Let's see how to do this in code. The simplest web server started at port 12345 would be
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lmc_http_server(12345, function(url)
print('Callback for ' .. url)
end)The output in LuaMacros console would be "Callback for /sayHi".
Let's do something more useful with flight simulation example.
Have this code:
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lmc_http_server(12345, function(url)
if url == '/beacon_on' then
lmc_xpl_command('sim/lights/beacon_lights_on')
elseif url == '/beacon_off' then
lmc_xpl_command('sim/lights/beacon_lights_off')
else
print('Callback for ' .. url)
end
end)Code: Select all
<html>
<a href="http://localhost:12345/beacon_on">Beacon on</a>
<a href="http://localhost:12345/beacon_off">Beacon off</a>
</html>Now let's make the LUA code more universal. You can forward any command to Xplane simulator. Consider any request starting with /command/ as Xplane command:
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lmc_http_server(12345, function(url)
if url:match("^/command/.+") then
lmc_xpl_command(url:sub(10))
else
print('Unknown request ' .. url)
end
end)
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<html>
<a href="http://localhost:12345/command/sim/lights/beacon_lights_on">Beacon on</a>
<a href="http://localhost:12345/command/sim/lights/beacon_lights_off">Beacon off</a>
<a href="http://localhost:12345/command/sim/lights/taxi_lights_on">Taxi on</a>
<a href="http://localhost:12345/command/sim/lights/taxi_lights_off">Taxi off</a>
</html>There's more. The web page doesn't work well now. And I don't mean it doesn't have very nice background image and links displayed as buttons at light panel. The problem is you click the link and end up at page generated by LuaMacros application which shows just OK. You don't see you nice panel any more. If you are html developer you don't care and convert links to some modern AJAX calls. If you're not you just add "/back" at the beginning of your links. Now LuaMacros recognizes the "/back" at the beginning and use it internally. It means the "/back" won't arrive into your LUA code. You don't need to change the code. What LuaMacros application does is it won't generate just "OK" result page but page which will hit Back button of your browser via JavaScript. So you will end up at your original page with panel. So try this html code:
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<html>
<a href="http://localhost:12345/back/command/sim/lights/beacon_lights_on">Beacon on</a>
<a href="http://localhost:12345/back/command/sim/lights/beacon_lights_off">Beacon off</a>
<a href="http://localhost:12345/back/command/sim/lights/taxi_lights_on">Taxi on</a>
<a href="http://localhost:12345/back/command/sim/lights/taxi_lights_off">Taxi off</a>
</html>Code: Select all
lmc_http_server(12345, function(url)
if url == '/getADF' then
return lmc_get_xpl_variable('sim/cockpit/radios/adf1_freq_hz')
else
print('Unknown request ' .. url)
end
end)
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lmc_http_server(12345, function(url)
if url:match("^/command/.+") then
lmc_xpl_command(url:sub(10))
elseif url:match("^/get/.+") then
return lmc_get_xpl_variable(url:sub(6))
else
print('Unknown request ' .. url)
end
end)One more thing: I didn't forget you, web developers with AJAX calls and perfect panels. Return second argument from web server handler and you can set the content type. Something like:
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return '{"HDG" : 123}', 'application/json'