public async Task <IHttpActionResult> ReconnectAndInvoke(string connectionId, string hubName, string methodName, [FromBody] HubNamesAndArguments hubNamesAndArguments)
{
Session session;
bool sessionRetrieved;
sessionManagementLock.EnterReadLock();
try
{
sessionRetrieved = sessions.TryGetValue(connectionId, out session);
}
finally
{
sessionManagementLock.ExitReadLock();
}
var hubMethodInvocation = new HubMethodInvocation
{
Arguments = hubNamesAndArguments.Arguments,
Hub = hubName,
Method = methodName
};
if (!sessionRetrieved)
{
try
{
session = await PerformConnect(hubNamesAndArguments.HubNames, connectionId);
}
catch (ArgumentOutOfRangeException)
{
return(NotFound());
}
return(Ok(new
{
ConnectionId = session.ConnectionId,
ReturnValue = await ExecuteHubMethodInvocation(session, Request, hubMethodInvocation)
}));
}
if (!session.Hubs.Keys.OrderBy(n => n).SequenceEqual(hubNamesAndArguments.HubNames.OrderBy(n => n), StringComparer.OrdinalIgnoreCase))
{
return(Conflict());
}
return(Ok(new
{
Events = GetEvents(session),
ReturnValue = await ExecuteHubMethodInvocation(session, Request, hubMethodInvocation)
}));
}
static async Task <object> ExecuteHubMethodInvocation(Session session, HttpRequestMessage requestMessage, HubMethodInvocation invocation)
{
object invocationResult = null;
ReflectedHub reflectedHub;
if (!Hubs.TryGetValue(invocation.Hub, out reflectedHub))
{
invocationResult = new { Error = "Hub not found" }
}
;
else
{
IReadOnlyDictionary <int, Tuple <Type, Type[], FastMethodInfo> > overloads;
if (!reflectedHub.MethodNames.TryGetValue(invocation.Method, out overloads))
{
invocationResult = new { Error = "Hub method not found" }
}
;
else
{
Tuple <Type, Type[], FastMethodInfo> overload;
if (!overloads.TryGetValue(invocation.Arguments?.Count ?? 0, out overload))
{
invocationResult = new { Error = "Hub method not found" }
}
;
else
{
var argumentsList = new List <object>();
var p = -1;
if (invocation.Arguments != null)
{
foreach (var child in invocation.Arguments.Children())
{
argumentsList.Add(child.ToObject(overload.Item2[++p]));
}
}
try
{
using (var hub = Hub.GetHub(requestMessage, invocation.Hub, session))
invocationResult = overload.Item3.Invoke(hub, argumentsList.ToArray());
if (invocationResult != null)
{
var task = invocationResult as Task;
if (task != null)
{
await task.ContinueWith(t =>
{
if (t.IsFaulted)
{
invocationResult = new { Error = string.Format("{0}: {1}", t.Exception.GetType().Name, t.Exception.Message) }
}
;
else
{
var type = t.GetType();
if (type.IsGenericType)
{
invocationResult = taskValueGetters.GetOrAdd(type, CreateTaskValueGetter).Invoke(t);
}
}
});
}
}
}
catch (Exception ex)
{
invocationResult = new { Error = string.Format("{0}: {1}", ex.GetType().Name, ex.Message) };
}
}
}
}
return(invocationResult);
}