[AGENT++] snmpv3 USM table - thread safety

[Anurag Jain]

Hello ,


        Could you advice me on the following scenario (we use the 3.2.21a of the snmp library ):

A multithreaded server  receives snmp v3 traps from the  multitude of snmp agents. The security user used for trap reception is the same as the security user used for snmp gets or walks on the agent.
The snmp v3 security user may change with get requests which requires the USM to be kept updated.

This  done  by calling the add_usm_user function supplying the engineID as an input (work with localized keys) before the snmp get operations . This could potentially happen from multiple threads . Is there an issue with updating the USM from one thread while doing snmp gets/walks from another thread.

Are  the USM table / library operations  thread safe in the above scenario ?


Thanks
Anurag







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