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server/vendor/github.com/pion/ice/v2/addr.go

@@ -0,0 +1,71 @@
+// SPDX-FileCopyrightText: 2023 The Pion community <https://pion.ly>
+// SPDX-License-Identifier: MIT
+
+package ice
+
+import (
+	"net"
+)
+
+func parseMulticastAnswerAddr(in net.Addr) (net.IP, bool) {
+	switch addr := in.(type) {
+	case *net.IPAddr:
+		return addr.IP, true
+	case *net.UDPAddr:
+		return addr.IP, true
+	case *net.TCPAddr:
+		return addr.IP, true
+	}
+	return nil, false
+}
+
+func parseAddr(in net.Addr) (net.IP, int, NetworkType, bool) {
+	switch addr := in.(type) {
+	case *net.UDPAddr:
+		return addr.IP, addr.Port, NetworkTypeUDP4, true
+	case *net.TCPAddr:
+		return addr.IP, addr.Port, NetworkTypeTCP4, true
+	}
+	return nil, 0, 0, false
+}
+
+func createAddr(network NetworkType, ip net.IP, port int) net.Addr {
+	switch {
+	case network.IsTCP():
+		return &net.TCPAddr{IP: ip, Port: port}
+	default:
+		return &net.UDPAddr{IP: ip, Port: port}
+	}
+}
+
+func addrEqual(a, b net.Addr) bool {
+	aIP, aPort, aType, aOk := parseAddr(a)
+	if !aOk {
+		return false
+	}
+
+	bIP, bPort, bType, bOk := parseAddr(b)
+	if !bOk {
+		return false
+	}
+
+	return aType == bType && aIP.Equal(bIP) && aPort == bPort
+}
+
+// AddrPort is  an IP and a port number.
+type AddrPort [18]byte
+
+func toAddrPort(addr net.Addr) AddrPort {
+	var ap AddrPort
+	switch addr := addr.(type) {
+	case *net.UDPAddr:
+		copy(ap[:16], addr.IP.To16())
+		ap[16] = uint8(addr.Port >> 8)
+		ap[17] = uint8(addr.Port)
+	case *net.TCPAddr:
+		copy(ap[:16], addr.IP.To16())
+		ap[16] = uint8(addr.Port >> 8)
+		ap[17] = uint8(addr.Port)
+	}
+	return ap
+}