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Jeffries
PostPosted: Fri Jan 27, 2023 11:05 am    Post subject: Getting Dot characters while pulling message from MQ by Main Reply with quote

Newbie

Joined: 27 Jan 2023
Posts: 1

Hi All,

We receiving messages from DotNet Client application to our Mainframe Queue manager and while the Mainframe application tries to pull the message from our Mainframe Queue the messages are appending with dot (.) Characters in front of each messages

Please suggest some solution for this.

Thank you.[/b]
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fjb_saper
PostPosted: Sat Jan 28, 2023 2:28 am    Post subject: Re: Getting Dot characters while pulling message from MQ by Reply with quote

Grand High Poobah

Joined: 18 Nov 2003
Posts: 20640
Location: LI,NY

Jeffries wrote:
Hi All,

We receiving messages from DotNet Client application to our Mainframe Queue manager and while the Mainframe application tries to pull the message from our Mainframe Queue the messages are appending with dot (.) Characters in front of each messages

Please suggest some solution for this.

Thank you.[/b]

What is the CCSID on the message, what is the message format and how did the message get written to the queue(API method called)?
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bruce2359
PostPosted: Sat Jan 28, 2023 5:34 am    Post subject: Re: Getting Dot characters while pulling message from MQ by Reply with quote

Poobah

Joined: 05 Jan 2008
Posts: 9284
Location: US: west coast, almost. Otherwise, enroute.

Jeffries wrote:
... message from our Mainframe Queue the messages are appending with dot (.) Characters in front of each messages

I'm a bit confused by this. When you append something to something else, you attach it or add it to the end of it - not the start of it. (For example, I appended a dot character to the end of this sentence.) Conversely, prepend usually means attach (a piece of data) to the beginning of another.

A message consists of a message descriptor header (MQMD) and your application data payload.

So, are you saying that the . is now the first (left-most) non-blank character of your application data payload? Or the right-most character? Or somewhere else?

It might help if you displayed a portion of the message for us to see - both MQMD and application data payload - in character character and hex formats.

The CCSID and message format are part of the MQMD.
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zpat
PostPosted: Sun Jan 29, 2023 7:21 am    Post subject: Reply with quote

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Joined: 19 May 2001
Posts: 5824
Location: UK

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Well, I don't think there is any question about it. It can only be attributable to human error. This sort of thing has cropped up before, and it has always been due to human error.
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hughson
PostPosted: Mon Jan 30, 2023 5:07 pm    Post subject: Re: Getting Dot characters while pulling message from MQ by Reply with quote

Padawan

Joined: 09 May 2013
Posts: 1830
Location: Bay of Plenty, New Zealand

Jeffries wrote:
We receiving messages from DotNet Client application to our Mainframe Queue manager and while the Mainframe application tries to pull the message from our Mainframe Queue the messages are appending with dot (.) Characters in front of each messages

A dot (.) character is classically used to represent a character that does not have a printable form. Often nulls but also other non-printable control characters.

You seem to be describing that every character has a dot in front of it? This makes me think that the message is in a UniCode codepage, where each character is represented by 2 bytes, where for many" normal" characters, e.g. your A-Z and 0-9 characters, the first of the two bytes is 0x00. If you take a stream of bytes and assume it is single-byte ASCII when it is actually Double-byte UniCode, it would be printed out as dot-character-dot-character.

Others have asked what the code page of the message is - I would reiterate that, and also ask, does your mainframe application use MQGET with MQGMO_CONVERT?

Cheers,
Morag
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gbaddeley
PostPosted: Tue Jan 31, 2023 4:56 pm    Post subject: Re: Getting Dot characters while pulling message from MQ by Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2413
Location: Melbourne, Australia

Jeffries wrote:
Hi All,
We receiving messages from DotNet Client application to our Mainframe Queue manager and while the Mainframe application tries to pull the message from our Mainframe Queue the messages are appending with dot (.) Characters in front of each messages
Please suggest some solution for this.
Thank you.[/b]

Can you provide a dump of the message descriptor and a hex byte dump of the message data?
eg. Using MO71 browse, or using amqsbcg sample program.
This will reveal the CCSID of the message and the format of the data.
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