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IT12894: VERSION 7 JAVA SSL CLIENTS UNABLE TO CONNECT TO NON STOP TANDEM QMGR 5.3.1

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APAR status

  • Closed as program error.

Error description

  • Change Team finds Version 7 Java SSL clients send only 1 byte
    in the initial packet they send to the server.
    This behavior is not the same as on earlier versions (pre v7
    clients). The server code needs to accept the 1 byte message
    and request the rest of the packet before validating the data.
    This is a similar problem as was seen on OMVS and APAR IT12752
    was created for that.
    

Local fix

  • n/a
    

Problem summary

  • Version 7 Java SSL clients send only 1 byte in the initial
    packet they send to the server.
    This behavior is not the same as on earlier versions (pre v7
    Java clients).
    The server code needs to accept the 1 byte message, and request
    the rest of the packet before validating the data"
    (this is a similar problem as was seen on OVMS and APAR IT12752
    was  created for that)
    

Problem conclusion

  • Code changed to handle scenario where less than 8 bytes is sent
    by the client. and to re-read until at least 8 bytes is read.
    (any read that returns >0 bytes is regarded as is a successful
    read and in this particular  case only 1 byte has been sent )
    

Temporary fix

  • use a pre v7 Java client
    

Comments

APAR Information

  • APAR number

    IT12894

  • Reported component name

    WEBS MQ NSS MIP

  • Reported component ID

    5724A3901

  • Reported release

    531

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-12-22

  • Closed date

    2016-01-01

  • Last modified date

    2016-01-01

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    WEBS MQ NSS MIP

  • Fixed component ID

    5724A3901

Applicable component levels

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1"}]

Document Information

Modified date:
17 November 2020