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DelegatedServer Class

Summary

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

Syntax

C++

public class DelegatedServer

Public Class DelegatedServer

public ref class DelegatedServer

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.

Example

                                                                                                                                       
id="CSharpExampleTab" onclick="$.selectCodeContainer(this)">C#
 id="VBExampleTab" onclick="$.selectCodeContainer(this)">VB

 codeContainer VBExample hide">Imports Leadtools  Imports Leadtools.Codecs  Imports Leadtools.Jpip  Imports Leadtools.Jpip.Client.WinForms  Imports Leadtools.Jpip.Client.InteractiveDecoder  Imports Leadtools.Jpip.Server  Imports Leadtools.Jpip.Logging   <TestClass()> _  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 = Path.Combine(LEAD_VARS.ImagesDir, "Earth8000_Precint_4_.j2k")  Private CACHE_DIRECTORY As String = Path.Combine(LEAD_VARS.ImagesDir, "jpeg2000")  Public Sub New()  _server = New JpipServer()  End Sub   <TestMethod()> _  Public Sub SetServerDelegation()  style="color:Blue;">#If LEADTOOLS_V175_OR_LATER Then  Leadtools.Examples.Support.SetLicense()  style="color:Blue;">#Else  Leadtools.Examples.Support.Unlock()  style="color:Blue;">#End If ' #If LEADTOOLS_V175_OR_LATER Then  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   Public NotInheritable Class LEAD_VARS  Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"  End Class

codeContainer CSharpExample hide">

using Leadtools;  using Leadtools.Codecs;  using Leadtools.Jpip;  using Leadtools.Jpip.Client.WinForms;  using Leadtools.Jpip.Client.InteractiveDecoder;  using Leadtools.Jpip.Server;  using Leadtools.Jpip.Logging;   private JpipServer _server;                 private const string LOCAL_IP_ADDRESS = "127.0.0.1";  private const int PORT_107 = 107;  private string IMAGE_NAME = Path.Combine(LEAD_VARS.ImagesDir, "Earth8000_Precint_4_.j2k");  private string CACHE_DIRECTORY = Path.Combine(LEAD_VARS.ImagesDir, "jpeg2000");  public ServerDelegationExample ( )  {  _server = new JpipServer ( ) ;  }   public void SetServerDelegation ( )   {  style="color:Blue;">#if LEADTOOLS_V175_OR_LATER  Leadtools.Examples.Support.SetLicense();  style="color:Blue;">#else  Leadtools.Examples.Support.Unlock();  style="color:Blue;">#endif // #if LEADTOOLS_V175_OR_LATER  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;  }  }   static class LEAD_VARS  {  public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";  }