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Support HTTP/2 on devtunnels.ms #263
Description
I started a gRPC server on ASP.NET Core and then tried to access it from a client through Dev Tunnels.
The client throws the following exception:
Grpc.Core.RpcException: 'Status(StatusCode="Internal", Detail="Error starting gRPC call. HttpRequestException: Requesting HTTP version 2.0 with version policy RequestVersionOrHigher while unable to establish HTTP/2 connection.", DebugException="System.Net.Http.HttpRequestException: Requesting HTTP version 2.0 with version policy RequestVersionOrHigher while unable to establish HTTP/2 connection.")'
The tunnel appears to downgrade HTTP requests, is it not compatible with HTTP/2?
Activity
derekbekoe commentedon Jun 26, 2023
We do not currently support HTTP/2 via
*devtunnels.ms. However, this should be possible via thedevtunnel connect TUNNELIDcommand documented on this page - https://learn.microsoft.com/en-us/azure/developer/dev-tunnels/cli-commands. With this, the client can connect to your grpc server vialocalhost:PORT.I've marked this as a feature request for support HTTP/2 on
*.devtunnels.msbut let us know if the above works.mayuki commentedon Jun 27, 2023
Thanks. I confirmed the connection with the client using devtunnel-cli and gRPC (HTTP/2).
I look forward to supporting HTTP/2 on
*.devtunnels.ms.[-]Is Dev Tunnels compatible with gRPC or HTTP/2?[/-][+]Support HTTP/2 on *.devtunnels.ms[/+][-]Support HTTP/2 on *.devtunnels.ms[/-][+]Support HTTP/2 on *devtunnels.ms[/+][-]Support HTTP/2 on *devtunnels.ms[/-][+]Support HTTP/2 on devtunnels.ms[/+]derekbekoe commentedon Feb 26, 2024
At this point, HTTP/2 on *.devtunnels.ms is not planned. Given this, I'll be closing this issue and if we are able to add this in the future, we'll re-open. However, thanks for your feature request for this.