Fix AXIS2-5858

[cortlepp]

See discussion in Jira.

[cortlepp]

@robertlazarski can you restart the build? From the stacktrace it seems like this to just be some dns resolution failure, but I don't see how I can restart the build.

[cortlepp]

If possible I'd like to also add tests for this, but I'm unsure where/how. If someone has an idea that would be great.

[cortlepp]

There seems to be a problem in the TCPEchoRawXMLTest, for some hard to debug reason the TCP server keeps shutting down soon after or as soon as we try to connect to it. Unfortunately I have no idea why this could be the case and I'm having a really hard time getting any sensible logs out of this the server.

[robertlazarski]

@cortlepp I reviewed the builds and code, with a conclusion that map(InetAddress::getHostAddress) instead of map(InetAddress::toString) in getIpAddress() will fix the issue as the latter includes the hostname or simply / as a leading char.

The logging of unit tests can be problematic, so I temporarily insert System.out.println() statements and found the problem that way.

[cortlepp]

@robertlazarski Thanks so much for looking into this! Do you perhaps have any idea how/where I can add a good test for this?