urgent iOS internet issue (url request timeout setting?)
OK – I have a bit of a serious issue on iOS where if I lose wifi connectivity the first attempt to get data from a url causes problems. I’m attempting to upload a file to Dropbox (that stuff all works fine) and I do an initial test to see whether the device is online (by trying to access a url). If it is I proceed with the upload, if not I just save a local copy of the file. Anyway, the first time I do the test the request seems to take forever (minutes?) – which I don’t have (I need the request to be completed within a few seconds). The second time around is ok though. Any ideas on how I prevent this initial ‘hang’. Is it possible to set a shorter timeout or something? Terry... ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: urgent iOS internet issue (url request timeout setting?)
OK, I think I have a workaround although I’m not sure whether it is a good solution or not. If I include the line... tsNetLibUrlReuseConnection false ...in my preopenstack handler then the delay/hang seems to disappear – i.e. I get an almost immediate response if the url isn’t available. I’m not at all sure what this achieves but it seems that a new connection that can’t connect doesn’t experience the same problem as an existing connection that was previously successful. Anyway, panic averted for now but any insights into the best way to deal with this stuff would be appreciated. Terry... On 1/06/2017 11:44 am, "use-livecode on behalf of Terry Judd via use-livecode" wrote: OK – I have a bit of a serious issue on iOS where if I lose wifi connectivity the first attempt to get data from a url causes problems. I’m attempting to upload a file to Dropbox (that stuff all works fine) and I do an initial test to see whether the device is online (by trying to access a url). If it is I proceed with the upload, if not I just save a local copy of the file. Anyway, the first time I do the test the request seems to take forever (minutes?) – which I don’t have (I need the request to be completed within a few seconds). The second time around is ok though. Any ideas on how I prevent this initial ‘hang’. Is it possible to set a shorter timeout or something? Terry... ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: urgent iOS internet issue (url request timeout setting?)
Hi Terry,
I think this is the same issue as has been reported here that I am
looking into:
http://quality.livecode.com/show_bug.cgi?id=19656
At this point in time, issuing "tsNetLibUrlReuseConnection false" is the
best solution, as this will stop tsNet from trying to re-use an existing
open connection to a server.
If you are using tsNet functions directly, the equivalent option can be
set by using tSettings["no_reuse"] to true and passing that to the
function. For example:
local tHeaders, tRecvHeaders, tResult, tBytes, tSettings
put true into tSettings["no_reuse"]
put tsNetGetSync("http://www.livecode.com";, tHeaders, tRecvHeaders,
tResult, tBytes, tSettings) into tData
Best Regards,
Charles
On 1/06/2017 1:24 PM, Terry Judd via use-livecode wrote:
OK, I think I have a workaround although I’m not sure whether it is a good
solution or not.
If I include the line...
tsNetLibUrlReuseConnection false
...in my preopenstack handler then the delay/hang seems to disappear – i.e. I
get an almost immediate response if the url isn’t available. I’m not at all
sure what this achieves but it seems that a new connection that can’t connect
doesn’t experience the same problem as an existing connection that was
previously successful.
Anyway, panic averted for now but any insights into the best way to deal with
this stuff would be appreciated.
Terry...
On 1/06/2017 11:44 am, "use-livecode on behalf of Terry Judd via use-livecode"
wrote:
OK – I have a bit of a serious issue on iOS where if I lose wifi
connectivity the first attempt to get data from a url causes problems.
I’m attempting to upload a file to Dropbox (that stuff all works fine) and I do an initial test to see whether the device is online (by trying to access a url). If it is I proceed with the upload, if not I just save a local copy of the file. Anyway, the first time I do the test the request seems to take forever (minutes?) – which I don’t have (I need the request to be completed within a few seconds). The second time around is ok though.
Any ideas on how I prevent this initial ‘hang’. Is it possible to set a shorter timeout or something?
Terry...
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Re: urgent iOS internet issue (url request timeout setting?)
Thanks Charles - yep that sounds exactly the problem. I guess I should have
searched the bug database - it might have saved me some unnecessary panic.
Anyway, tsNetReuseConnection false seems to work just fine for now. When I have
some more time I'll delve into the tsNet commands a bit more and switch to
using some of the asynchronous functions.
Regards,
Terry...
Sent from my iPad
> On 1 Jun 2017, at 7:48 pm, Charles Warwick via use-livecode
> wrote:
>
> Hi Terry,
>
> I think this is the same issue as has been reported here that I am looking
> into:
>
> http://quality.livecode.com/show_bug.cgi?id=19656
>
> At this point in time, issuing "tsNetLibUrlReuseConnection false" is the best
> solution, as this will stop tsNet from trying to re-use an existing open
> connection to a server.
>
> If you are using tsNet functions directly, the equivalent option can be set
> by using tSettings["no_reuse"] to true and passing that to the function. For
> example:
>
> local tHeaders, tRecvHeaders, tResult, tBytes, tSettings
> put true into tSettings["no_reuse"]
> put tsNetGetSync("http://www.livecode.com";, tHeaders, tRecvHeaders, tResult,
> tBytes, tSettings) into tData
>
> Best Regards,
>
> Charles
>
>
>
>> On 1/06/2017 1:24 PM, Terry Judd via use-livecode wrote:
>> OK, I think I have a workaround although I’m not sure whether it is a good
>> solution or not.
>>
>> If I include the line...
>>
>> tsNetLibUrlReuseConnection false
>>
>> ...in my preopenstack handler then the delay/hang seems to disappear – i.e.
>> I get an almost immediate response if the url isn’t available. I’m not at
>> all sure what this achieves but it seems that a new connection that can’t
>> connect doesn’t experience the same problem as an existing connection that
>> was previously successful.
>>
>> Anyway, panic averted for now but any insights into the best way to deal
>> with this stuff would be appreciated.
>>
>> Terry...
>>
>>
>>
>> On 1/06/2017 11:44 am, "use-livecode on behalf of Terry Judd via
>> use-livecode" > use-livecode@lists.runrev.com> wrote:
>>
>> OK – I have a bit of a serious issue on iOS where if I lose wifi
>> connectivity the first attempt to get data from a url causes problems.
>> I’m attempting to upload a file to Dropbox (that stuff all works
>> fine) and I do an initial test to see whether the device is online (by
>> trying to access a url). If it is I proceed with the upload, if not I just
>> save a local copy of the file. Anyway, the first time I do the test the
>> request seems to take forever (minutes?) – which I don’t have (I need the
>> request to be completed within a few seconds). The second time around is ok
>> though.
>> Any ideas on how I prevent this initial ‘hang’. Is it possible to
>> set a shorter timeout or something?
>> Terry...
>> ___
>> use-livecode mailing list
>> use-livecode@lists.runrev.com
>> Please visit this url to subscribe, unsubscribe and manage your
>> subscription preferences:
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>>
>> ___
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>> preferences:
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>
>
> ___
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> preferences:
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Re: urgent iOS internet issue (url request timeout setting?)
Not to say that TSnet bug doesn't also exist but What iOS version? your problem is an exact mirror of issues I'm having here in the shop with my iPhone 7+ and after a recent upgrade … completley unrelated to Livecode. But our netadmin keeps saying "your wireless hubs in the office look fine to us…" meanwhile I'm having that same exact experience (some others too) Wifi shows all bars some latency next moment, no wifi go for another URL in Safari… phone switchs and stays on LTE (I am standing directly infront of the hub which is connected by the ethernet) Our tech here says admin says, "Oh yeah… go to settings → General → and do a Reset Network settings… that usually fixes it." And we are wailing that there is something wrong with the Meraki (wireless) devices. could be other bad apples in the barrel besides TSnet's reuse connection issue. but maybe it is iOS? On 5/31/17, 3:44 PM, "use-livecode on behalf of Terry Judd via use-livecode" wrote: OK – I have a bit of a serious issue on iOS where if I lose wifi connectivity the first attempt to get data from a url causes problems. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
Re: urgent iOS internet issue (url request timeout setting?)
In this case the loss of wifi was intentional and part of a test of offline capability of our app. We do experience occasional loss of wifi on our iPads but I suspect that is down to our university’s wireless network rather than a technical issue with the devices. Terry... On 4/06/2017 11:50 am, "use-livecode on behalf of Sannyasin Brahmanathaswami via use-livecode" wrote: Not to say that TSnet bug doesn't also exist but What iOS version? your problem is an exact mirror of issues I'm having here in the shop with my iPhone 7+ and after a recent upgrade … completley unrelated to Livecode. But our netadmin keeps saying "your wireless hubs in the office look fine to us…" meanwhile I'm having that same exact experience (some others too) Wifi shows all bars some latency next moment, no wifi go for another URL in Safari… phone switchs and stays on LTE (I am standing directly infront of the hub which is connected by the ethernet) Our tech here says admin says, "Oh yeah… go to settings → General → and do a Reset Network settings… that usually fixes it." And we are wailing that there is something wrong with the Meraki (wireless) devices. could be other bad apples in the barrel besides TSnet's reuse connection issue. but maybe it is iOS? On 5/31/17, 3:44 PM, "use-livecode on behalf of Terry Judd via use-livecode" wrote: OK – I have a bit of a serious issue on iOS where if I lose wifi connectivity the first attempt to get data from a url causes problems. ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode ___ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
