Hi, pals! 

I want to use libpcap to change the content of a package. 
(the content of a HTML page of a TCP package) The framework 
of the program I am using is taken from sniffer.c supplied 
at http://www.tcpdump.org/sniffer.c. 

My trouble is the function 

void got_packet(u_char *args, const struct pcap_pkthdr *header, const u_char *packet)

takes the package as a const variable, so I can not change the content 
of a const variable. 

Do you have some ideas about how to change the content of a package in 
my case? (I simply want to change a string in HTML page.)

Best regards,
George Ma
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