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// <copyright>
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
namespace System.ServiceModel.Channels
{
using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Net;
using System.Runtime;
using System.ServiceModel;
internal sealed class UdpReplyChannel : UdpChannelBase<RequestContext>, IReplyChannel
{
public UdpReplyChannel(UdpReplyChannelListener listener, UdpSocket[] sockets, EndpointAddress localAddress, Uri via, bool isMulticast)
: base(
listener,
listener.MessageEncoderFactory.Encoder,
listener.BufferManager,
sockets,
listener.UdpTransportBindingElement.RetransmissionSettings,
listener.UdpTransportBindingElement.MaxPendingMessagesTotalSize,
localAddress,
via,
isMulticast,
(int)listener.UdpTransportBindingElement.MaxReceivedMessageSize)
{
UdpOutputChannel udpOutputChannel = new ServerUdpOutputChannel(
listener,
listener.MessageEncoderFactory.Encoder,
listener.BufferManager,
sockets,
listener.UdpTransportBindingElement.RetransmissionSettings,
via,
isMulticast);
this.SetOutputChannel(udpOutputChannel);
}
protected override bool IgnoreSerializationException
{
get
{
return true;
}
}
[SuppressMessage("Microsoft.StyleCop.CSharp.ReadabilityRules", "SA1100:DoNotPrefixCallsWithBaseUnlessLocalImplementationExists", Justification = "StyleCop 4.5 does not validate this rule properly.")]
public override T GetProperty<T>()
{
if (typeof(T) == typeof(IReplyChannel))
{
return (T)(object)this;
}
return base.GetProperty<T>();
}
public RequestContext ReceiveRequest()
{
return this.ReceiveRequest(this.DefaultReceiveTimeout);
}
public RequestContext ReceiveRequest(TimeSpan timeout)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return UdpReplyChannel.HelpReceiveRequest(this, timeout);
}
public IAsyncResult BeginReceiveRequest(AsyncCallback callback, object state)
{
return this.BeginReceiveRequest(this.DefaultReceiveTimeout, callback, state);
}
public IAsyncResult BeginReceiveRequest(TimeSpan timeout, AsyncCallback callback, object state)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return UdpReplyChannel.HelpBeginReceiveRequest(this, timeout, callback, state);
}
public RequestContext EndReceiveRequest(IAsyncResult result)
{
return UdpReplyChannel.HelpEndReceiveRequest(result);
}
public bool TryReceiveRequest(TimeSpan timeout, out RequestContext context)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return this.Dequeue(timeout, out context);
}
public IAsyncResult BeginTryReceiveRequest(TimeSpan timeout, AsyncCallback callback, object state)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return this.BeginDequeue(timeout, callback, state);
}
public bool EndTryReceiveRequest(IAsyncResult result, out RequestContext context)
{
return this.EndDequeue(result, out context);
}
public bool WaitForRequest(TimeSpan timeout)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return this.WaitForItem(timeout);
}
public IAsyncResult BeginWaitForRequest(TimeSpan timeout, AsyncCallback callback, object state)
{
if (timeout < TimeSpan.Zero)
{
throw FxTrace.Exception.AsError(new ArgumentOutOfRangeException("timeout", timeout, SR.TimeoutOutOfRange0));
}
this.ThrowPending();
return this.BeginWaitForItem(timeout, callback, state);
}
public bool EndWaitForRequest(IAsyncResult result)
{
return this.EndWaitForItem(result);
}
internal override void FinishEnqueueMessage(Message message, Action dequeuedCallback, bool canDispatchOnThisThread)
{
UdpRequestContext udpRequestContext = new UdpRequestContext(this.UdpOutputChannel, message);
this.EnqueueAndDispatch(udpRequestContext, dequeuedCallback, canDispatchOnThisThread);
}
private static RequestContext HelpReceiveRequest(IReplyChannel channel, TimeSpan timeout)
{
RequestContext requestContext;
if (channel.TryReceiveRequest(timeout, out requestContext))
{
return requestContext;
}
else
{
throw FxTrace.Exception.AsError(UdpReplyChannel.CreateReceiveRequestTimedOutException(channel, timeout));
}
}
private static IAsyncResult HelpBeginReceiveRequest(IReplyChannel channel, TimeSpan timeout, AsyncCallback callback, object state)
{
return new HelpReceiveRequestAsyncResult(channel, timeout, callback, state);
}
private static RequestContext HelpEndReceiveRequest(IAsyncResult result)
{
return HelpReceiveRequestAsyncResult.End(result);
}
private static Exception CreateReceiveRequestTimedOutException(IReplyChannel channel, TimeSpan timeout)
{
if (channel.LocalAddress != null)
{
return new TimeoutException(SR.ReceiveRequestTimedOut(channel.LocalAddress.Uri.AbsoluteUri, timeout));
}
else
{
return new TimeoutException(SR.ReceiveRequestTimedOutNoLocalAddress(timeout));
}
}
private class HelpReceiveRequestAsyncResult : AsyncResult
{
private static AsyncCallback onReceiveRequest = Fx.ThunkCallback(new AsyncCallback(OnReceiveRequest));
private IReplyChannel channel;
private TimeSpan timeout;
private RequestContext requestContext;
public HelpReceiveRequestAsyncResult(IReplyChannel channel, TimeSpan timeout, AsyncCallback callback, object state)
: base(callback, state)
{
this.channel = channel;
this.timeout = timeout;
IAsyncResult result = channel.BeginTryReceiveRequest(timeout, onReceiveRequest, this);
if (!result.CompletedSynchronously)
{
return;
}
this.HandleReceiveRequestComplete(result);
this.Complete(true);
}
public static RequestContext End(IAsyncResult result)
{
HelpReceiveRequestAsyncResult thisPtr = AsyncResult.End<HelpReceiveRequestAsyncResult>(result);
return thisPtr.requestContext;
}
private static void OnReceiveRequest(IAsyncResult result)
{
if (result.CompletedSynchronously)
{
return;
}
HelpReceiveRequestAsyncResult thisPtr = (HelpReceiveRequestAsyncResult)result.AsyncState;
Exception completionException = null;
try
{
thisPtr.HandleReceiveRequestComplete(result);
}
catch (Exception e)
{
if (Fx.IsFatal(e))
{
throw;
}
completionException = e;
}
thisPtr.Complete(false, completionException);
}
private void HandleReceiveRequestComplete(IAsyncResult result)
{
if (!this.channel.EndTryReceiveRequest(result, out this.requestContext))
{
throw FxTrace.Exception.AsError(UdpReplyChannel.CreateReceiveRequestTimedOutException(this.channel, this.timeout));
}
}
}
}
}
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