如何获取拨号连接的远程的动态IP？

Question

两台机器都装有猫，一台拨号到另一台机器上，服务器端的接受传入连接TCP/IP地址分配设置为用DHCP自动分配TCP/IP地址。

Answer 1

BOOL GetServAddr(HRASCONN hrasconn, LPSTR lpszServAddr)
{
         RASPPPIP* lpProjection;
DWORD dwBufSize = 0;
DWORD ret;
BOOL bResult;
DWORD dwErrorCode;
RASPPPIP Projection; Projection.dwSize = sizeof(RASPPPIP);
dwErrorCode = RasGetProjectionInfo(hrasconn, RASP_PppIp, &Projection, &dwBufSize);
if((dwErrorCode != ERROR_BUFFER_TOO_SMALL) && (dwErrorCode != ERROR_INVALID_SIZE))
         return false;
lpProjection=(RASPPPIP*)::malloc(dwBufSize);
if(lpProjection == NULL)
return false;
memset(lpProjection,'\0',dwBufSize);
lpProjection->dwSize=dwBufSize;
ret=::RasGetProjectionInfo(/*m_ConnectionHandle*/hrasconn,RASP_PppIp,lpProjection,&dwBufSize);
if(ret!=0)
bResult= false;
else
{
if (strlen(lpProjection->szServerIpAddress)>0)
{
strcpy(lpszServAddr, lpProjection->szServerIpAddress);
bResult = true;
}
else
bResult = false;
}
free(lpProjection);
return bResult;
}