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

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 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