diff --git a/README.md b/README.md
index fe3e7cdaef..48fe5d5014 100755
--- a/README.md
+++ b/README.md
@@ -340,6 +340,7 @@ Remark:
 
 ## History
 
+* v2.0, 2016-09-05, fix memory leak at source. 2.0.214
 * v2.0, 2016-09-05, fix memory leak at handshake. 2.0.213
 * v2.0, 2016-09-04, support valgrind for [patched st](https://github.com/ossrs/state-threads/issues/2).
 * v2.0, 2016-09-03, support all arm for [patched st](https://github.com/ossrs/state-threads/issues/1). 2.0.212
diff --git a/trunk/src/app/srs_app_log.cpp b/trunk/src/app/srs_app_log.cpp
index 6ebf6ced61..e82319aae6 100644
--- a/trunk/src/app/srs_app_log.cpp
+++ b/trunk/src/app/srs_app_log.cpp
@@ -71,6 +71,15 @@ int SrsThreadContext::set_id(int v)
     return ov;
 }
 
+void SrsThreadContext::clear_cid()
+{
+    st_thread_t self = st_thread_self();
+    std::map<st_thread_t, int>::iterator it = cache.find(self);
+    if (it != cache.end()) {
+        cache.erase(it);
+    }
+}
+
 // the max size of a line of log.
 #define LOG_MAX_SIZE 4096
 
diff --git a/trunk/src/app/srs_app_log.hpp b/trunk/src/app/srs_app_log.hpp
index 6cfd719e08..df18e2b843 100644
--- a/trunk/src/app/srs_app_log.hpp
+++ b/trunk/src/app/srs_app_log.hpp
@@ -54,6 +54,8 @@ class SrsThreadContext : public ISrsThreadContext
     virtual int generate_id();
     virtual int get_id();
     virtual int set_id(int v);
+public:
+    virtual void clear_cid();
 };
 
 /**
diff --git a/trunk/src/app/srs_app_server.cpp b/trunk/src/app/srs_app_server.cpp
index 4d6876b2d0..23fc68b0cd 100755
--- a/trunk/src/app/srs_app_server.cpp
+++ b/trunk/src/app/srs_app_server.cpp
@@ -866,6 +866,11 @@ int SrsServer::cycle()
     srs_warn("main cycle terminated, system quit normally.");
     dispose();
     srs_trace("srs terminated");
+    
+    // for valgrind to detect.
+    srs_freep(_srs_config);
+    srs_freep(_srs_log);
+    
     exit(0);
 #endif
     
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 4295a8fd09..98b87c0eeb 100644
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -58,6 +58,9 @@ using namespace std;
 // when got these videos or audios, pure audio or video, mix ok.
 #define SRS_MIX_CORRECT_PURE_AV 10
 
+// the time to cleanup source in ms.
+#define SRS_SOURCE_CLEANUP 30000
+
 int _srs_time_jitter_string2int(std::string time_jitter)
 {
     if (time_jitter == "full") {
@@ -796,16 +799,39 @@ void SrsSource::dispose_all()
 }
 
 int SrsSource::cycle_all()
+{
+    int cid = _srs_context->get_id();
+    int ret = do_cycle_all();
+    _srs_context->set_id(cid);
+    return ret;
+}
+
+int SrsSource::do_cycle_all()
 {
     int ret = ERROR_SUCCESS;
     
-    // TODO: FIXME: support remove dead source for a long time.
     std::map<std::string, SrsSource*>::iterator it;
-    for (it = pool.begin(); it != pool.end(); ++it) {
+    for (it = pool.begin(); it != pool.end();) {
         SrsSource* source = it->second;
         if ((ret = source->cycle()) != ERROR_SUCCESS) {
             return ret;
         }
+        
+        if (source->expired()) {
+            int cid = source->source_id();
+            if (cid == -1 && source->pre_source_id() > 0) {
+                cid = source->pre_source_id();
+            }
+            if (cid > 0) {
+                _srs_context->set_id(cid);
+            }
+            srs_trace("cleanup die source, total=%d", (int)pool.size());
+            
+            srs_freep(source);
+            pool.erase(it++);
+        } else {
+            ++it;
+        }
     }
     
     return ret;
@@ -916,7 +942,8 @@ SrsSource::SrsSource()
     cache_metadata = cache_sh_video = cache_sh_audio = NULL;
     
     _can_publish = true;
-    _source_id = -1;
+    _pre_source_id = _source_id = -1;
+    die_at = -1;
     
     play_edge = new SrsPlayEdge();
     publish_edge = new SrsPublishEdge();
@@ -1001,6 +1028,20 @@ int SrsSource::cycle()
     return ret;
 }
 
+bool SrsSource::expired()
+{
+    if (!consumers.empty() || die_at == -1) {
+        return false;
+    }
+    
+    int64_t now = srs_get_system_time_ms();
+    if (now > die_at + SRS_SOURCE_CLEANUP) {
+        return true;
+    }
+    
+    return false;
+}
+
 int SrsSource::initialize(SrsRequest* r, ISrsSourceHandler* h, ISrsHlsHandler* hh)
 {
     int ret = ERROR_SUCCESS;
@@ -1355,6 +1396,12 @@ int SrsSource::on_source_id_changed(int id)
         return ret;
     }
     
+    if (_pre_source_id == -1) {
+        _pre_source_id = id;
+    } else if (_pre_source_id != _source_id) {
+        _pre_source_id = _source_id;
+    }
+    
     _source_id = id;
     
     // notice all consumer
@@ -1372,6 +1419,11 @@ int SrsSource::source_id()
     return _source_id;
 }
 
+int SrsSource::pre_source_id()
+{
+    return _pre_source_id;
+}
+
 bool SrsSource::can_publish(bool is_edge)
 {
     if (is_edge) {
@@ -2107,6 +2159,11 @@ int SrsSource::on_publish()
 
 void SrsSource::on_unpublish()
 {
+    // ignore when already unpublished.
+    if (_can_publish) {
+        return;
+    }
+    
     // destroy all forwarders
     destroy_forwarders();
 
@@ -2142,12 +2199,18 @@ void SrsSource::on_unpublish()
     SrsStatistic* stat = SrsStatistic::instance();
     stat->on_stream_close(_req);
     handler->on_unpublish(this, _req);
+    
+    // no consumer, stream is die.
+    if (consumers.empty()) {
+        die_at = srs_get_system_time_ms();
+    }
 }
 
 int SrsSource::create_consumer(SrsConnection* conn, SrsConsumer*& consumer, bool ds, bool dm, bool dg)
 {
     int ret = ERROR_SUCCESS;
     
+    die_at = -1;
     consumer = new SrsConsumer(this, conn);
     consumers.push_back(consumer);
     
@@ -2224,6 +2287,7 @@ void SrsSource::on_consumer_destroy(SrsConsumer* consumer)
     
     if (consumers.empty()) {
         play_edge->on_all_client_stop();
+        die_at = srs_get_system_time_ms();
     }
 }
 
diff --git a/trunk/src/app/srs_app_source.hpp b/trunk/src/app/srs_app_source.hpp
index 6ee37d5ed1..616e739040 100755
--- a/trunk/src/app/srs_app_source.hpp
+++ b/trunk/src/app/srs_app_source.hpp
@@ -439,6 +439,9 @@ class SrsSource : public ISrsReloadHandler
      */
     static void dispose_all();
     static int cycle_all();
+private:
+    static int do_cycle_all();
+public:
     /**
     * when system exit, destroy the sources,
     * for gmc to analysis mem leaks.
@@ -451,6 +454,8 @@ class SrsSource : public ISrsReloadHandler
     // when source id changed, for example, the edge reconnect,
     // invoke the on_source_id_changed() to let all clients know.
     int _source_id;
+    // previous source id.
+    int _pre_source_id;
     // deep copy of client request.
     SrsRequest* _req;
     // to delivery stream to clients.
@@ -501,6 +506,9 @@ class SrsSource : public ISrsReloadHandler
     */
     // TODO: FIXME: to support reload atc.
     bool atc;
+    // last die time, when all consumers quit and no publisher,
+    // we will remove the source when source die.
+    int64_t die_at;
 private:
     SrsSharedPtrMessage* cache_metadata;
     // the cached video sequence header.
@@ -513,6 +521,8 @@ class SrsSource : public ISrsReloadHandler
 public:
     virtual void dispose();
     virtual int cycle();
+    // remove source when expired.
+    virtual bool expired();
 // initialize, get and setter.
 public:
     /**
@@ -543,6 +553,7 @@ class SrsSource : public ISrsReloadHandler
     virtual int on_source_id_changed(int id);
     // get current source id.
     virtual int source_id();
+    virtual int pre_source_id();
 // logic data methods
 public:
     virtual bool can_publish(bool is_edge);
diff --git a/trunk/src/app/srs_app_thread.cpp b/trunk/src/app/srs_app_thread.cpp
index 8a366470de..8134cdb888 100755
--- a/trunk/src/app/srs_app_thread.cpp
+++ b/trunk/src/app/srs_app_thread.cpp
@@ -25,6 +25,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_kernel_error.hpp>
 #include <srs_kernel_log.hpp>
+#include <srs_app_log.hpp>
 
 namespace internal {
     ISrsThreadHandler::ISrsThreadHandler()
@@ -243,6 +244,12 @@ namespace internal {
         
         obj->thread_cycle();
         
+        // for valgrind to detect.
+        SrsThreadContext* ctx = dynamic_cast<SrsThreadContext*>(_srs_context);
+        if (ctx) {
+            ctx->clear_cid();
+        }
+        
         st_thread_exit(NULL);
         
         return NULL;
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index c8e496b106..8ceeb04f8e 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    213
+#define VERSION_REVISION    214
 
 // generated by configure, only macros.
 #include <srs_auto_headers.hpp>