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DelegatedServer Class
See Also  Members   Example 
Leadtools.Jpip.Server Namespace : DelegatedServer Class



Defines all the properties needed to delegate a client's requests to another JPIP server.

Syntax

Visual Basic (Declaration) 
Public Class DelegatedServer 
Visual Basic (Usage)Copy Code
Dim instance As DelegatedServer
C# 
public class DelegatedServer 
C++/CLI 
public ref class DelegatedServer 

Example

Visual BasicCopy Code
Public Class ServerDelegationExample
    Private _server As JpipServer
    Private Const LOCAL_IP_ADDRESS As String = "127.0.0.1"
    Private Const PORT_107 As Integer = 107
    Private IMAGE_NAME As String = LeadtoolsExamples.Common.ImagesPath.Path + "Earth8000_Precint_4_.j2k"
    Private CACHE_DIRECTORY As String = LeadtoolsExamples.Common.ImagesPath.Path + "jpeg2000"

    Public Sub New()
        _server = New JpipServer()
    End Sub


    Public Sub SetServerDelegation()
        Leadtools.Examples.Support.Unlock()
        Dim delegatedServer1 As DelegatedServer
        Dim delegatedServer2 As DelegatedServer


        delegatedServer1 = New DelegatedServer("127.0.0.1", 108, 6)
        delegatedServer2 = New DelegatedServer("127.0.0.1", 105, 3)

        _server.Configuration.DelegateServers.Clear()
        _server.Configuration.DelegateServers.Add(delegatedServer1)
        _server.Configuration.DelegateServers.Add(delegatedServer2)

        Console.WriteLine("Server requests will be delegated to the following {0} servers:", _server.Configuration.DelegateServers.Count.ToString())

        For Each server As DelegatedServer In _server.Configuration.DelegateServers
            Console.WriteLine("Server: {0}:{1}", server.IpAddress, server.Port.ToString())
        Next server

        _server.Start()

        ' client side
        Dim jpipViewer As JpipRasterImageViewer = New JpipRasterImageViewer()
        SetViewer(jpipViewer)
        AddHandler jpipViewer.FileOpened, AddressOf jpipViewer_FileOpened
        jpipViewer.Open(IMAGE_NAME)
    End Sub
    Private Sub jpipViewer_FileOpened(ByVal sender As Object, ByVal e As EventArgs)
        Dim jpipViewer As JpipRasterImageViewer = DirectCast(sender, JpipRasterImageViewer)
        jpipViewer.ZoomIn()
        jpipViewer.Close()

        _server.Stop()


    End Sub

    Public Sub SetViewer(ByVal viewer As JpipRasterImageViewer)
        viewer.CacheDirectoryName = CACHE_DIRECTORY
        viewer.PortNumber = PORT_107
        viewer.IPAddress = LOCAL_IP_ADDRESS
        viewer.PacketSize = 16384
        viewer.ChannelType = JpipChannelTypes.HttpChannel
    End Sub

End Class
C#Copy Code
private JpipServer _server;                
private const string LOCAL_IP_ADDRESS = "127.0.0.1"; 
private const int PORT_107 = 107; 
private string IMAGE_NAME = LeadtoolsExamples.Common.ImagesPath.Path + "Earth8000_Precint_4_.j2k"; 
private string CACHE_DIRECTORY = LeadtoolsExamples.Common.ImagesPath.Path + "jpeg2000"; 
public ServerDelegationExample ( ) 

   _server = new JpipServer ( ) ; 

 
 
public void SetServerDelegation ( )  

    Leadtools.Examples.Support.Unlock(); 
   DelegatedServer delegatedServer1 ; 
   DelegatedServer delegatedServer2 ; 
   delegatedServer1 = new DelegatedServer ( "127.0.0.1", 108, 6 ) ; 
   delegatedServer2 = new DelegatedServer ( "127.0.0.1", 105, 3 ) ; 
   _server.Configuration.DelegateServers.Clear ( ) ; 
   _server.Configuration.DelegateServers.Add ( delegatedServer1 ) ; 
   _server.Configuration.DelegateServers.Add ( delegatedServer2 ) ; 
   Console.WriteLine ( "Server requests will be delegated to the following {0} servers:",  
                       _server.Configuration.DelegateServers.Count.ToString ( ) ) ; 
 
   foreach ( DelegatedServer server in _server.Configuration.DelegateServers ) 
   { 
      Console.WriteLine ( "Server: {0}:{1}", server.IpAddress, server.Port.ToString ( ) ) ; 
   } 
   _server.Start ( ) ; 
 
   /* client side */ 
   JpipRasterImageViewer jpipViewer = new JpipRasterImageViewer(); 
   jpipViewer.FileOpened += new EventHandler(jpipViewer_FileOpened); 
   SetViewer(jpipViewer); 
   jpipViewer.Open(IMAGE_NAME); 

 
void jpipViewer_FileOpened(object sender, EventArgs e) 

   JpipRasterImageViewer jpipViewer = ( JpipRasterImageViewer ) sender ; 
   jpipViewer.ZoomIn(); 
   jpipViewer.Close(); 
   _server.Stop ( ) ; 
 

 
public void SetViewer(JpipRasterImageViewer viewer) 

   viewer.CacheDirectoryName = CACHE_DIRECTORY; 
   viewer.PortNumber = PORT_107; 
   viewer.IPAddress = LOCAL_IP_ADDRESS; 
   viewer.PacketSize = 16384; 
   viewer.ChannelType = JpipChannelTypes.HttpChannel; 

      }

Remarks

You create an instance of this class with the properties you want and then you add it to the DelegatedServersCollection collection.

If multiple DelegatedServer are added into the DelegatedServersCollection collection the load is distributed based on a round-robin algorithm until each DelegatedServer receives its share.

Inheritance Hierarchy

System.Object
   Leadtools.Jpip.Server.DelegatedServer

Requirements

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

See Also

Leadtools.Jpip.Server requires a JPIP Module and a server license and unlock key. For more information, refer to: Imaging Pro/Document/Medical Features