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diff --git a/pjmedia/include/pjmedia/transport_loop.h b/pjmedia/include/pjmedia/transport_loop.h
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+++ b/pjmedia/include/pjmedia/transport_loop.h
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+/* $Id:$ */
+/* 
+ * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+#ifndef __PJMEDIA_TRANSPORT_LOOP_H__
+#define __PJMEDIA_TRANSPORT_LOOP_H__
+
+
+/**
+ * @file transport_loop.h
+ * @brief Loopback transport
+ */
+
+#include <pjmedia/stream.h>
+
+
+/**
+ * @defgroup PJMEDIA_TRANSPORT_LOOP Loopback Media Transport
+ * @ingroup PJMEDIA_TRANSPORT
+ * @brief Loopback transport for testing.
+ * @{
+ *
+ * This is the loopback media transport, where packet sent to this transport
+ * will immediately be sent back to the callback.
+ */
+
+PJ_BEGIN_DECL
+
+
+/**
+ * Create the loopback transport.
+ *
+ * @param endpt	    The media endpoint instance.
+ * @param p_tp	    Pointer to receive the transport instance.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_transport_loop_create(pjmedia_endpt *endpt,
+						   pjmedia_transport **p_tp);
+
+
+
+
+PJ_END_DECL
+
+
+/**
+ * @}
+ */
+
+
+#endif	/* __PJMEDIA_TRANSPORT_LOOP_H__ */
+
+