Android TCP stream socket data Send/Receive methods

In this post we will see how to do interaction with TCP server data using socket in simple steps.

Step 1 : Connect with TCP server .
To connect with TCP server we need IP address and port number .

 private void startConnection() throws UnknownHostException, IOException {  
           Socket client = new Socket("Your IP address", "TCP_SERVER_PORT");  
           BufferedReader input = new BufferedReader(new InputStreamReader(client.getInputStream()));  
           BufferedWriter output = new BufferedWriter(new OutputStreamWriter(client.getOutputStream()));  
      }  

Step 2 : After connection we can send data to server.

 private void sendDataOverServer() throws IOException {  
           String outMsg = "TCP connecting to " + TCP_SERVER_PORT+ System.getProperty("line.separator");  
           output.write(outMsg);  
           output.flush();  
           Log.v("TcpClient", "sent: " + outMsg);  
      }  

Step 3 : When we send data to server we get response using following method.

 private String receiveDataFromServer() throws IOException {  
           String inmsg = input.readLine() + System.getProperty("line.separator");  
           Log.i(getTag(), "received: " + inmsg);  
           return inmsg;  
      }  

Step 4 : To send commands to server we can use following method.

  PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(client  
               .getOutputStream())), true);  
         // WHERE YOU ISSUE THE COMMANDS  
         out.println(etCommand.getText().toString());  

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Step 5 : Close the socket connection after use.

 private void closeConnection() throws IOException {  
           if(client != null)   
                client.close();  
      }  

I will edit in depth details for socket connection over TCP stream soon.

Happy coding !