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Connect to Kafka server over SSLby cLive ;-) (Prior)
|on Jan 14, 2020 at 02:05 UTC||Need Help??|
cLive ;-) has asked for the wisdom of the Perl Monks concerning the following question:
I have a requirement to connect to a Kafka server over SSL. I have the certs, private key, and password, but I can't work out how to even test a connection. Looking at the Kafka modules, they use Socket to create the connection, and the Kafka modules don't support SSL.
I've started playing with IO::Socket::SSL to try to connect to the server, but I think I'll have to work out how to do this at the lower level Socket interface, even if I manage to connect using IO::Socket::SSL, because of how Kafka::IO is written. I know very little about socket coding, nor why the decision was made to use Socket over IO::Socket so this feels like a very steep learning curve. So far, I've managed to create the socket, and I can send data to the server, but I'm guessing the server thinks it's just gibberish, because it closes the socket straight away. Or, possibly, I'm not doing whatever it is I need to do with the password to get a valid response.
Does anyone have any pointers that could get me going in the right direction. I did drag out my old copy of Stein's Network programming with Perl, but I don't see any references to SSL in it.
I get no errors when running this at debug level 3:
but that doesn't include using the password (I'm not sure whether that's for the SSL level or Kafka level ATM). Is there something I can print to the socket to get metadata from the server?
I tried looking for info on the raw socket commends that Kafka uses, but I'm only finding API docs right now :/
All pointers welcomed...
updateGot it working with Net::Kafka after following the pointers below. For future reference for those that need it, here's the code I used:
The module is sparsely documented, so I ended up doing a little hit and miss testing to get here.