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Message
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| MrMQ9 |
 Posted: Sun Mar 29, 2009 4:59 pm Post subject: HConn with Binding mode |
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Newbie
Joined: 19 Dec 2008
Posts: 7
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Dear MQ Gurus,
I am using MQ 7.0 in Windows 2003.
One of the application the MQ client running remotely have now moved in to the same machine as the MQ server is running on. This MQ client was running fine with the remote connection when it is not in the MQ server. But now I want to use Binding mode in the local server to make this application directly connect to the MQ manager. However I got error in HConn, the value of the HConn is 1. It looks to me it is not the correct value.
We are using C#.
What is the correct way of using Binding mode so that it returns a correct value of the HConn?
Your help is much appreciated.
Thanks |
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| bruce2359 |
| Posted: Sun Mar 29, 2009 5:39 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| Quote: |
One of the application the MQ client running remotely have now moved in to the same machine as the MQ server is running on. This MQ client was running fine with the remote connection when it is not in the MQ server.
But now I want to use Binding mode in the local server to make this application directly connect to the MQ manager. However I got error in HConn, the value of the HConn is 1. It looks to me it is not the correct value. |
What error exactly? ReasonCode?
| Quote: |
| We are using C#. What is the correct way of using Binding mode so that it returns a correct value of the HConn? |
Did you recompile and rebind with the server bindings libraries?
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| MrMQ9 |
| Posted: Sun Mar 29, 2009 6:10 pm Post subject: |
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Newbie
Joined: 19 Dec 2008
Posts: 7
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Hi,
Thanks for the reply.
The reason code is 2018. And the value of the HConn is always 1 when running remote mode in the local MQ server machine.
Another question is when two clients are running from remote machine, they get the same value of HConn, eg. 5. What is the implication of having the same HConn values for this 2 clients? Our application developers worried about this 2 clients are access the same shared memory when the connection is established.
Thanks.
| bruce2359 wrote: |
| Quote: |
One of the application the MQ client running remotely have now moved in to the same machine as the MQ server is running on. This MQ client was running fine with the remote connection when it is not in the MQ server.
But now I want to use Binding mode in the local server to make this application directly connect to the MQ manager. However I got error in HConn, the value of the HConn is 1. It looks to me it is not the correct value. |
What error exactly? ReasonCode?
| Quote: |
| We are using C#. What is the correct way of using Binding mode so that it returns a correct value of the HConn? |
Did you recompile and rebind with the server bindings libraries? |
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| bruce2359 |
| Posted: Sun Mar 29, 2009 6:19 pm Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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When did you receive the 2018? At MQCONN or MQOPEN? Somewhere else?
Is all your code in this one program? Or are you calling some other program to do MQOPENs or MQGETs?
Post the source-code here.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| MrMQ9 |
| Posted: Sun Mar 29, 2009 8:00 pm Post subject: |
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Newbie
Joined: 19 Dec 2008
Posts: 7
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| bruce2359 wrote: |
When did you receive the 2018? At MQCONN or MQOPEN? Somewhere else?
Is all your code in this one program? Or are you calling some other program to do MQOPENs or MQGETs?
Post the source-code here. |
The process is like this:
C# application -> MQCB (VC++)
The error is occurred when MQCB VC++ function. Because MQCB takes the HConn as parameter, but the value of this HConn is 1 which looks like an initial value before connection established.
So the problem seems that how to get a value HConn value in binding mode.
As previously asked, what do you guys think about two different clients getting the same value of HConn from connecting to the same channel of a MQ server? |
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| fjb_saper |
| Posted: Sun Mar 29, 2009 9:00 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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You should not be passing Hcon too much from one app to the other, have each app open its own connection....
Remember to keep your hcon threadsafe otherwise you are going to run into more trouble than your bargained for.
Have fun 
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MQ & Broker admin |
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| gbaddeley |
| Posted: Mon Mar 30, 2009 4:11 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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The value of hcon is meaningless for you to look at. It is only of interest to MQ internally. Values like 1 could be quite valid and may even be the same value across multiple threads and processes but that doesn't imply they are actually on the same connection.
There are only 3 values that are exposed in cmqc.h :
/* Connection Handles */
#define MQHC_DEF_HCONN 0
#define MQHC_UNUSABLE_HCONN (-1)
#define contact admin (-3)
I would double-check your code and add some debugging just after calling MQCONN and just before calling MQCB to make sure the scope of your hcon is correct and as you expected.
It is irrelevant whether you are using client or bindings mode.
_________________
Glenn |
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| shashikanth_in |
| Posted: Mon Mar 30, 2009 7:30 pm Post subject: |
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Centurion
Joined: 26 Feb 2009
Posts: 123
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| The piece of code where you are getting HConn and passing onto MQCB will be helpfull. I am assuming you are using WebSphere MQ .NET classes. |
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