Move from udp to ax.25

CRAPRNIAC Protocol.md

@@ -102,7 +102,7 @@ That's what the 'S' in CRAPRNIAC stands for.
 
 ## 8. Other Considerations
 
-- CRAPRNIAC does not prescribe a particular lower-layer protocol, though it is designed with a working AX.25 stack in mind, whether that's a classic serial TNC, a more modern bluetooth doodad, or Direwolf with kissattach creating an ax0 interface. The example implementation uses UDP packets over IP over AX.25.
+- CRAPRNIAC does not prescribe a particular lower-layer protocol, though it is designed with a working AX.25 stack in mind, whether that's a classic serial TNC, a more modern bluetooth doodad, or Direwolf with kissattach creating an ax0 interface. The example implementation used UDP packets over IP over AX.25 until the author realized it needed IP to be up already before it could work. Now it does everything in AX.25 directly.
 - CRAPRNIAC will squat on an amateur frequency of the operator's choice.
 
 ## 9. Conclusion

base_station/server.py

@@ -1,11 +1,14 @@
 import socket
 import time
 import threading
+import ax25
+import ax25.socket
 
 BASE_CALLSIGN = "KI5QKX-10"
 NETWORK_NAME = "HAMNET-HOUSTON"
 
 BEACON_INTERVAL = 10  # seconds
+BEACON_CALLSIGN = "CRAPR-0"
 
 # Fake IP pool
 IP_POOL = [
@@ -69,13 +72,13 @@ def handle_request(data, addr, sock):
 def beacon_loop(sock):
     while True:
         beacon = build_beacon().encode('utf-8')
-        # Beacon to *broadcast* — here we'll just send to our own callsign for now
-        sock.sendto(beacon, ('CRAPR-0',))
+        sock.sendto(beacon, (BEACON_CALLSIGN,))
         print(f"Sent beacon: {beacon.decode('utf-8')}")
         time.sleep(BEACON_INTERVAL)
 
 def main():
-    sock = socket.socket(socket.AF_AX25, socket.SOCK_DGRAM)
+    # sock = socket.socket(socket.AF_AX25, socket.SOCK_DGRAM) # Old python networking way
+    sock = ax25.socket.Socket()
     sock.bind((BASE_CALLSIGN,))  # Bind to our station callsign
     
     print(f"Base Station {BASE_CALLSIGN} starting up on {NETWORK_NAME}...")

client_node/client.py

@@ -1,5 +1,6 @@
 import socket
 import time
+import ax25
 
 CLIENT_CALLSIGN = "N0CALL-7"
 

requirements.txt

@@ -0,0 +1 @@
+pyham_ax25==1.0.2