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  • 1.  DataPower Log Error: Error in stream. Descriptor number unavailable. Additional information: Read error (7)

    Posted 11/02/23 11:40 AM
    Edited by Anusha Pudari 11/03/23 05:46 AM
      |   view attached

    Hi All,

    I am currently experiencing an issue in API Connect when attempting to use an encrypted request (Reference: Attached encReq - 2.33MB in size) as described below.

    In the DataPower log, I have encountered the following error message: 'Error in stream. Descriptor number unavailable. Additional information: Read error (7)'

    The API response I'm receiving is in the form of an HTML error message:

    <!DOCTYPE html
    PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
     
    <head>
    <META HTTP-EQUIV="CONTENT-TYPE" CONTENT="TEXT/HTML; CHARSET=utf-8" />
    <title>Error</title>
    </head>
     
    <body>
    <H2>Error</H2>
    <table summary="Error" border="0" bgcolor="#FEEE7A" cellpadding="0" cellspacing="0" width="400">
    <tr>
    <td>
    <table summary="Error" border="0" cellpadding="3" cellspacing="1">
    <tr valign="top" bgcolor="#FBFFDF" align="left">
    <td><STRONG>Error</STRONG></td>
    </tr>
    <tr valign="top" bgcolor="#FFFFFF">
    <td>This page can't be displayed. Contact support for additional
    information.<br/>The incident ID is: N/A.</td>
    </tr>
    </table>
    </td>
    </tr>
    </table>
    </body>
     
    </html>

    Interestingly, the issue only occurs when using an encReq of size 2.33MB. When I use an encReq of size 1.74MB, everything works as expected.

    DataPower Version: 10.5.0.4R

    API Connect Version: 10.0.5.4

    Please take note that I have already configured parse settings for maximum lengths. Could you kindly assist me in resolving this issue?"



    ------------------------------
    Anusha Pudari
    ------------------------------

    Attachment(s)

    txt
    encReq.txt   2.33 MB 1 version


  • 2.  RE: DataPower Log Error: Error in stream. Descriptor number unavailable. Additional information: Read error (7)

    Posted 11/03/23 01:11 AM
    Edited by Anusha Pudari 11/03/23 01:16 AM
    Can you please check on the above issue and give a appropriate solution.



    ------------------------------
    Anusha Pudari
    ------------------------------



  • 3.  RE: DataPower Log Error: Error in stream. Descriptor number unavailable. Additional information: Read error (7)

    Posted 11/09/23 04:20 PM

    Hi Anusha,
    So your payload is

    {
    "Req": {
        "enc": "a very large payload represented most probably as a base 64 string"
    }
}

    Obviously that's a very large JSON value string.  If you were parsing on DataPower you'd get a parse error unless you specified a custom parse settings, but given that HTML error message you're getting isn't generated by API Connect, I'd imagine it must be coming from a backend server your API is communicating with. Your log message Error in stream. Descriptor number unavailable. Additional information: Read error (7) I don't see how you'd get a response at all if you were having that type of issue.  Are you sure that message is from the same transaction id? I'd suggest you open a PMR/Support ticket to have L2 Support provide assistance with the API, error report/logs, and a packet capture that would collect traffic to the inbound to the API Connect service and outbound to any backend server, also with the tls session keys enabled on the capture.

    Best Regards,
    Steve



    ------------------------------
    Steve Linn
    Senior Consulting I/T Specialist
    IBM
    ------------------------------

    Original Message


  • 4.  RE: DataPower Log Error: Error in stream. Descriptor number unavailable. Additional information: Read error (7)

    Posted 07/07/25 01:36 AM

    Hi @Steve Linn,

    We are facing the same issue in our datapower MPGW, whereas we are getting Internal Server error after the timeout env:Server Error.

    12:54:46 PM mpgw error
    598163745
    		 error
    172.16.98.49
    0x00530002
    mpgw (External-MPGW)
    : 
    Read error
    12:54:46 PM network error
    598163745
    172.16.98.49
    0x80e006c1
    12:54:46 PM multistep error
    598163745
    		 response
    172.16.98.49
    0x80c00008
    12:54:46 PM network error
    598163745
    172.16.98.49
    0x80e006c1
    12:54:41 PM xsltmsg error
    598163745
    		 request
    172.16.98.49
    0x80000001
    12:54:41 PM xsltmsg error
    598163745
    		 request
    172.16.98.49
    0x80000001
    mpgw (External-MPGW)
    : 
    value of service uri: /NSEAPIService/resources/CollateralService?oauth_consumer_key=630dc2548857475cafac83d1c0972f78&amp;oauth_token=b03ea273838a4ecaa4a15c11dd41c91b&amp;oauth_signature_method=HMAC-SHA1&amp;oauth_version=1.0&amp;oauth_signature=8d6255d5572e4e5a83982037c482c264&amp;oauth_nonce=277878496529115&amp;oauth_timestamp=1751700257&amp;data_format=JSON&amp;data={%22header%22:{%22msgId%22:%20%2200240201302130000001%22,%22msgType%22:%20100,%22msgSubType%22:%201001,%22msgPrepDate%22:%2020131008,%22msgPrepTime%22:%20183220},%22instDetails%22:{%22segment%22:%20%22C%22,%22memCode%22:%20%2206637%22,%22collType%22:%20%22MD%22,%22instNo%22:%20%22000451231341%22,%22issueDt%22:%20%2220130111%22,%22maturityDt%22:%20%2220140111%22,%22amount%22:%2010000000.00,%22rateOfInterest%22:%2010.00,%22bgfdCreationDt%22:%2020141202,%22bgfdCreationTime%22:%20121212,%22lien%22:%20%22NSCCL%22,%22remarks%22:%20%22FDR%20Addition%22,%22ifscCode%22:%20%22IE23234298%22},%22signature%22:{%22signature%22:%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
    12:54:04 PM xsltmsg error
    688089552
    		 request
    172.16.98.49
    0x80000001
    mpgw (External-MPGW)
    : 
    value of rule name: E-FDR_Rule

    Please let me know if anything need to be done.



    ------------------------------
    Stefen Salvatore
    ------------------------------

    Original Message


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