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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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348
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12 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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28
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23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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294
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25 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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26 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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27 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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28 ngx_http_upstream_t *u);
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130
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29 static void
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30 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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31 static void ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev);
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32 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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33 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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34 ssize_t bytes);
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58
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35 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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28
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36 static void ngx_http_upstream_process_body(ngx_event_t *ev);
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318
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37 static void ngx_http_upstream_store(ngx_http_request_t *r,
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38 ngx_http_upstream_t *u);
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28
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39 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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40 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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41 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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42 static void ngx_http_upstream_cleanup(void *data);
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28
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43 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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44 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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45
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58
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46 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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47 ngx_table_elt_t *h, ngx_uint_t offset);
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48 static ngx_int_t
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49 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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50 ngx_table_elt_t *h, ngx_uint_t offset);
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51 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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52 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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53 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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54 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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55 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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56 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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57 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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59 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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61 static ngx_int_t
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62 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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63 ngx_table_elt_t *h, ngx_uint_t offset);
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64 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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65 ngx_table_elt_t *h, ngx_uint_t offset);
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66 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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67 ngx_table_elt_t *h, ngx_uint_t offset);
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68 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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69 ngx_table_elt_t *h, ngx_uint_t offset);
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70 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 #if (NGX_HTTP_GZIP)
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73 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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75 #endif
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76
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122
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77 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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78 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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79 ngx_http_variable_value_t *v, uintptr_t data);
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122
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80 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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81 ngx_http_variable_value_t *v, uintptr_t data);
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82 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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83 ngx_http_variable_value_t *v, uintptr_t data);
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84
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200
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85 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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86 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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87 void *conf);
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88
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58
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89 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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90 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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91
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126
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92 #if (NGX_HTTP_SSL)
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140
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93 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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94 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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95 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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96 #endif
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97
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58
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98
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99 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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100
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101 { ngx_string("Status"),
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102 ngx_http_upstream_process_header_line,
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103 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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104 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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105
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106 { ngx_string("Content-Type"),
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107 ngx_http_upstream_process_header_line,
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108 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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109 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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110
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111 { ngx_string("Content-Length"),
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112 ngx_http_upstream_process_header_line,
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113 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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114 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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115
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116 { ngx_string("Date"),
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117 ngx_http_upstream_process_header_line,
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118 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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119 ngx_http_upstream_copy_header_line,
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120 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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121
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318
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122 { ngx_string("Last-Modified"),
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123 ngx_http_upstream_process_header_line,
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124 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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125 ngx_http_upstream_copy_header_line,
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126 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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127
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58
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128 { ngx_string("Server"),
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129 ngx_http_upstream_process_header_line,
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130 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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131 ngx_http_upstream_copy_header_line,
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132 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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133
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78
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134 { ngx_string("WWW-Authenticate"),
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135 ngx_http_upstream_process_header_line,
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136 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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137 ngx_http_upstream_copy_header_line, 0, 0 },
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138
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58
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139 { ngx_string("Location"),
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140 ngx_http_upstream_ignore_header_line, 0,
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64
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141 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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142
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143 { ngx_string("Refresh"),
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144 ngx_http_upstream_ignore_header_line, 0,
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64
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145 ngx_http_upstream_rewrite_refresh, 0, 0 },
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146
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147 { ngx_string("Set-Cookie"),
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148 ngx_http_upstream_ignore_header_line, 0,
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80
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149 ngx_http_upstream_copy_header_line, 0, 1 },
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150
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151 { ngx_string("Content-Disposition"),
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152 ngx_http_upstream_ignore_header_line, 0,
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153 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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154
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155 { ngx_string("Cache-Control"),
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156 ngx_http_upstream_process_multi_header_lines,
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157 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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158 ngx_http_upstream_copy_multi_header_lines,
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64
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159 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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160
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122
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161 { ngx_string("Expires"),
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162 ngx_http_upstream_process_header_line,
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163 offsetof(ngx_http_upstream_headers_in_t, expires),
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164 ngx_http_upstream_copy_header_line,
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165 offsetof(ngx_http_headers_out_t, expires), 1 },
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166
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126
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167 { ngx_string("Accept-Ranges"),
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168 ngx_http_upstream_process_header_line,
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169 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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170 ngx_http_upstream_copy_header_line,
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171 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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172
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58
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173 { ngx_string("Connection"),
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174 ngx_http_upstream_ignore_header_line, 0,
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64
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175 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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176
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190
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177 { ngx_string("Keep-Alive"),
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178 ngx_http_upstream_ignore_header_line, 0,
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179 ngx_http_upstream_ignore_header_line, 0, 0 },
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180
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58
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181 { ngx_string("X-Powered-By"),
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182 ngx_http_upstream_ignore_header_line, 0,
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198
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183 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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184
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185 { ngx_string("X-Accel-Expires"),
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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188 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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189
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190 { ngx_string("X-Accel-Redirect"),
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191 ngx_http_upstream_process_header_line,
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192 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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193 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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194
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76
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195 { ngx_string("X-Accel-Limit-Rate"),
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196 ngx_http_upstream_process_limit_rate, 0,
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197 ngx_http_upstream_ignore_header_line, 0, 0 },
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198
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198
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199 { ngx_string("X-Accel-Buffering"),
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200 ngx_http_upstream_process_buffering, 0,
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201 ngx_http_upstream_ignore_header_line, 0, 0 },
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202
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206
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203 { ngx_string("X-Accel-Charset"),
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204 ngx_http_upstream_process_charset, 0,
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205 ngx_http_upstream_ignore_header_line, 0, 0 },
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206
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58
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207 #if (NGX_HTTP_GZIP)
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208 { ngx_string("Content-Encoding"),
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209 ngx_http_upstream_process_header_line,
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210 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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211 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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212 #endif
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213
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64
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214 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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215 };
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28
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216
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217
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200
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218 static ngx_command_t ngx_http_upstream_commands[] = {
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219
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220 { ngx_string("upstream"),
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221 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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222 ngx_http_upstream,
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223 0,
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224 0,
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225 NULL },
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226
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227 { ngx_string("server"),
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260
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228 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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229 ngx_http_upstream_server,
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230 NGX_HTTP_SRV_CONF_OFFSET,
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231 0,
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232 NULL },
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233
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234 ngx_null_command
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235 };
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236
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237
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238 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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239 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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240 NULL, /* postconfiguration */
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241
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242 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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243 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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244
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245 NULL, /* create server configuration */
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246 NULL, /* merge server configuration */
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247
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248 NULL, /* create location configuration */
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249 NULL /* merge location configuration */
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250 };
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126
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251
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28
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252
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253 ngx_module_t ngx_http_upstream_module = {
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58
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254 NGX_MODULE_V1,
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28
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255 &ngx_http_upstream_module_ctx, /* module context */
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200
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256 ngx_http_upstream_commands, /* module directives */
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28
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257 NGX_HTTP_MODULE, /* module type */
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90
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258 NULL, /* init master */
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28
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259 NULL, /* init module */
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90
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260 NULL, /* init process */
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261 NULL, /* init thread */
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262 NULL, /* exit thread */
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263 NULL, /* exit process */
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264 NULL, /* exit master */
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265 NGX_MODULE_V1_PADDING
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28
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266 };
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267
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268
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122
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269 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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270
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298
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271 { ngx_string("upstream_addr"), NULL,
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272 ngx_http_upstream_addr_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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273
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186
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274 { ngx_string("upstream_status"), NULL,
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132
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275 ngx_http_upstream_status_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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276
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186
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277 { ngx_string("upstream_response_time"), NULL,
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132
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278 ngx_http_upstream_response_time_variable, 0, NGX_HTTP_VAR_NOHASH, 0 },
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122
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279
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186
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280 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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281 };
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282
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283
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36
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284 void
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285 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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286 {
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348
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287 ngx_str_t *host;
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288 ngx_uint_t i;
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289 ngx_connection_t *c;
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290 ngx_resolver_ctx_t *ctx, temp;
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291 ngx_http_cleanup_t *cln;
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292 ngx_http_upstream_t *u;
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293 ngx_http_core_loc_conf_t *clcf;
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294 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
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295 ngx_http_upstream_main_conf_t *umcf;
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28
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296
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297 c = r->connection;
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298
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299 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
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300 "http init upstream, client timer: %d", c->read->timer_set);
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301
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302 if (c->read->timer_set) {
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303 ngx_del_timer(c->read);
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304 }
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305
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178
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306 u = r->upstream;
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307
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308 if (!r->post_action && !u->conf->ignore_client_abort) {
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164
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309 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
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310 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
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311 }
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126
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312
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28
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313 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
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314
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315 if (!c->write->active) {
|
|
80
|
316 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
317 == NGX_ERROR)
|
|
28
|
318 {
|
|
|
319 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
320 return;
|
|
|
321 }
|
|
|
322 }
|
|
|
323 }
|
|
|
324
|
|
86
|
325 if (r->request_body) {
|
|
|
326 u->request_bufs = r->request_body->bufs;
|
|
|
327 }
|
|
58
|
328
|
|
86
|
329 if (u->create_request(r) != NGX_OK) {
|
|
28
|
330 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
331 return;
|
|
|
332 }
|
|
|
333
|
|
58
|
334 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
335
|
|
348
|
336 u->output.sendfile = c->sendfile;
|
|
28
|
337 u->output.pool = r->pool;
|
|
|
338 u->output.bufs.num = 1;
|
|
58
|
339 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
340 u->output.output_filter = ngx_chain_writer;
|
|
|
341 u->output.filter_ctx = &u->writer;
|
|
|
342
|
|
|
343 u->writer.pool = r->pool;
|
|
|
344
|
|
296
|
345 if (r->upstream_states == NULL) {
|
|
|
346
|
|
|
347 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
348 sizeof(ngx_http_upstream_state_t));
|
|
|
349 if (r->upstream_states == NULL) {
|
|
|
350 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
351 return;
|
|
|
352 }
|
|
|
353
|
|
|
354 } else {
|
|
|
355
|
|
|
356 u->state = ngx_array_push(r->upstream_states);
|
|
|
357 if (u->state == NULL) {
|
|
|
358 ngx_http_upstream_finalize_request(r, u,
|
|
|
359 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
360 return;
|
|
|
361 }
|
|
|
362
|
|
|
363 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
364 }
|
|
|
365
|
|
142
|
366 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
367 if (cln == NULL) {
|
|
|
368 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
369 return;
|
|
|
370 }
|
|
|
371
|
|
|
372 cln->handler = ngx_http_upstream_cleanup;
|
|
|
373 cln->data = r;
|
|
|
374 u->cleanup = &cln->handler;
|
|
|
375
|
|
320
|
376 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
377
|
|
348
|
378 if (u->resolved == NULL) {
|
|
|
379
|
|
|
380 uscf = u->conf->upstream;
|
|
|
381
|
|
|
382 } else {
|
|
|
383
|
|
356
|
384 host = &u->resolved->host;
|
|
348
|
385
|
|
|
386 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
387
|
|
|
388 uscfp = umcf->upstreams.elts;
|
|
|
389
|
|
|
390 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
391
|
|
|
392 uscf = uscfp[i];
|
|
|
393
|
|
|
394 if (uscf->host.len == host->len
|
|
|
395 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
396 {
|
|
|
397 goto found;
|
|
|
398 }
|
|
|
399 }
|
|
|
400
|
|
|
401 temp.name = *host;
|
|
|
402
|
|
|
403 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
404 if (ctx == NULL) {
|
|
|
405 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
406 return;
|
|
|
407 }
|
|
|
408
|
|
354
|
409 if (ctx == NGX_NO_RESOLVER) {
|
|
|
410 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
411 "no resolver defined to resolve %V", host);
|
|
|
412
|
|
|
413 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
414 return;
|
|
|
415 }
|
|
|
416
|
|
348
|
417 ctx->name = *host;
|
|
|
418 ctx->type = NGX_RESOLVE_A;
|
|
|
419 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
420 ctx->data = r;
|
|
|
421 ctx->timeout = clcf->resolver_timeout;
|
|
|
422
|
|
|
423 u->resolved->ctx = ctx;
|
|
|
424
|
|
|
425 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
|
426 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
427 return;
|
|
|
428 }
|
|
|
429
|
|
|
430 return;
|
|
|
431 }
|
|
|
432
|
|
|
433 found:
|
|
|
434
|
|
|
435 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
436 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
437 return;
|
|
|
438 }
|
|
|
439
|
|
28
|
440 ngx_http_upstream_connect(r, u);
|
|
|
441 }
|
|
|
442
|
|
|
443
|
|
36
|
444 static void
|
|
348
|
445 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
446 {
|
|
|
447 ngx_http_request_t *r;
|
|
|
448 ngx_http_upstream_resolved_t *ur;
|
|
|
449
|
|
|
450 r = ctx->data;
|
|
|
451
|
|
|
452 r->upstream->resolved->ctx = NULL;
|
|
|
453
|
|
|
454 if (ctx->state) {
|
|
|
455 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
456 "%V could not be resolved (%i: %s)",
|
|
|
457 &ctx->name, ctx->state,
|
|
|
458 ngx_resolver_strerror(ctx->state));
|
|
|
459
|
|
|
460 ngx_resolve_name_done(ctx);
|
|
|
461 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
462 return;
|
|
|
463 }
|
|
|
464
|
|
|
465 ur = r->upstream->resolved;
|
|
|
466 ur->naddrs = ctx->naddrs;
|
|
|
467 ur->addrs = ctx->addrs;
|
|
|
468
|
|
|
469 #if (NGX_DEBUG)
|
|
|
470 {
|
|
|
471 in_addr_t addr;
|
|
|
472 ngx_uint_t i;
|
|
|
473
|
|
|
474 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
475 addr = ntohl(ur->addrs[i]);
|
|
|
476
|
|
|
477 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
478 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
479 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
480 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
481 }
|
|
|
482 }
|
|
|
483 #endif
|
|
|
484
|
|
|
485 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
486 ngx_resolve_name_done(ctx);
|
|
|
487 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
488 return;
|
|
|
489 }
|
|
|
490
|
|
|
491 ngx_resolve_name_done(ctx);
|
|
|
492
|
|
|
493 ngx_http_upstream_connect(r, r->upstream);
|
|
|
494 }
|
|
|
495
|
|
|
496
|
|
|
497 static void
|
|
58
|
498 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
499 {
|
|
|
500 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
501 }
|
|
|
502
|
|
|
503
|
|
|
504 static void
|
|
|
505 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
506 {
|
|
|
507 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
508 }
|
|
|
509
|
|
|
510
|
|
|
511 static void
|
|
|
512 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
513 ngx_event_t *ev)
|
|
28
|
514 {
|
|
|
515 int n;
|
|
|
516 char buf[1];
|
|
126
|
517 ngx_err_t err;
|
|
28
|
518 ngx_connection_t *c;
|
|
|
519 ngx_http_upstream_t *u;
|
|
|
520
|
|
76
|
521 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
522 "http upstream check client, write event:%d, \"%V\"",
|
|
|
523 ev->write, &r->uri);
|
|
28
|
524
|
|
58
|
525 c = r->connection;
|
|
32
|
526 u = r->upstream;
|
|
|
527
|
|
132
|
528 if (c->error) {
|
|
76
|
529 ngx_http_upstream_finalize_request(r, u,
|
|
|
530 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
531 return;
|
|
|
532 }
|
|
|
533
|
|
32
|
534 if (u->peer.connection == NULL) {
|
|
|
535 return;
|
|
|
536 }
|
|
|
537
|
|
28
|
538 #if (NGX_HAVE_KQUEUE)
|
|
|
539
|
|
|
540 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
541
|
|
|
542 if (!ev->pending_eof) {
|
|
|
543 return;
|
|
|
544 }
|
|
|
545
|
|
|
546 ev->eof = 1;
|
|
132
|
547 c->error = 1;
|
|
28
|
548
|
|
|
549 if (ev->kq_errno) {
|
|
|
550 ev->error = 1;
|
|
|
551 }
|
|
|
552
|
|
340
|
553 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
554 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
555 "kevent() reported that client closed prematurely "
|
|
|
556 "connection, so upstream connection is closed too");
|
|
28
|
557 ngx_http_upstream_finalize_request(r, u,
|
|
|
558 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
559 return;
|
|
|
560 }
|
|
|
561
|
|
|
562 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
563 "kevent() reported that client closed "
|
|
|
564 "prematurely connection");
|
|
|
565
|
|
|
566 if (u->peer.connection == NULL) {
|
|
|
567 ngx_http_upstream_finalize_request(r, u,
|
|
|
568 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
569 return;
|
|
|
570 }
|
|
|
571
|
|
|
572 return;
|
|
|
573 }
|
|
|
574
|
|
|
575 #endif
|
|
|
576
|
|
|
577 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
578
|
|
|
579 err = ngx_socket_errno;
|
|
|
580
|
|
286
|
581 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
582 "http upstream recv(): %d", n);
|
|
|
583
|
|
28
|
584 /*
|
|
|
585 * we do not need to disable the write event because
|
|
|
586 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
587 */
|
|
|
588
|
|
|
589 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
590 return;
|
|
|
591 }
|
|
|
592
|
|
|
593 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
594 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
595 ngx_http_upstream_finalize_request(r, u,
|
|
|
596 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
597 return;
|
|
|
598 }
|
|
|
599 }
|
|
|
600
|
|
|
601 if (n > 0) {
|
|
|
602 return;
|
|
|
603 }
|
|
|
604
|
|
|
605 if (n == -1) {
|
|
|
606 if (err == NGX_EAGAIN) {
|
|
|
607 return;
|
|
|
608 }
|
|
|
609
|
|
|
610 ev->error = 1;
|
|
|
611
|
|
32
|
612 } else { /* n == 0 */
|
|
28
|
613 err = 0;
|
|
|
614 }
|
|
|
615
|
|
78
|
616 ev->eof = 1;
|
|
132
|
617 c->error = 1;
|
|
78
|
618
|
|
340
|
619 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
620 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
621 "client closed prematurely connection, "
|
|
|
622 "so upstream connection is closed too");
|
|
|
623 ngx_http_upstream_finalize_request(r, u,
|
|
|
624 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
625 return;
|
|
|
626 }
|
|
|
627
|
|
|
628 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
629 "client closed prematurely connection");
|
|
|
630
|
|
|
631 if (u->peer.connection == NULL) {
|
|
|
632 ngx_http_upstream_finalize_request(r, u,
|
|
|
633 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
634 return;
|
|
|
635 }
|
|
|
636 }
|
|
|
637
|
|
|
638
|
|
36
|
639 static void
|
|
|
640 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
641 {
|
|
140
|
642 ngx_int_t rc;
|
|
214
|
643 ngx_time_t *tp;
|
|
140
|
644 ngx_connection_t *c;
|
|
28
|
645
|
|
32
|
646 r->connection->log->action = "connecting to upstream";
|
|
28
|
647
|
|
|
648 r->connection->single_connection = 0;
|
|
|
649
|
|
262
|
650 if (u->state && u->state->response_sec) {
|
|
214
|
651 tp = ngx_timeofday();
|
|
262
|
652 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
653 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
654 }
|
|
|
655
|
|
296
|
656 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
657 if (u->state == NULL) {
|
|
|
658 ngx_http_upstream_finalize_request(r, u,
|
|
|
659 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
660 return;
|
|
|
661 }
|
|
|
662
|
|
|
663 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
664
|
|
|
665 tp = ngx_timeofday();
|
|
262
|
666 u->state->response_sec = tp->sec;
|
|
|
667 u->state->response_msec = tp->msec;
|
|
214
|
668
|
|
28
|
669 rc = ngx_event_connect_peer(&u->peer);
|
|
|
670
|
|
|
671 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
672 "http upstream connect: %i", rc);
|
|
|
673
|
|
|
674 if (rc == NGX_ERROR) {
|
|
|
675 ngx_http_upstream_finalize_request(r, u,
|
|
|
676 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
677 return;
|
|
|
678 }
|
|
|
679
|
|
356
|
680 u->state->peer = u->peer.name;
|
|
|
681
|
|
92
|
682 if (rc == NGX_BUSY) {
|
|
|
683 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
684 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
685 return;
|
|
92
|
686 }
|
|
|
687
|
|
326
|
688 if (rc == NGX_DECLINED) {
|
|
28
|
689 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
690 return;
|
|
|
691 }
|
|
|
692
|
|
126
|
693 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
694
|
|
28
|
695 c = u->peer.connection;
|
|
|
696
|
|
|
697 c->data = r;
|
|
140
|
698
|
|
58
|
699 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
700 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
701
|
|
326
|
702 c->sendfile &= r->connection->sendfile;
|
|
28
|
703
|
|
|
704 c->pool = r->pool;
|
|
|
705 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
706
|
|
|
707 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
708
|
|
|
709 u->writer.out = NULL;
|
|
|
710 u->writer.last = &u->writer.out;
|
|
|
711 u->writer.connection = c;
|
|
|
712 u->writer.limit = 0;
|
|
|
713
|
|
|
714 if (u->request_sent) {
|
|
58
|
715 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
716 ngx_http_upstream_finalize_request(r, u,
|
|
|
717 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
718 return;
|
|
|
719 }
|
|
28
|
720 }
|
|
|
721
|
|
276
|
722 if (r->request_body
|
|
|
723 && r->request_body->buf
|
|
|
724 && r->request_body->temp_file
|
|
|
725 && r == r->main)
|
|
|
726 {
|
|
122
|
727 /*
|
|
|
728 * the r->request_body->buf can be reused for one request only,
|
|
|
729 * the subrequests should allocate their own temporay bufs
|
|
|
730 */
|
|
|
731
|
|
|
732 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
733 if (u->output.free == NULL) {
|
|
|
734 ngx_http_upstream_finalize_request(r, u,
|
|
|
735 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
736 return;
|
|
28
|
737 }
|
|
122
|
738
|
|
|
739 u->output.free->buf = r->request_body->buf;
|
|
|
740 u->output.free->next = NULL;
|
|
|
741 u->output.allocated = 1;
|
|
|
742
|
|
|
743 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
744 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
745 r->request_body->buf->tag = u->output.tag;
|
|
28
|
746 }
|
|
|
747
|
|
|
748 u->request_sent = 0;
|
|
|
749
|
|
|
750 if (rc == NGX_AGAIN) {
|
|
|
751 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
752 return;
|
|
|
753 }
|
|
|
754
|
|
126
|
755 #if (NGX_HTTP_SSL)
|
|
|
756
|
|
348
|
757 if (u->ssl && c->ssl == NULL) {
|
|
140
|
758 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
759 return;
|
|
|
760 }
|
|
|
761
|
|
|
762 #endif
|
|
|
763
|
|
28
|
764 ngx_http_upstream_send_request(r, u);
|
|
|
765 }
|
|
|
766
|
|
|
767
|
|
126
|
768 #if (NGX_HTTP_SSL)
|
|
|
769
|
|
|
770 static void
|
|
140
|
771 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
772 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
773 {
|
|
260
|
774 ngx_int_t rc;
|
|
140
|
775
|
|
|
776 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
777 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
778 == NGX_ERROR)
|
|
|
779 {
|
|
|
780 ngx_http_upstream_finalize_request(r, u,
|
|
|
781 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
782 return;
|
|
|
783 }
|
|
|
784
|
|
|
785 c->sendfile = 0;
|
|
168
|
786 u->output.sendfile = 0;
|
|
140
|
787
|
|
318
|
788 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
140
|
789 ngx_http_upstream_finalize_request(r, u,
|
|
|
790 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
791 return;
|
|
|
792 }
|
|
|
793
|
|
190
|
794 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
795
|
|
140
|
796 rc = ngx_ssl_handshake(c);
|
|
|
797
|
|
|
798 if (rc == NGX_AGAIN) {
|
|
|
799 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
800 return;
|
|
|
801 }
|
|
|
802
|
|
|
803 ngx_http_upstream_ssl_handshake(c);
|
|
|
804 }
|
|
|
805
|
|
|
806
|
|
|
807 static void
|
|
126
|
808 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
809 {
|
|
|
810 ngx_http_request_t *r;
|
|
|
811 ngx_http_upstream_t *u;
|
|
|
812
|
|
|
813 r = c->data;
|
|
|
814 u = r->upstream;
|
|
|
815
|
|
|
816 if (c->ssl->handshaked) {
|
|
|
817
|
|
260
|
818 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
819
|
|
126
|
820 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
821 c->read->handler = ngx_http_upstream_process_header;
|
|
|
822
|
|
|
823 ngx_http_upstream_send_request(r, u);
|
|
|
824
|
|
|
825 return;
|
|
|
826 }
|
|
|
827
|
|
|
828 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
829
|
|
|
830 }
|
|
|
831
|
|
|
832 #endif
|
|
|
833
|
|
|
834
|
|
58
|
835 static ngx_int_t
|
|
36
|
836 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
837 {
|
|
|
838 ngx_chain_t *cl;
|
|
|
839
|
|
58
|
840 if (u->reinit_request(r) != NGX_OK) {
|
|
|
841 return NGX_ERROR;
|
|
|
842 }
|
|
|
843
|
|
356
|
844 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
845
|
|
|
846 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
847 sizeof(ngx_table_elt_t))
|
|
|
848 != NGX_OK)
|
|
58
|
849 {
|
|
|
850 return NGX_ERROR;
|
|
28
|
851 }
|
|
|
852
|
|
|
853 /* reinit the request chain */
|
|
126
|
854
|
|
58
|
855 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
856 cl->buf->pos = cl->buf->start;
|
|
|
857 cl->buf->file_pos = 0;
|
|
|
858 }
|
|
|
859
|
|
58
|
860 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
861
|
|
122
|
862 if (r->request_body && r->request_body->temp_file
|
|
146
|
863 && r != r->main && u->output.buf)
|
|
122
|
864 {
|
|
|
865 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
866 if (u->output.free == NULL) {
|
|
|
867 return NGX_ERROR;
|
|
58
|
868 }
|
|
122
|
869
|
|
|
870 u->output.free->buf = u->output.buf;
|
|
|
871 u->output.free->next = NULL;
|
|
|
872
|
|
|
873 u->output.buf->pos = u->output.buf->start;
|
|
|
874 u->output.buf->last = u->output.buf->start;
|
|
58
|
875 }
|
|
28
|
876
|
|
|
877 u->output.buf = NULL;
|
|
|
878 u->output.in = NULL;
|
|
|
879 u->output.busy = NULL;
|
|
126
|
880
|
|
130
|
881 /* reinit u->buffer */
|
|
126
|
882
|
|
28
|
883 #if 0
|
|
|
884 if (u->cache) {
|
|
130
|
885 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
886 u->buffer.last = u->buffer.pos;
|
|
28
|
887
|
|
|
888 } else {
|
|
130
|
889 u->buffer.pos = u->buffer.start;
|
|
|
890 u->buffer.last = u->buffer.start;
|
|
28
|
891 }
|
|
|
892 #else
|
|
58
|
893
|
|
130
|
894 u->buffer.pos = u->buffer.start;
|
|
|
895 u->buffer.last = u->buffer.start;
|
|
58
|
896
|
|
28
|
897 #endif
|
|
|
898
|
|
58
|
899 return NGX_OK;
|
|
28
|
900 }
|
|
|
901
|
|
|
902
|
|
36
|
903 static void
|
|
|
904 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
905 {
|
|
294
|
906 ngx_int_t rc;
|
|
32
|
907 ngx_connection_t *c;
|
|
126
|
908
|
|
28
|
909 c = u->peer.connection;
|
|
|
910
|
|
|
911 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
912 "http upstream send request");
|
|
|
913
|
|
294
|
914 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
915 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
916 return;
|
|
28
|
917 }
|
|
|
918
|
|
32
|
919 c->log->action = "sending request to upstream";
|
|
28
|
920
|
|
58
|
921 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
922
|
|
|
923 u->request_sent = 1;
|
|
|
924
|
|
|
925 if (rc == NGX_ERROR) {
|
|
|
926 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
927 return;
|
|
|
928 }
|
|
|
929
|
|
|
930 if (c->write->timer_set) {
|
|
|
931 ngx_del_timer(c->write);
|
|
|
932 }
|
|
|
933
|
|
|
934 if (rc == NGX_AGAIN) {
|
|
|
935 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
936
|
|
|
937 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
938 {
|
|
|
939 ngx_http_upstream_finalize_request(r, u,
|
|
|
940 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
941 return;
|
|
|
942 }
|
|
|
943
|
|
|
944 return;
|
|
|
945 }
|
|
|
946
|
|
|
947 /* rc == NGX_OK */
|
|
|
948
|
|
|
949 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
950 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
951 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
952 ngx_tcp_push_n " failed");
|
|
|
953 ngx_http_upstream_finalize_request(r, u,
|
|
|
954 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
955 return;
|
|
28
|
956 }
|
|
|
957
|
|
|
958 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
959 }
|
|
126
|
960
|
|
28
|
961 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
962
|
|
|
963 #if 1
|
|
|
964 if (c->read->ready) {
|
|
126
|
965
|
|
28
|
966 /* post aio operation */
|
|
|
967
|
|
|
968 /*
|
|
|
969 * TODO comment
|
|
|
970 * although we can post aio operation just in the end
|
|
|
971 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
972 * it's better to do here because we postpone header buffer allocation
|
|
|
973 */
|
|
|
974
|
|
|
975 ngx_http_upstream_process_header(c->read);
|
|
|
976 return;
|
|
|
977 }
|
|
|
978 #endif
|
|
|
979
|
|
58
|
980 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
981
|
|
58
|
982 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
983 ngx_http_upstream_finalize_request(r, u,
|
|
|
984 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
985 return;
|
|
|
986 }
|
|
|
987 }
|
|
|
988
|
|
|
989
|
|
36
|
990 static void
|
|
|
991 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
992 {
|
|
|
993 ngx_connection_t *c;
|
|
|
994 ngx_http_request_t *r;
|
|
|
995 ngx_http_upstream_t *u;
|
|
|
996
|
|
|
997 c = wev->data;
|
|
|
998 r = c->data;
|
|
|
999 u = r->upstream;
|
|
|
1000
|
|
|
1001 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1002 "http upstream send request handler");
|
|
|
1003
|
|
|
1004 if (wev->timedout) {
|
|
|
1005 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
140
|
1009 #if (NGX_HTTP_SSL)
|
|
|
1010
|
|
348
|
1011 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1012 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1013 return;
|
|
|
1014 }
|
|
|
1015
|
|
|
1016 #endif
|
|
|
1017
|
|
200
|
1018 if (u->header_sent) {
|
|
|
1019 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
1020
|
|
|
1021 (void) ngx_handle_write_event(wev, 0);
|
|
|
1022
|
|
|
1023 return;
|
|
|
1024 }
|
|
|
1025
|
|
28
|
1026 ngx_http_upstream_send_request(r, u);
|
|
|
1027 }
|
|
|
1028
|
|
|
1029
|
|
36
|
1030 static void
|
|
|
1031 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
1032 {
|
|
64
|
1033 ssize_t n;
|
|
|
1034 ngx_int_t rc;
|
|
122
|
1035 ngx_str_t *uri, args;
|
|
198
|
1036 ngx_uint_t i, flags;
|
|
64
|
1037 ngx_list_part_t *part;
|
|
|
1038 ngx_table_elt_t *h;
|
|
|
1039 ngx_connection_t *c;
|
|
|
1040 ngx_http_request_t *r;
|
|
|
1041 ngx_http_upstream_t *u;
|
|
|
1042 ngx_http_err_page_t *err_page;
|
|
|
1043 ngx_http_core_loc_conf_t *clcf;
|
|
|
1044 ngx_http_upstream_header_t *hh;
|
|
|
1045 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1046
|
|
|
1047 c = rev->data;
|
|
|
1048 r = c->data;
|
|
|
1049 u = r->upstream;
|
|
|
1050
|
|
|
1051 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
1052 "http upstream process header");
|
|
28
|
1053
|
|
32
|
1054 c->log->action = "reading response header from upstream";
|
|
28
|
1055
|
|
|
1056 if (rev->timedout) {
|
|
|
1057 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1058 return;
|
|
|
1059 }
|
|
126
|
1060
|
|
294
|
1061 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1062 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1063 return;
|
|
|
1064 }
|
|
|
1065
|
|
130
|
1066 if (u->buffer.start == NULL) {
|
|
|
1067 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1068 if (u->buffer.start == NULL) {
|
|
28
|
1069 ngx_http_upstream_finalize_request(r, u,
|
|
|
1070 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1071 return;
|
|
|
1072 }
|
|
|
1073
|
|
130
|
1074 u->buffer.pos = u->buffer.start;
|
|
|
1075 u->buffer.last = u->buffer.start;
|
|
|
1076 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1077 u->buffer.temporary = 1;
|
|
|
1078
|
|
|
1079 u->buffer.tag = u->output.tag;
|
|
28
|
1080
|
|
356
|
1081 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1082 sizeof(ngx_table_elt_t))
|
|
|
1083 != NGX_OK)
|
|
58
|
1084 {
|
|
|
1085 ngx_http_upstream_finalize_request(r, u,
|
|
|
1086 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1087 return;
|
|
|
1088 }
|
|
|
1089
|
|
28
|
1090 #if 0
|
|
|
1091 if (u->cache) {
|
|
130
|
1092 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1093 u->buffer.last = u->buffer.pos;
|
|
28
|
1094 }
|
|
|
1095 #endif
|
|
|
1096 }
|
|
|
1097
|
|
340
|
1098 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
28
|
1099
|
|
|
1100 if (n == NGX_AGAIN) {
|
|
|
1101 #if 0
|
|
|
1102 ngx_add_timer(rev, u->read_timeout);
|
|
|
1103 #endif
|
|
|
1104
|
|
|
1105 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1106 ngx_http_upstream_finalize_request(r, u,
|
|
|
1107 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1108 return;
|
|
|
1109 }
|
|
|
1110
|
|
|
1111 return;
|
|
|
1112 }
|
|
|
1113
|
|
|
1114 if (n == 0) {
|
|
|
1115 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1116 "upstream prematurely closed connection");
|
|
|
1117 }
|
|
|
1118
|
|
|
1119 if (n == NGX_ERROR || n == 0) {
|
|
|
1120 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1121 return;
|
|
|
1122 }
|
|
|
1123
|
|
130
|
1124 u->buffer.last += n;
|
|
28
|
1125
|
|
|
1126 #if 0
|
|
|
1127 u->valid_header_in = 0;
|
|
|
1128
|
|
|
1129 u->peer.cached = 0;
|
|
|
1130 #endif
|
|
|
1131
|
|
|
1132 rc = u->process_header(r);
|
|
|
1133
|
|
|
1134 if (rc == NGX_AGAIN) {
|
|
|
1135 #if 0
|
|
|
1136 ngx_add_timer(rev, u->read_timeout);
|
|
|
1137 #endif
|
|
|
1138
|
|
130
|
1139 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1140 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1141 "upstream sent too big header");
|
|
|
1142
|
|
|
1143 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1144 return;
|
|
|
1145 }
|
|
|
1146
|
|
|
1147 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1148 ngx_http_upstream_finalize_request(r, u,
|
|
|
1149 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1150 return;
|
|
|
1151 }
|
|
|
1152
|
|
|
1153 return;
|
|
|
1154 }
|
|
|
1155
|
|
|
1156 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1157 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1158 return;
|
|
|
1159 }
|
|
|
1160
|
|
356
|
1161 if (rc == NGX_ERROR) {
|
|
28
|
1162 ngx_http_upstream_finalize_request(r, u,
|
|
|
1163 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1164 return;
|
|
|
1165 }
|
|
|
1166
|
|
|
1167 /* rc == NGX_OK */
|
|
|
1168
|
|
248
|
1169 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1170 && r->subrequest_in_memory)
|
|
|
1171 {
|
|
|
1172 u->buffer.last = u->buffer.pos;
|
|
|
1173 }
|
|
|
1174
|
|
78
|
1175 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1176
|
|
|
1177 if (u->peer.tries > 1
|
|
|
1178 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1179 {
|
|
|
1180 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1181 return;
|
|
|
1182 }
|
|
|
1183
|
|
|
1184 #if (NGX_HTTP_CACHE)
|
|
|
1185
|
|
|
1186 if (u->peer.tries == 0
|
|
|
1187 && u->stale
|
|
|
1188 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1189 {
|
|
|
1190 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1191 ngx_http_send_cached_response(r));
|
|
58
|
1192 return;
|
|
|
1193 }
|
|
|
1194
|
|
|
1195 #endif
|
|
|
1196 }
|
|
|
1197
|
|
146
|
1198 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1199
|
|
|
1200 if (u->peer.tries > 1
|
|
|
1201 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1202 {
|
|
|
1203 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1204 return;
|
|
|
1205 }
|
|
|
1206
|
|
224
|
1207 if (u->conf->intercept_404) {
|
|
|
1208 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1209 return;
|
|
|
1210 }
|
|
58
|
1211 }
|
|
|
1212
|
|
|
1213
|
|
78
|
1214 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1215 && u->conf->intercept_errors)
|
|
36
|
1216 {
|
|
|
1217 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1218
|
|
|
1219 if (clcf->error_pages) {
|
|
|
1220
|
|
|
1221 err_page = clcf->error_pages->elts;
|
|
|
1222 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1223 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1224
|
|
|
1225 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1226
|
|
|
1227 r->headers_out.www_authenticate =
|
|
|
1228 ngx_list_push(&r->headers_out.headers);
|
|
|
1229
|
|
|
1230 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1231 ngx_http_upstream_finalize_request(r, u,
|
|
|
1232 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1233 return;
|
|
|
1234 }
|
|
|
1235
|
|
126
|
1236 *r->headers_out.www_authenticate =
|
|
78
|
1237 *u->headers_in.www_authenticate;
|
|
|
1238 }
|
|
|
1239
|
|
36
|
1240 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1241 u->headers_in.status_n);
|
|
36
|
1242 return;
|
|
|
1243 }
|
|
|
1244 }
|
|
|
1245 }
|
|
|
1246 }
|
|
|
1247
|
|
230
|
1248 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1249
|
|
356
|
1250 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1251
|
|
64
|
1252 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1253
|
|
356
|
1254 part = &u->headers_in.headers.part;
|
|
64
|
1255 h = part->elts;
|
|
|
1256
|
|
|
1257 for (i = 0; /* void */; i++) {
|
|
|
1258
|
|
|
1259 if (i >= part->nelts) {
|
|
|
1260 if (part->next == NULL) {
|
|
|
1261 break;
|
|
|
1262 }
|
|
126
|
1263
|
|
64
|
1264 part = part->next;
|
|
|
1265 h = part->elts;
|
|
|
1266 i = 0;
|
|
|
1267 }
|
|
|
1268
|
|
198
|
1269 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1270 h[i].lowcase_key, h[i].key.len);
|
|
|
1271
|
|
|
1272 if (hh && hh->redirect) {
|
|
|
1273 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1274 ngx_http_finalize_request(r,
|
|
244
|
1275 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1276 return;
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279 }
|
|
|
1280
|
|
356
|
1281 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1282 args.len = 0;
|
|
|
1283 args.data = NULL;
|
|
|
1284 flags = 0;
|
|
|
1285
|
|
|
1286 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1287 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1288 return;
|
|
|
1289 }
|
|
|
1290
|
|
|
1291 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1292 r->zero_in_uri = 1;
|
|
|
1293 }
|
|
|
1294
|
|
202
|
1295 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1296 r->method = NGX_HTTP_GET;
|
|
|
1297 }
|
|
|
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
|
|
|
1383 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1384 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1385 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1386 return;
|
|
|
1387 }
|
|
|
1388
|
|
|
1389 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1390 return;
|
|
|
1391 }
|
|
|
1392
|
|
|
1393 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1394
|
|
|
1395 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1396 }
|
|
|
1397
|
|
|
1398
|
|
294
|
1399 static ngx_int_t
|
|
|
1400 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1401 {
|
|
|
1402 int err;
|
|
|
1403 socklen_t len;
|
|
|
1404
|
|
|
1405 #if (NGX_HAVE_KQUEUE)
|
|
|
1406
|
|
|
1407 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1408 if (c->write->pending_eof) {
|
|
336
|
1409 c->log->action = "connecting to upstream";
|
|
296
|
1410 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1411 "kevent() reported that connect() failed");
|
|
|
1412 return NGX_ERROR;
|
|
|
1413 }
|
|
294
|
1414
|
|
|
1415 } else
|
|
|
1416 #endif
|
|
|
1417 {
|
|
296
|
1418 err = 0;
|
|
|
1419 len = sizeof(int);
|
|
|
1420
|
|
|
1421 /*
|
|
|
1422 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1423 * Solaris returns -1 and sets errno
|
|
|
1424 */
|
|
|
1425
|
|
|
1426 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1427 == -1)
|
|
|
1428 {
|
|
|
1429 err = ngx_errno;
|
|
|
1430 }
|
|
|
1431
|
|
|
1432 if (err) {
|
|
336
|
1433 c->log->action = "connecting to upstream";
|
|
296
|
1434 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1435 return NGX_ERROR;
|
|
|
1436 }
|
|
294
|
1437 }
|
|
|
1438
|
|
|
1439 return NGX_OK;
|
|
|
1440 }
|
|
|
1441
|
|
|
1442
|
|
248
|
1443 static void
|
|
|
1444 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1445 {
|
|
|
1446 size_t size;
|
|
|
1447 ssize_t n;
|
|
|
1448 ngx_buf_t *b;
|
|
|
1449 ngx_connection_t *c;
|
|
|
1450 ngx_http_request_t *r;
|
|
|
1451 ngx_http_upstream_t *u;
|
|
|
1452
|
|
|
1453 c = rev->data;
|
|
|
1454 r = c->data;
|
|
|
1455 u = r->upstream;
|
|
|
1456
|
|
|
1457 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1458 "http upstream process body on memory");
|
|
|
1459
|
|
|
1460 if (rev->timedout) {
|
|
|
1461 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1462 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1463 return;
|
|
|
1464 }
|
|
|
1465
|
|
|
1466 b = &u->buffer;
|
|
|
1467
|
|
|
1468 for ( ;; ) {
|
|
|
1469
|
|
|
1470 size = b->end - b->last;
|
|
|
1471
|
|
|
1472 if (size == 0) {
|
|
|
1473 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1474 "upstream buffer is too small to read repsonse");
|
|
|
1475 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1476 return;
|
|
|
1477 }
|
|
|
1478
|
|
|
1479 n = c->recv(c, b->last, size);
|
|
|
1480
|
|
|
1481 if (n == NGX_AGAIN) {
|
|
|
1482 break;
|
|
|
1483 }
|
|
|
1484
|
|
|
1485 if (n == 0 || n == NGX_ERROR) {
|
|
|
1486 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1487 return;
|
|
|
1488 }
|
|
|
1489
|
|
|
1490 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1491 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1492 return;
|
|
|
1493 }
|
|
|
1494
|
|
|
1495 if (!rev->ready) {
|
|
|
1496 break;
|
|
|
1497 }
|
|
|
1498 }
|
|
|
1499
|
|
|
1500 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1501 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1502 return;
|
|
|
1503 }
|
|
|
1504
|
|
|
1505 if (rev->active) {
|
|
|
1506 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1507
|
|
|
1508 } else if (rev->timer_set) {
|
|
|
1509 ngx_del_timer(rev);
|
|
|
1510 }
|
|
230
|
1511 }
|
|
|
1512
|
|
|
1513
|
|
|
1514 static void
|
|
|
1515 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1516 {
|
|
|
1517 int tcp_nodelay;
|
|
|
1518 ssize_t size;
|
|
|
1519 ngx_int_t rc;
|
|
|
1520 ngx_event_pipe_t *p;
|
|
|
1521 ngx_connection_t *c;
|
|
|
1522 ngx_pool_cleanup_t *cl;
|
|
|
1523 ngx_pool_cleanup_file_t *clf;
|
|
|
1524 ngx_http_core_loc_conf_t *clcf;
|
|
|
1525
|
|
58
|
1526 rc = ngx_http_send_header(r);
|
|
28
|
1527
|
|
274
|
1528 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1529 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1530 return;
|
|
|
1531 }
|
|
|
1532
|
|
|
1533 u->header_sent = 1;
|
|
|
1534
|
|
122
|
1535 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1536 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1537 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1538 clf = cl->data;
|
|
|
1539
|
|
|
1540 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1541 cl->handler(clf);
|
|
|
1542 cl->handler = NULL;
|
|
208
|
1543 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1544 break;
|
|
|
1545 }
|
|
|
1546 }
|
|
|
1547 }
|
|
|
1548 }
|
|
|
1549
|
|
132
|
1550 c = r->connection;
|
|
|
1551
|
|
130
|
1552 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1553
|
|
198
|
1554 if (!u->buffering) {
|
|
130
|
1555
|
|
|
1556 if (u->input_filter == NULL) {
|
|
|
1557 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1558 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1559 u->input_filter_ctx = r;
|
|
|
1560 }
|
|
|
1561
|
|
|
1562 u->peer.connection->read->handler =
|
|
|
1563 ngx_http_upstream_process_non_buffered_body;
|
|
|
1564 r->write_event_handler =
|
|
|
1565 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1566
|
|
|
1567 r->limit_rate = 0;
|
|
|
1568
|
|
|
1569 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1570 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1571 return;
|
|
|
1572 }
|
|
|
1573
|
|
132
|
1574 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1575 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1576
|
|
|
1577 tcp_nodelay = 1;
|
|
|
1578
|
|
|
1579 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1580 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1581 {
|
|
|
1582 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1583 "setsockopt(TCP_NODELAY) failed");
|
|
|
1584 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1585 return;
|
|
|
1586 }
|
|
|
1587
|
|
|
1588 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1589 }
|
|
|
1590
|
|
130
|
1591 size = u->buffer.last - u->buffer.pos;
|
|
|
1592
|
|
|
1593 if (size) {
|
|
|
1594 u->buffer.last = u->buffer.pos;
|
|
|
1595
|
|
|
1596 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1597 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1598 return;
|
|
|
1599 }
|
|
|
1600
|
|
132
|
1601 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1602
|
|
|
1603 } else {
|
|
|
1604 u->buffer.pos = u->buffer.start;
|
|
|
1605 u->buffer.last = u->buffer.start;
|
|
|
1606
|
|
|
1607 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1608 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1609 return;
|
|
|
1610 }
|
|
336
|
1611
|
|
|
1612 if (u->peer.connection->read->ready) {
|
|
|
1613 ngx_http_upstream_process_non_buffered_body(
|
|
|
1614 u->peer.connection->read);
|
|
|
1615 }
|
|
130
|
1616 }
|
|
|
1617
|
|
|
1618 return;
|
|
|
1619 }
|
|
|
1620
|
|
28
|
1621 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1622
|
|
|
1623 #if 0
|
|
|
1624
|
|
|
1625 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1626 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1627 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1628 ngx_close_file_n " \"%s\" failed",
|
|
|
1629 u->cache->ctx.file.name.data);
|
|
|
1630 }
|
|
|
1631 }
|
|
|
1632
|
|
340
|
1633 if (u->cacheable) {
|
|
130
|
1634 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1635
|
|
|
1636 header->expires = u->cache->ctx.expires;
|
|
|
1637 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1638 header->date = u->cache->ctx.date;
|
|
|
1639 header->length = r->headers_out.content_length_n;
|
|
|
1640 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1641
|
|
|
1642 header->key_len = u->cache->ctx.key0.len;
|
|
|
1643 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1644 header->key[header->key_len] = LF;
|
|
|
1645 }
|
|
|
1646
|
|
|
1647 #endif
|
|
|
1648
|
|
130
|
1649 p = u->pipe;
|
|
28
|
1650
|
|
|
1651 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1652 p->output_ctx = r;
|
|
|
1653 p->tag = u->output.tag;
|
|
126
|
1654 p->bufs = u->conf->bufs;
|
|
28
|
1655 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1656 p->upstream = u->peer.connection;
|
|
132
|
1657 p->downstream = c;
|
|
28
|
1658 p->pool = r->pool;
|
|
132
|
1659 p->log = c->log;
|
|
126
|
1660
|
|
340
|
1661 p->cacheable = u->cacheable || u->store;
|
|
28
|
1662
|
|
50
|
1663 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1664 if (p->temp_file == NULL) {
|
|
28
|
1665 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1666 return;
|
|
|
1667 }
|
|
|
1668
|
|
|
1669 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1670 p->temp_file->file.log = c->log;
|
|
28
|
1671 p->temp_file->path = u->conf->temp_path;
|
|
|
1672 p->temp_file->pool = r->pool;
|
|
126
|
1673
|
|
340
|
1674 if (u->cacheable || u->store) {
|
|
28
|
1675 p->temp_file->persistent = 1;
|
|
318
|
1676
|
|
28
|
1677 } else {
|
|
216
|
1678 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1679 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1680 "to a temporary file";
|
|
|
1681 }
|
|
|
1682
|
|
|
1683 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1684 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1685
|
|
50
|
1686 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1687 if (p->preread_bufs == NULL) {
|
|
28
|
1688 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1689 return;
|
|
|
1690 }
|
|
318
|
1691
|
|
130
|
1692 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1693 p->preread_bufs->next = NULL;
|
|
130
|
1694 u->buffer.recycled = 1;
|
|
|
1695
|
|
|
1696 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1697
|
|
340
|
1698 if (u->cacheable) {
|
|
318
|
1699
|
|
28
|
1700 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1701 if (p->buf_to_file == NULL) {
|
|
|
1702 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1703 return;
|
|
|
1704 }
|
|
318
|
1705
|
|
130
|
1706 p->buf_to_file->pos = u->buffer.start;
|
|
|
1707 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1708 p->buf_to_file->temporary = 1;
|
|
|
1709 }
|
|
|
1710
|
|
|
1711 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1712 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1713 p->single_buf = 1;
|
|
|
1714 }
|
|
|
1715
|
|
|
1716 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1717 p->free_bufs = 1;
|
|
|
1718
|
|
|
1719 /*
|
|
130
|
1720 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1721 * as though these bytes were read
|
|
|
1722 */
|
|
130
|
1723 u->buffer.last = u->buffer.pos;
|
|
28
|
1724
|
|
|
1725 if (u->conf->cyclic_temp_file) {
|
|
|
1726
|
|
|
1727 /*
|
|
|
1728 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1729 * because the writing a new data may interfere with sendfile()
|
|
|
1730 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1731 */
|
|
|
1732
|
|
|
1733 p->cyclic_temp_file = 1;
|
|
132
|
1734 c->sendfile = 0;
|
|
28
|
1735
|
|
|
1736 } else {
|
|
|
1737 p->cyclic_temp_file = 0;
|
|
|
1738 }
|
|
|
1739
|
|
|
1740 p->read_timeout = u->conf->read_timeout;
|
|
|
1741 p->send_timeout = clcf->send_timeout;
|
|
|
1742 p->send_lowat = clcf->send_lowat;
|
|
|
1743
|
|
58
|
1744 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1745 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1746
|
|
|
1747 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1748 }
|
|
|
1749
|
|
|
1750
|
|
36
|
1751 static void
|
|
130
|
1752 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1753 {
|
|
|
1754 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1755 }
|
|
|
1756
|
|
|
1757
|
|
|
1758 static void
|
|
|
1759 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1760 {
|
|
|
1761 size_t size;
|
|
|
1762 ssize_t n;
|
|
|
1763 ngx_buf_t *b;
|
|
132
|
1764 ngx_int_t rc;
|
|
130
|
1765 ngx_uint_t do_write;
|
|
260
|
1766 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1767 ngx_http_request_t *r;
|
|
|
1768 ngx_http_upstream_t *u;
|
|
|
1769 ngx_http_core_loc_conf_t *clcf;
|
|
|
1770
|
|
|
1771 c = ev->data;
|
|
244
|
1772 r = c->data;
|
|
|
1773 u = r->upstream;
|
|
130
|
1774
|
|
|
1775 if (ev->write) {
|
|
|
1776 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1777 "http upstream process non buffered downstream");
|
|
|
1778 c->log->action = "sending to client";
|
|
|
1779
|
|
|
1780 } else {
|
|
|
1781 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1782 "http upstream process non buffered upstream");
|
|
|
1783 c->log->action = "reading upstream";
|
|
|
1784 }
|
|
|
1785
|
|
|
1786 if (ev->timedout) {
|
|
|
1787 if (ev->write) {
|
|
|
1788 c->timedout = 1;
|
|
160
|
1789 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1790
|
|
130
|
1791 } else {
|
|
160
|
1792 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1793 }
|
|
244
|
1794
|
|
|
1795 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1796 return;
|
|
130
|
1797 }
|
|
|
1798
|
|
260
|
1799 downstream = r->connection;
|
|
|
1800 upstream = u->peer.connection;
|
|
130
|
1801
|
|
|
1802 b = &u->buffer;
|
|
|
1803
|
|
|
1804 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1805
|
|
206
|
1806 do_write = ev->write || u->length == 0;
|
|
130
|
1807
|
|
|
1808 for ( ;; ) {
|
|
|
1809
|
|
|
1810 if (do_write) {
|
|
|
1811
|
|
|
1812 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1813 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1814
|
|
260
|
1815 if (downstream->destroyed) {
|
|
132
|
1816 return;
|
|
|
1817 }
|
|
|
1818
|
|
|
1819 if (rc == NGX_ERROR) {
|
|
130
|
1820 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1821 return;
|
|
|
1822 }
|
|
|
1823
|
|
|
1824 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1825 &u->out_bufs, u->output.tag);
|
|
|
1826 }
|
|
|
1827
|
|
|
1828 if (u->busy_bufs == NULL) {
|
|
|
1829
|
|
|
1830 if (u->length == 0
|
|
260
|
1831 || upstream->read->eof
|
|
|
1832 || upstream->read->error)
|
|
130
|
1833 {
|
|
|
1834 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1835 return;
|
|
|
1836 }
|
|
|
1837
|
|
|
1838 b->pos = b->start;
|
|
|
1839 b->last = b->start;
|
|
|
1840 }
|
|
|
1841 }
|
|
|
1842
|
|
|
1843 size = b->end - b->last;
|
|
|
1844
|
|
|
1845 if (size > u->length) {
|
|
|
1846 size = u->length;
|
|
|
1847 }
|
|
|
1848
|
|
260
|
1849 if (size && upstream->read->ready) {
|
|
|
1850
|
|
|
1851 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1852
|
|
|
1853 if (n == NGX_AGAIN) {
|
|
|
1854 break;
|
|
|
1855 }
|
|
|
1856
|
|
|
1857 if (n > 0) {
|
|
|
1858 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1859 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1860 return;
|
|
|
1861 }
|
|
|
1862 }
|
|
|
1863
|
|
|
1864 do_write = 1;
|
|
|
1865
|
|
|
1866 continue;
|
|
|
1867 }
|
|
|
1868
|
|
|
1869 break;
|
|
|
1870 }
|
|
|
1871
|
|
260
|
1872 if (downstream->data == r) {
|
|
|
1873 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1874 == NGX_ERROR)
|
|
|
1875 {
|
|
|
1876 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1877 return;
|
|
|
1878 }
|
|
130
|
1879 }
|
|
|
1880
|
|
276
|
1881 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1882 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1883
|
|
|
1884 } else if (downstream->write->timer_set) {
|
|
|
1885 ngx_del_timer(downstream->write);
|
|
130
|
1886 }
|
|
|
1887
|
|
260
|
1888 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1889 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1890 return;
|
|
|
1891 }
|
|
|
1892
|
|
276
|
1893 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1894 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1895
|
|
|
1896 } else if (upstream->read->timer_set) {
|
|
|
1897 ngx_del_timer(upstream->read);
|
|
130
|
1898 }
|
|
|
1899 }
|
|
|
1900
|
|
|
1901
|
|
|
1902 static ngx_int_t
|
|
|
1903 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1904 {
|
|
|
1905 return NGX_OK;
|
|
|
1906 }
|
|
|
1907
|
|
|
1908
|
|
|
1909 static ngx_int_t
|
|
|
1910 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1911 {
|
|
|
1912 ngx_http_request_t *r = data;
|
|
|
1913
|
|
|
1914 ngx_buf_t *b;
|
|
|
1915 ngx_chain_t *cl, **ll;
|
|
|
1916 ngx_http_upstream_t *u;
|
|
|
1917
|
|
|
1918 u = r->upstream;
|
|
|
1919
|
|
|
1920 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1921 ll = &cl->next;
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1925 if (cl == NULL) {
|
|
|
1926 return NGX_ERROR;
|
|
|
1927 }
|
|
|
1928
|
|
|
1929 *ll = cl;
|
|
|
1930
|
|
|
1931 cl->buf->flush = 1;
|
|
|
1932 cl->buf->memory = 1;
|
|
|
1933
|
|
|
1934 b = &u->buffer;
|
|
|
1935
|
|
|
1936 cl->buf->pos = b->last;
|
|
|
1937 b->last += bytes;
|
|
|
1938 cl->buf->last = b->last;
|
|
|
1939
|
|
|
1940 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1941 return NGX_OK;
|
|
|
1942 }
|
|
|
1943
|
|
|
1944 u->length -= bytes;
|
|
|
1945
|
|
|
1946 return NGX_OK;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949
|
|
|
1950 static void
|
|
58
|
1951 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1952 {
|
|
|
1953 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1954 }
|
|
|
1955
|
|
|
1956
|
|
|
1957 static void
|
|
36
|
1958 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1959 {
|
|
364
|
1960 ngx_temp_file_t *tf;
|
|
58
|
1961 ngx_event_pipe_t *p;
|
|
132
|
1962 ngx_connection_t *c, *downstream;
|
|
284
|
1963 ngx_http_log_ctx_t *ctx;
|
|
28
|
1964 ngx_http_request_t *r;
|
|
|
1965 ngx_http_upstream_t *u;
|
|
|
1966
|
|
|
1967 c = ev->data;
|
|
|
1968 r = c->data;
|
|
|
1969 u = r->upstream;
|
|
132
|
1970 downstream = r->connection;
|
|
28
|
1971
|
|
|
1972 if (ev->write) {
|
|
32
|
1973 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1974 "http upstream process downstream");
|
|
|
1975 c->log->action = "sending to client";
|
|
126
|
1976
|
|
28
|
1977 } else {
|
|
32
|
1978 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1979 "http upstream process upstream");
|
|
|
1980 c->log->action = "reading upstream";
|
|
284
|
1981
|
|
|
1982 ctx = c->log->data;
|
|
|
1983 ctx->current_request = r;
|
|
28
|
1984 }
|
|
126
|
1985
|
|
130
|
1986 p = u->pipe;
|
|
28
|
1987
|
|
|
1988 if (ev->timedout) {
|
|
|
1989 if (ev->write) {
|
|
76
|
1990 if (ev->delayed) {
|
|
|
1991
|
|
|
1992 ev->timedout = 0;
|
|
|
1993 ev->delayed = 0;
|
|
|
1994
|
|
|
1995 if (!ev->ready) {
|
|
|
1996 ngx_add_timer(ev, p->send_timeout);
|
|
|
1997
|
|
|
1998 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1999 {
|
|
|
2000 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2001 return;
|
|
|
2002 }
|
|
|
2003
|
|
|
2004 return;
|
|
|
2005 }
|
|
|
2006
|
|
|
2007 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2008
|
|
|
2009 if (downstream->destroyed) {
|
|
|
2010 return;
|
|
|
2011 }
|
|
|
2012
|
|
76
|
2013 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2014 return;
|
|
|
2015 }
|
|
|
2016
|
|
|
2017 } else {
|
|
|
2018 p->downstream_error = 1;
|
|
126
|
2019 c->timedout = 1;
|
|
160
|
2020 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
2021 }
|
|
28
|
2022
|
|
|
2023 } else {
|
|
126
|
2024 p->upstream_error = 1;
|
|
160
|
2025 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
2026 }
|
|
|
2027
|
|
|
2028 } else {
|
|
76
|
2029 if (ev->write && ev->delayed) {
|
|
|
2030 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2031 "http downstream delayed");
|
|
|
2032
|
|
|
2033 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
2034 return;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037 return;
|
|
|
2038 }
|
|
|
2039
|
|
28
|
2040 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2041
|
|
|
2042 if (downstream->destroyed) {
|
|
|
2043 return;
|
|
|
2044 }
|
|
|
2045
|
|
28
|
2046 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2047 return;
|
|
|
2048 }
|
|
|
2049 }
|
|
126
|
2050
|
|
28
|
2051 if (u->peer.connection) {
|
|
|
2052
|
|
318
|
2053 if (u->store) {
|
|
|
2054
|
|
364
|
2055 tf = u->pipe->temp_file;
|
|
|
2056
|
|
|
2057 if (p->upstream_eof
|
|
|
2058 && u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2059 && (u->headers_in.content_length_n == -1
|
|
|
2060 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2061 {
|
|
318
|
2062 ngx_http_upstream_store(r, u);
|
|
|
2063
|
|
|
2064 } else if ((p->upstream_error
|
|
|
2065 || (p->upstream_eof
|
|
|
2066 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
364
|
2067 && tf->file.fd != NGX_INVALID_FILE)
|
|
318
|
2068 {
|
|
364
|
2069 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2070
|
|
318
|
2071 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2072 ngx_delete_file_n " \"%s\" failed",
|
|
|
2073 u->pipe->temp_file->file.name.data);
|
|
|
2074 }
|
|
|
2075 }
|
|
|
2076 }
|
|
|
2077
|
|
28
|
2078 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2079
|
|
340
|
2080 if (p->upstream_done && u->cacheable) {
|
|
28
|
2081 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2082 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2083 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2084 return;
|
|
|
2085 }
|
|
|
2086
|
|
340
|
2087 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2088
|
|
|
2089 /* TODO: check length & update cache */
|
|
|
2090
|
|
|
2091 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2092 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2093 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2094 return;
|
|
|
2095 }
|
|
|
2096 }
|
|
|
2097
|
|
|
2098 #endif
|
|
|
2099
|
|
|
2100 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
2101 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2102 "http upstream exit: %p", p->out);
|
|
28
|
2103 #if 0
|
|
|
2104 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2105 #endif
|
|
|
2106 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2107 return;
|
|
|
2108 }
|
|
|
2109 }
|
|
|
2110
|
|
|
2111 if (p->downstream_error) {
|
|
32
|
2112 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2113 "http upstream downstream error");
|
|
28
|
2114
|
|
340
|
2115 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2116 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2117 }
|
|
|
2118 }
|
|
|
2119 }
|
|
|
2120
|
|
|
2121
|
|
36
|
2122 static void
|
|
318
|
2123 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2124 {
|
|
|
2125 char *failed;
|
|
|
2126 u_char *name;
|
|
|
2127 size_t root;
|
|
|
2128 time_t lm;
|
|
|
2129 ngx_err_t err;
|
|
|
2130 ngx_str_t *temp, path, *last_modified;
|
|
|
2131 ngx_temp_file_t *tf;
|
|
|
2132
|
|
358
|
2133 tf = u->pipe->temp_file;
|
|
|
2134
|
|
|
2135 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2136
|
|
|
2137 /* create file for empty 200 response */
|
|
|
2138
|
|
|
2139 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2140 if (tf == NULL) {
|
|
|
2141 return;
|
|
|
2142 }
|
|
|
2143
|
|
|
2144 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2145 tf->file.log = r->connection->log;
|
|
|
2146 tf->path = u->conf->temp_path;
|
|
|
2147 tf->pool = r->pool;
|
|
|
2148 tf->persistent = 1;
|
|
|
2149
|
|
|
2150 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2151 tf->persistent, tf->clean, tf->access)
|
|
|
2152 != NGX_OK)
|
|
|
2153 {
|
|
|
2154 return;
|
|
|
2155 }
|
|
|
2156
|
|
|
2157 u->pipe->temp_file = tf;
|
|
|
2158 }
|
|
|
2159
|
|
358
|
2160 temp = &tf->file.name;
|
|
318
|
2161
|
|
|
2162 #if !(NGX_WIN32)
|
|
|
2163
|
|
320
|
2164 if (ngx_change_file_access(temp->data, u->conf->store_access)
|
|
|
2165 == NGX_FILE_ERROR)
|
|
|
2166 {
|
|
318
|
2167 err = ngx_errno;
|
|
|
2168 failed = ngx_change_file_access_n;
|
|
|
2169 name = temp->data;
|
|
|
2170
|
|
|
2171 goto failed;
|
|
|
2172 }
|
|
|
2173
|
|
|
2174 #endif
|
|
|
2175
|
|
356
|
2176 if (u->headers_in.last_modified) {
|
|
|
2177
|
|
|
2178 last_modified = &u->headers_in.last_modified->value;
|
|
318
|
2179
|
|
|
2180 lm = ngx_http_parse_time(last_modified->data, last_modified->len);
|
|
|
2181
|
|
|
2182 if (lm != NGX_ERROR) {
|
|
358
|
2183 if (ngx_set_file_time(temp->data, tf->file.fd, lm) != NGX_OK) {
|
|
318
|
2184 err = ngx_errno;
|
|
|
2185 failed = ngx_set_file_time_n;
|
|
|
2186 name = temp->data;
|
|
320
|
2187
|
|
318
|
2188 goto failed;
|
|
|
2189 }
|
|
|
2190 }
|
|
|
2191 }
|
|
|
2192
|
|
320
|
2193 if (u->conf->store_lengths == NULL) {
|
|
|
2194
|
|
|
2195 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2196
|
|
|
2197 } else {
|
|
|
2198 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2199 u->conf->store_values->elts)
|
|
|
2200 == NULL)
|
|
|
2201 {
|
|
|
2202 return;
|
|
|
2203 }
|
|
|
2204 }
|
|
318
|
2205
|
|
|
2206 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2207 "upstream stores \"%s\" to \"%s\"", temp->data, path.data);
|
|
|
2208
|
|
|
2209 failed = ngx_rename_file_n;
|
|
|
2210 name = path.data;
|
|
|
2211
|
|
|
2212 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2213 return;
|
|
|
2214 }
|
|
|
2215
|
|
|
2216 err = ngx_errno;
|
|
|
2217
|
|
|
2218 if (err == NGX_ENOENT) {
|
|
|
2219
|
|
320
|
2220 err = ngx_create_full_path(path.data,
|
|
|
2221 ngx_dir_access(u->conf->store_access));
|
|
318
|
2222 if (err == 0) {
|
|
|
2223 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2224 return;
|
|
|
2225 }
|
|
|
2226
|
|
|
2227 err = ngx_errno;
|
|
|
2228 }
|
|
|
2229 }
|
|
|
2230
|
|
|
2231 #if (NGX_WIN32)
|
|
|
2232
|
|
|
2233 if (err == NGX_EEXIST) {
|
|
356
|
2234 if (ngx_win32_rename_file(temp, &path, r->connection->log) == NGX_OK) {
|
|
318
|
2235
|
|
|
2236 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2237 return;
|
|
|
2238 }
|
|
|
2239 }
|
|
|
2240
|
|
|
2241 err = ngx_errno;
|
|
|
2242 }
|
|
|
2243
|
|
|
2244 #endif
|
|
|
2245
|
|
|
2246 failed:
|
|
|
2247
|
|
|
2248 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
|
|
|
2249 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2250 ngx_delete_file_n " \"%s\" failed",
|
|
|
2251 temp->data);
|
|
|
2252 }
|
|
|
2253
|
|
|
2254 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
|
|
|
2255 "%s \"%s\" failed", failed, name);
|
|
|
2256 }
|
|
|
2257
|
|
|
2258
|
|
|
2259 static void
|
|
36
|
2260 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2261 {
|
|
|
2262 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2263 "http upstream dummy handler");
|
|
|
2264 }
|
|
|
2265
|
|
|
2266
|
|
36
|
2267 static void
|
|
|
2268 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2269 ngx_uint_t ft_type)
|
|
28
|
2270 {
|
|
260
|
2271 ngx_uint_t status, state;
|
|
28
|
2272
|
|
|
2273 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2274 "http next upstream, %xi", ft_type);
|
|
28
|
2275
|
|
|
2276 #if 0
|
|
|
2277 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2278 #endif
|
|
|
2279
|
|
74
|
2280 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2281 state = NGX_PEER_NEXT;
|
|
74
|
2282 } else {
|
|
260
|
2283 state = NGX_PEER_FAILED;
|
|
28
|
2284 }
|
|
74
|
2285
|
|
326
|
2286 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2287 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2288 }
|
|
74
|
2289
|
|
28
|
2290 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2291 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2292 "upstream timed out");
|
|
|
2293 }
|
|
126
|
2294
|
|
28
|
2295 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2296 status = 0;
|
|
|
2297
|
|
|
2298 } else {
|
|
|
2299 switch(ft_type) {
|
|
|
2300
|
|
|
2301 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2302 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2303 break;
|
|
|
2304
|
|
|
2305 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2306 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2307 break;
|
|
|
2308
|
|
|
2309 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2310 status = NGX_HTTP_NOT_FOUND;
|
|
|
2311 break;
|
|
|
2312
|
|
|
2313 /*
|
|
|
2314 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2315 * never reach here
|
|
|
2316 */
|
|
|
2317
|
|
|
2318 default:
|
|
|
2319 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2320 }
|
|
|
2321 }
|
|
|
2322
|
|
132
|
2323 if (r->connection->error) {
|
|
28
|
2324 ngx_http_upstream_finalize_request(r, u,
|
|
|
2325 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2326 return;
|
|
|
2327 }
|
|
|
2328
|
|
|
2329 if (status) {
|
|
|
2330 u->state->status = status;
|
|
|
2331
|
|
74
|
2332 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2333
|
|
|
2334 #if (NGX_HTTP_CACHE)
|
|
|
2335
|
|
|
2336 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2337 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2338 ngx_http_send_cached_response(r));
|
|
28
|
2339 return;
|
|
|
2340 }
|
|
|
2341
|
|
|
2342 #endif
|
|
|
2343
|
|
|
2344 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2345 return;
|
|
|
2346 }
|
|
|
2347 }
|
|
|
2348
|
|
|
2349 if (u->peer.connection) {
|
|
|
2350 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2351 "close http upstream connection: %d",
|
|
|
2352 u->peer.connection->fd);
|
|
126
|
2353 #if (NGX_HTTP_SSL)
|
|
260
|
2354
|
|
126
|
2355 if (u->peer.connection->ssl) {
|
|
260
|
2356 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2357 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2358
|
|
|
2359 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2360 }
|
|
|
2361 #endif
|
|
260
|
2362
|
|
28
|
2363 ngx_close_connection(u->peer.connection);
|
|
|
2364 }
|
|
|
2365
|
|
|
2366 #if 0
|
|
|
2367 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2368 ngx_http_upstream_busy_lock(p);
|
|
|
2369 return;
|
|
|
2370 }
|
|
|
2371 #endif
|
|
|
2372
|
|
|
2373 ngx_http_upstream_connect(r, u);
|
|
|
2374 }
|
|
|
2375
|
|
|
2376
|
|
36
|
2377 static void
|
|
118
|
2378 ngx_http_upstream_cleanup(void *data)
|
|
|
2379 {
|
|
|
2380 ngx_http_request_t *r = data;
|
|
|
2381
|
|
356
|
2382 ngx_http_upstream_t *u;
|
|
|
2383
|
|
118
|
2384 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2385 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2386
|
|
356
|
2387 u = r->upstream;
|
|
|
2388
|
|
|
2389 if (u->resolved && u->resolved->ctx) {
|
|
|
2390 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2391 }
|
|
|
2392
|
|
356
|
2393 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2394 }
|
|
|
2395
|
|
|
2396
|
|
|
2397 static void
|
|
36
|
2398 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2399 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2400 {
|
|
262
|
2401 ngx_time_t *tp;
|
|
112
|
2402
|
|
32
|
2403 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2404 "finalize http upstream request: %i", rc);
|
|
28
|
2405
|
|
118
|
2406 *u->cleanup = NULL;
|
|
|
2407
|
|
348
|
2408 if (u->state && u->state->response_sec) {
|
|
112
|
2409 tp = ngx_timeofday();
|
|
262
|
2410 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2411 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2412 }
|
|
|
2413
|
|
28
|
2414 u->finalize_request(r, rc);
|
|
|
2415
|
|
348
|
2416 if (u->peer.free) {
|
|
|
2417 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2418 }
|
|
260
|
2419
|
|
28
|
2420 if (u->peer.connection) {
|
|
260
|
2421
|
|
126
|
2422 #if (NGX_HTTP_SSL)
|
|
|
2423
|
|
|
2424 /* TODO: do not shutdown persistent connection */
|
|
|
2425
|
|
|
2426 if (u->peer.connection->ssl) {
|
|
260
|
2427
|
|
|
2428 /*
|
|
|
2429 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2430 * and do not wait its "close notify" shutdown alert.
|
|
|
2431 * It is acceptable according to the TLS standard.
|
|
|
2432 */
|
|
|
2433
|
|
|
2434 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2435
|
|
|
2436 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2437 }
|
|
|
2438 #endif
|
|
260
|
2439
|
|
|
2440 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2441 "close http upstream connection: %d",
|
|
|
2442 u->peer.connection->fd);
|
|
|
2443
|
|
28
|
2444 ngx_close_connection(u->peer.connection);
|
|
|
2445 }
|
|
|
2446
|
|
32
|
2447 u->peer.connection = NULL;
|
|
|
2448
|
|
112
|
2449 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2450 {
|
|
|
2451 rc = 0;
|
|
|
2452 }
|
|
|
2453
|
|
130
|
2454 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2455 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2456 "http upstream temp fd: %d",
|
|
130
|
2457 u->pipe->temp_file->file.fd);
|
|
28
|
2458 }
|
|
|
2459
|
|
|
2460 #if 0
|
|
|
2461 if (u->cache) {
|
|
|
2462 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2463 "http upstream cache fd: %d",
|
|
28
|
2464 u->cache->ctx.file.fd);
|
|
|
2465 }
|
|
|
2466 #endif
|
|
|
2467
|
|
64
|
2468 if (rc == NGX_DECLINED) {
|
|
|
2469 return;
|
|
|
2470 }
|
|
|
2471
|
|
32
|
2472 r->connection->log->action = "sending to client";
|
|
|
2473
|
|
314
|
2474 if (rc == 0) {
|
|
|
2475 if (r == r->main) {
|
|
|
2476 if (!r->post_action) {
|
|
|
2477 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
|
2478 }
|
|
|
2479
|
|
|
2480 } else {
|
|
|
2481 if (r->out) {
|
|
|
2482 rc = NGX_AGAIN;
|
|
|
2483 }
|
|
|
2484 }
|
|
28
|
2485 }
|
|
|
2486
|
|
|
2487 ngx_http_finalize_request(r, rc);
|
|
|
2488 }
|
|
|
2489
|
|
|
2490
|
|
58
|
2491 static ngx_int_t
|
|
|
2492 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2493 ngx_uint_t offset)
|
|
126
|
2494 {
|
|
58
|
2495 ngx_table_elt_t **ph;
|
|
126
|
2496
|
|
58
|
2497 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2498
|
|
|
2499 if (*ph == NULL) {
|
|
|
2500 *ph = h;
|
|
|
2501 }
|
|
|
2502
|
|
|
2503 return NGX_OK;
|
|
|
2504 }
|
|
|
2505
|
|
|
2506
|
|
|
2507 static ngx_int_t
|
|
|
2508 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2509 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2510 {
|
|
|
2511 ngx_array_t *pa;
|
|
|
2512 ngx_table_elt_t **ph;
|
|
|
2513
|
|
|
2514 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2515
|
|
|
2516 if (pa->elts == NULL) {
|
|
|
2517 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2518 {
|
|
|
2519 return NGX_ERROR;
|
|
|
2520 }
|
|
|
2521 }
|
|
|
2522
|
|
|
2523 ph = ngx_array_push(pa);
|
|
|
2524 if (ph == NULL) {
|
|
|
2525 return NGX_ERROR;
|
|
|
2526 }
|
|
|
2527
|
|
|
2528 *ph = h;
|
|
|
2529
|
|
|
2530 return NGX_OK;
|
|
|
2531 }
|
|
|
2532
|
|
|
2533
|
|
|
2534 static ngx_int_t
|
|
|
2535 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2536 ngx_uint_t offset)
|
|
|
2537 {
|
|
|
2538 return NGX_OK;
|
|
|
2539 }
|
|
|
2540
|
|
|
2541
|
|
|
2542 static ngx_int_t
|
|
76
|
2543 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2544 ngx_uint_t offset)
|
|
126
|
2545 {
|
|
76
|
2546 ngx_int_t n;
|
|
|
2547
|
|
|
2548 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2549
|
|
|
2550 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2551
|
|
|
2552 if (n != NGX_ERROR) {
|
|
|
2553 r->limit_rate = (size_t) n;
|
|
|
2554 }
|
|
|
2555
|
|
|
2556 return NGX_OK;
|
|
|
2557 }
|
|
|
2558
|
|
|
2559
|
|
|
2560 static ngx_int_t
|
|
198
|
2561 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2562 ngx_uint_t offset)
|
|
|
2563 {
|
|
|
2564 u_char c0, c1, c2;
|
|
|
2565
|
|
|
2566 if (r->upstream->conf->change_buffering) {
|
|
|
2567
|
|
|
2568 if (h->value.len == 2) {
|
|
|
2569 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2570 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2571
|
|
|
2572 if (c0 == 'n' && c1 == 'o') {
|
|
|
2573 r->upstream->buffering = 0;
|
|
|
2574 }
|
|
|
2575
|
|
|
2576 } else if (h->value.len == 3) {
|
|
|
2577 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2578 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2579 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2580
|
|
|
2581 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2582 r->upstream->buffering = 1;
|
|
|
2583 }
|
|
|
2584 }
|
|
|
2585 }
|
|
|
2586
|
|
|
2587 return NGX_OK;
|
|
|
2588 }
|
|
|
2589
|
|
|
2590
|
|
|
2591 static ngx_int_t
|
|
206
|
2592 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2593 ngx_uint_t offset)
|
|
|
2594 {
|
|
|
2595 r->headers_out.override_charset = &h->value;
|
|
|
2596
|
|
|
2597 return NGX_OK;
|
|
|
2598 }
|
|
|
2599
|
|
|
2600
|
|
|
2601 static ngx_int_t
|
|
58
|
2602 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2603 ngx_uint_t offset)
|
|
|
2604 {
|
|
122
|
2605 ngx_table_elt_t *ho, **ph;
|
|
58
|
2606
|
|
|
2607 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2608 if (ho == NULL) {
|
|
|
2609 return NGX_ERROR;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 *ho = *h;
|
|
|
2613
|
|
122
|
2614 if (offset) {
|
|
|
2615 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2616 *ph = ho;
|
|
|
2617 }
|
|
|
2618
|
|
58
|
2619 return NGX_OK;
|
|
|
2620 }
|
|
|
2621
|
|
|
2622
|
|
|
2623 static ngx_int_t
|
|
|
2624 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2625 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2626 {
|
|
|
2627 ngx_array_t *pa;
|
|
|
2628 ngx_table_elt_t *ho, **ph;
|
|
|
2629
|
|
|
2630 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2631
|
|
|
2632 if (pa->elts == NULL) {
|
|
|
2633 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2634 {
|
|
|
2635 return NGX_ERROR;
|
|
|
2636 }
|
|
|
2637 }
|
|
|
2638
|
|
|
2639 ph = ngx_array_push(pa);
|
|
|
2640 if (ph == NULL) {
|
|
|
2641 return NGX_ERROR;
|
|
|
2642 }
|
|
|
2643
|
|
|
2644 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2645 if (ho == NULL) {
|
|
|
2646 return NGX_ERROR;
|
|
|
2647 }
|
|
|
2648
|
|
|
2649 *ho = *h;
|
|
|
2650 *ph = ho;
|
|
|
2651
|
|
|
2652 return NGX_OK;
|
|
|
2653 }
|
|
|
2654
|
|
|
2655
|
|
|
2656 static ngx_int_t
|
|
|
2657 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2658 ngx_uint_t offset)
|
|
|
2659 {
|
|
206
|
2660 u_char *p, *last;
|
|
|
2661
|
|
|
2662 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2663 r->headers_out.content_type = h->value;
|
|
|
2664
|
|
206
|
2665 for (p = h->value.data; *p; p++) {
|
|
|
2666
|
|
|
2667 if (*p != ';') {
|
|
|
2668 continue;
|
|
|
2669 }
|
|
|
2670
|
|
|
2671 last = p;
|
|
|
2672
|
|
|
2673 while (*++p == ' ') { /* void */ }
|
|
|
2674
|
|
286
|
2675 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2676 continue;
|
|
|
2677 }
|
|
|
2678
|
|
|
2679 p += 8;
|
|
|
2680
|
|
|
2681 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2682
|
|
|
2683 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2684 r->headers_out.charset.data = p;
|
|
292
|
2685
|
|
|
2686 return NGX_OK;
|
|
206
|
2687 }
|
|
|
2688
|
|
58
|
2689 return NGX_OK;
|
|
|
2690 }
|
|
|
2691
|
|
|
2692
|
|
|
2693 static ngx_int_t
|
|
|
2694 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2695 ngx_uint_t offset)
|
|
|
2696 {
|
|
|
2697 ngx_table_elt_t *ho;
|
|
|
2698
|
|
|
2699 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2700 if (ho == NULL) {
|
|
|
2701 return NGX_ERROR;
|
|
|
2702 }
|
|
|
2703
|
|
|
2704 *ho = *h;
|
|
|
2705
|
|
|
2706 r->headers_out.content_length = ho;
|
|
|
2707 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2708
|
|
|
2709 return NGX_OK;
|
|
|
2710 }
|
|
|
2711
|
|
|
2712
|
|
|
2713 static ngx_int_t
|
|
|
2714 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2715 ngx_uint_t offset)
|
|
|
2716 {
|
|
|
2717 ngx_int_t rc;
|
|
|
2718 ngx_table_elt_t *ho;
|
|
|
2719
|
|
|
2720 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2721 if (ho == NULL) {
|
|
|
2722 return NGX_ERROR;
|
|
|
2723 }
|
|
|
2724
|
|
|
2725 *ho = *h;
|
|
|
2726
|
|
|
2727 if (r->upstream->rewrite_redirect) {
|
|
|
2728 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2729
|
|
78
|
2730 if (rc == NGX_DECLINED) {
|
|
|
2731 return NGX_OK;
|
|
|
2732 }
|
|
|
2733
|
|
58
|
2734 if (rc == NGX_OK) {
|
|
|
2735 r->headers_out.location = ho;
|
|
|
2736
|
|
|
2737 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2738 "rewritten location: \"%V\"", &ho->value);
|
|
|
2739 }
|
|
|
2740
|
|
|
2741 return rc;
|
|
|
2742 }
|
|
|
2743
|
|
348
|
2744 if (ho->value.data[0] != '/') {
|
|
|
2745 r->headers_out.location = ho;
|
|
|
2746 }
|
|
|
2747
|
|
58
|
2748 /*
|
|
|
2749 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2750 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2751 */
|
|
|
2752
|
|
|
2753 return NGX_OK;
|
|
|
2754 }
|
|
|
2755
|
|
|
2756
|
|
|
2757 static ngx_int_t
|
|
|
2758 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2759 ngx_uint_t offset)
|
|
|
2760 {
|
|
|
2761 u_char *p;
|
|
|
2762 ngx_int_t rc;
|
|
|
2763 ngx_table_elt_t *ho;
|
|
|
2764
|
|
|
2765 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2766 if (ho == NULL) {
|
|
|
2767 return NGX_ERROR;
|
|
|
2768 }
|
|
|
2769
|
|
|
2770 *ho = *h;
|
|
|
2771
|
|
|
2772 if (r->upstream->rewrite_redirect) {
|
|
|
2773
|
|
340
|
2774 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2775
|
|
|
2776 if (p) {
|
|
|
2777 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2778
|
|
|
2779 } else {
|
|
|
2780 return NGX_OK;
|
|
|
2781 }
|
|
|
2782
|
|
78
|
2783 if (rc == NGX_DECLINED) {
|
|
|
2784 return NGX_OK;
|
|
|
2785 }
|
|
|
2786
|
|
58
|
2787 if (rc == NGX_OK) {
|
|
348
|
2788 r->headers_out.refresh = ho;
|
|
|
2789
|
|
58
|
2790 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2791 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2792 }
|
|
|
2793
|
|
|
2794 return rc;
|
|
|
2795 }
|
|
|
2796
|
|
348
|
2797 r->headers_out.refresh = ho;
|
|
|
2798
|
|
58
|
2799 return NGX_OK;
|
|
|
2800 }
|
|
|
2801
|
|
|
2802
|
|
|
2803 #if (NGX_HTTP_GZIP)
|
|
|
2804
|
|
|
2805 static ngx_int_t
|
|
|
2806 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2807 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2808 {
|
|
|
2809 ngx_table_elt_t *ho;
|
|
|
2810
|
|
|
2811 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2812 if (ho == NULL) {
|
|
|
2813 return NGX_ERROR;
|
|
|
2814 }
|
|
|
2815
|
|
|
2816 *ho = *h;
|
|
|
2817
|
|
|
2818 r->headers_out.content_encoding = ho;
|
|
|
2819
|
|
|
2820 return NGX_OK;
|
|
|
2821 }
|
|
|
2822
|
|
|
2823 #endif
|
|
|
2824
|
|
|
2825
|
|
36
|
2826 static ngx_int_t
|
|
122
|
2827 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2828 {
|
|
260
|
2829 ngx_http_variable_t *var, *v;
|
|
28
|
2830
|
|
122
|
2831 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2832 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2833 if (var == NULL) {
|
|
|
2834 return NGX_ERROR;
|
|
|
2835 }
|
|
|
2836
|
|
186
|
2837 var->get_handler = v->get_handler;
|
|
122
|
2838 var->data = v->data;
|
|
|
2839 }
|
|
|
2840
|
|
28
|
2841 return NGX_OK;
|
|
|
2842 }
|
|
58
|
2843
|
|
|
2844
|
|
122
|
2845 static ngx_int_t
|
|
298
|
2846 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2847 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2848 {
|
|
|
2849 u_char *p;
|
|
|
2850 size_t len;
|
|
|
2851 ngx_uint_t i;
|
|
|
2852 ngx_http_upstream_state_t *state;
|
|
|
2853
|
|
|
2854 v->valid = 1;
|
|
340
|
2855 v->no_cacheable = 0;
|
|
298
|
2856 v->not_found = 0;
|
|
|
2857
|
|
|
2858 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2859 v->not_found = 1;
|
|
|
2860 return NGX_OK;
|
|
|
2861 }
|
|
|
2862
|
|
|
2863 len = 0;
|
|
|
2864 state = r->upstream_states->elts;
|
|
|
2865
|
|
|
2866 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2867 if (state[i].peer) {
|
|
|
2868 len += state[i].peer->len + 2;
|
|
|
2869
|
|
|
2870 } else {
|
|
|
2871 len += 3;
|
|
|
2872 }
|
|
|
2873 }
|
|
|
2874
|
|
|
2875 p = ngx_palloc(r->pool, len);
|
|
|
2876 if (p == NULL) {
|
|
|
2877 return NGX_ERROR;
|
|
|
2878 }
|
|
|
2879
|
|
|
2880 v->data = p;
|
|
|
2881
|
|
|
2882 i = 0;
|
|
|
2883
|
|
|
2884 for ( ;; ) {
|
|
|
2885 if (state[i].peer) {
|
|
|
2886 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2887 }
|
|
|
2888
|
|
|
2889 if (++i == r->upstream_states->nelts) {
|
|
|
2890 break;
|
|
|
2891 }
|
|
|
2892
|
|
|
2893 if (state[i].peer) {
|
|
|
2894 *p++ = ',';
|
|
|
2895 *p++ = ' ';
|
|
|
2896
|
|
|
2897 } else {
|
|
|
2898 *p++ = ' ';
|
|
|
2899 *p++ = ':';
|
|
|
2900 *p++ = ' ';
|
|
|
2901
|
|
|
2902 if (++i == r->upstream_states->nelts) {
|
|
|
2903 break;
|
|
|
2904 }
|
|
|
2905
|
|
|
2906 continue;
|
|
|
2907 }
|
|
|
2908 }
|
|
|
2909
|
|
|
2910 v->len = p - v->data;
|
|
|
2911
|
|
|
2912 return NGX_OK;
|
|
|
2913 }
|
|
|
2914
|
|
|
2915
|
|
|
2916 static ngx_int_t
|
|
122
|
2917 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2918 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2919 {
|
|
|
2920 u_char *p;
|
|
|
2921 size_t len;
|
|
|
2922 ngx_uint_t i;
|
|
|
2923 ngx_http_upstream_state_t *state;
|
|
|
2924
|
|
|
2925 v->valid = 1;
|
|
340
|
2926 v->no_cacheable = 0;
|
|
122
|
2927 v->not_found = 0;
|
|
|
2928
|
|
296
|
2929 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2930 v->not_found = 1;
|
|
|
2931 return NGX_OK;
|
|
|
2932 }
|
|
|
2933
|
|
296
|
2934 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2935
|
|
|
2936 p = ngx_palloc(r->pool, len);
|
|
|
2937 if (p == NULL) {
|
|
|
2938 return NGX_ERROR;
|
|
|
2939 }
|
|
|
2940
|
|
|
2941 v->data = p;
|
|
|
2942
|
|
|
2943 i = 0;
|
|
296
|
2944 state = r->upstream_states->elts;
|
|
122
|
2945
|
|
|
2946 for ( ;; ) {
|
|
296
|
2947 if (state[i].status) {
|
|
|
2948 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2949
|
|
|
2950 } else {
|
|
296
|
2951 *p++ = '-';
|
|
122
|
2952 }
|
|
|
2953
|
|
296
|
2954 if (++i == r->upstream_states->nelts) {
|
|
122
|
2955 break;
|
|
|
2956 }
|
|
|
2957
|
|
296
|
2958 if (state[i].peer) {
|
|
|
2959 *p++ = ',';
|
|
|
2960 *p++ = ' ';
|
|
|
2961
|
|
|
2962 } else {
|
|
|
2963 *p++ = ' ';
|
|
|
2964 *p++ = ':';
|
|
|
2965 *p++ = ' ';
|
|
|
2966
|
|
|
2967 if (++i == r->upstream_states->nelts) {
|
|
|
2968 break;
|
|
|
2969 }
|
|
|
2970
|
|
|
2971 continue;
|
|
|
2972 }
|
|
122
|
2973 }
|
|
|
2974
|
|
|
2975 v->len = p - v->data;
|
|
|
2976
|
|
|
2977 return NGX_OK;
|
|
|
2978 }
|
|
|
2979
|
|
|
2980
|
|
|
2981 static ngx_int_t
|
|
|
2982 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2983 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2984 {
|
|
|
2985 u_char *p;
|
|
|
2986 size_t len;
|
|
|
2987 ngx_uint_t i;
|
|
262
|
2988 ngx_msec_int_t ms;
|
|
122
|
2989 ngx_http_upstream_state_t *state;
|
|
|
2990
|
|
|
2991 v->valid = 1;
|
|
340
|
2992 v->no_cacheable = 0;
|
|
122
|
2993 v->not_found = 0;
|
|
|
2994
|
|
296
|
2995 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2996 v->not_found = 1;
|
|
|
2997 return NGX_OK;
|
|
|
2998 }
|
|
|
2999
|
|
296
|
3000 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3001
|
|
|
3002 p = ngx_palloc(r->pool, len);
|
|
|
3003 if (p == NULL) {
|
|
|
3004 return NGX_ERROR;
|
|
|
3005 }
|
|
|
3006
|
|
|
3007 v->data = p;
|
|
|
3008
|
|
|
3009 i = 0;
|
|
296
|
3010 state = r->upstream_states->elts;
|
|
122
|
3011
|
|
|
3012 for ( ;; ) {
|
|
296
|
3013 if (state[i].status) {
|
|
346
|
3014 ms = (ngx_msec_int_t)
|
|
|
3015 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3016 ms = (ms >= 0) ? ms : 0;
|
|
|
3017 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3018
|
|
|
3019 } else {
|
|
|
3020 *p++ = '-';
|
|
122
|
3021 }
|
|
|
3022
|
|
296
|
3023 if (++i == r->upstream_states->nelts) {
|
|
122
|
3024 break;
|
|
|
3025 }
|
|
|
3026
|
|
296
|
3027 if (state[i].peer) {
|
|
|
3028 *p++ = ',';
|
|
|
3029 *p++ = ' ';
|
|
|
3030
|
|
|
3031 } else {
|
|
|
3032 *p++ = ' ';
|
|
|
3033 *p++ = ':';
|
|
|
3034 *p++ = ' ';
|
|
|
3035
|
|
|
3036 if (++i == r->upstream_states->nelts) {
|
|
|
3037 break;
|
|
|
3038 }
|
|
|
3039
|
|
|
3040 continue;
|
|
|
3041 }
|
|
122
|
3042 }
|
|
|
3043
|
|
|
3044 v->len = p - v->data;
|
|
|
3045
|
|
|
3046 return NGX_OK;
|
|
|
3047 }
|
|
|
3048
|
|
|
3049
|
|
296
|
3050 ngx_int_t
|
|
|
3051 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3052 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3053 {
|
|
|
3054 if (r->upstream == NULL) {
|
|
|
3055 v->not_found = 1;
|
|
|
3056 return NGX_OK;
|
|
|
3057 }
|
|
|
3058
|
|
|
3059 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3060 &r->upstream->headers_in.headers.part,
|
|
|
3061 sizeof("upstream_http_") - 1);
|
|
|
3062 }
|
|
|
3063
|
|
|
3064
|
|
200
|
3065 static char *
|
|
|
3066 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3067 {
|
|
260
|
3068 char *rv;
|
|
|
3069 void *mconf;
|
|
|
3070 ngx_str_t *value;
|
|
|
3071 ngx_url_t u;
|
|
|
3072 ngx_uint_t m;
|
|
|
3073 ngx_conf_t pcf;
|
|
|
3074 ngx_http_module_t *module;
|
|
|
3075 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3076 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3077
|
|
|
3078 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3079
|
|
|
3080 value = cf->args->elts;
|
|
|
3081 u.host = value[1];
|
|
|
3082 u.no_resolve = 1;
|
|
|
3083
|
|
|
3084 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3085 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3086 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3087 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3088 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3089 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3090 if (uscf == NULL) {
|
|
|
3091 return NGX_CONF_ERROR;
|
|
|
3092 }
|
|
|
3093
|
|
200
|
3094
|
|
|
3095 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3096 if (ctx == NULL) {
|
|
|
3097 return NGX_CONF_ERROR;
|
|
|
3098 }
|
|
|
3099
|
|
260
|
3100 http_ctx = cf->ctx;
|
|
|
3101 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3102
|
|
|
3103 /* the upstream{}'s srv_conf */
|
|
|
3104
|
|
|
3105 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3106 if (ctx->srv_conf == NULL) {
|
|
|
3107 return NGX_CONF_ERROR;
|
|
|
3108 }
|
|
|
3109
|
|
|
3110 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3111
|
|
260
|
3112 uscf->srv_conf = ctx->srv_conf;
|
|
|
3113
|
|
200
|
3114
|
|
|
3115 /* the upstream{}'s loc_conf */
|
|
|
3116
|
|
|
3117 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3118 if (ctx->loc_conf == NULL) {
|
|
|
3119 return NGX_CONF_ERROR;
|
|
|
3120 }
|
|
|
3121
|
|
|
3122 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3123 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3124 continue;
|
|
|
3125 }
|
|
|
3126
|
|
|
3127 module = ngx_modules[m]->ctx;
|
|
|
3128
|
|
260
|
3129 if (module->create_srv_conf) {
|
|
|
3130 mconf = module->create_srv_conf(cf);
|
|
|
3131 if (mconf == NULL) {
|
|
|
3132 return NGX_CONF_ERROR;
|
|
|
3133 }
|
|
|
3134
|
|
|
3135 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3136 }
|
|
|
3137
|
|
200
|
3138 if (module->create_loc_conf) {
|
|
|
3139 mconf = module->create_loc_conf(cf);
|
|
|
3140 if (mconf == NULL) {
|
|
|
3141 return NGX_CONF_ERROR;
|
|
|
3142 }
|
|
|
3143
|
|
|
3144 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3145 }
|
|
|
3146 }
|
|
|
3147
|
|
|
3148
|
|
|
3149 /* parse inside upstream{} */
|
|
|
3150
|
|
|
3151 pcf = *cf;
|
|
|
3152 cf->ctx = ctx;
|
|
|
3153 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3154
|
|
|
3155 rv = ngx_conf_parse(cf, NULL);
|
|
|
3156
|
|
|
3157 *cf = pcf;
|
|
|
3158
|
|
|
3159 if (rv != NGX_CONF_OK) {
|
|
|
3160 return rv;
|
|
|
3161 }
|
|
|
3162
|
|
|
3163 if (uscf->servers == NULL) {
|
|
|
3164 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3165 "no servers are inside upstream");
|
|
|
3166 return NGX_CONF_ERROR;
|
|
|
3167 }
|
|
|
3168
|
|
|
3169 return rv;
|
|
|
3170 }
|
|
|
3171
|
|
|
3172
|
|
|
3173 static char *
|
|
|
3174 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3175 {
|
|
|
3176 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3177
|
|
260
|
3178 time_t fail_timeout;
|
|
|
3179 ngx_str_t *value, s;
|
|
|
3180 ngx_url_t u;
|
|
|
3181 ngx_int_t weight, max_fails;
|
|
|
3182 ngx_uint_t i;
|
|
|
3183 ngx_http_upstream_server_t *us;
|
|
200
|
3184
|
|
|
3185 if (uscf->servers == NULL) {
|
|
260
|
3186 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3187 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3188 if (uscf->servers == NULL) {
|
|
|
3189 return NGX_CONF_ERROR;
|
|
|
3190 }
|
|
|
3191 }
|
|
|
3192
|
|
260
|
3193 us = ngx_array_push(uscf->servers);
|
|
|
3194 if (us == NULL) {
|
|
200
|
3195 return NGX_CONF_ERROR;
|
|
|
3196 }
|
|
|
3197
|
|
260
|
3198 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3199
|
|
200
|
3200 value = cf->args->elts;
|
|
|
3201
|
|
|
3202 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3203
|
|
|
3204 u.url = value[1];
|
|
266
|
3205 u.default_port = 80;
|
|
200
|
3206
|
|
340
|
3207 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3208 if (u.err) {
|
|
|
3209 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3210 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3211 }
|
|
|
3212
|
|
|
3213 return NGX_CONF_ERROR;
|
|
|
3214 }
|
|
|
3215
|
|
212
|
3216 weight = 1;
|
|
260
|
3217 max_fails = 1;
|
|
|
3218 fail_timeout = 10;
|
|
|
3219
|
|
|
3220 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3221
|
|
|
3222 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3223
|
|
|
3224 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3225 goto invalid;
|
|
|
3226 }
|
|
|
3227
|
|
|
3228 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3229
|
|
|
3230 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3231 goto invalid;
|
|
|
3232 }
|
|
|
3233
|
|
260
|
3234 continue;
|
|
|
3235 }
|
|
|
3236
|
|
|
3237 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3238
|
|
|
3239 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3240 goto invalid;
|
|
|
3241 }
|
|
|
3242
|
|
|
3243 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3244
|
|
|
3245 if (max_fails == NGX_ERROR) {
|
|
|
3246 goto invalid;
|
|
|
3247 }
|
|
|
3248
|
|
|
3249 continue;
|
|
212
|
3250 }
|
|
260
|
3251
|
|
|
3252 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3253
|
|
|
3254 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3255 goto invalid;
|
|
|
3256 }
|
|
|
3257
|
|
|
3258 s.len = value[i].len - 13;
|
|
|
3259 s.data = &value[i].data[13];
|
|
|
3260
|
|
|
3261 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3262
|
|
|
3263 if (fail_timeout < 0) {
|
|
|
3264 goto invalid;
|
|
|
3265 }
|
|
|
3266
|
|
|
3267 continue;
|
|
|
3268 }
|
|
|
3269
|
|
326
|
3270 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3271
|
|
|
3272 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3273 goto invalid;
|
|
|
3274 }
|
|
|
3275
|
|
|
3276 us->backup = 1;
|
|
|
3277
|
|
|
3278 continue;
|
|
|
3279 }
|
|
|
3280
|
|
260
|
3281 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3282
|
|
|
3283 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3284 goto invalid;
|
|
|
3285 }
|
|
|
3286
|
|
|
3287 us->down = 1;
|
|
|
3288
|
|
|
3289 continue;
|
|
|
3290 }
|
|
|
3291
|
|
|
3292 goto invalid;
|
|
212
|
3293 }
|
|
|
3294
|
|
260
|
3295 us->addrs = u.addrs;
|
|
|
3296 us->naddrs = u.naddrs;
|
|
|
3297 us->weight = weight;
|
|
|
3298 us->max_fails = max_fails;
|
|
|
3299 us->fail_timeout = fail_timeout;
|
|
200
|
3300
|
|
|
3301 return NGX_CONF_OK;
|
|
212
|
3302
|
|
|
3303 invalid:
|
|
|
3304
|
|
260
|
3305 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3306 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3307
|
|
|
3308 return NGX_CONF_ERROR;
|
|
200
|
3309 }
|
|
|
3310
|
|
|
3311
|
|
|
3312 ngx_http_upstream_srv_conf_t *
|
|
260
|
3313 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3314 {
|
|
|
3315 ngx_uint_t i;
|
|
260
|
3316 ngx_http_upstream_server_t *us;
|
|
200
|
3317 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3318 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3319
|
|
260
|
3320 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3321
|
|
340
|
3322 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3323 if (u->err) {
|
|
|
3324 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3325 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3326 }
|
|
|
3327
|
|
|
3328 return NULL;
|
|
|
3329 }
|
|
|
3330 }
|
|
|
3331
|
|
|
3332 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3333
|
|
|
3334 uscfp = umcf->upstreams.elts;
|
|
|
3335
|
|
|
3336 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3337
|
|
|
3338 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3339 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3340 != 0)
|
|
|
3341 {
|
|
200
|
3342 continue;
|
|
|
3343 }
|
|
|
3344
|
|
260
|
3345 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3346 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3347 {
|
|
260
|
3348 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3349 "duplicate upstream \"%V\"", &u->host);
|
|
|
3350 return NULL;
|
|
200
|
3351 }
|
|
260
|
3352
|
|
266
|
3353 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3354 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3355 "upstream \"%V\" may not have port %d",
|
|
|
3356 &u->host, u->port);
|
|
|
3357 return NULL;
|
|
|
3358 }
|
|
|
3359
|
|
|
3360 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3361 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3362 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3363 &u->host, uscfp[i]->port,
|
|
336
|
3364 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3365 return NULL;
|
|
|
3366 }
|
|
|
3367
|
|
|
3368 if (uscfp[i]->port != u->port) {
|
|
|
3369 continue;
|
|
260
|
3370 }
|
|
|
3371
|
|
324
|
3372 if (uscfp[i]->default_port && u->default_port
|
|
|
3373 && uscfp[i]->default_port != u->default_port)
|
|
|
3374 {
|
|
|
3375 continue;
|
|
|
3376 }
|
|
|
3377
|
|
260
|
3378 return uscfp[i];
|
|
200
|
3379 }
|
|
|
3380
|
|
|
3381 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3382 if (uscf == NULL) {
|
|
|
3383 return NULL;
|
|
|
3384 }
|
|
|
3385
|
|
260
|
3386 uscf->flags = flags;
|
|
200
|
3387 uscf->host = u->host;
|
|
336
|
3388 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3389 uscf->line = cf->conf_file->line;
|
|
266
|
3390 uscf->port = u->port;
|
|
|
3391 uscf->default_port = u->default_port;
|
|
260
|
3392
|
|
|
3393 if (u->naddrs == 1) {
|
|
|
3394 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3395 sizeof(ngx_http_upstream_server_t));
|
|
|
3396 if (uscf->servers == NULL) {
|
|
|
3397 return NGX_CONF_ERROR;
|
|
|
3398 }
|
|
|
3399
|
|
|
3400 us = ngx_array_push(uscf->servers);
|
|
|
3401 if (us == NULL) {
|
|
|
3402 return NGX_CONF_ERROR;
|
|
|
3403 }
|
|
|
3404
|
|
|
3405 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3406
|
|
|
3407 us->addrs = u->addrs;
|
|
|
3408 us->naddrs = u->naddrs;
|
|
|
3409 }
|
|
200
|
3410
|
|
|
3411 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3412 if (uscfp == NULL) {
|
|
|
3413 return NULL;
|
|
|
3414 }
|
|
|
3415
|
|
|
3416 *uscfp = uscf;
|
|
|
3417
|
|
|
3418 return uscf;
|
|
|
3419 }
|
|
|
3420
|
|
|
3421
|
|
356
|
3422 ngx_int_t
|
|
|
3423 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3424 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3425 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3426 {
|
|
|
3427 ngx_str_t *h;
|
|
|
3428 ngx_uint_t i, j;
|
|
|
3429 ngx_array_t hide_headers;
|
|
|
3430 ngx_hash_key_t *hk;
|
|
|
3431
|
|
|
3432 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3433 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3434 {
|
|
|
3435 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3436
|
|
|
3437 if (conf->hide_headers_hash.buckets) {
|
|
|
3438 return NGX_OK;
|
|
|
3439 }
|
|
|
3440
|
|
|
3441 conf->hide_headers = prev->hide_headers;
|
|
|
3442 conf->pass_headers = prev->pass_headers;
|
|
|
3443
|
|
|
3444 } else {
|
|
|
3445 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3446 conf->hide_headers = prev->hide_headers;
|
|
|
3447 }
|
|
|
3448
|
|
|
3449 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3450 conf->pass_headers = prev->pass_headers;
|
|
|
3451 }
|
|
|
3452 }
|
|
|
3453
|
|
|
3454 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3455 != NGX_OK)
|
|
|
3456 {
|
|
|
3457 return NGX_ERROR;
|
|
|
3458 }
|
|
|
3459
|
|
|
3460 for (h = default_hide_headers; h->len; h++) {
|
|
|
3461 hk = ngx_array_push(&hide_headers);
|
|
|
3462 if (hk == NULL) {
|
|
|
3463 return NGX_ERROR;
|
|
|
3464 }
|
|
|
3465
|
|
|
3466 hk->key = *h;
|
|
|
3467 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3468 hk->value = (void *) 1;
|
|
|
3469 }
|
|
|
3470
|
|
|
3471 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3472
|
|
|
3473 h = conf->hide_headers->elts;
|
|
|
3474
|
|
|
3475 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3476
|
|
|
3477 hk = hide_headers.elts;
|
|
|
3478
|
|
|
3479 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3480 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3481 goto exist;
|
|
|
3482 }
|
|
|
3483 }
|
|
|
3484
|
|
|
3485 hk = ngx_array_push(&hide_headers);
|
|
|
3486 if (hk == NULL) {
|
|
|
3487 return NGX_ERROR;
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 hk->key = h[i];
|
|
|
3491 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3492 hk->value = (void *) 1;
|
|
|
3493
|
|
|
3494 exist:
|
|
|
3495
|
|
|
3496 continue;
|
|
|
3497 }
|
|
|
3498 }
|
|
|
3499
|
|
|
3500 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3501
|
|
|
3502 h = conf->pass_headers->elts;
|
|
|
3503 hk = hide_headers.elts;
|
|
|
3504
|
|
|
3505 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3506 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3507
|
|
|
3508 if (hk[j].key.data == NULL) {
|
|
|
3509 continue;
|
|
|
3510 }
|
|
|
3511
|
|
|
3512 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3513 hk[j].key.data = NULL;
|
|
|
3514 break;
|
|
|
3515 }
|
|
|
3516 }
|
|
|
3517 }
|
|
|
3518 }
|
|
|
3519
|
|
|
3520 hash->hash = &conf->hide_headers_hash;
|
|
|
3521 hash->key = ngx_hash_key_lc;
|
|
|
3522 hash->pool = cf->pool;
|
|
|
3523 hash->temp_pool = NULL;
|
|
|
3524
|
|
|
3525 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3526 }
|
|
|
3527
|
|
|
3528
|
|
58
|
3529 static void *
|
|
|
3530 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3531 {
|
|
|
3532 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3533
|
|
|
3534 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3535 if (umcf == NULL) {
|
|
|
3536 return NULL;
|
|
|
3537 }
|
|
|
3538
|
|
200
|
3539 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3540 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3541 != NGX_OK)
|
|
|
3542 {
|
|
|
3543 return NGX_CONF_ERROR;
|
|
|
3544 }
|
|
|
3545
|
|
58
|
3546 return umcf;
|
|
|
3547 }
|
|
|
3548
|
|
|
3549
|
|
|
3550 static char *
|
|
200
|
3551 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3552 {
|
|
|
3553 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3554
|
|
200
|
3555 ngx_uint_t i;
|
|
|
3556 ngx_array_t headers_in;
|
|
|
3557 ngx_hash_key_t *hk;
|
|
|
3558 ngx_hash_init_t hash;
|
|
260
|
3559 ngx_http_upstream_init_pt init;
|
|
200
|
3560 ngx_http_upstream_header_t *header;
|
|
|
3561 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3562
|
|
|
3563 uscfp = umcf->upstreams.elts;
|
|
|
3564
|
|
|
3565 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3566
|
|
|
3567 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3568 ngx_http_upstream_init_round_robin;
|
|
|
3569
|
|
|
3570 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3571 return NGX_CONF_ERROR;
|
|
|
3572 }
|
|
|
3573 }
|
|
198
|
3574
|
|
212
|
3575
|
|
260
|
3576 /* upstream_headers_in_hash */
|
|
|
3577
|
|
198
|
3578 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3579 != NGX_OK)
|
|
58
|
3580 {
|
|
|
3581 return NGX_CONF_ERROR;
|
|
|
3582 }
|
|
|
3583
|
|
198
|
3584 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3585 hk = ngx_array_push(&headers_in);
|
|
|
3586 if (hk == NULL) {
|
|
|
3587 return NGX_CONF_ERROR;
|
|
|
3588 }
|
|
|
3589
|
|
|
3590 hk->key = header->name;
|
|
|
3591 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3592 hk->value = header;
|
|
|
3593 }
|
|
|
3594
|
|
|
3595 hash.hash = &umcf->headers_in_hash;
|
|
|
3596 hash.key = ngx_hash_key_lc;
|
|
|
3597 hash.max_size = 512;
|
|
244
|
3598 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3599 hash.name = "upstream_headers_in_hash";
|
|
|
3600 hash.pool = cf->pool;
|
|
|
3601 hash.temp_pool = NULL;
|
|
|
3602
|
|
|
3603 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3604 return NGX_CONF_ERROR;
|
|
|
3605 }
|
|
58
|
3606
|
|
|
3607 return NGX_CONF_OK;
|
|
|
3608 }
|
