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| Problem with C# Channel API Exit for Receive data |
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| lapastina |
 Posted: Sun Dec 16, 2007 6:22 pm Post subject: Problem with C# Channel API Exit for Receive data |
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Newbie
Joined: 16 Dec 2007
Posts: 3
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Hi,
This is my first question on this forum, and my English is not very well. Sorry!!
I have a problem with an test with an API Exit in MQ 6.0 with fix 6.0.2.2.
This is my code:
using System;
using System.Text;
using System.Diagnostics;
using IBM.WMQ;
namespace MQExitReceiveChannel
{
public class MQExitsReceive : MQChannelExit, MQReceiveExit, IMQExitsReceive
{
private ASCIIEncoding ascii = null;
public byte[] ReceiveExit(MQChannelExit channelExitParms, MQChannelDefinition channelDefinition, byte[] dataBuffer, ref int dataOffset, ref int dataLength, ref int dataMaxLength)
{
LogaEvento("Buffer: " + ascii.GetString(dataBuffer), "MQExitsReceive", EventLogEntryType.Warning, true);
return dataBuffer;
}
public void LogaEvento(string Msg, string Source, EventLogEntryType Type, bool boolLog)
{
if (boolLog)
{
System.Diagnostics.EventLog.WriteEntry(Source, Msg, Type);
}
}
}
}
An the configuration in page o Exits in my Receiver Channel is:
MQExitReceiveChannel(MQExitReceiveChannel.MQExitsReceive)
When I try to start a Sender channel that connects with my Receiver channel MQ returns an error:
User exit not valid.
Channel program 'C12345678.SIMULA.1' ended because user exit 'MQExitReceiveChannel(MQExitReceiveChannel.MQExitsReceive)' is not valid.
Ensure that the user exit is specified correctly in the channel definition, and that the user exit program is correct and available.
Please, help me if as possible!
Thanks.
Leandro |
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| jefflowrey |
| Posted: Sun Dec 16, 2007 6:44 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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I think you can only write API exits in C, and not in C#.
(These are much further apart than Microsoft wants you to think they are...)
You might be able to manage C++, but the runtime bindings might cause some difficulties...
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I am *not* the model of the modern major general. |
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| David.Partridge |
| Posted: Mon Dec 17, 2007 1:44 am Post subject: |
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Master
Joined: 28 Jun 2001
Posts: 249
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Usage of C++ in channel exits and in the API exit isn't officially supported. C is of course OK, as is assembler on 390 systems.
On MVS (z/OS), your usage of C is officially constrained to the SPC environment. It is possible, with some care, to use assembler code to set up a persistent C (non-SPC) environment, but this is outside the supported envelope.
C++ can be used with some restrictions (which you'll need to find out the hard way) in channel exits and API exits, but definitely falls into the category of "use at your own risk".
Unless you are highly knowledgeable about how C++ does its stuff and also somewhat of a C++ language lawyer, and have lots of experience with MQ exits in C (or assembler), I'd strongly suggest that you restrict your experiments with exits to the C language on the distributed platforms.
C# is, in my opinion, a step too far.
The usual warnings about exits being "an advanced topic" and to torture test your exits in play-pen environment apply of course.
_________________
Cheers,
David C. Partridge |
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| tleichen |
| Posted: Mon Dec 17, 2007 7:42 am Post subject: |
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Yatiri
Joined: 11 Apr 2005
Posts: 663
Location: Center of the USA
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Since DotNet is another shell that C# runs under, I dare say that, even if it would be possible, it would be foolish and inefficient to write exit code in C#. 
_________________
IBM Certified MQSeries Specialist
IBM Certified MQSeries Developer |
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| RogerLacroix |
| Posted: Mon Dec 17, 2007 8:23 am Post subject: |
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Jedi Knight
Joined: 15 May 2001
Posts: 3253
Location: London, ON Canada
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Hi,
In one of the manuals, (APG ??) you will read that 'CLNTCONN' is the ONLY type of channel that an send/receive/security exit can be written in C#. The same principles apply to Java.
If you require an exit for a Receiver channel then you need to follow the guidelines/information given above.
Regards,
Roger Lacroix
Capitalware Inc.
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Capitalware: Transforming tomorrow into today.
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| lapastina |
| Posted: Mon Dec 17, 2007 3:24 pm Post subject: IBM Documents |
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Newbie
Joined: 16 Dec 2007
Posts: 3
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| jefflowrey |
| Posted: Mon Dec 17, 2007 3:36 pm Post subject: |
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Grand Poobah
Joined: 16 Oct 2002
Posts: 19981
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| lapastina |
| Posted: Tue Dec 18, 2007 3:16 pm Post subject: |
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Newbie
Joined: 16 Dec 2007
Posts: 3
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Oh!
Sorry, but my english is not good! And I don´t read this help complete.
Thank you! |
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