Redirecting Problem on WebSockets (wodVPN)

I did use Ararat Synapse and same issues ( connection refused, reset by peer,... ) become only when I use communication in Channel redirections.
For Example; I Connect one peer to other over channel and it works good after I send a buffer it work if I send a string after this buffer, and I send another string but it arrive empty string and connection not lost after many try some times second string arrive correct otherwise empty string. And I think websocket issue is like this

Synapse is socket library which is using blocked sockets.