/// <summary>
/// Fires the Error event.
/// </summary>
/// <param name="e">Event arguments</param>
protected internal void OnError(ZyanErrorEventArgs e)
{
if (Error != null)
{
Error(this, e);
}
}
/// <summary>
/// Intercepts the method that is specified in the provided IMessage and/or invokes it on the remote object.
/// </summary>
/// <remarks>This method is called by <see cref="CallInterceptionData"/>.MakeRemoteCall() method.</remarks>
/// <param name="methodCallMessage">Remoting <see cref="IMethodCallMessage"/> that contains information about the method call.</param>
/// <param name="allowInterception">Specifies whether call interception is allowed.</param>
/// <returns>The message returned by the invoked method, containing the return value and any out or ref parameters.</returns>
private IMessage InterceptAndInvoke(IMethodCallMessage methodCallMessage, bool allowInterception)
{
try
{
var methodInfo = (MethodInfo)methodCallMessage.MethodBase;
return
(HandleCallInterception(methodCallMessage, allowInterception) ??
HandleLocalInvocation(methodCallMessage, methodInfo) ??
HandleEventSubscription(methodCallMessage, methodInfo) ??
HandleEventUnsubscription(methodCallMessage, methodInfo) ??
HandleLinqQuery(methodCallMessage, methodInfo) ??
HandleRemoteInvocation(methodCallMessage, methodInfo));
}
catch (Exception ex)
{
if (_connection.ErrorHandlingEnabled)
{
ZyanErrorEventArgs e = new ZyanErrorEventArgs()
{
Exception = ex,
RemotingMessage = methodCallMessage,
ServerComponentType = _interfaceType,
RemoteMemberName = methodCallMessage.MethodName
};
_connection.OnError(e);
switch (e.Action)
{
case ZyanErrorAction.ThrowException:
throw;
case ZyanErrorAction.Retry:
return(Invoke(methodCallMessage));
case ZyanErrorAction.Ignore:
return(new ReturnMessage(null, null, 0, methodCallMessage.LogicalCallContext, methodCallMessage));
}
}
throw;
}
}
static void Connection_Error(object sender, ZyanErrorEventArgs e)
{
if (e.Exception is SocketException || e.Exception is InvalidSessionException || e.Exception is RemotingException)
{
int retryCount = 0;
bool problemSolved = false;
while (!problemSolved && retryCount < 10)
{
Thread.Sleep(5000);
problemSolved = Connection.Reconnect();
retryCount++;
}
if (problemSolved)
e.Action = ZyanErrorAction.Retry;
else
e.Action = ZyanErrorAction.ThrowException;
}
else
e.Action = ZyanErrorAction.ThrowException;
}
static void ConnectionErrorHandler(object sender, ZyanErrorEventArgs args)
{
var exception = args.Exception.InnerException ?? args.Exception;
Console.WriteLine("Exception caught: {0}", exception.Message);
Console.WriteLine("Retry (default)? Ignore? Throw exception?");
var c = char.ToUpperInvariant(Console.ReadKey(true).KeyChar);
switch (c)
{
case 'I':
args.Action = ZyanErrorAction.Ignore;
break;
case 'T':
args.Action = ZyanErrorAction.ThrowException;
break;
default:
args.Action = ZyanErrorAction.Retry;
break;
}
}
/// <summary>
/// Intercepts the method that is specified in the provided IMessage and/or invokes it on the remote object.
/// </summary>
/// <remarks>This method is called by <see cref="CallInterceptionData"/>.MakeRemoteCall() method.</remarks>
/// <param name="methodCallMessage">Remoting <see cref="IMethodCallMessage"/> that contains information about the method call.</param>
/// <param name="allowInterception">Specifies whether call interception is allowed.</param>
/// <returns>The message returned by the invoked method, containing the return value and any out or ref parameters.</returns>
private IMessage InterceptAndInvoke(IMethodCallMessage methodCallMessage, bool allowInterception)
{
try
{
var methodInfo = (MethodInfo)methodCallMessage.MethodBase;
return
HandleCallInterception(methodCallMessage, allowInterception) ??
HandleLocalInvocation(methodCallMessage, methodInfo) ??
HandleEventSubscription(methodCallMessage, methodInfo) ??
HandleEventUnsubscription(methodCallMessage, methodInfo) ??
HandleLinqQuery(methodCallMessage, methodInfo) ??
HandleRemoteInvocation(methodCallMessage, methodInfo);
}
catch (Exception ex)
{
if (_connection.ErrorHandlingEnabled)
{
ZyanErrorEventArgs e = new ZyanErrorEventArgs()
{
Exception = ex,
RemotingMessage = methodCallMessage,
ServerComponentType = _interfaceType,
RemoteMemberName = methodCallMessage.MethodName
};
_connection.OnError(e);
switch (e.Action)
{
case ZyanErrorAction.ThrowException:
throw;
case ZyanErrorAction.Retry:
return Invoke(methodCallMessage);
case ZyanErrorAction.Ignore:
return new ReturnMessage(null, null, 0, methodCallMessage.LogicalCallContext, methodCallMessage);
}
}
throw;
}
}
/// <summary>
/// Fires the Error event.
/// </summary>
/// <param name="e">Event arguments</param>
protected internal void OnError(ZyanErrorEventArgs e)
{
Error?.Invoke(this, e);
}
