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Reboot Chromecast - Printable Version

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+--- Thread: Reboot Chromecast (/showthread.php?tid=955)

Reboot Chromecast - BjornHBrudeli - 23.08.2017

Hi,
I'm struggling with controlling a Chromecast from LM. I'm using  this script provided by Erwin:
Code:
-- ****** Control Chromecast with 1 byte object version 1.0 created by Erwin van der Zwart ******* --
-- **************************************** SET PARAMETERS *************************************** --

-- Chromecast IP address
ip_chromecast = '192.168.10.23'

-- Additional info from browser about
-- http://192.168.10.23:8008/ssdp/device-desc.xml
-- http://192.168.10.23:8008/setup/scan_results
-- http://192.168.10.23:8008/setup/eureka_info?options=detail
-- http://192.168.10.23:8008/setup/supported_timezones
-- http://geeknizer.com/how-chromecast-works-chromecast-protocol-explained/

value = event.getvalue()

require 'socket.http'

function control_chromecast(uri, request)
 local request_body = request
 local response_body = { }
 local res, code, response_headers = socket.http.request
 {
   url = "http://" .. ip_chromecast .. ":8008/" .. uri;
   method = "POST";
   headers =
   {
     ["Content-Type"] = "application/x-www-form-urlencoded";
     ["Content-Length"] = #request_body;
   };
   source = ltn12.source.string(request_body);
   sink = ltn12.sink.table(response_body);
 }
 return res, code, response_headers
end

-- Action on value 1
if value == 1 then
    -- Start Youtube video
    res, code, response_headers = control_chromecast('apps/YouTube', [[v=_iuBO1lkch8]])
end

-- Action on value 2
if value == 2 then
    -- Stop Youtube video
    res, code, response_headers = control_chromecast('apps/YouTube', [[DELETE]])
end

-- Action on value 3
if value == 3 then
    -- Start Chromecast Homescreen
    res, code, response_headers = control_chromecast('apps/ChromeCast', [[]])
end

-- Log results
resulthandling = false

if resulthandling == true then
 -- Handler for results
 log("Status:", res and "OK" or "FAILED")
 log("HTTP code:", code)
 log("Response headers:")
 if type(response_headers) == "table" then
   for k, v in pairs(response_headers) do
     log(k, ":", v)
   end
 else
   -- Would be nil, if there is an error
   log("Not a table:", type(response_headers))
 end
 log("Response body:")
 if type(response_body) == "table" then
   log(table.concat(response_body))
 else
 end
end
Action value 1 and 2 does work. Value 3 gives an error 404 on the tv screen.

From my windows command line I can reboot the chromecast by doing this:
curl -Lv -H Content-Type:application/json http://192.168.22.99:8008/setup/reboot  -d "{""params"":""now""}" 

and start youtube with this:
curl -Lv -H Content-Type:application/json http://192.168.22.99:8008/apps/YouTube -d v=_iuBO1lkch8



I would like to do a reboot and get the homescreen/screensaver running from the LM.

I've added:

Code:
-- Action on value 4
if value == 4 then
 -- Reboot Chromecast
 res, code, response_headers = control_chromecast('setup/reboot', [[{params=now}]] )
end

But the response is 400 bad request (from Wireshark). I've tried changing the parameters to "{""params"":""now""}", [["{""params"":""now""}" ]] and all possible variations in between. I'm out of clue.

Would anyone help me?

Best regards
Bjorn

RE: Reboot Chromecast - BjornHBrudeli - 23.08.2017

I just needed to post here before I saw what I had to do:

This script reboots the Chromecast:

Code:
require'socket.http'
response_body = {}
request_body = [[{"params":"now"}]]
socket.http.request{
 url = "http://192.168.22.99:8008/setup/reboot";
   method = "POST";
   headers = {
   ["Content-Type"] = "application/json";
        ["Content-Length"] = string.len(request_body)
    };
    source = ltn12.source.string(request_body);
    sink = ltn12.sink.table(response_body);
}
 
I still cant force the screensaver back though.