public OpenLinkAsyncResult(Listener listener, AmqpLink link, AsyncCallback callback, object state)
: base(callback, state)
{
this.Link = link;
string node = link.IsReceiver ? ((Target)link.Settings.Target).Address.ToString() : ((Source)link.Settings.Source).Address.ToString();
LinkAsyncResult result = null;
if (listener.TryMatchLink(node, false, link.IsReceiver, (r) => { return(this); }, out result))
{
result.Signal(link);
this.Complete(true);
}
}
// Find a matching client side link; otherwise wait
AmqpLink AcceptLink(string node, bool isReceiver, Action <AmqpMessage> messageListener)
{
LinkAsyncResult result = null;
if (this.TryMatchLink(node, true, isReceiver, (r) => { return(new AcceptLinkAsyncResult(r, messageListener, null, null)); }, out result))
{
if (isReceiver)
{
ReceivingAmqpLink link = (ReceivingAmqpLink)result.Link;
link.RegisterMessageListener(messageListener);
}
result.Signal(null);
return(result.Link);
}
return(AcceptLinkAsyncResult.End(result));
}
bool TryMatchLink(string node, bool fromClient, bool isReceiver, Func<bool, LinkAsyncResult> requestCreator, out LinkAsyncResult result)
{
result = null;
bool matched = false;
lock (this.syncRoot)
{
List<LinkAsyncResult> requests;
if (!this.nodes.TryGetValue(node, out requests))
{
requests = new List<LinkAsyncResult>();
this.nodes.Add(node, requests);
}
for (int i = 0; i < requests.Count; ++i)
{
result = requests[i];
if (result.Match(fromClient, isReceiver))
{
requests.RemoveAt(i);
matched = true;
break;
}
}
if (!matched)
{
result = requestCreator(isReceiver);
requests.Add(result);
}
}
return matched;
}
bool TryMatchLink(string node, bool fromClient, bool isReceiver, Func <bool, LinkAsyncResult> requestCreator, out LinkAsyncResult result)
{
result = null;
bool matched = false;
lock (this.syncRoot)
{
List <LinkAsyncResult> requests;
if (!this.nodes.TryGetValue(node, out requests))
{
requests = new List <LinkAsyncResult>();
this.nodes.Add(node, requests);
}
for (int i = 0; i < requests.Count; ++i)
{
result = requests[i];
if (result.Match(fromClient, isReceiver))
{
requests.RemoveAt(i);
matched = true;
break;
}
}
if (!matched)
{
result = requestCreator(isReceiver);
requests.Add(result);
}
}
return(matched);
}
