[StructLayout(LayoutKind.Sequential)] public struct MSG { public IntPtr hwnd; public uint message; public IntPtr wParam; public IntPtr lParam; public uint time; public System.Drawing.Point p; } public enum WaitReturn { Complete, Timeout, } class Utils { [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool PeekMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax, uint wRemoveMsg); [DllImport("user32.dll")] static extern bool TranslateMessage([In] ref MSG lpMsg); [DllImport("user32.dll")] static extern IntPtr DispatchMessage([In] ref MSG lpmsg); const uint PM_REMOVE = 1; public static WaitReturn WaitForComplete(double mill, WaitHandle wh) { TimeSpan goal = new TimeSpan(DateTime.Now.AddMilliseconds(mill).Ticks); do { MSG msg = new MSG(); if (PeekMessage(out msg, IntPtr.Zero, 0, 0, PM_REMOVE)) { TranslateMessage(ref msg); DispatchMessage(ref msg); } if (wh.WaitOne(new TimeSpan(0, 0, 0), false)) { return WaitReturn.Complete; } if (goal.CompareTo(new TimeSpan(DateTime.Now.Ticks)) < 0) { return WaitReturn.Timeout; } } while (true); } } class Client : DicomNet { DicomExceptionCode _LastError = DicomExceptionCode.Success; AutoResetEvent waitEvent = new AutoResetEvent(false); public Client() : base(null, DicomNetSecurityeMode.None) { } public DicomExceptionCode LastError { get { return _LastError; } } public bool Wait() { WaitReturn ret; _LastError = DicomExceptionCode.Success; ret = Utils.WaitForComplete((5 * 60) * 1000, waitEvent); return (ret == WaitReturn.Complete); } protected override void OnConnect(DicomExceptionCode error) { _LastError = error; waitEvent.Set(); } protected override void OnReceiveAssociateAccept(DicomAssociate association) { waitEvent.Set(); } protected override void OnReceiveAssociateReject(DicomAssociateRejectResultType result, DicomAssociateRejectSourceType source, DicomAssociateRejectReasonType reason) { Debug.Assert(result == DicomAssociateRejectResultType.Permanent, "Result should be: " + DicomAssociateRejectResultType.Permanent.ToString()); Debug.Assert(source == DicomAssociateRejectSourceType.User, "Source should be: " + DicomAssociateRejectSourceType.User.ToString()); Debug.Assert(reason == DicomAssociateRejectReasonType.Limit, " Reason should be: " + DicomAssociateRejectReasonType.Limit.ToString()); waitEvent.Set(); } protected override void OnReceiveReleaseResponse() { waitEvent.Set(); } } class ServerConnection : DicomNet { public bool Fail = false; public ServerConnection() : base(null, DicomNetSecurityeMode.None) { } protected override void OnReceiveAssociateRequest(DicomAssociate association) { DicomAssociate retAssociation = new DicomAssociate(false); if(Fail) { SendAssociateReject(DicomAssociateRejectResultType.Permanent, DicomAssociateRejectSourceType.User, DicomAssociateRejectReasonType.Limit); return; } Debug.Assert(association.Called == "ServerTest", "Called AETitle should be ServerTest"); Debug.Assert(association.Calling == "ClientTest", "Calling AETitle should be ClientTest"); Debug.Assert(association.ImplementClass == "1.2.840.114257.1", "Implementation class should be 1.2.840.114257.1"); Debug.Assert(association.ImplementationVersionName == "1", "Implementation version should be 1"); Debug.Assert(association.MaxLength == 0x100000, "Max length should be 0x100000"); Debug.Assert(association.GetAbstract(1) == DicomUidType.VerificationClass, "Presentation index 1 should be " + DicomUidType.VerificationClass); Debug.Assert(association.GetTransfer(1, 0) == DicomUidType.ImplicitVRLittleEndian, "Abstract Syntax (1,0) should be " + DicomUidType.ImplicitVRLittleEndian); // // Build our Association Accept // retAssociation.Called = association.Called; retAssociation.Calling = association.Calling; retAssociation.ImplementClass = association.ImplementClass; retAssociation.ImplementationVersionName = association.ImplementationVersionName; for (int x = 0; x < association.PresentationContextCount; x++) { byte id = association.GetPresentationContextID(x); string abSyntax = association.GetAbstract(id); string trSyntax = DicomUidType.ImplicitVRLittleEndian; retAssociation.AddPresentationContext(id, 0, abSyntax); if (association.GetTransferCount(id) > 0) { trSyntax = association.GetTransfer(id, 0); } //Over here we can call retAssociation.SetAbstract to update the abstract //syntax for any of the sresentation contexts retAssociation.AddTransfer(id, trSyntax); if (retAssociation.GetTransferCount(id) == 0) { // // Presentation id doesn't have any abstract // syntaxes therefore we will reject it. // retAssociation.SetResult(id, DicomAssociateAcceptResultType.AbstractSyntax); Debug.Assert(retAssociation.GetResult(id) == DicomAssociateAcceptResultType.AbstractSyntax, "Result should be: " + DicomAssociateAcceptResultType.AbstractSyntax.ToString()); } // We can also call in here SetPresentationContextID if we would like // to change some of the presentation IDs // And SetTransfer to update the Transfer Syntax for a certian // presentation context. } SendAssociateAccept(retAssociation); } protected override void OnReceiveReleaseRequest() { SendReleaseResponse(); } }; class Server : DicomNet { ServerConnection client; public Server() : base(null, DicomNetSecurityeMode.None) { } public bool Fail { get { if (client == null) return false; return client.Fail; } set { if(client!=null) { client.Fail = value; } } } protected override void OnAccept(DicomExceptionCode error) { client = new ServerConnection(); Accept(client); } } public void SendAssociateRequestSample() { DicomEngine.Startup(); DicomNet.Startup(); using (Server server = new Server()) { using (Client client = new Client()) { // // Connect to server // server.Listen("127.0.0.1", 104, 1); // start server client.Connect(null, 1000, "127.0.0.1", 104); // connect to server if (!client.Wait()) // wait for connection to finish { Debug.Fail("Connection timed out"); } Debug.Assert(client.LastError == DicomExceptionCode.Success, "Connection failed"); Debug.Assert(client.IsConnected(), "Client not connected"); // // Send associate request // DicomAssociate associate = new DicomAssociate(true); associate.Called = "ServerTest"; associate.Calling = "ClientTest"; associate.ImplementClass = "1.2.840.114257.1"; associate.ImplementationVersionName = "1"; associate.MaxLength = 0x100000; //We can also call in here associate.Default() to initialize //the association with default values. associate.AddPresentationContext(1, 0, DicomUidType.VerificationClass); associate.AddTransfer(1, DicomUidType.ImplicitVRLittleEndian); client.SendAssociateRequest(associate); if (!client.Wait()) // wait for connection to finish { Debug.Fail("SendAssociateRequest timed out"); } // // SendReleaseRequest // client.SendReleaseRequest(); if (!client.Wait()) // wait for connection to finish { Debug.Fail("SendAssociateRequest timed out"); } // // Force association to send SendAssociateReject. This is for // testing purposes only. Only one association should be sent // per connection. // server.Fail = true; client.SendAssociateRequest(associate); if (!client.Wait()) // wait for connection to finish { Debug.Fail("SendAssociateRequest timed out"); } server.Fail = false; // // SendReleaseRequest // client.SendReleaseRequest(); if (!client.Wait()) // wait for connection to finish { Debug.Fail("SendAssociateRequest timed out"); } client.CloseForced(true); } server.CloseForced(true); } DicomEngine.Shutdown(); DicomNet.Shutdown(); } |