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Ethernet : Client class
Connects to a specified IP address and port. The return value indicates success or failure. Also supports DNS lookups when using a domain name.
client.connect(ip, port)
client.connect(URL, port)
ip: the IP address that the client will connect to (array of 4 bytes)
URL: the domain name the client will connect to (string, ex.:"arduino.cc")
port: the port that the client will connect to (int)
Returns true if the connection succeeds, false if not.
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