SLGOGP Teleport Strawman

This strawman represents a possible open teleport protocol. The sequencing is described first, which also introduces the major players: Client, Agent Domain, Simulator/Region Domain A, Simulator/Region Domain B. For perspective, the current Second Life Grid teleport flow is also included. Following that are the draft specifications for the two main pieces, called rezAvatar and derezAvatar on the agent domain. The simulator side portions of this protocol have been tentatively dubbed "teleport_avatar" and "give_up_av_to_pipe".

Teleport Flow

Here is the basic flow for current SL teleports:

Fine tuning the proposed protocol and cap names after discussion with AWG groupies resulted in a unified approach for Login, Teleport, and Logout, diagrammed below:

Login

Teleport

Logout

place_avatar

• Once the viewer acquires the cap for place_avatar, it requests it from the agent domain
• The viewer can also invoke place_avatar for teleport

Request: viewer -> agentd

{
    'region_url': <r_url>
    'position':  [x, y, z]
}

Response

{
  'seed_capability': uri string
  'look_at' : [f32, f32, f32]
  'sim_ip': ip string
  'sim_port': int
  'region_x': int
  'region_y': int
  'region_id' : uuid
  'sim_access' : <PG/Mature>
  'connect': bool
  'position': [f32, f32, f32]
// The above are the same as response to rez_avatar
// The following are only returned on login, not over teleport
   'session_id':<uuid>
   'secure_session_id':<uuid>
   'circuit_code':<int>
// Extra stuff
   'connect': <bool>
}

request_rez_avatar

Request: agentd -> simulator

{
   'agent_id' : <uuid>,
   'first_name': <string>,
   'last_name': <string>,
   'age_verified' : <boolean>,
   'agent_access' : <boolean>,
   'allow_redirect: <boolean>, // delete, moved to rez_avatar
   'god_level':  <int>,
   'identified':  <bool>,
   'transacted': <bool>,
   'limited_to_estate': <int>
    'sim_access' : <PG/Mature>
}

Example: (hard coded)

{
  'agent_id' : <uuid>,
  'first_name': <string>,
  'last_name': <string>,
  'age_verified' : false, 
  'agent_access' : false,
  'allow_redirect: 1,
  'god_level':  0,
  'identified':  false,
  'transacted': false,
  'limited_to_estate': 1
  'sim_access' : 'PG'
}

Response to request_rez_avatar

{
   'rez_avatar':<cap>
   'sim_ip': ip string
   'sim_port': int
   'region_x': int
   'region_y': int
   'region_id' : uuid
   'sim_access' : <PG/Mature>
   'seed_capability': uri string
   'granters': []
}

rez_avatar

Request: agentd -> simulator OR simulator a -> simulator b via derez_avatar

• For login, the agent domain then invokes rez_avatar on the simulator at the given region_url
• For teleport, the agent domain invokes derez_avatar on simulator a, which invokes rez_avatar on simulator b

{
   'circuit': <int>,
   'god_overide':   <bool>,
   'position': [x, y, z],
   'secure_session_id':  <uuid>,
   'session_id':  <uuid>,
   'inventory_host':  <uri string>, // not really here!
   'allow_redirect: <boolean>,
   'attachment_data': [ {'attachment_point':<int>, 'item_id':<uuid>, 'asset_id':<uuid> | 'asset_data':<binary>}...]
   'baked_texture_data': [ {'texture_id':<uuid>, 'asset_host_name':<host?????>}...]
   'texture_data': [ <uuid>...]
   'animations':[{'state':<uuid>, 'source':<uuid>, 'sequence':<int>}...]

   // The following are only sent from simulator a -> simulator b via derez_avatar
   'attachment_data': [ {'attachment_point':<int>, 'item_id':<uuid>, 'asset_id':<uuid> | 'asset_data':<binary>}...]
   'baked_texture_data': [ {'texture_id':<uuid>, 'asset_host_name':<host?????>}...]
   'texture_data': [ <uuid>...]
   'animations':[{'state':<uuid>, 'source':<uuid>, 'sequence':<int>}...]
}

Response: simulator -> agentd

• The simulator then returns the actual region (in case it might be different from requested) and the seed cap.

{
   'look_at' : [f32, f32, f32]
   'position': [f32, f32, f32]
// Extra stuff
   'connect': <bool>
}

derez_avatar

Request: agentd -> simulator a

{
    'region_url': <r_url>
    'position':  [x, y, z]
}

Response: simulator a -> agentd

Response: simulator -> agentd

{
   'look_at' : [f32, f32, f32]
   'position': [f32, f32, f32]
// Extra stuff
   'connect': <bool>
}