Is this lib support tcp protocol?

[vCassius]

Is this lib support tcp protocol or only http layer?

[kardeiz]

It's mostly agnostic—you can put in bytes/request and get out a serializable response. The current "integrations" (actix-web and hyper) are at the HTTP layer, but these are pretty thin wrappers around the main jsonrpc_v2::Server:

jsonrpc-v2/src/lib.rs

Line 1176 in 16ec062

pub fn into_actix_web_service(

So, it shouldn't be too much work to get it set up with a TcpStream.