Have I found a bug ?
I start a receiver and it subscribes to ports 6666 and 6667.
In a loop, it starts trying to recv messages. I set timeout
to 700 msec, so it keeps looping and tells me whenever it
gets a message.
From two separate shells, I start two senders simultaneously,
node A sending to 6666, and node B sending to 6667.
Both senders will send 10 messages.
I want to see the receiver's print-outs indicating that it
is receiving messages from both senders, interleaved.
The receiver gets messages only from sender A until
sender A stops.
Then the receiver gets all the messages from sender B.
Sender B hangs at its first call to pn_messenger_send()
until sender A calls stop().