Maybe not 100% reliable but ....
https://stackoverflow.com/questions/1341089/using-meta-tags-to-turn-off-caching-in-all-browsers
Regards Lagi
On 16 March 2018 at 09:48, Charles Warwick via use-livecode
<use-livecode@lists.runrev.com> wrote:
> Hi Tom,
>
> If the site you are trying to contact has CORS enabled appropriately, then
> you can do something like this...
>
> With the LiveCode browser widget, you can call JavaScript functions from LC
> script and have the JavaScript functions call LC handlers in return.
> JavaScript has the capability to perform asynchronous HTTP requests.
>
> You can create a HTML page that you automatically load up in the browser
> widget that has a small JavaScript function which you can call from LC with
> ‘do in widget’. All this function needs to do is issue an asynchronous HTTP
> call to the URL passed to it as a parameter and when it receives the data,
> return it back to your LC script by calling a nominated LC handler and
> passing the returned data as a parameter.
>
> The HTML page would look something like this:
>
> <html>
> <head>
> <title>Javascript Async Test</title>
> <script type="text/javascript">
>
> function httpGetAsync(theUrl)
> {
> var xmlHttp = new XMLHttpRequest();
> xmlHttp.onreadystatechange = function() {
> if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
> liveCode.httpRequestComplete(theUrl, xmlHttp.responseText);
> }
> xmlHttp.open("GET", theUrl, true); // true for asynchronous
> xmlHttp.send(null);
> }
> </script>
> </head>
> <body>
> </body>
> <html>
>
> You can either load that from a file into the browser widget’s URL or set its
> htmlText property accordingly...
>
> Then in LC, make sure you register the httpRequestComplete handler so that
> the widget can call it:
>
> set the javascriptHandlers of widget “browser” to “httpRequestComplete”
>
> After that, add a httpRequestComplete handler to the card script to handle
> the returned data:
>
> on httpRequestComplete pUrl, pData
> — pUrl will be the URL requested
> — pData will be the data returned from the URL requested
> end httpRequestComplete
>
> Lastly, make your async requests....
>
> do (“httpGetAsync(‘http://www.livecode.com’);” in widget “browser”
>
> Since the JavaScript in the browser widget is issuing the requests and
> sending the data back to LC, it doesn’t need to display anything related to
> it in the browser widget itself - it can be a blank canvas.
>
> Just be aware that the browser widget can cache URLs and there is no easy way
> (that I know of?) in LC to clear the browser’s cache... so if you see very
> quick responses on a second or subsequent request to the same URL, it is
> likely pulling it all from the browser’s cache.
>
> Cheers,
>
> Charles
>
>>> On 16 Mar 2018, at 1:35 pm, Tom Glod via use-livecode
>>> <use-livecode@lists.runrev.com> wrote:
>>>
>>> Great hints there Mike .... thanks alot. Luckily I'm desktop only right
>>> now.
>>>
>>> It shouldn't be too long before I sit down to make something that I can
>>> rely on and reuse in future projects.
>>>
>>> Might turn out I will have to hire someone to help which is cool too.
>>>
>>> It only has to be very simple..and does not need to match performance of
>>> Tsnet.
>>>
>>> Anything more than 1 would be a great start. LOL.
>>>
>>> I will look into the libURL library and then try to guess which way I
>>> should go my first attempt to hack this.
>>>
>>> I'll keep you guys posted on the progress..I think I need a name for this
>>> little project.
>>>
>>> Thanks you
>>>
>>> Tom
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