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Troubleshooting NPE Bug in Sailfin Proxy Component Model for B2BUA Use Case

Learn how to resolve a NullPointerException (NPE) bug in the Sailfin Proxy component model within a B2BUA use case. This issue is likely related to the branch of certain SIP INVITE transactions.

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Troubleshooting NPE Bug in Sailfin Proxy Component Model for B2BUA Use Case

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  1. Sailfin Use case Bug

  2. Component Model EAR Forking Proxy B2BUA

  3. Use case AS(Forking Proxy) UserA CSCF B2BUA MRF UserB INVITE (1) INVITE TRYING TRYING INVITE (2) INVITE 200Ok BYE 487 (note 1) 200Ok INVITE (3) TRYING Ringing CANCEL NPE, probably related to branch of INVITE(2)

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