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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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644
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4 * Copyright (C) Nginx, Inc.
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28
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5 */
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6
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7
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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10 #include <ngx_http.h>
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11
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12
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464
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13 #if (NGX_HTTP_CACHE)
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14 static ngx_int_t ngx_http_upstream_cache(ngx_http_request_t *r,
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15 ngx_http_upstream_t *u);
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16 static ngx_int_t ngx_http_upstream_cache_send(ngx_http_request_t *r,
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17 ngx_http_upstream_t *u);
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502
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18 static ngx_int_t ngx_http_upstream_cache_status(ngx_http_request_t *r,
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19 ngx_http_variable_value_t *v, uintptr_t data);
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464
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20 #endif
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21
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518
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22 static void ngx_http_upstream_init_request(ngx_http_request_t *r);
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348
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23 static void ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx);
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58
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24 static void ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r);
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25 static void ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r);
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26 static void ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
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27 ngx_event_t *ev);
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28
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28 static void ngx_http_upstream_connect(ngx_http_request_t *r,
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36
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29 ngx_http_upstream_t *u);
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58
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30 static ngx_int_t ngx_http_upstream_reinit(ngx_http_request_t *r,
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36
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31 ngx_http_upstream_t *u);
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28
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32 static void ngx_http_upstream_send_request(ngx_http_request_t *r,
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36
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33 ngx_http_upstream_t *u);
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430
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34 static void ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
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35 ngx_http_upstream_t *u);
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36 static void ngx_http_upstream_process_header(ngx_http_request_t *r,
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37 ngx_http_upstream_t *u);
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412
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38 static ngx_int_t ngx_http_upstream_test_next(ngx_http_request_t *r,
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39 ngx_http_upstream_t *u);
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40 static ngx_int_t ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
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41 ngx_http_upstream_t *u);
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294
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42 static ngx_int_t ngx_http_upstream_test_connect(ngx_connection_t *c);
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464
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43 static ngx_int_t ngx_http_upstream_process_headers(ngx_http_request_t *r,
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44 ngx_http_upstream_t *u);
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430
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45 static void ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
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46 ngx_http_upstream_t *u);
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28
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47 static void ngx_http_upstream_send_response(ngx_http_request_t *r,
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36
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48 ngx_http_upstream_t *u);
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130
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49 static void
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50 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r);
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430
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51 static void
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52 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
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53 ngx_http_upstream_t *u);
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428
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54 static void
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55 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
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56 ngx_uint_t do_write);
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130
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57 static ngx_int_t ngx_http_upstream_non_buffered_filter_init(void *data);
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58 static ngx_int_t ngx_http_upstream_non_buffered_filter(void *data,
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59 ssize_t bytes);
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58
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60 static void ngx_http_upstream_process_downstream(ngx_http_request_t *r);
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430
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61 static void ngx_http_upstream_process_upstream(ngx_http_request_t *r,
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62 ngx_http_upstream_t *u);
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428
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63 static void ngx_http_upstream_process_request(ngx_http_request_t *r);
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318
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64 static void ngx_http_upstream_store(ngx_http_request_t *r,
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65 ngx_http_upstream_t *u);
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430
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66 static void ngx_http_upstream_dummy_handler(ngx_http_request_t *r,
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67 ngx_http_upstream_t *u);
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28
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68 static void ngx_http_upstream_next(ngx_http_request_t *r,
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36
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69 ngx_http_upstream_t *u, ngx_uint_t ft_type);
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118
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70 static void ngx_http_upstream_cleanup(void *data);
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28
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71 static void ngx_http_upstream_finalize_request(ngx_http_request_t *r,
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72 ngx_http_upstream_t *u, ngx_int_t rc);
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28
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73
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58
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74 static ngx_int_t ngx_http_upstream_process_header_line(ngx_http_request_t *r,
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75 ngx_table_elt_t *h, ngx_uint_t offset);
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584
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76 static ngx_int_t ngx_http_upstream_process_set_cookie(ngx_http_request_t *r,
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77 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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78 static ngx_int_t
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472
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79 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
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58
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80 ngx_table_elt_t *h, ngx_uint_t offset);
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81 static ngx_int_t ngx_http_upstream_ignore_header_line(ngx_http_request_t *r,
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82 ngx_table_elt_t *h, ngx_uint_t offset);
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472
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83 static ngx_int_t ngx_http_upstream_process_expires(ngx_http_request_t *r,
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84 ngx_table_elt_t *h, ngx_uint_t offset);
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85 static ngx_int_t ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
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86 ngx_table_elt_t *h, ngx_uint_t offset);
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76
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87 static ngx_int_t ngx_http_upstream_process_limit_rate(ngx_http_request_t *r,
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88 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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89 static ngx_int_t ngx_http_upstream_process_buffering(ngx_http_request_t *r,
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58
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90 ngx_table_elt_t *h, ngx_uint_t offset);
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206
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91 static ngx_int_t ngx_http_upstream_process_charset(ngx_http_request_t *r,
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92 ngx_table_elt_t *h, ngx_uint_t offset);
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198
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93 static ngx_int_t ngx_http_upstream_copy_header_line(ngx_http_request_t *r,
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58
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94 ngx_table_elt_t *h, ngx_uint_t offset);
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95 static ngx_int_t
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96 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
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97 ngx_table_elt_t *h, ngx_uint_t offset);
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98 static ngx_int_t ngx_http_upstream_copy_content_type(ngx_http_request_t *r,
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99 ngx_table_elt_t *h, ngx_uint_t offset);
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100 static ngx_int_t ngx_http_upstream_copy_content_length(ngx_http_request_t *r,
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101 ngx_table_elt_t *h, ngx_uint_t offset);
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464
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102 static ngx_int_t ngx_http_upstream_copy_last_modified(ngx_http_request_t *r,
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103 ngx_table_elt_t *h, ngx_uint_t offset);
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58
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104 static ngx_int_t ngx_http_upstream_rewrite_location(ngx_http_request_t *r,
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105 ngx_table_elt_t *h, ngx_uint_t offset);
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106 static ngx_int_t ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r,
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107 ngx_table_elt_t *h, ngx_uint_t offset);
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464
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108 static ngx_int_t ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
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109 ngx_table_elt_t *h, ngx_uint_t offset);
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110
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58
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111 #if (NGX_HTTP_GZIP)
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112 static ngx_int_t ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
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113 ngx_table_elt_t *h, ngx_uint_t offset);
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114 #endif
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115
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122
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116 static ngx_int_t ngx_http_upstream_add_variables(ngx_conf_t *cf);
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298
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117 static ngx_int_t ngx_http_upstream_addr_variable(ngx_http_request_t *r,
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118 ngx_http_variable_value_t *v, uintptr_t data);
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122
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119 static ngx_int_t ngx_http_upstream_status_variable(ngx_http_request_t *r,
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120 ngx_http_variable_value_t *v, uintptr_t data);
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121 static ngx_int_t ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
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122 ngx_http_variable_value_t *v, uintptr_t data);
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430
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123 static ngx_int_t ngx_http_upstream_response_length_variable(
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124 ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data);
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122
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125
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200
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126 static char *ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy);
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127 static char *ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd,
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128 void *conf);
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129
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58
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130 static void *ngx_http_upstream_create_main_conf(ngx_conf_t *cf);
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200
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131 static char *ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf);
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58
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132
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126
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133 #if (NGX_HTTP_SSL)
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140
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134 static void ngx_http_upstream_ssl_init_connection(ngx_http_request_t *,
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135 ngx_http_upstream_t *u, ngx_connection_t *c);
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126
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136 static void ngx_http_upstream_ssl_handshake(ngx_connection_t *c);
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137 #endif
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138
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58
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139
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140 ngx_http_upstream_header_t ngx_http_upstream_headers_in[] = {
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141
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142 { ngx_string("Status"),
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143 ngx_http_upstream_process_header_line,
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144 offsetof(ngx_http_upstream_headers_in_t, status),
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198
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145 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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146
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147 { ngx_string("Content-Type"),
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148 ngx_http_upstream_process_header_line,
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149 offsetof(ngx_http_upstream_headers_in_t, content_type),
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222
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150 ngx_http_upstream_copy_content_type, 0, 1 },
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58
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151
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152 { ngx_string("Content-Length"),
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153 ngx_http_upstream_process_header_line,
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154 offsetof(ngx_http_upstream_headers_in_t, content_length),
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64
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155 ngx_http_upstream_copy_content_length, 0, 0 },
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58
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156
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157 { ngx_string("Date"),
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158 ngx_http_upstream_process_header_line,
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159 offsetof(ngx_http_upstream_headers_in_t, date),
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198
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160 ngx_http_upstream_copy_header_line,
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161 offsetof(ngx_http_headers_out_t, date), 0 },
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58
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162
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318
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163 { ngx_string("Last-Modified"),
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164 ngx_http_upstream_process_header_line,
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165 offsetof(ngx_http_upstream_headers_in_t, last_modified),
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464
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166 ngx_http_upstream_copy_last_modified, 0, 0 },
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318
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167
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516
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168 { ngx_string("ETag"),
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169 ngx_http_upstream_process_header_line,
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170 offsetof(ngx_http_upstream_headers_in_t, etag),
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171 ngx_http_upstream_copy_header_line,
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172 offsetof(ngx_http_headers_out_t, etag), 0 },
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173
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58
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174 { ngx_string("Server"),
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175 ngx_http_upstream_process_header_line,
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176 offsetof(ngx_http_upstream_headers_in_t, server),
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198
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177 ngx_http_upstream_copy_header_line,
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178 offsetof(ngx_http_headers_out_t, server), 0 },
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58
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179
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78
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180 { ngx_string("WWW-Authenticate"),
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181 ngx_http_upstream_process_header_line,
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182 offsetof(ngx_http_upstream_headers_in_t, www_authenticate),
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183 ngx_http_upstream_copy_header_line, 0, 0 },
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184
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58
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185 { ngx_string("Location"),
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392
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186 ngx_http_upstream_process_header_line,
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187 offsetof(ngx_http_upstream_headers_in_t, location),
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64
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188 ngx_http_upstream_rewrite_location, 0, 0 },
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58
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189
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190 { ngx_string("Refresh"),
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191 ngx_http_upstream_ignore_header_line, 0,
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64
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192 ngx_http_upstream_rewrite_refresh, 0, 0 },
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193
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194 { ngx_string("Set-Cookie"),
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584
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195 ngx_http_upstream_process_set_cookie, 0,
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80
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196 ngx_http_upstream_copy_header_line, 0, 1 },
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197
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198 { ngx_string("Content-Disposition"),
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199 ngx_http_upstream_ignore_header_line, 0,
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200 ngx_http_upstream_copy_header_line, 0, 1 },
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58
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201
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202 { ngx_string("Cache-Control"),
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472
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203 ngx_http_upstream_process_cache_control, 0,
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58
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204 ngx_http_upstream_copy_multi_header_lines,
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64
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205 offsetof(ngx_http_headers_out_t, cache_control), 1 },
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58
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206
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122
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207 { ngx_string("Expires"),
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472
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208 ngx_http_upstream_process_expires, 0,
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122
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209 ngx_http_upstream_copy_header_line,
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210 offsetof(ngx_http_headers_out_t, expires), 1 },
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211
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126
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212 { ngx_string("Accept-Ranges"),
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213 ngx_http_upstream_process_header_line,
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214 offsetof(ngx_http_upstream_headers_in_t, accept_ranges),
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464
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215 ngx_http_upstream_copy_allow_ranges,
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126
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216 offsetof(ngx_http_headers_out_t, accept_ranges), 1 },
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217
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58
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218 { ngx_string("Connection"),
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219 ngx_http_upstream_ignore_header_line, 0,
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64
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220 ngx_http_upstream_ignore_header_line, 0, 0 },
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58
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221
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190
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222 { ngx_string("Keep-Alive"),
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223 ngx_http_upstream_ignore_header_line, 0,
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224 ngx_http_upstream_ignore_header_line, 0, 0 },
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225
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58
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226 { ngx_string("X-Powered-By"),
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227 ngx_http_upstream_ignore_header_line, 0,
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198
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228 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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229
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230 { ngx_string("X-Accel-Expires"),
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472
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231 ngx_http_upstream_process_accel_expires, 0,
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198
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232 ngx_http_upstream_copy_header_line, 0, 0 },
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64
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233
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234 { ngx_string("X-Accel-Redirect"),
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235 ngx_http_upstream_process_header_line,
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236 offsetof(ngx_http_upstream_headers_in_t, x_accel_redirect),
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510
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237 ngx_http_upstream_copy_header_line, 0, 0 },
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58
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238
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76
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239 { ngx_string("X-Accel-Limit-Rate"),
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240 ngx_http_upstream_process_limit_rate, 0,
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510
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241 ngx_http_upstream_copy_header_line, 0, 0 },
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76
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242
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198
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243 { ngx_string("X-Accel-Buffering"),
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244 ngx_http_upstream_process_buffering, 0,
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510
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245 ngx_http_upstream_copy_header_line, 0, 0 },
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198
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246
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206
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247 { ngx_string("X-Accel-Charset"),
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248 ngx_http_upstream_process_charset, 0,
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510
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249 ngx_http_upstream_copy_header_line, 0, 0 },
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206
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250
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58
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251 #if (NGX_HTTP_GZIP)
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252 { ngx_string("Content-Encoding"),
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253 ngx_http_upstream_process_header_line,
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254 offsetof(ngx_http_upstream_headers_in_t, content_encoding),
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64
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255 ngx_http_upstream_copy_content_encoding, 0, 0 },
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58
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256 #endif
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257
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64
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258 { ngx_null_string, NULL, 0, NULL, 0, 0 }
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58
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259 };
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28
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260
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261
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200
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262 static ngx_command_t ngx_http_upstream_commands[] = {
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263
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264 { ngx_string("upstream"),
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265 NGX_HTTP_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_TAKE1,
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266 ngx_http_upstream,
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267 0,
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268 0,
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269 NULL },
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270
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271 { ngx_string("server"),
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260
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272 NGX_HTTP_UPS_CONF|NGX_CONF_1MORE,
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200
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273 ngx_http_upstream_server,
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274 NGX_HTTP_SRV_CONF_OFFSET,
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275 0,
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276 NULL },
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277
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278 ngx_null_command
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279 };
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280
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281
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282 static ngx_http_module_t ngx_http_upstream_module_ctx = {
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122
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283 ngx_http_upstream_add_variables, /* preconfiguration */
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58
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284 NULL, /* postconfiguration */
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285
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286 ngx_http_upstream_create_main_conf, /* create main configuration */
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200
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287 ngx_http_upstream_init_main_conf, /* init main configuration */
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28
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288
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289 NULL, /* create server configuration */
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290 NULL, /* merge server configuration */
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291
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292 NULL, /* create location configuration */
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293 NULL /* merge location configuration */
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294 };
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126
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295
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28
|
296
|
|
|
297 ngx_module_t ngx_http_upstream_module = {
|
|
58
|
298 NGX_MODULE_V1,
|
|
28
|
299 &ngx_http_upstream_module_ctx, /* module context */
|
|
200
|
300 ngx_http_upstream_commands, /* module directives */
|
|
28
|
301 NGX_HTTP_MODULE, /* module type */
|
|
90
|
302 NULL, /* init master */
|
|
28
|
303 NULL, /* init module */
|
|
90
|
304 NULL, /* init process */
|
|
|
305 NULL, /* init thread */
|
|
|
306 NULL, /* exit thread */
|
|
|
307 NULL, /* exit process */
|
|
|
308 NULL, /* exit master */
|
|
|
309 NGX_MODULE_V1_PADDING
|
|
28
|
310 };
|
|
|
311
|
|
|
312
|
|
122
|
313 static ngx_http_variable_t ngx_http_upstream_vars[] = {
|
|
|
314
|
|
298
|
315 { ngx_string("upstream_addr"), NULL,
|
|
426
|
316 ngx_http_upstream_addr_variable, 0,
|
|
622
|
317 NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
298
|
318
|
|
186
|
319 { ngx_string("upstream_status"), NULL,
|
|
426
|
320 ngx_http_upstream_status_variable, 0,
|
|
622
|
321 NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
322
|
|
186
|
323 { ngx_string("upstream_response_time"), NULL,
|
|
426
|
324 ngx_http_upstream_response_time_variable, 0,
|
|
622
|
325 NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
122
|
326
|
|
430
|
327 { ngx_string("upstream_response_length"), NULL,
|
|
|
328 ngx_http_upstream_response_length_variable, 0,
|
|
622
|
329 NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
430
|
330
|
|
504
|
331 #if (NGX_HTTP_CACHE)
|
|
|
332
|
|
502
|
333 { ngx_string("upstream_cache_status"), NULL,
|
|
|
334 ngx_http_upstream_cache_status, 0,
|
|
622
|
335 NGX_HTTP_VAR_NOCACHEABLE, 0 },
|
|
502
|
336
|
|
504
|
337 #endif
|
|
|
338
|
|
186
|
339 { ngx_null_string, NULL, NULL, 0, 0, 0 }
|
|
122
|
340 };
|
|
|
341
|
|
|
342
|
|
412
|
343 static ngx_http_upstream_next_t ngx_http_upstream_next_errors[] = {
|
|
|
344 { 500, NGX_HTTP_UPSTREAM_FT_HTTP_500 },
|
|
|
345 { 502, NGX_HTTP_UPSTREAM_FT_HTTP_502 },
|
|
|
346 { 503, NGX_HTTP_UPSTREAM_FT_HTTP_503 },
|
|
|
347 { 504, NGX_HTTP_UPSTREAM_FT_HTTP_504 },
|
|
|
348 { 404, NGX_HTTP_UPSTREAM_FT_HTTP_404 },
|
|
|
349 { 0, 0 }
|
|
|
350 };
|
|
|
351
|
|
494
|
352
|
|
|
353 ngx_conf_bitmask_t ngx_http_upstream_cache_method_mask[] = {
|
|
|
354 { ngx_string("GET"), NGX_HTTP_GET},
|
|
|
355 { ngx_string("HEAD"), NGX_HTTP_HEAD },
|
|
|
356 { ngx_string("POST"), NGX_HTTP_POST },
|
|
|
357 { ngx_null_string, 0 }
|
|
|
358 };
|
|
|
359
|
|
|
360
|
|
584
|
361 ngx_conf_bitmask_t ngx_http_upstream_ignore_headers_masks[] = {
|
|
|
362 { ngx_string("X-Accel-Redirect"), NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT },
|
|
|
363 { ngx_string("X-Accel-Expires"), NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES },
|
|
638
|
364 { ngx_string("X-Accel-Limit-Rate"), NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE },
|
|
|
365 { ngx_string("X-Accel-Buffering"), NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING },
|
|
|
366 { ngx_string("X-Accel-Charset"), NGX_HTTP_UPSTREAM_IGN_XA_CHARSET },
|
|
584
|
367 { ngx_string("Expires"), NGX_HTTP_UPSTREAM_IGN_EXPIRES },
|
|
|
368 { ngx_string("Cache-Control"), NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL },
|
|
|
369 { ngx_string("Set-Cookie"), NGX_HTTP_UPSTREAM_IGN_SET_COOKIE },
|
|
|
370 { ngx_null_string, 0 }
|
|
|
371 };
|
|
|
372
|
|
|
373
|
|
510
|
374 ngx_int_t
|
|
|
375 ngx_http_upstream_create(ngx_http_request_t *r)
|
|
|
376 {
|
|
|
377 ngx_http_upstream_t *u;
|
|
|
378
|
|
|
379 u = r->upstream;
|
|
|
380
|
|
|
381 if (u && u->cleanup) {
|
|
526
|
382 r->main->count++;
|
|
510
|
383 ngx_http_upstream_cleanup(r);
|
|
|
384 }
|
|
|
385
|
|
|
386 u = ngx_pcalloc(r->pool, sizeof(ngx_http_upstream_t));
|
|
|
387 if (u == NULL) {
|
|
|
388 return NGX_ERROR;
|
|
|
389 }
|
|
|
390
|
|
|
391 r->upstream = u;
|
|
|
392
|
|
|
393 u->peer.log = r->connection->log;
|
|
|
394 u->peer.log_error = NGX_ERROR_ERR;
|
|
|
395 #if (NGX_THREADS)
|
|
|
396 u->peer.lock = &r->connection->lock;
|
|
|
397 #endif
|
|
|
398
|
|
518
|
399 #if (NGX_HTTP_CACHE)
|
|
|
400 r->cache = NULL;
|
|
|
401 #endif
|
|
|
402
|
|
510
|
403 return NGX_OK;
|
|
|
404 }
|
|
|
405
|
|
|
406
|
|
36
|
407 void
|
|
|
408 ngx_http_upstream_init(ngx_http_request_t *r)
|
|
28
|
409 {
|
|
518
|
410 ngx_connection_t *c;
|
|
28
|
411
|
|
|
412 c = r->connection;
|
|
|
413
|
|
|
414 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
415 "http init upstream, client timer: %d", c->read->timer_set);
|
|
|
416
|
|
|
417 if (c->read->timer_set) {
|
|
|
418 ngx_del_timer(c->read);
|
|
|
419 }
|
|
|
420
|
|
|
421 if (ngx_event_flags & NGX_USE_CLEAR_EVENT) {
|
|
|
422
|
|
|
423 if (!c->write->active) {
|
|
80
|
424 if (ngx_add_event(c->write, NGX_WRITE_EVENT, NGX_CLEAR_EVENT)
|
|
|
425 == NGX_ERROR)
|
|
28
|
426 {
|
|
|
427 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
428 return;
|
|
|
429 }
|
|
|
430 }
|
|
|
431 }
|
|
|
432
|
|
518
|
433 ngx_http_upstream_init_request(r);
|
|
|
434 }
|
|
|
435
|
|
|
436
|
|
|
437 static void
|
|
|
438 ngx_http_upstream_init_request(ngx_http_request_t *r)
|
|
|
439 {
|
|
|
440 ngx_str_t *host;
|
|
|
441 ngx_uint_t i;
|
|
|
442 ngx_resolver_ctx_t *ctx, temp;
|
|
|
443 ngx_http_cleanup_t *cln;
|
|
|
444 ngx_http_upstream_t *u;
|
|
|
445 ngx_http_core_loc_conf_t *clcf;
|
|
|
446 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
447 ngx_http_upstream_main_conf_t *umcf;
|
|
|
448
|
|
|
449 if (r->aio) {
|
|
|
450 return;
|
|
86
|
451 }
|
|
58
|
452
|
|
518
|
453 u = r->upstream;
|
|
|
454
|
|
464
|
455 #if (NGX_HTTP_CACHE)
|
|
|
456
|
|
|
457 if (u->conf->cache) {
|
|
|
458 ngx_int_t rc;
|
|
|
459
|
|
|
460 rc = ngx_http_upstream_cache(r, u);
|
|
|
461
|
|
518
|
462 if (rc == NGX_BUSY) {
|
|
|
463 r->write_event_handler = ngx_http_upstream_init_request;
|
|
|
464 return;
|
|
|
465 }
|
|
|
466
|
|
|
467 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
468
|
|
464
|
469 if (rc == NGX_DONE) {
|
|
|
470 return;
|
|
|
471 }
|
|
|
472
|
|
|
473 if (rc != NGX_DECLINED) {
|
|
|
474 ngx_http_finalize_request(r, rc);
|
|
|
475 return;
|
|
|
476 }
|
|
|
477 }
|
|
|
478
|
|
|
479 #endif
|
|
|
480
|
|
518
|
481 u->store = (u->conf->store || u->conf->store_lengths);
|
|
|
482
|
|
|
483 if (!u->store && !r->post_action && !u->conf->ignore_client_abort) {
|
|
|
484 r->read_event_handler = ngx_http_upstream_rd_check_broken_connection;
|
|
|
485 r->write_event_handler = ngx_http_upstream_wr_check_broken_connection;
|
|
|
486 }
|
|
|
487
|
|
|
488 if (r->request_body) {
|
|
|
489 u->request_bufs = r->request_body->bufs;
|
|
|
490 }
|
|
|
491
|
|
86
|
492 if (u->create_request(r) != NGX_OK) {
|
|
28
|
493 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
494 return;
|
|
|
495 }
|
|
|
496
|
|
540
|
497 u->peer.local = u->conf->local;
|
|
|
498
|
|
58
|
499 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
28
|
500
|
|
518
|
501 u->output.alignment = clcf->directio_alignment;
|
|
28
|
502 u->output.pool = r->pool;
|
|
|
503 u->output.bufs.num = 1;
|
|
58
|
504 u->output.bufs.size = clcf->client_body_buffer_size;
|
|
28
|
505 u->output.output_filter = ngx_chain_writer;
|
|
|
506 u->output.filter_ctx = &u->writer;
|
|
|
507
|
|
|
508 u->writer.pool = r->pool;
|
|
|
509
|
|
296
|
510 if (r->upstream_states == NULL) {
|
|
|
511
|
|
|
512 r->upstream_states = ngx_array_create(r->pool, 1,
|
|
|
513 sizeof(ngx_http_upstream_state_t));
|
|
|
514 if (r->upstream_states == NULL) {
|
|
|
515 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
516 return;
|
|
|
517 }
|
|
|
518
|
|
|
519 } else {
|
|
|
520
|
|
|
521 u->state = ngx_array_push(r->upstream_states);
|
|
|
522 if (u->state == NULL) {
|
|
|
523 ngx_http_upstream_finalize_request(r, u,
|
|
|
524 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
525 return;
|
|
|
526 }
|
|
|
527
|
|
|
528 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
28
|
529 }
|
|
|
530
|
|
142
|
531 cln = ngx_http_cleanup_add(r, 0);
|
|
118
|
532 if (cln == NULL) {
|
|
|
533 ngx_http_finalize_request(r, NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
534 return;
|
|
|
535 }
|
|
|
536
|
|
|
537 cln->handler = ngx_http_upstream_cleanup;
|
|
|
538 cln->data = r;
|
|
|
539 u->cleanup = &cln->handler;
|
|
|
540
|
|
348
|
541 if (u->resolved == NULL) {
|
|
|
542
|
|
|
543 uscf = u->conf->upstream;
|
|
|
544
|
|
|
545 } else {
|
|
|
546
|
|
434
|
547 if (u->resolved->sockaddr) {
|
|
|
548
|
|
|
549 if (ngx_http_upstream_create_round_robin_peer(r, u->resolved)
|
|
|
550 != NGX_OK)
|
|
|
551 {
|
|
530
|
552 ngx_http_upstream_finalize_request(r, u,
|
|
|
553 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
434
|
554 return;
|
|
|
555 }
|
|
|
556
|
|
|
557 ngx_http_upstream_connect(r, u);
|
|
|
558
|
|
|
559 return;
|
|
|
560 }
|
|
|
561
|
|
356
|
562 host = &u->resolved->host;
|
|
348
|
563
|
|
|
564 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
565
|
|
|
566 uscfp = umcf->upstreams.elts;
|
|
|
567
|
|
|
568 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
|
569
|
|
|
570 uscf = uscfp[i];
|
|
|
571
|
|
|
572 if (uscf->host.len == host->len
|
|
416
|
573 && ((uscf->port == 0 && u->resolved->no_port)
|
|
366
|
574 || uscf->port == u->resolved->port)
|
|
348
|
575 && ngx_memcmp(uscf->host.data, host->data, host->len) == 0)
|
|
|
576 {
|
|
|
577 goto found;
|
|
|
578 }
|
|
|
579 }
|
|
|
580
|
|
618
|
581 if (u->resolved->port == 0) {
|
|
|
582 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
583 "no port in upstream \"%V\"", host);
|
|
|
584 ngx_http_upstream_finalize_request(r, u,
|
|
|
585 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
586 return;
|
|
|
587 }
|
|
|
588
|
|
348
|
589 temp.name = *host;
|
|
|
590
|
|
|
591 ctx = ngx_resolve_start(clcf->resolver, &temp);
|
|
|
592 if (ctx == NULL) {
|
|
530
|
593 ngx_http_upstream_finalize_request(r, u,
|
|
|
594 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
595 return;
|
|
|
596 }
|
|
|
597
|
|
354
|
598 if (ctx == NGX_NO_RESOLVER) {
|
|
518
|
599 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
354
|
600 "no resolver defined to resolve %V", host);
|
|
|
601
|
|
530
|
602 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
354
|
603 return;
|
|
|
604 }
|
|
|
605
|
|
348
|
606 ctx->name = *host;
|
|
|
607 ctx->type = NGX_RESOLVE_A;
|
|
|
608 ctx->handler = ngx_http_upstream_resolve_handler;
|
|
|
609 ctx->data = r;
|
|
|
610 ctx->timeout = clcf->resolver_timeout;
|
|
|
611
|
|
372
|
612 u->resolved->ctx = ctx;
|
|
|
613
|
|
348
|
614 if (ngx_resolve_name(ctx) != NGX_OK) {
|
|
372
|
615 u->resolved->ctx = NULL;
|
|
530
|
616 ngx_http_upstream_finalize_request(r, u,
|
|
|
617 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
618 return;
|
|
|
619 }
|
|
|
620
|
|
|
621 return;
|
|
|
622 }
|
|
|
623
|
|
|
624 found:
|
|
|
625
|
|
|
626 if (uscf->peer.init(r, uscf) != NGX_OK) {
|
|
530
|
627 ngx_http_upstream_finalize_request(r, u,
|
|
|
628 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
629 return;
|
|
|
630 }
|
|
|
631
|
|
28
|
632 ngx_http_upstream_connect(r, u);
|
|
|
633 }
|
|
|
634
|
|
|
635
|
|
464
|
636 #if (NGX_HTTP_CACHE)
|
|
|
637
|
|
|
638 static ngx_int_t
|
|
|
639 ngx_http_upstream_cache(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
640 {
|
|
|
641 ngx_int_t rc;
|
|
|
642 ngx_http_cache_t *c;
|
|
|
643
|
|
518
|
644 c = r->cache;
|
|
|
645
|
|
464
|
646 if (c == NULL) {
|
|
518
|
647
|
|
|
648 if (!(r->method & u->conf->cache_methods)) {
|
|
|
649 return NGX_DECLINED;
|
|
|
650 }
|
|
|
651
|
|
|
652 if (r->method & NGX_HTTP_HEAD) {
|
|
|
653 u->method = ngx_http_core_get_method;
|
|
|
654 }
|
|
|
655
|
|
588
|
656 if (ngx_http_file_cache_new(r) != NGX_OK) {
|
|
518
|
657 return NGX_ERROR;
|
|
|
658 }
|
|
|
659
|
|
|
660 if (u->create_key(r) != NGX_OK) {
|
|
|
661 return NGX_ERROR;
|
|
|
662 }
|
|
|
663
|
|
|
664 /* TODO: add keys */
|
|
|
665
|
|
|
666 ngx_http_file_cache_create_key(r);
|
|
|
667
|
|
632
|
668 if (r->cache->header_start + 256 >= u->conf->buffer_size) {
|
|
630
|
669 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
632
|
670 "%V_buffer_size %uz is not enough for cache key, "
|
|
|
671 "it should increased at least to %uz",
|
|
|
672 &u->conf->module, u->conf->buffer_size,
|
|
|
673 ngx_align(r->cache->header_start + 256, 1024));
|
|
630
|
674
|
|
|
675 r->cache = NULL;
|
|
|
676 return NGX_DECLINED;
|
|
|
677 }
|
|
|
678
|
|
638
|
679 u->cacheable = 1;
|
|
|
680
|
|
626
|
681 switch (ngx_http_test_predicates(r, u->conf->cache_bypass)) {
|
|
|
682
|
|
|
683 case NGX_ERROR:
|
|
|
684 return NGX_ERROR;
|
|
|
685
|
|
|
686 case NGX_DECLINED:
|
|
|
687 u->cache_status = NGX_HTTP_CACHE_BYPASS;
|
|
|
688 return NGX_DECLINED;
|
|
|
689
|
|
|
690 default: /* NGX_OK */
|
|
|
691 break;
|
|
|
692 }
|
|
|
693
|
|
588
|
694 c = r->cache;
|
|
|
695
|
|
518
|
696 c->min_uses = u->conf->cache_min_uses;
|
|
|
697 c->body_start = u->conf->buffer_size;
|
|
|
698 c->file_cache = u->conf->cache->data;
|
|
|
699
|
|
|
700 u->cache_status = NGX_HTTP_CACHE_MISS;
|
|
464
|
701 }
|
|
|
702
|
|
|
703 rc = ngx_http_file_cache_open(r);
|
|
|
704
|
|
498
|
705 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
706 "http upstream cache: %i", rc);
|
|
|
707
|
|
502
|
708 switch (rc) {
|
|
|
709
|
|
|
710 case NGX_HTTP_CACHE_UPDATING:
|
|
|
711
|
|
498
|
712 if (u->conf->cache_use_stale & NGX_HTTP_UPSTREAM_FT_UPDATING) {
|
|
502
|
713 u->cache_status = rc;
|
|
498
|
714 rc = NGX_OK;
|
|
|
715
|
|
|
716 } else {
|
|
|
717 rc = NGX_HTTP_CACHE_STALE;
|
|
|
718 }
|
|
502
|
719
|
|
|
720 break;
|
|
|
721
|
|
|
722 case NGX_OK:
|
|
|
723 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
498
|
724 }
|
|
464
|
725
|
|
502
|
726 switch (rc) {
|
|
|
727
|
|
|
728 case NGX_OK:
|
|
464
|
729
|
|
|
730 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
731
|
|
|
732 if (rc != NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
733 return rc;
|
|
|
734 }
|
|
|
735
|
|
502
|
736 break;
|
|
|
737
|
|
|
738 case NGX_HTTP_CACHE_STALE:
|
|
464
|
739
|
|
472
|
740 c->valid_sec = 0;
|
|
464
|
741 u->buffer.start = NULL;
|
|
502
|
742 u->cache_status = NGX_HTTP_CACHE_EXPIRED;
|
|
|
743
|
|
|
744 break;
|
|
|
745
|
|
|
746 case NGX_DECLINED:
|
|
464
|
747
|
|
|
748 if ((size_t) (u->buffer.end - u->buffer.start) < u->conf->buffer_size) {
|
|
|
749 u->buffer.start = NULL;
|
|
|
750
|
|
|
751 } else {
|
|
|
752 u->buffer.pos = u->buffer.start + c->header_start;
|
|
|
753 u->buffer.last = u->buffer.pos;
|
|
|
754 }
|
|
|
755
|
|
502
|
756 break;
|
|
|
757
|
|
518
|
758 case NGX_HTTP_CACHE_SCARCE:
|
|
464
|
759
|
|
|
760 u->cacheable = 0;
|
|
|
761
|
|
502
|
762 break;
|
|
|
763
|
|
518
|
764 case NGX_AGAIN:
|
|
|
765
|
|
|
766 return NGX_BUSY;
|
|
|
767
|
|
|
768 case NGX_ERROR:
|
|
|
769
|
|
|
770 return NGX_ERROR;
|
|
|
771
|
|
502
|
772 default:
|
|
464
|
773
|
|
|
774 /* cached NGX_HTTP_BAD_GATEWAY, NGX_HTTP_GATEWAY_TIME_OUT, etc. */
|
|
|
775
|
|
502
|
776 u->cache_status = NGX_HTTP_CACHE_HIT;
|
|
|
777
|
|
464
|
778 return rc;
|
|
|
779 }
|
|
|
780
|
|
|
781 r->cached = 0;
|
|
|
782
|
|
|
783 return NGX_DECLINED;
|
|
|
784 }
|
|
|
785
|
|
|
786
|
|
|
787 static ngx_int_t
|
|
|
788 ngx_http_upstream_cache_send(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
789 {
|
|
|
790 ngx_int_t rc;
|
|
|
791 ngx_http_cache_t *c;
|
|
|
792
|
|
502
|
793 r->cached = 1;
|
|
464
|
794 c = r->cache;
|
|
|
795
|
|
554
|
796 if (c->header_start == c->body_start) {
|
|
|
797 r->http_version = NGX_HTTP_VERSION_9;
|
|
|
798 return ngx_http_cache_send(r);
|
|
|
799 }
|
|
|
800
|
|
464
|
801 /* TODO: cache stack */
|
|
|
802
|
|
|
803 u->buffer = *c->buf;
|
|
|
804 u->buffer.pos += c->header_start;
|
|
|
805
|
|
|
806 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
807
|
|
|
808 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
|
809 sizeof(ngx_table_elt_t))
|
|
|
810 != NGX_OK)
|
|
|
811 {
|
|
|
812 return NGX_ERROR;
|
|
|
813 }
|
|
|
814
|
|
|
815 rc = u->process_header(r);
|
|
|
816
|
|
|
817 if (rc == NGX_OK) {
|
|
|
818
|
|
|
819 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
|
820 return NGX_DONE;
|
|
|
821 }
|
|
|
822
|
|
|
823 return ngx_http_cache_send(r);
|
|
|
824 }
|
|
|
825
|
|
|
826 if (rc == NGX_ERROR) {
|
|
|
827 return NGX_ERROR;
|
|
|
828 }
|
|
|
829
|
|
|
830 /* rc == NGX_HTTP_UPSTREAM_INVALID_HEADER */
|
|
|
831
|
|
|
832 /* TODO: delete file */
|
|
|
833
|
|
|
834 return rc;
|
|
|
835 }
|
|
|
836
|
|
|
837 #endif
|
|
|
838
|
|
|
839
|
|
36
|
840 static void
|
|
348
|
841 ngx_http_upstream_resolve_handler(ngx_resolver_ctx_t *ctx)
|
|
|
842 {
|
|
|
843 ngx_http_request_t *r;
|
|
530
|
844 ngx_http_upstream_t *u;
|
|
348
|
845 ngx_http_upstream_resolved_t *ur;
|
|
|
846
|
|
|
847 r = ctx->data;
|
|
|
848
|
|
530
|
849 u = r->upstream;
|
|
|
850 ur = u->resolved;
|
|
348
|
851
|
|
|
852 if (ctx->state) {
|
|
|
853 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
|
|
|
854 "%V could not be resolved (%i: %s)",
|
|
|
855 &ctx->name, ctx->state,
|
|
|
856 ngx_resolver_strerror(ctx->state));
|
|
|
857
|
|
530
|
858 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_BAD_GATEWAY);
|
|
348
|
859 return;
|
|
|
860 }
|
|
|
861
|
|
|
862 ur->naddrs = ctx->naddrs;
|
|
|
863 ur->addrs = ctx->addrs;
|
|
|
864
|
|
|
865 #if (NGX_DEBUG)
|
|
|
866 {
|
|
|
867 in_addr_t addr;
|
|
|
868 ngx_uint_t i;
|
|
|
869
|
|
|
870 for (i = 0; i < ctx->naddrs; i++) {
|
|
|
871 addr = ntohl(ur->addrs[i]);
|
|
|
872
|
|
|
873 ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
874 "name was resolved to %ud.%ud.%ud.%ud",
|
|
|
875 (addr >> 24) & 0xff, (addr >> 16) & 0xff,
|
|
|
876 (addr >> 8) & 0xff, addr & 0xff);
|
|
|
877 }
|
|
|
878 }
|
|
|
879 #endif
|
|
|
880
|
|
|
881 if (ngx_http_upstream_create_round_robin_peer(r, ur) != NGX_OK) {
|
|
530
|
882 ngx_http_upstream_finalize_request(r, u,
|
|
|
883 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
348
|
884 return;
|
|
|
885 }
|
|
|
886
|
|
|
887 ngx_resolve_name_done(ctx);
|
|
530
|
888 ur->ctx = NULL;
|
|
|
889
|
|
|
890 ngx_http_upstream_connect(r, u);
|
|
348
|
891 }
|
|
|
892
|
|
|
893
|
|
|
894 static void
|
|
426
|
895 ngx_http_upstream_handler(ngx_event_t *ev)
|
|
|
896 {
|
|
|
897 ngx_connection_t *c;
|
|
|
898 ngx_http_request_t *r;
|
|
|
899 ngx_http_log_ctx_t *ctx;
|
|
|
900 ngx_http_upstream_t *u;
|
|
|
901
|
|
|
902 c = ev->data;
|
|
|
903 r = c->data;
|
|
|
904
|
|
|
905 u = r->upstream;
|
|
|
906 c = r->connection;
|
|
|
907
|
|
|
908 ctx = c->log->data;
|
|
|
909 ctx->current_request = r;
|
|
|
910
|
|
|
911 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
912 "http upstream request: \"%V?%V\"", &r->uri, &r->args);
|
|
|
913
|
|
|
914 if (ev->write) {
|
|
430
|
915 u->write_event_handler(r, u);
|
|
426
|
916
|
|
|
917 } else {
|
|
430
|
918 u->read_event_handler(r, u);
|
|
426
|
919 }
|
|
|
920
|
|
|
921 ngx_http_run_posted_requests(c);
|
|
|
922 }
|
|
|
923
|
|
|
924
|
|
|
925 static void
|
|
58
|
926 ngx_http_upstream_rd_check_broken_connection(ngx_http_request_t *r)
|
|
|
927 {
|
|
|
928 ngx_http_upstream_check_broken_connection(r, r->connection->read);
|
|
|
929 }
|
|
|
930
|
|
|
931
|
|
|
932 static void
|
|
|
933 ngx_http_upstream_wr_check_broken_connection(ngx_http_request_t *r)
|
|
|
934 {
|
|
|
935 ngx_http_upstream_check_broken_connection(r, r->connection->write);
|
|
|
936 }
|
|
|
937
|
|
|
938
|
|
|
939 static void
|
|
|
940 ngx_http_upstream_check_broken_connection(ngx_http_request_t *r,
|
|
|
941 ngx_event_t *ev)
|
|
28
|
942 {
|
|
|
943 int n;
|
|
|
944 char buf[1];
|
|
126
|
945 ngx_err_t err;
|
|
486
|
946 ngx_int_t event;
|
|
28
|
947 ngx_connection_t *c;
|
|
|
948 ngx_http_upstream_t *u;
|
|
|
949
|
|
76
|
950 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, ev->log, 0,
|
|
|
951 "http upstream check client, write event:%d, \"%V\"",
|
|
|
952 ev->write, &r->uri);
|
|
28
|
953
|
|
58
|
954 c = r->connection;
|
|
32
|
955 u = r->upstream;
|
|
|
956
|
|
132
|
957 if (c->error) {
|
|
486
|
958 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
|
959
|
|
|
960 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
961
|
|
|
962 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
|
963 ngx_http_upstream_finalize_request(r, u,
|
|
|
964 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
965 return;
|
|
|
966 }
|
|
|
967 }
|
|
|
968
|
|
482
|
969 if (!u->cacheable) {
|
|
|
970 ngx_http_upstream_finalize_request(r, u,
|
|
|
971 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
972 }
|
|
486
|
973
|
|
76
|
974 return;
|
|
|
975 }
|
|
|
976
|
|
28
|
977 #if (NGX_HAVE_KQUEUE)
|
|
|
978
|
|
|
979 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
|
980
|
|
|
981 if (!ev->pending_eof) {
|
|
|
982 return;
|
|
|
983 }
|
|
|
984
|
|
|
985 ev->eof = 1;
|
|
132
|
986 c->error = 1;
|
|
28
|
987
|
|
|
988 if (ev->kq_errno) {
|
|
|
989 ev->error = 1;
|
|
|
990 }
|
|
|
991
|
|
482
|
992 if (!u->cacheable && u->peer.connection) {
|
|
28
|
993 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
638
|
994 "kevent() reported that client prematurely closed "
|
|
76
|
995 "connection, so upstream connection is closed too");
|
|
28
|
996 ngx_http_upstream_finalize_request(r, u,
|
|
|
997 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
998 return;
|
|
|
999 }
|
|
|
1000
|
|
|
1001 ngx_log_error(NGX_LOG_INFO, ev->log, ev->kq_errno,
|
|
638
|
1002 "kevent() reported that client prematurely closed "
|
|
|
1003 "connection");
|
|
28
|
1004
|
|
|
1005 if (u->peer.connection == NULL) {
|
|
|
1006 ngx_http_upstream_finalize_request(r, u,
|
|
|
1007 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1008 }
|
|
|
1009
|
|
|
1010 return;
|
|
|
1011 }
|
|
|
1012
|
|
|
1013 #endif
|
|
|
1014
|
|
|
1015 n = recv(c->fd, buf, 1, MSG_PEEK);
|
|
|
1016
|
|
|
1017 err = ngx_socket_errno;
|
|
|
1018
|
|
286
|
1019 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, ev->log, err,
|
|
|
1020 "http upstream recv(): %d", n);
|
|
|
1021
|
|
28
|
1022 if (ev->write && (n >= 0 || err == NGX_EAGAIN)) {
|
|
|
1023 return;
|
|
|
1024 }
|
|
|
1025
|
|
|
1026 if ((ngx_event_flags & NGX_USE_LEVEL_EVENT) && ev->active) {
|
|
486
|
1027
|
|
|
1028 event = ev->write ? NGX_WRITE_EVENT : NGX_READ_EVENT;
|
|
|
1029
|
|
|
1030 if (ngx_del_event(ev, event, 0) != NGX_OK) {
|
|
28
|
1031 ngx_http_upstream_finalize_request(r, u,
|
|
|
1032 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1033 return;
|
|
|
1034 }
|
|
|
1035 }
|
|
|
1036
|
|
|
1037 if (n > 0) {
|
|
|
1038 return;
|
|
|
1039 }
|
|
|
1040
|
|
|
1041 if (n == -1) {
|
|
|
1042 if (err == NGX_EAGAIN) {
|
|
|
1043 return;
|
|
|
1044 }
|
|
|
1045
|
|
|
1046 ev->error = 1;
|
|
|
1047
|
|
32
|
1048 } else { /* n == 0 */
|
|
28
|
1049 err = 0;
|
|
|
1050 }
|
|
|
1051
|
|
78
|
1052 ev->eof = 1;
|
|
132
|
1053 c->error = 1;
|
|
78
|
1054
|
|
482
|
1055 if (!u->cacheable && u->peer.connection) {
|
|
28
|
1056 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
638
|
1057 "client prematurely closed connection, "
|
|
28
|
1058 "so upstream connection is closed too");
|
|
|
1059 ngx_http_upstream_finalize_request(r, u,
|
|
|
1060 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1061 return;
|
|
|
1062 }
|
|
|
1063
|
|
|
1064 ngx_log_error(NGX_LOG_INFO, ev->log, err,
|
|
638
|
1065 "client prematurely closed connection");
|
|
28
|
1066
|
|
|
1067 if (u->peer.connection == NULL) {
|
|
|
1068 ngx_http_upstream_finalize_request(r, u,
|
|
|
1069 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
1070 }
|
|
|
1071 }
|
|
|
1072
|
|
|
1073
|
|
36
|
1074 static void
|
|
|
1075 ngx_http_upstream_connect(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1076 {
|
|
140
|
1077 ngx_int_t rc;
|
|
214
|
1078 ngx_time_t *tp;
|
|
140
|
1079 ngx_connection_t *c;
|
|
28
|
1080
|
|
32
|
1081 r->connection->log->action = "connecting to upstream";
|
|
28
|
1082
|
|
|
1083 r->connection->single_connection = 0;
|
|
|
1084
|
|
262
|
1085 if (u->state && u->state->response_sec) {
|
|
214
|
1086 tp = ngx_timeofday();
|
|
262
|
1087 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
1088 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
214
|
1089 }
|
|
|
1090
|
|
296
|
1091 u->state = ngx_array_push(r->upstream_states);
|
|
214
|
1092 if (u->state == NULL) {
|
|
|
1093 ngx_http_upstream_finalize_request(r, u,
|
|
|
1094 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1095 return;
|
|
|
1096 }
|
|
|
1097
|
|
|
1098 ngx_memzero(u->state, sizeof(ngx_http_upstream_state_t));
|
|
|
1099
|
|
|
1100 tp = ngx_timeofday();
|
|
262
|
1101 u->state->response_sec = tp->sec;
|
|
|
1102 u->state->response_msec = tp->msec;
|
|
214
|
1103
|
|
28
|
1104 rc = ngx_event_connect_peer(&u->peer);
|
|
|
1105
|
|
|
1106 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
1107 "http upstream connect: %i", rc);
|
|
|
1108
|
|
|
1109 if (rc == NGX_ERROR) {
|
|
|
1110 ngx_http_upstream_finalize_request(r, u,
|
|
|
1111 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1112 return;
|
|
|
1113 }
|
|
|
1114
|
|
356
|
1115 u->state->peer = u->peer.name;
|
|
|
1116
|
|
92
|
1117 if (rc == NGX_BUSY) {
|
|
|
1118 ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "no live upstreams");
|
|
326
|
1119 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_NOLIVE);
|
|
|
1120 return;
|
|
92
|
1121 }
|
|
|
1122
|
|
326
|
1123 if (rc == NGX_DECLINED) {
|
|
28
|
1124 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1125 return;
|
|
|
1126 }
|
|
|
1127
|
|
126
|
1128 /* rc == NGX_OK || rc == NGX_AGAIN */
|
|
|
1129
|
|
28
|
1130 c = u->peer.connection;
|
|
|
1131
|
|
|
1132 c->data = r;
|
|
140
|
1133
|
|
426
|
1134 c->write->handler = ngx_http_upstream_handler;
|
|
|
1135 c->read->handler = ngx_http_upstream_handler;
|
|
|
1136
|
|
|
1137 u->write_event_handler = ngx_http_upstream_send_request_handler;
|
|
|
1138 u->read_event_handler = ngx_http_upstream_process_header;
|
|
28
|
1139
|
|
326
|
1140 c->sendfile &= r->connection->sendfile;
|
|
372
|
1141 u->output.sendfile = c->sendfile;
|
|
28
|
1142
|
|
|
1143 c->pool = r->pool;
|
|
492
|
1144 c->log = r->connection->log;
|
|
|
1145 c->read->log = c->log;
|
|
|
1146 c->write->log = c->log;
|
|
28
|
1147
|
|
|
1148 /* init or reinit the ngx_output_chain() and ngx_chain_writer() contexts */
|
|
|
1149
|
|
|
1150 u->writer.out = NULL;
|
|
|
1151 u->writer.last = &u->writer.out;
|
|
|
1152 u->writer.connection = c;
|
|
|
1153 u->writer.limit = 0;
|
|
|
1154
|
|
|
1155 if (u->request_sent) {
|
|
58
|
1156 if (ngx_http_upstream_reinit(r, u) != NGX_OK) {
|
|
|
1157 ngx_http_upstream_finalize_request(r, u,
|
|
|
1158 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1159 return;
|
|
|
1160 }
|
|
28
|
1161 }
|
|
|
1162
|
|
276
|
1163 if (r->request_body
|
|
|
1164 && r->request_body->buf
|
|
|
1165 && r->request_body->temp_file
|
|
|
1166 && r == r->main)
|
|
|
1167 {
|
|
122
|
1168 /*
|
|
|
1169 * the r->request_body->buf can be reused for one request only,
|
|
|
1170 * the subrequests should allocate their own temporay bufs
|
|
|
1171 */
|
|
|
1172
|
|
|
1173 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1174 if (u->output.free == NULL) {
|
|
|
1175 ngx_http_upstream_finalize_request(r, u,
|
|
|
1176 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1177 return;
|
|
28
|
1178 }
|
|
122
|
1179
|
|
|
1180 u->output.free->buf = r->request_body->buf;
|
|
|
1181 u->output.free->next = NULL;
|
|
|
1182 u->output.allocated = 1;
|
|
|
1183
|
|
|
1184 r->request_body->buf->pos = r->request_body->buf->start;
|
|
|
1185 r->request_body->buf->last = r->request_body->buf->start;
|
|
|
1186 r->request_body->buf->tag = u->output.tag;
|
|
28
|
1187 }
|
|
|
1188
|
|
|
1189 u->request_sent = 0;
|
|
|
1190
|
|
|
1191 if (rc == NGX_AGAIN) {
|
|
|
1192 ngx_add_timer(c->write, u->conf->connect_timeout);
|
|
|
1193 return;
|
|
|
1194 }
|
|
|
1195
|
|
126
|
1196 #if (NGX_HTTP_SSL)
|
|
|
1197
|
|
348
|
1198 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1199 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
126
|
1200 return;
|
|
|
1201 }
|
|
|
1202
|
|
|
1203 #endif
|
|
|
1204
|
|
28
|
1205 ngx_http_upstream_send_request(r, u);
|
|
|
1206 }
|
|
|
1207
|
|
|
1208
|
|
126
|
1209 #if (NGX_HTTP_SSL)
|
|
|
1210
|
|
|
1211 static void
|
|
140
|
1212 ngx_http_upstream_ssl_init_connection(ngx_http_request_t *r,
|
|
|
1213 ngx_http_upstream_t *u, ngx_connection_t *c)
|
|
|
1214 {
|
|
260
|
1215 ngx_int_t rc;
|
|
140
|
1216
|
|
|
1217 if (ngx_ssl_create_connection(u->conf->ssl, c,
|
|
|
1218 NGX_SSL_BUFFER|NGX_SSL_CLIENT)
|
|
454
|
1219 != NGX_OK)
|
|
140
|
1220 {
|
|
|
1221 ngx_http_upstream_finalize_request(r, u,
|
|
|
1222 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1223 return;
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 c->sendfile = 0;
|
|
168
|
1227 u->output.sendfile = 0;
|
|
140
|
1228
|
|
398
|
1229 if (u->conf->ssl_session_reuse) {
|
|
|
1230 if (u->peer.set_session(&u->peer, u->peer.data) != NGX_OK) {
|
|
|
1231 ngx_http_upstream_finalize_request(r, u,
|
|
|
1232 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1233 return;
|
|
|
1234 }
|
|
140
|
1235 }
|
|
|
1236
|
|
190
|
1237 r->connection->log->action = "SSL handshaking to upstream";
|
|
|
1238
|
|
140
|
1239 rc = ngx_ssl_handshake(c);
|
|
|
1240
|
|
|
1241 if (rc == NGX_AGAIN) {
|
|
|
1242 c->ssl->handler = ngx_http_upstream_ssl_handshake;
|
|
|
1243 return;
|
|
|
1244 }
|
|
|
1245
|
|
|
1246 ngx_http_upstream_ssl_handshake(c);
|
|
|
1247 }
|
|
|
1248
|
|
|
1249
|
|
|
1250 static void
|
|
126
|
1251 ngx_http_upstream_ssl_handshake(ngx_connection_t *c)
|
|
|
1252 {
|
|
|
1253 ngx_http_request_t *r;
|
|
|
1254 ngx_http_upstream_t *u;
|
|
|
1255
|
|
|
1256 r = c->data;
|
|
|
1257 u = r->upstream;
|
|
|
1258
|
|
|
1259 if (c->ssl->handshaked) {
|
|
|
1260
|
|
398
|
1261 if (u->conf->ssl_session_reuse) {
|
|
|
1262 u->peer.save_session(&u->peer, u->peer.data);
|
|
|
1263 }
|
|
260
|
1264
|
|
426
|
1265 c->write->handler = ngx_http_upstream_handler;
|
|
|
1266 c->read->handler = ngx_http_upstream_handler;
|
|
126
|
1267
|
|
|
1268 ngx_http_upstream_send_request(r, u);
|
|
|
1269
|
|
|
1270 return;
|
|
|
1271 }
|
|
|
1272
|
|
|
1273 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1274
|
|
|
1275 }
|
|
|
1276
|
|
|
1277 #endif
|
|
|
1278
|
|
|
1279
|
|
58
|
1280 static ngx_int_t
|
|
36
|
1281 ngx_http_upstream_reinit(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1282 {
|
|
|
1283 ngx_chain_t *cl;
|
|
|
1284
|
|
58
|
1285 if (u->reinit_request(r) != NGX_OK) {
|
|
|
1286 return NGX_ERROR;
|
|
|
1287 }
|
|
|
1288
|
|
356
|
1289 ngx_memzero(&u->headers_in, sizeof(ngx_http_upstream_headers_in_t));
|
|
|
1290
|
|
|
1291 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
140
|
1292 sizeof(ngx_table_elt_t))
|
|
|
1293 != NGX_OK)
|
|
58
|
1294 {
|
|
|
1295 return NGX_ERROR;
|
|
28
|
1296 }
|
|
|
1297
|
|
|
1298 /* reinit the request chain */
|
|
126
|
1299
|
|
58
|
1300 for (cl = u->request_bufs; cl; cl = cl->next) {
|
|
28
|
1301 cl->buf->pos = cl->buf->start;
|
|
|
1302 cl->buf->file_pos = 0;
|
|
|
1303 }
|
|
|
1304
|
|
58
|
1305 /* reinit the subrequest's ngx_output_chain() context */
|
|
|
1306
|
|
122
|
1307 if (r->request_body && r->request_body->temp_file
|
|
146
|
1308 && r != r->main && u->output.buf)
|
|
122
|
1309 {
|
|
|
1310 u->output.free = ngx_alloc_chain_link(r->pool);
|
|
|
1311 if (u->output.free == NULL) {
|
|
|
1312 return NGX_ERROR;
|
|
58
|
1313 }
|
|
122
|
1314
|
|
|
1315 u->output.free->buf = u->output.buf;
|
|
|
1316 u->output.free->next = NULL;
|
|
|
1317
|
|
|
1318 u->output.buf->pos = u->output.buf->start;
|
|
|
1319 u->output.buf->last = u->output.buf->start;
|
|
58
|
1320 }
|
|
28
|
1321
|
|
|
1322 u->output.buf = NULL;
|
|
|
1323 u->output.in = NULL;
|
|
|
1324 u->output.busy = NULL;
|
|
126
|
1325
|
|
130
|
1326 /* reinit u->buffer */
|
|
126
|
1327
|
|
464
|
1328 u->buffer.pos = u->buffer.start;
|
|
|
1329
|
|
|
1330 #if (NGX_HTTP_CACHE)
|
|
|
1331
|
|
|
1332 if (r->cache) {
|
|
|
1333 u->buffer.pos += r->cache->header_start;
|
|
28
|
1334 }
|
|
58
|
1335
|
|
28
|
1336 #endif
|
|
|
1337
|
|
464
|
1338 u->buffer.last = u->buffer.pos;
|
|
|
1339
|
|
58
|
1340 return NGX_OK;
|
|
28
|
1341 }
|
|
|
1342
|
|
|
1343
|
|
36
|
1344 static void
|
|
|
1345 ngx_http_upstream_send_request(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1346 {
|
|
294
|
1347 ngx_int_t rc;
|
|
32
|
1348 ngx_connection_t *c;
|
|
126
|
1349
|
|
28
|
1350 c = u->peer.connection;
|
|
|
1351
|
|
|
1352 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1353 "http upstream send request");
|
|
|
1354
|
|
294
|
1355 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1356 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1357 return;
|
|
28
|
1358 }
|
|
|
1359
|
|
32
|
1360 c->log->action = "sending request to upstream";
|
|
28
|
1361
|
|
58
|
1362 rc = ngx_output_chain(&u->output, u->request_sent ? NULL : u->request_bufs);
|
|
28
|
1363
|
|
|
1364 u->request_sent = 1;
|
|
|
1365
|
|
|
1366 if (rc == NGX_ERROR) {
|
|
|
1367 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
|
1368 return;
|
|
|
1369 }
|
|
|
1370
|
|
|
1371 if (c->write->timer_set) {
|
|
|
1372 ngx_del_timer(c->write);
|
|
|
1373 }
|
|
|
1374
|
|
|
1375 if (rc == NGX_AGAIN) {
|
|
|
1376 ngx_add_timer(c->write, u->conf->send_timeout);
|
|
|
1377
|
|
430
|
1378 if (ngx_handle_write_event(c->write, u->conf->send_lowat) != NGX_OK) {
|
|
28
|
1379 ngx_http_upstream_finalize_request(r, u,
|
|
|
1380 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1381 return;
|
|
|
1382 }
|
|
|
1383
|
|
|
1384 return;
|
|
|
1385 }
|
|
|
1386
|
|
|
1387 /* rc == NGX_OK */
|
|
|
1388
|
|
|
1389 if (c->tcp_nopush == NGX_TCP_NOPUSH_SET) {
|
|
|
1390 if (ngx_tcp_push(c->fd) == NGX_ERROR) {
|
|
|
1391 ngx_log_error(NGX_LOG_CRIT, c->log, ngx_socket_errno,
|
|
|
1392 ngx_tcp_push_n " failed");
|
|
|
1393 ngx_http_upstream_finalize_request(r, u,
|
|
|
1394 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
126
|
1395 return;
|
|
28
|
1396 }
|
|
|
1397
|
|
|
1398 c->tcp_nopush = NGX_TCP_NOPUSH_UNSET;
|
|
|
1399 }
|
|
126
|
1400
|
|
28
|
1401 ngx_add_timer(c->read, u->conf->read_timeout);
|
|
|
1402
|
|
|
1403 #if 1
|
|
|
1404 if (c->read->ready) {
|
|
126
|
1405
|
|
28
|
1406 /* post aio operation */
|
|
|
1407
|
|
|
1408 /*
|
|
|
1409 * TODO comment
|
|
|
1410 * although we can post aio operation just in the end
|
|
|
1411 * of ngx_http_upstream_connect() CHECK IT !!!
|
|
|
1412 * it's better to do here because we postpone header buffer allocation
|
|
|
1413 */
|
|
|
1414
|
|
430
|
1415 ngx_http_upstream_process_header(r, u);
|
|
28
|
1416 return;
|
|
|
1417 }
|
|
|
1418 #endif
|
|
|
1419
|
|
426
|
1420 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
28
|
1421
|
|
430
|
1422 if (ngx_handle_write_event(c->write, 0) != NGX_OK) {
|
|
28
|
1423 ngx_http_upstream_finalize_request(r, u,
|
|
|
1424 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1425 return;
|
|
|
1426 }
|
|
|
1427 }
|
|
|
1428
|
|
|
1429
|
|
36
|
1430 static void
|
|
430
|
1431 ngx_http_upstream_send_request_handler(ngx_http_request_t *r,
|
|
|
1432 ngx_http_upstream_t *u)
|
|
28
|
1433 {
|
|
430
|
1434 ngx_connection_t *c;
|
|
|
1435
|
|
|
1436 c = u->peer.connection;
|
|
|
1437
|
|
|
1438 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
1439 "http upstream send request handler");
|
|
|
1440
|
|
430
|
1441 if (c->write->timedout) {
|
|
28
|
1442 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1443 return;
|
|
|
1444 }
|
|
|
1445
|
|
140
|
1446 #if (NGX_HTTP_SSL)
|
|
|
1447
|
|
348
|
1448 if (u->ssl && c->ssl == NULL) {
|
|
140
|
1449 ngx_http_upstream_ssl_init_connection(r, u, c);
|
|
|
1450 return;
|
|
|
1451 }
|
|
|
1452
|
|
|
1453 #endif
|
|
|
1454
|
|
200
|
1455 if (u->header_sent) {
|
|
426
|
1456 u->write_event_handler = ngx_http_upstream_dummy_handler;
|
|
200
|
1457
|
|
430
|
1458 (void) ngx_handle_write_event(c->write, 0);
|
|
200
|
1459
|
|
|
1460 return;
|
|
|
1461 }
|
|
|
1462
|
|
28
|
1463 ngx_http_upstream_send_request(r, u);
|
|
|
1464 }
|
|
|
1465
|
|
|
1466
|
|
36
|
1467 static void
|
|
430
|
1468 ngx_http_upstream_process_header(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
1469 {
|
|
464
|
1470 ssize_t n;
|
|
|
1471 ngx_int_t rc;
|
|
|
1472 ngx_connection_t *c;
|
|
28
|
1473
|
|
430
|
1474 c = u->peer.connection;
|
|
|
1475
|
|
|
1476 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
32
|
1477 "http upstream process header");
|
|
28
|
1478
|
|
32
|
1479 c->log->action = "reading response header from upstream";
|
|
28
|
1480
|
|
430
|
1481 if (c->read->timedout) {
|
|
28
|
1482 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_TIMEOUT);
|
|
|
1483 return;
|
|
|
1484 }
|
|
126
|
1485
|
|
294
|
1486 if (!u->request_sent && ngx_http_upstream_test_connect(c) != NGX_OK) {
|
|
296
|
1487 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
294
|
1488 return;
|
|
|
1489 }
|
|
|
1490
|
|
130
|
1491 if (u->buffer.start == NULL) {
|
|
|
1492 u->buffer.start = ngx_palloc(r->pool, u->conf->buffer_size);
|
|
|
1493 if (u->buffer.start == NULL) {
|
|
28
|
1494 ngx_http_upstream_finalize_request(r, u,
|
|
|
1495 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1496 return;
|
|
|
1497 }
|
|
|
1498
|
|
130
|
1499 u->buffer.pos = u->buffer.start;
|
|
|
1500 u->buffer.last = u->buffer.start;
|
|
|
1501 u->buffer.end = u->buffer.start + u->conf->buffer_size;
|
|
|
1502 u->buffer.temporary = 1;
|
|
|
1503
|
|
|
1504 u->buffer.tag = u->output.tag;
|
|
28
|
1505
|
|
356
|
1506 if (ngx_list_init(&u->headers_in.headers, r->pool, 8,
|
|
130
|
1507 sizeof(ngx_table_elt_t))
|
|
|
1508 != NGX_OK)
|
|
58
|
1509 {
|
|
|
1510 ngx_http_upstream_finalize_request(r, u,
|
|
|
1511 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1512 return;
|
|
|
1513 }
|
|
|
1514
|
|
464
|
1515 #if (NGX_HTTP_CACHE)
|
|
|
1516
|
|
|
1517 if (r->cache) {
|
|
|
1518 u->buffer.pos += r->cache->header_start;
|
|
130
|
1519 u->buffer.last = u->buffer.pos;
|
|
28
|
1520 }
|
|
|
1521 #endif
|
|
|
1522 }
|
|
|
1523
|
|
424
|
1524 for ( ;; ) {
|
|
|
1525
|
|
|
1526 n = c->recv(c, u->buffer.last, u->buffer.end - u->buffer.last);
|
|
|
1527
|
|
|
1528 if (n == NGX_AGAIN) {
|
|
28
|
1529 #if 0
|
|
424
|
1530 ngx_add_timer(rev, u->read_timeout);
|
|
28
|
1531 #endif
|
|
|
1532
|
|
430
|
1533 if (ngx_handle_read_event(c->read, 0) != NGX_OK) {
|
|
424
|
1534 ngx_http_upstream_finalize_request(r, u,
|
|
28
|
1535 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
424
|
1536 return;
|
|
|
1537 }
|
|
|
1538
|
|
|
1539 return;
|
|
|
1540 }
|
|
|
1541
|
|
|
1542 if (n == 0) {
|
|
430
|
1543 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1544 "upstream prematurely closed connection");
|
|
|
1545 }
|
|
|
1546
|
|
|
1547 if (n == NGX_ERROR || n == 0) {
|
|
|
1548 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_ERROR);
|
|
28
|
1549 return;
|
|
|
1550 }
|
|
|
1551
|
|
424
|
1552 u->buffer.last += n;
|
|
28
|
1553
|
|
|
1554 #if 0
|
|
424
|
1555 u->valid_header_in = 0;
|
|
|
1556
|
|
|
1557 u->peer.cached = 0;
|
|
28
|
1558 #endif
|
|
|
1559
|
|
424
|
1560 rc = u->process_header(r);
|
|
|
1561
|
|
|
1562 if (rc == NGX_AGAIN) {
|
|
|
1563
|
|
646
|
1564 if (u->buffer.last == u->buffer.end) {
|
|
430
|
1565 ngx_log_error(NGX_LOG_ERR, c->log, 0,
|
|
424
|
1566 "upstream sent too big header");
|
|
|
1567
|
|
|
1568 ngx_http_upstream_next(r, u,
|
|
|
1569 NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1570 return;
|
|
|
1571 }
|
|
|
1572
|
|
|
1573 continue;
|
|
28
|
1574 }
|
|
|
1575
|
|
424
|
1576 break;
|
|
28
|
1577 }
|
|
|
1578
|
|
|
1579 if (rc == NGX_HTTP_UPSTREAM_INVALID_HEADER) {
|
|
|
1580 ngx_http_upstream_next(r, u, NGX_HTTP_UPSTREAM_FT_INVALID_HEADER);
|
|
|
1581 return;
|
|
|
1582 }
|
|
|
1583
|
|
356
|
1584 if (rc == NGX_ERROR) {
|
|
28
|
1585 ngx_http_upstream_finalize_request(r, u,
|
|
|
1586 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1587 return;
|
|
|
1588 }
|
|
|
1589
|
|
|
1590 /* rc == NGX_OK */
|
|
|
1591
|
|
558
|
1592 if (u->headers_in.status_n > NGX_HTTP_SPECIAL_RESPONSE) {
|
|
412
|
1593
|
|
|
1594 if (r->subrequest_in_memory) {
|
|
|
1595 u->buffer.last = u->buffer.pos;
|
|
58
|
1596 }
|
|
|
1597
|
|
412
|
1598 if (ngx_http_upstream_test_next(r, u) == NGX_OK) {
|
|
146
|
1599 return;
|
|
|
1600 }
|
|
|
1601
|
|
412
|
1602 if (ngx_http_upstream_intercept_errors(r, u) == NGX_OK) {
|
|
146
|
1603 return;
|
|
|
1604 }
|
|
58
|
1605 }
|
|
|
1606
|
|
464
|
1607 if (ngx_http_upstream_process_headers(r, u) != NGX_OK) {
|
|
64
|
1608 return;
|
|
|
1609 }
|
|
|
1610
|
|
248
|
1611 if (!r->subrequest_in_memory) {
|
|
|
1612 ngx_http_upstream_send_response(r, u);
|
|
|
1613 return;
|
|
|
1614 }
|
|
|
1615
|
|
|
1616 /* subrequest content in memory */
|
|
|
1617
|
|
|
1618 if (u->input_filter == NULL) {
|
|
|
1619 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
1620 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
1621 u->input_filter_ctx = r;
|
|
|
1622 }
|
|
|
1623
|
|
|
1624 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
1625 ngx_http_upstream_finalize_request(r, u,
|
|
|
1626 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1627 return;
|
|
|
1628 }
|
|
|
1629
|
|
420
|
1630 n = u->buffer.last - u->buffer.pos;
|
|
|
1631
|
|
|
1632 if (n) {
|
|
|
1633 u->buffer.last -= n;
|
|
|
1634
|
|
430
|
1635 u->state->response_length += n;
|
|
|
1636
|
|
420
|
1637 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
248
|
1638 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1639 return;
|
|
|
1640 }
|
|
|
1641
|
|
420
|
1642 if (u->length == 0) {
|
|
|
1643 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
1644 return;
|
|
|
1645 }
|
|
248
|
1646 }
|
|
|
1647
|
|
426
|
1648 u->read_event_handler = ngx_http_upstream_process_body_in_memory;
|
|
248
|
1649
|
|
430
|
1650 ngx_http_upstream_process_body_in_memory(r, u);
|
|
248
|
1651 }
|
|
|
1652
|
|
|
1653
|
|
294
|
1654 static ngx_int_t
|
|
412
|
1655 ngx_http_upstream_test_next(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1656 {
|
|
|
1657 ngx_uint_t status;
|
|
|
1658 ngx_http_upstream_next_t *un;
|
|
|
1659
|
|
|
1660 status = u->headers_in.status_n;
|
|
|
1661
|
|
|
1662 for (un = ngx_http_upstream_next_errors; un->status; un++) {
|
|
|
1663
|
|
|
1664 if (status != un->status) {
|
|
|
1665 continue;
|
|
|
1666 }
|
|
|
1667
|
|
|
1668 if (u->peer.tries > 1 && (u->conf->next_upstream & un->mask)) {
|
|
|
1669 ngx_http_upstream_next(r, u, un->mask);
|
|
|
1670 return NGX_OK;
|
|
|
1671 }
|
|
|
1672
|
|
|
1673 #if (NGX_HTTP_CACHE)
|
|
|
1674
|
|
502
|
1675 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
1676 && (u->conf->cache_use_stale & un->mask))
|
|
|
1677 {
|
|
488
|
1678 ngx_int_t rc;
|
|
486
|
1679
|
|
|
1680 rc = u->reinit_request(r);
|
|
|
1681
|
|
|
1682 if (rc == NGX_OK) {
|
|
502
|
1683 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
486
|
1684 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
1685 }
|
|
|
1686
|
|
|
1687 ngx_http_upstream_finalize_request(r, u, rc);
|
|
412
|
1688 return NGX_OK;
|
|
|
1689 }
|
|
|
1690
|
|
|
1691 #endif
|
|
|
1692 }
|
|
|
1693
|
|
|
1694 return NGX_DECLINED;
|
|
|
1695 }
|
|
|
1696
|
|
|
1697
|
|
|
1698 static ngx_int_t
|
|
|
1699 ngx_http_upstream_intercept_errors(ngx_http_request_t *r,
|
|
|
1700 ngx_http_upstream_t *u)
|
|
|
1701 {
|
|
|
1702 ngx_int_t status;
|
|
|
1703 ngx_uint_t i;
|
|
|
1704 ngx_table_elt_t *h;
|
|
|
1705 ngx_http_err_page_t *err_page;
|
|
|
1706 ngx_http_core_loc_conf_t *clcf;
|
|
|
1707
|
|
438
|
1708 status = u->headers_in.status_n;
|
|
|
1709
|
|
|
1710 if (status == NGX_HTTP_NOT_FOUND && u->conf->intercept_404) {
|
|
|
1711 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_NOT_FOUND);
|
|
|
1712 return NGX_OK;
|
|
|
1713 }
|
|
|
1714
|
|
412
|
1715 if (!u->conf->intercept_errors) {
|
|
|
1716 return NGX_DECLINED;
|
|
|
1717 }
|
|
|
1718
|
|
|
1719 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
1720
|
|
|
1721 if (clcf->error_pages == NULL) {
|
|
|
1722 return NGX_DECLINED;
|
|
|
1723 }
|
|
|
1724
|
|
|
1725 err_page = clcf->error_pages->elts;
|
|
|
1726 for (i = 0; i < clcf->error_pages->nelts; i++) {
|
|
|
1727
|
|
|
1728 if (err_page[i].status == status) {
|
|
|
1729
|
|
502
|
1730 if (status == NGX_HTTP_UNAUTHORIZED
|
|
|
1731 && u->headers_in.www_authenticate)
|
|
|
1732 {
|
|
412
|
1733 h = ngx_list_push(&r->headers_out.headers);
|
|
|
1734
|
|
|
1735 if (h == NULL) {
|
|
|
1736 ngx_http_upstream_finalize_request(r, u,
|
|
|
1737 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1738 return NGX_OK;
|
|
|
1739 }
|
|
|
1740
|
|
|
1741 *h = *u->headers_in.www_authenticate;
|
|
|
1742
|
|
|
1743 r->headers_out.www_authenticate = h;
|
|
|
1744 }
|
|
|
1745
|
|
590
|
1746 #if (NGX_HTTP_CACHE)
|
|
|
1747
|
|
|
1748 if (r->cache) {
|
|
|
1749 time_t valid;
|
|
|
1750
|
|
|
1751 valid = ngx_http_file_cache_valid(u->conf->cache_valid, status);
|
|
|
1752
|
|
|
1753 if (valid) {
|
|
|
1754 r->cache->valid_sec = ngx_time() + valid;
|
|
|
1755 r->cache->error = status;
|
|
|
1756 }
|
|
|
1757
|
|
|
1758 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
|
|
1759 }
|
|
|
1760 #endif
|
|
412
|
1761 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
1762
|
|
|
1763 return NGX_OK;
|
|
|
1764 }
|
|
|
1765 }
|
|
|
1766
|
|
|
1767 return NGX_DECLINED;
|
|
|
1768 }
|
|
|
1769
|
|
|
1770
|
|
|
1771 static ngx_int_t
|
|
294
|
1772 ngx_http_upstream_test_connect(ngx_connection_t *c)
|
|
|
1773 {
|
|
|
1774 int err;
|
|
|
1775 socklen_t len;
|
|
|
1776
|
|
|
1777 #if (NGX_HAVE_KQUEUE)
|
|
|
1778
|
|
|
1779 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) {
|
|
296
|
1780 if (c->write->pending_eof) {
|
|
336
|
1781 c->log->action = "connecting to upstream";
|
|
296
|
1782 (void) ngx_connection_error(c, c->write->kq_errno,
|
|
|
1783 "kevent() reported that connect() failed");
|
|
|
1784 return NGX_ERROR;
|
|
|
1785 }
|
|
294
|
1786
|
|
|
1787 } else
|
|
|
1788 #endif
|
|
|
1789 {
|
|
296
|
1790 err = 0;
|
|
|
1791 len = sizeof(int);
|
|
|
1792
|
|
|
1793 /*
|
|
|
1794 * BSDs and Linux return 0 and set a pending error in err
|
|
|
1795 * Solaris returns -1 and sets errno
|
|
|
1796 */
|
|
|
1797
|
|
|
1798 if (getsockopt(c->fd, SOL_SOCKET, SO_ERROR, (void *) &err, &len)
|
|
|
1799 == -1)
|
|
|
1800 {
|
|
|
1801 err = ngx_errno;
|
|
|
1802 }
|
|
|
1803
|
|
|
1804 if (err) {
|
|
336
|
1805 c->log->action = "connecting to upstream";
|
|
296
|
1806 (void) ngx_connection_error(c, err, "connect() failed");
|
|
|
1807 return NGX_ERROR;
|
|
|
1808 }
|
|
294
|
1809 }
|
|
|
1810
|
|
|
1811 return NGX_OK;
|
|
|
1812 }
|
|
|
1813
|
|
|
1814
|
|
464
|
1815 static ngx_int_t
|
|
|
1816 ngx_http_upstream_process_headers(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
1817 {
|
|
|
1818 ngx_str_t *uri, args;
|
|
|
1819 ngx_uint_t i, flags;
|
|
|
1820 ngx_list_part_t *part;
|
|
|
1821 ngx_table_elt_t *h;
|
|
|
1822 ngx_http_upstream_header_t *hh;
|
|
|
1823 ngx_http_upstream_main_conf_t *umcf;
|
|
|
1824
|
|
|
1825 umcf = ngx_http_get_module_main_conf(r, ngx_http_upstream_module);
|
|
|
1826
|
|
484
|
1827 if (u->headers_in.x_accel_redirect
|
|
|
1828 && !(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_REDIRECT))
|
|
|
1829 {
|
|
464
|
1830 ngx_http_upstream_finalize_request(r, u, NGX_DECLINED);
|
|
|
1831
|
|
|
1832 part = &u->headers_in.headers.part;
|
|
|
1833 h = part->elts;
|
|
|
1834
|
|
|
1835 for (i = 0; /* void */; i++) {
|
|
|
1836
|
|
|
1837 if (i >= part->nelts) {
|
|
|
1838 if (part->next == NULL) {
|
|
|
1839 break;
|
|
|
1840 }
|
|
|
1841
|
|
|
1842 part = part->next;
|
|
|
1843 h = part->elts;
|
|
|
1844 i = 0;
|
|
|
1845 }
|
|
|
1846
|
|
|
1847 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1848 h[i].lowcase_key, h[i].key.len);
|
|
|
1849
|
|
|
1850 if (hh && hh->redirect) {
|
|
|
1851 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1852 ngx_http_finalize_request(r,
|
|
|
1853 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1854 return NGX_DONE;
|
|
|
1855 }
|
|
|
1856 }
|
|
|
1857 }
|
|
|
1858
|
|
|
1859 uri = &u->headers_in.x_accel_redirect->value;
|
|
570
|
1860 ngx_str_null(&args);
|
|
530
|
1861 flags = NGX_HTTP_LOG_UNSAFE;
|
|
464
|
1862
|
|
|
1863 if (ngx_http_parse_unsafe_uri(r, uri, &args, &flags) != NGX_OK) {
|
|
|
1864 ngx_http_finalize_request(r, NGX_HTTP_NOT_FOUND);
|
|
|
1865 return NGX_DONE;
|
|
|
1866 }
|
|
|
1867
|
|
|
1868 if (r->method != NGX_HTTP_HEAD) {
|
|
|
1869 r->method = NGX_HTTP_GET;
|
|
|
1870 }
|
|
|
1871
|
|
|
1872 r->valid_unparsed_uri = 0;
|
|
|
1873
|
|
|
1874 ngx_http_internal_redirect(r, uri, &args);
|
|
526
|
1875 ngx_http_finalize_request(r, NGX_DONE);
|
|
464
|
1876 return NGX_DONE;
|
|
|
1877 }
|
|
|
1878
|
|
|
1879 part = &u->headers_in.headers.part;
|
|
|
1880 h = part->elts;
|
|
|
1881
|
|
|
1882 for (i = 0; /* void */; i++) {
|
|
|
1883
|
|
|
1884 if (i >= part->nelts) {
|
|
|
1885 if (part->next == NULL) {
|
|
|
1886 break;
|
|
|
1887 }
|
|
|
1888
|
|
|
1889 part = part->next;
|
|
|
1890 h = part->elts;
|
|
|
1891 i = 0;
|
|
|
1892 }
|
|
|
1893
|
|
|
1894 if (ngx_hash_find(&u->conf->hide_headers_hash, h[i].hash,
|
|
|
1895 h[i].lowcase_key, h[i].key.len))
|
|
|
1896 {
|
|
|
1897 continue;
|
|
|
1898 }
|
|
|
1899
|
|
|
1900 hh = ngx_hash_find(&umcf->headers_in_hash, h[i].hash,
|
|
|
1901 h[i].lowcase_key, h[i].key.len);
|
|
|
1902
|
|
|
1903 if (hh) {
|
|
|
1904 if (hh->copy_handler(r, &h[i], hh->conf) != NGX_OK) {
|
|
|
1905 ngx_http_upstream_finalize_request(r, u,
|
|
|
1906 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1907 return NGX_DONE;
|
|
|
1908 }
|
|
|
1909
|
|
|
1910 continue;
|
|
|
1911 }
|
|
|
1912
|
|
|
1913 if (ngx_http_upstream_copy_header_line(r, &h[i], 0) != NGX_OK) {
|
|
|
1914 ngx_http_upstream_finalize_request(r, u,
|
|
|
1915 NGX_HTTP_INTERNAL_SERVER_ERROR);
|
|
|
1916 return NGX_DONE;
|
|
|
1917 }
|
|
|
1918 }
|
|
|
1919
|
|
|
1920 if (r->headers_out.server && r->headers_out.server->value.data == NULL) {
|
|
|
1921 r->headers_out.server->hash = 0;
|
|
|
1922 }
|
|
|
1923
|
|
|
1924 if (r->headers_out.date && r->headers_out.date->value.data == NULL) {
|
|
|
1925 r->headers_out.date->hash = 0;
|
|
|
1926 }
|
|
|
1927
|
|
|
1928 r->headers_out.status = u->headers_in.status_n;
|
|
|
1929 r->headers_out.status_line = u->headers_in.status_line;
|
|
|
1930
|
|
|
1931 u->headers_in.content_length_n = r->headers_out.content_length_n;
|
|
|
1932
|
|
|
1933 if (r->headers_out.content_length_n != -1) {
|
|
|
1934 u->length = (size_t) r->headers_out.content_length_n;
|
|
|
1935
|
|
|
1936 } else {
|
|
|
1937 u->length = NGX_MAX_SIZE_T_VALUE;
|
|
|
1938 }
|
|
|
1939
|
|
|
1940 return NGX_OK;
|
|
|
1941 }
|
|
|
1942
|
|
|
1943
|
|
248
|
1944 static void
|
|
430
|
1945 ngx_http_upstream_process_body_in_memory(ngx_http_request_t *r,
|
|
|
1946 ngx_http_upstream_t *u)
|
|
248
|
1947 {
|
|
430
|
1948 size_t size;
|
|
|
1949 ssize_t n;
|
|
|
1950 ngx_buf_t *b;
|
|
|
1951 ngx_event_t *rev;
|
|
|
1952 ngx_connection_t *c;
|
|
|
1953
|
|
|
1954 c = u->peer.connection;
|
|
|
1955 rev = c->read;
|
|
248
|
1956
|
|
|
1957 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
1958 "http upstream process body on memory");
|
|
|
1959
|
|
|
1960 if (rev->timedout) {
|
|
|
1961 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
1962 ngx_http_upstream_finalize_request(r, u, NGX_ETIMEDOUT);
|
|
|
1963 return;
|
|
|
1964 }
|
|
|
1965
|
|
|
1966 b = &u->buffer;
|
|
|
1967
|
|
|
1968 for ( ;; ) {
|
|
|
1969
|
|
|
1970 size = b->end - b->last;
|
|
|
1971
|
|
|
1972 if (size == 0) {
|
|
|
1973 ngx_log_error(NGX_LOG_ALERT, c->log, 0,
|
|
590
|
1974 "upstream buffer is too small to read response");
|
|
248
|
1975 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1976 return;
|
|
|
1977 }
|
|
|
1978
|
|
|
1979 n = c->recv(c, b->last, size);
|
|
|
1980
|
|
|
1981 if (n == NGX_AGAIN) {
|
|
|
1982 break;
|
|
|
1983 }
|
|
|
1984
|
|
|
1985 if (n == 0 || n == NGX_ERROR) {
|
|
|
1986 ngx_http_upstream_finalize_request(r, u, n);
|
|
|
1987 return;
|
|
|
1988 }
|
|
|
1989
|
|
430
|
1990 u->state->response_length += n;
|
|
|
1991
|
|
248
|
1992 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
1993 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
1994 return;
|
|
|
1995 }
|
|
|
1996
|
|
|
1997 if (!rev->ready) {
|
|
|
1998 break;
|
|
|
1999 }
|
|
|
2000 }
|
|
|
2001
|
|
430
|
2002 if (ngx_handle_read_event(rev, 0) != NGX_OK) {
|
|
248
|
2003 ngx_http_upstream_finalize_request(r, u, NGX_ERROR);
|
|
|
2004 return;
|
|
|
2005 }
|
|
|
2006
|
|
|
2007 if (rev->active) {
|
|
|
2008 ngx_add_timer(rev, u->conf->read_timeout);
|
|
|
2009
|
|
|
2010 } else if (rev->timer_set) {
|
|
|
2011 ngx_del_timer(rev);
|
|
|
2012 }
|
|
230
|
2013 }
|
|
|
2014
|
|
|
2015
|
|
|
2016 static void
|
|
|
2017 ngx_http_upstream_send_response(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2018 {
|
|
|
2019 int tcp_nodelay;
|
|
430
|
2020 ssize_t n;
|
|
230
|
2021 ngx_int_t rc;
|
|
|
2022 ngx_event_pipe_t *p;
|
|
|
2023 ngx_connection_t *c;
|
|
|
2024 ngx_http_core_loc_conf_t *clcf;
|
|
|
2025
|
|
58
|
2026 rc = ngx_http_send_header(r);
|
|
28
|
2027
|
|
480
|
2028 if (rc == NGX_ERROR || rc > NGX_OK || r->post_action) {
|
|
34
|
2029 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
2030 return;
|
|
|
2031 }
|
|
|
2032
|
|
480
|
2033 c = r->connection;
|
|
|
2034
|
|
|
2035 if (r->header_only) {
|
|
|
2036
|
|
|
2037 if (u->cacheable || u->store) {
|
|
|
2038
|
|
|
2039 if (ngx_shutdown_socket(c->fd, NGX_WRITE_SHUTDOWN) == -1) {
|
|
|
2040 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2041 ngx_shutdown_socket_n " failed");
|
|
|
2042 }
|
|
|
2043
|
|
|
2044 r->read_event_handler = ngx_http_request_empty_handler;
|
|
|
2045 r->write_event_handler = ngx_http_request_empty_handler;
|
|
|
2046 c->error = 1;
|
|
|
2047
|
|
|
2048 } else {
|
|
|
2049 ngx_http_upstream_finalize_request(r, u, rc);
|
|
|
2050 return;
|
|
|
2051 }
|
|
|
2052 }
|
|
|
2053
|
|
28
|
2054 u->header_sent = 1;
|
|
|
2055
|
|
122
|
2056 if (r->request_body && r->request_body->temp_file) {
|
|
464
|
2057 ngx_pool_run_cleanup_file(r->pool, r->request_body->temp_file->file.fd);
|
|
|
2058 r->request_body->temp_file->file.fd = NGX_INVALID_FILE;
|
|
112
|
2059 }
|
|
|
2060
|
|
130
|
2061 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2062
|
|
198
|
2063 if (!u->buffering) {
|
|
130
|
2064
|
|
|
2065 if (u->input_filter == NULL) {
|
|
|
2066 u->input_filter_init = ngx_http_upstream_non_buffered_filter_init;
|
|
|
2067 u->input_filter = ngx_http_upstream_non_buffered_filter;
|
|
|
2068 u->input_filter_ctx = r;
|
|
|
2069 }
|
|
|
2070
|
|
428
|
2071 u->read_event_handler = ngx_http_upstream_process_non_buffered_upstream;
|
|
130
|
2072 r->write_event_handler =
|
|
|
2073 ngx_http_upstream_process_non_buffered_downstream;
|
|
|
2074
|
|
|
2075 r->limit_rate = 0;
|
|
|
2076
|
|
|
2077 if (u->input_filter_init(u->input_filter_ctx) == NGX_ERROR) {
|
|
|
2078 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2079 return;
|
|
|
2080 }
|
|
|
2081
|
|
132
|
2082 if (clcf->tcp_nodelay && c->tcp_nodelay == NGX_TCP_NODELAY_UNSET) {
|
|
|
2083 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0, "tcp_nodelay");
|
|
|
2084
|
|
|
2085 tcp_nodelay = 1;
|
|
|
2086
|
|
|
2087 if (setsockopt(c->fd, IPPROTO_TCP, TCP_NODELAY,
|
|
|
2088 (const void *) &tcp_nodelay, sizeof(int)) == -1)
|
|
|
2089 {
|
|
|
2090 ngx_connection_error(c, ngx_socket_errno,
|
|
|
2091 "setsockopt(TCP_NODELAY) failed");
|
|
|
2092 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2093 return;
|
|
|
2094 }
|
|
|
2095
|
|
|
2096 c->tcp_nodelay = NGX_TCP_NODELAY_SET;
|
|
|
2097 }
|
|
|
2098
|
|
430
|
2099 n = u->buffer.last - u->buffer.pos;
|
|
|
2100
|
|
|
2101 if (n) {
|
|
130
|
2102 u->buffer.last = u->buffer.pos;
|
|
|
2103
|
|
430
|
2104 u->state->response_length += n;
|
|
|
2105
|
|
|
2106 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
130
|
2107 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2108 return;
|
|
|
2109 }
|
|
|
2110
|
|
428
|
2111 ngx_http_upstream_process_non_buffered_downstream(r);
|
|
130
|
2112
|
|
|
2113 } else {
|
|
|
2114 u->buffer.pos = u->buffer.start;
|
|
|
2115 u->buffer.last = u->buffer.start;
|
|
|
2116
|
|
|
2117 if (ngx_http_send_special(r, NGX_HTTP_FLUSH) == NGX_ERROR) {
|
|
|
2118 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2119 return;
|
|
|
2120 }
|
|
336
|
2121
|
|
|
2122 if (u->peer.connection->read->ready) {
|
|
430
|
2123 ngx_http_upstream_process_non_buffered_upstream(r, u);
|
|
336
|
2124 }
|
|
130
|
2125 }
|
|
|
2126
|
|
|
2127 return;
|
|
|
2128 }
|
|
|
2129
|
|
28
|
2130 /* TODO: preallocate event_pipe bufs, look "Content-Length" */
|
|
|
2131
|
|
464
|
2132 #if (NGX_HTTP_CACHE)
|
|
|
2133
|
|
|
2134 if (r->cache && r->cache->file.fd != NGX_INVALID_FILE) {
|
|
|
2135 ngx_pool_run_cleanup_file(r->pool, r->cache->file.fd);
|
|
|
2136 r->cache->file.fd = NGX_INVALID_FILE;
|
|
28
|
2137 }
|
|
|
2138
|
|
588
|
2139 switch (ngx_http_test_predicates(r, u->conf->no_cache)) {
|
|
|
2140
|
|
|
2141 case NGX_ERROR:
|
|
|
2142 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2143 return;
|
|
|
2144
|
|
|
2145 case NGX_DECLINED:
|
|
|
2146 u->cacheable = 0;
|
|
|
2147 break;
|
|
|
2148
|
|
|
2149 default: /* NGX_OK */
|
|
|
2150
|
|
|
2151 if (u->cache_status == NGX_HTTP_CACHE_BYPASS) {
|
|
|
2152
|
|
|
2153 r->cache->min_uses = u->conf->cache_min_uses;
|
|
|
2154 r->cache->body_start = u->conf->buffer_size;
|
|
|
2155 r->cache->file_cache = u->conf->cache->data;
|
|
|
2156
|
|
|
2157 if (ngx_http_file_cache_create(r) != NGX_OK) {
|
|
|
2158 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2159 return;
|
|
|
2160 }
|
|
|
2161 }
|
|
|
2162
|
|
|
2163 break;
|
|
|
2164 }
|
|
|
2165
|
|
340
|
2166 if (u->cacheable) {
|
|
464
|
2167 time_t now, valid;
|
|
|
2168
|
|
472
|
2169 now = ngx_time();
|
|
|
2170
|
|
|
2171 valid = r->cache->valid_sec;
|
|
|
2172
|
|
|
2173 if (valid == 0) {
|
|
|
2174 valid = ngx_http_file_cache_valid(u->conf->cache_valid,
|
|
|
2175 u->headers_in.status_n);
|
|
|
2176 if (valid) {
|
|
|
2177 r->cache->valid_sec = now + valid;
|
|
|
2178 }
|
|
|
2179 }
|
|
|
2180
|
|
464
|
2181 if (valid) {
|
|
|
2182 r->cache->last_modified = r->headers_out.last_modified_time;
|
|
|
2183 r->cache->date = now;
|
|
|
2184 r->cache->body_start = (u_short) (u->buffer.pos - u->buffer.start);
|
|
|
2185
|
|
|
2186 ngx_http_file_cache_set_header(r, u->buffer.start);
|
|
|
2187
|
|
|
2188 } else {
|
|
|
2189 u->cacheable = 0;
|
|
480
|
2190 r->headers_out.last_modified_time = -1;
|
|
464
|
2191 }
|
|
28
|
2192 }
|
|
|
2193
|
|
478
|
2194 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2195 "http cacheable: %d", u->cacheable);
|
|
|
2196
|
|
524
|
2197 if (u->cacheable == 0 && r->cache) {
|
|
590
|
2198 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
|
524
|
2199 }
|
|
|
2200
|
|
28
|
2201 #endif
|
|
|
2202
|
|
130
|
2203 p = u->pipe;
|
|
28
|
2204
|
|
|
2205 p->output_filter = (ngx_event_pipe_output_filter_pt) ngx_http_output_filter;
|
|
|
2206 p->output_ctx = r;
|
|
|
2207 p->tag = u->output.tag;
|
|
126
|
2208 p->bufs = u->conf->bufs;
|
|
28
|
2209 p->busy_size = u->conf->busy_buffers_size;
|
|
|
2210 p->upstream = u->peer.connection;
|
|
132
|
2211 p->downstream = c;
|
|
28
|
2212 p->pool = r->pool;
|
|
132
|
2213 p->log = c->log;
|
|
126
|
2214
|
|
340
|
2215 p->cacheable = u->cacheable || u->store;
|
|
28
|
2216
|
|
50
|
2217 p->temp_file = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2218 if (p->temp_file == NULL) {
|
|
28
|
2219 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2220 return;
|
|
|
2221 }
|
|
|
2222
|
|
|
2223 p->temp_file->file.fd = NGX_INVALID_FILE;
|
|
132
|
2224 p->temp_file->file.log = c->log;
|
|
28
|
2225 p->temp_file->path = u->conf->temp_path;
|
|
|
2226 p->temp_file->pool = r->pool;
|
|
126
|
2227
|
|
464
|
2228 if (p->cacheable) {
|
|
28
|
2229 p->temp_file->persistent = 1;
|
|
318
|
2230
|
|
28
|
2231 } else {
|
|
216
|
2232 p->temp_file->log_level = NGX_LOG_WARN;
|
|
28
|
2233 p->temp_file->warn = "an upstream response is buffered "
|
|
|
2234 "to a temporary file";
|
|
|
2235 }
|
|
|
2236
|
|
|
2237 p->max_temp_file_size = u->conf->max_temp_file_size;
|
|
|
2238 p->temp_file_write_size = u->conf->temp_file_write_size;
|
|
|
2239
|
|
50
|
2240 p->preread_bufs = ngx_alloc_chain_link(r->pool);
|
|
|
2241 if (p->preread_bufs == NULL) {
|
|
28
|
2242 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2243 return;
|
|
|
2244 }
|
|
318
|
2245
|
|
130
|
2246 p->preread_bufs->buf = &u->buffer;
|
|
28
|
2247 p->preread_bufs->next = NULL;
|
|
130
|
2248 u->buffer.recycled = 1;
|
|
|
2249
|
|
|
2250 p->preread_size = u->buffer.last - u->buffer.pos;
|
|
28
|
2251
|
|
340
|
2252 if (u->cacheable) {
|
|
318
|
2253
|
|
28
|
2254 p->buf_to_file = ngx_calloc_buf(r->pool);
|
|
|
2255 if (p->buf_to_file == NULL) {
|
|
|
2256 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2257 return;
|
|
|
2258 }
|
|
318
|
2259
|
|
130
|
2260 p->buf_to_file->pos = u->buffer.start;
|
|
|
2261 p->buf_to_file->last = u->buffer.pos;
|
|
28
|
2262 p->buf_to_file->temporary = 1;
|
|
|
2263 }
|
|
|
2264
|
|
|
2265 if (ngx_event_flags & NGX_USE_AIO_EVENT) {
|
|
646
|
2266 /* the posted aio operation may corrupt a shadow buffer */
|
|
28
|
2267 p->single_buf = 1;
|
|
|
2268 }
|
|
|
2269
|
|
|
2270 /* TODO: p->free_bufs = 0 if use ngx_create_chain_of_bufs() */
|
|
|
2271 p->free_bufs = 1;
|
|
|
2272
|
|
|
2273 /*
|
|
130
|
2274 * event_pipe would do u->buffer.last += p->preread_size
|
|
28
|
2275 * as though these bytes were read
|
|
|
2276 */
|
|
130
|
2277 u->buffer.last = u->buffer.pos;
|
|
28
|
2278
|
|
|
2279 if (u->conf->cyclic_temp_file) {
|
|
|
2280
|
|
|
2281 /*
|
|
|
2282 * we need to disable the use of sendfile() if we use cyclic temp file
|
|
|
2283 * because the writing a new data may interfere with sendfile()
|
|
|
2284 * that uses the same kernel file pages (at least on FreeBSD)
|
|
|
2285 */
|
|
|
2286
|
|
|
2287 p->cyclic_temp_file = 1;
|
|
132
|
2288 c->sendfile = 0;
|
|
28
|
2289
|
|
|
2290 } else {
|
|
|
2291 p->cyclic_temp_file = 0;
|
|
|
2292 }
|
|
|
2293
|
|
|
2294 p->read_timeout = u->conf->read_timeout;
|
|
|
2295 p->send_timeout = clcf->send_timeout;
|
|
|
2296 p->send_lowat = clcf->send_lowat;
|
|
|
2297
|
|
428
|
2298 u->read_event_handler = ngx_http_upstream_process_upstream;
|
|
58
|
2299 r->write_event_handler = ngx_http_upstream_process_downstream;
|
|
28
|
2300
|
|
430
|
2301 ngx_http_upstream_process_upstream(r, u);
|
|
28
|
2302 }
|
|
|
2303
|
|
|
2304
|
|
36
|
2305 static void
|
|
130
|
2306 ngx_http_upstream_process_non_buffered_downstream(ngx_http_request_t *r)
|
|
|
2307 {
|
|
428
|
2308 ngx_event_t *wev;
|
|
|
2309 ngx_connection_t *c;
|
|
|
2310 ngx_http_upstream_t *u;
|
|
|
2311
|
|
|
2312 c = r->connection;
|
|
|
2313 u = r->upstream;
|
|
|
2314 wev = c->write;
|
|
|
2315
|
|
|
2316 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2317 "http upstream process non buffered downstream");
|
|
|
2318
|
|
|
2319 c->log->action = "sending to client";
|
|
|
2320
|
|
|
2321 if (wev->timedout) {
|
|
|
2322 c->timedout = 1;
|
|
|
2323 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
632
|
2324 ngx_http_upstream_finalize_request(r, u, NGX_HTTP_REQUEST_TIME_OUT);
|
|
428
|
2325 return;
|
|
|
2326 }
|
|
|
2327
|
|
|
2328 ngx_http_upstream_process_non_buffered_request(r, 1);
|
|
130
|
2329 }
|
|
|
2330
|
|
|
2331
|
|
|
2332 static void
|
|
430
|
2333 ngx_http_upstream_process_non_buffered_upstream(ngx_http_request_t *r,
|
|
|
2334 ngx_http_upstream_t *u)
|
|
428
|
2335 {
|
|
430
|
2336 ngx_connection_t *c;
|
|
|
2337
|
|
|
2338 c = u->peer.connection;
|
|
428
|
2339
|
|
|
2340 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2341 "http upstream process non buffered upstream");
|
|
|
2342
|
|
|
2343 c->log->action = "reading upstream";
|
|
|
2344
|
|
430
|
2345 if (c->read->timedout) {
|
|
428
|
2346 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2347 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2348 return;
|
|
|
2349 }
|
|
|
2350
|
|
|
2351 ngx_http_upstream_process_non_buffered_request(r, 0);
|
|
|
2352 }
|
|
|
2353
|
|
|
2354
|
|
|
2355 static void
|
|
|
2356 ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
|
|
|
2357 ngx_uint_t do_write)
|
|
130
|
2358 {
|
|
|
2359 size_t size;
|
|
|
2360 ssize_t n;
|
|
|
2361 ngx_buf_t *b;
|
|
132
|
2362 ngx_int_t rc;
|
|
428
|
2363 ngx_connection_t *downstream, *upstream;
|
|
130
|
2364 ngx_http_upstream_t *u;
|
|
|
2365 ngx_http_core_loc_conf_t *clcf;
|
|
|
2366
|
|
244
|
2367 u = r->upstream;
|
|
260
|
2368 downstream = r->connection;
|
|
|
2369 upstream = u->peer.connection;
|
|
130
|
2370
|
|
|
2371 b = &u->buffer;
|
|
|
2372
|
|
428
|
2373 do_write = do_write || u->length == 0;
|
|
130
|
2374
|
|
|
2375 for ( ;; ) {
|
|
|
2376
|
|
|
2377 if (do_write) {
|
|
|
2378
|
|
|
2379 if (u->out_bufs || u->busy_bufs) {
|
|
132
|
2380 rc = ngx_http_output_filter(r, u->out_bufs);
|
|
|
2381
|
|
|
2382 if (rc == NGX_ERROR) {
|
|
130
|
2383 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2384 return;
|
|
|
2385 }
|
|
|
2386
|
|
|
2387 ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs,
|
|
|
2388 &u->out_bufs, u->output.tag);
|
|
|
2389 }
|
|
|
2390
|
|
|
2391 if (u->busy_bufs == NULL) {
|
|
|
2392
|
|
|
2393 if (u->length == 0
|
|
260
|
2394 || upstream->read->eof
|
|
|
2395 || upstream->read->error)
|
|
130
|
2396 {
|
|
|
2397 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2398 return;
|
|
|
2399 }
|
|
|
2400
|
|
|
2401 b->pos = b->start;
|
|
|
2402 b->last = b->start;
|
|
|
2403 }
|
|
|
2404 }
|
|
|
2405
|
|
|
2406 size = b->end - b->last;
|
|
|
2407
|
|
|
2408 if (size > u->length) {
|
|
|
2409 size = u->length;
|
|
|
2410 }
|
|
|
2411
|
|
260
|
2412 if (size && upstream->read->ready) {
|
|
|
2413
|
|
|
2414 n = upstream->recv(upstream, b->last, size);
|
|
130
|
2415
|
|
|
2416 if (n == NGX_AGAIN) {
|
|
|
2417 break;
|
|
|
2418 }
|
|
|
2419
|
|
|
2420 if (n > 0) {
|
|
430
|
2421 u->state->response_length += n;
|
|
|
2422
|
|
130
|
2423 if (u->input_filter(u->input_filter_ctx, n) == NGX_ERROR) {
|
|
|
2424 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2425 return;
|
|
|
2426 }
|
|
|
2427 }
|
|
|
2428
|
|
|
2429 do_write = 1;
|
|
|
2430
|
|
|
2431 continue;
|
|
|
2432 }
|
|
|
2433
|
|
|
2434 break;
|
|
|
2435 }
|
|
|
2436
|
|
428
|
2437 clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
2438
|
|
260
|
2439 if (downstream->data == r) {
|
|
|
2440 if (ngx_handle_write_event(downstream->write, clcf->send_lowat)
|
|
426
|
2441 != NGX_OK)
|
|
132
|
2442 {
|
|
|
2443 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2444 return;
|
|
|
2445 }
|
|
130
|
2446 }
|
|
|
2447
|
|
276
|
2448 if (downstream->write->active && !downstream->write->ready) {
|
|
260
|
2449 ngx_add_timer(downstream->write, clcf->send_timeout);
|
|
|
2450
|
|
|
2451 } else if (downstream->write->timer_set) {
|
|
|
2452 ngx_del_timer(downstream->write);
|
|
130
|
2453 }
|
|
|
2454
|
|
426
|
2455 if (ngx_handle_read_event(upstream->read, 0) != NGX_OK) {
|
|
130
|
2456 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2457 return;
|
|
|
2458 }
|
|
|
2459
|
|
276
|
2460 if (upstream->read->active && !upstream->read->ready) {
|
|
260
|
2461 ngx_add_timer(upstream->read, u->conf->read_timeout);
|
|
|
2462
|
|
|
2463 } else if (upstream->read->timer_set) {
|
|
|
2464 ngx_del_timer(upstream->read);
|
|
130
|
2465 }
|
|
|
2466 }
|
|
|
2467
|
|
|
2468
|
|
|
2469 static ngx_int_t
|
|
|
2470 ngx_http_upstream_non_buffered_filter_init(void *data)
|
|
|
2471 {
|
|
|
2472 return NGX_OK;
|
|
|
2473 }
|
|
|
2474
|
|
|
2475
|
|
|
2476 static ngx_int_t
|
|
|
2477 ngx_http_upstream_non_buffered_filter(void *data, ssize_t bytes)
|
|
|
2478 {
|
|
|
2479 ngx_http_request_t *r = data;
|
|
|
2480
|
|
|
2481 ngx_buf_t *b;
|
|
|
2482 ngx_chain_t *cl, **ll;
|
|
|
2483 ngx_http_upstream_t *u;
|
|
|
2484
|
|
|
2485 u = r->upstream;
|
|
|
2486
|
|
|
2487 for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
|
|
2488 ll = &cl->next;
|
|
|
2489 }
|
|
|
2490
|
|
|
2491 cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
|
|
2492 if (cl == NULL) {
|
|
|
2493 return NGX_ERROR;
|
|
|
2494 }
|
|
|
2495
|
|
|
2496 *ll = cl;
|
|
|
2497
|
|
|
2498 cl->buf->flush = 1;
|
|
|
2499 cl->buf->memory = 1;
|
|
|
2500
|
|
|
2501 b = &u->buffer;
|
|
|
2502
|
|
|
2503 cl->buf->pos = b->last;
|
|
|
2504 b->last += bytes;
|
|
|
2505 cl->buf->last = b->last;
|
|
366
|
2506 cl->buf->tag = u->output.tag;
|
|
130
|
2507
|
|
|
2508 if (u->length == NGX_MAX_SIZE_T_VALUE) {
|
|
|
2509 return NGX_OK;
|
|
|
2510 }
|
|
|
2511
|
|
|
2512 u->length -= bytes;
|
|
|
2513
|
|
|
2514 return NGX_OK;
|
|
|
2515 }
|
|
|
2516
|
|
|
2517
|
|
|
2518 static void
|
|
58
|
2519 ngx_http_upstream_process_downstream(ngx_http_request_t *r)
|
|
|
2520 {
|
|
428
|
2521 ngx_event_t *wev;
|
|
|
2522 ngx_connection_t *c;
|
|
58
|
2523 ngx_event_pipe_t *p;
|
|
28
|
2524 ngx_http_upstream_t *u;
|
|
|
2525
|
|
428
|
2526 c = r->connection;
|
|
28
|
2527 u = r->upstream;
|
|
130
|
2528 p = u->pipe;
|
|
428
|
2529 wev = c->write;
|
|
|
2530
|
|
|
2531 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2532 "http upstream process downstream");
|
|
|
2533
|
|
|
2534 c->log->action = "sending to client";
|
|
|
2535
|
|
|
2536 if (wev->timedout) {
|
|
|
2537
|
|
|
2538 if (wev->delayed) {
|
|
|
2539
|
|
|
2540 wev->timedout = 0;
|
|
|
2541 wev->delayed = 0;
|
|
|
2542
|
|
|
2543 if (!wev->ready) {
|
|
|
2544 ngx_add_timer(wev, p->send_timeout);
|
|
|
2545
|
|
|
2546 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
|
2547 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2548 }
|
|
|
2549
|
|
|
2550 return;
|
|
|
2551 }
|
|
|
2552
|
|
|
2553 if (ngx_event_pipe(p, wev->write) == NGX_ABORT) {
|
|
|
2554 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2555 return;
|
|
76
|
2556 }
|
|
28
|
2557
|
|
|
2558 } else {
|
|
428
|
2559 p->downstream_error = 1;
|
|
|
2560 c->timedout = 1;
|
|
|
2561 ngx_connection_error(c, NGX_ETIMEDOUT, "client timed out");
|
|
28
|
2562 }
|
|
|
2563
|
|
|
2564 } else {
|
|
428
|
2565
|
|
|
2566 if (wev->delayed) {
|
|
|
2567
|
|
76
|
2568 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2569 "http downstream delayed");
|
|
|
2570
|
|
428
|
2571 if (ngx_handle_write_event(wev, p->send_lowat) != NGX_OK) {
|
|
426
|
2572 ngx_http_upstream_finalize_request(r, u, 0);
|
|
76
|
2573 }
|
|
|
2574
|
|
|
2575 return;
|
|
|
2576 }
|
|
|
2577
|
|
428
|
2578 if (ngx_event_pipe(p, 1) == NGX_ABORT) {
|
|
28
|
2579 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2580 return;
|
|
|
2581 }
|
|
|
2582 }
|
|
126
|
2583
|
|
428
|
2584 ngx_http_upstream_process_request(r);
|
|
|
2585 }
|
|
|
2586
|
|
|
2587
|
|
|
2588 static void
|
|
430
|
2589 ngx_http_upstream_process_upstream(ngx_http_request_t *r,
|
|
|
2590 ngx_http_upstream_t *u)
|
|
428
|
2591 {
|
|
430
|
2592 ngx_connection_t *c;
|
|
|
2593
|
|
|
2594 c = u->peer.connection;
|
|
428
|
2595
|
|
|
2596 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, c->log, 0,
|
|
|
2597 "http upstream process upstream");
|
|
|
2598
|
|
|
2599 c->log->action = "reading upstream";
|
|
|
2600
|
|
430
|
2601 if (c->read->timedout) {
|
|
|
2602 u->pipe->upstream_error = 1;
|
|
428
|
2603 ngx_connection_error(c, NGX_ETIMEDOUT, "upstream timed out");
|
|
|
2604
|
|
|
2605 } else {
|
|
430
|
2606 if (ngx_event_pipe(u->pipe, 0) == NGX_ABORT) {
|
|
428
|
2607 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2608 return;
|
|
|
2609 }
|
|
|
2610 }
|
|
|
2611
|
|
|
2612 ngx_http_upstream_process_request(r);
|
|
|
2613 }
|
|
|
2614
|
|
|
2615
|
|
|
2616 static void
|
|
|
2617 ngx_http_upstream_process_request(ngx_http_request_t *r)
|
|
|
2618 {
|
|
|
2619 ngx_temp_file_t *tf;
|
|
|
2620 ngx_event_pipe_t *p;
|
|
|
2621 ngx_http_upstream_t *u;
|
|
|
2622
|
|
|
2623 u = r->upstream;
|
|
|
2624 p = u->pipe;
|
|
|
2625
|
|
28
|
2626 if (u->peer.connection) {
|
|
|
2627
|
|
318
|
2628 if (u->store) {
|
|
|
2629
|
|
440
|
2630 if (p->upstream_eof || p->upstream_done) {
|
|
438
|
2631
|
|
646
|
2632 tf = u->pipe->temp_file;
|
|
|
2633
|
|
438
|
2634 if (u->headers_in.status_n == NGX_HTTP_OK
|
|
|
2635 && (u->headers_in.content_length_n == -1
|
|
|
2636 || (u->headers_in.content_length_n == tf->offset)))
|
|
|
2637 {
|
|
|
2638 ngx_http_upstream_store(r, u);
|
|
646
|
2639 u->store = 0;
|
|
318
|
2640 }
|
|
|
2641 }
|
|
|
2642 }
|
|
|
2643
|
|
464
|
2644 #if (NGX_HTTP_CACHE)
|
|
|
2645
|
|
|
2646 if (u->cacheable) {
|
|
|
2647
|
|
|
2648 if (p->upstream_done) {
|
|
|
2649 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2650
|
|
|
2651 } else if (p->upstream_eof) {
|
|
|
2652
|
|
|
2653 /* TODO: check length & update cache */
|
|
|
2654
|
|
|
2655 ngx_http_file_cache_update(r, u->pipe->temp_file);
|
|
|
2656
|
|
|
2657 } else if (p->upstream_error) {
|
|
590
|
2658 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
|
28
|
2659 }
|
|
|
2660 }
|
|
|
2661
|
|
|
2662 #endif
|
|
|
2663
|
|
|
2664 if (p->upstream_done || p->upstream_eof || p->upstream_error) {
|
|
428
|
2665 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2666 "http upstream exit: %p", p->out);
|
|
28
|
2667 #if 0
|
|
|
2668 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2669 #endif
|
|
|
2670 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2671 return;
|
|
|
2672 }
|
|
|
2673 }
|
|
|
2674
|
|
|
2675 if (p->downstream_error) {
|
|
428
|
2676 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
32
|
2677 "http upstream downstream error");
|
|
28
|
2678
|
|
482
|
2679 if (!u->cacheable && !u->store && u->peer.connection) {
|
|
28
|
2680 ngx_http_upstream_finalize_request(r, u, 0);
|
|
|
2681 }
|
|
|
2682 }
|
|
|
2683 }
|
|
|
2684
|
|
|
2685
|
|
36
|
2686 static void
|
|
318
|
2687 ngx_http_upstream_store(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
|
2688 {
|
|
370
|
2689 size_t root;
|
|
|
2690 time_t lm;
|
|
|
2691 ngx_str_t path;
|
|
|
2692 ngx_temp_file_t *tf;
|
|
|
2693 ngx_ext_rename_file_t ext;
|
|
318
|
2694
|
|
358
|
2695 tf = u->pipe->temp_file;
|
|
|
2696
|
|
|
2697 if (tf->file.fd == NGX_INVALID_FILE) {
|
|
318
|
2698
|
|
|
2699 /* create file for empty 200 response */
|
|
|
2700
|
|
|
2701 tf = ngx_pcalloc(r->pool, sizeof(ngx_temp_file_t));
|
|
|
2702 if (tf == NULL) {
|
|
|
2703 return;
|
|
|
2704 }
|
|
|
2705
|
|
|
2706 tf->file.fd = NGX_INVALID_FILE;
|
|
|
2707 tf->file.log = r->connection->log;
|
|
|
2708 tf->path = u->conf->temp_path;
|
|
|
2709 tf->pool = r->pool;
|
|
|
2710 tf->persistent = 1;
|
|
|
2711
|
|
|
2712 if (ngx_create_temp_file(&tf->file, tf->path, tf->pool,
|
|
|
2713 tf->persistent, tf->clean, tf->access)
|
|
|
2714 != NGX_OK)
|
|
|
2715 {
|
|
|
2716 return;
|
|
|
2717 }
|
|
|
2718
|
|
|
2719 u->pipe->temp_file = tf;
|
|
|
2720 }
|
|
|
2721
|
|
370
|
2722 ext.access = u->conf->store_access;
|
|
430
|
2723 ext.path_access = u->conf->store_access;
|
|
370
|
2724 ext.time = -1;
|
|
|
2725 ext.create_path = 1;
|
|
|
2726 ext.delete_file = 1;
|
|
|
2727 ext.log = r->connection->log;
|
|
318
|
2728
|
|
356
|
2729 if (u->headers_in.last_modified) {
|
|
|
2730
|
|
370
|
2731 lm = ngx_http_parse_time(u->headers_in.last_modified->value.data,
|
|
|
2732 u->headers_in.last_modified->value.len);
|
|
318
|
2733
|
|
|
2734 if (lm != NGX_ERROR) {
|
|
370
|
2735 ext.time = lm;
|
|
|
2736 ext.fd = tf->file.fd;
|
|
318
|
2737 }
|
|
|
2738 }
|
|
|
2739
|
|
320
|
2740 if (u->conf->store_lengths == NULL) {
|
|
|
2741
|
|
|
2742 ngx_http_map_uri_to_path(r, &path, &root, 0);
|
|
|
2743
|
|
|
2744 } else {
|
|
|
2745 if (ngx_http_script_run(r, &path, u->conf->store_lengths->elts, 0,
|
|
|
2746 u->conf->store_values->elts)
|
|
|
2747 == NULL)
|
|
|
2748 {
|
|
|
2749 return;
|
|
|
2750 }
|
|
|
2751 }
|
|
318
|
2752
|
|
516
|
2753 path.len--;
|
|
|
2754
|
|
318
|
2755 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
370
|
2756 "upstream stores \"%s\" to \"%s\"",
|
|
|
2757 tf->file.name.data, path.data);
|
|
|
2758
|
|
|
2759 (void) ngx_ext_rename_file(&tf->file.name, &path, &ext);
|
|
318
|
2760 }
|
|
|
2761
|
|
|
2762
|
|
|
2763 static void
|
|
430
|
2764 ngx_http_upstream_dummy_handler(ngx_http_request_t *r, ngx_http_upstream_t *u)
|
|
28
|
2765 {
|
|
430
|
2766 ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
28
|
2767 "http upstream dummy handler");
|
|
|
2768 }
|
|
|
2769
|
|
|
2770
|
|
36
|
2771 static void
|
|
|
2772 ngx_http_upstream_next(ngx_http_request_t *r, ngx_http_upstream_t *u,
|
|
|
2773 ngx_uint_t ft_type)
|
|
28
|
2774 {
|
|
260
|
2775 ngx_uint_t status, state;
|
|
28
|
2776
|
|
|
2777 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
260
|
2778 "http next upstream, %xi", ft_type);
|
|
28
|
2779
|
|
|
2780 #if 0
|
|
|
2781 ngx_http_busy_unlock(u->conf->busy_lock, &u->busy_lock);
|
|
|
2782 #endif
|
|
|
2783
|
|
74
|
2784 if (ft_type == NGX_HTTP_UPSTREAM_FT_HTTP_404) {
|
|
260
|
2785 state = NGX_PEER_NEXT;
|
|
74
|
2786 } else {
|
|
260
|
2787 state = NGX_PEER_FAILED;
|
|
28
|
2788 }
|
|
74
|
2789
|
|
326
|
2790 if (ft_type != NGX_HTTP_UPSTREAM_FT_NOLIVE) {
|
|
|
2791 u->peer.free(&u->peer, u->peer.data, state);
|
|
|
2792 }
|
|
74
|
2793
|
|
28
|
2794 if (ft_type == NGX_HTTP_UPSTREAM_FT_TIMEOUT) {
|
|
|
2795 ngx_log_error(NGX_LOG_ERR, r->connection->log, NGX_ETIMEDOUT,
|
|
|
2796 "upstream timed out");
|
|
|
2797 }
|
|
126
|
2798
|
|
28
|
2799 if (u->peer.cached && ft_type == NGX_HTTP_UPSTREAM_FT_ERROR) {
|
|
|
2800 status = 0;
|
|
|
2801
|
|
|
2802 } else {
|
|
|
2803 switch(ft_type) {
|
|
|
2804
|
|
|
2805 case NGX_HTTP_UPSTREAM_FT_TIMEOUT:
|
|
|
2806 status = NGX_HTTP_GATEWAY_TIME_OUT;
|
|
|
2807 break;
|
|
|
2808
|
|
|
2809 case NGX_HTTP_UPSTREAM_FT_HTTP_500:
|
|
|
2810 status = NGX_HTTP_INTERNAL_SERVER_ERROR;
|
|
|
2811 break;
|
|
|
2812
|
|
|
2813 case NGX_HTTP_UPSTREAM_FT_HTTP_404:
|
|
|
2814 status = NGX_HTTP_NOT_FOUND;
|
|
|
2815 break;
|
|
|
2816
|
|
|
2817 /*
|
|
|
2818 * NGX_HTTP_UPSTREAM_FT_BUSY_LOCK and NGX_HTTP_UPSTREAM_FT_MAX_WAITING
|
|
|
2819 * never reach here
|
|
|
2820 */
|
|
|
2821
|
|
|
2822 default:
|
|
|
2823 status = NGX_HTTP_BAD_GATEWAY;
|
|
|
2824 }
|
|
|
2825 }
|
|
|
2826
|
|
132
|
2827 if (r->connection->error) {
|
|
28
|
2828 ngx_http_upstream_finalize_request(r, u,
|
|
|
2829 NGX_HTTP_CLIENT_CLOSED_REQUEST);
|
|
|
2830 return;
|
|
|
2831 }
|
|
|
2832
|
|
|
2833 if (status) {
|
|
|
2834 u->state->status = status;
|
|
|
2835
|
|
74
|
2836 if (u->peer.tries == 0 || !(u->conf->next_upstream & ft_type)) {
|
|
28
|
2837
|
|
|
2838 #if (NGX_HTTP_CACHE)
|
|
|
2839
|
|
502
|
2840 if (u->cache_status == NGX_HTTP_CACHE_EXPIRED
|
|
|
2841 && (u->conf->cache_use_stale & ft_type))
|
|
|
2842 {
|
|
486
|
2843 ngx_int_t rc;
|
|
|
2844
|
|
|
2845 rc = u->reinit_request(r);
|
|
|
2846
|
|
|
2847 if (rc == NGX_OK) {
|
|
502
|
2848 u->cache_status = NGX_HTTP_CACHE_STALE;
|
|
486
|
2849 rc = ngx_http_upstream_cache_send(r, u);
|
|
|
2850 }
|
|
|
2851
|
|
|
2852 ngx_http_upstream_finalize_request(r, u, rc);
|
|
28
|
2853 return;
|
|
|
2854 }
|
|
|
2855 #endif
|
|
|
2856
|
|
|
2857 ngx_http_upstream_finalize_request(r, u, status);
|
|
|
2858 return;
|
|
|
2859 }
|
|
|
2860 }
|
|
|
2861
|
|
|
2862 if (u->peer.connection) {
|
|
|
2863 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2864 "close http upstream connection: %d",
|
|
|
2865 u->peer.connection->fd);
|
|
126
|
2866 #if (NGX_HTTP_SSL)
|
|
260
|
2867
|
|
126
|
2868 if (u->peer.connection->ssl) {
|
|
260
|
2869 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2870 u->peer.connection->ssl->no_send_shutdown = 1;
|
|
|
2871
|
|
|
2872 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2873 }
|
|
|
2874 #endif
|
|
260
|
2875
|
|
28
|
2876 ngx_close_connection(u->peer.connection);
|
|
642
|
2877 u->peer.connection = NULL;
|
|
28
|
2878 }
|
|
|
2879
|
|
|
2880 #if 0
|
|
|
2881 if (u->conf->busy_lock && !u->busy_locked) {
|
|
|
2882 ngx_http_upstream_busy_lock(p);
|
|
|
2883 return;
|
|
|
2884 }
|
|
|
2885 #endif
|
|
|
2886
|
|
|
2887 ngx_http_upstream_connect(r, u);
|
|
|
2888 }
|
|
|
2889
|
|
|
2890
|
|
36
|
2891 static void
|
|
118
|
2892 ngx_http_upstream_cleanup(void *data)
|
|
|
2893 {
|
|
|
2894 ngx_http_request_t *r = data;
|
|
|
2895
|
|
356
|
2896 ngx_http_upstream_t *u;
|
|
|
2897
|
|
118
|
2898 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2899 "cleanup http upstream request: \"%V\"", &r->uri);
|
|
|
2900
|
|
356
|
2901 u = r->upstream;
|
|
|
2902
|
|
|
2903 if (u->resolved && u->resolved->ctx) {
|
|
|
2904 ngx_resolve_name_done(u->resolved->ctx);
|
|
530
|
2905 u->resolved->ctx = NULL;
|
|
348
|
2906 }
|
|
|
2907
|
|
356
|
2908 ngx_http_upstream_finalize_request(r, u, NGX_DONE);
|
|
118
|
2909 }
|
|
|
2910
|
|
|
2911
|
|
|
2912 static void
|
|
36
|
2913 ngx_http_upstream_finalize_request(ngx_http_request_t *r,
|
|
|
2914 ngx_http_upstream_t *u, ngx_int_t rc)
|
|
28
|
2915 {
|
|
262
|
2916 ngx_time_t *tp;
|
|
112
|
2917
|
|
32
|
2918 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2919 "finalize http upstream request: %i", rc);
|
|
28
|
2920
|
|
432
|
2921 if (u->cleanup) {
|
|
|
2922 *u->cleanup = NULL;
|
|
562
|
2923 u->cleanup = NULL;
|
|
432
|
2924 }
|
|
118
|
2925
|
|
530
|
2926 if (u->resolved && u->resolved->ctx) {
|
|
|
2927 ngx_resolve_name_done(u->resolved->ctx);
|
|
|
2928 u->resolved->ctx = NULL;
|
|
|
2929 }
|
|
|
2930
|
|
348
|
2931 if (u->state && u->state->response_sec) {
|
|
112
|
2932 tp = ngx_timeofday();
|
|
262
|
2933 u->state->response_sec = tp->sec - u->state->response_sec;
|
|
|
2934 u->state->response_msec = tp->msec - u->state->response_msec;
|
|
430
|
2935
|
|
|
2936 if (u->pipe) {
|
|
|
2937 u->state->response_length = u->pipe->read_length;
|
|
|
2938 }
|
|
112
|
2939 }
|
|
|
2940
|
|
28
|
2941 u->finalize_request(r, rc);
|
|
|
2942
|
|
348
|
2943 if (u->peer.free) {
|
|
|
2944 u->peer.free(&u->peer, u->peer.data, 0);
|
|
|
2945 }
|
|
260
|
2946
|
|
28
|
2947 if (u->peer.connection) {
|
|
260
|
2948
|
|
126
|
2949 #if (NGX_HTTP_SSL)
|
|
|
2950
|
|
|
2951 /* TODO: do not shutdown persistent connection */
|
|
|
2952
|
|
|
2953 if (u->peer.connection->ssl) {
|
|
260
|
2954
|
|
|
2955 /*
|
|
|
2956 * We send the "close notify" shutdown alert to the upstream only
|
|
|
2957 * and do not wait its "close notify" shutdown alert.
|
|
|
2958 * It is acceptable according to the TLS standard.
|
|
|
2959 */
|
|
|
2960
|
|
|
2961 u->peer.connection->ssl->no_wait_shutdown = 1;
|
|
|
2962
|
|
|
2963 (void) ngx_ssl_shutdown(u->peer.connection);
|
|
126
|
2964 }
|
|
|
2965 #endif
|
|
260
|
2966
|
|
|
2967 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2968 "close http upstream connection: %d",
|
|
|
2969 u->peer.connection->fd);
|
|
|
2970
|
|
28
|
2971 ngx_close_connection(u->peer.connection);
|
|
|
2972 }
|
|
|
2973
|
|
32
|
2974 u->peer.connection = NULL;
|
|
|
2975
|
|
130
|
2976 if (u->pipe && u->pipe->temp_file) {
|
|
28
|
2977 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
2978 "http upstream temp fd: %d",
|
|
130
|
2979 u->pipe->temp_file->file.fd);
|
|
28
|
2980 }
|
|
|
2981
|
|
646
|
2982 if (u->store && u->pipe && u->pipe->temp_file
|
|
|
2983 && u->pipe->temp_file->file.fd != NGX_INVALID_FILE)
|
|
|
2984 {
|
|
|
2985 if (ngx_delete_file(u->pipe->temp_file->file.name.data)
|
|
|
2986 == NGX_FILE_ERROR)
|
|
|
2987 {
|
|
|
2988 ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno,
|
|
|
2989 ngx_delete_file_n " \"%s\" failed",
|
|
|
2990 u->pipe->temp_file->file.name.data);
|
|
|
2991 }
|
|
|
2992 }
|
|
|
2993
|
|
464
|
2994 #if (NGX_HTTP_CACHE)
|
|
|
2995
|
|
630
|
2996 if (r->cache) {
|
|
|
2997
|
|
|
2998 if (u->cacheable) {
|
|
|
2999
|
|
|
3000 if (rc == NGX_HTTP_BAD_GATEWAY || rc == NGX_HTTP_GATEWAY_TIME_OUT) {
|
|
|
3001 time_t valid;
|
|
|
3002
|
|
|
3003 valid = ngx_http_file_cache_valid(u->conf->cache_valid, rc);
|
|
|
3004
|
|
|
3005 if (valid) {
|
|
|
3006 r->cache->valid_sec = ngx_time() + valid;
|
|
|
3007 r->cache->error = rc;
|
|
|
3008 }
|
|
464
|
3009 }
|
|
|
3010 }
|
|
|
3011
|
|
590
|
3012 ngx_http_file_cache_free(r->cache, u->pipe->temp_file);
|
|
28
|
3013 }
|
|
464
|
3014
|
|
28
|
3015 #endif
|
|
|
3016
|
|
478
|
3017 if (u->header_sent
|
|
632
|
3018 && rc != NGX_HTTP_REQUEST_TIME_OUT
|
|
478
|
3019 && (rc == NGX_ERROR || rc >= NGX_HTTP_SPECIAL_RESPONSE))
|
|
464
|
3020 {
|
|
|
3021 rc = 0;
|
|
|
3022 }
|
|
|
3023
|
|
64
|
3024 if (rc == NGX_DECLINED) {
|
|
|
3025 return;
|
|
|
3026 }
|
|
|
3027
|
|
32
|
3028 r->connection->log->action = "sending to client";
|
|
|
3029
|
|
638
|
3030 if (rc == 0
|
|
|
3031 #if (NGX_HTTP_CACHE)
|
|
|
3032 && !r->cached
|
|
|
3033 #endif
|
|
|
3034 )
|
|
|
3035 {
|
|
426
|
3036 rc = ngx_http_send_special(r, NGX_HTTP_LAST);
|
|
28
|
3037 }
|
|
|
3038
|
|
|
3039 ngx_http_finalize_request(r, rc);
|
|
|
3040 }
|
|
|
3041
|
|
|
3042
|
|
58
|
3043 static ngx_int_t
|
|
|
3044 ngx_http_upstream_process_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3045 ngx_uint_t offset)
|
|
126
|
3046 {
|
|
58
|
3047 ngx_table_elt_t **ph;
|
|
126
|
3048
|
|
58
|
3049 ph = (ngx_table_elt_t **) ((char *) &r->upstream->headers_in + offset);
|
|
|
3050
|
|
|
3051 if (*ph == NULL) {
|
|
|
3052 *ph = h;
|
|
|
3053 }
|
|
|
3054
|
|
|
3055 return NGX_OK;
|
|
|
3056 }
|
|
|
3057
|
|
|
3058
|
|
|
3059 static ngx_int_t
|
|
472
|
3060 ngx_http_upstream_ignore_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3061 ngx_uint_t offset)
|
|
|
3062 {
|
|
|
3063 return NGX_OK;
|
|
|
3064 }
|
|
|
3065
|
|
|
3066
|
|
|
3067 static ngx_int_t
|
|
584
|
3068 ngx_http_upstream_process_set_cookie(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3069 ngx_uint_t offset)
|
|
|
3070 {
|
|
|
3071 #if (NGX_HTTP_CACHE)
|
|
|
3072 ngx_http_upstream_t *u;
|
|
|
3073
|
|
|
3074 u = r->upstream;
|
|
|
3075
|
|
|
3076 if (!(u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_SET_COOKIE)) {
|
|
|
3077 u->cacheable = 0;
|
|
|
3078 }
|
|
|
3079 #endif
|
|
|
3080
|
|
|
3081 return NGX_OK;
|
|
|
3082 }
|
|
|
3083
|
|
|
3084
|
|
|
3085 static ngx_int_t
|
|
472
|
3086 ngx_http_upstream_process_cache_control(ngx_http_request_t *r,
|
|
58
|
3087 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3088 {
|
|
484
|
3089 ngx_array_t *pa;
|
|
|
3090 ngx_table_elt_t **ph;
|
|
|
3091 ngx_http_upstream_t *u;
|
|
|
3092
|
|
|
3093 u = r->upstream;
|
|
|
3094 pa = &u->headers_in.cache_control;
|
|
58
|
3095
|
|
|
3096 if (pa->elts == NULL) {
|
|
|
3097 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3098 {
|
|
|
3099 return NGX_ERROR;
|
|
|
3100 }
|
|
|
3101 }
|
|
|
3102
|
|
|
3103 ph = ngx_array_push(pa);
|
|
|
3104 if (ph == NULL) {
|
|
|
3105 return NGX_ERROR;
|
|
|
3106 }
|
|
|
3107
|
|
|
3108 *ph = h;
|
|
|
3109
|
|
480
|
3110 #if (NGX_HTTP_CACHE)
|
|
|
3111 {
|
|
|
3112 u_char *p, *last;
|
|
|
3113 ngx_int_t n;
|
|
|
3114
|
|
484
|
3115 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_CACHE_CONTROL) {
|
|
|
3116 return NGX_OK;
|
|
|
3117 }
|
|
|
3118
|
|
472
|
3119 if (r->cache == NULL) {
|
|
|
3120 return NGX_OK;
|
|
|
3121 }
|
|
|
3122
|
|
|
3123 if (r->cache->valid_sec != 0) {
|
|
|
3124 return NGX_OK;
|
|
|
3125 }
|
|
|
3126
|
|
570
|
3127 p = h->value.data;
|
|
|
3128 last = p + h->value.len;
|
|
|
3129
|
|
|
3130 if (ngx_strlcasestrn(p, last, (u_char *) "no-cache", 8 - 1) != NULL
|
|
|
3131 || ngx_strlcasestrn(p, last, (u_char *) "no-store", 8 - 1) != NULL
|
|
|
3132 || ngx_strlcasestrn(p, last, (u_char *) "private", 7 - 1) != NULL)
|
|
472
|
3133 {
|
|
484
|
3134 u->cacheable = 0;
|
|
472
|
3135 return NGX_OK;
|
|
|
3136 }
|
|
|
3137
|
|
570
|
3138 p = ngx_strlcasestrn(p, last, (u_char *) "max-age=", 8 - 1);
|
|
472
|
3139
|
|
|
3140 if (p == NULL) {
|
|
|
3141 return NGX_OK;
|
|
|
3142 }
|
|
|
3143
|
|
|
3144 n = 0;
|
|
|
3145
|
|
|
3146 for (p += 8; p < last; p++) {
|
|
536
|
3147 if (*p == ',' || *p == ';' || *p == ' ') {
|
|
472
|
3148 break;
|
|
|
3149 }
|
|
|
3150
|
|
|
3151 if (*p >= '0' && *p <= '9') {
|
|
|
3152 n = n * 10 + *p - '0';
|
|
|
3153 continue;
|
|
|
3154 }
|
|
|
3155
|
|
484
|
3156 u->cacheable = 0;
|
|
472
|
3157 return NGX_OK;
|
|
|
3158 }
|
|
|
3159
|
|
|
3160 if (n == 0) {
|
|
484
|
3161 u->cacheable = 0;
|
|
472
|
3162 return NGX_OK;
|
|
|
3163 }
|
|
|
3164
|
|
|
3165 r->cache->valid_sec = ngx_time() + n;
|
|
480
|
3166 }
|
|
|
3167 #endif
|
|
|
3168
|
|
58
|
3169 return NGX_OK;
|
|
|
3170 }
|
|
|
3171
|
|
|
3172
|
|
|
3173 static ngx_int_t
|
|
472
|
3174 ngx_http_upstream_process_expires(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
58
|
3175 ngx_uint_t offset)
|
|
|
3176 {
|
|
484
|
3177 ngx_http_upstream_t *u;
|
|
|
3178
|
|
|
3179 u = r->upstream;
|
|
|
3180 u->headers_in.expires = h;
|
|
480
|
3181
|
|
|
3182 #if (NGX_HTTP_CACHE)
|
|
|
3183 {
|
|
472
|
3184 time_t expires;
|
|
|
3185
|
|
484
|
3186 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_EXPIRES) {
|
|
|
3187 return NGX_OK;
|
|
|
3188 }
|
|
|
3189
|
|
472
|
3190 if (r->cache == NULL) {
|
|
|
3191 return NGX_OK;
|
|
|
3192 }
|
|
|
3193
|
|
|
3194 if (r->cache->valid_sec != 0) {
|
|
|
3195 return NGX_OK;
|
|
|
3196 }
|
|
|
3197
|
|
|
3198 expires = ngx_http_parse_time(h->value.data, h->value.len);
|
|
|
3199
|
|
|
3200 if (expires == NGX_ERROR || expires < ngx_time()) {
|
|
484
|
3201 u->cacheable = 0;
|
|
472
|
3202 return NGX_OK;
|
|
|
3203 }
|
|
|
3204
|
|
|
3205 r->cache->valid_sec = expires;
|
|
480
|
3206 }
|
|
|
3207 #endif
|
|
472
|
3208
|
|
|
3209 return NGX_OK;
|
|
|
3210 }
|
|
|
3211
|
|
|
3212
|
|
|
3213 static ngx_int_t
|
|
|
3214 ngx_http_upstream_process_accel_expires(ngx_http_request_t *r,
|
|
|
3215 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3216 {
|
|
484
|
3217 ngx_http_upstream_t *u;
|
|
|
3218
|
|
|
3219 u = r->upstream;
|
|
|
3220 u->headers_in.x_accel_expires = h;
|
|
480
|
3221
|
|
|
3222 #if (NGX_HTTP_CACHE)
|
|
|
3223 {
|
|
472
|
3224 u_char *p;
|
|
|
3225 size_t len;
|
|
|
3226 ngx_int_t n;
|
|
|
3227
|
|
484
|
3228 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_EXPIRES) {
|
|
|
3229 return NGX_OK;
|
|
|
3230 }
|
|
|
3231
|
|
472
|
3232 if (r->cache == NULL) {
|
|
|
3233 return NGX_OK;
|
|
|
3234 }
|
|
|
3235
|
|
|
3236 len = h->value.len;
|
|
|
3237 p = h->value.data;
|
|
|
3238
|
|
|
3239 if (p[0] != '@') {
|
|
|
3240 n = ngx_atoi(p, len);
|
|
|
3241
|
|
|
3242 switch (n) {
|
|
|
3243 case 0:
|
|
484
|
3244 u->cacheable = 0;
|
|
472
|
3245 case NGX_ERROR:
|
|
|
3246 return NGX_OK;
|
|
|
3247
|
|
|
3248 default:
|
|
|
3249 r->cache->valid_sec = ngx_time() + n;
|
|
|
3250 return NGX_OK;
|
|
|
3251 }
|
|
|
3252 }
|
|
|
3253
|
|
|
3254 p++;
|
|
|
3255 len--;
|
|
|
3256
|
|
|
3257 n = ngx_atoi(p, len);
|
|
|
3258
|
|
|
3259 if (n != NGX_ERROR) {
|
|
|
3260 r->cache->valid_sec = n;
|
|
|
3261 }
|
|
480
|
3262 }
|
|
|
3263 #endif
|
|
472
|
3264
|
|
58
|
3265 return NGX_OK;
|
|
|
3266 }
|
|
|
3267
|
|
|
3268
|
|
|
3269 static ngx_int_t
|
|
76
|
3270 ngx_http_upstream_process_limit_rate(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3271 ngx_uint_t offset)
|
|
126
|
3272 {
|
|
638
|
3273 ngx_int_t n;
|
|
|
3274 ngx_http_upstream_t *u;
|
|
|
3275
|
|
|
3276 u = r->upstream;
|
|
|
3277 u->headers_in.x_accel_limit_rate = h;
|
|
|
3278
|
|
|
3279 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_LIMIT_RATE) {
|
|
|
3280 return NGX_OK;
|
|
|
3281 }
|
|
76
|
3282
|
|
|
3283 n = ngx_atoi(h->value.data, h->value.len);
|
|
|
3284
|
|
|
3285 if (n != NGX_ERROR) {
|
|
|
3286 r->limit_rate = (size_t) n;
|
|
|
3287 }
|
|
|
3288
|
|
|
3289 return NGX_OK;
|
|
|
3290 }
|
|
|
3291
|
|
|
3292
|
|
|
3293 static ngx_int_t
|
|
198
|
3294 ngx_http_upstream_process_buffering(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3295 ngx_uint_t offset)
|
|
|
3296 {
|
|
638
|
3297 u_char c0, c1, c2;
|
|
|
3298 ngx_http_upstream_t *u;
|
|
|
3299
|
|
|
3300 u = r->upstream;
|
|
|
3301
|
|
|
3302 if (u->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_BUFFERING) {
|
|
|
3303 return NGX_OK;
|
|
|
3304 }
|
|
|
3305
|
|
|
3306 if (u->conf->change_buffering) {
|
|
198
|
3307
|
|
|
3308 if (h->value.len == 2) {
|
|
|
3309 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3310 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3311
|
|
|
3312 if (c0 == 'n' && c1 == 'o') {
|
|
638
|
3313 u->buffering = 0;
|
|
198
|
3314 }
|
|
|
3315
|
|
|
3316 } else if (h->value.len == 3) {
|
|
|
3317 c0 = ngx_tolower(h->value.data[0]);
|
|
|
3318 c1 = ngx_tolower(h->value.data[1]);
|
|
|
3319 c2 = ngx_tolower(h->value.data[2]);
|
|
|
3320
|
|
|
3321 if (c0 == 'y' && c1 == 'e' && c2 == 's') {
|
|
638
|
3322 u->buffering = 1;
|
|
198
|
3323 }
|
|
|
3324 }
|
|
|
3325 }
|
|
|
3326
|
|
|
3327 return NGX_OK;
|
|
|
3328 }
|
|
|
3329
|
|
|
3330
|
|
|
3331 static ngx_int_t
|
|
206
|
3332 ngx_http_upstream_process_charset(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3333 ngx_uint_t offset)
|
|
|
3334 {
|
|
638
|
3335 if (r->upstream->conf->ignore_headers & NGX_HTTP_UPSTREAM_IGN_XA_CHARSET) {
|
|
|
3336 return NGX_OK;
|
|
|
3337 }
|
|
|
3338
|
|
206
|
3339 r->headers_out.override_charset = &h->value;
|
|
|
3340
|
|
|
3341 return NGX_OK;
|
|
|
3342 }
|
|
|
3343
|
|
|
3344
|
|
|
3345 static ngx_int_t
|
|
58
|
3346 ngx_http_upstream_copy_header_line(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3347 ngx_uint_t offset)
|
|
|
3348 {
|
|
122
|
3349 ngx_table_elt_t *ho, **ph;
|
|
58
|
3350
|
|
|
3351 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3352 if (ho == NULL) {
|
|
|
3353 return NGX_ERROR;
|
|
|
3354 }
|
|
|
3355
|
|
|
3356 *ho = *h;
|
|
|
3357
|
|
122
|
3358 if (offset) {
|
|
|
3359 ph = (ngx_table_elt_t **) ((char *) &r->headers_out + offset);
|
|
|
3360 *ph = ho;
|
|
|
3361 }
|
|
|
3362
|
|
58
|
3363 return NGX_OK;
|
|
|
3364 }
|
|
|
3365
|
|
|
3366
|
|
|
3367 static ngx_int_t
|
|
|
3368 ngx_http_upstream_copy_multi_header_lines(ngx_http_request_t *r,
|
|
|
3369 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3370 {
|
|
|
3371 ngx_array_t *pa;
|
|
|
3372 ngx_table_elt_t *ho, **ph;
|
|
|
3373
|
|
|
3374 pa = (ngx_array_t *) ((char *) &r->headers_out + offset);
|
|
|
3375
|
|
|
3376 if (pa->elts == NULL) {
|
|
|
3377 if (ngx_array_init(pa, r->pool, 2, sizeof(ngx_table_elt_t *)) != NGX_OK)
|
|
|
3378 {
|
|
|
3379 return NGX_ERROR;
|
|
|
3380 }
|
|
|
3381 }
|
|
|
3382
|
|
|
3383 ph = ngx_array_push(pa);
|
|
|
3384 if (ph == NULL) {
|
|
|
3385 return NGX_ERROR;
|
|
|
3386 }
|
|
|
3387
|
|
|
3388 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3389 if (ho == NULL) {
|
|
|
3390 return NGX_ERROR;
|
|
|
3391 }
|
|
|
3392
|
|
|
3393 *ho = *h;
|
|
|
3394 *ph = ho;
|
|
|
3395
|
|
|
3396 return NGX_OK;
|
|
|
3397 }
|
|
|
3398
|
|
|
3399
|
|
|
3400 static ngx_int_t
|
|
|
3401 ngx_http_upstream_copy_content_type(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3402 ngx_uint_t offset)
|
|
|
3403 {
|
|
206
|
3404 u_char *p, *last;
|
|
|
3405
|
|
|
3406 r->headers_out.content_type_len = h->value.len;
|
|
58
|
3407 r->headers_out.content_type = h->value;
|
|
494
|
3408 r->headers_out.content_type_lowcase = NULL;
|
|
58
|
3409
|
|
206
|
3410 for (p = h->value.data; *p; p++) {
|
|
|
3411
|
|
|
3412 if (*p != ';') {
|
|
|
3413 continue;
|
|
|
3414 }
|
|
|
3415
|
|
|
3416 last = p;
|
|
|
3417
|
|
|
3418 while (*++p == ' ') { /* void */ }
|
|
|
3419
|
|
372
|
3420 if (*p == '\0') {
|
|
|
3421 return NGX_OK;
|
|
|
3422 }
|
|
|
3423
|
|
286
|
3424 if (ngx_strncasecmp(p, (u_char *) "charset=", 8) != 0) {
|
|
206
|
3425 continue;
|
|
|
3426 }
|
|
|
3427
|
|
|
3428 p += 8;
|
|
|
3429
|
|
|
3430 r->headers_out.content_type_len = last - h->value.data;
|
|
|
3431
|
|
410
|
3432 if (*p == '"') {
|
|
|
3433 p++;
|
|
|
3434 }
|
|
|
3435
|
|
|
3436 last = h->value.data + h->value.len;
|
|
|
3437
|
|
|
3438 if (*(last - 1) == '"') {
|
|
|
3439 last--;
|
|
|
3440 }
|
|
|
3441
|
|
|
3442 r->headers_out.charset.len = last - p;
|
|
206
|
3443 r->headers_out.charset.data = p;
|
|
292
|
3444
|
|
|
3445 return NGX_OK;
|
|
206
|
3446 }
|
|
|
3447
|
|
58
|
3448 return NGX_OK;
|
|
|
3449 }
|
|
|
3450
|
|
|
3451
|
|
|
3452 static ngx_int_t
|
|
|
3453 ngx_http_upstream_copy_content_length(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3454 ngx_uint_t offset)
|
|
|
3455 {
|
|
|
3456 ngx_table_elt_t *ho;
|
|
|
3457
|
|
|
3458 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3459 if (ho == NULL) {
|
|
|
3460 return NGX_ERROR;
|
|
|
3461 }
|
|
|
3462
|
|
|
3463 *ho = *h;
|
|
|
3464
|
|
|
3465 r->headers_out.content_length = ho;
|
|
|
3466 r->headers_out.content_length_n = ngx_atoof(h->value.data, h->value.len);
|
|
|
3467
|
|
|
3468 return NGX_OK;
|
|
|
3469 }
|
|
|
3470
|
|
|
3471
|
|
|
3472 static ngx_int_t
|
|
464
|
3473 ngx_http_upstream_copy_last_modified(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3474 ngx_uint_t offset)
|
|
|
3475 {
|
|
|
3476 ngx_table_elt_t *ho;
|
|
|
3477
|
|
|
3478 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3479 if (ho == NULL) {
|
|
|
3480 return NGX_ERROR;
|
|
|
3481 }
|
|
|
3482
|
|
|
3483 *ho = *h;
|
|
|
3484
|
|
510
|
3485 r->headers_out.last_modified = ho;
|
|
|
3486
|
|
464
|
3487 #if (NGX_HTTP_CACHE)
|
|
|
3488
|
|
502
|
3489 if (r->upstream->cacheable) {
|
|
464
|
3490 r->headers_out.last_modified_time = ngx_http_parse_time(h->value.data,
|
|
|
3491 h->value.len);
|
|
|
3492 }
|
|
|
3493
|
|
|
3494 #endif
|
|
|
3495
|
|
|
3496 return NGX_OK;
|
|
|
3497 }
|
|
|
3498
|
|
|
3499
|
|
|
3500 static ngx_int_t
|
|
58
|
3501 ngx_http_upstream_rewrite_location(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3502 ngx_uint_t offset)
|
|
|
3503 {
|
|
|
3504 ngx_int_t rc;
|
|
|
3505 ngx_table_elt_t *ho;
|
|
|
3506
|
|
|
3507 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3508 if (ho == NULL) {
|
|
|
3509 return NGX_ERROR;
|
|
|
3510 }
|
|
|
3511
|
|
|
3512 *ho = *h;
|
|
|
3513
|
|
|
3514 if (r->upstream->rewrite_redirect) {
|
|
|
3515 rc = r->upstream->rewrite_redirect(r, ho, 0);
|
|
|
3516
|
|
78
|
3517 if (rc == NGX_DECLINED) {
|
|
|
3518 return NGX_OK;
|
|
|
3519 }
|
|
|
3520
|
|
58
|
3521 if (rc == NGX_OK) {
|
|
|
3522 r->headers_out.location = ho;
|
|
|
3523
|
|
|
3524 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3525 "rewritten location: \"%V\"", &ho->value);
|
|
|
3526 }
|
|
|
3527
|
|
|
3528 return rc;
|
|
|
3529 }
|
|
|
3530
|
|
348
|
3531 if (ho->value.data[0] != '/') {
|
|
|
3532 r->headers_out.location = ho;
|
|
|
3533 }
|
|
|
3534
|
|
58
|
3535 /*
|
|
|
3536 * we do not set r->headers_out.location here to avoid the handling
|
|
|
3537 * the local redirects without a host name by ngx_http_header_filter()
|
|
|
3538 */
|
|
|
3539
|
|
|
3540 return NGX_OK;
|
|
|
3541 }
|
|
|
3542
|
|
|
3543
|
|
|
3544 static ngx_int_t
|
|
|
3545 ngx_http_upstream_rewrite_refresh(ngx_http_request_t *r, ngx_table_elt_t *h,
|
|
|
3546 ngx_uint_t offset)
|
|
|
3547 {
|
|
|
3548 u_char *p;
|
|
|
3549 ngx_int_t rc;
|
|
|
3550 ngx_table_elt_t *ho;
|
|
|
3551
|
|
|
3552 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3553 if (ho == NULL) {
|
|
|
3554 return NGX_ERROR;
|
|
|
3555 }
|
|
|
3556
|
|
|
3557 *ho = *h;
|
|
|
3558
|
|
|
3559 if (r->upstream->rewrite_redirect) {
|
|
|
3560
|
|
340
|
3561 p = ngx_strcasestrn(ho->value.data, "url=", 4 - 1);
|
|
58
|
3562
|
|
|
3563 if (p) {
|
|
|
3564 rc = r->upstream->rewrite_redirect(r, ho, p + 4 - ho->value.data);
|
|
|
3565
|
|
|
3566 } else {
|
|
|
3567 return NGX_OK;
|
|
|
3568 }
|
|
|
3569
|
|
78
|
3570 if (rc == NGX_DECLINED) {
|
|
|
3571 return NGX_OK;
|
|
|
3572 }
|
|
|
3573
|
|
58
|
3574 if (rc == NGX_OK) {
|
|
348
|
3575 r->headers_out.refresh = ho;
|
|
|
3576
|
|
58
|
3577 ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
|
|
3578 "rewritten refresh: \"%V\"", &ho->value);
|
|
|
3579 }
|
|
|
3580
|
|
|
3581 return rc;
|
|
|
3582 }
|
|
|
3583
|
|
348
|
3584 r->headers_out.refresh = ho;
|
|
|
3585
|
|
58
|
3586 return NGX_OK;
|
|
|
3587 }
|
|
|
3588
|
|
|
3589
|
|
464
|
3590 static ngx_int_t
|
|
|
3591 ngx_http_upstream_copy_allow_ranges(ngx_http_request_t *r,
|
|
|
3592 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3593 {
|
|
|
3594 ngx_table_elt_t *ho;
|
|
|
3595
|
|
|
3596 #if (NGX_HTTP_CACHE)
|
|
|
3597
|
|
|
3598 if (r->cached) {
|
|
|
3599 r->allow_ranges = 1;
|
|
|
3600 return NGX_OK;
|
|
|
3601
|
|
|
3602 }
|
|
|
3603
|
|
|
3604 #endif
|
|
|
3605
|
|
|
3606 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3607 if (ho == NULL) {
|
|
|
3608 return NGX_ERROR;
|
|
|
3609 }
|
|
|
3610
|
|
|
3611 *ho = *h;
|
|
|
3612
|
|
510
|
3613 r->headers_out.accept_ranges = ho;
|
|
|
3614
|
|
464
|
3615 return NGX_OK;
|
|
|
3616 }
|
|
|
3617
|
|
|
3618
|
|
58
|
3619 #if (NGX_HTTP_GZIP)
|
|
|
3620
|
|
|
3621 static ngx_int_t
|
|
|
3622 ngx_http_upstream_copy_content_encoding(ngx_http_request_t *r,
|
|
|
3623 ngx_table_elt_t *h, ngx_uint_t offset)
|
|
|
3624 {
|
|
|
3625 ngx_table_elt_t *ho;
|
|
|
3626
|
|
|
3627 ho = ngx_list_push(&r->headers_out.headers);
|
|
|
3628 if (ho == NULL) {
|
|
|
3629 return NGX_ERROR;
|
|
|
3630 }
|
|
|
3631
|
|
|
3632 *ho = *h;
|
|
|
3633
|
|
|
3634 r->headers_out.content_encoding = ho;
|
|
|
3635
|
|
|
3636 return NGX_OK;
|
|
|
3637 }
|
|
|
3638
|
|
|
3639 #endif
|
|
|
3640
|
|
|
3641
|
|
36
|
3642 static ngx_int_t
|
|
122
|
3643 ngx_http_upstream_add_variables(ngx_conf_t *cf)
|
|
28
|
3644 {
|
|
260
|
3645 ngx_http_variable_t *var, *v;
|
|
28
|
3646
|
|
122
|
3647 for (v = ngx_http_upstream_vars; v->name.len; v++) {
|
|
|
3648 var = ngx_http_add_variable(cf, &v->name, v->flags);
|
|
|
3649 if (var == NULL) {
|
|
|
3650 return NGX_ERROR;
|
|
|
3651 }
|
|
|
3652
|
|
186
|
3653 var->get_handler = v->get_handler;
|
|
122
|
3654 var->data = v->data;
|
|
|
3655 }
|
|
|
3656
|
|
28
|
3657 return NGX_OK;
|
|
|
3658 }
|
|
58
|
3659
|
|
|
3660
|
|
122
|
3661 static ngx_int_t
|
|
298
|
3662 ngx_http_upstream_addr_variable(ngx_http_request_t *r,
|
|
|
3663 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3664 {
|
|
|
3665 u_char *p;
|
|
|
3666 size_t len;
|
|
|
3667 ngx_uint_t i;
|
|
|
3668 ngx_http_upstream_state_t *state;
|
|
|
3669
|
|
|
3670 v->valid = 1;
|
|
340
|
3671 v->no_cacheable = 0;
|
|
298
|
3672 v->not_found = 0;
|
|
|
3673
|
|
|
3674 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3675 v->not_found = 1;
|
|
|
3676 return NGX_OK;
|
|
|
3677 }
|
|
|
3678
|
|
|
3679 len = 0;
|
|
|
3680 state = r->upstream_states->elts;
|
|
|
3681
|
|
|
3682 for (i = 0; i < r->upstream_states->nelts; i++) {
|
|
|
3683 if (state[i].peer) {
|
|
|
3684 len += state[i].peer->len + 2;
|
|
|
3685
|
|
|
3686 } else {
|
|
|
3687 len += 3;
|
|
|
3688 }
|
|
|
3689 }
|
|
|
3690
|
|
382
|
3691 p = ngx_pnalloc(r->pool, len);
|
|
298
|
3692 if (p == NULL) {
|
|
|
3693 return NGX_ERROR;
|
|
|
3694 }
|
|
|
3695
|
|
|
3696 v->data = p;
|
|
|
3697
|
|
|
3698 i = 0;
|
|
|
3699
|
|
|
3700 for ( ;; ) {
|
|
|
3701 if (state[i].peer) {
|
|
|
3702 p = ngx_cpymem(p, state[i].peer->data, state[i].peer->len);
|
|
|
3703 }
|
|
|
3704
|
|
|
3705 if (++i == r->upstream_states->nelts) {
|
|
|
3706 break;
|
|
|
3707 }
|
|
|
3708
|
|
|
3709 if (state[i].peer) {
|
|
|
3710 *p++ = ',';
|
|
|
3711 *p++ = ' ';
|
|
|
3712
|
|
|
3713 } else {
|
|
|
3714 *p++ = ' ';
|
|
|
3715 *p++ = ':';
|
|
|
3716 *p++ = ' ';
|
|
|
3717
|
|
|
3718 if (++i == r->upstream_states->nelts) {
|
|
|
3719 break;
|
|
|
3720 }
|
|
|
3721
|
|
|
3722 continue;
|
|
|
3723 }
|
|
|
3724 }
|
|
|
3725
|
|
|
3726 v->len = p - v->data;
|
|
|
3727
|
|
|
3728 return NGX_OK;
|
|
|
3729 }
|
|
|
3730
|
|
|
3731
|
|
|
3732 static ngx_int_t
|
|
122
|
3733 ngx_http_upstream_status_variable(ngx_http_request_t *r,
|
|
|
3734 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3735 {
|
|
|
3736 u_char *p;
|
|
|
3737 size_t len;
|
|
|
3738 ngx_uint_t i;
|
|
|
3739 ngx_http_upstream_state_t *state;
|
|
|
3740
|
|
|
3741 v->valid = 1;
|
|
340
|
3742 v->no_cacheable = 0;
|
|
122
|
3743 v->not_found = 0;
|
|
|
3744
|
|
296
|
3745 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3746 v->not_found = 1;
|
|
|
3747 return NGX_OK;
|
|
|
3748 }
|
|
|
3749
|
|
296
|
3750 len = r->upstream_states->nelts * (3 + 2);
|
|
122
|
3751
|
|
382
|
3752 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3753 if (p == NULL) {
|
|
|
3754 return NGX_ERROR;
|
|
|
3755 }
|
|
|
3756
|
|
|
3757 v->data = p;
|
|
|
3758
|
|
|
3759 i = 0;
|
|
296
|
3760 state = r->upstream_states->elts;
|
|
122
|
3761
|
|
|
3762 for ( ;; ) {
|
|
296
|
3763 if (state[i].status) {
|
|
|
3764 p = ngx_sprintf(p, "%ui", state[i].status);
|
|
122
|
3765
|
|
|
3766 } else {
|
|
296
|
3767 *p++ = '-';
|
|
122
|
3768 }
|
|
|
3769
|
|
296
|
3770 if (++i == r->upstream_states->nelts) {
|
|
122
|
3771 break;
|
|
|
3772 }
|
|
|
3773
|
|
296
|
3774 if (state[i].peer) {
|
|
|
3775 *p++ = ',';
|
|
|
3776 *p++ = ' ';
|
|
|
3777
|
|
|
3778 } else {
|
|
|
3779 *p++ = ' ';
|
|
|
3780 *p++ = ':';
|
|
|
3781 *p++ = ' ';
|
|
|
3782
|
|
|
3783 if (++i == r->upstream_states->nelts) {
|
|
|
3784 break;
|
|
|
3785 }
|
|
|
3786
|
|
|
3787 continue;
|
|
|
3788 }
|
|
122
|
3789 }
|
|
|
3790
|
|
|
3791 v->len = p - v->data;
|
|
|
3792
|
|
|
3793 return NGX_OK;
|
|
|
3794 }
|
|
|
3795
|
|
|
3796
|
|
|
3797 static ngx_int_t
|
|
|
3798 ngx_http_upstream_response_time_variable(ngx_http_request_t *r,
|
|
|
3799 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3800 {
|
|
|
3801 u_char *p;
|
|
|
3802 size_t len;
|
|
|
3803 ngx_uint_t i;
|
|
262
|
3804 ngx_msec_int_t ms;
|
|
122
|
3805 ngx_http_upstream_state_t *state;
|
|
|
3806
|
|
|
3807 v->valid = 1;
|
|
340
|
3808 v->no_cacheable = 0;
|
|
122
|
3809 v->not_found = 0;
|
|
|
3810
|
|
296
|
3811 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
122
|
3812 v->not_found = 1;
|
|
|
3813 return NGX_OK;
|
|
|
3814 }
|
|
|
3815
|
|
296
|
3816 len = r->upstream_states->nelts * (NGX_TIME_T_LEN + 4 + 2);
|
|
122
|
3817
|
|
382
|
3818 p = ngx_pnalloc(r->pool, len);
|
|
122
|
3819 if (p == NULL) {
|
|
|
3820 return NGX_ERROR;
|
|
|
3821 }
|
|
|
3822
|
|
|
3823 v->data = p;
|
|
|
3824
|
|
|
3825 i = 0;
|
|
296
|
3826 state = r->upstream_states->elts;
|
|
122
|
3827
|
|
|
3828 for ( ;; ) {
|
|
296
|
3829 if (state[i].status) {
|
|
346
|
3830 ms = (ngx_msec_int_t)
|
|
|
3831 (state[i].response_sec * 1000 + state[i].response_msec);
|
|
570
|
3832 ms = ngx_max(ms, 0);
|
|
262
|
3833 p = ngx_sprintf(p, "%d.%03d", ms / 1000, ms % 1000);
|
|
296
|
3834
|
|
|
3835 } else {
|
|
|
3836 *p++ = '-';
|
|
122
|
3837 }
|
|
|
3838
|
|
296
|
3839 if (++i == r->upstream_states->nelts) {
|
|
122
|
3840 break;
|
|
|
3841 }
|
|
|
3842
|
|
296
|
3843 if (state[i].peer) {
|
|
|
3844 *p++ = ',';
|
|
|
3845 *p++ = ' ';
|
|
|
3846
|
|
|
3847 } else {
|
|
|
3848 *p++ = ' ';
|
|
|
3849 *p++ = ':';
|
|
|
3850 *p++ = ' ';
|
|
|
3851
|
|
|
3852 if (++i == r->upstream_states->nelts) {
|
|
|
3853 break;
|
|
|
3854 }
|
|
|
3855
|
|
|
3856 continue;
|
|
|
3857 }
|
|
122
|
3858 }
|
|
|
3859
|
|
|
3860 v->len = p - v->data;
|
|
|
3861
|
|
|
3862 return NGX_OK;
|
|
|
3863 }
|
|
|
3864
|
|
|
3865
|
|
430
|
3866 static ngx_int_t
|
|
|
3867 ngx_http_upstream_response_length_variable(ngx_http_request_t *r,
|
|
|
3868 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3869 {
|
|
|
3870 u_char *p;
|
|
|
3871 size_t len;
|
|
|
3872 ngx_uint_t i;
|
|
|
3873 ngx_http_upstream_state_t *state;
|
|
|
3874
|
|
|
3875 v->valid = 1;
|
|
|
3876 v->no_cacheable = 0;
|
|
|
3877 v->not_found = 0;
|
|
|
3878
|
|
|
3879 if (r->upstream_states == NULL || r->upstream_states->nelts == 0) {
|
|
|
3880 v->not_found = 1;
|
|
|
3881 return NGX_OK;
|
|
|
3882 }
|
|
|
3883
|
|
|
3884 len = r->upstream_states->nelts * (NGX_OFF_T_LEN + 2);
|
|
|
3885
|
|
|
3886 p = ngx_pnalloc(r->pool, len);
|
|
|
3887 if (p == NULL) {
|
|
|
3888 return NGX_ERROR;
|
|
|
3889 }
|
|
|
3890
|
|
|
3891 v->data = p;
|
|
|
3892
|
|
|
3893 i = 0;
|
|
|
3894 state = r->upstream_states->elts;
|
|
|
3895
|
|
|
3896 for ( ;; ) {
|
|
|
3897 p = ngx_sprintf(p, "%O", state[i].response_length);
|
|
|
3898
|
|
|
3899 if (++i == r->upstream_states->nelts) {
|
|
|
3900 break;
|
|
|
3901 }
|
|
|
3902
|
|
|
3903 if (state[i].peer) {
|
|
|
3904 *p++ = ',';
|
|
|
3905 *p++ = ' ';
|
|
|
3906
|
|
|
3907 } else {
|
|
|
3908 *p++ = ' ';
|
|
|
3909 *p++ = ':';
|
|
|
3910 *p++ = ' ';
|
|
|
3911
|
|
|
3912 if (++i == r->upstream_states->nelts) {
|
|
|
3913 break;
|
|
|
3914 }
|
|
|
3915
|
|
|
3916 continue;
|
|
|
3917 }
|
|
|
3918 }
|
|
|
3919
|
|
|
3920 v->len = p - v->data;
|
|
|
3921
|
|
|
3922 return NGX_OK;
|
|
|
3923 }
|
|
|
3924
|
|
|
3925
|
|
296
|
3926 ngx_int_t
|
|
|
3927 ngx_http_upstream_header_variable(ngx_http_request_t *r,
|
|
|
3928 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3929 {
|
|
|
3930 if (r->upstream == NULL) {
|
|
|
3931 v->not_found = 1;
|
|
|
3932 return NGX_OK;
|
|
|
3933 }
|
|
|
3934
|
|
|
3935 return ngx_http_variable_unknown_header(v, (ngx_str_t *) data,
|
|
|
3936 &r->upstream->headers_in.headers.part,
|
|
|
3937 sizeof("upstream_http_") - 1);
|
|
|
3938 }
|
|
|
3939
|
|
|
3940
|
|
502
|
3941 #if (NGX_HTTP_CACHE)
|
|
|
3942
|
|
|
3943 ngx_int_t
|
|
|
3944 ngx_http_upstream_cache_status(ngx_http_request_t *r,
|
|
|
3945 ngx_http_variable_value_t *v, uintptr_t data)
|
|
|
3946 {
|
|
|
3947 ngx_uint_t n;
|
|
|
3948
|
|
|
3949 if (r->upstream == NULL || r->upstream->cache_status == 0) {
|
|
|
3950 v->not_found = 1;
|
|
|
3951 return NGX_OK;
|
|
|
3952 }
|
|
|
3953
|
|
|
3954 n = r->upstream->cache_status - 1;
|
|
|
3955
|
|
|
3956 v->valid = 1;
|
|
|
3957 v->no_cacheable = 0;
|
|
|
3958 v->not_found = 0;
|
|
|
3959 v->len = ngx_http_cache_status[n].len;
|
|
|
3960 v->data = ngx_http_cache_status[n].data;
|
|
|
3961
|
|
|
3962 return NGX_OK;
|
|
|
3963 }
|
|
|
3964
|
|
|
3965 #endif
|
|
|
3966
|
|
|
3967
|
|
200
|
3968 static char *
|
|
|
3969 ngx_http_upstream(ngx_conf_t *cf, ngx_command_t *cmd, void *dummy)
|
|
|
3970 {
|
|
260
|
3971 char *rv;
|
|
|
3972 void *mconf;
|
|
|
3973 ngx_str_t *value;
|
|
|
3974 ngx_url_t u;
|
|
|
3975 ngx_uint_t m;
|
|
|
3976 ngx_conf_t pcf;
|
|
|
3977 ngx_http_module_t *module;
|
|
|
3978 ngx_http_conf_ctx_t *ctx, *http_ctx;
|
|
|
3979 ngx_http_upstream_srv_conf_t *uscf;
|
|
|
3980
|
|
|
3981 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
3982
|
|
|
3983 value = cf->args->elts;
|
|
|
3984 u.host = value[1];
|
|
|
3985 u.no_resolve = 1;
|
|
|
3986
|
|
|
3987 uscf = ngx_http_upstream_add(cf, &u, NGX_HTTP_UPSTREAM_CREATE
|
|
|
3988 |NGX_HTTP_UPSTREAM_WEIGHT
|
|
|
3989 |NGX_HTTP_UPSTREAM_MAX_FAILS
|
|
|
3990 |NGX_HTTP_UPSTREAM_FAIL_TIMEOUT
|
|
|
3991 |NGX_HTTP_UPSTREAM_DOWN
|
|
|
3992 |NGX_HTTP_UPSTREAM_BACKUP);
|
|
|
3993 if (uscf == NULL) {
|
|
|
3994 return NGX_CONF_ERROR;
|
|
|
3995 }
|
|
|
3996
|
|
200
|
3997
|
|
|
3998 ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t));
|
|
|
3999 if (ctx == NULL) {
|
|
|
4000 return NGX_CONF_ERROR;
|
|
|
4001 }
|
|
|
4002
|
|
260
|
4003 http_ctx = cf->ctx;
|
|
|
4004 ctx->main_conf = http_ctx->main_conf;
|
|
200
|
4005
|
|
|
4006 /* the upstream{}'s srv_conf */
|
|
|
4007
|
|
|
4008 ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
4009 if (ctx->srv_conf == NULL) {
|
|
|
4010 return NGX_CONF_ERROR;
|
|
|
4011 }
|
|
|
4012
|
|
|
4013 ctx->srv_conf[ngx_http_upstream_module.ctx_index] = uscf;
|
|
|
4014
|
|
260
|
4015 uscf->srv_conf = ctx->srv_conf;
|
|
|
4016
|
|
200
|
4017
|
|
|
4018 /* the upstream{}'s loc_conf */
|
|
|
4019
|
|
|
4020 ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module);
|
|
|
4021 if (ctx->loc_conf == NULL) {
|
|
|
4022 return NGX_CONF_ERROR;
|
|
|
4023 }
|
|
|
4024
|
|
|
4025 for (m = 0; ngx_modules[m]; m++) {
|
|
|
4026 if (ngx_modules[m]->type != NGX_HTTP_MODULE) {
|
|
|
4027 continue;
|
|
|
4028 }
|
|
|
4029
|
|
|
4030 module = ngx_modules[m]->ctx;
|
|
|
4031
|
|
260
|
4032 if (module->create_srv_conf) {
|
|
|
4033 mconf = module->create_srv_conf(cf);
|
|
|
4034 if (mconf == NULL) {
|
|
|
4035 return NGX_CONF_ERROR;
|
|
|
4036 }
|
|
|
4037
|
|
|
4038 ctx->srv_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
4039 }
|
|
|
4040
|
|
200
|
4041 if (module->create_loc_conf) {
|
|
|
4042 mconf = module->create_loc_conf(cf);
|
|
|
4043 if (mconf == NULL) {
|
|
|
4044 return NGX_CONF_ERROR;
|
|
|
4045 }
|
|
|
4046
|
|
|
4047 ctx->loc_conf[ngx_modules[m]->ctx_index] = mconf;
|
|
|
4048 }
|
|
|
4049 }
|
|
|
4050
|
|
|
4051
|
|
|
4052 /* parse inside upstream{} */
|
|
|
4053
|
|
|
4054 pcf = *cf;
|
|
|
4055 cf->ctx = ctx;
|
|
|
4056 cf->cmd_type = NGX_HTTP_UPS_CONF;
|
|
|
4057
|
|
|
4058 rv = ngx_conf_parse(cf, NULL);
|
|
|
4059
|
|
|
4060 *cf = pcf;
|
|
|
4061
|
|
|
4062 if (rv != NGX_CONF_OK) {
|
|
|
4063 return rv;
|
|
|
4064 }
|
|
|
4065
|
|
|
4066 if (uscf->servers == NULL) {
|
|
|
4067 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4068 "no servers are inside upstream");
|
|
|
4069 return NGX_CONF_ERROR;
|
|
|
4070 }
|
|
|
4071
|
|
|
4072 return rv;
|
|
|
4073 }
|
|
|
4074
|
|
|
4075
|
|
|
4076 static char *
|
|
|
4077 ngx_http_upstream_server(ngx_conf_t *cf, ngx_command_t *cmd, void *conf)
|
|
|
4078 {
|
|
|
4079 ngx_http_upstream_srv_conf_t *uscf = conf;
|
|
|
4080
|
|
260
|
4081 time_t fail_timeout;
|
|
|
4082 ngx_str_t *value, s;
|
|
|
4083 ngx_url_t u;
|
|
|
4084 ngx_int_t weight, max_fails;
|
|
|
4085 ngx_uint_t i;
|
|
|
4086 ngx_http_upstream_server_t *us;
|
|
200
|
4087
|
|
|
4088 if (uscf->servers == NULL) {
|
|
260
|
4089 uscf->servers = ngx_array_create(cf->pool, 4,
|
|
|
4090 sizeof(ngx_http_upstream_server_t));
|
|
200
|
4091 if (uscf->servers == NULL) {
|
|
|
4092 return NGX_CONF_ERROR;
|
|
|
4093 }
|
|
|
4094 }
|
|
|
4095
|
|
260
|
4096 us = ngx_array_push(uscf->servers);
|
|
|
4097 if (us == NULL) {
|
|
200
|
4098 return NGX_CONF_ERROR;
|
|
|
4099 }
|
|
|
4100
|
|
260
|
4101 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4102
|
|
200
|
4103 value = cf->args->elts;
|
|
|
4104
|
|
|
4105 ngx_memzero(&u, sizeof(ngx_url_t));
|
|
|
4106
|
|
|
4107 u.url = value[1];
|
|
266
|
4108 u.default_port = 80;
|
|
200
|
4109
|
|
340
|
4110 if (ngx_parse_url(cf->pool, &u) != NGX_OK) {
|
|
200
|
4111 if (u.err) {
|
|
|
4112 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4113 "%s in upstream \"%V\"", u.err, &u.url);
|
|
|
4114 }
|
|
|
4115
|
|
|
4116 return NGX_CONF_ERROR;
|
|
|
4117 }
|
|
|
4118
|
|
212
|
4119 weight = 1;
|
|
260
|
4120 max_fails = 1;
|
|
|
4121 fail_timeout = 10;
|
|
|
4122
|
|
|
4123 for (i = 2; i < cf->args->nelts; i++) {
|
|
|
4124
|
|
|
4125 if (ngx_strncmp(value[i].data, "weight=", 7) == 0) {
|
|
|
4126
|
|
|
4127 if (!(uscf->flags & NGX_HTTP_UPSTREAM_WEIGHT)) {
|
|
|
4128 goto invalid;
|
|
|
4129 }
|
|
|
4130
|
|
|
4131 weight = ngx_atoi(&value[i].data[7], value[i].len - 7);
|
|
212
|
4132
|
|
|
4133 if (weight == NGX_ERROR || weight == 0) {
|
|
|
4134 goto invalid;
|
|
|
4135 }
|
|
|
4136
|
|
260
|
4137 continue;
|
|
|
4138 }
|
|
|
4139
|
|
|
4140 if (ngx_strncmp(value[i].data, "max_fails=", 10) == 0) {
|
|
|
4141
|
|
|
4142 if (!(uscf->flags & NGX_HTTP_UPSTREAM_MAX_FAILS)) {
|
|
|
4143 goto invalid;
|
|
|
4144 }
|
|
|
4145
|
|
|
4146 max_fails = ngx_atoi(&value[i].data[10], value[i].len - 10);
|
|
|
4147
|
|
|
4148 if (max_fails == NGX_ERROR) {
|
|
|
4149 goto invalid;
|
|
|
4150 }
|
|
|
4151
|
|
|
4152 continue;
|
|
212
|
4153 }
|
|
260
|
4154
|
|
|
4155 if (ngx_strncmp(value[i].data, "fail_timeout=", 13) == 0) {
|
|
|
4156
|
|
|
4157 if (!(uscf->flags & NGX_HTTP_UPSTREAM_FAIL_TIMEOUT)) {
|
|
|
4158 goto invalid;
|
|
|
4159 }
|
|
|
4160
|
|
|
4161 s.len = value[i].len - 13;
|
|
|
4162 s.data = &value[i].data[13];
|
|
|
4163
|
|
|
4164 fail_timeout = ngx_parse_time(&s, 1);
|
|
|
4165
|
|
372
|
4166 if (fail_timeout == NGX_ERROR) {
|
|
260
|
4167 goto invalid;
|
|
|
4168 }
|
|
|
4169
|
|
|
4170 continue;
|
|
|
4171 }
|
|
|
4172
|
|
326
|
4173 if (ngx_strncmp(value[i].data, "backup", 6) == 0) {
|
|
|
4174
|
|
|
4175 if (!(uscf->flags & NGX_HTTP_UPSTREAM_BACKUP)) {
|
|
|
4176 goto invalid;
|
|
|
4177 }
|
|
|
4178
|
|
|
4179 us->backup = 1;
|
|
|
4180
|
|
|
4181 continue;
|
|
|
4182 }
|
|
|
4183
|
|
260
|
4184 if (ngx_strncmp(value[i].data, "down", 4) == 0) {
|
|
|
4185
|
|
|
4186 if (!(uscf->flags & NGX_HTTP_UPSTREAM_DOWN)) {
|
|
|
4187 goto invalid;
|
|
|
4188 }
|
|
|
4189
|
|
|
4190 us->down = 1;
|
|
|
4191
|
|
|
4192 continue;
|
|
|
4193 }
|
|
|
4194
|
|
|
4195 goto invalid;
|
|
212
|
4196 }
|
|
|
4197
|
|
260
|
4198 us->addrs = u.addrs;
|
|
|
4199 us->naddrs = u.naddrs;
|
|
|
4200 us->weight = weight;
|
|
|
4201 us->max_fails = max_fails;
|
|
|
4202 us->fail_timeout = fail_timeout;
|
|
200
|
4203
|
|
|
4204 return NGX_CONF_OK;
|
|
212
|
4205
|
|
|
4206 invalid:
|
|
|
4207
|
|
260
|
4208 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4209 "invalid parameter \"%V\"", &value[i]);
|
|
212
|
4210
|
|
|
4211 return NGX_CONF_ERROR;
|
|
200
|
4212 }
|
|
|
4213
|
|
|
4214
|
|
|
4215 ngx_http_upstream_srv_conf_t *
|
|
260
|
4216 ngx_http_upstream_add(ngx_conf_t *cf, ngx_url_t *u, ngx_uint_t flags)
|
|
200
|
4217 {
|
|
|
4218 ngx_uint_t i;
|
|
260
|
4219 ngx_http_upstream_server_t *us;
|
|
200
|
4220 ngx_http_upstream_srv_conf_t *uscf, **uscfp;
|
|
|
4221 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4222
|
|
260
|
4223 if (!(flags & NGX_HTTP_UPSTREAM_CREATE)) {
|
|
|
4224
|
|
340
|
4225 if (ngx_parse_url(cf->pool, u) != NGX_OK) {
|
|
200
|
4226 if (u->err) {
|
|
|
4227 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4228 "%s in upstream \"%V\"", u->err, &u->url);
|
|
|
4229 }
|
|
|
4230
|
|
|
4231 return NULL;
|
|
|
4232 }
|
|
|
4233 }
|
|
|
4234
|
|
|
4235 umcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_upstream_module);
|
|
|
4236
|
|
|
4237 uscfp = umcf->upstreams.elts;
|
|
|
4238
|
|
|
4239 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
266
|
4240
|
|
|
4241 if (uscfp[i]->host.len != u->host.len
|
|
260
|
4242 || ngx_strncasecmp(uscfp[i]->host.data, u->host.data, u->host.len)
|
|
|
4243 != 0)
|
|
|
4244 {
|
|
200
|
4245 continue;
|
|
|
4246 }
|
|
|
4247
|
|
260
|
4248 if ((flags & NGX_HTTP_UPSTREAM_CREATE)
|
|
|
4249 && (uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE))
|
|
200
|
4250 {
|
|
260
|
4251 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4252 "duplicate upstream \"%V\"", &u->host);
|
|
|
4253 return NULL;
|
|
200
|
4254 }
|
|
260
|
4255
|
|
266
|
4256 if ((uscfp[i]->flags & NGX_HTTP_UPSTREAM_CREATE) && u->port) {
|
|
260
|
4257 ngx_conf_log_error(NGX_LOG_WARN, cf, 0,
|
|
266
|
4258 "upstream \"%V\" may not have port %d",
|
|
|
4259 &u->host, u->port);
|
|
|
4260 return NULL;
|
|
|
4261 }
|
|
|
4262
|
|
|
4263 if ((flags & NGX_HTTP_UPSTREAM_CREATE) && uscfp[i]->port) {
|
|
|
4264 ngx_log_error(NGX_LOG_WARN, cf->log, 0,
|
|
|
4265 "upstream \"%V\" may not have port %d in %s:%ui",
|
|
|
4266 &u->host, uscfp[i]->port,
|
|
336
|
4267 uscfp[i]->file_name, uscfp[i]->line);
|
|
266
|
4268 return NULL;
|
|
|
4269 }
|
|
|
4270
|
|
|
4271 if (uscfp[i]->port != u->port) {
|
|
|
4272 continue;
|
|
260
|
4273 }
|
|
|
4274
|
|
324
|
4275 if (uscfp[i]->default_port && u->default_port
|
|
|
4276 && uscfp[i]->default_port != u->default_port)
|
|
|
4277 {
|
|
|
4278 continue;
|
|
|
4279 }
|
|
|
4280
|
|
642
|
4281 if (flags & NGX_HTTP_UPSTREAM_CREATE) {
|
|
|
4282 uscfp[i]->flags = flags;
|
|
|
4283 }
|
|
|
4284
|
|
260
|
4285 return uscfp[i];
|
|
200
|
4286 }
|
|
|
4287
|
|
|
4288 uscf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_srv_conf_t));
|
|
|
4289 if (uscf == NULL) {
|
|
|
4290 return NULL;
|
|
|
4291 }
|
|
|
4292
|
|
260
|
4293 uscf->flags = flags;
|
|
200
|
4294 uscf->host = u->host;
|
|
336
|
4295 uscf->file_name = cf->conf_file->file.name.data;
|
|
200
|
4296 uscf->line = cf->conf_file->line;
|
|
266
|
4297 uscf->port = u->port;
|
|
|
4298 uscf->default_port = u->default_port;
|
|
260
|
4299
|
|
|
4300 if (u->naddrs == 1) {
|
|
|
4301 uscf->servers = ngx_array_create(cf->pool, 1,
|
|
|
4302 sizeof(ngx_http_upstream_server_t));
|
|
|
4303 if (uscf->servers == NULL) {
|
|
|
4304 return NGX_CONF_ERROR;
|
|
|
4305 }
|
|
|
4306
|
|
|
4307 us = ngx_array_push(uscf->servers);
|
|
|
4308 if (us == NULL) {
|
|
|
4309 return NGX_CONF_ERROR;
|
|
|
4310 }
|
|
|
4311
|
|
|
4312 ngx_memzero(us, sizeof(ngx_http_upstream_server_t));
|
|
|
4313
|
|
|
4314 us->addrs = u->addrs;
|
|
|
4315 us->naddrs = u->naddrs;
|
|
|
4316 }
|
|
200
|
4317
|
|
|
4318 uscfp = ngx_array_push(&umcf->upstreams);
|
|
|
4319 if (uscfp == NULL) {
|
|
|
4320 return NULL;
|
|
|
4321 }
|
|
|
4322
|
|
|
4323 *uscfp = uscf;
|
|
|
4324
|
|
|
4325 return uscf;
|
|
|
4326 }
|
|
|
4327
|
|
|
4328
|
|
540
|
4329 char *
|
|
558
|
4330 ngx_http_upstream_bind_set_slot(ngx_conf_t *cf, ngx_command_t *cmd,
|
|
540
|
4331 void *conf)
|
|
|
4332 {
|
|
|
4333 char *p = conf;
|
|
|
4334
|
|
|
4335 ngx_int_t rc;
|
|
|
4336 ngx_str_t *value;
|
|
|
4337 ngx_addr_t **paddr;
|
|
|
4338
|
|
|
4339 paddr = (ngx_addr_t **) (p + cmd->offset);
|
|
|
4340
|
|
|
4341 *paddr = ngx_palloc(cf->pool, sizeof(ngx_addr_t));
|
|
|
4342 if (*paddr == NULL) {
|
|
|
4343 return NGX_CONF_ERROR;
|
|
|
4344 }
|
|
|
4345
|
|
|
4346 value = cf->args->elts;
|
|
|
4347
|
|
|
4348 rc = ngx_parse_addr(cf->pool, *paddr, value[1].data, value[1].len);
|
|
|
4349
|
|
|
4350 switch (rc) {
|
|
|
4351 case NGX_OK:
|
|
|
4352 (*paddr)->name = value[1];
|
|
|
4353 return NGX_CONF_OK;
|
|
|
4354
|
|
|
4355 case NGX_DECLINED:
|
|
|
4356 ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
|
|
|
4357 "invalid address \"%V\"", &value[1]);
|
|
|
4358 default:
|
|
|
4359 return NGX_CONF_ERROR;
|
|
|
4360 }
|
|
|
4361 }
|
|
|
4362
|
|
|
4363
|
|
356
|
4364 ngx_int_t
|
|
|
4365 ngx_http_upstream_hide_headers_hash(ngx_conf_t *cf,
|
|
|
4366 ngx_http_upstream_conf_t *conf, ngx_http_upstream_conf_t *prev,
|
|
|
4367 ngx_str_t *default_hide_headers, ngx_hash_init_t *hash)
|
|
|
4368 {
|
|
|
4369 ngx_str_t *h;
|
|
|
4370 ngx_uint_t i, j;
|
|
|
4371 ngx_array_t hide_headers;
|
|
|
4372 ngx_hash_key_t *hk;
|
|
|
4373
|
|
|
4374 if (conf->hide_headers == NGX_CONF_UNSET_PTR
|
|
|
4375 && conf->pass_headers == NGX_CONF_UNSET_PTR)
|
|
|
4376 {
|
|
|
4377 conf->hide_headers_hash = prev->hide_headers_hash;
|
|
|
4378
|
|
498
|
4379 if (conf->hide_headers_hash.buckets
|
|
502
|
4380 #if (NGX_HTTP_CACHE)
|
|
|
4381 && ((conf->cache == NULL) == (prev->cache == NULL))
|
|
|
4382 #endif
|
|
|
4383 )
|
|
498
|
4384 {
|
|
356
|
4385 return NGX_OK;
|
|
|
4386 }
|
|
|
4387
|
|
|
4388 conf->hide_headers = prev->hide_headers;
|
|
|
4389 conf->pass_headers = prev->pass_headers;
|
|
|
4390
|
|
|
4391 } else {
|
|
|
4392 if (conf->hide_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4393 conf->hide_headers = prev->hide_headers;
|
|
|
4394 }
|
|
|
4395
|
|
|
4396 if (conf->pass_headers == NGX_CONF_UNSET_PTR) {
|
|
|
4397 conf->pass_headers = prev->pass_headers;
|
|
|
4398 }
|
|
|
4399 }
|
|
|
4400
|
|
|
4401 if (ngx_array_init(&hide_headers, cf->temp_pool, 4, sizeof(ngx_hash_key_t))
|
|
|
4402 != NGX_OK)
|
|
|
4403 {
|
|
|
4404 return NGX_ERROR;
|
|
|
4405 }
|
|
|
4406
|
|
|
4407 for (h = default_hide_headers; h->len; h++) {
|
|
|
4408 hk = ngx_array_push(&hide_headers);
|
|
|
4409 if (hk == NULL) {
|
|
|
4410 return NGX_ERROR;
|
|
|
4411 }
|
|
|
4412
|
|
|
4413 hk->key = *h;
|
|
|
4414 hk->key_hash = ngx_hash_key_lc(h->data, h->len);
|
|
|
4415 hk->value = (void *) 1;
|
|
|
4416 }
|
|
|
4417
|
|
|
4418 if (conf->hide_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4419
|
|
|
4420 h = conf->hide_headers->elts;
|
|
|
4421
|
|
|
4422 for (i = 0; i < conf->hide_headers->nelts; i++) {
|
|
|
4423
|
|
|
4424 hk = hide_headers.elts;
|
|
|
4425
|
|
|
4426 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4427 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4428 goto exist;
|
|
|
4429 }
|
|
|
4430 }
|
|
|
4431
|
|
|
4432 hk = ngx_array_push(&hide_headers);
|
|
|
4433 if (hk == NULL) {
|
|
|
4434 return NGX_ERROR;
|
|
|
4435 }
|
|
|
4436
|
|
|
4437 hk->key = h[i];
|
|
|
4438 hk->key_hash = ngx_hash_key_lc(h[i].data, h[i].len);
|
|
|
4439 hk->value = (void *) 1;
|
|
|
4440
|
|
|
4441 exist:
|
|
|
4442
|
|
|
4443 continue;
|
|
|
4444 }
|
|
|
4445 }
|
|
|
4446
|
|
|
4447 if (conf->pass_headers != NGX_CONF_UNSET_PTR) {
|
|
|
4448
|
|
|
4449 h = conf->pass_headers->elts;
|
|
|
4450 hk = hide_headers.elts;
|
|
|
4451
|
|
|
4452 for (i = 0; i < conf->pass_headers->nelts; i++) {
|
|
|
4453 for (j = 0; j < hide_headers.nelts; j++) {
|
|
|
4454
|
|
|
4455 if (hk[j].key.data == NULL) {
|
|
|
4456 continue;
|
|
|
4457 }
|
|
|
4458
|
|
|
4459 if (ngx_strcasecmp(h[i].data, hk[j].key.data) == 0) {
|
|
|
4460 hk[j].key.data = NULL;
|
|
|
4461 break;
|
|
|
4462 }
|
|
|
4463 }
|
|
|
4464 }
|
|
|
4465 }
|
|
|
4466
|
|
|
4467 hash->hash = &conf->hide_headers_hash;
|
|
|
4468 hash->key = ngx_hash_key_lc;
|
|
|
4469 hash->pool = cf->pool;
|
|
|
4470 hash->temp_pool = NULL;
|
|
|
4471
|
|
|
4472 return ngx_hash_init(hash, hide_headers.elts, hide_headers.nelts);
|
|
|
4473 }
|
|
|
4474
|
|
|
4475
|
|
58
|
4476 static void *
|
|
|
4477 ngx_http_upstream_create_main_conf(ngx_conf_t *cf)
|
|
|
4478 {
|
|
|
4479 ngx_http_upstream_main_conf_t *umcf;
|
|
|
4480
|
|
|
4481 umcf = ngx_pcalloc(cf->pool, sizeof(ngx_http_upstream_main_conf_t));
|
|
|
4482 if (umcf == NULL) {
|
|
|
4483 return NULL;
|
|
|
4484 }
|
|
|
4485
|
|
200
|
4486 if (ngx_array_init(&umcf->upstreams, cf->pool, 4,
|
|
|
4487 sizeof(ngx_http_upstream_srv_conf_t *))
|
|
|
4488 != NGX_OK)
|
|
|
4489 {
|
|
496
|
4490 return NULL;
|
|
200
|
4491 }
|
|
|
4492
|
|
58
|
4493 return umcf;
|
|
|
4494 }
|
|
|
4495
|
|
|
4496
|
|
|
4497 static char *
|
|
200
|
4498 ngx_http_upstream_init_main_conf(ngx_conf_t *cf, void *conf)
|
|
58
|
4499 {
|
|
|
4500 ngx_http_upstream_main_conf_t *umcf = conf;
|
|
|
4501
|
|
200
|
4502 ngx_uint_t i;
|
|
|
4503 ngx_array_t headers_in;
|
|
|
4504 ngx_hash_key_t *hk;
|
|
|
4505 ngx_hash_init_t hash;
|
|
260
|
4506 ngx_http_upstream_init_pt init;
|
|
200
|
4507 ngx_http_upstream_header_t *header;
|
|
|
4508 ngx_http_upstream_srv_conf_t **uscfp;
|
|
|
4509
|
|
|
4510 uscfp = umcf->upstreams.elts;
|
|
|
4511
|
|
|
4512 for (i = 0; i < umcf->upstreams.nelts; i++) {
|
|
260
|
4513
|
|
|
4514 init = uscfp[i]->peer.init_upstream ? uscfp[i]->peer.init_upstream:
|
|
|
4515 ngx_http_upstream_init_round_robin;
|
|
|
4516
|
|
|
4517 if (init(cf, uscfp[i]) != NGX_OK) {
|
|
200
|
4518 return NGX_CONF_ERROR;
|
|
|
4519 }
|
|
|
4520 }
|
|
198
|
4521
|
|
212
|
4522
|
|
260
|
4523 /* upstream_headers_in_hash */
|
|
|
4524
|
|
198
|
4525 if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t))
|
|
|
4526 != NGX_OK)
|
|
58
|
4527 {
|
|
|
4528 return NGX_CONF_ERROR;
|
|
|
4529 }
|
|
|
4530
|
|
198
|
4531 for (header = ngx_http_upstream_headers_in; header->name.len; header++) {
|
|
|
4532 hk = ngx_array_push(&headers_in);
|
|
|
4533 if (hk == NULL) {
|
|
|
4534 return NGX_CONF_ERROR;
|
|
|
4535 }
|
|
|
4536
|
|
|
4537 hk->key = header->name;
|
|
|
4538 hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len);
|
|
|
4539 hk->value = header;
|
|
|
4540 }
|
|
|
4541
|
|
|
4542 hash.hash = &umcf->headers_in_hash;
|
|
|
4543 hash.key = ngx_hash_key_lc;
|
|
|
4544 hash.max_size = 512;
|
|
244
|
4545 hash.bucket_size = ngx_align(64, ngx_cacheline_size);
|
|
198
|
4546 hash.name = "upstream_headers_in_hash";
|
|
|
4547 hash.pool = cf->pool;
|
|
|
4548 hash.temp_pool = NULL;
|
|
|
4549
|
|
|
4550 if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) {
|
|
|
4551 return NGX_CONF_ERROR;
|
|
|
4552 }
|
|
58
|
4553
|
|
|
4554 return NGX_CONF_OK;
|
|
|
4555 }
|
