add sniff examples

Medium_articles/python_sniff_scanner/sniff_example.py

@@ -0,0 +1,33 @@
+import os
+import socket
+
+
+# host to listen
+HOST = '192.168.1.114'
+
+
+def sniffing(host, win, socket_prot):
+
+    while True:
+        sniffer = socket.socket(socket.AF_INET, socket.SOCK_RAW, socket_prot)
+        sniffer.bind((host, 0))
+        
+        # include the IP headers in the captured packets
+        sniffer.setsockopt(socket.IPPROTO_IP, socket.IP_HDRINCL, 1)
+
+        if win == 1:
+            sniffer.ioctl(socket.SIO_RCVALL, socket_RCVALL_ON)
+
+        # read in a single packet
+        print(sniffer.recvfrom(65565))
+
+
+def main(host):
+    if os.name == 'nt':
+        sniffing(host, 1, socket.IPPROTO_IP)
+    else:
+        sniffing(host, 0, socket.IPPROTO_ICMP)
+
+
+if __name__ == '__main__':
+    main(HOST)