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From Alex Miller <a...@puredanger.com>
Subject SaslSocketServer.close() doesn't close?
Date Mon, 13 Jun 2011 16:37:59 GMT
Hello all,

I've been having an issue in some tests where it appears that closing
a SaslSocketServer does not actually cause the socket to be closed.
The code below reproduces roughly what happens in the course of a much
more complicated test.  Basically I start a socket server, close() it,
then try to start another on the same port which fails to bind as the
address is in use.

>From trolling through the code, it is not immediately obvious that any
code exists to actually close the socket.  The nio thread group gets
interrupted which from debugging into this, does seem to cause the
Connection threads to break out of their loop and close but the main
socket listener (which is not a member of the thread group) and the
socket channel do not get closed.

Am I crazy?

import java.net.InetAddress;
import java.net.InetSocketAddress;

import org.apache.avro.Protocol;
import org.apache.avro.Schema;
import org.apache.avro.Protocol.Message;
import org.apache.avro.io.Decoder;
import org.apache.avro.io.Encoder;
import org.apache.avro.ipc.Responder;
import org.apache.avro.ipc.SaslSocketServer;
import org.apache.avro.ipc.Server;

public class SocketDoesntClose extends Responder {

  public static void main(String[] args) throws Exception {

    Protocol prot = new Protocol("c", "a.b");

    // start on port 9999
    InetSocketAddress addr = new
InetSocketAddress(InetAddress.getLocalHost(), 9999);
    Server server = new SaslSocketServer(new SocketDoesntClose(prot), addr);

    // stop -- I would expect this to fully release the socket


    // start on same socket again -> address already in use
    server = new SaslSocketServer(new SocketDoesntClose(prot), addr);

  // dummy implementation
  public SocketDoesntClose(Protocol local) {

  public Object readRequest(Schema actual, Schema expected, Decoder in) {
    return null;

  public Object respond(Message message, Object request) {
    return null;

  public void writeError(Schema schema, Object error, Encoder out) {

  public void writeResponse(Schema schema, Object response, Encoder out) {

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