Update comments to reference final rfc6886.
I read through rfc6886 and compared it to the implementation. The
implementation still seems good.
Jack Palevich
5 years ago
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NAT-PMP is supported by Apple brand routers and open source routers like Tomato and DD-WRT.
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See http://tools.ietf.org/html/draft-cheshire-nat-pmp-03
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See https://tools.ietf.org/rfc/rfc6886.txt
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[](https://travis-ci.org/jackpal/go-nat-pmp)
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// Implement the NAT-PMP protocol, typically supported by Apple routers and open source
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// routers such as DD-WRT and Tomato.
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//
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// See http://tools.ietf.org/html/draft-cheshire-nat-pmp-03
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// See https://tools.ietf.org/rfc/rfc6886.txt
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//
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// Usage:
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//
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// client := natpmp.NewClient(gatewayIP)
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// response, err := client.GetExternalAddress()
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// The recommended mapping lifetime for AddPortMapping
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// The recommended mapping lifetime for AddPortMapping.
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const RECOMMENDED_MAPPING_LIFETIME_SECONDS = 3600
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// Interface used to make remote procedure calls.
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msg := make([]byte, 12)
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msg[0] = 0 // Version 0
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msg[1] = opcode
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// [2:3] is reserved.
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writeNetworkOrderUint16(msg[4:6], uint16(internalPort))
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writeNetworkOrderUint16(msg[6:8], uint16(requestedExternalPort))
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writeNetworkOrderUint32(msg[8:12], uint32(lifetime))
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