Added recursive_prs interface option

RNS/Interfaces/Interface.py

@@ -106,6 +106,7 @@ class Interface:
         self.discoverable             = False
         self.last_discovery_announce  = 0
         self.bootstrap_only           = False
+        self.recursive_prs            = False
         self.parent_interface         = None
         self.spawned_interfaces       = None
         self.tunnel_id                = None

RNS/Reticulum.py

@@ -806,6 +806,9 @@ class Reticulum:
         bootstrap_only = False
         if "bootstrap_only" in c: bootstrap_only = c.as_bool("bootstrap_only")
 
+        recursive_prs = False
+        if "recursive_prs" in c: recursive_prs = c.as_bool("recursive_prs")
+
         ignore_config_warnings = False
         if "ignore_config_warnings" in c: ignore_config_warnings = c.as_bool("ignore_config_warnings")
 
@@ -886,6 +889,7 @@ class Reticulum:
                     interface.discovery_bandwidth = discovery_bandwidth
                     interface.discovery_modulation = discovery_modulation
 
+                    interface.recursive_prs = recursive_prs
                     interface.announce_rate_target = announce_rate_target
                     interface.announce_rate_grace = announce_rate_grace
                     interface.announce_rate_penalty = announce_rate_penalty
@@ -1044,7 +1048,8 @@ class Reticulum:
             RNS.panic()
 
     def _add_interface(self, interface, mode = None, configured_bitrate=None, ifac_size=None, ifac_netname=None, ifac_netkey=None,
-                       announce_cap=None, announce_rate_target=None, announce_rate_grace=None, announce_rate_penalty=None, bootstrap_only=False):
+                       announce_cap=None, announce_rate_target=None, announce_rate_grace=None, announce_rate_penalty=None,
+                       bootstrap_only=False, recursive_prs=False):
         if not self.is_connected_to_shared_instance:
             if interface != None and issubclass(type(interface), RNS.Interfaces.Interface.Interface):
                 
@@ -1059,6 +1064,7 @@ class Reticulum:
                 if ifac_size != None: interface.ifac_size = ifac_size
                 else:                 interface.ifac_size = interface.DEFAULT_IFAC_SIZE
 
+                interface.recursive_prs = recursive_prs
                 interface.announce_cap = announce_cap if announce_cap != None else Reticulum.ANNOUNCE_CAP/100.0
                 interface.announce_rate_target = announce_rate_target
                 interface.announce_rate_grace = announce_rate_grace

RNS/Transport.py

@@ -2915,7 +2915,8 @@ class Transport:
         if attached_interface != None:
             should_ingress_limit = attached_interface.should_ingress_limit_pr()
             if RNS.Reticulum.transport_enabled():
-                if attached_interface.mode in RNS.Interfaces.Interface.Interface.DISCOVER_PATHS_FOR: should_search_for_unknown = True
+                if attached_interface.recursive_prs: should_search_for_unknown = True
+                elif attached_interface.mode in RNS.Interfaces.Interface.Interface.DISCOVER_PATHS_FOR: should_search_for_unknown = True
 
         if RNS.sl(RNS.LOG_DEBUG):
             interface_str = f" on {attached_interface}"

docs/source/interfaces.rst

@@ -1207,6 +1207,13 @@ These can be used to control various aspects of interface behaviour.
      link or a remote TCP tunnel) solely to discover better local
      infrastructure, which then supersedes the bootstrap interface.
 
+
+ * | The ``recursive_prs`` option allows you to enable recursive path
+     discovery on an interface regardless of its configured interface
+     mode. When this option is enabled, Reticulum will attempt to
+     recursively discover paths for path requests received on this
+     interface.
+
 .. _interfaces-modes:
 
 Interface Modes