dex/testing: Update walletpair

[martonp]

This adds a simnet option to the wallet pair which runs both dex clients on simnet and puts the appdata in a separate folder. Also, both of the dex clients now run an rpc server, and dexcctl scripts for each client are added to the harness-ctl folder.

[ukane-philemon]

Looks good.

It seems 127.0.0.4 & 127.0.0.5 are unassignable on my end. I'm lazy to dig why but any reason why we are not using 127.0.0.1?

2023-12-27 00:37:37.521 [ERR] DEXC: Error starting rpc server: connect failure: can't listen on 127.0.0.5:5763. rpc server quitting: listen tcp 127.0.0.5:5763: bind: can't assign requested address

[martonp]

@ukane-philemon Are you using mac? https://superuser.com/questions/458875/how-do-you-get-loopback-addresses-other-than-127-0-0-1-to-work-on-os-x

I'm not sure why we use them either though. I think we could just 127.0.0.1 and different ports.

[ukane-philemon]

@ukane-philemon Are you using mac? https://superuser.com/questions/458875/how-do-you-get-loopback-addresses-other-than-127-0-0-1-to-work-on-os-x

I'm not sure why we use them either though. I think we could just 127.0.0.1 and different ports.

Yes. I always have to specify webaddr when running dexc from cli.

[ukane-philemon]

Thanks for the link. I never needed to use any local address other than 127.0.0.1 and running a script to set alias each time can be a pita.

[buck54321]

@ukane-philemon Are you using mac? https://superuser.com/questions/458875/how-do-you-get-loopback-addresses-other-than-127-0-0-1-to-work-on-os-x

I'm not sure why we use them either though. I think we could just 127.0.0.1 and different ports.

Please don't do this. Cookies are based on IP alone without port. I use dexc on mainnet, and this will screw up my cookies.

See my the solution at #2647 (comment) for a hint for fixing this on Mac.

[ukane-philemon]

See my the solution at #2647 (comment) for a hint for fixing this on Mac.

Okay. Just hoping I won’t have to set aliases every time 😅.

[martonp]

Please don't do this. Cookies are based on IP alone without port. I use dexc on mainnet, and this will screw up my cookies.

I've updated the IPs on the simnet wallet pair as well.

[JoeGruffins]

Unable to use dexc1ctl:

$ ./dexc1ctl help
unable to send request: Post "https://127.0.0.4:5761": tls: failed to verify certificate: x509: certificate is valid for 127.0.0.1, ::1, 192.168.1.62, 127.0.0.2, 127.0.0.3, not 127.0.0.4

Can you add that we can use the --simnet flag to the README. Or am I supposed to run it SIMNET=1 ./walletpair.sh?