Applied
On Wed, 2020-05-13 at 19:20 -0700, Inga Stotland wrote:
> Use correct packing of multi-byte values in message payload bytearray.
> For example, a 2-byte opcode 0x8204 is packed as 0x82 0x04, i.e. in
> natural order.
>
> Add transaction ID parameter to "set" commands of generic On/Off
> model. Server will ignore the identical commands with the same
> transaction ID, source and destination during a timeout period
> of 6 seconds.
> ---
> test/test-mesh | 94 ++++++++++++++++++++++++++++++++++++--------------
> 1 file changed, 69 insertions(+), 25 deletions(-)
>
> diff --git a/test/test-mesh b/test/test-mesh
> index 66055e2de..38f0c0a74 100755
> --- a/test/test-mesh
> +++ b/test/test-mesh
> @@ -146,6 +146,8 @@ APP_VERSION_ID = 0x0001
>
> VENDOR_ID_NONE = 0xffff
>
> +TRANSACTION_TIMEOUT = 6
> +
> app = None
> bus = None
> mainloop = None
> @@ -330,7 +332,7 @@ def print_state(state):
> print('ON')
> else:
> print('UNKNOWN')
> -class PubTimer():
> +class ModTimer():
> def __init__(self):
> self.seconds = None
> self.func = None
> @@ -473,18 +475,18 @@ class Element(dbus.service.Object):
>
> @dbus.service.method(MESH_ELEMENT_IFACE,
> in_signature="qqvay", out_signature="")
> - def MessageReceived(self, source, key, destination, data):
> + def MessageReceived(self, source, key, dest, data):
> print(('Message Received on Element %02x') % self.index, end='')
> print(', src=', format(source, '04x'), end='')
>
> - if isinstance(destination, int):
> - print(', dst=%04x' % destination)
> - elif isinstance(destination, dbus.Array):
> - dst_str = array_to_string(destination)
> + if isinstance(dest, int):
> + print(', dst=%04x' % dest)
> + elif isinstance(dest, dbus.Array):
> + dst_str = array_to_string(dest)
> print(', dst=' + dst_str)
>
> for model in self.models:
> - model.process_message(source, key, data)
> + model.process_message(source, dest, key, data)
>
> @dbus.service.method(MESH_ELEMENT_IFACE,
> in_signature="qa{sv}", out_signature="")
> @@ -528,7 +530,7 @@ class Model():
> def get_vendor(self):
> return self.vendor
>
> - def process_message(self, source, key, data):
> + def process_message(self, source, dest, key, data):
> return
>
> def set_publication(self, period):
> @@ -576,6 +578,9 @@ class Model():
> class OnOffServer(Model):
> def __init__(self, model_id):
> Model.__init__(self, model_id)
> + self.tid = None
> + self.last_src = 0x0000
> + self.last_dst = 0x0000
> self.cmd_ops = { 0x8201, # get
> 0x8202, # set
> 0x8203, # set unacknowledged
> @@ -584,48 +589,74 @@ class OnOffServer(Model):
> print("OnOff Server ")
> self.state = 0
> print_state(self.state)
> - self.timer = PubTimer()
> + self.pub_timer = ModTimer()
> + self.t_timer = ModTimer()
>
> - def process_message(self, source, key, data):
> + def process_message(self, source, dest, key, data):
> datalen = len(data)
>
> - if datalen != 2 and datalen != 3:
> + if datalen != 2 and datalen != 4:
> # The opcode is not recognized by this model
> return
>
> if datalen == 2:
> - op_tuple=struct.unpack('<H',bytes(data))
> + op_tuple=struct.unpack('>H',bytes(data))
> opcode = op_tuple[0]
> +
> if opcode != 0x8201:
> # The opcode is not recognized by this model
> return
> print('Get state')
> - elif datalen == 3:
> - opcode,self.state=struct.unpack('<HB',bytes(data))
> + elif datalen == 4:
> + opcode,self.state, tid = struct.unpack('>HBB',
> + bytes(data))
> +
> if opcode != 0x8202 and opcode != 0x8203:
> # The opcode is not recognized by this model
> return
> print_state(self.state)
>
> - rsp_data = struct.pack('<HB', 0x8204, self.state)
> + if (self.tid != None and self.tid == tid and
> + self.last_src == source and
> + self.last_dst == dest):
> + # Ignore duplicate transaction
> + return
> +
> + self.t_timer.cancel()
> + self.tid = tid
> + self.last_src = source
> + self.last_dst = dest
> + self.t_timer.start(TRANSACTION_TIMEOUT, self.t_track)
> +
> + # Unacknowledged "set"
> + if opcode == 0x8203:
> + return
> +
> + rsp_data = struct.pack('>HB', 0x8204, self.state)
> self.send_message(source, key, rsp_data)
>
> + def t_track(self):
> + self.t_timer.cancel()
> + self.tid = None
> + self.last_src = 0x0000
> + self.last_dst = 0x0000
> +
> def set_publication(self, period):
>
> self.pub_period = period
> if period == 0:
> - self.timer.cancel()
> + self.pub_timer.cancel()
> return
>
> # We do not handle ms in this example
> if period < 1000:
> return
>
> - self.timer.start(period/1000, self.publish)
> + self.pub_timer.start(period/1000, self.publish)
>
> def publish(self):
> print('Publish')
> - data = struct.pack('<HB', 0x8204, self.state)
> + data = struct.pack('>HB', 0x8204, self.state)
> self.send_publication(data)
>
> ########################
> @@ -634,6 +665,8 @@ class OnOffServer(Model):
> class OnOffClient(Model):
> def __init__(self, model_id):
> Model.__init__(self, model_id)
> + self.tid = 0
> + self.data = None
> self.cmd_ops = { 0x8201, # get
> 0x8202, # set
> 0x8203, # set unacknowledged
> @@ -646,16 +679,23 @@ class OnOffClient(Model):
>
> def get_state(self, dest, key):
> opcode = 0x8201
> - data = struct.pack('<H', opcode)
> - self._send_message(dest, key, data)
> + self.data = struct.pack('>H', opcode)
> + self._send_message(dest, key, self.data)
>
> def set_state(self, dest, key, state):
> opcode = 0x8202
> print('Set state:', state)
> - data = struct.pack('<HB', opcode, state)
> - self._send_message(dest, key, data)
> + self.data = struct.pack('>HBB', opcode, state, self.tid)
> + self.tid = (self.tid + 1) % 255
> + self._send_message(dest, key, self.data)
> +
> + def repeat(self, dest, key):
> + if self.data != None:
> + self._send_message(dest, key, self.data)
> + else:
> + print('No previous command stored')
>
> - def process_message(self, source, key, data):
> + def process_message(self, source, dest, key, data):
> print('OnOffClient process message len = ', end = '')
> datalen = len(data)
> print(datalen)
> @@ -664,7 +704,7 @@ class OnOffClient(Model):
> # The opcode is not recognized by this model
> return
>
> - opcode, state = struct.unpack('<HB',bytes(data))
> + opcode, state = struct.unpack('>HB',bytes(data))
>
> if opcode != 0x8204 :
> # The opcode is not recognized by this model
> @@ -919,12 +959,14 @@ class ClientMenu(Menu):
> self.__cmd_set_state_off),
> 'on': MenuItem(' - set state ON',
> self.__cmd_set_state_on),
> + 'repeat': MenuItem(' - repeat last command',
> + self.__cmd_repeat_transaction),
> 'back': MenuItem(' - back to main menu',
> self.__cmd_main_menu),
> 'quit': MenuItem(' - exit the test', app_exit)
> }
>
> - Menu.__init__(self, 'On/Off Clien Menu', menu_items)
> + Menu.__init__(self, 'On/Off Client Menu', menu_items)
>
> def __cmd_main_menu(self):
> switch_menu(MAIN_MENU)
> @@ -938,6 +980,8 @@ class ClientMenu(Menu):
> def __cmd_set_state_on(self):
> app.elements[1].models[0].set_state(dst_addr, app_idx, 1)
>
> + def __cmd_repeat_transaction(self):
> + app.elements[1].models[0].repeat(dst_addr, app_idx)
>
> def set_value(str_value, min, max):
>
