Function jsonrpc_core_client::transports::local::connect_with_metadata_and_middleware

pub fn connect_with_metadata_and_middleware<TClient, THandler, TMetadata, TMiddleware>(
    handler: THandler,
    meta: TMetadata
) -> (TClient, impl Future<Output = Result<(), RpcError>>)where
    TClient: From<RpcChannel>,
    TMiddleware: Middleware<TMetadata> + Unpin,
    THandler: Deref<Target = MetaIoHandler<TMetadata, TMiddleware>> + Unpin,
    TMetadata: Metadata + Unpin,

Connects to a Deref<Target = MetaIoHandler<Metadata> specifying a custom middleware implementation.