Example Code for Removing the RnR Connection Point

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

/*
** Simple Winsock Service
*/
#include <winsock2.h>
#include <stdio.h>
 
//{A9033BC1-ECA4-11cf-A054-00AA006C33ED}
static GUID SVCID_EXAMPLE_SERVICE = 
{ 0xa9033bc1, 0xeca4, 0x11cf, { 0xa0, 0x54, 0x0, 0xaa, 0x0, 0x6c, 0x33, 0xed } };
 
static WCHAR    ServiceInstanceName[] = L"Example Service Instance";
static WCHAR    ServiceInstanceComment[] = L"ExampleService instance registered in the directory service through RnR";
 
INT 
serverUnregister(SOCKADDR * sa)
{
    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
    //information. This is what clients will use to make a connection
    //
    //Note that the LocalAddr is zeroed out 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 = &SVCID_EXAMPLE_SERVICE;
    QuerySet.lpszServiceInstanceName = ServiceInstanceName;
    QuerySet.lpszComment = ServiceInstanceComment;
    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 );
 
}