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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 #ifndef _NGX_CONNECTION_H_INCLUDED_
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8 #define _NGX_CONNECTION_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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92
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15 typedef struct ngx_listening_s ngx_listening_t;
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16
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17 struct ngx_listening_s {
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18 ngx_socket_t fd;
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0
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19
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92
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20 struct sockaddr *sockaddr;
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21 socklen_t socklen; /* size of sockaddr */
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22 size_t addr_text_max_len;
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23 ngx_str_t addr_text;
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0
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24
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92
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25 int type;
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112
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26
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92
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27 int backlog;
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112
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28 int rcvbuf;
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29 int sndbuf;
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654
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30 #if (NGX_HAVE_KEEPALIVE_TUNABLE)
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31 int keepidle;
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32 int keepintvl;
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33 int keepcnt;
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34 #endif
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0
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35
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92
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36 /* handler of accepted connection */
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96
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37 ngx_connection_handler_pt handler;
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92
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38
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39 void *servers; /* array of ngx_http_in_addr_t, for example */
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0
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40
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92
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41 ngx_log_t log;
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484
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42 ngx_log_t *logp;
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0
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43
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92
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44 size_t pool_size;
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45 /* should be here because of the AcceptEx() preread */
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46 size_t post_accept_buffer_size;
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47 /* should be here because of the deferred accept */
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106
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48 ngx_msec_t post_accept_timeout;
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92
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49
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50 ngx_listening_t *previous;
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51 ngx_connection_t *connection;
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0
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52
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92
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53 unsigned open:1;
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54 unsigned remain:1;
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55 unsigned ignore:1;
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0
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56
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92
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57 unsigned bound:1; /* already bound */
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58 unsigned inherited:1; /* inherited from previous process */
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59 unsigned nonblocking_accept:1;
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112
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60 unsigned listen:1;
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92
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61 unsigned nonblocking:1;
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62 unsigned shared:1; /* shared between threads or processes */
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63 unsigned addr_ntop:1;
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72
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64
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460
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65 #if (NGX_HAVE_INET6 && defined IPV6_V6ONLY)
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66 unsigned ipv6only:2;
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67 #endif
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654
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68 unsigned keepalive:2;
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460
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69
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18
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70 #if (NGX_HAVE_DEFERRED_ACCEPT)
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92
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71 unsigned deferred_accept:1;
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72 unsigned delete_deferred:1;
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73 unsigned add_deferred:1;
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72
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74 #ifdef SO_ACCEPTFILTER
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92
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75 char *accept_filter;
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72
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76 #endif
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77 #endif
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584
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78 #if (NGX_HAVE_SETFIB)
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79 int setfib;
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80 #endif
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0
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81
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92
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82 };
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0
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83
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84
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85 typedef enum {
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460
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86 NGX_ERROR_ALERT = 0,
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0
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87 NGX_ERROR_ERR,
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88 NGX_ERROR_INFO,
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460
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89 NGX_ERROR_IGNORE_ECONNRESET,
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90 NGX_ERROR_IGNORE_EINVAL
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0
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91 } ngx_connection_log_error_e;
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92
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93
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94 typedef enum {
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32
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95 NGX_TCP_NODELAY_UNSET = 0,
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96 NGX_TCP_NODELAY_SET,
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97 NGX_TCP_NODELAY_DISABLED
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98 } ngx_connection_tcp_nodelay_e;
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99
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100
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101 typedef enum {
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0
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102 NGX_TCP_NOPUSH_UNSET = 0,
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32
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103 NGX_TCP_NOPUSH_SET,
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104 NGX_TCP_NOPUSH_DISABLED
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105 } ngx_connection_tcp_nopush_e;
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106
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107
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254
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108 #define NGX_LOWLEVEL_BUFFERED 0x0f
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109 #define NGX_SSL_BUFFERED 0x01
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146
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110
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111
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0
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112 struct ngx_connection_s {
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113 void *data;
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114 ngx_event_t *read;
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115 ngx_event_t *write;
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116
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117 ngx_socket_t fd;
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118
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119 ngx_recv_pt recv;
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88
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120 ngx_send_pt send;
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126
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121 ngx_recv_chain_pt recv_chain;
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0
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122 ngx_send_chain_pt send_chain;
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123
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124 ngx_listening_t *listening;
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125
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126 off_t sent;
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127
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128 ngx_log_t *log;
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129
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130 ngx_pool_t *pool;
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131
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132 struct sockaddr *sockaddr;
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133 socklen_t socklen;
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134 ngx_str_t addr_text;
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135
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126
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136 #if (NGX_SSL)
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96
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137 ngx_ssl_connection_t *ssl;
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0
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138 #endif
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139
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140 struct sockaddr *local_sockaddr;
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141
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142 ngx_buf_t *buffer;
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143
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618
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144 ngx_queue_t queue;
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145
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44
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146 ngx_atomic_uint_t number;
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0
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147
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496
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148 ngx_uint_t requests;
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149
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254
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150 unsigned buffered:8;
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146
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151
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460
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152 unsigned log_error:3; /* ngx_connection_log_error_e */
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0
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153
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154 unsigned single_connection:1;
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155 unsigned unexpected_eof:1;
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156 unsigned timedout:1;
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132
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157 unsigned error:1;
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158 unsigned destroyed:1;
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2
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159
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290
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160 unsigned idle:1;
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618
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161 unsigned reusable:1;
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290
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162 unsigned close:1;
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163
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2
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164 unsigned sendfile:1;
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165 unsigned sndlowat:1;
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32
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166 unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
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167 unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
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2
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168
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18
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169 #if (NGX_HAVE_IOCP)
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0
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170 unsigned accept_context_updated:1;
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171 #endif
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172
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520
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173 #if (NGX_HAVE_AIO_SENDFILE)
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174 unsigned aio_sendfile:1;
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175 ngx_buf_t *busy_sendfile;
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176 #endif
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177
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0
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178 #if (NGX_THREADS)
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179 ngx_atomic_t lock;
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180 #endif
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181 };
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182
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183
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486
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184 ngx_listening_t *ngx_create_listening(ngx_conf_t *cf, void *sockaddr,
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185 socklen_t socklen);
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0
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186 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
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187 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
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486
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188 void ngx_configure_listening_sockets(ngx_cycle_t *cycle);
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0
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189 void ngx_close_listening_sockets(ngx_cycle_t *cycle);
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190 void ngx_close_connection(ngx_connection_t *c);
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492
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191 ngx_int_t ngx_connection_local_sockaddr(ngx_connection_t *c, ngx_str_t *s,
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192 ngx_uint_t port);
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0
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193 ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);
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194
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92
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195 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
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196 void ngx_free_connection(ngx_connection_t *c);
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0
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197
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618
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198 void ngx_reusable_connection(ngx_connection_t *c, ngx_uint_t reusable);
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0
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199
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200 #endif /* _NGX_CONNECTION_H_INCLUDED_ */
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