Panic in the Ping function

[pdyraga]

It looks like there is a concurrency issue in the Ping function or somewhere on the lower level.

This has happened only one time for me so far, when I was listing deposits for a sweep.

panic: concurrent write to websocket connection

goroutine 31 [running]:
github.com/gorilla/websocket.(*messageWriter).flushFrame(0x14000e01620, 0x1, {0x0?, 0x0?, 0x0?})
	/Users/piotr/go/pkg/mod/github.com/gorilla/[email protected]/conn.go:617 +0x470
github.com/gorilla/websocket.(*messageWriter).Close(0x14000e01620?)
	/Users/piotr/go/pkg/mod/github.com/gorilla/[email protected]/conn.go:731 +0x4c
github.com/gorilla/websocket.(*Conn).WriteMessage(0x1072302c0?, 0x0?, {0x14000dc52f0, 0x2e, 0x30})
	/Users/piotr/go/pkg/mod/github.com/gorilla/[email protected]/conn.go:780 +0x160
github.com/checksum0/go-electrum/electrum.(*WebSocketTransport).SendMessage(0x1063f3880?, {0x14000dc52f0?, 0x1400020fb00?, 0x14000054778?})
	/Users/piotr/go/pkg/mod/github.com/keep-network/[email protected]/electrum/transport_ws.go:91 +0x124
github.com/checksum0/go-electrum/electrum.(*Client).request(0x14000339ab0, {0x10656f8d0, 0x14012a631a0}, {0x105bec784, 0xb}, {0x107263e78, 0x0, 0x0}, {0x0, 0x0})
	/Users/piotr/go/pkg/mod/github.com/keep-network/[email protected]/electrum/network.go:296 +0x180
github.com/checksum0/go-electrum/electrum.(*Client).Ping(...)
	/Users/piotr/go/pkg/mod/github.com/keep-network/[email protected]/electrum/server.go:9
github.com/keep-network/keep-core/pkg/bitcoin/electrum.(*Connection).keepAlive.func1({0x10656f8d0?, 0x14012a631a0?}, 0x1400006d5c8?)
	/Users/piotr/git/keep-network/keep-core/pkg/bitcoin/electrum/electrum.go:709 +0x60
github.com/keep-network/keep-core/pkg/bitcoin/electrum.requestWithRetry[...].func1()
	/Users/piotr/git/keep-network/keep-core/pkg/bitcoin/electrum/electrum.go:775 +0xf4
github.com/keep-network/keep-common/pkg/wrappers.DoWithRetry({0x10656f898?, 0x140000460d8?}, 0x3b9aca00, 0x14012ee0780?, 0x14001867a40?, 0x14000200ed0)
	/Users/piotr/go/pkg/mod/github.com/keep-network/[email protected]/pkg/wrappers/wrappers.go:34 +0xc8
github.com/keep-network/keep-common/pkg/wrappers.DoWithDefaultRetry(...)
	/Users/piotr/go/pkg/mod/github.com/keep-network/[email protected]/pkg/wrappers/wrappers.go:76
github.com/keep-network/keep-core/pkg/bitcoin/electrum.requestWithRetry[...](0x1400006d760?, 0x1?)
	/Users/piotr/git/keep-network/keep-core/pkg/bitcoin/electrum/electrum.go:763 +0x80
github.com/keep-network/keep-core/pkg/bitcoin/electrum.(*Connection).keepAlive(0x1400181e360)
	/Users/piotr/git/keep-network/keep-core/pkg/bitcoin/electrum/electrum.go:706 +0xa4
created by github.com/keep-network/keep-core/pkg/bitcoin/electrum.Connect
	/Users/piotr/git/keep-network/keep-core/pkg/bitcoin/electrum/electrum.go:74 +0x264