private static void removePrefix(string uriPrefix, HttpListener listener)
{
var pref = new HttpListenerPrefix (uriPrefix);
if (pref.Path.IndexOf ('%') != -1)
return;
if (pref.Path.IndexOf ("//", StringComparison.Ordinal) != -1)
return;
var lsnr = getEndPointListener (pref.Host, pref.Port, listener, pref.IsSecure);
lsnr.RemovePrefix (pref, listener);
}
private void init()
{
_context = new HttpListenerContext (this);
_inputState = InputState.RequestLine;
_inputStream = null;
_lineState = LineState.None;
_outputStream = null;
_position = 0;
_prefix = null;
_requestBuffer = new MemoryStream ();
}
private HttpListener searchListener(Uri uri, out HttpListenerPrefix prefix)
{
prefix = null;
if (uri == null)
return null;
var host = uri.Host;
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.Host != host || pref.Port != port)
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;
}
private static void addPrefix(string uriPrefix, HttpListener listener)
{
var pref = new HttpListenerPrefix (uriPrefix);
if (pref.Path.IndexOf ('%') != -1)
throw new HttpListenerException (400, "Invalid path."); // TODO: Code?
if (pref.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.
var lsnr = getEndPointListener (pref.Host, pref.Port, listener, pref.IsSecure);
lsnr.AddPrefix (pref, 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 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;
}
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);
}
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 ();
}
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);
}
