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