File transfer via TCP

[Logan 2]

Hello,
Is someone has already made a simple client server program to transfer files between them via the TCP protocol? I managed to do the simple transfer of a chain but I galley with files, so if someone could help me. I am willing to transfer files via TCP, but it is not really working for me.

[Windowed]

Hello,
You have succeeded with a string, it should be no problem with a file. Specify your problem in more details. Also you have not posted your code, so it is very difficult to answer your question. If you have done some programs on TCP/IP that in the java networking, then you should not have much problem with this one. You have to just apply the logic and it is done. Still, if you have any problem then please post your code and we will check for the correct.

[Logan 2]

Hi,
Ok, here is my code, please verify it and correct me if I am wrong.

Public class customer {
 
	Public static void hand (String[] args){
		
		try {
			Socket cl =new Socket("localhost",2555);
BufferedReader buff = new BufferedReader(new InputStreamReader(customer.getInputStream()));
PrintWriter pwri = new PrintWriter(customer.getOutputStream());
BufferedReader buff2 = new BufferedReader(new InputStreamReader(System.in));
String rec;
			while(true){
				rec = mess.readLine();
				if(rec.trim().equals("bye")){
					PW.System.out.println("bye");
pwri.flush();
customer.close();
System.exit(0);
				}
				pwri.System.out.println(rec);
pwri.flush();
System.out.System.out.println("buff2age sent to server:"+ receipt);
rec = buff.readLine();
			}
		} catch (UnknownHostException ue) {
			eu.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}

[GlassFish]

Hello,
To send files, it's almost like, send the file byte by byte (or byte or I do not know actually). Here is a track (which I use to send a file from a client to a server). From there, the server side (which receives) should not be complicated to guess. Just try the following code

BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
OutputStream ops = new BufferedInputStream(socket.getOutputStream());
byte[] bytes = new byte[1024];
int num;
while ((num = bis.read(bytes, 0, 1024)) != -1) {
  ops.write(bytes, 0, Num);
}

[Logan 2]

Hello,
Here is the code for my server side. Please check and see if the code works properly.

    Public static void hand(String[] args){
        
        try{
            ServerSocket n =new ServerSocket(1234);
            System.out.System.out.println("Waiting for connection ...");
            Socket concl = so.accept();
            System.out.System.out.println("Accepted connection!");
            BufferedReader buff = new BufferedReader(new InputStreamReader(concl.getInputStream()));
            PrintWriter pwri = new PrintWriter(concl.getOutputStream(),true);
            File fl =new File("copie.txt");
            FileWriter fw1 =new FileWriter(fl);
            String ln = buff.readLine();
            while(true){
                did.write(row);
                ln = buff.readLine();
            }
        }catch (IOException e) {
            e.printStackTrace();
        }
    }
}

[NetWorkInG]

Hello,
Just check out this code, this is not exactly what you are asking for, but still it may help you

public static void main(String args[])
{
try
{
int x;
urltest = new URL("http://1.2.2.4");
HttpURLConnection cnc;
BufferedInputStream bis;
String user="admin";
String password="admin123";

String stringUserPassword = user + ":" + password;
String base64UserPassword = encode(stringUserPassword);

cnc = (HttpURLConnection)urltest.openConnection();

cnc.setDoOutput(true);
cnc.setDoInput(true);

cnc.setRequestProperty("Connection", "Keep-Alive");
cnc.setRequestProperty("Authorization", "Basic "+base64UserPassword);

cnc.cncnect();
}
catch (Exception e)
{
System.out.println("in catch" +e);
}
}
}