Query and Control ESP700 stream
Input
[ESP701]action=<action> <CLEAR_ERROR>json=<no> pwd=<admin password>
- 
json=no the output format can be in JSON or plain text
 - 
pwd=
the admin password if authentication is enabled  - 
action
 - if action is empty, it will display current state
 - 
if action is not empty, it will set the action currently only these actions are supported:
- ABORT
 - PAUSE
 - RESUME
 
 - 
CLEAR_ERROR
 - if CLEAR_ERROR is present, it will clear the current error state
 
Output
- In json format
 
{
   "cmd":"701",
   "status":"ok",
   "data":{
      "status":"processing",
      "total":"1000",
      "processed":"500",
      "type":"1",
      "name":"/SD/myfile.gco"
   }
}
cmdId of requested command, should be701statusstatus of command, should beokdatacontent of response, here the current state of stream
