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Implemented link establishment on ultra low bandwidth links

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Mark Qvist 2023-10-27 18:16:52 +02:00
parent 0e12442a28
commit f01074e5b8
5 changed files with 95 additions and 6 deletions
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42
RNS/Transport.py
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@ -1197,7 +1197,8 @@ class Transport:
if packet.packet_type == RNS.Packet.LINKREQUEST:
now = time.time()
proof_timeout = now + RNS.Link.ESTABLISHMENT_TIMEOUT_PER_HOP * max(1, remaining_hops)
proof_timeout = Transport.extra_link_proof_timeout(packet.receiving_interface)
proof_timeout += now + RNS.Link.ESTABLISHMENT_TIMEOUT_PER_HOP * max(1, remaining_hops)
# Entry format is
link_entry = [ now, # 0: Timestamp,
@ -2026,6 +2027,45 @@ class Transport:
else:
return None
@staticmethod
def next_hop_interface_bitrate(destination_hash):
next_hop_interface = Transport.next_hop_interface(destination_hash)
if next_hop_interface != None:
return next_hop_interface.bitrate
else:
return None
@staticmethod
def next_hop_per_bit_latency(destination_hash):
next_hop_interface_bitrate = Transport.next_hop_interface_bitrate(destination_hash)
if next_hop_interface_bitrate != None:
return (1/next_hop_interface_bitrate)
else:
return None
@staticmethod
def next_hop_per_byte_latency(destination_hash):
per_byte_latency = Transport.next_hop_per_bit_latency(destination_hash)
if per_byte_latency != None:
return per_byte_latency*8
else:
return None
@staticmethod
def first_hop_timeout(destination_hash):
latency = Transport.next_hop_per_byte_latency(destination_hash)
if latency != None:
return RNS.Reticulum.MTU * latency
else:
return RNS.Reticulum.DEFAULT_PER_HOP_TIMEOUT
@staticmethod
def extra_link_proof_timeout(interface):
if interface != None:
return ((1/interface.bitrate)*8)*RNS.Reticulum.MTU
else:
return 0
@staticmethod
def expire_path(destination_hash):
if destination_hash in Transport.destination_table: