Creates a new socket connection to the host and port and returns a Future that will complete with either a Socket once connected or an error if the host-lookup or connection failed.
host can either be a String or an InternetAddress. If host is a
String, connect will perform a InternetAddress.lookup and try
all returned InternetAddresses, until connected. Unless a
connection was established, the error from the first failing connection is
returned.
The argument sourceAddress can be used to specify the local
address to bind when making the connection. sourceAddress can either
be a String or an InternetAddress. If a String is passed it must
hold a numeric IP address.
Source
external static Future<Socket> connect(host, int port, {sourceAddress});