C#
C++/CLI
public void SendReleaseResponse() public:void SendReleaseResponse();
SendReleaseResponse is sent by the server in response to a SendReleaseRequest call placed by the client. It generates a call to OnReceiveReleaseResponse on the client. The client and server can now close the DICOM Association by calling Close. For more information about ending a DICOM Association, refer to Closing a DICOM Associate Connection. Please note that ending the DICOM Association by calling SendReleaseRequest and SendReleaseResponse is preferable to calling SendAbort.
using Leadtools;using Leadtools.Dicom;[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, DicomNetSecurityMode.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, DicomNetSecurityMode.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 contextsretAssociation.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, DicomNetSecurityMode.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 serverclient.Connect(null, 1000, "127.0.0.1", 104); // connect to serverif (!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();}