test server: take care of siginterrupt() deprecation #6529
Yes, I agree and have looked at them carefully. However I don't see how they can be related to this PR: the failing tests deal with direct ftps and we have a proxy input and an http2 server logs. Unless I misunderstand something, it's like the test environment sets the target port for client where the wrong server listens.
The failing tests are all tests using ftps server and performing a data transfer.
In any case, I will change a commit a little bit, so consider this PR on hold. Thanks.