diff --git a/README.md b/README.md
index e5027c2b8..0178812c3 100755
--- a/README.md
+++ b/README.md
@@ -482,6 +482,7 @@ Supported operating systems and hardware:
 * 2013-10-17, Created.<br/>
 
 ## History
+* v2.0, 2014-11-21, srs-librtmp add rtmp prefix for rtmp/utils/human apis. 2.0.29.
 * v2.0, 2014-11-21, refine examples of srs-librtmp, add srs_print_rtmp_packet. 2.0.28.
 * v2.0, 2014-11-20, fix [#212](https://github.com/winlinvip/simple-rtmp-server/issues/212), support publish audio raw frames. 2.0.27
 * v2.0, 2014-11-19, fix [#213](https://github.com/winlinvip/simple-rtmp-server/issues/213), support compile [srs-librtmp on windows](https://github.com/winlinvip/srs.librtmp), [bug #213](https://github.com/winlinvip/simple-rtmp-server/issues/213). 2.0.26
diff --git a/trunk/research/librtmp/srs_audio_raw_publish.c b/trunk/research/librtmp/srs_audio_raw_publish.c
index 04e228dd4..9e11023ba 100644
--- a/trunk/research/librtmp/srs_audio_raw_publish.c
+++ b/trunk/research/librtmp/srs_audio_raw_publish.c
@@ -116,19 +116,19 @@ int main(int argc, char** argv)
     // connect rtmp context
     srs_rtmp_t rtmp = srs_rtmp_create(rtmp_url);
     
-    if (srs_simple_handshake(rtmp) != 0) {
+    if (srs_rtmp_handshake(rtmp) != 0) {
         srs_human_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("simple handshake success");
     
-    if (srs_connect_app(rtmp) != 0) {
+    if (srs_rtmp_connect_app(rtmp) != 0) {
         srs_human_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if (srs_publish_stream(rtmp) != 0) {
+    if (srs_rtmp_publish_stream(rtmp) != 0) {
         srs_human_trace("publish stream failed.");
         goto rtmp_destroy;
     }
diff --git a/trunk/research/librtmp/srs_bandwidth_check.c b/trunk/research/librtmp/srs_bandwidth_check.c
index 29fe1223f..fa940480b 100644
--- a/trunk/research/librtmp/srs_bandwidth_check.c
+++ b/trunk/research/librtmp/srs_bandwidth_check.c
@@ -21,7 +21,7 @@ IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 /**
-gcc srs_bandwidth_check.c ../../objs/lib/srs_librtmp.a -g -O0 -lstdc++ -o srs_bandwidth_check
+gcc srs_rtmp_bandwidth_check.c ../../objs/lib/srs_librtmp.a -g -O0 -lstdc++ -o srs_rtmp_bandwidth_check
 */
 
 #include <stdio.h>
@@ -83,20 +83,20 @@ int main(int argc, char** argv)
     
     srs_human_trace("bandwidth check/test url: %s", argv[1]);
     
-    if ((ret = srs_simple_handshake(rtmp)) != 0) {
+    if ((ret = srs_rtmp_handshake(rtmp)) != 0) {
         srs_human_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("simple handshake success");
     
-    if ((ret = srs_connect_app2(rtmp, 
+    if ((ret = srs_rtmp_connect_app2(rtmp, 
         srs_server_ip, srs_server, srs_primary_authors, srs_version, &srs_id, &srs_pid)) != 0) {
         srs_human_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if ((ret = srs_bandwidth_check(rtmp, 
+    if ((ret = srs_rtmp_bandwidth_check(rtmp, 
         &start_time, &end_time, &play_kbps, &publish_kbps,
         &play_bytes, &publish_bytes, &play_duration, &publish_duration)) != 0
     ) {
diff --git a/trunk/research/librtmp/srs_detect_rtmp.c b/trunk/research/librtmp/srs_detect_rtmp.c
index 375215385..155d28bd0 100644
--- a/trunk/research/librtmp/srs_detect_rtmp.c
+++ b/trunk/research/librtmp/srs_detect_rtmp.c
@@ -90,33 +90,33 @@ int main(int argc, char** argv)
     
     rtmp = srs_rtmp_create(rtmp_url);
     
-    if ((ret = __srs_dns_resolve(rtmp)) != 0) {
+    if ((ret = __srs_rtmp_dns_resolve(rtmp)) != 0) {
         srs_human_trace("dns resolve failed. ret=%d", ret);
         goto rtmp_destroy;
     }
     srs_human_trace("dns resolve success");
     time_dns_resolve = srs_utils_get_time_ms();
     
-    if ((ret = __srs_connect_server(rtmp)) != 0) {
+    if ((ret = __srs_rtmp_connect_server(rtmp)) != 0) {
         srs_human_trace("socket connect failed. ret=%d", ret);
         goto rtmp_destroy;
     }
     srs_human_trace("socket connect success");
     time_socket_connect = srs_utils_get_time_ms();
     
-    if ((ret = __srs_do_simple_handshake(rtmp)) != 0) {
+    if ((ret = __srs_rtmp_do_simple_handshake(rtmp)) != 0) {
         srs_human_trace("do simple handshake failed. ret=%d", ret);
         goto rtmp_destroy;
     }
     srs_human_trace("do simple handshake success");
     
-    if ((ret = srs_connect_app(rtmp)) != 0) {
+    if ((ret = srs_rtmp_connect_app(rtmp)) != 0) {
         srs_human_trace("connect vhost/app failed. ret=%d", ret);
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if ((ret = srs_play_stream(rtmp)) != 0) {
+    if ((ret = srs_rtmp_play_stream(rtmp)) != 0) {
         srs_human_trace("play stream failed. ret=%d", ret);
         goto rtmp_destroy;
     }
@@ -124,7 +124,7 @@ int main(int argc, char** argv)
     time_play_stream = srs_utils_get_time_ms();
     
     for (;;) {
-        if ((ret = srs_read_packet(rtmp, &type, &timestamp, &data, &size)) != 0) {
+        if ((ret = srs_rtmp_read_packet(rtmp, &type, &timestamp, &data, &size)) != 0) {
             srs_human_trace("read packet failed. ret=%d", ret);
             goto rtmp_destroy;
         }
diff --git a/trunk/research/librtmp/srs_h264_raw_publish.c b/trunk/research/librtmp/srs_h264_raw_publish.c
index 5e7afd399..0b7bee1ad 100644
--- a/trunk/research/librtmp/srs_h264_raw_publish.c
+++ b/trunk/research/librtmp/srs_h264_raw_publish.c
@@ -128,19 +128,19 @@ int main(int argc, char** argv)
     // connect rtmp context
     srs_rtmp_t rtmp = srs_rtmp_create(rtmp_url);
     
-    if (srs_simple_handshake(rtmp) != 0) {
+    if (srs_rtmp_handshake(rtmp) != 0) {
         srs_human_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("simple handshake success");
     
-    if (srs_connect_app(rtmp) != 0) {
+    if (srs_rtmp_connect_app(rtmp) != 0) {
         srs_human_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if (srs_publish_stream(rtmp) != 0) {
+    if (srs_rtmp_publish_stream(rtmp) != 0) {
         srs_human_trace("publish stream failed.");
         goto rtmp_destroy;
     }
diff --git a/trunk/research/librtmp/srs_ingest_flv.c b/trunk/research/librtmp/srs_ingest_flv.c
index a0a934816..8b21170f6 100644
--- a/trunk/research/librtmp/srs_ingest_flv.c
+++ b/trunk/research/librtmp/srs_ingest_flv.c
@@ -148,7 +148,7 @@ int do_proxy(srs_flv_t flv, srs_rtmp_t ortmp, int64_t re, int32_t* pstarttime, u
             return ret;
         }
         
-        if ((ret = srs_write_packet(ortmp, type, *ptimestamp, data, size)) != 0) {
+        if ((ret = srs_rtmp_write_packet(ortmp, type, *ptimestamp, data, size)) != 0) {
             srs_human_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
@@ -191,19 +191,19 @@ int connect_oc(srs_rtmp_t ortmp)
 {
     int ret = 0;
     
-    if ((ret = srs_simple_handshake(ortmp)) != 0) {
+    if ((ret = srs_rtmp_handshake(ortmp)) != 0) {
         srs_human_trace("ortmp simple handshake failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("ortmp simple handshake success");
     
-    if ((ret = srs_connect_app(ortmp)) != 0) {
+    if ((ret = srs_rtmp_connect_app(ortmp)) != 0) {
         srs_human_trace("ortmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("ortmp connect vhost/app success");
     
-    if ((ret = srs_publish_stream(ortmp)) != 0) {
+    if ((ret = srs_rtmp_publish_stream(ortmp)) != 0) {
         srs_human_trace("ortmp publish stream failed. ret=%d", ret);
         return ret;
     }
diff --git a/trunk/research/librtmp/srs_ingest_rtmp.c b/trunk/research/librtmp/srs_ingest_rtmp.c
index 6918d1307..c688a5c1b 100644
--- a/trunk/research/librtmp/srs_ingest_rtmp.c
+++ b/trunk/research/librtmp/srs_ingest_rtmp.c
@@ -108,7 +108,7 @@ int proxy(srs_rtmp_t irtmp, srs_rtmp_t ortmp)
     
     srs_human_trace("start proxy RTMP stream");
     for (;;) {
-        if ((ret = srs_read_packet(irtmp, &type, &timestamp, &data, &size)) != 0) {
+        if ((ret = srs_rtmp_read_packet(irtmp, &type, &timestamp, &data, &size)) != 0) {
             srs_human_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
@@ -118,7 +118,7 @@ int proxy(srs_rtmp_t irtmp, srs_rtmp_t ortmp)
             return ret;
         }
         
-        if ((ret = srs_write_packet(ortmp, type, timestamp, data, size)) != 0) {
+        if ((ret = srs_rtmp_write_packet(ortmp, type, timestamp, data, size)) != 0) {
             srs_human_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
@@ -133,19 +133,19 @@ int connect_ic(srs_rtmp_t irtmp)
 {
     int ret = 0;
     
-    if ((ret = srs_simple_handshake(irtmp)) != 0) {
+    if ((ret = srs_rtmp_handshake(irtmp)) != 0) {
         srs_human_trace("irtmp simple handshake failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("irtmp simple handshake success");
     
-    if ((ret = srs_connect_app(irtmp)) != 0) {
+    if ((ret = srs_rtmp_connect_app(irtmp)) != 0) {
         srs_human_trace("irtmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("irtmp connect vhost/app success");
     
-    if ((ret = srs_play_stream(irtmp)) != 0) {
+    if ((ret = srs_rtmp_play_stream(irtmp)) != 0) {
         srs_human_trace("irtmp play stream failed. ret=%d", ret);
         return ret;
     }
@@ -158,19 +158,19 @@ int connect_oc(srs_rtmp_t ortmp)
 {
     int ret = 0;
     
-    if ((ret = srs_simple_handshake(ortmp)) != 0) {
+    if ((ret = srs_rtmp_handshake(ortmp)) != 0) {
         srs_human_trace("ortmp simple handshake failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("ortmp simple handshake success");
     
-    if ((ret = srs_connect_app(ortmp)) != 0) {
+    if ((ret = srs_rtmp_connect_app(ortmp)) != 0) {
         srs_human_trace("ortmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
     srs_human_trace("ortmp connect vhost/app success");
     
-    if ((ret = srs_publish_stream(ortmp)) != 0) {
+    if ((ret = srs_rtmp_publish_stream(ortmp)) != 0) {
         srs_human_trace("ortmp publish stream failed. ret=%d", ret);
         return ret;
     }
diff --git a/trunk/research/librtmp/srs_play.c b/trunk/research/librtmp/srs_play.c
index 50583364e..c11214cc3 100644
--- a/trunk/research/librtmp/srs_play.c
+++ b/trunk/research/librtmp/srs_play.c
@@ -47,19 +47,19 @@ int main(int argc, char** argv)
     srs_human_trace("rtmp url: %s", argv[1]);
     srs_rtmp_t rtmp = srs_rtmp_create(argv[1]);
     
-    if (srs_simple_handshake(rtmp) != 0) {
+    if (srs_rtmp_handshake(rtmp) != 0) {
         srs_human_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("simple handshake success");
     
-    if (srs_connect_app(rtmp) != 0) {
+    if (srs_rtmp_connect_app(rtmp) != 0) {
         srs_human_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if (srs_play_stream(rtmp) != 0) {
+    if (srs_rtmp_play_stream(rtmp) != 0) {
         srs_human_trace("play stream failed.");
         goto rtmp_destroy;
     }
@@ -71,7 +71,7 @@ int main(int argc, char** argv)
         char* data;
         u_int32_t timestamp;
         
-        if (srs_read_packet(rtmp, &type, &timestamp, &data, &size) != 0) {
+        if (srs_rtmp_read_packet(rtmp, &type, &timestamp, &data, &size) != 0) {
             goto rtmp_destroy;
         }
         
diff --git a/trunk/research/librtmp/srs_publish.c b/trunk/research/librtmp/srs_publish.c
index 077fa20d2..1b8c4fb4e 100644
--- a/trunk/research/librtmp/srs_publish.c
+++ b/trunk/research/librtmp/srs_publish.c
@@ -55,19 +55,19 @@ int main(int argc, char** argv)
     srs_human_trace("rtmp url: %s", argv[1]);
     srs_rtmp_t rtmp = srs_rtmp_create(argv[1]);
     
-    if (srs_simple_handshake(rtmp) != 0) {
+    if (srs_rtmp_handshake(rtmp) != 0) {
         srs_human_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("simple handshake success");
     
-    if (srs_connect_app(rtmp) != 0) {
+    if (srs_rtmp_connect_app(rtmp) != 0) {
         srs_human_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
     srs_human_trace("connect vhost/app success");
     
-    if (srs_publish_stream(rtmp) != 0) {
+    if (srs_rtmp_publish_stream(rtmp) != 0) {
         srs_human_trace("publish stream failed.");
         goto rtmp_destroy;
     }
@@ -81,7 +81,7 @@ int main(int argc, char** argv)
         
         timestamp += 40;
         
-        if (srs_write_packet(rtmp, type, timestamp, data, size) != 0) {
+        if (srs_rtmp_write_packet(rtmp, type, timestamp, data, size) != 0) {
             goto rtmp_destroy;
         }
         srs_human_trace("sent packet: type=%s, time=%d, size=%d", 
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 494556c55..b64708381 100644
--- a/trunk/src/core/srs_core.hpp
+++ b/trunk/src/core/srs_core.hpp
@@ -31,7 +31,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 // current release version
 #define VERSION_MAJOR       2
 #define VERSION_MINOR       0
-#define VERSION_REVISION    28
+#define VERSION_REVISION    29
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_ROLE "origin/edge server"
diff --git a/trunk/src/libs/srs_librtmp.cpp b/trunk/src/libs/srs_librtmp.cpp
index ca4e8ce32..219dcebf2 100644
--- a/trunk/src/libs/srs_librtmp.cpp
+++ b/trunk/src/libs/srs_librtmp.cpp
@@ -514,6 +514,21 @@ int srs_librtmp_context_connect(Context* context)
 extern "C"{
 #endif
 
+int srs_version_major()
+{
+    return VERSION_MAJOR;
+}
+
+int srs_version_minor()
+{
+    return VERSION_MINOR;
+}
+
+int srs_version_revision()
+{
+    return VERSION_REVISION;
+}
+
 srs_rtmp_t srs_rtmp_create(const char* url)
 {
     Context* context = new Context();
@@ -541,26 +556,26 @@ void srs_rtmp_destroy(srs_rtmp_t rtmp)
     srs_freep(context);
 }
 
-int srs_simple_handshake(srs_rtmp_t rtmp)
+int srs_rtmp_handshake(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = __srs_dns_resolve(rtmp)) != ERROR_SUCCESS) {
+    if ((ret = __srs_rtmp_dns_resolve(rtmp)) != ERROR_SUCCESS) {
         return ret;
     }
     
-    if ((ret = __srs_connect_server(rtmp)) != ERROR_SUCCESS) {
+    if ((ret = __srs_rtmp_connect_server(rtmp)) != ERROR_SUCCESS) {
         return ret;
     }
     
-    if ((ret = __srs_do_simple_handshake(rtmp)) != ERROR_SUCCESS) {
+    if ((ret = __srs_rtmp_do_simple_handshake(rtmp)) != ERROR_SUCCESS) {
         return ret;
     }
     
     return ret;
 }
 
-int __srs_dns_resolve(srs_rtmp_t rtmp)
+int __srs_rtmp_dns_resolve(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -579,7 +594,7 @@ int __srs_dns_resolve(srs_rtmp_t rtmp)
     return ret;
 }
 
-int __srs_connect_server(srs_rtmp_t rtmp)
+int __srs_rtmp_connect_server(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -593,7 +608,7 @@ int __srs_connect_server(srs_rtmp_t rtmp)
     return ret;
 }
 
-int __srs_do_simple_handshake(srs_rtmp_t rtmp)
+int __srs_rtmp_do_simple_handshake(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -613,7 +628,7 @@ int __srs_do_simple_handshake(srs_rtmp_t rtmp)
     return ret;
 }
 
-int srs_connect_app(srs_rtmp_t rtmp)
+int srs_rtmp_connect_app(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -634,7 +649,7 @@ int srs_connect_app(srs_rtmp_t rtmp)
     return ret;
 }
 
-int srs_connect_app2(srs_rtmp_t rtmp,
+int srs_rtmp_connect_app2(srs_rtmp_t rtmp,
     char srs_server_ip[128],char srs_server[128], char srs_primary_authors[128], 
     char srs_version[32], int* srs_id, int* srs_pid
 ) {
@@ -670,7 +685,7 @@ int srs_connect_app2(srs_rtmp_t rtmp,
     return ret;
 }
 
-int srs_play_stream(srs_rtmp_t rtmp)
+int srs_rtmp_play_stream(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -687,7 +702,7 @@ int srs_play_stream(srs_rtmp_t rtmp)
     return ret;
 }
 
-int srs_publish_stream(srs_rtmp_t rtmp)
+int srs_rtmp_publish_stream(srs_rtmp_t rtmp)
 {
     int ret = ERROR_SUCCESS;
     
@@ -701,7 +716,7 @@ int srs_publish_stream(srs_rtmp_t rtmp)
     return ret;
 }
 
-int srs_bandwidth_check(srs_rtmp_t rtmp, 
+int srs_rtmp_bandwidth_check(srs_rtmp_t rtmp, 
     int64_t* start_time, int64_t* end_time, 
     int* play_kbps, int* publish_kbps,
     int* play_bytes, int* publish_bytes,
@@ -737,7 +752,7 @@ int srs_bandwidth_check(srs_rtmp_t rtmp,
     return ret;
 }
 
-int srs_read_packet(srs_rtmp_t rtmp, char* type, u_int32_t* timestamp, char** data, int* size)
+int srs_rtmp_read_packet(srs_rtmp_t rtmp, char* type, u_int32_t* timestamp, char** data, int* size)
 {
     *type = 0;
     *timestamp = 0;
@@ -792,7 +807,7 @@ int srs_read_packet(srs_rtmp_t rtmp, char* type, u_int32_t* timestamp, char** da
     return ret;
 }
 
-int srs_write_packet(srs_rtmp_t rtmp, char type, u_int32_t timestamp, char* data, int size)
+int srs_rtmp_write_packet(srs_rtmp_t rtmp, char type, u_int32_t timestamp, char* data, int size)
 {
     int ret = ERROR_SUCCESS;
     
@@ -843,21 +858,6 @@ int srs_write_packet(srs_rtmp_t rtmp, char type, u_int32_t timestamp, char* data
     return ret;
 }
 
-int srs_version_major()
-{
-    return VERSION_MAJOR;
-}
-
-int srs_version_minor()
-{
-    return VERSION_MINOR;
-}
-
-int srs_version_revision()
-{
-    return VERSION_REVISION;
-}
-
 struct FlvContext
 {
     SrsFileReader reader;
@@ -1356,7 +1356,7 @@ int srs_audio_write_raw_frame(srs_rtmp_t rtmp,
     
     memcpy(p, frame, frame_size);
     
-    return srs_write_packet(context, SRS_RTMP_TYPE_AUDIO, timestamp, data, size);
+    return srs_rtmp_write_packet(context, SRS_RTMP_TYPE_AUDIO, timestamp, data, size);
 }
 
 /**
@@ -1403,7 +1403,7 @@ int __srs_write_h264_packet(Context* context,
     // h.264 raw data.
     memcpy(p, h264_raw_data, h264_raw_size);
     
-    return srs_write_packet(context, SRS_RTMP_TYPE_VIDEO, timestamp, data, size);
+    return srs_rtmp_write_packet(context, SRS_RTMP_TYPE_VIDEO, timestamp, data, size);
 }
 
 /**
diff --git a/trunk/src/libs/srs_librtmp.hpp b/trunk/src/libs/srs_librtmp.hpp
index d1e07e47e..d0638eb12 100644
--- a/trunk/src/libs/srs_librtmp.hpp
+++ b/trunk/src/libs/srs_librtmp.hpp
@@ -84,6 +84,15 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 extern "C"{
 #endif
 
+/*************************************************************
+**************************************************************
+* srs-librtmp version
+**************************************************************
+*************************************************************/
+extern int srs_version_major();
+extern int srs_version_minor();
+extern int srs_version_revision();
+
 /*************************************************************
 **************************************************************
 * RTMP protocol context
@@ -134,19 +143,19 @@ extern void srs_rtmp_destroy(srs_rtmp_t rtmp);
 * not depends on ssl.
 */
 /**
-* srs_simple_handshake equals to invoke:
-*       __srs_dns_resolve()
-*       __srs_connect_server()
-*       __srs_do_simple_handshake()
+* srs_rtmp_handshake equals to invoke:
+*       __srs_rtmp_dns_resolve()
+*       __srs_rtmp_connect_server()
+*       __srs_rtmp_do_simple_handshake()
 * user can use these functions if needed.
 */
-extern int srs_simple_handshake(srs_rtmp_t rtmp);
+extern int srs_rtmp_handshake(srs_rtmp_t rtmp);
 // parse uri, create socket, resolve host
-extern int __srs_dns_resolve(srs_rtmp_t rtmp);
+extern int __srs_rtmp_dns_resolve(srs_rtmp_t rtmp);
 // connect socket to server
-extern int __srs_connect_server(srs_rtmp_t rtmp);
+extern int __srs_rtmp_connect_server(srs_rtmp_t rtmp);
 // do simple handshake over socket.
-extern int __srs_do_simple_handshake(srs_rtmp_t rtmp);
+extern int __srs_rtmp_do_simple_handshake(srs_rtmp_t rtmp);
 
 /**
 * connect to rtmp vhost/app
@@ -156,7 +165,7 @@ extern int __srs_do_simple_handshake(srs_rtmp_t rtmp);
 *
 * @return 0, success; otherswise, failed.
 */
-extern int srs_connect_app(srs_rtmp_t rtmp);
+extern int srs_rtmp_connect_app(srs_rtmp_t rtmp);
 
 /**
 * connect to server, get the debug srs info.
@@ -171,7 +180,7 @@ extern int srs_connect_app(srs_rtmp_t rtmp);
 *
 * @return 0, success; otherswise, failed.
 */
-extern int srs_connect_app2(srs_rtmp_t rtmp,
+extern int srs_rtmp_connect_app2(srs_rtmp_t rtmp,
     char srs_server_ip[128], char srs_server[128], char srs_primary_authors[128], 
     char srs_version[32], int* srs_id, int* srs_pid
 );
@@ -183,7 +192,7 @@ extern int srs_connect_app2(srs_rtmp_t rtmp,
 * next: destroy
 * @return 0, success; otherwise, failed.
 */
-extern int srs_play_stream(srs_rtmp_t rtmp);
+extern int srs_rtmp_play_stream(srs_rtmp_t rtmp);
 
 /**
 * publish a live stream.
@@ -192,7 +201,7 @@ extern int srs_play_stream(srs_rtmp_t rtmp);
 * next: destroy
 * @return 0, success; otherwise, failed.
 */
-extern int srs_publish_stream(srs_rtmp_t rtmp);
+extern int srs_rtmp_publish_stream(srs_rtmp_t rtmp);
 
 /**
 * do bandwidth check with srs server.
@@ -209,7 +218,7 @@ extern int srs_publish_stream(srs_rtmp_t rtmp);
 *
 * @return 0, success; otherswise, failed.
 */
-extern int srs_bandwidth_check(srs_rtmp_t rtmp, 
+extern int srs_rtmp_bandwidth_check(srs_rtmp_t rtmp, 
     int64_t* start_time, int64_t* end_time, 
     int* play_kbps, int* publish_kbps,
     int* play_bytes, int* publish_bytes,
@@ -246,23 +255,13 @@ extern int srs_bandwidth_check(srs_rtmp_t rtmp,
 *
 * @return 0, success; otherswise, failed.
 */
-extern int srs_read_packet(srs_rtmp_t rtmp, 
+extern int srs_rtmp_read_packet(srs_rtmp_t rtmp, 
     char* type, u_int32_t* timestamp, char** data, int* size
 );
-extern int srs_write_packet(srs_rtmp_t rtmp, 
+extern int srs_rtmp_write_packet(srs_rtmp_t rtmp, 
     char type, u_int32_t timestamp, char* data, int size
 );
 
-/*************************************************************
-**************************************************************
-* version apis
-**************************************************************
-*************************************************************/
-// get protocol stack version
-extern int srs_version_major();
-extern int srs_version_minor();
-extern int srs_version_revision();
-
 /*************************************************************
 **************************************************************
 * flv codec
@@ -607,7 +606,7 @@ extern int64_t srs_utils_get_recv_bytes(srs_rtmp_t rtmp);
 
 /**
 * parse the dts and pts by time in header and data in tag,
-* or to parse the RTMP packet by srs_read_packet().
+* or to parse the RTMP packet by srs_rtmp_read_packet().
 *
 * @param time, the timestamp of tag, read by srs_flv_read_tag_header().
 * @param type, the type of tag, read by srs_flv_read_tag_header().
diff --git a/trunk/src/srs/srs.upp b/trunk/src/srs/srs.upp
index da92f3ebf..3320ab387 100755
--- a/trunk/src/srs/srs.upp
+++ b/trunk/src/srs/srs.upp
@@ -129,7 +129,7 @@ file
 	..\utest\srs_utest_reload.cpp,
 	research readonly separator,
 	..\..\research\librtmp\srs_audio_raw_publish.c,
-	..\..\research\librtmp\srs_bandwidth_check.c,
+	..\..\research\librtmp\srs_rtmp_bandwidth_check.c,
 	..\..\research\librtmp\srs_detect_rtmp.c,
 	..\..\research\librtmp\srs_flv_injecter.c,
 	..\..\research\librtmp\srs_flv_parser.c,