gateway

• http://localhost:8001/ipfs/relay-node

make relay host

Notify the listening node of relay host

ipfs swarm connect <relay host address>

• http://localhost:8001/ipfs/connect-to-local-ipfs

request

{
    "relay_host": "relay host address",
    "dial_id": "listening node peer id"
}

1. Result

Okay, no connection from h1 to h3:  no addresses
Just as we suspected
end