17 files changed, 280 insertions, 119 deletions

diff --git a/scripts/automation/trex_control_plane/client/trex_async_client.py b/scripts/automation/trex_control_plane/client/trex_async_client.py
index 66e65a32..2bb0e9cd 100644
--- a/scripts/automation/trex_control_plane/client/trex_async_client.py
+++ b/scripts/automation/trex_control_plane/client/trex_async_client.py
@@ -16,6 +16,7 @@ import time
 import datetime
 import zmq
 import re
+import random
 
 from common.trex_stats import *
 from common.trex_streams import *
@@ -155,6 +156,7 @@ class CTRexAsyncClient():
         self.stats = CTRexAsyncStatsManager()
 
         self.last_data_recv_ts = 0
+        self.async_barriers    = []
 
         self.connected = False
  
@@ -188,17 +190,16 @@ class CTRexAsyncClient():
 
         self.connected = True
 
-
-        # wait for data streaming from the server
-        timeout = time.time() + 5
-        while not self.is_alive():
-            time.sleep(0.01)
-            if time.time() > timeout:
-                self.disconnect()
-                return RC_ERR("*** [subscriber] - no data flow from server at : " + self.tr)
+        # send a barrier and wait for ack
+        rc = self.block_on_stats()
+        if not rc:
+            self.disconnect()
+            return rc
 
         return RC_OK()
 
+    
+
 
     # disconnect
     def disconnect (self):
@@ -284,10 +285,46 @@ class CTRexAsyncClient():
         # stats
         if name == "trex-global":
             self.stateless_client.handle_async_stats_update(data)
+
         # events
         elif name == "trex-event":
             self.stateless_client.handle_async_event(type, data)
+
+        # barriers
+        elif name == "trex-barrier":
+            self.handle_async_barrier(type, data)
         else:
             pass
 
 
+    # async barrier handling routine
+    def handle_async_barrier (self, type, data):
+
+        for b in self.async_barriers:
+            if b['key'] == type:
+                b['ack'] = True
+
+
+    # force update a new snapshot from the server
+    def block_on_stats(self, timeout = 5):
+
+        # set a random key
+        key = random.getrandbits(32)
+        barrier = {'key': key, 'ack' : False}
+
+        # add to the queue
+        self.async_barriers.append(barrier)
+        
+        rc = self.stateless_client.transmit("publish_now", params = {'key' : key})
+        if not rc:
+            return rc
+
+        expr = time.time() + timeout
+        while not barrier['ack']:
+            time.sleep(0.001)
+            if time.time() > expr:
+                return RC_ERR("*** [subscriber] - timeout - no data flow from server at : " + self.tr)
+
+        return RC_OK()
+
+
diff --git a/scripts/automation/trex_control_plane/client/trex_stateless_client.py b/scripts/automation/trex_control_plane/client/trex_stateless_client.py
index b7700c7c..105c4d01 100755
--- a/scripts/automation/trex_control_plane/client/trex_stateless_client.py
+++ b/scripts/automation/trex_control_plane/client/trex_stateless_client.py
@@ -55,12 +55,16 @@ class LoggerApi(object):
         return (self.level >= level)
 
 
+    # simple log message with verbose
     def log (self, msg, level = VERBOSE_REGULAR, newline = True):
         if not self.check_verbose(level):
             return
 
         self.write(msg, newline)
 
+    # annotates an action with a RC - writes to log the result
+    def annotate (self, rc, desc = None, show_status = True):
+        rc.annotate(self.log, desc, show_status)
 
 # default logger - to stdout
 class DefaultLogger(LoggerApi):
@@ -82,7 +86,7 @@ class CTRexStatelessClient(object):
                  server = "localhost",
                  sync_port = 4501,
                  async_port = 4500,
-                 quiet = False,
+                 verbose_level = LoggerApi.VERBOSE_REGULAR,
                  virtual = False,
                  logger = None):
 
@@ -90,13 +94,14 @@ class CTRexStatelessClient(object):
 
         self.user = username
 
+        # logger
         if not logger:
             self.logger = DefaultLogger()
         else:
             self.logger = logger
 
-        if quiet:
-            self.logger.set_verbose(self.logger.VERBOSE_QUIET)
+        # initial verbose
+        self.logger.set_verbose(verbose_level)
 
         self.comm_link = CTRexStatelessClient.CCommLink(server, sync_port, virtual, self.logger)
 
diff --git a/scripts/automation/trex_control_plane/client_utils/jsonrpc_client.py b/scripts/automation/trex_control_plane/client_utils/jsonrpc_client.py
index a5e01340..e08f5d69 100755
--- a/scripts/automation/trex_control_plane/client_utils/jsonrpc_client.py
+++ b/scripts/automation/trex_control_plane/client_utils/jsonrpc_client.py
@@ -124,7 +124,7 @@ class JsonRpcClient(object):
                 break
             except zmq.Again:
                 tries += 1
-                if tries > 10:
+                if tries > 5:
                     self.disconnect()
                     return RC_ERR("*** [RPC] - Failed to send message to server")
 
@@ -136,9 +136,9 @@ class JsonRpcClient(object):
                 break
             except zmq.Again:
                 tries += 1
-                if tries > 10:
+                if tries > 5:
                     self.disconnect()
-                    return RC_ERR("*** [RPC] - Failed to get server response")
+                    return RC_ERR("*** [RPC] - Failed to get server response at {0}".format(self.transport))
 
 
         self.verbose_msg("Server Response:\n\n" + self.pretty_json(response) + "\n")
@@ -173,6 +173,7 @@ class JsonRpcClient(object):
             else:
                 return RC_ERR(response_json["error"]["message"])
 
+        
         # if no error there should be a result
         if ("result" not in response_json):
             return RC_ERR("Malformed Response ({0})".format(str(response_json)))
diff --git a/scripts/automation/trex_control_plane/common/trex_types.py b/scripts/automation/trex_control_plane/common/trex_types.py
index 21deffd2..5c29f59b 100644
--- a/scripts/automation/trex_control_plane/common/trex_types.py
+++ b/scripts/automation/trex_control_plane/common/trex_types.py
@@ -17,7 +17,7 @@ class RC():
     def __init__ (self, rc = None, data = None):
         self.rc_list = []
 
-        if (rc != None) and (data != None):
+        if (rc != None):
             tuple_rc = namedtuple('RC', ['rc', 'data'])
             self.rc_list.append(tuple_rc(rc, data))
 
@@ -35,16 +35,26 @@ class RC():
 
     def data (self):
         d = [x.data if x.rc else "" for x in self.rc_list]
-        return (d if len(d) > 1 else d[0])
+        return (d if len(d) != 1 else d[0])
 
     def err (self):
         e = [x.data if not x.rc else "" for x in self.rc_list]
-        return (e if len(e) > 1 else e[0])
+        return (e if len(e) != 1 else e[0])
 
     def __str__ (self):
         return str(self.data()) if self else str(self.err())
 
-    def annotate (self, log_func, desc = None, show_status = True):
+    def prn_func (self, msg, newline = True):
+        if newline:
+            print msg
+        else:
+            print msg,
+
+    def annotate (self, log_func = None, desc = None, show_status = True):
+
+        if not log_func:
+            log_func = self.prn_func
+
         if desc:
             log_func(format_text('\n{:<60}'.format(desc), 'bold'), newline = False)
         else:
diff --git a/scripts/automation/trex_control_plane/console/trex_console.py b/scripts/automation/trex_control_plane/console/trex_console.py
index 2ae92fb6..f086c208 100755
--- a/scripts/automation/trex_control_plane/console/trex_console.py
+++ b/scripts/automation/trex_control_plane/console/trex_console.py
@@ -29,7 +29,7 @@ import sys
 import tty, termios
 import trex_root_path
 from common.trex_streams import *
-from client.trex_stateless_client import CTRexStatelessClient
+from client.trex_stateless_client import CTRexStatelessClient, LoggerApi
 from common.text_opts import *
 from client_utils.general_utils import user_input, get_current_user
 from client_utils import parsing_opts
@@ -266,36 +266,6 @@ class TRexConsole(TRexGeneralCmd):
 
         return targets
 
-    # annotation method
-    @staticmethod
-    def annotate (desc, rc = None, err_log = None, ext_err_msg = None):
-        print format_text('\n{:<40}'.format(desc), 'bold'),
-        if rc == None:
-            print "\n"
-            return
-
-        if rc == False:
-            # do we have a complex log object ?
-            if isinstance(err_log, list):
-                print ""
-                for func in err_log:
-                    if func:
-                        print func
-                print ""
-
-            elif isinstance(err_log, str):
-                print "\n" + err_log + "\n"
-
-            print format_text("[FAILED]\n", 'red', 'bold')
-            if ext_err_msg:
-                print format_text(ext_err_msg + "\n", 'blue', 'bold')
-
-            return False
-
-        else:
-            print format_text("[SUCCESS]\n", 'green', 'bold')
-            return True
-
 
     ####################### shell commands #######################
     @verify_connected
@@ -667,10 +637,19 @@ def main():
     options = parser.parse_args()
 
     # Stateless client connection
-    stateless_client = CTRexStatelessClient(options.user, options.server, options.port, options.pub, options.quiet)
+    if options.quiet:
+        verbose_level = LoggerApi.VERBOSE_QUIET
+    elif options.verbose:
+        verbose_level = LoggerApi.VERBOSE_HIGH
+    else:
+        verbose_level = LoggerApi.VERBOSE_REGULAR
 
-    if not options.quiet:
-        print "\nlogged as {0}".format(format_text(options.user, 'bold'))
+    # Stateless client connection
+    stateless_client = CTRexStatelessClient(options.user,
+                                            options.server,
+                                            options.port,
+                                            options.pub,
+                                            verbose_level)
 
     # TUI or no acquire will give us READ ONLY mode
     if options.tui or not options.acquire:
@@ -679,7 +658,7 @@ def main():
         rc = stateless_client.connect("RW")
 
     # unable to connect - bye
-    if rc.bad():
+    if not rc:
         rc.annotate()
         return
 
diff --git a/scripts/stl_test_api/__init__.py b/scripts/stl_test_api/__init__.py
index 6df72136..7381d88e 100644
--- a/scripts/stl_test_api/__init__.py
+++ b/scripts/stl_test_api/__init__.py
@@ -1,3 +1,9 @@
+#
+# TRex stateless API 
+# provides a layer for communicating with TRex
+# using Python API
+#
+
 import sys
 import os
 import time
@@ -43,24 +49,29 @@ class BasicTestAPI(object):
     # main object
     def __init__ (self, server = "localhost", sync_port = 4501, async_port = 4500):
         self.logger = BasicTestAPI.Logger()
-        self.client = CTRexStatelessClient(logger = self.logger, sync_port = sync_port, async_port = async_port)
+        self.client = CTRexStatelessClient(logger = self.logger,
+                                           sync_port = sync_port,
+                                           async_port = async_port,
+                                           verbose_level = LoggerApi.VERBOSE_REGULAR)
+
 
+        self.__invalid_stats = True
 
+    # connect to the stateless client
     def connect (self):
         rc = self.client.connect(mode = "RWF")
         self.__verify_rc(rc)
 
 
+    # disconnect from the stateless client
     def disconnect (self):
         self.client.disconnect()
 
 
-    def __verify_rc (self, rc):
-        if rc.bad():
-            raise self.Failure(rc)
-
     def inject_profile (self, filename, rate = "1", duration = None):
-        cmd = "-f {0} -m {1}".format(filename, rate)
+        self.__invalid_stats = True
+
+        cmd = "--total -f {0} -m {1}".format(filename, rate)
         if duration:
             cmd += " -d {0}".format(duration)
 
@@ -74,9 +85,24 @@ class BasicTestAPI(object):
 
 
     def get_stats (self):
+        if self.__invalid_stats:
+            # send a barrier
+            rc = self.client.block_on_stats()
+            self.__verify_rc(rc)
+            self.__invalid_stats = False
+
         total_stats = trex_stats.CPortStats(None)
 
         for port in self.client.ports.values():
             total_stats += port.port_stats
 
         return total_stats
+
+
+    # some internal methods
+
+    # verify RC return value
+    def __verify_rc (self, rc):
+        if not rc:
+            raise self.Failure(rc)
+
diff --git a/scripts/stl_test_example.py b/scripts/stl_test_example.py
index 689ed316..7974758d 100644
--- a/scripts/stl_test_example.py
+++ b/scripts/stl_test_example.py
@@ -1,24 +1,42 @@
-from stl_test_api import BasicTestAPI
 
-x = BasicTestAPI()
+# simple test that uses simple API with stateless TRex
+#from stl_test_api import BasicTestAPI
+api_path = os.path.dirname(os.path.abspath(__file__))
+sys.path.insert(0, os.path.join(api_path, '../automation/trex_control_plane/client/'))
 
-try:
-    x.connect()
-
-    s = x.get_stats()
-
-    print "input packets before test: %s" % s['ipackets']
-
-    x.inject_profile("stl/imix_1pkt.yaml", rate = "5gbps", duration = 1)
-    x.wait_while_traffic_on()
-
-    s = x.get_stats()
-
-    print "input packets after test: %s" % s['ipackets']
-
-    print "Test passed :-)\n"
+from trex_stateless_client import CTRexStatelessClient, LoggerApi
 
+c = CTRexStatelessClient()
+try:
+    c.connect()
+    #before_ipackets = x.get_stats().get_rel('ipackets')
+    c.cmd_start_line("-f stl/imix_1pkt.yaml -m 5mpps -d 1")
+    c.cmd_wait_on_traffic()
 finally:
-    x.disconnect()
+    c.disconnect()
+
+#x = BasicTestAPI()
+#
+#try:
+#    x.connect()
+#
+#    before_ipackets = x.get_stats().get_rel('ipackets')
+#
+#    print "input packets before test: %s" % before_ipackets
+#
+#    x.inject_profile("stl/imix_1pkt.yaml", rate = "5mpps", duration = 1)
+#    x.wait_while_traffic_on()
+#
+#    after_ipackets = x.get_stats().get_rel('ipackets')
+#
+#    print "input packets after test: %s" % after_ipackets
+#
+#    if (after_ipackets - before_ipackets) == 5000000:
+#        print "Test passed :-)\n"
+#    else:
+#        print "Test failed :-(\n"
+#
+#finally:
+#    x.disconnect()
 
 
diff --git a/src/internal_api/trex_platform_api.h b/src/internal_api/trex_platform_api.h
index 3ae49da8..f8bc10d5 100644
--- a/src/internal_api/trex_platform_api.h
+++ b/src/internal_api/trex_platform_api.h
@@ -110,6 +110,7 @@ public:
     virtual void get_global_stats(TrexPlatformGlobalStats &stats) const = 0;
     virtual void get_interface_stats(uint8_t interface_id, TrexPlatformInterfaceStats &stats) const = 0;
     virtual void get_interface_info(uint8_t interface_id, std::string &driver_name, driver_speed_e &speed) const = 0;
+    virtual void publish_async_data_now(uint32_t key) const = 0;
     virtual uint8_t get_dp_core_count() const = 0;
     
     virtual ~TrexPlatformApi() {}
@@ -127,6 +128,7 @@ public:
     void get_global_stats(TrexPlatformGlobalStats &stats) const;
     void get_interface_stats(uint8_t interface_id, TrexPlatformInterfaceStats &stats) const;
     void get_interface_info(uint8_t interface_id, std::string &driver_name, driver_speed_e &speed) const;
+    void publish_async_data_now(uint32_t key) const;
     uint8_t get_dp_core_count() const;
     
 };
@@ -146,6 +148,7 @@ public:
         speed = SPEED_INVALID;
     }
 
+    void publish_async_data_now(uint32_t key) const {}
     uint8_t get_dp_core_count() const;
 };
 
diff --git a/src/main_dpdk.cpp b/src/main_dpdk.cpp
index 7c25b2e2..a5e87172 100755
--- a/src/main_dpdk.cpp
+++ b/src/main_dpdk.cpp
@@ -2609,8 +2609,12 @@ private:
     bool is_all_cores_finished();
 
 public:
+
+    void publish_async_data();
+    void publish_async_barrier(uint32_t key);
+
     void dump_stats(FILE *fd,
-                    std::string & json,CGlobalStats::DumpFormat format);
+                    CGlobalStats::DumpFormat format);
     void dump_template_info(std::string & json);
     bool sanity_check();
     void update_stats(void);
@@ -2649,6 +2653,7 @@ private:
     CLatencyVmPort      m_latency_vm_vports[BP_MAX_PORTS]; /* vm driver */
     CLatencyPktInfo     m_latency_pkt;
     TrexPublisher       m_zmq_publisher;
+    CGlobalStats        m_stats;
 
 public:
     TrexStateless       *m_trex_stateless;
@@ -3448,11 +3453,11 @@ void CGlobalTRex::dump_template_info(std::string & json){
     json+="]}" ;
 }
 
-void CGlobalTRex::dump_stats(FILE *fd,std::string & json,
-                                CGlobalStats::DumpFormat format){
-    CGlobalStats  stats;
+void CGlobalTRex::dump_stats(FILE *fd, CGlobalStats::DumpFormat format){
+
     update_stats();
-    get_stats(stats);
+    get_stats(m_stats);
+
     if (format==CGlobalStats::dmpTABLE) {
         if ( m_io_modes.m_g_mode == CTrexGlobalIoMode::gNORMAL ){
             switch (m_io_modes.m_pp_mode ){
@@ -3461,11 +3466,11 @@ void CGlobalTRex::dump_stats(FILE *fd,std::string & json,
                     break;
                 case CTrexGlobalIoMode::ppTABLE:
                     fprintf(fd,"\n-Per port stats table \n");
-                    stats.Dump(fd,CGlobalStats::dmpTABLE);
+                    m_stats.Dump(fd,CGlobalStats::dmpTABLE);
                     break;
                 case CTrexGlobalIoMode::ppSTANDARD:
                     fprintf(fd,"\n-Per port stats - standard\n");
-                    stats.Dump(fd,CGlobalStats::dmpSTANDARD);
+                    m_stats.Dump(fd,CGlobalStats::dmpSTANDARD);
                     break;
             };
 
@@ -3475,22 +3480,62 @@ void CGlobalTRex::dump_stats(FILE *fd,std::string & json,
                     break;
                 case   CTrexGlobalIoMode::apENABLE:
                     fprintf(fd,"\n-Global stats enabled \n");
-                    stats.DumpAllPorts(fd);
+                    m_stats.DumpAllPorts(fd);
                     break;
             };
         }
     }else{
         /* at exit , always need to dump it in standartd mode for scripts*/
-        stats.Dump(fd,format);
-        stats.DumpAllPorts(fd);
+        m_stats.Dump(fd,format);
+        m_stats.DumpAllPorts(fd);
     }
-    stats.dump_json(json);
+    
+}
+
+
+void 
+CGlobalTRex::publish_async_data() {
+     std::string json;
+
+     m_stats.dump_json(json);
+     m_zmq_publisher.publish_json(json);
+
+     /* generator json , all cores are the same just sample the first one */
+     m_fl.m_threads_info[0]->m_node_gen.dump_json(json);
+     m_zmq_publisher.publish_json(json);
+
+        
+     if ( !get_is_stateless() ){
+         dump_template_info(json);
+         m_zmq_publisher.publish_json(json);
+     }
+
+     if ( get_is_rx_check_mode() ) {
+         m_mg.rx_check_dump_json(json );
+         m_zmq_publisher.publish_json(json);
+     }
+
+     /* backward compatible */
+     m_mg.dump_json(json );
+     m_zmq_publisher.publish_json(json);
+
+     /* more info */
+     m_mg.dump_json_v2(json );
+     m_zmq_publisher.publish_json(json);
+
+     /* stateless info - nothing for now */
+     //m_trex_stateless->generate_publish_snapshot(json);
+     //m_zmq_publisher.publish_json(json);
 }
 
+void 
+CGlobalTRex::publish_async_barrier(uint32_t key) {
+    m_zmq_publisher.publish_barrier(key);
+}
 
-int CGlobalTRex::run_in_master(){
+int CGlobalTRex::run_in_master() {
 
-    std::string json;
+   
     bool was_stopped=false;
 
     if ( get_is_stateless() ) {
@@ -3530,7 +3575,7 @@ int CGlobalTRex::run_in_master(){
             m_io_modes.DumpHelp(stdout);
         }
 
-        dump_stats(stdout,json,CGlobalStats::dmpTABLE);
+        dump_stats(stdout,CGlobalStats::dmpTABLE);
 
         if (m_io_modes.m_g_mode == CTrexGlobalIoMode::gNORMAL ) {
     		fprintf (stdout," current time    : %.1f sec  \n",now_sec());
@@ -3542,16 +3587,6 @@ int CGlobalTRex::run_in_master(){
     		fprintf (stdout," test duration   : %.1f sec  \n",d);
         }
 
-        m_zmq_publisher.publish_json(json);
-
-        /* generator json , all cores are the same just sample the first one */
-        m_fl.m_threads_info[0]->m_node_gen.dump_json(json);
-        m_zmq_publisher.publish_json(json);
-
-        if ( !get_is_stateless() ){
-            dump_template_info(json);
-            m_zmq_publisher.publish_json(json);
-        }
 
         if ( !CGlobalInfo::m_options.is_latency_disabled() ){
             m_mg.update();
@@ -3591,24 +3626,12 @@ int CGlobalTRex::run_in_master(){
 
             }
 
-            if ( get_is_rx_check_mode() ) {
-                m_mg.rx_check_dump_json(json );
-                m_zmq_publisher.publish_json(json);
-            }
-
-            /* backward compatible */
-            m_mg.dump_json(json );
-            m_zmq_publisher.publish_json(json);
-
-            /* more info */
-            m_mg.dump_json_v2(json );
-            m_zmq_publisher.publish_json(json);
+          
 
         }
 
-        /* stateless info */
-        m_trex_stateless->generate_publish_snapshot(json);
-        m_zmq_publisher.publish_json(json);
+        /* publish data */
+        publish_async_data();
 
         /* check from messages from DP */
         check_for_dp_messages();
@@ -3679,11 +3702,10 @@ int CGlobalTRex::run_in_core(virtual_thread_id_t virt_core_id){
 int CGlobalTRex::stop_master(){
 
     delay(1000);
-    std::string json;
     fprintf(stdout," ==================\n");
     fprintf(stdout," interface sum \n");
     fprintf(stdout," ==================\n");
-    dump_stats(stdout,json,CGlobalStats::dmpSTANDARD);
+    dump_stats(stdout,CGlobalStats::dmpSTANDARD);
     fprintf(stdout," ==================\n");
     fprintf(stdout," \n\n");
 
@@ -3724,7 +3746,7 @@ int CGlobalTRex::stop_master(){
         m_mg.DumpRxCheckVerification(stdout,total_tx_rx_check);
     }
     
-    dump_stats(stdout,json,CGlobalStats::dmpSTANDARD);
+    dump_stats(stdout,CGlobalStats::dmpSTANDARD);
     dump_post_test_stats(stdout);
     m_fl.Delete();
 
@@ -4899,3 +4921,10 @@ TrexDpdkPlatformApi::get_interface_info(uint8_t interface_id,
     driver_name = CTRexExtendedDriverDb::Ins()->get_driver_name();
     speed = CTRexExtendedDriverDb::Ins()->get_drv()->get_driver_speed();
 }
+
+void
+TrexDpdkPlatformApi::publish_async_data_now(uint32_t key) const {
+    g_trex.publish_async_data();
+    g_trex.publish_async_barrier(key);
+}
+
diff --git a/src/mock/trex_platform_api_mock.cpp b/src/mock/trex_platform_api_mock.cpp
index 416c4b69..7cacd96c 100644
--- a/src/mock/trex_platform_api_mock.cpp
+++ b/src/mock/trex_platform_api_mock.cpp
@@ -51,3 +51,4 @@ void
 TrexMockPlatformApi::port_id_to_cores(uint8_t port_id, std::vector<std::pair<uint8_t, uint8_t>> &cores_id_list) const {
     cores_id_list.push_back(std::make_pair(0, 0));
 }
+
diff --git a/src/publisher/trex_publisher.cpp b/src/publisher/trex_publisher.cpp
index 35653069..f56d56df 100644
--- a/src/publisher/trex_publisher.cpp
+++ b/src/publisher/trex_publisher.cpp
@@ -94,6 +94,21 @@ TrexPublisher::publish_event(event_type_e type, const Json::Value &data) {
     publish_json(s);
 }
 
+void
+TrexPublisher::publish_barrier(uint32_t key) {
+    Json::FastWriter writer;
+    Json::Value value;
+    std::string s;
+    
+    value["name"] = "trex-barrier";
+    value["type"] = key;
+    value["data"] = Json::objectValue;
+
+    s = writer.write(value);
+    publish_json(s);
+}
+
+
 /**
  * error handling
  * 
diff --git a/src/publisher/trex_publisher.h b/src/publisher/trex_publisher.h
index 52978476..f086babb 100644
--- a/src/publisher/trex_publisher.h
+++ b/src/publisher/trex_publisher.h
@@ -53,8 +53,20 @@ public:
         
     };
 
+    /**
+     * publishes an async event
+     * 
+     */
     virtual void publish_event(event_type_e type, const Json::Value &data = Json::nullValue);
 
+    /**
+     * publishes a barrier requested by the user
+     * 
+     * @author imarom (17-Jan-16)
+     * 
+     */
+    virtual void publish_barrier(uint32_t key);
+
 private:
     void show_zmq_last_error(const std::string &err);
 private:
diff --git a/src/rpc-server/commands/trex_rpc_cmd_general.cpp b/src/rpc-server/commands/trex_rpc_cmd_general.cpp
index a701f6db..66999144 100644
--- a/src/rpc-server/commands/trex_rpc_cmd_general.cpp
+++ b/src/rpc-server/commands/trex_rpc_cmd_general.cpp
@@ -317,3 +317,19 @@ TrexRpcCmdGetPortStatus::_run(const Json::Value &params, Json::Value &result) {
     return (TREX_RPC_CMD_OK);
 }
 
+/**
+ * publish async data now (fast flush)
+ * 
+ */
+trex_rpc_cmd_rc_e
+TrexRpcPublishNow::_run(const Json::Value &params, Json::Value &result) {
+    TrexStateless *main = get_stateless_obj();
+
+    uint32_t key = parse_uint32(params, "key", result);
+
+    main->get_platform_api()->publish_async_data_now(key);
+
+    result["result"] = Json::objectValue;
+    return (TREX_RPC_CMD_OK);
+
+}
diff --git a/src/rpc-server/commands/trex_rpc_cmds.h b/src/rpc-server/commands/trex_rpc_cmds.h
index b1750053..081398d1 100644
--- a/src/rpc-server/commands/trex_rpc_cmds.h
+++ b/src/rpc-server/commands/trex_rpc_cmds.h
@@ -56,6 +56,7 @@ TREX_RPC_CMD_DEFINE(TrexRpcCmdTestSub,    "test_sub", 2, false);
  * general cmds
  */
 TREX_RPC_CMD_DEFINE(TrexRpcCmdPing,       "ping",                 0, false);
+TREX_RPC_CMD_DEFINE(TrexRpcPublishNow,    "publish_now",          1, false);
 TREX_RPC_CMD_DEFINE(TrexRpcCmdGetCmds,    "get_supported_cmds",   0, false);
 TREX_RPC_CMD_DEFINE(TrexRpcCmdGetVersion, "get_version",          0, false);
 
diff --git a/src/rpc-server/trex_rpc_async_server.cpp b/src/rpc-server/trex_rpc_async_server.cpp
index 6e5fbfc6..aee92539 100644
--- a/src/rpc-server/trex_rpc_async_server.cpp
+++ b/src/rpc-server/trex_rpc_async_server.cpp
@@ -51,6 +51,8 @@ TrexRpcServerAsync::_prepare() {
  */
 void 
 TrexRpcServerAsync::_rpc_thread_cb() {
+/* disabled, using the main publisher */
+#if 0
     std::stringstream ss;
 
     /* create a socket based on the configuration */
@@ -105,6 +107,7 @@ TrexRpcServerAsync::_rpc_thread_cb() {
 
     /* must be closed from the same thread */
     zmq_close(m_socket);
+#endif
 }
 
 void 
diff --git a/src/rpc-server/trex_rpc_cmds_table.cpp b/src/rpc-server/trex_rpc_cmds_table.cpp
index 82c723b7..5218cd0a 100644
--- a/src/rpc-server/trex_rpc_cmds_table.cpp
+++ b/src/rpc-server/trex_rpc_cmds_table.cpp
@@ -34,6 +34,7 @@ TrexRpcCommandsTable::TrexRpcCommandsTable() {
 
     /* general */
     register_command(new TrexRpcCmdPing());
+    register_command(new TrexRpcPublishNow());
     register_command(new TrexRpcCmdGetCmds());
     register_command(new TrexRpcCmdGetVersion());
     register_command(new TrexRpcCmdGetSysInfo());
diff --git a/src/sim/trex_sim_stateless.cpp b/src/sim/trex_sim_stateless.cpp
index 215315e0..13f264cf 100644
--- a/src/sim/trex_sim_stateless.cpp
+++ b/src/sim/trex_sim_stateless.cpp
@@ -97,6 +97,10 @@ public:
         }
     }
 
+    virtual void publish_async_data_now(uint32_t key) const {
+
+    }
+
 private:
     int m_dp_core_count;
 };