How to terminate a thread blocking on socket IO operation instantly?

by

There are (potentially) three ways to do this:

  • Calling Socket.close() on the socket will close the associated InputStream and OutputStream objects, and cause any threads blocked in Socket or (associated) stream operations to be unblocked. According to the javadoc, operations on the socket itself will throw a SocketException.

  • Calling Thread.interrupt() will (under some circumstances that are not specified) interrupt a blocking I/O operation, causing it to throw an InterruptedIOException.

    Note the caveat. Apparently the “interrupt()” approach doesn’t work on “most” modern Java platforms. (If someone else had the time and inclination, they could possible investigate the circumstances in which this approach works. However, the mere fact that the behavior is platform specific should be sufficient to say that you should only use it if you only need your application to work on a specific platform. At which point you can easily “try it” for yourself.)

  • A possible third way to do this is to call Socket.shutdownInput() and/or Socket.shutdownOutput(). The javadocs don’t say explicitly what happens with read and/or write operations that are currently blocked, but it is not unreasonable to think that they will unblock and throw an exception. However, if the javadoc doesn’t say what happens then the behavior should be assumed to be platform specific.

More Related Contents:

  1. java.io.StreamCorruptedException: invalid type code: 00
  2. Sending a message to all clients (Client – Server communication)
  3. Do Java sockets support full duplex?
  4. How do I close a port in a case of program termination?
  5. How to wait for all threads to finish, using ExecutorService?
  6. How to use wait and notify in Java without IllegalMonitorStateException?
  7. java thread.sleep puts swing ui to sleep too
  8. The difference between the Runnable and Callable interfaces in Java
  9. “Java DateFormat is not threadsafe” what does this leads to?
  10. How is CountDownLatch used in Java Multithreading?
  11. Are java primitive ints atomic by design or by accident?
  12. MVC Progress Bar Threading
  13. how to achieve transfer file between client and server using java socket [duplicate]
  14. Why are wait() and notify() declared in Java’s Object class?
  15. Constructor synchronization in Java
  16. TimerTask vs Thread.sleep vs Handler postDelayed – most accurate to call function every N milliseconds?
  17. Are volatile variable ‘reads’ as fast as normal reads?
  18. Animations when using Gridbag Layout.
  19. How is Java’s ThreadLocal implemented under the hood?
  20. How to wait for all tasks in an ThreadPoolExecutor to finish without shutting down the Executor?
  21. Are Thread.sleep(0) and Thread.yield() statements equivalent?
  22. What could be the cause of RejectedExecutionException
  23. Multiple clients access the server concurrently
  24. Creating the ServerSocket in a separate thread?
  25. Why does an IllegalThreadStateException occur when Thread.start is called again
  26. Java Executors: how can I stop submitted tasks?
  27. Static variables and multithreading in java
  28. Dynamic Thread Pool
  29. JAVAFX : why wait cursor needs a new thread?
  30. If a synchronized method calls another non-synchronized method, is there a lock on the non-synchronized method

Leave a Comment