Azure Authz - HTTP Timeout with context deadline exceeded (Client.Timeout exceeded while awaiting headers)

[julienstroheker]

At random time, we do see Guard with the following error in the logs : HTTP Timeout with context deadline exceeded (Client.Timeout exceeded while awaiting headers).

The pattern identified is that all connections are failing for a period of ~12 to 17 min and starting to work again after that period.

It looks very similar to the following error we identified in Azure Golang SDK : Azure/azure-sdk-for-go#21346

I would like to raise a PR to enable HTTP/2 ping transport in the http.Client used by Guard. This will enforce the golang transport to do a HTTP/2 Ping every X amount of time and decide to either close or keep alive the connections in the pool.