High latency client can crash the bridge about hc

[bwdezend]

More specifically - when my iOS device leaves the WiFi network and rejoins, it appears the encrypted session is not properly re-neogtiated and left open. I can easily reproduce this by:

1: Checking the state of a device on my bridge
2: Turning WiFi off on my iOS device
3: Checking the state (which is now Unreachable)
4: Turning WiFi back on
5: Checking the state a 3rd time.

[brutella]

HomeKit on iOS leaves the TCP connection open as long as possible. When the connection is left open and not closed, the next read on the socket fails. The library then closes the connection and prints out the error to the console. The server is NOT dead at this point and still waits for new connections.

It seems to me an iOS bug when the connection is left open when the device leaves the network. I don't know how to fix that on the server side. Any ideas?

[bwdezend]

The iOS client takes a long time to renegotiate a connection after one of these idle connection timeouts occur. After testing this weekend, it will eventually reconnect, but it often takes 10+ attempts over 30 or 45 minutes to be able to re-establish. I agree this smells like an iOS bug.

Stopping and restarting the server seems to be the only way I can ensure a quick restoration of services. I'll keep looking and see if I can find a way to mitigate this timeout.

[mxlje]

@bwdezend I am seeing the same behavior, but even after restarting the accessory (I am experimenting with https://github.com/brutella/hklight), I can’t get my phone to reconnect. Do you have any new information on this?

I’m still relatively new to HomeKit and hc, but I really like the prospects of creating my own "devices" in Go.

[bwdezend]

I had to suspend work on HomeKit hacking due to time constraints. Sadly, I have nothing new to share. There's also a chance that iOS9 has yet again changed things.

[mxlje]

Ok, thanks for the quick reply. Yes, could very well be the case, that HomeKit is kinda buggy with iOS9.

[kevinduterne]

Is this also causing the connection to become "not reachable" after any connection loss of the IOS device? 5 to 10 min after adding the Homekit bridge it will become unavailable in the Home app..
On the server I am seeing :
[INFO] Close connection and remove session
Then i have to repair before I can use it again..
Is there anything to do about this?

[brutella]

@kevinduterne This should already be fixed. Please get the latest changes from the master branch and try it again.

[kevinduterne]

Correct, get fixed the issue! Thx

[brutella]

Is this still an issue?

[kevinduterne]

No It has been resolved

[bwdezend]

With current code from master, I can also confirm that this is no longer an issue with iOS 9.3.1.

[brutella]

Thanks