URL function fails on http requests, results in "invalid host address", other internet functions work correctly

[kee nethery]

Within the past many months I've had URLs not acquire an IP address on the first try. When I retry, they acquire the IP. I've thought it was our DNS being slow to respond. I've thought perhaps it was my machine being impatient with DNS lookups. It occurs to me that mostly it is when my LiveCode app is trying to look up a DNS entry to grab a config file to ensure it is the latest code running. Could be the livecode DNS lookup routine is impatient. Could be it should be waiting a tad longer for a DNS response and it isn't. Might be a bug in LiveCode.

Just a thought,
Kee Nethery



On Nov 19, 2012, at 12:14 PM, Gabriel Johnson <gwjapp at gmail.com> wrote:

> Hi All,
> 
> We are having a baffling problem with the standard URL function not working
> on one of our machines.
> 
> Message Box Example:
> 
>   put url "http://www.google.com"
> 
> returns empty.
> 
> 
> If altered slightly to give more feedback, then:
> 
>   put url "http://www.google.com" into htmlText; put the result
> 
> returns "invalid host address" in the message box.
> 
> 
> Here are some things we've tried and the results:
> 
> 1. Other internet applications run fine on the computer. Firefox/Safari
> load www.google.com just fine
> 2. Older versions of LiveCode, which had previously worked, now fail with
> the url command
> 3. Creating a dummy user account and running LiveCode fresh causes the url
> command to work
> 4. Other LiveCode internet commands/functions work
> fine: hostnametoaddress(), liburl functions
> 5. Zapping the PRAM caused the url function to work one of the times we
> tried it, for a limited period of time.
> 
> So, it seems to be something very specific to the url function (at least
> with http requests) on this one user account that is failing. It appears it
> might be something corrupt in the user library. A first thought we had was
> to remove all LiveCode items from the user Library and start from scratch
> on the original user account. However, I'm not sure if we removed
> everything. We removed the "RunRev" folder from Application Support, and
> the following 4 preference files: com.runrev.livecode.plist,
> com.runrev.revinstaller.plist, com.runrev.revolution.plist,
> com.runrev.revolution.plist.saved.
> Are there some other items from the user Library/etc we need to remove to
> completely uninstall LiveCode from the original user account?
> 
> Does anyone know any more about the http url function in general? Is there
> some other process/function in sits on top of that I could look at to
> figure out why this specific user account causes it to fail?
> 
> Thanks
> 
> Gabe
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