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Improved link and reverse table culling

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Mark Qvist 2025-04-08 16:25:18 +02:00
parent f9d42082a2
commit 581b16f87c
1 changed files with 24 additions and 1 deletions
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25
RNS/Transport.py
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@ -76,7 +76,7 @@ class Transport:
STATE_RESPONSIVE = 0x02
LINK_TIMEOUT = RNS.Link.STALE_TIME * 1.25
REVERSE_TIMEOUT = 30*60 # Reverse table entries are removed after 30 minutes
REVERSE_TIMEOUT = 8*60 # Reverse table entries are removed after 8 minutes
DESTINATION_TIMEOUT = 60*60*24*7 # Destination table entries are removed if unused for one week
MAX_RECEIPTS = 1024 # Maximum number of receipts to keep track of
MAX_RATE_TIMESTAMPS = 16 # Maximum number of announce timestamps to keep per destination
@ -137,6 +137,8 @@ class Transport:
receipts_check_interval = 1.0
announces_last_checked = 0.0
announces_check_interval = 1.0
pending_prs_last_checked = 0.0
pending_prs_check_interval = 30.0
hashlist_maxsize = 1000000
tables_last_culled = 0.0
tables_cull_interval = 5.0
@ -501,6 +503,15 @@ class Transport:
Transport.packet_hashlist_prev = Transport.packet_hashlist
Transport.packet_hashlist = set()
# Cull invalidated path requests
if time.time() > Transport.pending_prs_last_checked+Transport.pending_prs_check_interval:
for destination_hash in Transport.pending_local_path_requests.copy():
if not Transport.pending_local_path_requests[destination_hash] in Transport.interfaces:
RNS.log(f"Removing {RNS.Transport.pending_local_path_requests[destination_hash]} for pending path request", RNS.LOG_CRITICAL) # TODO: Remove debug
Transport.pending_local_path_requests.pop(destination_hash)
Transport.pending_prs_last_checked = time.time()
# Cull the path request tags list if it has reached its max size
if len(Transport.discovery_pr_tags) > Transport.max_pr_tags:
Transport.discovery_pr_tags = Transport.discovery_pr_tags[len(Transport.discovery_pr_tags)-Transport.max_pr_tags:len(Transport.discovery_pr_tags)-1]
@ -518,6 +529,12 @@ class Transport:
reverse_entry = Transport.reverse_table[truncated_packet_hash]
if time.time() > reverse_entry[IDX_RT_TIMESTAMP] + Transport.REVERSE_TIMEOUT:
stale_reverse_entries.append(truncated_packet_hash)
elif not reverse_entry[IDX_RT_OUTB_IF] in Transport.interfaces:
RNS.log(f"Removing reverse table entry since next-hop interface disappeared", RNS.LOG_CRITICAL) # TODO: Remove
stale_reverse_entries.append(truncated_packet_hash)
elif not reverse_entry[IDX_RT_RCVD_IF] in Transport.interfaces:
stale_reverse_entries.append(truncated_packet_hash)
RNS.log(f"Removing reverse table entry since prev-hop interface disappeared", RNS.LOG_CRITICAL) # TODO: Remove
# Cull the link table according to timeout
stale_links = []
@ -527,6 +544,12 @@ class Transport:
if link_entry[IDX_LT_VALIDATED] == True:
if time.time() > link_entry[IDX_LT_TIMESTAMP] + Transport.LINK_TIMEOUT:
stale_links.append(link_id)
elif not link_entry[IDX_LT_NH_IF] in Transport.interfaces:
RNS.log(f"Removing link {RNS.prettyhexrep(link_id)} since next-hop interface disappeared", RNS.LOG_CRITICAL) # TODO: Remove
stale_links.append(link_id)
elif not link_entry[IDX_LT_RCVD_IF] in Transport.interfaces:
RNS.log(f"Removing link {RNS.prettyhexrep(link_id)} since prev-hop interface disappeared", RNS.LOG_CRITICAL) # TODO: Remove
stale_links.append(link_id)
else:
if time.time() > link_entry[IDX_LT_PROOF_TMO]:
stale_links.append(link_id)