Repo to reproduce the stalling of Hyper Client

Layout of the repo

• ./cmd/h2srv => Go Http Server

• ./cmd/h2go => Go Http Client

• ./src/main.rs => Rust Http Client

What happens between client & server

A simple REST API which expects byte buffer in a body and responds back length of the buffer in a json.

Example: Send "hello" and get its length back

$ echo hello | curl -X POST -k --http2 --data-binary @- $HTEST_URL
{"Len":6}

Building

1. Generate certs first (openssl needed)

cd certs
bash ../gencert.sh

2. Build server

go build ./cmd/h2srv

3. Build go client

go build ./cmd/h2go

4. Build rust client

cargo build --release

Running

1. Running server

./h2srv

2. Running Rust Client

source test.env
./target/release/hyper-stuck

3. Running Go client

export GODEBUG=x509ignoreCN=0
./h2go

Params for the hyper client

The are in the file test.env. They are:

# The URL to connect to
export HTEST_URL=https://127.0.0.1:9001/put

# The number outstanding requests. 1 future => 1 request
export HTEST_FUT_LIMIT=400

# Number of requests to be made
export HTEST_REQ_COUNT=100000

# Size of the buffer sent in each request (below is 256KB)
export HTEST_BUF_SIZE=$((256*1024))

# Number of connections. In hyper, this will create as many hyper::client::Client instances
export HTEST_CONN_COUNT=1