Call sends RPC request to server.

Input JSON string examples for getblock method as following: {"jsonrpc": "2.0", "method": "getblock", "params": [1], "id": 0} {"jsonrpc": "2.0", "method": "getblock", "params": ["aabbcc.."], "id": 0}.

A JSON example for getblockhash method as following: {"jsonrpc": "2.0", "method": "getblockhash", "params": [1], "id": 0}.

A JSON example for getrawtransaction method as following: {"jsonrpc": "2.0", "method": "getrawtransaction", "params": ["transactioin hash in hex"], "id": 0}.

{"jsonrpc": "2.0", "method": "getstorage", "params": ["code hash", "key"], "id": 0}.

this is the function that should be called in order to answer an rpc call should be registered like "http.HandleFunc("/", httpjsonrpc.Handle)".

a function to register functions to be called for specific rpc calls.

A JSON example for sendrawtransaction method as following: {"jsonrpc": "2.0", "method": "sendrawtransaction", "params": ["raw transactioin in hex"], "id": 0}.

a function to be called if the request is not a HTTP JSON RPC call.

multiplexer that keeps track of every function to be called on specific rpc call.