I have not looked at rexxars/sse-channel. If you disconnect the client and the client is behind some firewalls (or in some other circumstances), the server mig

I have not looked at rexxars/sse-channel. If you disconnect the client and the client is behind some firewalls (or in some other circumstances), the server might not get notified until it writes something, but the client will reconnect automatically. This means that the server now has two connections, and to handle the error-on-write. If the server periodically writes something, then it will get the error and can recover. If the server does not (however) it will eventually run out of connections. However another approach is to simply set the socket timeout (SO_RCVTIMEO) every time you write. This disconnects the socket automatically, and the client will (if still around) will reconnect. The savings can be significant on a busy server.