用clientsocket发送http头请求

procedure TForm1.Button2Click(Sender: TObject);
var Httpstr:string;
begin
cs1.Active :=true;
Httpstr:=''''GET http://www.paymesurf.com:80/surf3.php?usrid=607 HTTP/1.1'''' #13#10;
httpstr:=httpstr ''''Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, application/x-shockwave-flash, */*'''' #13#10;
httpstr:=httpstr ''''Accept-Language: zh-cn'''' #13#10;
httpstr:=httpstr ''''User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; MyIE2; .NET CLR 1.1.4322)'''' #13#10;
httpstr:=httpstr ''''Host: www.paymesurf.com'''' #13#10;
httpstr:=httpstr ''''Proxy-Connection: Keep-Alive'''' #13#10;
httpstr:=httpstr '''' '''';
memo1.Lines.Add(httpstr);
cs1.Socket.SendText(httpstr);
end;

procedure TForm1.cs1Read(Sender: TObject; Socket: TCustomWinSocket);
var s:string;
succ:boolean;
begin
succ :=false;
s:=socket.ReceiveText;
memo1.Lines.Add(s);
if (pos(''''200'''',s)<>0) then //返回信息：200 OK，表示发送成功
begin
StatusBar1.SimpleText:=''''成功！'''';
cs1.Active :=false;
succ :=true;
end else
begin
StatusBar1.SimpleText:=''''失败'''';
cs1.active:=true;
succ :=false;
end;
end;

为什么没有反回数据呢。试了多次也不行。看来http头还真是难搞呀。

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