Reliable packets are not so reliable

[SheridanR]

Hi,

I have a client/server application where each host has two channels, one for reliable packets and another for unreliable ones. On the unreliable channel i transmit about 3/kbps and the reliable channel is quite infrequent but occasional sees whole packets as large as 250 bytes. Trouble is that these "reliable" packets are frequently dropped, and I have no idea why as I'm testing over a local loopback and the throughput is obviously very small. If I raise the traffic on the unreliable channel a few times to eg 10/kbps virtually nothing gets through on the reliable channel. What gives?

[cher-nov]

Interesting. Could you provide a minimal reproducible example of code please?