[erlang-questions] OTP.NET Error

Matt Williamson <>
Sat Oct 4 17:21:36 CEST 2008


Yep, that did it. Спасибо!

On Fri, Oct 3, 2008 at 10:38 PM, Serge Aleynikov <> wrote:

> I took a quick look at your code and see that you are doing this on every
> button click which is wrong:
>
>        OtpSelf self = new OtpSelf("", "abc123");
>        OtpPeer server = new OtpPeer("");
>        OtpConnection connection = server.connect(self);
>
> Move that to form initialization function, and try again.  I guess what's
> going on is that OtpAbstractNode doesn't implement proper destruction and
> freeing resources (the socket connection), and as a result on every button
> click you are trying to set up more than one connection with the Erlang
> server node, which is not allowed, so the server drops the second and
> following connection attempts.
>
> Serge
>
>
> Matt Williamson wrote:
>
>> I'm trying out a simple OTP.NET test and it works great for the first
>> call,
>> but any subsequent calls result in the following exception:
>> System.IO.IOException was unhandled
>>  Message="Peer replied with status 'alive' instead of 'ok'"
>>  Source="Otp"
>>  StackTrace:
>>       at Otp.AbstractConnection.recvStatus() in C:\Documents and
>> Settings\Administrator\Desktop\jungerl\lib\otp.net
>> \Otp\AbstractConnection.cs:line
>> 1455
>>       at Otp.AbstractConnection.doConnect(Int32 port) in C:\Documents and
>> Settings\Administrator\Desktop\jungerl\lib\otp.net
>> \Otp\AbstractConnection.cs:line
>> 1018
>>       at Otp.AbstractConnection..ctor(OtpLocalNode self, OtpPeer other) in
>> C:\Documents and
>> Settings\Administrator\Desktop\jungerl\lib\otp.net
>> \Otp\AbstractConnection.cs:line
>> 226
>>       at Otp.OtpConnection..ctor(OtpSelf self, OtpPeer other) in
>> C:\Documents and
>> Settings\Administrator\Desktop\jungerl\lib\otp.net
>> \Otp\OtpConnection.cs:line
>> 84
>>       at Otp.OtpPeer.connect(OtpSelf self) in C:\Documents and
>> Settings\Administrator\Desktop\jungerl\lib\otp.net\Otp\OtpPeer.cs:line 67
>>       at ErlTestClient.Form1.button1_Click(Object sender, EventArgs e) in
>> C:\Documents and Settings\Administrator\My
>> Documents\Projects\ErlTestClient\ErlTestClient\Form1.cs:line 25
>>       at System.Windows.Forms.Control.OnClick(EventArgs e)
>>       at System.Windows.Forms.Button.OnClick(EventArgs e)
>>       at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
>>       at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons
>> button, Int32 clicks)
>>       at System.Windows.Forms.Control.WndProc(Message& m)
>>       at System.Windows.Forms.ButtonBase.WndProc(Message& m)
>>       at System.Windows.Forms.Button.WndProc(Message& m)
>>       at
>> System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
>>       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&
>> m)
>>       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd,
>> Int32 msg, IntPtr wparam, IntPtr lparam)
>>       at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&
>> msg)
>>       at
>>
>> System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32
>> dwComponentID, Int32 reason, Int32 pvLoopData)
>>       at
>> System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32
>> reason, ApplicationContext context)
>>       at
>> System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32
>> reason,
>> ApplicationContext context)
>>       at System.Windows.Forms.Application.Run(Form mainForm)
>>       at ErlTestClient.Program.Main() in C:\Documents and
>> Settings\Administrator\My
>> Documents\Projects\ErlTestClient\ErlTestClient\Program.cs:line 17
>>       at System.AppDomain.nExecuteAssembly(Assembly assembly, String[]
>> args)
>>       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence
>> assemblySecurity, String[] args)
>>       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
>>       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
>>       at System.Threading.ExecutionContext.Run(ExecutionContext
>> executionContext, ContextCallback callback, Object state)
>>       at System.Threading.ThreadHelper.ThreadStart()
>>
>>
>> You can view my source at http://paste.lisp.org/display/67861 and
>> http://paste.lisp.org/display/67862
>>
>> Erlang is v5.6.3 on windows and I'm running VS2005.
>>
>> Please help :)
>>
>>
>>
>> ------------------------------------------------------------------------
>>
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>> 
>> http://www.erlang.org/mailman/listinfo/erlang-questions
>>
>
>
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