Hello monks, I got little problem with Server-side SSL Session cache. I got a IO::Socket::SSL Server, which listen at a $LISTEN_PORT and accepts connection. 
$SERVER = IO::Socket::SSL->new(  Proto     => 'tcp',
                                 LocalPort => $LISTEN_PORT,
                                 Listen    => 5,
                                 ReuseAddr => 1,

                                 %ssl_opts,
                              );

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where %ssl_opts includes SSL_key_file, SSL_cert_file, SSL_ca_file and SSL_verify_mode. Than I accept every connection, like that: 
while(4)
  {
  last if $break_main_loop;
  my $CLIENT = $SERVER->accept();
  
if( ! $CLIENT )
    {
    rcd_log( "fatal: $SERVER_SSL_TRAP_ERROR" ) if $opt_ssl and $SERVER
+_SSL_TRAP_ERROR;
    next;
    }

  my $peerhost = $CLIENT->peerhost();
  my $peerport = $CLIENT->peerport();
  my $sockhost = $CLIENT->sockhost();
  my $sockport = $CLIENT->sockport();

  rcd_log( "info: connection from $peerhost:$peerport to $sockhost:$so
+ckport (me)" );
  
  # do the rest

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The IO::Socket::SSL documentation says: 
SSL_session_cache_size

    If you make repeated connections to the same host/port and the SSL
+ renegotiation time is an issue, you can turn on client-side session 
+caching with this option by specifying a positive cache size. For suc
+cessive connections, pass the SSL_reuse_ctx option to the new() calls
+ (or use set_default_context()) to make use of the cached sessions. T
+he session cache size refers to the number of unique host/port pairs 
+that can be stored at one time; the oldest sessions in the cache will
+ be removed if new ones are added.

SSL_session_cache

    Specifies session cache object which should be used instead of cre
+ating a new. Overrules SSL_session_cache_size. This option is useful 
+if you want to reuse the cache, but not the rest of the context.
    A session cache object can be created using IO::Socket::SSL::Sessi
+on_Cache->new( cachesize ).

    Use set_default_session_cache() to set a global cache object.

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So how I am supposed to enable the SSL caching? Adding SSL_session_cache_size to the %ssl_opts hash, doesn't do the right thing. I am trying to make 5 repeatedly connection and every time my session-id is different. 
openssl s_client -reconnect -state -prexit -connect localhost:443 -cer
+t testpkey.pem

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Thanks

In reply to IO::Socket::SSL Server-side Session caching by dpetrov

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