You're right. I suggest something like this for client side: 

print $sock "$file\0";

[download]
and something like this for server: 
{
    local $/ = "\0";
    $file1 = <$conn>;
    chomp $file1;
}

[download]

"\n" isn't portable. And at least on *nix file name may contain "\n"

In reply to Re^3: FIle transfer using sockets by zwon
in thread FIle transfer using sockets by ashok13123

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