SimulatorLoginProtocol

(This page is a work in progress)

Process

There are 4 basic steps to the viewer login process.

Step 1

The viewer contacts the grid login service. On a viewer, this can be specified by the -loginuri command line switch or by picking a grid in the grid manager of a viewer that provides this.

The viewer sends an XMLRPC login_to_simulator message to the loginuri. This provides

• "first" - User first name
• "last" - User last name
• "passwd" - Hashed password
• "version" - Viewer version
• "start" - Start location. If "home" then the user's home location, "last" is the user's location on previous logout. Start can also be a SLURL (todo: document the format of this).

Step 2

If the user is authenticated, the simulator at which they want to start is contacted and told that they are coming. It is passed a circuit code for that viewer.

Step 3

If the simulator will accept the user, then the user is passed the details of this simulator (chiefly the URI to use, as well as the circuit code).

Step 4

The viewer connects directly to the simulator and is authenticated using the circuit code.

Code

The parts of OpenSimulator that handle steps 1 and 2 can be found in OpenSim.Services.LLLoginService package.

References

http://justincc.org/blog/2011/05/26/opensimulators-login-process-and-common-login-problems/ provides some diagrams that illustrate the login process.