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Is there a specific way to know if the file that we download through a web server (e.g.: Java) can be verified through Wireshark?

I want to check if the file is working perfectly from internal and external site.

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Can you describe the purpose of 'verification'? You need to make sure that server sending it properly or client receiving? – Dada Mar 30 '12 at 9:30
i need to make sure that the file in server is working properly. – Mar 30 '12 at 9:41
What's the reason for the Wireshark requirement? Is it really a requirement? – Ladadadada Mar 30 '12 at 9:50
Please explain "file is working properly". Files do not work. Servers work by sending content, often based on server scripts. Either of these are saved on a file system in form of a file. – Alois Mahdal Apr 5 '12 at 19:13
Java is not a file, it's a language. – John Gardeniers Apr 5 '12 at 21:44

If you want to check that file is the same on the server and on the client, you'd better use some hashing function and compare hashes. You may use md5sum or sha1sum from coreutils package on linux to get MD5 or SHA-1 hashes respectively or use this answer to get them on Windows.

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