Errors when using package

Error importing NaoQI. Please make sure that Aldebaran's NaoQI API is in your PYTHONPATH.

nao_walker or nao_sensors complain that they could not import NaoQI and exit.

Solution: The Python nodes assume that you have added Aldebaran's Python API to your PYTHONPATH environment variable to import them. Make sure that you have the Python SDK (and not the C++ SDK) in your PYTHONPATH environment variable, starting with NaoQI version 1.12 and 1.14.

Error: "Connection refused" / Could not create Proxy to ...

nao_walker or nao_sensors complain that they could not create a proxy e.g. to ALMotion or ALMemory and exit. Aldebaran's NaoQI might output more error messages to the console:

Example:

•  SOAP 1.1 fault: SOAP-ENV:Client [no subcode]
  "Connection refused"
  Detail: connect failed in tcp_connect()
  [ERROR] 1276074679.650960: Could not create Proxy to ALMotion or ALMemory, exiting.
  Exception message:
  modulename: 'ALNetwork'
  method: 'getModuleByName'
  desc: 'failed to get module ALMotion http://127.0.0.1:9559'
  from file: /home/opennao/work/aldebaran-sdk/src/naoqi/src/lib/alcommon/src/alnetwork.cpp:943

Solution:

• No connection to a running NaoQI could be established, or it does not run the requested module. Make sure that the IP and port are correct, and a NaoQI is running at that address (e.g. using the Nao's webinterface).

Error 28 fault: SOAP-ENV:Server [no subcode] / "Address already in use"

Starting the nao_driver.launch file with nao_walker, nao_sensors, and nao_controller directly exits because one of the nodes quits immediately ('Port not free. Another broker is using this port.')

Example:

• Error 28 fault: SOAP-ENV:Server [no subcode]
  "Address already in use"
  Detail: bind failed in soap_bind()
  [ERROR] [WallTime: 1323785545.107222] Could not create Proxy to "ALMotion". 
  Exception message:
  modulename: 'ALBroker' method: 'runBroker'
  Desc: 'Port not free. Another broker is using this port.'
  from file: /home/opennao/release-1.10/releases/src/naoqi/src/lib/alcommon/alcommon/alnetwork.cpp:1253
  Error -1 fault: SOAP-ENV:Client [no subcode]
  "End of file or no input: Operation interrupted or timed out"
  Detail: [no detail]

Solution:

• There appears to be a race condition in NaoQI proxy creation. Just try restarting the complete launch file, it will usually work then.