This repository is a reproduction of libp2p/rust-libp2p#5442.

• bad-peer - This accepts libp2p WebTransport connections but misbehaves on sub-stream allocation. This make libp2p-ping's ConnectionHandler to be created but then receive a ConnectionEvent::DialUpgradeError.
• isse-5442 - This is the reproduction of the issue that is defined as a WASM test case.

Terminal No1:

cd bad-peer
go build .
./bad-peer

Terminal No2:

cd issue-5442
wasm-pack test --chrome

Browse to the URL that is printed by the wasm-pack. If the output of the page is stuck on running 1 test then the bug was reproduced. You can open browser's console to view the crash.

NOTE: If you get Failed to fetch error displayed in the page, then you forgot to start bad-peer.

• Proper fix: async-rs/futures-timer#74. You can apply it by uncommenting futures-timer line in issue-5442/Cargo.toml.
• Workaround: libp2p/rust-libp2p#5447. You can apply it by uncommenting libp2p line in issue-5442/Cargo.toml.