It's just a warning .... in fact really no more than an fyi.
If Math::BigInt::GMP (which is much faster than Math::BigInt::FastCalc) can be found, then it will be used. Otherwise the slower Math::BigInt::FastCalc will be used, and the message you've quoted will appear.
I'm actually not sure if it's Math::BigInt::GMP or Math::BigInt::Pari (or both) that's being sought before resorting to Math::BigInt::FastCalc but line 6 of DH.pm would make that clear. (What does line 6 contain ?)
If you like to install the missing library, you'll get a faster SFTP and that message won't appear.
Cheers,
Rob | [reply] |
The 6th line of DH.pm has
use Math::BigInt lib => "GMP,Pari";
My program got segmentation fault after gettting the below error .
Herewith I have mentioned the debug log of my program ,Please look at this
Reading configuration data /root/.ssh/config
Reading configuration data /etc/ssh_config
Allocated local port 1023.
Connecting to 192.168.1.130, port 22.
Remote protocol version 2.0, remote software version OpenSSH_4.3p2 Debian-9
Math::BigInt: couldn't load specified math lib(s), fallback to Math::BigInt::FastCalc at /usr/lib/perl5/site_perl/5.6.1/Crypt/DH.pm line 6
Net::SSH::Perl Version 1.34, protocol version 2.0.
No compat match: OpenSSH_4.3p2 Debian-9.
Connection established.
Sent key-exchange init (KEXINIT), wait response.
Algorithms, c->s: 3des-cbc hmac-sha1 none
Algorithms, s->c: 3des-cbc hmac-sha1 none
Segmentation fault .
I think that In perl5.6.0 , doesn't has GMP and Pari files .
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The 6th line of DH.pm has use Math::BigInt lib => "GMP,Pari";
That means it will try to use Math::BigInt::GMP. If that fails it will try to use Math::BigInt::Pari. If that also fails it will use Math::BigInt::FastCalc and print out the message.
I would be surprised if installing Math::BigInt::GMP would fix the segfault. I would think the segfault is being caused by a different issue - but I don't know what that issue is.
I think that In perl5.6.0 , doesn't has GMP and Pari files.
Without GMP and Pari, I don't think you would have been able to get Net::SSH::Perl to install - but I've never used Net::SSH::Perl, and am no expert.
Instead, I use Net::SSH2 - which needs the libssh2 library.
I *think* Net::SFTP also provides good mileage on linux - though I've never used it either, as I'm on Windows.
Cheers,
Rob
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We could help you more if you can post some code. Meanwhile, GMP would require The GNU MP Bignum Library. Do you have libgmp installed? Ordinarily, I would say that Math::Pari wasn't working, but it seems to be working. Check that you have all the dependencies installed. If you need some help posting some code, just ask-:).
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I always found Net::SFTP hard to setup and sometimes very slow. You may want to consider Net::SFTP::Foreign, which wraps around the ssh commandline tool. Here you don't need the fancy math libraries.
print+qq(\L@{[ref\&@]}@{['@'x7^'!#2/"!4']});
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[d/l] |
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