A TNetFile is like a normal TFile except that it reads and writes its data via a rootd server (for more on the rootd daemon see the source files in root/rootd/src/).

TNetFile file names are in standard URL format with protocol "root" or "roots". The following are valid TNetFile URL's:

root://hpbrun.cern.ch/root/hsimple.root
root://pcna49a:5151/~na49/data/run821.root
root://pcna49d.cern.ch:5050//v1/data/run810.root

The only difference with the well known httpd URL's is that the root of the remote file tree is the user's home directory. Therefore an absolute pathname requires a // after the host or port specifier (see last example). Further the expansion of the standard shell characters, like ~, $, .., are handled as expected. TNetFile (actually TUrl) uses 1094 as default port for rootd.

Connecting to a rootd requires the remote user id and password. TNetFile allows three ways for you to provide your login: Setting it globally via the static functions:

TAuthenticate::SetGlobalUser() and TAuthenticate::SetGlobalPasswd()
Getting it from the ~/.netrc file (same file as used by ftp)
Command line prompt The different methods will be tried in the order given above. On machines with AFS rootd will authenticate using AFS (if it was compiled with AFS support).

If the protocol is specified as "rootk" kerberos5 will be used for authentication.

The rootd daemon lives in the directory $ROOTSYS/bin. It can be started either via inetd or by hand from the command line (no need to be super user).

The documentation for this class was generated from the following file:

net/net/src/TNetFile.cxx