Not sure what to do.....can I run this by you guys?

Rick Harrison harrison at all-auctions.com
Fri Mar 16 18:43:11 CET 2018


Hi Mike,

I am in a testing phase right now for deployment
to others later, so disabling safari for myself isn’t
going to accomplish much.

I will look into setting the headers directly.

Thanks,

Rick

> On Mar 16, 2018, at 11:31 AM, Mike Bonner via use-livecode <use-livecode at lists.runrev.com> wrote:
> 
> Yeah, thats what I was talking about, but I never tried it with safari i'm
> afraid. Sounds like something funky with safari, though i'm not sure why my
> method wouldn't work unless safari is smart enough now to recognize an
> inline link and NOT treat it as a new URL to cache.
> 
> If this is only for your personal use, you can disable caching on safari as
> described here: https://www.technipages.com/apple-safari-completely-
> disable-cache
> If you have safari 11, check here instead to disable cache:
> https://stackoverflow.com/questions/46324675/how-do-
> i-disable-cache-in-safari-11-0
> 
> If this is for an app being shipped though thats not a solution.  You said
> firefox works fine, so i'm guessing you don't have some type of caching
> proxy between you and the server.  Either way, from what I've been reading
> just now, rather than using meta tags, you're more likely to get the
> desired result if you set the headers directly.  One way to do this would
> be with an .htaccess file.
> https://stackoverflow.com/questions/11532636/how-to-prevent-http-file-caching-in-apache-httpd-mamp
> You'd need to add .lc to the filesmatch so that they're not cached.
> 
> Hopefully the correct module is installed. If it isn't, while I've never
> done it, I believe you can set the headers to return using lc in your
> server script (assuming you're using lc.) I know php can.  If you're using
> something other than apache of course, ignore the above.
> 
> On Fri, Mar 16, 2018 at 8:53 AM, Rick Harrison via use-livecode <
> use-livecode at lists.runrev.com> wrote:
> 
>> Hi Mike,
>> 
>> I am finding that Safari is not honoring
>> the meta tag to turn off caching.  I thought
>> I would give your method a try.  I’m not
>> sure I am doing it right though because
>> that isn’t working either.
>> 
>> (Firefox does everything properly.)
>> 
>> I was thinking from your description that
>> it would look something like:
>> 
>> http://www.yourwebsite.com/coolpage.lc#48432 <http://www.yourwebsite.com/
>> coolpage.lc#48432>
>> 
>> Is the above example of what you are discussing
>> correct?  If not could you please post an example?
>> 
>> Thanks,
>> 
>> Rick
>> 
>>> On Mar 16, 2018, at 9:31 AM, Mike Bonner via use-livecode <
>> use-livecode at lists.runrev.com> wrote:
>>> 
>>> Another way around the cache problem is to use the #2 trick at the end of
>>> the url.  Send each request with a pound and different number at the end
>> of
>>> the url and it'll be seen as a new request thus doing an end run around
>> the
>>> cache.  Since it designates an inline anchor position on the page, it
>>> should have zero affect on the way the url functions.  (unless things
>> have
>>> changed, the associated anchor doesn't need to exist on the page)
>>> 
>>> Thanks for the neat trick Charles. :)
>>> 
>>> On Fri, Mar 16, 2018 at 7:24 AM, Tom Glod via use-livecode <
>>> use-livecode at lists.runrev.com> wrote:
>>> 
>>>> Wow....I'm impressed....thats quite a hack Charles..I will study all
>> this
>>>> see how far I get.....
>>>> 
>>>> Thank you gentlemen....you are Rockstars!!
>>>> 
>>>> On Fri, Mar 16, 2018 at 7:13 AM, Lagi Pittas via use-livecode <
>>>> use-livecode at lists.runrev.com> wrote:
>>>> 
>>>>> 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 at 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 at 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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