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C# / CSharp Open Source » Network Clients » DICOM 
DICOM » org » dicomcs » net » AAssociateRJ.cs
#region Copyright
// 
// This library is based on dcm4che see http://www.sourceforge.net/projects/dcm4che
// Copyright (c) 2002 by TIANI MEDGRAPH AG. All rights reserved.
//
// Modifications Copyright (C) 2002 Fang Yang. All rights reserved.
// 
// This file is part of dicomcs, see http://www.sourceforge.net/projects/dicom-cs
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.                                 
// 
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
// 
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Fang Yang (yangfang@email.com)
//
#endregion

namespace org.dicomcs.net{
  using System;
  using System.Text;
  using org.dicomcs.util;
  
  /// <summary>
  /// </summary>
  public class AAssociateRJ : PduI
  {
    public const int REJECTED_PERMANENT = 1;
    public const int REJECTED_TRANSIENT = 2;
    public const int SERVICE_USER = 1;
    public const int SERVICE_PROVIDER_ACSE = 2;
    public const int SERVICE_PROVIDER_PRES = 3;
    public const int NO_REASON_GIVEN = 1;
    public const int APPLICATION_CONTEXT_NAME_NOT_SUPPORTED = 2;
    public const int CALLING_AE_TITLE_NOT_RECOGNIZED = 3;
    public const int CALLED_AE_TITLE_NOT_RECOGNIZED = 7;
    public const int PROTOCOL_VERSION_NOT_SUPPORTED = 2;
    public const int TEMPORARY_CONGESTION = 1;
    public const int LOCAL_LIMIT_EXCEEDED = 2;

    private readonly byte[] buf;
    
    internal static AAssociateRJ Parse(UnparsedPdu raw)
    {
      if (raw.length() != 4)
      {
        throw new PduException("Illegal A-ASSOCIATE-RJ " + raw, new AAbort(AAbort.SERVICE_PROVIDER, AAbort.INVALID_PDU_PARAMETER_VALUE));
      }
      return new AAssociateRJ(raw.buffer());
    }
    
    public AAssociateRJ(byte[] buf)
    {
      this.buf = buf;
    }
    
    internal AAssociateRJ(int result, int source, int reason)
    {
      this.buf = new byte[]{3, 0, 0, 0, 0, 4, 0, (byte) result, (byte) source, (byte) reason};
    }
    
    /// <summary>
    /// Returns Result field value.
    /// </summary>
    /// <returns>
    /// Result field value. 
    /// </returns>
    public int result()
    {
      return buf[7] & 0xff;
    }
    
    /// <summary>
    /// Returns Source field value.
    /// </summary>
    /// <returns>
    /// Source field value. 
    /// </returns>
    public int source()
    {
      return buf[8] & 0xff;
    }
    
    /// <summary>
    /// Returns Reason field value.
    /// </summary>
    /// <returns>
    /// Reason field value. 
    /// </returns>
    public int reason()
    {
      return buf[9] & 0xff;
    }
    
    public void  WriteTo(System.IO.Stream outs)
    {
      outs.Write( buf, 0, buf.Length);
      StringUtils.dumpBytes( "AAssociateRJ", buf, 0, (int)buf.Length);
    }
    
    public String ToString(bool verbose)
    {
      return ToString();
    }
    
    public override String ToString()
    {
      return toStringBuffer(new StringBuilder()).ToString();
    }
    
    internal StringBuilder toStringBuffer(StringBuilder sb)
    {
      return sb.Append("A-ASSOCIATE-RJ\n\tresult=").Append(resultAsString()).Append("\n\tsource=").Append(sourceAsString()).Append("\n\treason=").Append(ReasonAsString());
    }
    
    private String resultAsString()
    {
      switch (result())
      {
        case REJECTED_PERMANENT: 
          return "1 - rejected-permanent";
        
        case REJECTED_TRANSIENT: 
          return "2 - rejected-transient";
        
        default: 
          return result().ToString();
        
      }
    }
    
    private String sourceAsString()
    {
      switch (source())
      {
        case SERVICE_USER: 
          return "1 - service-user";
        
        case SERVICE_PROVIDER_ACSE: 
          return "2 - service-provider (ACSE)";
        
        case SERVICE_PROVIDER_PRES: 
          return "3 - service-provider (Presentation)";
        
        default: 
          return source().ToString();
        
      }
    }
    
    private String ReasonAsString()
    {
      switch (source())
      {
        case SERVICE_USER: 
          switch (reason())
          {
            case NO_REASON_GIVEN: 
              return "1 - no-reason-given";
            
            case APPLICATION_CONTEXT_NAME_NOT_SUPPORTED: 
              return "2 - application-context-name-not-supported";
            
            case CALLING_AE_TITLE_NOT_RECOGNIZED: 
              return "3 - calling-AE-title-not-recognized";
            
            case CALLED_AE_TITLE_NOT_RECOGNIZED: 
              return "7 - called-AE-title-not-recognizedr";
            
          }
          goto case SERVICE_PROVIDER_ACSE;
        
        case SERVICE_PROVIDER_ACSE: 
          switch (reason())
          {
            case NO_REASON_GIVEN: 
              return "1 - no-reason-given";
            
            case PROTOCOL_VERSION_NOT_SUPPORTED: 
              return "2 - protocol-version-not-supported";
            
          }
          goto case SERVICE_PROVIDER_PRES;
        
        case SERVICE_PROVIDER_PRES: 
          switch (reason())
          {
            case TEMPORARY_CONGESTION: 
              return "1 - temporary-congestion";
            
            case LOCAL_LIMIT_EXCEEDED: 
              return "2 - local-limit-exceeded";
            
          }
          break;
        
      }
      return reason().ToString();
    }
  }
}
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