Answer by Yuming for udp hole punch and port restricted cone NAT，
in the golang Only net.ListenUDP() 's UDPConn can use the method WriteToUDP（） net.DialUDP 's UDPConn can't // Sorry my English is very poor。 I think maybe nobody can read this。 囧TZ
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udp hole punch and port restricted cone NAT，
I would like to understand how udp hole punching works when two hosts each behind the port restricted cone NAT establish connection. As I understood, it happens in several stages and involves three...
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