/* 128 */ invokeLock.readLock().acquire();
/* */ try
/* */ {
/* 131 */ if (closed)
/* */ {
/* 133 */ throw new MessagingShutdownException("Cannot handle invocation since messaging server is not active (it is either starting up or shutting down)");
/* */ }
/* */
/* 136 */ RequestSupport request = (RequestSupport)invocation.getParameter();
/* */
/* 138 */ if ((request instanceof CallbackRequestSupport))