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Improved link request/response handling.

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This commit is contained in:
Mark Qvist 2021-09-03 16:23:31 +02:00
parent ecf0c55fd6
commit 58d48c18f4
2 changed files with 41 additions and 41 deletions
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80
RNS/Link.py
View File

@ -245,7 +245,7 @@ class Link:
RNS.log("Link "+str(self)+" established with "+str(self.destination)+", RTT is "+str(self.rtt), RNS.LOG_VERBOSE)
rtt_data = umsgpack.packb(self.rtt)
rtt_packet = RNS.Packet(self, rtt_data, context=RNS.Packet.LRRTT)
rtt_packet.send()
#rtt_packet.send()
self.had_outbound()
self.status = Link.ACTIVE
@ -491,53 +491,55 @@ class Link:
self.had_outbound()
def handle_request(self, request_id, unpacked_request):
requested_at = unpacked_request[0]
path_hash = unpacked_request[1]
request_data = unpacked_request[2]
if self.status == Link.ACTIVE:
requested_at = unpacked_request[0]
path_hash = unpacked_request[1]
request_data = unpacked_request[2]
if path_hash in self.destination.request_handlers:
request_handler = self.destination.request_handlers[path_hash]
path = request_handler[0]
response_generator = request_handler[1]
allow = request_handler[2]
allowed_list = request_handler[3]
if path_hash in self.destination.request_handlers:
request_handler = self.destination.request_handlers[path_hash]
path = request_handler[0]
response_generator = request_handler[1]
allow = request_handler[2]
allowed_list = request_handler[3]
allowed = False
if not allow == RNS.Destination.ALLOW_NONE:
if allow == RNS.Destination.ALLOW_LIST:
if self.__remote_identity.hash in allowed_list:
allowed = False
if not allow == RNS.Destination.ALLOW_NONE:
if allow == RNS.Destination.ALLOW_LIST:
if self.__remote_identity.hash in allowed_list:
allowed = True
elif allow == RNS.Destination.ALLOW_ALL:
allowed = True
elif allow == RNS.Destination.ALLOW_ALL:
allowed = True
if allowed:
RNS.log("Handling request "+RNS.prettyhexrep(request_id)+" for: "+str(path), RNS.LOG_DEBUG)
response = response_generator(path, request_data, request_id, self.__remote_identity, requested_at)
if response != None:
packed_response = umsgpack.packb([request_id, response])
if allowed:
RNS.log("Handling request "+RNS.prettyhexrep(request_id)+" for: "+str(path), RNS.LOG_DEBUG)
response = response_generator(path, request_data, request_id, self.__remote_identity, requested_at)
if response != None:
packed_response = umsgpack.packb([request_id, response])
if len(packed_response) <= Link.MDU:
RNS.Packet(self, packed_response, RNS.Packet.DATA, context = RNS.Packet.RESPONSE).send()
else:
response_resource = RNS.Resource(packed_response, self, request_id = request_id, is_response = True)
else:
identity_string = RNS.prettyhexrep(self.get_remote_identity()) if self.get_remote_identity() != None else "<Unknown>"
RNS.log("Request "+RNS.prettyhexrep(request_id)+" from "+identity_string+" not allowed for: "+str(path), RNS.LOG_DEBUG)
if len(packed_response) <= Link.MDU:
RNS.Packet(self, packed_response, RNS.Packet.DATA, context = RNS.Packet.RESPONSE).send()
else:
response_resource = RNS.Resource(packed_response, self, request_id = request_id, is_response = True)
else:
identity_string = RNS.prettyhexrep(self.get_remote_identity()) if self.get_remote_identity() != None else "<Unknown>"
RNS.log("Request "+RNS.prettyhexrep(request_id)+" from "+identity_string+" not allowed for: "+str(path), RNS.LOG_DEBUG)
def handle_response(self, request_id, response_data):
remove = None
for pending_request in self.pending_requests:
if pending_request.request_id == request_id:
remove = pending_request
try:
pending_request.response_received(response_data)
except Exception as e:
RNS.log("Error occurred while handling response. The contained exception was: "+str(e), RNS.LOG_ERROR)
if self.status == Link.ACTIVE:
remove = None
for pending_request in self.pending_requests:
if pending_request.request_id == request_id:
remove = pending_request
try:
pending_request.response_received(response_data)
except Exception as e:
RNS.log("Error occurred while handling response. The contained exception was: "+str(e), RNS.LOG_ERROR)
break
break
if remove != None:
self.pending_requests.remove(remove)
if remove != None:
self.pending_requests.remove(remove)
def request_resource_concluded(self, resource):
if resource.status == RNS.Resource.COMPLETE:

2
RNS/Resource.py
View File

@ -46,8 +46,6 @@ class Resource:
# bz2 before sending.
AUTO_COMPRESS_MAX_SIZE = MAX_EFFICIENT_SIZE
# TODO: Should be allocated more
# intelligently
PART_TIMEOUT_FACTOR = 3
MAX_RETRIES = 5
SENDER_GRACE_TIME = 10