public void FullTestIPv4()
        {
            byte[] expected = new byte[] {
                0x01, 0x01, 0x00, 0x0C, 0x21, 0x12, 0xA4, 0x42,
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                0x08, 0x09, 0x0A, 0x0B, 0x00, 0x20, 0x00, 0x08,
                0x00, 0x01, 0xFC, 0xC7, 0x20, 0x10, 0xA7, 0x46
            };

            IPAddress usedAddress = IPAddress.Parse("1.2.3.4");
            ushort    usedPort    = 56789;

            var msg = new STUNMessageBuilder(new byte[128],
                                             STUNClass.Success, STUNMethod.Binding,
                                             new Transaction(new byte[12] {
                0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
            }));

            msg.WriteAttribute(new STUNAttr_XORMappedAddress(usedAddress, 56789));
            var stunReq = msg.Build();

            CollectionAssert.AreEqual(expected, stunReq.ToArray());

            var attrs  = new List <STUNAttr>();
            var parser = new STUNMessageParser(stunReq, attrs);

            Assert.IsTrue(parser.isValid);

            STUNAttr_XORMappedAddress parsedAddr = new STUNAttr_XORMappedAddress();

            parsedAddr.ReadFromBuffer(attrs[0]);
            Assert.AreEqual(usedPort, parsedAddr.port, "Parser can't read the port correctly");
            Assert.IsTrue(parsedAddr.isIPv4());
            Assert.AreEqual(usedAddress, parsedAddr.ip.ToIPAddress(), "Parser can't read the address correctly");
        }
        public void FullTestIPv6()
        {
            // WRONG: regenerate
            byte[] expected = new byte[] {
                0x01, 0x01, 0x00, 0x18, 0x21, 0x12, 0xA4, 0x42,
                0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                0x08, 0x09, 0x0A, 0x0B, 0x00, 0x20, 0x00, 0x14,
                0x00, 0x02, 0xFC, 0xC7, 0x01, 0x13, 0xA9, 0xFA,
                0x85, 0xA2, 0x02, 0x03, 0x04, 0x05, 0x8C, 0x29,
                0x0B, 0x79, 0x79, 0x3F
            };

            IPAddress usedAddress = IPAddress.Parse("[2001:0db8:85a3:0000:0000:8a2e:0370:7334]");
            ushort    usedPort    = 56789;

            var msg = new STUNMessageBuilder(new byte[128],
                                             STUNClass.Success, STUNMethod.Binding,
                                             new Transaction(new byte[12] {
                0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
            }));

            msg.WriteAttribute(new STUNAttr_XORMappedAddress(usedAddress, 56789));
            var stunReq = msg.Build();

            CollectionAssert.AreEqual(expected, stunReq.ToArray());

            var attrs  = new List <STUNAttr>();
            var parser = new STUNMessageParser(stunReq, attrs);

            Assert.IsTrue(parser.valid);

            STUNAttr_XORMappedAddress parsedAddr = new STUNAttr_XORMappedAddress();

            parsedAddr.ReadFromBuffer(attrs[0]);
            Assert.AreEqual(usedPort, parsedAddr.port, "Parser can't read the address correctly");
            Assert.IsFalse(parsedAddr.isIPv4());
            Assert.AreEqual(usedAddress, parsedAddr.ipv6.ToIPAddress(), "Parser can't read the port correctly");
        }