HostPortWaitStrategy does not support UDP ports

[pravussum]

I have a testcontainer where I want to expose a UPD port, therefor I used GenericContainers addFixedExposedPort method (only that allows to specify the protocol).

addFixedExposedPort(5775, 6831, InternetProtocol.UDP);
addExposedPort(16686);

The container fails to come up with this error:

Caused by: org.testcontainers.containers.ContainerLaunchException: Timed out waiting for container port to open (localhost ports: [32790, 5775] should be listening)
at org.testcontainers.containers.wait.strategy.HostPortWaitStrategy.waitUntilReady(HostPortWaitStrategy.java:47)
at org.testcontainers.containers.wait.strategy.AbstractWaitStrategy.waitUntilReady(AbstractWaitStrategy.java:35)
at org.testcontainers.containers.wait.HostPortWaitStrategy.waitUntilReady(HostPortWaitStrategy.java:23)
at org.testcontainers.containers.wait.strategy.AbstractWaitStrategy.waitUntilReady(AbstractWaitStrategy.java:35)
at org.testcontainers.containers.GenericContainer.waitUntilContainerStarted(GenericContainer.java:582)
at org.testcontainers.containers.GenericContainer.tryStart(GenericContainer.java:259)
... 35 more

It looks to me like
https://github.com/testcontainers/testcontainers-java/blob/master/core/src/main/java/org/testcontainers/containers/wait/strategy/HostPortWaitStrategy.java or rather
https://github.com/testcontainers/testcontainers-java/blob/master/core/src/main/java/org/testcontainers/containers/wait/internal/ExternalPortListeningCheck.java
is only supporting TCP ports when checking the port availability (DatagramSocket should be used depending on the used protocol).

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you believe this is a mistake, please reply to this comment to keep it open. If there isn't one already, a PR to fix or at least reproduce the problem in a test case will always help us get back on track to tackle this.

[stale]

This issue has been automatically closed due to inactivity. We apologise if this is still an active problem for you, and would ask you to re-open the issue if this is the case.

[mkrzywanski]

I think this is covered by this PR

[nathsomdatta59]

@mkrzywanski I tried to add a UDP port. But I think in the testcontainer approach, it tries to bind the UDP port. When it does that my host application is not able to listen to the UDP port and get traffic. My use case is as follows :
I have a containerized application which is sending traffic to a UDP port. In my test case using the test container, I would like to get the traffic from the UDP port.
I can do that in my unit test by just opening up a socket connection to that port. But when I use test container approach and try to expose a UDP port, it gets bound, and I am "address/port already in use" exception.

I tried addFixedExposedPort(p, p, InternetProtocol.UDP));
Also, tried the strategy from : #4667