Connections being reset with valid requests from Python client

[rtyler]

I'm using schemathesis (just the worst name) to run OpenAPI tests against my Tide server.

A number of these tests outright fail with connection resets by the server and obtuse errors on the server side.

Easy reproduction for exactly what I'm doing would be:

• Download this openapi.yaml
• pip install schemathesis
• RUST_LOG=debug tide-serve -b localhost:8000
• ~/.local/bin/schemathesis run ./openapi.yaml -O PutObject --base-url=http://localhost:8000/ --show-errors-tracebacks

Observe numerous client-side failures such as:

requests.exceptions.ConnectionError: ('Connection aborted.', RemoteDisconnected('Remote end closed connection without response'))

Running a dummy server with python -m SimpleHTTPServer doesn't result in these connection resets however.

[yoshuawuyts]

@rtyler is the client by any chance running HTTP/1.0? -- if so, we should probably log a warning if an unsupported connection tries to connect.

[jbr]

I believe we would fail earlier if it were http/1.0

[rtyler]

Looks like the client is doing valid HTTP/1.1 requests, Could empty header values (see Authorization below) cause this problem?,

❯ nc -l 8000
PUT /0/0 HTTP/1.1
Host: localhost:8000
User-Agent: schemathesis/2.7.1
Accept-Encoding: gzip, deflate
Accept: */*
Connection: keep-alive
Authorization: 
Content-Length: 2
Content-Type: application/json