diff --git a/config/xp/ab b/config/xp/ab
new file mode 100644
index 0000000..9780b4b
--- /dev/null
+++ b/config/xp/ab
@@ -0,0 +1 @@
+xpType:ab
diff --git a/core/experience.py b/core/experience.py
index 80485ab..8b35b77 100644
--- a/core/experience.py
+++ b/core/experience.py
@@ -1,6 +1,155 @@
-from .parameter import ExperienceParameter
+from .parameter import Parameter
 from topos.multi_interface import MultiInterfaceTopo
 
+class ExperienceParameter(Parameter):
+    """
+    Handler for experience parameters stored in configuration files
+    """
+    RMEM       = "rmem"
+    WMEM       = "wmem"
+    SCHED      = "sched"
+    CC		   = "congctrl"
+    AUTOCORK   = "autocork"
+    EARLYRETRANS = "earlyRetrans"
+    KERNELPM   = "kpm"
+    KERNELPMC  = "kpmc" #kernel path manager client / server
+    KERNELPMS  = "kpms"
+    USERPMC	   = "upmc"
+    USERPMS	   = "upms" #userspace path manager client / server
+    USERPMCARGS   = "upmc_args"
+    USERPMSARGS   = "upms_args"
+    CLIENTPCAP = "clientPcap"
+    SERVERPCAP = "serverPcap"
+    SNAPLENPCAP = "snaplenPcap"
+    XPTYPE     = "xpType"
+    PINGCOUNT  = "pingCount"
+    NETPERFTESTLEN = "netperfTestlen"
+    NETPERFTESTNAME = "netperfTestname"
+    NETPERFREQRESSIZE = "netperfReqresSize"
+
+    SIRIRUNTIME = "siriRunTime"
+    SIRIQUERYSIZE = "siriQuerySize"
+    SIRIRESPONSESIZE = "siriResponseSize"
+    SIRIDELAYQUERYRESPONSE = "siriDelayQueryResponse"
+    SIRIMINPAYLOADSIZE = "siriMinPayloadSize"
+    SIRIMAXPAYLOADSIZE = "siriMaxPayloadSize"
+    SIRIINTERVALTIMEMS = "siriIntervalTimeMs"
+    SIRIBUFFERSIZE = "siriBufferSize"
+    SIRIBURSTSIZE = "siriBurstSize"
+    SIRIINTERVALBURSTTIMEMS = "siriIntervalBurstTimeMs"
+    VLCFILE = "vlcFile"
+    VLCTIME = "vlcTime"
+    DITGKBYTES = "ditgKBytes"
+    DITGCONSTANTPACKETSIZE = "ditgConstantPacketSize"
+    DITGMEANPOISSONPACKETSSEC = "ditgMeanPoissonPacketsSec"
+    DITGCONSTANTPACKETSSEC = "ditgConstantPacketsSec"
+    DITGBURSTSONPACKETSSEC = "ditgBurstsOnPacketsSec"
+    DITGBURSTSOFFPACKETSSEC = "ditgBurstsOffPacketsSec"
+    MSGCLIENTSLEEP = "msgClientSleep"
+    MSGSERVERSLEEP = "msgServerSleep"
+    MSGNBREQUESTS = "msgNbRequests"
+    MSGBYTES = "msgBytes"
+    QUICMULTIPATH = "quicMultipath"
+    QUICSIRIRUNTIME = "quicSiriRunTime"
+    PRIOPATH0 = "prioPath0"
+    PRIOPATH1 = "prioPath1"
+    BACKUPPATH0 = "backupPath0"
+    BACKUPPATH1 = "backupPath1"
+    EXPIRATION = "expiration"
+    BUFFERAUTOTUNING = "bufferAutotuning"
+    METRIC = "metric"
+
+
+    # Global sysctl keys
+    SYSCTL_KEY = {
+        RMEM: "net.ipv4.tcp_rmem",
+        WMEM: "net.ipv4.tcp_wmem",
+        KERNELPM: "net.mptcp.mptcp_path_manager",
+        SCHED: "net.mptcp.mptcp_scheduler",
+        CC: "net.ipv4.tcp_congestion_control",
+        AUTOCORK: "net.ipv4.tcp_autocorking",
+        EARLYRETRANS: "net.ipv4.tcp_early_retrans",
+        EXPIRATION: "net.mptcp.mptcp_sched_expiration",
+        BUFFERAUTOTUNING: "net.ipv4.tcp_moderate_rcvbuf",
+    }
+
+    # sysctl keys specific to client and server, independently
+    SYSCTL_KEY_CLIENT = {
+        KERNELPMC: "net.mptcp.mptcp_path_manager",
+    }
+    SYSCTL_KEY_SERVER = {
+        KERNELPMS: "net.mptcp.mptcp_path_manager",
+    }
+
+    # Default values for unspecified experience parameters
+    DEFAULT_PARAMETERS = {
+        RMEM: "10240 87380 16777216",
+        WMEM: "4096 16384 4194304",
+        KERNELPM: "fullmesh",
+        KERNELPMC: "fullmesh",
+        KERNELPMS: "fullmesh",
+        USERPMC: "fullmesh",
+        USERPMS: "fullmesh",
+        USERPMCARGS: "",
+        USERPMSARGS: "",
+        CC: "olia",
+        SCHED: "default",
+        AUTOCORK: "1",
+        EARLYRETRANS: "3",
+        EXPIRATION: "300",
+        BUFFERAUTOTUNING: "1",
+        METRIC: "-1",
+        CLIENTPCAP: "no",
+        SERVERPCAP: "no",
+        SNAPLENPCAP: "65535",  # Default snapping value of tcpdump
+        XPTYPE: "none",
+        PINGCOUNT: "5",
+        NETPERFTESTLEN: "10",
+        NETPERFTESTNAME: "TCP_RR",
+        NETPERFREQRESSIZE: "2K,256",
+        SIRIQUERYSIZE: "2500",
+        SIRIRESPONSESIZE: "750",
+        SIRIDELAYQUERYRESPONSE: "0",
+        SIRIMINPAYLOADSIZE: "85",
+        SIRIMAXPAYLOADSIZE: "500",
+        SIRIINTERVALTIMEMS: "333",
+        SIRIBUFFERSIZE: "9",
+        SIRIBURSTSIZE: "0",
+        SIRIINTERVALBURSTTIMEMS: "0",
+        VLCFILE: "bunny_ibmff_360.mpd",
+        VLCTIME: "0",
+        DITGKBYTES: "10000",
+        DITGCONSTANTPACKETSIZE: "1428",
+        DITGMEANPOISSONPACKETSSEC: "0",
+        DITGCONSTANTPACKETSSEC: "0",
+        DITGBURSTSONPACKETSSEC: "0",
+        DITGBURSTSOFFPACKETSSEC: "0",
+        MSGCLIENTSLEEP: "5.0",
+        MSGSERVERSLEEP: "5.0",
+        MSGNBREQUESTS: "5",
+        MSGBYTES: "1200",
+        QUICMULTIPATH: "0",
+        PRIOPATH0: "0",
+        PRIOPATH1: "0",
+        BACKUPPATH0: "0",
+        BACKUPPATH1: "0",
+    }
+
+    def __init__(self, parameter_filename):
+        super(ExperienceParameter, self).__init__(parameter_filename)
+        self.default_parameters = ExperienceParameter.DEFAULT_PARAMETERS
+
+    def get(self, key):
+        val = super(ExperienceParameter, self).get(key)
+        if val is None:
+            if key in self.default_parameters:
+                return self.default_parameters[key]
+            else:
+                raise Exception("Parameter not found " + key)
+        else:
+            return val
+
+
 class Experience(object):
     """
 	Base class to instantiate an experience to perform.
@@ -8,17 +157,34 @@ class Experience(object):
 	This class is not instantiable as it. You must define a child class with the
 	`NAME` attribute.
 
+    By default, an Experience relies on an instance of ExperienceParameter to
+    collect the parameters from the experience configuration file. However, an
+    experience may introduce specific parameters in the configuration file. In
+    such case, the inherinting class must override the `PARAMETER_CLASS` class
+    variable to point to another class inheriting from ExperienceParameter.
+
     Attributes:
         experience_parameter    Instance of ExperienceParameter
         topo                    Instance of Topo
         topo_config             Instance of TopoConfig
 	"""
+    PARAMETER_CLASS = ExperienceParameter
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        self.experience_parameter = experience_parameter
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        """
+        Instantiation of this base class only load the experience parameter
+        """
+        self.experience_parameter = self.__class__.PARAMETER_CLASS(experience_parameter_filename)
         self.topo = topo
         self.topo_config = topo_config
 
+    def load_parameters(self):
+        """
+        Load the parameter of interest from self.experience_parameter
+        """
+        # Nothing to do in the base class
+        pass
+
     def classic_run(self):
         """
         Default function to perform the experiment. It consists into three phases:
@@ -203,24 +369,24 @@ class Experience(object):
 
     def save_sysctl(self):
         self.sysctlBUP = {}
-        self._save_sysctl(ExperienceParameter.sysctlKey, self.sysctlBUP)
+        self._save_sysctl(ExperienceParameter.SYSCTL_KEY, self.sysctlBUP)
         self.sysctlBUPC = {}
-        self._save_sysctl(ExperienceParameter.sysctlKeyClient, self.sysctlBUPC,
+        self._save_sysctl(ExperienceParameter.SYSCTL_KEY_CLIENT, self.sysctlBUPC,
                 ns = True, who = self.topo_config.client)
         self.sysctlBUPS = {}
-        self._save_sysctl(ExperienceParameter.sysctlKeyServer, self.sysctlBUPS,
+        self._save_sysctl(ExperienceParameter.SYSCTL_KEY_SERVER, self.sysctlBUPS,
                 ns = True, who = self.topo_config.server)
 
     def _save_sysctl(self, sysctlDic, sysctlBUP, ns = False, who = None):
         for k in sysctlDic:
-            sysctlKey = sysctlDic[k]
-            cmd = self.cmdReadSysctl(sysctlKey)
+            SYSCTL_KEY = sysctlDic[k]
+            cmd = self.cmdReadSysctl(SYSCTL_KEY)
             if not ns:
                 val = self.topo.command_global(cmd)
             else:
                 val = self.topo.command_to(who, cmd)
             if val == "Error":
-                print("oooops can't get sysctl " + sysctlKey)
+                print("oooops can't get sysctl " + SYSCTL_KEY)
             else:
                 # For Python3 compatibility
                 if type(val) is bytes:
@@ -238,45 +404,45 @@ class Experience(object):
         return s
 
     def write_sysctl(self):
-        self._write_sysctl(ExperienceParameter.sysctlKey, self.sysctlBUP)
-        self._write_sysctl(ExperienceParameter.sysctlKeyClient, self.sysctlBUPC,
+        self._write_sysctl(ExperienceParameter.SYSCTL_KEY, self.sysctlBUP)
+        self._write_sysctl(ExperienceParameter.SYSCTL_KEY_CLIENT, self.sysctlBUPC,
                 ns = True, who = self.topo_config.client)
-        self._write_sysctl(ExperienceParameter.sysctlKeyServer, self.sysctlBUPS,
+        self._write_sysctl(ExperienceParameter.SYSCTL_KEY_SERVER, self.sysctlBUPS,
                 ns = True, who = self.topo_config.server)
 
     def _write_sysctl(self, sysctlDic, sysctlBUP, ns = False, who = None):
         for k in sysctlBUP:
-            sysctlKey = sysctlDic[k]
+            SYSCTL_KEY = sysctlDic[k]
             sysctlValue = self.experience_parameter.get(k)
-            cmd = self.cmd_write_sysctl(sysctlKey,sysctlValue)
+            cmd = self.cmd_write_sysctl(SYSCTL_KEY,sysctlValue)
             if not ns:
                 val = self.topo.command_global(cmd)
             else:
                 val = self.topo.command_to(who, cmd)
             if val == "Error":
-                print("oooops can't set sysctl " + sysctlKey)
+                print("oooops can't set sysctl " + SYSCTL_KEY)
 
 
     def backUpSysctl(self):
-        self._backUpSysctl(ExperienceParameter.sysctlKey, self.sysctlBUP)
-        self._backUpSysctl(ExperienceParameter.sysctlKeyClient, self.sysctlBUPC,
+        self._backUpSysctl(ExperienceParameter.SYSCTL_KEY, self.sysctlBUP)
+        self._backUpSysctl(ExperienceParameter.SYSCTL_KEY_CLIENT, self.sysctlBUPC,
                 ns = True, who = self.topo_config.client)
-        self._backUpSysctl(ExperienceParameter.sysctlKeyServer, self.sysctlBUPS,
+        self._backUpSysctl(ExperienceParameter.SYSCTL_KEY_SERVER, self.sysctlBUPS,
                 ns = True, who = self.topo_config.server)
 
 
     def _backUpSysctl(self, sysctlDic, sysctlBUP, ns = False, who = None):
         for k in sysctlBUP:
-            sysctlKey = sysctlDic[k]
+            SYSCTL_KEY = sysctlDic[k]
             sysctlValue = sysctlBUP[k]
-            cmd = self.cmd_write_sysctl(sysctlKey,sysctlValue)
+            cmd = self.cmd_write_sysctl(SYSCTL_KEY,sysctlValue)
             if not ns:
                 val = self.topo.command_global(cmd)
             else:
                 val = self.topo.command_to(who, cmd)
 
             if val == "Error":
-                print("oooops can't set sysctl " + sysctlKey)
+                print("oooops can't set sysctl " + SYSCTL_KEY)
 
 
     def runTcpDump(self):
@@ -292,3 +458,48 @@ class Experience(object):
                     "tcpdump -i any -s " + snaplenpcap + " -w server.pcap &")
         if spcap == "yes" or cpcap == "yes":
             self.topo.command_to(self.topo_config.client,"sleep 5")
+
+
+class RandomFileParameter(ExperienceParameter):
+    """
+    Parameters for the RandomFileExperience
+    """
+    FILE = "file"  # file to fetch; if random, we create a file with random data called random.
+    RANDOM_SIZE = "file_size"  # in KB
+
+    def __init__(self, experience_parameter_filename):
+        super(RandomFileParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            RandomFileParameter.FILE: "random",
+            RandomFileParameter.RANDOM_SIZE: "1024",
+        })
+
+class RandomFileExperience(Experience):
+    """
+    Enable a experience to use random files
+
+    This class is not directly instantiable
+    """
+    PARAMETER_CLASS = RandomFileParameter
+
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(RandomFileExperience, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
+        self.ping()
+        super(RandomFileExperience, self).classic_run()
+
+    def load_parameters(self):
+        super(RandomFileExperience, self).load_parameters()
+        self.file = self.experience_parameter.get(RandomFileParameter.FILE)
+        self.random_size = self.experience_parameter.get(RandomFileParameter.RANDOM_SIZE)
+
+    def prepare(self):
+        super(RandomFileExperience, self).prepare()
+        if self.file  == "random":
+            self.topo.command_to(self.topo_config.client,
+                "dd if=/dev/urandom of=random bs=1K count={}".format(self.random_size))
+
+    def clean(self):
+        super(RandomFileExperience, self).clean()
+        if self.file  == "random":
+            self.topo.command_to(self.topo_config.client, "rm random*")
diff --git a/core/parameter.py b/core/parameter.py
index feff15a..726972e 100644
--- a/core/parameter.py
+++ b/core/parameter.py
@@ -1,223 +1,45 @@
+import logging
 
 class Parameter(object):
-    def __init__(self, paramFile):
-        self.paramDic = {}
-        print("Create the param Object")
-        if paramFile is None:
-            print("default param...")
+    """
+    Generic handler for parameters stored in configuration files
+
+    Attributes:
+        parameters  dictionary containing the value for configuration parameters
+    """
+    def __init__(self, parameter_filename):
+        self.parameters = {}
+        if parameter_filename is None:
+            logging.warning("No parameter file provided; using default parameters")
         else:
-            self.loadParamFile(paramFile)
+            logging.info("Extract parameters from file {}".format(parameter_filename))
+            self.load_parameter_file(parameter_filename)
 
-    def loadParamFile(self, paramFile):
-        f = open(paramFile)
-        i = 0
-        for l in f:
-            i = i + 1
-            if l.startswith("#"):
-                continue
+    def load_parameter_file(self, parameter_filename):
+        with open(parameter_filename) as f:
+            for line in f.readlines():
+                # Ignore comments
+                if line.startswith("#"):
+                    continue
 
-            tab = l.split(":")
-            if len(tab) == 2:
-                k = tab[0]
-                val = tab[1].rstrip()
-                if k in self.paramDic:
-                    if not isinstance(self.paramDic[k], list):
-                        self.paramDic[k] = [self.paramDic[k]]
-                    self.paramDic[k].append(val)
-                else:
-                    self.paramDic[k] = val
-            else:
-                print("Ignored Line " + str(i))
-                print(l),
-                print("In file " + paramFile)
-        f.close()
+                try:
+                    # Also get rid of trailing characters
+                    key, value = line.strip().split(":")
+                    if key in self.parameters:
+                        if not isinstance(self.parameters[key], list):
+                            self.parameters[key] = [self.parameters[key]]
+                        self.parameters[key].append(value)
+                    else:
+                        self.parameters[key] =  value
+                except ValueError as e:
+                    logging.warning(
+                        "Got error '{}' for line '{}'; ignore it".format(e, line))
 
     def get(self, key):
-        if key in self.paramDic:
-            return self.paramDic[key]
-        return None
+        """
+        Get the parameter with key `key`. If it does not exist, return None
+        """
+        return self.parameters.get(key)
 
     def __str__(self):
-        s = self.paramDic.__str__()
-        return s
-
-
-class ExperienceParameter(Parameter):
-
-    RMEM       = "rmem"
-    WMEM       = "wmem"
-    SCHED      = "sched"
-    CC		   = "congctrl"
-    AUTOCORK   = "autocork"
-    EARLYRETRANS = "earlyRetrans"
-    KERNELPM   = "kpm"
-    KERNELPMC  = "kpmc" #kernel path manager client / server
-    KERNELPMS  = "kpms"
-    USERPMC	   = "upmc"
-    USERPMS	   = "upms" #userspace path manager client / server
-    USERPMCARGS   = "upmc_args"
-    USERPMSARGS   = "upms_args"
-    CLIENTPCAP = "clientPcap"
-    SERVERPCAP = "serverPcap"
-    SNAPLENPCAP = "snaplenPcap"
-    XPTYPE     = "xpType"
-    PINGCOUNT  = "pingCount"
-    DDIBS      = "ddIBS"
-    DDOBS      = "ddIBS"
-    DDCOUNT    = "ddCount"
-    PVRATELIMIT= "pvRateLimit"
-    PVG        = "pvG" #patched version of pv
-    PVZ        = "pvZ"
-    NCSERVERPORT = "ncServerPort"
-    NCCLIENTPORT = "ncClientPort"
-    CHANGEPV   = "changePv"
-    CHANGEPVAT = "changePvAt"
-    HTTPSFILE  = "file" # file to wget, if random : we create a file with random data called random.
-    HTTPSRANDOMSIZE = "file_size" # if file is set to random, define the size of the random file
-    EPLOADTESTDIR = "epload_test_dir"
-    HTTPFILE = "http_file"
-    HTTPRANDOMSIZE = "http_file_size"
-    NETPERFTESTLEN = "netperfTestlen"
-    NETPERFTESTNAME = "netperfTestname"
-    NETPERFREQRESSIZE = "netperfReqresSize"
-    ABCONCURRENTREQUESTS = "abConccurentRequests"
-    ABTIMELIMIT = "abTimelimit"
-    SIRIRUNTIME = "siriRunTime"
-    SIRIQUERYSIZE = "siriQuerySize"
-    SIRIRESPONSESIZE = "siriResponseSize"
-    SIRIDELAYQUERYRESPONSE = "siriDelayQueryResponse"
-    SIRIMINPAYLOADSIZE = "siriMinPayloadSize"
-    SIRIMAXPAYLOADSIZE = "siriMaxPayloadSize"
-    SIRIINTERVALTIMEMS = "siriIntervalTimeMs"
-    SIRIBUFFERSIZE = "siriBufferSize"
-    SIRIBURSTSIZE = "siriBurstSize"
-    SIRIINTERVALBURSTTIMEMS = "siriIntervalBurstTimeMs"
-    VLCFILE = "vlcFile"
-    VLCTIME = "vlcTime"
-    DITGKBYTES = "ditgKBytes"
-    DITGCONSTANTPACKETSIZE = "ditgConstantPacketSize"
-    DITGMEANPOISSONPACKETSSEC = "ditgMeanPoissonPacketsSec"
-    DITGCONSTANTPACKETSSEC = "ditgConstantPacketsSec"
-    DITGBURSTSONPACKETSSEC = "ditgBurstsOnPacketsSec"
-    DITGBURSTSOFFPACKETSSEC = "ditgBurstsOffPacketsSec"
-    IPERFTIME = "iperfTime"
-    IPERFPARALLEL = "iperfParallel"
-    MSGCLIENTSLEEP = "msgClientSleep"
-    MSGSERVERSLEEP = "msgServerSleep"
-    MSGNBREQUESTS = "msgNbRequests"
-    MSGBYTES = "msgBytes"
-    QUICMULTIPATH = "quicMultipath"
-    QUICSIRIRUNTIME = "quicSiriRunTime"
-    PRIOPATH0 = "prioPath0"
-    PRIOPATH1 = "prioPath1"
-    BACKUPPATH0 = "backupPath0"
-    BACKUPPATH1 = "backupPath1"
-    EXPIRATION = "expiration"
-    BUFFERAUTOTUNING = "bufferAutotuning"
-    METRIC = "metric"
-
-
-    # global sysctl
-    sysctlKey = {}
-    sysctlKey[RMEM] = "net.ipv4.tcp_rmem"
-    sysctlKey[WMEM] = "net.ipv4.tcp_wmem"
-    sysctlKey[KERNELPM] = "net.mptcp.mptcp_path_manager"
-    sysctlKey[SCHED] = "net.mptcp.mptcp_scheduler"
-    sysctlKey[CC] = "net.ipv4.tcp_congestion_control"
-    sysctlKey[AUTOCORK] = "net.ipv4.tcp_autocorking"
-    sysctlKey[EARLYRETRANS] = "net.ipv4.tcp_early_retrans"
-    sysctlKey[EXPIRATION] = "net.mptcp.mptcp_sched_expiration"
-    sysctlKey[BUFFERAUTOTUNING] = "net.ipv4.tcp_moderate_rcvbuf"
-
-
-    sysctlKeyClient = {}
-    sysctlKeyClient[KERNELPMC] = "net.mptcp.mptcp_path_manager"
-    sysctlKeyServer = {}
-    sysctlKeyServer[KERNELPMS] = "net.mptcp.mptcp_path_manager"
-
-    defaultValue = {}
-
-    defaultValue[RMEM] = "10240 87380 16777216"
-    defaultValue[WMEM] = "4096 16384 4194304"
-    defaultValue[KERNELPM] = "fullmesh"
-    defaultValue[KERNELPMC] = "fullmesh"
-    defaultValue[KERNELPMS] = "fullmesh"
-    defaultValue[USERPMC] = "fullmesh"
-    defaultValue[USERPMS] = "fullmesh"
-    defaultValue[USERPMCARGS] = ""
-    defaultValue[USERPMSARGS] = ""
-    defaultValue[CC] = "olia"
-    defaultValue[SCHED] = "default"
-    defaultValue[AUTOCORK] = "1"
-    defaultValue[EARLYRETRANS] = "3"
-    defaultValue[EXPIRATION] = "300"
-    defaultValue[BUFFERAUTOTUNING] = "1"
-    defaultValue[METRIC] = "-1"
-
-    defaultValue[CLIENTPCAP] = "no"
-    defaultValue[SERVERPCAP] = "no"
-    defaultValue[SNAPLENPCAP] = "65535"  # Default snapping value of tcpdump
-    defaultValue[XPTYPE] = "none"
-    defaultValue[PINGCOUNT] = "5"
-    defaultValue[DDIBS] = "1k"
-    defaultValue[DDOBS] = "1k"
-    defaultValue[DDCOUNT] = "5000" #5k * 1k = 5m
-    defaultValue[PVRATELIMIT] = "400k"
-    defaultValue[PVZ] = "10000"
-    defaultValue[PVG] = "10000"
-    defaultValue[NCSERVERPORT] = "33666"
-    defaultValue[NCCLIENTPORT] = "33555"
-    defaultValue[CHANGEPV] = "no"
-    defaultValue[HTTPSFILE] = "random"
-    defaultValue[HTTPSRANDOMSIZE] = "1024"
-    defaultValue[EPLOADTESTDIR] = "/bla/bla/bla"
-    defaultValue[HTTPFILE] = "random"
-    defaultValue[HTTPRANDOMSIZE] = "1024"
-    defaultValue[NETPERFTESTLEN] = "10"
-    defaultValue[NETPERFTESTNAME] = "TCP_RR"
-    defaultValue[NETPERFREQRESSIZE] = "2K,256"
-    defaultValue[ABCONCURRENTREQUESTS] = "50"
-    defaultValue[ABTIMELIMIT] = "20"
-    defaultValue[SIRIQUERYSIZE] = "2500"
-    defaultValue[SIRIRESPONSESIZE] = "750"
-    defaultValue[SIRIDELAYQUERYRESPONSE] = "0"
-    defaultValue[SIRIMINPAYLOADSIZE] = "85"
-    defaultValue[SIRIMAXPAYLOADSIZE] = "500"
-    defaultValue[SIRIINTERVALTIMEMS] = "333"
-    defaultValue[SIRIBUFFERSIZE] = "9"
-    defaultValue[SIRIBURSTSIZE] = "0"
-    defaultValue[SIRIINTERVALBURSTTIMEMS] = "0"
-    defaultValue[VLCFILE] = "bunny_ibmff_360.mpd"
-    defaultValue[VLCTIME] = "0"
-    defaultValue[DITGKBYTES] = "10000"
-    defaultValue[DITGCONSTANTPACKETSIZE] = "1428"
-    defaultValue[DITGMEANPOISSONPACKETSSEC] = "0"
-    defaultValue[DITGCONSTANTPACKETSSEC] = "0"
-    defaultValue[DITGBURSTSONPACKETSSEC] = "0"
-    defaultValue[DITGBURSTSOFFPACKETSSEC] = "0"
-    defaultValue[IPERFTIME] = "10"
-    defaultValue[IPERFPARALLEL] = "1"
-    defaultValue[MSGCLIENTSLEEP] = "5.0"
-    defaultValue[MSGSERVERSLEEP] = "5.0"
-    defaultValue[MSGNBREQUESTS] = "5"
-    defaultValue[MSGBYTES] = "1200"
-    defaultValue[QUICMULTIPATH] = "0"
-    defaultValue[PRIOPATH0] = "0"
-    defaultValue[PRIOPATH1] = "0"
-    defaultValue[BACKUPPATH0] = "0"
-    defaultValue[BACKUPPATH1] = "0"
-
-    def __init__(self, paramFile):
-        super(ExperienceParameter, self).__init__(paramFile)
-
-    def get(self, key):
-        val = super(ExperienceParameter, self).get(key)
-        if val is None:
-            if key in ExperienceParameter.defaultValue:
-                return ExperienceParameter.defaultValue[key]
-            else:
-                raise Exception("Parameter not found " + key)
-        else:
-            return val
-
-
+        return self.parameters.__str__()
diff --git a/core/topo.py b/core/topo.py
index b0ebcf3..f0cf21b 100644
--- a/core/topo.py
+++ b/core/topo.py
@@ -119,13 +119,13 @@ class TopoParameter(Parameter):
     RSUBNET = "rightSubnet"
     netemAt = "netemAt_"
     changeNetem = "changeNetem"
-    defaultValue = {}
-    defaultValue[LSUBNET] = "10.1."
-    defaultValue[RSUBNET] = "10.2."
-    defaultValue[changeNetem] = "false"
+    DEFAULT_PARAMETERS = {}
+    DEFAULT_PARAMETERS[LSUBNET] = "10.1."
+    DEFAULT_PARAMETERS[RSUBNET] = "10.2."
+    DEFAULT_PARAMETERS[changeNetem] = "false"
 
-    def __init__(self, paramFile):
-        Parameter.__init__(self, paramFile)
+    def __init__(self, parameter_filename):
+        Parameter.__init__(self, parameter_filename)
         self.linkCharacteristics = []
         self.loadLinkCharacteristics()
         self.loadNetemAt()
@@ -134,10 +134,10 @@ class TopoParameter(Parameter):
     def loadNetemAt(self):
         if not self.get(TopoParameter.changeNetem) == "yes":
             return
-        for k in sorted(self.paramDic):
+        for k in sorted(self.parameters):
             if k.startswith(TopoParameter.netemAt):
                 i = int(k[len(TopoParameter.netemAt):])
-                val = self.paramDic[k]
+                val = self.parameters[k]
                 if not isinstance(val, list):
                     tmp = val
                     val = []
@@ -159,9 +159,9 @@ class TopoParameter(Parameter):
 
     def loadLinkCharacteristics(self):
         i = 0
-        for k in sorted(self.paramDic):
+        for k in sorted(self.parameters):
             if k.startswith("path"):
-                tab = self.paramDic[k].split(",")
+                tab = self.parameters[k].split(",")
                 bup = False
                 loss = "0.0"
                 if len(tab) == 5:
@@ -180,13 +180,13 @@ class TopoParameter(Parameter):
                     i = i + 1
                 else:
                     print("Ignored path :")
-                    print(self.paramDic[k])
+                    print(self.parameters[k])
 
     def get(self, key):
         val = Parameter.get(self, key)
         if val is None:
-            if key in TopoParameter.defaultValue:
-                return TopoParameter.defaultValue[key]
+            if key in TopoParameter.DEFAULT_PARAMETERS:
+                return TopoParameter.DEFAULT_PARAMETERS[key]
             else:
                 raise Exception("Param not found " + key)
         else:
diff --git a/experiences/__init__.py b/experiences/__init__.py
index 607b7a8..4d3317d 100644
--- a/experiences/__init__.py
+++ b/experiences/__init__.py
@@ -8,4 +8,14 @@ pkg_dir = os.path.dirname(__file__)
 for (module_loader, name, ispkg) in pkgutil.iter_modules([pkg_dir]):
     importlib.import_module('.' + name, __package__)
 
-EXPERIENCES = {cls.NAME: cls for cls in Experience.__subclasses__()}
\ No newline at end of file
+# Track direct inheritance
+EXPERIENCES = {}
+
+def _get_all_subclasses(BaseClass):
+    for cls in BaseClass.__subclasses__():
+        if hasattr(cls, "NAME"):
+            EXPERIENCES[cls.NAME] = cls
+        
+        _get_all_subclasses(cls)
+
+_get_all_subclasses(Experience)
\ No newline at end of file
diff --git a/experiences/ab.py b/experiences/ab.py
index bb83c64..69b8e71 100644
--- a/experiences/ab.py
+++ b/experiences/ab.py
@@ -1,19 +1,30 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import RandomFileExperience, RandomFileParameter, ExperienceParameter
 import os
 
-class AB(Experience):
+
+class ABParameter(RandomFileParameter):
+    CONCURRENT_REQUESTS = "abConccurentRequests"
+    TIME_LIMIT = "abTimelimit"
+
+    def __init__(self, experience_parameter_filename):
+        super(ABParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            ABParameter.CONCURRENT_REQUESTS: "50",
+            ABParameter.TIME_LIMIT: "20",
+        })
+
+
+class AB(RandomFileExperience):
     NAME = "ab"
+    PARAMETER_CLASS = ABParameter
 
     SERVER_LOG = "ab_server.log"
     CLIENT_LOG = "ab_client.log"
     AB_BIN = "ab"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(AB, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(AB, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(AB, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client,
@@ -30,49 +41,39 @@ class AB(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPRANDOMSIZE)
-        self.concurrent_requests = self.experience_parameter.get(ExperienceParameter.ABCONCURRENTREQUESTS)
-        self.timelimit = self.experience_parameter.get(ExperienceParameter.ABTIMELIMIT)
+    def load_parameters(self):
+        super(AB, self).load_parameters()
+        self.concurrent_requests = self.experience_parameter.get(ABParameter.CONCURRENT_REQUESTS)
+        self.time_limit = self.experience_parameter.get(ABParameter.TIME_LIMIT)
 
     def prepare(self):
-        Experience.prepare(self)
+        super(AB, self).prepare()
         self.topo.command_to(self.topo_config.client, "rm " + \
                 AB.CLIENT_LOG )
         self.topo.command_to(self.topo_config.server, "rm " + \
                 AB.SERVER_LOG )
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client,
-                "dd if=/dev/urandom of=random bs=1K count=" + \
-                self.random_size)
 
-    def getAbServerCmd(self):
-        s = "python " + os.path.dirname(os.path.abspath(__file__))  + \
-                "/utils/http_server.py &>" + AB.SERVER_LOG + "&"
+    def get_ab_server_cmd(self):
+        s = "python {}/../utils/http_server.py &> {} 2>&1 &".format(
+            os.path.dirname(os.path.abspath(__file__)), AB.SERVER_LOG)
         print(s)
         return s
 
-    def getAbClientCmd(self):
-        s = AB.AB_BIN + " -c " + self.concurrent_requests + " -t " + \
-             self.timelimit + " http://" + self.topo_config.getServerIP() + "/" + self.file + \
-            " &>" + AB.CLIENT_LOG
+    def get_ab_client_cmd(self):
+        s = "{} -c {} -t {} http://{}/{} &> {}".format(AB.AB_BIN, self.concurrent_requests,
+            self.time_limit, self.topo_config.getServerIP(), self.file, AB.CLIENT_LOG)
         print(s)
         return s
 
     def clean(self):
-        Experience.clean(self)
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client, "rm random*")
-        #todo use cst
-        #self.topo.command_to(self.topo_config.server, "killall netcat")
-
+        super(AB, self).clean()
 
     def run(self):
-        cmd = self.getAbServerCmd()
+        cmd = self.get_ab_server_cmd()
         self.topo.command_to(self.topo_config.server, cmd)
-
-        self.topo.command_to(self.topo_config.client, "sleep 2")
-        cmd = self.getAbClientCmd()
+        print("Wait for the HTTP server to be up, this can take quite a while...")
+        self.topo.command_to(self.topo_config.client, "sleep 15")
+        cmd = self.get_ab_client_cmd()
         self.topo.command_to(self.topo_config.client, cmd)
         self.topo.command_to(self.topo_config.client, "sleep 2")
+        self.topo.get_cli()
diff --git a/experiences/ditg.py b/experiences/ditg.py
index 03fa96e..499a1fd 100644
--- a/experiences/ditg.py
+++ b/experiences/ditg.py
@@ -14,9 +14,9 @@ class DITG(Experience):
     PING_OUTPUT = "ping.log"
 
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(DITG, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(DITG, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(DITG, self).classic_run()
 
@@ -35,7 +35,7 @@ class DITG(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.kbytes = self.experience_parameter.get(ExperienceParameter.DITGKBYTES)
         self.constant_packet_size = self.experience_parameter.get(ExperienceParameter.DITGCONSTANTPACKETSIZE)
         self.mean_poisson_packets_sec = self.experience_parameter.get(ExperienceParameter.DITGMEANPOISSONPACKETSSEC)
diff --git a/experiences/epload.py b/experiences/epload.py
index b727dbd..c10fc74 100644
--- a/experiences/epload.py
+++ b/experiences/epload.py
@@ -1,8 +1,19 @@
 from core.experience import Experience, ExperienceParameter
 import os
 
+class EploadParameter(ExperienceParameter):
+    TEST_DIR = "test_dir"
+
+    def __init__(self, experience_parameter_filename):
+        super(EploadParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            TEST_DIR: "/bla/bla/bla",
+        })
+
+
 class Epload(Experience):
     NAME = "epload"
+    PARAMETER_CLASS = EploadParameter
 
     SERVER_LOG = "http_server.log"
     EPLOAD_LOG = "epload.log"
@@ -10,9 +21,9 @@ class Epload(Experience):
     EPLOAD_EMULATOR="/home/mininet/epload/epload/emulator/run.js"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(Epload, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(Epload, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(Epload, self).classic_run()
 
@@ -31,8 +42,8 @@ class Epload(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.epload_test_dir = self.experience_parameter.get(ExperienceParameter.EPLOADTESTDIR)
+    def load_parameters(self):
+        self.test_dir = self.experience_parameter.get(EploadParameter.TEST_DIR)
 
     def prepare(self):
         super(Epload, self).prepare()
@@ -54,19 +65,19 @@ class Epload(Experience):
     def getEploadClientCmd(self):
         s = Epload.NODE_BIN + " " + Epload.EPLOAD_EMULATOR + \
                 " http " + \
-                self.epload_test_dir + " &>" + Epload.EPLOAD_LOG
+                self.test_dir + " &>" + Epload.EPLOAD_LOG
         print(s)
         return s
 
     def getSubHostCmd(self):
-        s = "for f in `ls " + self.epload_test_dir + "/*`; do " + \
+        s = "for f in `ls " + self.test_dir + "/*`; do " + \
             " sed -i 's/@host@/" + self.topo_config.getServerIP() + "/' " + \
             "$f; done"
         print(s)
         return s
 
     def getSubBackHostCmd(self):
-        s = "for f in `ls " + self.epload_test_dir + "/*`; do " + \
+        s = "for f in `ls " + self.test_dir + "/*`; do " + \
             " sed -i 's/" + self.topo_config.getServerIP() + "/@host@/' " + \
             "$f; done"
         print(s)
diff --git a/experiences/http.py b/experiences/http.py
index 6c616ca..5230bc4 100644
--- a/experiences/http.py
+++ b/experiences/http.py
@@ -1,7 +1,7 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import ExperienceParameter, RandomFileExperience, RandomFileParameter
 import os
 
-class HTTP(Experience):
+class HTTP(RandomFileExperience):
     NAME = "http"
 
     SERVER_LOG = "http_server.log"
@@ -9,11 +9,9 @@ class HTTP(Experience):
     WGET_BIN = "wget"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(HTTP, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(HTTP, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        # Just rely on RandomFileExperiment
+        super(HTTP, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client, "rm " + \
@@ -30,9 +28,9 @@ class HTTP(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPRANDOMSIZE)
+    def load_parameters(self):
+        # Just rely on RandomFileExperiment
+        super(HTTP, self).load_parameters()
 
     def prepare(self):
         super(HTTP, self).prepare()
@@ -40,26 +38,20 @@ class HTTP(Experience):
                 HTTP.CLIENT_LOG )
         self.topo.command_to(self.topo_config.server, "rm " + \
                 HTTP.SERVER_LOG )
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client,
-                "dd if=/dev/urandom of=random bs=1K count=" + \
-                self.random_size)
 
     def getHTTPServerCmd(self):
-        s = "/etc/init.d/apache2 restart &>" + HTTP.SERVER_LOG + "&"
+        s = "/etc/init.d/apache2 restart &> {}&".format(HTTP.SERVER_LOG)
         print(s)
         return s
 
     def getHTTPClientCmd(self):
-        s = "(time " + HTTP.WGET_BIN + " http://" + self.topo_config.getServerIP() + \
-                "/" + self.file + " --no-check-certificate) &>" + HTTP.CLIENT_LOG
+        s = "(time {} http://{}/{} --no-check-certificate) &> {}".format(HTTP.WGET_BIN,
+            self.topo_config.getServerIP(), self.file, HTTP.CLIENT_LOG)
         print(s)
         return s
 
     def clean(self):
         super(HTTP, self).clean()
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client, "rm random*")
 
     def run(self):
         cmd = self.getHTTPServerCmd()
diff --git a/experiences/https.py b/experiences/https.py
index 6b78994..d307684 100644
--- a/experiences/https.py
+++ b/experiences/https.py
@@ -1,7 +1,7 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import ExperienceParameter, RandomFileExperience, RandomFileParameter
 import os
 
-class HTTPS(Experience):
+class HTTPS(RandomFileExperience):
     NAME = "https"
 
     SERVER_LOG = "https_server.log"
@@ -9,11 +9,9 @@ class HTTPS(Experience):
     WGET_BIN = "wget"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(HTTPS, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(HTTPS, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        # Just rely on RandomFileExperiment
+        super(HTTPS, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client, "rm " + \
@@ -30,9 +28,9 @@ class HTTPS(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPSFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPSRANDOMSIZE)
+    def load_parameters(self):
+        # Just rely on RandomFileExperiment
+        super(HTTPS, self).load_parameters()
 
     def prepare(self):
         super(HTTPS, self).prepare()
@@ -40,10 +38,6 @@ class HTTPS(Experience):
                 HTTPS.CLIENT_LOG )
         self.topo.command_to(self.topo_config.server, "rm " + \
                 HTTPS.SERVER_LOG )
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client,
-                "dd if=/dev/urandom of=random bs=1K count=" + \
-                self.random_size)
 
     def getHTTPSServerCmd(self):
         s = "python {}/../utils/https_server.py {}/../utils/server.pem &> {}&".format(os.path.dirname(os.path.abspath(__file__)),
@@ -59,8 +53,6 @@ class HTTPS(Experience):
 
     def clean(self):
         super(HTTPS, self).clean()
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client, "rm random*")
 
     def run(self):
         cmd = self.getHTTPSServerCmd()
@@ -68,7 +60,7 @@ class HTTPS(Experience):
         self.topo.command_to(self.topo_config.server, cmd)
 
         print("Waiting for the server to run")
-        self.topo.command_to(self.topo_config.client, "sleep 15")
+        self.topo.command_to(self.topo_config.client, "sleep 2")
         cmd = self.getHTTPSClientCmd()
         self.topo.command_to(self.topo_config.client, "netstat -sn > netstat_client_before")
         self.topo.command_to(self.topo_config.client, cmd)
diff --git a/experiences/iperf.py b/experiences/iperf.py
index 6246ec6..d06609c 100644
--- a/experiences/iperf.py
+++ b/experiences/iperf.py
@@ -1,17 +1,29 @@
 from core.experience import Experience, ExperienceParameter
 import os
 
+class IPerfParameter(ExperienceParameter):
+    TIME = "iperfTime"
+    PARALLEL = "iperfParallel"
+
+    def __init__(self, experience_parameter_filename):
+        super(IPerfParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            IPerfParameter.TIME: "10",
+            IPerfParameter.PARALLEL: "1",
+        })
+
 class IPerf(Experience):
     NAME = "iperf"
+    PARAMETER_CLASS = IPerfParameter
 
     IPERF_LOG = "iperf.log"
     SERVER_LOG = "server.log"
     IPERF_BIN = "iperf3"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(IPerf, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(IPerf, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(IPerf, self).classic_run()
 
@@ -30,9 +42,9 @@ class IPerf(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.time = self.experience_parameter.get(ExperienceParameter.IPERFTIME)
-        self.parallel = self.experience_parameter.get(ExperienceParameter.IPERFPARALLEL)
+    def load_parameters(self):
+        self.time = self.experience_parameter.get(IPerfParameter.TIME)
+        self.parallel = self.experience_parameter.get(IPerfParameter.PARALLEL)
 
     def prepare(self):
         super(IPerf, self).prepare()
diff --git a/experiences/msg.py b/experiences/msg.py
index 6244274..09620ec 100644
--- a/experiences/msg.py
+++ b/experiences/msg.py
@@ -9,9 +9,9 @@ class Msg(Experience):
     CLIENT_ERR = "msg_client.err"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(Msg, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(Msg, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(Msg, self).classic_run()
 
@@ -30,7 +30,7 @@ class Msg(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.client_sleep = self.experience_parameter.get(ExperienceParameter.MSGCLIENTSLEEP)
         self.server_sleep = self.experience_parameter.get(ExperienceParameter.MSGSERVERSLEEP)
         self.nb_requests = self.experience_parameter.get(ExperienceParameter.MSGNBREQUESTS)
diff --git a/experiences/nc.py b/experiences/nc.py
index 3631cb0..cd755e8 100644
--- a/experiences/nc.py
+++ b/experiences/nc.py
@@ -5,30 +5,49 @@ Should be the mother of ExperienceNCPV, shame on me, should rewrite
 ExperienceNCPV as daughter class of this one.
 """
 
+class NCParameter(ExperienceParameter):
+    DD_IBS      = "ddIBS"
+    DD_OBS      = "ddIBS"
+    DD_COUNT    = "ddCount"
+    SERVER_PORT = "ncServerPort"
+    CLIENT_PORT = "ncClientPort"
+
+    def __init__(self, experience_parameter_filename):
+        super(NCParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            NCParameter.DD_IBS: "1k",
+            NCParameter.DD_OBS: "1k",
+            NCParameter.DD_COUNT: "5000", #5k * 1k = 5m
+            NCParameter.SERVER_PORT: "33666",
+            NCParameter.CLIENT_PORT: "33555",
+        })
+    
+
 class NC(Experience):
     NAME = "nc"
+    PARAMETER_CLASS = NCParameter
 
     SERVER_NC_LOG = "netcat_server"
     CLIENT_NC_LOG = "netcat_client"
     NC_BIN = "netcat"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(NC, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(NC, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         super(NC, self).classic_run()
     
-    def loadParam(self):
-        self.ddibs = self.experience_parameter.get(ExperienceParameter.DDIBS)
-        self.ddobs = self.experience_parameter.get(ExperienceParameter.DDOBS)
-        self.ddcount = self.experience_parameter.get(ExperienceParameter.DDCOUNT)
-        self.ncServerPort = self.experience_parameter.get(ExperienceParameter.NCSERVERPORT)
+    def load_parameters(self):
+        self.ddibs = self.experience_parameter.get(NCParameter.DD_IBS)
+        self.ddobs = self.experience_parameter.get(NCParameter.DD_OBS)
+        self.ddcount = self.experience_parameter.get(NCParameter.DD_COUNT)
+        self.ncServerPort = self.experience_parameter.get(NCParameter.SERVER_PORT)
         self.ncClientPort = []
         for k in sorted(self.experience_parameter.paramDic):
-            if k.startswith(ExperienceParameter.NCCLIENTPORT):
+            if k.startswith(NCParameter.CLIENT_PORT):
                 port = self.experience_parameter.paramDic[k]
                 self.ncClientPort.append(port)
         if len(self.ncClientPort) == 0:
-            d = self.experience_parameter.get(ExperienceParameter.NCCLIENTPORT)
+            d = self.experience_parameter.get(NCParameter.CLIENT_PORT)
             self.ncClientPort.append(d)
 
     def prepare(self):
diff --git a/experiences/ncpv.py b/experiences/ncpv.py
index 837bf45..8debfc2 100644
--- a/experiences/ncpv.py
+++ b/experiences/ncpv.py
@@ -1,4 +1,21 @@
-from core.experience import Experience, ExperienceParameter
+from .nc import NC, NCParameter, ExperienceParameter
+
+
+class NCPVParameter(NCParameter):
+    RATE_LIMIT= "pvRateLimit"
+    G        = "pvG" #patched version of pv
+    Z        = "pvZ"
+    CHANGE_PV   = "changePv"
+    CHANGE_PV_AT = "changePvAt"
+
+    def __init__(self, experience_parameter_filename):
+        super(NCPVParameter, self).__init__(experience_parameter_filename)
+        self.default_parameters.update({
+            NCPVParameter.RATE_LIMIT: "400k",
+            NCPVParameter.G: "10000",
+            NCPVParameter.Z: "10000",
+            NCPVParameter.CHANGE_PV: "no",
+        })
 
 
 class MpPvAt(object):
@@ -12,11 +29,12 @@ class MpPvAt(object):
                 ") will be " + self.cmd
 
 
-class NCPV(Experience):
+class NCPV(NC):
     """
     NC PV : NetCat and Pipe Viewer
     """
     NAME = "ncpv"
+    PARAMETER_CLASS = NCPVParameter
 
     SERVER_NC_LOG = "netcat_server"
     CLIENT_NC_LOG = "netcat_client"
@@ -24,9 +42,9 @@ class NCPV(Experience):
     PV_BIN = "/usr/local/bin/pv"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(NCPV, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(NCPV, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(NCPV, self).classic_run()
 
@@ -45,23 +63,11 @@ class NCPV(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
+        super(NCPV, self).load_parameters()
         self.pvg = self.experience_parameter.get(ExperienceParameter.PVG)
         self.pvz = self.experience_parameter.get(ExperienceParameter.PVZ)
         self.pvRateLimit = self.experience_parameter.get(ExperienceParameter.PVRATELIMIT)
-        self.ddibs = self.experience_parameter.get(ExperienceParameter.DDIBS)
-        self.ddobs = self.experience_parameter.get(ExperienceParameter.DDOBS)
-        self.ddcount = self.experience_parameter.get(ExperienceParameter.DDCOUNT)
-        self.ncServerPort = self.experience_parameter.get(ExperienceParameter.NCSERVERPORT)
-        self.pvRateLimit = self.experience_parameter.get(ExperienceParameter.PVRATELIMIT)
-        self.ncClientPort = []
-        for k in sorted(self.experience_parameter.paramDic):
-            if k.startswith(ExperienceParameter.NCCLIENTPORT):
-                port = self.experience_parameter.paramDic[k]
-                self.ncClientPort.append(port)
-        if len(self.ncClientPort) == 0:
-            d = self.experience_parameter.get(ExperienceParameter.NCCLIENTPORT)
-            self.ncClientPort.append(d)
         self.loadPvAt()
 
     def loadPvAt(self):
@@ -106,15 +112,11 @@ class NCPV(Experience):
 
     def prepare(self):
         super(NCPV, self).prepare()
-        self.topo.command_to(self.topo_config.client, "rm " + \
-                NCPV.CLIENT_NC_LOG )
-        self.topo.command_to(self.topo_config.server, "rm " + \
-                NCPV.SERVER_NC_LOG )
 
     def getNCServerCmd(self, id):
-        s = NCPV.NC_BIN + " -d  " + \
+        s = NC.NC_BIN + " -d  " + \
                 " -l " + self.ncServerPort  + \
-                " 1>/dev/null 2>" + NCPV.SERVER_NC_LOG + \
+                " 1>/dev/null 2>" + NC.SERVER_NC_LOG + \
                 "_" + str(id) + ".log &"
         print(s)
         return s
@@ -123,10 +125,10 @@ class NCPV(Experience):
         s = "dd if=/dev/urandom ibs=" + self.ddibs + \
                 " obs=" + self.ddobs + \
                 " count=" + self.ddcount + \
-                " | " + NCPV.PV_BIN + \
+                " | " + NC.PV_BIN + \
                 " -g " + self.pvg + " -z " + self.pvz + \
                 " -q --rate-limit " + self.pvRateLimit + \
-                " | " + NCPV.NC_BIN + " " + \
+                " | " + NC.NC_BIN + " " + \
                 "  -p " + self.ncClientPort[id] + " " + \
                 self.topo_config.getServerIP() + " " + \
                 self.ncServerPort + " " + \
@@ -134,13 +136,13 @@ class NCPV(Experience):
                 "_" + str(id) + ".log"
         print(s)
         return s
+
     def getPvPidCmd(self):
         s = "pgrep -n pv"
         return s
 
     def clean(self):
         super(NCPV, self).clean()
-        self.topo.command_to(self.topo_config.server, "killall netcat")
 
     def run(self):
         for i in range(0, len(self.ncClientPort)):
diff --git a/experiences/netperf.py b/experiences/netperf.py
index d596da0..68db96e 100644
--- a/experiences/netperf.py
+++ b/experiences/netperf.py
@@ -10,9 +10,9 @@ class Netperf(Experience):
     NETSERVER_BIN = "netserver"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(Netperf, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(Netperf, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(Netperf, self).classic_run()
 
@@ -31,7 +31,7 @@ class Netperf(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.testlen = self.experience_parameter.get(ExperienceParameter.NETPERFTESTLEN)
         self.testname = self.experience_parameter.get(ExperienceParameter.NETPERFTESTNAME)
         self.reqres_size = self.experience_parameter.get(ExperienceParameter.NETPERFREQRESSIZE)
diff --git a/experiences/none.py b/experiences/none.py
index eb661e0..5084548 100644
--- a/experiences/none.py
+++ b/experiences/none.py
@@ -3,8 +3,8 @@ from core.experience import Experience, ExperienceParameter
 class NoneExperience(Experience):
     NAME = "none"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(NoneExperience, self).__init__(experience_parameter, topo, topo_config)
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(NoneExperience, self).__init__(experience_parameter_filename, topo, topo_config)
         super(NoneExperience, self).classic_run()
 
     def prepare(self):
diff --git a/experiences/ping.py b/experiences/ping.py
index b22b41a..be2503d 100644
--- a/experiences/ping.py
+++ b/experiences/ping.py
@@ -5,8 +5,8 @@ class Ping(Experience):
 
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(Ping, self).__init__(experience_parameter, topo, topo_config)
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(Ping, self).__init__(experience_parameter_filename, topo, topo_config)
         super(Ping, self).classic_run()
 
     def prepare(self):
diff --git a/experiences/quic.py b/experiences/quic.py
index 7426ca9..2a2f438 100644
--- a/experiences/quic.py
+++ b/experiences/quic.py
@@ -1,9 +1,9 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import RandomFileExperience, RandomFileParameter, ExperienceParameter
 from topos.multi_interface_cong import MultiInterfaceCongConfig
 import os
 
 
-class QUIC(Experience):
+class QUIC(RandomFileExperience):
     NAME = "quic"
 
     GO_BIN = "/usr/local/go/bin/go"
@@ -15,11 +15,9 @@ class QUIC(Experience):
     CERTPATH = "~/go/src/github.com/lucas-clemente/quic-go/example/"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(QUIC, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(QUIC, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        # Just rely on RandomFileExperience
+        super(QUIC, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client, "rm " + \
@@ -36,9 +34,8 @@ class QUIC(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPSFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPSRANDOMSIZE)
+    def load_parameters(self):
+        super(QUIC, self).load_parameters()
         self.multipath = self.experience_parameter.get(ExperienceParameter.QUICMULTIPATH)
 
     def prepare(self):
@@ -47,10 +44,6 @@ class QUIC(Experience):
                 QUIC.CLIENT_LOG )
         self.topo.command_to(self.topo_config.server, "rm " + \
                 QUIC.SERVER_LOG )
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client,
-                "dd if=/dev/urandom of=random bs=1K count=" + \
-                self.random_size)
 
     def getQUICServerCmd(self):
         s = QUIC.GO_BIN + " run " + QUIC.SERVER_GO_FILE
@@ -69,7 +62,7 @@ class QUIC(Experience):
 
     def getCongServerCmd(self, congID):
         s = "python " + os.path.dirname(os.path.abspath(__file__))  + \
-                "/utils/https_server.py &> https_server" + str(congID) + ".log &"
+                "/../utils/https_server.py &> https_server" + str(congID) + ".log &"
         print(s)
         return s
 
@@ -81,8 +74,6 @@ class QUIC(Experience):
 
     def clean(self):
         super(QUIC, self).clean()
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client, "rm random*")
 
     def run(self):
         cmd = self.getQUICServerCmd()
diff --git a/experiences/quic_siri.py b/experiences/quic_siri.py
index 1f7ecff..9d7160b 100644
--- a/experiences/quic_siri.py
+++ b/experiences/quic_siri.py
@@ -12,9 +12,9 @@ class QUICSiri(Experience):
     SERVER_GO_FILE = "~/go/src/github.com/lucas-clemente/quic-go/example/siri/siri.go"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(QUICSiri, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(QUICSiri, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(QUICSiri, self).classic_run()
 
@@ -33,7 +33,7 @@ class QUICSiri(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.run_time = self.experience_parameter.get(ExperienceParameter.QUICSIRIRUNTIME)
         self.multipath = self.experience_parameter.get(ExperienceParameter.QUICMULTIPATH)
 
diff --git a/experiences/send_file.py b/experiences/send_file.py
index aa381cb..d1e6298 100644
--- a/experiences/send_file.py
+++ b/experiences/send_file.py
@@ -1,7 +1,7 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import RandomFileExperience, RandomFileParameter, ExperienceParameter
 import os
 
-class SendFile(Experience):
+class SendFile(RandomFileExperience):
     NAME = "sendfile"
 
     SERVER_LOG = "sendfile_server.log"
@@ -9,11 +9,9 @@ class SendFile(Experience):
     WGET_BIN = "./client"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(SendFile, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(SendFile, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        # Just rely on RandomFileExperience
+        super(SendFile, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client, "rm " + \
@@ -30,9 +28,8 @@ class SendFile(Experience):
         print(s)
         return s
 
-    def loadParam(self):
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPSFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPSRANDOMSIZE)
+    def load_parameters(self):
+        super(SendFile, self).load_parameters()
 
     def prepare(self):
         super(SendFile, self).prepare()
@@ -40,10 +37,6 @@ class SendFile(Experience):
                 SendFile.CLIENT_LOG )
         self.topo.command_to(self.topo_config.server, "rm " + \
                 SendFile.SERVER_LOG )
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client,
-                "dd if=/dev/urandom of=random bs=1K count=" + \
-                self.random_size)
 
     def getSendFileServerCmd(self):
         s = "./server &>" + SendFile.SERVER_LOG + "&"
@@ -57,8 +50,6 @@ class SendFile(Experience):
 
     def clean(self):
         super(SendFile, self).clean()
-        if self.file  == "random":
-            self.topo.command_to(self.topo_config.client, "rm random*")
 
     def run(self):
         cmd = self.getSendFileServerCmd()
diff --git a/experiences/siri.py b/experiences/siri.py
index e9000e8..10b587a 100644
--- a/experiences/siri.py
+++ b/experiences/siri.py
@@ -10,9 +10,9 @@ class Siri(Experience):
     JAVA_BIN = "java"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(Siri, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(Siri, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(Siri, self).classic_run()
 
@@ -31,7 +31,7 @@ class Siri(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.run_time = self.experience_parameter.get(ExperienceParameter.SIRIRUNTIME)
         self.query_size = self.experience_parameter.get(ExperienceParameter.SIRIQUERYSIZE)
         self.response_size = self.experience_parameter.get(ExperienceParameter.SIRIRESPONSESIZE)
diff --git a/experiences/siri_http.py b/experiences/siri_http.py
index 8b637dd..40c4845 100644
--- a/experiences/siri_http.py
+++ b/experiences/siri_http.py
@@ -1,7 +1,7 @@
-from core.experience import Experience, ExperienceParameter
+from core.experience import ExperienceParameter, RandomFileExperience, RandomFileParameter
 import os
 
-class SiriHTTP(Experience):
+class SiriHTTP(RandomFileExperience):
     NAME = "sirihttp"
 
     HTTP_SERVER_LOG = "http_server.log"
@@ -13,11 +13,9 @@ class SiriHTTP(Experience):
     JAVA_BIN = "java"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(SiriHTTP, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
-        self.ping()
-        super(SiriHTTP, self).classic_run()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        # Just rely on RandomFileExperiment
+        super(SiriHTTP, self).__init__(experience_parameter_filename, topo, topo_config)
 
     def ping(self):
         self.topo.command_to(self.topo_config.client, "rm " + \
@@ -34,7 +32,9 @@ class SiriHTTP(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
+        # Start collecting parameters of RandomFileExperiment
+        super(SiriHTTP, self).load_parameters()
         self.run_time = self.experience_parameter.get(ExperienceParameter.SIRIRUNTIME)
         self.query_size = self.experience_parameter.get(ExperienceParameter.SIRIQUERYSIZE)
         self.response_size = self.experience_parameter.get(ExperienceParameter.SIRIRESPONSESIZE)
@@ -45,8 +45,6 @@ class SiriHTTP(Experience):
         self.buffer_size = self.experience_parameter.get(ExperienceParameter.SIRIBUFFERSIZE)
         self.burst_size = self.experience_parameter.get(ExperienceParameter.SIRIBURSTSIZE)
         self.interval_burst_time_ms = self.experience_parameter.get(ExperienceParameter.SIRIINTERVALBURSTTIMEMS)
-        self.file = self.experience_parameter.get(ExperienceParameter.HTTPFILE)
-        self.random_size = self.experience_parameter.get(ExperienceParameter.HTTPRANDOMSIZE)
 
     def prepare(self):
         super(SiriHTTP, self).prepare()
diff --git a/experiences/siri_msg.py b/experiences/siri_msg.py
index 9ba126c..b3682de 100644
--- a/experiences/siri_msg.py
+++ b/experiences/siri_msg.py
@@ -13,9 +13,9 @@ class SiriMsg(Experience):
     JAVA_BIN = "java"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(SiriMsg, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(SiriMsg, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(SiriMsg, self).classic_run()
 
@@ -34,7 +34,7 @@ class SiriMsg(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.run_time = self.experience_parameter.get(ExperienceParameter.SIRIRUNTIME)
         self.query_size = self.experience_parameter.get(ExperienceParameter.SIRIQUERYSIZE)
         self.response_size = self.experience_parameter.get(ExperienceParameter.SIRIRESPONSESIZE)
diff --git a/experiences/vlc.py b/experiences/vlc.py
index de3a552..396dd3a 100644
--- a/experiences/vlc.py
+++ b/experiences/vlc.py
@@ -9,9 +9,9 @@ class VLC(Experience):
     VLC_BIN = "/home/mininet/vlc/vlc"
     PING_OUTPUT = "ping.log"
 
-    def __init__(self, experience_parameter, topo, topo_config):
-        super(VLC, self).__init__(experience_parameter, topo, topo_config)
-        self.loadParam()
+    def __init__(self, experience_parameter_filename, topo, topo_config):
+        super(VLC, self).__init__(experience_parameter_filename, topo, topo_config)
+        self.load_parameters()
         self.ping()
         super(VLC, self).classic_run()
 
@@ -30,7 +30,7 @@ class VLC(Experience):
         print(s)
         return s
 
-    def loadParam(self):
+    def load_parameters(self):
         self.file = self.experience_parameter.get(ExperienceParameter.VLCFILE)
         self.time = self.experience_parameter.get(ExperienceParameter.VLCTIME)
 
diff --git a/runner.py b/runner.py
index cc97a5e..4ea3f01 100644
--- a/runner.py
+++ b/runner.py
@@ -20,13 +20,12 @@ class Runner(object):
     All the operations are done when calling the constructor.
     """
     def __init__(self, builder_type, topo_parameter_file, experience_parameter_file):
-        self.experience_parameter = ExperienceParameter(experience_parameter_file)
         self.topo_parameter = TopoParameter(topo_parameter_file)
         self.set_builder(builder_type)
         self.set_topo()
         self.set_topo_config()
         self.start_topo()
-        self.run_experience()
+        self.run_experience(experience_parameter_file)
         self.stop_topo()
 
     def set_builder(self, builder_type):
@@ -69,13 +68,15 @@ class Runner(object):
         self.topo.start_network()
         self.topo_config.configure_network()
 
-    def run_experience(self):
+    def run_experience(self, experience_parameter_file):
         """
         Match the name of the experiement and launch it
         """
-        xp = self.experience_parameter.get(ExperienceParameter.XPTYPE)
+        # Well, we need to load twice the experience parameters, is it really annoying?
+        xp = ExperienceParameter(experience_parameter_file).get(ExperienceParameter.XPTYPE)
+        print(EXPERIENCES)
         if xp in EXPERIENCES:
-            EXPERIENCES[xp](self.experience_parameter, self.topo, self.topo_config)
+            EXPERIENCES[xp](experience_parameter_file, self.topo, self.topo_config)
         else:
             raise Exception("Unknown experience {}".format(xp))
 
@@ -94,7 +95,7 @@ if __name__ == '__main__':
 
     parser.add_argument("--topo_param_file", "-t", required=True,
         help="path to the topo parameter file")
-    parser.add_argument("--experience_param_file", "-x", required=True,
+    parser.add_argument("--experience_param_file", "-x",
         help="path to the experience parameter file")
 
     args = parser.parse_args()
diff --git a/utils/http_server.py b/utils/http_server.py
index aae6a44..e37855e 100644
--- a/utils/http_server.py
+++ b/utils/http_server.py
@@ -9,27 +9,19 @@ SimpleHTTPServer.py - simple HTTP server supporting SSL.
 usage: python SimpleHTTPServer.py
 '''
 
-import socket, os
-try:
-    # Python 2
-    from SocketServer import BaseServer
-    from BaseHTTPServer import HTTPServer
-    from SimpleHTTPServer import SimpleHTTPRequestHandler
-except ImportError:
+import sys
+if sys.version_info[0] == 3:
     # Python 3
-    from socketserver import BaseServer
-    from http.server import HTTPServer, SimpleHTTPRequestHandler
-
-from OpenSSL import SSL
-
-def test(HandlerClass=SimpleHTTPRequestHandler,
-         ServerClass=HTTPServer):
-    server_address = ('', 80)  # (address, port)
-    httpd = ServerClass(server_address, HandlerClass)
-    sa = httpd.socket.getsockname()
-    print("Serving HTTP on", sa[0], "port", sa[1], "...")
+    import http.server
+    server_address = ('', 80)
+    httpd = http.server.HTTPServer(server_address, http.server.SimpleHTTPRequestHandler)
+    print("Serving HTTP on 0.0.0.0 port 80...")
     httpd.serve_forever()
+else:
+    # Python2
+    import BaseHTTPServer, SimpleHTTPServer
+    import os
 
-
-if __name__ == '__main__':
-    test()
+    httpd = BaseHTTPServer.HTTPServer(('', 443), SimpleHTTPServer.SimpleHTTPRequestHandler)
+    print("Serving HTTP on 0.0.0.0 port 80...")
+    httpd.serve_forever()
\ No newline at end of file