如果可能的话,在DELPHI 5中提供一个示例
假设我们有以下代码。一个简单的tclientsocket与tserver套接字通信。如果来自tclientsocket的请求在事件tserversocket1onReadClient上的数据进程之后出现,那么一切正常。但是我如何在进程中间绕过这个问题我从socketclient1获得一个新的请求而我还没有完成我的进程?
我的tclientsocket字符串消息不会超过255个字符。
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ScktComp;
type
TForm1 = class(TForm)
ClientSocket1: TClientSocket;
Button1: TButton;
ServerSocket1: TServerSocket;
procedure Button1Click(Sender: TObject);
procedure ClientSocket1Error(Sender: TObject; Socket: TCustomWinSocket;ErrorEvent: TErrorEvent; var ErrorCode: Integer);
procedure ServerSocket1ClientError(Sender: TObject;Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;var ErrorCode: Integer);
procedure ServerSocket1ClientRead(Sender: TObject;
Socket: TCustomWinSocket);
private
public
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Button1Click(Sender: TObject);
begin
with Serversocket1 do
begin
Active:=false;
ServerType:=stNonBlocking;
port:=5052;
Active:=true;
end;
with ClientSocket1 do
begin
active:=false;
port:=5052;
Address:='127.0.0.1';
host:='127.0.0.1';
active:=true;
end;
end;
procedure TForm1.ClientSocket1Error(Sender: TObject;
Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
var ErrorCode: Integer);
begin
errorcode:=0;
end;
procedure TForm1.ServerSocket1ClientError(Sender: TObject;
Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
var ErrorCode: Integer);
begin
errorcode:=0;
end;
procedure TForm1.ServerSocket1ClientRead(Sender: TObject;Socket: TCustomWinSocket);
var mydata:String;
begin
mydata:=socket.ReceiveText;
///Proceccing my data now
//Line 1
//Line 2
//Line 3
//Line 4 <---- ie. when i am proccessing line 4 a new Request from clientsocket1 arrives
//Line 5
end;
end.
您描述的场景不可能发生。当ServerSocket1ClientRead
事件处理程序正在执行时,它不会以可重入的方式调用。好吧,除非你打电话给Application.ProcessMessages
。所以,不要那样做!