When setup as proxy failing in Docker mode but not standalone

[swebb99uk]

Hi,

I have a standalone wiremock with an extension that I am able to setup with stubs to act as a proxy for specific https requests, it forwards them on to the real server and uses my extension to modify the response using regex changes. This all works and my browser gets the responses and is happy.

When I run the same logic in wiremock docker the browser marks the request as failed but swagger shows a 200 response being returned with the body I expect. I then used curl to confirm everything was as expected however it fails as well with the following reason. I'm at a loss to know why this is happening only when running in docker. Any idea's ?

I am running using the following command:

docker run -it --rm -p 18443:8443 webby/wiremock --https-port 8443 --disable-gzip=true --extensions com.mystuff.BodyTransformer

• Connection state changed (MAX_CONCURRENT_STREAMS == 128)!
• http2 error: Invalid HTTP header field was received: frame type: 1, stream: 1, name: [transfer-encoding], value: [chunked]
• HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR (err 1)
• stopped the pause stream!
• Connection #0 to host localhost left intact curl: (92) HTTP/2 stream 0 was not closed cleanly: PROTOCOL_ERROR (err 1)
• Closing connection 0

[swebb99uk]

Hi,

I've figured out the problem (not sure why docker causes it mind, maybe the server version being run). Basically http2 doesn't handle encoding of chunked. So in the stub i specified the accepted encoding in the request a Gzip and in my transform i deal with unzipping and zipping up of the body of the response as well as regex on the contends. Thats worked around the problem.

Thanks Steve