class TNetSystem: public TSystem

TNetFile

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 root/rootd/src/*.cxx). TNetFile file names are in
standard URL format with protocol "root" or "roots". The following
are valid TNetFile URL's:

roots://hpsalo/files/aap.root
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:
1) Setting it globally via the static functions:
TAuthenticate::SetGlobalUser() and
TAuthenticate::SetGlobalPasswd()
2) Getting it from the ~/.netrc file (same file as used by ftp)
3) 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 "roots" a secure authetication
method will be used. The secure method uses the SRP, Secure Remote
 Passwords, package. SRP uses a so called "asymmetric key exchange    //
 protocol" in which no passwords are ever send over the wire. This    //
protocol is safe against all known security attacks. For more see:

                                                             //
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). For more info about rootd see the web page:

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