NAME

       TSSslSession - TSSslSession API function

SYNOPSIS

          #include <ts/ts.h>

       TSSslSession TSSslSessionGet(const TSSslSessionID *sessionid)

       int TSSslSessionGetBuffer(const TSSslSessionID *sessionid, char *buffer, int *len_ptr)

       TSReturnCode  TSSslSessionInsert(const TSSslSessionID *sessionid, TSSslSession addSession,
       TSSslConnection ssl_conn)

       TSReturnCode TSSslSessionRemove(const TSSslSessionID *sessionid)

       void TSSslTicketKeyUpdate(char *ticketData, int ticketDataLength)

DESCRIPTION

       These functions work with the internal ATS session cache.  These functions are only useful
       if the ATS internal session cache is enabled by setting proxy.config.ssl.session_cache has
       been set to 2.

       These functions tend to be used with the TS_SSL_SESSION_HOOK.

       The functions work with the  TSSslSessionID  object  to  identify  sessions  to  retrieve,
       insert, or delete.

       The functions also work with the TSSslSession object which can be cast to a pointer to the
       openssl SSL_SESSION object.

       These functions perform the appropriate locking on the session cache to avoid errors.

       The TSSslSessionGet() and  TSSslSessionGetBuffer()  functions  retrieve  the  TSSslSession
       object  that  is identified by the TSSslSessionID object.  If there is no matching session
       object, TSSslSessionGet() returns NULL and TSSslSessionGetBuffer() returns 0.

       TSSslSessionGetBuffer() returns the session information serialized in a buffer that can be
       shared  between processes.  When the function is called len_ptr should point to the amount
       of space available in the buffer parameter.  The  function  returns  the  amount  of  data
       really  needed to encode the session.  len_ptr is updated with the amount of data actually
       stored in the buffer.  TSSslSessionGetBuffer() will not overrun the provided  buffer,  but
       the  caller should ensure that the data's size was not larger than the buffer by comparing
       the returned value with the value of len_ptr. If the returned value  is  larger  than  the
       buffer  size,  then the session data did not fit in the buffer and the session data stored
       in the buffer output variable should not be used.

       TSSslSessionInsert() inserts the session specified by the addSession  parameter  into  the
       ATS  session cache under the sessionid key.  If there is already an entry in the cache for
       the session id key, it is first removed before the new entry is added.

       TSSslSessionRemove() removes the session entry from the session cache  that  is  keyed  by
       sessionid.

       TSSslTicketKeyUpdate()  updates the running ATS process to use a new set of Session Ticket
       Encryption keys.  This behaves the same way as updating the  session  ticket  encrypt  key
       file  with  new  data  and  reloading the current ATS process.  However, this API does not
       require writing session ticket encryption keys to disk.

       If both the ticket key files and TSSslTicketKeyUpdate() are used to update session  ticket
       encryption  keys, ATS will use the most recent update regardless if whether it was made by
       file and configuration reload or API.

COPYRIGHT

       2022, dev@trafficserver.apache.org