Example Code for Removing the RnR Connection Point

The following code example is used by the Winsock service code example to unregister the RnR connection point for the service.

[C++]
#include <winsock2.h>
#include <stdio.h>
 
/***************************************************************************

	serverUnregister()

	Unregisters the RnR connection point for the specified service. 
	WSAStartup must be called before calling this function.

***************************************************************************/

INT serverUnregister(SOCKADDR *sa, 
					 GUID *pServiceID, 
					 LPTSTR pszServiceInstanceName, 
					 LPTSTR pszServiceInstanceComment)
{
	DWORD ret;
	WSAVERSION Version;
	WSAQUERYSET QuerySet;
	CSADDR_INFO CSAddrInfo[1];
	SOCKADDR sa_local;

	memset(&QuerySet, 0, sizeof(QuerySet));
	memset(&CSAddrInfo, 0, sizeof(CSAddrInfo));
	memset(&sa_local, 0, sizeof(SOCKADDR));
	sa_local.sa_family = AF_INET;

	// Build the CSAddrInfo structure to contain address
	// data. This is what clients use to create a connection.
	//
	// Be aware that the LocalAddr is set to zero because
	// dynamically-assigned port numbers are used.
	//
	CSAddrInfo[0].LocalAddr.iSockaddrLength = sizeof(SOCKADDR);
	CSAddrInfo[0].LocalAddr.lpSockaddr = &sa_local;
	CSAddrInfo[0].RemoteAddr.iSockaddrLength = sizeof(SOCKADDR);
	CSAddrInfo[0].RemoteAddr.lpSockaddr = sa;
	CSAddrInfo[0].iSocketType = SOCK_STREAM;
	CSAddrInfo[0].iProtocol = PF_INET;

	QuerySet.dwSize = sizeof(WSAQUERYSET);
	QuerySet.lpServiceClassId = pServiceID;
	QuerySet.lpszServiceInstanceName = pszServiceInstanceName;
	QuerySet.lpszComment = pszServiceInstanceComment;
	QuerySet.lpVersion = &Version;
	QuerySet.lpVersion->dwVersion = 2;
	QuerySet.lpVersion->ecHow = COMP_NOTLESS;
	QuerySet.dwNameSpace = NS_NTDS;
	QuerySet.dwNumberOfCsAddrs = 1;
	QuerySet.lpcsaBuffer = CSAddrInfo;

	ret = WSASetService( &QuerySet,
						 RNRSERVICE_DEREGISTER,
						 SERVICE_MULTIPLE);

	return(ret);
}