From: Fengfeng Li <lists@...>
Date: 2012-03-28T23:52:38+09:00
Subject: How to process telnet data(binary)

Hi everyone,

I'm using Net::telnet(windows) to get files from a linux system：

data = socket.cmd("gzip -c xxx")
f = File.open("abc.gz", "wb")
f.write data
f.close
system('winrar ... abc')

but this code works only for some files, other file reported an CRC
error when being unzipped.
To solve the problem, I type "gzip -c xxx >abc1.gz" and download abc1.gz
through ftp(binary mode) and compare it with abc.gz, and found they
actually have differences, some bytes are not the same. I guess it's
because the telnet protocol transfer some bytes before send it to me?

Please help me to work it out, Thanks a lot:)

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