Fly Proxy H/2 Details

Questions / Help
1

Do you all have additional documentation about the fly-proxy beyond what’s on Public Network Services?

I’m writing an application that uses HTTP 2 but I’m writing it at the frame level instead of using an H/2 library because I need to control the order of frames across streams. So my main question is whether the fly-proxy will inject additional frames (e.g. flow control, priority, ping, etc) or if it mostly just acts as a passthrough? I see that it can inject headers if I’m using the http handler and that’s fine.

2

It’s definitely not passthrough if you have the http handler.

If you want to pass through http/2, you can enable only the tls handler and use the following port definition:

[[services.ports]]
handlers = ["tls"]
port = "443"
tls_options = { alpn = ["h2", "http/1.1"] }

Or just h2 in the list of alpn.

Then your app will need to understand http/2 over plaintext.

2 Likes
3

Awesome! The tls handler is what I’m looking for then. I have h2c implemented right now so it should hopefully plug right in. :tada: