TWSocket
Main page -> ICS component reference -> TWSocket
Contents
Overview
- unit WSocket.pas
- inheritance
TWSocket component is implementing the TCP protocol described in RFC 793 and and UDP protocol described in RFC 768. Both protocols are encaptulated by the IP protocol described in RFC 791. TWSocket is used in almost every other ICS component.
TWSocket component can be used as client or a server. For its use as TCP server however TWSocketServer is encouraged because of his advanced features.
Properties
| Addr | Client: The host to connect to. Server: The interface to listen on. | |
| AllSent | ||
| BufSize | Size in bytes for send dynamic buffer cell. | |
| ComponentOptions | ||
| DnsResult | Typically called in OnDnsLookupDone. The IP address of the host given as argument to DnsLookup. | |
| DnsResultList | Similar to DnsResult but a TStringList containing the multiple IP's of the host if appropriate. | |
| FlushTimeout | ||
| Handle | Handle for the underlaying hidden window. | |
| HSocket | Winsock handle for underlaying socket. | |
| IcsLogger | ||
| LastError | ||
| LineEcho | Echo all received characters back to tramitter. | |
| LineEdit | Handle received control characters used for editing. | |
| LineEnd | End of line character(s) used ot fire OnDataAvailable. | |
| LineLength | ||
| LineLimit | Maximum line lenght to receive before firing OnLineLimitExceeded. See also DOS attac. | |
| LineMode | ||
| LingerOnOff | ||
| LingerTimeout | ||
| ListenBacklog | ||
| LocalAddr | ||
| LocalPort | ||
| MultiCast | ||
| MultiCastAddrStr | ||
| MultiCastIpTTL | ||
| MultiThreaded | ||
| PeerAddr | ||
| PeerPort | ||
| Port | ||
| PortNum | ||
| Proto | ||
| RcvdCnt | ||
| RcvdCount | ||
| RcvdPtr | ||
| ReadCount | ||
| ReqVerLow | ||
| ReqVerHigh | ||
| ReuseAddr | ||
| SendFlags | ||
| SocksAuthentication | ||
| SocksLevel | ||
| SocksPassword | ||
| SocksPort | ||
| SocksServer | ||
| SocksUsercode | ||
| State | ||
| Terminated | ||
| Text |
Methods
Events
| OnBgException | Background exception occured. | |
| OnChangeState | State of TWSocket has changed. | |
| OnDataAvailable | Data available in internal receive buffer. | |
| OnDataSent | Internal sent buffer is completely delivered to winsock. | |
| OnDebugDisplay | ||
| OnDnsLookupDone | DNSLookUp has finished. | |
| OnError | Discouraged, use exception handling instead. | |
| OnLineLimitExceeded | Denial of service attack | |
| OnMessagePump | To call your own message pump. | |
| OnSendData | Winsock send buffer is empty, will be filled again by internal send buffer if still data available to send. | |
| OnSessionAvailable | Client connected to this server. | |
| OnSessionClosed | Socket has closed. | |
| OnSessionConnected | Session to host etablished. | |
| OnSocksAuthState | ||
| OnSocksConnected | ||
| OnSocksError |
How to
