Wrote a connection to the socket service, send data to the service and receive data after successful connection

1, Connecttoserverbytcp This method is connected to the socket service

Directly on the code

public static Socket connecttoserverbytcp (String serverip, int serverport, int timeoutsecond, int Connectcs) {//Establish pass
		Connection Socket othersocket = null;
		Boolean connectok = false;
			try {//creates a stream socket and connects it to the specified port number on the specified host Othersocket = new Socket ();
			System.out.println ("ServerIP" + ServerIP + ", serverport" + serverport);
			SocketAddress socketaddress = new Inetsocketaddress (ServerIP, ServerPort); Receive timeout limit of 5-180 seconds, connection timeout limit in 5 seconds Timeoutsecond = (Timeoutsecond < 1 | | timeoutsecond > 180)?
			1:timeoutsecond; for (int i = 0; i < Connectcs; i++) {try {othersocket.connect (socketaddress, 5000);//Connection timeout limit is 5 seconds OtherS
					Ocket.setsotimeout (Timeoutsecond);//Set read operation timeout time 5-180 seconds Connectok = true;
				Break
				} catch (Exception E1) {Log.error (E1);
				}} if (!connectok) {if (othersocket! = null) othersocket.close ();
			Othersocket = null;
		} return othersocket;
			} catch (Exception e) {log.error (e); E.printstacktrace ();

	} return othersocket; }

2. Send and receive data, BUFS is the data to be sent to the server, BufR is the data returned by the server

public static void Socksend (Socket socketS, Buf bufs,buf BufR) throws Posexception {//Send network data Boolean OK = false;
		String SERR = "";
		DataOutputStream out = null;
			try {if (Bufs.get_datalen () < 1) SERR = "Data length [" + Bufs.get_datalen () + "] invalid";
			Send data to server side out = new DataOutputStream (Sockets.getoutputstream ());
			Out.write (Bufs.get_databuf (), 0, Bufs.get_datalen ());
			Thread.Sleep (200);
			Out.flush ();
			OK = true; Closes the client's output stream.
		Equivalent to adding an end tag to the stream-1. This way the Realine method of the input stream of the server reads a-1 and then ends the ReadLine method Sockets.shutdownoutput ();
			} catch (Exception e) {log.error (e);
			OK = false;
			SERR = E.tostring ();
		E.printstacktrace ();
		
		} if (!ok) throw new Posexception ("", "Send Bank data Exception", SERR);
		Receive Message int getlen = 0;
		InputStream inputstream = null;
		DataInputStream bs = null;
			try {InputStream = Sockets.getinputstream ();
			BS = new DataInputStream (InputStream);
			Bufr.set_datalen (0);
			byte[] data = new byte[4096];
			Getlen = bs.read (data); BUfr.set_buflen (Getlen);
			Log.info ("tcpreadlen======" + Getlen);


				if (Getlen > 1) {system.arraycopy (data, 0, Bufr.get_databuf (), 0, Getlen);
				Bufr.set_datalen (Getlen);
			Log.info ("tcpreceivemsg======" + byteutils.getstring (Bufr.get_databuf ()));
				} else {sErr = "failed to receive data: The actual collection length [" + Getlen + "] is invalid";
				Getlen = 0;
			Bufr.set_datalen (0);
			} bs.close ();
			Inputstream.close ();
			Sockets.close ();
		Log.info ("-------Disconnect the Socket");
			} catch (IOException E2) {Log.error (E2);
		E2.printstacktrace ();
		} if (Getlen < 2) {throw new Posexception ("", "Receive data Failed", SERR); }
	}

3, the simulation test received normal data, OK