Revert "dgram: implicit binds should be exclusive"

This reverts commit a32b92dbcf.

Reverted for breaking the parallel/test-cluster-dgram-2 test on all
platforms.

PR-URL: https://github.com/iojs/io.js/pull/279
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>

lib/dgram.js

@@ -299,7 +299,7 @@ Socket.prototype.send = function(buffer,
   self._healthCheck();
 
   if (self._bindState == BIND_STATE_UNBOUND)
-    self.bind({port: 0, exclusive: true}, null);
+    self.bind(0, null);
 
   // If the socket hasn't been bound yet, push the outbound packet onto the
   // send queue and send after binding is complete.

test/parallel/test-dgram-exclusive-implicit-bind.js

@@ -1,100 +0,0 @@
-// Copyright Joyent, Inc. and other Node contributors.
-//
-// Permission is hereby granted, free of charge, to any person obtaining a
-// copy of this software and associated documentation files (the
-// "Software"), to deal in the Software without restriction, including
-// without limitation the rights to use, copy, modify, merge, publish,
-// distribute, sublicense, and/or sell copies of the Software, and to permit
-// persons to whom the Software is furnished to do so, subject to the
-// following conditions:
-//
-// The above copyright notice and this permission notice shall be included
-// in all copies or substantial portions of the Software.
-//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
-// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
-// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
-// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
-// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
-// USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-var common = require('../common');
-var assert = require('assert');
-var cluster = require('cluster');
-var dgram = require('dgram');
-
-// Without an explicit bind, send() causes an implicit bind, which always
-// generate a unique per-socket ephemeral port. An explicit bind to a port
-// number causes all sockets bound to that number to share a port.
-//
-// The 2 workers that call bind() will share a port, the two workers that do
-// not will not share a port, so master will see 3 unique source ports.
-
-// Note that on Windows, clustered dgram is not supported. Since explicit
-// binding causes the dgram to be clustered, don't fork the workers that bind.
-// This is a useful test, still, because it demonstrates that by avoiding
-// clustering, client (ephemeral, implicitly bound) dgram sockets become
-// supported while using cluster, though servers still cause the master to error
-// with ENOTSUP.
-
-var windows = process.platform === 'win32';
-
-if (cluster.isMaster) {
-  var pass;
-  var messages = 0;
-  var ports = {};
-
-  process.on('exit', function() {
-    assert.equal(pass, true);
-  });
-
-  var target = dgram.createSocket('udp4');
-
-  target.on('message', function(buf, rinfo) {
-    messages++;
-    ports[rinfo.port] = true;
-
-    if (windows && messages === 2) {
-      assert.equal(Object.keys(ports).length, 2);
-      done();
-    }
-
-    if (!windows && messages === 4) {
-      assert.equal(Object.keys(ports).length, 3);
-      done();
-    }
-
-    function done() {
-      pass = true;
-      cluster.disconnect();
-      target.close();
-    }
-  });
-
-  target.on('listening', function() {
-    cluster.fork();
-    cluster.fork();
-    if (!windows) {
-      cluster.fork({BOUND: 'y'});
-      cluster.fork({BOUND: 'y'});
-    }
-  });
-
-  target.bind({port: common.PORT, exclusive: true});
-
-  return;
-}
-
-var source = dgram.createSocket('udp4');
-
-if (process.env.BOUND === 'y') {
-  source.bind(0);
-} else {
-  // cluster doesn't know about exclusive sockets, so it won't close them. This
-  // is expected, its the same situation for timers, outgoing tcp connections,
-  // etc, which also keep workers alive after disconnect was requested.
-  source.unref();
-}
-
-source.send(Buffer('abc'), 0, 3, common.PORT, '127.0.0.1');