Error "Prematurely before response header is sent" when using netcat to send http request

[CodyPubNub]

Describe the bug

This error is being returned instead of successfully reverse proxying when using netcat instead of curl

Pingora info

Latest commit on main, using pingora-proxy/examples/load_balancer.rs example

Steps to reproduce

# run load balancer example of the pingora-proxy
cargo run --example load_balancer

# send http request using netcat
echo -e "GET / HTTP/1.1\r\nHost: one.one.one.one\r\n\r\n" | nc 127.0.0.1 6188

Expected results

This very same netcat command works when sending requests to nginx. I was hoping Pingora would do the same.

curl http://127.0.0.1:6188 -v -H 'host: one.one.one.one'
*   Trying 127.0.0.1:6188...
* Connected to 127.0.0.1 (127.0.0.1) port 6188
> GET / HTTP/1.1
> Host: one.one.one.one
> User-Agent: curl/8.6.0
> Accept: */*
>
< HTTP/1.1 200 OK

Observed results

No response received, and pingora encounters an error while proxying:

[2024-06-24T22:55:46Z ERROR pingora_proxy] Fail to proxy: Downstream ConnectionClosed context: Peer: addr: 1.1.1.1:443, scheme: HTTPS,sni: one.one.one.one, cause:  context: Prematurely before response header is sent, status: 0, tries: 1, retry: false, GET /, Host: one.one.one.one

Additional context

I've attached tcpdump of both curl and netcat during this testing tcpdump_curl.txt tcpdump_netcat.txt

[eaufavor]

Related discussion https://github.com/httpwg/http-core/issues/22