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TSoInetLastErr Class Reference

class TSoInetLastErr

Error information for TCP/IP protocols.

An object of this class is returned packaged as a TPckgBuf<TSoInetLastErr> in the option argument of RSocket::GetOpt(), when this function is called with (KSolInetIp, KSoInetLastError). The data members of this object are updated whenever a packet carrying an ICMP message is received.

Note:

This class is originally defined only for the IPv4 environment, and there is no definite way of knowing whether the fields iErrType and iErrCode contain ICMPv4 or ICMPv6 codes. A solution that will give the correct answer in most normal cases, is

	TSoInetLastErr p;
	...
	if (p.iErrAddr.Family() == KAfInet || p.iErrAddr.IsV4Mapped())
		// assume ICMPv4 type and code
	else
		// assume ICMPv6 type and code

Alternatively, the error can be interpreted based on the member variable iStatus, if it contains one of the extended error codes. These are are common for both IPv4 and IPv6.

Public Attributes
TInetAddr	iDstAddr
TInetAddr	iErrAddr
TInt	iErrCode
TInt	iErrType
TInetAddr	iSrcAddr
TInt	iStatus

Member Data Documentation

TInetAddr iDstAddr

TInetAddr

iDstAddr

A TInetAddr with the IP address and port set to the destination address and port of the failed datagram.

TInetAddr iErrAddr

TInetAddr

iErrAddr

A TInetAddr with the IP address set to the address of the host that generated the error.

TInt iErrCode

TInt

iErrCode

The value of the Code field of the last ICMP message.

TInt iErrType

TInt

iErrType

The value of the Type field of the last ICMP message.

TInetAddr iSrcAddr

TInetAddr

iSrcAddr

A TInetAddr with the IP address and port set to the source address and port of the failed datagram.

TInt iStatus

TInt

iStatus

The error code returned by the last ESOCK API function called.