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POWhat to do when ServerSocket throws IOException and keeping server running
 

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    <p>Basically I want to create a rock solid server.</p> <pre><code>while (keepRunning.get()) { try { Socket clientSocket = serverSocket.accept(); ... spawn a new thread to handle the client ... } catch (IOException e) { e.printStackTrace(); // NOW WHAT? } } </code></pre> <p>In the IOException block, what to do? Is the Server socket at fault so it need to be recreated? For example wait a few seconds and then</p> <pre><code>serverSocket = ServerSocketFactory.getDefault().createServerSocket(MY_PORT); </code></pre> <p>However if the server socket is still OK, then it is a pity to close it and kill all previously accepted connections that are still communicating.</p> <p>EDIT: After some answers, here my attempt to deal with the IOException. Would the implementation be guaranteeing keeping the server up and only re-create server socket when only necessary?</p> <pre><code>while (keepRunning.get()) { try { Socket clientSocket = serverSocket.accept(); ... spawn a new thread to handle the client ... bindExceptionCounter = 0; } catch (IOException e) { e.printStackTrace(); recreateServerSocket(); } } private void recreateServerSocket() { while (keepRunning) { try { logger.info("Try to re-create Server Socket"); ServerSocket socket = ServerSocketFactory.getDefault().createServerSocket(RateTableServer.RATE_EVENT_SERVER_PORT); // No exception thrown, then use the new socket. serverSocket = socket; break; } catch (BindException e) { logger.info("BindException indicates that the server socket is still good.", e); bindExceptionCounter++; if (bindExceptionCounter &lt; 5) { break; } } catch (IOException e) { logger.warn("Problem to re-create Server Socket", e); e.printStackTrace(); try { Thread.sleep(30000); } catch (InterruptedException ie) { logger.warn(ie); } } } } </code></pre>
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