@mbridak Had an Oops, better not mention it.

not1mm/lib/cat_interface.py

@@ -111,7 +111,7 @@ def __init__(self, interface: str, host: str, port: int) -> None:
 
     def __check_sane_ip(self, ip: str) -> bool:
         """check if IP address look normal"""
-        x = ip.split()
+        x = ip.split(".")
         if len(x) != 4:
             return False
         for y in x:

not1mm/lib/cwinterface.py

@@ -31,6 +31,9 @@ def __init__(self, servertype: int, host: str, port: int) -> None:
         self.speed = 20
         self.winkeyer_functions = []
         if self.servertype == 2:
+            if not self.__check_sane_ip(self.host):
+                logger.critical(f"Bad IP: {self.host}")
+                return
             with ServerProxy(f"http://{self.host}:{self.port}") as proxy:
                 try:
                     self.winkeyer_functions = proxy.system.listMethods()
@@ -47,6 +50,16 @@ def __init__(self, servertype: int, host: str, port: int) -> None:
                         "http://%s:%s, xmlrpc Connection Refused", self.host, self.port
                     )
 
+    def __check_sane_ip(self, ip: str) -> bool:
+        """check if IP address look normal"""
+        x = ip.split(".")
+        if len(x) != 4:
+            return False
+        for y in x:
+            if not y.isnumeric():
+                return False
+        return True
+
     def sendcw(self, texttosend):
         """sends cw to k1el"""
         logger.debug(f"{texttosend=} {self.servertype=}")
@@ -61,7 +74,7 @@ def sendcw(self, texttosend):
     def _sendcw_xmlrpc(self, texttosend):
         """sends cw to xmlrpc"""
         logger.debug("xmlrpc: %s", texttosend)
-        if texttosend:
+        if texttosend and self.__check_sane_ip(self.host):
             with ServerProxy(f"http://{self.host}:{self.port}") as proxy:
                 try:
                     proxy.k1elsendstring(texttosend)
@@ -76,23 +89,35 @@ def _sendcw_xmlrpc(self, texttosend):
                     logger.debug(
                         "http://%s:%s, xmlrpc Connection Refused", self.host, self.port
                     )
+        else:
+            logger.critical(f"Bad IP: {self.host}")
 
     def _sendcw_udp(self, texttosend):
         """send cw to udp port"""
         logger.debug("UDP: %s", texttosend)
-        if texttosend:
+        if texttosend and self.__check_sane_ip(self.host):
             server_address_port = (self.host, self.port)
             # bufferSize          = 1024
             udp_client_socket = socket.socket(
                 family=socket.AF_INET, type=socket.SOCK_DGRAM
             )
-            udp_client_socket.sendto(bytes(texttosend, "utf-8"), server_address_port)
+            try:
+                udp_client_socket.sendto(
+                    bytes(texttosend, "utf-8"), server_address_port
+                )
+            except socket.gaierror:
+                ...
+        else:
+            logger.critical(f"Bad IP: {self.host.encode()}")
 
     def _sendcwcat(self, texttosend):
         """..."""
 
     def set_winkeyer_speed(self, speed):
         """doc"""
+        if not self.__check_sane_ip(self.host):
+            logger.critical(f"Bad IP: {self.host}")
+            return
         with ServerProxy(f"http://{self.host}:{self.port}") as proxy:
             try:
                 if "setspeed" in self.winkeyer_functions: