EndPointManager.cs :  » 2.6.4-mono-.net-core » System.Net » System » Net » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Net 
System.Net » System » Net » EndPointManager.cs
//
// System.Net.EndPointManager
//
// Author:
//  Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

#if NET_2_0 && SECURITY_DEP

using System.Collections;
using System.Collections.Generic;
namespace System.Net{
  sealed class EndPointManager
  {
    // Dictionary<IPAddress, Dictionary<int, EndPointListener>>
    static Hashtable ip_to_endpoints = new Hashtable ();
    
    private EndPointManager ()
    {
    }

    public static void AddListener (HttpListener listener)
    {
      ArrayList added = new ArrayList ();
      try {
        lock (ip_to_endpoints) {
          foreach (string prefix in listener.Prefixes) {
            AddPrefixInternal (prefix, listener);
            added.Add (prefix);
          }
        }
      } catch {
        foreach (string prefix in added) {
          RemovePrefix (prefix, listener);
        }
        throw;
      }
    }

    public static void AddPrefix (string prefix, HttpListener listener)
    {
      lock (ip_to_endpoints) {
        AddPrefixInternal (prefix, listener);
      }
    }

    static void AddPrefixInternal (string p, HttpListener listener)
    {
      ListenerPrefix lp = new ListenerPrefix (p);
      if (lp.Path.IndexOf ('%') != -1)
        throw new HttpListenerException (400, "Invalid path.");

      if (lp.Path.IndexOf ("//") != -1) // TODO: Code?
        throw new HttpListenerException (400, "Invalid path.");

      // Always listens on all the interfaces, no matter the host name/ip used.
      EndPointListener epl = GetEPListener (IPAddress.Any, lp.Port, listener, lp.Secure);
      epl.AddPrefix (lp, listener);
    }

    static EndPointListener GetEPListener (IPAddress addr, int port, HttpListener listener, bool secure)
    {
      Hashtable p = null;  // Dictionary<int, EndPointListener>
      if (ip_to_endpoints.ContainsKey (addr)) {
        p = (Hashtable) ip_to_endpoints [addr];
      } else {
        p = new Hashtable ();
        ip_to_endpoints [addr] = p;
      }

      EndPointListener epl = null;
      if (p.ContainsKey (port)) {
        epl = (EndPointListener) p [port];
      } else {
        epl = new EndPointListener (addr, port, secure);
        p [port] = epl;
      }

      return epl;
    }

    public static void RemoveEndPoint (EndPointListener epl, IPEndPoint ep)
    {
      lock (ip_to_endpoints) {
        // Dictionary<int, EndPointListener> p
        Hashtable p = null;
        p = (Hashtable) ip_to_endpoints [ep.Address];
        p.Remove (ep.Port);
        if (p.Count == 0) {
          ip_to_endpoints.Remove (ep.Address);
        }
        epl.Close ();
      }
    }

    public static void RemoveListener (HttpListener listener)
    {
      lock (ip_to_endpoints) {
        foreach (string prefix in listener.Prefixes) {
          RemovePrefixInternal (prefix, listener);
        }
      }
    }

    public static void RemovePrefix (string prefix, HttpListener listener)
    {
      lock (ip_to_endpoints) {
        RemovePrefixInternal (prefix, listener);
      }
    }

    static void RemovePrefixInternal (string prefix, HttpListener listener)
    {
      ListenerPrefix lp = new ListenerPrefix (prefix);
      if (lp.Path.IndexOf ('%') != -1)
        return;

      if (lp.Path.IndexOf ("//") != -1)
        return;

      EndPointListener epl = GetEPListener (IPAddress.Any, lp.Port, listener, lp.Secure);
      epl.RemovePrefix (lp, listener);
    }
  }
}
#endif

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