p2p/nat.go


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package p2p

import (
    "fmt"
    "net"
)

func ParseNAT(natType string, gateway string) (nat NAT, err error) {
    switch natType {
    case "UPNP":
        nat = UPNP()
    case "PMP":
        ip := net.ParseIP(gateway)
        if ip == nil {
            return nil, fmt.Errorf("cannot resolve PMP gateway IP %s", gateway)
        }
        nat = PMP(ip)
    case "":
    default:
        return nil, fmt.Errorf("unrecognised NAT type '%s'", natType)
    }
    return
}