After testing PR #196 I can notice that there is some instability on Grin++ nodes. I'm using the next list known Grin++ nodes:

[
	"217.160.242.228",
	"217.160.66.118",
	"212.227.210.43",
	"93.90.194.26",
	"82.165.107.169",
	"107.174.63.210",
	"grinpp01.grinnode.live",
	"grinpp02.grinnode.live",
	"grinpp03.grinnode.live"
]

All of the above nodes are Grin++ public nodes except for one: 107.174.63.210. Although the node manages to connect to the peers, the Grin++ fails to maintain a stable connection to each of them.

After few seconds only the MW/Grin 5.1.1 remain relatively stable.

The next are examples of the logs messages:

Disconnecting from socket 142.132.167.15:3414. Error: The I/O operation has been aborted because of either a thread exit or an application request.
Disconnecting from socket 82.165.107.169:3414. Error: End of file
Disconnecting from socket 107.174.63.210:3414. Error: An operation was attempted on something that is not a socket.
Disconnecting from socket 142.132.168.230:3414. Error: <none>