diff --git a/samples/MultipleReadPropertyHammer.py b/samples/MultipleReadPropertyHammer.py
new file mode 100755
index 0000000..7bfa4e8
--- /dev/null
+++ b/samples/MultipleReadPropertyHammer.py
@@ -0,0 +1,229 @@
+#!/usr/bin/env python
+
+"""
+Mutliple Read Property Hammer
+
+This application blasts a list of ReadPropertyRequest messages with no
+regard to the number of simultaneous requests to the same device.  The
+ReadPointListApplication is constructed like the BIPSimpleApplication but
+without the ApplicationIOController interface and sieve.
+"""
+
+import os
+from time import time as _time
+from copy import copy as _copy
+
+from random import shuffle
+
+from bacpypes.debugging import bacpypes_debugging, ModuleLogger
+from bacpypes.consolelogging import ConfigArgumentParser
+
+from bacpypes.core import run
+from bacpypes.comm import bind
+from bacpypes.task import RecurringTask
+
+from bacpypes.pdu import Address
+
+from bacpypes.app import Application
+from bacpypes.appservice import StateMachineAccessPoint, ApplicationServiceAccessPoint
+from bacpypes.netservice import NetworkServiceAccessPoint, NetworkServiceElement
+from bacpypes.bvllservice import BIPSimple, AnnexJCodec, UDPMultiplexer
+
+from bacpypes.apdu import ReadPropertyRequest
+
+from bacpypes.service.device import LocalDeviceObject, WhoIsIAmServices
+from bacpypes.service.object import ReadWritePropertyServices
+
+
+# some debugging
+_debug = 0
+_log = ModuleLogger(globals())
+
+# globals
+args = None
+this_application = None
+
+# settings
+INTERVAL = float(os.getenv('INTERVAL', 10.0))
+
+# point list, set according to your device
+point_list = [
+    ('10.0.1.21:47809', 'analogValue', 1, 'presentValue'),
+    ('10.0.1.21:47809', 'analogValue', 2, 'presentValue'),
+    ('10.0.1.21:47809', 'analogValue', 3, 'presentValue'),
+    ('10.0.1.21:47809', 'analogValue', 4, 'presentValue'),
+    ('10.0.1.21:47809', 'analogValue', 5, 'presentValue'),
+    ]
+
+#
+#   ReadPointListApplication
+#
+
+@bacpypes_debugging
+class ReadPointListApplication(Application, WhoIsIAmServices, ReadWritePropertyServices, RecurringTask):
+
+    def __init__(self, localDevice, localAddress, deviceInfoCache=None, aseID=None):
+        if _debug: ReadPointListApplication._debug("__init__ %r %r deviceInfoCache=%r aseID=%r", localDevice, localAddress, deviceInfoCache, aseID)
+        global args
+
+        Application.__init__(self, localDevice, deviceInfoCache, aseID=aseID)
+        RecurringTask.__init__(self, args.interval * 1000)
+
+        # local address might be useful for subclasses
+        if isinstance(localAddress, Address):
+            self.localAddress = localAddress
+        else:
+            self.localAddress = Address(localAddress)
+
+        # include a application decoder
+        self.asap = ApplicationServiceAccessPoint()
+
+        # pass the device object to the state machine access point so it
+        # can know if it should support segmentation
+        self.smap = StateMachineAccessPoint(localDevice)
+
+        # the segmentation state machines need access to the same device
+        # information cache as the application
+        self.smap.deviceInfoCache = self.deviceInfoCache
+
+        # a network service access point will be needed
+        self.nsap = NetworkServiceAccessPoint()
+
+        # give the NSAP a generic network layer service element
+        self.nse = NetworkServiceElement()
+        bind(self.nse, self.nsap)
+
+        # bind the top layers
+        bind(self, self.asap, self.smap, self.nsap)
+
+        # create a generic BIP stack, bound to the Annex J server
+        # on the UDP multiplexer
+        self.bip = BIPSimple()
+        self.annexj = AnnexJCodec()
+        self.mux = UDPMultiplexer(self.localAddress)
+
+        # bind the bottom layers
+        bind(self.bip, self.annexj, self.mux.annexJ)
+
+        # bind the BIP stack to the network, no network number
+        self.nsap.bind(self.bip)
+
+        # install the task
+        self.install_task()
+
+        # timer
+        self.start_time = None
+
+        # pending requests
+        self.pending_requests = {}
+
+    def process_task(self):
+        if _debug: ReadPointListApplication._debug("process_task")
+        global point_list
+
+        # we might not have finished from the last round
+        if self.pending_requests:
+            if _debug: ReadPointListApplication._debug("    - %d pending", len(self.pending_requests))
+            return
+
+        # start the clock
+        self.start_time = _time()
+
+        # make a copy of the point list and shuffle it
+        point_list_copy = _copy(point_list)
+        shuffle(point_list_copy)
+
+        # loop through the points
+        for addr, obj_type, obj_inst, prop_id in point_list_copy:
+            # build a request
+            request = ReadPropertyRequest(
+                objectIdentifier=(obj_type, obj_inst),
+                propertyIdentifier=prop_id,
+                )
+            request.pduDestination = Address(addr)
+            if _debug: ReadPointListApplication._debug("    - request: %r", request)
+
+            # send the request
+            self.request(request)
+
+            # get the destination address from the pdu
+            request_key = request.pduDestination, request.apduInvokeID
+            if _debug: ReadPointListApplication._debug("    - request_key: %r", request_key)
+
+            # make sure it's unused
+            if request_key in self.pending_requests:
+                raise RuntimeError("request key already used: %r" % (request_key,))
+                
+            # add this to pending requests
+            self.pending_requests[request_key] = request
+
+    def confirmation(self, apdu):
+        if _debug: ReadPointListApplication._debug("confirmation %r", apdu)
+
+        # get the source address from the pdu
+        request_key = apdu.pduSource, apdu.apduInvokeID
+        if _debug: ReadPointListApplication._debug("    - request_key: %r", request_key)
+
+        # make sure it's unused
+        if request_key not in self.pending_requests:
+            raise RuntimeError("request missing: %r" % (request_key,))
+
+        # this is no longer pending
+        del self.pending_requests[request_key]
+
+        # we could be done with this interval
+        if not self.pending_requests:
+            elapsed_time = _time() - self.start_time
+            if _debug: ReadPointListApplication._debug("    - completed interval, %r seconds", elapsed_time)
+
+
+#
+#   __main__
+#
+
+def main():
+    global args, this_application
+
+    # parse the command line arguments
+    parser = ConfigArgumentParser(description=__doc__)
+
+    # add an option to override the interval time
+    parser.add_argument('--interval', type=float,
+        help="amount of time between intervals",
+        default=INTERVAL,
+        )
+
+    # parse the command line arguments
+    args = parser.parse_args()
+
+    if _debug: _log.debug("initialization")
+    if _debug: _log.debug("    - args: %r", args)
+
+    # make a device object
+    this_device = LocalDeviceObject(
+        objectName=args.ini.objectname,
+        objectIdentifier=int(args.ini.objectidentifier),
+        maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted),
+        segmentationSupported=args.ini.segmentationsupported,
+        vendorIdentifier=int(args.ini.vendoridentifier),
+        )
+
+    # make a simple application
+    this_application = ReadPointListApplication(this_device, args.ini.address)
+
+    # get the services supported
+    services_supported = this_application.get_services_supported()
+    if _debug: _log.debug("    - services_supported: %r", services_supported)
+
+    # let the device object know
+    this_device.protocolServicesSupported = services_supported.value
+
+    _log.debug("running")
+
+    run()
+
+    _log.debug("fini")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/samples/RandomAnalogValueSleep.py b/samples/RandomAnalogValueSleep.py
new file mode 100644
index 0000000..ea71cdb
--- /dev/null
+++ b/samples/RandomAnalogValueSleep.py
@@ -0,0 +1,148 @@
+#!/usr/bin/env python
+
+"""
+Random Value Property with Sleep
+
+This application is a server of analog value objects that return a random
+number when the present value is read.  This version has an additional
+'sleep' time that slows down its performance.
+"""
+
+import os
+import random
+import time
+
+from bacpypes.debugging import bacpypes_debugging, ModuleLogger
+from bacpypes.consolelogging import ConfigArgumentParser
+
+from bacpypes.core import run
+
+from bacpypes.primitivedata import Real
+from bacpypes.object import AnalogValueObject, Property, register_object_type
+from bacpypes.errors import ExecutionError
+
+from bacpypes.app import BIPSimpleApplication
+from bacpypes.service.device import LocalDeviceObject
+
+# some debugging
+_debug = 0
+_log = ModuleLogger(globals())
+
+# settings
+SLEEP_TIME = float(os.getenv('SLEEP_TIME', 0.1))
+RANDOM_OBJECT_COUNT = int(os.getenv('RANDOM_OBJECT_COUNT', 10))
+
+# globals
+args = None
+
+#
+#   RandomValueProperty
+#
+
+class RandomValueProperty(Property):
+
+    def __init__(self, identifier):
+        if _debug: RandomValueProperty._debug("__init__ %r", identifier)
+        Property.__init__(self, identifier, Real, default=0.0, optional=True, mutable=False)
+
+    def ReadProperty(self, obj, arrayIndex=None):
+        if _debug: RandomValueProperty._debug("ReadProperty %r arrayIndex=%r", obj, arrayIndex)
+        global args
+
+        # access an array
+        if arrayIndex is not None:
+            raise ExecutionError(errorClass='property', errorCode='propertyIsNotAnArray')
+
+        # sleep a little
+        time.sleep(args.sleep)
+
+        # return a random value
+        value = random.random() * 100.0
+        if _debug: RandomValueProperty._debug("    - value: %r", value)
+
+        return value
+
+    def WriteProperty(self, obj, value, arrayIndex=None, priority=None, direct=False):
+        if _debug: RandomValueProperty._debug("WriteProperty %r %r arrayIndex=%r priority=%r direct=%r", obj, value, arrayIndex, priority, direct)
+        raise ExecutionError(errorClass='property', errorCode='writeAccessDenied')
+
+bacpypes_debugging(RandomValueProperty)
+
+#
+#   Random Value Object Type
+#
+
+class RandomAnalogValueObject(AnalogValueObject):
+
+    properties = [
+        RandomValueProperty('presentValue'),
+        ]
+
+    def __init__(self, **kwargs):
+        if _debug: RandomAnalogValueObject._debug("__init__ %r", kwargs)
+        AnalogValueObject.__init__(self, **kwargs)
+
+bacpypes_debugging(RandomAnalogValueObject)
+register_object_type(RandomAnalogValueObject)
+
+#
+#   __main__
+#
+
+def main():
+    global args
+
+    # parse the command line arguments
+    parser = ConfigArgumentParser(description=__doc__)
+
+    # add an option to override the sleep time
+    parser.add_argument('--sleep', type=float,
+        help="sleep before returning the value",
+        default=SLEEP_TIME,
+        )
+
+    # parse the command line arguments
+    args = parser.parse_args()
+
+    if _debug: _log.debug("initialization")
+    if _debug: _log.debug("    - args: %r", args)
+
+    # make a device object
+    this_device = LocalDeviceObject(
+        objectName=args.ini.objectname,
+        objectIdentifier=('device', int(args.ini.objectidentifier)),
+        maxApduLengthAccepted=int(args.ini.maxapdulengthaccepted),
+        segmentationSupported=args.ini.segmentationsupported,
+        vendorIdentifier=int(args.ini.vendoridentifier),
+        )
+
+    # make a sample application
+    this_application = BIPSimpleApplication(this_device, args.ini.address)
+
+    # get the services supported
+    services_supported = this_application.get_services_supported()
+    if _debug: _log.debug("    - services_supported: %r", services_supported)
+
+    # let the device object know
+    this_device.protocolServicesSupported = services_supported.value
+
+    # make some random input objects
+    for i in range(1, RANDOM_OBJECT_COUNT+1):
+        ravo = RandomAnalogValueObject(
+            objectIdentifier=('analogValue', i),
+            objectName='Random-%d' % (i,),
+            )
+        _log.debug("    - ravo: %r", ravo)
+        this_application.add_object(ravo)
+
+    # make sure they are all there
+    _log.debug("    - object list: %r", this_device.objectList)
+
+    _log.debug("running")
+
+    run()
+
+    _log.debug("fini")
+
+if __name__ == "__main__":
+    main()