HTTP WebSockets Interface

The WebSocket command interface is based on a tag system.

The format of a command is:

$tag COMMAND [optional=parameters, ...]

Once a connection is upgraded to a websocket, the following text based commands are available.

The graphdata URI allows streaming and retrieval of statistics over a single websockets connection.

The subscribe command subscribes a WebSocket to receive periodic statistical updates. The $tag value will be used while streaming statistics (see OTSStreamedJsonStats).

Command format:

$tag SUBSCRIBE <type=$item> [type2=$item2] [typeX=$itemX]

Possible values for type:

• pool
  • Refers to a $interfaceGroupID:$poolName pair, this is specified as the $item field
• class
  • Refers to statistics regarding a class. The following is available in the $item field…
    • Class:$interfaceGroupID,$classID
• basic
  • Refers to a basic counter. The following basic counters are available in the $item field…
    • Counter:ConfigManager:TotalPools
    • Counter:ConfigManager:TotalPoolMembers
    • Counter:ConfigManager:ClassPools:$interfaceGroupID,$classID
    • Counter:ConfigManager:TotalClassPools:$classID

Syntax: unsubscribe <tag>