Ticket #61: Implement SRTP support in PJMEDIA and PJSUA-LIB, and updated applications because of the changes. This is a major modification back ported from SRTP branch. See ticket #61 for changelog detail of this commit

git-svn-id: http://svn.pjsip.org/repos/pjproject/trunk@1735 74dad513-b988-da41-8d7b-12977e46ad98

7 files changed, 415 insertions, 135 deletions

diff --git a/pjmedia/include/pjmedia.h b/pjmedia/include/pjmedia.h
index 4a104512..bf580675 100644
--- a/pjmedia/include/pjmedia.h
+++ b/pjmedia/include/pjmedia.h
@@ -54,6 +54,7 @@
 #include <pjmedia/tonegen.h>
 #include <pjmedia/transport.h>
 #include <pjmedia/transport_ice.h>
+#include <pjmedia/transport_srtp.h>
 #include <pjmedia/transport_udp.h>
 #include <pjmedia/wav_playlist.h>
 #include <pjmedia/wav_port.h>
diff --git a/pjmedia/include/pjmedia/config.h b/pjmedia/include/pjmedia/config.h
index 4c7b26be..ecfd371a 100644
--- a/pjmedia/include/pjmedia/config.h
+++ b/pjmedia/include/pjmedia/config.h
@@ -484,6 +484,14 @@
 #endif
 
 
+/**
+ * SRTP Transport
+ * By default it is enabled.
+ */
+#ifndef PJMEDIA_HAS_SRTP
+#   define PJMEDIA_HAS_SRTP			    1
+#endif
+
 
 /**
  * @}
diff --git a/pjmedia/include/pjmedia/errno.h b/pjmedia/include/pjmedia/errno.h
index f14e3599..6be64979 100644
--- a/pjmedia/include/pjmedia/errno.h
+++ b/pjmedia/include/pjmedia/errno.h
@@ -42,18 +42,35 @@ PJ_BEGIN_DECL
  * Start of error code relative to PJ_ERRNO_START_USER.
  */
 #define PJMEDIA_ERRNO_START       (PJ_ERRNO_START_USER + PJ_ERRNO_SPACE_SIZE)
+#define PJMEDIA_ERRNO_END         (PJMEDIA_ERRNO_START + PJ_ERRNO_SPACE_SIZE - 1)
 
 
 /**
  * Mapping from PortAudio error codes to pjmedia error space.
  */
-#define PJMEDIA_PORTAUDIO_ERRNO_START (PJMEDIA_ERRNO_START+PJ_ERRNO_SPACE_SIZE-1000)
-
+#define PJMEDIA_PORTAUDIO_ERRNO_START (PJMEDIA_ERRNO_END-10000)
+#define PJMEDIA_PORTAUDIO_ERRNO_END   (PJMEDIA_PORTAUDIO_ERRNO_START + 10000 -1)
 /**
  * Convert PortAudio error code to PJMEDIA error code.
+ * PortAudio error code range: 0 >= err >= -10000
  */
-#define PJMEDIA_ERRNO_FROM_PORTAUDIO(err)   (err+PJMEDIA_PORTAUDIO_ERRNO_START)
+#define PJMEDIA_ERRNO_FROM_PORTAUDIO(err)   ((int)PJMEDIA_PORTAUDIO_ERRNO_START-err)
+
+
+#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
 
+ /**
+ * Mapping from LibSRTP error codes to pjmedia error space.
+ */
+#define PJMEDIA_LIBSRTP_ERRNO_START (PJMEDIA_ERRNO_END-10200)
+#define PJMEDIA_LIBSRTP_ERRNO_END   (PJMEDIA_LIBSRTP_ERRNO_START + 200 - 1)
+/**
+ * Convert LibSRTP error code to PJMEDIA error code.
+ * LibSRTP error code range: 0 <= err < 200
+ */
+#define PJMEDIA_ERRNO_FROM_LIBSRTP(err)   (PJMEDIA_LIBSRTP_ERRNO_START+err)
+
+#endif
 
 /************************************************************
  * GENERIC/GENERAL PJMEDIA ERRORS
@@ -526,6 +543,64 @@ PJ_BEGIN_DECL
 #define PJMEDIA_ESNDINSAMPLEFMT	    (PJMEDIA_ERRNO_START+203)    /* 220203 */
 
 
+#if defined(PJMEDIA_HAS_SRTP) && (PJMEDIA_HAS_SRTP != 0)
+/************************************************************
+ * SRTP TRANSPORT ERRORS
+ ***********************************************************/
+/**
+ * @hideinitializer
+ * SRTP crypto-suite name not match the offerer tag.
+ */
+#define PJMEDIA_SRTP_ECRYPTONOTMATCH (PJMEDIA_ERRNO_START+220)   /* 220220 */
+/**
+ * @hideinitializer
+ * Invalid SRTP key length for specific crypto.
+ */
+#define PJMEDIA_SRTP_EINKEYLEN	    (PJMEDIA_ERRNO_START+221)    /* 220221 */
+/**
+ * @hideinitializer
+ * Unsupported SRTP crypto-suite.
+ */
+#define PJMEDIA_SRTP_ENOTSUPCRYPTO  (PJMEDIA_ERRNO_START+222)    /* 220222 */
+/**
+ * @hideinitializer
+ * SRTP SDP contains ambigue answer.
+ */
+#define PJMEDIA_SRTP_ESDPAMBIGUEANS (PJMEDIA_ERRNO_START+223)    /* 220223 */
+/**
+ * @hideinitializer
+ * Duplicated crypto tag.
+ */
+#define PJMEDIA_SRTP_ESDPDUPCRYPTOTAG (PJMEDIA_ERRNO_START+224)  /* 220224 */
+/**
+ * @hideinitializer
+ * Invalid crypto attribute.
+ */
+#define PJMEDIA_SRTP_ESDPINCRYPTO   (PJMEDIA_ERRNO_START+225)    /* 220225 */
+/**
+ * @hideinitializer
+ * Invalid crypto tag.
+ */
+#define PJMEDIA_SRTP_ESDPINCRYPTOTAG (PJMEDIA_ERRNO_START+226)   /* 220226 */
+/**
+ * @hideinitializer
+ * Invalid SDP media transport for SRTP.
+ */
+#define PJMEDIA_SRTP_ESDPINTRANSPORT (PJMEDIA_ERRNO_START+227)   /* 220227 */
+/**
+ * @hideinitializer
+ * SRTP crypto attribute required in SDP.
+ */
+#define PJMEDIA_SRTP_ESDPREQCRYPTO  (PJMEDIA_ERRNO_START+228)    /* 220228 */
+/**
+ * @hideinitializer
+ * Secure transport required in SDP media descriptor.
+ */
+#define PJMEDIA_SRTP_ESDPREQSECTP   (PJMEDIA_ERRNO_START+229)    /* 220229 */
+
+#endif /* PJMEDIA_HAS_SRTP */
+
+
 /**
  * Get error message for the specified error code. Note that this
  * function is only able to decode PJMEDIA specific error code.
diff --git a/pjmedia/include/pjmedia/transport.h b/pjmedia/include/pjmedia/transport.h
index 1e7d67db..e9fbb1f3 100644
--- a/pjmedia/include/pjmedia/transport.h
+++ b/pjmedia/include/pjmedia/transport.h
@@ -166,6 +166,7 @@
 
 PJ_BEGIN_DECL
 
+#include <pjmedia/sdp.h>
 
 /*
  * Forward declaration for media transport.
@@ -244,6 +245,50 @@ struct pjmedia_transport_op
 			     pj_size_t size);
 
     /**
+     * This function is called by application to generate the SDP parts
+     * related to transport type, e.g: ICE, SRTP.
+     *
+     * Application should call #pjmedia_transport_media_create() instead of 
+     * calling this function directly.
+     */
+    pj_status_t (*media_create)(pjmedia_transport *tp,
+				pj_pool_t *pool,
+				pjmedia_sdp_session *sdp_local,
+				const pjmedia_sdp_session *sdp_remote,
+				unsigned media_index);
+
+    /**
+     * This function is called by application to start the transport
+     * based on SDP negotiation result.
+     *
+     * Application should call #pjmedia_transport_media_start() instead of 
+     * calling this function directly.
+     */
+    pj_status_t (*media_start) (pjmedia_transport *tp,
+			        pj_pool_t *pool,
+			        pjmedia_sdp_session *sdp_local,
+			        const pjmedia_sdp_session *sdp_remote,
+				unsigned media_index);
+
+    /**
+     * This function is called by application to stop the transport.
+     *
+     * Application should call #pjmedia_transport_media_stop() instead of 
+     * calling this function directly.
+     */
+    pj_status_t (*media_stop)  (pjmedia_transport *tp);
+
+    /**
+     * This function can be called to simulate packet lost.
+     *
+     * Application should call #pjmedia_transport_simulate_lost() instead of 
+     * calling this function directly.
+     */
+    pj_status_t (*simulate_lost)(pjmedia_transport *tp,
+				 pjmedia_dir dir,
+				 unsigned pct_lost);
+
+    /**
      * This function can be called to destroy this transport.
      *
      * Application should call #pjmedia_transport_close() instead of 
@@ -410,6 +455,67 @@ PJ_INLINE(pj_status_t) pjmedia_transport_send_rtcp(pjmedia_transport *tp,
 
 
 /**
+ * Generate local SDP parts that are related to the specified media transport.
+ * Remote SDP might be needed as reference when application is in deciding
+ * side of negotiation (callee side), otherwise it should be NULL.
+ * This is just a simple wrapper which calls <tt>media_create()</tt> member 
+ * of the transport.
+ *
+ * @param tp		The media transport.
+ * @param pool		The memory pool.
+ * @param sdp_local	Local SDP.
+ * @param sdp_remote	Remote SDP.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_INLINE(pj_status_t) pjmedia_transport_media_create(pjmedia_transport *tp,
+				    pj_pool_t *pool,
+				    pjmedia_sdp_session *sdp_local,
+				    const pjmedia_sdp_session *sdp_remote,
+				    unsigned media_index)
+{
+    return (*tp->op->media_create)(tp, pool, sdp_local, sdp_remote, 
+				   media_index);
+}
+
+/**
+ * Start the transport with regards to SDP negotiation result. 
+ * This is just a simple wrapper which calls <tt>media_start()</tt> member 
+ * of the transport.
+ *
+ * @param tp		The media transport.
+ * @param pool		The memory pool.
+ * @param sdp_local	Local SDP.
+ * @param sdp_remote	Remote SDP.
+ * @param media_index	Media index to start.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_INLINE(pj_status_t) pjmedia_transport_media_start(pjmedia_transport *tp,
+				    pj_pool_t *pool,
+				    pjmedia_sdp_session *sdp_local,
+				    const pjmedia_sdp_session *sdp_remote,
+				    unsigned media_index)
+{
+    return (*tp->op->media_start)(tp, pool, sdp_local, sdp_remote, media_index);
+}
+
+
+/**
+ * Stop the transport. 
+ * This is just a simple wrapper which calls <tt>media_stop()</tt> member 
+ * of the transport.
+ *
+ * @param tp		The media transport.
+ *
+ * @return		PJ_SUCCESS on success, or the appropriate error code.
+ */
+PJ_INLINE(pj_status_t) pjmedia_transport_media_stop(pjmedia_transport *tp)
+{
+    return (*tp->op->media_stop)(tp);
+}
+
+/**
  * Close media transport. This is just a simple wrapper which calls 
  * <tt>destroy()</tt> member of the transport. This function will free
  * all resources created by this transport (such as sockets, memory, etc.).
@@ -426,6 +532,25 @@ PJ_INLINE(pj_status_t) pjmedia_transport_close(pjmedia_transport *tp)
 	return PJ_SUCCESS;
 }
 
+/**
+ * Simulate packet lost in the specified direction (for testing purposes).
+ * When enabled, the transport will randomly drop packets to the specified
+ * direction.
+ *
+ * @param tp	    The media transport.
+ * @param dir	    Media direction to which packets will be randomly dropped.
+ * @param pct_lost  Percent lost (0-100). Set to zero to disable packet
+ *		    lost simulation.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_INLINE(pj_status_t) pjmedia_transport_simulate_lost(pjmedia_transport *tp,
+						       pjmedia_dir dir,
+						       unsigned pct_lost)
+{
+    return (*tp->op->simulate_lost)(tp, dir, pct_lost);
+}
+
 
 PJ_END_DECL
 
diff --git a/pjmedia/include/pjmedia/transport_ice.h b/pjmedia/include/pjmedia/transport_ice.h
index da1e0512..c64ac9bc 100644
--- a/pjmedia/include/pjmedia/transport_ice.h
+++ b/pjmedia/include/pjmedia/transport_ice.h
@@ -16,8 +16,8 @@
  * 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_ice_H__
-#define __pjmedia_ice_H__
+#ifndef __PJMEDIA_TRANSPORT_ICE_H__
+#define __PJMEDIA_TRANSPORT_ICE_H__
 
 
 /**
@@ -75,15 +75,6 @@ PJ_DECL(pj_status_t) pjmedia_ice_create(pjmedia_endpt *endpt,
 					const pjmedia_ice_cb *cb,
 					pjmedia_transport **p_tp);
 
-/**
- * Destroy the media transport.
- *
- * @param tp		The media transport.
- *
- * @return		PJ_SUCCESS.
- */
-PJ_DECL(pj_status_t) pjmedia_ice_destroy(pjmedia_transport *tp);
-
 
 /**
  * Start the initialization process of this media transport. This function
@@ -169,71 +160,6 @@ PJ_DECL(pj_status_t) pjmedia_ice_init_ice(pjmedia_transport *tp,
 					  const pj_str_t *local_ufrag,
 					  const pj_str_t *local_passwd);
 
-/**
- * Modify the SDP to add ICE specific SDP attributes before sending
- * the SDP to remote host.
- *
- * @param tp		The media transport.
- * @param pool		Pool to allocate memory for the SDP elements.
- * @param sdp		The SDP descriptor to be modified.
- *
- * @return		PJ_SUCCESS, or the appropriate error code.
- */
-PJ_DECL(pj_status_t) pjmedia_ice_modify_sdp(pjmedia_transport *tp,
-					    pj_pool_t *pool,
-					    pjmedia_sdp_session *sdp);
-
-/**
- * Start ICE connectivity checks.
- *
- * This function will pair the local and remote candidates to create 
- * check list. Once the check list is created and sorted based on the
- * priority, ICE periodic checks will be started. This function will 
- * return immediately, and application will be notified about the 
- * connectivity check status in the callback.
- *
- * @param tp		The media transport.
- * @param pool		Memory pool to parse the SDP.
- * @param rem_sdp	The SDP received from remote agent.
- * @param media_index	The media index (in SDP) to process.
- *
- * @return		PJ_SUCCESS, or the appropriate error code.
- */
-PJ_DECL(pj_status_t) pjmedia_ice_start_ice(pjmedia_transport *tp,
-					   pj_pool_t *pool,
-					   const pjmedia_sdp_session *rem_sdp,
-					   unsigned media_index);
-
-/**
- * Stop the ICE session (typically when the call is terminated). Application
- * may restart the ICE session again by calling #pjmedia_ice_init_ice(),
- * for example to use this media transport for the next call.
- *
- * @param tp		The media transport.
- *
- * @return		PJ_SUCCESS, or the appropriate error code.
- */
-PJ_DECL(pj_status_t) pjmedia_ice_stop_ice(pjmedia_transport *tp);
-
-
-/**
- * Simulate packet lost in the specified direction (for testing purposes).
- * When enabled, the transport will randomly drop packets to the specified
- * direction.
- *
- * @param tp	    The ICE media transport.
- * @param dir	    Media direction to which packets will be randomly dropped.
- * @param pct_lost  Percent lost (0-100). Set to zero to disable packet
- *		    lost simulation.
- *
- * @return	    PJ_SUCCESS on success.
- */
-PJ_DECL(pj_status_t) pjmedia_ice_simulate_lost(pjmedia_transport *tp,
-					       pjmedia_dir dir,
-					       unsigned pct_lost);
-
-
-
 
 PJ_END_DECL
 
@@ -243,6 +169,6 @@ PJ_END_DECL
  */
 
 
-#endif	/* __pjmedia_ice_H__ */
+#endif	/* __PJMEDIA_TRANSPORT_ICE_H__ */
 
 
diff --git a/pjmedia/include/pjmedia/transport_srtp.h b/pjmedia/include/pjmedia/transport_srtp.h
new file mode 100644
index 00000000..f7ea291d
--- /dev/null
+++ b/pjmedia/include/pjmedia/transport_srtp.h
@@ -0,0 +1,200 @@
+/* $Id$ */
+/* 
+ * Copyright (C) 2003-2007 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_SRTP_H__
+#define __PJMEDIA_TRANSPORT_SRTP_H__
+
+/**
+ * @file srtp.h
+ * @brief transport SRTP encapsulates secure media transport.
+ */
+
+#include <pjmedia/transport.h>
+
+
+PJ_BEGIN_DECL
+
+
+/**
+ * Crypto option.
+ */
+typedef enum pjmedia_srtp_crypto_option
+{
+    /** When this flag is specified, encryption will be disabled. */
+    PJMEDIA_SRTP_NO_ENCRYPTION  = 1,
+
+    /** When this flag is specified, authentication will be disabled. */
+    PJMEDIA_SRTP_NO_AUTHENTICATION  = 2
+
+} pjmedia_srtp_crypto_option;
+
+
+/**
+ * This structure describes an individual crypto setting.
+ */
+typedef struct pjmedia_srtp_crypto
+{
+    /** Optional key. If empty, a random key will be autogenerated. */
+    pj_str_t	key;
+
+    /** Crypto name.   */
+    pj_str_t	name;
+
+    /* Flags, bitmask from #pjmedia_srtp_crypto_option */
+    unsigned	flags;
+
+} pjmedia_srtp_crypto;
+
+
+/**
+ * This enumeration specifies the behavior of the SRTP transport regarding
+ * media security offer and answer.
+ */
+typedef enum pjmedia_srtp_use
+{
+    /**
+     * When this flag is specified, SRTP will be disabled, and the transport
+     * will reject RTP/SAVP offer.
+     */
+    PJMEDIA_SRTP_DISABLED,
+
+    /**
+     * When this flag is specified, SRTP will be advertised as optional and
+     * incoming SRTP offer will be accepted.
+     */
+    PJMEDIA_SRTP_OPTIONAL,
+
+    /**
+     * When this flag is specified, the transport will require that RTP/SAVP
+     * media shall be used.
+     */
+    PJMEDIA_SRTP_MANDATORY
+
+} pjmedia_srtp_use;
+
+
+/**
+ * Settings to be given when creating SRTP transport. Application should call
+ * #pjmedia_srtp_setting_default() to initialize this structure with its 
+ * default values.
+ */
+typedef struct pjmedia_srtp_setting
+{
+    /**
+     * Specify the usage policy. Default is PJMEDIA_SRTP_OPTIONAL.
+     */
+    pjmedia_srtp_use use;
+
+    /**
+     * Specify whether the SRTP transport should close the member transport 
+     * when it is destroyed. Default: PJ_TRUE.
+     */
+    pj_bool_t			close_member_tp;
+
+    /**
+     * Specify the number of crypto suite settings.
+     */
+    unsigned			crypto_count;
+
+    /**
+     * Specify individual crypto suite setting.
+     */
+    pjmedia_srtp_crypto		crypto[8];
+
+} pjmedia_srtp_setting;
+
+
+/**
+ * Initialize SRTP setting with its default values.
+ *
+ * @param opt	SRTP setting to be initialized.
+ */
+PJ_DECL(void) pjmedia_srtp_setting_default(pjmedia_srtp_setting *opt);
+
+
+/**
+ * Create an SRTP media transport.
+ *
+ * @param endpt	    The media endpoint instance.
+ * @param tp	    The actual media transport to send and receive 
+ *		    RTP/RTCP packets. This media transport will be
+ *		    kept as member transport of this SRTP instance.
+ * @param opt	    Optional settings. If NULL is given, default
+ *		    settings will be used.
+ * @param p_tp	    Pointer to receive the transport SRTP instance.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_transport_srtp_create(
+				       pjmedia_endpt *endpt,
+				       pjmedia_transport *tp,
+				       const pjmedia_srtp_setting *opt,
+				       pjmedia_transport **p_tp);
+
+
+/**
+ * Manually start SRTP session with the given parameters. Application only
+ * needs to call this function when the SRTP transport is used without SDP
+ * offer/answer. When SDP offer/answer framework is used, the SRTP transport
+ * will be started/stopped by #pjmedia_transport_media_start() and 
+ * #pjmedia_transport_media_stop() respectively.
+ *
+ * Please note that even if an RTP stream is only one direction, application
+ * will still need to provide both crypto suites, because it is needed by 
+ * RTCP.
+
+ * If application specifies the crypto keys, the keys for transmit and receive
+ * direction MUST be different.
+ *
+ * @param srtp	    The SRTP transport.
+ * @param tx	    Crypto suite setting for transmit direction.
+ * @param rx	    Crypto suite setting for receive direction.
+ *
+ * @return	    PJ_SUCCESS on success.
+ */
+PJ_DECL(pj_status_t) pjmedia_transport_srtp_start(
+					    pjmedia_transport *tp,
+					    const pjmedia_srtp_crypto *tx,
+					    const pjmedia_srtp_crypto *rx);
+
+/**
+ * Stop SRTP session.
+ *
+ * @param srtp	    The SRTP media transport.
+ *
+ * @return	    PJ_SUCCESS on success.
+ *
+ * @see #pjmedia_transport_srtp_start() 
+ */
+PJ_DECL(pj_status_t) pjmedia_transport_srtp_stop(pjmedia_transport *tp);
+
+
+/**
+ * Query member transport of SRTP.
+ *
+ * @param srtp		    The SRTP media transport.
+ *
+ * @return		    member media transport.
+ */
+PJ_DECL(pjmedia_transport*) pjmedia_transport_srtp_get_member(
+						    pjmedia_transport *tp);
+
+
+PJ_END_DECL
+
+#endif /* __PJMEDIA_TRANSPORT_SRTP_H__ */
diff --git a/pjmedia/include/pjmedia/transport_udp.h b/pjmedia/include/pjmedia/transport_udp.h
index 12f819d1..5bf5b19d 100644
--- a/pjmedia/include/pjmedia/transport_udp.h
+++ b/pjmedia/include/pjmedia/transport_udp.h
@@ -56,19 +56,6 @@ enum pjmedia_transport_udp_options
 
 
 /**
- * UDP transport info.
- */
-typedef struct pjmedia_transport_udp_info
-{
-    /**
-     * Media socket info.
-     */
-    pjmedia_sock_info	skinfo;
-
-} pjmedia_transport_udp_info;
-
-
-/**
  * Create an RTP and RTCP sockets and bind the sockets to the specified
  * port to create media transport.
  *
@@ -137,18 +124,6 @@ PJ_DECL(pj_status_t) pjmedia_transport_udp_create3(pjmedia_endpt *endpt,
 						   unsigned options,
 						   pjmedia_transport **p_tp);
 
-/**
- * Get media socket info from the specified UDP transport.
- *
- * @param tp	    The UDP transport interface.
- * @param info	    Media socket info to be initialized.
- *
- * @return	    PJ_SUCCESS on success.
- */
-PJ_DECL(pj_status_t) 
-pjmedia_transport_udp_get_info( pjmedia_transport *tp,
-				pjmedia_transport_udp_info *info);
-
 
 /**
  * Create UDP stream transport from existing sockets. Use this function when
@@ -169,36 +144,6 @@ PJ_DECL(pj_status_t) pjmedia_transport_udp_attach(pjmedia_endpt *endpt,
 						  pjmedia_transport **p_tp);
 
 
-/**
- * Simulate packet lost in the specified direction (for testing purposes).
- * When enabled, the transport will randomly drop packets to the specified
- * direction.
- *
- * @param tp	    The UDP media transport.
- * @param dir	    Media direction to which packets will be randomly dropped.
- * @param pct_lost  Percent lost (0-100). Set to zero to disable packet
- *		    lost simulation.
- *
- * @return	    PJ_SUCCESS on success.
- */
-PJ_DECL(pj_status_t) pjmedia_transport_udp_simulate_lost(pjmedia_transport *tp,
-							 pjmedia_dir dir,
-							 unsigned pct_lost);
-
-
-
-/**
- * Close UDP transport. Application can also use the "destroy" member of
- * media transport interface to close the UDP transport.
- *
- * @param tp	    The UDP media transport.
- *
- * @return	    PJ_SUCCESS on success.
- */
-PJ_DECL(pj_status_t) pjmedia_transport_udp_close(pjmedia_transport *tp);
-
-
-
 PJ_END_DECL