Microsoft.Protocols.TestSuites.Rdpeudp.RdpeudpTestSuite.VerifySYNPacket C# (CSharp) Method

        private void VerifySYNPacket(RdpeudpPacket synPacket, TransportMode udpTransportMode)
        {
            if (synPacket == null)
            {
                this.Site.Assert.Fail("The SYN Packet should not be null!");
            }

            if (synPacket.fecHeader.snSourceAck != uint.MaxValue)
            {
                this.Site.Assert.Fail("The snSourceAck variable MUST be set to -1 (max value of uint)!");
            }

            if((synPacket.fecHeader.uFlags & RDPUDP_FLAG.RDPUDP_FLAG_SYN) == 0)
            {
                this.Site.Assert.Fail("The RDPUDP_FLAG_SYN flag MUST be set in SYN packet!");
            }

            if (udpTransportMode == TransportMode.Reliable)
            {
                if ((synPacket.fecHeader.uFlags & RDPUDP_FLAG.RDPUDP_FLAG_SYNLOSSY) == RDPUDP_FLAG.RDPUDP_FLAG_SYNLOSSY)
                {
                    this.Site.Assert.Fail("The RDPUDP_FLAG_SYNLOSSY flag MUST not be set when choose reliable UDP connection!");
                }
            }
            else
            {
                if ((synPacket.fecHeader.uFlags & RDPUDP_FLAG.RDPUDP_FLAG_SYNLOSSY) == 0)
                {
                    this.Site.Assert.Fail("The RDPUDP_FLAG_SYNLOSSY flag MUST be set When choose lossy UDP connection!");
                }
            }

            if (synPacket.SynData == null)
            {
                this.Site.Assert.Fail("The SYN Packet should contain a RDPUDP_SYNDATA_PAYLOAD structure!");
            }

            if (synPacket.SynData.Value.uUpStreamMtu > 1232 || synPacket.SynData.Value.uUpStreamMtu < 1132)
            {
                this.Site.Assert.Fail("The uUpStreamMtu field MUST be set to a value in the range of 1132 to 1232.");
            }

            if (synPacket.SynData.Value.uDownStreamMtu > 1232 || synPacket.SynData.Value.uDownStreamMtu < 1132)
            {
                this.Site.Assert.Fail("The uDownStreamMtu field MUST be set to a value in the range of 1132 to 1232.");
            }

            // The RDPUDP_FLAG_SYNEX flag and RDPUDP_SYNDATAEX_PAYLOAD structure should appear at the same time.
            if ((synPacket.SynDataEx == null) ^ ((synPacket.fecHeader.uFlags & RDPUDP_FLAG.RDPUDP_FLAG_SYNEX) == 0))
            {
                this.Site.Assert.Fail("Section 3.1.5.1.1: The RDPUDP_FLAG_SYNEX flag MUST be set only when the RDPUDP_SYNDATAEX_PAYLOAD structure is included. Section 3.1.5.1.1: The RDPUDP_SYNEX_PAYLOAD structure MUST be appended to the UDP datagram if the RDPUDP_FLAG_SYNEX flag is set in uFlags.");
            }

            //Section 3.1.5.1.1: Not appending RDPUDP_SYNDATAEX_PAYLOAD structure implies that RDPUDP_PROTOCOL_VERSION_1 is the highest protocol version supported.
            if (synPacket.SynDataEx == null)
            {
                this.clientUUdpVer = uUdpVer_Values.RDPUDP_PROTOCOL_VERSION_1;
                this.clientRdpudpVerfionInfoValidFlag = null;
            }
            else
            {
                this.clientUUdpVer = synPacket.SynDataEx.Value.uUdpVer;
                this.clientRdpudpVerfionInfoValidFlag = synPacket.SynDataEx.Value.uSynExFlags;

                //Section 3.1.5.1.1: The RDPUDP_VERSION_INFO_VALID flag MUST be set only if the structure contains a valid RDP-UDP protocol version.
                if (synPacket.SynDataEx.Value.uSynExFlags.HasFlag(uSynExFlags_Values.RDPUDP_VERSION_INFO_VALID) && ((int)synPacket.SynDataEx.Value.uUdpVer & 0xfffc) != 0)
                {
                    this.Site.Assert.Fail("Section 3.1.5.1.1: The RDPUDP_VERSION_INFO_VALID flag MUST be set only if the structure contains a valid RDP-UDP protocol version");
                }

            }
        }