I am using SignalR to send messages back to a browser about a long running process. I am using the System.Threading.ManualResetEventSlim to run in a separate thread. This is the error:
w3wp.exe Error: 0 : SignalR exception thrown by Task: System.AggregateException: One or
more errors occurred. ---> System.Web.HttpException: The remote host closed the
connection. The error code is 0x80070057.
at System.Web.Hosting.IIS7WorkerRequest.RaiseCommunicationError(Int32 result, Boolean
throwOnDisconnect)
at System.Web.Hosting.IIS7WorkerRequest.ExplicitFlush()
at System.Web.HttpResponse.Flush(Boolean finalFlush)
at System.Web.HttpResponse.Flush()
at System.Web.HttpResponseWrapper.Flush()
at Microsoft.Owin.Host.SystemWeb.CallStreams.OutputStream.Flush()
at Microsoft.AspNet.SignalR.Owin.ServerResponse.<Flush>b__0()
at Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethod(Action func)
--- End of inner exception stack trace ---
---> (Inner Exception #0) System.Web.HttpException (0x80070057): The remote host closed
the connection. The error code is 0x80070057.
at System.Web.Hosting.IIS7WorkerRequest.RaiseCommunicationError(Int32 result, Boolean
throwOnDisconnect)
at System.Web.Hosting.IIS7WorkerRequest.ExplicitFlush()
at System.Web.HttpResponse.Flush(Boolean finalFlush)
at System.Web.HttpResponse.Flush()
at System.Web.HttpResponseWrapper.Flush()
at Microsoft.Owin.Host.SystemWeb.CallStreams.OutputStream.Flush()
at Microsoft.AspNet.SignalR.Owin.ServerResponse.<Flush>b__0()
at Microsoft.AspNet.SignalR.TaskAsyncHelper.FromMethod(Action func)<---
I saw some similar errors on the SignalR issues tracker. There was something about using:
TaskScheduler.UnobservedTaskException += new EventHandler((s, arg) =>
{
arg.SetObserved();
((AggregateException)arg.Exception).Handle(ex =>
{
// Do something with ex (log or ignore...)
return true;
});
}
Related
This is the method where I am requesting post request but I am getting following error Basically I am consuming post method in the client side code **
error
** System.AggregateException
HResult=0x80131500
Message=One or more errors occurred.
Source=mscorlib
StackTrace:
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at System.Threading.Tasks.Task`1.get_Result()
at Client.team.AddTeam() in K:\LiveScoreSystemWebApi\Client\team.aspx.cs:line 259
at Client.team.GoBtn_Click(Object sender, EventArgs e) in K:\LiveScoreSystemWebApi\Client\team.aspx.cs:line 51
This exception was originally thrown at this call stack:
[External Code]
Inner Exception 1:
HttpRequestException: An error occurred while sending the request.
Inner Exception 2:
WebException: The underlying connection was closed: An unexpected error occurred on a receive.
Inner Exception 3:
IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
Inner Exception 4:
SocketException: An existing connection was forcibly closed by the remote host
**
----------
Code
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:44382/api/Team");
MediaTypeFormatter[] formatter = new MediaTypeFormatter[] { new JsonMediaTypeFormatter() };
HttpContent content = new ObjectContent<Team>(team1, formatter[0]);
HttpResponseMessage response = client.PostAsync(client.BaseAddress +"/insertTeam",content).Result;
Event Viewer on my workstation have the following error log:
ERROR NServiceBus.Transports.Msmq.MsmqDequeueStrategy [(null)] - Error in receiving messages.
System.Transactions.TransactionAbortedException: The transaction has aborted. ---> System.Transactions.TransactionManagerCommunicationException: Communication with the underlying transaction manager has failed. ---> System.Runtime.InteropServices.COMException: The Transaction Manager is not available. (Exception from HRESULT: 0x8004D01B)
at System.Transactions.Oletx.IDtcProxyShimFactory.ConnectToProxy(String nodeName, Guid resourceManagerIdentifier, IntPtr managedIdentifier, Boolean& nodeNameMatches, UInt32& whereaboutsSize, CoTaskMemHandle& whereaboutsBuffer, IResourceManagerShim& resourceManagerShim)
at System.Transactions.Oletx.DtcTransactionManager.Initialize()
--- End of inner exception stack trace ---
at System.Transactions.Oletx.OletxTransactionManager.ProxyException(COMException comException)
at System.Transactions.Oletx.DtcTransactionManager.Initialize()
at System.Transactions.Oletx.DtcTransactionManager.get_ProxyShimFactory()
at System.Transactions.Oletx.OletxTransactionManager.CreateTransaction(TransactionOptions properties)
at System.Transactions.TransactionStatePromoted.EnterState(InternalTransaction tx)
--- End of inner exception stack trace ---
at System.Transactions.TransactionStateAborted.CheckForFinishedTransaction(InternalTransaction tx)
at System.Transactions.Transaction.Promote()
at System.Transactions.TransactionInterop.ConvertToOletxTransaction(Transaction transaction)
at System.Transactions.TransactionInterop.GetDtcTransaction(Transaction transaction)
at System.Messaging.MessageQueue.StaleSafeReceiveMessage(UInt32 timeout, Int32 action, MQPROPS properties, NativeOverlapped* overlapped, ReceiveCallback receiveCallback, CursorHandle cursorHandle, IntPtr transaction)
at System.Messaging.MessageQueue.ReceiveCurrent(TimeSpan timeout, Int32 action, CursorHandle cursor, MessagePropertyFilter filter, MessageQueueTransaction internalTransaction, MessageQueueTransactionType transactionType)
at System.Messaging.MessageQueue.Receive(TimeSpan timeout, MessageQueueTransactionType transactionType)
at NServiceBus.Transports.Msmq.MsmqDequeueStrategy.TryReceiveMessage(Func`1 receive, Message& message) in C:\BuildAgent\work\3206e2123f54fce4\src\NServiceBus.Core\Transports\Msmq\MsmqDequeueStrategy.cs:line 332
Facts:
Distributed Transaction Coordinator (DTC) Component Service ==> DTC Enabled
Distributed Transaction Coordinator (DTC) Service ==> Running (referenced to Answered Stack Oveflow Question)
Realtek Audio Universal Service ==> Disabled (as per reference in Fix for 0x8004d01b)
Can anyone recommend a direction on how to check/troubleshoot the cause of the issue?
After long ardous hours, the issue I encountered boils down to permission issue. The services involved in DTC which uses credentials of LocalSystem do not have enough permission and blocked by company-imposed policy implemented on the server.
Unfortunately, I only managed to find an alternative or workaround by using account that have enough permissions to operate and manage the services involved (including custom services).
#gnud - Thanks a lot for your inputs giving me a direction for investigation and that help me continue move forward on my investigation. I appreciate the help. Thanks.
I'm using ReCAPTCHA in MVC4 application hosted in Azure cloud for a simple website with one registration form. We have about 100-120 successful registrations per hour currently. The problem is that I have hundreds of System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host errors in the logs, and then number keeps growing fast:
System.Net.Http.HttpRequestException: An error occurred while sending the request. --->
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. --->
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. --->
System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
--- End of inner exception stack trace ---
at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
at System.Net.Connection.ReadCallback(IAsyncResult asyncResult)
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)
at System.Net.Http.HttpClientHandler.GetResponseCallback(IAsyncResult ar)
--- End of inner exception stack trace ---
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at My.Web.Infrastructure.Filters.ValidateReCaptchaAttribute.OnActionExecuting(ActionExecutingContext filterContext) in My.Web\Infrastructure\Filters\ValidateReCaptchaAttribute.cs:line 49 --->
(Inner Exception #0) System.Net.Http.HttpRequestException: An error occurred while sending the request. --->
System.Net.WebException: The underlying connection was closed: An unexpected error occurred on a receive. --->
System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. --->
System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host
at System.Net.Sockets.NetworkStream.EndRead(IAsyncResult asyncResult)
--- End of inner exception stack trace ---
I use attribute to validate captcha as follows (i deleted some non-important details):
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class ValidateReCaptchaAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
var formValues = new[]
{
new KeyValuePair<string, string>("privatekey", ConfigurationProvider.ReCaptchaPrivateKey),
new KeyValuePair<string, string>("remoteip", remoteIp.ToString()),
new KeyValuePair<string, string>("challenge", challengeField),
new KeyValuePair<string, string>("response", responseField)
};
try
{
using (var client = HttpClientFactory.Create())
using (var data = new FormUrlEncodedContent(formValues))
using (var response = client.PostAsync("http://www.google.com/recaptcha/api/verify", data).Result)
{
var responseString = response.Content.ReadAsStringAsync().Result;
if (responseString.StartsWith("true") == false)
{
modelState.AddModelError(string.Empty, DisplayName.Validation_CaptchaMissing);
}
}
}
catch (Exception ex)
{
log4net.LogManager.GetLogger("WebLogger").Error(string.Format("ValidateReCaptcha failed on {0}/{1}. {2}", controller, action, formValuesRaw), ex);
modelState.AddModelError(string.Empty, DisplayName.Validation_CaptchaMissing);
}
}
}
it fails on var response = client.PostAsync() line. Not always. I was not able to reproduce it locally. But it fails pretty much for every user of the website - sometimes once, sometimes twice, sometimes more. Eventually they are able to register - as I said, I'm seeing more than 100 registrations per hour - but that results in 300-400 errors in the log table for that hour. I tried to register myself - and though I was 100% sure that I entered captcha correctly, I got validation error.
Any ideas? Does my validation attribute look okay? what can be other reasons?
Ah!.. fixed it by removing
using (var client = HttpClientFactory.Create())
line and creating HttpClient as singleton:
public class ValidateReCaptchaAttribute : ActionFilterAttribute
{
private static readonly HttpClient HttpClient = new HttpClient();
// rest of the code goes here...
as suggested by this SO answer
I am making a pretty long query to Neo4j database using Neo4jClient and getting an exception which occurs pretty randomly. How to fix this?
System.AggregateException: One or more errors occurred. ---> System.AggregateException: One or more errors occurred. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Neo4jClient.GraphClient.<>c__DisplayClass3.<SendHttpRequestAsync>b__2(Task`1 requestTask) in c:\TeamCity\buildAgent\work\f1c4cf3efbf1b05e\Neo4jClient\GraphClient.cs:line 149
at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Neo4jClient.GraphClient.<>c__DisplayClass1b`1.<Neo4jClient.IRawGraphClient.ExecuteGetCypherResultsAsync>b__1a(Task`1 responseTask) in c:\TeamCity\buildAgent\work\f1c4cf3efbf1b05e\Neo4jClient\GraphClient.cs:line 745
at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
---> (Inner Exception #0) System.AggregateException: One or more errors occurred. ---> System.Threading.Tasks.TaskCanceledException: A task was canceled.
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification)
at Neo4jClient.GraphClient.<>c__DisplayClass3.<SendHttpRequestAsync>b__2(Task`1 requestTask) in c:\TeamCity\buildAgent\work\f1c4cf3efbf1b05e\Neo4jClient\GraphClient.cs:line 149
at System.Threading.Tasks.ContinuationResultTaskFromResultTask`2.InnerInvoke()
at System.Threading.Tasks.Task.Execute()
---> (Inner Exception #0) System.Threading.Tasks.TaskCanceledException: A task was canceled.<---
<---
This is being tracked as an issue at https://bitbucket.org/Readify/neo4jclient/issue/70/taskcancelledexception
Diagnosis and eventual 'official' resolution will be posted there.
It took me hours to identify this issue and fix it.
[edit]: Don't use Neo4jClient.GraphClient, use Neo4jClient.BoltGraphClient - both derive from IGraphClient - the BoltGraphClient doesn't use an HttpClient behind the scenes and is way faster and less memory intensive.
var BoltGraphClient = new Neo4jClient.BoltGraphClient(url,username,password);
my old answer + story:
I'm putting a ton of Cypher queries into a List<Task> and executing them via query.ExecuteWithoutResultsAsync(). The Neo4j server can only handle so much at a time and will put the request in a queue.
I've confirmed that the TaskCanceledException gets thrown after 100 seconds, which is the default timeout of HttpClient.
After reading the documentation, I've figured out how to specify an infinite timespan during the initialization of the graphclient. Hope this will save you time.
var httpClientWrapper = new Neo4jClient.HttpClientWrapper(
username,
password,
new System.Net.Http.HttpClient() {
Timeout = System.Threading.Timeout.InfiniteTimeSpan
});
var graphClient = new Neo4jClient.GraphClient(new Uri(url), httpClientWrapper);
I'm connecting to a JMS queue. The queue is hosted by WebSphere Application Server (version 8.0.0.5), using SIBus.
I have a simple program to reproduce some problematic behavior, it is written in C# and uses XMS (IBM's .NET API) to connect to the queue. Note: I obtained the IBM.XMS dlls from here: MQC71: WebSphere MQ V7.1 Clients
The scenario is this:
run the program (use an empty queue, so it sits waiting on a blocking Receive call)
disconnect network (unplug ethernet)
after a few minutes, the Receive call throws an exception
the program attempts to connect anew
this fails due to the network being down
...let it loop a bit to verify this error keeps occurring
restore the network (plug in ethernet)
the same error continues to occur (verified with WireShark that no network traffic occurs during the connectionFactory.CreateConnection() call)
So, the question is: why does the CreateConnection() call do nothing (does not send any packets) but fail?
using IBM.XMS;
using System;
namespace SimpleTest
{
class Program
{
static void Main(string[] args)
{
while (true)
{
try
{
string queueURI = "queue://your.details.GoHereDearReader";
string providerEndpoint = "1.2.3.4:1234";
string targetTransportChain = "InboundBasicMessaging";
string busName = "some_bus_name";
XMSFactoryFactory factoryFactory = XMSFactoryFactory.GetInstance(XMSC.CT_WPM);
IConnectionFactory connectionFactory = factoryFactory.CreateConnectionFactory();
connectionFactory.SetStringProperty(XMSC.WPM_PROVIDER_ENDPOINTS, providerEndpoint);
connectionFactory.SetStringProperty(XMSC.WPM_TARGET_TRANSPORT_CHAIN, targetTransportChain);
connectionFactory.SetStringProperty(XMSC.WPM_BUS_NAME, busName);
Log("Connecting...");
using (var connection = connectionFactory.CreateConnection())
{
using (var session = connection.CreateSession(false, AcknowledgeMode.AutoAcknowledge))
{
using (var destination = session.CreateQueue(queueURI))
{
destination.SetIntProperty(XMSC.DELIVERY_MODE, XMSC.DELIVERY_NOT_PERSISTENT);
connection.Start();
using (IMessageConsumer consumer = session.CreateConsumer(destination))
{
Log("Receiving...");
IMessage recvMsg = consumer.Receive();
Log("recvMsg:" + recvMsg);
}
}
}
}
}
catch (Exception e)
{
Log(e.ToString());
}
Log("Sleeping some before consuming more...");
System.Threading.Thread.Sleep(10 * 1000);
}//while
}//Main
static void Log(string text)
{
Console.WriteLine(DateTime.UtcNow.ToString("HH:mm:ss.fff") + "-------------------------- " + text);
}
}
}
And some output:
16:38:19.483-------------------------- Connecting...
16:38:19.936-------------------------- Receiving...
16:43:31.952-------------------------- IBM.XMS.XMSException: EXCEPTION_RECEIVED_CWSIA0022
EXCEPTION_RECEIVED_CWSIA0022.explanation
EXCEPTION_RECEIVED_CWSIA0022.useraction
at IBM.XMS.Impl.Connection.Dispose(Boolean disposing)
at IBM.XMS.Impl.Connection.Dispose()
at SimpleTest.Program.Main(String[] args) in c:\Users\Administrator\Documents\Visual Studio Projects\TestJMSDequeue\SimpleTest\Program.cs:line 43
Linked Exception : IBM.XMS.SIB.JFAP.JFapConversationClosedException: Exception of type 'IBM.XMS.SIB.JFAP.JFapConversationClosedException' was thrown.
at IBM.XMS.SIB.JFAP.ConversationImpl.Send(IByteBuffer[] data, JFAPSegmentType segmentType, UInt16 requestNumber, IoPriority priority, Boolean pooledBufferHint, IReceiveListener recvListener, ISendListener sendListener, Object state)
at IBM.XMS.SIB.JFAP.ConversationImpl.RequestReplyExchange(IByteBuffer[] data, JFAPSegmentType segmentType, UInt16 requestNumber, IoPriority priority, Boolean pooledBufferHint)
at IBM.XMS.SIB.JFAP.ConversationImpl.RequestReplyExchange(IByteBuffer data, JFAPSegmentType segmentType, UInt16 requestNumber, IoPriority priority, Boolean pooledBufferHint)
at IBM.XMS.SIB.Comms.Client.JFAPCommunicator.RequestReplyExchange(IByteBuffer data, JFAPSegmentType sendSegType, MessagePriority priority, Boolean canPoolOnReceive)
at IBM.XMS.SIB.Comms.Client.ConnectionProxy.Close()
at IBM.XMS.Impl.Connection.Dispose(Boolean disposing)
16:43:31.952-------------------------- Sleeping some before consuming more...
16:43:41.967-------------------------- Connecting...
Exception : System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
FFDC to xmsffdc8416_2013.03.08T10.43.41.967444.txt
Exception : IBM.XMS.Formats.MFP.MessageEncodeFailedException: Exception of type 'IBM.XMS.Formats.MFP.MessageEncodeFailedException' was thrown. ---> System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
--- End of inner exception stack trace ---
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
at IBM.XMS.Formats.MFP.SIB.TrmFirstContactMessageImpl.Encode(Object connection)
at IBM.XMS.SIB.Trm.ClientBootstrapHandler.Connect(IClientConnection clientConnection)
FFDC to xmsffdc8416_2013.03.08T10.43.41.983044.txt
16:43:41.983-------------------------- IBM.XMS.XMSException: EXCEPTION_RECEIVED_CWSIA0241
EXCEPTION_RECEIVED_CWSIA0241.explanation
EXCEPTION_RECEIVED_CWSIA0241.useraction
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection()
at SimpleTest.Program.Main(String[] args) in c:\Users\Administrator\Documents\Visual Studio Projects\TestJMSDequeue\SimpleTest\Program.cs:line 26
Linked Exception : IBM.XMS.Core.SIResourceException: CWSIT0006E: It is not possible to connect to bus your_bus_name_here because the following bootstrap servers could not be contacted 1.2.3.4:1234:BootstrapBasicMessaging and the following bootstrap servers returned an error condition . See previous messages for the reason for each bootstrap server failure.
The client cannot connect to the bus. This situation may be due to configuration problems, network problems or it may be that none of the required bootstrap servers or messaging engines are currently available.
Ensure that the network is working correctly and that the required bootstrap servers and messaging engines are available. ---> IBM.XMS.Core.SIConnectionLostException: Exception of type 'IBM.XMS.Core.SIConnectionLostException' was thrown.
at IBM.XMS.SIB.Comms.Client.ClientSideConnection.Connect(ConnectionProperties cp, IClientComponentHandshake cch, SICoreConnectionProperties siProps)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
--- End of inner exception stack trace ---
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.CreateConnection(Credentials credentials, SICoreConnectionProperties connectionProperties)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactory.CreateConnection(String username, String password, SICoreConnectionProperties connectionProperties)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
16:43:41.983-------------------------- Sleeping some before consuming more...
16:43:51.998-------------------------- Connecting...
Exception : System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
FFDC to xmsffdc8416_2013.03.08T10.43.51.998262.txt
Exception : IBM.XMS.Formats.MFP.MessageEncodeFailedException: Exception of type 'IBM.XMS.Formats.MFP.MessageEncodeFailedException' was thrown. ---> System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
--- End of inner exception stack trace ---
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
at IBM.XMS.Formats.MFP.SIB.TrmFirstContactMessageImpl.Encode(Object connection)
at IBM.XMS.SIB.Trm.ClientBootstrapHandler.Connect(IClientConnection clientConnection)
FFDC to xmsffdc8416_2013.03.08T10.43.51.998262.txt
16:43:51.998-------------------------- IBM.XMS.XMSException: EXCEPTION_RECEIVED_CWSIA0241
EXCEPTION_RECEIVED_CWSIA0241.explanation
EXCEPTION_RECEIVED_CWSIA0241.useraction
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection()
at SimpleTest.Program.Main(String[] args) in c:\Users\Administrator\Documents\Visual Studio Projects\TestJMSDequeue\SimpleTest\Program.cs:line 26
Linked Exception : IBM.XMS.Core.SIResourceException: CWSIT0006E: It is not possible to connect to bus your_bus_name_here because the following bootstrap servers could not be contacted 1.2.3.4:1234:BootstrapBasicMessaging and the following bootstrap servers returned an error condition . See previous messages for the reason for each bootstrap server failure.
The client cannot connect to the bus. This situation may be due to configuration problems, network problems or it may be that none of the required bootstrap servers or messaging engines are currently available.
Ensure that the network is working correctly and that the required bootstrap servers and messaging engines are available. ---> IBM.XMS.Core.SIConnectionLostException: Exception of type 'IBM.XMS.Core.SIConnectionLostException' was thrown.
at IBM.XMS.SIB.Comms.Client.ClientSideConnection.Connect(ConnectionProperties cp, IClientComponentHandshake cch, SICoreConnectionProperties siProps)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
--- End of inner exception stack trace ---
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.CreateConnection(Credentials credentials, SICoreConnectionProperties connectionProperties)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactory.CreateConnection(String username, String password, SICoreConnectionProperties connectionProperties)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
16:43:51.998-------------------------- Sleeping some before consuming more...
16:44:02.013-------------------------- Connecting...
Exception : System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
FFDC to xmsffdc8416_2013.03.08T10.44.02.013479.txt
Exception : IBM.XMS.Formats.MFP.MessageEncodeFailedException: Exception of type 'IBM.XMS.Formats.MFP.MessageEncodeFailedException' was thrown. ---> System.InvalidOperationException: UniqueLinkObject no seen on handshake.
at IBM.XMS.Formats.MFP.SIB.SchemaManager.SendSchemas(ICommsConnection connection, JMFSchema[] schemas)
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
--- End of inner exception stack trace ---
at IBM.XMS.Formats.MFP.SIB.JsMsgObject.Encode(Object connection)
at IBM.XMS.Formats.MFP.SIB.TrmFirstContactMessageImpl.Encode(Object connection)
at IBM.XMS.SIB.Trm.ClientBootstrapHandler.Connect(IClientConnection clientConnection)
FFDC to xmsffdc8416_2013.03.08T10.44.02.013479.txt
16:44:02.013-------------------------- IBM.XMS.XMSException: EXCEPTION_RECEIVED_CWSIA0241
EXCEPTION_RECEIVED_CWSIA0241.explanation
EXCEPTION_RECEIVED_CWSIA0241.useraction
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection()
at SimpleTest.Program.Main(String[] args) in c:\Users\Administrator\Documents\Visual Studio Projects\TestJMSDequeue\SimpleTest\Program.cs:line 26
Linked Exception : IBM.XMS.Core.SIResourceException: CWSIT0006E: It is not possible to connect to bus your_bus_name_here because the following bootstrap servers could not be contacted 1.2.3.4:1234:BootstrapBasicMessaging and the following bootstrap servers returned an error condition . See previous messages for the reason for each bootstrap server failure.
The client cannot connect to the bus. This situation may be due to configuration problems, network problems or it may be that none of the required bootstrap servers or messaging engines are currently available.
Ensure that the network is working correctly and that the required bootstrap servers and messaging engines are available. ---> IBM.XMS.Core.SIConnectionLostException: Exception of type 'IBM.XMS.Core.SIConnectionLostException' was thrown.
at IBM.XMS.SIB.Comms.Client.ClientSideConnection.Connect(ConnectionProperties cp, IClientComponentHandshake cch, SICoreConnectionProperties siProps)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
--- End of inner exception stack trace ---
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.Bootstrap(Credentials credentials, SICoreConnectionProperties connectionProperties, ClientAttachProperties cap)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactoryImpl.CreateConnection(Credentials credentials, SICoreConnectionProperties connectionProperties)
at IBM.XMS.SIB.Trm.TrmSICoreConnectionFactory.CreateConnection(String username, String password, SICoreConnectionProperties connectionProperties)
at IBM.XMS.Impl.ConnectionFactory.CreateConnection(String userName, String password)
16:44:02.013-------------------------- Sleeping some before consuming more...
Note that in the above output I unplugged the network shortly after "Receiving..." and plugged it in again at 16:43:52, but the errors continued after that until I killed the program.
It reads like the ConnectionFactory does not reset it's state properly when the network becomes available again.
I have scoured the reference manual for any hint of a reset function on the factory - but havn't found one.
I would try this however: Move the GetInstance(...) and createConnectionFactory() out of the loop, as well as the SetStringProperty() lines.
If that doesn't work I cannot see why your client would not work.
Have you considered if this is a problem with the server? Which ethernet cable did you unplug? the one connected to the client or the server? If it was the server, does the same problem occur when you unplug the client cable?
If you restart the program, will it work then?
I know this is an old post, but maybe it will be still helpful.
You receive this error after you created 65.535 connections. It doesn't matter if you close the connection / dispose the object.
I see the following solutions:
1.) You can either create a connection once and reuse the connection for all your operations on the queue, until the connection breaks. Then you have to do a reconnect. (yes that's bad and against the common patterns. I wouldn't advice to do this)
2.) There is a bugfix for the version 8.0.0.6 available. EDIT: APAR #(IJ01244)
I don't know yet when it will included into future releases.
I guess you can contact the IBM support and refer to this PMR ID to receive an updated version of the IBM.XMS.SIB.dll
Hope this helps.