FlightGear Newsletter October 2012: Difference between revisions

FlightGear Newsletter October 2012 (view source)

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 === Making HTTP Requests via Nasal ===
-FlightGear versions >= 2.8 include a new feature to make HTTP requests using a new xmlhttprequest fgcommand. So, Nasal is able to execute so called "fgcommands", these are internal FlightGear commands implemented in C++ This can be used to implement AJAX-like server/client exchanges.
+FlightGear versions >= 2.8 include a new feature to make HTTP requests using a new xmlhttprequest fgcommand. Nasal is able to execute these so called "fgcommands", which are internal FlightGear commands implemented in C++ This can be used to implement AJAX-like server/client exchanges.
-You can pass any FG property tree data (lat,lon,alt,groundspeed etc) via conventional GET requests.
+You can pass any FG property tree data (lat,lon,alt,groundspeed etc) via conventional GET requests to the server side script.
-The request will be made asynchronously, in order not to block the main loop and affect the frame rate. This is why you should register a listener to invoke a callback upon completion of the request and check the status flag (200=OK).
+The request will be made asynchronously, in order not to block the main loop or affect the frame rate. This is why you should register a listener to invoke a callback upon completion of the request and check the status flag (200=OK).
 For further details, please see [[Howto:Making HTTP Requests from Nasal]].