Description: Because of the current IPV4 address the lack of, nat firewall intermediary device and asymmetric the addressable set up peer-to-peer communication mechanism causing the address access issues. In the the internet initial architecture, each node has a unique ip address in the world, able to communicate directly. However, with the increase in the node, ip address using the tension, they need an intermediary device such as nat together.
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UDPServer.java
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