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Added continous resource timeout adjustment. Fixes missing response timeout check.

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This commit is contained in:
Mark Qvist 2021-09-03 21:08:20 +02:00
parent 42a3d23e99
commit 07cf180ea8
2 changed files with 36 additions and 19 deletions
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22
RNS/Link.py
View File

@ -292,7 +292,7 @@ class Link:
packed_request = umsgpack.packb(unpacked_request)
if timeout == None:
timeout = self.rtt * self.traffic_timeout_factor
timeout = self.rtt * self.traffic_timeout_factor + RNS.Resource.RESPONSE_MAX_GRACE_TIME
if len(packed_request) <= Link.MDU:
request_packet = RNS.Packet(self, packed_request, RNS.Packet.DATA, context = RNS.Packet.REQUEST)
@ -867,7 +867,8 @@ class RequestReceipt():
FAILED = 0x00
SENT = 0x01
DELIVERED = 0x02
READY = 0x03
RECEIVING = 0x03
READY = 0x04
def __init__(self, link, packet_receipt = None, resource = None, response_callback = None, failed_callback = None, progress_callback = None, timeout = None):
self.packet_receipt = packet_receipt
@ -914,6 +915,9 @@ class RequestReceipt():
self.started_at = time.time()
self.status = RequestReceipt.DELIVERED
self.__resource_response_timeout = time.time()+self.timeout
response_timeout_thread = threading.Thread(target=self.__response_timeout_job)
response_timeout_thread.setDaemon(True)
response_timeout_thread.start()
else:
RNS.log("Sending request "+RNS.prettyhexrep(self.request_id)+" as resource failed with status: "+RNS.hexrep([resource.status]), RNS.LOG_DEBUG)
self.status = RequestReceipt.FAILED
@ -924,6 +928,15 @@ class RequestReceipt():
self.callbacks.failed(self)
def __response_timeout_job(self):
while self.status == RequestReceipt.DELIVERED:
now = time.time()
if now > self.__resource_response_timeout:
self.request_timed_out(None)
time.sleep(0.1)
def request_timed_out(self, packet_receipt):
self.status = RequestReceipt.FAILED
self.concluded_at = time.time()
@ -932,9 +945,10 @@ class RequestReceipt():
if self.callbacks.failed != None:
self.callbacks.failed(self)
def response_resource_progress(self, resource):
if not self.status == RequestReceipt.FAILED:
self.status = RequestReceipt.DELIVERED
self.status = RequestReceipt.RECEIVING
if self.packet_receipt != None:
self.packet_receipt.status = RNS.PacketReceipt.DELIVERED
self.packet_receipt.proved = True
@ -943,8 +957,6 @@ class RequestReceipt():
self.packet_receipt.callbacks.delivery(self.packet_receipt)
self.progress = resource.get_progress()
now = time.time()
self.__resource_response_timeout = time.time()+self.timeout
if self.callbacks.progress != None:
self.callbacks.progress(self)

15
RNS/Resource.py
View File

@ -32,15 +32,16 @@ class Resource:
# maximum size a resource should be, if
# it is to be handled within reasonable
# time constraint, even on small systems.
#
# A small system in this regard is
# defined as a Raspberry Pi, which should
# be able to compress, encrypt and hash-map
# the resource in about 10 seconds.
#
# This constant will be used when determining
# how to sequence the sending of large resources.
MAX_EFFICIENT_SIZE = 16 * 1024 * 1024
RESPONSE_MAX_GRACE_TIME = 10
# The maximum size to auto-compress with
# bz2 before sending.
@ -389,7 +390,12 @@ class Resource:
elif self.status == Resource.TRANSFERRING:
if not self.initiator:
rtt = self.link.rtt if self.rtt == None else self.rtt
if self.rtt == None:
rtt = self.link.rtt
else:
rtt = self.rtt
sleep_time = self.last_activity + (rtt*self.part_timeout_factor) + Resource.RETRY_GRACE_TIME - time.time()
if sleep_time < 0:
@ -541,10 +547,9 @@ class Resource:
self.req_resp = self.last_activity
rtt = self.req_resp-self.req_sent
if rtt >= self.link.rtt:
self.part_timeout_factor = Resource.PART_TIMEOUT_FACTOR_AFTER_RTT
if self.rtt == None:
self.rtt = rtt
self.rtt = self.link.rtt
self.watchdog_job()
elif rtt < self.rtt:
self.rtt = max(self.rtt - self.rtt*0.05, rtt)