mcs/class/System/System.Net/EndPointManager.cs

   1 //
   2 // System.Net.EndPointManager
   3 //
   4 // Author:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // Copyright (c) 2005 Novell, Inc. (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System.Collections;
  30 using System.Collections.Generic;
  31 namespace System.Net {
  32         sealed class EndPointManager
  33         {
  34                 // Dictionary<IPAddress, Dictionary<int, EndPointListener>>
  35                 static Hashtable ip_to_endpoints = new Hashtable ();
  36
  37                 private EndPointManager ()
  38                 {
  39                 }
  40
  41                 public static void AddListener (HttpListener listener)
  42                 {
  43                         ArrayList added = new ArrayList ();
  44                         try {
  45                                 lock (ip_to_endpoints) {
  46                                         foreach (string prefix in listener.Prefixes) {
  47                                                 AddPrefixInternal (prefix, listener);
  48                                                 added.Add (prefix);
  49                                         }
  50                                 }
  51                         } catch {
  52                                 foreach (string prefix in added) {
  53                                         RemovePrefix (prefix, listener);
  54                                 }
  55                                 throw;
  56                         }
  57                 }
  58
  59                 public static void AddPrefix (string prefix, HttpListener listener)
  60                 {
  61                         lock (ip_to_endpoints) {
  62                                 AddPrefixInternal (prefix, listener);
  63                         }
  64                 }
  65
  66                 static void AddPrefixInternal (string p, HttpListener listener)
  67                 {
  68                         ListenerPrefix lp = new ListenerPrefix (p);
  69                         if (lp.Path.IndexOf ('%') != -1)
  70                                 throw new HttpListenerException (400, "Invalid path.");
  71
  72                         if (lp.Path.IndexOf ("//", StringComparison.Ordinal) != -1) // TODO: Code?
  73                                 throw new HttpListenerException (400, "Invalid path.");
  74
  75                         // listens on all the interfaces if host name cannot be parsed by IPAddress.
  76                         EndPointListener epl = GetEPListener (lp.Host, lp.Port, listener, lp.Secure);
  77                         epl.AddPrefix (lp, listener);
  78                 }
  79
  80                 static EndPointListener GetEPListener (string host, int port, HttpListener listener, bool secure)
  81                 {
  82                         IPAddress addr;
  83                         if (host == "*")
  84                                 addr = IPAddress.Any;
  85                         else if (IPAddress.TryParse(host, out addr) == false){
  86                                 try {
  87                                         IPHostEntry iphost = Dns.GetHostByName(host);
  88                                         if (iphost != null)
  89                                                 addr = iphost.AddressList[0];
  90                                         else
  91                                                 addr = IPAddress.Any;
  92                                 } catch {
  93                                         addr = IPAddress.Any;
  94                                 }
  95                         }
  96                         Hashtable p = null;  // Dictionary<int, EndPointListener>
  97                         if (ip_to_endpoints.ContainsKey (addr)) {
  98                                 p = (Hashtable) ip_to_endpoints [addr];
  99                         } else {
 100                                 p = new Hashtable ();
 101                                 ip_to_endpoints [addr] = p;
 102                         }
 103
 104                         EndPointListener epl = null;
 105                         if (p.ContainsKey (port)) {
 106                                 epl = (EndPointListener) p [port];
 107                         } else {
 108                                 epl = new EndPointListener (listener, addr, port, secure);
 109                                 p [port] = epl;
 110                         }
 111
 112                         return epl;
 113                 }
 114
 115                 public static void RemoveEndPoint (EndPointListener epl, IPEndPoint ep)
 116                 {
 117                         lock (ip_to_endpoints) {
 118                                 // Dictionary<int, EndPointListener> p
 119                                 Hashtable p = null;
 120                                 p = (Hashtable) ip_to_endpoints [ep.Address];
 121                                 p.Remove (ep.Port);
 122                                 if (p.Count == 0) {
 123                                         ip_to_endpoints.Remove (ep.Address);
 124                                 }
 125                                 epl.Close ();
 126                         }
 127                 }
 128
 129                 public static void RemoveListener (HttpListener listener)
 130                 {
 131                         lock (ip_to_endpoints) {
 132                                 foreach (string prefix in listener.Prefixes) {
 133                                         RemovePrefixInternal (prefix, listener);
 134                                 }
 135                         }
 136                 }
 137
 138                 public static void RemovePrefix (string prefix, HttpListener listener)
 139                 {
 140                         lock (ip_to_endpoints) {
 141                                 RemovePrefixInternal (prefix, listener);
 142                         }
 143                 }
 144
 145                 static void RemovePrefixInternal (string prefix, HttpListener listener)
 146                 {
 147                         ListenerPrefix lp = new ListenerPrefix (prefix);
 148                         if (lp.Path.IndexOf ('%') != -1)
 149                                 return;
 150
 151                         if (lp.Path.IndexOf ("//", StringComparison.Ordinal) != -1)
 152                                 return;
 153
 154                         EndPointListener epl = GetEPListener (lp.Host, lp.Port, listener, lp.Secure);
 155                         epl.RemovePrefix (lp, listener);
 156                 }
 157         }
 158 }
 159