Transceiver issuses with multiple data streams

[leloup314]

When multiple data streams connect to the same transceiver (such as in the hit correlator) it occurs that only one data stream actually receives data, the other is connected but always raises zmq.Again when trying to receive data. @YannickDieter could you check if you can use pymosa to replay some telescope / FEI4 data and check if the following is true:

• Correlating M26 to M26 should work
• Correlating M26 to FEI4 probably does not work

[leloup314]

I suspect this is due to the socket spawning happening outside the respective threads