ROSBridge - Unknown Operation: Auth?

edit

Hi Everyone,

I have ROSBridge Server and a client I wrote communicating just fine. Now I want to enable authentication.

I set "authenticate" to true in the ROSBridge launch file. I also started rosauth and set the "secret_file_location" param to point to a text file containing a 16 character key (which I use to encrypt my MAC using SHA-256).

When I launch the ROSBridge server, it disconnects any clients which communicate with it unless they have have "auth" in their "op" field. So if I try to "subscribe" or "publish", it will just disconnect the client. Now, the peculiar thing is that ROSBridge will then print to screen: "Unknown operation: auth. Allowed operations: ['call_service', 'publish', 'subscribe', 'unsubscribe', 'unadvertise', 'advertise']"

So it definitely understands that "auth" is an operation... because it does not immediately disconnect my client. However it tells me that "auth" is unknown. What's the deal?

EDIT: Here is my launch file:

<launch>
  <arg name="port" default="9090" />
  <arg name="ssl" default="false" />
  <arg name="certfile" />
  <arg name="keyfile" />
  <arg name="authenticate" default="true" />

  <param name="/rosbridge/port" value="$(arg port)"/>

  <group ns="ros_mac_authentication">
  <param name="secret_file_location" value="/home/developer/SecretFile.secret" />
  <node pkg="rosauth" type="ros_mac_authentication" name="ros_mac_authentication" />
  </group>

  <group if="$(arg ssl)">
    <node name="rosbridge_websocket" pkg="rosbridge_server" type="rosbridge_websocket" output="screen">
      <param name="certfile" value="$(arg certfile)" />
      <param name="keyfile" value="$(arg keyfile)" />
      <param name="authenticate" value="$(arg authenticate)" />
    </node>
  </group>
  <group unless="$(arg ssl)">
    <node name="rosbridge_websocket" pkg="rosbridge_server" type="rosbridge_websocket" output="screen">
      <param name="authenticate" value="$(arg authenticate)" />
    </node>
  </group>

  <node name="rosapi" pkg="rosapi" type="rosapi" />
</launch>