Add reco_debug_level to reduce debug output

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>

programs/ssl/ssl_server2.c

@@ -490,6 +490,8 @@ int main( void )
     "    debug_level=%%d      default: 0 (disabled)\n"      \
     "    build_version=%%d    default: none (disabled)\n"                     \
     "                        option: 1 (print build version only and stop)\n" \
+    "    reco_debug_level=%%d default: 0 (disabled)\n"      \
+    "                         debug_level for 2nd flight.\n" \
     "    buffer_size=%%d      default: 200 \n" \
     "                         (minimum: 1)\n" \
     "    response_size=%%d    default: about 152 (basic response)\n" \
@@ -592,6 +594,7 @@ struct options
     const char *server_addr;    /* address on which the ssl service runs    */
     const char *server_port;    /* port on which the ssl service runs       */
     int debug_level;            /* level of debugging                       */
+    int reco_debug_level;       /* level of 2nd flight debugging            */
     int nbio;                   /* should I/O be blocking?                  */
     int event;                  /* loop or event-driven IO? level or edge triggered? */
     uint32_t read_timeout;      /* timeout on mbedtls_ssl_read() in milliseconds    */
@@ -1629,6 +1632,7 @@ int main( int argc, char *argv[] )
     opt.server_addr         = DFL_SERVER_ADDR;
     opt.server_port         = DFL_SERVER_PORT;
     opt.debug_level         = DFL_DEBUG_LEVEL;
+    opt.reco_debug_level    = DFL_DEBUG_LEVEL;
     opt.event               = DFL_EVENT;
     opt.response_size       = DFL_RESPONSE_SIZE;
     opt.nbio                = DFL_NBIO;
@@ -1755,6 +1759,12 @@ int main( int argc, char *argv[] )
                 goto exit;
             }
         }
+        else if( strcmp( p, "reco_debug_level" ) == 0 )
+        {
+            opt.reco_debug_level = atoi( q );
+            if( opt.reco_debug_level < 0 || opt.reco_debug_level > 65535 )
+                goto usage;
+        }
         else if( strcmp( p, "nbio" ) == 0 )
         {
             opt.nbio = atoi( q );
@@ -4284,6 +4294,11 @@ int main( int argc, char *argv[] )
 
     mbedtls_printf( " done\n" );
 
+#if defined(MBEDTLS_DEBUG_C)
+    if( opt.reco_debug_level )
+        mbedtls_debug_set_threshold( opt.reco_debug_level );
+#endif
+
     goto reset;
 
     /*