Hi Endre,
I wrote a small test program that creates a socket channel, closes it and
creates another one using the same port:
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.StandardSocketOptions;
import java.nio.channels.NetworkChannel;
import java.nio.channels.ServerSocketChannel;
public class Main {
public static void main(String[] args) throws IOException,
InterruptedException {
int port = Integer.parseInt(args[0]);
SocketAddress addr = new InetSocketAddress(port);
System.out.println("Binding server socket to " + addr);
ServerSocketChannel s = ServerSocketChannel.open();
s.setOption(StandardSocketOptions.SO_REUSEADDR, true);
System.out.println("Created server socket channel " + s);
NetworkChannel c = s.bind(addr);
System.out.println("Bound server socket to " + addr);
s.close();
System.out.println("Closed channel: " + s);
Thread.sleep(1000);
System.out.println("Binding server socket to " + addr);
ServerSocketChannel s2 = ServerSocketChannel.open();
s2.setOption(StandardSocketOptions.SO_REUSEADDR, true);
System.out.println("Created server socket channel " + s2);
NetworkChannel c2 = s2.bind(addr);
System.out.println("Bound server socket to " + addr);
s2.close();
System.out.println("Closed channel: " + s2);
}
}
It works perfectly both on Linux and on Windows. Here is the output on Windows:
C:\Users\Michael\Desktop>java Main 8888
Binding server socket to 0.0.0.0/0.0.0.0:8888
Created server socket channel sun.nio.ch.ServerSocketChannelImpl[unbound]
Bound server socket to 0.0.0.0/0.0.0.0:8888
Closed channel: sun.nio.ch.ServerSocketChannelImpl[closed]
Binding server socket to 0.0.0.0/0.0.0.0:8888
Created server socket channel sun.nio.ch.ServerSocketChannelImpl[unbound]
Bound server socket to 0.0.0.0/0.0.0.0:8888
Closed channel: sun.nio.ch.ServerSocketChannelImpl[closed]
There is also AsynchronousServerSocketChannel, but I doubt this makes a big
difference. I really don't think that NIO does not properly unbind sockets
on Windows. There might be a small delay, but certainly not 10 Minutes! As
far as I know StandardSocketOptions.SO_REUSEADDR should allow to reuse
sockets that are no longer in use, even if the operating system did not
unbind them yet.
If there is anything I can do to help, let me know.
Best regards,
Michael
On Tuesday, April 5, 2016 at 5:08:09 PM UTC+2, drewhk wrote:
>
>
>
> On Tue, Apr 5, 2016 at 5:04 PM, Michi <michael...@physik.tu-muenchen.de
> <javascript:>> wrote:
>
>> Hi Endre,
>>
>> even after 10 Minutes TCPView shows that the socket is still bound by
>> jawaw.exe. If I close the application, the socket gets unbound immediately.
>> That's why I am wondering if I do something wrong or if this is a bug in
>> Akka HTTP.
>>
>
> We use NIO underneath and don't do anything special, so I am not sure what
> we can do here (it works on all other OSes).
>
>
>>
>> I tried to use a independent Actor System for the Http Server class and
>> shut the system down after unbinding, but that does not help either.
>>
>
> At that point Akka had cleaned up every actor, so I am not sure what else
> to do :(
>
>
>>
>> Unfortunately our customer uses Windows and I am wondering if there is
>> anything I can do about it or if it would be better to reimplement the code
>> with Apache Http Components.
>>
>
> You can try out other frameworks, if they happen to work (and use NIO)
> then at least we can see what magic they do to make Windows happy :(
>
> -Endre
>
>
>>
>> best regards,
>> Michael
>>
>> On Tuesday, April 5, 2016 at 2:07:52 PM UTC+2, drewhk wrote:
>>>
>>> Hi,
>>>
>>> As far as I know event though NIO reports the unbind, unbinding on
>>> Windows is not immediate and you are not guaranteed to be able to bind
>>> again immediately. I don't know if this comes from Windows or the NIO
>>> windows drivers though.
>>>
>>> -Endre
>>>
>>> On Tue, Apr 5, 2016 at 2:05 PM, Michi <michael...@physik.tu-muenchen.de>
>>> wrote:
>>>
>>>> Hi,
>>>>
>>>> we have a problem with Akka HTTP on Windows: after creating a server
>>>> binding and unbinding it, it is not possible to bind it again. We get a
>>>> akka.stream.BindFailedException. On Linux, this works without problems.
>>>>
>>>> The application uses the following code to create the server binding:
>>>>
>>>> private val binding: Future[ServerBinding] = {
>>>> val httpsContext = if (protocol == Protocol.Https)
>>>> Some(HttpsContexts.serverContext) else None
>>>> val serverSource: Source[Http.IncomingConnection,
>>>> Future[Http.ServerBinding]] = Http(actorSystem).bind(interface =
>>>> interface,
>>>> port = port, httpsContext = httpsContext)
>>>>
>>>> logger.info("Binding to interface " + interface + ":" + port + "
>>>> using " + protocol)
>>>>
>>>> val bindingFuture: Future[ServerBinding] =
>>>> serverSource.to(Sink.foreach { connection =>
>>>> connection.handleWith(route)
>>>> }).run()
>>>> bindingFuture
>>>> }
>>>>
>>>> binding onComplete {
>>>> case Success(result) => logger.info("Bound to interface " +
>>>> interface + ":" + port + " using " + protocol)
>>>> case Failure(reason) => logger.error("Could not bind to interface "
>>>> + interface + ":" + port + " using " + protocol, reason)
>>>> }
>>>>
>>>> protected override def dispose(): Unit = {
>>>> // stop webserver
>>>> for(binding <- binding) {
>>>> binding.unbind() onComplete {
>>>> case Success(result) => logger.info("Unbound " + binding)
>>>> case Failure(reason) => logger.error("Could not unbind " +
>>>> binding, reason)
>>>> }
>>>> }
>>>> }
>>>>
>>>> Restarting the application solves the problem.
>>>>
>>>> Is there anything I can do to solve the problem?
>>>>
>>>> Thanks,
>>>> Michael
>>>>
>>>> --
>>>> >>>>>>>>>> Read the docs: http://akka.io/docs/
>>>> >>>>>>>>>> Check the FAQ:
>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>> >>>>>>>>>> Search the archives:
>>>> https://groups.google.com/group/akka-user
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>>>
>>> --
>> >>>>>>>>>> Read the docs: http://akka.io/docs/
>> >>>>>>>>>> Check the FAQ:
>> http://doc.akka.io/docs/akka/current/additional/faq.html
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>
--
>>>>>>>>>> Read the docs: http://akka.io/docs/
>>>>>>>>>> Check the FAQ:
>>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html
>>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user
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