add frequency

Author: duanhongyi

bin/icmp.py

@@ -88,7 +88,7 @@ def send_one_ping(my_socket, dest_addr, ID):
     my_socket.sendto(packet, (dest_addr, 1)) # Don't know about the 1
 
 
-def ping(dest_addr, timeout):
+def ping(dest_addr, timeout, frequency=3):
     """
     Returns either the delay (in seconds) or none on timeout.
     """
@@ -107,8 +107,9 @@ def ping(dest_addr, timeout):
 
     my_ID = os.getpid() & 0xFFFF
 
-    send_one_ping(my_socket, dest_addr, my_ID)
-    delay = receive_one_ping(my_socket, my_ID, timeout)
- 
+    for _ in range(frequency):
+        send_one_ping(my_socket, dest_addr, my_ID)
+        delay = receive_one_ping(my_socket, my_ID, timeout)
+        if delay: break
     my_socket.close()
     return delay

bin/sdns.py

@@ -69,7 +69,7 @@ def task(amapping_blacklist, ip_list):
         while True:
             for ip in ip_list:
                 try:
-                    delay  =  ping(ip, 9)
+                    delay  =  ping(ip, 2)
                 except socket.gaierror as e:
                     delay = None
                 if delay == None and ip not in amapping_blacklist: