INDY流的发送和接收

发送

try
    s := 'Hello world!';
    stream := TStringStream.Create(s);
    IdTCPClient1.OpenWriteBuffer;
    IdTCPClient1.WriteInteger(stream.Size);//注意这里:要先写入流的长度,在读取的时候如果使用      AThread.Connection.ReadStream(stream);
    IdTCPClient1.WriteStream(stream, true);
  finally
    IdTCPClient1.CloseWriteBuffer;
    stream.Free;
  end;

接收

procedure TServerForm.IdTCPServer1Execute(AThread: TIdPeerThread);
var stream: Tstream;
begin

  if not AThread.Terminated and AThread.Connection.Connected then
  begin
    stream := TStringStream.Create('');

    AThread.Connection.ReadStream(stream);//这句相当于ReadStream(stream,-1,false),就是根据流的前四个字节读出流长度,然后再将流读出
    stream.Position := 0;
    Memo1.Lines.LoadFromStream(stream);

  end;

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