IdUDPServer中文汉字乱码 及IdTCPClient

官网

http://www.indyproject.org/docsite/html/frames.html?frmname=topic&frmfile=TIdTCPServer_OnExecute.html

IdUDPServer1中文汉字乱码，用IndyTextEncoding_OSDefault字符编码就解决问题了

IdUDPServer1.Send(1.1.1.1,8080,'中国人',IndyTextEncoding_OSDefault);

发送字节

IdUDPServer1.SendBuffer(const System::UnicodeString AHost, const System::Word APort, const Idglobal::TIdBytes ABuffer);

TIdBytes 就是TBytes就是TByteDynArray

udp bytes byte

procedure TForm1.IdUDPServer1UDPRead(AThread: TIdUDPListenerThread; const AData: TIdBytes; ABinding: TIdSocketHandle);
begin
   lastMsg := BytesToString(AData, IndyTextEncoding_OSDefault);

end;

TCP,IdTCPClient

IndyTextEncoding

IdTCPClient1.IOHandler.WriteLn(sendData,IndyTextEncoding(TEncoding.ANSI));

发送中文如果是乱码请用这种方法编码修改就可以了，ansi、 utf8等看对方的要求编码格式了。

bs：TBytes；

setlength(bs,8);

IdTCPClient1.IOHandler.Write(TIdBytes(bs));

c++

String rstr = BytesToString(AData, IndyTextEncoding_UTF8());

https://stackoverflow.com/questions/13839094/how-to-read-all-bytes-from-server-using-indy-client-in-delphi

https://forums.embarcadero.com/thread.jspa?threadID=211952

IdTCPClient1->Host =GStack->LocalAddress;;
    IdTCPClient1->Port = 9080;
    IdTCPClient1->Connect();

TCP发送buff

TFileStream *fs;
String FilePath=”c:\\test.data";
fs = new TFileStream(fileNamePath, fmOpenRead);
 IdTCPClient1->IOHandler->WriteBufferOpen();
               IdTCPClient1->IOHandler->WriteLn(fileName);
               IdTCPClient1->IOHandler->Write(fs,false,True);
               delete fs;
               IdTCPClient1->IOHandler->WriteBufferClose();

TCP接收buff

void __fastcall TFrmServer::IdTCPServer1Execute(TIdContext *AContext)
{
 TFileStream *fs;
   try
   {
     FileName = AContext->Connection->IOHandler->ReadLn("",);
   }
   catch(...)
   {
     return;
   }

   if( FileName.IsEmpty() )
      return;
   FileNew = DataFilePath + FileName;
  fs = new TFileStream(FileNew, fmCreate);

   AContext->Connection->IOHandler->ReadStream (fs,-,false);
   delete fs;
     //新版没有这个线程函数了
    //AContext->Connection->Synchronize(frmksjg->BitBtn1->Click);
}

https://stackoverflow.com/questions/10361446/delphi-indy-10-demo-application-client-server

https://stackoverflow.com/questions/25438309/indy10-idtcpclients-iohandler-send-additional-data

https://stackoverflow.com/questions/25438309/indy10-idtcpclients-iohandler-send-additional-data

https://forums.embarcadero.com/thread.jspa?threadID=115603

// 在线程中
    // while(!Terminated && MainForm->IdTCPClient1->Connected())
    {
        IdTCPClient1->Socket->CheckForDataOnSource(100);

if (IdTCPClient1->Socket->InputBufferIsEmpty() == false)
        {
            int nReceive = IdTCPClient1->Socket->InputBuffer->Size;
            char Buf[10240];
            // nReceive = Min(nReceive, sizeof(Buf));

TIdBytes tmp;
            IdTCPClient1->Socket->ReadBytes(tmp, nReceive); // 读数据

BytesToRaw(tmp, Buf, nReceive);
            // MainForm->fsUpdateFile->Write(Buf, nReceive); //写入文件
        }
    }

看客户发完等待接收

  Sleep();
 idbuf:TIdBytes;
  while True do
  begin
     tcpClient1.IOHandler.CheckForDataOnSource();
    if  tcpClient1.IOHandler.InputBuffer.Size > then begin
    SetLength(barray, tcpClient1.IOHandler.InputBuffer.Size);
        tcpClient1.IOHandler.ReadBytes( idbuf, tcpClient1.IOHandler.InputBuffer.Size,false);
        sret := tencoding.Default.GetString(idbuf);
        break;
    end;

  end;

c++

           TBytes bv;

         IdTCPClient1->IOHandler->CheckForDataOnSource();
        if (!IdTCPClient1->IOHandler->InputBufferIsEmpty())
        {
            int nReceive = IdTCPClient1->IOHandler->InputBuffer->Size;
            bv.set_length();
            bv.set_length(nReceive);
            IdTCPClient1->IOHandler->ReadBytes(bv, nReceive, false);
            sret = TEncoding::Default->GetString(bv);
        }