diff --git a/trunk/research/librtmp/srs_bandwidth_check.c b/trunk/research/librtmp/srs_bandwidth_check.c
index 7b863eb76..3ce5d66eb 100644
--- a/trunk/research/librtmp/srs_bandwidth_check.c
+++ b/trunk/research/librtmp/srs_bandwidth_check.c
@@ -80,31 +80,31 @@ int main(int argc, char** argv)
     
     rtmp = srs_rtmp_create2(argv[1]);
     
-    srs_trace("bandwidth check/test url: %s", argv[1]);
+    srs_lib_trace("bandwidth check/test url: %s", argv[1]);
     
     if ((ret = srs_simple_handshake(rtmp)) != 0) {
-        srs_trace("simple handshake failed.");
+        srs_lib_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
-    srs_trace("simple handshake success");
+    srs_lib_trace("simple handshake success");
     
     if ((ret = srs_connect_app2(rtmp, 
         srs_server_ip, srs_server, srs_primary_authors, srs_version, &srs_id, &srs_pid)) != 0) {
-        srs_trace("connect vhost/app failed.");
+        srs_lib_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
-    srs_trace("connect vhost/app success");
+    srs_lib_trace("connect vhost/app success");
     
     if ((ret = srs_bandwidth_check(rtmp, 
         &start_time, &end_time, &play_kbps, &publish_kbps,
         &play_bytes, &publish_bytes, &play_duration, &publish_duration)) != 0
     ) {
-        srs_trace("bandwidth check/test failed.");
+        srs_lib_trace("bandwidth check/test failed.");
         goto rtmp_destroy;
     }
-    srs_trace("bandwidth check/test success");
+    srs_lib_trace("bandwidth check/test success");
     
-    srs_trace("\n%s, %s\n"
+    srs_lib_trace("\n%s, %s\n"
         "%s, %s, srs_pid=%d, srs_id=%d\n"
         "duration: %dms(%d+%d)\n"
         "play: %dkbps\n"
@@ -136,8 +136,8 @@ rtmp_destroy:
         (int)(end_time - start_time), play_duration, publish_duration,
         play_kbps, publish_kbps);
     
-    srs_trace("");
-    srs_trace("completed");
+    srs_lib_trace("");
+    srs_lib_trace("completed");
     
     return ret;
 }
diff --git a/trunk/research/librtmp/srs_detect_rtmp.c b/trunk/research/librtmp/srs_detect_rtmp.c
index 13a2d6818..a1b12d121 100644
--- a/trunk/research/librtmp/srs_detect_rtmp.c
+++ b/trunk/research/librtmp/srs_detect_rtmp.c
@@ -79,55 +79,55 @@ int main(int argc, char** argv)
     duration = atoi(argv[2]);
     timeout = atoi(argv[3]);
     
-    srs_trace("rtmp url: %s", rtmp_url);
-    srs_trace("duration: %ds, timeout:%ds", duration, timeout);
+    srs_lib_trace("rtmp url: %s", rtmp_url);
+    srs_lib_trace("duration: %ds, timeout:%ds", duration, timeout);
     
     if (duration <= 0 || timeout <= 0) {
-        srs_trace("duration and timeout must be positive.");
+        srs_lib_trace("duration and timeout must be positive.");
         exit(-2);
     }
     
     rtmp = srs_rtmp_create(rtmp_url);
     
     if ((ret = __srs_dns_resolve(rtmp)) != 0) {
-        srs_trace("dns resolve failed. ret=%d", ret);
+        srs_lib_trace("dns resolve failed. ret=%d", ret);
         goto rtmp_destroy;
     }
-    srs_trace("dns resolve success");
+    srs_lib_trace("dns resolve success");
     time_dns_resolve = srs_get_time_ms();
     
     if ((ret = __srs_connect_server(rtmp)) != 0) {
-        srs_trace("socket connect failed. ret=%d", ret);
+        srs_lib_trace("socket connect failed. ret=%d", ret);
         goto rtmp_destroy;
     }
-    srs_trace("socket connect success");
+    srs_lib_trace("socket connect success");
     time_socket_connect = srs_get_time_ms();
     
     if ((ret = __srs_do_simple_handshake(rtmp)) != 0) {
-        srs_trace("do simple handshake failed. ret=%d", ret);
+        srs_lib_trace("do simple handshake failed. ret=%d", ret);
         goto rtmp_destroy;
     }
-    srs_trace("do simple handshake success");
+    srs_lib_trace("do simple handshake success");
     
     if ((ret = srs_connect_app(rtmp)) != 0) {
-        srs_trace("connect vhost/app failed. ret=%d", ret);
+        srs_lib_trace("connect vhost/app failed. ret=%d", ret);
         goto rtmp_destroy;
     }
-    srs_trace("connect vhost/app success");
+    srs_lib_trace("connect vhost/app success");
     
     if ((ret = srs_play_stream(rtmp)) != 0) {
-        srs_trace("play stream failed. ret=%d", ret);
+        srs_lib_trace("play stream failed. ret=%d", ret);
         goto rtmp_destroy;
     }
-    srs_trace("play stream success");
+    srs_lib_trace("play stream success");
     time_play_stream = srs_get_time_ms();
     
     for (;;) {
         if ((ret = srs_read_packet(rtmp, &type, &timestamp, &data, &size)) != 0) {
-            srs_trace("read packet failed. ret=%d", ret);
+            srs_lib_trace("read packet failed. ret=%d", ret);
             goto rtmp_destroy;
         }
-        srs_trace("got packet: type=%s, time=%d, size=%d", 
+        srs_lib_trace("got packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), timestamp, size);
         
         if (SRS_RTMP_TYPE_VIDEO == type || SRS_RTMP_TYPE_AUDIO == type) {
@@ -142,12 +142,12 @@ int main(int argc, char** argv)
         free(data);
         
         if (srs_get_time_ms() - time_startup > timeout * 1000) {
-            srs_trace("timeout, terminate.");
+            srs_lib_trace("timeout, terminate.");
             goto rtmp_destroy;
         }
         
         if ((timestamp - basetime) > duration * 1000) {
-            srs_trace("duration exceed, terminate.");
+            srs_lib_trace("duration exceed, terminate.");
             goto rtmp_destroy;
         }
     }
@@ -196,8 +196,8 @@ rtmp_destroy:
         "\"remark2\": \"if code is not 0, user must ignore all data\""
     );
     
-    srs_trace("");
-    srs_trace("completed");
+    srs_lib_trace("");
+    srs_lib_trace("completed");
     
     return ret;
 }
diff --git a/trunk/research/librtmp/srs_flv_injecter.c b/trunk/research/librtmp/srs_flv_injecter.c
index e053ee047..8d78ce2c1 100644
--- a/trunk/research/librtmp/srs_flv_injecter.c
+++ b/trunk/research/librtmp/srs_flv_injecter.c
@@ -76,9 +76,9 @@ int main(int argc, char** argv)
     tmp_file = (char*)malloc(tmp_file_size);
     snprintf(tmp_file, tmp_file_size, "%s.tmp", out_flv_file);
     
-    srs_trace("input:  %s", in_flv_file);
-    srs_trace("output:  %s", out_flv_file);
-    srs_trace("tmp_file:  %s", tmp_file);
+    srs_lib_trace("input:  %s", in_flv_file);
+    srs_lib_trace("output:  %s", out_flv_file);
+    srs_lib_trace("tmp_file:  %s", tmp_file);
 
     ret = process(in_flv_file, tmp_file, &ic, &oc);
     
@@ -89,13 +89,13 @@ int main(int argc, char** argv)
         unlink(tmp_file);
         if (ret == ERROR_INJECTED) {
             ret = 0;
-            srs_trace("file already injected.");
+            srs_lib_trace("file already injected.");
         } else {
-            srs_trace("error, remove tmp file.");
+            srs_lib_trace("error, remove tmp file.");
         }
     } else {
         rename(tmp_file, out_flv_file);
-        srs_trace("completed, rename to %s", out_flv_file);
+        srs_lib_trace("completed, rename to %s", out_flv_file);
     }
     
     free(tmp_file);
@@ -123,14 +123,14 @@ int process(const char* in_flv_file, const char* out_flv_file, srs_flv_t* pic, s
     
     if ((ic = srs_flv_open_read(in_flv_file)) == NULL) {
         ret = 2;
-        srs_trace("open input flv file failed. ret=%d", ret);
+        srs_lib_trace("open input flv file failed. ret=%d", ret);
         return ret;
     }
     *pic = ic;
     
     if ((oc = srs_flv_open_write(out_flv_file)) == NULL) {
         ret = 2;
-        srs_trace("open output flv file failed. ret=%d", ret);
+        srs_lib_trace("open output flv file failed. ret=%d", ret);
         return ret;
     }
     *poc = oc;
@@ -164,13 +164,13 @@ int parse_metadata(char* data, int size, srs_amf0_t* pname, srs_amf0_t* pdata)
     *pname = srs_amf0_parse(data, size, &nparsed);
     
     if (*pname == NULL || nparsed >= size) {
-        srs_trace("invalid amf0 name data.");
+        srs_lib_trace("invalid amf0 name data.");
         return -1;
     }
     
     *pdata = srs_amf0_parse(data + nparsed, size - nparsed, &nparsed);
     if (*pdata == NULL || nparsed > size) {
-        srs_trace("invalid amf0 value data");
+        srs_lib_trace("invalid amf0 value data");
         return -1;
     }
     
@@ -206,22 +206,22 @@ int build_keyframes(srs_flv_t ic, srs_amf0_t *pname, srs_amf0_t* pdata, srs_amf0
         return ret;
     }
     
-    srs_trace("build keyframe infos from flv");
+    srs_lib_trace("build keyframe infos from flv");
     for (;;) {
         offset = srs_flv_tellg(ic);
         
         // tag header
         if ((ret = srs_flv_read_tag_header(ic, &type, &size, &timestamp)) != 0) {
             if (srs_flv_is_eof(ret)) {
-                srs_trace("parse completed.");
+                srs_lib_trace("parse completed.");
                 return 0;
             }
-            srs_trace("flv get packet failed. ret=%d", ret);
+            srs_lib_trace("flv get packet failed. ret=%d", ret);
             return ret;
         }
         
         if (size <= 0) {
-            srs_trace("invalid size=%d", size);
+            srs_lib_trace("invalid size=%d", size);
             return ret;
         }
         
@@ -343,20 +343,20 @@ int do_inject_flv(srs_flv_t ic, srs_flv_t oc, srs_amf0_t amf0_name, srs_amf0_t a
         free(data);
     }
     
-    srs_trace("build keyframe infos from flv");
+    srs_lib_trace("build keyframe infos from flv");
     for (;;) {
         // tag header
         if ((ret = srs_flv_read_tag_header(ic, &type, &size, &timestamp)) != 0) {
             if (srs_flv_is_eof(ret)) {
-                srs_trace("parse completed.");
+                srs_lib_trace("parse completed.");
                 return 0;
             }
-            srs_trace("flv get packet failed. ret=%d", ret);
+            srs_lib_trace("flv get packet failed. ret=%d", ret);
             return ret;
         }
         
         if (size <= 0) {
-            srs_trace("invalid size=%d", size);
+            srs_lib_trace("invalid size=%d", size);
             break;
         }
         
diff --git a/trunk/research/librtmp/srs_flv_parser.c b/trunk/research/librtmp/srs_flv_parser.c
index abfca6a1b..fa4acd86a 100644
--- a/trunk/research/librtmp/srs_flv_parser.c
+++ b/trunk/research/librtmp/srs_flv_parser.c
@@ -61,11 +61,11 @@ int main(int argc, char** argv)
     }
     
     in_flv_file = argv[1];
-    srs_trace("input:  %s", in_flv_file);
+    srs_lib_trace("input:  %s", in_flv_file);
 
     if ((flv = srs_flv_open_read(in_flv_file)) == NULL) {
         ret = 2;
-        srs_trace("open flv file failed. ret=%d", ret);
+        srs_lib_trace("open flv file failed. ret=%d", ret);
         return ret;
     }
     
@@ -147,12 +147,12 @@ int parse_script_data(u_int32_t timestamp, char* data, int size, int64_t offset)
     // amf0
     amf0_name = srs_amf0_parse(data, size, &nparsed);
     if (amf0_name == NULL || nparsed >= size) {
-        srs_trace("invalid amf0 name data.");
+        srs_lib_trace("invalid amf0 name data.");
         return -1;
     }
     amf0_data = srs_amf0_parse(data + nparsed, size - nparsed, &nparsed);
     
-    srs_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
+    srs_lib_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
         "offset=%d\n[+00, +15] %s\n[-15, EOF] %s\n%s%s", 
         srs_type2string(SRS_RTMP_TYPE_SCRIPT), timestamp, size + FLV_HEADER_SIZE, size, 
         (int)offset, hbuf, tbuf, 
@@ -178,7 +178,7 @@ int parse_audio_data(u_int32_t timestamp, char* data, int size, int64_t offset)
     // bytes
     parse_bytes(data, size, hbuf, sizeof(hbuf), tbuf, sizeof(tbuf), 16);
     
-    srs_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
+    srs_lib_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
         "offset=%d\n[+00, +15] %s\n[-15, EOF] %s\n", 
         srs_type2string(SRS_RTMP_TYPE_AUDIO), timestamp, size + FLV_HEADER_SIZE, size, 
         (int)offset, hbuf, tbuf);
@@ -196,7 +196,7 @@ int parse_video_data(u_int32_t timestamp, char* data, int size, int64_t offset)
     // bytes
     parse_bytes(data, size, hbuf, sizeof(hbuf), tbuf, sizeof(tbuf), 16);
     
-    srs_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
+    srs_lib_trace("packet type=%s, time=%d, size=%d, data-size=%d, \n"
         "offset=%d\n[+00, +15] %s\n[-15, EOF] %s\n", 
         srs_type2string(SRS_RTMP_TYPE_VIDEO), timestamp, size + FLV_HEADER_SIZE, size, 
         (int)offset, hbuf, tbuf);
@@ -221,22 +221,22 @@ int parse_flv(srs_flv_t flv)
         return ret;
     }
     
-    srs_trace("start parse flv");
+    srs_lib_trace("start parse flv");
     for (;;) {
         offset = srs_flv_tellg(flv);
         
         // tag header
         if ((ret = srs_flv_read_tag_header(flv, &type, &size, &timestamp)) != 0) {
             if (srs_flv_is_eof(ret)) {
-                srs_trace("parse completed.");
+                srs_lib_trace("parse completed.");
                 return 0;
             }
-            srs_trace("flv get packet failed. ret=%d", ret);
+            srs_lib_trace("flv get packet failed. ret=%d", ret);
             return ret;
         }
         
         if (size <= 0) {
-            srs_trace("invalid size=%d", size);
+            srs_lib_trace("invalid size=%d", size);
             break;
         }
         
diff --git a/trunk/research/librtmp/srs_h264_raw_publish.c b/trunk/research/librtmp/srs_h264_raw_publish.c
index a2b71829e..db16b9025 100644
--- a/trunk/research/librtmp/srs_h264_raw_publish.c
+++ b/trunk/research/librtmp/srs_h264_raw_publish.c
@@ -44,7 +44,7 @@ int read_h264_frame(char* data, int size, char** pp, int* pnb_start_code, int fp
     // we search the h264 frame from the buffer which cached the h264 data.
     // please get h264 raw data from device, it always a encoded frame.
     if (!srs_h264_startswith_annexb(p, size - (p - data), pnb_start_code)) {
-        srs_trace("h264 raw data invalid.");
+        srs_lib_trace("h264 raw data invalid.");
         return -1;
     }
     
@@ -63,7 +63,7 @@ int read_h264_frame(char* data, int size, char** pp, int* pnb_start_code, int fp
     *pp = p;
     *frame_size = p - *frame;
     if (*frame_size <= 0) {
-        srs_trace("h264 raw data invalid.");
+        srs_lib_trace("h264 raw data invalid.");
         return -1;
     }
     
@@ -95,32 +95,32 @@ int main(int argc, char** argv)
     
     const char* raw_file = argv[1];
     const char* rtmp_url = argv[2];
-    srs_trace("raw_file=%s, rtmp_url=%s", raw_file, rtmp_url);
+    srs_lib_trace("raw_file=%s, rtmp_url=%s", raw_file, rtmp_url);
     
     // open file
     int raw_fd = open(raw_file, O_RDONLY);
     if (raw_fd < 0) {
-        srs_trace("open h264 raw file %s failed.", raw_fd);
+        srs_lib_trace("open h264 raw file %s failed.", raw_fd);
         goto rtmp_destroy;
     }
     
     off_t file_size = lseek(raw_fd, 0, SEEK_END);
     if (file_size <= 0) {
-        srs_trace("h264 raw file %s empty.", raw_file);
+        srs_lib_trace("h264 raw file %s empty.", raw_file);
         goto rtmp_destroy;
     }
-    srs_trace("read entirely h264 raw file, size=%dKB", (int)(file_size / 1024));
+    srs_lib_trace("read entirely h264 raw file, size=%dKB", (int)(file_size / 1024));
     
     char* h264_raw = (char*)malloc(file_size);
     if (!h264_raw) {
-        srs_trace("alloc raw buffer failed for file %s.", raw_file);
+        srs_lib_trace("alloc raw buffer failed for file %s.", raw_file);
         goto rtmp_destroy;
     }
     
     lseek(raw_fd, 0, SEEK_SET);
     ssize_t nb_read = 0;
     if ((nb_read = read(raw_fd, h264_raw, file_size)) != file_size) {
-        srs_trace("buffer %s failed, expect=%dKB, actual=%dKB.", 
+        srs_lib_trace("buffer %s failed, expect=%dKB, actual=%dKB.", 
             raw_file, (int)(file_size / 1024), (int)(nb_read / 1024));
         goto rtmp_destroy;
     }
@@ -129,22 +129,22 @@ int main(int argc, char** argv)
     srs_rtmp_t rtmp = srs_rtmp_create(rtmp_url);
     
     if (srs_simple_handshake(rtmp) != 0) {
-        srs_trace("simple handshake failed.");
+        srs_lib_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
-    srs_trace("simple handshake success");
+    srs_lib_trace("simple handshake success");
     
     if (srs_connect_app(rtmp) != 0) {
-        srs_trace("connect vhost/app failed.");
+        srs_lib_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
-    srs_trace("connect vhost/app success");
+    srs_lib_trace("connect vhost/app success");
     
     if (srs_publish_stream(rtmp) != 0) {
-        srs_trace("publish stream failed.");
+        srs_lib_trace("publish stream failed.");
         goto rtmp_destroy;
     }
-    srs_trace("publish stream success");
+    srs_lib_trace("publish stream success");
     
     u_int32_t dts = 0;
     u_int32_t pts = 0;
@@ -161,27 +161,27 @@ int main(int argc, char** argv)
         if (read_h264_frame(h264_raw, file_size, &p, &nb_start_code, fps, 
             &data, &size, &dts, &pts) < 0
         ) {
-            srs_trace("read a frame from file buffer failed.");
+            srs_lib_trace("read a frame from file buffer failed.");
             goto rtmp_destroy;
         }
         
         // send out the h264 packet over RTMP
         if (srs_write_h264_raw_frames(rtmp, data, size, dts, pts) != 0) {
-            srs_trace("send h264 raw data failed.");
+            srs_lib_trace("send h264 raw data failed.");
             goto rtmp_destroy;
         }
         
         // 5bits, 7.3.1 NAL unit syntax, 
         // H.264-AVC-ISO_IEC_14496-10.pdf, page 44.
         u_int8_t nut = (char)data[nb_start_code] & 0x1f;
-        srs_trace("sent packet: type=%s, time=%d, size=%d, fps=%d, b[%d]=%#x(%s)", 
+        srs_lib_trace("sent packet: type=%s, time=%d, size=%d, fps=%d, b[%d]=%#x(%s)", 
             srs_type2string(SRS_RTMP_TYPE_VIDEO), dts, size, fps, nb_start_code, (char)data[nb_start_code],
             (nut == 7? "SPS":(nut == 8? "PPS":(nut == 5? "I":(nut == 1? "P":"Unknown")))));
         
         // @remark, when use encode device, it not need to sleep.
         usleep(1000 / fps * 1000);
     }
-    srs_trace("h264 raw data completed");
+    srs_lib_trace("h264 raw data completed");
     
 rtmp_destroy:
     srs_rtmp_destroy(rtmp);
diff --git a/trunk/research/librtmp/srs_ingest_flv.c b/trunk/research/librtmp/srs_ingest_flv.c
index 669b960d2..95f6d69bc 100644
--- a/trunk/research/librtmp/srs_ingest_flv.c
+++ b/trunk/research/librtmp/srs_ingest_flv.c
@@ -89,19 +89,19 @@ int main(int argc, char** argv)
         }
     }
     
-    srs_trace("input:  %s", in_flv_file);
-    srs_trace("output: %s", out_rtmp_url);
+    srs_lib_trace("input:  %s", in_flv_file);
+    srs_lib_trace("output: %s", out_rtmp_url);
 
     if ((flv = srs_flv_open_read(in_flv_file)) == NULL) {
         ret = 2;
-        srs_trace("open flv file failed. ret=%d", ret);
+        srs_lib_trace("open flv file failed. ret=%d", ret);
         return ret;
     }
     
     ortmp = srs_rtmp_create(out_rtmp_url);
 
     ret = proxy(flv, ortmp);
-    srs_trace("ingest flv to RTMP completed");
+    srs_lib_trace("ingest flv to RTMP completed");
     
     srs_rtmp_destroy(ortmp);
     srs_flv_close(flv);
@@ -118,20 +118,20 @@ int do_proxy(srs_flv_t flv, srs_rtmp_t ortmp, int64_t re, u_int32_t* ptimestamp)
     int size;
     char* data = NULL;
     
-    srs_trace("start ingest flv to RTMP stream");
+    srs_lib_trace("start ingest flv to RTMP stream");
     for (;;) {
         // tag header
         if ((ret = srs_flv_read_tag_header(flv, &type, &size, ptimestamp)) != 0) {
             if (srs_flv_is_eof(ret)) {
-                srs_trace("parse completed.");
+                srs_lib_trace("parse completed.");
                 return 0;
             }
-            srs_trace("flv get packet failed. ret=%d", ret);
+            srs_lib_trace("flv get packet failed. ret=%d", ret);
             return ret;
         }
         
         if (size <= 0) {
-            srs_trace("invalid size=%d", size);
+            srs_lib_trace("invalid size=%d", size);
             break;
         }
         
@@ -142,10 +142,10 @@ int do_proxy(srs_flv_t flv, srs_rtmp_t ortmp, int64_t re, u_int32_t* ptimestamp)
         }
         
         if ((ret = srs_write_packet(ortmp, type, *ptimestamp, data, size)) != 0) {
-            srs_trace("irtmp get packet failed. ret=%d", ret);
+            srs_lib_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
-        srs_verbose("ortmp sent packet: type=%s, time=%d, size=%d", 
+        srs_lib_verbose("ortmp sent packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), *ptimestamp, size);
         
         re_update(re, *ptimestamp);
@@ -182,22 +182,22 @@ int connect_oc(srs_rtmp_t ortmp)
     int ret = 0;
     
     if ((ret = srs_simple_handshake(ortmp)) != 0) {
-        srs_trace("ortmp simple handshake failed. ret=%d", ret);
+        srs_lib_trace("ortmp simple handshake failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp simple handshake success");
+    srs_lib_trace("ortmp simple handshake success");
     
     if ((ret = srs_connect_app(ortmp)) != 0) {
-        srs_trace("ortmp connect vhost/app failed. ret=%d", ret);
+        srs_lib_trace("ortmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp connect vhost/app success");
+    srs_lib_trace("ortmp connect vhost/app success");
     
     if ((ret = srs_publish_stream(ortmp)) != 0) {
-        srs_trace("ortmp publish stream failed. ret=%d", ret);
+        srs_lib_trace("ortmp publish stream failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp publish stream success");
+    srs_lib_trace("ortmp publish stream success");
     
     return ret;
 }
@@ -209,16 +209,16 @@ int64_t re_create()
     
     // use the starttime to get the deviation
     int64_t deviation = re - tools_main_entrance_startup_time;
-    srs_trace("deviation is %d ms, pulse is %d ms", (int)(deviation), (int)(RE_PULSE_MS));
+    srs_lib_trace("deviation is %d ms, pulse is %d ms", (int)(deviation), (int)(RE_PULSE_MS));
     
     // so, we adjust time to max(0, deviation)
     // because the last pulse, we already sleeped
     int adjust = (int)(deviation);
     if (adjust > 0) {
-        srs_trace("adjust re time for %d ms", adjust);
+        srs_lib_trace("adjust re time for %d ms", adjust);
         re -= adjust;
     } else {
-        srs_trace("no need to adjust re time");
+        srs_lib_trace("no need to adjust re time");
     }
     
     return re;
@@ -239,7 +239,7 @@ void re_cleanup(int64_t re, u_int32_t time)
     int64_t now = srs_get_time_ms();
     int64_t diff = time - (now -re);
     if (diff > 0) {
-        srs_trace("re_cleanup sleep for the last pulse for %d ms", (int)diff);
+        srs_lib_trace("re_cleanup sleep for the last pulse for %d ms", (int)diff);
         usleep(diff * 1000);
     }
 }
diff --git a/trunk/research/librtmp/srs_ingest_rtmp.c b/trunk/research/librtmp/srs_ingest_rtmp.c
index 1f3470480..48a370238 100644
--- a/trunk/research/librtmp/srs_ingest_rtmp.c
+++ b/trunk/research/librtmp/srs_ingest_rtmp.c
@@ -74,14 +74,14 @@ int main(int argc, char** argv)
         }
     }
     
-    srs_trace("input:  %s", in_rtmp_url);
-    srs_trace("output: %s", out_rtmp_url);
+    srs_lib_trace("input:  %s", in_rtmp_url);
+    srs_lib_trace("output: %s", out_rtmp_url);
     
     irtmp = srs_rtmp_create(in_rtmp_url);
     ortmp = srs_rtmp_create(out_rtmp_url);
 
     ret = proxy(irtmp, ortmp);
-    srs_trace("proxy completed");
+    srs_lib_trace("proxy completed");
     
     srs_rtmp_destroy(irtmp);
     srs_rtmp_destroy(ortmp);
@@ -105,20 +105,20 @@ int proxy(srs_rtmp_t irtmp, srs_rtmp_t ortmp)
         return ret;
     }
     
-    srs_trace("start proxy RTMP stream");
+    srs_lib_trace("start proxy RTMP stream");
     for (;;) {
         if ((ret = srs_read_packet(irtmp, &type, &timestamp, &data, &size)) != 0) {
-            srs_trace("irtmp get packet failed. ret=%d", ret);
+            srs_lib_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
-        srs_verbose("irtmp got packet: type=%s, time=%d, size=%d", 
+        srs_lib_verbose("irtmp got packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), timestamp, size);
         
         if ((ret = srs_write_packet(ortmp, type, timestamp, data, size)) != 0) {
-            srs_trace("irtmp get packet failed. ret=%d", ret);
+            srs_lib_trace("irtmp get packet failed. ret=%d", ret);
             return ret;
         }
-        srs_verbose("ortmp sent packet: type=%s, time=%d, size=%d", 
+        srs_lib_verbose("ortmp sent packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), timestamp, size);
     }
     
@@ -130,22 +130,22 @@ int connect_ic(srs_rtmp_t irtmp)
     int ret = 0;
     
     if ((ret = srs_simple_handshake(irtmp)) != 0) {
-        srs_trace("irtmp simple handshake failed. ret=%d", ret);
+        srs_lib_trace("irtmp simple handshake failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("irtmp simple handshake success");
+    srs_lib_trace("irtmp simple handshake success");
     
     if ((ret = srs_connect_app(irtmp)) != 0) {
-        srs_trace("irtmp connect vhost/app failed. ret=%d", ret);
+        srs_lib_trace("irtmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("irtmp connect vhost/app success");
+    srs_lib_trace("irtmp connect vhost/app success");
     
     if ((ret = srs_play_stream(irtmp)) != 0) {
-        srs_trace("irtmp play stream failed. ret=%d", ret);
+        srs_lib_trace("irtmp play stream failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("irtmp play stream success");
+    srs_lib_trace("irtmp play stream success");
     
     return ret;
 }
@@ -155,22 +155,22 @@ int connect_oc(srs_rtmp_t ortmp)
     int ret = 0;
     
     if ((ret = srs_simple_handshake(ortmp)) != 0) {
-        srs_trace("ortmp simple handshake failed. ret=%d", ret);
+        srs_lib_trace("ortmp simple handshake failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp simple handshake success");
+    srs_lib_trace("ortmp simple handshake success");
     
     if ((ret = srs_connect_app(ortmp)) != 0) {
-        srs_trace("ortmp connect vhost/app failed. ret=%d", ret);
+        srs_lib_trace("ortmp connect vhost/app failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp connect vhost/app success");
+    srs_lib_trace("ortmp connect vhost/app success");
     
     if ((ret = srs_publish_stream(ortmp)) != 0) {
-        srs_trace("ortmp publish stream failed. ret=%d", ret);
+        srs_lib_trace("ortmp publish stream failed. ret=%d", ret);
         return ret;
     }
-    srs_trace("ortmp publish stream success");
+    srs_lib_trace("ortmp publish stream success");
     
     return ret;
 }
diff --git a/trunk/research/librtmp/srs_play.c b/trunk/research/librtmp/srs_play.c
index 7bf431f58..1106f3a22 100644
--- a/trunk/research/librtmp/srs_play.c
+++ b/trunk/research/librtmp/srs_play.c
@@ -44,26 +44,26 @@ int main(int argc, char** argv)
         exit(-1);
     }
     
-    srs_trace("rtmp url: %s", argv[1]);
+    srs_lib_trace("rtmp url: %s", argv[1]);
     srs_rtmp_t rtmp = srs_rtmp_create(argv[1]);
     
     if (srs_simple_handshake(rtmp) != 0) {
-        srs_trace("simple handshake failed.");
+        srs_lib_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
-    srs_trace("simple handshake success");
+    srs_lib_trace("simple handshake success");
     
     if (srs_connect_app(rtmp) != 0) {
-        srs_trace("connect vhost/app failed.");
+        srs_lib_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
-    srs_trace("connect vhost/app success");
+    srs_lib_trace("connect vhost/app success");
     
     if (srs_play_stream(rtmp) != 0) {
-        srs_trace("play stream failed.");
+        srs_lib_trace("play stream failed.");
         goto rtmp_destroy;
     }
-    srs_trace("play stream success");
+    srs_lib_trace("play stream success");
     
     for (;;) {
         int type, size;
@@ -73,7 +73,7 @@ int main(int argc, char** argv)
         if (srs_read_packet(rtmp, &type, &timestamp, &data, &size) != 0) {
             goto rtmp_destroy;
         }
-        srs_trace("got packet: type=%s, time=%d, size=%d", 
+        srs_lib_trace("got packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), timestamp, size);
         
         free(data);
diff --git a/trunk/research/librtmp/srs_publish.c b/trunk/research/librtmp/srs_publish.c
index 85e2d3d88..0865a4b98 100644
--- a/trunk/research/librtmp/srs_publish.c
+++ b/trunk/research/librtmp/srs_publish.c
@@ -47,31 +47,31 @@ int main(int argc, char** argv)
     
     // warn it .
     // @see: https://github.com/winlinvip/simple-rtmp-server/issues/126
-    srs_trace("\033[33m%s\033[0m", 
+    srs_lib_trace("\033[33m%s\033[0m", 
         "[warning] it's only a sample to use librtmp. "
         "please never use it to publish and test forward/transcode/edge/HLS whatever. "
         "you should refer to this tool to use the srs-librtmp to publish the real media stream."
         "read about: https://github.com/winlinvip/simple-rtmp-server/issues/126");
-    srs_trace("rtmp url: %s", argv[1]);
+    srs_lib_trace("rtmp url: %s", argv[1]);
     srs_rtmp_t rtmp = srs_rtmp_create(argv[1]);
     
     if (srs_simple_handshake(rtmp) != 0) {
-        srs_trace("simple handshake failed.");
+        srs_lib_trace("simple handshake failed.");
         goto rtmp_destroy;
     }
-    srs_trace("simple handshake success");
+    srs_lib_trace("simple handshake success");
     
     if (srs_connect_app(rtmp) != 0) {
-        srs_trace("connect vhost/app failed.");
+        srs_lib_trace("connect vhost/app failed.");
         goto rtmp_destroy;
     }
-    srs_trace("connect vhost/app success");
+    srs_lib_trace("connect vhost/app success");
     
     if (srs_publish_stream(rtmp) != 0) {
-        srs_trace("publish stream failed.");
+        srs_lib_trace("publish stream failed.");
         goto rtmp_destroy;
     }
-    srs_trace("publish stream success");
+    srs_lib_trace("publish stream success");
     
     u_int32_t timestamp = 0;
     for (;;) {
@@ -84,7 +84,7 @@ int main(int argc, char** argv)
         if (srs_write_packet(rtmp, type, timestamp, data, size) != 0) {
             goto rtmp_destroy;
         }
-        srs_trace("sent packet: type=%s, time=%d, size=%d", 
+        srs_lib_trace("sent packet: type=%s, time=%d, size=%d", 
             srs_type2string(type), timestamp, size);
         
         usleep(40 * 1000);
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 343887979..3cae04a8c 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    11
+#define VERSION_REVISION    12
 // server info.
 #define RTMP_SIG_SRS_KEY "SRS"
 #define RTMP_SIG_SRS_ROLE "origin/edge server"
diff --git a/trunk/src/libs/srs_librtmp.hpp b/trunk/src/libs/srs_librtmp.hpp
index 9dbb82d39..9eccd7511 100644
--- a/trunk/src/libs/srs_librtmp.hpp
+++ b/trunk/src/libs/srs_librtmp.hpp
@@ -237,8 +237,8 @@ extern int64_t srs_get_nrecv_bytes(srs_rtmp_t rtmp);
 
 // log to console, for use srs-librtmp application.
 extern const char* srs_format_time();
-#define srs_trace(msg, ...) printf("[%s] ", srs_format_time());printf(msg, ##__VA_ARGS__);printf("\n")
-#define srs_verbose(msg, ...) printf("[%s] ", srs_format_time());printf(msg, ##__VA_ARGS__);printf("\n")
+#define srs_lib_trace(msg, ...) printf("[%s] ", srs_format_time());printf(msg, ##__VA_ARGS__);printf("\n")
+#define srs_lib_verbose(msg, ...) printf("[%s] ", srs_format_time());printf(msg, ##__VA_ARGS__);printf("\n")
 
 /*************************************************************
 **************************************************************