update

The problem is when we open a file and start reading from it, the position of file dose not get reset until I close it. So we have to open can close the file  multiple time or we have to move to beginning of the file as we are passing the file to multiple functions

Author: mayank922

chapter04/find_ddos.py

@@ -92,5 +92,10 @@ def find_attack(pcap):
     with open(pcap_file, 'rb') as file:
         _pcap = dpkt.pcap.Reader(file)
         find_download(_pcap)
+    with open(pcap_file, 'rb') as file:
+        _pcap = dpkt.pcap.Reader(file)
         find_hivemind(_pcap)
+            
+    with open(pcap_file, 'rb') as file:
+        _pcap = dpkt.pcap.Reader(file)
         find_attack(_pcap)