/// <summary>
/// Retrieve a static route.
/// </summary>
/// <param name="method">The HTTP method.</param>
/// <param name="path">URL path.</param>
/// <returns>StaticRoute if the route exists, otherwise null.</returns>
public StaticRoute Get(HttpMethod method, string path)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
path = path.ToLower();
if (!path.StartsWith("/"))
{
path = "/" + path;
}
if (!path.EndsWith("/"))
{
path = path + "/";
}
lock (_Lock)
{
StaticRoute curr = _Routes.FirstOrDefault(i => i.Method == method && i.Path == path);
if (curr == null || curr == default(StaticRoute))
{
return(null);
}
else
{
return(curr);
}
}
}
private void Add(StaticRoute route)
{
if (route == null)
{
throw new ArgumentNullException(nameof(route));
}
route.Path = route.Path.ToLower();
if (!route.Path.StartsWith("/"))
{
route.Path = "/" + route.Path;
}
if (!route.Path.EndsWith("/"))
{
route.Path = route.Path + "/";
}
if (Exists(route.Method, route.Path))
{
return;
}
lock (_Lock)
{
_Routes.Add(route);
}
}
public StaticRoute Get(string verb, string path)
{
if (String.IsNullOrEmpty(verb))
{
throw new ArgumentNullException(nameof(verb));
}
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
verb = verb.ToLower();
path = path.ToLower();
if (!path.StartsWith("/"))
{
path = "/" + path;
}
if (!path.EndsWith("/"))
{
path = path + "/";
}
lock (RouteLock)
{
StaticRoute curr = Routes.FirstOrDefault(i => i.Verb == verb && i.Path == path);
if (curr == null || curr == default(StaticRoute))
{
return(null);
}
else
{
return(curr);
}
}
}
public void Remove(string verb, string path)
{
if (String.IsNullOrEmpty(verb))
{
throw new ArgumentNullException(nameof(verb));
}
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
StaticRoute r = Get(verb, path);
if (r == null || r == default(StaticRoute))
{
return;
}
else
{
lock (RouteLock)
{
Routes.Remove(r);
}
return;
}
}
/// <summary>
/// Match a request method and URL to a handler method.
/// </summary>
/// <param name="method">The HTTP method.</param>
/// <param name="path">URL path.</param>
/// <param name="route">Matching route.</param>
/// <returns>Method to invoke.</returns>
public Func <HttpContext, Task> Match(HttpMethod method, string path, out StaticRoute route)
{
route = null;
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
path = path.ToLower();
if (!path.StartsWith("/"))
{
path = "/" + path;
}
if (!path.EndsWith("/"))
{
path = path + "/";
}
lock (_Lock)
{
StaticRoute curr = _Routes.FirstOrDefault(i => i.Method == method && i.Path == path);
if (curr == null || curr == default(StaticRoute))
{
return(null);
}
else
{
route = curr;
return(curr.Handler);
}
}
}
private void Remove(StaticRoute route)
{
if (route == null)
{
throw new ArgumentNullException(nameof(route));
}
lock (_Lock)
{
_Routes.Remove(route);
}
return;
}
/// <summary>
/// Add a route.
/// </summary>
/// <param name="method">The HTTP method.</param>
/// <param name="path">URL path, i.e. /path/to/resource.</param>
/// <param name="handler">Method to invoke.</param>
public void Add(HttpMethod method, string path, Func <HttpRequest, HttpResponse> handler)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
StaticRoute r = new StaticRoute(method, path, handler);
Add(r);
}
/// <summary>
/// Add a route.
/// </summary>
/// <param name="method">The HTTP method.</param>
/// <param name="path">URL path, i.e. /path/to/resource.</param>
/// <param name="handler">Method to invoke.</param>
/// <param name="guid">Globally-unique identifier.</param>
/// <param name="metadata">User-supplied metadata.</param>
public void Add(HttpMethod method, string path, Func <HttpContext, Task> handler, string guid = null, object metadata = null)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
StaticRoute r = new StaticRoute(method, path, handler, guid, metadata);
Add(r);
}
/// <summary>
/// Remove a route.
/// </summary>
/// <param name="method">The HTTP method.</param>
/// <param name="path">URL path.</param>
public void Remove(HttpMethod method, string path)
{
if (String.IsNullOrEmpty(path))
{
throw new ArgumentNullException(nameof(path));
}
StaticRoute r = Get(method, path);
if (r == null || r == default(StaticRoute))
{
return;
}
else
{
lock (_Lock)
{
_Routes.Remove(r);
}
return;
}
}
private async Task AcceptConnections(CancellationToken token)
{
try
{
#region Process-Requests
while (_HttpListener.IsListening)
{
if (_RequestCount >= _Settings.IO.MaxRequests)
{
await Task.Delay(100, token).ConfigureAwait(false);
continue;
}
HttpListenerContext listenerCtx = await _HttpListener.GetContextAsync().ConfigureAwait(false);
Interlocked.Increment(ref _RequestCount);
HttpContext ctx = null;
Task unawaited = Task.Run(async() =>
{
DateTime startTime = DateTime.Now;
try
{
#region Build-Context
Events.HandleConnectionReceived(this, new ConnectionEventArgs(
listenerCtx.Request.RemoteEndPoint.Address.ToString(),
listenerCtx.Request.RemoteEndPoint.Port));
ctx = new HttpContext(listenerCtx, _Settings, Events);
Events.HandleRequestReceived(this, new RequestEventArgs(ctx));
if (_Settings.Debug.Requests)
{
Events.Logger?.Invoke(
_Header + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
Statistics.IncrementRequestCounter(ctx.Request.Method);
Statistics.IncrementReceivedPayloadBytes(ctx.Request.ContentLength);
#endregion
#region Check-Access-Control
if (!_Settings.AccessControl.Permit(ctx.Request.Source.IpAddress))
{
Events.HandleRequestDenied(this, new RequestEventArgs(ctx));
if (_Settings.Debug.AccessControl)
{
Events.Logger?.Invoke(_Header + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " denied due to access control");
}
listenerCtx.Response.StatusCode = 403;
listenerCtx.Response.Close();
return;
}
#endregion
#region Process-Preflight-Requests
if (ctx.Request.Method == HttpMethod.OPTIONS)
{
if (_Routes.Preflight != null)
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "preflight route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
await _Routes.Preflight(ctx).ConfigureAwait(false);
return;
}
}
#endregion
#region Pre-Routing-Handler
bool terminate = false;
if (_Routes.PreRouting != null)
{
terminate = await _Routes.PreRouting(ctx).ConfigureAwait(false);
if (terminate)
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "prerouting terminated connection for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
return;
}
}
#endregion
#region Content-Routes
if (ctx.Request.Method == HttpMethod.GET || ctx.Request.Method == HttpMethod.HEAD)
{
ContentRoute cr = null;
if (_Routes.Content.Match(ctx.Request.Url.RawWithoutQuery, out cr))
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "content route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.RouteType = RouteTypeEnum.Content;
ctx.Route = cr;
await _Routes.ContentHandler.Process(ctx, token).ConfigureAwait(false);
return;
}
}
#endregion
#region Static-Routes
StaticRoute sr = null;
Func <HttpContext, Task> handler = _Routes.Static.Match(ctx.Request.Method, ctx.Request.Url.RawWithoutQuery, out sr);
if (handler != null)
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "static route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.RouteType = RouteTypeEnum.Static;
ctx.Route = sr;
await handler(ctx).ConfigureAwait(false);
return;
}
#endregion
#region Parameter-Routes
ParameterRoute pr = null;
Dictionary <string, string> parameters = null;
handler = _Routes.Parameter.Match(ctx.Request.Method, ctx.Request.Url.RawWithoutQuery, out parameters, out pr);
if (handler != null)
{
ctx.Request.Url.Parameters = new Dictionary <string, string>(parameters);
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "parameter route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.RouteType = RouteTypeEnum.Parameter;
ctx.Route = pr;
await handler(ctx).ConfigureAwait(false);
return;
}
#endregion
#region Dynamic-Routes
DynamicRoute dr = null;
handler = _Routes.Dynamic.Match(ctx.Request.Method, ctx.Request.Url.RawWithoutQuery, out dr);
if (handler != null)
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "dynamic route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.RouteType = RouteTypeEnum.Dynamic;
ctx.Route = dr;
await handler(ctx).ConfigureAwait(false);
return;
}
#endregion
#region Default-Route
if (_Routes.Default != null)
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "default route for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.RouteType = RouteTypeEnum.Default;
await _Routes.Default(ctx).ConfigureAwait(false);
return;
}
else
{
if (_Settings.Debug.Routing)
{
Events.Logger?.Invoke(
_Header + "default route not found for " + ctx.Request.Source.IpAddress + ":" + ctx.Request.Source.Port + " " +
ctx.Request.Method.ToString() + " " + ctx.Request.Url.RawWithoutQuery);
}
ctx.Response.StatusCode = 404;
ctx.Response.ContentType = Pages.Default404Page.ContentType;
await ctx.Response.Send(Pages.Default404Page.Content).ConfigureAwait(false);
return;
}
#endregion
}
catch (Exception eInner)
{
ctx.Response.StatusCode = 500;
ctx.Response.ContentType = Pages.Default500Page.ContentType;
await ctx.Response.Send(Pages.Default500Page.Content).ConfigureAwait(false);
Events.HandleExceptionEncountered(this, new ExceptionEventArgs(ctx, eInner));
}
finally
{
Interlocked.Decrement(ref _RequestCount);
if (ctx != null && ctx.Response != null && ctx.Response.ResponseSent)
{
Events.HandleResponseSent(this, new ResponseEventArgs(ctx, TotalMsFrom(startTime)));
Statistics.IncrementSentPayloadBytes(ctx.Response.ContentLength);
}
}
}, token);
}
#endregion
}
catch (TaskCanceledException)
{
}
catch (OperationCanceledException)
{
}
catch (HttpListenerException)
{
}
catch (Exception e)
{
Events.HandleExceptionEncountered(this, new ExceptionEventArgs(null, e));
}
finally
{
Events.HandleServerStopped(this, EventArgs.Empty);
}
}