public void AddPrefix(HttpListenerPrefix prefix, HttpListener listener)
{
List <HttpListenerPrefix> current, future;
if (prefix.Host == "*")
{
do
{
current = _unhandled;
future = current != null
? new List <HttpListenerPrefix> (current)
: new List <HttpListenerPrefix> ();
prefix.Listener = listener;
addSpecial(future, prefix);
}while (Interlocked.CompareExchange(ref _unhandled, future, current) != current);
return;
}
if (prefix.Host == "+")
{
do
{
current = _all;
future = current != null
? new List <HttpListenerPrefix> (current)
: new List <HttpListenerPrefix> ();
prefix.Listener = listener;
addSpecial(future, prefix);
}while (Interlocked.CompareExchange(ref _all, future, current) != current);
return;
}
Dictionary <HttpListenerPrefix, HttpListener> prefs, prefs2;
do
{
prefs = _prefixes;
if (prefs.ContainsKey(prefix))
{
if (prefs[prefix] != listener)
{
throw new HttpListenerException(
87, String.Format("There's another listener for {0}.", prefix)
);
}
return;
}
prefs2 = new Dictionary <HttpListenerPrefix, HttpListener> (prefs);
prefs2[prefix] = listener;
}while (Interlocked.CompareExchange(ref _prefixes, prefs2, prefs) != prefs);
}
private static void removePrefix(string uriPrefix, HttpListener listener)
{
var pref = new HttpListenerPrefix(uriPrefix);
var addr = convertToIPAddress(pref.Host);
if (addr == null)
{
return;
}
if (!addr.IsLocal())
{
return;
}
int port;
if (!Int32.TryParse(pref.Port, out port))
{
return;
}
if (!port.IsPortNumber())
{
return;
}
var path = pref.Path;
if (path.IndexOf('%') != -1)
{
return;
}
if (path.IndexOf("//", StringComparison.Ordinal) != -1)
{
return;
}
var endpoint = new IPEndPoint(addr, port);
EndPointListener lsnr;
if (!_endpoints.TryGetValue(endpoint, out lsnr))
{
return;
}
if (lsnr.IsSecure ^ pref.IsSecure)
{
return;
}
lsnr.RemovePrefix(pref, listener);
}
private static void addSpecial(List <HttpListenerPrefix> prefixes, HttpListenerPrefix prefix)
{
var path = prefix.Path;
foreach (var pref in prefixes)
{
if (pref.Path == path)
{
throw new HttpListenerException(87, "The prefix is already in use.");
}
}
prefixes.Add(prefix);
}
/// <summary>
/// Adds the specified <paramref name="uriPrefix"/> to the collection.
/// </summary>
/// <param name="uriPrefix">
/// A <see cref="string"/> that represents the URI prefix to add. The prefix must be
/// a well-formed URI prefix with http or https scheme, and must end with a <c>'/'</c>.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="uriPrefix"/> is <see langword="null"/>.
/// </exception>
/// <exception cref="ArgumentException">
/// <paramref name="uriPrefix"/> is invalid.
/// </exception>
/// <exception cref="ObjectDisposedException">
/// The <see cref="HttpListener"/> associated with this collection is closed.
/// </exception>
public void Add(string uriPrefix)
{
_listener.CheckDisposed();
HttpListenerPrefix.CheckPrefix(uriPrefix);
if (_prefixes.Contains(uriPrefix))
{
return;
}
_prefixes.Add(uriPrefix);
if (_listener.IsListening)
{
EndPointManager.AddPrefix(uriPrefix, _listener);
}
}
private static bool removeSpecial(List <HttpListenerPrefix> prefixes, HttpListenerPrefix prefix)
{
var path = prefix.Path;
var cnt = prefixes.Count;
for (var i = 0; i < cnt; i++)
{
if (prefixes[i].Path == path)
{
prefixes.RemoveAt(i);
return(true);
}
}
return(false);
}
private static void addPrefix(string uriPrefix, HttpListener listener)
{
var pref = new HttpListenerPrefix(uriPrefix);
var addr = convertToIPAddress(pref.Host);
if (addr == null)
{
throw new HttpListenerException(87, "Includes an invalid host.");
}
if (!addr.IsLocal())
{
throw new HttpListenerException(87, "Includes an invalid host.");
}
int port;
if (!Int32.TryParse(pref.Port, out port))
{
throw new HttpListenerException(87, "Includes an invalid port.");
}
if (!port.IsPortNumber())
{
throw new HttpListenerException(87, "Includes an invalid port.");
}
var path = pref.Path;
if (path.IndexOf('%') != -1)
{
throw new HttpListenerException(87, "Includes an invalid path.");
}
if (path.IndexOf("//", StringComparison.Ordinal) != -1)
{
throw new HttpListenerException(87, "Includes an invalid path.");
}
var endpoint = new IPEndPoint(addr, port);
EndPointListener lsnr;
if (_endpoints.TryGetValue(endpoint, out lsnr))
{
if (lsnr.IsSecure ^ pref.IsSecure)
{
throw new HttpListenerException(87, "Includes an invalid scheme.");
}
}
else
{
lsnr =
new EndPointListener(
endpoint,
pref.IsSecure,
listener.CertificateFolderPath,
listener.SslConfiguration,
listener.ReuseAddress
);
_endpoints.Add(endpoint, lsnr);
}
lsnr.AddPrefix(pref, listener);
}
public void RemovePrefix(HttpListenerPrefix prefix, HttpListener listener)
{
List <HttpListenerPrefix> current, future;
if (prefix.Host == "*")
{
do
{
current = _unhandled;
if (current == null)
{
break;
}
future = new List <HttpListenerPrefix> (current);
if (!removeSpecial(future, prefix))
{
break; // The prefix wasn't found.
}
}while (Interlocked.CompareExchange(ref _unhandled, future, current) != current);
leaveIfNoPrefix();
return;
}
if (prefix.Host == "+")
{
do
{
current = _all;
if (current == null)
{
break;
}
future = new List <HttpListenerPrefix> (current);
if (!removeSpecial(future, prefix))
{
break; // The prefix wasn't found.
}
}while (Interlocked.CompareExchange(ref _all, future, current) != current);
leaveIfNoPrefix();
return;
}
Dictionary <HttpListenerPrefix, HttpListener> prefs, prefs2;
do
{
prefs = _prefixes;
if (!prefs.ContainsKey(prefix))
{
break;
}
prefs2 = new Dictionary <HttpListenerPrefix, HttpListener> (prefs);
prefs2.Remove(prefix);
}while (Interlocked.CompareExchange(ref _prefixes, prefs2, prefs) != prefs);
leaveIfNoPrefix();
}
