[求助]如何用IP地址连接SDE？

<P>在以下的代码中，我用服务器名作为变量csSever的值，则连接成功；</P>
<P>但当我用IP地址作为它的值时，则连接失败。</P>
<P>我想要做一个像Catalog那样，可以写IP做服务器名的，请问该怎么写？</P>
<P>HRESULT ConnectToSDE(IWorkspace **ipSdeWS)<BR>{<BR> //Connecting to SDE<BR> CString csSever,csInstance,csUser,csPasswd,csDatabase,csVersion;<BR> csSever = "ghy-td2kwiodh72";<BR> csInstance = "esri_sde";<BR> csUser = "sde";<BR> csPasswd = "sde";<BR> csDatabase = "";<BR> csVersion = "sde.default";<BR> BSTR server; <BR>    BSTR instance; <BR> BSTR user; <BR>    BSTR passwd; <BR>    BSTR database;<BR> BSTR version;</P>
<P> server = csSever.AllocSysString ();<BR> instance = csInstance.AllocSysString();<BR> database = csDatabase.AllocSysString();<BR> user = csUser.AllocSysString();<BR> passwd = csPasswd.AllocSysString();<BR> version = csVersion.AllocSysString();</P>
<P> IPropertySetPtr ipPropertySet;<BR>    ipPropertySet.CreateInstance(CLSID_PropertySet);</P>
<P> ipPropertySet->SetProperty(CComBSTR("SERVER"),    CComVariant(server));<BR> ipPropertySet->SetProperty(CComBSTR(L"INSTANCE"), CComVariant(instance));<BR> ipPropertySet->SetProperty(CComBSTR(L"DATABASE"), CComVariant(database));<BR> ipPropertySet->SetProperty(CComBSTR(L"USER"),     CComVariant(user));<BR> ipPropertySet->SetProperty(CComBSTR(L"PASSWORD"), CComVariant(passwd));<BR> ipPropertySet->SetProperty(CComBSTR(L"VERSION"),CComVariant(version) );</P>
<P> IWorkspacePtr openWorkspace;<BR> IWorkspaceFactoryPtr ipWorkspaceFactory;<BR> ipWorkspaceFactory.CreateInstance(CLSID_SdeWorkspaceFactory);<BR> ipWorkspaceFactory ->Open(ipPropertySet,NULL, ;openWorkspace);<BR> if(openWorkspace == 0 ) return S_FALSE;<BR> (*ipSdeWS) = openWorkspace;<BR> (*ipSdeWS) ->AddRef();</P>
<P><BR> return S_OK;</P>
<P>//Connected<BR>}</P>

<P>没看过，但是如果需要绑定的 话，Catalog是怎么做到的呢？它每次连服务器之前都要先用ip找到服务器的名字吗？</P>

$WINDOWS_PATH$\system32\drivers\etc下面的hosts.msn、services有没有主机ip绑定和端口绑定？