Does closing the inputstream of a socket also close the socket connection?

Question

In Java API,

  Socket socket = serverSocket.accept(); BufferedReader fromSocket = new BufferedReader(new InputStreamReader(socket.getInputStream())); PrintWriter toSocket = new PrintWriter(socket.getOutputStream()); //do sth with fromSocket ... and close it fromSocket.close(); //then write to socket again toSocket.print("is socket connection still available?\r\n"); //close socket socket.close();  

In the above code, after I close the InputStream fromSocket, it seems that the socket connection is not available anymore--the client wont receive the "is socket connection still available" message. Does that mean that closing the inputstream of a socket also closes the socket itself?

Answer 1

Yes, closing the input stream closes the socket. You need to use the shutdownInput method on socket, to close just the input stream:

//do sth with fromSocket ... and close it  socket.shutdownInput();  

Then, you can still send to the output socket

//then write to socket again  toSocket.print("is socket connection still available?\r\n");  //close socket  socket.close();