diff --git a/trunk/conf/full.conf b/trunk/conf/full.conf
index 5faf13b05..f35bdac86 100644
--- a/trunk/conf/full.conf
+++ b/trunk/conf/full.conf
@@ -893,20 +893,23 @@ vhost refer.anti_suck.com {
 pithy_print {
     # shared print interval for all publish clients, in milliseconds.
     # if not specified, set to 1100.
-    publish         2000;
+    publish         10000;
     # shared print interval for all play clients, in milliseconds.
     # if not specified, set to 1300.
-    play            3000;
+    play            10000;
     # shared print interval for all forwarders, in milliseconds.
     # if not specified, set to 2000.
-    forwarder       3000;
+    forwarder       10000;
     # shared print interval for all encoders, in milliseconds.
     # if not specified, set to 2000.
-    encoder        3000;
+    encoder         10000;
     # shared print interval for all ingesters, in milliseconds.
     # if not specified, set to 2000.
-    ingester       3000;
+    ingester        10000;
     # shared print interval for all hls, in milliseconds.
     # if not specified, set to 2000.
-    hls            3000;
+    hls             10000;
+    # shared print interval for all edge, in milliseconds.
+    # if not specified, set to 2000.
+    edge            10000;
 }
diff --git a/trunk/src/app/srs_app_config.cpp b/trunk/src/app/srs_app_config.cpp
index 236df8984..6929c8cd5 100644
--- a/trunk/src/app/srs_app_config.cpp
+++ b/trunk/src/app/srs_app_config.cpp
@@ -1396,6 +1396,21 @@ int SrsConfig::get_pithy_print_play()
     return ::atoi(pithy->arg0().c_str());
 }
 
+int SrsConfig::get_pithy_print_edge()
+{
+    SrsConfDirective* pithy = root->get("pithy_print");
+    if (!pithy) {
+        return SRS_STAGE_EDGE_INTERVAL_MS;
+    }
+    
+    pithy = pithy->get("edge");
+    if (!pithy) {
+        return SRS_STAGE_EDGE_INTERVAL_MS;
+    }
+    
+    return ::atoi(pithy->arg0().c_str());
+}
+
 SrsConfDirective* SrsConfig::get_vhost(string vhost)
 {
     srs_assert(root);
@@ -1821,6 +1836,17 @@ bool SrsConfig::get_vhost_is_edge(std::string vhost)
     return true;
 }
 
+SrsConfDirective* SrsConfig::get_vhost_edge_origin(string vhost)
+{
+    SrsConfDirective* conf = get_vhost(vhost);
+    
+    if (!conf) {
+        return NULL;
+    }
+    
+    return conf->get("origin");
+}
+
 SrsConfDirective* SrsConfig::get_transcode(string vhost, string scope)
 {
     SrsConfDirective* conf = get_vhost(vhost);
diff --git a/trunk/src/app/srs_app_config.hpp b/trunk/src/app/srs_app_config.hpp
index 70ec317f6..0c13cdb36 100644
--- a/trunk/src/app/srs_app_config.hpp
+++ b/trunk/src/app/srs_app_config.hpp
@@ -76,6 +76,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define SRS_STAGE_ENCODER_INTERVAL_MS 2000
 #define SRS_STAGE_INGESTER_INTERVAL_MS 2000
 #define SRS_STAGE_HLS_INTERVAL_MS 2000
+#define SRS_STAGE_EDGE_INTERVAL_MS 2000
 
 #define SRS_AUTO_INGEST_TYPE_FILE "file"
 #define SRS_AUTO_INGEST_TYPE_STREAM "stream"
@@ -163,6 +164,7 @@ public:
     virtual int                 get_pithy_print_ingester();
     virtual int                 get_pithy_print_hls();
     virtual int                 get_pithy_print_play();
+    virtual int                 get_pithy_print_edge();
 // vhost specified section
 public:
     virtual SrsConfDirective*   get_vhost(std::string vhost);
@@ -193,6 +195,7 @@ public:
 // vhost edge section
 public:
     virtual bool                get_vhost_is_edge(std::string vhost);
+    virtual SrsConfDirective*   get_vhost_edge_origin(std::string vhost);
 // vhost transcode section
 public:
     virtual SrsConfDirective*   get_transcode(std::string vhost, std::string scope);
diff --git a/trunk/src/app/srs_app_edge.cpp b/trunk/src/app/srs_app_edge.cpp
index 726449a7f..521bb2d11 100644
--- a/trunk/src/app/srs_app_edge.cpp
+++ b/trunk/src/app/srs_app_edge.cpp
@@ -23,28 +23,55 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_app_edge.hpp>
 
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
 #include <srs_kernel_error.hpp>
 #include <srs_protocol_rtmp.hpp>
 #include <srs_kernel_log.hpp>
+#include <srs_protocol_rtmp.hpp>
+#include <srs_protocol_io.hpp>
+#include <srs_app_config.hpp>
+#include <srs_protocol_utility.hpp>
+#include <srs_protocol_rtmp.hpp>
+#include <srs_app_socket.hpp>
+#include <srs_protocol_rtmp_stack.hpp>
+#include <srs_app_source.hpp>
+#include <srs_app_pithy_print.hpp>
+#include <srs_core_autofree.hpp>
 
 // when error, edge ingester sleep for a while and retry.
-#define SRS_EDGE_INGESTER_SLEEP_US (int64_t)(3*1000*1000LL)
+#define SRS_EDGE_INGESTER_SLEEP_US (int64_t)(1*1000*1000LL)
+
+// when edge timeout, retry next.
+#define SRS_EDGE_TIMEOUT_US (int64_t)(3*1000*1000LL)
 
 SrsEdgeIngester::SrsEdgeIngester()
 {
+    io = NULL;
+    client = NULL;
     _edge = NULL;
     _req = NULL;
+    origin_index = 0;
+    stream_id = 0;
+    stfd = NULL;
     pthread = new SrsThread(this, SRS_EDGE_INGESTER_SLEEP_US);
 }
 
 SrsEdgeIngester::~SrsEdgeIngester()
 {
+    stop();
+    
+    srs_freep(pthread);
 }
 
-int SrsEdgeIngester::initialize(SrsEdge* edge, SrsRequest* req)
+int SrsEdgeIngester::initialize(SrsSource* source, SrsEdge* edge, SrsRequest* req)
 {
     int ret = ERROR_SUCCESS;
     
+    _source = source;
     _edge = edge;
     _req = req;
     
@@ -53,14 +80,229 @@ int SrsEdgeIngester::initialize(SrsEdge* edge, SrsRequest* req)
 
 int SrsEdgeIngester::start()
 {
-    int ret = ERROR_SUCCESS;
-    return ret;
-    //return pthread->start();
+    return pthread->start();
+}
+
+void SrsEdgeIngester::stop()
+{
+    pthread->stop();
+    
+    close_underlayer_socket();
+    
+    srs_freep(client);
+    srs_freep(io);
 }
 
 int SrsEdgeIngester::cycle()
 {
     int ret = ERROR_SUCCESS;
+    
+    if ((ret = connect_server()) != ERROR_SUCCESS) {
+        return ret;
+    }
+    srs_assert(client);
+
+    client->set_recv_timeout(SRS_RECV_TIMEOUT_US);
+    client->set_send_timeout(SRS_SEND_TIMEOUT_US);
+
+    SrsRequest* req = _req;
+    
+    if ((ret = client->handshake()) != ERROR_SUCCESS) {
+        srs_error("handshake with server failed. ret=%d", ret);
+        return ret;
+    }
+    if ((ret = client->connect_app(req->app, req->tcUrl)) != ERROR_SUCCESS) {
+        srs_error("connect with server failed, tcUrl=%s. ret=%d", req->tcUrl.c_str(), ret);
+        return ret;
+    }
+    if ((ret = client->create_stream(stream_id)) != ERROR_SUCCESS) {
+        srs_error("connect with server failed, stream_id=%d. ret=%d", stream_id, ret);
+        return ret;
+    }
+    
+    if ((ret = client->play(req->stream, stream_id)) != ERROR_SUCCESS) {
+        srs_error("connect with server failed, stream=%s, stream_id=%d. ret=%d", 
+            req->stream.c_str(), stream_id, ret);
+        return ret;
+    }
+    
+    if ((ret = _source->on_publish()) != ERROR_SUCCESS) {
+        srs_error("edge ingester play stream then publish to edge failed. ret=%d", ret);
+        return ret;
+    }
+    
+    if ((ret = _edge->on_ingest_play()) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    if ((ret = ingest()) != ERROR_SUCCESS) {
+        return ret;
+    }
+    
+    return ret;
+}
+
+int SrsEdgeIngester::ingest()
+{
+    int ret = ERROR_SUCCESS;
+    
+    client->set_recv_timeout(SRS_EDGE_TIMEOUT_US);
+    
+    SrsPithyPrint pithy_print(SRS_STAGE_EDGE);
+
+    while (pthread->can_loop()) {
+        // switch to other st-threads.
+        st_usleep(0);
+        
+        pithy_print.elapse();
+        
+        // pithy print
+        if (pithy_print.can_print()) {
+            srs_trace("<- time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+                pithy_print.age(), client->get_send_bytes(), client->get_recv_bytes(), client->get_send_kbps(), client->get_recv_kbps());
+        }
+
+        // read from client.
+        SrsCommonMessage* msg = NULL;
+        if ((ret = client->recv_message(&msg)) != ERROR_SUCCESS) {
+            srs_error("recv origin server message failed. ret=%d", ret);
+            return ret;
+        }
+        srs_verbose("edge loop recv message. ret=%d", ret);
+        
+        srs_assert(msg);
+        SrsAutoFree(SrsCommonMessage, msg, false);
+        
+        if ((ret = process_publish_message(msg)) != ERROR_SUCCESS) {
+            return ret;
+        }
+    }
+    
+    return ret;
+}
+
+int SrsEdgeIngester::process_publish_message(SrsCommonMessage* msg)
+{
+    int ret = ERROR_SUCCESS;
+    
+    SrsSource* source = _source;
+        
+    // process audio packet
+    if (msg->header.is_audio()) {
+        if ((ret = source->on_audio(msg)) != ERROR_SUCCESS) {
+            srs_error("source process audio message failed. ret=%d", ret);
+            return ret;
+        }
+    }
+    
+    // process video packet
+    if (msg->header.is_video()) {
+        if ((ret = source->on_video(msg)) != ERROR_SUCCESS) {
+            srs_error("source process video message failed. ret=%d", ret);
+            return ret;
+        }
+    }
+
+    // process onMetaData
+    if (msg->header.is_amf0_data() || msg->header.is_amf3_data()) {
+        if ((ret = msg->decode_packet(client->get_protocol())) != ERROR_SUCCESS) {
+            srs_error("decode onMetaData message failed. ret=%d", ret);
+            return ret;
+        }
+    
+        SrsPacket* pkt = msg->get_packet();
+        if (dynamic_cast<SrsOnMetaDataPacket*>(pkt)) {
+            SrsOnMetaDataPacket* metadata = dynamic_cast<SrsOnMetaDataPacket*>(pkt);
+            if ((ret = source->on_meta_data(msg, metadata)) != ERROR_SUCCESS) {
+                srs_error("source process onMetaData message failed. ret=%d", ret);
+                return ret;
+            }
+            srs_trace("process onMetaData message success.");
+            return ret;
+        }
+        
+        srs_trace("ignore AMF0/AMF3 data message.");
+        return ret;
+    }
+    
+    return ret;
+}
+
+void SrsEdgeIngester::close_underlayer_socket()
+{
+    srs_close_stfd(stfd);
+}
+
+int SrsEdgeIngester::connect_server()
+{
+    int ret = ERROR_SUCCESS;
+    
+    // reopen
+    close_underlayer_socket();
+    
+    // TODO: FIXME: support reload
+    SrsConfDirective* conf = _srs_config->get_vhost_edge_origin(_req->vhost);
+    srs_assert(conf);
+    
+    // select the origin.
+    std::string server = conf->args.at(origin_index % conf->args.size());
+    origin_index = (origin_index + 1) % conf->args.size();
+    
+    std::string s_port = RTMP_DEFAULT_PORT;
+    int port = ::atoi(RTMP_DEFAULT_PORT);
+    size_t pos = server.find(":");
+    if (pos != std::string::npos) {
+        s_port = server.substr(pos + 1);
+        server = server.substr(0, pos);
+        port = ::atoi(s_port.c_str());
+    }
+    
+    // open socket.
+    srs_trace("connect edge stream=%s, tcUrl=%s to server=%s, port=%d",
+        _req->stream.c_str(), _req->tcUrl.c_str(), server.c_str(), port);
+
+    // TODO: FIXME: extract utility method
+    int sock = socket(AF_INET, SOCK_STREAM, 0);
+    if(sock == -1){
+        ret = ERROR_SOCKET_CREATE;
+        srs_error("create socket error. ret=%d", ret);
+        return ret;
+    }
+    
+    srs_assert(!stfd);
+    stfd = st_netfd_open_socket(sock);
+    if(stfd == NULL){
+        ret = ERROR_ST_OPEN_SOCKET;
+        srs_error("st_netfd_open_socket failed. ret=%d", ret);
+        return ret;
+    }
+    
+    srs_freep(client);
+    srs_freep(io);
+    
+    io = new SrsSocket(stfd);
+    client = new SrsRtmpClient(io);
+    
+    // connect to server.
+    std::string ip = srs_dns_resolve(server);
+    if (ip.empty()) {
+        ret = ERROR_SYSTEM_IP_INVALID;
+        srs_error("dns resolve server error, ip empty. ret=%d", ret);
+        return ret;
+    }
+    
+    sockaddr_in addr;
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(port);
+    addr.sin_addr.s_addr = inet_addr(ip.c_str());
+    
+    if (st_connect(stfd, (const struct sockaddr*)&addr, sizeof(sockaddr_in), ST_UTIME_NO_TIMEOUT) == -1){
+        ret = ERROR_ST_CONNECT;
+        srs_error("connect to server error. ip=%s, port=%d, ret=%d", ip.c_str(), port, ret);
+        return ret;
+    }
+    srs_trace("connect to server success. server=%s, ip=%s, port=%d", server.c_str(), ip.c_str(), port);
+    
     return ret;
 }
 
@@ -75,11 +317,11 @@ SrsEdge::~SrsEdge()
     srs_freep(ingester);
 }
 
-int SrsEdge::initialize(SrsRequest* req)
+int SrsEdge::initialize(SrsSource* source, SrsRequest* req)
 {
     int ret = ERROR_SUCCESS;
     
-    if ((ret = ingester->initialize(this, req)) != ERROR_SUCCESS) {
+    if ((ret = ingester->initialize(source, this, req)) != ERROR_SUCCESS) {
         return ret;
     }
     
@@ -106,3 +348,25 @@ int SrsEdge::on_client_play()
     return ret;
 }
 
+void SrsEdge::on_all_client_stop()
+{
+    if (state == SrsEdgeStateIngestConnected) {
+        ingester->stop();
+    }
+    
+    SrsEdgeState pstate = state;
+    state = SrsEdgeStateInit;
+    srs_trace("edge change from %d to state %d (init).", pstate, state);
+}
+
+int SrsEdge::on_ingest_play()
+{
+    int ret = ERROR_SUCCESS;
+    
+    SrsEdgeState pstate = state;
+    state = SrsEdgeStateIngestConnected;
+    
+    srs_trace("edge change from %d to state %d (ingest connected).", pstate, state);
+    
+    return ret;
+}
diff --git a/trunk/src/app/srs_app_edge.hpp b/trunk/src/app/srs_app_edge.hpp
index 130c0ef56..92bc5b55f 100644
--- a/trunk/src/app/srs_app_edge.hpp
+++ b/trunk/src/app/srs_app_edge.hpp
@@ -30,10 +30,15 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <srs_core.hpp>
 
+#include <srs_app_st.hpp>
 #include <srs_app_thread.hpp>
 
 class SrsEdge;
+class SrsSource;
 class SrsRequest;
+class SrsRtmpClient;
+class SrsCommonMessage;
+class ISrsProtocolReaderWriter;
 
 /**
 * the state of edge
@@ -43,7 +48,10 @@ enum SrsEdgeState
     SrsEdgeStateInit = 0,
     SrsEdgeStatePlay = 100,
     SrsEdgeStatePublish,
-    SrsEdgeStateConnected,
+    // play stream from origin, ingest stream
+    SrsEdgeStateIngestConnected,
+    // publish stream to edge, forward to origin
+    SrsEdgeStateForwardConnected,
     SrsEdgeStateAborting,
     SrsEdgeStateReloading,
 };
@@ -54,18 +62,31 @@ enum SrsEdgeState
 class SrsEdgeIngester : public ISrsThreadHandler
 {
 private:
+    int stream_id;
+private:
+    SrsSource* _source;
     SrsEdge* _edge;
     SrsRequest* _req;
     SrsThread* pthread;
+    st_netfd_t stfd;
+    ISrsProtocolReaderWriter* io;
+    SrsRtmpClient* client;
+    int origin_index;
 public:
     SrsEdgeIngester();
     virtual ~SrsEdgeIngester();
 public:
-    virtual int initialize(SrsEdge* edge, SrsRequest* req);
+    virtual int initialize(SrsSource* source, SrsEdge* edge, SrsRequest* req);
     virtual int start();
+    virtual void stop();
 // interface ISrsThreadHandler
 public:
     virtual int cycle();
+private:
+    virtual int ingest();
+    virtual void close_underlayer_socket();
+    virtual int connect_server();
+    virtual int process_publish_message(SrsCommonMessage* msg);
 };
 
 /**
@@ -80,11 +101,20 @@ public:
     SrsEdge();
     virtual ~SrsEdge();
 public:
-    virtual int initialize(SrsRequest* req);
+    virtual int initialize(SrsSource* source, SrsRequest* req);
     /**
     * when client play stream on edge.
     */
     virtual int on_client_play();
+    /**
+    * when all client stopped play, disconnect to origin.
+    */
+    virtual void on_all_client_stop();
+public:
+    /**
+    * when ingester start to play stream.
+    */
+    virtual int on_ingest_play();
 };
 
 #endif
diff --git a/trunk/src/app/srs_app_encoder.cpp b/trunk/src/app/srs_app_encoder.cpp
index 08f3abaa1..3d4c19d9b 100644
--- a/trunk/src/app/srs_app_encoder.cpp
+++ b/trunk/src/app/srs_app_encoder.cpp
@@ -113,7 +113,7 @@ int SrsEncoder::cycle()
 
     // pithy print
     encoder();
-    pithy_print->elapse(SRS_RTMP_ENCODER_SLEEP_US / 1000);
+    pithy_print->elapse();
     
     return ret;
 }
@@ -326,7 +326,7 @@ void SrsEncoder::encoder()
     if (pithy_print->can_print()) {
         // TODO: FIXME: show more info.
         srs_trace("-> time=%"PRId64", encoders=%d, input=%s", 
-            pithy_print->get_age(), (int)ffmpegs.size(), input_stream_name.c_str());
+            pithy_print->age(), (int)ffmpegs.size(), input_stream_name.c_str());
     }
 }
 
diff --git a/trunk/src/app/srs_app_forward.cpp b/trunk/src/app/srs_app_forward.cpp
index 52d7b8cc1..8e20bc6fe 100644
--- a/trunk/src/app/srs_app_forward.cpp
+++ b/trunk/src/app/srs_app_forward.cpp
@@ -83,6 +83,7 @@ int SrsForwarder::on_publish(SrsRequest* req, std::string forward_server)
     std::string s_port = RTMP_DEFAULT_PORT;
     port = ::atoi(RTMP_DEFAULT_PORT);
     
+    // TODO: FIXME: parse complex params
     size_t pos = forward_server.find(":");
     if (pos != std::string::npos) {
         s_port = forward_server.substr(pos + 1);
@@ -310,6 +311,8 @@ int SrsForwarder::forward()
         // switch to other st-threads.
         st_usleep(0);
 
+        pithy_print.elapse();
+
         // read from client.
         if (true) {
             SrsCommonMessage* msg = NULL;
@@ -330,19 +333,18 @@ int SrsForwarder::forward()
             return ret;
         }
         
+        // pithy print
+        if (pithy_print.can_print()) {
+            srs_trace("-> time=%"PRId64", msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
+                pithy_print.age(), count, client->get_send_bytes(), client->get_recv_bytes(), client->get_send_kbps(), client->get_recv_kbps());
+        }
+        
         // ignore when no messages.
         if (count <= 0) {
             srs_verbose("no packets to forward.");
             continue;
         }
         SrsAutoFree(SrsSharedPtrMessage*, msgs, true);
-
-        // pithy print
-        pithy_print.elapse(SRS_PULSE_TIMEOUT_US / 1000);
-        if (pithy_print.can_print()) {
-            srs_trace("-> time=%"PRId64", msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-                pithy_print.get_age(), count, client->get_send_bytes(), client->get_recv_bytes(), client->get_send_kbps(), client->get_recv_kbps());
-        }
     
         // all msgs to forward.
         for (int i = 0; i < count; i++) {
diff --git a/trunk/src/app/srs_app_hls.cpp b/trunk/src/app/srs_app_hls.cpp
index 822b99ba7..2980462be 100644
--- a/trunk/src/app/srs_app_hls.cpp
+++ b/trunk/src/app/srs_app_hls.cpp
@@ -1470,10 +1470,10 @@ void SrsHls::hls_mux()
 {
     // reportable
     if (pithy_print->can_print()) {
-        srs_trace("-> time=%"PRId64"", pithy_print->get_age());
+        srs_trace("-> time=%"PRId64"", pithy_print->age());
     }
     
-    pithy_print->elapse(sample->cts);
+    pithy_print->elapse();
 }
 
 #endif
diff --git a/trunk/src/app/srs_app_ingest.cpp b/trunk/src/app/srs_app_ingest.cpp
index a336a6222..3d43ddff8 100644
--- a/trunk/src/app/srs_app_ingest.cpp
+++ b/trunk/src/app/srs_app_ingest.cpp
@@ -188,7 +188,7 @@ int SrsIngester::cycle()
 
     // pithy print
     ingester();
-    pithy_print->elapse(SRS_AUTO_INGESTER_SLEEP_US / 1000);
+    pithy_print->elapse();
     
     return ret;
 }
@@ -350,7 +350,7 @@ void SrsIngester::ingester()
     }
     
     // TODO: FIXME: show more info.
-    srs_trace("-> time=%"PRId64", ingesters=%d", pithy_print->get_age(), (int)ingesters.size());
+    srs_trace("-> time=%"PRId64", ingesters=%d", pithy_print->age(), (int)ingesters.size());
 }
 
 int SrsIngester::on_reload_vhost_added(string vhost)
diff --git a/trunk/src/app/srs_app_pithy_print.cpp b/trunk/src/app/srs_app_pithy_print.cpp
index cca72c687..10dcaff1d 100644
--- a/trunk/src/app/srs_app_pithy_print.cpp
+++ b/trunk/src/app/srs_app_pithy_print.cpp
@@ -30,6 +30,7 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #include <srs_app_config.hpp>
 #include <srs_app_reload.hpp>
 #include <srs_kernel_error.hpp>
+#include <srs_kernel_utility.hpp>
 
 #define SRS_STAGE_DEFAULT_INTERVAL_MS 1200
 
@@ -75,6 +76,10 @@ struct SrsStageInfo : public ISrsReloadHandler
                 pithy_print_time_ms = _srs_config->get_pithy_print_ingester();
                 break;
             }
+            case SRS_STAGE_EDGE: {
+                pithy_print_time_ms = _srs_config->get_pithy_print_edge();
+                break;
+            }
             case SRS_STAGE_HLS: {
                 pithy_print_time_ms = _srs_config->get_pithy_print_hls();
                 break;
@@ -98,7 +103,8 @@ SrsPithyPrint::SrsPithyPrint(int _stage_id)
 {
     stage_id = _stage_id;
     client_id = enter_stage();
-    printed_age = age = 0;
+    previous_tick = srs_get_system_time_ms();
+    printed_age = _age = 0;
 }
 
 SrsPithyPrint::~SrsPithyPrint()
@@ -138,9 +144,12 @@ void SrsPithyPrint::leave_stage()
         stage->stage_id, client_id, stage->nb_clients, stage->pithy_print_time_ms);
 }
 
-void SrsPithyPrint::elapse(int64_t time_ms)
+void SrsPithyPrint::elapse()
 {
-    age += time_ms;
+    int64_t diff = srs_get_system_time_ms() - previous_tick;
+    
+    _age += srs_max(0, diff);
+    previous_tick = srs_get_system_time_ms();
 }
 
 bool SrsPithyPrint::can_print()
@@ -148,24 +157,19 @@ bool SrsPithyPrint::can_print()
     SrsStageInfo* stage = _srs_stages[stage_id];
     srs_assert(stage != NULL);
     
-    int64_t alive_age = age - printed_age;
+    int64_t alive_age = _age - printed_age;
     int64_t can_print_age = stage->nb_clients * stage->pithy_print_time_ms;
     
     bool can_print = alive_age >= can_print_age;
     if (can_print) {
-        printed_age = age;
+        printed_age = _age;
     }
     
     return can_print;
 }
 
-int64_t SrsPithyPrint::get_age()
+int64_t SrsPithyPrint::age()
 {
-    return age;
-}
-
-void SrsPithyPrint::set_age(int64_t _age)
-{
-    age = _age;
+    return _age;
 }
 
diff --git a/trunk/src/app/srs_app_pithy_print.hpp b/trunk/src/app/srs_app_pithy_print.hpp
index df1052c43..4661cc315 100644
--- a/trunk/src/app/srs_app_pithy_print.hpp
+++ b/trunk/src/app/srs_app_pithy_print.hpp
@@ -42,6 +42,8 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #define SRS_STAGE_HLS 5
 // the pithy stage for all ingesters.
 #define SRS_STAGE_INGESTER 6
+// the pithy stage for all edge.
+#define SRS_STAGE_EDGE 7
 
 /**
 * the stage is used for a collection of object to do print,
@@ -55,8 +57,9 @@ private:
     int client_id;
     int stage_id;
     // in ms.
-    int64_t age;
+    int64_t _age;
     int64_t printed_age;
+    int64_t previous_tick;
 public:
     /**
     * @param _stage_id defined in SRS_STAGE_xxx, eg. SRS_STAGE_PLAY_USER.
@@ -74,9 +77,9 @@ private:
     virtual void leave_stage();
 public:
     /**
-    * specified client elapse some time.
+    * auto calc the elapse time
     */
-    virtual void elapse(int64_t time_ms);
+    virtual void elapse();
     /**
     * whether current client can print.
     */
@@ -84,8 +87,7 @@ public:
     /**
     * get the elapsed time in ms.
     */
-    virtual int64_t get_age();
-    virtual void set_age(int64_t _age);
+    virtual int64_t age();
 };
 
 #endif
\ No newline at end of file
diff --git a/trunk/src/app/srs_app_rtmp_conn.cpp b/trunk/src/app/srs_app_rtmp_conn.cpp
index 79349ce59..6f6b80c50 100644
--- a/trunk/src/app/srs_app_rtmp_conn.cpp
+++ b/trunk/src/app/srs_app_rtmp_conn.cpp
@@ -297,8 +297,8 @@ int SrsRtmpConn::stream_service_cycle()
             srs_verbose("start to play stream %s.", req->stream.c_str());
             
             if (vhost_is_edge) {
-                if ((ret = source->on_edge_play_stream()) != ERROR_SUCCESS) {
-                    srs_error("notice edge play stream failed. ret=%d", ret);
+                if ((ret = source->on_edge_start_play()) != ERROR_SUCCESS) {
+                    srs_error("notice edge start play stream failed. ret=%d", ret);
                     return ret;
                 }
             }
@@ -311,9 +311,11 @@ int SrsRtmpConn::stream_service_cycle()
                 srs_error("http hook on_play failed. ret=%d", ret);
                 return ret;
             }
+            
             srs_info("start to play stream %s success", req->stream.c_str());
             ret = playing(source);
             on_stop();
+            
             return ret;
         }
         case SrsRtmpConnFMLEPublish: {
@@ -423,10 +425,10 @@ int SrsRtmpConn::playing(SrsSource* source)
 
     int64_t starttime = -1;
     while (true) {
-        pithy_print.elapse(SRS_PULSE_TIMEOUT_US / 1000);
-        
         // switch to other st-threads.
         st_usleep(0);
+        
+        pithy_print.elapse();
 
         // read from client.
         int ctl_msg_ret = ERROR_SUCCESS;
@@ -460,7 +462,7 @@ int SrsRtmpConn::playing(SrsSource* source)
         // reportable
         if (pithy_print.can_print()) {
             srs_trace("-> time=%"PRId64", duration=%"PRId64", cmr=%d, msgs=%d, obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-                pithy_print.get_age(), duration, ctl_msg_ret, count, rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
+                pithy_print.age(), duration, ctl_msg_ret, count, rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
         }
         
         if (count <= 0) {
@@ -531,14 +533,15 @@ int SrsRtmpConn::fmle_publish(SrsSource* source)
             return ret;
         }
 
+        srs_assert(msg);
         SrsAutoFree(SrsCommonMessage, msg, false);
         
-        pithy_print.set_age(msg->header.timestamp);
+        pithy_print.elapse();
 
         // reportable
         if (pithy_print.can_print()) {
             srs_trace("<- time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-                pithy_print.get_age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
+                pithy_print.age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
         }
     
         // process UnPublish event.
@@ -604,12 +607,12 @@ int SrsRtmpConn::flash_publish(SrsSource* source)
 
         SrsAutoFree(SrsCommonMessage, msg, false);
         
-        pithy_print.set_age(msg->header.timestamp);
+        pithy_print.elapse();
 
         // reportable
         if (pithy_print.can_print()) {
             srs_trace("<- time=%"PRId64", obytes=%"PRId64", ibytes=%"PRId64", okbps=%d, ikbps=%d", 
-                pithy_print.get_age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
+                pithy_print.age(), rtmp->get_send_bytes(), rtmp->get_recv_bytes(), rtmp->get_send_kbps(), rtmp->get_recv_kbps());
         }
     
         // process UnPublish event.
diff --git a/trunk/src/app/srs_app_source.cpp b/trunk/src/app/srs_app_source.cpp
index 668779fee..50c2941a5 100644
--- a/trunk/src/app/srs_app_source.cpp
+++ b/trunk/src/app/srs_app_source.cpp
@@ -515,7 +515,7 @@ int SrsSource::initialize()
     }
 #endif
 
-    if ((ret = edge->initialize(_req)) != ERROR_SUCCESS) {
+    if ((ret = edge->initialize(this, _req)) != ERROR_SUCCESS) {
         return ret;
     }
     
@@ -1168,6 +1168,10 @@ void SrsSource::on_consumer_destroy(SrsConsumer* consumer)
         consumers.erase(it);
     }
     srs_info("handle consumer destroy success.");
+    
+    if (consumers.empty()) {
+        edge->on_all_client_stop();
+    }
 }
 
 void SrsSource::set_cache(bool enabled)
@@ -1180,7 +1184,7 @@ bool SrsSource::is_atc()
     return atc;
 }
 
-int SrsSource::on_edge_play_stream()
+int SrsSource::on_edge_start_play()
 {
     return edge->on_client_play();
 }
diff --git a/trunk/src/app/srs_app_source.hpp b/trunk/src/app/srs_app_source.hpp
index 56769ae40..fb83df04f 100644
--- a/trunk/src/app/srs_app_source.hpp
+++ b/trunk/src/app/srs_app_source.hpp
@@ -313,7 +313,7 @@ public:
     // for consumer, atc feature.
     virtual bool is_atc();
     // for edge, when play edge stream, check the state
-    virtual int on_edge_play_stream();
+    virtual int on_edge_start_play();
 private:
     virtual int create_forwarders();
     virtual void destroy_forwarders();
diff --git a/trunk/src/core/srs_core.hpp b/trunk/src/core/srs_core.hpp
index 206b03cde..2824e58f3 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 "0"
 #define VERSION_MINOR "9"
-#define VERSION_REVISION "76"
+#define VERSION_REVISION "77"
 #define RTMP_SIG_SRS_VERSION VERSION_MAJOR"."VERSION_MINOR"."VERSION_REVISION
 // server info.
 #define RTMP_SIG_SRS_KEY "srs"
diff --git a/trunk/src/rtmp/srs_protocol_rtmp.cpp b/trunk/src/rtmp/srs_protocol_rtmp.cpp
index 1b743c820..982cd4df6 100644
--- a/trunk/src/rtmp/srs_protocol_rtmp.cpp
+++ b/trunk/src/rtmp/srs_protocol_rtmp.cpp
@@ -337,6 +337,11 @@ SrsRtmpClient::~SrsRtmpClient()
     srs_freep(hs_bytes);
 }
 
+SrsProtocol* SrsRtmpClient::get_protocol()
+{
+    return protocol;
+}
+
 void SrsRtmpClient::set_recv_timeout(int64_t timeout_us)
 {
     protocol->set_recv_timeout(timeout_us);
diff --git a/trunk/src/rtmp/srs_protocol_rtmp.hpp b/trunk/src/rtmp/srs_protocol_rtmp.hpp
index 70b5425a2..d0079fdda 100644
--- a/trunk/src/rtmp/srs_protocol_rtmp.hpp
+++ b/trunk/src/rtmp/srs_protocol_rtmp.hpp
@@ -155,6 +155,7 @@ public:
     SrsRtmpClient(ISrsProtocolReaderWriter* skt);
     virtual ~SrsRtmpClient();
 public:
+    virtual SrsProtocol* get_protocol();
     virtual void set_recv_timeout(int64_t timeout_us);
     virtual void set_send_timeout(int64_t timeout_us);
     virtual int64_t get_recv_bytes();