[rabbitmq-discuss] Possible bug when disposing connections in .NET client 2.7.0/1

[Dave Stevens]

I get the same exception with this:

        [Test(Description = "ObjectDispositionException")]
        public void TestFail()
        {
            var cf = new ConnectionFactory
                         {
                             HostName = "10.10.8.96",
                             Port = 5672,
                             RequestedHeartbeat = 2
                         };
            using (var connection = cf.CreateConnection())
            using (var model = connection.CreateModel())
            {
                Thread.Sleep(TimeSpan.FromSeconds(1));
            }
        }

On Thu, Dec 29, 2011 at 2:59 AM, Simone Busoli <simone.busoli at gmail.com> wrote:
>
> Hi Dave, although counterintuitive the documentation of the .NET client states that explicitly. The connection closure/disposal is not idempotent, i.e. you shall not call it twice.
>
> On Dec 29, 2011 1:41 AM, "Dave Stevens" <daverstevens at gmail.com> wrote:
>>
>> I am getting the following exception when disposing a connection. I
>> had previously noticed this when going from RabbitMQ Client 2.5.1 to
>> 2.7.0 which caused me to back out the update. I ended up going to
>> 2.7.1 because I thought I found a shutdown issue in my own code. The
>> exception did not present itself again until I started testing some
>> reconnect logic. I first noticed it again after simply pulling the
>> plug on my network.
>>
>> System.ObjectDisposedException: Cannot access a disposed object.
>> Object name: 'System.Net.Sockets.Socket'.
>> at System.Net.Sockets.Socket.SetSocketOption(SocketOptionLevel
>> optionLevel, SocketOptionName optionName, Object optionValue)
>> at RabbitMQ.Client.Impl.SocketFrameHandler_0_9.Close()
>> at RabbitMQ.Client.Impl.ConnectionBase.FinishClose()
>> at RabbitMQ.Client.Impl.ConnectionBase.HeartbeatWriteLoop()
>> at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
>> at System.Threading.ExecutionContext.runTryCode(Object userData)
>> at
>> System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode
>> code, CleanupCode backoutCode, Object userData)
>> at System.Threading.ExecutionContext.RunInternal(ExecutionContext
>> executionContext, ContextCallback callback, Object state)
>> at System.Threading.ExecutionContext.Run(ExecutionContext
>> executionContext, ContextCallback callback, Object state, Boolean
>> ignoreSyncCtx)
>> at System.Threading.ExecutionContext.Run(ExecutionContext
>> executionContext, ContextCallback callback, Object state)
>> at System.Threading.ThreadHelper.ThreadStart()
>>
>> This code is reproducible consistently with the following:
>>
>> using System;
>> using System.Threading;
>> using NUnit.Framework;
>> using RabbitMQ.Client;
>> using RabbitMQ.Client.Framing.v0_9;
>>
>> namespace BT.ThirdPartyProxy.Functional.Test.FunctionalTests
>> {
>>    [TestFixture]
>>    public class TestingObjectDispositionException
>>    {
>>        [Test(Description = "ObjectDispositionException")]
>>        public void TestFail()
>>        {
>>            var cf = new ConnectionFactory
>>                         {
>>                             HostName = INSERT_IP_HERE,
>>                             Port = 5672,
>>                             RequestedHeartbeat = 2
>>                         };
>>            using (var connection = cf.CreateConnection())
>>            using (var model = connection.CreateModel())
>>            {
>>                Thread.Sleep(TimeSpan.FromSeconds(1));
>>                model.Close(Constants.ReplySuccess, "Goodbye");
>>                connection.Close(Constants.ReplySuccess, "Goodbye");
>>                Thread.Sleep(TimeSpan.FromSeconds(1));
>>            }
>>        }
>>    }
>> }
>>
>>
>> I am using RabbitMQ.Client.dll 2.7.1.0 in .NET 4.0 app on Windows
>> server 2003 going against RabbitMQ 2.7.0 running on Ubuntu.
>>
>> Status of node rabbit at xxx ...
>> [{pid,1344},
>>  {running_applications,
>>     [{rabbitmq_management,"RabbitMQ Management Console","2.7.0"},
>>      {rabbitmq_management_agent,"RabbitMQ Management Agent","2.7.0"},
>>      {amqp_client,"RabbitMQ AMQP Client","2.7.0"},
>>      {rabbit,"RabbitMQ","2.7.0"},
>>      {os_mon,"CPO  CXC 138 46","2.2.5"},
>>      {sasl,"SASL  CXC 138 11","2.1.9.3"},
>>      {rabbitmq_mochiweb,"RabbitMQ Mochiweb Embedding","2.7.0"},
>>      {webmachine,"webmachine","1.7.0-rmq2.7.0-hg"},
>>      {mochiweb,"MochiMedia Web Server","1.3-rmq2.7.0-git"},
>>      {inets,"INETS  CXC 138 49","5.5.2"},
>>      {mnesia,"MNESIA  CXC 138 12","4.4.17"},
>>      {stdlib,"ERTS  CXC 138 10","1.17.3"},
>>      {kernel,"ERTS  CXC 138 10","2.14.3"}]},
>>  {os,{unix,linux}},
>>  {erlang_version,
>>     "Erlang R14B02 (erts-5.8.3) [source] [64-bit] [smp:8:8] [rq:8]
>> [async-threads:30] [kernel-poll:true]\n"},
>>  {memory,
>>     [{total,31177024},
>>      {processes,11828776},
>>      {processes_used,11772888},
>>      {system,19348248},
>>      {atom,1355273},
>>      {atom_used,1339382},
>>      {binary,84928},
>>      {code,14547474},
>>      {ets,1099944}]},
>>  {vm_memory_high_watermark,0.39999999995232727},
>>  {vm_memory_limit,5034326425}]
>> ...done.
>> _______________________________________________
>> rabbitmq-discuss mailing list
>> rabbitmq-discuss at lists.rabbitmq.com
>> https://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss