为什么解析不了域名？

[buddyer]

var
server:TSockaddrin;
sClient:TSocket;
hostent:PHostEnt;
WSADATA:TWSADATA;
begin
{socket}

WSAStartup(makeword(2,2),WSADATA);
sClient:=socket(PF_INET,SOCK_STREAM,IPPROTO_TCP);
if sClient = INVALID_SOCKET then
begin
showmessage(inttostr(WSAGetLastError));
exit;
end;

loginip:=ip;
loginport:=port;
ZeroMemory(@server,sizeof(server));
server.sin_family:=PF_INET;
server.sin_addr.S_addr:=inet_addr(pchar(loginip));

{ TODO -o徐沙 : 4/16 登录窗口的域名解析 }
if server.sin_addr.S_addr=INADDR_NONE then
begin
hostent:=gethostbyname(pchar(ip));
if hostent=nil then
begin
application.MessageBox(pchar(inttostr(GetLastError)),
'连接失败',MB_OK+MB_ICONERROR);
closesocket(sclient);
WSACleanup;
exit;
end;
// CopyMemory(@(server.sin_addr),hostent.h_addr,hostent.h_length);
server.sin_addr:=in_addr((hostent.h_addr)^);
end;
server.sin_port:=htons(strtoint(loginport));

if connect(sClient,server,sizeof(server))=socket_error then
begin
application.MessageBox('建立连接失败!','连接错误',MB_OK+MB_ICONERROR);
closesocket(sClient);
WSACleanup;
exit;
end;
为什么解析不了域名，填写的域名解析是个错的，但是ping是可以解析域名的。
不知道哪儿出问题了 ，帮我看看吧

[yueshujiang]

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