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28
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #include <ngx_config.h>
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8 #include <ngx_core.h>
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9 #include <ngx_http.h>
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10
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11
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348
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12 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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13 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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14 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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15 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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16 ngx_event_t *ev);
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28
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17 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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18 ngx_http_upstream_t *u);
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58
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19 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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20 ngx_http_upstream_t *u);
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28
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21 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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22 ngx_http_upstream_t *u);
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28
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23 static void ngx_http_upstream_send_request_handler(ngx_event_t *wev);
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24 static void ngx_http_upstream_process_header(ngx_event_t *rev);
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412
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25 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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26 ngx_http_upstream_t *u);
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27 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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28 ngx_http_upstream_t *u);
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294
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29 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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248
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30 static void ngx_http_upstream_process_body_in_memory(ngx_event_t *rev);
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28
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31 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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32 ngx_http_upstream_t *u);
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130
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33 static void
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34 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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428
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35 static void ngx_http_upstream_process_non_buffered_upstream(ngx_event_t *ev);
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36 static void
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37 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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38 ngx_uint_t do_write);
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130
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39 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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40 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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41 ssize_t bytes);
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58
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42 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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428
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43 static void ngx_http_upstream_process_upstream(ngx_event_t *rev);
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44 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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45 static void ngx_http_upstream_store(ngx_http_request_t *r,
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46 ngx_http_upstream_t *u);
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28
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47 static void ngx_http_upstream_dummy_handler(ngx_event_t *wev);
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48 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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49 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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50 static void ngx_http_upstream_cleanup(void *data);
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28
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51 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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52 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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53
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58
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54 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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55 ngx_table_elt_t *h, ngx_uint_t offset);
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56 static ngx_int_t
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57 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
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58 ngx_table_elt_t *h, ngx_uint_t offset);
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59 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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60 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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61 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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62 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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63 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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64 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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65 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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66 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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67 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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68 ngx_table_elt_t *h, ngx_uint_t offset);
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69 static ngx_int_t
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70 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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71 ngx_table_elt_t *h, ngx_uint_t offset);
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72 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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73 ngx_table_elt_t *h, ngx_uint_t offset);
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74 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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76 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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77 ngx_table_elt_t *h, ngx_uint_t offset);
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78 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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79 ngx_table_elt_t *h, ngx_uint_t offset);
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80 #if (NGX_HTTP_GZIP)
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81 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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82 ngx_table_elt_t *h, ngx_uint_t offset);
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83 #endif
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84
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122
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85 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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86 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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87 ngx_http_variable_value_t *v, uintptr_t data);
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122
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88 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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89 ngx_http_variable_value_t *v, uintptr_t data);
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90 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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91 ngx_http_variable_value_t *v, uintptr_t data);
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92
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200
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93 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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94 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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95 void *conf);
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96
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58
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97 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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98 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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99
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126
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100 #if (NGX_HTTP_SSL)
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140
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101 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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102 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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103 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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104 #endif
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105
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58
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106
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107 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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108
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109 { ngx_string("Status"),
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110 ngx_http_upstream_process_header_line,
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111 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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112 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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113
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114 { ngx_string("Content-Type"),
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115 ngx_http_upstream_process_header_line,
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116 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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117 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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118
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119 { ngx_string("Content-Length"),
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120 ngx_http_upstream_process_header_line,
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121 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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122 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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123
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124 { ngx_string("Date"),
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125 ngx_http_upstream_process_header_line,
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126 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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127 ngx_http_upstream_copy_header_line,
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128 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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129
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318
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130 { ngx_string("Last-Modified"),
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131 ngx_http_upstream_process_header_line,
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132 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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133 ngx_http_upstream_copy_header_line,
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134 offsetof(ngx_http_headers_out_t, last_modified), 0 },
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135
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58
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136 { ngx_string("Server"),
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137 ngx_http_upstream_process_header_line,
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138 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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139 ngx_http_upstream_copy_header_line,
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140 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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141
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78
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142 { ngx_string("WWW-Authenticate"),
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143 ngx_http_upstream_process_header_line,
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144 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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145 ngx_http_upstream_copy_header_line, 0, 0 },
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146
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58
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147 { ngx_string("Location"),
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392
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148 ngx_http_upstream_process_header_line,
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149 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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150 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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151
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152 { ngx_string("Refresh"),
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153 ngx_http_upstream_ignore_header_line, 0,
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64
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154 ngx_http_upstream_rewrite_refresh, 0, 0 },
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155
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156 { ngx_string("Set-Cookie"),
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157 ngx_http_upstream_ignore_header_line, 0,
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80
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158 ngx_http_upstream_copy_header_line, 0, 1 },
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159
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160 { ngx_string("Content-Disposition"),
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161 ngx_http_upstream_ignore_header_line, 0,
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162 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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163
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164 { ngx_string("Cache-Control"),
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165 ngx_http_upstream_process_multi_header_lines,
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166 offsetof(ngx_http_upstream_headers_in_t, cache_control),
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167 ngx_http_upstream_copy_multi_header_lines,
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64
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168 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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169
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122
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170 { ngx_string("Expires"),
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171 ngx_http_upstream_process_header_line,
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172 offsetof(ngx_http_upstream_headers_in_t, expires),
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173 ngx_http_upstream_copy_header_line,
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174 offsetof(ngx_http_headers_out_t, expires), 1 },
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175
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126
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176 { ngx_string("Accept-Ranges"),
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177 ngx_http_upstream_process_header_line,
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178 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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179 ngx_http_upstream_copy_header_line,
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180 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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181
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58
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182 { ngx_string("Connection"),
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183 ngx_http_upstream_ignore_header_line, 0,
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64
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184 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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185
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190
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186 { ngx_string("Keep-Alive"),
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187 ngx_http_upstream_ignore_header_line, 0,
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188 ngx_http_upstream_ignore_header_line, 0, 0 },
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189
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58
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190 { ngx_string("X-Powered-By"),
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191 ngx_http_upstream_ignore_header_line, 0,
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198
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192 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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193
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194 { ngx_string("X-Accel-Expires"),
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195 ngx_http_upstream_process_header_line,
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196 offsetof(ngx_http_upstream_headers_in_t, x_accel_expires),
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198
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197 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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198
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199 { ngx_string("X-Accel-Redirect"),
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200 ngx_http_upstream_process_header_line,
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201 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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202 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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203
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76
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204 { ngx_string("X-Accel-Limit-Rate"),
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205 ngx_http_upstream_process_limit_rate, 0,
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206 ngx_http_upstream_ignore_header_line, 0, 0 },
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207
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198
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208 { ngx_string("X-Accel-Buffering"),
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209 ngx_http_upstream_process_buffering, 0,
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210 ngx_http_upstream_ignore_header_line, 0, 0 },
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211
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206
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212 { ngx_string("X-Accel-Charset"),
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213 ngx_http_upstream_process_charset, 0,
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214 ngx_http_upstream_ignore_header_line, 0, 0 },
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215
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58
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216 #if (NGX_HTTP_GZIP)
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217 { ngx_string("Content-Encoding"),
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218 ngx_http_upstream_process_header_line,
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219 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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220 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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221 #endif
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222
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64
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223 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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224 };
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28
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225
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226
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200
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227 static ngx_command_t ngx_http_upstream_commands[] = {
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228
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229 { ngx_string("upstream"),
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230 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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231 ngx_http_upstream,
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232 0,
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233 0,
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234 NULL },
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235
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236 { ngx_string("server"),
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260
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237 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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238 ngx_http_upstream_server,
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239 NGX_HTTP_SRV_CONF_OFFSET,
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240 0,
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241 NULL },
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242
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243 ngx_null_command
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244 };
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245
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246
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247 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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248 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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249 NULL, /* postconfiguration */
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250
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251 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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252 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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253
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254 NULL, /* create server configuration */
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255 NULL, /* merge server configuration */
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256
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257 NULL, /* create location configuration */
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258 NULL /* merge location configuration */
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259 };
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126
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260
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28
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261
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262 ngx_module_t ngx_http_upstream_module = {
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58
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263 NGX_MODULE_V1,
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28
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264 &ngx_http_upstream_module_ctx, /* module context */
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200
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265 ngx_http_upstream_commands, /* module directives */
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28
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266 NGX_HTTP_MODULE, /* module type */
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90
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267 NULL, /* init master */
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28
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268 NULL, /* init module */
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90
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269 NULL, /* init process */
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270 NULL, /* init thread */
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271 NULL, /* exit thread */
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272 NULL, /* exit process */
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273 NULL, /* exit master */
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274 NGX_MODULE_V1_PADDING
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28
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275 };
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276
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277
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122
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278 static ngx_http_variable_t ngx_http_upstream_vars[] = {
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279
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298
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280 { ngx_string("upstream_addr"), NULL,
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426
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281 ngx_http_upstream_addr_variable, 0,
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282 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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298
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283
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186
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284 { ngx_string("upstream_status"), NULL,
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426
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285 ngx_http_upstream_status_variable, 0,
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286 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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287
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186
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288 { ngx_string("upstream_response_time"), NULL,
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426
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289 ngx_http_upstream_response_time_variable, 0,
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290 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
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122
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291
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186
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292 { ngx_null_string, NULL, NULL, 0, 0, 0 }
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122
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293 };
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294
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295
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412
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296 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
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297 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
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298 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
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299 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
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300 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
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301 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
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302 { 0, 0 }
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303 };
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304
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36
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305 void
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306 ngx_http_upstream_init(ngx_http_request_t *r)
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28
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307 {
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348
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308 ngx_str_t *host;
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309 ngx_uint_t i;
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310 ngx_connection_t *c;
|
|
|
311 ngx_resolver_ctx_t *ctx, temp;
|
|
|
312 ngx_http_cleanup_t *cln;
|
|
|
313 ngx_http_upstream_t *u;
|
|
|
314 ngx_http_core_loc_conf_t *clcf;
|
|
|
315 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
316 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
317
|
|
|
318 c = r->connection;
|
|
|
319
|
|
|
320 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
321 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
322
|
|
|
323 if (c->read->timer_set) {
|
|
|
324 ngx_del_timer(c->read);
|
|
|
325 }
|
|
|
326
|
|
178
|
327 u = r->upstream;
|
|
|
328
|
|
|
329 if (!r->post_action && !u->conf->ignore_client_abort) {
|
|
164
|
330 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
331 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
332 }
|
|
126
|
333
|
|
28
|
334 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
335
|
|
|
336 if (!c->write->active) {
|
|
80
|
337 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
338 == NGX_ERROR)
|
|
28
|
339 {
|
|
|
340 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
341 return;
|
|
|
342 }
|
|
|
343 }
|
|
|
344 }
|
|
|
345
|
|
86
|
346 if (r->request_body) {
|
|
|
347 u->request_bufs = r->request_body->bufs;
|
|
|
348 }
|
|
58
|
349
|
|
86
|
350 if (u->create_request(r) != NGX_OK) {
|
|
28
|
351 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
352 return;
|
|
|
353 }
|
|
|
354
|
|
58
|
355 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
356
|
|
|
357 u->output.pool = r->pool;
|
|
|
358 u->output.bufs.num = 1;
|
|
58
|
359 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
360 u->output.output_filter = ngx_chain_writer;
|
|
|
361 u->output.filter_ctx = &u->writer;
|
|
|
362
|
|
|
363 u->writer.pool = r->pool;
|
|
|
364
|
|
296
|
365 if (r->upstream_states == NULL) {
|
|
|
366
|
|
|
367 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
368 sizeof(ngx_http_upstream_state_t));
|
|
|
369 if (r->upstream_states == NULL) {
|
|
|
370 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
371 return;
|
|
|
372 }
|
|
|
373
|
|
|
374 } else {
|
|
|
375
|
|
|
376 u->state = ngx_array_push(r->upstream_states);
|
|
|
377 if (u->state == NULL) {
|
|
|
378 ngx_http_upstream_finalize_request(r, u,
|
|
|
379 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
380 return;
|
|
|
381 }
|
|
|
382
|
|
|
383 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
384 }
|
|
|
385
|
|
142
|
386 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
387 if (cln == NULL) {
|
|
|
388 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
389 return;
|
|
|
390 }
|
|
|
391
|
|
|
392 cln->handler = ngx_http_upstream_cleanup;
|
|
|
393 cln->data = r;
|
|
|
394 u->cleanup = &cln->handler;
|
|
|
395
|
|
320
|
396 u->store = (u->conf->store || u->conf->store_lengths);
|
|
318
|
397
|
|
348
|
398 if (u->resolved == NULL) {
|
|
|
399
|
|
|
400 uscf = u->conf->upstream;
|
|
|
401
|
|
|
402 } else {
|
|
|
403
|
|
356
|
404 host = &u->resolved->host;
|
|
348
|
405
|
|
|
406 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
407
|
|
|
408 uscfp = umcf->upstreams.elts;
|
|
|
409
|
|
|
410 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
411
|
|
|
412 uscf = uscfp[i];
|
|
|
413
|
|
|
414 if (uscf->host.len == host->len
|
|
416
|
415 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
416 || uscf->port == u->resolved->port)
|
|
348
|
417 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
418 {
|
|
|
419 goto found;
|
|
|
420 }
|
|
|
421 }
|
|
|
422
|
|
|
423 temp.name = *host;
|
|
|
424
|
|
|
425 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
426 if (ctx == NULL) {
|
|
|
427 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
428 return;
|
|
|
429 }
|
|
|
430
|
|
354
|
431 if (ctx == NGX_NO_RESOLVER) {
|
|
|
432 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
|
433 "no resolver defined to resolve %V", host);
|
|
|
434
|
|
|
435 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
436 return;
|
|
|
437 }
|
|
|
438
|
|
348
|
439 ctx->name = *host;
|
|
|
440 ctx->type = NGX_RESOLVE_A;
|
|
|
441 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
442 ctx->data = r;
|
|
|
443 ctx->timeout = clcf->resolver_timeout;
|
|
|
444
|
|
372
|
445 u->resolved->ctx = ctx;
|
|
|
446
|
|
348
|
447 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
448 u->resolved->ctx = NULL;
|
|
348
|
449 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
450 return;
|
|
|
451 }
|
|
|
452
|
|
|
453 return;
|
|
|
454 }
|
|
|
455
|
|
|
456 found:
|
|
|
457
|
|
|
458 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
|
459 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
28
|
463 ngx_http_upstream_connect(r, u);
|
|
|
464 }
|
|
|
465
|
|
|
466
|
|
36
|
467 static void
|
|
348
|
468 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
469 {
|
|
|
470 ngx_http_request_t *r;
|
|
|
471 ngx_http_upstream_resolved_t *ur;
|
|
|
472
|
|
|
473 r = ctx->data;
|
|
|
474
|
|
|
475 r->upstream->resolved->ctx = NULL;
|
|
|
476
|
|
|
477 if (ctx->state) {
|
|
|
478 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
479 "%V could not be resolved (%i: %s)",
|
|
|
480 &ctx->name, ctx->state,
|
|
|
481 ngx_resolver_strerror(ctx->state));
|
|
|
482
|
|
|
483 ngx_resolve_name_done(ctx);
|
|
|
484 ngx_http_finalize_request(r, NGX_HTTP_BAD_GATEWAY);
|
|
|
485 return;
|
|
|
486 }
|
|
|
487
|
|
|
488 ur = r->upstream->resolved;
|
|
|
489 ur->naddrs = ctx->naddrs;
|
|
|
490 ur->addrs = ctx->addrs;
|
|
|
491
|
|
|
492 #if (NGX_DEBUG)
|
|
|
493 {
|
|
|
494 in_addr_t addr;
|
|
|
495 ngx_uint_t i;
|
|
|
496
|
|
|
497 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
498 addr = ntohl(ur->addrs[i]);
|
|
|
499
|
|
|
500 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
501 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
502 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
503 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
504 }
|
|
|
505 }
|
|
|
506 #endif
|
|
|
507
|
|
|
508 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
|
509 ngx_resolve_name_done(ctx);
|
|
|
510 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
511 return;
|
|
|
512 }
|
|
|
513
|
|
|
514 ngx_resolve_name_done(ctx);
|
|
|
515
|
|
|
516 ngx_http_upstream_connect(r, r->upstream);
|
|
|
517 }
|
|
|
518
|
|
|
519
|
|
|
520 static void
|
|
426
|
521 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
522 {
|
|
|
523 ngx_connection_t *c;
|
|
|
524 ngx_http_request_t *r;
|
|
|
525 ngx_http_log_ctx_t *ctx;
|
|
|
526 ngx_http_upstream_t *u;
|
|
|
527
|
|
|
528 c = ev->data;
|
|
|
529 r = c->data;
|
|
|
530
|
|
|
531 u = r->upstream;
|
|
|
532 c = r->connection;
|
|
|
533
|
|
|
534 ctx = c->log->data;
|
|
|
535 ctx->current_request = r;
|
|
|
536
|
|
|
537 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
538 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
539
|
|
|
540 if (ev->write) {
|
|
|
541 u->write_event_handler(ev);
|
|
|
542
|
|
|
543 } else {
|
|
|
544 u->read_event_handler(ev);
|
|
|
545 }
|
|
|
546
|
|
|
547 ngx_http_run_posted_requests(c);
|
|
|
548 }
|
|
|
549
|
|
|
550
|
|
|
551 static void
|
|
58
|
552 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
553 {
|
|
|
554 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
555 }
|
|
|
556
|
|
|
557
|
|
|
558 static void
|
|
|
559 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
560 {
|
|
|
561 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
562 }
|
|
|
563
|
|
|
564
|
|
|
565 static void
|
|
|
566 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
567 ngx_event_t *ev)
|
|
28
|
568 {
|
|
|
569 int n;
|
|
|
570 char buf[1];
|
|
126
|
571 ngx_err_t err;
|
|
28
|
572 ngx_connection_t *c;
|
|
|
573 ngx_http_upstream_t *u;
|
|
|
574
|
|
76
|
575 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
576 "http upstream check client, write event:%d, \"%V\"",
|
|
|
577 ev->write, &r->uri);
|
|
28
|
578
|
|
58
|
579 c = r->connection;
|
|
32
|
580 u = r->upstream;
|
|
|
581
|
|
132
|
582 if (c->error) {
|
|
76
|
583 ngx_http_upstream_finalize_request(r, u,
|
|
|
584 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
585 return;
|
|
|
586 }
|
|
|
587
|
|
32
|
588 if (u->peer.connection == NULL) {
|
|
|
589 return;
|
|
|
590 }
|
|
|
591
|
|
28
|
592 #if (NGX_HAVE_KQUEUE)
|
|
|
593
|
|
|
594 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
595
|
|
|
596 if (!ev->pending_eof) {
|
|
|
597 return;
|
|
|
598 }
|
|
|
599
|
|
|
600 ev->eof = 1;
|
|
132
|
601 c->error = 1;
|
|
28
|
602
|
|
|
603 if (ev->kq_errno) {
|
|
|
604 ev->error = 1;
|
|
|
605 }
|
|
|
606
|
|
340
|
607 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
608 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
609 "kevent() reported that client closed prematurely "
|
|
|
610 "connection, so upstream connection is closed too");
|
|
28
|
611 ngx_http_upstream_finalize_request(r, u,
|
|
|
612 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
613 return;
|
|
|
614 }
|
|
|
615
|
|
|
616 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
617 "kevent() reported that client closed "
|
|
|
618 "prematurely connection");
|
|
|
619
|
|
|
620 if (u->peer.connection == NULL) {
|
|
|
621 ngx_http_upstream_finalize_request(r, u,
|
|
|
622 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
623 return;
|
|
|
624 }
|
|
|
625
|
|
|
626 return;
|
|
|
627 }
|
|
|
628
|
|
|
629 #endif
|
|
|
630
|
|
|
631 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
632
|
|
|
633 err = ngx_socket_errno;
|
|
|
634
|
|
286
|
635 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
636 "http upstream recv(): %d", n);
|
|
|
637
|
|
28
|
638 /*
|
|
|
639 * we do not need to disable the write event because
|
|
|
640 * that event has NGX_USE_CLEAR_EVENT type
|
|
|
641 */
|
|
|
642
|
|
|
643 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
644 return;
|
|
|
645 }
|
|
|
646
|
|
|
647 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
648 if (ngx_del_event(ev, NGX_READ_EVENT, 0) == NGX_ERROR) {
|
|
|
649 ngx_http_upstream_finalize_request(r, u,
|
|
|
650 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
651 return;
|
|
|
652 }
|
|
|
653 }
|
|
|
654
|
|
|
655 if (n > 0) {
|
|
|
656 return;
|
|
|
657 }
|
|
|
658
|
|
|
659 if (n == -1) {
|
|
|
660 if (err == NGX_EAGAIN) {
|
|
|
661 return;
|
|
|
662 }
|
|
|
663
|
|
|
664 ev->error = 1;
|
|
|
665
|
|
32
|
666 } else { /* n == 0 */
|
|
28
|
667 err = 0;
|
|
|
668 }
|
|
|
669
|
|
78
|
670 ev->eof = 1;
|
|
132
|
671 c->error = 1;
|
|
78
|
672
|
|
340
|
673 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
674 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
675 "client closed prematurely connection, "
|
|
|
676 "so upstream connection is closed too");
|
|
|
677 ngx_http_upstream_finalize_request(r, u,
|
|
|
678 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
679 return;
|
|
|
680 }
|
|
|
681
|
|
|
682 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
683 "client closed prematurely connection");
|
|
|
684
|
|
|
685 if (u->peer.connection == NULL) {
|
|
|
686 ngx_http_upstream_finalize_request(r, u,
|
|
|
687 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
688 return;
|
|
|
689 }
|
|
|
690 }
|
|
|
691
|
|
|
692
|
|
36
|
693 static void
|
|
|
694 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
695 {
|
|
140
|
696 ngx_int_t rc;
|
|
214
|
697 ngx_time_t *tp;
|
|
140
|
698 ngx_connection_t *c;
|
|
28
|
699
|
|
32
|
700 r->connection->log->action = "connecting to upstream";
|
|
28
|
701
|
|
|
702 r->connection->single_connection = 0;
|
|
|
703
|
|
262
|
704 if (u->state && u->state->response_sec) {
|
|
214
|
705 tp = ngx_timeofday();
|
|
262
|
706 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
707 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
708 }
|
|
|
709
|
|
296
|
710 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
711 if (u->state == NULL) {
|
|
|
712 ngx_http_upstream_finalize_request(r, u,
|
|
|
713 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
714 return;
|
|
|
715 }
|
|
|
716
|
|
|
717 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
718
|
|
|
719 tp = ngx_timeofday();
|
|
262
|
720 u->state->response_sec = tp->sec;
|
|
|
721 u->state->response_msec = tp->msec;
|
|
214
|
722
|
|
28
|
723 rc = ngx_event_connect_peer(&u->peer);
|
|
|
724
|
|
|
725 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
726 "http upstream connect: %i", rc);
|
|
|
727
|
|
|
728 if (rc == NGX_ERROR) {
|
|
|
729 ngx_http_upstream_finalize_request(r, u,
|
|
|
730 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
731 return;
|
|
|
732 }
|
|
|
733
|
|
356
|
734 u->state->peer = u->peer.name;
|
|
|
735
|
|
92
|
736 if (rc == NGX_BUSY) {
|
|
|
737 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
738 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
739 return;
|
|
92
|
740 }
|
|
|
741
|
|
326
|
742 if (rc == NGX_DECLINED) {
|
|
28
|
743 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
744 return;
|
|
|
745 }
|
|
|
746
|
|
126
|
747 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
748
|
|
28
|
749 c = u->peer.connection;
|
|
|
750
|
|
|
751 c->data = r;
|
|
140
|
752
|
|
426
|
753 c->write->handler = ngx_http_upstream_handler;
|
|
|
754 c->read->handler = ngx_http_upstream_handler;
|
|
|
755
|
|
|
756 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
757 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
758
|
|
326
|
759 c->sendfile &= r->connection->sendfile;
|
|
372
|
760 u->output.sendfile = c->sendfile;
|
|
28
|
761
|
|
|
762 c->pool = r->pool;
|
|
|
763 c->read->log = c->write->log = c->log = r->connection->log;
|
|
|
764
|
|
|
765 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
766
|
|
|
767 u->writer.out = NULL;
|
|
|
768 u->writer.last = &u->writer.out;
|
|
|
769 u->writer.connection = c;
|
|
|
770 u->writer.limit = 0;
|
|
|
771
|
|
|
772 if (u->request_sent) {
|
|
58
|
773 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
774 ngx_http_upstream_finalize_request(r, u,
|
|
|
775 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
776 return;
|
|
|
777 }
|
|
28
|
778 }
|
|
|
779
|
|
276
|
780 if (r->request_body
|
|
|
781 && r->request_body->buf
|
|
|
782 && r->request_body->temp_file
|
|
|
783 && r == r->main)
|
|
|
784 {
|
|
122
|
785 /*
|
|
|
786 * the r->request_body->buf can be reused for one request only,
|
|
|
787 * the subrequests should allocate their own temporay bufs
|
|
|
788 */
|
|
|
789
|
|
|
790 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
791 if (u->output.free == NULL) {
|
|
|
792 ngx_http_upstream_finalize_request(r, u,
|
|
|
793 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
794 return;
|
|
28
|
795 }
|
|
122
|
796
|
|
|
797 u->output.free->buf = r->request_body->buf;
|
|
|
798 u->output.free->next = NULL;
|
|
|
799 u->output.allocated = 1;
|
|
|
800
|
|
|
801 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
802 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
803 r->request_body->buf->tag = u->output.tag;
|
|
28
|
804 }
|
|
|
805
|
|
|
806 u->request_sent = 0;
|
|
|
807
|
|
|
808 if (rc == NGX_AGAIN) {
|
|
|
809 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
810 return;
|
|
|
811 }
|
|
|
812
|
|
126
|
813 #if (NGX_HTTP_SSL)
|
|
|
814
|
|
348
|
815 if (u->ssl && c->ssl == NULL) {
|
|
140
|
816 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
817 return;
|
|
|
818 }
|
|
|
819
|
|
|
820 #endif
|
|
|
821
|
|
28
|
822 ngx_http_upstream_send_request(r, u);
|
|
|
823 }
|
|
|
824
|
|
|
825
|
|
126
|
826 #if (NGX_HTTP_SSL)
|
|
|
827
|
|
|
828 static void
|
|
140
|
829 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
830 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
831 {
|
|
260
|
832 ngx_int_t rc;
|
|
140
|
833
|
|
|
834 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
835 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
|
836 == NGX_ERROR)
|
|
|
837 {
|
|
|
838 ngx_http_upstream_finalize_request(r, u,
|
|
|
839 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
840 return;
|
|
|
841 }
|
|
|
842
|
|
|
843 c->sendfile = 0;
|
|
168
|
844 u->output.sendfile = 0;
|
|
140
|
845
|
|
398
|
846 if (u->conf->ssl_session_reuse) {
|
|
|
847 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
848 ngx_http_upstream_finalize_request(r, u,
|
|
|
849 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
850 return;
|
|
|
851 }
|
|
140
|
852 }
|
|
|
853
|
|
190
|
854 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
855
|
|
140
|
856 rc = ngx_ssl_handshake(c);
|
|
|
857
|
|
|
858 if (rc == NGX_AGAIN) {
|
|
|
859 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
860 return;
|
|
|
861 }
|
|
|
862
|
|
|
863 ngx_http_upstream_ssl_handshake(c);
|
|
|
864 }
|
|
|
865
|
|
|
866
|
|
|
867 static void
|
|
126
|
868 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
869 {
|
|
|
870 ngx_http_request_t *r;
|
|
|
871 ngx_http_upstream_t *u;
|
|
|
872
|
|
|
873 r = c->data;
|
|
|
874 u = r->upstream;
|
|
|
875
|
|
|
876 if (c->ssl->handshaked) {
|
|
|
877
|
|
398
|
878 if (u->conf->ssl_session_reuse) {
|
|
|
879 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
880 }
|
|
260
|
881
|
|
426
|
882 c->write->handler = ngx_http_upstream_handler;
|
|
|
883 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
884
|
|
|
885 ngx_http_upstream_send_request(r, u);
|
|
|
886
|
|
|
887 return;
|
|
|
888 }
|
|
|
889
|
|
|
890 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
891
|
|
|
892 }
|
|
|
893
|
|
|
894 #endif
|
|
|
895
|
|
|
896
|
|
58
|
897 static ngx_int_t
|
|
36
|
898 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
899 {
|
|
|
900 ngx_chain_t *cl;
|
|
|
901
|
|
58
|
902 if (u->reinit_request(r) != NGX_OK) {
|
|
|
903 return NGX_ERROR;
|
|
|
904 }
|
|
|
905
|
|
356
|
906 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
907
|
|
|
908 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
909 sizeof(ngx_table_elt_t))
|
|
|
910 != NGX_OK)
|
|
58
|
911 {
|
|
|
912 return NGX_ERROR;
|
|
28
|
913 }
|
|
|
914
|
|
|
915 /* reinit the request chain */
|
|
126
|
916
|
|
58
|
917 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
918 cl->buf->pos = cl->buf->start;
|
|
|
919 cl->buf->file_pos = 0;
|
|
|
920 }
|
|
|
921
|
|
58
|
922 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
923
|
|
122
|
924 if (r->request_body && r->request_body->temp_file
|
|
146
|
925 && r != r->main && u->output.buf)
|
|
122
|
926 {
|
|
|
927 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
928 if (u->output.free == NULL) {
|
|
|
929 return NGX_ERROR;
|
|
58
|
930 }
|
|
122
|
931
|
|
|
932 u->output.free->buf = u->output.buf;
|
|
|
933 u->output.free->next = NULL;
|
|
|
934
|
|
|
935 u->output.buf->pos = u->output.buf->start;
|
|
|
936 u->output.buf->last = u->output.buf->start;
|
|
58
|
937 }
|
|
28
|
938
|
|
|
939 u->output.buf = NULL;
|
|
|
940 u->output.in = NULL;
|
|
|
941 u->output.busy = NULL;
|
|
126
|
942
|
|
130
|
943 /* reinit u->buffer */
|
|
126
|
944
|
|
28
|
945 #if 0
|
|
|
946 if (u->cache) {
|
|
130
|
947 u->buffer.pos = u->buffer.start + u->cache->ctx.header_size;
|
|
|
948 u->buffer.last = u->buffer.pos;
|
|
28
|
949
|
|
|
950 } else {
|
|
130
|
951 u->buffer.pos = u->buffer.start;
|
|
|
952 u->buffer.last = u->buffer.start;
|
|
28
|
953 }
|
|
|
954 #else
|
|
58
|
955
|
|
130
|
956 u->buffer.pos = u->buffer.start;
|
|
|
957 u->buffer.last = u->buffer.start;
|
|
58
|
958
|
|
28
|
959 #endif
|
|
|
960
|
|
58
|
961 return NGX_OK;
|
|
28
|
962 }
|
|
|
963
|
|
|
964
|
|
36
|
965 static void
|
|
|
966 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
967 {
|
|
294
|
968 ngx_int_t rc;
|
|
32
|
969 ngx_connection_t *c;
|
|
126
|
970
|
|
28
|
971 c = u->peer.connection;
|
|
|
972
|
|
|
973 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
974 "http upstream send request");
|
|
|
975
|
|
294
|
976 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
977 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
978 return;
|
|
28
|
979 }
|
|
|
980
|
|
32
|
981 c->log->action = "sending request to upstream";
|
|
28
|
982
|
|
58
|
983 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
984
|
|
|
985 u->request_sent = 1;
|
|
|
986
|
|
|
987 if (rc == NGX_ERROR) {
|
|
|
988 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
989 return;
|
|
|
990 }
|
|
|
991
|
|
|
992 if (c->write->timer_set) {
|
|
|
993 ngx_del_timer(c->write);
|
|
|
994 }
|
|
|
995
|
|
|
996 if (rc == NGX_AGAIN) {
|
|
|
997 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
998
|
|
|
999 if (ngx_handle_write_event(c->write, u->conf->send_lowat) == NGX_ERROR)
|
|
|
1000 {
|
|
|
1001 ngx_http_upstream_finalize_request(r, u,
|
|
|
1002 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1003 return;
|
|
|
1004 }
|
|
|
1005
|
|
|
1006 return;
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 /* rc == NGX_OK */
|
|
|
1010
|
|
|
1011 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1012 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1013 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1014 ngx_tcp_push_n " failed");
|
|
|
1015 ngx_http_upstream_finalize_request(r, u,
|
|
|
1016 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1017 return;
|
|
28
|
1018 }
|
|
|
1019
|
|
|
1020 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1021 }
|
|
126
|
1022
|
|
28
|
1023 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1024
|
|
|
1025 #if 1
|
|
|
1026 if (c->read->ready) {
|
|
126
|
1027
|
|
28
|
1028 /* post aio operation */
|
|
|
1029
|
|
|
1030 /*
|
|
|
1031 * TODO comment
|
|
|
1032 * although we can post aio operation just in the end
|
|
|
1033 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1034 * it's better to do here because we postpone header buffer allocation
|
|
|
1035 */
|
|
|
1036
|
|
|
1037 ngx_http_upstream_process_header(c->read);
|
|
|
1038 return;
|
|
|
1039 }
|
|
|
1040 #endif
|
|
|
1041
|
|
426
|
1042 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1043
|
|
58
|
1044 if (ngx_handle_write_event(c->write, 0) == NGX_ERROR) {
|
|
28
|
1045 ngx_http_upstream_finalize_request(r, u,
|
|
|
1046 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1047 return;
|
|
|
1048 }
|
|
|
1049 }
|
|
|
1050
|
|
|
1051
|
|
36
|
1052 static void
|
|
|
1053 ngx_http_upstream_send_request_handler(ngx_event_t *wev)
|
|
28
|
1054 {
|
|
|
1055 ngx_connection_t *c;
|
|
|
1056 ngx_http_request_t *r;
|
|
|
1057 ngx_http_upstream_t *u;
|
|
|
1058
|
|
|
1059 c = wev->data;
|
|
|
1060 r = c->data;
|
|
|
1061 u = r->upstream;
|
|
|
1062
|
|
|
1063 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
1064 "http upstream send request handler");
|
|
|
1065
|
|
|
1066 if (wev->timedout) {
|
|
|
1067 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1068 return;
|
|
|
1069 }
|
|
|
1070
|
|
140
|
1071 #if (NGX_HTTP_SSL)
|
|
|
1072
|
|
348
|
1073 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1074 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1075 return;
|
|
|
1076 }
|
|
|
1077
|
|
|
1078 #endif
|
|
|
1079
|
|
200
|
1080 if (u->header_sent) {
|
|
426
|
1081 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1082
|
|
|
1083 (void) ngx_handle_write_event(wev, 0);
|
|
|
1084
|
|
|
1085 return;
|
|
|
1086 }
|
|
|
1087
|
|
28
|
1088 ngx_http_upstream_send_request(r, u);
|
|
|
1089 }
|
|
|
1090
|
|
|
1091
|
|
36
|
1092 static void
|
|
|
1093 ngx_http_upstream_process_header(ngx_event_t *rev)
|
|
28
|
1094 {
|
|
64
|
1095 ssize_t n;
|
|
|
1096 ngx_int_t rc;
|
|
122
|
1097 ngx_str_t *uri, args;
|
|
198
|
1098 ngx_uint_t i, flags;
|
|
64
|
1099 ngx_list_part_t *part;
|
|
|
1100 ngx_table_elt_t *h;
|
|
|
1101 ngx_connection_t *c;
|
|
|
1102 ngx_http_request_t *r;
|
|
|
1103 ngx_http_upstream_t *u;
|
|
|
1104 ngx_http_upstream_header_t *hh;
|
|
|
1105 ngx_http_upstream_main_conf_t *umcf;
|
|
28
|
1106
|
|
|
1107 c = rev->data;
|
|
|
1108 r = c->data;
|
|
|
1109 u = r->upstream;
|
|
|
1110
|
|
|
1111 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, rev->log, 0,
|
|
32
|
1112 "http upstream process header");
|
|
28
|
1113
|
|
32
|
1114 c->log->action = "reading response header from upstream";
|
|
28
|
1115
|
|
|
1116 if (rev->timedout) {
|
|
|
1117 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1118 return;
|
|
|
1119 }
|
|
126
|
1120
|
|
294
|
1121 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1122 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1123 return;
|
|
|
1124 }
|
|
|
1125
|
|
130
|
1126 if (u->buffer.start == NULL) {
|
|
|
1127 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1128 if (u->buffer.start == NULL) {
|
|
28
|
1129 ngx_http_upstream_finalize_request(r, u,
|
|
|
1130 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1131 return;
|
|
|
1132 }
|
|
|
1133
|
|
130
|
1134 u->buffer.pos = u->buffer.start;
|
|
|
1135 u->buffer.last = u->buffer.start;
|
|
|
1136 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1137 u->buffer.temporary = 1;
|
|
|
1138
|
|
|
1139 u->buffer.tag = u->output.tag;
|
|
28
|
1140
|
|
356
|
1141 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1142 sizeof(ngx_table_elt_t))
|
|
|
1143 != NGX_OK)
|
|
58
|
1144 {
|
|
|
1145 ngx_http_upstream_finalize_request(r, u,
|
|
|
1146 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1147 return;
|
|
|
1148 }
|
|
|
1149
|
|
28
|
1150 #if 0
|
|
|
1151 if (u->cache) {
|
|
130
|
1152 u->buffer.pos += u->cache->ctx.header_size;
|
|
|
1153 u->buffer.last = u->buffer.pos;
|
|
28
|
1154 }
|
|
|
1155 #endif
|
|
|
1156 }
|
|
|
1157
|
|
424
|
1158 for ( ;; ) {
|
|
|
1159
|
|
|
1160 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1161
|
|
|
1162 if (n == NGX_AGAIN) {
|
|
28
|
1163 #if 0
|
|
424
|
1164 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1165 #endif
|
|
|
1166
|
|
424
|
1167 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1168 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1169 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1170 return;
|
|
|
1171 }
|
|
|
1172
|
|
|
1173 return;
|
|
|
1174 }
|
|
|
1175
|
|
|
1176 if (n == 0) {
|
|
|
1177 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1178 "upstream prematurely closed connection");
|
|
|
1179 }
|
|
|
1180
|
|
|
1181 if (n == NGX_ERROR || n == 0) {
|
|
|
1182 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1183 return;
|
|
|
1184 }
|
|
|
1185
|
|
424
|
1186 u->buffer.last += n;
|
|
28
|
1187
|
|
|
1188 #if 0
|
|
424
|
1189 u->valid_header_in = 0;
|
|
|
1190
|
|
|
1191 u->peer.cached = 0;
|
|
28
|
1192 #endif
|
|
|
1193
|
|
424
|
1194 rc = u->process_header(r);
|
|
|
1195
|
|
|
1196 if (rc == NGX_AGAIN) {
|
|
|
1197
|
|
|
1198 if (u->buffer.pos == u->buffer.end) {
|
|
|
1199 ngx_log_error(NGX_LOG_ERR, rev->log, 0,
|
|
|
1200 "upstream sent too big header");
|
|
|
1201
|
|
|
1202 ngx_http_upstream_next(r, u,
|
|
|
1203 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1204 return;
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 continue;
|
|
28
|
1208 }
|
|
|
1209
|
|
424
|
1210 break;
|
|
28
|
1211 }
|
|
|
1212
|
|
|
1213 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1214 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1215 return;
|
|
|
1216 }
|
|
|
1217
|
|
356
|
1218 if (rc == NGX_ERROR) {
|
|
28
|
1219 ngx_http_upstream_finalize_request(r, u,
|
|
|
1220 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1221 return;
|
|
|
1222 }
|
|
|
1223
|
|
|
1224 /* rc == NGX_OK */
|
|
|
1225
|
|
412
|
1226 if (u->headers_in.status_n >= NGX_HTTP_BAD_REQUEST) {
|
|
|
1227
|
|
|
1228 if (r->subrequest_in_memory) {
|
|
|
1229 u->buffer.last = u->buffer.pos;
|
|
58
|
1230 }
|
|
|
1231
|
|
412
|
1232 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1233 return;
|
|
|
1234 }
|
|
|
1235
|
|
412
|
1236 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1237 return;
|
|
|
1238 }
|
|
58
|
1239 }
|
|
|
1240
|
|
230
|
1241 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1242
|
|
356
|
1243 if (u->headers_in.x_accel_redirect) {
|
|
244
|
1244
|
|
64
|
1245 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1246
|
|
356
|
1247 part = &u->headers_in.headers.part;
|
|
64
|
1248 h = part->elts;
|
|
|
1249
|
|
|
1250 for (i = 0; /* void */; i++) {
|
|
|
1251
|
|
|
1252 if (i >= part->nelts) {
|
|
|
1253 if (part->next == NULL) {
|
|
|
1254 break;
|
|
|
1255 }
|
|
126
|
1256
|
|
64
|
1257 part = part->next;
|
|
|
1258 h = part->elts;
|
|
|
1259 i = 0;
|
|
|
1260 }
|
|
|
1261
|
|
198
|
1262 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1263 h[i].lowcase_key, h[i].key.len);
|
|
|
1264
|
|
|
1265 if (hh && hh->redirect) {
|
|
|
1266 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
250
|
1267 ngx_http_finalize_request(r,
|
|
244
|
1268 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
64
|
1269 return;
|
|
|
1270 }
|
|
|
1271 }
|
|
|
1272 }
|
|
|
1273
|
|
356
|
1274 uri = &u->headers_in.x_accel_redirect->value;
|
|
122
|
1275 args.len = 0;
|
|
|
1276 args.data = NULL;
|
|
|
1277 flags = 0;
|
|
|
1278
|
|
|
1279 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
244
|
1280 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
122
|
1281 return;
|
|
|
1282 }
|
|
|
1283
|
|
|
1284 if (flags & NGX_HTTP_ZERO_IN_URI) {
|
|
|
1285 r->zero_in_uri = 1;
|
|
|
1286 }
|
|
|
1287
|
|
202
|
1288 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1289 r->method = NGX_HTTP_GET;
|
|
|
1290 }
|
|
|
1291
|
|
398
|
1292 r->valid_unparsed_uri = 0;
|
|
|
1293
|
|
122
|
1294 ngx_http_internal_redirect(r, uri, &args);
|
|
64
|
1295 return;
|
|
|
1296 }
|
|
|
1297
|
|
356
|
1298 part = &u->headers_in.headers.part;
|
|
58
|
1299 h = part->elts;
|
|
|
1300
|
|
|
1301 for (i = 0; /* void */; i++) {
|
|
28
|
1302
|
|
58
|
1303 if (i >= part->nelts) {
|
|
|
1304 if (part->next == NULL) {
|
|
|
1305 break;
|
|
|
1306 }
|
|
126
|
1307
|
|
58
|
1308 part = part->next;
|
|
|
1309 h = part->elts;
|
|
|
1310 i = 0;
|
|
|
1311 }
|
|
|
1312
|
|
198
|
1313 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1314 h[i].lowcase_key, h[i].key.len))
|
|
58
|
1315 {
|
|
198
|
1316 continue;
|
|
|
1317 }
|
|
|
1318
|
|
|
1319 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1320 h[i].lowcase_key, h[i].key.len);
|
|
|
1321
|
|
|
1322 if (hh) {
|
|
|
1323 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
58
|
1324 ngx_http_upstream_finalize_request(r, u,
|
|
|
1325 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1326 return;
|
|
|
1327 }
|
|
|
1328
|
|
|
1329 continue;
|
|
|
1330 }
|
|
|
1331
|
|
|
1332 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1333 ngx_http_upstream_finalize_request(r, u,
|
|
|
1334 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1335 return;
|
|
|
1336 }
|
|
|
1337 }
|
|
|
1338
|
|
198
|
1339 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1340 r->headers_out.server->hash = 0;
|
|
|
1341 }
|
|
|
1342
|
|
|
1343 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1344 r->headers_out.date->hash = 0;
|
|
|
1345 }
|
|
|
1346
|
|
78
|
1347 r->headers_out.status = u->headers_in.status_n;
|
|
|
1348 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1349
|
|
364
|
1350 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1351
|
|
130
|
1352 if (r->headers_out.content_length_n != -1) {
|
|
|
1353 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1354
|
|
|
1355 } else {
|
|
|
1356 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1357 }
|
|
|
1358
|
|
248
|
1359 if (!r->subrequest_in_memory) {
|
|
|
1360 ngx_http_upstream_send_response(r, u);
|
|
|
1361 return;
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 /* subrequest content in memory */
|
|
|
1365
|
|
|
1366 if (u->input_filter == NULL) {
|
|
|
1367 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1368 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1369 u->input_filter_ctx = r;
|
|
|
1370 }
|
|
|
1371
|
|
|
1372 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1373 ngx_http_upstream_finalize_request(r, u,
|
|
|
1374 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1375 return;
|
|
|
1376 }
|
|
|
1377
|
|
420
|
1378 n = u->buffer.last - u->buffer.pos;
|
|
|
1379
|
|
|
1380 if (n) {
|
|
|
1381 u->buffer.last -= n;
|
|
|
1382
|
|
|
1383 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1384 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1385 return;
|
|
|
1386 }
|
|
|
1387
|
|
420
|
1388 if (u->length == 0) {
|
|
|
1389 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1390 return;
|
|
|
1391 }
|
|
248
|
1392 }
|
|
|
1393
|
|
426
|
1394 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1395
|
|
|
1396 ngx_http_upstream_process_body_in_memory(rev);
|
|
|
1397 }
|
|
|
1398
|
|
|
1399
|
|
294
|
1400 static ngx_int_t
|
|
412
|
1401 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1402 {
|
|
|
1403 ngx_uint_t status;
|
|
|
1404 ngx_http_upstream_next_t *un;
|
|
|
1405
|
|
|
1406 if (!(u->conf->next_upstream & NGX_HTTP_UPSTREAM_FT_STATUS)) {
|
|
|
1407 return NGX_DECLINED;
|
|
|
1408 }
|
|
|
1409
|
|
|
1410 status = u->headers_in.status_n;
|
|
|
1411
|
|
|
1412 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1413
|
|
|
1414 if (status != un->status) {
|
|
|
1415 continue;
|
|
|
1416 }
|
|
|
1417
|
|
|
1418 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1419 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1420 return NGX_OK;
|
|
|
1421 }
|
|
|
1422
|
|
|
1423 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1424 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1425 return NGX_OK;
|
|
|
1426 }
|
|
|
1427
|
|
|
1428 #if (NGX_HTTP_CACHE)
|
|
|
1429
|
|
|
1430 if (u->peer.tries == 0 && u->stale && (u->conf->use_stale & un->mask)) {
|
|
|
1431 ngx_http_upstream_finalize_request(r, u,
|
|
|
1432 ngx_http_send_cached_response(r));
|
|
|
1433 return NGX_OK;
|
|
|
1434 }
|
|
|
1435
|
|
|
1436 #endif
|
|
|
1437 }
|
|
|
1438
|
|
|
1439 return NGX_DECLINED;
|
|
|
1440 }
|
|
|
1441
|
|
|
1442
|
|
|
1443 static ngx_int_t
|
|
|
1444 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1445 ngx_http_upstream_t *u)
|
|
|
1446 {
|
|
|
1447 ngx_int_t status;
|
|
|
1448 ngx_uint_t i;
|
|
|
1449 ngx_table_elt_t *h;
|
|
|
1450 ngx_http_err_page_t *err_page;
|
|
|
1451 ngx_http_core_loc_conf_t *clcf;
|
|
|
1452
|
|
|
1453 if (!u->conf->intercept_errors) {
|
|
|
1454 return NGX_DECLINED;
|
|
|
1455 }
|
|
|
1456
|
|
|
1457 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1458
|
|
|
1459 if (clcf->error_pages == NULL) {
|
|
|
1460 return NGX_DECLINED;
|
|
|
1461 }
|
|
|
1462
|
|
|
1463 status = u->headers_in.status_n;
|
|
|
1464
|
|
|
1465 err_page = clcf->error_pages->elts;
|
|
|
1466 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1467
|
|
|
1468 if (err_page[i].status == status) {
|
|
|
1469
|
|
|
1470 if (status == NGX_HTTP_UNAUTHORIZED) {
|
|
|
1471
|
|
|
1472 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1473
|
|
|
1474 if (h == NULL) {
|
|
|
1475 ngx_http_upstream_finalize_request(r, u,
|
|
|
1476 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1477 return NGX_OK;
|
|
|
1478 }
|
|
|
1479
|
|
|
1480 *h = *u->headers_in.www_authenticate;
|
|
|
1481
|
|
|
1482 r->headers_out.www_authenticate = h;
|
|
|
1483 }
|
|
|
1484
|
|
|
1485 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1486
|
|
|
1487 return NGX_OK;
|
|
|
1488 }
|
|
|
1489 }
|
|
|
1490
|
|
|
1491 return NGX_DECLINED;
|
|
|
1492 }
|
|
|
1493
|
|
|
1494
|
|
|
1495 static ngx_int_t
|
|
294
|
1496 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1497 {
|
|
|
1498 int err;
|
|
|
1499 socklen_t len;
|
|
|
1500
|
|
|
1501 #if (NGX_HAVE_KQUEUE)
|
|
|
1502
|
|
|
1503 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1504 if (c->write->pending_eof) {
|
|
336
|
1505 c->log->action = "connecting to upstream";
|
|
296
|
1506 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1507 "kevent() reported that connect() failed");
|
|
|
1508 return NGX_ERROR;
|
|
|
1509 }
|
|
294
|
1510
|
|
|
1511 } else
|
|
|
1512 #endif
|
|
|
1513 {
|
|
296
|
1514 err = 0;
|
|
|
1515 len = sizeof(int);
|
|
|
1516
|
|
|
1517 /*
|
|
|
1518 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1519 * Solaris returns -1 and sets errno
|
|
|
1520 */
|
|
|
1521
|
|
|
1522 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1523 == -1)
|
|
|
1524 {
|
|
|
1525 err = ngx_errno;
|
|
|
1526 }
|
|
|
1527
|
|
|
1528 if (err) {
|
|
336
|
1529 c->log->action = "connecting to upstream";
|
|
296
|
1530 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1531 return NGX_ERROR;
|
|
|
1532 }
|
|
294
|
1533 }
|
|
|
1534
|
|
|
1535 return NGX_OK;
|
|
|
1536 }
|
|
|
1537
|
|
|
1538
|
|
248
|
1539 static void
|
|
|
1540 ngx_http_upstream_process_body_in_memory(ngx_event_t *rev)
|
|
|
1541 {
|
|
|
1542 size_t size;
|
|
|
1543 ssize_t n;
|
|
|
1544 ngx_buf_t *b;
|
|
|
1545 ngx_connection_t *c;
|
|
|
1546 ngx_http_request_t *r;
|
|
|
1547 ngx_http_upstream_t *u;
|
|
|
1548
|
|
|
1549 c = rev->data;
|
|
|
1550 r = c->data;
|
|
|
1551 u = r->upstream;
|
|
|
1552
|
|
|
1553 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1554 "http upstream process body on memory");
|
|
|
1555
|
|
|
1556 if (rev->timedout) {
|
|
|
1557 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1558 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1559 return;
|
|
|
1560 }
|
|
|
1561
|
|
|
1562 b = &u->buffer;
|
|
|
1563
|
|
|
1564 for ( ;; ) {
|
|
|
1565
|
|
|
1566 size = b->end - b->last;
|
|
|
1567
|
|
|
1568 if (size == 0) {
|
|
|
1569 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1570 "upstream buffer is too small to read repsonse");
|
|
|
1571 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1572 return;
|
|
|
1573 }
|
|
|
1574
|
|
|
1575 n = c->recv(c, b->last, size);
|
|
|
1576
|
|
|
1577 if (n == NGX_AGAIN) {
|
|
|
1578 break;
|
|
|
1579 }
|
|
|
1580
|
|
|
1581 if (n == 0 || n == NGX_ERROR) {
|
|
|
1582 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1583 return;
|
|
|
1584 }
|
|
|
1585
|
|
|
1586 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1587 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1588 return;
|
|
|
1589 }
|
|
|
1590
|
|
|
1591 if (!rev->ready) {
|
|
|
1592 break;
|
|
|
1593 }
|
|
|
1594 }
|
|
|
1595
|
|
|
1596 if (ngx_handle_read_event(rev, 0) == NGX_ERROR) {
|
|
|
1597 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1598 return;
|
|
|
1599 }
|
|
|
1600
|
|
|
1601 if (rev->active) {
|
|
|
1602 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1603
|
|
|
1604 } else if (rev->timer_set) {
|
|
|
1605 ngx_del_timer(rev);
|
|
|
1606 }
|
|
230
|
1607 }
|
|
|
1608
|
|
|
1609
|
|
|
1610 static void
|
|
|
1611 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1612 {
|
|
|
1613 int tcp_nodelay;
|
|
|
1614 ssize_t size;
|
|
|
1615 ngx_int_t rc;
|
|
|
1616 ngx_event_pipe_t *p;
|
|
|
1617 ngx_connection_t *c;
|
|
|
1618 ngx_pool_cleanup_t *cl;
|
|
|
1619 ngx_pool_cleanup_file_t *clf;
|
|
|
1620 ngx_http_core_loc_conf_t *clcf;
|
|
|
1621
|
|
58
|
1622 rc = ngx_http_send_header(r);
|
|
28
|
1623
|
|
274
|
1624 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action || r->header_only) {
|
|
34
|
1625 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1626 return;
|
|
|
1627 }
|
|
|
1628
|
|
|
1629 u->header_sent = 1;
|
|
|
1630
|
|
122
|
1631 if (r->request_body && r->request_body->temp_file) {
|
|
112
|
1632 for (cl = r->pool->cleanup; cl; cl = cl->next) {
|
|
|
1633 if (cl->handler == ngx_pool_cleanup_file) {
|
|
|
1634 clf = cl->data;
|
|
|
1635
|
|
|
1636 if (clf->fd == r->request_body->temp_file->file.fd) {
|
|
|
1637 cl->handler(clf);
|
|
|
1638 cl->handler = NULL;
|
|
208
|
1639 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
1640 break;
|
|
|
1641 }
|
|
|
1642 }
|
|
|
1643 }
|
|
|
1644 }
|
|
|
1645
|
|
132
|
1646 c = r->connection;
|
|
|
1647
|
|
130
|
1648 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1649
|
|
198
|
1650 if (!u->buffering) {
|
|
130
|
1651
|
|
|
1652 if (u->input_filter == NULL) {
|
|
|
1653 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1654 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1655 u->input_filter_ctx = r;
|
|
|
1656 }
|
|
|
1657
|
|
428
|
1658 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
1659 r->write_event_handler =
|
|
|
1660 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
1661
|
|
|
1662 r->limit_rate = 0;
|
|
|
1663
|
|
|
1664 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1665 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1666 return;
|
|
|
1667 }
|
|
|
1668
|
|
132
|
1669 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
1670 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
1671
|
|
|
1672 tcp_nodelay = 1;
|
|
|
1673
|
|
|
1674 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
1675 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
1676 {
|
|
|
1677 ngx_connection_error(c, ngx_socket_errno,
|
|
|
1678 "setsockopt(TCP_NODELAY) failed");
|
|
|
1679 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1680 return;
|
|
|
1681 }
|
|
|
1682
|
|
|
1683 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
1684 }
|
|
|
1685
|
|
130
|
1686 size = u->buffer.last - u->buffer.pos;
|
|
|
1687
|
|
|
1688 if (size) {
|
|
|
1689 u->buffer.last = u->buffer.pos;
|
|
|
1690
|
|
|
1691 if (u->input_filter(u->input_filter_ctx, size) == NGX_ERROR) {
|
|
|
1692 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1693 return;
|
|
|
1694 }
|
|
|
1695
|
|
428
|
1696 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
1697
|
|
|
1698 } else {
|
|
|
1699 u->buffer.pos = u->buffer.start;
|
|
|
1700 u->buffer.last = u->buffer.start;
|
|
|
1701
|
|
|
1702 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
1703 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1704 return;
|
|
|
1705 }
|
|
336
|
1706
|
|
|
1707 if (u->peer.connection->read->ready) {
|
|
428
|
1708 ngx_http_upstream_process_non_buffered_upstream(
|
|
336
|
1709 u->peer.connection->read);
|
|
|
1710 }
|
|
130
|
1711 }
|
|
|
1712
|
|
|
1713 return;
|
|
|
1714 }
|
|
|
1715
|
|
28
|
1716 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
1717
|
|
|
1718 #if 0
|
|
|
1719
|
|
|
1720 if (u->cache && u->cache->ctx.file.fd != NGX_INVALID_FILE) {
|
|
|
1721 if (ngx_close_file(u->cache->ctx.file.fd) == NGX_FILE_ERROR) {
|
|
132
|
1722 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
28
|
1723 ngx_close_file_n " \"%s\" failed",
|
|
|
1724 u->cache->ctx.file.name.data);
|
|
|
1725 }
|
|
|
1726 }
|
|
|
1727
|
|
340
|
1728 if (u->cacheable) {
|
|
130
|
1729 header = (ngx_http_cache_header_t *) u->buffer->start;
|
|
28
|
1730
|
|
|
1731 header->expires = u->cache->ctx.expires;
|
|
|
1732 header->last_modified = u->cache->ctx.last_modified;
|
|
|
1733 header->date = u->cache->ctx.date;
|
|
|
1734 header->length = r->headers_out.content_length_n;
|
|
|
1735 u->cache->ctx.length = r->headers_out.content_length_n;
|
|
|
1736
|
|
|
1737 header->key_len = u->cache->ctx.key0.len;
|
|
|
1738 ngx_memcpy(&header->key, u->cache->ctx.key0.data, header->key_len);
|
|
|
1739 header->key[header->key_len] = LF;
|
|
|
1740 }
|
|
|
1741
|
|
|
1742 #endif
|
|
|
1743
|
|
130
|
1744 p = u->pipe;
|
|
28
|
1745
|
|
|
1746 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
1747 p->output_ctx = r;
|
|
|
1748 p->tag = u->output.tag;
|
|
126
|
1749 p->bufs = u->conf->bufs;
|
|
28
|
1750 p->busy_size = u->conf->busy_buffers_size;
|
|
|
1751 p->upstream = u->peer.connection;
|
|
132
|
1752 p->downstream = c;
|
|
28
|
1753 p->pool = r->pool;
|
|
132
|
1754 p->log = c->log;
|
|
126
|
1755
|
|
340
|
1756 p->cacheable = u->cacheable || u->store;
|
|
28
|
1757
|
|
50
|
1758 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
1759 if (p->temp_file == NULL) {
|
|
28
|
1760 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1761 return;
|
|
|
1762 }
|
|
|
1763
|
|
|
1764 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
1765 p->temp_file->file.log = c->log;
|
|
28
|
1766 p->temp_file->path = u->conf->temp_path;
|
|
|
1767 p->temp_file->pool = r->pool;
|
|
126
|
1768
|
|
340
|
1769 if (u->cacheable || u->store) {
|
|
28
|
1770 p->temp_file->persistent = 1;
|
|
318
|
1771
|
|
28
|
1772 } else {
|
|
216
|
1773 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
1774 p->temp_file->warn = "an upstream response is buffered "
|
|
|
1775 "to a temporary file";
|
|
|
1776 }
|
|
|
1777
|
|
|
1778 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
1779 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
1780
|
|
50
|
1781 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
1782 if (p->preread_bufs == NULL) {
|
|
28
|
1783 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1784 return;
|
|
|
1785 }
|
|
318
|
1786
|
|
130
|
1787 p->preread_bufs->buf = &u->buffer;
|
|
28
|
1788 p->preread_bufs->next = NULL;
|
|
130
|
1789 u->buffer.recycled = 1;
|
|
|
1790
|
|
|
1791 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
1792
|
|
340
|
1793 if (u->cacheable) {
|
|
318
|
1794
|
|
28
|
1795 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
1796 if (p->buf_to_file == NULL) {
|
|
|
1797 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1798 return;
|
|
|
1799 }
|
|
318
|
1800
|
|
130
|
1801 p->buf_to_file->pos = u->buffer.start;
|
|
|
1802 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
1803 p->buf_to_file->temporary = 1;
|
|
|
1804 }
|
|
|
1805
|
|
|
1806 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
1807 /* the posted aio operation may currupt a shadow buffer */
|
|
|
1808 p->single_buf = 1;
|
|
|
1809 }
|
|
|
1810
|
|
|
1811 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
1812 p->free_bufs = 1;
|
|
|
1813
|
|
|
1814 /*
|
|
130
|
1815 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
1816 * as though these bytes were read
|
|
|
1817 */
|
|
130
|
1818 u->buffer.last = u->buffer.pos;
|
|
28
|
1819
|
|
|
1820 if (u->conf->cyclic_temp_file) {
|
|
|
1821
|
|
|
1822 /*
|
|
|
1823 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
1824 * because the writing a new data may interfere with sendfile()
|
|
|
1825 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
1826 */
|
|
|
1827
|
|
|
1828 p->cyclic_temp_file = 1;
|
|
132
|
1829 c->sendfile = 0;
|
|
28
|
1830
|
|
|
1831 } else {
|
|
|
1832 p->cyclic_temp_file = 0;
|
|
|
1833 }
|
|
|
1834
|
|
|
1835 p->read_timeout = u->conf->read_timeout;
|
|
|
1836 p->send_timeout = clcf->send_timeout;
|
|
|
1837 p->send_lowat = clcf->send_lowat;
|
|
|
1838
|
|
428
|
1839 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
1840 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
1841
|
|
428
|
1842 ngx_http_upstream_process_upstream(u->peer.connection->read);
|
|
28
|
1843 }
|
|
|
1844
|
|
|
1845
|
|
36
|
1846 static void
|
|
130
|
1847 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
1848 {
|
|
428
|
1849 ngx_event_t *wev;
|
|
|
1850 ngx_connection_t *c;
|
|
|
1851 ngx_http_upstream_t *u;
|
|
|
1852
|
|
|
1853 c = r->connection;
|
|
|
1854 u = r->upstream;
|
|
|
1855 wev = c->write;
|
|
|
1856
|
|
|
1857 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1858 "http upstream process non buffered downstream");
|
|
|
1859
|
|
|
1860 c->log->action = "sending to client";
|
|
|
1861
|
|
|
1862 if (wev->timedout) {
|
|
|
1863 c->timedout = 1;
|
|
|
1864 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
1865 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1866 return;
|
|
|
1867 }
|
|
|
1868
|
|
|
1869 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
1870 }
|
|
|
1871
|
|
|
1872
|
|
|
1873 static void
|
|
428
|
1874 ngx_http_upstream_process_non_buffered_upstream(ngx_event_t *rev)
|
|
|
1875 {
|
|
|
1876 ngx_connection_t *c;
|
|
|
1877 ngx_http_request_t *r;
|
|
|
1878 ngx_http_upstream_t *u;
|
|
|
1879
|
|
|
1880 c = rev->data;
|
|
|
1881 r = c->data;
|
|
|
1882 u = r->upstream;
|
|
|
1883
|
|
|
1884 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1885 "http upstream process non buffered upstream");
|
|
|
1886
|
|
|
1887 c->log->action = "reading upstream";
|
|
|
1888
|
|
|
1889 if (rev->timedout) {
|
|
|
1890 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1891 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1892 return;
|
|
|
1893 }
|
|
|
1894
|
|
|
1895 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
1896 }
|
|
|
1897
|
|
|
1898
|
|
|
1899 static void
|
|
|
1900 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
1901 ngx_uint_t do_write)
|
|
130
|
1902 {
|
|
|
1903 size_t size;
|
|
|
1904 ssize_t n;
|
|
|
1905 ngx_buf_t *b;
|
|
132
|
1906 ngx_int_t rc;
|
|
428
|
1907 ngx_connection_t *downstream, *upstream;
|
|
130
|
1908 ngx_http_upstream_t *u;
|
|
|
1909 ngx_http_core_loc_conf_t *clcf;
|
|
|
1910
|
|
244
|
1911 u = r->upstream;
|
|
260
|
1912 downstream = r->connection;
|
|
|
1913 upstream = u->peer.connection;
|
|
130
|
1914
|
|
|
1915 b = &u->buffer;
|
|
|
1916
|
|
428
|
1917 do_write = do_write || u->length == 0;
|
|
130
|
1918
|
|
|
1919 for ( ;; ) {
|
|
|
1920
|
|
|
1921 if (do_write) {
|
|
|
1922
|
|
|
1923 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
1924 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
1925
|
|
260
|
1926 if (downstream->destroyed) {
|
|
132
|
1927 return;
|
|
|
1928 }
|
|
|
1929
|
|
|
1930 if (rc == NGX_ERROR) {
|
|
130
|
1931 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1932 return;
|
|
|
1933 }
|
|
|
1934
|
|
|
1935 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
1936 &u->out_bufs, u->output.tag);
|
|
|
1937 }
|
|
|
1938
|
|
|
1939 if (u->busy_bufs == NULL) {
|
|
|
1940
|
|
|
1941 if (u->length == 0
|
|
260
|
1942 || upstream->read->eof
|
|
|
1943 || upstream->read->error)
|
|
130
|
1944 {
|
|
|
1945 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1946 return;
|
|
|
1947 }
|
|
|
1948
|
|
|
1949 b->pos = b->start;
|
|
|
1950 b->last = b->start;
|
|
|
1951 }
|
|
|
1952 }
|
|
|
1953
|
|
|
1954 size = b->end - b->last;
|
|
|
1955
|
|
|
1956 if (size > u->length) {
|
|
|
1957 size = u->length;
|
|
|
1958 }
|
|
|
1959
|
|
260
|
1960 if (size && upstream->read->ready) {
|
|
|
1961
|
|
|
1962 n = upstream->recv(upstream, b->last, size);
|
|
130
|
1963
|
|
|
1964 if (n == NGX_AGAIN) {
|
|
|
1965 break;
|
|
|
1966 }
|
|
|
1967
|
|
|
1968 if (n > 0) {
|
|
|
1969 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1970 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1971 return;
|
|
|
1972 }
|
|
|
1973 }
|
|
|
1974
|
|
|
1975 do_write = 1;
|
|
|
1976
|
|
|
1977 continue;
|
|
|
1978 }
|
|
|
1979
|
|
|
1980 break;
|
|
|
1981 }
|
|
|
1982
|
|
428
|
1983 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1984
|
|
260
|
1985 if (downstream->data == r) {
|
|
|
1986 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
1987 != NGX_OK)
|
|
132
|
1988 {
|
|
|
1989 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1990 return;
|
|
|
1991 }
|
|
130
|
1992 }
|
|
|
1993
|
|
276
|
1994 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
1995 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
1996
|
|
|
1997 } else if (downstream->write->timer_set) {
|
|
|
1998 ngx_del_timer(downstream->write);
|
|
130
|
1999 }
|
|
|
2000
|
|
426
|
2001 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2002 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2003 return;
|
|
|
2004 }
|
|
|
2005
|
|
276
|
2006 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2007 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2008
|
|
|
2009 } else if (upstream->read->timer_set) {
|
|
|
2010 ngx_del_timer(upstream->read);
|
|
130
|
2011 }
|
|
|
2012 }
|
|
|
2013
|
|
|
2014
|
|
|
2015 static ngx_int_t
|
|
|
2016 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2017 {
|
|
|
2018 return NGX_OK;
|
|
|
2019 }
|
|
|
2020
|
|
|
2021
|
|
|
2022 static ngx_int_t
|
|
|
2023 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2024 {
|
|
|
2025 ngx_http_request_t *r = data;
|
|
|
2026
|
|
|
2027 ngx_buf_t *b;
|
|
|
2028 ngx_chain_t *cl, **ll;
|
|
|
2029 ngx_http_upstream_t *u;
|
|
|
2030
|
|
|
2031 u = r->upstream;
|
|
|
2032
|
|
|
2033 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2034 ll = &cl->next;
|
|
|
2035 }
|
|
|
2036
|
|
|
2037 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2038 if (cl == NULL) {
|
|
|
2039 return NGX_ERROR;
|
|
|
2040 }
|
|
|
2041
|
|
|
2042 *ll = cl;
|
|
|
2043
|
|
|
2044 cl->buf->flush = 1;
|
|
|
2045 cl->buf->memory = 1;
|
|
|
2046
|
|
|
2047 b = &u->buffer;
|
|
|
2048
|
|
|
2049 cl->buf->pos = b->last;
|
|
|
2050 b->last += bytes;
|
|
|
2051 cl->buf->last = b->last;
|
|
366
|
2052 cl->buf->tag = u->output.tag;
|
|
130
|
2053
|
|
|
2054 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2055 return NGX_OK;
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 u->length -= bytes;
|
|
|
2059
|
|
|
2060 return NGX_OK;
|
|
|
2061 }
|
|
|
2062
|
|
|
2063
|
|
|
2064 static void
|
|
58
|
2065 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2066 {
|
|
428
|
2067 ngx_event_t *wev;
|
|
|
2068 ngx_connection_t *c;
|
|
58
|
2069 ngx_event_pipe_t *p;
|
|
28
|
2070 ngx_http_upstream_t *u;
|
|
|
2071
|
|
428
|
2072 c = r->connection;
|
|
28
|
2073 u = r->upstream;
|
|
130
|
2074 p = u->pipe;
|
|
428
|
2075 wev = c->write;
|
|
|
2076
|
|
|
2077 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2078 "http upstream process downstream");
|
|
|
2079
|
|
|
2080 c->log->action = "sending to client";
|
|
|
2081
|
|
|
2082 if (wev->timedout) {
|
|
|
2083
|
|
|
2084 if (wev->delayed) {
|
|
|
2085
|
|
|
2086 wev->timedout = 0;
|
|
|
2087 wev->delayed = 0;
|
|
|
2088
|
|
|
2089 if (!wev->ready) {
|
|
|
2090 ngx_add_timer(wev, p->send_timeout);
|
|
|
2091
|
|
|
2092 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2093 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2094 }
|
|
|
2095
|
|
|
2096 return;
|
|
|
2097 }
|
|
|
2098
|
|
|
2099 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2100
|
|
|
2101 if (c->destroyed) {
|
|
76
|
2102 return;
|
|
|
2103 }
|
|
|
2104
|
|
428
|
2105 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2106 return;
|
|
76
|
2107 }
|
|
28
|
2108
|
|
|
2109 } else {
|
|
428
|
2110 p->downstream_error = 1;
|
|
|
2111 c->timedout = 1;
|
|
|
2112 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2113 }
|
|
|
2114
|
|
|
2115 } else {
|
|
428
|
2116
|
|
|
2117 if (wev->delayed) {
|
|
|
2118
|
|
76
|
2119 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2120 "http downstream delayed");
|
|
|
2121
|
|
428
|
2122 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2123 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2124 }
|
|
|
2125
|
|
|
2126 return;
|
|
|
2127 }
|
|
|
2128
|
|
428
|
2129 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
|
2130
|
|
|
2131 if (c->destroyed) {
|
|
132
|
2132 return;
|
|
|
2133 }
|
|
|
2134
|
|
28
|
2135 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2136 return;
|
|
|
2137 }
|
|
|
2138 }
|
|
126
|
2139
|
|
428
|
2140 ngx_http_upstream_process_request(r);
|
|
|
2141 }
|
|
|
2142
|
|
|
2143
|
|
|
2144 static void
|
|
|
2145 ngx_http_upstream_process_upstream(ngx_event_t *rev)
|
|
|
2146 {
|
|
|
2147 ngx_connection_t *c;
|
|
|
2148 ngx_event_pipe_t *p;
|
|
|
2149 ngx_http_request_t *r;
|
|
|
2150 ngx_http_upstream_t *u;
|
|
|
2151
|
|
|
2152 c = rev->data;
|
|
|
2153 r = c->data;
|
|
|
2154 u = r->upstream;
|
|
|
2155 p = u->pipe;
|
|
|
2156
|
|
|
2157 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2158 "http upstream process upstream");
|
|
|
2159
|
|
|
2160 c->log->action = "reading upstream";
|
|
|
2161
|
|
|
2162 if (rev->timedout) {
|
|
|
2163 p->upstream_error = 1;
|
|
|
2164 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2165
|
|
|
2166 } else {
|
|
|
2167 c = r->connection;
|
|
|
2168
|
|
|
2169 if (ngx_event_pipe(p, 0) == NGX_ABORT) {
|
|
|
2170
|
|
|
2171 if (c->destroyed) {
|
|
|
2172 return;
|
|
|
2173 }
|
|
|
2174
|
|
|
2175 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2176 return;
|
|
|
2177 }
|
|
|
2178 }
|
|
|
2179
|
|
|
2180 ngx_http_upstream_process_request(r);
|
|
|
2181 }
|
|
|
2182
|
|
|
2183
|
|
|
2184 static void
|
|
|
2185 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2186 {
|
|
|
2187 ngx_temp_file_t *tf;
|
|
|
2188 ngx_event_pipe_t *p;
|
|
|
2189 ngx_http_upstream_t *u;
|
|
|
2190
|
|
|
2191 u = r->upstream;
|
|
|
2192 p = u->pipe;
|
|
|
2193
|
|
28
|
2194 if (u->peer.connection) {
|
|
|
2195
|
|
318
|
2196 if (u->store) {
|
|
|
2197
|
|
364
|
2198 tf = u->pipe->temp_file;
|
|
|
2199
|
|
|
2200 if (p->upstream_eof
|
|
|
2201 && u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2202 && (u->headers_in.content_length_n == -1
|
|
|
2203 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2204 {
|
|
318
|
2205 ngx_http_upstream_store(r, u);
|
|
|
2206
|
|
|
2207 } else if ((p->upstream_error
|
|
|
2208 || (p->upstream_eof
|
|
|
2209 && u->headers_in.status_n != NGX_HTTP_OK))
|
|
364
|
2210 && tf->file.fd != NGX_INVALID_FILE)
|
|
318
|
2211 {
|
|
364
|
2212 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2213
|
|
318
|
2214 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2215 ngx_delete_file_n " \"%s\" failed",
|
|
|
2216 u->pipe->temp_file->file.name.data);
|
|
|
2217 }
|
|
|
2218 }
|
|
|
2219 }
|
|
|
2220
|
|
28
|
2221 #if (NGX_HTTP_FILE_CACHE)
|
|
|
2222
|
|
340
|
2223 if (p->upstream_done && u->cacheable) {
|
|
28
|
2224 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2225 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2226 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2227 return;
|
|
|
2228 }
|
|
|
2229
|
|
340
|
2230 } else if (p->upstream_eof && u->cacheable) {
|
|
28
|
2231
|
|
|
2232 /* TODO: check length & update cache */
|
|
|
2233
|
|
|
2234 if (ngx_http_cache_update(r) == NGX_ERROR) {
|
|
|
2235 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2236 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2237 return;
|
|
|
2238 }
|
|
|
2239 }
|
|
|
2240
|
|
|
2241 #endif
|
|
|
2242
|
|
|
2243 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2244 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2245 "http upstream exit: %p", p->out);
|
|
28
|
2246 #if 0
|
|
|
2247 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2248 #endif
|
|
|
2249 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2250 return;
|
|
|
2251 }
|
|
|
2252 }
|
|
|
2253
|
|
|
2254 if (p->downstream_error) {
|
|
428
|
2255 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2256 "http upstream downstream error");
|
|
28
|
2257
|
|
340
|
2258 if (!u->cacheable && u->peer.connection) {
|
|
28
|
2259 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2260 }
|
|
|
2261 }
|
|
|
2262 }
|
|
|
2263
|
|
|
2264
|
|
36
|
2265 static void
|
|
318
|
2266 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2267 {
|
|
370
|
2268 size_t root;
|
|
|
2269 time_t lm;
|
|
|
2270 ngx_str_t path;
|
|
|
2271 ngx_temp_file_t *tf;
|
|
|
2272 ngx_ext_rename_file_t ext;
|
|
318
|
2273
|
|
358
|
2274 tf = u->pipe->temp_file;
|
|
|
2275
|
|
|
2276 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2277
|
|
|
2278 /* create file for empty 200 response */
|
|
|
2279
|
|
|
2280 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2281 if (tf == NULL) {
|
|
|
2282 return;
|
|
|
2283 }
|
|
|
2284
|
|
|
2285 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2286 tf->file.log = r->connection->log;
|
|
|
2287 tf->path = u->conf->temp_path;
|
|
|
2288 tf->pool = r->pool;
|
|
|
2289 tf->persistent = 1;
|
|
|
2290
|
|
|
2291 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2292 tf->persistent, tf->clean, tf->access)
|
|
|
2293 != NGX_OK)
|
|
|
2294 {
|
|
|
2295 return;
|
|
|
2296 }
|
|
|
2297
|
|
|
2298 u->pipe->temp_file = tf;
|
|
|
2299 }
|
|
|
2300
|
|
370
|
2301 ext.access = u->conf->store_access;
|
|
|
2302 ext.time = -1;
|
|
|
2303 ext.create_path = 1;
|
|
|
2304 ext.delete_file = 1;
|
|
|
2305 ext.log = r->connection->log;
|
|
318
|
2306
|
|
356
|
2307 if (u->headers_in.last_modified) {
|
|
|
2308
|
|
370
|
2309 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2310 u->headers_in.last_modified->value.len);
|
|
318
|
2311
|
|
|
2312 if (lm != NGX_ERROR) {
|
|
370
|
2313 ext.time = lm;
|
|
|
2314 ext.fd = tf->file.fd;
|
|
318
|
2315 }
|
|
|
2316 }
|
|
|
2317
|
|
320
|
2318 if (u->conf->store_lengths == NULL) {
|
|
|
2319
|
|
|
2320 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2321
|
|
|
2322 } else {
|
|
|
2323 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2324 u->conf->store_values->elts)
|
|
|
2325 == NULL)
|
|
|
2326 {
|
|
|
2327 return;
|
|
|
2328 }
|
|
|
2329 }
|
|
318
|
2330
|
|
|
2331 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2332 "upstream stores \"%s\" to \"%s\"",
|
|
|
2333 tf->file.name.data, path.data);
|
|
|
2334
|
|
|
2335 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2336 }
|
|
|
2337
|
|
|
2338
|
|
|
2339 static void
|
|
36
|
2340 ngx_http_upstream_dummy_handler(ngx_event_t *wev)
|
|
28
|
2341 {
|
|
|
2342 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, wev->log, 0,
|
|
|
2343 "http upstream dummy handler");
|
|
|
2344 }
|
|
|
2345
|
|
|
2346
|
|
36
|
2347 static void
|
|
|
2348 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2349 ngx_uint_t ft_type)
|
|
28
|
2350 {
|
|
260
|
2351 ngx_uint_t status, state;
|
|
28
|
2352
|
|
|
2353 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2354 "http next upstream, %xi", ft_type);
|
|
28
|
2355
|
|
|
2356 #if 0
|
|
|
2357 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2358 #endif
|
|
|
2359
|
|
74
|
2360 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2361 state = NGX_PEER_NEXT;
|
|
74
|
2362 } else {
|
|
260
|
2363 state = NGX_PEER_FAILED;
|
|
28
|
2364 }
|
|
74
|
2365
|
|
326
|
2366 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2367 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2368 }
|
|
74
|
2369
|
|
28
|
2370 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2371 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2372 "upstream timed out");
|
|
|
2373 }
|
|
126
|
2374
|
|
28
|
2375 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2376 status = 0;
|
|
|
2377
|
|
|
2378 } else {
|
|
|
2379 switch(ft_type) {
|
|
|
2380
|
|
|
2381 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2382 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2383 break;
|
|
|
2384
|
|
|
2385 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2386 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2387 break;
|
|
|
2388
|
|
|
2389 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2390 status = NGX_HTTP_NOT_FOUND;
|
|
|
2391 break;
|
|
|
2392
|
|
|
2393 /*
|
|
|
2394 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2395 * never reach here
|
|
|
2396 */
|
|
|
2397
|
|
|
2398 default:
|
|
|
2399 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2400 }
|
|
|
2401 }
|
|
|
2402
|
|
132
|
2403 if (r->connection->error) {
|
|
28
|
2404 ngx_http_upstream_finalize_request(r, u,
|
|
|
2405 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2406 return;
|
|
|
2407 }
|
|
|
2408
|
|
|
2409 if (status) {
|
|
|
2410 u->state->status = status;
|
|
|
2411
|
|
74
|
2412 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2413
|
|
|
2414 #if (NGX_HTTP_CACHE)
|
|
|
2415
|
|
|
2416 if (u->stale && (u->conf->use_stale & ft_type)) {
|
|
|
2417 ngx_http_upstream_finalize_request(r, u,
|
|
74
|
2418 ngx_http_send_cached_response(r));
|
|
28
|
2419 return;
|
|
|
2420 }
|
|
|
2421
|
|
|
2422 #endif
|
|
|
2423
|
|
|
2424 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2425 return;
|
|
|
2426 }
|
|
|
2427 }
|
|
|
2428
|
|
|
2429 if (u->peer.connection) {
|
|
|
2430 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2431 "close http upstream connection: %d",
|
|
|
2432 u->peer.connection->fd);
|
|
126
|
2433 #if (NGX_HTTP_SSL)
|
|
260
|
2434
|
|
126
|
2435 if (u->peer.connection->ssl) {
|
|
260
|
2436 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2437 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2438
|
|
|
2439 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2440 }
|
|
|
2441 #endif
|
|
260
|
2442
|
|
28
|
2443 ngx_close_connection(u->peer.connection);
|
|
|
2444 }
|
|
|
2445
|
|
|
2446 #if 0
|
|
|
2447 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2448 ngx_http_upstream_busy_lock(p);
|
|
|
2449 return;
|
|
|
2450 }
|
|
|
2451 #endif
|
|
|
2452
|
|
|
2453 ngx_http_upstream_connect(r, u);
|
|
|
2454 }
|
|
|
2455
|
|
|
2456
|
|
36
|
2457 static void
|
|
118
|
2458 ngx_http_upstream_cleanup(void *data)
|
|
|
2459 {
|
|
|
2460 ngx_http_request_t *r = data;
|
|
|
2461
|
|
356
|
2462 ngx_http_upstream_t *u;
|
|
|
2463
|
|
118
|
2464 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2465 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2466
|
|
356
|
2467 u = r->upstream;
|
|
|
2468
|
|
|
2469 if (u->resolved && u->resolved->ctx) {
|
|
|
2470 ngx_resolve_name_done(u->resolved->ctx);
|
|
348
|
2471 }
|
|
|
2472
|
|
356
|
2473 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2474 }
|
|
|
2475
|
|
|
2476
|
|
|
2477 static void
|
|
36
|
2478 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2479 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2480 {
|
|
262
|
2481 ngx_time_t *tp;
|
|
112
|
2482
|
|
32
|
2483 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2484 "finalize http upstream request: %i", rc);
|
|
28
|
2485
|
|
118
|
2486 *u->cleanup = NULL;
|
|
|
2487
|
|
348
|
2488 if (u->state && u->state->response_sec) {
|
|
112
|
2489 tp = ngx_timeofday();
|
|
262
|
2490 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2491 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
112
|
2492 }
|
|
|
2493
|
|
28
|
2494 u->finalize_request(r, rc);
|
|
|
2495
|
|
348
|
2496 if (u->peer.free) {
|
|
|
2497 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2498 }
|
|
260
|
2499
|
|
28
|
2500 if (u->peer.connection) {
|
|
260
|
2501
|
|
126
|
2502 #if (NGX_HTTP_SSL)
|
|
|
2503
|
|
|
2504 /* TODO: do not shutdown persistent connection */
|
|
|
2505
|
|
|
2506 if (u->peer.connection->ssl) {
|
|
260
|
2507
|
|
|
2508 /*
|
|
|
2509 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2510 * and do not wait its "close notify" shutdown alert.
|
|
|
2511 * It is acceptable according to the TLS standard.
|
|
|
2512 */
|
|
|
2513
|
|
|
2514 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2515
|
|
|
2516 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2517 }
|
|
|
2518 #endif
|
|
260
|
2519
|
|
|
2520 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2521 "close http upstream connection: %d",
|
|
|
2522 u->peer.connection->fd);
|
|
|
2523
|
|
28
|
2524 ngx_close_connection(u->peer.connection);
|
|
|
2525 }
|
|
|
2526
|
|
32
|
2527 u->peer.connection = NULL;
|
|
|
2528
|
|
112
|
2529 if (u->header_sent && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
28
|
2530 {
|
|
|
2531 rc = 0;
|
|
|
2532 }
|
|
|
2533
|
|
130
|
2534 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2535 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2536 "http upstream temp fd: %d",
|
|
130
|
2537 u->pipe->temp_file->file.fd);
|
|
28
|
2538 }
|
|
|
2539
|
|
|
2540 #if 0
|
|
|
2541 if (u->cache) {
|
|
|
2542 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2543 "http upstream cache fd: %d",
|
|
28
|
2544 u->cache->ctx.file.fd);
|
|
|
2545 }
|
|
|
2546 #endif
|
|
|
2547
|
|
64
|
2548 if (rc == NGX_DECLINED) {
|
|
|
2549 return;
|
|
|
2550 }
|
|
|
2551
|
|
32
|
2552 r->connection->log->action = "sending to client";
|
|
|
2553
|
|
426
|
2554 if (rc == 0 && r == r->main && !r->post_action) {
|
|
|
2555 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
2556 }
|
|
|
2557
|
|
|
2558 ngx_http_finalize_request(r, rc);
|
|
|
2559 }
|
|
|
2560
|
|
|
2561
|
|
58
|
2562 static ngx_int_t
|
|
|
2563 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2564 ngx_uint_t offset)
|
|
126
|
2565 {
|
|
58
|
2566 ngx_table_elt_t **ph;
|
|
126
|
2567
|
|
58
|
2568 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
2569
|
|
|
2570 if (*ph == NULL) {
|
|
|
2571 *ph = h;
|
|
|
2572 }
|
|
|
2573
|
|
|
2574 return NGX_OK;
|
|
|
2575 }
|
|
|
2576
|
|
|
2577
|
|
|
2578 static ngx_int_t
|
|
|
2579 ngx_http_upstream_process_multi_header_lines(ngx_http_request_t *r,
|
|
|
2580 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2581 {
|
|
|
2582 ngx_array_t *pa;
|
|
|
2583 ngx_table_elt_t **ph;
|
|
|
2584
|
|
|
2585 pa = (ngx_array_t *) ((char *) &r->upstream->headers_in + offset);
|
|
|
2586
|
|
|
2587 if (pa->elts == NULL) {
|
|
|
2588 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2589 {
|
|
|
2590 return NGX_ERROR;
|
|
|
2591 }
|
|
|
2592 }
|
|
|
2593
|
|
|
2594 ph = ngx_array_push(pa);
|
|
|
2595 if (ph == NULL) {
|
|
|
2596 return NGX_ERROR;
|
|
|
2597 }
|
|
|
2598
|
|
|
2599 *ph = h;
|
|
|
2600
|
|
|
2601 return NGX_OK;
|
|
|
2602 }
|
|
|
2603
|
|
|
2604
|
|
|
2605 static ngx_int_t
|
|
|
2606 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2607 ngx_uint_t offset)
|
|
|
2608 {
|
|
|
2609 return NGX_OK;
|
|
|
2610 }
|
|
|
2611
|
|
|
2612
|
|
|
2613 static ngx_int_t
|
|
76
|
2614 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2615 ngx_uint_t offset)
|
|
126
|
2616 {
|
|
76
|
2617 ngx_int_t n;
|
|
|
2618
|
|
|
2619 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
2620
|
|
|
2621 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
2622
|
|
|
2623 if (n != NGX_ERROR) {
|
|
|
2624 r->limit_rate = (size_t) n;
|
|
|
2625 }
|
|
|
2626
|
|
|
2627 return NGX_OK;
|
|
|
2628 }
|
|
|
2629
|
|
|
2630
|
|
|
2631 static ngx_int_t
|
|
198
|
2632 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2633 ngx_uint_t offset)
|
|
|
2634 {
|
|
|
2635 u_char c0, c1, c2;
|
|
|
2636
|
|
|
2637 if (r->upstream->conf->change_buffering) {
|
|
|
2638
|
|
|
2639 if (h->value.len == 2) {
|
|
|
2640 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2641 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2642
|
|
|
2643 if (c0 == 'n' && c1 == 'o') {
|
|
|
2644 r->upstream->buffering = 0;
|
|
|
2645 }
|
|
|
2646
|
|
|
2647 } else if (h->value.len == 3) {
|
|
|
2648 c0 = ngx_tolower(h->value.data[0]);
|
|
|
2649 c1 = ngx_tolower(h->value.data[1]);
|
|
|
2650 c2 = ngx_tolower(h->value.data[2]);
|
|
|
2651
|
|
|
2652 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
2653 r->upstream->buffering = 1;
|
|
|
2654 }
|
|
|
2655 }
|
|
|
2656 }
|
|
|
2657
|
|
|
2658 return NGX_OK;
|
|
|
2659 }
|
|
|
2660
|
|
|
2661
|
|
|
2662 static ngx_int_t
|
|
206
|
2663 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2664 ngx_uint_t offset)
|
|
|
2665 {
|
|
|
2666 r->headers_out.override_charset = &h->value;
|
|
|
2667
|
|
|
2668 return NGX_OK;
|
|
|
2669 }
|
|
|
2670
|
|
|
2671
|
|
|
2672 static ngx_int_t
|
|
58
|
2673 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2674 ngx_uint_t offset)
|
|
|
2675 {
|
|
122
|
2676 ngx_table_elt_t *ho, **ph;
|
|
58
|
2677
|
|
|
2678 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2679 if (ho == NULL) {
|
|
|
2680 return NGX_ERROR;
|
|
|
2681 }
|
|
|
2682
|
|
|
2683 *ho = *h;
|
|
|
2684
|
|
122
|
2685 if (offset) {
|
|
|
2686 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
2687 *ph = ho;
|
|
|
2688 }
|
|
|
2689
|
|
58
|
2690 return NGX_OK;
|
|
|
2691 }
|
|
|
2692
|
|
|
2693
|
|
|
2694 static ngx_int_t
|
|
|
2695 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
2696 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2697 {
|
|
|
2698 ngx_array_t *pa;
|
|
|
2699 ngx_table_elt_t *ho, **ph;
|
|
|
2700
|
|
|
2701 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
2702
|
|
|
2703 if (pa->elts == NULL) {
|
|
|
2704 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
2705 {
|
|
|
2706 return NGX_ERROR;
|
|
|
2707 }
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 ph = ngx_array_push(pa);
|
|
|
2711 if (ph == NULL) {
|
|
|
2712 return NGX_ERROR;
|
|
|
2713 }
|
|
|
2714
|
|
|
2715 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2716 if (ho == NULL) {
|
|
|
2717 return NGX_ERROR;
|
|
|
2718 }
|
|
|
2719
|
|
|
2720 *ho = *h;
|
|
|
2721 *ph = ho;
|
|
|
2722
|
|
|
2723 return NGX_OK;
|
|
|
2724 }
|
|
|
2725
|
|
|
2726
|
|
|
2727 static ngx_int_t
|
|
|
2728 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2729 ngx_uint_t offset)
|
|
|
2730 {
|
|
206
|
2731 u_char *p, *last;
|
|
|
2732
|
|
|
2733 r->headers_out.content_type_len = h->value.len;
|
|
58
|
2734 r->headers_out.content_type = h->value;
|
|
|
2735
|
|
206
|
2736 for (p = h->value.data; *p; p++) {
|
|
|
2737
|
|
|
2738 if (*p != ';') {
|
|
|
2739 continue;
|
|
|
2740 }
|
|
|
2741
|
|
|
2742 last = p;
|
|
|
2743
|
|
|
2744 while (*++p == ' ') { /* void */ }
|
|
|
2745
|
|
372
|
2746 if (*p == '\0') {
|
|
|
2747 return NGX_OK;
|
|
|
2748 }
|
|
|
2749
|
|
286
|
2750 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
2751 continue;
|
|
|
2752 }
|
|
|
2753
|
|
|
2754 p += 8;
|
|
|
2755
|
|
|
2756 r->headers_out.content_type_len = last - h->value.data;
|
|
|
2757
|
|
410
|
2758 if (*p == '"') {
|
|
|
2759 p++;
|
|
|
2760 }
|
|
|
2761
|
|
|
2762 last = h->value.data + h->value.len;
|
|
|
2763
|
|
|
2764 if (*(last - 1) == '"') {
|
|
|
2765 last--;
|
|
|
2766 }
|
|
|
2767
|
|
|
2768 r->headers_out.charset.len = last - p;
|
|
206
|
2769 r->headers_out.charset.data = p;
|
|
292
|
2770
|
|
|
2771 return NGX_OK;
|
|
206
|
2772 }
|
|
|
2773
|
|
58
|
2774 return NGX_OK;
|
|
|
2775 }
|
|
|
2776
|
|
|
2777
|
|
|
2778 static ngx_int_t
|
|
|
2779 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2780 ngx_uint_t offset)
|
|
|
2781 {
|
|
|
2782 ngx_table_elt_t *ho;
|
|
|
2783
|
|
|
2784 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2785 if (ho == NULL) {
|
|
|
2786 return NGX_ERROR;
|
|
|
2787 }
|
|
|
2788
|
|
|
2789 *ho = *h;
|
|
|
2790
|
|
|
2791 r->headers_out.content_length = ho;
|
|
|
2792 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
2793
|
|
|
2794 return NGX_OK;
|
|
|
2795 }
|
|
|
2796
|
|
|
2797
|
|
|
2798 static ngx_int_t
|
|
|
2799 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2800 ngx_uint_t offset)
|
|
|
2801 {
|
|
|
2802 ngx_int_t rc;
|
|
|
2803 ngx_table_elt_t *ho;
|
|
|
2804
|
|
|
2805 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2806 if (ho == NULL) {
|
|
|
2807 return NGX_ERROR;
|
|
|
2808 }
|
|
|
2809
|
|
|
2810 *ho = *h;
|
|
|
2811
|
|
|
2812 if (r->upstream->rewrite_redirect) {
|
|
|
2813 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
2814
|
|
78
|
2815 if (rc == NGX_DECLINED) {
|
|
|
2816 return NGX_OK;
|
|
|
2817 }
|
|
|
2818
|
|
58
|
2819 if (rc == NGX_OK) {
|
|
|
2820 r->headers_out.location = ho;
|
|
|
2821
|
|
|
2822 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2823 "rewritten location: \"%V\"", &ho->value);
|
|
|
2824 }
|
|
|
2825
|
|
|
2826 return rc;
|
|
|
2827 }
|
|
|
2828
|
|
348
|
2829 if (ho->value.data[0] != '/') {
|
|
|
2830 r->headers_out.location = ho;
|
|
|
2831 }
|
|
|
2832
|
|
58
|
2833 /*
|
|
|
2834 * we do not set r->headers_out.location here to avoid the handling
|
|
|
2835 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
2836 */
|
|
|
2837
|
|
|
2838 return NGX_OK;
|
|
|
2839 }
|
|
|
2840
|
|
|
2841
|
|
|
2842 static ngx_int_t
|
|
|
2843 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
2844 ngx_uint_t offset)
|
|
|
2845 {
|
|
|
2846 u_char *p;
|
|
|
2847 ngx_int_t rc;
|
|
|
2848 ngx_table_elt_t *ho;
|
|
|
2849
|
|
|
2850 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2851 if (ho == NULL) {
|
|
|
2852 return NGX_ERROR;
|
|
|
2853 }
|
|
|
2854
|
|
|
2855 *ho = *h;
|
|
|
2856
|
|
|
2857 if (r->upstream->rewrite_redirect) {
|
|
|
2858
|
|
340
|
2859 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
2860
|
|
|
2861 if (p) {
|
|
|
2862 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
2863
|
|
|
2864 } else {
|
|
|
2865 return NGX_OK;
|
|
|
2866 }
|
|
|
2867
|
|
78
|
2868 if (rc == NGX_DECLINED) {
|
|
|
2869 return NGX_OK;
|
|
|
2870 }
|
|
|
2871
|
|
58
|
2872 if (rc == NGX_OK) {
|
|
348
|
2873 r->headers_out.refresh = ho;
|
|
|
2874
|
|
58
|
2875 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2876 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
2877 }
|
|
|
2878
|
|
|
2879 return rc;
|
|
|
2880 }
|
|
|
2881
|
|
348
|
2882 r->headers_out.refresh = ho;
|
|
|
2883
|
|
58
|
2884 return NGX_OK;
|
|
|
2885 }
|
|
|
2886
|
|
|
2887
|
|
|
2888 #if (NGX_HTTP_GZIP)
|
|
|
2889
|
|
|
2890 static ngx_int_t
|
|
|
2891 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
2892 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
2893 {
|
|
|
2894 ngx_table_elt_t *ho;
|
|
|
2895
|
|
|
2896 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
2897 if (ho == NULL) {
|
|
|
2898 return NGX_ERROR;
|
|
|
2899 }
|
|
|
2900
|
|
|
2901 *ho = *h;
|
|
|
2902
|
|
|
2903 r->headers_out.content_encoding = ho;
|
|
|
2904
|
|
|
2905 return NGX_OK;
|
|
|
2906 }
|
|
|
2907
|
|
|
2908 #endif
|
|
|
2909
|
|
|
2910
|
|
36
|
2911 static ngx_int_t
|
|
122
|
2912 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
2913 {
|
|
260
|
2914 ngx_http_variable_t *var, *v;
|
|
28
|
2915
|
|
122
|
2916 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
2917 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
2918 if (var == NULL) {
|
|
|
2919 return NGX_ERROR;
|
|
|
2920 }
|
|
|
2921
|
|
186
|
2922 var->get_handler = v->get_handler;
|
|
122
|
2923 var->data = v->data;
|
|
|
2924 }
|
|
|
2925
|
|
28
|
2926 return NGX_OK;
|
|
|
2927 }
|
|
58
|
2928
|
|
|
2929
|
|
122
|
2930 static ngx_int_t
|
|
298
|
2931 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
2932 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
2933 {
|
|
|
2934 u_char *p;
|
|
|
2935 size_t len;
|
|
|
2936 ngx_uint_t i;
|
|
|
2937 ngx_http_upstream_state_t *state;
|
|
|
2938
|
|
|
2939 v->valid = 1;
|
|
340
|
2940 v->no_cacheable = 0;
|
|
298
|
2941 v->not_found = 0;
|
|
|
2942
|
|
|
2943 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
2944 v->not_found = 1;
|
|
|
2945 return NGX_OK;
|
|
|
2946 }
|
|
|
2947
|
|
|
2948 len = 0;
|
|
|
2949 state = r->upstream_states->elts;
|
|
|
2950
|
|
|
2951 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
2952 if (state[i].peer) {
|
|
|
2953 len += state[i].peer->len + 2;
|
|
|
2954
|
|
|
2955 } else {
|
|
|
2956 len += 3;
|
|
|
2957 }
|
|
|
2958 }
|
|
|
2959
|
|
382
|
2960 p = ngx_pnalloc(r->pool, len);
|
|
298
|
2961 if (p == NULL) {
|
|
|
2962 return NGX_ERROR;
|
|
|
2963 }
|
|
|
2964
|
|
|
2965 v->data = p;
|
|
|
2966
|
|
|
2967 i = 0;
|
|
|
2968
|
|
|
2969 for ( ;; ) {
|
|
|
2970 if (state[i].peer) {
|
|
|
2971 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
2972 }
|
|
|
2973
|
|
|
2974 if (++i == r->upstream_states->nelts) {
|
|
|
2975 break;
|
|
|
2976 }
|
|
|
2977
|
|
|
2978 if (state[i].peer) {
|
|
|
2979 *p++ = ',';
|
|
|
2980 *p++ = ' ';
|
|
|
2981
|
|
|
2982 } else {
|
|
|
2983 *p++ = ' ';
|
|
|
2984 *p++ = ':';
|
|
|
2985 *p++ = ' ';
|
|
|
2986
|
|
|
2987 if (++i == r->upstream_states->nelts) {
|
|
|
2988 break;
|
|
|
2989 }
|
|
|
2990
|
|
|
2991 continue;
|
|
|
2992 }
|
|
|
2993 }
|
|
|
2994
|
|
|
2995 v->len = p - v->data;
|
|
|
2996
|
|
|
2997 return NGX_OK;
|
|
|
2998 }
|
|
|
2999
|
|
|
3000
|
|
|
3001 static ngx_int_t
|
|
122
|
3002 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3003 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3004 {
|
|
|
3005 u_char *p;
|
|
|
3006 size_t len;
|
|
|
3007 ngx_uint_t i;
|
|
|
3008 ngx_http_upstream_state_t *state;
|
|
|
3009
|
|
|
3010 v->valid = 1;
|
|
340
|
3011 v->no_cacheable = 0;
|
|
122
|
3012 v->not_found = 0;
|
|
|
3013
|
|
296
|
3014 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3015 v->not_found = 1;
|
|
|
3016 return NGX_OK;
|
|
|
3017 }
|
|
|
3018
|
|
296
|
3019 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3020
|
|
382
|
3021 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3022 if (p == NULL) {
|
|
|
3023 return NGX_ERROR;
|
|
|
3024 }
|
|
|
3025
|
|
|
3026 v->data = p;
|
|
|
3027
|
|
|
3028 i = 0;
|
|
296
|
3029 state = r->upstream_states->elts;
|
|
122
|
3030
|
|
|
3031 for ( ;; ) {
|
|
296
|
3032 if (state[i].status) {
|
|
|
3033 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3034
|
|
|
3035 } else {
|
|
296
|
3036 *p++ = '-';
|
|
122
|
3037 }
|
|
|
3038
|
|
296
|
3039 if (++i == r->upstream_states->nelts) {
|
|
122
|
3040 break;
|
|
|
3041 }
|
|
|
3042
|
|
296
|
3043 if (state[i].peer) {
|
|
|
3044 *p++ = ',';
|
|
|
3045 *p++ = ' ';
|
|
|
3046
|
|
|
3047 } else {
|
|
|
3048 *p++ = ' ';
|
|
|
3049 *p++ = ':';
|
|
|
3050 *p++ = ' ';
|
|
|
3051
|
|
|
3052 if (++i == r->upstream_states->nelts) {
|
|
|
3053 break;
|
|
|
3054 }
|
|
|
3055
|
|
|
3056 continue;
|
|
|
3057 }
|
|
122
|
3058 }
|
|
|
3059
|
|
|
3060 v->len = p - v->data;
|
|
|
3061
|
|
|
3062 return NGX_OK;
|
|
|
3063 }
|
|
|
3064
|
|
|
3065
|
|
|
3066 static ngx_int_t
|
|
|
3067 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3068 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3069 {
|
|
|
3070 u_char *p;
|
|
|
3071 size_t len;
|
|
|
3072 ngx_uint_t i;
|
|
262
|
3073 ngx_msec_int_t ms;
|
|
122
|
3074 ngx_http_upstream_state_t *state;
|
|
|
3075
|
|
|
3076 v->valid = 1;
|
|
340
|
3077 v->no_cacheable = 0;
|
|
122
|
3078 v->not_found = 0;
|
|
|
3079
|
|
296
|
3080 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3081 v->not_found = 1;
|
|
|
3082 return NGX_OK;
|
|
|
3083 }
|
|
|
3084
|
|
296
|
3085 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3086
|
|
382
|
3087 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3088 if (p == NULL) {
|
|
|
3089 return NGX_ERROR;
|
|
|
3090 }
|
|
|
3091
|
|
|
3092 v->data = p;
|
|
|
3093
|
|
|
3094 i = 0;
|
|
296
|
3095 state = r->upstream_states->elts;
|
|
122
|
3096
|
|
|
3097 for ( ;; ) {
|
|
296
|
3098 if (state[i].status) {
|
|
346
|
3099 ms = (ngx_msec_int_t)
|
|
|
3100 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
262
|
3101 ms = (ms >= 0) ? ms : 0;
|
|
|
3102 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3103
|
|
|
3104 } else {
|
|
|
3105 *p++ = '-';
|
|
122
|
3106 }
|
|
|
3107
|
|
296
|
3108 if (++i == r->upstream_states->nelts) {
|
|
122
|
3109 break;
|
|
|
3110 }
|
|
|
3111
|
|
296
|
3112 if (state[i].peer) {
|
|
|
3113 *p++ = ',';
|
|
|
3114 *p++ = ' ';
|
|
|
3115
|
|
|
3116 } else {
|
|
|
3117 *p++ = ' ';
|
|
|
3118 *p++ = ':';
|
|
|
3119 *p++ = ' ';
|
|
|
3120
|
|
|
3121 if (++i == r->upstream_states->nelts) {
|
|
|
3122 break;
|
|
|
3123 }
|
|
|
3124
|
|
|
3125 continue;
|
|
|
3126 }
|
|
122
|
3127 }
|
|
|
3128
|
|
|
3129 v->len = p - v->data;
|
|
|
3130
|
|
|
3131 return NGX_OK;
|
|
|
3132 }
|
|
|
3133
|
|
|
3134
|
|
296
|
3135 ngx_int_t
|
|
|
3136 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3137 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3138 {
|
|
|
3139 if (r->upstream == NULL) {
|
|
|
3140 v->not_found = 1;
|
|
|
3141 return NGX_OK;
|
|
|
3142 }
|
|
|
3143
|
|
|
3144 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3145 &r->upstream->headers_in.headers.part,
|
|
|
3146 sizeof("upstream_http_") - 1);
|
|
|
3147 }
|
|
|
3148
|
|
|
3149
|
|
200
|
3150 static char *
|
|
|
3151 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3152 {
|
|
260
|
3153 char *rv;
|
|
|
3154 void *mconf;
|
|
|
3155 ngx_str_t *value;
|
|
|
3156 ngx_url_t u;
|
|
|
3157 ngx_uint_t m;
|
|
|
3158 ngx_conf_t pcf;
|
|
|
3159 ngx_http_module_t *module;
|
|
|
3160 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3161 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3162
|
|
|
3163 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3164
|
|
|
3165 value = cf->args->elts;
|
|
|
3166 u.host = value[1];
|
|
|
3167 u.no_resolve = 1;
|
|
|
3168
|
|
|
3169 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3170 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3171 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3172 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3173 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3174 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3175 if (uscf == NULL) {
|
|
|
3176 return NGX_CONF_ERROR;
|
|
|
3177 }
|
|
|
3178
|
|
200
|
3179
|
|
|
3180 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3181 if (ctx == NULL) {
|
|
|
3182 return NGX_CONF_ERROR;
|
|
|
3183 }
|
|
|
3184
|
|
260
|
3185 http_ctx = cf->ctx;
|
|
|
3186 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3187
|
|
|
3188 /* the upstream{}'s srv_conf */
|
|
|
3189
|
|
|
3190 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3191 if (ctx->srv_conf == NULL) {
|
|
|
3192 return NGX_CONF_ERROR;
|
|
|
3193 }
|
|
|
3194
|
|
|
3195 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3196
|
|
260
|
3197 uscf->srv_conf = ctx->srv_conf;
|
|
|
3198
|
|
200
|
3199
|
|
|
3200 /* the upstream{}'s loc_conf */
|
|
|
3201
|
|
|
3202 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3203 if (ctx->loc_conf == NULL) {
|
|
|
3204 return NGX_CONF_ERROR;
|
|
|
3205 }
|
|
|
3206
|
|
|
3207 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3208 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3209 continue;
|
|
|
3210 }
|
|
|
3211
|
|
|
3212 module = ngx_modules[m]->ctx;
|
|
|
3213
|
|
260
|
3214 if (module->create_srv_conf) {
|
|
|
3215 mconf = module->create_srv_conf(cf);
|
|
|
3216 if (mconf == NULL) {
|
|
|
3217 return NGX_CONF_ERROR;
|
|
|
3218 }
|
|
|
3219
|
|
|
3220 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3221 }
|
|
|
3222
|
|
200
|
3223 if (module->create_loc_conf) {
|
|
|
3224 mconf = module->create_loc_conf(cf);
|
|
|
3225 if (mconf == NULL) {
|
|
|
3226 return NGX_CONF_ERROR;
|
|
|
3227 }
|
|
|
3228
|
|
|
3229 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3230 }
|
|
|
3231 }
|
|
|
3232
|
|
|
3233
|
|
|
3234 /* parse inside upstream{} */
|
|
|
3235
|
|
|
3236 pcf = *cf;
|
|
|
3237 cf->ctx = ctx;
|
|
|
3238 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
3239
|
|
|
3240 rv = ngx_conf_parse(cf, NULL);
|
|
|
3241
|
|
|
3242 *cf = pcf;
|
|
|
3243
|
|
|
3244 if (rv != NGX_CONF_OK) {
|
|
|
3245 return rv;
|
|
|
3246 }
|
|
|
3247
|
|
|
3248 if (uscf->servers == NULL) {
|
|
|
3249 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3250 "no servers are inside upstream");
|
|
|
3251 return NGX_CONF_ERROR;
|
|
|
3252 }
|
|
|
3253
|
|
|
3254 return rv;
|
|
|
3255 }
|
|
|
3256
|
|
|
3257
|
|
|
3258 static char *
|
|
|
3259 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
3260 {
|
|
|
3261 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
3262
|
|
260
|
3263 time_t fail_timeout;
|
|
|
3264 ngx_str_t *value, s;
|
|
|
3265 ngx_url_t u;
|
|
|
3266 ngx_int_t weight, max_fails;
|
|
|
3267 ngx_uint_t i;
|
|
|
3268 ngx_http_upstream_server_t *us;
|
|
200
|
3269
|
|
|
3270 if (uscf->servers == NULL) {
|
|
260
|
3271 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
3272 sizeof(ngx_http_upstream_server_t));
|
|
200
|
3273 if (uscf->servers == NULL) {
|
|
|
3274 return NGX_CONF_ERROR;
|
|
|
3275 }
|
|
|
3276 }
|
|
|
3277
|
|
260
|
3278 us = ngx_array_push(uscf->servers);
|
|
|
3279 if (us == NULL) {
|
|
200
|
3280 return NGX_CONF_ERROR;
|
|
|
3281 }
|
|
|
3282
|
|
260
|
3283 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3284
|
|
200
|
3285 value = cf->args->elts;
|
|
|
3286
|
|
|
3287 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3288
|
|
|
3289 u.url = value[1];
|
|
266
|
3290 u.default_port = 80;
|
|
200
|
3291
|
|
340
|
3292 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
3293 if (u.err) {
|
|
|
3294 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3295 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
3296 }
|
|
|
3297
|
|
|
3298 return NGX_CONF_ERROR;
|
|
|
3299 }
|
|
|
3300
|
|
212
|
3301 weight = 1;
|
|
260
|
3302 max_fails = 1;
|
|
|
3303 fail_timeout = 10;
|
|
|
3304
|
|
|
3305 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
3306
|
|
|
3307 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
3308
|
|
|
3309 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
3310 goto invalid;
|
|
|
3311 }
|
|
|
3312
|
|
|
3313 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
3314
|
|
|
3315 if (weight == NGX_ERROR || weight == 0) {
|
|
|
3316 goto invalid;
|
|
|
3317 }
|
|
|
3318
|
|
260
|
3319 continue;
|
|
|
3320 }
|
|
|
3321
|
|
|
3322 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
3323
|
|
|
3324 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
3325 goto invalid;
|
|
|
3326 }
|
|
|
3327
|
|
|
3328 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
3329
|
|
|
3330 if (max_fails == NGX_ERROR) {
|
|
|
3331 goto invalid;
|
|
|
3332 }
|
|
|
3333
|
|
|
3334 continue;
|
|
212
|
3335 }
|
|
260
|
3336
|
|
|
3337 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
3338
|
|
|
3339 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
3340 goto invalid;
|
|
|
3341 }
|
|
|
3342
|
|
|
3343 s.len = value[i].len - 13;
|
|
|
3344 s.data = &value[i].data[13];
|
|
|
3345
|
|
|
3346 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
3347
|
|
372
|
3348 if (fail_timeout == NGX_ERROR) {
|
|
260
|
3349 goto invalid;
|
|
|
3350 }
|
|
|
3351
|
|
|
3352 continue;
|
|
|
3353 }
|
|
|
3354
|
|
326
|
3355 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
3356
|
|
|
3357 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
3358 goto invalid;
|
|
|
3359 }
|
|
|
3360
|
|
|
3361 us->backup = 1;
|
|
|
3362
|
|
|
3363 continue;
|
|
|
3364 }
|
|
|
3365
|
|
260
|
3366 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
3367
|
|
|
3368 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
3369 goto invalid;
|
|
|
3370 }
|
|
|
3371
|
|
|
3372 us->down = 1;
|
|
|
3373
|
|
|
3374 continue;
|
|
|
3375 }
|
|
|
3376
|
|
|
3377 goto invalid;
|
|
212
|
3378 }
|
|
|
3379
|
|
260
|
3380 us->addrs = u.addrs;
|
|
|
3381 us->naddrs = u.naddrs;
|
|
|
3382 us->weight = weight;
|
|
|
3383 us->max_fails = max_fails;
|
|
|
3384 us->fail_timeout = fail_timeout;
|
|
200
|
3385
|
|
|
3386 return NGX_CONF_OK;
|
|
212
|
3387
|
|
|
3388 invalid:
|
|
|
3389
|
|
260
|
3390 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3391 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
3392
|
|
|
3393 return NGX_CONF_ERROR;
|
|
200
|
3394 }
|
|
|
3395
|
|
|
3396
|
|
|
3397 ngx_http_upstream_srv_conf_t *
|
|
260
|
3398 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
3399 {
|
|
|
3400 ngx_uint_t i;
|
|
260
|
3401 ngx_http_upstream_server_t *us;
|
|
200
|
3402 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
3403 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3404
|
|
260
|
3405 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
3406
|
|
340
|
3407 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
3408 if (u->err) {
|
|
|
3409 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3410 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
3411 }
|
|
|
3412
|
|
|
3413 return NULL;
|
|
|
3414 }
|
|
|
3415 }
|
|
|
3416
|
|
|
3417 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
3418
|
|
|
3419 uscfp = umcf->upstreams.elts;
|
|
|
3420
|
|
|
3421 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
3422
|
|
|
3423 if (uscfp[i]->host.len != u->host.len
|
|
260
|
3424 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
3425 != 0)
|
|
|
3426 {
|
|
200
|
3427 continue;
|
|
|
3428 }
|
|
|
3429
|
|
260
|
3430 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
3431 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
3432 {
|
|
260
|
3433 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
3434 "duplicate upstream \"%V\"", &u->host);
|
|
|
3435 return NULL;
|
|
200
|
3436 }
|
|
260
|
3437
|
|
266
|
3438 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
3439 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
3440 "upstream \"%V\" may not have port %d",
|
|
|
3441 &u->host, u->port);
|
|
|
3442 return NULL;
|
|
|
3443 }
|
|
|
3444
|
|
|
3445 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
3446 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
3447 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
3448 &u->host, uscfp[i]->port,
|
|
336
|
3449 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
3450 return NULL;
|
|
|
3451 }
|
|
|
3452
|
|
|
3453 if (uscfp[i]->port != u->port) {
|
|
|
3454 continue;
|
|
260
|
3455 }
|
|
|
3456
|
|
324
|
3457 if (uscfp[i]->default_port && u->default_port
|
|
|
3458 && uscfp[i]->default_port != u->default_port)
|
|
|
3459 {
|
|
|
3460 continue;
|
|
|
3461 }
|
|
|
3462
|
|
260
|
3463 return uscfp[i];
|
|
200
|
3464 }
|
|
|
3465
|
|
|
3466 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
3467 if (uscf == NULL) {
|
|
|
3468 return NULL;
|
|
|
3469 }
|
|
|
3470
|
|
260
|
3471 uscf->flags = flags;
|
|
200
|
3472 uscf->host = u->host;
|
|
336
|
3473 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
3474 uscf->line = cf->conf_file->line;
|
|
266
|
3475 uscf->port = u->port;
|
|
|
3476 uscf->default_port = u->default_port;
|
|
260
|
3477
|
|
|
3478 if (u->naddrs == 1) {
|
|
|
3479 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
3480 sizeof(ngx_http_upstream_server_t));
|
|
|
3481 if (uscf->servers == NULL) {
|
|
|
3482 return NGX_CONF_ERROR;
|
|
|
3483 }
|
|
|
3484
|
|
|
3485 us = ngx_array_push(uscf->servers);
|
|
|
3486 if (us == NULL) {
|
|
|
3487 return NGX_CONF_ERROR;
|
|
|
3488 }
|
|
|
3489
|
|
|
3490 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
3491
|
|
|
3492 us->addrs = u->addrs;
|
|
|
3493 us->naddrs = u->naddrs;
|
|
|
3494 }
|
|
200
|
3495
|
|
|
3496 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
3497 if (uscfp == NULL) {
|
|
|
3498 return NULL;
|
|
|
3499 }
|
|
|
3500
|
|
|
3501 *uscfp = uscf;
|
|
|
3502
|
|
|
3503 return uscf;
|
|
|
3504 }
|
|
|
3505
|
|
|
3506
|
|
356
|
3507 ngx_int_t
|
|
|
3508 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
3509 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
3510 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
3511 {
|
|
|
3512 ngx_str_t *h;
|
|
|
3513 ngx_uint_t i, j;
|
|
|
3514 ngx_array_t hide_headers;
|
|
|
3515 ngx_hash_key_t *hk;
|
|
|
3516
|
|
|
3517 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
3518 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
3519 {
|
|
|
3520 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
3521
|
|
|
3522 if (conf->hide_headers_hash.buckets) {
|
|
|
3523 return NGX_OK;
|
|
|
3524 }
|
|
|
3525
|
|
|
3526 conf->hide_headers = prev->hide_headers;
|
|
|
3527 conf->pass_headers = prev->pass_headers;
|
|
|
3528
|
|
|
3529 } else {
|
|
|
3530 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3531 conf->hide_headers = prev->hide_headers;
|
|
|
3532 }
|
|
|
3533
|
|
|
3534 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
3535 conf->pass_headers = prev->pass_headers;
|
|
|
3536 }
|
|
|
3537 }
|
|
|
3538
|
|
|
3539 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
3540 != NGX_OK)
|
|
|
3541 {
|
|
|
3542 return NGX_ERROR;
|
|
|
3543 }
|
|
|
3544
|
|
|
3545 for (h = default_hide_headers; h->len; h++) {
|
|
|
3546 hk = ngx_array_push(&hide_headers);
|
|
|
3547 if (hk == NULL) {
|
|
|
3548 return NGX_ERROR;
|
|
|
3549 }
|
|
|
3550
|
|
|
3551 hk->key = *h;
|
|
|
3552 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
3553 hk->value = (void *) 1;
|
|
|
3554 }
|
|
|
3555
|
|
|
3556 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3557
|
|
|
3558 h = conf->hide_headers->elts;
|
|
|
3559
|
|
|
3560 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
3561
|
|
|
3562 hk = hide_headers.elts;
|
|
|
3563
|
|
|
3564 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3565 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3566 goto exist;
|
|
|
3567 }
|
|
|
3568 }
|
|
|
3569
|
|
|
3570 hk = ngx_array_push(&hide_headers);
|
|
|
3571 if (hk == NULL) {
|
|
|
3572 return NGX_ERROR;
|
|
|
3573 }
|
|
|
3574
|
|
|
3575 hk->key = h[i];
|
|
|
3576 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
3577 hk->value = (void *) 1;
|
|
|
3578
|
|
|
3579 exist:
|
|
|
3580
|
|
|
3581 continue;
|
|
|
3582 }
|
|
|
3583 }
|
|
|
3584
|
|
|
3585 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
3586
|
|
|
3587 h = conf->pass_headers->elts;
|
|
|
3588 hk = hide_headers.elts;
|
|
|
3589
|
|
|
3590 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
3591 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
3592
|
|
|
3593 if (hk[j].key.data == NULL) {
|
|
|
3594 continue;
|
|
|
3595 }
|
|
|
3596
|
|
|
3597 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
3598 hk[j].key.data = NULL;
|
|
|
3599 break;
|
|
|
3600 }
|
|
|
3601 }
|
|
|
3602 }
|
|
|
3603 }
|
|
|
3604
|
|
|
3605 hash->hash = &conf->hide_headers_hash;
|
|
|
3606 hash->key = ngx_hash_key_lc;
|
|
|
3607 hash->pool = cf->pool;
|
|
|
3608 hash->temp_pool = NULL;
|
|
|
3609
|
|
|
3610 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
3611 }
|
|
|
3612
|
|
|
3613
|
|
58
|
3614 static void *
|
|
|
3615 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
3616 {
|
|
|
3617 ngx_http_upstream_main_conf_t *umcf;
|
|
|
3618
|
|
|
3619 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
3620 if (umcf == NULL) {
|
|
|
3621 return NULL;
|
|
|
3622 }
|
|
|
3623
|
|
200
|
3624 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
3625 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
3626 != NGX_OK)
|
|
|
3627 {
|
|
|
3628 return NGX_CONF_ERROR;
|
|
|
3629 }
|
|
|
3630
|
|
58
|
3631 return umcf;
|
|
|
3632 }
|
|
|
3633
|
|
|
3634
|
|
|
3635 static char *
|
|
200
|
3636 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
3637 {
|
|
|
3638 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
3639
|
|
200
|
3640 ngx_uint_t i;
|
|
|
3641 ngx_array_t headers_in;
|
|
|
3642 ngx_hash_key_t *hk;
|
|
|
3643 ngx_hash_init_t hash;
|
|
260
|
3644 ngx_http_upstream_init_pt init;
|
|
200
|
3645 ngx_http_upstream_header_t *header;
|
|
|
3646 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
3647
|
|
|
3648 uscfp = umcf->upstreams.elts;
|
|
|
3649
|
|
|
3650 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
3651
|
|
|
3652 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
3653 ngx_http_upstream_init_round_robin;
|
|
|
3654
|
|
|
3655 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
3656 return NGX_CONF_ERROR;
|
|
|
3657 }
|
|
|
3658 }
|
|
198
|
3659
|
|
212
|
3660
|
|
260
|
3661 /* upstream_headers_in_hash */
|
|
|
3662
|
|
198
|
3663 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
3664 != NGX_OK)
|
|
58
|
3665 {
|
|
|
3666 return NGX_CONF_ERROR;
|
|
|
3667 }
|
|
|
3668
|
|
198
|
3669 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
3670 hk = ngx_array_push(&headers_in);
|
|
|
3671 if (hk == NULL) {
|
|
|
3672 return NGX_CONF_ERROR;
|
|
|
3673 }
|
|
|
3674
|
|
|
3675 hk->key = header->name;
|
|
|
3676 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
3677 hk->value = header;
|
|
|
3678 }
|
|
|
3679
|
|
|
3680 hash.hash = &umcf->headers_in_hash;
|
|
|
3681 hash.key = ngx_hash_key_lc;
|
|
|
3682 hash.max_size = 512;
|
|
244
|
3683 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
3684 hash.name = "upstream_headers_in_hash";
|
|
|
3685 hash.pool = cf->pool;
|
|
|
3686 hash.temp_pool = NULL;
|
|
|
3687
|
|
|
3688 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
3689 return NGX_CONF_ERROR;
|
|
|
3690 }
|
|
58
|
3691
|
|
|
3692 return NGX_CONF_OK;
|
|
|
3693 }
|
