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Improved timeout calculation and handling.

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Mark Qvist 2021-08-28 20:01:01 +02:00
parent 6d441dac02
commit 2678aeb6a1
5 changed files with 112 additions and 41 deletions
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19
RNS/Packet.py
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@ -71,19 +71,18 @@ class Packet:
# With an MTU of 500, the maximum of data we can
# send in a single encrypted packet is given by
# the below calculation; 383 bytes.
ENCRYPTED_MDU = math.floor((RNS.Reticulum.MDU-RNS.Identity.AES_HMAC_OVERHEAD-RNS.Identity.KEYSIZE//16)/RNS.Identity.AES128_BLOCKSIZE)*RNS.Identity.AES128_BLOCKSIZE - 1
ENCRYPTED_MDU = math.floor((RNS.Reticulum.MDU-RNS.Identity.AES_HMAC_OVERHEAD-RNS.Identity.KEYSIZE//16)/RNS.Identity.AES128_BLOCKSIZE)*RNS.Identity.AES128_BLOCKSIZE - 1
"""
The maximum size of the payload data in a single encrypted packet
"""
PLAIN_MDU = MDU
PLAIN_MDU = MDU
"""
The maximum size of the payload data in a single unencrypted packet
"""
# TODO: This should be calculated
# more intelligently
# Default packet timeout
TIMEOUT = 60
# This value is set at a reasonable
# level for a 1 Kb/s channel.
TIMEOUT_PER_HOP = 5
def __init__(self, destination, data, packet_type = DATA, context = NONE, transport_type = RNS.Transport.BROADCAST, header_type = HEADER_1, transport_id = None, attached_interface = None, create_receipt = True):
if destination != None:
@ -329,13 +328,18 @@ class PacketReceipt:
self.truncated_hash = packet.getTruncatedHash()
self.sent = True
self.sent_at = time.time()
self.timeout = Packet.TIMEOUT
self.proved = False
self.status = PacketReceipt.SENT
self.destination = packet.destination
self.callbacks = PacketReceiptCallbacks()
self.concluded_at = None
if packet.destination.type == RNS.Destination.LINK:
self.timeout = packet.destination.rtt * packet.destination.traffic_timeout_factor
else:
self.timeout = Packet.TIMEOUT_PER_HOP * RNS.Transport.hops_to(self.destination.hash)
def get_status(self):
"""
:returns: The status of the associated :ref:`RNS.Packet<api-packet>` instance. Can be one of ``RNS.PacketReceipt.SENT``, ``RNS.PacketReceipt.DELIVERED``, ``RNS.PacketReceipt.FAILED`` or ``RNS.PacketReceipt.CULLED``.
@ -448,7 +452,6 @@ class PacketReceipt:
thread = threading.Thread(target=self.callbacks.timeout, args=(self,))
thread.setDaemon(True)
thread.start()
#self.callbacks.timeout(self)
def set_timeout(self, timeout):