Updated version

RNS/Destination.py

@@ -1,5 +1,6 @@
 import base64
 import math
+import time
 import RNS
 
 from cryptography.fernet import Fernet
@@ -146,7 +147,7 @@ class Destination:
         :param path_response: Internal flag used by :ref:`RNS.Transport<api-transport>`. Ignore.
         """
         destination_hash = self.hash
-        random_hash = RNS.Identity.get_random_hash()
+        random_hash = RNS.Identity.get_random_hash()[0:5]+int(time.time()).to_bytes(5, "big")
 
         if app_data == None and self.default_app_data != None:
             if isinstance(self.default_app_data, bytes):

RNS/Resource.py

@@ -804,7 +804,7 @@ class Resource:
         return progress
 
     def __str__(self):
-        return RNS.prettyhexrep(self.hash)+str(self.link)
+        return "<"+RNS.hexrep(self.hash)+"/"+RNS.hexrep(self.link.link_id)+">"
 
 
 class ResourceAdvertisement:

RNS/Transport.py

@@ -775,7 +775,8 @@ class Transport:
                     # First, check that the announce is not for a destination
                     # local to this system, and that hops are less than the max
                     if (not any(packet.destination_hash == d.hash for d in Transport.destinations) and packet.hops < Transport.PATHFINDER_M+1):
-                        random_blob = packet.data[RNS.Identity.KEYSIZE//8+10:RNS.Identity.KEYSIZE//8+20]
+                        random_blob = packet.data[RNS.Identity.KEYSIZE//8:RNS.Identity.KEYSIZE//8+RNS.Reticulum.TRUNCATED_HASHLENGTH//8]
+                        announce_emitted = int.from_bytes(random_blob[5:10], "big")
                         random_blobs = []
                         if packet.destination_hash in Transport.destination_table:
                             random_blobs = Transport.destination_table[packet.destination_hash][4]
@@ -796,8 +797,18 @@ class Transport:
                             else:
                                 # If an announce arrives with a larger hop
                                 # count than we already have in the table,
-                                # ignore it, unless the path is expired
-                                if (time.time() > Transport.destination_table[packet.destination_hash][3]):
+                                # ignore it, unless the path is expired, or
+                                # the emission timestamp is more recent.
+                                now = time.time()
+                                path_expires = Transport.destination_table[packet.destination_hash][3]
+                                
+                                path_announce_emitted = 0
+                                for path_random_blob in random_blobs:
+                                    path_announce_emitted = max(path_announce_emitted, int.from_bytes(path_random_blob[5:10], "big"))
+                                    if path_announce_emitted >= announce_emitted:
+                                        break
+
+                                if (now >= path_expires):
                                     # We also check that the announce hash is
                                     # different from ones we've already heard,
                                     # to avoid loops in the network
@@ -809,7 +820,13 @@ class Transport:
                                     else:
                                         should_add = False
                                 else:
-                                    should_add = False
+                                    if (announce_emitted > path_announce_emitted):
+                                        if not random_blob in random_blobs:
+                                            RNS.log("Replacing destination table entry for "+str(RNS.prettyhexrep(packet.destination_hash))+" with new announce, since it was more recently emitted", RNS.LOG_DEBUG)
+                                            should_add = True
+                                        else:
+                                            should_add = False
+
                         else:
                             # If this destination is unknown in our table
                             # we should add it

RNS/_version.py

@@ -1 +1 @@
-__version__ = "0.2.7"
+__version__ = "0.2.8"