
|
|
|
3426 if (uscf->servers == NULL) {
|
|
|
3427 return NGX_CONF_ERROR;
|
|
|
3428 }
|
|
|
3429
|
|
|
3430 us = ngx_array_push(uscf->servers);
|
|
|
3431 if (us == NULL) {
|
|
|
3432 return NGX_CONF_ERROR;
|
|
|
3433 }
|
|
|
3434
|
|
|
3435 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3436
|
|
|
3437 us->addrs = u->addrs;
|
|
|
3438 us->naddrs = u->naddrs;
|
|
|
3439 }
|
|
200
|
3440
|
|
|
3441 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3442 if (uscfp == NULL) {
|
|
|
3443 return NULL;
|
|
|
3444 }
|
|
|
3445
|
|
|
3446 *uscfp = uscf;
|
|
|
3447
|
|
|
3448 return uscf;
|
|
|
3449 }
|
|
|
3450
|
|
|
3451
|
|
356
|
3452 ngx_int_t
|
|
|
3453 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3454 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3455 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3456 {
|
|
|
3457 ngx_str_t *h;
|
|
|
3458 ngx_uint_t i, j;
|
|
|
3459 ngx_array_t hide_headers;
|
|
|
3460 ngx_hash_key_t *hk;
|
|
|
3461
|
|
|
3462 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3463 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3464 {
|
|
|
3465 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3466
|
|
|
3467 if (conf->hide_headers_hash.buckets) {
|
|
|
3468 return NGX_OK;
|
|
|
3469 }
|
|
|
3470
|
|
|
3471 conf->hide_headers = prev->hide_headers;
|
|
|
3472 conf->pass_headers = prev->pass_headers;
|
|
|
3473
|
|
|
3474 } else {
|
|
|
3475 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3476 conf->hide_headers = prev->hide_headers;
|
|
|
3477 }
|
|
|
3478
|
|
|
3479 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3480 conf->pass_headers = prev->pass_headers;
|
|
|
3481 }
|
|
|
3482 }
|
|
|
3483
|
|
|
3484 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3485 != NGX_OK)
|
|
|
3486 {
|
|
|
3487 return NGX_ERROR;
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 for (h = default_hide_headers; h->len; h++) {
|
|
|
3491 hk = ngx_array_push(&hide_headers);
|
|
|
3492 if (hk == NULL) {
|
|
|
3493 return NGX_ERROR;
|
|
|
3494 }
|
|
|
3495
|
|
|
3496 hk->key = *h;
|
|
|
3497 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3498 hk->value = (void *) 1;
|
|
|
3499 }
|
|
|
3500
|
|
|
3501 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3502
|
|
|
3503 h = conf->hide_headers->elts;
|
|
|
3504
|
|
|
3505 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3506
|
|
|
3507 hk = hide_headers.elts;
|
|
|
3508
|
|
|
3509 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3510 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3511 goto exist;
|
|
|
3512 }
|
|
|
3513 }
|
|
|
3514
|
|
|
3515 hk = ngx_array_push(&hide_headers);
|
|
|
3516 if (hk == NULL) {
|
|
|
3517 return NGX_ERROR;
|
|
|
3518 }
|
|
|
3519
|
|
|
3520 hk->key = h[i];
|
|
|
3521 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3522 hk->value = (void *) 1;
|
|
|
3523
|
|
|
3524 exist:
|
|
|
3525
|
|
|
3526 continue;
|
|
|
3527 }
|
|
|
3528 }
|
|
|
3529
|
|
|
3530 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3531
|
|
|
3532 h = conf->pass_headers->elts;
|
|
|
3533 hk = hide_headers.elts;
|
|
|
3534
|
|
|
3535 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3536 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3537
|
|
|
3538 if (hk[j].key.data == NULL) {
|
|
|
3539 continue;
|
|
|
3540 }
|
|
|
3541
|
|
|
3542 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3543 hk[j].key.data = NULL;
|
|
|
3544 break;
|
|
|
3545 }
|
|
|
3546 }
|
|
|
3547 }
|
|
|
3548 }
|
|
|
3549
|
|
|
3550 hash->hash = &conf->hide_headers_hash;
|
|
|
3551 hash->key = ngx_hash_key_lc;
|
|
|
3552 hash->pool = cf->pool;
|
|
|
3553 hash->temp_pool = NULL;
|
|
|
3554
|
|
|
3555 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3556 }
|
|
|
3557
|
|
|
3558
|
|
58
|
3559 static void *
|
|
|
3560 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3561 {
|
|
|
3562 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3563
|
|
|
3564 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3565 if (umcf == NULL) {
|
|
|
3566 return NULL;
|
|
|
3567 }
|
|
|
3568
|
|
200
|
3569 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3570 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3571 != NGX_OK)
|
|
|
3572 {
|
|
|
3573 return NGX_CONF_ERROR;
|
|
|
3574 }
|
|
|
3575
|
|
58
|
3576 return umcf;
|
|
|
3577 }
|
|
|
3578
|
|
|
3579
|
|
|
3580 static char *
|
|
200
|
3581 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3582 {
|
|
|
3583 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3584
|
|
200
|
3585 ngx_uint_t i;
|
|
|
3586 ngx_array_t headers_in;
|
|
|
3587 ngx_hash_key_t *hk;
|
|
|
3588 ngx_hash_init_t hash;
|
|
260
|
3589 ngx_http_upstream_init_pt init;
|
|
200
|
3590 ngx_http_upstream_header_t *header;
|
|
|
3591 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3592
|
|
|
3593 uscfp = umcf->upstreams.elts;
|
|
|
3594
|
|
|
3595 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3596
|
|
|
3597 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3598 ngx_http_upstream_init_round_robin;
|
|
|
3599
|
|
|
3600 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3601 return NGX_CONF_ERROR;
|
|
|
3602 }
|
|
|
3603 }
|
|
198
|
3604
|
|
212
|
3605
|
|
260
|
3606 /* upstream_headers_in_hash */
|
|
|
3607
|
|
198
|
3608 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3609 != NGX_OK)
|
|
58
|
3610 {
|
|
|
3611 return NGX_CONF_ERROR;
|
|
|
3612 }
|
|
|
3613
|
|
198
|
3614 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3615 hk = ngx_array_push(&headers_in);
|
|
|
3616 if (hk == NULL) {
|
|
|
3617 return NGX_CONF_ERROR;
|
|
|
3618 }
|
|
|
3619
|
|
|
3620 hk->key = header->name;
|
|
|
3621 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3622 hk->value = header;
|
|
|
3623 }
|
|
|
3624
|
|
|
3625 hash.hash = &umcf->headers_in_hash;
|
|
|
3626 hash.key = ngx_hash_key_lc;
|
|
|
3627 hash.max_size = 512;
|
|
244
|
3628 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3629 hash.name = "upstream_headers_in_hash";
|
|
|
3630 hash.pool = cf->pool;
|
|
|
3631 hash.temp_pool = NULL;
|
|
|
3632
|
|
|
3633 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3634 return NGX_CONF_ERROR;
|
|
|
3635 }
|
|
58
|
3636
|
|
|
3637 return NGX_CONF_OK;
|
|
|
3638 }
|
