private static HttpListener matchFromList(
string host, string path, List <HttpListenerPrefix> list, out HttpListenerPrefix prefix)
{
prefix = null;
if (list == null)
{
return(null);
}
HttpListener bestMatch = null;
var bestLen = -1;
foreach (var pref in list)
{
var ppath = pref.Path;
if (ppath.Length < bestLen)
{
continue;
}
if (path.StartsWith(ppath))
{
bestLen = ppath.Length;
bestMatch = pref.Listener;
prefix = pref;
}
}
return(bestMatch);
}
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(
400, String.Format("There's another listener for {0}.", prefix)); // TODO: Code?
}
return;
}
prefs2 = new Dictionary <HttpListenerPrefix, HttpListener> (prefs);
prefs2[prefix] = listener;
}while (Interlocked.CompareExchange(ref _prefixes, prefs2, prefs) != prefs);
}
private void init()
{
_context = new HttpListenerContext(this);
_inputState = InputState.RequestLine;
_inputStream = null;
_lineState = LineState.None;
_outputStream = null;
_position = 0;
_prefix = null;
_requestBuffer = new MemoryStream();
}
/// <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 void addSpecial(List <HttpListenerPrefix> prefixes, HttpListenerPrefix prefix)
{
var path = prefix.Path;
foreach (var pref in prefixes)
{
if (pref.Path == path)
{
throw new HttpListenerException(400, "The prefix is already in use."); // TODO: Code?
}
}
prefixes.Add(prefix);
}
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 path = pref.Path;
if (path.IndexOf('%') != -1)
{
throw new HttpListenerException(400, "Invalid path."); // TODO: Code?
}
if (path.IndexOf("//", StringComparison.Ordinal) != -1)
{
throw new HttpListenerException(400, "Invalid path."); // TODO: Code?
}
// Listens on all the interfaces if host name cannot be parsed by IPAddress.
getEndPointListener(pref, listener).AddPrefix(pref, listener);
}
private static void removePrefix(string uriPrefix, HttpListener listener)
{
var pref = new HttpListenerPrefix(uriPrefix);
var path = pref.Path;
if (path.IndexOf('%') != -1)
{
return;
}
if (path.IndexOf("//", StringComparison.Ordinal) != -1)
{
return;
}
getEndPointListener(pref, listener).RemovePrefix(pref, listener);
}
private static EndPointListener getEndPointListener(
HttpListenerPrefix prefix, HttpListener listener)
{
var addr = convertToIPAddress(prefix.Host);
Dictionary <int, EndPointListener> eps;
if (_addressToEndpoints.ContainsKey(addr))
{
eps = _addressToEndpoints[addr];
}
else
{
eps = new Dictionary <int, EndPointListener> ();
_addressToEndpoints[addr] = eps;
}
var port = prefix.Port;
EndPointListener lsnr;
if (eps.ContainsKey(port))
{
lsnr = eps[port];
}
else
{
lsnr = new EndPointListener(
addr,
port,
listener.ReuseAddress,
prefix.IsSecure,
listener.CertificateFolderPath,
listener.SslConfiguration);
eps[port] = lsnr;
}
return(lsnr);
}
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);
checkIfRemove();
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);
checkIfRemove();
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);
checkIfRemove();
}
private HttpListener searchListener(Uri uri, out HttpListenerPrefix prefix)
{
prefix = null;
if (uri == null)
{
return(null);
}
var host = uri.Host;
var dns = Uri.CheckHostName(host) == UriHostNameType.Dns;
var port = uri.Port;
var path = HttpUtility.UrlDecode(uri.AbsolutePath);
var pathSlash = path[path.Length - 1] == '/' ? path : path + "/";
HttpListener bestMatch = null;
var bestLen = -1;
if (host != null && host.Length > 0)
{
foreach (var pref in _prefixes.Keys)
{
var ppath = pref.Path;
if (ppath.Length < bestLen)
{
continue;
}
if (pref.Port != port)
{
continue;
}
if (dns)
{
var phost = pref.Host;
if (Uri.CheckHostName(phost) == UriHostNameType.Dns && phost != host)
{
continue;
}
}
if (path.StartsWith(ppath) || pathSlash.StartsWith(ppath))
{
bestLen = ppath.Length;
bestMatch = _prefixes[pref];
prefix = pref;
}
}
if (bestLen != -1)
{
return(bestMatch);
}
}
var list = _unhandled;
bestMatch = matchFromList(host, path, list, out prefix);
if (path != pathSlash && bestMatch == null)
{
bestMatch = matchFromList(host, pathSlash, list, out prefix);
}
if (bestMatch != null)
{
return(bestMatch);
}
list = _all;
bestMatch = matchFromList(host, path, list, out prefix);
if (path != pathSlash && bestMatch == null)
{
bestMatch = matchFromList(host, pathSlash, list, out prefix);
}
if (bestMatch != null)
{
return(bestMatch);
}
return(null);
}
