STUN : Simple Traversal of User Datagram Protocol [UDP] Through Network Address Translators [NATs] STUN protocol (Simple Traversal of UDP through NATs) is described in the IETF RFC 3489, available at http://www.ietf.org/rfc/rfc3489.txt http://www.iet…
终于找到了一份满意的UDP打洞原理解释,附上正文,自己整理了一下源码 3.3. UDP hole punching UDP打洞技术 The third technique, and the one of primary interest in this document, is widely known as "UDP Hole Punching." UDP hole punching relies on the properties of common firewalls and c…