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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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430
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23 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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24 ngx_http_upstream_t *u);
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25 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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26 ngx_http_upstream_t *u);
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412
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27 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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28 ngx_http_upstream_t *u);
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29 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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30 ngx_http_upstream_t *u);
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294
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31 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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430
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32 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
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33 ngx_http_upstream_t *u);
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28
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34 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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35 ngx_http_upstream_t *u);
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130
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36 static void
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37 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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430
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38 static void
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39 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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40 ngx_http_upstream_t *u);
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428
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41 static void
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42 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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43 ngx_uint_t do_write);
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130
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44 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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45 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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46 ssize_t bytes);
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58
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47 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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430
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48 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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49 ngx_http_upstream_t *u);
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428
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50 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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51 static void ngx_http_upstream_store(ngx_http_request_t *r,
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52 ngx_http_upstream_t *u);
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430
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53 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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54 ngx_http_upstream_t *u);
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28
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55 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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56 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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57 static void ngx_http_upstream_cleanup(void *data);
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28
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58 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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59 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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60
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58
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61 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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63 static ngx_int_t
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64 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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68 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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70 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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72 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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74 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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76 static ngx_int_t
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77 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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78 ngx_table_elt_t *h, ngx_uint_t offset);
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79 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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80 ngx_table_elt_t *h, ngx_uint_t offset);
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81 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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82 ngx_table_elt_t *h, ngx_uint_t offset);
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83 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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84 ngx_table_elt_t *h, ngx_uint_t offset);
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85 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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86 ngx_table_elt_t *h, ngx_uint_t offset);
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87 #if (NGX_HTTP_GZIP)
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88 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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90 #endif
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91
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122
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92 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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93 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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94 ngx_http_variable_value_t *v, uintptr_t data);
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122
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95 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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96 ngx_http_variable_value_t *v, uintptr_t data);
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97 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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98 ngx_http_variable_value_t *v, uintptr_t data);
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430
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99 static ngx_int_t ngx_http_upstream_response_length_variable(
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100 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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101
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200
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102 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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103 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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104 void *conf);
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105
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58
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106 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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107 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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108
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126
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109 #if (NGX_HTTP_SSL)
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140
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110 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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111 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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112 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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113 #endif
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114
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58
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115
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116 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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117
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118 { ngx_string("Status"),
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119 ngx_http_upstream_process_header_line,
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120 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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121 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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122
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123 { ngx_string("Content-Type"),
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124 ngx_http_upstream_process_header_line,
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125 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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126 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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127
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128 { ngx_string("Content-Length"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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131 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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132
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133 { ngx_string("Date"),
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134 ngx_http_upstream_process_header_line,
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135 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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136 ngx_http_upstream_copy_header_line,
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137 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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138
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318
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139 { ngx_string("Last-Modified"),
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140 ngx_http_upstream_process_header_line,
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141 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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142 ngx_http_upstream_copy_header_line,
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143 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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144
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58
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145 { ngx_string("Server"),
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146 ngx_http_upstream_process_header_line,
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147 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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148 ngx_http_upstream_copy_header_line,
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149 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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150
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78
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151 { ngx_string("WWW-Authenticate"),
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152 ngx_http_upstream_process_header_line,
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153 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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154 ngx_http_upstream_copy_header_line, 0, 0 },
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155
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58
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156 { ngx_string("Location"),
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392
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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159 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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160
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161 { ngx_string("Refresh"),
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162 ngx_http_upstream_ignore_header_line, 0,
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64
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163 ngx_http_upstream_rewrite_refresh, 0, 0 },
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164
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165 { ngx_string("Set-Cookie"),
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166 ngx_http_upstream_ignore_header_line, 0,
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80
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167 ngx_http_upstream_copy_header_line, 0, 1 },
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168
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169 { ngx_string("Content-Disposition"),
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170 ngx_http_upstream_ignore_header_line, 0,
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171 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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172
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173 { ngx_string("Cache-Control"),
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174 ngx_http_upstream_process_multi_header_lines,
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175 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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176 ngx_http_upstream_copy_multi_header_lines,
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64
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177 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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178
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122
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179 { ngx_string("Expires"),
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180 ngx_http_upstream_process_header_line,
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181 offsetof(ngx_http_upstream_headers_in_t, expires),
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182 ngx_http_upstream_copy_header_line,
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183 offsetof(ngx_http_headers_out_t, expires), 1 },
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184
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126
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185 { ngx_string("Accept-Ranges"),
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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188 ngx_http_upstream_copy_header_line,
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189 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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190
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58
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191 { ngx_string("Connection"),
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192 ngx_http_upstream_ignore_header_line, 0,
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64
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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194
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190
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195 { ngx_string("Keep-Alive"),
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196 ngx_http_upstream_ignore_header_line, 0,
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197 ngx_http_upstream_ignore_header_line, 0, 0 },
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198
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58
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199 { ngx_string("X-Powered-By"),
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200 ngx_http_upstream_ignore_header_line, 0,
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198
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201 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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202
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203 { ngx_string("X-Accel-Expires"),
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204 ngx_http_upstream_process_header_line,
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205 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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206 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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207
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208 { ngx_string("X-Accel-Redirect"),
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209 ngx_http_upstream_process_header_line,
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210 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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211 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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212
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76
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213 { ngx_string("X-Accel-Limit-Rate"),
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214 ngx_http_upstream_process_limit_rate, 0,
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215 ngx_http_upstream_ignore_header_line, 0, 0 },
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216
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198
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217 { ngx_string("X-Accel-Buffering"),
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218 ngx_http_upstream_process_buffering, 0,
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219 ngx_http_upstream_ignore_header_line, 0, 0 },
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220
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206
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221 { ngx_string("X-Accel-Charset"),
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222 ngx_http_upstream_process_charset, 0,
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223 ngx_http_upstream_ignore_header_line, 0, 0 },
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224
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58
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225 #if (NGX_HTTP_GZIP)
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226 { ngx_string("Content-Encoding"),
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227 ngx_http_upstream_process_header_line,
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228 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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229 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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230 #endif
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231
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64
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232 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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233 };
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28
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234
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235
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200
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236 static ngx_command_t ngx_http_upstream_commands[] = {
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237
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238 { ngx_string("upstream"),
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239 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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240 ngx_http_upstream,
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241 0,
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242 0,
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243 NULL },
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244
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245 { ngx_string("server"),
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260
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246 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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247 ngx_http_upstream_server,
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248 NGX_HTTP_SRV_CONF_OFFSET,
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249 0,
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250 NULL },
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251
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252 ngx_null_command
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253 };
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254
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255
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256 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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257 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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258 NULL, /* postconfiguration */
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259
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260 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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261 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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262
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263 NULL, /* create server configuration */
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264 NULL, /* merge server configuration */
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265
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266 NULL, /* create location configuration */
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267 NULL /* merge location configuration */
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268 };
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126
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269
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28
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270
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271 ngx_module_t ngx_http_upstream_module = {
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58
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272 NGX_MODULE_V1,
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28
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273 &ngx_http_upstream_module_ctx, /* module context */
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200
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274 ngx_http_upstream_commands, /* module directives */
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28
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275 NGX_HTTP_MODULE, /* module type */
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90
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276 NULL, /* init master */
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28
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277 NULL, /* init module */
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90
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278 NULL, /* init process */
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279 NULL, /* init thread */
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280 NULL, /* exit thread */
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281 NULL, /* exit process */
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282 NULL, /* exit master */
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283 NGX_MODULE_V1_PADDING
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28
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284 };
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285
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286
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122
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287 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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288
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298
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289 { ngx_string("upstream_addr"), NULL,
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426
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290 ngx_http_upstream_addr_variable, 0,
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291 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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292
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186
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293 { ngx_string("upstream_status"), NULL,
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426
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294 ngx_http_upstream_status_variable, 0,
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295 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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296
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186
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297 { ngx_string("upstream_response_time"), NULL,
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426
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298 ngx_http_upstream_response_time_variable, 0,
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299 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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300
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430
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301 { ngx_string("upstream_response_length"), NULL,
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302 ngx_http_upstream_response_length_variable, 0,
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303 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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304
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186
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305 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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306 };
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307
|
|
|
308
|
|
412
|
309 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
310 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
311 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
312 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
313 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
314 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
315 { 0, 0 }
|
|
|
316 };
|
|
|
317
|
|
36
|
318 void
|
|
|
319 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
320 {
|
|
348
|
321 ngx_str_t *host;
|
|
|
322 ngx_uint_t i;
|
|
|
323 ngx_connection_t *c;
|
|
|
324 ngx_resolver_ctx_t *ctx, temp;
|
|
|
325 ngx_http_cleanup_t *cln;
|
|
|
326 ngx_http_upstream_t *u;
|
|
|
327 ngx_http_core_loc_conf_t *clcf;
|
|
|
328 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
329 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
330
|
|
|
331 c = r->connection;
|
|
|
332
|
|
|
333 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
334 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
335
|
|
|
336 if (c->read->timer_set) {
|
|
|
337 ngx_del_timer(c->read);
|
|
|
338 }
|
|
|
339
|
|
178
|
340 u = r->upstream;
|
|
|
341
|
|
|
342 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
343 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
344 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
345 }
|
|
126
|
346
|
|
28
|
347 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
348
|
|
|
349 if (!c->write->active) {
|
|
80
|
350 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
351 == NGX_ERROR)
|
|
28
|
352 {
|
|
|
353 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
354 return;
|
|
|
355 }
|
|
|
356 }
|
|
|
357 }
|
|
|
358
|
|
86
|
359 if (r->request_body) {
|
|
|
360 u->request_bufs = r->request_body->bufs;
|
|
|
361 }
|
|
58
|
362
|
|
86
|
363 if (u->create_request(r) != NGX_OK) {
|
|
28
|
364 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
365 return;
|
|
|
366 }
|
|
|
367
|
|
58
|
368 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
369
|
|
|
370 u->output.pool = r->pool;
|
|
|
371 u->output.bufs.num = 1;
|
|
58
|
372 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
373 u->output.output_filter = ngx_chain_writer;
|
|
|
374 u->output.filter_ctx = &u->writer;
|
|
|
375
|
|
|
376 u->writer.pool = r->pool;
|
|
|
377
|
|
296
|
378 if (r->upstream_states == NULL) {
|
|
|
379
|
|
|
380 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
381 sizeof(ngx_http_upstream_state_t));
|
|
|
382 if (r->upstream_states == NULL) {
|
|
|
383 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
384 return;
|
|
|
385 }
|
|
|
386
|
|
|
387 } else {
|
|
|
388
|
|
|
389 u->state = ngx_array_push(r->upstream_states);
|
|
|
390 if (u->state == NULL) {
|
|
|
391 ngx_http_upstream_finalize_request(r, u,
|
|
|
392 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
393 return;
|
|
|
394 }
|
|
|
395
|
|
|
396 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
397 }
|
|
|
398
|
|
142
|
399 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
400 if (cln == NULL) {
|
|
|
401 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
402 return;
|
|
|
403 }
|
|
|
404
|
|
|
405 cln->handler = ngx_http_upstream_cleanup;
|
|
|
406 cln->data = r;
|
|
|
407 u->cleanup = &cln->handler;
|
|
|
408
|
|
320
|
409 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
410
|
|
348
|
411 if (u->resolved == NULL) {
|
|
|
412
|
|
|
413 uscf = u->conf->upstream;
|
|
|
414
|
|
|
415 } else {
|
|
|
416
|
|
356
|
417 host = &u->resolved->host;
|
|
348
|
418
|
|
|
419 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
420
|
|
|
421 uscfp = umcf->upstreams.elts;
|
|
|
422
|
|
|
423 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
424
|
|
|
425 uscf = uscfp[i];
|
|
|
426
|
|
|
427 if (uscf->host.len == host->len
|
|
416
|
428 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
429 || uscf->port == u->resolved->port)
|
|
348
|
430 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
431 {
|
|
|
432 goto found;
|
|
|
433 }
|
|
|
434 }
|
|
|
435
|
|
|
436 temp.name = *host;
|
|
|
437
|
|
|
438 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
439 if (ctx == NULL) {
|
|
|
440 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
441 return;
|
|
|
442 }
|
|
|
443
|
|
354
|
444 if (ctx == NGX_NO_RESOLVER) {
|
|
|
445 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
446 "no resolver defined to resolve %V", host);
|
|
|
447
|
|
|
448 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
449 return;
|
|
|
450 }
|
|
|
451
|
|
348
|
452 ctx->name = *host;
|
|
|
453 ctx->type = NGX_RESOLVE_A;
|
|
|
454 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
455 ctx->data = r;
|
|
|
456 ctx->timeout = clcf->resolver_timeout;
|
|
|
457
|
|
372
|
458 u->resolved->ctx = ctx;
|
|
|
459
|
|
348
|
460 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
461 u->resolved->ctx = NULL;
|
|
348
|
462 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
463 return;
|
|
|
464 }
|
|
|
465
|
|
|
466 return;
|
|
|
467 }
|
|
|
468
|
|
|
469 found:
|
|
|
470
|
|
|
471 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
472 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
473 return;
|
|
|
474 }
|
|
|
475
|
|
28
|
476 ngx_http_upstream_connect(r, u);
|
|
|
477 }
|
|
|
478
|
|
|
479
|
|
36
|
480 static void
|
|
348
|
481 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
482 {
|
|
|
483 ngx_http_request_t *r;
|
|
|
484 ngx_http_upstream_resolved_t *ur;
|
|
|
485
|
|
|
486 r = ctx->data;
|
|
|
487
|
|
|
488 r->upstream->resolved->ctx = NULL;
|
|
|
489
|
|
|
490 if (ctx->state) {
|
|
|
491 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
492 "%V could not be resolved (%i: %s)",
|
|
|
493 &ctx->name, ctx->state,
|
|
|
494 ngx_resolver_strerror(ctx->state));
|
|
|
495
|
|
|
496 ngx_resolve_name_done(ctx);
|
|
|
497 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
498 return;
|
|
|
499 }
|
|
|
500
|
|
|
501 ur = r->upstream->resolved;
|
|
|
502 ur->naddrs = ctx->naddrs;
|
|
|
503 ur->addrs = ctx->addrs;
|
|
|
504
|
|
|
505 #if (NGX_DEBUG)
|
|
|
506 {
|
|
|
507 in_addr_t addr;
|
|
|
508 ngx_uint_t i;
|
|
|
509
|
|
|
510 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
511 addr = ntohl(ur->addrs[i]);
|
|
|
512
|
|
|
513 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
514 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
515 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
516 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
517 }
|
|
|
518 }
|
|
|
519 #endif
|
|
|
520
|
|
|
521 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
522 ngx_resolve_name_done(ctx);
|
|
|
523 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
524 return;
|
|
|
525 }
|
|
|
526
|
|
|
527 ngx_resolve_name_done(ctx);
|
|
|
528
|
|
|
529 ngx_http_upstream_connect(r, r->upstream);
|
|
|
530 }
|
|
|
531
|
|
|
532
|
|
|
533 static void
|
|
426
|
534 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
535 {
|
|
|
536 ngx_connection_t *c;
|
|
|
537 ngx_http_request_t *r;
|
|
|
538 ngx_http_log_ctx_t *ctx;
|
|
|
539 ngx_http_upstream_t *u;
|
|
|
540
|
|
|
541 c = ev->data;
|
|
|
542 r = c->data;
|
|
|
543
|
|
|
544 u = r->upstream;
|
|
|
545 c = r->connection;
|
|
|
546
|
|
|
547 ctx = c->log->data;
|
|
|
548 ctx->current_request = r;
|
|
|
549
|
|
|
550 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
551 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
552
|
|
|
553 if (ev->write) {
|
|
430
|
554 u->write_event_handler(r, u);
|
|
426
|
555
|
|
|
556 } else {
|
|
430
|
557 u->read_event_handler(r, u);
|
|
426
|
558 }
|
|
|
559
|
|
|
560 ngx_http_run_posted_requests(c);
|
|
|
561 }
|
|
|
562
|
|
|
563
|
|
|
564 static void
|
|
58
|
565 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
566 {
|
|
|
567 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
568 }
|
|
|
569
|
|
|
570
|
|
|
571 static void
|
|
|
572 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
573 {
|
|
|
574 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
575 }
|
|
|
576
|
|
|
577
|
|
|
578 static void
|
|
|
579 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
580 ngx_event_t *ev)
|
|
28
|
581 {
|
|
|
582 int n;
|
|
|
583 char buf[1];
|
|
126
|
584 ngx_err_t err;
|
|
28
|
585 ngx_connection_t *c;
|
|
|
586 ngx_http_upstream_t *u;
|
|
|
587
|
|
76
|
588 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
589 "http upstream check client, write event:%d, \"%V\"",
|
|
|
590 ev->write, &r->uri);
|
|
28
|
591
|
|
58
|
592 c = r->connection;
|
|
32
|
593 u = r->upstream;
|
|
|
594
|
|
132
|
595 if (c->error) {
|
|
76
|
596 ngx_http_upstream_finalize_request(r, u,
|
|
|
597 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
598 return;
|
|
|
599 }
|
|
|
600
|
|
32
|
601 if (u->peer.connection == NULL) {
|
|
|
602 return;
|
|
|
603 }
|
|
|
604
|
|
28
|
605 #if (NGX_HAVE_KQUEUE)
|
|
|
606
|
|
|
607 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
608
|
|
|
609 if (!ev->pending_eof) {
|
|
|
610 return;
|
|
|
611 }
|
|
|
612
|
|
|
613 ev->eof = 1;
|
|
132
|
614 c->error = 1;
|
|
28
|
615
|
|
|
616 if (ev->kq_errno) {
|
|
|
617 ev->error = 1;
|
|
|
618 }
|
|
|
619
|
|
340
|
620 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
621 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
622 "kevent() reported that client closed prematurely "
|
|
|
623 "connection, so upstream connection is closed too");
|
|
28
|
624 ngx_http_upstream_finalize_request(r, u,
|
|
|
625 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
630 "kevent() reported that client closed "
|
|
|
631 "prematurely connection");
|
|
|
632
|
|
|
633 if (u->peer.connection == NULL) {
|
|
|
634 ngx_http_upstream_finalize_request(r, u,
|
|
|
635 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
636 return;
|
|
|
637 }
|
|
|
638
|
|
|
639 return;
|
|
|
640 }
|
|
|
641
|
|
|
642 #endif
|
|
|
643
|
|
|
644 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
645
|
|
|
646 err = ngx_socket_errno;
|
|
|
647
|
|
286
|
648 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
649 "http upstream recv(): %d", n);
|
|
|
650
|
|
28
|
651 /*
|
|
|
652 * we do not need to disable the write event because
|
|
|
653 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
654 */
|
|
|
655
|
|
|
656 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
657 return;
|
|
|
658 }
|
|
|
659
|
|
|
660 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
661 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
662 ngx_http_upstream_finalize_request(r, u,
|
|
|
663 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
664 return;
|
|
|
665 }
|
|
|
666 }
|
|
|
667
|
|
|
668 if (n > 0) {
|
|
|
669 return;
|
|
|
670 }
|
|
|
671
|
|
|
672 if (n == -1) {
|
|
|
673 if (err == NGX_EAGAIN) {
|
|
|
674 return;
|
|
|
675 }
|
|
|
676
|
|
|
677 ev->error = 1;
|
|
|
678
|
|
32
|
679 } else { /* n == 0 */
|
|
28
|
680 err = 0;
|
|
|
681 }
|
|
|
682
|
|
78
|
683 ev->eof = 1;
|
|
132
|
684 c->error = 1;
|
|
78
|
685
|
|
340
|
686 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
687 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
688 "client closed prematurely connection, "
|
|
|
689 "so upstream connection is closed too");
|
|
|
690 ngx_http_upstream_finalize_request(r, u,
|
|
|
691 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
692 return;
|
|
|
693 }
|
|
|
694
|
|
|
695 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
696 "client closed prematurely connection");
|
|
|
697
|
|
|
698 if (u->peer.connection == NULL) {
|
|
|
699 ngx_http_upstream_finalize_request(r, u,
|
|
|
700 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
701 return;
|
|
|
702 }
|
|
|
703 }
|
|
|
704
|
|
|
705
|
|
36
|
706 static void
|
|
|
707 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
708 {
|
|
140
|
709 ngx_int_t rc;
|
|
214
|
710 ngx_time_t *tp;
|
|
140
|
711 ngx_connection_t *c;
|
|
28
|
712
|
|
32
|
713 r->connection->log->action = "connecting to upstream";
|
|
28
|
714
|
|
|
715 r->connection->single_connection = 0;
|
|
|
716
|
|
262
|
717 if (u->state && u->state->response_sec) {
|
|
214
|
718 tp = ngx_timeofday();
|
|
262
|
719 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
720 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
721 }
|
|
|
722
|
|
296
|
723 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
724 if (u->state == NULL) {
|
|
|
725 ngx_http_upstream_finalize_request(r, u,
|
|
|
726 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
727 return;
|
|
|
728 }
|
|
|
729
|
|
|
730 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
731
|
|
|
732 tp = ngx_timeofday();
|
|
262
|
733 u->state->response_sec = tp->sec;
|
|
|
734 u->state->response_msec = tp->msec;
|
|
214
|
735
|
|
28
|
736 rc = ngx_event_connect_peer(&u->peer);
|
|
|
737
|
|
|
738 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
739 "http upstream connect: %i", rc);
|
|
|
740
|
|
|
741 if (rc == NGX_ERROR) {
|
|
|
742 ngx_http_upstream_finalize_request(r, u,
|
|
|
743 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
744 return;
|
|
|
745 }
|
|
|
746
|
|
356
|
747 u->state->peer = u->peer.name;
|
|
|
748
|
|
92
|
749 if (rc == NGX_BUSY) {
|
|
|
750 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
751 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
752 return;
|
|
92
|
753 }
|
|
|
754
|
|
326
|
755 if (rc == NGX_DECLINED) {
|
|
28
|
756 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
757 return;
|
|
|
758 }
|
|
|
759
|
|
126
|
760 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
761
|
|
28
|
762 c = u->peer.connection;
|
|
|
763
|
|
|
764 c->data = r;
|
|
140
|
765
|
|
426
|
766 c->write->handler = ngx_http_upstream_handler;
|
|
|
767 c->read->handler = ngx_http_upstream_handler;
|
|
|
768
|
|
|
769 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
770 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
771
|
|
326
|
772 c->sendfile &= r->connection->sendfile;
|
|
372
|
773 u->output.sendfile = c->sendfile;
|
|
28
|
774
|
|
|
775 c->pool = r->pool;
|
|
|
776 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
777
|
|
|
778 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
779
|
|
|
780 u->writer.out = NULL;
|
|
|
781 u->writer.last = &u->writer.out;
|
|
|
782 u->writer.connection = c;
|
|
|
783 u->writer.limit = 0;
|
|
|
784
|
|
|
785 if (u->request_sent) {
|
|
58
|
786 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
787 ngx_http_upstream_finalize_request(r, u,
|
|
|
788 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
789 return;
|
|
|
790 }
|
|
28
|
791 }
|
|
|
792
|
|
276
|
793 if (r->request_body
|
|
|
794 && r->request_body->buf
|
|
|
795 && r->request_body->temp_file
|
|
|
796 && r == r->main)
|
|
|
797 {
|
|
122
|
798 /*
|
|
|
799 * the r->request_body->buf can be reused for one request only,
|
|
|
800 * the subrequests should allocate their own temporay bufs
|
|
|
801 */
|
|
|
802
|
|
|
803 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
804 if (u->output.free == NULL) {
|
|
|
805 ngx_http_upstream_finalize_request(r, u,
|
|
|
806 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
807 return;
|
|
28
|
808 }
|
|
122
|
809
|
|
|
810 u->output.free->buf = r->request_body->buf;
|
|
|
811 u->output.free->next = NULL;
|
|
|
812 u->output.allocated = 1;
|
|
|
813
|
|
|
814 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
815 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
816 r->request_body->buf->tag = u->output.tag;
|
|
28
|
817 }
|
|
|
818
|
|
|
819 u->request_sent = 0;
|
|
|
820
|
|
|
821 if (rc == NGX_AGAIN) {
|
|
|
822 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
823 return;
|
|
|
824 }
|
|
|
825
|
|
126
|
826 #if (NGX_HTTP_SSL)
|
|
|
827
|
|
348
|
828 if (u->ssl && c->ssl == NULL) {
|
|
140
|
829 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
830 return;
|
|
|
831 }
|
|
|
832
|
|
|
833 #endif
|
|
|
834
|
|
28
|
835 ngx_http_upstream_send_request(r, u);
|
|
|
836 }
|
|
|
837
|
|
|
838
|
|
126
|
839 #if (NGX_HTTP_SSL)
|
|
|
840
|
|
|
841 static void
|
|
140
|
842 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
843 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
844 {
|
|
260
|
845 ngx_int_t rc;
|
|
140
|
846
|
|
|
847 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
848 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
849 == NGX_ERROR)
|
|
|
850 {
|
|
|
851 ngx_http_upstream_finalize_request(r, u,
|
|
|
852 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
853 return;
|
|
|
854 }
|
|
|
855
|
|
|
856 c->sendfile = 0;
|
|
168
|
857 u->output.sendfile = 0;
|
|
140
|
858
|
|
398
|
859 if (u->conf->ssl_session_reuse) {
|
|
|
860 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
861 ngx_http_upstream_finalize_request(r, u,
|
|
|
862 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
863 return;
|
|
|
864 }
|
|
140
|
865 }
|
|
|
866
|
|
190
|
867 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
868
|
|
140
|
869 rc = ngx_ssl_handshake(c);
|
|
|
870
|
|
|
871 if (rc == NGX_AGAIN) {
|
|
|
872 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
873 return;
|
|
|
874 }
|
|
|
875
|
|
|
876 ngx_http_upstream_ssl_handshake(c);
|
|
|
877 }
|
|
|
878
|
|
|
879
|
|
|
880 static void
|
|
126
|
881 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
882 {
|
|
|
883 ngx_http_request_t *r;
|
|
|
884 ngx_http_upstream_t *u;
|
|
|
885
|
|
|
886 r = c->data;
|
|
|
887 u = r->upstream;
|
|
|
888
|
|
|
889 if (c->ssl->handshaked) {
|
|
|
890
|
|
398
|
891 if (u->conf->ssl_session_reuse) {
|
|
|
892 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
893 }
|
|
260
|
894
|
|
426
|
895 c->write->handler = ngx_http_upstream_handler;
|
|
|
896 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
897
|
|
|
898 ngx_http_upstream_send_request(r, u);
|
|
|
899
|
|
|
900 return;
|
|
|
901 }
|
|
|
902
|
|
|
903 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
904
|
|
|
905 }
|
|
|
906
|
|
|
907 #endif
|
|
|
908
|
|
|
909
|
|
58
|
910 static ngx_int_t
|
|
36
|
911 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
912 {
|
|
|
913 ngx_chain_t *cl;
|
|
|
914
|
|
58
|
915 if (u->reinit_request(r) != NGX_OK) {
|
|
|
916 return NGX_ERROR;
|
|
|
917 }
|
|
|
918
|
|
356
|
919 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
920
|
|
|
921 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
922 sizeof(ngx_table_elt_t))
|
|
|
923 != NGX_OK)
|
|
58
|
924 {
|
|
|
925 return NGX_ERROR;
|
|
28
|
926 }
|
|
|
927
|
|
|
928 /* reinit the request chain */
|
|
126
|
929
|
|
58
|
930 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
931 cl->buf->pos = cl->buf->start;
|
|
|
932 cl->buf->file_pos = 0;
|
|
|
933 }
|
|
|
934
|
|
58
|
935 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
936
|
|
122
|
937 if (r->request_body && r->request_body->temp_file
|
|
146
|
938 && r != r->main && u->output.buf)
|
|
122
|
939 {
|
|
|
940 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
941 if (u->output.free == NULL) {
|
|
|
942 return NGX_ERROR;
|
|
58
|
943 }
|
|
122
|
944
|
|
|
945 u->output.free->buf = u->output.buf;
|
|
|
946 u->output.free->next = NULL;
|
|
|
947
|
|
|
948 u->output.buf->pos = u->output.buf->start;
|
|
|
949 u->output.buf->last = u->output.buf->start;
|
|
58
|
950 }
|
|
28
|
951
|
|
|
952 u->output.buf = NULL;
|
|
|
953 u->output.in = NULL;
|
|
|
954 u->output.busy = NULL;
|
|
126
|
955
|
|
130
|
956 /* reinit u->buffer */
|
|
126
|
957
|
|
28
|
958 #if 0
|
|
|
959 if (u->cache) {
|
|
130
|
960 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
961 u->buffer.last = u->buffer.pos;
|
|
28
|
962
|
|
|
963 } else {
|
|
130
|
964 u->buffer.pos = u->buffer.start;
|
|
|
965 u->buffer.last = u->buffer.start;
|
|
28
|
966 }
|
|
|
967 #else
|
|
58
|
968
|
|
130
|
969 u->buffer.pos = u->buffer.start;
|
|
|
970 u->buffer.last = u->buffer.start;
|
|
58
|
971
|
|
28
|
972 #endif
|
|
|
973
|
|
58
|
974 return NGX_OK;
|
|
28
|
975 }
|
|
|
976
|
|
|
977
|
|
36
|
978 static void
|
|
|
979 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
980 {
|
|
294
|
981 ngx_int_t rc;
|
|
32
|
982 ngx_connection_t *c;
|
|
126
|
983
|
|
28
|
984 c = u->peer.connection;
|
|
|
985
|
|
|
986 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
987 "http upstream send request");
|
|
|
988
|
|
294
|
989 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
990 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
991 return;
|
|
28
|
992 }
|
|
|
993
|
|
32
|
994 c->log->action = "sending request to upstream";
|
|
28
|
995
|
|
58
|
996 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
997
|
|
|
998 u->request_sent = 1;
|
|
|
999
|
|
|
1000 if (rc == NGX_ERROR) {
|
|
|
1001 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1002 return;
|
|
|
1003 }
|
|
|
1004
|
|
|
1005 if (c->write->timer_set) {
|
|
|
1006 ngx_del_timer(c->write);
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 if (rc == NGX_AGAIN) {
|
|
|
1010 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1011
|
|
430
|
1012 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1013 ngx_http_upstream_finalize_request(r, u,
|
|
|
1014 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1015 return;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 return;
|
|
|
1019 }
|
|
|
1020
|
|
|
1021 /* rc == NGX_OK */
|
|
|
1022
|
|
|
1023 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1024 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1025 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1026 ngx_tcp_push_n " failed");
|
|
|
1027 ngx_http_upstream_finalize_request(r, u,
|
|
|
1028 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1029 return;
|
|
28
|
1030 }
|
|
|
1031
|
|
|
1032 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1033 }
|
|
126
|
1034
|
|
28
|
1035 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1036
|
|
|
1037 #if 1
|
|
|
1038 if (c->read->ready) {
|
|
126
|
1039
|
|
28
|
1040 /* post aio operation */
|
|
|
1041
|
|
|
1042 /*
|
|
|
1043 * TODO comment
|
|
|
1044 * although we can post aio operation just in the end
|
|
|
1045 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1046 * it's better to do here because we postpone header buffer allocation
|
|
|
1047 */
|
|
|
1048
|
|
430
|
1049 ngx_http_upstream_process_header(r, u);
|
|
28
|
1050 return;
|
|
|
1051 }
|
|
|
1052 #endif
|
|
|
1053
|
|
426
|
1054 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1055
|
|
430
|
1056 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1057 ngx_http_upstream_finalize_request(r, u,
|
|
|
1058 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1059 return;
|
|
|
1060 }
|
|
|
1061 }
|
|
|
1062
|
|
|
1063
|
|
36
|
1064 static void
|
|
430
|
1065 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1066 ngx_http_upstream_t *u)
|
|
28
|
1067 {
|
|
430
|
1068 ngx_connection_t *c;
|
|
|
1069
|
|
|
1070 c = u->peer.connection;
|
|
|
1071
|
|
|
1072 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1073 "http upstream send request handler");
|
|
|
1074
|
|
430
|
1075 if (c->write->timedout) {
|
|
28
|
1076 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1077 return;
|
|
|
1078 }
|
|
|
1079
|
|
140
|
1080 #if (NGX_HTTP_SSL)
|
|
|
1081
|
|
348
|
1082 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1083 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1084 return;
|
|
|
1085 }
|
|
|
1086
|
|
|
1087 #endif
|
|
|
1088
|
|
200
|
1089 if (u->header_sent) {
|
|
426
|
1090 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1091
|
|
430
|
1092 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1093
|
|
|
1094 return;
|
|
|
1095 }
|
|
|
1096
|
|
28
|
1097 ngx_http_upstream_send_request(r, u);
|
|
|
1098 }
|
|
|
1099
|
|
|
1100
|
|
36
|
1101 static void
|
|
430
|
1102 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1103 {
|
|
64
|
1104 ssize_t n;
|
|
|
1105 ngx_int_t rc;
|
|
122
|
1106 ngx_str_t *uri, args;
|
|
198
|
1107 ngx_uint_t i, flags;
|
|
64
|
1108 ngx_list_part_t *part;
|
|
|
1109 ngx_table_elt_t *h;
|
|
|
1110 ngx_connection_t *c;
|
|
|
1111 ngx_http_upstream_header_t *hh;
|
|
|
1112 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1113
|
|
430
|
1114 c = u->peer.connection;
|
|
|
1115
|
|
|
1116 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1117 "http upstream process header");
|
|
28
|
1118
|
|
32
|
1119 c->log->action = "reading response header from upstream";
|
|
28
|
1120
|
|
430
|
1121 if (c->read->timedout) {
|
|
28
|
1122 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1123 return;
|
|
|
1124 }
|
|
126
|
1125
|
|
294
|
1126 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1127 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1128 return;
|
|
|
1129 }
|
|
|
1130
|
|
130
|
1131 if (u->buffer.start == NULL) {
|
|
|
1132 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1133 if (u->buffer.start == NULL) {
|
|
28
|
1134 ngx_http_upstream_finalize_request(r, u,
|
|
|
1135 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1136 return;
|
|
|
1137 }
|
|
|
1138
|
|
130
|
1139 u->buffer.pos = u->buffer.start;
|
|
|
1140 u->buffer.last = u->buffer.start;
|
|
|
1141 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1142 u->buffer.temporary = 1;
|
|
|
1143
|
|
|
1144 u->buffer.tag = u->output.tag;
|
|
28
|
1145
|
|
356
|
1146 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1147 sizeof(ngx_table_elt_t))
|
|
|
1148 != NGX_OK)
|
|
58
|
1149 {
|
|
|
1150 ngx_http_upstream_finalize_request(r, u,
|
|
|
1151 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1152 return;
|
|
|
1153 }
|
|
|
1154
|
|
28
|
1155 #if 0
|
|
|
1156 if (u->cache) {
|
|
130
|
1157 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1158 u->buffer.last = u->buffer.pos;
|
|
28
|
1159 }
|
|
|
1160 #endif
|
|
|
1161 }
|
|
|
1162
|
|
424
|
1163 for ( ;; ) {
|
|
|
1164
|
|
|
1165 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1166
|
|
|
1167 if (n == NGX_AGAIN) {
|
|
28
|
1168 #if 0
|
|
424
|
1169 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1170 #endif
|
|
|
1171
|
|
430
|
1172 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
424
|
1173 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1174 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1175 return;
|
|
|
1176 }
|
|
|
1177
|
|
|
1178 return;
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 if (n == 0) {
|
|
430
|
1182 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1183 "upstream prematurely closed connection");
|
|
|
1184 }
|
|
|
1185
|
|
|
1186 if (n == NGX_ERROR || n == 0) {
|
|
|
1187 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1188 return;
|
|
|
1189 }
|
|
|
1190
|
|
424
|
1191 u->buffer.last += n;
|
|
28
|
1192
|
|
|
1193 #if 0
|
|
424
|
1194 u->valid_header_in = 0;
|
|
|
1195
|
|
|
1196 u->peer.cached = 0;
|
|
28
|
1197 #endif
|
|
|
1198
|
|
424
|
1199 rc = u->process_header(r);
|
|
|
1200
|
|
|
1201 if (rc == NGX_AGAIN) {
|
|
|
1202
|
|
|
1203 if (u->buffer.pos == u->buffer.end) {
|
|
430
|
1204 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1205 "upstream sent too big header");
|
|
|
1206
|
|
|
1207 ngx_http_upstream_next(r, u,
|
|
|
1208 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1209 return;
|
|
|
1210 }
|
|
|
1211
|
|
|
1212 continue;
|
|
28
|
1213 }
|
|
|
1214
|
|
424
|
1215 break;
|
|
28
|
1216 }
|
|
|
1217
|
|
|
1218 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1219 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1220 return;
|
|
|
1221 }
|
|
|
1222
|
|
356
|
1223 if (rc == NGX_ERROR) {
|
|
28
|
1224 ngx_http_upstream_finalize_request(r, u,
|
|
|
1225 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1226 return;
|
|
|
1227 }
|
|
|
1228
|
|
|
1229 /* rc == NGX_OK */
|
|
|
1230
|
|
412
|
1231 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1232
|
|
|
1233 if (r->subrequest_in_memory) {
|
|
|
1234 u->buffer.last = u->buffer.pos;
|
|
58
|
1235 }
|
|
|
1236
|
|
412
|
1237 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1238 return;
|
|
|
1239 }
|
|
|
1240
|
|
412
|
1241 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1242 return;
|
|
|
1243 }
|
|
58
|
1244 }
|
|
|
1245
|
|
230
|
1246 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1247
|
|
356
|
1248 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1249
|
|
64
|
1250 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1251
|
|
356
|
1252 part = &u->headers_in.headers.part;
|
|
64
|
1253 h = part->elts;
|
|
|
1254
|
|
|
1255 for (i = 0; /* void */; i++) {
|
|
|
1256
|
|
|
1257 if (i >= part->nelts) {
|
|
|
1258 if (part->next == NULL) {
|
|
|
1259 break;
|
|
|
1260 }
|
|
126
|
1261
|
|
64
|
1262 part = part->next;
|
|
|
1263 h = part->elts;
|
|
|
1264 i = 0;
|
|
|
1265 }
|
|
|
1266
|
|
198
|
1267 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1268 h[i].lowcase_key, h[i].key.len);
|
|
|
1269
|
|
|
1270 if (hh && hh->redirect) {
|
|
|
1271 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1272 ngx_http_finalize_request(r,
|
|
244
|
1273 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1274 return;
|
|
|
1275 }
|
|
|
1276 }
|
|
|
1277 }
|
|
|
1278
|
|
356
|
1279 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1280 args.len = 0;
|
|
|
1281 args.data = NULL;
|
|
|
1282 flags = 0;
|
|
|
1283
|
|
|
1284 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1285 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1286 return;
|
|
|
1287 }
|
|
|
1288
|
|
|
1289 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1290 r->zero_in_uri = 1;
|
|
|
1291 }
|
|
|
1292
|
|
202
|
1293 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1294 r->method = NGX_HTTP_GET;
|
|
|
1295 }
|
|
|
1296
|
|
398
|
1297 r->valid_unparsed_uri = 0;
|
|
|
1298
|
|
122
|
1299 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1300 return;
|
|
|
1301 }
|
|
|
1302
|
|
356
|
1303 part = &u->headers_in.headers.part;
|
|
58
|
1304 h = part->elts;
|
|
|
1305
|
|
|
1306 for (i = 0; /* void */; i++) {
|
|
28
|
1307
|
|
58
|
1308 if (i >= part->nelts) {
|
|
|
1309 if (part->next == NULL) {
|
|
|
1310 break;
|
|
|
1311 }
|
|
126
|
1312
|
|
58
|
1313 part = part->next;
|
|
|
1314 h = part->elts;
|
|
|
1315 i = 0;
|
|
|
1316 }
|
|
|
1317
|
|
198
|
1318 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1319 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1320 {
|
|
198
|
1321 continue;
|
|
|
1322 }
|
|
|
1323
|
|
|
1324 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1325 h[i].lowcase_key, h[i].key.len);
|
|
|
1326
|
|
|
1327 if (hh) {
|
|
|
1328 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1329 ngx_http_upstream_finalize_request(r, u,
|
|
|
1330 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1331 return;
|
|
|
1332 }
|
|
|
1333
|
|
|
1334 continue;
|
|
|
1335 }
|
|
|
1336
|
|
|
1337 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1338 ngx_http_upstream_finalize_request(r, u,
|
|
|
1339 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1340 return;
|
|
|
1341 }
|
|
|
1342 }
|
|
|
1343
|
|
198
|
1344 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1345 r->headers_out.server->hash = 0;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1349 r->headers_out.date->hash = 0;
|
|
|
1350 }
|
|
|
1351
|
|
78
|
1352 r->headers_out.status = u->headers_in.status_n;
|
|
|
1353 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1354
|
|
364
|
1355 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1356
|
|
130
|
1357 if (r->headers_out.content_length_n != -1) {
|
|
|
1358 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1359
|
|
|
1360 } else {
|
|
|
1361 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1362 }
|
|
|
1363
|
|
248
|
1364 if (!r->subrequest_in_memory) {
|
|
|
1365 ngx_http_upstream_send_response(r, u);
|
|
|
1366 return;
|
|
|
1367 }
|
|
|
1368
|
|
|
1369 /* subrequest content in memory */
|
|
|
1370
|
|
|
1371 if (u->input_filter == NULL) {
|
|
|
1372 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1373 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1374 u->input_filter_ctx = r;
|
|
|
1375 }
|
|
|
1376
|
|
|
1377 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1378 ngx_http_upstream_finalize_request(r, u,
|
|
|
1379 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1380 return;
|
|
|
1381 }
|
|
|
1382
|
|
420
|
1383 n = u->buffer.last - u->buffer.pos;
|
|
|
1384
|
|
|
1385 if (n) {
|
|
|
1386 u->buffer.last -= n;
|
|
|
1387
|
|
430
|
1388 u->state->response_length += n;
|
|
|
1389
|
|
420
|
1390 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1391 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1392 return;
|
|
|
1393 }
|
|
|
1394
|
|
420
|
1395 if (u->length == 0) {
|
|
|
1396 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1397 return;
|
|
|
1398 }
|
|
248
|
1399 }
|
|
|
1400
|
|
426
|
1401 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1402
|
|
430
|
1403 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1404 }
|
|
|
1405
|
|
|
1406
|
|
294
|
1407 static ngx_int_t
|
|
412
|
1408 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1409 {
|
|
|
1410 ngx_uint_t status;
|
|
|
1411 ngx_http_upstream_next_t *un;
|
|
|
1412
|
|
|
1413 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
|
1414 return NGX_DECLINED;
|
|
|
1415 }
|
|
|
1416
|
|
|
1417 status = u->headers_in.status_n;
|
|
|
1418
|
|
|
1419 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1420
|
|
|
1421 if (status != un->status) {
|
|
|
1422 continue;
|
|
|
1423 }
|
|
|
1424
|
|
|
1425 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1426 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1427 return NGX_OK;
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1431 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1432 return NGX_OK;
|
|
|
1433 }
|
|
|
1434
|
|
|
1435 #if (NGX_HTTP_CACHE)
|
|
|
1436
|
|
|
1437 if (u->peer.tries == 0 && u->stale && (u->conf->use_stale & un->mask)) {
|
|
|
1438 ngx_http_upstream_finalize_request(r, u,
|
|
|
1439 ngx_http_send_cached_response(r));
|
|
|
1440 return NGX_OK;
|
|
|
1441 }
|
|
|
1442
|
|
|
1443 #endif
|
|
|
1444 }
|
|
|
1445
|
|
|
1446 return NGX_DECLINED;
|
|
|
1447 }
|
|
|
1448
|
|
|
1449
|
|
|
1450 static ngx_int_t
|
|
|
1451 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1452 ngx_http_upstream_t *u)
|
|
|
1453 {
|
|
|
1454 ngx_int_t status;
|
|
|
1455 ngx_uint_t i;
|
|
|
1456 ngx_table_elt_t *h;
|
|
|
1457 ngx_http_err_page_t *err_page;
|
|
|
1458 ngx_http_core_loc_conf_t *clcf;
|
|
|
1459
|
|
|
1460 if (!u->conf->intercept_errors) {
|
|
|
1461 return NGX_DECLINED;
|
|
|
1462 }
|
|
|
1463
|
|
|
1464 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1465
|
|
|
1466 if (clcf->error_pages == NULL) {
|
|
|
1467 return NGX_DECLINED;
|
|
|
1468 }
|
|
|
1469
|
|
|
1470 status = u->headers_in.status_n;
|
|
|
1471
|
|
|
1472 err_page = clcf->error_pages->elts;
|
|
|
1473 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1474
|
|
|
1475 if (err_page[i].status == status) {
|
|
|
1476
|
|
|
1477 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1478
|
|
|
1479 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1480
|
|
|
1481 if (h == NULL) {
|
|
|
1482 ngx_http_upstream_finalize_request(r, u,
|
|
|
1483 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1484 return NGX_OK;
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 *h = *u->headers_in.www_authenticate;
|
|
|
1488
|
|
|
1489 r->headers_out.www_authenticate = h;
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1493
|
|
|
1494 return NGX_OK;
|
|
|
1495 }
|
|
|
1496 }
|
|
|
1497
|
|
|
1498 return NGX_DECLINED;
|
|
|
1499 }
|
|
|
1500
|
|
|
1501
|
|
|
1502 static ngx_int_t
|
|
294
|
1503 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1504 {
|
|
|
1505 int err;
|
|
|
1506 socklen_t len;
|
|
|
1507
|
|
|
1508 #if (NGX_HAVE_KQUEUE)
|
|
|
1509
|
|
|
1510 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1511 if (c->write->pending_eof) {
|
|
336
|
1512 c->log->action = "connecting to upstream";
|
|
296
|
1513 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1514 "kevent() reported that connect() failed");
|
|
|
1515 return NGX_ERROR;
|
|
|
1516 }
|
|
294
|
1517
|
|
|
1518 } else
|
|
|
1519 #endif
|
|
|
1520 {
|
|
296
|
1521 err = 0;
|
|
|
1522 len = sizeof(int);
|
|
|
1523
|
|
|
1524 /*
|
|
|
1525 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1526 * Solaris returns -1 and sets errno
|
|
|
1527 */
|
|
|
1528
|
|
|
1529 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1530 == -1)
|
|
|
1531 {
|
|
|
1532 err = ngx_errno;
|
|
|
1533 }
|
|
|
1534
|
|
|
1535 if (err) {
|
|
336
|
1536 c->log->action = "connecting to upstream";
|
|
296
|
1537 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1538 return NGX_ERROR;
|
|
|
1539 }
|
|
294
|
1540 }
|
|
|
1541
|
|
|
1542 return NGX_OK;
|
|
|
1543 }
|
|
|
1544
|
|
|
1545
|
|
248
|
1546 static void
|
|
430
|
1547 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1548 ngx_http_upstream_t *u)
|
|
248
|
1549 {
|
|
430
|
1550 size_t size;
|
|
|
1551 ssize_t n;
|
|
|
1552 ngx_buf_t *b;
|
|
|
1553 ngx_event_t *rev;
|
|
|
1554 ngx_connection_t *c;
|
|
|
1555
|
|
|
1556 c = u->peer.connection;
|
|
|
1557 rev = c->read;
|
|
248
|
1558
|
|
|
1559 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1560 "http upstream process body on memory");
|
|
|
1561
|
|
|
1562 if (rev->timedout) {
|
|
|
1563 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1564 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1565 return;
|
|
|
1566 }
|
|
|
1567
|
|
|
1568 b = &u->buffer;
|
|
|
1569
|
|
|
1570 for ( ;; ) {
|
|
|
1571
|
|
|
1572 size = b->end - b->last;
|
|
|
1573
|
|
|
1574 if (size == 0) {
|
|
|
1575 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1576 "upstream buffer is too small to read repsonse");
|
|
|
1577 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1578 return;
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 n = c->recv(c, b->last, size);
|
|
|
1582
|
|
|
1583 if (n == NGX_AGAIN) {
|
|
|
1584 break;
|
|
|
1585 }
|
|
|
1586
|
|
|
1587 if (n == 0 || n == NGX_ERROR) {
|
|
|
1588 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1589 return;
|
|
|
1590 }
|
|
|
1591
|
|
430
|
1592 u->state->response_length += n;
|
|
|
1593
|
|
248
|
1594 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1595 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1596 return;
|
|
|
1597 }
|
|
|
1598
|
|
|
1599 if (!rev->ready) {
|
|
|
1600 break;
|
|
|
1601 }
|
|
|
1602 }
|
|
|
1603
|
|
430
|
1604 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1605 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1606 return;
|
|
|
1607 }
|
|
|
1608
|
|
|
1609 if (rev->active) {
|
|
|
1610 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1611
|
|
|
1612 } else if (rev->timer_set) {
|
|
|
1613 ngx_del_timer(rev);
|
|
|
1614 }
|
|
230
|
1615 }
|
|
|
1616
|
|
|
1617
|
|
|
1618 static void
|
|
|
1619 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1620 {
|
|
|
1621 int tcp_nodelay;
|
|
430
|
1622 ssize_t n;
|
|
230
|
1623 ngx_int_t rc;
|
|
|
1624 ngx_event_pipe_t *p;
|
|
|
1625 ngx_connection_t *c;
|
|
|
1626 ngx_pool_cleanup_t *cl;
|
|
|
1627 ngx_pool_cleanup_file_t *clf;
|
|
|
1628 ngx_http_core_loc_conf_t *clcf;
|
|
|
1629
|
|
58
|
1630 rc = ngx_http_send_header(r);
|
|
28
|
1631
|
|
274
|
1632 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1633 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1634 return;
|
|
|
1635 }
|
|
|
1636
|
|
|
1637 u->header_sent = 1;
|
|
|
1638
|
|
122
|
1639 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1640 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1641 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1642 clf = cl->data;
|
|
|
1643
|
|
|
1644 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1645 cl->handler(clf);
|
|
|
1646 cl->handler = NULL;
|
|
208
|
1647 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1648 break;
|
|
|
1649 }
|
|
|
1650 }
|
|
|
1651 }
|
|
|
1652 }
|
|
|
1653
|
|
132
|
1654 c = r->connection;
|
|
|
1655
|
|
130
|
1656 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1657
|
|
198
|
1658 if (!u->buffering) {
|
|
130
|
1659
|
|
|
1660 if (u->input_filter == NULL) {
|
|
|
1661 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1662 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1663 u->input_filter_ctx = r;
|
|
|
1664 }
|
|
|
1665
|
|
428
|
1666 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
1667 r->write_event_handler =
|
|
|
1668 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1669
|
|
|
1670 r->limit_rate = 0;
|
|
|
1671
|
|
|
1672 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1673 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1674 return;
|
|
|
1675 }
|
|
|
1676
|
|
132
|
1677 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1678 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1679
|
|
|
1680 tcp_nodelay = 1;
|
|
|
1681
|
|
|
1682 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1683 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1684 {
|
|
|
1685 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1686 "setsockopt(TCP_NODELAY) failed");
|
|
|
1687 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1688 return;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1692 }
|
|
|
1693
|
|
430
|
1694 n = u->buffer.last - u->buffer.pos;
|
|
|
1695
|
|
|
1696 if (n) {
|
|
130
|
1697 u->buffer.last = u->buffer.pos;
|
|
|
1698
|
|
430
|
1699 u->state->response_length += n;
|
|
|
1700
|
|
|
1701 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
1702 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1703 return;
|
|
|
1704 }
|
|
|
1705
|
|
428
|
1706 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
1707
|
|
|
1708 } else {
|
|
|
1709 u->buffer.pos = u->buffer.start;
|
|
|
1710 u->buffer.last = u->buffer.start;
|
|
|
1711
|
|
|
1712 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1713 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1714 return;
|
|
|
1715 }
|
|
336
|
1716
|
|
|
1717 if (u->peer.connection->read->ready) {
|
|
430
|
1718 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
1719 }
|
|
130
|
1720 }
|
|
|
1721
|
|
|
1722 return;
|
|
|
1723 }
|
|
|
1724
|
|
28
|
1725 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1726
|
|
|
1727 #if 0
|
|
|
1728
|
|
|
1729 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1730 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1731 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1732 ngx_close_file_n " \"%s\" failed",
|
|
|
1733 u->cache->ctx.file.name.data);
|
|
|
1734 }
|
|
|
1735 }
|
|
|
1736
|
|
340
|
1737 if (u->cacheable) {
|
|
130
|
1738 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1739
|
|
|
1740 header->expires = u->cache->ctx.expires;
|
|
|
1741 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1742 header->date = u->cache->ctx.date;
|
|
|
1743 header->length = r->headers_out.content_length_n;
|
|
|
1744 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1745
|
|
|
1746 header->key_len = u->cache->ctx.key0.len;
|
|
|
1747 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1748 header->key[header->key_len] = LF;
|
|
|
1749 }
|
|
|
1750
|
|
|
1751 #endif
|
|
|
1752
|
|
130
|
1753 p = u->pipe;
|
|
28
|
1754
|
|
|
1755 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1756 p->output_ctx = r;
|
|
|
1757 p->tag = u->output.tag;
|
|
126
|
1758 p->bufs = u->conf->bufs;
|
|
28
|
1759 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1760 p->upstream = u->peer.connection;
|
|
132
|
1761 p->downstream = c;
|
|
28
|
1762 p->pool = r->pool;
|
|
132
|
1763 p->log = c->log;
|
|
126
|
1764
|
|
340
|
1765 p->cacheable = u->cacheable || u->store;
|
|
28
|
1766
|
|
50
|
1767 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1768 if (p->temp_file == NULL) {
|
|
28
|
1769 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1770 return;
|
|
|
1771 }
|
|
|
1772
|
|
|
1773 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1774 p->temp_file->file.log = c->log;
|
|
28
|
1775 p->temp_file->path = u->conf->temp_path;
|
|
|
1776 p->temp_file->pool = r->pool;
|
|
126
|
1777
|
|
340
|
1778 if (u->cacheable || u->store) {
|
|
28
|
1779 p->temp_file->persistent = 1;
|
|
318
|
1780
|
|
28
|
1781 } else {
|
|
216
|
1782 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1783 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1784 "to a temporary file";
|
|
|
1785 }
|
|
|
1786
|
|
|
1787 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1788 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1789
|
|
50
|
1790 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1791 if (p->preread_bufs == NULL) {
|
|
28
|
1792 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1793 return;
|
|
|
1794 }
|
|
318
|
1795
|
|
130
|
1796 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1797 p->preread_bufs->next = NULL;
|
|
130
|
1798 u->buffer.recycled = 1;
|
|
|
1799
|
|
|
1800 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1801
|
|
340
|
1802 if (u->cacheable) {
|
|
318
|
1803
|
|
28
|
1804 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1805 if (p->buf_to_file == NULL) {
|
|
|
1806 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1807 return;
|
|
|
1808 }
|
|
318
|
1809
|
|
130
|
1810 p->buf_to_file->pos = u->buffer.start;
|
|
|
1811 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1812 p->buf_to_file->temporary = 1;
|
|
|
1813 }
|
|
|
1814
|
|
|
1815 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1816 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1817 p->single_buf = 1;
|
|
|
1818 }
|
|
|
1819
|
|
|
1820 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1821 p->free_bufs = 1;
|
|
|
1822
|
|
|
1823 /*
|
|
130
|
1824 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1825 * as though these bytes were read
|
|
|
1826 */
|
|
130
|
1827 u->buffer.last = u->buffer.pos;
|
|
28
|
1828
|
|
|
1829 if (u->conf->cyclic_temp_file) {
|
|
|
1830
|
|
|
1831 /*
|
|
|
1832 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1833 * because the writing a new data may interfere with sendfile()
|
|
|
1834 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1835 */
|
|
|
1836
|
|
|
1837 p->cyclic_temp_file = 1;
|
|
132
|
1838 c->sendfile = 0;
|
|
28
|
1839
|
|
|
1840 } else {
|
|
|
1841 p->cyclic_temp_file = 0;
|
|
|
1842 }
|
|
|
1843
|
|
|
1844 p->read_timeout = u->conf->read_timeout;
|
|
|
1845 p->send_timeout = clcf->send_timeout;
|
|
|
1846 p->send_lowat = clcf->send_lowat;
|
|
|
1847
|
|
428
|
1848 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
1849 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1850
|
|
430
|
1851 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
1852 }
|
|
|
1853
|
|
|
1854
|
|
36
|
1855 static void
|
|
130
|
1856 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1857 {
|
|
428
|
1858 ngx_event_t *wev;
|
|
|
1859 ngx_connection_t *c;
|
|
|
1860 ngx_http_upstream_t *u;
|
|
|
1861
|
|
|
1862 c = r->connection;
|
|
|
1863 u = r->upstream;
|
|
|
1864 wev = c->write;
|
|
|
1865
|
|
|
1866 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1867 "http upstream process non buffered downstream");
|
|
|
1868
|
|
|
1869 c->log->action = "sending to client";
|
|
|
1870
|
|
|
1871 if (wev->timedout) {
|
|
|
1872 c->timedout = 1;
|
|
|
1873 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1874 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1875 return;
|
|
|
1876 }
|
|
|
1877
|
|
|
1878 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
1879 }
|
|
|
1880
|
|
|
1881
|
|
|
1882 static void
|
|
430
|
1883 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
1884 ngx_http_upstream_t *u)
|
|
428
|
1885 {
|
|
430
|
1886 ngx_connection_t *c;
|
|
|
1887
|
|
|
1888 c = u->peer.connection;
|
|
428
|
1889
|
|
|
1890 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1891 "http upstream process non buffered upstream");
|
|
|
1892
|
|
|
1893 c->log->action = "reading upstream";
|
|
|
1894
|
|
430
|
1895 if (c->read->timedout) {
|
|
428
|
1896 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1897 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1898 return;
|
|
|
1899 }
|
|
|
1900
|
|
|
1901 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
1902 }
|
|
|
1903
|
|
|
1904
|
|
|
1905 static void
|
|
|
1906 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
1907 ngx_uint_t do_write)
|
|
130
|
1908 {
|
|
|
1909 size_t size;
|
|
|
1910 ssize_t n;
|
|
|
1911 ngx_buf_t *b;
|
|
132
|
1912 ngx_int_t rc;
|
|
428
|
1913 ngx_connection_t *downstream, *upstream;
|
|
130
|
1914 ngx_http_upstream_t *u;
|
|
|
1915 ngx_http_core_loc_conf_t *clcf;
|
|
|
1916
|
|
244
|
1917 u = r->upstream;
|
|
260
|
1918 downstream = r->connection;
|
|
|
1919 upstream = u->peer.connection;
|
|
130
|
1920
|
|
|
1921 b = &u->buffer;
|
|
|
1922
|
|
428
|
1923 do_write = do_write || u->length == 0;
|
|
130
|
1924
|
|
|
1925 for ( ;; ) {
|
|
|
1926
|
|
|
1927 if (do_write) {
|
|
|
1928
|
|
|
1929 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1930 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1931
|
|
260
|
1932 if (downstream->destroyed) {
|
|
132
|
1933 return;
|
|
|
1934 }
|
|
|
1935
|
|
|
1936 if (rc == NGX_ERROR) {
|
|
130
|
1937 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1938 return;
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1942 &u->out_bufs, u->output.tag);
|
|
|
1943 }
|
|
|
1944
|
|
|
1945 if (u->busy_bufs == NULL) {
|
|
|
1946
|
|
|
1947 if (u->length == 0
|
|
260
|
1948 || upstream->read->eof
|
|
|
1949 || upstream->read->error)
|
|
130
|
1950 {
|
|
|
1951 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1952 return;
|
|
|
1953 }
|
|
|
1954
|
|
|
1955 b->pos = b->start;
|
|
|
1956 b->last = b->start;
|
|
|
1957 }
|
|
|
1958 }
|
|
|
1959
|
|
|
1960 size = b->end - b->last;
|
|
|
1961
|
|
|
1962 if (size > u->length) {
|
|
|
1963 size = u->length;
|
|
|
1964 }
|
|
|
1965
|
|
260
|
1966 if (size && upstream->read->ready) {
|
|
|
1967
|
|
|
1968 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1969
|
|
|
1970 if (n == NGX_AGAIN) {
|
|
|
1971 break;
|
|
|
1972 }
|
|
|
1973
|
|
|
1974 if (n > 0) {
|
|
430
|
1975 u->state->response_length += n;
|
|
|
1976
|
|
130
|
1977 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1978 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1979 return;
|
|
|
1980 }
|
|
|
1981 }
|
|
|
1982
|
|
|
1983 do_write = 1;
|
|
|
1984
|
|
|
1985 continue;
|
|
|
1986 }
|
|
|
1987
|
|
|
1988 break;
|
|
|
1989 }
|
|
|
1990
|
|
428
|
1991 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1992
|
|
260
|
1993 if (downstream->data == r) {
|
|
|
1994 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
1995 != NGX_OK)
|
|
132
|
1996 {
|
|
|
1997 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1998 return;
|
|
|
1999 }
|
|
130
|
2000 }
|
|
|
2001
|
|
276
|
2002 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2003 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2004
|
|
|
2005 } else if (downstream->write->timer_set) {
|
|
|
2006 ngx_del_timer(downstream->write);
|
|
130
|
2007 }
|
|
|
2008
|
|
426
|
2009 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2010 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2011 return;
|
|
|
2012 }
|
|
|
2013
|
|
276
|
2014 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2015 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2016
|
|
|
2017 } else if (upstream->read->timer_set) {
|
|
|
2018 ngx_del_timer(upstream->read);
|
|
130
|
2019 }
|
|
|
2020 }
|
|
|
2021
|
|
|
2022
|
|
|
2023 static ngx_int_t
|
|
|
2024 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2025 {
|
|
|
2026 return NGX_OK;
|
|
|
2027 }
|
|
|
2028
|
|
|
2029
|
|
|
2030 static ngx_int_t
|
|
|
2031 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2032 {
|
|
|
2033 ngx_http_request_t *r = data;
|
|
|
2034
|
|
|
2035 ngx_buf_t *b;
|
|
|
2036 ngx_chain_t *cl, **ll;
|
|
|
2037 ngx_http_upstream_t *u;
|
|
|
2038
|
|
|
2039 u = r->upstream;
|
|
|
2040
|
|
|
2041 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2042 ll = &cl->next;
|
|
|
2043 }
|
|
|
2044
|
|
|
2045 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2046 if (cl == NULL) {
|
|
|
2047 return NGX_ERROR;
|
|
|
2048 }
|
|
|
2049
|
|
|
2050 *ll = cl;
|
|
|
2051
|
|
|
2052 cl->buf->flush = 1;
|
|
|
2053 cl->buf->memory = 1;
|
|
|
2054
|
|
|
2055 b = &u->buffer;
|
|
|
2056
|
|
|
2057 cl->buf->pos = b->last;
|
|
|
2058 b->last += bytes;
|
|
|
2059 cl->buf->last = b->last;
|
|
366
|
2060 cl->buf->tag = u->output.tag;
|
|
130
|
2061
|
|
|
2062 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2063 return NGX_OK;
|
|
|
2064 }
|
|
|
2065
|
|
|
2066 u->length -= bytes;
|
|
|
2067
|
|
|
2068 return NGX_OK;
|
|
|
2069 }
|
|
|
2070
|
|
|
2071
|
|
|
2072 static void
|
|
58
|
2073 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2074 {
|
|
428
|
2075 ngx_event_t *wev;
|
|
|
2076 ngx_connection_t *c;
|
|
58
|
2077 ngx_event_pipe_t *p;
|
|
28
|
2078 ngx_http_upstream_t *u;
|
|
|
2079
|
|
428
|
2080 c = r->connection;
|
|
28
|
2081 u = r->upstream;
|
|
130
|
2082 p = u->pipe;
|
|
428
|
2083 wev = c->write;
|
|
|
2084
|
|
|
2085 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2086 "http upstream process downstream");
|
|
|
2087
|
|
|
2088 c->log->action = "sending to client";
|
|
|
2089
|
|
|
2090 if (wev->timedout) {
|
|
|
2091
|
|
|
2092 if (wev->delayed) {
|
|
|
2093
|
|
|
2094 wev->timedout = 0;
|
|
|
2095 wev->delayed = 0;
|
|
|
2096
|
|
|
2097 if (!wev->ready) {
|
|
|
2098 ngx_add_timer(wev, p->send_timeout);
|
|
|
2099
|
|
|
2100 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2101 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2102 }
|
|
|
2103
|
|
|
2104 return;
|
|
|
2105 }
|
|
|
2106
|
|
|
2107 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2108
|
|
|
2109 if (c->destroyed) {
|
|
76
|
2110 return;
|
|
|
2111 }
|
|
|
2112
|
|
428
|
2113 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2114 return;
|
|
76
|
2115 }
|
|
28
|
2116
|
|
|
2117 } else {
|
|
428
|
2118 p->downstream_error = 1;
|
|
|
2119 c->timedout = 1;
|
|
|
2120 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2121 }
|
|
|
2122
|
|
|
2123 } else {
|
|
428
|
2124
|
|
|
2125 if (wev->delayed) {
|
|
|
2126
|
|
76
|
2127 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2128 "http downstream delayed");
|
|
|
2129
|
|
428
|
2130 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2131 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2132 }
|
|
|
2133
|
|
|
2134 return;
|
|
|
2135 }
|
|
|
2136
|
|
428
|
2137 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
|
2138
|
|
|
2139 if (c->destroyed) {
|
|
132
|
2140 return;
|
|
|
2141 }
|
|
|
2142
|
|
28
|
2143 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2144 return;
|
|
|
2145 }
|
|
|
2146 }
|
|
126
|
2147
|
|
428
|
2148 ngx_http_upstream_process_request(r);
|
|
|
2149 }
|
|
|
2150
|
|
|
2151
|
|
|
2152 static void
|
|
430
|
2153 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2154 ngx_http_upstream_t *u)
|
|
428
|
2155 {
|
|
430
|
2156 ngx_connection_t *c;
|
|
|
2157
|
|
|
2158 c = u->peer.connection;
|
|
428
|
2159
|
|
|
2160 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2161 "http upstream process upstream");
|
|
|
2162
|
|
|
2163 c->log->action = "reading upstream";
|
|
|
2164
|
|
430
|
2165 if (c->read->timedout) {
|
|
|
2166 u->pipe->upstream_error = 1;
|
|
428
|
2167 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2168
|
|
|
2169 } else {
|
|
|
2170 c = r->connection;
|
|
|
2171
|
|
430
|
2172 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
428
|
2173
|
|
|
2174 if (c->destroyed) {
|
|
|
2175 return;
|
|
|
2176 }
|
|
|
2177
|
|
|
2178 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2179 return;
|
|
|
2180 }
|
|
|
2181 }
|
|
|
2182
|
|
|
2183 ngx_http_upstream_process_request(r);
|
|
|
2184 }
|
|
|
2185
|
|
|
2186
|
|
|
2187 static void
|
|
|
2188 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2189 {
|
|
|
2190 ngx_temp_file_t *tf;
|
|
|
2191 ngx_event_pipe_t *p;
|
|
|
2192 ngx_http_upstream_t *u;
|
|
|
2193
|
|
|
2194 u = r->upstream;
|
|
|
2195 p = u->pipe;
|
|
|
2196
|
|
28
|
2197 if (u->peer.connection) {
|
|
|
2198
|
|
318
|
2199 if (u->store) {
|
|
|
2200
|
|
364
|
2201 tf = u->pipe->temp_file;
|
|
|
2202
|
|
|
2203 if (p->upstream_eof
|
|
|
2204 && u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2205 && (u->headers_in.content_length_n == -1
|
|
|
2206 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2207 {
|
|
318
|
2208 ngx_http_upstream_store(r, u);
|
|
|
2209
|
|
|
2210 } else if ((p->upstream_error
|
|
|
2211 || (p->upstream_eof
|
|
|
2212 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
364
|
2213 && tf->file.fd != NGX_INVALID_FILE)
|
|
318
|
2214 {
|
|
364
|
2215 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2216
|
|
318
|
2217 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2218 ngx_delete_file_n " \"%s\" failed",
|
|
|
2219 u->pipe->temp_file->file.name.data);
|
|
|
2220 }
|
|
|
2221 }
|
|
|
2222 }
|
|
|
2223
|
|
28
|
2224 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2225
|
|
340
|
2226 if (p->upstream_done && u->cacheable) {
|
|
28
|
2227 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2228 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2229 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2230 return;
|
|
|
2231 }
|
|
|
2232
|
|
340
|
2233 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2234
|
|
|
2235 /* TODO: check length & update cache */
|
|
|
2236
|
|
|
2237 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2238 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2239 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2240 return;
|
|
|
2241 }
|
|
|
2242 }
|
|
|
2243
|
|
|
2244 #endif
|
|
|
2245
|
|
|
2246 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2247 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2248 "http upstream exit: %p", p->out);
|
|
28
|
2249 #if 0
|
|
|
2250 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2251 #endif
|
|
|
2252 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2253 return;
|
|
|
2254 }
|
|
|
2255 }
|
|
|
2256
|
|
|
2257 if (p->downstream_error) {
|
|
428
|
2258 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2259 "http upstream downstream error");
|
|
28
|
2260
|
|
340
|
2261 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2262 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2263 }
|
|
|
2264 }
|
|
|
2265 }
|
|
|
2266
|
|
|
2267
|
|
36
|
2268 static void
|
|
318
|
2269 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2270 {
|
|
370
|
2271 size_t root;
|
|
|
2272 time_t lm;
|
|
|
2273 ngx_str_t path;
|
|
|
2274 ngx_temp_file_t *tf;
|
|
|
2275 ngx_ext_rename_file_t ext;
|
|
318
|
2276
|
|
358
|
2277 tf = u->pipe->temp_file;
|
|
|
2278
|
|
|
2279 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2280
|
|
|
2281 /* create file for empty 200 response */
|
|
|
2282
|
|
|
2283 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2284 if (tf == NULL) {
|
|
|
2285 return;
|
|
|
2286 }
|
|
|
2287
|
|
|
2288 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2289 tf->file.log = r->connection->log;
|
|
|
2290 tf->path = u->conf->temp_path;
|
|
|
2291 tf->pool = r->pool;
|
|
|
2292 tf->persistent = 1;
|
|
|
2293
|
|
|
2294 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2295 tf->persistent, tf->clean, tf->access)
|
|
|
2296 != NGX_OK)
|
|
|
2297 {
|
|
|
2298 return;
|
|
|
2299 }
|
|
|
2300
|
|
|
2301 u->pipe->temp_file = tf;
|
|
|
2302 }
|
|
|
2303
|
|
370
|
2304 ext.access = u->conf->store_access;
|
|
430
|
2305 ext.path_access = u->conf->store_access;
|
|
370
|
2306 ext.time = -1;
|
|
|
2307 ext.create_path = 1;
|
|
|
2308 ext.delete_file = 1;
|
|
430
|
2309 ext.log_rename_error = 1;
|
|
370
|
2310 ext.log = r->connection->log;
|
|
318
|
2311
|
|
356
|
2312 if (u->headers_in.last_modified) {
|
|
|
2313
|
|
370
|
2314 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2315 u->headers_in.last_modified->value.len);
|
|
318
|
2316
|
|
|
2317 if (lm != NGX_ERROR) {
|
|
370
|
2318 ext.time = lm;
|
|
|
2319 ext.fd = tf->file.fd;
|
|
318
|
2320 }
|
|
|
2321 }
|
|
|
2322
|
|
320
|
2323 if (u->conf->store_lengths == NULL) {
|
|
|
2324
|
|
|
2325 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2326
|
|
|
2327 } else {
|
|
|
2328 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2329 u->conf->store_values->elts)
|
|
|
2330 == NULL)
|
|
|
2331 {
|
|
|
2332 return;
|
|
|
2333 }
|
|
|
2334 }
|
|
318
|
2335
|
|
|
2336 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2337 "upstream stores \"%s\" to \"%s\"",
|
|
|
2338 tf->file.name.data, path.data);
|
|
|
2339
|
|
|
2340 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2341 }
|
|
|
2342
|
|
|
2343
|
|
|
2344 static void
|
|
430
|
2345 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2346 {
|
|
430
|
2347 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2348 "http upstream dummy handler");
|
|
|
2349 }
|
|
|
2350
|
|
|
2351
|
|
36
|
2352 static void
|
|
|
2353 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2354 ngx_uint_t ft_type)
|
|
28
|
2355 {
|
|
260
|
2356 ngx_uint_t status, state;
|
|
28
|
2357
|
|
|
2358 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2359 "http next upstream, %xi", ft_type);
|
|
28
|
2360
|
|
|
2361 #if 0
|
|
|
2362 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2363 #endif
|
|
|
2364
|
|
74
|
2365 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2366 state = NGX_PEER_NEXT;
|
|
74
|
2367 } else {
|
|
260
|
2368 state = NGX_PEER_FAILED;
|
|
28
|
2369 }
|
|
74
|
2370
|
|
326
|
2371 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2372 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2373 }
|
|
74
|
2374
|
|
28
|
2375 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2376 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2377 "upstream timed out");
|
|
|
2378 }
|
|
126
|
2379
|
|
28
|
2380 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2381 status = 0;
|
|
|
2382
|
|
|
2383 } else {
|
|
|
2384 switch(ft_type) {
|
|
|
2385
|
|
|
2386 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2387 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2388 break;
|
|
|
2389
|
|
|
2390 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2391 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2392 break;
|
|
|
2393
|
|
|
2394 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2395 status = NGX_HTTP_NOT_FOUND;
|
|
|
2396 break;
|
|
|
2397
|
|
|
2398 /*
|
|
|
2399 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2400 * never reach here
|
|
|
2401 */
|
|
|
2402
|
|
|
2403 default:
|
|
|
2404 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2405 }
|
|
|
2406 }
|
|
|
2407
|
|
132
|
2408 if (r->connection->error) {
|
|
28
|
2409 ngx_http_upstream_finalize_request(r, u,
|
|
|
2410 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2411 return;
|
|
|
2412 }
|
|
|
2413
|
|
|
2414 if (status) {
|
|
|
2415 u->state->status = status;
|
|
|
2416
|
|
74
|
2417 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2418
|
|
|
2419 #if (NGX_HTTP_CACHE)
|
|
|
2420
|
|
|
2421 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2422 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2423 ngx_http_send_cached_response(r));
|
|
28
|
2424 return;
|
|
|
2425 }
|
|
|
2426
|
|
|
2427 #endif
|
|
|
2428
|
|
|
2429 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2430 return;
|
|
|
2431 }
|
|
|
2432 }
|
|
|
2433
|
|
|
2434 if (u->peer.connection) {
|
|
|
2435 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2436 "close http upstream connection: %d",
|
|
|
2437 u->peer.connection->fd);
|
|
126
|
2438 #if (NGX_HTTP_SSL)
|
|
260
|
2439
|
|
126
|
2440 if (u->peer.connection->ssl) {
|
|
260
|
2441 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2442 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2443
|
|
|
2444 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2445 }
|
|
|
2446 #endif
|
|
260
|
2447
|
|
28
|
2448 ngx_close_connection(u->peer.connection);
|
|
|
2449 }
|
|
|
2450
|
|
|
2451 #if 0
|
|
|
2452 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2453 ngx_http_upstream_busy_lock(p);
|
|
|
2454 return;
|
|
|
2455 }
|
|
|
2456 #endif
|
|
|
2457
|
|
|
2458 ngx_http_upstream_connect(r, u);
|
|
|
2459 }
|
|
|
2460
|
|
|
2461
|
|
36
|
2462 static void
|
|
118
|
2463 ngx_http_upstream_cleanup(void *data)
|
|
|
2464 {
|
|
|
2465 ngx_http_request_t *r = data;
|
|
|
2466
|
|
356
|
2467 ngx_http_upstream_t *u;
|
|
|
2468
|
|
118
|
2469 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2470 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2471
|
|
356
|
2472 u = r->upstream;
|
|
|
2473
|
|
|
2474 if (u->resolved && u->resolved->ctx) {
|
|
|
2475 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2476 }
|
|
|
2477
|
|
356
|
2478 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2479 }
|
|
|
2480
|
|
|
2481
|
|
|
2482 static void
|
|
36
|
2483 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2484 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2485 {
|
|
262
|
2486 ngx_time_t *tp;
|
|
112
|
2487
|
|
32
|
2488 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2489 "finalize http upstream request: %i", rc);
|
|
28
|
2490
|
|
432
|
2491 if (u->cleanup) {
|
|
|
2492 *u->cleanup = NULL;
|
|
|
2493 }
|
|
118
|
2494
|
|
348
|
2495 if (u->state && u->state->response_sec) {
|
|
112
|
2496 tp = ngx_timeofday();
|
|
262
|
2497 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2498 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
430
|
2499
|
|
|
2500 if (u->pipe) {
|
|
|
2501 u->state->response_length = u->pipe->read_length;
|
|
|
2502 }
|
|
112
|
2503 }
|
|
|
2504
|
|
28
|
2505 u->finalize_request(r, rc);
|
|
|
2506
|
|
348
|
2507 if (u->peer.free) {
|
|
|
2508 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2509 }
|
|
260
|
2510
|
|
28
|
2511 if (u->peer.connection) {
|
|
260
|
2512
|
|
126
|
2513 #if (NGX_HTTP_SSL)
|
|
|
2514
|
|
|
2515 /* TODO: do not shutdown persistent connection */
|
|
|
2516
|
|
|
2517 if (u->peer.connection->ssl) {
|
|
260
|
2518
|
|
|
2519 /*
|
|
|
2520 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2521 * and do not wait its "close notify" shutdown alert.
|
|
|
2522 * It is acceptable according to the TLS standard.
|
|
|
2523 */
|
|
|
2524
|
|
|
2525 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2526
|
|
|
2527 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2528 }
|
|
|
2529 #endif
|
|
260
|
2530
|
|
|
2531 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2532 "close http upstream connection: %d",
|
|
|
2533 u->peer.connection->fd);
|
|
|
2534
|
|
28
|
2535 ngx_close_connection(u->peer.connection);
|
|
|
2536 }
|
|
|
2537
|
|
32
|
2538 u->peer.connection = NULL;
|
|
|
2539
|
|
112
|
2540 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2541 {
|
|
|
2542 rc = 0;
|
|
|
2543 }
|
|
|
2544
|
|
130
|
2545 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2546 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2547 "http upstream temp fd: %d",
|
|
130
|
2548 u->pipe->temp_file->file.fd);
|
|
28
|
2549 }
|
|
|
2550
|
|
|
2551 #if 0
|
|
|
2552 if (u->cache) {
|
|
|
2553 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2554 "http upstream cache fd: %d",
|
|
28
|
2555 u->cache->ctx.file.fd);
|
|
|
2556 }
|
|
|
2557 #endif
|
|
|
2558
|
|
64
|
2559 if (rc == NGX_DECLINED) {
|
|
|
2560 return;
|
|
|
2561 }
|
|
|
2562
|
|
32
|
2563 r->connection->log->action = "sending to client";
|
|
|
2564
|
|
426
|
2565 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2566 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2567 }
|
|
|
2568
|
|
|
2569 ngx_http_finalize_request(r, rc);
|
|
|
2570 }
|
|
|
2571
|
|
|
2572
|
|
58
|
2573 static ngx_int_t
|
|
|
2574 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2575 ngx_uint_t offset)
|
|
126
|
2576 {
|
|
58
|
2577 ngx_table_elt_t **ph;
|
|
126
|
2578
|
|
58
|
2579 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2580
|
|
|
2581 if (*ph == NULL) {
|
|
|
2582 *ph = h;
|
|
|
2583 }
|
|
|
2584
|
|
|
2585 return NGX_OK;
|
|
|
2586 }
|
|
|
2587
|
|
|
2588
|
|
|
2589 static ngx_int_t
|
|
|
2590 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2591 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2592 {
|
|
|
2593 ngx_array_t *pa;
|
|
|
2594 ngx_table_elt_t **ph;
|
|
|
2595
|
|
|
2596 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2597
|
|
|
2598 if (pa->elts == NULL) {
|
|
|
2599 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2600 {
|
|
|
2601 return NGX_ERROR;
|
|
|
2602 }
|
|
|
2603 }
|
|
|
2604
|
|
|
2605 ph = ngx_array_push(pa);
|
|
|
2606 if (ph == NULL) {
|
|
|
2607 return NGX_ERROR;
|
|
|
2608 }
|
|
|
2609
|
|
|
2610 *ph = h;
|
|
|
2611
|
|
|
2612 return NGX_OK;
|
|
|
2613 }
|
|
|
2614
|
|
|
2615
|
|
|
2616 static ngx_int_t
|
|
|
2617 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2618 ngx_uint_t offset)
|
|
|
2619 {
|
|
|
2620 return NGX_OK;
|
|
|
2621 }
|
|
|
2622
|
|
|
2623
|
|
|
2624 static ngx_int_t
|
|
76
|
2625 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2626 ngx_uint_t offset)
|
|
126
|
2627 {
|
|
76
|
2628 ngx_int_t n;
|
|
|
2629
|
|
|
2630 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2631
|
|
|
2632 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2633
|
|
|
2634 if (n != NGX_ERROR) {
|
|
|
2635 r->limit_rate = (size_t) n;
|
|
|
2636 }
|
|
|
2637
|
|
|
2638 return NGX_OK;
|
|
|
2639 }
|
|
|
2640
|
|
|
2641
|
|
|
2642 static ngx_int_t
|
|
198
|
2643 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2644 ngx_uint_t offset)
|
|
|
2645 {
|
|
|
2646 u_char c0, c1, c2;
|
|
|
2647
|
|
|
2648 if (r->upstream->conf->change_buffering) {
|
|
|
2649
|
|
|
2650 if (h->value.len == 2) {
|
|
|
2651 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2652 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2653
|
|
|
2654 if (c0 == 'n' && c1 == 'o') {
|
|
|
2655 r->upstream->buffering = 0;
|
|
|
2656 }
|
|
|
2657
|
|
|
2658 } else if (h->value.len == 3) {
|
|
|
2659 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2660 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2661 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2662
|
|
|
2663 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2664 r->upstream->buffering = 1;
|
|
|
2665 }
|
|
|
2666 }
|
|
|
2667 }
|
|
|
2668
|
|
|
2669 return NGX_OK;
|
|
|
2670 }
|
|
|
2671
|
|
|
2672
|
|
|
2673 static ngx_int_t
|
|
206
|
2674 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2675 ngx_uint_t offset)
|
|
|
2676 {
|
|
|
2677 r->headers_out.override_charset = &h->value;
|
|
|
2678
|
|
|
2679 return NGX_OK;
|
|
|
2680 }
|
|
|
2681
|
|
|
2682
|
|
|
2683 static ngx_int_t
|
|
58
|
2684 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2685 ngx_uint_t offset)
|
|
|
2686 {
|
|
122
|
2687 ngx_table_elt_t *ho, **ph;
|
|
58
|
2688
|
|
|
2689 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2690 if (ho == NULL) {
|
|
|
2691 return NGX_ERROR;
|
|
|
2692 }
|
|
|
2693
|
|
|
2694 *ho = *h;
|
|
|
2695
|
|
122
|
2696 if (offset) {
|
|
|
2697 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2698 *ph = ho;
|
|
|
2699 }
|
|
|
2700
|
|
58
|
2701 return NGX_OK;
|
|
|
2702 }
|
|
|
2703
|
|
|
2704
|
|
|
2705 static ngx_int_t
|
|
|
2706 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2707 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2708 {
|
|
|
2709 ngx_array_t *pa;
|
|
|
2710 ngx_table_elt_t *ho, **ph;
|
|
|
2711
|
|
|
2712 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2713
|
|
|
2714 if (pa->elts == NULL) {
|
|
|
2715 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2716 {
|
|
|
2717 return NGX_ERROR;
|
|
|
2718 }
|
|
|
2719 }
|
|
|
2720
|
|
|
2721 ph = ngx_array_push(pa);
|
|
|
2722 if (ph == NULL) {
|
|
|
2723 return NGX_ERROR;
|
|
|
2724 }
|
|
|
2725
|
|
|
2726 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2727 if (ho == NULL) {
|
|
|
2728 return NGX_ERROR;
|
|
|
2729 }
|
|
|
2730
|
|
|
2731 *ho = *h;
|
|
|
2732 *ph = ho;
|
|
|
2733
|
|
|
2734 return NGX_OK;
|
|
|
2735 }
|
|
|
2736
|
|
|
2737
|
|
|
2738 static ngx_int_t
|
|
|
2739 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2740 ngx_uint_t offset)
|
|
|
2741 {
|
|
206
|
2742 u_char *p, *last;
|
|
|
2743
|
|
|
2744 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2745 r->headers_out.content_type = h->value;
|
|
|
2746
|
|
206
|
2747 for (p = h->value.data; *p; p++) {
|
|
|
2748
|
|
|
2749 if (*p != ';') {
|
|
|
2750 continue;
|
|
|
2751 }
|
|
|
2752
|
|
|
2753 last = p;
|
|
|
2754
|
|
|
2755 while (*++p == ' ') { /* void */ }
|
|
|
2756
|
|
372
|
2757 if (*p == '\0') {
|
|
|
2758 return NGX_OK;
|
|
|
2759 }
|
|
|
2760
|
|
286
|
2761 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2762 continue;
|
|
|
2763 }
|
|
|
2764
|
|
|
2765 p += 8;
|
|
|
2766
|
|
|
2767 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2768
|
|
410
|
2769 if (*p == '"') {
|
|
|
2770 p++;
|
|
|
2771 }
|
|
|
2772
|
|
|
2773 last = h->value.data + h->value.len;
|
|
|
2774
|
|
|
2775 if (*(last - 1) == '"') {
|
|
|
2776 last--;
|
|
|
2777 }
|
|
|
2778
|
|
|
2779 r->headers_out.charset.len = last - p;
|
|
206
|
2780 r->headers_out.charset.data = p;
|
|
292
|
2781
|
|
|
2782 return NGX_OK;
|
|
206
|
2783 }
|
|
|
2784
|
|
58
|
2785 return NGX_OK;
|
|
|
2786 }
|
|
|
2787
|
|
|
2788
|
|
|
2789 static ngx_int_t
|
|
|
2790 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2791 ngx_uint_t offset)
|
|
|
2792 {
|
|
|
2793 ngx_table_elt_t *ho;
|
|
|
2794
|
|
|
2795 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2796 if (ho == NULL) {
|
|
|
2797 return NGX_ERROR;
|
|
|
2798 }
|
|
|
2799
|
|
|
2800 *ho = *h;
|
|
|
2801
|
|
|
2802 r->headers_out.content_length = ho;
|
|
|
2803 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2804
|
|
|
2805 return NGX_OK;
|
|
|
2806 }
|
|
|
2807
|
|
|
2808
|
|
|
2809 static ngx_int_t
|
|
|
2810 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2811 ngx_uint_t offset)
|
|
|
2812 {
|
|
|
2813 ngx_int_t rc;
|
|
|
2814 ngx_table_elt_t *ho;
|
|
|
2815
|
|
|
2816 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2817 if (ho == NULL) {
|
|
|
2818 return NGX_ERROR;
|
|
|
2819 }
|
|
|
2820
|
|
|
2821 *ho = *h;
|
|
|
2822
|
|
|
2823 if (r->upstream->rewrite_redirect) {
|
|
|
2824 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2825
|
|
78
|
2826 if (rc == NGX_DECLINED) {
|
|
|
2827 return NGX_OK;
|
|
|
2828 }
|
|
|
2829
|
|
58
|
2830 if (rc == NGX_OK) {
|
|
|
2831 r->headers_out.location = ho;
|
|
|
2832
|
|
|
2833 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2834 "rewritten location: \"%V\"", &ho->value);
|
|
|
2835 }
|
|
|
2836
|
|
|
2837 return rc;
|
|
|
2838 }
|
|
|
2839
|
|
348
|
2840 if (ho->value.data[0] != '/') {
|
|
|
2841 r->headers_out.location = ho;
|
|
|
2842 }
|
|
|
2843
|
|
58
|
2844 /*
|
|
|
2845 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2846 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2847 */
|
|
|
2848
|
|
|
2849 return NGX_OK;
|
|
|
2850 }
|
|
|
2851
|
|
|
2852
|
|
|
2853 static ngx_int_t
|
|
|
2854 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2855 ngx_uint_t offset)
|
|
|
2856 {
|
|
|
2857 u_char *p;
|
|
|
2858 ngx_int_t rc;
|
|
|
2859 ngx_table_elt_t *ho;
|
|
|
2860
|
|
|
2861 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2862 if (ho == NULL) {
|
|
|
2863 return NGX_ERROR;
|
|
|
2864 }
|
|
|
2865
|
|
|
2866 *ho = *h;
|
|
|
2867
|
|
|
2868 if (r->upstream->rewrite_redirect) {
|
|
|
2869
|
|
340
|
2870 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2871
|
|
|
2872 if (p) {
|
|
|
2873 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2874
|
|
|
2875 } else {
|
|
|
2876 return NGX_OK;
|
|
|
2877 }
|
|
|
2878
|
|
78
|
2879 if (rc == NGX_DECLINED) {
|
|
|
2880 return NGX_OK;
|
|
|
2881 }
|
|
|
2882
|
|
58
|
2883 if (rc == NGX_OK) {
|
|
348
|
2884 r->headers_out.refresh = ho;
|
|
|
2885
|
|
58
|
2886 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2887 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2888 }
|
|
|
2889
|
|
|
2890 return rc;
|
|
|
2891 }
|
|
|
2892
|
|
348
|
2893 r->headers_out.refresh = ho;
|
|
|
2894
|
|
58
|
2895 return NGX_OK;
|
|
|
2896 }
|
|
|
2897
|
|
|
2898
|
|
|
2899 #if (NGX_HTTP_GZIP)
|
|
|
2900
|
|
|
2901 static ngx_int_t
|
|
|
2902 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2903 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2904 {
|
|
|
2905 ngx_table_elt_t *ho;
|
|
|
2906
|
|
|
2907 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2908 if (ho == NULL) {
|
|
|
2909 return NGX_ERROR;
|
|
|
2910 }
|
|
|
2911
|
|
|
2912 *ho = *h;
|
|
|
2913
|
|
|
2914 r->headers_out.content_encoding = ho;
|
|
|
2915
|
|
|
2916 return NGX_OK;
|
|
|
2917 }
|
|
|
2918
|
|
|
2919 #endif
|
|
|
2920
|
|
|
2921
|
|
36
|
2922 static ngx_int_t
|
|
122
|
2923 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2924 {
|
|
260
|
2925 ngx_http_variable_t *var, *v;
|
|
28
|
2926
|
|
122
|
2927 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2928 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2929 if (var == NULL) {
|
|
|
2930 return NGX_ERROR;
|
|
|
2931 }
|
|
|
2932
|
|
186
|
2933 var->get_handler = v->get_handler;
|
|
122
|
2934 var->data = v->data;
|
|
|
2935 }
|
|
|
2936
|
|
28
|
2937 return NGX_OK;
|
|
|
2938 }
|
|
58
|
2939
|
|
|
2940
|
|
122
|
2941 static ngx_int_t
|
|
298
|
2942 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2943 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2944 {
|
|
|
2945 u_char *p;
|
|
|
2946 size_t len;
|
|
|
2947 ngx_uint_t i;
|
|
|
2948 ngx_http_upstream_state_t *state;
|
|
|
2949
|
|
|
2950 v->valid = 1;
|
|
340
|
2951 v->no_cacheable = 0;
|
|
298
|
2952 v->not_found = 0;
|
|
|
2953
|
|
|
2954 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2955 v->not_found = 1;
|
|
|
2956 return NGX_OK;
|
|
|
2957 }
|
|
|
2958
|
|
|
2959 len = 0;
|
|
|
2960 state = r->upstream_states->elts;
|
|
|
2961
|
|
|
2962 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2963 if (state[i].peer) {
|
|
|
2964 len += state[i].peer->len + 2;
|
|
|
2965
|
|
|
2966 } else {
|
|
|
2967 len += 3;
|
|
|
2968 }
|
|
|
2969 }
|
|
|
2970
|
|
382
|
2971 p = ngx_pnalloc(r->pool, len);
|
|
298
|
2972 if (p == NULL) {
|
|
|
2973 return NGX_ERROR;
|
|
|
2974 }
|
|
|
2975
|
|
|
2976 v->data = p;
|
|
|
2977
|
|
|
2978 i = 0;
|
|
|
2979
|
|
|
2980 for ( ;; ) {
|
|
|
2981 if (state[i].peer) {
|
|
|
2982 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2983 }
|
|
|
2984
|
|
|
2985 if (++i == r->upstream_states->nelts) {
|
|
|
2986 break;
|
|
|
2987 }
|
|
|
2988
|
|
|
2989 if (state[i].peer) {
|
|
|
2990 *p++ = ',';
|
|
|
2991 *p++ = ' ';
|
|
|
2992
|
|
|
2993 } else {
|
|
|
2994 *p++ = ' ';
|
|
|
2995 *p++ = ':';
|
|
|
2996 *p++ = ' ';
|
|
|
2997
|
|
|
2998 if (++i == r->upstream_states->nelts) {
|
|
|
2999 break;
|
|
|
3000 }
|
|
|
3001
|
|
|
3002 continue;
|
|
|
3003 }
|
|
|
3004 }
|
|
|
3005
|
|
|
3006 v->len = p - v->data;
|
|
|
3007
|
|
|
3008 return NGX_OK;
|
|
|
3009 }
|
|
|
3010
|
|
|
3011
|
|
|
3012 static ngx_int_t
|
|
122
|
3013 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3014 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3015 {
|
|
|
3016 u_char *p;
|
|
|
3017 size_t len;
|
|
|
3018 ngx_uint_t i;
|
|
|
3019 ngx_http_upstream_state_t *state;
|
|
|
3020
|
|
|
3021 v->valid = 1;
|
|
340
|
3022 v->no_cacheable = 0;
|
|
122
|
3023 v->not_found = 0;
|
|
|
3024
|
|
296
|
3025 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3026 v->not_found = 1;
|
|
|
3027 return NGX_OK;
|
|
|
3028 }
|
|
|
3029
|
|
296
|
3030 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3031
|
|
382
|
3032 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3033 if (p == NULL) {
|
|
|
3034 return NGX_ERROR;
|
|
|
3035 }
|
|
|
3036
|
|
|
3037 v->data = p;
|
|
|
3038
|
|
|
3039 i = 0;
|
|
296
|
3040 state = r->upstream_states->elts;
|
|
122
|
3041
|
|
|
3042 for ( ;; ) {
|
|
296
|
3043 if (state[i].status) {
|
|
|
3044 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3045
|
|
|
3046 } else {
|
|
296
|
3047 *p++ = '-';
|
|
122
|
3048 }
|
|
|
3049
|
|
296
|
3050 if (++i == r->upstream_states->nelts) {
|
|
122
|
3051 break;
|
|
|
3052 }
|
|
|
3053
|
|
296
|
3054 if (state[i].peer) {
|
|
|
3055 *p++ = ',';
|
|
|
3056 *p++ = ' ';
|
|
|
3057
|
|
|
3058 } else {
|
|
|
3059 *p++ = ' ';
|
|
|
3060 *p++ = ':';
|
|
|
3061 *p++ = ' ';
|
|
|
3062
|
|
|
3063 if (++i == r->upstream_states->nelts) {
|
|
|
3064 break;
|
|
|
3065 }
|
|
|
3066
|
|
|
3067 continue;
|
|
|
3068 }
|
|
122
|
3069 }
|
|
|
3070
|
|
|
3071 v->len = p - v->data;
|
|
|
3072
|
|
|
3073 return NGX_OK;
|
|
|
3074 }
|
|
|
3075
|
|
|
3076
|
|
|
3077 static ngx_int_t
|
|
|
3078 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3079 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3080 {
|
|
|
3081 u_char *p;
|
|
|
3082 size_t len;
|
|
|
3083 ngx_uint_t i;
|
|
262
|
3084 ngx_msec_int_t ms;
|
|
122
|
3085 ngx_http_upstream_state_t *state;
|
|
|
3086
|
|
|
3087 v->valid = 1;
|
|
340
|
3088 v->no_cacheable = 0;
|
|
122
|
3089 v->not_found = 0;
|
|
|
3090
|
|
296
|
3091 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3092 v->not_found = 1;
|
|
|
3093 return NGX_OK;
|
|
|
3094 }
|
|
|
3095
|
|
296
|
3096 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3097
|
|
382
|
3098 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3099 if (p == NULL) {
|
|
|
3100 return NGX_ERROR;
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 v->data = p;
|
|
|
3104
|
|
|
3105 i = 0;
|
|
296
|
3106 state = r->upstream_states->elts;
|
|
122
|
3107
|
|
|
3108 for ( ;; ) {
|
|
296
|
3109 if (state[i].status) {
|
|
346
|
3110 ms = (ngx_msec_int_t)
|
|
|
3111 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3112 ms = (ms >= 0) ? ms : 0;
|
|
|
3113 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3114
|
|
|
3115 } else {
|
|
|
3116 *p++ = '-';
|
|
122
|
3117 }
|
|
|
3118
|
|
296
|
3119 if (++i == r->upstream_states->nelts) {
|
|
122
|
3120 break;
|
|
|
3121 }
|
|
|
3122
|
|
296
|
3123 if (state[i].peer) {
|
|
|
3124 *p++ = ',';
|
|
|
3125 *p++ = ' ';
|
|
|
3126
|
|
|
3127 } else {
|
|
|
3128 *p++ = ' ';
|
|
|
3129 *p++ = ':';
|
|
|
3130 *p++ = ' ';
|
|
|
3131
|
|
|
3132 if (++i == r->upstream_states->nelts) {
|
|
|
3133 break;
|
|
|
3134 }
|
|
|
3135
|
|
|
3136 continue;
|
|
|
3137 }
|
|
122
|
3138 }
|
|
|
3139
|
|
|
3140 v->len = p - v->data;
|
|
|
3141
|
|
|
3142 return NGX_OK;
|
|
|
3143 }
|
|
|
3144
|
|
|
3145
|
|
430
|
3146 static ngx_int_t
|
|
|
3147 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3148 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3149 {
|
|
|
3150 u_char *p;
|
|
|
3151 size_t len;
|
|
|
3152 ngx_uint_t i;
|
|
|
3153 ngx_http_upstream_state_t *state;
|
|
|
3154
|
|
|
3155 v->valid = 1;
|
|
|
3156 v->no_cacheable = 0;
|
|
|
3157 v->not_found = 0;
|
|
|
3158
|
|
|
3159 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3160 v->not_found = 1;
|
|
|
3161 return NGX_OK;
|
|
|
3162 }
|
|
|
3163
|
|
|
3164 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3165
|
|
|
3166 p = ngx_pnalloc(r->pool, len);
|
|
|
3167 if (p == NULL) {
|
|
|
3168 return NGX_ERROR;
|
|
|
3169 }
|
|
|
3170
|
|
|
3171 v->data = p;
|
|
|
3172
|
|
|
3173 i = 0;
|
|
|
3174 state = r->upstream_states->elts;
|
|
|
3175
|
|
|
3176 for ( ;; ) {
|
|
|
3177 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3178
|
|
|
3179 if (++i == r->upstream_states->nelts) {
|
|
|
3180 break;
|
|
|
3181 }
|
|
|
3182
|
|
|
3183 if (state[i].peer) {
|
|
|
3184 *p++ = ',';
|
|
|
3185 *p++ = ' ';
|
|
|
3186
|
|
|
3187 } else {
|
|
|
3188 *p++ = ' ';
|
|
|
3189 *p++ = ':';
|
|
|
3190 *p++ = ' ';
|
|
|
3191
|
|
|
3192 if (++i == r->upstream_states->nelts) {
|
|
|
3193 break;
|
|
|
3194 }
|
|
|
3195
|
|
|
3196 continue;
|
|
|
3197 }
|
|
|
3198 }
|
|
|
3199
|
|
|
3200 v->len = p - v->data;
|
|
|
3201
|
|
|
3202 return NGX_OK;
|
|
|
3203 }
|
|
|
3204
|
|
|
3205
|
|
296
|
3206 ngx_int_t
|
|
|
3207 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3208 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3209 {
|
|
|
3210 if (r->upstream == NULL) {
|
|
|
3211 v->not_found = 1;
|
|
|
3212 return NGX_OK;
|
|
|
3213 }
|
|
|
3214
|
|
|
3215 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3216 &r->upstream->headers_in.headers.part,
|
|
|
3217 sizeof("upstream_http_") - 1);
|
|
|
3218 }
|
|
|
3219
|
|
|
3220
|
|
200
|
3221 static char *
|
|
|
3222 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3223 {
|
|
260
|
3224 char *rv;
|
|
|
3225 void *mconf;
|
|
|
3226 ngx_str_t *value;
|
|
|
3227 ngx_url_t u;
|
|
|
3228 ngx_uint_t m;
|
|
|
3229 ngx_conf_t pcf;
|
|
|
3230 ngx_http_module_t *module;
|
|
|
3231 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3232 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3233
|
|
|
3234 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3235
|
|
|
3236 value = cf->args->elts;
|
|
|
3237 u.host = value[1];
|
|
|
3238 u.no_resolve = 1;
|
|
|
3239
|
|
|
3240 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3241 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3242 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3243 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3244 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3245 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3246 if (uscf == NULL) {
|
|
|
3247 return NGX_CONF_ERROR;
|
|
|
3248 }
|
|
|
3249
|
|
200
|
3250
|
|
|
3251 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3252 if (ctx == NULL) {
|
|
|
3253 return NGX_CONF_ERROR;
|
|
|
3254 }
|
|
|
3255
|
|
260
|
3256 http_ctx = cf->ctx;
|
|
|
3257 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3258
|
|
|
3259 /* the upstream{}'s srv_conf */
|
|
|
3260
|
|
|
3261 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3262 if (ctx->srv_conf == NULL) {
|
|
|
3263 return NGX_CONF_ERROR;
|
|
|
3264 }
|
|
|
3265
|
|
|
3266 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3267
|
|
260
|
3268 uscf->srv_conf = ctx->srv_conf;
|
|
|
3269
|
|
200
|
3270
|
|
|
3271 /* the upstream{}'s loc_conf */
|
|
|
3272
|
|
|
3273 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3274 if (ctx->loc_conf == NULL) {
|
|
|
3275 return NGX_CONF_ERROR;
|
|
|
3276 }
|
|
|
3277
|
|
|
3278 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3279 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3280 continue;
|
|
|
3281 }
|
|
|
3282
|
|
|
3283 module = ngx_modules[m]->ctx;
|
|
|
3284
|
|
260
|
3285 if (module->create_srv_conf) {
|
|
|
3286 mconf = module->create_srv_conf(cf);
|
|
|
3287 if (mconf == NULL) {
|
|
|
3288 return NGX_CONF_ERROR;
|
|
|
3289 }
|
|
|
3290
|
|
|
3291 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3292 }
|
|
|
3293
|
|
200
|
3294 if (module->create_loc_conf) {
|
|
|
3295 mconf = module->create_loc_conf(cf);
|
|
|
3296 if (mconf == NULL) {
|
|
|
3297 return NGX_CONF_ERROR;
|
|
|
3298 }
|
|
|
3299
|
|
|
3300 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3301 }
|
|
|
3302 }
|
|
|
3303
|
|
|
3304
|
|
|
3305 /* parse inside upstream{} */
|
|
|
3306
|
|
|
3307 pcf = *cf;
|
|
|
3308 cf->ctx = ctx;
|
|
|
3309 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3310
|
|
|
3311 rv = ngx_conf_parse(cf, NULL);
|
|
|
3312
|
|
|
3313 *cf = pcf;
|
|
|
3314
|
|
|
3315 if (rv != NGX_CONF_OK) {
|
|
|
3316 return rv;
|
|
|
3317 }
|
|
|
3318
|
|
|
3319 if (uscf->servers == NULL) {
|
|
|
3320 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3321 "no servers are inside upstream");
|
|
|
3322 return NGX_CONF_ERROR;
|
|
|
3323 }
|
|
|
3324
|
|
|
3325 return rv;
|
|
|
3326 }
|
|
|
3327
|
|
|
3328
|
|
|
3329 static char *
|
|
|
3330 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3331 {
|
|
|
3332 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3333
|
|
260
|
3334 time_t fail_timeout;
|
|
|
3335 ngx_str_t *value, s;
|
|
|
3336 ngx_url_t u;
|
|
|
3337 ngx_int_t weight, max_fails;
|
|
|
3338 ngx_uint_t i;
|
|
|
3339 ngx_http_upstream_server_t *us;
|
|
200
|
3340
|
|
|
3341 if (uscf->servers == NULL) {
|
|
260
|
3342 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3343 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3344 if (uscf->servers == NULL) {
|
|
|
3345 return NGX_CONF_ERROR;
|
|
|
3346 }
|
|
|
3347 }
|
|
|
3348
|
|
260
|
3349 us = ngx_array_push(uscf->servers);
|
|
|
3350 if (us == NULL) {
|
|
200
|
3351 return NGX_CONF_ERROR;
|
|
|
3352 }
|
|
|
3353
|
|
260
|
3354 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3355
|
|
200
|
3356 value = cf->args->elts;
|
|
|
3357
|
|
|
3358 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3359
|
|
|
3360 u.url = value[1];
|
|
266
|
3361 u.default_port = 80;
|
|
200
|
3362
|
|
340
|
3363 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3364 if (u.err) {
|
|
|
3365 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3366 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3367 }
|
|
|
3368
|
|
|
3369 return NGX_CONF_ERROR;
|
|
|
3370 }
|
|
|
3371
|
|
212
|
3372 weight = 1;
|
|
260
|
3373 max_fails = 1;
|
|
|
3374 fail_timeout = 10;
|
|
|
3375
|
|
|
3376 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3377
|
|
|
3378 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3379
|
|
|
3380 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3381 goto invalid;
|
|
|
3382 }
|
|
|
3383
|
|
|
3384 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3385
|
|
|
3386 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3387 goto invalid;
|
|
|
3388 }
|
|
|
3389
|
|
260
|
3390 continue;
|
|
|
3391 }
|
|
|
3392
|
|
|
3393 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3394
|
|
|
3395 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3396 goto invalid;
|
|
|
3397 }
|
|
|
3398
|
|
|
3399 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3400
|
|
|
3401 if (max_fails == NGX_ERROR) {
|
|
|
3402 goto invalid;
|
|
|
3403 }
|
|
|
3404
|
|
|
3405 continue;
|
|
212
|
3406 }
|
|
260
|
3407
|
|
|
3408 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3409
|
|
|
3410 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3411 goto invalid;
|
|
|
3412 }
|
|
|
3413
|
|
|
3414 s.len = value[i].len - 13;
|
|
|
3415 s.data = &value[i].data[13];
|
|
|
3416
|
|
|
3417 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3418
|
|
372
|
3419 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3420 goto invalid;
|
|
|
3421 }
|
|
|
3422
|
|
|
3423 continue;
|
|
|
3424 }
|
|
|
3425
|
|
326
|
3426 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3427
|
|
|
3428 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3429 goto invalid;
|
|
|
3430 }
|
|
|
3431
|
|
|
3432 us->backup = 1;
|
|
|
3433
|
|
|
3434 continue;
|
|
|
3435 }
|
|
|
3436
|
|
260
|
3437 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3438
|
|
|
3439 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3440 goto invalid;
|
|
|
3441 }
|
|
|
3442
|
|
|
3443 us->down = 1;
|
|
|
3444
|
|
|
3445 continue;
|
|
|
3446 }
|
|
|
3447
|
|
|
3448 goto invalid;
|
|
212
|
3449 }
|
|
|
3450
|
|
260
|
3451 us->addrs = u.addrs;
|
|
|
3452 us->naddrs = u.naddrs;
|
|
|
3453 us->weight = weight;
|
|
|
3454 us->max_fails = max_fails;
|
|
|
3455 us->fail_timeout = fail_timeout;
|
|
200
|
3456
|
|
|
3457 return NGX_CONF_OK;
|
|
212
|
3458
|
|
|
3459 invalid:
|
|
|
3460
|
|
260
|
3461 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3462 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3463
|
|
|
3464 return NGX_CONF_ERROR;
|
|
200
|
3465 }
|
|
|
3466
|
|
|
3467
|
|
|
3468 ngx_http_upstream_srv_conf_t *
|
|
260
|
3469 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3470 {
|
|
|
3471 ngx_uint_t i;
|
|
260
|
3472 ngx_http_upstream_server_t *us;
|
|
200
|
3473 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3474 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3475
|
|
260
|
3476 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3477
|
|
340
|
3478 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3479 if (u->err) {
|
|
|
3480 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3481 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3482 }
|
|
|
3483
|
|
|
3484 return NULL;
|
|
|
3485 }
|
|
|
3486 }
|
|
|
3487
|
|
|
3488 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3489
|
|
|
3490 uscfp = umcf->upstreams.elts;
|
|
|
3491
|
|
|
3492 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3493
|
|
|
3494 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3495 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3496 != 0)
|
|
|
3497 {
|
|
200
|
3498 continue;
|
|
|
3499 }
|
|
|
3500
|
|
260
|
3501 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3502 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3503 {
|
|
260
|
3504 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3505 "duplicate upstream \"%V\"", &u->host);
|
|
|
3506 return NULL;
|
|
200
|
3507 }
|
|
260
|
3508
|
|
266
|
3509 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3510 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3511 "upstream \"%V\" may not have port %d",
|
|
|
3512 &u->host, u->port);
|
|
|
3513 return NULL;
|
|
|
3514 }
|
|
|
3515
|
|
|
3516 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3517 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3518 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3519 &u->host, uscfp[i]->port,
|
|
336
|
3520 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3521 return NULL;
|
|
|
3522 }
|
|
|
3523
|
|
|
3524 if (uscfp[i]->port != u->port) {
|
|
|
3525 continue;
|
|
260
|
3526 }
|
|
|
3527
|
|
324
|
3528 if (uscfp[i]->default_port && u->default_port
|
|
|
3529 && uscfp[i]->default_port != u->default_port)
|
|
|
3530 {
|
|
|
3531 continue;
|
|
|
3532 }
|
|
|
3533
|
|
260
|
3534 return uscfp[i];
|
|
200
|
3535 }
|
|
|
3536
|
|
|
3537 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3538 if (uscf == NULL) {
|
|
|
3539 return NULL;
|
|
|
3540 }
|
|
|
3541
|
|
260
|
3542 uscf->flags = flags;
|
|
200
|
3543 uscf->host = u->host;
|
|
336
|
3544 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3545 uscf->line = cf->conf_file->line;
|
|
266
|
3546 uscf->port = u->port;
|
|
|
3547 uscf->default_port = u->default_port;
|
|
260
|
3548
|
|
|
3549 if (u->naddrs == 1) {
|
|
|
3550 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3551 sizeof(ngx_http_upstream_server_t));
|
|
|
3552 if (uscf->servers == NULL) {
|
|
|
3553 return NGX_CONF_ERROR;
|
|
|
3554 }
|
|
|
3555
|
|
|
3556 us = ngx_array_push(uscf->servers);
|
|
|
3557 if (us == NULL) {
|
|
|
3558 return NGX_CONF_ERROR;
|
|
|
3559 }
|
|
|
3560
|
|
|
3561 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3562
|
|
|
3563 us->addrs = u->addrs;
|
|
|
3564 us->naddrs = u->naddrs;
|
|
|
3565 }
|
|
200
|
3566
|
|
|
3567 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3568 if (uscfp == NULL) {
|
|
|
3569 return NULL;
|
|
|
3570 }
|
|
|
3571
|
|
|
3572 *uscfp = uscf;
|
|
|
3573
|
|
|
3574 return uscf;
|
|
|
3575 }
|
|
|
3576
|
|
|
3577
|
|
356
|
3578 ngx_int_t
|
|
|
3579 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3580 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3581 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3582 {
|
|
|
3583 ngx_str_t *h;
|
|
|
3584 ngx_uint_t i, j;
|
|
|
3585 ngx_array_t hide_headers;
|
|
|
3586 ngx_hash_key_t *hk;
|
|
|
3587
|
|
|
3588 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3589 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3590 {
|
|
|
3591 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3592
|
|
|
3593 if (conf->hide_headers_hash.buckets) {
|
|
|
3594 return NGX_OK;
|
|
|
3595 }
|
|
|
3596
|
|
|
3597 conf->hide_headers = prev->hide_headers;
|
|
|
3598 conf->pass_headers = prev->pass_headers;
|
|
|
3599
|
|
|
3600 } else {
|
|
|
3601 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3602 conf->hide_headers = prev->hide_headers;
|
|
|
3603 }
|
|
|
3604
|
|
|
3605 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3606 conf->pass_headers = prev->pass_headers;
|
|
|
3607 }
|
|
|
3608 }
|
|
|
3609
|
|
|
3610 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3611 != NGX_OK)
|
|
|
3612 {
|
|
|
3613 return NGX_ERROR;
|
|
|
3614 }
|
|
|
3615
|
|
|
3616 for (h = default_hide_headers; h->len; h++) {
|
|
|
3617 hk = ngx_array_push(&hide_headers);
|
|
|
3618 if (hk == NULL) {
|
|
|
3619 return NGX_ERROR;
|
|
|
3620 }
|
|
|
3621
|
|
|
3622 hk->key = *h;
|
|
|
3623 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3624 hk->value = (void *) 1;
|
|
|
3625 }
|
|
|
3626
|
|
|
3627 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3628
|
|
|
3629 h = conf->hide_headers->elts;
|
|
|
3630
|
|
|
3631 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3632
|
|
|
3633 hk = hide_headers.elts;
|
|
|
3634
|
|
|
3635 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3636 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3637 goto exist;
|
|
|
3638 }
|
|
|
3639 }
|
|
|
3640
|
|
|
3641 hk = ngx_array_push(&hide_headers);
|
|
|
3642 if (hk == NULL) {
|
|
|
3643 return NGX_ERROR;
|
|
|
3644 }
|
|
|
3645
|
|
|
3646 hk->key = h[i];
|
|
|
3647 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3648 hk->value = (void *) 1;
|
|
|
3649
|
|
|
3650 exist:
|
|
|
3651
|
|
|
3652 continue;
|
|
|
3653 }
|
|
|
3654 }
|
|
|
3655
|
|
|
3656 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3657
|
|
|
3658 h = conf->pass_headers->elts;
|
|
|
3659 hk = hide_headers.elts;
|
|
|
3660
|
|
|
3661 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3662 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3663
|
|
|
3664 if (hk[j].key.data == NULL) {
|
|
|
3665 continue;
|
|
|
3666 }
|
|
|
3667
|
|
|
3668 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3669 hk[j].key.data = NULL;
|
|
|
3670 break;
|
|
|
3671 }
|
|
|
3672 }
|
|
|
3673 }
|
|
|
3674 }
|
|
|
3675
|
|
|
3676 hash->hash = &conf->hide_headers_hash;
|
|
|
3677 hash->key = ngx_hash_key_lc;
|
|
|
3678 hash->pool = cf->pool;
|
|
|
3679 hash->temp_pool = NULL;
|
|
|
3680
|
|
|
3681 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3682 }
|
|
|
3683
|
|
|
3684
|
|
58
|
3685 static void *
|
|
|
3686 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3687 {
|
|
|
3688 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3689
|
|
|
3690 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3691 if (umcf == NULL) {
|
|
|
3692 return NULL;
|
|
|
3693 }
|
|
|
3694
|
|
200
|
3695 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3696 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3697 != NGX_OK)
|
|
|
3698 {
|
|
|
3699 return NGX_CONF_ERROR;
|
|
|
3700 }
|
|
|
3701
|
|
58
|
3702 return umcf;
|
|
|
3703 }
|
|
|
3704
|
|
|
3705
|
|
|
3706 static char *
|
|
200
|
3707 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3708 {
|
|
|
3709 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3710
|
|
200
|
3711 ngx_uint_t i;
|
|
|
3712 ngx_array_t headers_in;
|
|
|
3713 ngx_hash_key_t *hk;
|
|
|
3714 ngx_hash_init_t hash;
|
|
260
|
3715 ngx_http_upstream_init_pt init;
|
|
200
|
3716 ngx_http_upstream_header_t *header;
|
|
|
3717 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3718
|
|
|
3719 uscfp = umcf->upstreams.elts;
|
|
|
3720
|
|
|
3721 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3722
|
|
|
3723 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3724 ngx_http_upstream_init_round_robin;
|
|
|
3725
|
|
|
3726 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3727 return NGX_CONF_ERROR;
|
|
|
3728 }
|
|
|
3729 }
|
|
198
|
3730
|
|
212
|
3731
|
|
260
|
3732 /* upstream_headers_in_hash */
|
|
|
3733
|
|
198
|
3734 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3735 != NGX_OK)
|
|
58
|
3736 {
|
|
|
3737 return NGX_CONF_ERROR;
|
|
|
3738 }
|
|
|
3739
|
|
198
|
3740 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3741 hk = ngx_array_push(&headers_in);
|
|
|
3742 if (hk == NULL) {
|
|
|
3743 return NGX_CONF_ERROR;
|
|
|
3744 }
|
|
|
3745
|
|
|
3746 hk->key = header->name;
|
|
|
3747 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3748 hk->value = header;
|
|
|
3749 }
|
|
|
3750
|
|
|
3751 hash.hash = &umcf->headers_in_hash;
|
|
|
3752 hash.key = ngx_hash_key_lc;
|
|
|
3753 hash.max_size = 512;
|
|
244
|
3754 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3755 hash.name = "upstream_headers_in_hash";
|
|
|
3756 hash.pool = cf->pool;
|
|
|
3757 hash.temp_pool = NULL;
|
|
|
3758
|
|
|
3759 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3760 return NGX_CONF_ERROR;
|
|
|
3761 }
|
|
58
|
3762
|
|
|
3763 return NGX_CONF_OK;
|
|
|
3764 }
|
