define valid multiserver addresses
format is:
name = [a-z] [a-z0-9\-]+ //name may contain lower case, digits, and -. must start with lower case.
escaped = ![!:;~] //special characters !:;~ may be escaped with !
data = ["-9] | [<-}] | escaped //data field may contain any non-space character, but special characters must be escaped.
protocol = name (:data)* //a protocol is a name and zero or more data elements
address = protocol (~ protocol )* //an address is 1 or more protocols
multiaddress = address (; address )* //a multiaddress is 1 or more addresses!
net:wx.larpa.net:8008~shs:DTNmX+4SjsgZ7xyDh5xxmNtFqa6pWi5Qtw7cE8aR9TQ=
wss://wx.larpa.net~shs:DTNmX+4SjsgZ7xyDh5xxmNtFqa6pWi5Qtw7cE8aR9TQ=
Please note that both ws:// and ws: are valid multiserver addresses.
follows the pattern of level codec
parse a multiserver address
reverse of decode
returns true if string is a valid multiserver address.
if check returns false, decode will throw if called with the same input.
MIT