Delphi How to wait for socket answer inside procedure?
- by Astronavigator
For some specific needs i need to create procedure that waits for socket request (or answer) in dll:
TForm1 = class(TForm)
ServerSocket1: TServerSocket;
......
procedure MyWaitProc; stdcall;
begin
Go := false;
while not Go do
begin
// Wating...
// Application.ProcessMessages; // Works with this line
end;
end;
procedure TForm1.ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
begin
MessageBoxA(0, PAnsiChar('Received: '+Socket.ReceiveText), '', MB_OK);
Go := true;
end;
exports
MyWaitProc;
When I call Application.ProcessMessages everything works fine: application waits for request and then continues. But in my case calling Application.ProcessMessages causes to unlocking main form on host application (not dll's one). When I don't call Application.ProcessMessages application just hangs couse it cannot handle message...
So, how to create such a procedure that's wating for socket answer ?
Maybe there a way to wait for socket answer without using Application.ProcessMessages ?
EDIT
I also tried to use TIdTCPServer, for some reasons, the result is the same.
TForm1 = class(TForm)
IdTCPServer1: TIdTCPServer;
.....
procedure MyWaitProc; stdcall;
begin
Go := false;
while not Go do
begin
// Waiting ...
// Application.ProcessMessages;
end;
end;
procedure TForm1.IdTCPServer1Execute(AContext: TIdContext);
var
s: string;
begin
s := AContext.Connection.Socket.ReadString(1);
AllText := AllText + s;
Go := True;
end;
