GRPC port forwarding still has issues

[jandubois]

I haven't reproduced this myself, but I saw abiosoft/colima#1376

Every once in a while when I restart docker containers docker compose down -v && docker compose build && docker compose up -d && docker compose logs -f, they run, they can communicate inside the containers, but I try and access any of the services via their ports and it hangs. The only current fix I seem to have found is just colima restart

This is using Lima 1.2.1 and their "fix" was to switch back to SSH port forwarding, which made the problem disappear, so the downstream issue was closed.

[balajiv113]

I will look into this. We already made our implementation better with the proxy logic.

Not sure where its going down now. From the host attached logs i don't see any issue. Need to check on guest mostly

[balajiv113]

Wasn't able to replicate this issue. Am exploring if we can find a better and stable solution to this throughout

[norio-nomura]

By using SSH over AF_VSOCK #3979 , SSH port forwarding becomes faster than GRPC forwarding.

GRPC Port Forwarder (Current):

[ 5] 0.00-9.98 sec 3.47 GBytes 2.98 Gbits/sec receiver

SSH Port Forwarder on gvisor's virtual network (Old):

[ 5] 0.00-10.03 sec 2.74 GBytes 2.34 Gbits/sec receiver

SSH Port Forwarder over AF_VSOCK (New):

[ 5] 0.00-10.00 sec 4.16 GBytes 3.57 Gbits/sec receiver

[balajiv113]

But SSH port forwarding doesn't support UDP forwarding

[norio-nomura]

I may want a function that allows to specify the backend of port forwarding only for UDP or for each rule.

[balajiv113]

No ssh doesn't support udp forwarding that's the core issue. That's the reason for a separate port forwarding

[anthonyjohngarcia]

I was one of the ones affected by the issue. It seems like it happens only when I view video files through this flow: Mobile Device -> Nginx Proxy Manager -> Apache Web DAV -> External Disk. If I access the video files through local network: Mobile Device -> Apache Web DAV -> External Disk then no issues occur.

I did some digging and it could be how NPM handles GRPC but I am not 100% sure about that.

EDIT: To add on Mobile Device -> Nginx Proxy Manager -> Jellyfin have no issues at all as well.