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submissions/myatsenko/tcp-sniffer/sniffer.py

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+import socket, argparse, sys
+
+def parserfun():
+    parser = argparse.ArgumentParser(description="TCP scanner search ports")
+    parser.add_argument("--host", help=" type host, example: www.google.com",type=str, metavar="host", required=True)
+    parser.add_argument("--ports", type=range, metavar="start_port - end_port", nargs=2, default=[0, 65535], help="3-600")
+    return parser
+
+args = parserfun().parse_args()
+
+def scanner(host, start_port, end_port):
+    buffer = []
+    for port in range(start_port, end_port + 1):
+        connection = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+        connection.settimeout(0.3)
+        result = connection.connect_ex((host, port))
+
+        if result == 0:
+            op.append(port)
+            print(".", end="")
+            sys.stdout.flush()
+        connection.close()
+    print("\n")
+    return buffer
+
+try:
+ ports = scanner(args.host, args.ports[0], args.ports[1])
+except (KeyboardInterrupt, socket.gaierror, socket.error) as error:
+  print(error)
+  sys.exit()
+
+if ports:
+  print("Check: " + ", ".join(map(str, ports)))
+else:
+  print("No open ports")