Add affected `socketAddress` to `SessionStateListener#onConnectException`

[stasal]

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Please, consider adding socketAddress to exception passed as argument for quickfix.SessionStateListener#onConnectException

This information is available in quickfix.mina.initiator.IoSessionInitiator.ConnectTask#handleConnectException method and it can be very useful for troubleshooting outside the library

[chrjohn]

sounds like a sensible enhancement. Are you able to submit a PR for this?

[stasal]

@chrjohn Sure! Opened a pull request, take a look. Maybe I need to implement some tests for new code?

[chrjohn]

Thanks for the PR, let's continue the discussion there.