/// <summary>
/// Establish a UDP connection
/// </summary>
/// <param name="udpTransportMode">Transport mode: Reliable or Lossy</param>
/// <param name="timeout">wait time</param>
/// <returns>The accepted socket</returns>
private void EstablishUDPConnection(TransportMode udpTransportMode, TimeSpan timeout)
{
//Start UDP listening
if (rdpeudpServer == null)
rdpeudpServer = new RdpeudpServer((IPEndPoint)this.rdpbcgrAdapter.SessionContext.LocalIdentity, true);
if (!rdpeudpServer.Running)
rdpeudpServer.Start();
//Send a Server Initiate Multitransport Request PDU
byte[] securityCookie = new byte[16];
Random rnd = new Random();
rnd.NextBytes(securityCookie);
Multitransport_Protocol_value requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECR;
if (udpTransportMode == TransportMode.Lossy)
{
requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECL;
}
this.rdpbcgrAdapter.SendServerInitiateMultitransportRequestPDU(++this.multitransportRequestId, requestedProtocol, securityCookie);
this.requestIdList.Add(this.multitransportRequestId);
this.securityCookieList.Add(securityCookie);
//create a UDP socket
RdpeudpSocket rdpudpSocket = rdpeudpServer.Accept(((IPEndPoint)this.rdpbcgrAdapter.SessionContext.Identity).Address, udpTransportMode, timeout);
if (udpTransportMode == TransportMode.Reliable)
{
this.rdpeudpSocketR = rdpudpSocket;
}
else
{
this.rdpeudpSocketL = rdpudpSocket;
}
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="mode">Reliable or Lossy.</param>
/// <param name="remoteEp">Remote endpoint.</param>
/// <param name="autoHandle">Auto Handle or not.</param>
/// <param name="sender">Sender Used to send packet</param>
/// <param name="rdpeudpServer">RDPEUDP Server</param>
public RdpeudpServerSocket(TransportMode mode, IPEndPoint remoteEp, bool autohandle, RdpeudpSocketSender sender, RdpeudpServer rdpeudpServer)
: base(mode, remoteEp, autohandle, sender)
{
this.rdpeudpServer = rdpeudpServer;
}
/// <summary>
/// Establish a UDP connection.
/// </summary>
/// <param name="udpTransportMode">Transport mode: Reliable or Lossy.</param>
/// <param name="timeout">Wait time.</param>
/// <param name="verifyPacket">Whether verify the received packet.</param>
/// <returns>The accepted socket.</returns>
private RdpeudpSocket EstablishUDPConnection(TransportMode udpTransportMode, TimeSpan timeout, bool verifyPacket = false, bool autoHanlde = false)
{
// Start UDP listening.
if(rdpeudpServer == null)
rdpeudpServer = new RdpeudpServer((IPEndPoint)this.rdpbcgrAdapter.SessionContext.LocalIdentity, autoHanlde);
if(!rdpeudpServer.Running)
rdpeudpServer.Start();
// Send a Server Initiate Multitransport Request PDU.
byte[] securityCookie = new byte[16];
Random rnd = new Random();
rnd.NextBytes(securityCookie);
Multitransport_Protocol_value requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECR;
if (udpTransportMode == TransportMode.Lossy)
{
requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECL;
}
this.rdpbcgrAdapter.SendServerInitiateMultitransportRequestPDU(++this.multitransportRequestId, requestedProtocol, securityCookie);
// Create a UDP socket.
RdpeudpServerSocket rdpudpSocket = rdpeudpServer.CreateSocket(((IPEndPoint)this.rdpbcgrAdapter.SessionContext.Identity).Address, udpTransportMode, timeout);
if (rdpudpSocket == null)
{
this.Site.Assert.Fail("Failed to create a UDP socket for the Client : {0}", ((IPEndPoint)this.rdpbcgrAdapter.SessionContext.Identity).Address);
}
if (udpTransportMode == TransportMode.Reliable)
{
this.rdpeudpSocketR = rdpudpSocket;
}
else
{
this.rdpeudpSocketL = rdpudpSocket;
}
// Expect a SYN packet.
RdpeudpPacket synPacket = rdpudpSocket.ExpectSynPacket(timeout);
if (synPacket == null)
{
this.Site.Assert.Fail("Time out when waiting for the SYN packet");
}
// Verify the SYN packet.
if (verifyPacket)
{
VerifySYNPacket(synPacket, udpTransportMode);
}
// Send a SYN and ACK packet.
SendSynAndAckPacket(udpTransportMode, SynAndAck_InvalidType.None, initSequenceNumber);
// Expect an ACK packet or ACK and Source Packet.
RdpeudpPacket ackPacket = rdpudpSocket.ExpectACKPacket(timeout);
if (ackPacket == null)
{
this.Site.Assert.Fail("Time out when waiting for the ACK packet to response the ACK and SYN packet");
}
// Verify the ACK packet.
if (verifyPacket)
{
VerifyACKPacket(ackPacket);
}
// If the packet is an ACK and Source Packet, add the source packet to the un-processed packet.
if (ackPacket.fecHeader.uFlags.HasFlag(RDPUDP_FLAG.RDPUDP_FLAG_DATA))
{
byte[] bytes = PduMarshaler.Marshal(ackPacket, false);
RdpeudpBasePacket stackpacket = new RdpeudpBasePacket(bytes);
rdpudpSocket.ReceivePacket(stackpacket);
}
rdpudpSocket.Connected = true;
return rdpudpSocket;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="mode">Reliable or Lossy.</param>
/// <param name="remoteEp">Remote endpoint.</param>
/// <param name="autoHandle">Auto Handle or not.</param>
/// <param name="sender">Sender Used to send packet</param>
/// <param name="rdpeudpServer">RDPEUDP Server</param>
public RdpeudpServerSocket(TransportMode mode, IPEndPoint remoteEp, bool autohandle, RdpeudpSocketSender sender, RdpeudpServer rdpeudpServer)
: base(mode, remoteEp, autohandle, sender)
{
this.rdpeudpServer = rdpeudpServer;
}
/// <summary>
/// Only on RDPEUDP Server can exist
/// </summary>
/// <param name="context"></param>
private void CreateRdpeudpServer(RdpbcgrServerSessionContext context)
{
if (rdpeudpServer == null)
{
rdpeudpServer = new RdpeudpServer((IPEndPoint)context.LocalIdentity);
}
if(!rdpeudpServer.Running)
rdpeudpServer.Start();
}
/// <summary>
/// Only on RDPEUDP Server can exist
/// </summary>
/// <param name="context"></param>
private static void CreateRdpeudpServer(RdpbcgrServerSessionContext context)
{
if (rdpeudpServer == null)
{
lock (rdpeudpServerLock)
{
if (rdpeudpServer == null)
{
rdpeudpServer = new RdpeudpServer((IPEndPoint)context.LocalIdentity);
rdpeudpServer.Start();
}
}
}
}
/// <summary>
/// Establish a UDP connection.
/// </summary>
/// <param name="udpTransportMode">Transport mode: Reliable or Lossy.</param>
/// <param name="timeout">Wait time.</param>
/// <param name="verifyPacket">Whether verify the received packet.</param>
/// <returns>The accepted socket.</returns>
private RdpeudpSocket EstablishUDPConnection(TransportMode udpTransportMode, TimeSpan timeout, bool verifyPacket = false, bool autoHanlde = false, uUdpVer_Values? uUdpVer =null)
{
// Start UDP listening.
if(rdpeudpServer == null)
rdpeudpServer = new RdpeudpServer((IPEndPoint)this.rdpbcgrAdapter.SessionContext.LocalIdentity, autoHanlde);
if(!rdpeudpServer.Running)
rdpeudpServer.Start();
// Send a Server Initiate Multitransport Request PDU.
byte[] securityCookie = new byte[16];
Random rnd = new Random();
rnd.NextBytes(securityCookie);
Multitransport_Protocol_value requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECR;
if (udpTransportMode == TransportMode.Lossy)
{
requestedProtocol = Multitransport_Protocol_value.INITITATE_REQUEST_PROTOCOL_UDPFECL;
}
this.rdpbcgrAdapter.SendServerInitiateMultitransportRequestPDU(++this.multitransportRequestId, requestedProtocol, securityCookie);
// Create a UDP socket.
RdpeudpServerSocket rdpudpSocket = rdpeudpServer.CreateSocket(((IPEndPoint)this.rdpbcgrAdapter.SessionContext.Identity).Address, udpTransportMode, timeout);
if (rdpudpSocket == null)
{
this.Site.Assert.Fail("Failed to create a UDP socket for the Client : {0}", ((IPEndPoint)this.rdpbcgrAdapter.SessionContext.Identity).Address);
}
if (udpTransportMode == TransportMode.Reliable)
{
this.rdpeudpSocketR = rdpudpSocket;
}
else
{
this.rdpeudpSocketL = rdpudpSocket;
}
// Expect a SYN packet.
RdpeudpPacket synPacket = rdpudpSocket.ExpectSynPacket(timeout);
if (synPacket == null)
{
this.Site.Assert.Fail("Time out when waiting for the SYN packet");
}
// Verify the SYN packet.
if (verifyPacket)
{
VerifySYNPacket(synPacket, udpTransportMode);
}
// Send a SYN and ACK packet.
if (this.clientRdpudpVerfionInfoValidFlag == uSynExFlags_Values.RDPUDP_VERSION_INFO_VALID)
{
//Section 3.1.5.1.3: The uUdpVer field MUST be set to the highest RDP-UDP protocol version supported by both endpoints.
uUdpVer = uUdpVer > this.clientUUdpVer ? this.clientUUdpVer : uUdpVer;
SendSynAndAckPacket(udpTransportMode, SynAndAck_InvalidType.None, initSequenceNumber, uUdpVer);
}
else if(this.clientRdpudpVerfionInfoValidFlag == uSynExFlags_Values.None)
{
//Section 3.1.5.1.3: The highest version supported by both endpoints, which is RDPUDP_PROTOCOL_VERSION_1 if either this packet or the SYN packet does not specify a version, is the version that MUST be used by both endpoints.
SendSynAndAckPacket(udpTransportMode, SynAndAck_InvalidType.None, initSequenceNumber, uUdpVer_Values.RDPUDP_PROTOCOL_VERSION_1);
}
else
{
//Section 3.1.5.1.3: The RDPUDP_SYNEX_PAYLOAD structure (section 2.2.2.9) SHOULD only be present if it is also present in the received SYN packet.
// When the
SendSynAndAckPacket(udpTransportMode, SynAndAck_InvalidType.None, initSequenceNumber,null);
}
// Expect an ACK packet or ACK and Source Packet.
RdpeudpPacket ackPacket = rdpudpSocket.ExpectACKPacket(timeout);
if (ackPacket == null)
{
this.Site.Assert.Fail("Time out when waiting for the ACK packet to response the ACK and SYN packet");
}
// Verify the ACK packet.
if (verifyPacket)
{
VerifyACKPacket(ackPacket);
}
// If the packet is an ACK and Source Packet, add the source packet to the un-processed packet.
if (ackPacket.fecHeader.uFlags.HasFlag(RDPUDP_FLAG.RDPUDP_FLAG_DATA))
{
byte[] bytes = PduMarshaler.Marshal(ackPacket, false);
RdpeudpBasePacket stackpacket = new RdpeudpBasePacket(bytes);
rdpudpSocket.ReceivePacket(stackpacket);
}
rdpudpSocket.Connected = true;
return rdpudpSocket;
}