Opening a root file from a server with password

Newbie
1

Dear ROOT expert,

I need to open ROOT files from a server, without connecting to it using ssh.

I have trying to use BasicAuth connection of TFile:
TFile *h = TFile::Open(“https://myusername:mypassword@nusrv9.na.infn.it:/path/file.root”)

and it returned this error:

SysError in TUnixSystem::UnixTcpConnect: connect (nusrv9.na.infn.it:443) (Connection refused)
Error in TSSLSocket::WrapWithSSL: cannot connect
Error in TWebFile::GetHead: cannot connect to host nusrv9.na.infn.it (errno=9)
SysError in TUnixSystem::UnixTcpConnect: connect (nusrv9.na.infn.it:443) (Connection refused)
Error in TSSLSocket::WrapWithSSL: cannot connect
Error in TWebSocket::ReOpen: cannot connect to host nusrv9.na.infn.it (errno=9)
Error in TWebFile::GetFromWeb10: cannot connect to host nusrv9.na.infn.it

Therefore, I assume BasicAuth does not work. What can be done then?
I have found some threads in this forum describing this problem, but nowhere with a working answer.

Is there something I can do to access my ROOT file remotely?

Best regards,
Antonio

2

For “https”, you need any “standard” ROOT 6 distribution and if you still get problems then I think it is a problem of the www server (note: the “:” before “/path” is not really needed).
Make sure that you are able to access your file in a “standard” web browser (e.g. “firefox”), when you try https://nusrv9.na.infn.it/path/file.root (it should ask you for the “myusername” and “mypassword”).

3

Thank you for your answer,

unfortunately opening the link with firefox does not work (it shows firefox connection problem).

4

Just to make sure … you do understand that the “myusername” and “mypassword” that you use for “https” are (in principle / usually) NOT the same as you use for e.g. the standard “ssh” login.

5

I actually did not know that.

However, firefox does not ask me for a password at all. It just shows the error of failed connection.

6

Just to make sure … you do understand that using “https://” (or “http://”) means that you are accessing some web server (which needs to be running there).

7

Good morning,
I can connect to ELOG of nusrv9.na.infn.it:8080 (https://elog.psi.ch/elog/) from the computers connected to the same net, so I thought a web server was already active. But maybe ELOG works in a different way.

I will check, thank you very much for pointing this out.

Best regards,
Antonio