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IC89944: WEBSPHERE WMQFTE V7 BRIDGE AGENT DOESN'T CLOSE AN FTP SESSION GRACEFULLY

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APAR status

  • Closed as program error.

Error description

  • The protocol bridge agent does not perform a user logout
    (i.e., does not send a QUIT command to the FTP(S) server) before
    it disconnects. Some FTP/FTPS servers may handle a client
    closing the connection without logout (QUIT) as an error.
    Therefore when transferring a file to a file server and not
    performing a logout prior to disconnecting may result in the
    file server treating the transfer as a failure and
    subsequently block application access to the transferred file.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    This issue affects users of the WebSphere MQ File Transfer
    Edition protocol bridge agent connecting to an FTP or FTPS
    file server.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM SUMMARY:
    The protocol bridge agent of WebSphere MQ File Transfer
    Edition is used to send / receive files to an FTP or FTPS file
    server outside of WebSphere MQ File Transfer Edition network.
    When the transfer has completed, the protocol bridge agent
    closes the connection to the external file server. Before
    closing the connection to the file server, the protocol bridge
    agent did not issue a QUIT command to logout the user used to
    connect to the file server. This caused some file servers,
    that require the FTP client to issue a QUIT command before
    disconnecting, as an error in transmission and to treat a file
    transfer as a failure.
    

Problem conclusion

  • A new protocol bridge agent property (that accepts a boolean
    "true" or "false" value) has been created that when set,
    instructs the protocol bridge agent to issue a QUIT command to
    the FTP(S) file server prior to closing the connection to it.
    
    This property is called,
    "protocolBridgeLogoutBeforeDisconnect" and can be set within the
    agent.properties file for the protocol bridge agent by adding
    the line:
    
    protocolBridgeLogoutBeforeDisconnect=true
    
    By default, the value of this new property is false. This
    ensures that the protocol bridge agent will maintain current
    behaviour and disconnect without issuing a QUIT command.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Platform           v7.5
    --------           --------------------
    Multiplatforms     7.5.0.2
    
    Platform           v7.0
    --------           --------------------
    Multiplatforms     7.0.4.3
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC89944

  • Reported component name

    WMQ FILE TRANSF

  • Reported component ID

    5724R1000

  • Reported release

    704

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-02-01

  • Closed date

    2013-02-27

  • Last modified date

    2013-02-27

  • 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

    WMQ FILE TRANSF

  • Fixed component ID

    5724R1000

Applicable component levels

  • R704 PSY

       UP

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Document Information

Modified date:
27 February 2013