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