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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
|
|
|
384 host = &r->upstream->resolved->host;
|
|
|
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 if (clcf->resolver == NULL) {
|
|
|
402 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
403 "no resolver defined to resolve %V", host);
|
|
|
404 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
405 return;
|
|
|
406 }
|
|
|
407
|
|
|
408 temp.name = *host;
|
|
|
409
|
|
|
410 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
411 if (ctx == NULL) {
|
|
|
412 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
413 return;
|
|
|
414 }
|
|
|
415
|
|
|
416 ctx->name = *host;
|
|
|
417 ctx->type = NGX_RESOLVE_A;
|
|
|
418 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
419 ctx->data = r;
|
|
|
420 ctx->timeout = clcf->resolver_timeout;
|
|
|
421
|
|
|
422 u->resolved->ctx = ctx;
|
|
|
423
|
|
|
424 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
|
425 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
426 return;
|
|
|
427 }
|
|
|
428
|
|
|
429 return;
|
|
|
430 }
|
|
|
431
|
|
|
432 found:
|
|
|
433
|
|
|
434 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
435 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
436 return;
|
|
|
437 }
|
|
|
438
|
|
28
|
439 ngx_http_upstream_connect(r, u);
|
|
|
440 }
|
|
|
441
|
|
|
442
|
|
36
|
443 static void
|
|
348
|
444 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
445 {
|
|
|
446 ngx_http_request_t *r;
|
|
|
447 ngx_http_upstream_resolved_t *ur;
|
|
|
448
|
|
|
449 r = ctx->data;
|
|
|
450
|
|
|
451 r->upstream->resolved->ctx = NULL;
|
|
|
452
|
|
|
453 if (ctx->state) {
|
|
|
454 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
455 "%V could not be resolved (%i: %s)",
|
|
|
456 &ctx->name, ctx->state,
|
|
|
457 ngx_resolver_strerror(ctx->state));
|
|
|
458
|
|
|
459 ngx_resolve_name_done(ctx);
|
|
|
460 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
461 return;
|
|
|
462 }
|
|
|
463
|
|
|
464 ur = r->upstream->resolved;
|
|
|
465 ur->naddrs = ctx->naddrs;
|
|
|
466 ur->addrs = ctx->addrs;
|
|
|
467
|
|
|
468 #if (NGX_DEBUG)
|
|
|
469 {
|
|
|
470 in_addr_t addr;
|
|
|
471 ngx_uint_t i;
|
|
|
472
|
|
|
473 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
474 addr = ntohl(ur->addrs[i]);
|
|
|
475
|
|
|
476 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
477 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
478 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
479 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
480 }
|
|
|
481 }
|
|
|
482 #endif
|
|
|
483
|
|
|
484 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
485 ngx_resolve_name_done(ctx);
|
|
|
486 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
487 return;
|
|
|
488 }
|
|
|
489
|
|
|
490 ngx_resolve_name_done(ctx);
|
|
|
491
|
|
|
492 ngx_http_upstream_connect(r, r->upstream);
|
|
|
493 }
|
|
|
494
|
|
|
495
|
|
|
496 static void
|
|
58
|
497 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
498 {
|
|
|
499 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
500 }
|
|
|
501
|
|
|
502
|
|
|
503 static void
|
|
|
504 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
505 {
|
|
|
506 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
507 }
|
|
|
508
|
|
|
509
|
|
|
510 static void
|
|
|
511 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
512 ngx_event_t *ev)
|
|
28
|
513 {
|
|
|
514 int n;
|
|
|
515 char buf[1];
|
|
126
|
516 ngx_err_t err;
|
|
28
|
517 ngx_connection_t *c;
|
|
|
518 ngx_http_upstream_t *u;
|
|
|
519
|
|
76
|
520 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
521 "http upstream check client, write event:%d, \"%V\"",
|
|
|
522 ev->write, &r->uri);
|
|
28
|
523
|
|
58
|
524 c = r->connection;
|
|
32
|
525 u = r->upstream;
|
|
|
526
|
|
132
|
527 if (c->error) {
|
|
76
|
528 ngx_http_upstream_finalize_request(r, u,
|
|
|
529 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
530 return;
|
|
|
531 }
|
|
|
532
|
|
32
|
533 if (u->peer.connection == NULL) {
|
|
|
534 return;
|
|
|
535 }
|
|
|
536
|
|
28
|
537 #if (NGX_HAVE_KQUEUE)
|
|
|
538
|
|
|
539 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
540
|
|
|
541 if (!ev->pending_eof) {
|
|
|
542 return;
|
|
|
543 }
|
|
|
544
|
|
|
545 ev->eof = 1;
|
|
132
|
546 c->error = 1;
|
|
28
|
547
|
|
|
548 if (ev->kq_errno) {
|
|
|
549 ev->error = 1;
|
|
|
550 }
|
|
|
551
|
|
340
|
552 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
553 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
554 "kevent() reported that client closed prematurely "
|
|
|
555 "connection, so upstream connection is closed too");
|
|
28
|
556 ngx_http_upstream_finalize_request(r, u,
|
|
|
557 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
558 return;
|
|
|
559 }
|
|
|
560
|
|
|
561 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
562 "kevent() reported that client closed "
|
|
|
563 "prematurely connection");
|
|
|
564
|
|
|
565 if (u->peer.connection == NULL) {
|
|
|
566 ngx_http_upstream_finalize_request(r, u,
|
|
|
567 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
568 return;
|
|
|
569 }
|
|
|
570
|
|
|
571 return;
|
|
|
572 }
|
|
|
573
|
|
|
574 #endif
|
|
|
575
|
|
|
576 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
577
|
|
|
578 err = ngx_socket_errno;
|
|
|
579
|
|
286
|
580 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
581 "http upstream recv(): %d", n);
|
|
|
582
|
|
28
|
583 /*
|
|
|
584 * we do not need to disable the write event because
|
|
|
585 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
586 */
|
|
|
587
|
|
|
588 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
589 return;
|
|
|
590 }
|
|
|
591
|
|
|
592 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
593 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
594 ngx_http_upstream_finalize_request(r, u,
|
|
|
595 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
596 return;
|
|
|
597 }
|
|
|
598 }
|
|
|
599
|
|
|
600 if (n > 0) {
|
|
|
601 return;
|
|
|
602 }
|
|
|
603
|
|
|
604 if (n == -1) {
|
|
|
605 if (err == NGX_EAGAIN) {
|
|
|
606 return;
|
|
|
607 }
|
|
|
608
|
|
|
609 ev->error = 1;
|
|
|
610
|
|
32
|
611 } else { /* n == 0 */
|
|
28
|
612 err = 0;
|
|
|
613 }
|
|
|
614
|
|
78
|
615 ev->eof = 1;
|
|
132
|
616 c->error = 1;
|
|
78
|
617
|
|
340
|
618 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
619 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
620 "client closed prematurely connection, "
|
|
|
621 "so upstream connection is closed too");
|
|
|
622 ngx_http_upstream_finalize_request(r, u,
|
|
|
623 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
624 return;
|
|
|
625 }
|
|
|
626
|
|
|
627 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
628 "client closed prematurely connection");
|
|
|
629
|
|
|
630 if (u->peer.connection == NULL) {
|
|
|
631 ngx_http_upstream_finalize_request(r, u,
|
|
|
632 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
633 return;
|
|
|
634 }
|
|
|
635 }
|
|
|
636
|
|
|
637
|
|
36
|
638 static void
|
|
|
639 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
640 {
|
|
140
|
641 ngx_int_t rc;
|
|
214
|
642 ngx_time_t *tp;
|
|
140
|
643 ngx_connection_t *c;
|
|
28
|
644
|
|
32
|
645 r->connection->log->action = "connecting to upstream";
|
|
28
|
646
|
|
|
647 r->connection->single_connection = 0;
|
|
|
648
|
|
262
|
649 if (u->state && u->state->response_sec) {
|
|
214
|
650 tp = ngx_timeofday();
|
|
262
|
651 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
652 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
653 }
|
|
|
654
|
|
296
|
655 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
656 if (u->state == NULL) {
|
|
|
657 ngx_http_upstream_finalize_request(r, u,
|
|
|
658 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
659 return;
|
|
|
660 }
|
|
|
661
|
|
|
662 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
663
|
|
|
664 tp = ngx_timeofday();
|
|
262
|
665 u->state->response_sec = tp->sec;
|
|
|
666 u->state->response_msec = tp->msec;
|
|
348
|
667 u->state->peer = u->peer.name;
|
|
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
|
|
92
|
680 if (rc == NGX_BUSY) {
|
|
|
681 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
682 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
683 return;
|
|
92
|
684 }
|
|
|
685
|
|
326
|
686 if (rc == NGX_DECLINED) {
|
|
28
|
687 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
688 return;
|
|
|
689 }
|
|
|
690
|
|
126
|
691 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
692
|
|
28
|
693 c = u->peer.connection;
|
|
|
694
|
|
|
695 c->data = r;
|
|
140
|
696
|
|
58
|
697 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
698 c->read->handler = ngx_http_upstream_process_header;
|
|
28
|
699
|
|
326
|
700 c->sendfile &= r->connection->sendfile;
|
|
28
|
701
|
|
|
702 c->pool = r->pool;
|
|
|
703 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
704
|
|
|
705 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
706
|
|
|
707 u->writer.out = NULL;
|
|
|
708 u->writer.last = &u->writer.out;
|
|
|
709 u->writer.connection = c;
|
|
|
710 u->writer.limit = 0;
|
|
|
711
|
|
|
712 if (u->request_sent) {
|
|
58
|
713 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
714 ngx_http_upstream_finalize_request(r, u,
|
|
|
715 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
716 return;
|
|
|
717 }
|
|
28
|
718 }
|
|
|
719
|
|
276
|
720 if (r->request_body
|
|
|
721 && r->request_body->buf
|
|
|
722 && r->request_body->temp_file
|
|
|
723 && r == r->main)
|
|
|
724 {
|
|
122
|
725 /*
|
|
|
726 * the r->request_body->buf can be reused for one request only,
|
|
|
727 * the subrequests should allocate their own temporay bufs
|
|
|
728 */
|
|
|
729
|
|
|
730 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
731 if (u->output.free == NULL) {
|
|
|
732 ngx_http_upstream_finalize_request(r, u,
|
|
|
733 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
734 return;
|
|
28
|
735 }
|
|
122
|
736
|
|
|
737 u->output.free->buf = r->request_body->buf;
|
|
|
738 u->output.free->next = NULL;
|
|
|
739 u->output.allocated = 1;
|
|
|
740
|
|
|
741 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
742 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
743 r->request_body->buf->tag = u->output.tag;
|
|
28
|
744 }
|
|
|
745
|
|
|
746 u->request_sent = 0;
|
|
|
747
|
|
|
748 if (rc == NGX_AGAIN) {
|
|
|
749 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
750 return;
|
|
|
751 }
|
|
|
752
|
|
126
|
753 #if (NGX_HTTP_SSL)
|
|
|
754
|
|
348
|
755 if (u->ssl && c->ssl == NULL) {
|
|
140
|
756 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
757 return;
|
|
|
758 }
|
|
|
759
|
|
|
760 #endif
|
|
|
761
|
|
28
|
762 ngx_http_upstream_send_request(r, u);
|
|
|
763 }
|
|
|
764
|
|
|
765
|
|
126
|
766 #if (NGX_HTTP_SSL)
|
|
|
767
|
|
|
768 static void
|
|
140
|
769 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
770 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
771 {
|
|
260
|
772 ngx_int_t rc;
|
|
140
|
773
|
|
|
774 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
775 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
776 == NGX_ERROR)
|
|
|
777 {
|
|
|
778 ngx_http_upstream_finalize_request(r, u,
|
|
|
779 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
780 return;
|
|
|
781 }
|
|
|
782
|
|
|
783 c->sendfile = 0;
|
|
168
|
784 u->output.sendfile = 0;
|
|
140
|
785
|
|
318
|
786 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
140
|
787 ngx_http_upstream_finalize_request(r, u,
|
|
|
788 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
789 return;
|
|
|
790 }
|
|
|
791
|
|
190
|
792 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
793
|
|
140
|
794 rc = ngx_ssl_handshake(c);
|
|
|
795
|
|
|
796 if (rc == NGX_AGAIN) {
|
|
|
797 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
798 return;
|
|
|
799 }
|
|
|
800
|
|
|
801 ngx_http_upstream_ssl_handshake(c);
|
|
|
802 }
|
|
|
803
|
|
|
804
|
|
|
805 static void
|
|
126
|
806 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
807 {
|
|
|
808 ngx_http_request_t *r;
|
|
|
809 ngx_http_upstream_t *u;
|
|
|
810
|
|
|
811 r = c->data;
|
|
|
812 u = r->upstream;
|
|
|
813
|
|
|
814 if (c->ssl->handshaked) {
|
|
|
815
|
|
260
|
816 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
817
|
|
126
|
818 c->write->handler = ngx_http_upstream_send_request_handler;
|
|
|
819 c->read->handler = ngx_http_upstream_process_header;
|
|
|
820
|
|
|
821 ngx_http_upstream_send_request(r, u);
|
|
|
822
|
|
|
823 return;
|
|
|
824 }
|
|
|
825
|
|
|
826 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
827
|
|
|
828 }
|
|
|
829
|
|
|
830 #endif
|
|
|
831
|
|
|
832
|
|
58
|
833 static ngx_int_t
|
|
36
|
834 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
835 {
|
|
|
836 ngx_chain_t *cl;
|
|
|
837
|
|
58
|
838 if (u->reinit_request(r) != NGX_OK) {
|
|
|
839 return NGX_ERROR;
|
|
|
840 }
|
|
|
841
|
|
|
842 ngx_memzero(&r->upstream->headers_in,
|
|
|
843 sizeof(ngx_http_upstream_headers_in_t));
|
|
|
844
|
|
|
845 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
140
|
846 sizeof(ngx_table_elt_t))
|
|
|
847 != NGX_OK)
|
|
58
|
848 {
|
|
|
849 return NGX_ERROR;
|
|
28
|
850 }
|
|
|
851
|
|
|
852 /* reinit the request chain */
|
|
126
|
853
|
|
58
|
854 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
855 cl->buf->pos = cl->buf->start;
|
|
|
856 cl->buf->file_pos = 0;
|
|
|
857 }
|
|
|
858
|
|
58
|
859 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
860
|
|
122
|
861 if (r->request_body && r->request_body->temp_file
|
|
146
|
862 && r != r->main && u->output.buf)
|
|
122
|
863 {
|
|
|
864 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
865 if (u->output.free == NULL) {
|
|
|
866 return NGX_ERROR;
|
|
58
|
867 }
|
|
122
|
868
|
|
|
869 u->output.free->buf = u->output.buf;
|
|
|
870 u->output.free->next = NULL;
|
|
|
871
|
|
|
872 u->output.buf->pos = u->output.buf->start;
|
|
|
873 u->output.buf->last = u->output.buf->start;
|
|
58
|
874 }
|
|
28
|
875
|
|
|
876 u->output.buf = NULL;
|
|
|
877 u->output.in = NULL;
|
|
|
878 u->output.busy = NULL;
|
|
126
|
879
|
|
130
|
880 /* reinit u->buffer */
|
|
126
|
881
|
|
28
|
882 #if 0
|
|
|
883 if (u->cache) {
|
|
130
|
884 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
885 u->buffer.last = u->buffer.pos;
|
|
28
|
886
|
|
|
887 } else {
|
|
130
|
888 u->buffer.pos = u->buffer.start;
|
|
|
889 u->buffer.last = u->buffer.start;
|
|
28
|
890 }
|
|
|
891 #else
|
|
58
|
892
|
|
130
|
893 u->buffer.pos = u->buffer.start;
|
|
|
894 u->buffer.last = u->buffer.start;
|
|
58
|
895
|
|
28
|
896 #endif
|
|
|
897
|
|
58
|
898 return NGX_OK;
|
|
28
|
899 }
|
|
|
900
|
|
|
901
|
|
36
|
902 static void
|
|
|
903 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
904 {
|
|
294
|
905 ngx_int_t rc;
|
|
32
|
906 ngx_connection_t *c;
|
|
126
|
907
|
|
28
|
908 c = u->peer.connection;
|
|
|
909
|
|
|
910 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
911 "http upstream send request");
|
|
|
912
|
|
294
|
913 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
914 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
915 return;
|
|
28
|
916 }
|
|
|
917
|
|
32
|
918 c->log->action = "sending request to upstream";
|
|
28
|
919
|
|
58
|
920 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
921
|
|
|
922 u->request_sent = 1;
|
|
|
923
|
|
|
924 if (rc == NGX_ERROR) {
|
|
|
925 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
926 return;
|
|
|
927 }
|
|
|
928
|
|
|
929 if (c->write->timer_set) {
|
|
|
930 ngx_del_timer(c->write);
|
|
|
931 }
|
|
|
932
|
|
|
933 if (rc == NGX_AGAIN) {
|
|
|
934 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
935
|
|
|
936 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
937 {
|
|
|
938 ngx_http_upstream_finalize_request(r, u,
|
|
|
939 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
940 return;
|
|
|
941 }
|
|
|
942
|
|
|
943 return;
|
|
|
944 }
|
|
|
945
|
|
|
946 /* rc == NGX_OK */
|
|
|
947
|
|
|
948 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
949 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
950 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
951 ngx_tcp_push_n " failed");
|
|
|
952 ngx_http_upstream_finalize_request(r, u,
|
|
|
953 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
954 return;
|
|
28
|
955 }
|
|
|
956
|
|
|
957 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
958 }
|
|
126
|
959
|
|
28
|
960 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
961
|
|
|
962 #if 1
|
|
|
963 if (c->read->ready) {
|
|
126
|
964
|
|
28
|
965 /* post aio operation */
|
|
|
966
|
|
|
967 /*
|
|
|
968 * TODO comment
|
|
|
969 * although we can post aio operation just in the end
|
|
|
970 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
971 * it's better to do here because we postpone header buffer allocation
|
|
|
972 */
|
|
|
973
|
|
|
974 ngx_http_upstream_process_header(c->read);
|
|
|
975 return;
|
|
|
976 }
|
|
|
977 #endif
|
|
|
978
|
|
58
|
979 c->write->handler = ngx_http_upstream_dummy_handler;
|
|
28
|
980
|
|
58
|
981 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
982 ngx_http_upstream_finalize_request(r, u,
|
|
|
983 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
984 return;
|
|
|
985 }
|
|
|
986 }
|
|
|
987
|
|
|
988
|
|
36
|
989 static void
|
|
|
990 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
991 {
|
|
|
992 ngx_connection_t *c;
|
|
|
993 ngx_http_request_t *r;
|
|
|
994 ngx_http_upstream_t *u;
|
|
|
995
|
|
|
996 c = wev->data;
|
|
|
997 r = c->data;
|
|
|
998 u = r->upstream;
|
|
|
999
|
|
|
1000 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1001 "http upstream send request handler");
|
|
|
1002
|
|
|
1003 if (wev->timedout) {
|
|
|
1004 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1005 return;
|
|
|
1006 }
|
|
|
1007
|
|
140
|
1008 #if (NGX_HTTP_SSL)
|
|
|
1009
|
|
348
|
1010 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1011 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1012 return;
|
|
|
1013 }
|
|
|
1014
|
|
|
1015 #endif
|
|
|
1016
|
|
200
|
1017 if (u->header_sent) {
|
|
|
1018 wev->handler = ngx_http_upstream_dummy_handler;
|
|
|
1019
|
|
|
1020 (void) ngx_handle_write_event(wev, 0);
|
|
|
1021
|
|
|
1022 return;
|
|
|
1023 }
|
|
|
1024
|
|
28
|
1025 ngx_http_upstream_send_request(r, u);
|
|
|
1026 }
|
|
|
1027
|
|
|
1028
|
|
36
|
1029 static void
|
|
|
1030 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
1031 {
|
|
64
|
1032 ssize_t n;
|
|
|
1033 ngx_int_t rc;
|
|
122
|
1034 ngx_str_t *uri, args;
|
|
198
|
1035 ngx_uint_t i, flags;
|
|
64
|
1036 ngx_list_part_t *part;
|
|
|
1037 ngx_table_elt_t *h;
|
|
|
1038 ngx_connection_t *c;
|
|
|
1039 ngx_http_request_t *r;
|
|
|
1040 ngx_http_upstream_t *u;
|
|
|
1041 ngx_http_err_page_t *err_page;
|
|
|
1042 ngx_http_core_loc_conf_t *clcf;
|
|
|
1043 ngx_http_upstream_header_t *hh;
|
|
|
1044 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1045
|
|
|
1046 c = rev->data;
|
|
|
1047 r = c->data;
|
|
|
1048 u = r->upstream;
|
|
|
1049
|
|
|
1050 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
1051 "http upstream process header");
|
|
28
|
1052
|
|
32
|
1053 c->log->action = "reading response header from upstream";
|
|
28
|
1054
|
|
|
1055 if (rev->timedout) {
|
|
|
1056 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1057 return;
|
|
|
1058 }
|
|
126
|
1059
|
|
294
|
1060 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1061 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1062 return;
|
|
|
1063 }
|
|
|
1064
|
|
130
|
1065 if (u->buffer.start == NULL) {
|
|
|
1066 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1067 if (u->buffer.start == NULL) {
|
|
28
|
1068 ngx_http_upstream_finalize_request(r, u,
|
|
|
1069 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1070 return;
|
|
|
1071 }
|
|
|
1072
|
|
130
|
1073 u->buffer.pos = u->buffer.start;
|
|
|
1074 u->buffer.last = u->buffer.start;
|
|
|
1075 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1076 u->buffer.temporary = 1;
|
|
|
1077
|
|
|
1078 u->buffer.tag = u->output.tag;
|
|
28
|
1079
|
|
58
|
1080 if (ngx_list_init(&r->upstream->headers_in.headers, r->pool, 8,
|
|
130
|
1081 sizeof(ngx_table_elt_t))
|
|
|
1082 != NGX_OK)
|
|
58
|
1083 {
|
|
|
1084 ngx_http_upstream_finalize_request(r, u,
|
|
|
1085 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1086 return;
|
|
|
1087 }
|
|
|
1088
|
|
28
|
1089 #if 0
|
|
|
1090 if (u->cache) {
|
|
130
|
1091 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1092 u->buffer.last = u->buffer.pos;
|
|
28
|
1093 }
|
|
|
1094 #endif
|
|
|
1095 }
|
|
|
1096
|
|
340
|
1097 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
28
|
1098
|
|
|
1099 if (n == NGX_AGAIN) {
|
|
|
1100 #if 0
|
|
|
1101 ngx_add_timer(rev, u->read_timeout);
|
|
|
1102 #endif
|
|
|
1103
|
|
|
1104 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1105 ngx_http_upstream_finalize_request(r, u,
|
|
|
1106 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1107 return;
|
|
|
1108 }
|
|
|
1109
|
|
|
1110 return;
|
|
|
1111 }
|
|
|
1112
|
|
|
1113 if (n == 0) {
|
|
|
1114 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1115 "upstream prematurely closed connection");
|
|
|
1116 }
|
|
|
1117
|
|
|
1118 if (n == NGX_ERROR || n == 0) {
|
|
|
1119 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1120 return;
|
|
|
1121 }
|
|
|
1122
|
|
130
|
1123 u->buffer.last += n;
|
|
28
|
1124
|
|
|
1125 #if 0
|
|
|
1126 u->valid_header_in = 0;
|
|
|
1127
|
|
|
1128 u->peer.cached = 0;
|
|
|
1129 #endif
|
|
|
1130
|
|
|
1131 rc = u->process_header(r);
|
|
|
1132
|
|
|
1133 if (rc == NGX_AGAIN) {
|
|
|
1134 #if 0
|
|
|
1135 ngx_add_timer(rev, u->read_timeout);
|
|
|
1136 #endif
|
|
|
1137
|
|
130
|
1138 if (u->buffer.pos == u->buffer.end) {
|
|
28
|
1139 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1140 "upstream sent too big header");
|
|
|
1141
|
|
|
1142 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1143 return;
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1147 ngx_http_upstream_finalize_request(r, u,
|
|
|
1148 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1149 return;
|
|
|
1150 }
|
|
|
1151
|
|
|
1152 return;
|
|
|
1153 }
|
|
|
1154
|
|
|
1155 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1156 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1157 return;
|
|
|
1158 }
|
|
|
1159
|
|
|
1160 if (rc == NGX_ERROR || rc == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
|
1161 ngx_http_upstream_finalize_request(r, u,
|
|
|
1162 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1163 return;
|
|
|
1164 }
|
|
|
1165
|
|
|
1166 /* rc == NGX_OK */
|
|
|
1167
|
|
248
|
1168 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
|
1169 && r->subrequest_in_memory)
|
|
|
1170 {
|
|
|
1171 u->buffer.last = u->buffer.pos;
|
|
|
1172 }
|
|
|
1173
|
|
78
|
1174 if (u->headers_in.status_n == NGX_HTTP_INTERNAL_SERVER_ERROR) {
|
|
58
|
1175
|
|
|
1176 if (u->peer.tries > 1
|
|
|
1177 && (u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1178 {
|
|
|
1179 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_500);
|
|
|
1180 return;
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 #if (NGX_HTTP_CACHE)
|
|
|
1184
|
|
|
1185 if (u->peer.tries == 0
|
|
|
1186 && u->stale
|
|
|
1187 && (u->conf->use_stale & NGX_HTTP_UPSTREAM_FT_HTTP_500))
|
|
|
1188 {
|
|
|
1189 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1190 ngx_http_send_cached_response(r));
|
|
58
|
1191 return;
|
|
|
1192 }
|
|
|
1193
|
|
|
1194 #endif
|
|
|
1195 }
|
|
|
1196
|
|
146
|
1197 if (u->headers_in.status_n == NGX_HTTP_NOT_FOUND) {
|
|
|
1198
|
|
|
1199 if (u->peer.tries > 1
|
|
|
1200 && u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_HTTP_404)
|
|
|
1201 {
|
|
|
1202 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_HTTP_404);
|
|
|
1203 return;
|
|
|
1204 }
|
|
|
1205
|
|
224
|
1206 if (u->conf->intercept_404) {
|
|
|
1207 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
146
|
1208 return;
|
|
|
1209 }
|
|
58
|
1210 }
|
|
|
1211
|
|
|
1212
|
|
78
|
1213 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST
|
|
224
|
1214 && u->conf->intercept_errors)
|
|
36
|
1215 {
|
|
|
1216 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1217
|
|
|
1218 if (clcf->error_pages) {
|
|
|
1219
|
|
|
1220 err_page = clcf->error_pages->elts;
|
|
|
1221 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
78
|
1222 if (err_page[i].status == (ngx_int_t) u->headers_in.status_n) {
|
|
|
1223
|
|
|
1224 if (u->headers_in.status_n == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1225
|
|
|
1226 r->headers_out.www_authenticate =
|
|
|
1227 ngx_list_push(&r->headers_out.headers);
|
|
|
1228
|
|
|
1229 if (r->headers_out.www_authenticate == NULL) {
|
|
|
1230 ngx_http_upstream_finalize_request(r, u,
|
|
|
1231 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1232 return;
|
|
|
1233 }
|
|
|
1234
|
|
126
|
1235 *r->headers_out.www_authenticate =
|
|
78
|
1236 *u->headers_in.www_authenticate;
|
|
|
1237 }
|
|
|
1238
|
|
36
|
1239 ngx_http_upstream_finalize_request(r, u,
|
|
78
|
1240 u->headers_in.status_n);
|
|
36
|
1241 return;
|
|
|
1242 }
|
|
|
1243 }
|
|
|
1244 }
|
|
|
1245 }
|
|
|
1246
|
|
230
|
1247 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1248
|
|
64
|
1249 if (r->upstream->headers_in.x_accel_redirect) {
|
|
244
|
1250
|
|
64
|
1251 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1252
|
|
|
1253 part = &r->upstream->headers_in.headers.part;
|
|
|
1254 h = part->elts;
|
|
|
1255
|
|
|
1256 for (i = 0; /* void */; i++) {
|
|
|
1257
|
|
|
1258 if (i >= part->nelts) {
|
|
|
1259 if (part->next == NULL) {
|
|
|
1260 break;
|
|
|
1261 }
|
|
126
|
1262
|
|
64
|
1263 part = part->next;
|
|
|
1264 h = part->elts;
|
|
|
1265 i = 0;
|
|
|
1266 }
|
|
|
1267
|
|
198
|
1268 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1269 h[i].lowcase_key, h[i].key.len);
|
|
|
1270
|
|
|
1271 if (hh && hh->redirect) {
|
|
|
1272 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1273 ngx_http_finalize_request(r,
|
|
244
|
1274 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1275 return;
|
|
|
1276 }
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
122
|
1280 uri = &r->upstream->headers_in.x_accel_redirect->value;
|
|
|
1281 args.len = 0;
|
|
|
1282 args.data = NULL;
|
|
|
1283 flags = 0;
|
|
|
1284
|
|
|
1285 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1286 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1287 return;
|
|
|
1288 }
|
|
|
1289
|
|
|
1290 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1291 r->zero_in_uri = 1;
|
|
|
1292 }
|
|
|
1293
|
|
202
|
1294 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1295 r->method = NGX_HTTP_GET;
|
|
|
1296 }
|
|
|
1297
|
|
122
|
1298 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1299 return;
|
|
|
1300 }
|
|
|
1301
|
|
58
|
1302 part = &r->upstream->headers_in.headers.part;
|
|
|
1303 h = part->elts;
|
|
|
1304
|
|
|
1305 for (i = 0; /* void */; i++) {
|
|
28
|
1306
|
|
58
|
1307 if (i >= part->nelts) {
|
|
|
1308 if (part->next == NULL) {
|
|
|
1309 break;
|
|
|
1310 }
|
|
126
|
1311
|
|
58
|
1312 part = part->next;
|
|
|
1313 h = part->elts;
|
|
|
1314 i = 0;
|
|
|
1315 }
|
|
|
1316
|
|
198
|
1317 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1318 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1319 {
|
|
198
|
1320 continue;
|
|
|
1321 }
|
|
|
1322
|
|
|
1323 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1324 h[i].lowcase_key, h[i].key.len);
|
|
|
1325
|
|
|
1326 if (hh) {
|
|
|
1327 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1328 ngx_http_upstream_finalize_request(r, u,
|
|
|
1329 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1330 return;
|
|
|
1331 }
|
|
|
1332
|
|
|
1333 continue;
|
|
|
1334 }
|
|
|
1335
|
|
|
1336 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1337 ngx_http_upstream_finalize_request(r, u,
|
|
|
1338 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1339 return;
|
|
|
1340 }
|
|
|
1341 }
|
|
|
1342
|
|
198
|
1343 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1344 r->headers_out.server->hash = 0;
|
|
|
1345 }
|
|
|
1346
|
|
|
1347 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1348 r->headers_out.date->hash = 0;
|
|
|
1349 }
|
|
|
1350
|
|
78
|
1351 r->headers_out.status = u->headers_in.status_n;
|
|
|
1352 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1353
|
|
130
|
1354 if (r->headers_out.content_length_n != -1) {
|
|
|
1355 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1356
|
|
|
1357 } else {
|
|
|
1358 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1359 }
|
|
|
1360
|
|
248
|
1361 if (!r->subrequest_in_memory) {
|
|
|
1362 ngx_http_upstream_send_response(r, u);
|
|
|
1363 return;
|
|
|
1364 }
|
|
|
1365
|
|
|
1366 /* subrequest content in memory */
|
|
|
1367
|
|
|
1368 if (u->input_filter == NULL) {
|
|
|
1369 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1370 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1371 u->input_filter_ctx = r;
|
|
|
1372 }
|
|
|
1373
|
|
|
1374 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1375 ngx_http_upstream_finalize_request(r, u,
|
|
|
1376 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1377 return;
|
|
|
1378 }
|
|
|
1379
|
|
|
1380 if (u->buffer.last - u->buffer.pos >= (ssize_t) u->length) {
|
|
|
1381 if (u->input_filter(u->input_filter_ctx, 0) == NGX_ERROR) {
|
|
|
1382 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1383 return;
|
|
|
1384 }
|
|
|
1385
|
|
|
1386 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1387 return;
|
|
|
1388 }
|
|
|
1389
|
|
|
1390 rev->handler = ngx_http_upstream_process_body_in_memory;
|
|
|
1391
|
|
|
1392 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1393 }
|
|
|
1394
|
|
|
1395
|
|
294
|
1396 static ngx_int_t
|
|
|
1397 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1398 {
|
|
|
1399 int err;
|
|
|
1400 socklen_t len;
|
|
|
1401
|
|
|
1402 #if (NGX_HAVE_KQUEUE)
|
|
|
1403
|
|
|
1404 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1405 if (c->write->pending_eof) {
|
|
336
|
1406 c->log->action = "connecting to upstream";
|
|
296
|
1407 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1408 "kevent() reported that connect() failed");
|
|
|
1409 return NGX_ERROR;
|
|
|
1410 }
|
|
294
|
1411
|
|
|
1412 } else
|
|
|
1413 #endif
|
|
|
1414 {
|
|
296
|
1415 err = 0;
|
|
|
1416 len = sizeof(int);
|
|
|
1417
|
|
|
1418 /*
|
|
|
1419 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1420 * Solaris returns -1 and sets errno
|
|
|
1421 */
|
|
|
1422
|
|
|
1423 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1424 == -1)
|
|
|
1425 {
|
|
|
1426 err = ngx_errno;
|
|
|
1427 }
|
|
|
1428
|
|
|
1429 if (err) {
|
|
336
|
1430 c->log->action = "connecting to upstream";
|
|
296
|
1431 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1432 return NGX_ERROR;
|
|
|
1433 }
|
|
294
|
1434 }
|
|
|
1435
|
|
|
1436 return NGX_OK;
|
|
|
1437 }
|
|
|
1438
|
|
|
1439
|
|
248
|
1440 static void
|
|
|
1441 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1442 {
|
|
|
1443 size_t size;
|
|
|
1444 ssize_t n;
|
|
|
1445 ngx_buf_t *b;
|
|
|
1446 ngx_connection_t *c;
|
|
|
1447 ngx_http_request_t *r;
|
|
|
1448 ngx_http_upstream_t *u;
|
|
|
1449
|
|
|
1450 c = rev->data;
|
|
|
1451 r = c->data;
|
|
|
1452 u = r->upstream;
|
|
|
1453
|
|
|
1454 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1455 "http upstream process body on memory");
|
|
|
1456
|
|
|
1457 if (rev->timedout) {
|
|
|
1458 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1459 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1460 return;
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 b = &u->buffer;
|
|
|
1464
|
|
|
1465 for ( ;; ) {
|
|
|
1466
|
|
|
1467 size = b->end - b->last;
|
|
|
1468
|
|
|
1469 if (size == 0) {
|
|
|
1470 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1471 "upstream buffer is too small to read repsonse");
|
|
|
1472 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1473 return;
|
|
|
1474 }
|
|
|
1475
|
|
|
1476 n = c->recv(c, b->last, size);
|
|
|
1477
|
|
|
1478 if (n == NGX_AGAIN) {
|
|
|
1479 break;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 if (n == 0 || n == NGX_ERROR) {
|
|
|
1483 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1484 return;
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1488 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1489 return;
|
|
|
1490 }
|
|
|
1491
|
|
|
1492 if (!rev->ready) {
|
|
|
1493 break;
|
|
|
1494 }
|
|
|
1495 }
|
|
|
1496
|
|
|
1497 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1498 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1499 return;
|
|
|
1500 }
|
|
|
1501
|
|
|
1502 if (rev->active) {
|
|
|
1503 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1504
|
|
|
1505 } else if (rev->timer_set) {
|
|
|
1506 ngx_del_timer(rev);
|
|
|
1507 }
|
|
230
|
1508 }
|
|
|
1509
|
|
|
1510
|
|
|
1511 static void
|
|
|
1512 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1513 {
|
|
|
1514 int tcp_nodelay;
|
|
|
1515 ssize_t size;
|
|
|
1516 ngx_int_t rc;
|
|
|
1517 ngx_event_pipe_t *p;
|
|
|
1518 ngx_connection_t *c;
|
|
|
1519 ngx_pool_cleanup_t *cl;
|
|
|
1520 ngx_pool_cleanup_file_t *clf;
|
|
|
1521 ngx_http_core_loc_conf_t *clcf;
|
|
|
1522
|
|
58
|
1523 rc = ngx_http_send_header(r);
|
|
28
|
1524
|
|
274
|
1525 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1526 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1527 return;
|
|
|
1528 }
|
|
|
1529
|
|
|
1530 u->header_sent = 1;
|
|
|
1531
|
|
122
|
1532 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1533 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1534 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1535 clf = cl->data;
|
|
|
1536
|
|
|
1537 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1538 cl->handler(clf);
|
|
|
1539 cl->handler = NULL;
|
|
208
|
1540 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1541 break;
|
|
|
1542 }
|
|
|
1543 }
|
|
|
1544 }
|
|
|
1545 }
|
|
|
1546
|
|
132
|
1547 c = r->connection;
|
|
|
1548
|
|
130
|
1549 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1550
|
|
198
|
1551 if (!u->buffering) {
|
|
130
|
1552
|
|
|
1553 if (u->input_filter == NULL) {
|
|
|
1554 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1555 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1556 u->input_filter_ctx = r;
|
|
|
1557 }
|
|
|
1558
|
|
|
1559 u->peer.connection->read->handler =
|
|
|
1560 ngx_http_upstream_process_non_buffered_body;
|
|
|
1561 r->write_event_handler =
|
|
|
1562 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1563
|
|
|
1564 r->limit_rate = 0;
|
|
|
1565
|
|
|
1566 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1567 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1568 return;
|
|
|
1569 }
|
|
|
1570
|
|
132
|
1571 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1572 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1573
|
|
|
1574 tcp_nodelay = 1;
|
|
|
1575
|
|
|
1576 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1577 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1578 {
|
|
|
1579 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1580 "setsockopt(TCP_NODELAY) failed");
|
|
|
1581 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1582 return;
|
|
|
1583 }
|
|
|
1584
|
|
|
1585 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1586 }
|
|
|
1587
|
|
130
|
1588 size = u->buffer.last - u->buffer.pos;
|
|
|
1589
|
|
|
1590 if (size) {
|
|
|
1591 u->buffer.last = u->buffer.pos;
|
|
|
1592
|
|
|
1593 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1594 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1595 return;
|
|
|
1596 }
|
|
|
1597
|
|
132
|
1598 ngx_http_upstream_process_non_buffered_body(c->write);
|
|
130
|
1599
|
|
|
1600 } else {
|
|
|
1601 u->buffer.pos = u->buffer.start;
|
|
|
1602 u->buffer.last = u->buffer.start;
|
|
|
1603
|
|
|
1604 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1605 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1606 return;
|
|
|
1607 }
|
|
336
|
1608
|
|
|
1609 if (u->peer.connection->read->ready) {
|
|
|
1610 ngx_http_upstream_process_non_buffered_body(
|
|
|
1611 u->peer.connection->read);
|
|
|
1612 }
|
|
130
|
1613 }
|
|
|
1614
|
|
|
1615 return;
|
|
|
1616 }
|
|
|
1617
|
|
28
|
1618 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1619
|
|
|
1620 #if 0
|
|
|
1621
|
|
|
1622 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1623 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1624 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1625 ngx_close_file_n " \"%s\" failed",
|
|
|
1626 u->cache->ctx.file.name.data);
|
|
|
1627 }
|
|
|
1628 }
|
|
|
1629
|
|
340
|
1630 if (u->cacheable) {
|
|
130
|
1631 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1632
|
|
|
1633 header->expires = u->cache->ctx.expires;
|
|
|
1634 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1635 header->date = u->cache->ctx.date;
|
|
|
1636 header->length = r->headers_out.content_length_n;
|
|
|
1637 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1638
|
|
|
1639 header->key_len = u->cache->ctx.key0.len;
|
|
|
1640 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1641 header->key[header->key_len] = LF;
|
|
|
1642 }
|
|
|
1643
|
|
|
1644 #endif
|
|
|
1645
|
|
130
|
1646 p = u->pipe;
|
|
28
|
1647
|
|
|
1648 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1649 p->output_ctx = r;
|
|
|
1650 p->tag = u->output.tag;
|
|
126
|
1651 p->bufs = u->conf->bufs;
|
|
28
|
1652 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1653 p->upstream = u->peer.connection;
|
|
132
|
1654 p->downstream = c;
|
|
28
|
1655 p->pool = r->pool;
|
|
132
|
1656 p->log = c->log;
|
|
126
|
1657
|
|
340
|
1658 p->cacheable = u->cacheable || u->store;
|
|
28
|
1659
|
|
50
|
1660 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1661 if (p->temp_file == NULL) {
|
|
28
|
1662 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1663 return;
|
|
|
1664 }
|
|
|
1665
|
|
|
1666 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1667 p->temp_file->file.log = c->log;
|
|
28
|
1668 p->temp_file->path = u->conf->temp_path;
|
|
|
1669 p->temp_file->pool = r->pool;
|
|
126
|
1670
|
|
340
|
1671 if (u->cacheable || u->store) {
|
|
28
|
1672 p->temp_file->persistent = 1;
|
|
318
|
1673
|
|
28
|
1674 } else {
|
|
216
|
1675 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1676 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1677 "to a temporary file";
|
|
|
1678 }
|
|
|
1679
|
|
|
1680 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1681 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1682
|
|
50
|
1683 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1684 if (p->preread_bufs == NULL) {
|
|
28
|
1685 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1686 return;
|
|
|
1687 }
|
|
318
|
1688
|
|
130
|
1689 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1690 p->preread_bufs->next = NULL;
|
|
130
|
1691 u->buffer.recycled = 1;
|
|
|
1692
|
|
|
1693 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1694
|
|
340
|
1695 if (u->cacheable) {
|
|
318
|
1696
|
|
28
|
1697 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1698 if (p->buf_to_file == NULL) {
|
|
|
1699 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1700 return;
|
|
|
1701 }
|
|
318
|
1702
|
|
130
|
1703 p->buf_to_file->pos = u->buffer.start;
|
|
|
1704 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1705 p->buf_to_file->temporary = 1;
|
|
|
1706 }
|
|
|
1707
|
|
|
1708 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1709 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1710 p->single_buf = 1;
|
|
|
1711 }
|
|
|
1712
|
|
|
1713 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1714 p->free_bufs = 1;
|
|
|
1715
|
|
|
1716 /*
|
|
130
|
1717 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1718 * as though these bytes were read
|
|
|
1719 */
|
|
130
|
1720 u->buffer.last = u->buffer.pos;
|
|
28
|
1721
|
|
|
1722 if (u->conf->cyclic_temp_file) {
|
|
|
1723
|
|
|
1724 /*
|
|
|
1725 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1726 * because the writing a new data may interfere with sendfile()
|
|
|
1727 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1728 */
|
|
|
1729
|
|
|
1730 p->cyclic_temp_file = 1;
|
|
132
|
1731 c->sendfile = 0;
|
|
28
|
1732
|
|
|
1733 } else {
|
|
|
1734 p->cyclic_temp_file = 0;
|
|
|
1735 }
|
|
|
1736
|
|
|
1737 p->read_timeout = u->conf->read_timeout;
|
|
|
1738 p->send_timeout = clcf->send_timeout;
|
|
|
1739 p->send_lowat = clcf->send_lowat;
|
|
|
1740
|
|
58
|
1741 u->peer.connection->read->handler = ngx_http_upstream_process_body;
|
|
|
1742 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1743
|
|
|
1744 ngx_http_upstream_process_body(u->peer.connection->read);
|
|
|
1745 }
|
|
|
1746
|
|
|
1747
|
|
36
|
1748 static void
|
|
130
|
1749 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1750 {
|
|
|
1751 ngx_http_upstream_process_non_buffered_body(r->connection->write);
|
|
|
1752 }
|
|
|
1753
|
|
|
1754
|
|
|
1755 static void
|
|
|
1756 ngx_http_upstream_process_non_buffered_body(ngx_event_t *ev)
|
|
|
1757 {
|
|
|
1758 size_t size;
|
|
|
1759 ssize_t n;
|
|
|
1760 ngx_buf_t *b;
|
|
132
|
1761 ngx_int_t rc;
|
|
130
|
1762 ngx_uint_t do_write;
|
|
260
|
1763 ngx_connection_t *c, *downstream, *upstream;
|
|
130
|
1764 ngx_http_request_t *r;
|
|
|
1765 ngx_http_upstream_t *u;
|
|
|
1766 ngx_http_core_loc_conf_t *clcf;
|
|
|
1767
|
|
|
1768 c = ev->data;
|
|
244
|
1769 r = c->data;
|
|
|
1770 u = r->upstream;
|
|
130
|
1771
|
|
|
1772 if (ev->write) {
|
|
|
1773 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1774 "http upstream process non buffered downstream");
|
|
|
1775 c->log->action = "sending to client";
|
|
|
1776
|
|
|
1777 } else {
|
|
|
1778 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1779 "http upstream process non buffered upstream");
|
|
|
1780 c->log->action = "reading upstream";
|
|
|
1781 }
|
|
|
1782
|
|
|
1783 if (ev->timedout) {
|
|
|
1784 if (ev->write) {
|
|
|
1785 c->timedout = 1;
|
|
160
|
1786 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1787
|
|
130
|
1788 } else {
|
|
160
|
1789 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
130
|
1790 }
|
|
244
|
1791
|
|
|
1792 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1793 return;
|
|
130
|
1794 }
|
|
|
1795
|
|
260
|
1796 downstream = r->connection;
|
|
|
1797 upstream = u->peer.connection;
|
|
130
|
1798
|
|
|
1799 b = &u->buffer;
|
|
|
1800
|
|
|
1801 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1802
|
|
206
|
1803 do_write = ev->write || u->length == 0;
|
|
130
|
1804
|
|
|
1805 for ( ;; ) {
|
|
|
1806
|
|
|
1807 if (do_write) {
|
|
|
1808
|
|
|
1809 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1810 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1811
|
|
260
|
1812 if (downstream->destroyed) {
|
|
132
|
1813 return;
|
|
|
1814 }
|
|
|
1815
|
|
|
1816 if (rc == NGX_ERROR) {
|
|
130
|
1817 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1818 return;
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1822 &u->out_bufs, u->output.tag);
|
|
|
1823 }
|
|
|
1824
|
|
|
1825 if (u->busy_bufs == NULL) {
|
|
|
1826
|
|
|
1827 if (u->length == 0
|
|
260
|
1828 || upstream->read->eof
|
|
|
1829 || upstream->read->error)
|
|
130
|
1830 {
|
|
|
1831 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1832 return;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 b->pos = b->start;
|
|
|
1836 b->last = b->start;
|
|
|
1837 }
|
|
|
1838 }
|
|
|
1839
|
|
|
1840 size = b->end - b->last;
|
|
|
1841
|
|
|
1842 if (size > u->length) {
|
|
|
1843 size = u->length;
|
|
|
1844 }
|
|
|
1845
|
|
260
|
1846 if (size && upstream->read->ready) {
|
|
|
1847
|
|
|
1848 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1849
|
|
|
1850 if (n == NGX_AGAIN) {
|
|
|
1851 break;
|
|
|
1852 }
|
|
|
1853
|
|
|
1854 if (n > 0) {
|
|
|
1855 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1856 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1857 return;
|
|
|
1858 }
|
|
|
1859 }
|
|
|
1860
|
|
|
1861 do_write = 1;
|
|
|
1862
|
|
|
1863 continue;
|
|
|
1864 }
|
|
|
1865
|
|
|
1866 break;
|
|
|
1867 }
|
|
|
1868
|
|
260
|
1869 if (downstream->data == r) {
|
|
|
1870 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
132
|
1871 == NGX_ERROR)
|
|
|
1872 {
|
|
|
1873 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1874 return;
|
|
|
1875 }
|
|
130
|
1876 }
|
|
|
1877
|
|
276
|
1878 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1879 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1880
|
|
|
1881 } else if (downstream->write->timer_set) {
|
|
|
1882 ngx_del_timer(downstream->write);
|
|
130
|
1883 }
|
|
|
1884
|
|
260
|
1885 if (ngx_handle_read_event(upstream->read, 0) == NGX_ERROR) {
|
|
130
|
1886 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1887 return;
|
|
|
1888 }
|
|
|
1889
|
|
276
|
1890 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
1891 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
1892
|
|
|
1893 } else if (upstream->read->timer_set) {
|
|
|
1894 ngx_del_timer(upstream->read);
|
|
130
|
1895 }
|
|
|
1896 }
|
|
|
1897
|
|
|
1898
|
|
|
1899 static ngx_int_t
|
|
|
1900 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
1901 {
|
|
|
1902 return NGX_OK;
|
|
|
1903 }
|
|
|
1904
|
|
|
1905
|
|
|
1906 static ngx_int_t
|
|
|
1907 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
1908 {
|
|
|
1909 ngx_http_request_t *r = data;
|
|
|
1910
|
|
|
1911 ngx_buf_t *b;
|
|
|
1912 ngx_chain_t *cl, **ll;
|
|
|
1913 ngx_http_upstream_t *u;
|
|
|
1914
|
|
|
1915 u = r->upstream;
|
|
|
1916
|
|
|
1917 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
1918 ll = &cl->next;
|
|
|
1919 }
|
|
|
1920
|
|
|
1921 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
1922 if (cl == NULL) {
|
|
|
1923 return NGX_ERROR;
|
|
|
1924 }
|
|
|
1925
|
|
|
1926 *ll = cl;
|
|
|
1927
|
|
|
1928 cl->buf->flush = 1;
|
|
|
1929 cl->buf->memory = 1;
|
|
|
1930
|
|
|
1931 b = &u->buffer;
|
|
|
1932
|
|
|
1933 cl->buf->pos = b->last;
|
|
|
1934 b->last += bytes;
|
|
|
1935 cl->buf->last = b->last;
|
|
|
1936
|
|
|
1937 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
1938 return NGX_OK;
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 u->length -= bytes;
|
|
|
1942
|
|
|
1943 return NGX_OK;
|
|
|
1944 }
|
|
|
1945
|
|
|
1946
|
|
|
1947 static void
|
|
58
|
1948 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
1949 {
|
|
|
1950 ngx_http_upstream_process_body(r->connection->write);
|
|
|
1951 }
|
|
|
1952
|
|
|
1953
|
|
|
1954 static void
|
|
36
|
1955 ngx_http_upstream_process_body(ngx_event_t *ev)
|
|
28
|
1956 {
|
|
58
|
1957 ngx_event_pipe_t *p;
|
|
132
|
1958 ngx_connection_t *c, *downstream;
|
|
284
|
1959 ngx_http_log_ctx_t *ctx;
|
|
28
|
1960 ngx_http_request_t *r;
|
|
|
1961 ngx_http_upstream_t *u;
|
|
|
1962
|
|
|
1963 c = ev->data;
|
|
|
1964 r = c->data;
|
|
|
1965 u = r->upstream;
|
|
132
|
1966 downstream = r->connection;
|
|
28
|
1967
|
|
|
1968 if (ev->write) {
|
|
32
|
1969 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1970 "http upstream process downstream");
|
|
|
1971 c->log->action = "sending to client";
|
|
126
|
1972
|
|
28
|
1973 } else {
|
|
32
|
1974 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1975 "http upstream process upstream");
|
|
|
1976 c->log->action = "reading upstream";
|
|
284
|
1977
|
|
|
1978 ctx = c->log->data;
|
|
|
1979 ctx->current_request = r;
|
|
28
|
1980 }
|
|
126
|
1981
|
|
130
|
1982 p = u->pipe;
|
|
28
|
1983
|
|
|
1984 if (ev->timedout) {
|
|
|
1985 if (ev->write) {
|
|
76
|
1986 if (ev->delayed) {
|
|
|
1987
|
|
|
1988 ev->timedout = 0;
|
|
|
1989 ev->delayed = 0;
|
|
|
1990
|
|
|
1991 if (!ev->ready) {
|
|
|
1992 ngx_add_timer(ev, p->send_timeout);
|
|
|
1993
|
|
|
1994 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR)
|
|
|
1995 {
|
|
|
1996 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1997 return;
|
|
|
1998 }
|
|
|
1999
|
|
|
2000 return;
|
|
|
2001 }
|
|
|
2002
|
|
|
2003 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2004
|
|
|
2005 if (downstream->destroyed) {
|
|
|
2006 return;
|
|
|
2007 }
|
|
|
2008
|
|
76
|
2009 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2010 return;
|
|
|
2011 }
|
|
|
2012
|
|
|
2013 } else {
|
|
|
2014 p->downstream_error = 1;
|
|
126
|
2015 c->timedout = 1;
|
|
160
|
2016 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
76
|
2017 }
|
|
28
|
2018
|
|
|
2019 } else {
|
|
126
|
2020 p->upstream_error = 1;
|
|
160
|
2021 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
28
|
2022 }
|
|
|
2023
|
|
|
2024 } else {
|
|
76
|
2025 if (ev->write && ev->delayed) {
|
|
|
2026 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2027 "http downstream delayed");
|
|
|
2028
|
|
|
2029 if (ngx_handle_write_event(ev, p->send_lowat) == NGX_ERROR) {
|
|
|
2030 return;
|
|
|
2031 }
|
|
|
2032
|
|
|
2033 return;
|
|
|
2034 }
|
|
|
2035
|
|
28
|
2036 if (ngx_event_pipe(p, ev->write) == NGX_ABORT) {
|
|
132
|
2037
|
|
|
2038 if (downstream->destroyed) {
|
|
|
2039 return;
|
|
|
2040 }
|
|
|
2041
|
|
28
|
2042 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2043 return;
|
|
|
2044 }
|
|
|
2045 }
|
|
126
|
2046
|
|
28
|
2047 if (u->peer.connection) {
|
|
|
2048
|
|
318
|
2049 if (u->store) {
|
|
|
2050
|
|
|
2051 if (p->upstream_eof && u->headers_in.status_n == NGX_HTTP_OK) {
|
|
|
2052
|
|
|
2053 ngx_http_upstream_store(r, u);
|
|
|
2054
|
|
|
2055 } else if ((p->upstream_error
|
|
|
2056 || (p->upstream_eof
|
|
|
2057 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
|
2058 && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
|
|
|
2059 {
|
|
|
2060 if (ngx_delete_file(u->pipe->temp_file->file.name.data)
|
|
|
2061 == NGX_FILE_ERROR)
|
|
|
2062 {
|
|
|
2063 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2064 ngx_delete_file_n " \"%s\" failed",
|
|
|
2065 u->pipe->temp_file->file.name.data);
|
|
|
2066 }
|
|
|
2067 }
|
|
|
2068 }
|
|
|
2069
|
|
28
|
2070 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2071
|
|
340
|
2072 if (p->upstream_done && u->cacheable) {
|
|
28
|
2073 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2074 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2075 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2076 return;
|
|
|
2077 }
|
|
|
2078
|
|
340
|
2079 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2080
|
|
|
2081 /* TODO: check length & update cache */
|
|
|
2082
|
|
|
2083 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2084 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2085 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2086 return;
|
|
|
2087 }
|
|
|
2088 }
|
|
|
2089
|
|
|
2090 #endif
|
|
|
2091
|
|
|
2092 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
32
|
2093 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2094 "http upstream exit: %p", p->out);
|
|
28
|
2095 #if 0
|
|
|
2096 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2097 #endif
|
|
|
2098 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2099 return;
|
|
|
2100 }
|
|
|
2101 }
|
|
|
2102
|
|
|
2103 if (p->downstream_error) {
|
|
32
|
2104 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2105 "http upstream downstream error");
|
|
28
|
2106
|
|
340
|
2107 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2108 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2109 }
|
|
|
2110 }
|
|
|
2111 }
|
|
|
2112
|
|
|
2113
|
|
36
|
2114 static void
|
|
318
|
2115 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2116 {
|
|
|
2117 char *failed;
|
|
|
2118 u_char *name;
|
|
|
2119 size_t root;
|
|
|
2120 time_t lm;
|
|
|
2121 ngx_err_t err;
|
|
|
2122 ngx_str_t *temp, path, *last_modified;
|
|
|
2123 ngx_temp_file_t *tf;
|
|
|
2124
|
|
|
2125 if (u->pipe->temp_file->file.fd == NGX_INVALID_FILE) {
|
|
|
2126
|
|
|
2127 /* create file for empty 200 response */
|
|
|
2128
|
|
|
2129 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2130 if (tf == NULL) {
|
|
|
2131 return;
|
|
|
2132 }
|
|
|
2133
|
|
|
2134 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2135 tf->file.log = r->connection->log;
|
|
|
2136 tf->path = u->conf->temp_path;
|
|
|
2137 tf->pool = r->pool;
|
|
|
2138 tf->persistent = 1;
|
|
|
2139
|
|
|
2140 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2141 tf->persistent, tf->clean, tf->access)
|
|
|
2142 != NGX_OK)
|
|
|
2143 {
|
|
|
2144 return;
|
|
|
2145 }
|
|
|
2146
|
|
|
2147 u->pipe->temp_file = tf;
|
|
|
2148 }
|
|
|
2149
|
|
|
2150 temp = &u->pipe->temp_file->file.name;
|
|
|
2151
|
|
|
2152 #if !(NGX_WIN32)
|
|
|
2153
|
|
320
|
2154 if (ngx_change_file_access(temp->data, u->conf->store_access)
|
|
|
2155 == NGX_FILE_ERROR)
|
|
|
2156 {
|
|
318
|
2157 err = ngx_errno;
|
|
|
2158 failed = ngx_change_file_access_n;
|
|
|
2159 name = temp->data;
|
|
|
2160
|
|
|
2161 goto failed;
|
|
|
2162 }
|
|
|
2163
|
|
|
2164 #endif
|
|
|
2165
|
|
|
2166 if (r->upstream->headers_in.last_modified) {
|
|
|
2167
|
|
|
2168 last_modified = &r->upstream->headers_in.last_modified->value;
|
|
|
2169
|
|
|
2170 lm = ngx_http_parse_time(last_modified->data, last_modified->len);
|
|
|
2171
|
|
|
2172 if (lm != NGX_ERROR) {
|
|
|
2173 if (ngx_set_file_time(temp->data, u->pipe->temp_file->file.fd, lm)
|
|
|
2174 != NGX_OK)
|
|
|
2175 {
|
|
|
2176 err = ngx_errno;
|
|
|
2177 failed = ngx_set_file_time_n;
|
|
|
2178 name = temp->data;
|
|
320
|
2179
|
|
318
|
2180 goto failed;
|
|
|
2181 }
|
|
|
2182 }
|
|
|
2183 }
|
|
|
2184
|
|
320
|
2185 if (u->conf->store_lengths == NULL) {
|
|
|
2186
|
|
|
2187 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2188
|
|
|
2189 } else {
|
|
|
2190 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2191 u->conf->store_values->elts)
|
|
|
2192 == NULL)
|
|
|
2193 {
|
|
|
2194 return;
|
|
|
2195 }
|
|
|
2196 }
|
|
318
|
2197
|
|
|
2198 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2199 "upstream stores \"%s\" to \"%s\"", temp->data, path.data);
|
|
|
2200
|
|
|
2201 failed = ngx_rename_file_n;
|
|
|
2202 name = path.data;
|
|
|
2203
|
|
|
2204 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2205 return;
|
|
|
2206 }
|
|
|
2207
|
|
|
2208 err = ngx_errno;
|
|
|
2209
|
|
|
2210 if (err == NGX_ENOENT) {
|
|
|
2211
|
|
320
|
2212 err = ngx_create_full_path(path.data,
|
|
|
2213 ngx_dir_access(u->conf->store_access));
|
|
318
|
2214 if (err == 0) {
|
|
|
2215 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2216 return;
|
|
|
2217 }
|
|
|
2218
|
|
|
2219 err = ngx_errno;
|
|
|
2220 }
|
|
|
2221 }
|
|
|
2222
|
|
|
2223 #if (NGX_WIN32)
|
|
|
2224
|
|
|
2225 if (err == NGX_EEXIST) {
|
|
|
2226 if (ngx_win32_rename_file(temp, &path, r->pool) != NGX_ERROR) {
|
|
|
2227
|
|
|
2228 if (ngx_rename_file(temp->data, path.data) != NGX_FILE_ERROR) {
|
|
|
2229 return;
|
|
|
2230 }
|
|
|
2231 }
|
|
|
2232
|
|
|
2233 err = ngx_errno;
|
|
|
2234 }
|
|
|
2235
|
|
|
2236 #endif
|
|
|
2237
|
|
|
2238 failed:
|
|
|
2239
|
|
|
2240 if (ngx_delete_file(temp->data) == NGX_FILE_ERROR) {
|
|
|
2241 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2242 ngx_delete_file_n " \"%s\" failed",
|
|
|
2243 temp->data);
|
|
|
2244 }
|
|
|
2245
|
|
|
2246 ngx_log_error(NGX_LOG_CRIT, r->connection->log, err,
|
|
|
2247 "%s \"%s\" failed", failed, name);
|
|
|
2248 }
|
|
|
2249
|
|
|
2250
|
|
|
2251 static void
|
|
36
|
2252 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2253 {
|
|
|
2254 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2255 "http upstream dummy handler");
|
|
|
2256 }
|
|
|
2257
|
|
|
2258
|
|
36
|
2259 static void
|
|
|
2260 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2261 ngx_uint_t ft_type)
|
|
28
|
2262 {
|
|
260
|
2263 ngx_uint_t status, state;
|
|
28
|
2264
|
|
|
2265 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2266 "http next upstream, %xi", ft_type);
|
|
28
|
2267
|
|
|
2268 #if 0
|
|
|
2269 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2270 #endif
|
|
|
2271
|
|
74
|
2272 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2273 state = NGX_PEER_NEXT;
|
|
74
|
2274 } else {
|
|
260
|
2275 state = NGX_PEER_FAILED;
|
|
28
|
2276 }
|
|
74
|
2277
|
|
326
|
2278 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2279 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2280 }
|
|
74
|
2281
|
|
28
|
2282 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2283 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2284 "upstream timed out");
|
|
|
2285 }
|
|
126
|
2286
|
|
28
|
2287 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2288 status = 0;
|
|
|
2289
|
|
|
2290 } else {
|
|
|
2291 switch(ft_type) {
|
|
|
2292
|
|
|
2293 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2294 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2295 break;
|
|
|
2296
|
|
|
2297 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2298 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2299 break;
|
|
|
2300
|
|
|
2301 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2302 status = NGX_HTTP_NOT_FOUND;
|
|
|
2303 break;
|
|
|
2304
|
|
|
2305 /*
|
|
|
2306 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2307 * never reach here
|
|
|
2308 */
|
|
|
2309
|
|
|
2310 default:
|
|
|
2311 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2312 }
|
|
|
2313 }
|
|
|
2314
|
|
132
|
2315 if (r->connection->error) {
|
|
28
|
2316 ngx_http_upstream_finalize_request(r, u,
|
|
|
2317 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2318 return;
|
|
|
2319 }
|
|
|
2320
|
|
|
2321 if (status) {
|
|
|
2322 u->state->status = status;
|
|
|
2323
|
|
74
|
2324 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2325
|
|
|
2326 #if (NGX_HTTP_CACHE)
|
|
|
2327
|
|
|
2328 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2329 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2330 ngx_http_send_cached_response(r));
|
|
28
|
2331 return;
|
|
|
2332 }
|
|
|
2333
|
|
|
2334 #endif
|
|
|
2335
|
|
|
2336 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2337 return;
|
|
|
2338 }
|
|
|
2339 }
|
|
|
2340
|
|
|
2341 if (u->peer.connection) {
|
|
|
2342 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2343 "close http upstream connection: %d",
|
|
|
2344 u->peer.connection->fd);
|
|
126
|
2345 #if (NGX_HTTP_SSL)
|
|
260
|
2346
|
|
126
|
2347 if (u->peer.connection->ssl) {
|
|
260
|
2348 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2349 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2350
|
|
|
2351 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2352 }
|
|
|
2353 #endif
|
|
260
|
2354
|
|
28
|
2355 ngx_close_connection(u->peer.connection);
|
|
|
2356 }
|
|
|
2357
|
|
|
2358 #if 0
|
|
|
2359 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2360 ngx_http_upstream_busy_lock(p);
|
|
|
2361 return;
|
|
|
2362 }
|
|
|
2363 #endif
|
|
|
2364
|
|
|
2365 ngx_http_upstream_connect(r, u);
|
|
|
2366 }
|
|
|
2367
|
|
|
2368
|
|
36
|
2369 static void
|
|
118
|
2370 ngx_http_upstream_cleanup(void *data)
|
|
|
2371 {
|
|
|
2372 ngx_http_request_t *r = data;
|
|
|
2373
|
|
|
2374 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2375 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2376
|
|
348
|
2377 if (r->upstream->resolved && r->upstream->resolved->ctx) {
|
|
|
2378 ngx_resolve_name_done(r->upstream->resolved->ctx);
|
|
|
2379 }
|
|
|
2380
|
|
118
|
2381 ngx_http_upstream_finalize_request(r, r->upstream, NGX_DONE);
|
|
|
2382 }
|
|
|
2383
|
|
|
2384
|
|
|
2385 static void
|
|
36
|
2386 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2387 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2388 {
|
|
262
|
2389 ngx_time_t *tp;
|
|
112
|
2390
|
|
32
|
2391 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2392 "finalize http upstream request: %i", rc);
|
|
28
|
2393
|
|
118
|
2394 *u->cleanup = NULL;
|
|
|
2395
|
|
348
|
2396 if (u->state && u->state->response_sec) {
|
|
112
|
2397 tp = ngx_timeofday();
|
|
262
|
2398 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2399 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2400 }
|
|
|
2401
|
|
28
|
2402 u->finalize_request(r, rc);
|
|
|
2403
|
|
348
|
2404 if (u->peer.free) {
|
|
|
2405 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2406 }
|
|
260
|
2407
|
|
28
|
2408 if (u->peer.connection) {
|
|
260
|
2409
|
|
126
|
2410 #if (NGX_HTTP_SSL)
|
|
|
2411
|
|
|
2412 /* TODO: do not shutdown persistent connection */
|
|
|
2413
|
|
|
2414 if (u->peer.connection->ssl) {
|
|
260
|
2415
|
|
|
2416 /*
|
|
|
2417 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2418 * and do not wait its "close notify" shutdown alert.
|
|
|
2419 * It is acceptable according to the TLS standard.
|
|
|
2420 */
|
|
|
2421
|
|
|
2422 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2423
|
|
|
2424 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2425 }
|
|
|
2426 #endif
|
|
260
|
2427
|
|
|
2428 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2429 "close http upstream connection: %d",
|
|
|
2430 u->peer.connection->fd);
|
|
|
2431
|
|
28
|
2432 ngx_close_connection(u->peer.connection);
|
|
|
2433 }
|
|
|
2434
|
|
32
|
2435 u->peer.connection = NULL;
|
|
|
2436
|
|
112
|
2437 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2438 {
|
|
|
2439 rc = 0;
|
|
|
2440 }
|
|
|
2441
|
|
130
|
2442 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2443 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2444 "http upstream temp fd: %d",
|
|
130
|
2445 u->pipe->temp_file->file.fd);
|
|
28
|
2446 }
|
|
|
2447
|
|
|
2448 #if 0
|
|
|
2449 if (u->cache) {
|
|
|
2450 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2451 "http upstream cache fd: %d",
|
|
28
|
2452 u->cache->ctx.file.fd);
|
|
|
2453 }
|
|
|
2454 #endif
|
|
|
2455
|
|
64
|
2456 if (rc == NGX_DECLINED) {
|
|
|
2457 return;
|
|
|
2458 }
|
|
|
2459
|
|
32
|
2460 r->connection->log->action = "sending to client";
|
|
|
2461
|
|
314
|
2462 if (rc == 0) {
|
|
|
2463 if (r == r->main) {
|
|
|
2464 if (!r->post_action) {
|
|
|
2465 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
|
2466 }
|
|
|
2467
|
|
|
2468 } else {
|
|
|
2469 if (r->out) {
|
|
|
2470 rc = NGX_AGAIN;
|
|
|
2471 }
|
|
|
2472 }
|
|
28
|
2473 }
|
|
|
2474
|
|
|
2475 ngx_http_finalize_request(r, rc);
|
|
|
2476 }
|
|
|
2477
|
|
|
2478
|
|
58
|
2479 static ngx_int_t
|
|
|
2480 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2481 ngx_uint_t offset)
|
|
126
|
2482 {
|
|
58
|
2483 ngx_table_elt_t **ph;
|
|
126
|
2484
|
|
58
|
2485 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2486
|
|
|
2487 if (*ph == NULL) {
|
|
|
2488 *ph = h;
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 return NGX_OK;
|
|
|
2492 }
|
|
|
2493
|
|
|
2494
|
|
|
2495 static ngx_int_t
|
|
|
2496 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2497 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2498 {
|
|
|
2499 ngx_array_t *pa;
|
|
|
2500 ngx_table_elt_t **ph;
|
|
|
2501
|
|
|
2502 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2503
|
|
|
2504 if (pa->elts == NULL) {
|
|
|
2505 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2506 {
|
|
|
2507 return NGX_ERROR;
|
|
|
2508 }
|
|
|
2509 }
|
|
|
2510
|
|
|
2511 ph = ngx_array_push(pa);
|
|
|
2512 if (ph == NULL) {
|
|
|
2513 return NGX_ERROR;
|
|
|
2514 }
|
|
|
2515
|
|
|
2516 *ph = h;
|
|
|
2517
|
|
|
2518 return NGX_OK;
|
|
|
2519 }
|
|
|
2520
|
|
|
2521
|
|
|
2522 static ngx_int_t
|
|
|
2523 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2524 ngx_uint_t offset)
|
|
|
2525 {
|
|
|
2526 return NGX_OK;
|
|
|
2527 }
|
|
|
2528
|
|
|
2529
|
|
|
2530 static ngx_int_t
|
|
76
|
2531 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2532 ngx_uint_t offset)
|
|
126
|
2533 {
|
|
76
|
2534 ngx_int_t n;
|
|
|
2535
|
|
|
2536 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2537
|
|
|
2538 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2539
|
|
|
2540 if (n != NGX_ERROR) {
|
|
|
2541 r->limit_rate = (size_t) n;
|
|
|
2542 }
|
|
|
2543
|
|
|
2544 return NGX_OK;
|
|
|
2545 }
|
|
|
2546
|
|
|
2547
|
|
|
2548 static ngx_int_t
|
|
198
|
2549 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2550 ngx_uint_t offset)
|
|
|
2551 {
|
|
|
2552 u_char c0, c1, c2;
|
|
|
2553
|
|
|
2554 if (r->upstream->conf->change_buffering) {
|
|
|
2555
|
|
|
2556 if (h->value.len == 2) {
|
|
|
2557 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2558 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2559
|
|
|
2560 if (c0 == 'n' && c1 == 'o') {
|
|
|
2561 r->upstream->buffering = 0;
|
|
|
2562 }
|
|
|
2563
|
|
|
2564 } else if (h->value.len == 3) {
|
|
|
2565 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2566 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2567 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2568
|
|
|
2569 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2570 r->upstream->buffering = 1;
|
|
|
2571 }
|
|
|
2572 }
|
|
|
2573 }
|
|
|
2574
|
|
|
2575 return NGX_OK;
|
|
|
2576 }
|
|
|
2577
|
|
|
2578
|
|
|
2579 static ngx_int_t
|
|
206
|
2580 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2581 ngx_uint_t offset)
|
|
|
2582 {
|
|
|
2583 r->headers_out.override_charset = &h->value;
|
|
|
2584
|
|
|
2585 return NGX_OK;
|
|
|
2586 }
|
|
|
2587
|
|
|
2588
|
|
|
2589 static ngx_int_t
|
|
58
|
2590 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2591 ngx_uint_t offset)
|
|
|
2592 {
|
|
122
|
2593 ngx_table_elt_t *ho, **ph;
|
|
58
|
2594
|
|
|
2595 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2596 if (ho == NULL) {
|
|
|
2597 return NGX_ERROR;
|
|
|
2598 }
|
|
|
2599
|
|
|
2600 *ho = *h;
|
|
|
2601
|
|
122
|
2602 if (offset) {
|
|
|
2603 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2604 *ph = ho;
|
|
|
2605 }
|
|
|
2606
|
|
58
|
2607 return NGX_OK;
|
|
|
2608 }
|
|
|
2609
|
|
|
2610
|
|
|
2611 static ngx_int_t
|
|
|
2612 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2613 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2614 {
|
|
|
2615 ngx_array_t *pa;
|
|
|
2616 ngx_table_elt_t *ho, **ph;
|
|
|
2617
|
|
|
2618 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2619
|
|
|
2620 if (pa->elts == NULL) {
|
|
|
2621 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2622 {
|
|
|
2623 return NGX_ERROR;
|
|
|
2624 }
|
|
|
2625 }
|
|
|
2626
|
|
|
2627 ph = ngx_array_push(pa);
|
|
|
2628 if (ph == NULL) {
|
|
|
2629 return NGX_ERROR;
|
|
|
2630 }
|
|
|
2631
|
|
|
2632 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2633 if (ho == NULL) {
|
|
|
2634 return NGX_ERROR;
|
|
|
2635 }
|
|
|
2636
|
|
|
2637 *ho = *h;
|
|
|
2638 *ph = ho;
|
|
|
2639
|
|
|
2640 return NGX_OK;
|
|
|
2641 }
|
|
|
2642
|
|
|
2643
|
|
|
2644 static ngx_int_t
|
|
|
2645 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2646 ngx_uint_t offset)
|
|
|
2647 {
|
|
206
|
2648 u_char *p, *last;
|
|
|
2649
|
|
|
2650 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2651 r->headers_out.content_type = h->value;
|
|
|
2652
|
|
206
|
2653 for (p = h->value.data; *p; p++) {
|
|
|
2654
|
|
|
2655 if (*p != ';') {
|
|
|
2656 continue;
|
|
|
2657 }
|
|
|
2658
|
|
|
2659 last = p;
|
|
|
2660
|
|
|
2661 while (*++p == ' ') { /* void */ }
|
|
|
2662
|
|
286
|
2663 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2664 continue;
|
|
|
2665 }
|
|
|
2666
|
|
|
2667 p += 8;
|
|
|
2668
|
|
|
2669 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2670
|
|
|
2671 r->headers_out.charset.len = h->value.data + h->value.len - p;
|
|
|
2672 r->headers_out.charset.data = p;
|
|
292
|
2673
|
|
|
2674 return NGX_OK;
|
|
206
|
2675 }
|
|
|
2676
|
|
58
|
2677 return NGX_OK;
|
|
|
2678 }
|
|
|
2679
|
|
|
2680
|
|
|
2681 static ngx_int_t
|
|
|
2682 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2683 ngx_uint_t offset)
|
|
|
2684 {
|
|
|
2685 ngx_table_elt_t *ho;
|
|
|
2686
|
|
|
2687 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2688 if (ho == NULL) {
|
|
|
2689 return NGX_ERROR;
|
|
|
2690 }
|
|
|
2691
|
|
|
2692 *ho = *h;
|
|
|
2693
|
|
|
2694 r->headers_out.content_length = ho;
|
|
|
2695 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2696
|
|
|
2697 return NGX_OK;
|
|
|
2698 }
|
|
|
2699
|
|
|
2700
|
|
|
2701 static ngx_int_t
|
|
|
2702 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2703 ngx_uint_t offset)
|
|
|
2704 {
|
|
|
2705 ngx_int_t rc;
|
|
|
2706 ngx_table_elt_t *ho;
|
|
|
2707
|
|
|
2708 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2709 if (ho == NULL) {
|
|
|
2710 return NGX_ERROR;
|
|
|
2711 }
|
|
|
2712
|
|
|
2713 *ho = *h;
|
|
|
2714
|
|
|
2715 if (r->upstream->rewrite_redirect) {
|
|
|
2716 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2717
|
|
78
|
2718 if (rc == NGX_DECLINED) {
|
|
|
2719 return NGX_OK;
|
|
|
2720 }
|
|
|
2721
|
|
58
|
2722 if (rc == NGX_OK) {
|
|
|
2723 r->headers_out.location = ho;
|
|
|
2724
|
|
|
2725 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2726 "rewritten location: \"%V\"", &ho->value);
|
|
|
2727 }
|
|
|
2728
|
|
|
2729 return rc;
|
|
|
2730 }
|
|
|
2731
|
|
348
|
2732 if (ho->value.data[0] != '/') {
|
|
|
2733 r->headers_out.location = ho;
|
|
|
2734 }
|
|
|
2735
|
|
58
|
2736 /*
|
|
|
2737 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2738 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2739 */
|
|
|
2740
|
|
|
2741 return NGX_OK;
|
|
|
2742 }
|
|
|
2743
|
|
|
2744
|
|
|
2745 static ngx_int_t
|
|
|
2746 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2747 ngx_uint_t offset)
|
|
|
2748 {
|
|
|
2749 u_char *p;
|
|
|
2750 ngx_int_t rc;
|
|
|
2751 ngx_table_elt_t *ho;
|
|
|
2752
|
|
|
2753 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2754 if (ho == NULL) {
|
|
|
2755 return NGX_ERROR;
|
|
|
2756 }
|
|
|
2757
|
|
|
2758 *ho = *h;
|
|
|
2759
|
|
|
2760 if (r->upstream->rewrite_redirect) {
|
|
|
2761
|
|
340
|
2762 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2763
|
|
|
2764 if (p) {
|
|
|
2765 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2766
|
|
|
2767 } else {
|
|
|
2768 return NGX_OK;
|
|
|
2769 }
|
|
|
2770
|
|
78
|
2771 if (rc == NGX_DECLINED) {
|
|
|
2772 return NGX_OK;
|
|
|
2773 }
|
|
|
2774
|
|
58
|
2775 if (rc == NGX_OK) {
|
|
348
|
2776 r->headers_out.refresh = ho;
|
|
|
2777
|
|
58
|
2778 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2779 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2780 }
|
|
|
2781
|
|
|
2782 return rc;
|
|
|
2783 }
|
|
|
2784
|
|
348
|
2785 r->headers_out.refresh = ho;
|
|
|
2786
|
|
58
|
2787 return NGX_OK;
|
|
|
2788 }
|
|
|
2789
|
|
|
2790
|
|
|
2791 #if (NGX_HTTP_GZIP)
|
|
|
2792
|
|
|
2793 static ngx_int_t
|
|
|
2794 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2795 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2796 {
|
|
|
2797 ngx_table_elt_t *ho;
|
|
|
2798
|
|
|
2799 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2800 if (ho == NULL) {
|
|
|
2801 return NGX_ERROR;
|
|
|
2802 }
|
|
|
2803
|
|
|
2804 *ho = *h;
|
|
|
2805
|
|
|
2806 r->headers_out.content_encoding = ho;
|
|
|
2807
|
|
|
2808 return NGX_OK;
|
|
|
2809 }
|
|
|
2810
|
|
|
2811 #endif
|
|
|
2812
|
|
|
2813
|
|
36
|
2814 static ngx_int_t
|
|
122
|
2815 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2816 {
|
|
260
|
2817 ngx_http_variable_t *var, *v;
|
|
28
|
2818
|
|
122
|
2819 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2820 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2821 if (var == NULL) {
|
|
|
2822 return NGX_ERROR;
|
|
|
2823 }
|
|
|
2824
|
|
186
|
2825 var->get_handler = v->get_handler;
|
|
122
|
2826 var->data = v->data;
|
|
|
2827 }
|
|
|
2828
|
|
28
|
2829 return NGX_OK;
|
|
|
2830 }
|
|
58
|
2831
|
|
|
2832
|
|
122
|
2833 static ngx_int_t
|
|
298
|
2834 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2835 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2836 {
|
|
|
2837 u_char *p;
|
|
|
2838 size_t len;
|
|
|
2839 ngx_uint_t i;
|
|
|
2840 ngx_http_upstream_state_t *state;
|
|
|
2841
|
|
|
2842 v->valid = 1;
|
|
340
|
2843 v->no_cacheable = 0;
|
|
298
|
2844 v->not_found = 0;
|
|
|
2845
|
|
|
2846 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2847 v->not_found = 1;
|
|
|
2848 return NGX_OK;
|
|
|
2849 }
|
|
|
2850
|
|
|
2851 len = 0;
|
|
|
2852 state = r->upstream_states->elts;
|
|
|
2853
|
|
|
2854 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2855 if (state[i].peer) {
|
|
|
2856 len += state[i].peer->len + 2;
|
|
|
2857
|
|
|
2858 } else {
|
|
|
2859 len += 3;
|
|
|
2860 }
|
|
|
2861 }
|
|
|
2862
|
|
|
2863 p = ngx_palloc(r->pool, len);
|
|
|
2864 if (p == NULL) {
|
|
|
2865 return NGX_ERROR;
|
|
|
2866 }
|
|
|
2867
|
|
|
2868 v->data = p;
|
|
|
2869
|
|
|
2870 i = 0;
|
|
|
2871
|
|
|
2872 for ( ;; ) {
|
|
|
2873 if (state[i].peer) {
|
|
|
2874 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2875 }
|
|
|
2876
|
|
|
2877 if (++i == r->upstream_states->nelts) {
|
|
|
2878 break;
|
|
|
2879 }
|
|
|
2880
|
|
|
2881 if (state[i].peer) {
|
|
|
2882 *p++ = ',';
|
|
|
2883 *p++ = ' ';
|
|
|
2884
|
|
|
2885 } else {
|
|
|
2886 *p++ = ' ';
|
|
|
2887 *p++ = ':';
|
|
|
2888 *p++ = ' ';
|
|
|
2889
|
|
|
2890 if (++i == r->upstream_states->nelts) {
|
|
|
2891 break;
|
|
|
2892 }
|
|
|
2893
|
|
|
2894 continue;
|
|
|
2895 }
|
|
|
2896 }
|
|
|
2897
|
|
|
2898 v->len = p - v->data;
|
|
|
2899
|
|
|
2900 return NGX_OK;
|
|
|
2901 }
|
|
|
2902
|
|
|
2903
|
|
|
2904 static ngx_int_t
|
|
122
|
2905 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
2906 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2907 {
|
|
|
2908 u_char *p;
|
|
|
2909 size_t len;
|
|
|
2910 ngx_uint_t i;
|
|
|
2911 ngx_http_upstream_state_t *state;
|
|
|
2912
|
|
|
2913 v->valid = 1;
|
|
340
|
2914 v->no_cacheable = 0;
|
|
122
|
2915 v->not_found = 0;
|
|
|
2916
|
|
296
|
2917 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2918 v->not_found = 1;
|
|
|
2919 return NGX_OK;
|
|
|
2920 }
|
|
|
2921
|
|
296
|
2922 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
2923
|
|
|
2924 p = ngx_palloc(r->pool, len);
|
|
|
2925 if (p == NULL) {
|
|
|
2926 return NGX_ERROR;
|
|
|
2927 }
|
|
|
2928
|
|
|
2929 v->data = p;
|
|
|
2930
|
|
|
2931 i = 0;
|
|
296
|
2932 state = r->upstream_states->elts;
|
|
122
|
2933
|
|
|
2934 for ( ;; ) {
|
|
296
|
2935 if (state[i].status) {
|
|
|
2936 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
2937
|
|
|
2938 } else {
|
|
296
|
2939 *p++ = '-';
|
|
122
|
2940 }
|
|
|
2941
|
|
296
|
2942 if (++i == r->upstream_states->nelts) {
|
|
122
|
2943 break;
|
|
|
2944 }
|
|
|
2945
|
|
296
|
2946 if (state[i].peer) {
|
|
|
2947 *p++ = ',';
|
|
|
2948 *p++ = ' ';
|
|
|
2949
|
|
|
2950 } else {
|
|
|
2951 *p++ = ' ';
|
|
|
2952 *p++ = ':';
|
|
|
2953 *p++ = ' ';
|
|
|
2954
|
|
|
2955 if (++i == r->upstream_states->nelts) {
|
|
|
2956 break;
|
|
|
2957 }
|
|
|
2958
|
|
|
2959 continue;
|
|
|
2960 }
|
|
122
|
2961 }
|
|
|
2962
|
|
|
2963 v->len = p - v->data;
|
|
|
2964
|
|
|
2965 return NGX_OK;
|
|
|
2966 }
|
|
|
2967
|
|
|
2968
|
|
|
2969 static ngx_int_t
|
|
|
2970 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
2971 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2972 {
|
|
|
2973 u_char *p;
|
|
|
2974 size_t len;
|
|
|
2975 ngx_uint_t i;
|
|
262
|
2976 ngx_msec_int_t ms;
|
|
122
|
2977 ngx_http_upstream_state_t *state;
|
|
|
2978
|
|
|
2979 v->valid = 1;
|
|
340
|
2980 v->no_cacheable = 0;
|
|
122
|
2981 v->not_found = 0;
|
|
|
2982
|
|
296
|
2983 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
2984 v->not_found = 1;
|
|
|
2985 return NGX_OK;
|
|
|
2986 }
|
|
|
2987
|
|
296
|
2988 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
2989
|
|
|
2990 p = ngx_palloc(r->pool, len);
|
|
|
2991 if (p == NULL) {
|
|
|
2992 return NGX_ERROR;
|
|
|
2993 }
|
|
|
2994
|
|
|
2995 v->data = p;
|
|
|
2996
|
|
|
2997 i = 0;
|
|
296
|
2998 state = r->upstream_states->elts;
|
|
122
|
2999
|
|
|
3000 for ( ;; ) {
|
|
296
|
3001 if (state[i].status) {
|
|
346
|
3002 ms = (ngx_msec_int_t)
|
|
|
3003 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3004 ms = (ms >= 0) ? ms : 0;
|
|
|
3005 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3006
|
|
|
3007 } else {
|
|
|
3008 *p++ = '-';
|
|
122
|
3009 }
|
|
|
3010
|
|
296
|
3011 if (++i == r->upstream_states->nelts) {
|
|
122
|
3012 break;
|
|
|
3013 }
|
|
|
3014
|
|
296
|
3015 if (state[i].peer) {
|
|
|
3016 *p++ = ',';
|
|
|
3017 *p++ = ' ';
|
|
|
3018
|
|
|
3019 } else {
|
|
|
3020 *p++ = ' ';
|
|
|
3021 *p++ = ':';
|
|
|
3022 *p++ = ' ';
|
|
|
3023
|
|
|
3024 if (++i == r->upstream_states->nelts) {
|
|
|
3025 break;
|
|
|
3026 }
|
|
|
3027
|
|
|
3028 continue;
|
|
|
3029 }
|
|
122
|
3030 }
|
|
|
3031
|
|
|
3032 v->len = p - v->data;
|
|
|
3033
|
|
|
3034 return NGX_OK;
|
|
|
3035 }
|
|
|
3036
|
|
|
3037
|
|
296
|
3038 ngx_int_t
|
|
|
3039 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3040 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3041 {
|
|
|
3042 if (r->upstream == NULL) {
|
|
|
3043 v->not_found = 1;
|
|
|
3044 return NGX_OK;
|
|
|
3045 }
|
|
|
3046
|
|
|
3047 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3048 &r->upstream->headers_in.headers.part,
|
|
|
3049 sizeof("upstream_http_") - 1);
|
|
|
3050 }
|
|
|
3051
|
|
|
3052
|
|
200
|
3053 static char *
|
|
|
3054 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3055 {
|
|
260
|
3056 char *rv;
|
|
|
3057 void *mconf;
|
|
|
3058 ngx_str_t *value;
|
|
|
3059 ngx_url_t u;
|
|
|
3060 ngx_uint_t m;
|
|
|
3061 ngx_conf_t pcf;
|
|
|
3062 ngx_http_module_t *module;
|
|
|
3063 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3064 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3065
|
|
|
3066 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3067
|
|
|
3068 value = cf->args->elts;
|
|
|
3069 u.host = value[1];
|
|
|
3070 u.no_resolve = 1;
|
|
|
3071
|
|
|
3072 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3073 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3074 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3075 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3076 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3077 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3078 if (uscf == NULL) {
|
|
|
3079 return NGX_CONF_ERROR;
|
|
|
3080 }
|
|
|
3081
|
|
200
|
3082
|
|
|
3083 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3084 if (ctx == NULL) {
|
|
|
3085 return NGX_CONF_ERROR;
|
|
|
3086 }
|
|
|
3087
|
|
260
|
3088 http_ctx = cf->ctx;
|
|
|
3089 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3090
|
|
|
3091 /* the upstream{}'s srv_conf */
|
|
|
3092
|
|
|
3093 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3094 if (ctx->srv_conf == NULL) {
|
|
|
3095 return NGX_CONF_ERROR;
|
|
|
3096 }
|
|
|
3097
|
|
|
3098 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3099
|
|
260
|
3100 uscf->srv_conf = ctx->srv_conf;
|
|
|
3101
|
|
200
|
3102
|
|
|
3103 /* the upstream{}'s loc_conf */
|
|
|
3104
|
|
|
3105 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3106 if (ctx->loc_conf == NULL) {
|
|
|
3107 return NGX_CONF_ERROR;
|
|
|
3108 }
|
|
|
3109
|
|
|
3110 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3111 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3112 continue;
|
|
|
3113 }
|
|
|
3114
|
|
|
3115 module = ngx_modules[m]->ctx;
|
|
|
3116
|
|
260
|
3117 if (module->create_srv_conf) {
|
|
|
3118 mconf = module->create_srv_conf(cf);
|
|
|
3119 if (mconf == NULL) {
|
|
|
3120 return NGX_CONF_ERROR;
|
|
|
3121 }
|
|
|
3122
|
|
|
3123 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3124 }
|
|
|
3125
|
|
200
|
3126 if (module->create_loc_conf) {
|
|
|
3127 mconf = module->create_loc_conf(cf);
|
|
|
3128 if (mconf == NULL) {
|
|
|
3129 return NGX_CONF_ERROR;
|
|
|
3130 }
|
|
|
3131
|
|
|
3132 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3133 }
|
|
|
3134 }
|
|
|
3135
|
|
|
3136
|
|
|
3137 /* parse inside upstream{} */
|
|
|
3138
|
|
|
3139 pcf = *cf;
|
|
|
3140 cf->ctx = ctx;
|
|
|
3141 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3142
|
|
|
3143 rv = ngx_conf_parse(cf, NULL);
|
|
|
3144
|
|
|
3145 *cf = pcf;
|
|
|
3146
|
|
|
3147 if (rv != NGX_CONF_OK) {
|
|
|
3148 return rv;
|
|
|
3149 }
|
|
|
3150
|
|
|
3151 if (uscf->servers == NULL) {
|
|
|
3152 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3153 "no servers are inside upstream");
|
|
|
3154 return NGX_CONF_ERROR;
|
|
|
3155 }
|
|
|
3156
|
|
|
3157 return rv;
|
|
|
3158 }
|
|
|
3159
|
|
|
3160
|
|
|
3161 static char *
|
|
|
3162 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3163 {
|
|
|
3164 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3165
|
|
260
|
3166 time_t fail_timeout;
|
|
|
3167 ngx_str_t *value, s;
|
|
|
3168 ngx_url_t u;
|
|
|
3169 ngx_int_t weight, max_fails;
|
|
|
3170 ngx_uint_t i;
|
|
|
3171 ngx_http_upstream_server_t *us;
|
|
200
|
3172
|
|
|
3173 if (uscf->servers == NULL) {
|
|
260
|
3174 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3175 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3176 if (uscf->servers == NULL) {
|
|
|
3177 return NGX_CONF_ERROR;
|
|
|
3178 }
|
|
|
3179 }
|
|
|
3180
|
|
260
|
3181 us = ngx_array_push(uscf->servers);
|
|
|
3182 if (us == NULL) {
|
|
200
|
3183 return NGX_CONF_ERROR;
|
|
|
3184 }
|
|
|
3185
|
|
260
|
3186 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3187
|
|
200
|
3188 value = cf->args->elts;
|
|
|
3189
|
|
|
3190 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3191
|
|
|
3192 u.url = value[1];
|
|
266
|
3193 u.default_port = 80;
|
|
200
|
3194
|
|
340
|
3195 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3196 if (u.err) {
|
|
|
3197 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3198 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3199 }
|
|
|
3200
|
|
|
3201 return NGX_CONF_ERROR;
|
|
|
3202 }
|
|
|
3203
|
|
212
|
3204 weight = 1;
|
|
260
|
3205 max_fails = 1;
|
|
|
3206 fail_timeout = 10;
|
|
|
3207
|
|
|
3208 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3209
|
|
|
3210 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3211
|
|
|
3212 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3213 goto invalid;
|
|
|
3214 }
|
|
|
3215
|
|
|
3216 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3217
|
|
|
3218 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3219 goto invalid;
|
|
|
3220 }
|
|
|
3221
|
|
260
|
3222 continue;
|
|
|
3223 }
|
|
|
3224
|
|
|
3225 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3226
|
|
|
3227 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3228 goto invalid;
|
|
|
3229 }
|
|
|
3230
|
|
|
3231 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3232
|
|
|
3233 if (max_fails == NGX_ERROR) {
|
|
|
3234 goto invalid;
|
|
|
3235 }
|
|
|
3236
|
|
|
3237 continue;
|
|
212
|
3238 }
|
|
260
|
3239
|
|
|
3240 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3241
|
|
|
3242 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3243 goto invalid;
|
|
|
3244 }
|
|
|
3245
|
|
|
3246 s.len = value[i].len - 13;
|
|
|
3247 s.data = &value[i].data[13];
|
|
|
3248
|
|
|
3249 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3250
|
|
|
3251 if (fail_timeout < 0) {
|
|
|
3252 goto invalid;
|
|
|
3253 }
|
|
|
3254
|
|
|
3255 continue;
|
|
|
3256 }
|
|
|
3257
|
|
326
|
3258 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3259
|
|
|
3260 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3261 goto invalid;
|
|
|
3262 }
|
|
|
3263
|
|
|
3264 us->backup = 1;
|
|
|
3265
|
|
|
3266 continue;
|
|
|
3267 }
|
|
|
3268
|
|
260
|
3269 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3270
|
|
|
3271 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3272 goto invalid;
|
|
|
3273 }
|
|
|
3274
|
|
|
3275 us->down = 1;
|
|
|
3276
|
|
|
3277 continue;
|
|
|
3278 }
|
|
|
3279
|
|
|
3280 goto invalid;
|
|
212
|
3281 }
|
|
|
3282
|
|
260
|
3283 us->addrs = u.addrs;
|
|
|
3284 us->naddrs = u.naddrs;
|
|
|
3285 us->weight = weight;
|
|
|
3286 us->max_fails = max_fails;
|
|
|
3287 us->fail_timeout = fail_timeout;
|
|
200
|
3288
|
|
|
3289 return NGX_CONF_OK;
|
|
212
|
3290
|
|
|
3291 invalid:
|
|
|
3292
|
|
260
|
3293 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3294 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3295
|
|
|
3296 return NGX_CONF_ERROR;
|
|
200
|
3297 }
|
|
|
3298
|
|
|
3299
|
|
|
3300 ngx_http_upstream_srv_conf_t *
|
|
260
|
3301 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3302 {
|
|
|
3303 ngx_uint_t i;
|
|
260
|
3304 ngx_http_upstream_server_t *us;
|
|
200
|
3305 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3306 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3307
|
|
260
|
3308 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3309
|
|
340
|
3310 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3311 if (u->err) {
|
|
|
3312 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3313 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3314 }
|
|
|
3315
|
|
|
3316 return NULL;
|
|
|
3317 }
|
|
|
3318 }
|
|
|
3319
|
|
|
3320 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3321
|
|
|
3322 uscfp = umcf->upstreams.elts;
|
|
|
3323
|
|
|
3324 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3325
|
|
|
3326 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3327 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3328 != 0)
|
|
|
3329 {
|
|
200
|
3330 continue;
|
|
|
3331 }
|
|
|
3332
|
|
260
|
3333 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3334 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3335 {
|
|
260
|
3336 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3337 "duplicate upstream \"%V\"", &u->host);
|
|
|
3338 return NULL;
|
|
200
|
3339 }
|
|
260
|
3340
|
|
266
|
3341 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3342 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3343 "upstream \"%V\" may not have port %d",
|
|
|
3344 &u->host, u->port);
|
|
|
3345 return NULL;
|
|
|
3346 }
|
|
|
3347
|
|
|
3348 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3349 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3350 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3351 &u->host, uscfp[i]->port,
|
|
336
|
3352 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3353 return NULL;
|
|
|
3354 }
|
|
|
3355
|
|
|
3356 if (uscfp[i]->port != u->port) {
|
|
|
3357 continue;
|
|
260
|
3358 }
|
|
|
3359
|
|
324
|
3360 if (uscfp[i]->default_port && u->default_port
|
|
|
3361 && uscfp[i]->default_port != u->default_port)
|
|
|
3362 {
|
|
|
3363 continue;
|
|
|
3364 }
|
|
|
3365
|
|
260
|
3366 return uscfp[i];
|
|
200
|
3367 }
|
|
|
3368
|
|
|
3369 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3370 if (uscf == NULL) {
|
|
|
3371 return NULL;
|
|
|
3372 }
|
|
|
3373
|
|
260
|
3374 uscf->flags = flags;
|
|
200
|
3375 uscf->host = u->host;
|
|
336
|
3376 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3377 uscf->line = cf->conf_file->line;
|
|
266
|
3378 uscf->port = u->port;
|
|
|
3379 uscf->default_port = u->default_port;
|
|
260
|
3380
|
|
|
3381 if (u->naddrs == 1) {
|
|
|
3382 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3383 sizeof(ngx_http_upstream_server_t));
|
|
|
3384 if (uscf->servers == NULL) {
|
|
|
3385 return NGX_CONF_ERROR;
|
|
|
3386 }
|
|
|
3387
|
|
|
3388 us = ngx_array_push(uscf->servers);
|
|
|
3389 if (us == NULL) {
|
|
|
3390 return NGX_CONF_ERROR;
|
|
|
3391 }
|
|
|
3392
|
|
|
3393 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3394
|
|
|
3395 us->addrs = u->addrs;
|
|
|
3396 us->naddrs = u->naddrs;
|
|
|
3397 }
|
|
200
|
3398
|
|
|
3399 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3400 if (uscfp == NULL) {
|
|
|
3401 return NULL;
|
|
|
3402 }
|
|
|
3403
|
|
|
3404 *uscfp = uscf;
|
|
|
3405
|
|
|
3406 return uscf;
|
|
|
3407 }
|
|
|
3408
|
|
|
3409
|
|
58
|
3410 static void *
|
|
|
3411 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3412 {
|
|
|
3413 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3414
|
|
|
3415 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3416 if (umcf == NULL) {
|
|
|
3417 return NULL;
|
|
|
3418 }
|
|
|
3419
|
|
200
|
3420 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3421 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3422 != NGX_OK)
|
|
|
3423 {
|
|
|
3424 return NGX_CONF_ERROR;
|
|
|
3425 }
|
|
|
3426
|
|
58
|
3427 return umcf;
|
|
|
3428 }
|
|
|
3429
|
|
|
3430
|
|
|
3431 static char *
|
|
200
|
3432 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3433 {
|
|
|
3434 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3435
|
|
200
|
3436 ngx_uint_t i;
|
|
|
3437 ngx_array_t headers_in;
|
|
|
3438 ngx_hash_key_t *hk;
|
|
|
3439 ngx_hash_init_t hash;
|
|
260
|
3440 ngx_http_upstream_init_pt init;
|
|
200
|
3441 ngx_http_upstream_header_t *header;
|
|
|
3442 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3443
|
|
|
3444 uscfp = umcf->upstreams.elts;
|
|
|
3445
|
|
|
3446 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3447
|
|
|
3448 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3449 ngx_http_upstream_init_round_robin;
|
|
|
3450
|
|
|
3451 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3452 return NGX_CONF_ERROR;
|
|
|
3453 }
|
|
|
3454 }
|
|
198
|
3455
|
|
212
|
3456
|
|
260
|
3457 /* upstream_headers_in_hash */
|
|
|
3458
|
|
198
|
3459 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3460 != NGX_OK)
|
|
58
|
3461 {
|
|
|
3462 return NGX_CONF_ERROR;
|
|
|
3463 }
|
|
|
3464
|
|
198
|
3465 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3466 hk = ngx_array_push(&headers_in);
|
|
|
3467 if (hk == NULL) {
|
|
|
3468 return NGX_CONF_ERROR;
|
|
|
3469 }
|
|
|
3470
|
|
|
3471 hk->key = header->name;
|
|
|
3472 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3473 hk->value = header;
|
|
|
3474 }
|
|
|
3475
|
|
|
3476 hash.hash = &umcf->headers_in_hash;
|
|
|
3477 hash.key = ngx_hash_key_lc;
|
|
|
3478 hash.max_size = 512;
|
|
244
|
3479 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3480 hash.name = "upstream_headers_in_hash";
|
|
|
3481 hash.pool = cf->pool;
|
|
|
3482 hash.temp_pool = NULL;
|
|
|
3483
|
|
|
3484 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3485 return NGX_CONF_ERROR;
|
|
|
3486 }
|
|
58
|
3487
|
|
|
3488 return NGX_CONF_OK;
|
|
|
3489 }
|
