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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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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; /* offset to address in sockaddr */
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23 size_t addr_text_max_len;
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24 ngx_str_t addr_text;
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0
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25
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92
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26 int family;
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27 int type;
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112
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28
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92
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29 int backlog;
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112
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30 int rcvbuf;
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31 int sndbuf;
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32
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92
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33 /* handler of accepted connection */
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96
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34 ngx_connection_handler_pt handler;
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92
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35
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36 void *servers; /* array of ngx_http_in_addr_t, for example */
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37
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92
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38 ngx_log_t log;
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39
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92
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40 size_t pool_size;
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41 /* should be here because of the AcceptEx() preread */
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42 size_t post_accept_buffer_size;
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43 /* should be here because of the deferred accept */
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106
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44 ngx_msec_t post_accept_timeout;
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92
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45
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46 ngx_listening_t *previous;
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47 ngx_connection_t *connection;
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48
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92
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49 unsigned open:1;
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50 unsigned remain:1;
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51 unsigned ignore:1;
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52
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92
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53 unsigned bound:1; /* already bound */
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54 unsigned inherited:1; /* inherited from previous process */
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55 unsigned nonblocking_accept:1;
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112
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56 unsigned listen:1;
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92
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57 unsigned nonblocking:1;
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58 unsigned shared:1; /* shared between threads or processes */
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59 unsigned addr_ntop:1;
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72
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60
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18
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61 #if (NGX_HAVE_DEFERRED_ACCEPT)
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92
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62 unsigned deferred_accept:1;
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63 unsigned delete_deferred:1;
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64 unsigned add_deferred:1;
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72
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65 #ifdef SO_ACCEPTFILTER
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92
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66 char *accept_filter;
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72
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67 #endif
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68 #endif
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69
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92
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70 };
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71
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72
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73 typedef enum {
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74 NGX_ERROR_CRIT = 0,
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75 NGX_ERROR_ERR,
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76 NGX_ERROR_INFO,
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77 NGX_ERROR_IGNORE_ECONNRESET
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78 } ngx_connection_log_error_e;
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79
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80
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81 typedef enum {
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32
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82 NGX_TCP_NODELAY_UNSET = 0,
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83 NGX_TCP_NODELAY_SET,
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84 NGX_TCP_NODELAY_DISABLED
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85 } ngx_connection_tcp_nodelay_e;
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86
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87
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88 typedef enum {
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89 NGX_TCP_NOPUSH_UNSET = 0,
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90 NGX_TCP_NOPUSH_SET,
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91 NGX_TCP_NOPUSH_DISABLED
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92 } ngx_connection_tcp_nopush_e;
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93
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94
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146
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95 #define NGX_LOWLEVEL_BUFFERED 0x0000000f
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96 #define NGX_SSL_BUFFERED 0x00000001
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97
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98
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99 struct ngx_connection_s {
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100 void *data;
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101 ngx_event_t *read;
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102 ngx_event_t *write;
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103
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104 ngx_socket_t fd;
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105
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106 ngx_recv_pt recv;
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88
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107 ngx_send_pt send;
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126
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108 ngx_recv_chain_pt recv_chain;
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109 ngx_send_chain_pt send_chain;
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110
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111 ngx_listening_t *listening;
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112
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113 off_t sent;
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114
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115 ngx_log_t *log;
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116
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117 ngx_pool_t *pool;
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118
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119 struct sockaddr *sockaddr;
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120 socklen_t socklen;
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121 ngx_str_t addr_text;
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122
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126
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123 #if (NGX_SSL)
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96
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124 ngx_ssl_connection_t *ssl;
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125 #endif
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126
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18
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127 #if (NGX_HAVE_IOCP)
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128 struct sockaddr *local_sockaddr;
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129 socklen_t local_socklen;
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130 #endif
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131
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132 ngx_buf_t *buffer;
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133
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44
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134 ngx_atomic_uint_t number;
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135
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146
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136 ngx_uint_t buffered;
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137
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32
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138 unsigned log_error:2; /* ngx_connection_log_error_e */
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139
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140 unsigned single_connection:1;
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141 unsigned unexpected_eof:1;
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142 unsigned timedout:1;
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132
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143 unsigned error:1;
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144 unsigned destroyed:1;
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2
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145
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146 unsigned sendfile:1;
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147 unsigned sndlowat:1;
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32
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148 unsigned tcp_nodelay:2; /* ngx_connection_tcp_nodelay_e */
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149 unsigned tcp_nopush:2; /* ngx_connection_tcp_nopush_e */
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2
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150
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18
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151 #if (NGX_HAVE_IOCP)
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152 unsigned accept_context_updated:1;
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153 #endif
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154
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155 #if (NGX_THREADS)
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156 ngx_atomic_t lock;
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157 #endif
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158 };
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159
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160
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161 #ifndef ngx_ssl_set_nosendshut
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162 #define ngx_ssl_set_nosendshut(ssl)
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163 #endif
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164
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165
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166 ngx_listening_t *ngx_listening_inet_stream_socket(ngx_conf_t *cf,
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70
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167 in_addr_t addr, in_port_t port);
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168 ngx_int_t ngx_set_inherited_sockets(ngx_cycle_t *cycle);
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169 ngx_int_t ngx_open_listening_sockets(ngx_cycle_t *cycle);
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112
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170 void ngx_configure_listening_socket(ngx_cycle_t *cycle);
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171 void ngx_close_listening_sockets(ngx_cycle_t *cycle);
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172 void ngx_close_connection(ngx_connection_t *c);
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173 ngx_int_t ngx_connection_error(ngx_connection_t *c, ngx_err_t err, char *text);
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174
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92
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175 ngx_connection_t *ngx_get_connection(ngx_socket_t s, ngx_log_t *log);
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176 void ngx_free_connection(ngx_connection_t *c);
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0
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177
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178
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179 #endif /* _NGX_CONNECTION_H_INCLUDED_ */
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