Application crashes if the chain is stopped

[andynog]

Describe the bug

The tui crashes if you stop the chain that is listening to.

To Reproduce
Steps to reproduce the behavior:

• Start a chain in a terminal windown e.g. $ gaiad start
• On another terminal run the tool $ gex
• Go back to the terminal that was running the chain and stop it
• The tui will show the error below

panic: Get "http://localhost:26657/heal": dial tcp [::1]:26657: connect: connection refused
go routine 55 [running]:
...

Expected behavior

Probably in the routine listening on the port, some error handling could gracefully exit the tool or if possible (maybe more complex), show an error in the Health widget.

Screenshot

[toschdev]

@andynog Mind to try this branch #6
Would be great to get your feedback on this

[andynog]

OK @Tosch110 I will give it a try later today. Thanks!

[andynog]

Seems to be working now. When I stop the chain doesn't crash anymore just show a red dot, if I start the chain again it can re-connect which is nice. The only thing is that the dashboard lines seems to be a little bit out of order (see image). This is running from a terminal on a Linux machine (Fedora) not sure if it matters but just providing some context.

[toschdev]

Thanks, I will try to replicate and find a solution.

[toschdev]

I'll still merge it, I cannot find a solution as it is without major rewrite. Having a bit dizzy layout, you probably want to restart. Better than a terminal in a bad state