Content-Type: application/json
## JSON-RPC over HTTPS POST
curl https://rbc-rpc.com \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"web3_clientVersion","params": [],"id":1}'
## JSON-RPC over WSS
wscat -c ws://rbc-rpc.com
>{"jsonrpc":"2.0","method":"web3_clientVersion","params": [],"id":1}
{
"jsonrpc": "2.0",
"id": 1,
"result": "Geth/v1.8.15-omnibus-255989da/linux-amd64/go1.10.1"
}