server.version call to electrum used as a keep alive

[nkuba]

Currently a server.version method call to electrum server is used as a keep alive:

connectrum/connectrum/client.py

Line 167 in 99948f9

vers = await self.RPC('server.version')

According to the electrum protocol server.version is allowed to be called only once:

Identify the client to the server and negotiate the protocol version. Only the first server.version() message is accepted.

https://electrumx.readthedocs.io/en/latest/protocol-methods.html#server-version

Keep alive can be achieved with server.ping method:
https://electrumx.readthedocs.io/en/latest/protocol-methods.html#server-ping

[xavierfiechter]

This is fixed since 0.8.1.

[doc-hex]

yup, good point. closing issue