Panic during eventsocket reconnect testing

[iProdigy]

Was testing my eventsub websocket reconnect implementation and randomly encountered this panic from the cli (but subsequent testing hasn't reproduced the error):

panic: runtime error: slice bounds out of range [1:0]

goroutine 38 [running]:
github.com/twitchdev/twitch-cli/internal/events/mock_wss_server.onCloseConnection(0x0?, 0xc0001a40f0?)
        /go/src/github.com/twitchdev/twitch-cli/internal/events/mock_wss_server/server.go:243 +0x1ac
github.com/twitchdev/twitch-cli/internal/events/mock_wss_server.eventsubHandle.func4()
        /go/src/github.com/twitchdev/twitch-cli/internal/events/mock_wss_server/server.go:193 +0x208
created by github.com/twitchdev/twitch-cli/internal/events/mock_wss_server.eventsubHandle
        /go/src/github.com/twitchdev/twitch-cli/internal/events/mock_wss_server/server.go:175 +0x838

twitch-cli/internal/events/mock_wss_server/server.go

Line 243 in 8155aad

wsSrv.connections = append(wsSrv.connections[:c], wsSrv.connections[c+1:]...)

 

The other strange thing in the logs is Disconnected websocket repeats multiple times for the same websocket id:

2023/02/05 18:42:00 Starting mock EventSub WebSocket servers on ws://localhost:8080/eventsub (alternate on port 8081)
2023/02/05 18:42:00 `Ctrl + C` to exit mock servers.
2023/02/05 18:42:00 Started alternate EventSub websocket server on port 8081. This one is used for reconnect testing.
2023/02/05 18:42:00 Mock EventSub websocket server started on port 8080
2023/02/05 18:42:20 First client connected; Reconnect testing enabled. Notices will be sent in 30 seconds.
2023/02/05 18:42:20 [Server 0] Connections: (1) [ 93413566-cd0a-5e19-5c22-56b504cc7757 ]
2023/02/05 18:42:50 Terminating server 0 with reconnect notice. Disallowing connections in 30 seconds.
2023/02/05 18:42:50 Server "not accepting connections" status: [Server 0: true, Server 1: false]
2023/02/05 18:42:50 Sent reconnect notice to 93413566-cd0a-5e19-5c22-56b504cc7757
2023/02/05 18:42:50 Reconnect notices sent for server 0
2023/02/05 18:42:50 Use this new URL for connections: ws://localhost:8081/eventsub
2023/02/05 18:42:50 [Server 1] Connections: (1) [ a99cdcd3-d8b1-400b-d3b8-e0adac38de4c ]
2023/02/05 18:42:50 read: websocket: close 1000 (normal)
2023/02/05 18:42:50 Disconnected websocket 93413566-cd0a-5e19-5c22-56b504cc7757
2023/02/05 18:42:50 [Server 0] Connections: (0) [  ]
2023/02/05 18:42:50 Disconnected websocket 93413566-cd0a-5e19-5c22-56b504cc7757
2023/02/05 18:42:50 Disconnected websocket 93413566-cd0a-5e19-5c22-56b504cc7757