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//
// System.Runtime.Remoting.Channels.Http.HttpRemotingHandlerFactory
//
// Authors:
// Martin Willemoes Hansen (mwh@sysrq.dk)
// Lluis Sanchez Gual (lluis@ximian.com)
//
// (C) 2003 Martin Willemoes Hansen
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Web;
using System.IO;
using System.Runtime.Remoting;
using System.Runtime.Remoting.Channels;
namespace System.Runtime.Remoting.Channels.Http
{
public class HttpRemotingHandlerFactory : IHttpHandlerFactory
{
public HttpRemotingHandlerFactory ()
{
}
private static HttpRemotingHandlerFactoryData CurrentHttpRemotingHandlerFactoryData
{
get
{
HttpRemotingHandlerFactoryData res = (HttpRemotingHandlerFactoryData)AppDomain.CurrentDomain.GetData("HttpRemotingHandlerFactory");
if (res == null)
{
res = new HttpRemotingHandlerFactoryData();
AppDomain.CurrentDomain.SetData("HttpRemotingHandlerFactory", res);
}
return res;
}
}
public IHttpHandler GetHandler (HttpContext context,
string verb,
string url,
string filePath)
{
if (!CurrentHttpRemotingHandlerFactoryData.webConfigLoaded)
ConfigureHttpChannel (context);
return new HttpRemotingHandler (CurrentHttpRemotingHandlerFactoryData.transportSink);
}
void ConfigureHttpChannel (HttpContext context)
{
lock (GetType())
{
if (CurrentHttpRemotingHandlerFactoryData.webConfigLoaded) return;
// Look for a channel that wants to receive http request
IChannelReceiverHook chook = null;
foreach (IChannel channel in ChannelServices.RegisteredChannels)
{
chook = channel as IChannelReceiverHook;
if (chook == null) continue;
if (chook.ChannelScheme != "http")
throw new RemotingException ("Only http channels are allowed when hosting remoting objects in a web server");
if (!chook.WantsToListen)
{
chook = null;
continue;
}
//found chook
break;
}
if (chook == null)
{
HttpChannel chan = new HttpChannel();
ChannelServices.RegisterChannel(chan);
chook = chan;
}
// Register the uri for the channel. The channel uri includes the scheme, the
// host and the application path
string channelUrl = context.Request.Url.GetLeftPart(UriPartial.Authority);
channelUrl += context.Request.ApplicationPath;
chook.AddHookChannelUri (channelUrl);
CurrentHttpRemotingHandlerFactoryData.transportSink = new HttpServerTransportSink (chook.ChannelSinkChain, null);
CurrentHttpRemotingHandlerFactoryData.webConfigLoaded = true;
}
}
public void ReleaseHandler (IHttpHandler handler)
{
}
}
internal class HttpRemotingHandlerFactoryData
{
internal bool webConfigLoaded = false;
internal HttpServerTransportSink transportSink = null;
}
}
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