Do not resolve names before ZMQ connect calls.

[eflumerf]

Have publishers bind to * (all addresses)

[eflumerf]

Related: DUNE-DAQ/utilities#18 DUNE-DAQ/iomanager#56

[plasorak]

Ok so looking at the connectivity service I see entries like:

timesync_fake_hsi: Connection(uri='tcp://np04-srv-004:37685', data_type='TimeSync', connection_type=1, time=datetime.datetime(2023, 5, 30, 11, 23, 51, 655020))
fragments_to_dataflow0: Connection(uri='tcp://np04-srv-004:33837', data_type='Fragment', connection_type=0, time=datetime.datetime(2023, 5, 30, 11, 23, 51, 652151))

which is what I expect.

Looking at the logs (grep -B 2 "Connection String" *txt), I see:
Push: ZmqSenderImpl.hpp:81] Connection String is tcp://np04-srv-004:33837 -> sends to 004.
Pull: ZmqReceiver.cpp:88] Connection String is tcp://10.73.136.77:* -> receives (this IP is localhost?)
Publish: ZmqSenderImpl.hpp:81] Connection String is tcp://*:* -> sends to whoever wants it, hence the * in the hostname?
Subscribe: ZmqSubscriber.cpp:73] Connecting to publisher at tcp://np04-srv-004:37685 (with grep "Subscriber" *txt). -> subscribes to the publisher's address.

Also, can you remind me what it means for a port number to be *? Is this because the connectivity service is in charge of providing the port number?

[eflumerf]

For bind endpoints (Receive, Publish), a * in the port number means "use any available port". daqconf will only put * in the port number when we're not in Kubernetes mode. A * in the hostname means "bind to all interfaces".

[plasorak]

Also, this line https://github.com/DUNE-DAQ/ipm/blob/eflumerf/DontResolveConnect/plugins/ZmqSubscriber.cpp#LL73C1-L73C1 seems to be appearing in the log way too much (for every receive?). I don't think we can have that.

[eflumerf]

Moved that log message (and another one which was logging at the info level) to debug

[plasorak]

Works on APA1 and 2