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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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503
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12 #if (NGX_HTTP_CACHE)
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13 static ngx_int_t ngx_http_upstream_cache(ngx_http_request_t *r,
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14 ngx_http_upstream_t *u);
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15 static ngx_int_t ngx_http_upstream_cache_send(ngx_http_request_t *r,
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16 ngx_http_upstream_t *u);
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542
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17 static ngx_int_t ngx_http_upstream_cache_status(ngx_http_request_t *r,
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18 ngx_http_variable_value_t *v, uintptr_t data);
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503
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19 #endif
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20
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558
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21 static void ngx_http_upstream_init_request(ngx_http_request_t *r);
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348
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22 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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23 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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24 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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25 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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26 ngx_event_t *ev);
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28
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27 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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28 ngx_http_upstream_t *u);
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58
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29 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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30 ngx_http_upstream_t *u);
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28
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31 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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32 ngx_http_upstream_t *u);
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459
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33 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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34 ngx_http_upstream_t *u);
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35 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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36 ngx_http_upstream_t *u);
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440
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37 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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38 ngx_http_upstream_t *u);
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39 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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40 ngx_http_upstream_t *u);
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294
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41 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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503
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42 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
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43 ngx_http_upstream_t *u);
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459
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44 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
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45 ngx_http_upstream_t *u);
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28
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46 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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47 ngx_http_upstream_t *u);
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130
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48 static void
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49 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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459
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50 static void
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51 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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52 ngx_http_upstream_t *u);
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457
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53 static void
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54 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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55 ngx_uint_t do_write);
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130
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56 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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57 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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58 ssize_t bytes);
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58
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59 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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459
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60 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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61 ngx_http_upstream_t *u);
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457
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62 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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63 static void ngx_http_upstream_store(ngx_http_request_t *r,
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64 ngx_http_upstream_t *u);
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459
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65 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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66 ngx_http_upstream_t *u);
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28
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67 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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68 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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69 static void ngx_http_upstream_cleanup(void *data);
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28
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70 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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36
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71 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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72
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58
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73 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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74 ngx_table_elt_t *h, ngx_uint_t offset);
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627
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75 static ngx_int_t ngx_http_upstream_process_set_cookie(ngx_http_request_t *r,
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76 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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77 static ngx_int_t
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512
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78 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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58
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79 ngx_table_elt_t *h, ngx_uint_t offset);
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80 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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81 ngx_table_elt_t *h, ngx_uint_t offset);
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512
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82 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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83 ngx_table_elt_t *h, ngx_uint_t offset);
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84 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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85 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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86 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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87 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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88 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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89 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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90 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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91 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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92 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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93 ngx_table_elt_t *h, ngx_uint_t offset);
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94 static ngx_int_t
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95 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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96 ngx_table_elt_t *h, ngx_uint_t offset);
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97 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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98 ngx_table_elt_t *h, ngx_uint_t offset);
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99 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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100 ngx_table_elt_t *h, ngx_uint_t offset);
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503
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101 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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102 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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103 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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104 ngx_table_elt_t *h, ngx_uint_t offset);
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105 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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106 ngx_table_elt_t *h, ngx_uint_t offset);
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503
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107 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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108 ngx_table_elt_t *h, ngx_uint_t offset);
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109
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58
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110 #if (NGX_HTTP_GZIP)
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111 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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112 ngx_table_elt_t *h, ngx_uint_t offset);
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113 #endif
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114
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122
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115 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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116 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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117 ngx_http_variable_value_t *v, uintptr_t data);
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122
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118 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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119 ngx_http_variable_value_t *v, uintptr_t data);
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120 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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121 ngx_http_variable_value_t *v, uintptr_t data);
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459
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122 static ngx_int_t ngx_http_upstream_response_length_variable(
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123 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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124
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200
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125 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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126 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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127 void *conf);
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128
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58
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129 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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130 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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131
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126
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132 #if (NGX_HTTP_SSL)
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140
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133 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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134 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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135 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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136 #endif
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137
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58
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138
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139 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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140
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141 { ngx_string("Status"),
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142 ngx_http_upstream_process_header_line,
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143 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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144 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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145
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146 { ngx_string("Content-Type"),
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147 ngx_http_upstream_process_header_line,
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148 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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149 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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150
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151 { ngx_string("Content-Length"),
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152 ngx_http_upstream_process_header_line,
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153 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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154 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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155
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156 { ngx_string("Date"),
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157 ngx_http_upstream_process_header_line,
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158 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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159 ngx_http_upstream_copy_header_line,
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160 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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161
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318
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162 { ngx_string("Last-Modified"),
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163 ngx_http_upstream_process_header_line,
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164 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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503
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165 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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166
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556
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167 { ngx_string("ETag"),
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168 ngx_http_upstream_process_header_line,
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169 offsetof(ngx_http_upstream_headers_in_t, etag),
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170 ngx_http_upstream_copy_header_line,
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171 offsetof(ngx_http_headers_out_t, etag), 0 },
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172
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58
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173 { ngx_string("Server"),
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174 ngx_http_upstream_process_header_line,
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175 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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176 ngx_http_upstream_copy_header_line,
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177 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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178
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78
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179 { ngx_string("WWW-Authenticate"),
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180 ngx_http_upstream_process_header_line,
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181 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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182 ngx_http_upstream_copy_header_line, 0, 0 },
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183
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58
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184 { ngx_string("Location"),
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392
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185 ngx_http_upstream_process_header_line,
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186 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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187 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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188
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189 { ngx_string("Refresh"),
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190 ngx_http_upstream_ignore_header_line, 0,
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64
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191 ngx_http_upstream_rewrite_refresh, 0, 0 },
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192
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193 { ngx_string("Set-Cookie"),
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627
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194 ngx_http_upstream_process_set_cookie, 0,
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80
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195 ngx_http_upstream_copy_header_line, 0, 1 },
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196
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197 { ngx_string("Content-Disposition"),
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198 ngx_http_upstream_ignore_header_line, 0,
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199 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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200
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201 { ngx_string("Cache-Control"),
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512
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202 ngx_http_upstream_process_cache_control, 0,
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58
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203 ngx_http_upstream_copy_multi_header_lines,
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64
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204 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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205
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122
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206 { ngx_string("Expires"),
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512
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207 ngx_http_upstream_process_expires, 0,
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122
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208 ngx_http_upstream_copy_header_line,
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209 offsetof(ngx_http_headers_out_t, expires), 1 },
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210
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126
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211 { ngx_string("Accept-Ranges"),
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212 ngx_http_upstream_process_header_line,
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213 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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503
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214 ngx_http_upstream_copy_allow_ranges,
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126
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215 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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216
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58
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217 { ngx_string("Connection"),
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218 ngx_http_upstream_ignore_header_line, 0,
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64
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219 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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220
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190
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221 { ngx_string("Keep-Alive"),
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222 ngx_http_upstream_ignore_header_line, 0,
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223 ngx_http_upstream_ignore_header_line, 0, 0 },
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224
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58
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225 { ngx_string("X-Powered-By"),
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226 ngx_http_upstream_ignore_header_line, 0,
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198
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227 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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228
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229 { ngx_string("X-Accel-Expires"),
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512
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230 ngx_http_upstream_process_accel_expires, 0,
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198
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231 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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232
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233 { ngx_string("X-Accel-Redirect"),
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234 ngx_http_upstream_process_header_line,
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235 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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550
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236 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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237
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76
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238 { ngx_string("X-Accel-Limit-Rate"),
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239 ngx_http_upstream_process_limit_rate, 0,
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550
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240 ngx_http_upstream_copy_header_line, 0, 0 },
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76
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241
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198
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242 { ngx_string("X-Accel-Buffering"),
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243 ngx_http_upstream_process_buffering, 0,
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550
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244 ngx_http_upstream_copy_header_line, 0, 0 },
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198
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245
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206
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246 { ngx_string("X-Accel-Charset"),
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247 ngx_http_upstream_process_charset, 0,
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550
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248 ngx_http_upstream_copy_header_line, 0, 0 },
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206
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249
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58
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250 #if (NGX_HTTP_GZIP)
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251 { ngx_string("Content-Encoding"),
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252 ngx_http_upstream_process_header_line,
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253 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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254 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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255 #endif
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256
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64
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257 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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258 };
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28
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259
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260
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200
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261 static ngx_command_t ngx_http_upstream_commands[] = {
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262
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263 { ngx_string("upstream"),
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264 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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265 ngx_http_upstream,
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266 0,
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267 0,
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268 NULL },
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269
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270 { ngx_string("server"),
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260
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271 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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272 ngx_http_upstream_server,
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273 NGX_HTTP_SRV_CONF_OFFSET,
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274 0,
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275 NULL },
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276
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277 ngx_null_command
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278 };
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279
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280
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281 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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282 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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283 NULL, /* postconfiguration */
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284
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285 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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286 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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287
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288 NULL, /* create server configuration */
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289 NULL, /* merge server configuration */
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290
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291 NULL, /* create location configuration */
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292 NULL /* merge location configuration */
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293 };
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126
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294
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28
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295
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296 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
297 NGX_MODULE_V1,
|
|
28
|
298 &ngx_http_upstream_module_ctx, /* module context */
|
|
200
|
299 ngx_http_upstream_commands, /* module directives */
|
|
28
|
300 NGX_HTTP_MODULE, /* module type */
|
|
90
|
301 NULL, /* init master */
|
|
28
|
302 NULL, /* init module */
|
|
90
|
303 NULL, /* init process */
|
|
|
304 NULL, /* init thread */
|
|
|
305 NULL, /* exit thread */
|
|
|
306 NULL, /* exit process */
|
|
|
307 NULL, /* exit master */
|
|
|
308 NGX_MODULE_V1_PADDING
|
|
28
|
309 };
|
|
|
310
|
|
|
311
|
|
122
|
312 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
313
|
|
298
|
314 { ngx_string("upstream_addr"), NULL,
|
|
455
|
315 ngx_http_upstream_addr_variable, 0,
|
|
|
316 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
298
|
317
|
|
186
|
318 { ngx_string("upstream_status"), NULL,
|
|
455
|
319 ngx_http_upstream_status_variable, 0,
|
|
|
320 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
321
|
|
186
|
322 { ngx_string("upstream_response_time"), NULL,
|
|
455
|
323 ngx_http_upstream_response_time_variable, 0,
|
|
|
324 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
325
|
|
459
|
326 { ngx_string("upstream_response_length"), NULL,
|
|
|
327 ngx_http_upstream_response_length_variable, 0,
|
|
|
328 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
329
|
|
544
|
330 #if (NGX_HTTP_CACHE)
|
|
|
331
|
|
542
|
332 { ngx_string("upstream_cache_status"), NULL,
|
|
|
333 ngx_http_upstream_cache_status, 0,
|
|
|
334 NGX_HTTP_VAR_NOHASH|NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
|
335
|
|
544
|
336 #endif
|
|
|
337
|
|
186
|
338 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
339 };
|
|
|
340
|
|
|
341
|
|
440
|
342 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
343 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
344 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
345 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
346 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
347 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
348 { 0, 0 }
|
|
|
349 };
|
|
|
350
|
|
534
|
351
|
|
|
352 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
|
353 { ngx_string("GET"), NGX_HTTP_GET},
|
|
|
354 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
|
355 { ngx_string("POST"), NGX_HTTP_POST },
|
|
|
356 { ngx_null_string, 0 }
|
|
|
357 };
|
|
|
358
|
|
|
359
|
|
627
|
360 ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[] = {
|
|
|
361 { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT },
|
|
|
362 { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES },
|
|
|
363 { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES },
|
|
|
364 { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL },
|
|
|
365 { ngx_string("Set-Cookie"), NGX_HTTP_UPSTREAM_IGN_SET_COOKIE },
|
|
|
366 { ngx_null_string, 0 }
|
|
|
367 };
|
|
|
368
|
|
|
369
|
|
550
|
370 ngx_int_t
|
|
|
371 ngx_http_upstream_create(ngx_http_request_t *r)
|
|
|
372 {
|
|
|
373 ngx_http_upstream_t *u;
|
|
|
374
|
|
|
375 u = r->upstream;
|
|
|
376
|
|
|
377 if (u && u->cleanup) {
|
|
566
|
378 r->main->count++;
|
|
550
|
379 ngx_http_upstream_cleanup(r);
|
|
|
380 }
|
|
|
381
|
|
|
382 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
|
383 if (u == NULL) {
|
|
|
384 return NGX_ERROR;
|
|
|
385 }
|
|
|
386
|
|
|
387 r->upstream = u;
|
|
|
388
|
|
|
389 u->peer.log = r->connection->log;
|
|
|
390 u->peer.log_error = NGX_ERROR_ERR;
|
|
|
391 #if (NGX_THREADS)
|
|
|
392 u->peer.lock = &r->connection->lock;
|
|
|
393 #endif
|
|
|
394
|
|
558
|
395 #if (NGX_HTTP_CACHE)
|
|
|
396 r->cache = NULL;
|
|
|
397 #endif
|
|
|
398
|
|
550
|
399 return NGX_OK;
|
|
|
400 }
|
|
|
401
|
|
|
402
|
|
36
|
403 void
|
|
|
404 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
405 {
|
|
558
|
406 ngx_connection_t *c;
|
|
28
|
407
|
|
|
408 c = r->connection;
|
|
|
409
|
|
|
410 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
411 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
412
|
|
|
413 if (c->read->timer_set) {
|
|
|
414 ngx_del_timer(c->read);
|
|
|
415 }
|
|
|
416
|
|
|
417 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
418
|
|
|
419 if (!c->write->active) {
|
|
80
|
420 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
421 == NGX_ERROR)
|
|
28
|
422 {
|
|
|
423 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
424 return;
|
|
|
425 }
|
|
|
426 }
|
|
|
427 }
|
|
|
428
|
|
558
|
429 ngx_http_upstream_init_request(r);
|
|
|
430 }
|
|
|
431
|
|
|
432
|
|
|
433 static void
|
|
|
434 ngx_http_upstream_init_request(ngx_http_request_t *r)
|
|
|
435 {
|
|
|
436 ngx_str_t *host;
|
|
|
437 ngx_uint_t i;
|
|
|
438 ngx_resolver_ctx_t *ctx, temp;
|
|
|
439 ngx_http_cleanup_t *cln;
|
|
|
440 ngx_http_upstream_t *u;
|
|
|
441 ngx_http_core_loc_conf_t *clcf;
|
|
|
442 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
443 ngx_http_upstream_main_conf_t *umcf;
|
|
|
444
|
|
|
445 if (r->aio) {
|
|
|
446 return;
|
|
86
|
447 }
|
|
58
|
448
|
|
558
|
449 u = r->upstream;
|
|
|
450
|
|
503
|
451 #if (NGX_HTTP_CACHE)
|
|
|
452
|
|
|
453 if (u->conf->cache) {
|
|
|
454 ngx_int_t rc;
|
|
|
455
|
|
|
456 rc = ngx_http_upstream_cache(r, u);
|
|
|
457
|
|
558
|
458 if (rc == NGX_BUSY) {
|
|
|
459 r->write_event_handler = ngx_http_upstream_init_request;
|
|
|
460 return;
|
|
|
461 }
|
|
|
462
|
|
|
463 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
464
|
|
503
|
465 if (rc == NGX_DONE) {
|
|
|
466 return;
|
|
|
467 }
|
|
|
468
|
|
|
469 if (rc != NGX_DECLINED) {
|
|
|
470 ngx_http_finalize_request(r, rc);
|
|
|
471 return;
|
|
|
472 }
|
|
|
473 }
|
|
|
474
|
|
|
475 #endif
|
|
|
476
|
|
558
|
477 u->store = (u->conf->store || u->conf->store_lengths);
|
|
|
478
|
|
|
479 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
|
480 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
481 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
482 }
|
|
|
483
|
|
|
484 if (r->request_body) {
|
|
|
485 u->request_bufs = r->request_body->bufs;
|
|
|
486 }
|
|
|
487
|
|
86
|
488 if (u->create_request(r) != NGX_OK) {
|
|
28
|
489 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
490 return;
|
|
|
491 }
|
|
|
492
|
|
583
|
493 u->peer.local = u->conf->local;
|
|
|
494
|
|
58
|
495 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
496
|
|
558
|
497 u->output.alignment = clcf->directio_alignment;
|
|
28
|
498 u->output.pool = r->pool;
|
|
|
499 u->output.bufs.num = 1;
|
|
58
|
500 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
501 u->output.output_filter = ngx_chain_writer;
|
|
|
502 u->output.filter_ctx = &u->writer;
|
|
|
503
|
|
|
504 u->writer.pool = r->pool;
|
|
|
505
|
|
296
|
506 if (r->upstream_states == NULL) {
|
|
|
507
|
|
|
508 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
509 sizeof(ngx_http_upstream_state_t));
|
|
|
510 if (r->upstream_states == NULL) {
|
|
|
511 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
512 return;
|
|
|
513 }
|
|
|
514
|
|
|
515 } else {
|
|
|
516
|
|
|
517 u->state = ngx_array_push(r->upstream_states);
|
|
|
518 if (u->state == NULL) {
|
|
|
519 ngx_http_upstream_finalize_request(r, u,
|
|
|
520 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
521 return;
|
|
|
522 }
|
|
|
523
|
|
|
524 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
525 }
|
|
|
526
|
|
142
|
527 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
528 if (cln == NULL) {
|
|
|
529 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
530 return;
|
|
|
531 }
|
|
|
532
|
|
|
533 cln->handler = ngx_http_upstream_cleanup;
|
|
|
534 cln->data = r;
|
|
|
535 u->cleanup = &cln->handler;
|
|
|
536
|
|
348
|
537 if (u->resolved == NULL) {
|
|
|
538
|
|
|
539 uscf = u->conf->upstream;
|
|
|
540
|
|
|
541 } else {
|
|
|
542
|
|
463
|
543 if (u->resolved->sockaddr) {
|
|
|
544
|
|
|
545 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
546 != NGX_OK)
|
|
|
547 {
|
|
573
|
548 ngx_http_upstream_finalize_request(r, u,
|
|
|
549 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
463
|
550 return;
|
|
|
551 }
|
|
|
552
|
|
|
553 ngx_http_upstream_connect(r, u);
|
|
|
554
|
|
|
555 return;
|
|
|
556 }
|
|
|
557
|
|
356
|
558 host = &u->resolved->host;
|
|
348
|
559
|
|
|
560 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
561
|
|
|
562 uscfp = umcf->upstreams.elts;
|
|
|
563
|
|
|
564 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
565
|
|
|
566 uscf = uscfp[i];
|
|
|
567
|
|
|
568 if (uscf->host.len == host->len
|
|
445
|
569 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
570 || uscf->port == u->resolved->port)
|
|
348
|
571 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
572 {
|
|
|
573 goto found;
|
|
|
574 }
|
|
|
575 }
|
|
|
576
|
|
|
577 temp.name = *host;
|
|
|
578
|
|
|
579 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
580 if (ctx == NULL) {
|
|
573
|
581 ngx_http_upstream_finalize_request(r, u,
|
|
|
582 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
583 return;
|
|
|
584 }
|
|
|
585
|
|
354
|
586 if (ctx == NGX_NO_RESOLVER) {
|
|
558
|
587 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
354
|
588 "no resolver defined to resolve %V", host);
|
|
|
589
|
|
573
|
590 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
354
|
591 return;
|
|
|
592 }
|
|
|
593
|
|
348
|
594 ctx->name = *host;
|
|
|
595 ctx->type = NGX_RESOLVE_A;
|
|
|
596 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
597 ctx->data = r;
|
|
|
598 ctx->timeout = clcf->resolver_timeout;
|
|
|
599
|
|
372
|
600 u->resolved->ctx = ctx;
|
|
|
601
|
|
348
|
602 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
603 u->resolved->ctx = NULL;
|
|
573
|
604 ngx_http_upstream_finalize_request(r, u,
|
|
|
605 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
606 return;
|
|
|
607 }
|
|
|
608
|
|
|
609 return;
|
|
|
610 }
|
|
|
611
|
|
|
612 found:
|
|
|
613
|
|
|
614 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
573
|
615 ngx_http_upstream_finalize_request(r, u,
|
|
|
616 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
617 return;
|
|
|
618 }
|
|
|
619
|
|
28
|
620 ngx_http_upstream_connect(r, u);
|
|
|
621 }
|
|
|
622
|
|
|
623
|
|
503
|
624 #if (NGX_HTTP_CACHE)
|
|
|
625
|
|
|
626 static ngx_int_t
|
|
|
627 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
628 {
|
|
|
629 ngx_int_t rc;
|
|
|
630 ngx_http_cache_t *c;
|
|
|
631
|
|
558
|
632 c = r->cache;
|
|
|
633
|
|
503
|
634 if (c == NULL) {
|
|
558
|
635
|
|
631
|
636 switch (ngx_http_test_predicates(r, u->conf->cache_bypass)) {
|
|
|
637
|
|
|
638 case NGX_ERROR:
|
|
|
639 return NGX_ERROR;
|
|
|
640
|
|
|
641 case NGX_DECLINED:
|
|
|
642 u->cache_status = NGX_HTTP_CACHE_BYPASS;
|
|
|
643 return NGX_DECLINED;
|
|
|
644
|
|
|
645 default: /* NGX_OK */
|
|
|
646 break;
|
|
615
|
647 }
|
|
|
648
|
|
558
|
649 if (!(r->method & u->conf->cache_methods)) {
|
|
|
650 return NGX_DECLINED;
|
|
|
651 }
|
|
|
652
|
|
|
653 if (r->method & NGX_HTTP_HEAD) {
|
|
|
654 u->method = ngx_http_core_get_method;
|
|
|
655 }
|
|
|
656
|
|
631
|
657 if (ngx_http_file_cache_new(r) != NGX_OK) {
|
|
558
|
658 return NGX_ERROR;
|
|
|
659 }
|
|
|
660
|
|
|
661 if (u->create_key(r) != NGX_OK) {
|
|
|
662 return NGX_ERROR;
|
|
|
663 }
|
|
|
664
|
|
|
665 /* TODO: add keys */
|
|
|
666
|
|
|
667 ngx_http_file_cache_create_key(r);
|
|
|
668
|
|
|
669 u->cacheable = 1;
|
|
|
670
|
|
631
|
671 c = r->cache;
|
|
|
672
|
|
558
|
673 c->min_uses = u->conf->cache_min_uses;
|
|
|
674 c->body_start = u->conf->buffer_size;
|
|
|
675 c->file_cache = u->conf->cache->data;
|
|
|
676
|
|
|
677 u->cache_status = NGX_HTTP_CACHE_MISS;
|
|
503
|
678 }
|
|
|
679
|
|
|
680 rc = ngx_http_file_cache_open(r);
|
|
|
681
|
|
538
|
682 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
683 "http upstream cache: %i", rc);
|
|
|
684
|
|
542
|
685 switch (rc) {
|
|
|
686
|
|
|
687 case NGX_HTTP_CACHE_UPDATING:
|
|
|
688
|
|
538
|
689 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
|
542
|
690 u->cache_status = rc;
|
|
538
|
691 rc = NGX_OK;
|
|
|
692
|
|
|
693 } else {
|
|
|
694 rc = NGX_HTTP_CACHE_STALE;
|
|
|
695 }
|
|
542
|
696
|
|
|
697 break;
|
|
|
698
|
|
|
699 case NGX_OK:
|
|
|
700 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
538
|
701 }
|
|
503
|
702
|
|
542
|
703 switch (rc) {
|
|
|
704
|
|
|
705 case NGX_OK:
|
|
503
|
706
|
|
|
707 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
708
|
|
|
709 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
710 return rc;
|
|
|
711 }
|
|
|
712
|
|
542
|
713 break;
|
|
|
714
|
|
|
715 case NGX_HTTP_CACHE_STALE:
|
|
503
|
716
|
|
512
|
717 c->valid_sec = 0;
|
|
503
|
718 u->buffer.start = NULL;
|
|
542
|
719 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
|
720
|
|
|
721 break;
|
|
|
722
|
|
|
723 case NGX_DECLINED:
|
|
503
|
724
|
|
|
725 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
|
726 u->buffer.start = NULL;
|
|
|
727
|
|
|
728 } else {
|
|
|
729 u->buffer.pos = u->buffer.start + c->header_start;
|
|
|
730 u->buffer.last = u->buffer.pos;
|
|
|
731 }
|
|
|
732
|
|
542
|
733 break;
|
|
|
734
|
|
558
|
735 case NGX_HTTP_CACHE_SCARCE:
|
|
503
|
736
|
|
|
737 u->cacheable = 0;
|
|
|
738
|
|
542
|
739 break;
|
|
|
740
|
|
558
|
741 case NGX_AGAIN:
|
|
|
742
|
|
|
743 return NGX_BUSY;
|
|
|
744
|
|
|
745 case NGX_ERROR:
|
|
|
746
|
|
|
747 return NGX_ERROR;
|
|
|
748
|
|
542
|
749 default:
|
|
503
|
750
|
|
|
751 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
|
752
|
|
542
|
753 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
|
754
|
|
503
|
755 return rc;
|
|
|
756 }
|
|
|
757
|
|
|
758 r->cached = 0;
|
|
|
759
|
|
|
760 return NGX_DECLINED;
|
|
|
761 }
|
|
|
762
|
|
|
763
|
|
|
764 static ngx_int_t
|
|
|
765 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
766 {
|
|
|
767 ngx_int_t rc;
|
|
|
768 ngx_http_cache_t *c;
|
|
|
769
|
|
542
|
770 r->cached = 1;
|
|
503
|
771 c = r->cache;
|
|
|
772
|
|
597
|
773 if (c->header_start == c->body_start) {
|
|
|
774 r->http_version = NGX_HTTP_VERSION_9;
|
|
|
775 return ngx_http_cache_send(r);
|
|
|
776 }
|
|
|
777
|
|
503
|
778 /* TODO: cache stack */
|
|
|
779
|
|
|
780 u->buffer = *c->buf;
|
|
|
781 u->buffer.pos += c->header_start;
|
|
|
782
|
|
|
783 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
784
|
|
|
785 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
|
786 sizeof(ngx_table_elt_t))
|
|
|
787 != NGX_OK)
|
|
|
788 {
|
|
|
789 return NGX_ERROR;
|
|
|
790 }
|
|
|
791
|
|
|
792 rc = u->process_header(r);
|
|
|
793
|
|
|
794 if (rc == NGX_OK) {
|
|
|
795
|
|
|
796 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
|
797 return NGX_DONE;
|
|
|
798 }
|
|
|
799
|
|
|
800 return ngx_http_cache_send(r);
|
|
|
801 }
|
|
|
802
|
|
|
803 if (rc == NGX_ERROR) {
|
|
|
804 return NGX_ERROR;
|
|
|
805 }
|
|
|
806
|
|
|
807 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
|
808
|
|
|
809 /* TODO: delete file */
|
|
|
810
|
|
|
811 return rc;
|
|
|
812 }
|
|
|
813
|
|
|
814 #endif
|
|
|
815
|
|
|
816
|
|
36
|
817 static void
|
|
348
|
818 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
819 {
|
|
|
820 ngx_http_request_t *r;
|
|
573
|
821 ngx_http_upstream_t *u;
|
|
348
|
822 ngx_http_upstream_resolved_t *ur;
|
|
|
823
|
|
|
824 r = ctx->data;
|
|
|
825
|
|
573
|
826 u = r->upstream;
|
|
|
827 ur = u->resolved;
|
|
348
|
828
|
|
|
829 if (ctx->state) {
|
|
|
830 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
831 "%V could not be resolved (%i: %s)",
|
|
|
832 &ctx->name, ctx->state,
|
|
|
833 ngx_resolver_strerror(ctx->state));
|
|
|
834
|
|
573
|
835 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
348
|
836 return;
|
|
|
837 }
|
|
|
838
|
|
|
839 ur->naddrs = ctx->naddrs;
|
|
|
840 ur->addrs = ctx->addrs;
|
|
|
841
|
|
|
842 #if (NGX_DEBUG)
|
|
|
843 {
|
|
|
844 in_addr_t addr;
|
|
|
845 ngx_uint_t i;
|
|
|
846
|
|
|
847 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
848 addr = ntohl(ur->addrs[i]);
|
|
|
849
|
|
|
850 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
851 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
852 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
853 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
854 }
|
|
|
855 }
|
|
|
856 #endif
|
|
|
857
|
|
|
858 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
573
|
859 ngx_http_upstream_finalize_request(r, u,
|
|
|
860 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
861 return;
|
|
|
862 }
|
|
|
863
|
|
|
864 ngx_resolve_name_done(ctx);
|
|
573
|
865 ur->ctx = NULL;
|
|
|
866
|
|
|
867 ngx_http_upstream_connect(r, u);
|
|
348
|
868 }
|
|
|
869
|
|
|
870
|
|
|
871 static void
|
|
455
|
872 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
873 {
|
|
|
874 ngx_connection_t *c;
|
|
|
875 ngx_http_request_t *r;
|
|
|
876 ngx_http_log_ctx_t *ctx;
|
|
|
877 ngx_http_upstream_t *u;
|
|
|
878
|
|
|
879 c = ev->data;
|
|
|
880 r = c->data;
|
|
|
881
|
|
|
882 u = r->upstream;
|
|
|
883 c = r->connection;
|
|
|
884
|
|
|
885 ctx = c->log->data;
|
|
|
886 ctx->current_request = r;
|
|
|
887
|
|
|
888 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
889 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
890
|
|
|
891 if (ev->write) {
|
|
459
|
892 u->write_event_handler(r, u);
|
|
455
|
893
|
|
|
894 } else {
|
|
459
|
895 u->read_event_handler(r, u);
|
|
455
|
896 }
|
|
|
897
|
|
|
898 ngx_http_run_posted_requests(c);
|
|
|
899 }
|
|
|
900
|
|
|
901
|
|
|
902 static void
|
|
58
|
903 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
904 {
|
|
|
905 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
906 }
|
|
|
907
|
|
|
908
|
|
|
909 static void
|
|
|
910 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
911 {
|
|
|
912 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
913 }
|
|
|
914
|
|
|
915
|
|
|
916 static void
|
|
|
917 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
918 ngx_event_t *ev)
|
|
28
|
919 {
|
|
|
920 int n;
|
|
|
921 char buf[1];
|
|
126
|
922 ngx_err_t err;
|
|
526
|
923 ngx_int_t event;
|
|
28
|
924 ngx_connection_t *c;
|
|
|
925 ngx_http_upstream_t *u;
|
|
|
926
|
|
76
|
927 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
928 "http upstream check client, write event:%d, \"%V\"",
|
|
|
929 ev->write, &r->uri);
|
|
28
|
930
|
|
58
|
931 c = r->connection;
|
|
32
|
932 u = r->upstream;
|
|
|
933
|
|
132
|
934 if (c->error) {
|
|
526
|
935 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
936
|
|
|
937 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
938
|
|
|
939 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
|
940 ngx_http_upstream_finalize_request(r, u,
|
|
|
941 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
942 return;
|
|
|
943 }
|
|
|
944 }
|
|
|
945
|
|
522
|
946 if (!u->cacheable) {
|
|
|
947 ngx_http_upstream_finalize_request(r, u,
|
|
|
948 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
949 }
|
|
526
|
950
|
|
76
|
951 return;
|
|
|
952 }
|
|
|
953
|
|
28
|
954 #if (NGX_HAVE_KQUEUE)
|
|
|
955
|
|
|
956 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
957
|
|
|
958 if (!ev->pending_eof) {
|
|
|
959 return;
|
|
|
960 }
|
|
|
961
|
|
|
962 ev->eof = 1;
|
|
132
|
963 c->error = 1;
|
|
28
|
964
|
|
|
965 if (ev->kq_errno) {
|
|
|
966 ev->error = 1;
|
|
|
967 }
|
|
|
968
|
|
522
|
969 if (!u->cacheable && u->peer.connection) {
|
|
28
|
970 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
76
|
971 "kevent() reported that client closed prematurely "
|
|
|
972 "connection, so upstream connection is closed too");
|
|
28
|
973 ngx_http_upstream_finalize_request(r, u,
|
|
|
974 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
975 return;
|
|
|
976 }
|
|
|
977
|
|
|
978 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
|
979 "kevent() reported that client closed "
|
|
|
980 "prematurely connection");
|
|
|
981
|
|
|
982 if (u->peer.connection == NULL) {
|
|
|
983 ngx_http_upstream_finalize_request(r, u,
|
|
|
984 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
985 }
|
|
|
986
|
|
|
987 return;
|
|
|
988 }
|
|
|
989
|
|
|
990 #endif
|
|
|
991
|
|
|
992 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
993
|
|
|
994 err = ngx_socket_errno;
|
|
|
995
|
|
286
|
996 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
997 "http upstream recv(): %d", n);
|
|
|
998
|
|
28
|
999 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
1000 return;
|
|
|
1001 }
|
|
|
1002
|
|
|
1003 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
526
|
1004
|
|
|
1005 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
1006
|
|
|
1007 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
28
|
1008 ngx_http_upstream_finalize_request(r, u,
|
|
|
1009 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1010 return;
|
|
|
1011 }
|
|
|
1012 }
|
|
|
1013
|
|
|
1014 if (n > 0) {
|
|
|
1015 return;
|
|
|
1016 }
|
|
|
1017
|
|
|
1018 if (n == -1) {
|
|
|
1019 if (err == NGX_EAGAIN) {
|
|
|
1020 return;
|
|
|
1021 }
|
|
|
1022
|
|
|
1023 ev->error = 1;
|
|
|
1024
|
|
32
|
1025 } else { /* n == 0 */
|
|
28
|
1026 err = 0;
|
|
|
1027 }
|
|
|
1028
|
|
78
|
1029 ev->eof = 1;
|
|
132
|
1030 c->error = 1;
|
|
78
|
1031
|
|
522
|
1032 if (!u->cacheable && u->peer.connection) {
|
|
28
|
1033 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
1034 "client closed prematurely connection, "
|
|
|
1035 "so upstream connection is closed too");
|
|
|
1036 ngx_http_upstream_finalize_request(r, u,
|
|
|
1037 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1038 return;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
|
1042 "client closed prematurely connection");
|
|
|
1043
|
|
|
1044 if (u->peer.connection == NULL) {
|
|
|
1045 ngx_http_upstream_finalize_request(r, u,
|
|
|
1046 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1047 }
|
|
|
1048 }
|
|
|
1049
|
|
|
1050
|
|
36
|
1051 static void
|
|
|
1052 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1053 {
|
|
140
|
1054 ngx_int_t rc;
|
|
214
|
1055 ngx_time_t *tp;
|
|
140
|
1056 ngx_connection_t *c;
|
|
28
|
1057
|
|
32
|
1058 r->connection->log->action = "connecting to upstream";
|
|
28
|
1059
|
|
|
1060 r->connection->single_connection = 0;
|
|
|
1061
|
|
262
|
1062 if (u->state && u->state->response_sec) {
|
|
214
|
1063 tp = ngx_timeofday();
|
|
262
|
1064 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
1065 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
1066 }
|
|
|
1067
|
|
296
|
1068 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
1069 if (u->state == NULL) {
|
|
|
1070 ngx_http_upstream_finalize_request(r, u,
|
|
|
1071 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1072 return;
|
|
|
1073 }
|
|
|
1074
|
|
|
1075 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
1076
|
|
|
1077 tp = ngx_timeofday();
|
|
262
|
1078 u->state->response_sec = tp->sec;
|
|
|
1079 u->state->response_msec = tp->msec;
|
|
214
|
1080
|
|
28
|
1081 rc = ngx_event_connect_peer(&u->peer);
|
|
|
1082
|
|
|
1083 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1084 "http upstream connect: %i", rc);
|
|
|
1085
|
|
|
1086 if (rc == NGX_ERROR) {
|
|
|
1087 ngx_http_upstream_finalize_request(r, u,
|
|
|
1088 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1089 return;
|
|
|
1090 }
|
|
|
1091
|
|
356
|
1092 u->state->peer = u->peer.name;
|
|
|
1093
|
|
92
|
1094 if (rc == NGX_BUSY) {
|
|
|
1095 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
1096 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
1097 return;
|
|
92
|
1098 }
|
|
|
1099
|
|
326
|
1100 if (rc == NGX_DECLINED) {
|
|
28
|
1101 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1102 return;
|
|
|
1103 }
|
|
|
1104
|
|
126
|
1105 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
1106
|
|
28
|
1107 c = u->peer.connection;
|
|
|
1108
|
|
|
1109 c->data = r;
|
|
140
|
1110
|
|
455
|
1111 c->write->handler = ngx_http_upstream_handler;
|
|
|
1112 c->read->handler = ngx_http_upstream_handler;
|
|
|
1113
|
|
|
1114 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
1115 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
1116
|
|
326
|
1117 c->sendfile &= r->connection->sendfile;
|
|
372
|
1118 u->output.sendfile = c->sendfile;
|
|
28
|
1119
|
|
|
1120 c->pool = r->pool;
|
|
532
|
1121 c->log = r->connection->log;
|
|
|
1122 c->read->log = c->log;
|
|
|
1123 c->write->log = c->log;
|
|
28
|
1124
|
|
|
1125 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
1126
|
|
|
1127 u->writer.out = NULL;
|
|
|
1128 u->writer.last = &u->writer.out;
|
|
|
1129 u->writer.connection = c;
|
|
|
1130 u->writer.limit = 0;
|
|
|
1131
|
|
|
1132 if (u->request_sent) {
|
|
58
|
1133 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
1134 ngx_http_upstream_finalize_request(r, u,
|
|
|
1135 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1136 return;
|
|
|
1137 }
|
|
28
|
1138 }
|
|
|
1139
|
|
276
|
1140 if (r->request_body
|
|
|
1141 && r->request_body->buf
|
|
|
1142 && r->request_body->temp_file
|
|
|
1143 && r == r->main)
|
|
|
1144 {
|
|
122
|
1145 /*
|
|
|
1146 * the r->request_body->buf can be reused for one request only,
|
|
|
1147 * the subrequests should allocate their own temporay bufs
|
|
|
1148 */
|
|
|
1149
|
|
|
1150 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1151 if (u->output.free == NULL) {
|
|
|
1152 ngx_http_upstream_finalize_request(r, u,
|
|
|
1153 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1154 return;
|
|
28
|
1155 }
|
|
122
|
1156
|
|
|
1157 u->output.free->buf = r->request_body->buf;
|
|
|
1158 u->output.free->next = NULL;
|
|
|
1159 u->output.allocated = 1;
|
|
|
1160
|
|
|
1161 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
1162 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
1163 r->request_body->buf->tag = u->output.tag;
|
|
28
|
1164 }
|
|
|
1165
|
|
|
1166 u->request_sent = 0;
|
|
|
1167
|
|
|
1168 if (rc == NGX_AGAIN) {
|
|
|
1169 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
1170 return;
|
|
|
1171 }
|
|
|
1172
|
|
126
|
1173 #if (NGX_HTTP_SSL)
|
|
|
1174
|
|
348
|
1175 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1176 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
1177 return;
|
|
|
1178 }
|
|
|
1179
|
|
|
1180 #endif
|
|
|
1181
|
|
28
|
1182 ngx_http_upstream_send_request(r, u);
|
|
|
1183 }
|
|
|
1184
|
|
|
1185
|
|
126
|
1186 #if (NGX_HTTP_SSL)
|
|
|
1187
|
|
|
1188 static void
|
|
140
|
1189 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
1190 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
1191 {
|
|
260
|
1192 ngx_int_t rc;
|
|
140
|
1193
|
|
|
1194 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
1195 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
493
|
1196 != NGX_OK)
|
|
140
|
1197 {
|
|
|
1198 ngx_http_upstream_finalize_request(r, u,
|
|
|
1199 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1200 return;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 c->sendfile = 0;
|
|
168
|
1204 u->output.sendfile = 0;
|
|
140
|
1205
|
|
418
|
1206 if (u->conf->ssl_session_reuse) {
|
|
|
1207 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
1208 ngx_http_upstream_finalize_request(r, u,
|
|
|
1209 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1210 return;
|
|
|
1211 }
|
|
140
|
1212 }
|
|
|
1213
|
|
190
|
1214 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
1215
|
|
140
|
1216 rc = ngx_ssl_handshake(c);
|
|
|
1217
|
|
|
1218 if (rc == NGX_AGAIN) {
|
|
|
1219 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
1220 return;
|
|
|
1221 }
|
|
|
1222
|
|
|
1223 ngx_http_upstream_ssl_handshake(c);
|
|
|
1224 }
|
|
|
1225
|
|
|
1226
|
|
|
1227 static void
|
|
126
|
1228 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
1229 {
|
|
|
1230 ngx_http_request_t *r;
|
|
|
1231 ngx_http_upstream_t *u;
|
|
|
1232
|
|
|
1233 r = c->data;
|
|
|
1234 u = r->upstream;
|
|
|
1235
|
|
|
1236 if (c->ssl->handshaked) {
|
|
|
1237
|
|
418
|
1238 if (u->conf->ssl_session_reuse) {
|
|
|
1239 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
1240 }
|
|
260
|
1241
|
|
455
|
1242 c->write->handler = ngx_http_upstream_handler;
|
|
|
1243 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
1244
|
|
|
1245 ngx_http_upstream_send_request(r, u);
|
|
|
1246
|
|
|
1247 return;
|
|
|
1248 }
|
|
|
1249
|
|
|
1250 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1251
|
|
|
1252 }
|
|
|
1253
|
|
|
1254 #endif
|
|
|
1255
|
|
|
1256
|
|
58
|
1257 static ngx_int_t
|
|
36
|
1258 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1259 {
|
|
|
1260 ngx_chain_t *cl;
|
|
|
1261
|
|
58
|
1262 if (u->reinit_request(r) != NGX_OK) {
|
|
|
1263 return NGX_ERROR;
|
|
|
1264 }
|
|
|
1265
|
|
356
|
1266 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
1267
|
|
|
1268 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
1269 sizeof(ngx_table_elt_t))
|
|
|
1270 != NGX_OK)
|
|
58
|
1271 {
|
|
|
1272 return NGX_ERROR;
|
|
28
|
1273 }
|
|
|
1274
|
|
|
1275 /* reinit the request chain */
|
|
126
|
1276
|
|
58
|
1277 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
1278 cl->buf->pos = cl->buf->start;
|
|
|
1279 cl->buf->file_pos = 0;
|
|
|
1280 }
|
|
|
1281
|
|
58
|
1282 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
1283
|
|
122
|
1284 if (r->request_body && r->request_body->temp_file
|
|
146
|
1285 && r != r->main && u->output.buf)
|
|
122
|
1286 {
|
|
|
1287 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1288 if (u->output.free == NULL) {
|
|
|
1289 return NGX_ERROR;
|
|
58
|
1290 }
|
|
122
|
1291
|
|
|
1292 u->output.free->buf = u->output.buf;
|
|
|
1293 u->output.free->next = NULL;
|
|
|
1294
|
|
|
1295 u->output.buf->pos = u->output.buf->start;
|
|
|
1296 u->output.buf->last = u->output.buf->start;
|
|
58
|
1297 }
|
|
28
|
1298
|
|
|
1299 u->output.buf = NULL;
|
|
|
1300 u->output.in = NULL;
|
|
|
1301 u->output.busy = NULL;
|
|
126
|
1302
|
|
130
|
1303 /* reinit u->buffer */
|
|
126
|
1304
|
|
503
|
1305 u->buffer.pos = u->buffer.start;
|
|
|
1306
|
|
|
1307 #if (NGX_HTTP_CACHE)
|
|
|
1308
|
|
|
1309 if (r->cache) {
|
|
|
1310 u->buffer.pos += r->cache->header_start;
|
|
28
|
1311 }
|
|
58
|
1312
|
|
28
|
1313 #endif
|
|
|
1314
|
|
503
|
1315 u->buffer.last = u->buffer.pos;
|
|
|
1316
|
|
58
|
1317 return NGX_OK;
|
|
28
|
1318 }
|
|
|
1319
|
|
|
1320
|
|
36
|
1321 static void
|
|
|
1322 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1323 {
|
|
294
|
1324 ngx_int_t rc;
|
|
32
|
1325 ngx_connection_t *c;
|
|
126
|
1326
|
|
28
|
1327 c = u->peer.connection;
|
|
|
1328
|
|
|
1329 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1330 "http upstream send request");
|
|
|
1331
|
|
294
|
1332 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1333 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1334 return;
|
|
28
|
1335 }
|
|
|
1336
|
|
32
|
1337 c->log->action = "sending request to upstream";
|
|
28
|
1338
|
|
58
|
1339 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1340
|
|
|
1341 u->request_sent = 1;
|
|
|
1342
|
|
|
1343 if (rc == NGX_ERROR) {
|
|
|
1344 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1345 return;
|
|
|
1346 }
|
|
|
1347
|
|
|
1348 if (c->write->timer_set) {
|
|
|
1349 ngx_del_timer(c->write);
|
|
|
1350 }
|
|
|
1351
|
|
|
1352 if (rc == NGX_AGAIN) {
|
|
|
1353 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1354
|
|
459
|
1355 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1356 ngx_http_upstream_finalize_request(r, u,
|
|
|
1357 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1358 return;
|
|
|
1359 }
|
|
|
1360
|
|
|
1361 return;
|
|
|
1362 }
|
|
|
1363
|
|
|
1364 /* rc == NGX_OK */
|
|
|
1365
|
|
|
1366 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1367 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1368 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1369 ngx_tcp_push_n " failed");
|
|
|
1370 ngx_http_upstream_finalize_request(r, u,
|
|
|
1371 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1372 return;
|
|
28
|
1373 }
|
|
|
1374
|
|
|
1375 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1376 }
|
|
126
|
1377
|
|
28
|
1378 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1379
|
|
|
1380 #if 1
|
|
|
1381 if (c->read->ready) {
|
|
126
|
1382
|
|
28
|
1383 /* post aio operation */
|
|
|
1384
|
|
|
1385 /*
|
|
|
1386 * TODO comment
|
|
|
1387 * although we can post aio operation just in the end
|
|
|
1388 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1389 * it's better to do here because we postpone header buffer allocation
|
|
|
1390 */
|
|
|
1391
|
|
459
|
1392 ngx_http_upstream_process_header(r, u);
|
|
28
|
1393 return;
|
|
|
1394 }
|
|
|
1395 #endif
|
|
|
1396
|
|
455
|
1397 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1398
|
|
459
|
1399 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1400 ngx_http_upstream_finalize_request(r, u,
|
|
|
1401 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1402 return;
|
|
|
1403 }
|
|
|
1404 }
|
|
|
1405
|
|
|
1406
|
|
36
|
1407 static void
|
|
459
|
1408 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1409 ngx_http_upstream_t *u)
|
|
28
|
1410 {
|
|
459
|
1411 ngx_connection_t *c;
|
|
|
1412
|
|
|
1413 c = u->peer.connection;
|
|
|
1414
|
|
|
1415 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1416 "http upstream send request handler");
|
|
|
1417
|
|
459
|
1418 if (c->write->timedout) {
|
|
28
|
1419 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1420 return;
|
|
|
1421 }
|
|
|
1422
|
|
140
|
1423 #if (NGX_HTTP_SSL)
|
|
|
1424
|
|
348
|
1425 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1426 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1427 return;
|
|
|
1428 }
|
|
|
1429
|
|
|
1430 #endif
|
|
|
1431
|
|
200
|
1432 if (u->header_sent) {
|
|
455
|
1433 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1434
|
|
459
|
1435 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1436
|
|
|
1437 return;
|
|
|
1438 }
|
|
|
1439
|
|
28
|
1440 ngx_http_upstream_send_request(r, u);
|
|
|
1441 }
|
|
|
1442
|
|
|
1443
|
|
36
|
1444 static void
|
|
459
|
1445 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1446 {
|
|
503
|
1447 ssize_t n;
|
|
|
1448 ngx_int_t rc;
|
|
|
1449 ngx_connection_t *c;
|
|
28
|
1450
|
|
459
|
1451 c = u->peer.connection;
|
|
|
1452
|
|
|
1453 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1454 "http upstream process header");
|
|
28
|
1455
|
|
32
|
1456 c->log->action = "reading response header from upstream";
|
|
28
|
1457
|
|
459
|
1458 if (c->read->timedout) {
|
|
28
|
1459 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1460 return;
|
|
|
1461 }
|
|
126
|
1462
|
|
294
|
1463 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1464 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1465 return;
|
|
|
1466 }
|
|
|
1467
|
|
130
|
1468 if (u->buffer.start == NULL) {
|
|
|
1469 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1470 if (u->buffer.start == NULL) {
|
|
28
|
1471 ngx_http_upstream_finalize_request(r, u,
|
|
|
1472 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1473 return;
|
|
|
1474 }
|
|
|
1475
|
|
130
|
1476 u->buffer.pos = u->buffer.start;
|
|
|
1477 u->buffer.last = u->buffer.start;
|
|
|
1478 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1479 u->buffer.temporary = 1;
|
|
|
1480
|
|
|
1481 u->buffer.tag = u->output.tag;
|
|
28
|
1482
|
|
356
|
1483 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1484 sizeof(ngx_table_elt_t))
|
|
|
1485 != NGX_OK)
|
|
58
|
1486 {
|
|
|
1487 ngx_http_upstream_finalize_request(r, u,
|
|
|
1488 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1489 return;
|
|
|
1490 }
|
|
|
1491
|
|
503
|
1492 #if (NGX_HTTP_CACHE)
|
|
|
1493
|
|
|
1494 if (r->cache) {
|
|
|
1495 u->buffer.pos += r->cache->header_start;
|
|
130
|
1496 u->buffer.last = u->buffer.pos;
|
|
28
|
1497 }
|
|
|
1498 #endif
|
|
|
1499 }
|
|
|
1500
|
|
453
|
1501 for ( ;; ) {
|
|
|
1502
|
|
|
1503 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1504
|
|
|
1505 if (n == NGX_AGAIN) {
|
|
28
|
1506 #if 0
|
|
453
|
1507 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1508 #endif
|
|
|
1509
|
|
459
|
1510 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
453
|
1511 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1512 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
453
|
1513 return;
|
|
|
1514 }
|
|
|
1515
|
|
|
1516 return;
|
|
|
1517 }
|
|
|
1518
|
|
|
1519 if (n == 0) {
|
|
459
|
1520 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
453
|
1521 "upstream prematurely closed connection");
|
|
|
1522 }
|
|
|
1523
|
|
|
1524 if (n == NGX_ERROR || n == 0) {
|
|
|
1525 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1526 return;
|
|
|
1527 }
|
|
|
1528
|
|
453
|
1529 u->buffer.last += n;
|
|
28
|
1530
|
|
|
1531 #if 0
|
|
453
|
1532 u->valid_header_in = 0;
|
|
|
1533
|
|
|
1534 u->peer.cached = 0;
|
|
28
|
1535 #endif
|
|
|
1536
|
|
453
|
1537 rc = u->process_header(r);
|
|
|
1538
|
|
|
1539 if (rc == NGX_AGAIN) {
|
|
|
1540
|
|
|
1541 if (u->buffer.pos == u->buffer.end) {
|
|
459
|
1542 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
453
|
1543 "upstream sent too big header");
|
|
|
1544
|
|
|
1545 ngx_http_upstream_next(r, u,
|
|
|
1546 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1547 return;
|
|
|
1548 }
|
|
|
1549
|
|
|
1550 continue;
|
|
28
|
1551 }
|
|
|
1552
|
|
453
|
1553 break;
|
|
28
|
1554 }
|
|
|
1555
|
|
|
1556 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1557 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1558 return;
|
|
|
1559 }
|
|
|
1560
|
|
356
|
1561 if (rc == NGX_ERROR) {
|
|
28
|
1562 ngx_http_upstream_finalize_request(r, u,
|
|
|
1563 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1564 return;
|
|
|
1565 }
|
|
|
1566
|
|
|
1567 /* rc == NGX_OK */
|
|
|
1568
|
|
601
|
1569 if (u->headers_in.status_n > NGX_HTTP_SPECIAL_RESPONSE) {
|
|
440
|
1570
|
|
|
1571 if (r->subrequest_in_memory) {
|
|
|
1572 u->buffer.last = u->buffer.pos;
|
|
58
|
1573 }
|
|
|
1574
|
|
440
|
1575 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1576 return;
|
|
|
1577 }
|
|
|
1578
|
|
440
|
1579 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1580 return;
|
|
|
1581 }
|
|
58
|
1582 }
|
|
|
1583
|
|
503
|
1584 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
64
|
1585 return;
|
|
|
1586 }
|
|
|
1587
|
|
248
|
1588 if (!r->subrequest_in_memory) {
|
|
|
1589 ngx_http_upstream_send_response(r, u);
|
|
|
1590 return;
|
|
|
1591 }
|
|
|
1592
|
|
|
1593 /* subrequest content in memory */
|
|
|
1594
|
|
|
1595 if (u->input_filter == NULL) {
|
|
|
1596 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1597 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1598 u->input_filter_ctx = r;
|
|
|
1599 }
|
|
|
1600
|
|
|
1601 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1602 ngx_http_upstream_finalize_request(r, u,
|
|
|
1603 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1604 return;
|
|
|
1605 }
|
|
|
1606
|
|
449
|
1607 n = u->buffer.last - u->buffer.pos;
|
|
|
1608
|
|
|
1609 if (n) {
|
|
|
1610 u->buffer.last -= n;
|
|
|
1611
|
|
459
|
1612 u->state->response_length += n;
|
|
|
1613
|
|
449
|
1614 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1615 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1616 return;
|
|
|
1617 }
|
|
|
1618
|
|
449
|
1619 if (u->length == 0) {
|
|
|
1620 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1621 return;
|
|
|
1622 }
|
|
248
|
1623 }
|
|
|
1624
|
|
455
|
1625 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1626
|
|
459
|
1627 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1628 }
|
|
|
1629
|
|
|
1630
|
|
294
|
1631 static ngx_int_t
|
|
440
|
1632 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1633 {
|
|
|
1634 ngx_uint_t status;
|
|
|
1635 ngx_http_upstream_next_t *un;
|
|
|
1636
|
|
|
1637 status = u->headers_in.status_n;
|
|
|
1638
|
|
|
1639 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1640
|
|
|
1641 if (status != un->status) {
|
|
|
1642 continue;
|
|
|
1643 }
|
|
|
1644
|
|
|
1645 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1646 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1647 return NGX_OK;
|
|
|
1648 }
|
|
|
1649
|
|
|
1650 #if (NGX_HTTP_CACHE)
|
|
|
1651
|
|
542
|
1652 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
1653 && (u->conf->cache_use_stale & un->mask))
|
|
|
1654 {
|
|
528
|
1655 ngx_int_t rc;
|
|
526
|
1656
|
|
|
1657 rc = u->reinit_request(r);
|
|
|
1658
|
|
|
1659 if (rc == NGX_OK) {
|
|
542
|
1660 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
526
|
1661 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
1662 }
|
|
|
1663
|
|
|
1664 ngx_http_upstream_finalize_request(r, u, rc);
|
|
440
|
1665 return NGX_OK;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 #endif
|
|
|
1669 }
|
|
|
1670
|
|
|
1671 return NGX_DECLINED;
|
|
|
1672 }
|
|
|
1673
|
|
|
1674
|
|
|
1675 static ngx_int_t
|
|
|
1676 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1677 ngx_http_upstream_t *u)
|
|
|
1678 {
|
|
|
1679 ngx_int_t status;
|
|
|
1680 ngx_uint_t i;
|
|
|
1681 ngx_table_elt_t *h;
|
|
|
1682 ngx_http_err_page_t *err_page;
|
|
|
1683 ngx_http_core_loc_conf_t *clcf;
|
|
|
1684
|
|
473
|
1685 status = u->headers_in.status_n;
|
|
|
1686
|
|
|
1687 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1688 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1689 return NGX_OK;
|
|
|
1690 }
|
|
|
1691
|
|
440
|
1692 if (!u->conf->intercept_errors) {
|
|
|
1693 return NGX_DECLINED;
|
|
|
1694 }
|
|
|
1695
|
|
|
1696 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1697
|
|
|
1698 if (clcf->error_pages == NULL) {
|
|
|
1699 return NGX_DECLINED;
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 err_page = clcf->error_pages->elts;
|
|
|
1703 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1704
|
|
|
1705 if (err_page[i].status == status) {
|
|
|
1706
|
|
542
|
1707 if (status == NGX_HTTP_UNAUTHORIZED
|
|
|
1708 && u->headers_in.www_authenticate)
|
|
|
1709 {
|
|
440
|
1710 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1711
|
|
|
1712 if (h == NULL) {
|
|
|
1713 ngx_http_upstream_finalize_request(r, u,
|
|
|
1714 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1715 return NGX_OK;
|
|
|
1716 }
|
|
|
1717
|
|
|
1718 *h = *u->headers_in.www_authenticate;
|
|
|
1719
|
|
|
1720 r->headers_out.www_authenticate = h;
|
|
|
1721 }
|
|
|
1722
|
|
|
1723 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1724
|
|
|
1725 return NGX_OK;
|
|
|
1726 }
|
|
|
1727 }
|
|
|
1728
|
|
|
1729 return NGX_DECLINED;
|
|
|
1730 }
|
|
|
1731
|
|
|
1732
|
|
|
1733 static ngx_int_t
|
|
294
|
1734 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1735 {
|
|
|
1736 int err;
|
|
|
1737 socklen_t len;
|
|
|
1738
|
|
|
1739 #if (NGX_HAVE_KQUEUE)
|
|
|
1740
|
|
|
1741 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1742 if (c->write->pending_eof) {
|
|
336
|
1743 c->log->action = "connecting to upstream";
|
|
296
|
1744 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1745 "kevent() reported that connect() failed");
|
|
|
1746 return NGX_ERROR;
|
|
|
1747 }
|
|
294
|
1748
|
|
|
1749 } else
|
|
|
1750 #endif
|
|
|
1751 {
|
|
296
|
1752 err = 0;
|
|
|
1753 len = sizeof(int);
|
|
|
1754
|
|
|
1755 /*
|
|
|
1756 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1757 * Solaris returns -1 and sets errno
|
|
|
1758 */
|
|
|
1759
|
|
|
1760 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1761 == -1)
|
|
|
1762 {
|
|
|
1763 err = ngx_errno;
|
|
|
1764 }
|
|
|
1765
|
|
|
1766 if (err) {
|
|
336
|
1767 c->log->action = "connecting to upstream";
|
|
296
|
1768 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1769 return NGX_ERROR;
|
|
|
1770 }
|
|
294
|
1771 }
|
|
|
1772
|
|
|
1773 return NGX_OK;
|
|
|
1774 }
|
|
|
1775
|
|
|
1776
|
|
503
|
1777 static ngx_int_t
|
|
|
1778 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1779 {
|
|
|
1780 ngx_str_t *uri, args;
|
|
|
1781 ngx_uint_t i, flags;
|
|
|
1782 ngx_list_part_t *part;
|
|
|
1783 ngx_table_elt_t *h;
|
|
|
1784 ngx_http_upstream_header_t *hh;
|
|
|
1785 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1786
|
|
|
1787 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1788
|
|
524
|
1789 if (u->headers_in.x_accel_redirect
|
|
|
1790 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
|
1791 {
|
|
503
|
1792 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1793
|
|
|
1794 part = &u->headers_in.headers.part;
|
|
|
1795 h = part->elts;
|
|
|
1796
|
|
|
1797 for (i = 0; /* void */; i++) {
|
|
|
1798
|
|
|
1799 if (i >= part->nelts) {
|
|
|
1800 if (part->next == NULL) {
|
|
|
1801 break;
|
|
|
1802 }
|
|
|
1803
|
|
|
1804 part = part->next;
|
|
|
1805 h = part->elts;
|
|
|
1806 i = 0;
|
|
|
1807 }
|
|
|
1808
|
|
|
1809 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1810 h[i].lowcase_key, h[i].key.len);
|
|
|
1811
|
|
|
1812 if (hh && hh->redirect) {
|
|
|
1813 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1814 ngx_http_finalize_request(r,
|
|
|
1815 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1816 return NGX_DONE;
|
|
|
1817 }
|
|
|
1818 }
|
|
|
1819 }
|
|
|
1820
|
|
|
1821 uri = &u->headers_in.x_accel_redirect->value;
|
|
613
|
1822 ngx_str_null(&args);
|
|
573
|
1823 flags = NGX_HTTP_LOG_UNSAFE;
|
|
503
|
1824
|
|
|
1825 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1826 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
|
1827 return NGX_DONE;
|
|
|
1828 }
|
|
|
1829
|
|
|
1830 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1831 r->method = NGX_HTTP_GET;
|
|
|
1832 }
|
|
|
1833
|
|
|
1834 r->valid_unparsed_uri = 0;
|
|
|
1835
|
|
|
1836 ngx_http_internal_redirect(r, uri, &args);
|
|
566
|
1837 ngx_http_finalize_request(r, NGX_DONE);
|
|
503
|
1838 return NGX_DONE;
|
|
|
1839 }
|
|
|
1840
|
|
|
1841 part = &u->headers_in.headers.part;
|
|
|
1842 h = part->elts;
|
|
|
1843
|
|
|
1844 for (i = 0; /* void */; i++) {
|
|
|
1845
|
|
|
1846 if (i >= part->nelts) {
|
|
|
1847 if (part->next == NULL) {
|
|
|
1848 break;
|
|
|
1849 }
|
|
|
1850
|
|
|
1851 part = part->next;
|
|
|
1852 h = part->elts;
|
|
|
1853 i = 0;
|
|
|
1854 }
|
|
|
1855
|
|
|
1856 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1857 h[i].lowcase_key, h[i].key.len))
|
|
|
1858 {
|
|
|
1859 continue;
|
|
|
1860 }
|
|
|
1861
|
|
|
1862 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1863 h[i].lowcase_key, h[i].key.len);
|
|
|
1864
|
|
|
1865 if (hh) {
|
|
|
1866 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1867 ngx_http_upstream_finalize_request(r, u,
|
|
|
1868 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1869 return NGX_DONE;
|
|
|
1870 }
|
|
|
1871
|
|
|
1872 continue;
|
|
|
1873 }
|
|
|
1874
|
|
|
1875 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1876 ngx_http_upstream_finalize_request(r, u,
|
|
|
1877 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1878 return NGX_DONE;
|
|
|
1879 }
|
|
|
1880 }
|
|
|
1881
|
|
|
1882 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1883 r->headers_out.server->hash = 0;
|
|
|
1884 }
|
|
|
1885
|
|
|
1886 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1887 r->headers_out.date->hash = 0;
|
|
|
1888 }
|
|
|
1889
|
|
|
1890 r->headers_out.status = u->headers_in.status_n;
|
|
|
1891 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1892
|
|
|
1893 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1894
|
|
|
1895 if (r->headers_out.content_length_n != -1) {
|
|
|
1896 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1897
|
|
|
1898 } else {
|
|
|
1899 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1900 }
|
|
|
1901
|
|
|
1902 return NGX_OK;
|
|
|
1903 }
|
|
|
1904
|
|
|
1905
|
|
248
|
1906 static void
|
|
459
|
1907 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1908 ngx_http_upstream_t *u)
|
|
248
|
1909 {
|
|
459
|
1910 size_t size;
|
|
|
1911 ssize_t n;
|
|
|
1912 ngx_buf_t *b;
|
|
|
1913 ngx_event_t *rev;
|
|
|
1914 ngx_connection_t *c;
|
|
|
1915
|
|
|
1916 c = u->peer.connection;
|
|
|
1917 rev = c->read;
|
|
248
|
1918
|
|
|
1919 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1920 "http upstream process body on memory");
|
|
|
1921
|
|
|
1922 if (rev->timedout) {
|
|
|
1923 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1924 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1925 return;
|
|
|
1926 }
|
|
|
1927
|
|
|
1928 b = &u->buffer;
|
|
|
1929
|
|
|
1930 for ( ;; ) {
|
|
|
1931
|
|
|
1932 size = b->end - b->last;
|
|
|
1933
|
|
|
1934 if (size == 0) {
|
|
|
1935 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
|
1936 "upstream buffer is too small to read repsonse");
|
|
|
1937 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1938 return;
|
|
|
1939 }
|
|
|
1940
|
|
|
1941 n = c->recv(c, b->last, size);
|
|
|
1942
|
|
|
1943 if (n == NGX_AGAIN) {
|
|
|
1944 break;
|
|
|
1945 }
|
|
|
1946
|
|
|
1947 if (n == 0 || n == NGX_ERROR) {
|
|
|
1948 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1949 return;
|
|
|
1950 }
|
|
|
1951
|
|
459
|
1952 u->state->response_length += n;
|
|
|
1953
|
|
248
|
1954 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1955 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1956 return;
|
|
|
1957 }
|
|
|
1958
|
|
|
1959 if (!rev->ready) {
|
|
|
1960 break;
|
|
|
1961 }
|
|
|
1962 }
|
|
|
1963
|
|
459
|
1964 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
1965 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1966 return;
|
|
|
1967 }
|
|
|
1968
|
|
|
1969 if (rev->active) {
|
|
|
1970 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
1971
|
|
|
1972 } else if (rev->timer_set) {
|
|
|
1973 ngx_del_timer(rev);
|
|
|
1974 }
|
|
230
|
1975 }
|
|
|
1976
|
|
|
1977
|
|
|
1978 static void
|
|
|
1979 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1980 {
|
|
|
1981 int tcp_nodelay;
|
|
459
|
1982 ssize_t n;
|
|
230
|
1983 ngx_int_t rc;
|
|
|
1984 ngx_event_pipe_t *p;
|
|
|
1985 ngx_connection_t *c;
|
|
|
1986 ngx_http_core_loc_conf_t *clcf;
|
|
|
1987
|
|
58
|
1988 rc = ngx_http_send_header(r);
|
|
28
|
1989
|
|
520
|
1990 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
1991 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
1992 return;
|
|
|
1993 }
|
|
|
1994
|
|
520
|
1995 c = r->connection;
|
|
|
1996
|
|
|
1997 if (r->header_only) {
|
|
|
1998
|
|
|
1999 if (u->cacheable || u->store) {
|
|
|
2000
|
|
|
2001 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
2002 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2003 ngx_shutdown_socket_n " failed");
|
|
|
2004 }
|
|
|
2005
|
|
|
2006 r->read_event_handler = ngx_http_request_empty_handler;
|
|
|
2007 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
2008 c->error = 1;
|
|
|
2009
|
|
|
2010 } else {
|
|
|
2011 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
2012 return;
|
|
|
2013 }
|
|
|
2014 }
|
|
|
2015
|
|
28
|
2016 u->header_sent = 1;
|
|
|
2017
|
|
122
|
2018 if (r->request_body && r->request_body->temp_file) {
|
|
503
|
2019 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
|
2020 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
2021 }
|
|
|
2022
|
|
130
|
2023 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2024
|
|
198
|
2025 if (!u->buffering) {
|
|
130
|
2026
|
|
|
2027 if (u->input_filter == NULL) {
|
|
|
2028 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
2029 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
2030 u->input_filter_ctx = r;
|
|
|
2031 }
|
|
|
2032
|
|
457
|
2033 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
2034 r->write_event_handler =
|
|
|
2035 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
2036
|
|
|
2037 r->limit_rate = 0;
|
|
|
2038
|
|
|
2039 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
2040 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2041 return;
|
|
|
2042 }
|
|
|
2043
|
|
132
|
2044 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
2045 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
2046
|
|
|
2047 tcp_nodelay = 1;
|
|
|
2048
|
|
|
2049 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
2050 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
2051 {
|
|
|
2052 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2053 "setsockopt(TCP_NODELAY) failed");
|
|
|
2054 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2055 return;
|
|
|
2056 }
|
|
|
2057
|
|
|
2058 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
2059 }
|
|
|
2060
|
|
459
|
2061 n = u->buffer.last - u->buffer.pos;
|
|
|
2062
|
|
|
2063 if (n) {
|
|
130
|
2064 u->buffer.last = u->buffer.pos;
|
|
|
2065
|
|
459
|
2066 u->state->response_length += n;
|
|
|
2067
|
|
|
2068 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
2069 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2070 return;
|
|
|
2071 }
|
|
|
2072
|
|
457
|
2073 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
2074
|
|
|
2075 } else {
|
|
|
2076 u->buffer.pos = u->buffer.start;
|
|
|
2077 u->buffer.last = u->buffer.start;
|
|
|
2078
|
|
|
2079 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
2080 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2081 return;
|
|
|
2082 }
|
|
336
|
2083
|
|
|
2084 if (u->peer.connection->read->ready) {
|
|
459
|
2085 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
2086 }
|
|
130
|
2087 }
|
|
|
2088
|
|
|
2089 return;
|
|
|
2090 }
|
|
|
2091
|
|
28
|
2092 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
2093
|
|
503
|
2094 #if (NGX_HTTP_CACHE)
|
|
|
2095
|
|
|
2096 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
|
2097 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
|
2098 r->cache->file.fd = NGX_INVALID_FILE;
|
|
28
|
2099 }
|
|
|
2100
|
|
631
|
2101 switch (ngx_http_test_predicates(r, u->conf->no_cache)) {
|
|
|
2102
|
|
|
2103 case NGX_ERROR:
|
|
|
2104 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2105 return;
|
|
|
2106
|
|
|
2107 case NGX_DECLINED:
|
|
|
2108 u->cacheable = 0;
|
|
|
2109 break;
|
|
|
2110
|
|
|
2111 default: /* NGX_OK */
|
|
|
2112
|
|
|
2113 if (u->cache_status == NGX_HTTP_CACHE_BYPASS) {
|
|
|
2114
|
|
|
2115 if (ngx_http_file_cache_new(r) != NGX_OK) {
|
|
|
2116 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2117 return;
|
|
|
2118 }
|
|
|
2119
|
|
|
2120 if (u->create_key(r) != NGX_OK) {
|
|
|
2121 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2122 return;
|
|
|
2123 }
|
|
|
2124
|
|
|
2125 /* TODO: add keys */
|
|
|
2126
|
|
|
2127 r->cache->min_uses = u->conf->cache_min_uses;
|
|
|
2128 r->cache->body_start = u->conf->buffer_size;
|
|
|
2129 r->cache->file_cache = u->conf->cache->data;
|
|
|
2130
|
|
|
2131 if (ngx_http_file_cache_create(r) != NGX_OK) {
|
|
|
2132 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2133 return;
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 u->cacheable = 1;
|
|
|
2137 }
|
|
|
2138
|
|
|
2139 break;
|
|
|
2140 }
|
|
|
2141
|
|
340
|
2142 if (u->cacheable) {
|
|
503
|
2143 time_t now, valid;
|
|
|
2144
|
|
512
|
2145 now = ngx_time();
|
|
|
2146
|
|
|
2147 valid = r->cache->valid_sec;
|
|
|
2148
|
|
|
2149 if (valid == 0) {
|
|
|
2150 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
|
2151 u->headers_in.status_n);
|
|
|
2152 if (valid) {
|
|
|
2153 r->cache->valid_sec = now + valid;
|
|
|
2154 }
|
|
|
2155 }
|
|
|
2156
|
|
503
|
2157 if (valid) {
|
|
|
2158 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
|
2159 r->cache->date = now;
|
|
|
2160 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
|
2161
|
|
|
2162 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
|
2163
|
|
|
2164 } else {
|
|
|
2165 u->cacheable = 0;
|
|
520
|
2166 r->headers_out.last_modified_time = -1;
|
|
503
|
2167 }
|
|
28
|
2168 }
|
|
|
2169
|
|
518
|
2170 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2171 "http cacheable: %d", u->cacheable);
|
|
|
2172
|
|
564
|
2173 if (u->cacheable == 0 && r->cache) {
|
|
|
2174 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
|
2175 }
|
|
|
2176
|
|
28
|
2177 #endif
|
|
|
2178
|
|
130
|
2179 p = u->pipe;
|
|
28
|
2180
|
|
|
2181 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
2182 p->output_ctx = r;
|
|
|
2183 p->tag = u->output.tag;
|
|
126
|
2184 p->bufs = u->conf->bufs;
|
|
28
|
2185 p->busy_size = u->conf->busy_buffers_size;
|
|
|
2186 p->upstream = u->peer.connection;
|
|
132
|
2187 p->downstream = c;
|
|
28
|
2188 p->pool = r->pool;
|
|
132
|
2189 p->log = c->log;
|
|
126
|
2190
|
|
340
|
2191 p->cacheable = u->cacheable || u->store;
|
|
28
|
2192
|
|
50
|
2193 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2194 if (p->temp_file == NULL) {
|
|
28
|
2195 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2196 return;
|
|
|
2197 }
|
|
|
2198
|
|
|
2199 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
2200 p->temp_file->file.log = c->log;
|
|
28
|
2201 p->temp_file->path = u->conf->temp_path;
|
|
|
2202 p->temp_file->pool = r->pool;
|
|
126
|
2203
|
|
503
|
2204 if (p->cacheable) {
|
|
28
|
2205 p->temp_file->persistent = 1;
|
|
318
|
2206
|
|
28
|
2207 } else {
|
|
216
|
2208 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
2209 p->temp_file->warn = "an upstream response is buffered "
|
|
|
2210 "to a temporary file";
|
|
|
2211 }
|
|
|
2212
|
|
|
2213 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
2214 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
2215
|
|
50
|
2216 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
2217 if (p->preread_bufs == NULL) {
|
|
28
|
2218 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2219 return;
|
|
|
2220 }
|
|
318
|
2221
|
|
130
|
2222 p->preread_bufs->buf = &u->buffer;
|
|
28
|
2223 p->preread_bufs->next = NULL;
|
|
130
|
2224 u->buffer.recycled = 1;
|
|
|
2225
|
|
|
2226 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
2227
|
|
340
|
2228 if (u->cacheable) {
|
|
318
|
2229
|
|
28
|
2230 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
2231 if (p->buf_to_file == NULL) {
|
|
|
2232 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2233 return;
|
|
|
2234 }
|
|
318
|
2235
|
|
130
|
2236 p->buf_to_file->pos = u->buffer.start;
|
|
|
2237 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
2238 p->buf_to_file->temporary = 1;
|
|
|
2239 }
|
|
|
2240
|
|
|
2241 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
|
2242 /* the posted aio operation may currupt a shadow buffer */
|
|
|
2243 p->single_buf = 1;
|
|
|
2244 }
|
|
|
2245
|
|
|
2246 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
2247 p->free_bufs = 1;
|
|
|
2248
|
|
|
2249 /*
|
|
130
|
2250 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
2251 * as though these bytes were read
|
|
|
2252 */
|
|
130
|
2253 u->buffer.last = u->buffer.pos;
|
|
28
|
2254
|
|
|
2255 if (u->conf->cyclic_temp_file) {
|
|
|
2256
|
|
|
2257 /*
|
|
|
2258 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
2259 * because the writing a new data may interfere with sendfile()
|
|
|
2260 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
2261 */
|
|
|
2262
|
|
|
2263 p->cyclic_temp_file = 1;
|
|
132
|
2264 c->sendfile = 0;
|
|
28
|
2265
|
|
|
2266 } else {
|
|
|
2267 p->cyclic_temp_file = 0;
|
|
|
2268 }
|
|
|
2269
|
|
|
2270 p->read_timeout = u->conf->read_timeout;
|
|
|
2271 p->send_timeout = clcf->send_timeout;
|
|
|
2272 p->send_lowat = clcf->send_lowat;
|
|
|
2273
|
|
457
|
2274 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
2275 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
2276
|
|
459
|
2277 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
2278 }
|
|
|
2279
|
|
|
2280
|
|
36
|
2281 static void
|
|
130
|
2282 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
2283 {
|
|
457
|
2284 ngx_event_t *wev;
|
|
|
2285 ngx_connection_t *c;
|
|
|
2286 ngx_http_upstream_t *u;
|
|
|
2287
|
|
|
2288 c = r->connection;
|
|
|
2289 u = r->upstream;
|
|
|
2290 wev = c->write;
|
|
|
2291
|
|
|
2292 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2293 "http upstream process non buffered downstream");
|
|
|
2294
|
|
|
2295 c->log->action = "sending to client";
|
|
|
2296
|
|
|
2297 if (wev->timedout) {
|
|
|
2298 c->timedout = 1;
|
|
|
2299 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
|
2300 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2301 return;
|
|
|
2302 }
|
|
|
2303
|
|
|
2304 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
2305 }
|
|
|
2306
|
|
|
2307
|
|
|
2308 static void
|
|
459
|
2309 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
2310 ngx_http_upstream_t *u)
|
|
457
|
2311 {
|
|
459
|
2312 ngx_connection_t *c;
|
|
|
2313
|
|
|
2314 c = u->peer.connection;
|
|
457
|
2315
|
|
|
2316 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2317 "http upstream process non buffered upstream");
|
|
|
2318
|
|
|
2319 c->log->action = "reading upstream";
|
|
|
2320
|
|
459
|
2321 if (c->read->timedout) {
|
|
457
|
2322 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2323 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2324 return;
|
|
|
2325 }
|
|
|
2326
|
|
|
2327 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
2328 }
|
|
|
2329
|
|
|
2330
|
|
|
2331 static void
|
|
|
2332 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
2333 ngx_uint_t do_write)
|
|
130
|
2334 {
|
|
|
2335 size_t size;
|
|
|
2336 ssize_t n;
|
|
|
2337 ngx_buf_t *b;
|
|
132
|
2338 ngx_int_t rc;
|
|
457
|
2339 ngx_connection_t *downstream, *upstream;
|
|
130
|
2340 ngx_http_upstream_t *u;
|
|
|
2341 ngx_http_core_loc_conf_t *clcf;
|
|
|
2342
|
|
244
|
2343 u = r->upstream;
|
|
260
|
2344 downstream = r->connection;
|
|
|
2345 upstream = u->peer.connection;
|
|
130
|
2346
|
|
|
2347 b = &u->buffer;
|
|
|
2348
|
|
457
|
2349 do_write = do_write || u->length == 0;
|
|
130
|
2350
|
|
|
2351 for ( ;; ) {
|
|
|
2352
|
|
|
2353 if (do_write) {
|
|
|
2354
|
|
|
2355 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
2356 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
2357
|
|
|
2358 if (rc == NGX_ERROR) {
|
|
130
|
2359 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2360 return;
|
|
|
2361 }
|
|
|
2362
|
|
|
2363 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
2364 &u->out_bufs, u->output.tag);
|
|
|
2365 }
|
|
|
2366
|
|
|
2367 if (u->busy_bufs == NULL) {
|
|
|
2368
|
|
|
2369 if (u->length == 0
|
|
260
|
2370 || upstream->read->eof
|
|
|
2371 || upstream->read->error)
|
|
130
|
2372 {
|
|
|
2373 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2374 return;
|
|
|
2375 }
|
|
|
2376
|
|
|
2377 b->pos = b->start;
|
|
|
2378 b->last = b->start;
|
|
|
2379 }
|
|
|
2380 }
|
|
|
2381
|
|
|
2382 size = b->end - b->last;
|
|
|
2383
|
|
|
2384 if (size > u->length) {
|
|
|
2385 size = u->length;
|
|
|
2386 }
|
|
|
2387
|
|
260
|
2388 if (size && upstream->read->ready) {
|
|
|
2389
|
|
|
2390 n = upstream->recv(upstream, b->last, size);
|
|
130
|
2391
|
|
|
2392 if (n == NGX_AGAIN) {
|
|
|
2393 break;
|
|
|
2394 }
|
|
|
2395
|
|
|
2396 if (n > 0) {
|
|
459
|
2397 u->state->response_length += n;
|
|
|
2398
|
|
130
|
2399 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
2400 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2401 return;
|
|
|
2402 }
|
|
|
2403 }
|
|
|
2404
|
|
|
2405 do_write = 1;
|
|
|
2406
|
|
|
2407 continue;
|
|
|
2408 }
|
|
|
2409
|
|
|
2410 break;
|
|
|
2411 }
|
|
|
2412
|
|
457
|
2413 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2414
|
|
260
|
2415 if (downstream->data == r) {
|
|
|
2416 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
455
|
2417 != NGX_OK)
|
|
132
|
2418 {
|
|
|
2419 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2420 return;
|
|
|
2421 }
|
|
130
|
2422 }
|
|
|
2423
|
|
276
|
2424 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2425 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2426
|
|
|
2427 } else if (downstream->write->timer_set) {
|
|
|
2428 ngx_del_timer(downstream->write);
|
|
130
|
2429 }
|
|
|
2430
|
|
455
|
2431 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2432 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2433 return;
|
|
|
2434 }
|
|
|
2435
|
|
276
|
2436 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2437 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2438
|
|
|
2439 } else if (upstream->read->timer_set) {
|
|
|
2440 ngx_del_timer(upstream->read);
|
|
130
|
2441 }
|
|
|
2442 }
|
|
|
2443
|
|
|
2444
|
|
|
2445 static ngx_int_t
|
|
|
2446 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2447 {
|
|
|
2448 return NGX_OK;
|
|
|
2449 }
|
|
|
2450
|
|
|
2451
|
|
|
2452 static ngx_int_t
|
|
|
2453 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2454 {
|
|
|
2455 ngx_http_request_t *r = data;
|
|
|
2456
|
|
|
2457 ngx_buf_t *b;
|
|
|
2458 ngx_chain_t *cl, **ll;
|
|
|
2459 ngx_http_upstream_t *u;
|
|
|
2460
|
|
|
2461 u = r->upstream;
|
|
|
2462
|
|
|
2463 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2464 ll = &cl->next;
|
|
|
2465 }
|
|
|
2466
|
|
|
2467 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2468 if (cl == NULL) {
|
|
|
2469 return NGX_ERROR;
|
|
|
2470 }
|
|
|
2471
|
|
|
2472 *ll = cl;
|
|
|
2473
|
|
|
2474 cl->buf->flush = 1;
|
|
|
2475 cl->buf->memory = 1;
|
|
|
2476
|
|
|
2477 b = &u->buffer;
|
|
|
2478
|
|
|
2479 cl->buf->pos = b->last;
|
|
|
2480 b->last += bytes;
|
|
|
2481 cl->buf->last = b->last;
|
|
366
|
2482 cl->buf->tag = u->output.tag;
|
|
130
|
2483
|
|
|
2484 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2485 return NGX_OK;
|
|
|
2486 }
|
|
|
2487
|
|
|
2488 u->length -= bytes;
|
|
|
2489
|
|
|
2490 return NGX_OK;
|
|
|
2491 }
|
|
|
2492
|
|
|
2493
|
|
|
2494 static void
|
|
58
|
2495 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2496 {
|
|
457
|
2497 ngx_event_t *wev;
|
|
|
2498 ngx_connection_t *c;
|
|
58
|
2499 ngx_event_pipe_t *p;
|
|
28
|
2500 ngx_http_upstream_t *u;
|
|
|
2501
|
|
457
|
2502 c = r->connection;
|
|
28
|
2503 u = r->upstream;
|
|
130
|
2504 p = u->pipe;
|
|
457
|
2505 wev = c->write;
|
|
|
2506
|
|
|
2507 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2508 "http upstream process downstream");
|
|
|
2509
|
|
|
2510 c->log->action = "sending to client";
|
|
|
2511
|
|
|
2512 if (wev->timedout) {
|
|
|
2513
|
|
|
2514 if (wev->delayed) {
|
|
|
2515
|
|
|
2516 wev->timedout = 0;
|
|
|
2517 wev->delayed = 0;
|
|
|
2518
|
|
|
2519 if (!wev->ready) {
|
|
|
2520 ngx_add_timer(wev, p->send_timeout);
|
|
|
2521
|
|
|
2522 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2523 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2524 }
|
|
|
2525
|
|
|
2526 return;
|
|
|
2527 }
|
|
|
2528
|
|
|
2529 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2530 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2531 return;
|
|
76
|
2532 }
|
|
28
|
2533
|
|
|
2534 } else {
|
|
457
|
2535 p->downstream_error = 1;
|
|
|
2536 c->timedout = 1;
|
|
|
2537 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2538 }
|
|
|
2539
|
|
|
2540 } else {
|
|
457
|
2541
|
|
|
2542 if (wev->delayed) {
|
|
|
2543
|
|
76
|
2544 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2545 "http downstream delayed");
|
|
|
2546
|
|
457
|
2547 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
455
|
2548 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2549 }
|
|
|
2550
|
|
|
2551 return;
|
|
|
2552 }
|
|
|
2553
|
|
457
|
2554 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
28
|
2555 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2556 return;
|
|
|
2557 }
|
|
|
2558 }
|
|
126
|
2559
|
|
457
|
2560 ngx_http_upstream_process_request(r);
|
|
|
2561 }
|
|
|
2562
|
|
|
2563
|
|
|
2564 static void
|
|
459
|
2565 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2566 ngx_http_upstream_t *u)
|
|
457
|
2567 {
|
|
459
|
2568 ngx_connection_t *c;
|
|
|
2569
|
|
|
2570 c = u->peer.connection;
|
|
457
|
2571
|
|
|
2572 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2573 "http upstream process upstream");
|
|
|
2574
|
|
|
2575 c->log->action = "reading upstream";
|
|
|
2576
|
|
459
|
2577 if (c->read->timedout) {
|
|
|
2578 u->pipe->upstream_error = 1;
|
|
457
|
2579 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2580
|
|
|
2581 } else {
|
|
459
|
2582 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
457
|
2583 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2584 return;
|
|
|
2585 }
|
|
|
2586 }
|
|
|
2587
|
|
|
2588 ngx_http_upstream_process_request(r);
|
|
|
2589 }
|
|
|
2590
|
|
|
2591
|
|
|
2592 static void
|
|
|
2593 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2594 {
|
|
473
|
2595 ngx_uint_t del;
|
|
457
|
2596 ngx_temp_file_t *tf;
|
|
|
2597 ngx_event_pipe_t *p;
|
|
|
2598 ngx_http_upstream_t *u;
|
|
|
2599
|
|
|
2600 u = r->upstream;
|
|
|
2601 p = u->pipe;
|
|
|
2602
|
|
28
|
2603 if (u->peer.connection) {
|
|
|
2604
|
|
318
|
2605 if (u->store) {
|
|
|
2606
|
|
473
|
2607 del = p->upstream_error;
|
|
|
2608
|
|
364
|
2609 tf = u->pipe->temp_file;
|
|
|
2610
|
|
476
|
2611 if (p->upstream_eof || p->upstream_done) {
|
|
473
|
2612
|
|
|
2613 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2614 && (u->headers_in.content_length_n == -1
|
|
|
2615 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2616 {
|
|
|
2617 ngx_http_upstream_store(r, u);
|
|
|
2618
|
|
|
2619 } else {
|
|
|
2620 del = 1;
|
|
|
2621 }
|
|
|
2622 }
|
|
|
2623
|
|
|
2624 if (del && tf->file.fd != NGX_INVALID_FILE) {
|
|
|
2625
|
|
364
|
2626 if (ngx_delete_file(tf->file.name.data) == NGX_FILE_ERROR) {
|
|
|
2627
|
|
318
|
2628 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2629 ngx_delete_file_n " \"%s\" failed",
|
|
|
2630 u->pipe->temp_file->file.name.data);
|
|
|
2631 }
|
|
|
2632 }
|
|
|
2633 }
|
|
|
2634
|
|
503
|
2635 #if (NGX_HTTP_CACHE)
|
|
|
2636
|
|
|
2637 if (u->cacheable) {
|
|
|
2638
|
|
|
2639 if (p->upstream_done) {
|
|
|
2640 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2641
|
|
|
2642 } else if (p->upstream_eof) {
|
|
|
2643
|
|
|
2644 /* TODO: check length & update cache */
|
|
|
2645
|
|
|
2646 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2647
|
|
|
2648 } else if (p->upstream_error) {
|
|
|
2649 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2650 }
|
|
|
2651 }
|
|
|
2652
|
|
|
2653 #endif
|
|
|
2654
|
|
|
2655 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
457
|
2656 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2657 "http upstream exit: %p", p->out);
|
|
28
|
2658 #if 0
|
|
|
2659 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2660 #endif
|
|
|
2661 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2662 return;
|
|
|
2663 }
|
|
|
2664 }
|
|
|
2665
|
|
|
2666 if (p->downstream_error) {
|
|
457
|
2667 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2668 "http upstream downstream error");
|
|
28
|
2669
|
|
522
|
2670 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
2671 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2672 }
|
|
|
2673 }
|
|
|
2674 }
|
|
|
2675
|
|
|
2676
|
|
36
|
2677 static void
|
|
318
|
2678 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2679 {
|
|
370
|
2680 size_t root;
|
|
|
2681 time_t lm;
|
|
|
2682 ngx_str_t path;
|
|
|
2683 ngx_temp_file_t *tf;
|
|
|
2684 ngx_ext_rename_file_t ext;
|
|
318
|
2685
|
|
358
|
2686 tf = u->pipe->temp_file;
|
|
|
2687
|
|
|
2688 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2689
|
|
|
2690 /* create file for empty 200 response */
|
|
|
2691
|
|
|
2692 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2693 if (tf == NULL) {
|
|
|
2694 return;
|
|
|
2695 }
|
|
|
2696
|
|
|
2697 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2698 tf->file.log = r->connection->log;
|
|
|
2699 tf->path = u->conf->temp_path;
|
|
|
2700 tf->pool = r->pool;
|
|
|
2701 tf->persistent = 1;
|
|
|
2702
|
|
|
2703 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2704 tf->persistent, tf->clean, tf->access)
|
|
|
2705 != NGX_OK)
|
|
|
2706 {
|
|
|
2707 return;
|
|
|
2708 }
|
|
|
2709
|
|
|
2710 u->pipe->temp_file = tf;
|
|
|
2711 }
|
|
|
2712
|
|
370
|
2713 ext.access = u->conf->store_access;
|
|
459
|
2714 ext.path_access = u->conf->store_access;
|
|
370
|
2715 ext.time = -1;
|
|
|
2716 ext.create_path = 1;
|
|
|
2717 ext.delete_file = 1;
|
|
|
2718 ext.log = r->connection->log;
|
|
318
|
2719
|
|
356
|
2720 if (u->headers_in.last_modified) {
|
|
|
2721
|
|
370
|
2722 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2723 u->headers_in.last_modified->value.len);
|
|
318
|
2724
|
|
|
2725 if (lm != NGX_ERROR) {
|
|
370
|
2726 ext.time = lm;
|
|
|
2727 ext.fd = tf->file.fd;
|
|
318
|
2728 }
|
|
|
2729 }
|
|
|
2730
|
|
320
|
2731 if (u->conf->store_lengths == NULL) {
|
|
|
2732
|
|
|
2733 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2734
|
|
|
2735 } else {
|
|
|
2736 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2737 u->conf->store_values->elts)
|
|
|
2738 == NULL)
|
|
|
2739 {
|
|
|
2740 return;
|
|
|
2741 }
|
|
|
2742 }
|
|
318
|
2743
|
|
556
|
2744 path.len--;
|
|
|
2745
|
|
318
|
2746 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2747 "upstream stores \"%s\" to \"%s\"",
|
|
|
2748 tf->file.name.data, path.data);
|
|
|
2749
|
|
|
2750 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2751 }
|
|
|
2752
|
|
|
2753
|
|
|
2754 static void
|
|
459
|
2755 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2756 {
|
|
459
|
2757 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2758 "http upstream dummy handler");
|
|
|
2759 }
|
|
|
2760
|
|
|
2761
|
|
36
|
2762 static void
|
|
|
2763 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2764 ngx_uint_t ft_type)
|
|
28
|
2765 {
|
|
260
|
2766 ngx_uint_t status, state;
|
|
28
|
2767
|
|
|
2768 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2769 "http next upstream, %xi", ft_type);
|
|
28
|
2770
|
|
|
2771 #if 0
|
|
|
2772 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2773 #endif
|
|
|
2774
|
|
74
|
2775 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2776 state = NGX_PEER_NEXT;
|
|
74
|
2777 } else {
|
|
260
|
2778 state = NGX_PEER_FAILED;
|
|
28
|
2779 }
|
|
74
|
2780
|
|
326
|
2781 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2782 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2783 }
|
|
74
|
2784
|
|
28
|
2785 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2786 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2787 "upstream timed out");
|
|
|
2788 }
|
|
126
|
2789
|
|
28
|
2790 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2791 status = 0;
|
|
|
2792
|
|
|
2793 } else {
|
|
|
2794 switch(ft_type) {
|
|
|
2795
|
|
|
2796 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2797 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2798 break;
|
|
|
2799
|
|
|
2800 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2801 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2802 break;
|
|
|
2803
|
|
|
2804 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2805 status = NGX_HTTP_NOT_FOUND;
|
|
|
2806 break;
|
|
|
2807
|
|
|
2808 /*
|
|
|
2809 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2810 * never reach here
|
|
|
2811 */
|
|
|
2812
|
|
|
2813 default:
|
|
|
2814 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2815 }
|
|
|
2816 }
|
|
|
2817
|
|
132
|
2818 if (r->connection->error) {
|
|
28
|
2819 ngx_http_upstream_finalize_request(r, u,
|
|
|
2820 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2821 return;
|
|
|
2822 }
|
|
|
2823
|
|
|
2824 if (status) {
|
|
|
2825 u->state->status = status;
|
|
|
2826
|
|
74
|
2827 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2828
|
|
|
2829 #if (NGX_HTTP_CACHE)
|
|
|
2830
|
|
542
|
2831 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
2832 && (u->conf->cache_use_stale & ft_type))
|
|
|
2833 {
|
|
526
|
2834 ngx_int_t rc;
|
|
|
2835
|
|
|
2836 rc = u->reinit_request(r);
|
|
|
2837
|
|
|
2838 if (rc == NGX_OK) {
|
|
542
|
2839 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
526
|
2840 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
2841 }
|
|
|
2842
|
|
|
2843 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
2844 return;
|
|
|
2845 }
|
|
|
2846 #endif
|
|
|
2847
|
|
|
2848 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2849 return;
|
|
|
2850 }
|
|
|
2851 }
|
|
|
2852
|
|
|
2853 if (u->peer.connection) {
|
|
|
2854 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2855 "close http upstream connection: %d",
|
|
|
2856 u->peer.connection->fd);
|
|
126
|
2857 #if (NGX_HTTP_SSL)
|
|
260
|
2858
|
|
126
|
2859 if (u->peer.connection->ssl) {
|
|
260
|
2860 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2861 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2862
|
|
|
2863 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2864 }
|
|
|
2865 #endif
|
|
260
|
2866
|
|
28
|
2867 ngx_close_connection(u->peer.connection);
|
|
|
2868 }
|
|
|
2869
|
|
|
2870 #if 0
|
|
|
2871 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2872 ngx_http_upstream_busy_lock(p);
|
|
|
2873 return;
|
|
|
2874 }
|
|
|
2875 #endif
|
|
|
2876
|
|
|
2877 ngx_http_upstream_connect(r, u);
|
|
|
2878 }
|
|
|
2879
|
|
|
2880
|
|
36
|
2881 static void
|
|
118
|
2882 ngx_http_upstream_cleanup(void *data)
|
|
|
2883 {
|
|
|
2884 ngx_http_request_t *r = data;
|
|
|
2885
|
|
356
|
2886 ngx_http_upstream_t *u;
|
|
|
2887
|
|
118
|
2888 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2889 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2890
|
|
356
|
2891 u = r->upstream;
|
|
|
2892
|
|
|
2893 if (u->resolved && u->resolved->ctx) {
|
|
|
2894 ngx_resolve_name_done(u->resolved->ctx);
|
|
573
|
2895 u->resolved->ctx = NULL;
|
|
348
|
2896 }
|
|
|
2897
|
|
356
|
2898 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2899 }
|
|
|
2900
|
|
|
2901
|
|
|
2902 static void
|
|
36
|
2903 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2904 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2905 {
|
|
262
|
2906 ngx_time_t *tp;
|
|
112
|
2907
|
|
32
|
2908 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2909 "finalize http upstream request: %i", rc);
|
|
28
|
2910
|
|
461
|
2911 if (u->cleanup) {
|
|
|
2912 *u->cleanup = NULL;
|
|
605
|
2913 u->cleanup = NULL;
|
|
461
|
2914 }
|
|
118
|
2915
|
|
573
|
2916 if (u->resolved && u->resolved->ctx) {
|
|
|
2917 ngx_resolve_name_done(u->resolved->ctx);
|
|
|
2918 u->resolved->ctx = NULL;
|
|
|
2919 }
|
|
|
2920
|
|
348
|
2921 if (u->state && u->state->response_sec) {
|
|
112
|
2922 tp = ngx_timeofday();
|
|
262
|
2923 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2924 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
459
|
2925
|
|
|
2926 if (u->pipe) {
|
|
|
2927 u->state->response_length = u->pipe->read_length;
|
|
|
2928 }
|
|
112
|
2929 }
|
|
|
2930
|
|
28
|
2931 u->finalize_request(r, rc);
|
|
|
2932
|
|
348
|
2933 if (u->peer.free) {
|
|
|
2934 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2935 }
|
|
260
|
2936
|
|
28
|
2937 if (u->peer.connection) {
|
|
260
|
2938
|
|
126
|
2939 #if (NGX_HTTP_SSL)
|
|
|
2940
|
|
|
2941 /* TODO: do not shutdown persistent connection */
|
|
|
2942
|
|
|
2943 if (u->peer.connection->ssl) {
|
|
260
|
2944
|
|
|
2945 /*
|
|
|
2946 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2947 * and do not wait its "close notify" shutdown alert.
|
|
|
2948 * It is acceptable according to the TLS standard.
|
|
|
2949 */
|
|
|
2950
|
|
|
2951 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2952
|
|
|
2953 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2954 }
|
|
|
2955 #endif
|
|
260
|
2956
|
|
|
2957 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2958 "close http upstream connection: %d",
|
|
|
2959 u->peer.connection->fd);
|
|
|
2960
|
|
28
|
2961 ngx_close_connection(u->peer.connection);
|
|
|
2962 }
|
|
|
2963
|
|
32
|
2964 u->peer.connection = NULL;
|
|
|
2965
|
|
130
|
2966 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2967 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2968 "http upstream temp fd: %d",
|
|
130
|
2969 u->pipe->temp_file->file.fd);
|
|
28
|
2970 }
|
|
|
2971
|
|
503
|
2972 #if (NGX_HTTP_CACHE)
|
|
|
2973
|
|
552
|
2974 if (u->cacheable && r->cache) {
|
|
503
|
2975 time_t valid;
|
|
|
2976
|
|
28
|
2977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2978 "http upstream cache fd: %d",
|
|
503
|
2979 r->cache->file.fd);
|
|
|
2980
|
|
|
2981 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
|
2982
|
|
|
2983 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
|
2984
|
|
|
2985 if (valid) {
|
|
|
2986 r->cache->valid_sec = ngx_time() + valid;
|
|
|
2987 r->cache->error = rc;
|
|
|
2988 }
|
|
|
2989 }
|
|
|
2990
|
|
|
2991 ngx_http_file_cache_free(r, u->pipe->temp_file);
|
|
28
|
2992 }
|
|
503
|
2993
|
|
28
|
2994 #endif
|
|
|
2995
|
|
518
|
2996 if (u->header_sent
|
|
|
2997 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
503
|
2998 {
|
|
|
2999 rc = 0;
|
|
|
3000 }
|
|
|
3001
|
|
64
|
3002 if (rc == NGX_DECLINED) {
|
|
|
3003 return;
|
|
|
3004 }
|
|
|
3005
|
|
32
|
3006 r->connection->log->action = "sending to client";
|
|
|
3007
|
|
546
|
3008 if (rc == 0) {
|
|
455
|
3009 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
3010 }
|
|
|
3011
|
|
|
3012 ngx_http_finalize_request(r, rc);
|
|
|
3013 }
|
|
|
3014
|
|
|
3015
|
|
58
|
3016 static ngx_int_t
|
|
|
3017 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3018 ngx_uint_t offset)
|
|
126
|
3019 {
|
|
58
|
3020 ngx_table_elt_t **ph;
|
|
126
|
3021
|
|
58
|
3022 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
3023
|
|
|
3024 if (*ph == NULL) {
|
|
|
3025 *ph = h;
|
|
|
3026 }
|
|
|
3027
|
|
|
3028 return NGX_OK;
|
|
|
3029 }
|
|
|
3030
|
|
|
3031
|
|
|
3032 static ngx_int_t
|
|
512
|
3033 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3034 ngx_uint_t offset)
|
|
|
3035 {
|
|
|
3036 return NGX_OK;
|
|
|
3037 }
|
|
|
3038
|
|
|
3039
|
|
|
3040 static ngx_int_t
|
|
627
|
3041 ngx_http_upstream_process_set_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3042 ngx_uint_t offset)
|
|
|
3043 {
|
|
|
3044 #if (NGX_HTTP_CACHE)
|
|
|
3045 ngx_http_upstream_t *u;
|
|
|
3046
|
|
|
3047 u = r->upstream;
|
|
|
3048
|
|
|
3049 if (!(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_SET_COOKIE)) {
|
|
|
3050 u->cacheable = 0;
|
|
|
3051 }
|
|
|
3052 #endif
|
|
|
3053
|
|
|
3054 return NGX_OK;
|
|
|
3055 }
|
|
|
3056
|
|
|
3057
|
|
|
3058 static ngx_int_t
|
|
512
|
3059 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
|
58
|
3060 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3061 {
|
|
524
|
3062 ngx_array_t *pa;
|
|
|
3063 ngx_table_elt_t **ph;
|
|
|
3064 ngx_http_upstream_t *u;
|
|
|
3065
|
|
|
3066 u = r->upstream;
|
|
|
3067 pa = &u->headers_in.cache_control;
|
|
58
|
3068
|
|
|
3069 if (pa->elts == NULL) {
|
|
|
3070 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3071 {
|
|
|
3072 return NGX_ERROR;
|
|
|
3073 }
|
|
|
3074 }
|
|
|
3075
|
|
|
3076 ph = ngx_array_push(pa);
|
|
|
3077 if (ph == NULL) {
|
|
|
3078 return NGX_ERROR;
|
|
|
3079 }
|
|
|
3080
|
|
|
3081 *ph = h;
|
|
|
3082
|
|
520
|
3083 #if (NGX_HTTP_CACHE)
|
|
|
3084 {
|
|
|
3085 u_char *p, *last;
|
|
|
3086 ngx_int_t n;
|
|
|
3087
|
|
524
|
3088 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
|
3089 return NGX_OK;
|
|
|
3090 }
|
|
|
3091
|
|
512
|
3092 if (r->cache == NULL) {
|
|
|
3093 return NGX_OK;
|
|
|
3094 }
|
|
|
3095
|
|
|
3096 if (r->cache->valid_sec != 0) {
|
|
|
3097 return NGX_OK;
|
|
|
3098 }
|
|
|
3099
|
|
613
|
3100 p = h->value.data;
|
|
|
3101 last = p + h->value.len;
|
|
|
3102
|
|
|
3103 if (ngx_strlcasestrn(p, last, (u_char *) "no-cache", 8 - 1) != NULL
|
|
|
3104 || ngx_strlcasestrn(p, last, (u_char *) "no-store", 8 - 1) != NULL
|
|
|
3105 || ngx_strlcasestrn(p, last, (u_char *) "private", 7 - 1) != NULL)
|
|
512
|
3106 {
|
|
524
|
3107 u->cacheable = 0;
|
|
512
|
3108 return NGX_OK;
|
|
|
3109 }
|
|
|
3110
|
|
613
|
3111 p = ngx_strlcasestrn(p, last, (u_char *) "max-age=", 8 - 1);
|
|
512
|
3112
|
|
|
3113 if (p == NULL) {
|
|
|
3114 return NGX_OK;
|
|
|
3115 }
|
|
|
3116
|
|
|
3117 n = 0;
|
|
|
3118
|
|
|
3119 for (p += 8; p < last; p++) {
|
|
579
|
3120 if (*p == ',' || *p == ';' || *p == ' ') {
|
|
512
|
3121 break;
|
|
|
3122 }
|
|
|
3123
|
|
|
3124 if (*p >= '0' && *p <= '9') {
|
|
|
3125 n = n * 10 + *p - '0';
|
|
|
3126 continue;
|
|
|
3127 }
|
|
|
3128
|
|
524
|
3129 u->cacheable = 0;
|
|
512
|
3130 return NGX_OK;
|
|
|
3131 }
|
|
|
3132
|
|
|
3133 if (n == 0) {
|
|
524
|
3134 u->cacheable = 0;
|
|
512
|
3135 return NGX_OK;
|
|
|
3136 }
|
|
|
3137
|
|
|
3138 r->cache->valid_sec = ngx_time() + n;
|
|
520
|
3139 }
|
|
|
3140 #endif
|
|
|
3141
|
|
58
|
3142 return NGX_OK;
|
|
|
3143 }
|
|
|
3144
|
|
|
3145
|
|
|
3146 static ngx_int_t
|
|
512
|
3147 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
58
|
3148 ngx_uint_t offset)
|
|
|
3149 {
|
|
524
|
3150 ngx_http_upstream_t *u;
|
|
|
3151
|
|
|
3152 u = r->upstream;
|
|
|
3153 u->headers_in.expires = h;
|
|
520
|
3154
|
|
|
3155 #if (NGX_HTTP_CACHE)
|
|
|
3156 {
|
|
512
|
3157 time_t expires;
|
|
|
3158
|
|
524
|
3159 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
|
3160 return NGX_OK;
|
|
|
3161 }
|
|
|
3162
|
|
512
|
3163 if (r->cache == NULL) {
|
|
|
3164 return NGX_OK;
|
|
|
3165 }
|
|
|
3166
|
|
|
3167 if (r->cache->valid_sec != 0) {
|
|
|
3168 return NGX_OK;
|
|
|
3169 }
|
|
|
3170
|
|
|
3171 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
|
3172
|
|
|
3173 if (expires == NGX_ERROR || expires < ngx_time()) {
|
|
524
|
3174 u->cacheable = 0;
|
|
512
|
3175 return NGX_OK;
|
|
|
3176 }
|
|
|
3177
|
|
|
3178 r->cache->valid_sec = expires;
|
|
520
|
3179 }
|
|
|
3180 #endif
|
|
512
|
3181
|
|
|
3182 return NGX_OK;
|
|
|
3183 }
|
|
|
3184
|
|
|
3185
|
|
|
3186 static ngx_int_t
|
|
|
3187 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
|
3188 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3189 {
|
|
524
|
3190 ngx_http_upstream_t *u;
|
|
|
3191
|
|
|
3192 u = r->upstream;
|
|
|
3193 u->headers_in.x_accel_expires = h;
|
|
520
|
3194
|
|
|
3195 #if (NGX_HTTP_CACHE)
|
|
|
3196 {
|
|
512
|
3197 u_char *p;
|
|
|
3198 size_t len;
|
|
|
3199 ngx_int_t n;
|
|
|
3200
|
|
524
|
3201 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
|
3202 return NGX_OK;
|
|
|
3203 }
|
|
|
3204
|
|
512
|
3205 if (r->cache == NULL) {
|
|
|
3206 return NGX_OK;
|
|
|
3207 }
|
|
|
3208
|
|
|
3209 len = h->value.len;
|
|
|
3210 p = h->value.data;
|
|
|
3211
|
|
|
3212 if (p[0] != '@') {
|
|
|
3213 n = ngx_atoi(p, len);
|
|
|
3214
|
|
|
3215 switch (n) {
|
|
|
3216 case 0:
|
|
524
|
3217 u->cacheable = 0;
|
|
512
|
3218 case NGX_ERROR:
|
|
|
3219 return NGX_OK;
|
|
|
3220
|
|
|
3221 default:
|
|
|
3222 r->cache->valid_sec = ngx_time() + n;
|
|
|
3223 return NGX_OK;
|
|
|
3224 }
|
|
|
3225 }
|
|
|
3226
|
|
|
3227 p++;
|
|
|
3228 len--;
|
|
|
3229
|
|
|
3230 n = ngx_atoi(p, len);
|
|
|
3231
|
|
|
3232 if (n != NGX_ERROR) {
|
|
|
3233 r->cache->valid_sec = n;
|
|
|
3234 }
|
|
520
|
3235 }
|
|
|
3236 #endif
|
|
512
|
3237
|
|
58
|
3238 return NGX_OK;
|
|
|
3239 }
|
|
|
3240
|
|
|
3241
|
|
|
3242 static ngx_int_t
|
|
76
|
3243 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3244 ngx_uint_t offset)
|
|
126
|
3245 {
|
|
76
|
3246 ngx_int_t n;
|
|
|
3247
|
|
|
3248 r->upstream->headers_in.x_accel_limit_rate = h;
|
|
|
3249
|
|
|
3250 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
3251
|
|
|
3252 if (n != NGX_ERROR) {
|
|
|
3253 r->limit_rate = (size_t) n;
|
|
|
3254 }
|
|
|
3255
|
|
|
3256 return NGX_OK;
|
|
|
3257 }
|
|
|
3258
|
|
|
3259
|
|
|
3260 static ngx_int_t
|
|
198
|
3261 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3262 ngx_uint_t offset)
|
|
|
3263 {
|
|
|
3264 u_char c0, c1, c2;
|
|
|
3265
|
|
|
3266 if (r->upstream->conf->change_buffering) {
|
|
|
3267
|
|
|
3268 if (h->value.len == 2) {
|
|
|
3269 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3270 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3271
|
|
|
3272 if (c0 == 'n' && c1 == 'o') {
|
|
|
3273 r->upstream->buffering = 0;
|
|
|
3274 }
|
|
|
3275
|
|
|
3276 } else if (h->value.len == 3) {
|
|
|
3277 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3278 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3279 c2 = ngx_tolower(h->value.data[2]);
|
|
|
3280
|
|
|
3281 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
|
3282 r->upstream->buffering = 1;
|
|
|
3283 }
|
|
|
3284 }
|
|
|
3285 }
|
|
|
3286
|
|
|
3287 return NGX_OK;
|
|
|
3288 }
|
|
|
3289
|
|
|
3290
|
|
|
3291 static ngx_int_t
|
|
206
|
3292 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3293 ngx_uint_t offset)
|
|
|
3294 {
|
|
|
3295 r->headers_out.override_charset = &h->value;
|
|
|
3296
|
|
|
3297 return NGX_OK;
|
|
|
3298 }
|
|
|
3299
|
|
|
3300
|
|
|
3301 static ngx_int_t
|
|
58
|
3302 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3303 ngx_uint_t offset)
|
|
|
3304 {
|
|
122
|
3305 ngx_table_elt_t *ho, **ph;
|
|
58
|
3306
|
|
|
3307 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3308 if (ho == NULL) {
|
|
|
3309 return NGX_ERROR;
|
|
|
3310 }
|
|
|
3311
|
|
|
3312 *ho = *h;
|
|
|
3313
|
|
122
|
3314 if (offset) {
|
|
|
3315 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
3316 *ph = ho;
|
|
|
3317 }
|
|
|
3318
|
|
58
|
3319 return NGX_OK;
|
|
|
3320 }
|
|
|
3321
|
|
|
3322
|
|
|
3323 static ngx_int_t
|
|
|
3324 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
3325 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3326 {
|
|
|
3327 ngx_array_t *pa;
|
|
|
3328 ngx_table_elt_t *ho, **ph;
|
|
|
3329
|
|
|
3330 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
3331
|
|
|
3332 if (pa->elts == NULL) {
|
|
|
3333 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3334 {
|
|
|
3335 return NGX_ERROR;
|
|
|
3336 }
|
|
|
3337 }
|
|
|
3338
|
|
|
3339 ph = ngx_array_push(pa);
|
|
|
3340 if (ph == NULL) {
|
|
|
3341 return NGX_ERROR;
|
|
|
3342 }
|
|
|
3343
|
|
|
3344 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3345 if (ho == NULL) {
|
|
|
3346 return NGX_ERROR;
|
|
|
3347 }
|
|
|
3348
|
|
|
3349 *ho = *h;
|
|
|
3350 *ph = ho;
|
|
|
3351
|
|
|
3352 return NGX_OK;
|
|
|
3353 }
|
|
|
3354
|
|
|
3355
|
|
|
3356 static ngx_int_t
|
|
|
3357 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3358 ngx_uint_t offset)
|
|
|
3359 {
|
|
206
|
3360 u_char *p, *last;
|
|
|
3361
|
|
|
3362 r->headers_out.content_type_len = h->value.len;
|
|
58
|
3363 r->headers_out.content_type = h->value;
|
|
534
|
3364 r->headers_out.content_type_lowcase = NULL;
|
|
58
|
3365
|
|
206
|
3366 for (p = h->value.data; *p; p++) {
|
|
|
3367
|
|
|
3368 if (*p != ';') {
|
|
|
3369 continue;
|
|
|
3370 }
|
|
|
3371
|
|
|
3372 last = p;
|
|
|
3373
|
|
|
3374 while (*++p == ' ') { /* void */ }
|
|
|
3375
|
|
372
|
3376 if (*p == '\0') {
|
|
|
3377 return NGX_OK;
|
|
|
3378 }
|
|
|
3379
|
|
286
|
3380 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
3381 continue;
|
|
|
3382 }
|
|
|
3383
|
|
|
3384 p += 8;
|
|
|
3385
|
|
|
3386 r->headers_out.content_type_len = last - h->value.data;
|
|
|
3387
|
|
437
|
3388 if (*p == '"') {
|
|
|
3389 p++;
|
|
|
3390 }
|
|
|
3391
|
|
|
3392 last = h->value.data + h->value.len;
|
|
|
3393
|
|
|
3394 if (*(last - 1) == '"') {
|
|
|
3395 last--;
|
|
|
3396 }
|
|
|
3397
|
|
|
3398 r->headers_out.charset.len = last - p;
|
|
206
|
3399 r->headers_out.charset.data = p;
|
|
292
|
3400
|
|
|
3401 return NGX_OK;
|
|
206
|
3402 }
|
|
|
3403
|
|
58
|
3404 return NGX_OK;
|
|
|
3405 }
|
|
|
3406
|
|
|
3407
|
|
|
3408 static ngx_int_t
|
|
|
3409 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3410 ngx_uint_t offset)
|
|
|
3411 {
|
|
|
3412 ngx_table_elt_t *ho;
|
|
|
3413
|
|
|
3414 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3415 if (ho == NULL) {
|
|
|
3416 return NGX_ERROR;
|
|
|
3417 }
|
|
|
3418
|
|
|
3419 *ho = *h;
|
|
|
3420
|
|
|
3421 r->headers_out.content_length = ho;
|
|
|
3422 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
3423
|
|
|
3424 return NGX_OK;
|
|
|
3425 }
|
|
|
3426
|
|
|
3427
|
|
|
3428 static ngx_int_t
|
|
503
|
3429 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3430 ngx_uint_t offset)
|
|
|
3431 {
|
|
|
3432 ngx_table_elt_t *ho;
|
|
|
3433
|
|
|
3434 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3435 if (ho == NULL) {
|
|
|
3436 return NGX_ERROR;
|
|
|
3437 }
|
|
|
3438
|
|
|
3439 *ho = *h;
|
|
|
3440
|
|
550
|
3441 r->headers_out.last_modified = ho;
|
|
|
3442
|
|
503
|
3443 #if (NGX_HTTP_CACHE)
|
|
|
3444
|
|
542
|
3445 if (r->upstream->cacheable) {
|
|
503
|
3446 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
|
3447 h->value.len);
|
|
|
3448 }
|
|
|
3449
|
|
|
3450 #endif
|
|
|
3451
|
|
|
3452 return NGX_OK;
|
|
|
3453 }
|
|
|
3454
|
|
|
3455
|
|
|
3456 static ngx_int_t
|
|
58
|
3457 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3458 ngx_uint_t offset)
|
|
|
3459 {
|
|
|
3460 ngx_int_t rc;
|
|
|
3461 ngx_table_elt_t *ho;
|
|
|
3462
|
|
|
3463 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3464 if (ho == NULL) {
|
|
|
3465 return NGX_ERROR;
|
|
|
3466 }
|
|
|
3467
|
|
|
3468 *ho = *h;
|
|
|
3469
|
|
|
3470 if (r->upstream->rewrite_redirect) {
|
|
|
3471 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
3472
|
|
78
|
3473 if (rc == NGX_DECLINED) {
|
|
|
3474 return NGX_OK;
|
|
|
3475 }
|
|
|
3476
|
|
58
|
3477 if (rc == NGX_OK) {
|
|
|
3478 r->headers_out.location = ho;
|
|
|
3479
|
|
|
3480 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3481 "rewritten location: \"%V\"", &ho->value);
|
|
|
3482 }
|
|
|
3483
|
|
|
3484 return rc;
|
|
|
3485 }
|
|
|
3486
|
|
348
|
3487 if (ho->value.data[0] != '/') {
|
|
|
3488 r->headers_out.location = ho;
|
|
|
3489 }
|
|
|
3490
|
|
58
|
3491 /*
|
|
|
3492 * we do not set r->headers_out.location here to avoid the handling
|
|
|
3493 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
3494 */
|
|
|
3495
|
|
|
3496 return NGX_OK;
|
|
|
3497 }
|
|
|
3498
|
|
|
3499
|
|
|
3500 static ngx_int_t
|
|
|
3501 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3502 ngx_uint_t offset)
|
|
|
3503 {
|
|
|
3504 u_char *p;
|
|
|
3505 ngx_int_t rc;
|
|
|
3506 ngx_table_elt_t *ho;
|
|
|
3507
|
|
|
3508 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3509 if (ho == NULL) {
|
|
|
3510 return NGX_ERROR;
|
|
|
3511 }
|
|
|
3512
|
|
|
3513 *ho = *h;
|
|
|
3514
|
|
|
3515 if (r->upstream->rewrite_redirect) {
|
|
|
3516
|
|
340
|
3517 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
3518
|
|
|
3519 if (p) {
|
|
|
3520 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
3521
|
|
|
3522 } else {
|
|
|
3523 return NGX_OK;
|
|
|
3524 }
|
|
|
3525
|
|
78
|
3526 if (rc == NGX_DECLINED) {
|
|
|
3527 return NGX_OK;
|
|
|
3528 }
|
|
|
3529
|
|
58
|
3530 if (rc == NGX_OK) {
|
|
348
|
3531 r->headers_out.refresh = ho;
|
|
|
3532
|
|
58
|
3533 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3534 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
3535 }
|
|
|
3536
|
|
|
3537 return rc;
|
|
|
3538 }
|
|
|
3539
|
|
348
|
3540 r->headers_out.refresh = ho;
|
|
|
3541
|
|
58
|
3542 return NGX_OK;
|
|
|
3543 }
|
|
|
3544
|
|
|
3545
|
|
503
|
3546 static ngx_int_t
|
|
|
3547 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
3548 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3549 {
|
|
|
3550 ngx_table_elt_t *ho;
|
|
|
3551
|
|
|
3552 #if (NGX_HTTP_CACHE)
|
|
|
3553
|
|
|
3554 if (r->cached) {
|
|
|
3555 r->allow_ranges = 1;
|
|
|
3556 return NGX_OK;
|
|
|
3557
|
|
|
3558 }
|
|
|
3559
|
|
|
3560 #endif
|
|
|
3561
|
|
|
3562 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3563 if (ho == NULL) {
|
|
|
3564 return NGX_ERROR;
|
|
|
3565 }
|
|
|
3566
|
|
|
3567 *ho = *h;
|
|
|
3568
|
|
550
|
3569 r->headers_out.accept_ranges = ho;
|
|
|
3570
|
|
503
|
3571 return NGX_OK;
|
|
|
3572 }
|
|
|
3573
|
|
|
3574
|
|
58
|
3575 #if (NGX_HTTP_GZIP)
|
|
|
3576
|
|
|
3577 static ngx_int_t
|
|
|
3578 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
3579 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3580 {
|
|
|
3581 ngx_table_elt_t *ho;
|
|
|
3582
|
|
|
3583 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3584 if (ho == NULL) {
|
|
|
3585 return NGX_ERROR;
|
|
|
3586 }
|
|
|
3587
|
|
|
3588 *ho = *h;
|
|
|
3589
|
|
|
3590 r->headers_out.content_encoding = ho;
|
|
|
3591
|
|
|
3592 return NGX_OK;
|
|
|
3593 }
|
|
|
3594
|
|
|
3595 #endif
|
|
|
3596
|
|
|
3597
|
|
36
|
3598 static ngx_int_t
|
|
122
|
3599 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
3600 {
|
|
260
|
3601 ngx_http_variable_t *var, *v;
|
|
28
|
3602
|
|
122
|
3603 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
3604 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
3605 if (var == NULL) {
|
|
|
3606 return NGX_ERROR;
|
|
|
3607 }
|
|
|
3608
|
|
186
|
3609 var->get_handler = v->get_handler;
|
|
122
|
3610 var->data = v->data;
|
|
|
3611 }
|
|
|
3612
|
|
28
|
3613 return NGX_OK;
|
|
|
3614 }
|
|
58
|
3615
|
|
|
3616
|
|
122
|
3617 static ngx_int_t
|
|
298
|
3618 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
3619 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3620 {
|
|
|
3621 u_char *p;
|
|
|
3622 size_t len;
|
|
|
3623 ngx_uint_t i;
|
|
|
3624 ngx_http_upstream_state_t *state;
|
|
|
3625
|
|
|
3626 v->valid = 1;
|
|
340
|
3627 v->no_cacheable = 0;
|
|
298
|
3628 v->not_found = 0;
|
|
|
3629
|
|
|
3630 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3631 v->not_found = 1;
|
|
|
3632 return NGX_OK;
|
|
|
3633 }
|
|
|
3634
|
|
|
3635 len = 0;
|
|
|
3636 state = r->upstream_states->elts;
|
|
|
3637
|
|
|
3638 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
3639 if (state[i].peer) {
|
|
|
3640 len += state[i].peer->len + 2;
|
|
|
3641
|
|
|
3642 } else {
|
|
|
3643 len += 3;
|
|
|
3644 }
|
|
|
3645 }
|
|
|
3646
|
|
382
|
3647 p = ngx_pnalloc(r->pool, len);
|
|
298
|
3648 if (p == NULL) {
|
|
|
3649 return NGX_ERROR;
|
|
|
3650 }
|
|
|
3651
|
|
|
3652 v->data = p;
|
|
|
3653
|
|
|
3654 i = 0;
|
|
|
3655
|
|
|
3656 for ( ;; ) {
|
|
|
3657 if (state[i].peer) {
|
|
|
3658 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3659 }
|
|
|
3660
|
|
|
3661 if (++i == r->upstream_states->nelts) {
|
|
|
3662 break;
|
|
|
3663 }
|
|
|
3664
|
|
|
3665 if (state[i].peer) {
|
|
|
3666 *p++ = ',';
|
|
|
3667 *p++ = ' ';
|
|
|
3668
|
|
|
3669 } else {
|
|
|
3670 *p++ = ' ';
|
|
|
3671 *p++ = ':';
|
|
|
3672 *p++ = ' ';
|
|
|
3673
|
|
|
3674 if (++i == r->upstream_states->nelts) {
|
|
|
3675 break;
|
|
|
3676 }
|
|
|
3677
|
|
|
3678 continue;
|
|
|
3679 }
|
|
|
3680 }
|
|
|
3681
|
|
|
3682 v->len = p - v->data;
|
|
|
3683
|
|
|
3684 return NGX_OK;
|
|
|
3685 }
|
|
|
3686
|
|
|
3687
|
|
|
3688 static ngx_int_t
|
|
122
|
3689 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3690 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3691 {
|
|
|
3692 u_char *p;
|
|
|
3693 size_t len;
|
|
|
3694 ngx_uint_t i;
|
|
|
3695 ngx_http_upstream_state_t *state;
|
|
|
3696
|
|
|
3697 v->valid = 1;
|
|
340
|
3698 v->no_cacheable = 0;
|
|
122
|
3699 v->not_found = 0;
|
|
|
3700
|
|
296
|
3701 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3702 v->not_found = 1;
|
|
|
3703 return NGX_OK;
|
|
|
3704 }
|
|
|
3705
|
|
296
|
3706 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3707
|
|
382
|
3708 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3709 if (p == NULL) {
|
|
|
3710 return NGX_ERROR;
|
|
|
3711 }
|
|
|
3712
|
|
|
3713 v->data = p;
|
|
|
3714
|
|
|
3715 i = 0;
|
|
296
|
3716 state = r->upstream_states->elts;
|
|
122
|
3717
|
|
|
3718 for ( ;; ) {
|
|
296
|
3719 if (state[i].status) {
|
|
|
3720 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3721
|
|
|
3722 } else {
|
|
296
|
3723 *p++ = '-';
|
|
122
|
3724 }
|
|
|
3725
|
|
296
|
3726 if (++i == r->upstream_states->nelts) {
|
|
122
|
3727 break;
|
|
|
3728 }
|
|
|
3729
|
|
296
|
3730 if (state[i].peer) {
|
|
|
3731 *p++ = ',';
|
|
|
3732 *p++ = ' ';
|
|
|
3733
|
|
|
3734 } else {
|
|
|
3735 *p++ = ' ';
|
|
|
3736 *p++ = ':';
|
|
|
3737 *p++ = ' ';
|
|
|
3738
|
|
|
3739 if (++i == r->upstream_states->nelts) {
|
|
|
3740 break;
|
|
|
3741 }
|
|
|
3742
|
|
|
3743 continue;
|
|
|
3744 }
|
|
122
|
3745 }
|
|
|
3746
|
|
|
3747 v->len = p - v->data;
|
|
|
3748
|
|
|
3749 return NGX_OK;
|
|
|
3750 }
|
|
|
3751
|
|
|
3752
|
|
|
3753 static ngx_int_t
|
|
|
3754 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3755 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3756 {
|
|
|
3757 u_char *p;
|
|
|
3758 size_t len;
|
|
|
3759 ngx_uint_t i;
|
|
262
|
3760 ngx_msec_int_t ms;
|
|
122
|
3761 ngx_http_upstream_state_t *state;
|
|
|
3762
|
|
|
3763 v->valid = 1;
|
|
340
|
3764 v->no_cacheable = 0;
|
|
122
|
3765 v->not_found = 0;
|
|
|
3766
|
|
296
|
3767 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3768 v->not_found = 1;
|
|
|
3769 return NGX_OK;
|
|
|
3770 }
|
|
|
3771
|
|
296
|
3772 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3773
|
|
382
|
3774 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3775 if (p == NULL) {
|
|
|
3776 return NGX_ERROR;
|
|
|
3777 }
|
|
|
3778
|
|
|
3779 v->data = p;
|
|
|
3780
|
|
|
3781 i = 0;
|
|
296
|
3782 state = r->upstream_states->elts;
|
|
122
|
3783
|
|
|
3784 for ( ;; ) {
|
|
296
|
3785 if (state[i].status) {
|
|
346
|
3786 ms = (ngx_msec_int_t)
|
|
|
3787 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
613
|
3788 ms = ngx_max(ms, 0);
|
|
262
|
3789 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3790
|
|
|
3791 } else {
|
|
|
3792 *p++ = '-';
|
|
122
|
3793 }
|
|
|
3794
|
|
296
|
3795 if (++i == r->upstream_states->nelts) {
|
|
122
|
3796 break;
|
|
|
3797 }
|
|
|
3798
|
|
296
|
3799 if (state[i].peer) {
|
|
|
3800 *p++ = ',';
|
|
|
3801 *p++ = ' ';
|
|
|
3802
|
|
|
3803 } else {
|
|
|
3804 *p++ = ' ';
|
|
|
3805 *p++ = ':';
|
|
|
3806 *p++ = ' ';
|
|
|
3807
|
|
|
3808 if (++i == r->upstream_states->nelts) {
|
|
|
3809 break;
|
|
|
3810 }
|
|
|
3811
|
|
|
3812 continue;
|
|
|
3813 }
|
|
122
|
3814 }
|
|
|
3815
|
|
|
3816 v->len = p - v->data;
|
|
|
3817
|
|
|
3818 return NGX_OK;
|
|
|
3819 }
|
|
|
3820
|
|
|
3821
|
|
459
|
3822 static ngx_int_t
|
|
|
3823 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3824 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3825 {
|
|
|
3826 u_char *p;
|
|
|
3827 size_t len;
|
|
|
3828 ngx_uint_t i;
|
|
|
3829 ngx_http_upstream_state_t *state;
|
|
|
3830
|
|
|
3831 v->valid = 1;
|
|
|
3832 v->no_cacheable = 0;
|
|
|
3833 v->not_found = 0;
|
|
|
3834
|
|
|
3835 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3836 v->not_found = 1;
|
|
|
3837 return NGX_OK;
|
|
|
3838 }
|
|
|
3839
|
|
|
3840 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3841
|
|
|
3842 p = ngx_pnalloc(r->pool, len);
|
|
|
3843 if (p == NULL) {
|
|
|
3844 return NGX_ERROR;
|
|
|
3845 }
|
|
|
3846
|
|
|
3847 v->data = p;
|
|
|
3848
|
|
|
3849 i = 0;
|
|
|
3850 state = r->upstream_states->elts;
|
|
|
3851
|
|
|
3852 for ( ;; ) {
|
|
|
3853 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3854
|
|
|
3855 if (++i == r->upstream_states->nelts) {
|
|
|
3856 break;
|
|
|
3857 }
|
|
|
3858
|
|
|
3859 if (state[i].peer) {
|
|
|
3860 *p++ = ',';
|
|
|
3861 *p++ = ' ';
|
|
|
3862
|
|
|
3863 } else {
|
|
|
3864 *p++ = ' ';
|
|
|
3865 *p++ = ':';
|
|
|
3866 *p++ = ' ';
|
|
|
3867
|
|
|
3868 if (++i == r->upstream_states->nelts) {
|
|
|
3869 break;
|
|
|
3870 }
|
|
|
3871
|
|
|
3872 continue;
|
|
|
3873 }
|
|
|
3874 }
|
|
|
3875
|
|
|
3876 v->len = p - v->data;
|
|
|
3877
|
|
|
3878 return NGX_OK;
|
|
|
3879 }
|
|
|
3880
|
|
|
3881
|
|
296
|
3882 ngx_int_t
|
|
|
3883 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3884 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3885 {
|
|
|
3886 if (r->upstream == NULL) {
|
|
|
3887 v->not_found = 1;
|
|
|
3888 return NGX_OK;
|
|
|
3889 }
|
|
|
3890
|
|
|
3891 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3892 &r->upstream->headers_in.headers.part,
|
|
|
3893 sizeof("upstream_http_") - 1);
|
|
|
3894 }
|
|
|
3895
|
|
|
3896
|
|
542
|
3897 #if (NGX_HTTP_CACHE)
|
|
|
3898
|
|
|
3899 ngx_int_t
|
|
|
3900 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
|
3901 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3902 {
|
|
|
3903 ngx_uint_t n;
|
|
|
3904
|
|
|
3905 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
|
3906 v->not_found = 1;
|
|
|
3907 return NGX_OK;
|
|
|
3908 }
|
|
|
3909
|
|
|
3910 n = r->upstream->cache_status - 1;
|
|
|
3911
|
|
|
3912 v->valid = 1;
|
|
|
3913 v->no_cacheable = 0;
|
|
|
3914 v->not_found = 0;
|
|
|
3915 v->len = ngx_http_cache_status[n].len;
|
|
|
3916 v->data = ngx_http_cache_status[n].data;
|
|
|
3917
|
|
|
3918 return NGX_OK;
|
|
|
3919 }
|
|
|
3920
|
|
|
3921 #endif
|
|
|
3922
|
|
|
3923
|
|
200
|
3924 static char *
|
|
|
3925 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3926 {
|
|
260
|
3927 char *rv;
|
|
|
3928 void *mconf;
|
|
|
3929 ngx_str_t *value;
|
|
|
3930 ngx_url_t u;
|
|
|
3931 ngx_uint_t m;
|
|
|
3932 ngx_conf_t pcf;
|
|
|
3933 ngx_http_module_t *module;
|
|
|
3934 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3935 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3936
|
|
|
3937 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3938
|
|
|
3939 value = cf->args->elts;
|
|
|
3940 u.host = value[1];
|
|
|
3941 u.no_resolve = 1;
|
|
|
3942
|
|
|
3943 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3944 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3945 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3946 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3947 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3948 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3949 if (uscf == NULL) {
|
|
|
3950 return NGX_CONF_ERROR;
|
|
|
3951 }
|
|
|
3952
|
|
200
|
3953
|
|
|
3954 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3955 if (ctx == NULL) {
|
|
|
3956 return NGX_CONF_ERROR;
|
|
|
3957 }
|
|
|
3958
|
|
260
|
3959 http_ctx = cf->ctx;
|
|
|
3960 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
3961
|
|
|
3962 /* the upstream{}'s srv_conf */
|
|
|
3963
|
|
|
3964 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3965 if (ctx->srv_conf == NULL) {
|
|
|
3966 return NGX_CONF_ERROR;
|
|
|
3967 }
|
|
|
3968
|
|
|
3969 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
3970
|
|
260
|
3971 uscf->srv_conf = ctx->srv_conf;
|
|
|
3972
|
|
200
|
3973
|
|
|
3974 /* the upstream{}'s loc_conf */
|
|
|
3975
|
|
|
3976 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
3977 if (ctx->loc_conf == NULL) {
|
|
|
3978 return NGX_CONF_ERROR;
|
|
|
3979 }
|
|
|
3980
|
|
|
3981 for (m = 0; ngx_modules[m]; m++) {
|
|
|
3982 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
3983 continue;
|
|
|
3984 }
|
|
|
3985
|
|
|
3986 module = ngx_modules[m]->ctx;
|
|
|
3987
|
|
260
|
3988 if (module->create_srv_conf) {
|
|
|
3989 mconf = module->create_srv_conf(cf);
|
|
|
3990 if (mconf == NULL) {
|
|
|
3991 return NGX_CONF_ERROR;
|
|
|
3992 }
|
|
|
3993
|
|
|
3994 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
3995 }
|
|
|
3996
|
|
200
|
3997 if (module->create_loc_conf) {
|
|
|
3998 mconf = module->create_loc_conf(cf);
|
|
|
3999 if (mconf == NULL) {
|
|
|
4000 return NGX_CONF_ERROR;
|
|
|
4001 }
|
|
|
4002
|
|
|
4003 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
4004 }
|
|
|
4005 }
|
|
|
4006
|
|
|
4007
|
|
|
4008 /* parse inside upstream{} */
|
|
|
4009
|
|
|
4010 pcf = *cf;
|
|
|
4011 cf->ctx = ctx;
|
|
|
4012 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
4013
|
|
|
4014 rv = ngx_conf_parse(cf, NULL);
|
|
|
4015
|
|
|
4016 *cf = pcf;
|
|
|
4017
|
|
|
4018 if (rv != NGX_CONF_OK) {
|
|
|
4019 return rv;
|
|
|
4020 }
|
|
|
4021
|
|
|
4022 if (uscf->servers == NULL) {
|
|
|
4023 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4024 "no servers are inside upstream");
|
|
|
4025 return NGX_CONF_ERROR;
|
|
|
4026 }
|
|
|
4027
|
|
|
4028 return rv;
|
|
|
4029 }
|
|
|
4030
|
|
|
4031
|
|
|
4032 static char *
|
|
|
4033 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
4034 {
|
|
|
4035 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
4036
|
|
260
|
4037 time_t fail_timeout;
|
|
|
4038 ngx_str_t *value, s;
|
|
|
4039 ngx_url_t u;
|
|
|
4040 ngx_int_t weight, max_fails;
|
|
|
4041 ngx_uint_t i;
|
|
|
4042 ngx_http_upstream_server_t *us;
|
|
200
|
4043
|
|
|
4044 if (uscf->servers == NULL) {
|
|
260
|
4045 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
4046 sizeof(ngx_http_upstream_server_t));
|
|
200
|
4047 if (uscf->servers == NULL) {
|
|
|
4048 return NGX_CONF_ERROR;
|
|
|
4049 }
|
|
|
4050 }
|
|
|
4051
|
|
260
|
4052 us = ngx_array_push(uscf->servers);
|
|
|
4053 if (us == NULL) {
|
|
200
|
4054 return NGX_CONF_ERROR;
|
|
|
4055 }
|
|
|
4056
|
|
260
|
4057 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4058
|
|
200
|
4059 value = cf->args->elts;
|
|
|
4060
|
|
|
4061 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
4062
|
|
|
4063 u.url = value[1];
|
|
266
|
4064 u.default_port = 80;
|
|
200
|
4065
|
|
340
|
4066 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
4067 if (u.err) {
|
|
|
4068 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4069 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
4070 }
|
|
|
4071
|
|
|
4072 return NGX_CONF_ERROR;
|
|
|
4073 }
|
|
|
4074
|
|
212
|
4075 weight = 1;
|
|
260
|
4076 max_fails = 1;
|
|
|
4077 fail_timeout = 10;
|
|
|
4078
|
|
|
4079 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
4080
|
|
|
4081 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
4082
|
|
|
4083 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
4084 goto invalid;
|
|
|
4085 }
|
|
|
4086
|
|
|
4087 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
4088
|
|
|
4089 if (weight == NGX_ERROR || weight == 0) {
|
|
|
4090 goto invalid;
|
|
|
4091 }
|
|
|
4092
|
|
260
|
4093 continue;
|
|
|
4094 }
|
|
|
4095
|
|
|
4096 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
4097
|
|
|
4098 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
4099 goto invalid;
|
|
|
4100 }
|
|
|
4101
|
|
|
4102 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
4103
|
|
|
4104 if (max_fails == NGX_ERROR) {
|
|
|
4105 goto invalid;
|
|
|
4106 }
|
|
|
4107
|
|
|
4108 continue;
|
|
212
|
4109 }
|
|
260
|
4110
|
|
|
4111 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
4112
|
|
|
4113 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
4114 goto invalid;
|
|
|
4115 }
|
|
|
4116
|
|
|
4117 s.len = value[i].len - 13;
|
|
|
4118 s.data = &value[i].data[13];
|
|
|
4119
|
|
|
4120 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
4121
|
|
372
|
4122 if (fail_timeout == NGX_ERROR) {
|
|
260
|
4123 goto invalid;
|
|
|
4124 }
|
|
|
4125
|
|
|
4126 continue;
|
|
|
4127 }
|
|
|
4128
|
|
326
|
4129 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
4130
|
|
|
4131 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
4132 goto invalid;
|
|
|
4133 }
|
|
|
4134
|
|
|
4135 us->backup = 1;
|
|
|
4136
|
|
|
4137 continue;
|
|
|
4138 }
|
|
|
4139
|
|
260
|
4140 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
4141
|
|
|
4142 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
4143 goto invalid;
|
|
|
4144 }
|
|
|
4145
|
|
|
4146 us->down = 1;
|
|
|
4147
|
|
|
4148 continue;
|
|
|
4149 }
|
|
|
4150
|
|
|
4151 goto invalid;
|
|
212
|
4152 }
|
|
|
4153
|
|
260
|
4154 us->addrs = u.addrs;
|
|
|
4155 us->naddrs = u.naddrs;
|
|
|
4156 us->weight = weight;
|
|
|
4157 us->max_fails = max_fails;
|
|
|
4158 us->fail_timeout = fail_timeout;
|
|
200
|
4159
|
|
|
4160 return NGX_CONF_OK;
|
|
212
|
4161
|
|
|
4162 invalid:
|
|
|
4163
|
|
260
|
4164 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4165 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
4166
|
|
|
4167 return NGX_CONF_ERROR;
|
|
200
|
4168 }
|
|
|
4169
|
|
|
4170
|
|
|
4171 ngx_http_upstream_srv_conf_t *
|
|
260
|
4172 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
4173 {
|
|
|
4174 ngx_uint_t i;
|
|
260
|
4175 ngx_http_upstream_server_t *us;
|
|
200
|
4176 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
4177 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4178
|
|
260
|
4179 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
4180
|
|
340
|
4181 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
4182 if (u->err) {
|
|
|
4183 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4184 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
4185 }
|
|
|
4186
|
|
|
4187 return NULL;
|
|
|
4188 }
|
|
|
4189 }
|
|
|
4190
|
|
|
4191 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
4192
|
|
|
4193 uscfp = umcf->upstreams.elts;
|
|
|
4194
|
|
|
4195 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
4196
|
|
|
4197 if (uscfp[i]->host.len != u->host.len
|
|
260
|
4198 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
4199 != 0)
|
|
|
4200 {
|
|
200
|
4201 continue;
|
|
|
4202 }
|
|
|
4203
|
|
260
|
4204 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
4205 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
4206 {
|
|
260
|
4207 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4208 "duplicate upstream \"%V\"", &u->host);
|
|
|
4209 return NULL;
|
|
200
|
4210 }
|
|
260
|
4211
|
|
266
|
4212 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
4213 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
4214 "upstream \"%V\" may not have port %d",
|
|
|
4215 &u->host, u->port);
|
|
|
4216 return NULL;
|
|
|
4217 }
|
|
|
4218
|
|
|
4219 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
4220 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
4221 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
4222 &u->host, uscfp[i]->port,
|
|
336
|
4223 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
4224 return NULL;
|
|
|
4225 }
|
|
|
4226
|
|
|
4227 if (uscfp[i]->port != u->port) {
|
|
|
4228 continue;
|
|
260
|
4229 }
|
|
|
4230
|
|
324
|
4231 if (uscfp[i]->default_port && u->default_port
|
|
|
4232 && uscfp[i]->default_port != u->default_port)
|
|
|
4233 {
|
|
|
4234 continue;
|
|
|
4235 }
|
|
|
4236
|
|
260
|
4237 return uscfp[i];
|
|
200
|
4238 }
|
|
|
4239
|
|
|
4240 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
4241 if (uscf == NULL) {
|
|
|
4242 return NULL;
|
|
|
4243 }
|
|
|
4244
|
|
260
|
4245 uscf->flags = flags;
|
|
200
|
4246 uscf->host = u->host;
|
|
336
|
4247 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
4248 uscf->line = cf->conf_file->line;
|
|
266
|
4249 uscf->port = u->port;
|
|
|
4250 uscf->default_port = u->default_port;
|
|
260
|
4251
|
|
|
4252 if (u->naddrs == 1) {
|
|
|
4253 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
4254 sizeof(ngx_http_upstream_server_t));
|
|
|
4255 if (uscf->servers == NULL) {
|
|
|
4256 return NGX_CONF_ERROR;
|
|
|
4257 }
|
|
|
4258
|
|
|
4259 us = ngx_array_push(uscf->servers);
|
|
|
4260 if (us == NULL) {
|
|
|
4261 return NGX_CONF_ERROR;
|
|
|
4262 }
|
|
|
4263
|
|
|
4264 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4265
|
|
|
4266 us->addrs = u->addrs;
|
|
|
4267 us->naddrs = u->naddrs;
|
|
|
4268 }
|
|
200
|
4269
|
|
|
4270 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
4271 if (uscfp == NULL) {
|
|
|
4272 return NULL;
|
|
|
4273 }
|
|
|
4274
|
|
|
4275 *uscfp = uscf;
|
|
|
4276
|
|
|
4277 return uscf;
|
|
|
4278 }
|
|
|
4279
|
|
|
4280
|
|
583
|
4281 char *
|
|
601
|
4282 ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
583
|
4283 void *conf)
|
|
|
4284 {
|
|
|
4285 char *p = conf;
|
|
|
4286
|
|
|
4287 ngx_int_t rc;
|
|
|
4288 ngx_str_t *value;
|
|
|
4289 ngx_addr_t **paddr;
|
|
|
4290
|
|
|
4291 paddr = (ngx_addr_t **) (p + cmd->offset);
|
|
|
4292
|
|
|
4293 *paddr = ngx_palloc(cf->pool, sizeof(ngx_addr_t));
|
|
|
4294 if (*paddr == NULL) {
|
|
|
4295 return NGX_CONF_ERROR;
|
|
|
4296 }
|
|
|
4297
|
|
|
4298 value = cf->args->elts;
|
|
|
4299
|
|
|
4300 rc = ngx_parse_addr(cf->pool, *paddr, value[1].data, value[1].len);
|
|
|
4301
|
|
|
4302 switch (rc) {
|
|
|
4303 case NGX_OK:
|
|
|
4304 (*paddr)->name = value[1];
|
|
|
4305 return NGX_CONF_OK;
|
|
|
4306
|
|
|
4307 case NGX_DECLINED:
|
|
|
4308 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4309 "invalid address \"%V\"", &value[1]);
|
|
|
4310 default:
|
|
|
4311 return NGX_CONF_ERROR;
|
|
|
4312 }
|
|
|
4313 }
|
|
|
4314
|
|
|
4315
|
|
356
|
4316 ngx_int_t
|
|
|
4317 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
4318 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
4319 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
4320 {
|
|
|
4321 ngx_str_t *h;
|
|
|
4322 ngx_uint_t i, j;
|
|
|
4323 ngx_array_t hide_headers;
|
|
|
4324 ngx_hash_key_t *hk;
|
|
|
4325
|
|
|
4326 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
4327 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
4328 {
|
|
|
4329 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
4330
|
|
538
|
4331 if (conf->hide_headers_hash.buckets
|
|
542
|
4332 #if (NGX_HTTP_CACHE)
|
|
|
4333 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
|
4334 #endif
|
|
|
4335 )
|
|
538
|
4336 {
|
|
356
|
4337 return NGX_OK;
|
|
|
4338 }
|
|
|
4339
|
|
|
4340 conf->hide_headers = prev->hide_headers;
|
|
|
4341 conf->pass_headers = prev->pass_headers;
|
|
|
4342
|
|
|
4343 } else {
|
|
|
4344 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4345 conf->hide_headers = prev->hide_headers;
|
|
|
4346 }
|
|
|
4347
|
|
|
4348 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4349 conf->pass_headers = prev->pass_headers;
|
|
|
4350 }
|
|
|
4351 }
|
|
|
4352
|
|
|
4353 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
4354 != NGX_OK)
|
|
|
4355 {
|
|
|
4356 return NGX_ERROR;
|
|
|
4357 }
|
|
|
4358
|
|
|
4359 for (h = default_hide_headers; h->len; h++) {
|
|
|
4360 hk = ngx_array_push(&hide_headers);
|
|
|
4361 if (hk == NULL) {
|
|
|
4362 return NGX_ERROR;
|
|
|
4363 }
|
|
|
4364
|
|
|
4365 hk->key = *h;
|
|
|
4366 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
4367 hk->value = (void *) 1;
|
|
|
4368 }
|
|
|
4369
|
|
|
4370 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4371
|
|
|
4372 h = conf->hide_headers->elts;
|
|
|
4373
|
|
|
4374 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
4375
|
|
|
4376 hk = hide_headers.elts;
|
|
|
4377
|
|
|
4378 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4379 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4380 goto exist;
|
|
|
4381 }
|
|
|
4382 }
|
|
|
4383
|
|
|
4384 hk = ngx_array_push(&hide_headers);
|
|
|
4385 if (hk == NULL) {
|
|
|
4386 return NGX_ERROR;
|
|
|
4387 }
|
|
|
4388
|
|
|
4389 hk->key = h[i];
|
|
|
4390 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
4391 hk->value = (void *) 1;
|
|
|
4392
|
|
|
4393 exist:
|
|
|
4394
|
|
|
4395 continue;
|
|
|
4396 }
|
|
|
4397 }
|
|
|
4398
|
|
|
4399 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4400
|
|
|
4401 h = conf->pass_headers->elts;
|
|
|
4402 hk = hide_headers.elts;
|
|
|
4403
|
|
|
4404 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
4405 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4406
|
|
|
4407 if (hk[j].key.data == NULL) {
|
|
|
4408 continue;
|
|
|
4409 }
|
|
|
4410
|
|
|
4411 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4412 hk[j].key.data = NULL;
|
|
|
4413 break;
|
|
|
4414 }
|
|
|
4415 }
|
|
|
4416 }
|
|
|
4417 }
|
|
|
4418
|
|
|
4419 hash->hash = &conf->hide_headers_hash;
|
|
|
4420 hash->key = ngx_hash_key_lc;
|
|
|
4421 hash->pool = cf->pool;
|
|
|
4422 hash->temp_pool = NULL;
|
|
|
4423
|
|
|
4424 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
4425 }
|
|
|
4426
|
|
|
4427
|
|
58
|
4428 static void *
|
|
|
4429 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
4430 {
|
|
|
4431 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4432
|
|
|
4433 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
4434 if (umcf == NULL) {
|
|
|
4435 return NULL;
|
|
|
4436 }
|
|
|
4437
|
|
200
|
4438 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
4439 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
4440 != NGX_OK)
|
|
|
4441 {
|
|
536
|
4442 return NULL;
|
|
200
|
4443 }
|
|
|
4444
|
|
58
|
4445 return umcf;
|
|
|
4446 }
|
|
|
4447
|
|
|
4448
|
|
|
4449 static char *
|
|
200
|
4450 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
4451 {
|
|
|
4452 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
4453
|
|
200
|
4454 ngx_uint_t i;
|
|
|
4455 ngx_array_t headers_in;
|
|
|
4456 ngx_hash_key_t *hk;
|
|
|
4457 ngx_hash_init_t hash;
|
|
260
|
4458 ngx_http_upstream_init_pt init;
|
|
200
|
4459 ngx_http_upstream_header_t *header;
|
|
|
4460 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
4461
|
|
|
4462 uscfp = umcf->upstreams.elts;
|
|
|
4463
|
|
|
4464 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
4465
|
|
|
4466 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
4467 ngx_http_upstream_init_round_robin;
|
|
|
4468
|
|
|
4469 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
4470 return NGX_CONF_ERROR;
|
|
|
4471 }
|
|
|
4472 }
|
|
198
|
4473
|
|
212
|
4474
|
|
260
|
4475 /* upstream_headers_in_hash */
|
|
|
4476
|
|
198
|
4477 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
4478 != NGX_OK)
|
|
58
|
4479 {
|
|
|
4480 return NGX_CONF_ERROR;
|
|
|
4481 }
|
|
|
4482
|
|
198
|
4483 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
4484 hk = ngx_array_push(&headers_in);
|
|
|
4485 if (hk == NULL) {
|
|
|
4486 return NGX_CONF_ERROR;
|
|
|
4487 }
|
|
|
4488
|
|
|
4489 hk->key = header->name;
|
|
|
4490 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
4491 hk->value = header;
|
|
|
4492 }
|
|
|
4493
|
|
|
4494 hash.hash = &umcf->headers_in_hash;
|
|
|
4495 hash.key = ngx_hash_key_lc;
|
|
|
4496 hash.max_size = 512;
|
|
244
|
4497 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
4498 hash.name = "upstream_headers_in_hash";
|
|
|
4499 hash.pool = cf->pool;
|
|
|
4500 hash.temp_pool = NULL;
|
|
|
4501
|
|
|
4502 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
4503 return NGX_CONF_ERROR;
|
|
|
4504 }
|
|
58
|
4505
|
|
|
4506 return NGX_CONF_OK;
|
|
|
4507 }
|
