Rob,

Thanks for the reply.

But no errors here:

bash-3.00# perl testing.pl 
1..73
ok 1 - use Net::SSH2;
ok 2 - new session isa Net::SSH2
ok 3 - error state clear
ok 4 - set banner
ok 5 - LIBSSH2_* constants
ok 6 - list version match
ok 7 # skip version not decimal
ok 8 - banner is SSH-2.0-libssh2_1.4.0
ok 9 - poll indefinite
ok 10 - poll 1/4 second
ok 11 - ->sock is undef before connect

To test the connection capabilities of Net::SSH2, we need a test site 
+running
a secure shell server daemon.  Enter 'localhost' to use this host.

Select host [ENTER to skip]: 192.168.1.98

ok 12 - connect to 192.168.1.98
ok 13 - ->sock isa IO::Socket::INET isa IO::Socket::INET
ok 14 - kex method: diffie-hellman-group-exchange-sha1
ok 15 - hostkey method: ssh-rsa
ok 16 - crypt_cs method: aes128-ctr
ok 17 - crypt_sc method: aes128-ctr
ok 18 - mac_cs method: hmac-sha1
ok 19 - mac_sc method: hmac-sha1
ok 20 - comp_cs method: none
ok 21 - comp_sc method: none
ok 22 - have MD5 hostkey hash
ok 23 - have SHA1 hostkey hash

Enter username [root]: netcool
ok 24 - authenticate: gssapi-keyex,gssapi-with-mic,publickey,password,
+keyboard-interactive
ok 25 - list matches comma-separated
ok 26 - not authenticated yet
[user netcool]
Password: ok 27 - authenticated via: keyboard
ok 28 - authenticated successfully
ok 29 - new channel isa Net::SSH2::Channel
ok 30 - set blocking
ok 31 - not at EOF
ok 32 - normal extended data handling
ok 33 - merge extended data
ok 34 - empty setenv
ok 35 - set environment variables
ok 36 - verify session
ok 37 - set disconnect callback
ok 38 - SFTP session isa Net::SSH2::SFTP
ok 39 - verify session
ok 40 - create directory net_ssh2_1737
ok 41 - stat directory
ok 42 - type is directory
ok 43 - directory name matches
ok 44 - put testing.pl to remote
ok 45 # skip - IO::Scalar required
ok 46 # skip - IO::Scalar required
ok 47 - unlink non-existant file fails
ok 48 - got LIBSSH2_FX_NO_SUCH_FILE error
ok 49 - rename net_ssh2_1737/testing.pl -> net_ssh2_1737/testing.pl.re
+named
ok 50 - stat net_ssh2_1737/testing.pl.renamed
ok 51 - stat filename matches
ok 52 - stat filesize matches
ok 53 - opened file isa Net::SSH2::File
ok 54 - compare stat and fstat
ok 55 - compare fstat % and %$
ok 56 - opened directory isa Net::SSH2::Dir
ok 57 - found net_ssh2_1737/testing.pl.renamed
ok 58 - opened file isa Net::SSH2::File
ok 59 - read '\# THIS LINE WILL BE READ BY A TEST BELOW'
ok 60 - unlink net_ssh2_1737/testing.pl.renamed
ok 61 - remove directory net_ssh2_1737
ok 62 - close SFTP session
ok 63 - exec 'ls -d /'
ok 64 - got poll response
ok 65 - got input event
ok 66 - got result '/'
ok 67 - no more lines
ok 68 # skip  - public key infrastructure not present
ok 69 # skip  - public key infrastructure not present
ok 70 # skip  - public key infrastructure not present
ok 71 # skip  - public key infrastructure not present
ok 72 - close channel
ok 73 - sent disconnect message
[download]


Thanks,
Ashok.

no errors here

Good - no problems with that version of the libssh2 library. Are you certain that your failing script uses the very same libssh2 library ?

Next thing to do would be to determine which line of code in your script is producing the error. I don't see anything in the subroutine you posted that should cause that error, so it probably happens before that sub is called.

Cheers,
Rob

In case the response is yes, then the problem may be caused by some incompatibility between libssh2 and the remote SSH server software.

If the response is no, then you are looking at the wrong place. There should be some difference between the two scripts that causes them to perform differently.

From your previous posts, I see that you are trying to mix SSH and threads, it is possible that Net::SSH2 amd libssh2 are not thread safe.

You may also like to check Net::OpenSSH::Compat::SSH2, an adaptor module for Net::OpenSSH providing the API of Net::SSH2. OpenSSH client is quite more mature than libssh2, and all SSH server software vendors ensure that their products interopetate with it.

Hi Salva,

Thanks for your reply.

Are both scripts connecting to the same host as the same user?

Yes. That's correct.

then the problem may be caused by some incompatibility between libssh2 and the remote SSH server software.

This sub routine works perfectly in Perl 5.8.8 (may be that is ActivePerl) but now it is Perl 5.8.9. Do you think that this might be the cause?

Thanks,
Ashok.

So, both scripts fail under 5.8.9? or are you running one under 5.8.8 and the other under 5.8.9?

It is very unlikely that the changes between 5.8.8 and 5.8.9 could affect Net::SSH2, but there may be other changes as versions of the module, or the library or of any of its dependencies.

Who knows! you have not given enough detail.