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Posted to dev@flex.apache.org by Avinash Narayanan <av...@gmail.com> on 2012/03/28 10:16:06 UTC
SFTP file transfer for large files using flex
Hi All,
I know this community is meant for future development of Apache Flex but
I'm a little lost here. I need to upload ~2Gb file from my local machine to
a url via an air app using sftp. problem is we don't have sftp lib
available.
Also, I'm confused as to why in forums it says the flash player needs to
take the entire file into memory before loading it but I don't see any
memory increase in my task manager (using the fileReference class).
Another thing I wanted to know is how best to split up the file into chunks
for multi-part loading? Any help in any of these areas will be supremely
helpful!
I've already seen the following links
http://www.actionscript.org/forums/showthread.php3?t=181895
http://forums.adobe.com/thread/631103
http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
http://maliboo.pl/projects/FlexFTP/
http://forums.adobe.com/thread/245294
http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
Thanks in Advance.
With Warm Regards,
Avinash
Re: SFTP file transfer for large files using flex
Posted by sébastien Paturel <se...@gmail.com>.
+1
Le 28/03/2012 19:34, Marcus Fritze a écrit :
> Hi,
>
> as maybe all know Flash supports only a file size of 100MB.
>
> from the docs:
>
> FileReference -> upload()
>
>> Although Flash Player has no restriction on the size of files you can upload or download, the player officially supports uploads or downloads of up to 100 MB.
> I experienced that an upload / download of a larger file via Flash (FileReference) is possible.
>
> I agree with Avinash! I think this is a good place to discuss this topic (and not the stack overflow forum). Because this mailing list is the place where we can improve the Flex SDK / Flash.
>
> Correct me if I am wrong, but an upload of large files (2 GB or more) is currently not possible in Flash. And maybe we can check if it is possible to enable a larger file upload / download via Flex / Flash. This feature is very useful for Enterprise RIA's. I have already developed such an app and have the same problem.
>
> Thanks!
>
> Marcus
>
> Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
>
>> Hi JP,
>>
>> Thanks for taking time to reply! Stackoverflow had questions like this but
>> not satisfactory answers. This was my last ditch effort since the other
>> option is to write my own SFTP plug (which clients wont pay me to do :|).
>>
>> As for the apps, this upload needs to be 'part' of a desktop application
>> written in adobe air so can't use any of these other tools :(
>>
>> Thanks
>> Avinash Y
>>
>>
>> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader<jp...@zavteq.com> wrote:
>>
>>> Hi Avinash,
>>>
>>> My quick take on this is why you would want to recreate a tool for
>>> this? Aren't there plenty of free SFTP apps already? Why not take
>>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>>>
>>> Also, questions like these might be better asked on other forums like
>>> stack overflow. This mailing list is for questions and development
>>> regarding the next release of Flex.
>>>
>>> Regards,
>>>
>>> JP
>>>
>>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
>>> <av...@gmail.com> wrote:
>>>> Hi All,
>>>>
>>>> I know this community is meant for future development of Apache Flex but
>>>> I'm a little lost here. I need to upload ~2Gb file from my local machine
>>> to
>>>> a url via an air app using sftp. problem is we don't have sftp lib
>>>> available.
>>>>
>>>> Also, I'm confused as to why in forums it says the flash player needs to
>>>> take the entire file into memory before loading it but I don't see any
>>>> memory increase in my task manager (using the fileReference class).
>>>>
>>>> Another thing I wanted to know is how best to split up the file into
>>> chunks
>>>> for multi-part loading? Any help in any of these areas will be supremely
>>>> helpful!
>>>>
>>>> I've already seen the following links
>>>>
>>>> http://www.actionscript.org/forums/showthread.php3?t=181895
>>>> http://forums.adobe.com/thread/631103
>>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
>>>> http://maliboo.pl/projects/FlexFTP/
>>>> http://forums.adobe.com/thread/245294
>>>>
>>> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>>>> Thanks in Advance.
>>>>
>>>>
>>>> With Warm Regards,
>>>> Avinash
>>>
>>>
>>> --
>>> JP Bader
>>> Principal
>>> Zavteq, Inc.
>>> @lordB8r | jp@zavteq.com
>>> 608.692.2468
>>>
Re: SFTP file transfer for large files using flex
Posted by Ariel Jakobovits <ar...@yahoo.com>.
> I might be off, but I don't think an ANE is, or would be, part of Flex. It is an extension for AIR.
Flex has components intended only for AIR (such as FileSystemList), and offering a component that exists as an ANE/AS combo that can be added to a project to upload large files does not seem out of the scope of Flex.
Ariel Jakobovits
Email: arieljake@yahoo.com
Phone: 650-690-2213
Fax: 650-641-0031
Cell: 650-823-8699
________________________________
From: JP Bader <jp...@zavteq.com>
To: flex-dev@incubator.apache.org; Ariel Jakobovits <ar...@yahoo.com>
Sent: Wednesday, March 28, 2012 12:04 PM
Subject: Re: SFTP file transfer for large files using flex
I might be off, but I don't think an ANE is, or would be, part of
Flex. It is an extension for AIR, which is still controlled by Adobe.
If we want to see about spawning new threads that could consume a
massive dump of data files, process, and pass those into a service
(FTP/SFTP/REST/Telnet/etc), that seems like a bit outside of scope of
the Flex project, and more in line w/ Tamarin.
We are working on the framework, which currently has limitations to
the FP and AIR (which are Adobe). Potentially once we have access to
Falcon(JS), there might be alternatives, but my question is, what 2GB
file are you trying to have FP/AIR upload? There might be some tricks
to chunking out the flow of data using byte arrays, and clearing them
out as you go along with loading them to whatever repository/location
you need, but I can't think of too many desktop applications that will
not just freeze up when you load a 2GB (or any major file) into it.
For video, that's one thing, but beyond a certain size, and normally
the machine itself will slow down/become unresponsive.
Most enterprises where I have done work, accessing and uploading
massive amounts of data would be FTP via terminals or clients, not
through a separate app (especially not AIR). Maybe I'm missing the
reason behind wanting FP/AIR to handle that much data, but given the
limitations of FP/AIR for processing data, I am not sure how you would
approach building that into the framework. I guess examples of
BigAssCanvas show that you could stitch together large files (larger
than FP would allow), but once you get to a certain size, it becomes
unresponsive.
If there is a way to do it, I apologize for going off tangent, but we
need to focus on getting bugs fixed and improving the framework first,
and I'm not sure this is an improvement of the current framework so
much as a nice feature request.
Regards,
On Wed, Mar 28, 2012 at 1:14 PM, Ariel Jakobovits <ar...@yahoo.com> wrote:
> would we consider developing ANEs to incorporate into Flex?
>
> Ariel Jakobovits
> Email: arieljake@yahoo.com
> Phone: 650-690-2213
> Fax: 650-641-0031
> Cell: 650-823-8699
>
>
> ________________________________
> From: Marcus Fritze <ma...@googlemail.com>
> To: flex-dev@incubator.apache.org; Marcus Fritze <ma...@googlemail.com>
> Sent: Wednesday, March 28, 2012 10:34 AM
> Subject: Re: SFTP file transfer for large files using flex
>
> Hi,
>
> as maybe all know Flash supports only a file size of 100MB.
>
> from the docs:
>
> FileReference -> upload()
>
>> Although Flash Player has no restriction on the size of files you can upload or download, the player officially supports uploads or downloads of up to 100 MB.
>
> I experienced that an upload / download of a larger file via Flash (FileReference) is possible.
>
> I agree with Avinash! I think this is a good place to discuss this topic (and not the stack overflow forum). Because this mailing list is the place where we can improve the Flex SDK / Flash.
>
> Correct me if I am wrong, but an upload of large files (2 GB or more) is currently not possible in Flash. And maybe we can check if it is possible to enable a larger file upload / download via Flex / Flash. This feature is very useful for Enterprise RIA's. I have already developed such an app and have the same problem.
>
> Thanks!
>
> Marcus
>
> Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
>
>> Hi JP,
>>
>> Thanks for taking time to reply! Stackoverflow had questions like this but
>> not satisfactory answers. This was my last ditch effort since the other
>> option is to write my own SFTP plug (which clients wont pay me to do :|).
>>
>> As for the apps, this upload needs to be 'part' of a desktop application
>> written in adobe air so can't use any of these other tools :(
>>
>> Thanks
>> Avinash Y
>>
>>
>> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
>>
>>> Hi Avinash,
>>>
>>> My quick take on this is why you would want to recreate a tool for
>>> this? Aren't there plenty of free SFTP apps already? Why not take
>>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>>>
>>> Also, questions like these might be better asked on other forums like
>>> stack overflow. This mailing list is for questions and development
>>> regarding the next release of Flex.
>>>
>>> Regards,
>>>
>>> JP
>>>
>>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
>>> <av...@gmail.com> wrote:
>>>> Hi All,
>>>>
>>>> I know this community is meant for future development of Apache Flex but
>>>> I'm a little lost here. I need to upload ~2Gb file from my local machine
>>> to
>>>> a url via an air app using sftp. problem is we don't have sftp lib
>>>> available.
>>>>
>>>> Also, I'm confused as to why in forums it says the flash player needs to
>>>> take the entire file into memory before loading it but I don't see any
>>>> memory increase in my task manager (using the fileReference class).
>>>>
>>>> Another thing I wanted to know is how best to split up the file into
>>> chunks
>>>> for multi-part loading? Any help in any of these areas will be supremely
>>>> helpful!
>>>>
>>>> I've already seen the following links
>>>>
>>>> http://www.actionscript.org/forums/showthread.php3?t=181895
>>>> http://forums.adobe.com/thread/631103
>>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
>>>> http://maliboo.pl/projects/FlexFTP/
>>>> http://forums.adobe.com/thread/245294
>>>>
>>> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>>>>
>>>> Thanks in Advance.
>>>>
>>>>
>>>> With Warm Regards,
>>>> Avinash
>>>
>>>
>>>
>>> --
>>> JP Bader
>>> Principal
>>> Zavteq, Inc.
>>> @lordB8r | jp@zavteq.com
>>> 608.692.2468
>>>
--
JP Bader
Principal
Zavteq, Inc.
@lordB8r | jp@zavteq.com
608.692.2468
Re: SFTP file transfer for large files using flex
Posted by eRoom-D <er...@gmail.com>.
First post here, but since I just wrote a file upload section for an
enterprise application I thought I might be able to shed a little more
light on the issue.
Flash player can upload more than 100Mb at a time, though as was mentioned
earlier only 100Mb is officially supported.
The other issue, that Avinash Y may be running into is a server side
limitation on uploads. I know that for our Java server we needed to have
it's configuration changed to allow larger files uploaded. If that isn't
changed, then the server has it's own timeouts that file uploads would run
into and the larger files would fail during the upload.
Thanks,
David
Flash and Flex Developer - http://vandermore.com
On Wed, Mar 28, 2012 at 2:04 PM, JP Bader <jp...@zavteq.com> wrote:
> I might be off, but I don't think an ANE is, or would be, part of
> Flex. It is an extension for AIR, which is still controlled by Adobe.
> If we want to see about spawning new threads that could consume a
> massive dump of data files, process, and pass those into a service
> (FTP/SFTP/REST/Telnet/etc), that seems like a bit outside of scope of
> the Flex project, and more in line w/ Tamarin.
>
> We are working on the framework, which currently has limitations to
> the FP and AIR (which are Adobe). Potentially once we have access to
> Falcon(JS), there might be alternatives, but my question is, what 2GB
> file are you trying to have FP/AIR upload? There might be some tricks
> to chunking out the flow of data using byte arrays, and clearing them
> out as you go along with loading them to whatever repository/location
> you need, but I can't think of too many desktop applications that will
> not just freeze up when you load a 2GB (or any major file) into it.
> For video, that's one thing, but beyond a certain size, and normally
> the machine itself will slow down/become unresponsive.
>
> Most enterprises where I have done work, accessing and uploading
> massive amounts of data would be FTP via terminals or clients, not
> through a separate app (especially not AIR). Maybe I'm missing the
> reason behind wanting FP/AIR to handle that much data, but given the
> limitations of FP/AIR for processing data, I am not sure how you would
> approach building that into the framework. I guess examples of
> BigAssCanvas show that you could stitch together large files (larger
> than FP would allow), but once you get to a certain size, it becomes
> unresponsive.
>
> If there is a way to do it, I apologize for going off tangent, but we
> need to focus on getting bugs fixed and improving the framework first,
> and I'm not sure this is an improvement of the current framework so
> much as a nice feature request.
>
> Regards,
>
> On Wed, Mar 28, 2012 at 1:14 PM, Ariel Jakobovits <ar...@yahoo.com>
> wrote:
> > would we consider developing ANEs to incorporate into Flex?
> >
> > Ariel Jakobovits
> > Email: arieljake@yahoo.com
> > Phone: 650-690-2213
> > Fax: 650-641-0031
> > Cell: 650-823-8699
> >
> >
> > ________________________________
> > From: Marcus Fritze <ma...@googlemail.com>
> > To: flex-dev@incubator.apache.org; Marcus Fritze <
> marcus.fritze@googlemail.com>
> > Sent: Wednesday, March 28, 2012 10:34 AM
> > Subject: Re: SFTP file transfer for large files using flex
> >
> > Hi,
> >
> > as maybe all know Flash supports only a file size of 100MB.
> >
> > from the docs:
> >
> > FileReference -> upload()
> >
> >> Although Flash Player has no restriction on the size of files you can
> upload or download, the player officially supports uploads or downloads of
> up to 100 MB.
> >
> > I experienced that an upload / download of a larger file via Flash
> (FileReference) is possible.
> >
> > I agree with Avinash! I think this is a good place to discuss this topic
> (and not the stack overflow forum). Because this mailing list is the place
> where we can improve the Flex SDK / Flash.
> >
> > Correct me if I am wrong, but an upload of large files (2 GB or more) is
> currently not possible in Flash. And maybe we can check if it is possible
> to enable a larger file upload / download via Flex / Flash. This feature is
> very useful for Enterprise RIA's. I have already developed such an app and
> have the same problem.
> >
> > Thanks!
> >
> > Marcus
> >
> > Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
> >
> >> Hi JP,
> >>
> >> Thanks for taking time to reply! Stackoverflow had questions like this
> but
> >> not satisfactory answers. This was my last ditch effort since the other
> >> option is to write my own SFTP plug (which clients wont pay me to do
> :|).
> >>
> >> As for the apps, this upload needs to be 'part' of a desktop application
> >> written in adobe air so can't use any of these other tools :(
> >>
> >> Thanks
> >> Avinash Y
> >>
> >>
> >> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
> >>
> >>> Hi Avinash,
> >>>
> >>> My quick take on this is why you would want to recreate a tool for
> >>> this? Aren't there plenty of free SFTP apps already? Why not take
> >>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
> >>>
> >>> Also, questions like these might be better asked on other forums like
> >>> stack overflow. This mailing list is for questions and development
> >>> regarding the next release of Flex.
> >>>
> >>> Regards,
> >>>
> >>> JP
> >>>
> >>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
> >>> <av...@gmail.com> wrote:
> >>>> Hi All,
> >>>>
> >>>> I know this community is meant for future development of Apache Flex
> but
> >>>> I'm a little lost here. I need to upload ~2Gb file from my local
> machine
> >>> to
> >>>> a url via an air app using sftp. problem is we don't have sftp lib
> >>>> available.
> >>>>
> >>>> Also, I'm confused as to why in forums it says the flash player needs
> to
> >>>> take the entire file into memory before loading it but I don't see any
> >>>> memory increase in my task manager (using the fileReference class).
> >>>>
> >>>> Another thing I wanted to know is how best to split up the file into
> >>> chunks
> >>>> for multi-part loading? Any help in any of these areas will be
> supremely
> >>>> helpful!
> >>>>
> >>>> I've already seen the following links
> >>>>
> >>>> http://www.actionscript.org/forums/showthread.php3?t=181895
> >>>> http://forums.adobe.com/thread/631103
> >>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
> >>>> http://maliboo.pl/projects/FlexFTP/
> >>>> http://forums.adobe.com/thread/245294
> >>>>
> >>>
> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
> >>>>
> >>>> Thanks in Advance.
> >>>>
> >>>>
> >>>> With Warm Regards,
> >>>> Avinash
> >>>
> >>>
> >>>
> >>> --
> >>> JP Bader
> >>> Principal
> >>> Zavteq, Inc.
> >>> @lordB8r | jp@zavteq.com
> >>> 608.692.2468
> >>>
>
>
>
> --
> JP Bader
> Principal
> Zavteq, Inc.
> @lordB8r | jp@zavteq.com
> 608.692.2468
>
Re: SFTP file transfer for large files using flex
Posted by JP Bader <jp...@zavteq.com>.
I might be off, but I don't think an ANE is, or would be, part of
Flex. It is an extension for AIR, which is still controlled by Adobe.
If we want to see about spawning new threads that could consume a
massive dump of data files, process, and pass those into a service
(FTP/SFTP/REST/Telnet/etc), that seems like a bit outside of scope of
the Flex project, and more in line w/ Tamarin.
We are working on the framework, which currently has limitations to
the FP and AIR (which are Adobe). Potentially once we have access to
Falcon(JS), there might be alternatives, but my question is, what 2GB
file are you trying to have FP/AIR upload? There might be some tricks
to chunking out the flow of data using byte arrays, and clearing them
out as you go along with loading them to whatever repository/location
you need, but I can't think of too many desktop applications that will
not just freeze up when you load a 2GB (or any major file) into it.
For video, that's one thing, but beyond a certain size, and normally
the machine itself will slow down/become unresponsive.
Most enterprises where I have done work, accessing and uploading
massive amounts of data would be FTP via terminals or clients, not
through a separate app (especially not AIR). Maybe I'm missing the
reason behind wanting FP/AIR to handle that much data, but given the
limitations of FP/AIR for processing data, I am not sure how you would
approach building that into the framework. I guess examples of
BigAssCanvas show that you could stitch together large files (larger
than FP would allow), but once you get to a certain size, it becomes
unresponsive.
If there is a way to do it, I apologize for going off tangent, but we
need to focus on getting bugs fixed and improving the framework first,
and I'm not sure this is an improvement of the current framework so
much as a nice feature request.
Regards,
On Wed, Mar 28, 2012 at 1:14 PM, Ariel Jakobovits <ar...@yahoo.com> wrote:
> would we consider developing ANEs to incorporate into Flex?
>
> Ariel Jakobovits
> Email: arieljake@yahoo.com
> Phone: 650-690-2213
> Fax: 650-641-0031
> Cell: 650-823-8699
>
>
> ________________________________
> From: Marcus Fritze <ma...@googlemail.com>
> To: flex-dev@incubator.apache.org; Marcus Fritze <ma...@googlemail.com>
> Sent: Wednesday, March 28, 2012 10:34 AM
> Subject: Re: SFTP file transfer for large files using flex
>
> Hi,
>
> as maybe all know Flash supports only a file size of 100MB.
>
> from the docs:
>
> FileReference -> upload()
>
>> Although Flash Player has no restriction on the size of files you can upload or download, the player officially supports uploads or downloads of up to 100 MB.
>
> I experienced that an upload / download of a larger file via Flash (FileReference) is possible.
>
> I agree with Avinash! I think this is a good place to discuss this topic (and not the stack overflow forum). Because this mailing list is the place where we can improve the Flex SDK / Flash.
>
> Correct me if I am wrong, but an upload of large files (2 GB or more) is currently not possible in Flash. And maybe we can check if it is possible to enable a larger file upload / download via Flex / Flash. This feature is very useful for Enterprise RIA's. I have already developed such an app and have the same problem.
>
> Thanks!
>
> Marcus
>
> Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
>
>> Hi JP,
>>
>> Thanks for taking time to reply! Stackoverflow had questions like this but
>> not satisfactory answers. This was my last ditch effort since the other
>> option is to write my own SFTP plug (which clients wont pay me to do :|).
>>
>> As for the apps, this upload needs to be 'part' of a desktop application
>> written in adobe air so can't use any of these other tools :(
>>
>> Thanks
>> Avinash Y
>>
>>
>> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
>>
>>> Hi Avinash,
>>>
>>> My quick take on this is why you would want to recreate a tool for
>>> this? Aren't there plenty of free SFTP apps already? Why not take
>>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>>>
>>> Also, questions like these might be better asked on other forums like
>>> stack overflow. This mailing list is for questions and development
>>> regarding the next release of Flex.
>>>
>>> Regards,
>>>
>>> JP
>>>
>>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
>>> <av...@gmail.com> wrote:
>>>> Hi All,
>>>>
>>>> I know this community is meant for future development of Apache Flex but
>>>> I'm a little lost here. I need to upload ~2Gb file from my local machine
>>> to
>>>> a url via an air app using sftp. problem is we don't have sftp lib
>>>> available.
>>>>
>>>> Also, I'm confused as to why in forums it says the flash player needs to
>>>> take the entire file into memory before loading it but I don't see any
>>>> memory increase in my task manager (using the fileReference class).
>>>>
>>>> Another thing I wanted to know is how best to split up the file into
>>> chunks
>>>> for multi-part loading? Any help in any of these areas will be supremely
>>>> helpful!
>>>>
>>>> I've already seen the following links
>>>>
>>>> http://www.actionscript.org/forums/showthread.php3?t=181895
>>>> http://forums.adobe.com/thread/631103
>>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
>>>> http://maliboo.pl/projects/FlexFTP/
>>>> http://forums.adobe.com/thread/245294
>>>>
>>> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>>>>
>>>> Thanks in Advance.
>>>>
>>>>
>>>> With Warm Regards,
>>>> Avinash
>>>
>>>
>>>
>>> --
>>> JP Bader
>>> Principal
>>> Zavteq, Inc.
>>> @lordB8r | jp@zavteq.com
>>> 608.692.2468
>>>
--
JP Bader
Principal
Zavteq, Inc.
@lordB8r | jp@zavteq.com
608.692.2468
Re: SFTP file transfer for large files using flex
Posted by Ariel Jakobovits <ar...@yahoo.com>.
would we consider developing ANEs to incorporate into Flex?
Ariel Jakobovits
Email: arieljake@yahoo.com
Phone: 650-690-2213
Fax: 650-641-0031
Cell: 650-823-8699
________________________________
From: Marcus Fritze <ma...@googlemail.com>
To: flex-dev@incubator.apache.org; Marcus Fritze <ma...@googlemail.com>
Sent: Wednesday, March 28, 2012 10:34 AM
Subject: Re: SFTP file transfer for large files using flex
Hi,
as maybe all know Flash supports only a file size of 100MB.
from the docs:
FileReference -> upload()
> Although Flash Player has no restriction on the size of files you can upload or download, the player officially supports uploads or downloads of up to 100 MB.
I experienced that an upload / download of a larger file via Flash (FileReference) is possible.
I agree with Avinash! I think this is a good place to discuss this topic (and not the stack overflow forum). Because this mailing list is the place where we can improve the Flex SDK / Flash.
Correct me if I am wrong, but an upload of large files (2 GB or more) is currently not possible in Flash. And maybe we can check if it is possible to enable a larger file upload / download via Flex / Flash. This feature is very useful for Enterprise RIA's. I have already developed such an app and have the same problem.
Thanks!
Marcus
Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
> Hi JP,
>
> Thanks for taking time to reply! Stackoverflow had questions like this but
> not satisfactory answers. This was my last ditch effort since the other
> option is to write my own SFTP plug (which clients wont pay me to do :|).
>
> As for the apps, this upload needs to be 'part' of a desktop application
> written in adobe air so can't use any of these other tools :(
>
> Thanks
> Avinash Y
>
>
> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
>
>> Hi Avinash,
>>
>> My quick take on this is why you would want to recreate a tool for
>> this? Aren't there plenty of free SFTP apps already? Why not take
>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>>
>> Also, questions like these might be better asked on other forums like
>> stack overflow. This mailing list is for questions and development
>> regarding the next release of Flex.
>>
>> Regards,
>>
>> JP
>>
>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
>> <av...@gmail.com> wrote:
>>> Hi All,
>>>
>>> I know this community is meant for future development of Apache Flex but
>>> I'm a little lost here. I need to upload ~2Gb file from my local machine
>> to
>>> a url via an air app using sftp. problem is we don't have sftp lib
>>> available.
>>>
>>> Also, I'm confused as to why in forums it says the flash player needs to
>>> take the entire file into memory before loading it but I don't see any
>>> memory increase in my task manager (using the fileReference class).
>>>
>>> Another thing I wanted to know is how best to split up the file into
>> chunks
>>> for multi-part loading? Any help in any of these areas will be supremely
>>> helpful!
>>>
>>> I've already seen the following links
>>>
>>> http://www.actionscript.org/forums/showthread.php3?t=181895
>>> http://forums.adobe.com/thread/631103
>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
>>> http://maliboo.pl/projects/FlexFTP/
>>> http://forums.adobe.com/thread/245294
>>>
>> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>>>
>>> Thanks in Advance.
>>>
>>>
>>> With Warm Regards,
>>> Avinash
>>
>>
>>
>> --
>> JP Bader
>> Principal
>> Zavteq, Inc.
>> @lordB8r | jp@zavteq.com
>> 608.692.2468
>>
Re: SFTP file transfer for large files using flex
Posted by filippo dipisa <fi...@dipisa.net>.
in Air you have the FileStream APi that allows you to stream the file to
the server.
Basically you have to split the file in different chunks and then send to
the server.
here some code example ( I wrote on the fly and didn't test, it is just to
make you understand )
var fileStream:FileStream = new FileStream();
fileStream.open(yourReferenceToTheUploadedFile,
FileMode.READ);
fileStream.addEventListener(ProgressEvent.PROGRESS,
yourHandler);
var byteArraytoSend:ByteArray = new ByteArray();
var currentLength:int = Math.min(BUFFERSIZE,
fileStream.bytesAvailable);
var bytesAvailable:uint = fileStream.bytesAvailable -
byteArrayStartPosition;
var chunk:ByteArray = new ByteArray();
yourSocketOrRemoteApiToSendTheChunck
With the FileStream I manged to upload really big files and even entire
directories.
With Flex you can use the same architecture using the bytearray but you
risk to crash the browser flashplayer plugin if the file is bigger thatn
1GB and for some Browser even less.
Hope it helps
Filippo
On 28 March 2012 18:34, Marcus Fritze <ma...@googlemail.com> wrote:
> Hi,
>
> as maybe all know Flash supports only a file size of 100MB.
>
> from the docs:
>
> FileReference -> upload()
>
> > Although Flash Player has no restriction on the size of files you can
> upload or download, the player officially supports uploads or downloads of
> up to 100 MB.
>
> I experienced that an upload / download of a larger file via Flash
> (FileReference) is possible.
>
> I agree with Avinash! I think this is a good place to discuss this topic
> (and not the stack overflow forum). Because this mailing list is the place
> where we can improve the Flex SDK / Flash.
>
> Correct me if I am wrong, but an upload of large files (2 GB or more) is
> currently not possible in Flash. And maybe we can check if it is possible
> to enable a larger file upload / download via Flex / Flash. This feature is
> very useful for Enterprise RIA's. I have already developed such an app and
> have the same problem.
>
> Thanks!
>
> Marcus
>
> Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
>
> > Hi JP,
> >
> > Thanks for taking time to reply! Stackoverflow had questions like this
> but
> > not satisfactory answers. This was my last ditch effort since the other
> > option is to write my own SFTP plug (which clients wont pay me to do :|).
> >
> > As for the apps, this upload needs to be 'part' of a desktop application
> > written in adobe air so can't use any of these other tools :(
> >
> > Thanks
> > Avinash Y
> >
> >
> > On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
> >
> >> Hi Avinash,
> >>
> >> My quick take on this is why you would want to recreate a tool for
> >> this? Aren't there plenty of free SFTP apps already? Why not take
> >> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
> >>
> >> Also, questions like these might be better asked on other forums like
> >> stack overflow. This mailing list is for questions and development
> >> regarding the next release of Flex.
> >>
> >> Regards,
> >>
> >> JP
> >>
> >> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
> >> <av...@gmail.com> wrote:
> >>> Hi All,
> >>>
> >>> I know this community is meant for future development of Apache Flex
> but
> >>> I'm a little lost here. I need to upload ~2Gb file from my local
> machine
> >> to
> >>> a url via an air app using sftp. problem is we don't have sftp lib
> >>> available.
> >>>
> >>> Also, I'm confused as to why in forums it says the flash player needs
> to
> >>> take the entire file into memory before loading it but I don't see any
> >>> memory increase in my task manager (using the fileReference class).
> >>>
> >>> Another thing I wanted to know is how best to split up the file into
> >> chunks
> >>> for multi-part loading? Any help in any of these areas will be
> supremely
> >>> helpful!
> >>>
> >>> I've already seen the following links
> >>>
> >>> http://www.actionscript.org/forums/showthread.php3?t=181895
> >>> http://forums.adobe.com/thread/631103
> >>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
> >>> http://maliboo.pl/projects/FlexFTP/
> >>> http://forums.adobe.com/thread/245294
> >>>
> >>
> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
> >>>
> >>> Thanks in Advance.
> >>>
> >>>
> >>> With Warm Regards,
> >>> Avinash
> >>
> >>
> >>
> >> --
> >> JP Bader
> >> Principal
> >> Zavteq, Inc.
> >> @lordB8r | jp@zavteq.com
> >> 608.692.2468
> >>
>
>
Re: SFTP file transfer for large files using flex
Posted by Marcus Fritze <ma...@googlemail.com>.
Hi,
as maybe all know Flash supports only a file size of 100MB.
from the docs:
FileReference -> upload()
> Although Flash Player has no restriction on the size of files you can upload or download, the player officially supports uploads or downloads of up to 100 MB.
I experienced that an upload / download of a larger file via Flash (FileReference) is possible.
I agree with Avinash! I think this is a good place to discuss this topic (and not the stack overflow forum). Because this mailing list is the place where we can improve the Flex SDK / Flash.
Correct me if I am wrong, but an upload of large files (2 GB or more) is currently not possible in Flash. And maybe we can check if it is possible to enable a larger file upload / download via Flex / Flash. This feature is very useful for Enterprise RIA's. I have already developed such an app and have the same problem.
Thanks!
Marcus
Am 28.03.2012 um 16:55 schrieb Avinash Narayanan:
> Hi JP,
>
> Thanks for taking time to reply! Stackoverflow had questions like this but
> not satisfactory answers. This was my last ditch effort since the other
> option is to write my own SFTP plug (which clients wont pay me to do :|).
>
> As for the apps, this upload needs to be 'part' of a desktop application
> written in adobe air so can't use any of these other tools :(
>
> Thanks
> Avinash Y
>
>
> On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
>
>> Hi Avinash,
>>
>> My quick take on this is why you would want to recreate a tool for
>> this? Aren't there plenty of free SFTP apps already? Why not take
>> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>>
>> Also, questions like these might be better asked on other forums like
>> stack overflow. This mailing list is for questions and development
>> regarding the next release of Flex.
>>
>> Regards,
>>
>> JP
>>
>> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
>> <av...@gmail.com> wrote:
>>> Hi All,
>>>
>>> I know this community is meant for future development of Apache Flex but
>>> I'm a little lost here. I need to upload ~2Gb file from my local machine
>> to
>>> a url via an air app using sftp. problem is we don't have sftp lib
>>> available.
>>>
>>> Also, I'm confused as to why in forums it says the flash player needs to
>>> take the entire file into memory before loading it but I don't see any
>>> memory increase in my task manager (using the fileReference class).
>>>
>>> Another thing I wanted to know is how best to split up the file into
>> chunks
>>> for multi-part loading? Any help in any of these areas will be supremely
>>> helpful!
>>>
>>> I've already seen the following links
>>>
>>> http://www.actionscript.org/forums/showthread.php3?t=181895
>>> http://forums.adobe.com/thread/631103
>>> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
>>> http://maliboo.pl/projects/FlexFTP/
>>> http://forums.adobe.com/thread/245294
>>>
>> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>>>
>>> Thanks in Advance.
>>>
>>>
>>> With Warm Regards,
>>> Avinash
>>
>>
>>
>> --
>> JP Bader
>> Principal
>> Zavteq, Inc.
>> @lordB8r | jp@zavteq.com
>> 608.692.2468
>>
Re: SFTP file transfer for large files using flex
Posted by Avinash Narayanan <av...@gmail.com>.
Hi JP,
Thanks for taking time to reply! Stackoverflow had questions like this but
not satisfactory answers. This was my last ditch effort since the other
option is to write my own SFTP plug (which clients wont pay me to do :|).
As for the apps, this upload needs to be 'part' of a desktop application
written in adobe air so can't use any of these other tools :(
Thanks
Avinash Y
On Wed, Mar 28, 2012 at 6:54 PM, JP Bader <jp...@zavteq.com> wrote:
> Hi Avinash,
>
> My quick take on this is why you would want to recreate a tool for
> this? Aren't there plenty of free SFTP apps already? Why not take
> advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
>
> Also, questions like these might be better asked on other forums like
> stack overflow. This mailing list is for questions and development
> regarding the next release of Flex.
>
> Regards,
>
> JP
>
> On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
> <av...@gmail.com> wrote:
> > Hi All,
> >
> > I know this community is meant for future development of Apache Flex but
> > I'm a little lost here. I need to upload ~2Gb file from my local machine
> to
> > a url via an air app using sftp. problem is we don't have sftp lib
> > available.
> >
> > Also, I'm confused as to why in forums it says the flash player needs to
> > take the entire file into memory before loading it but I don't see any
> > memory increase in my task manager (using the fileReference class).
> >
> > Another thing I wanted to know is how best to split up the file into
> chunks
> > for multi-part loading? Any help in any of these areas will be supremely
> > helpful!
> >
> > I've already seen the following links
> >
> > http://www.actionscript.org/forums/showthread.php3?t=181895
> > http://forums.adobe.com/thread/631103
> > http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
> > http://maliboo.pl/projects/FlexFTP/
> > http://forums.adobe.com/thread/245294
> >
> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
> >
> > Thanks in Advance.
> >
> >
> > With Warm Regards,
> > Avinash
>
>
>
> --
> JP Bader
> Principal
> Zavteq, Inc.
> @lordB8r | jp@zavteq.com
> 608.692.2468
>
Re: SFTP file transfer for large files using flex
Posted by JP Bader <jp...@zavteq.com>.
Hi Avinash,
My quick take on this is why you would want to recreate a tool for
this? Aren't there plenty of free SFTP apps already? Why not take
advantage of one of them? Tortoise, Cute, WinSCP, FileZilla, etc.
Also, questions like these might be better asked on other forums like
stack overflow. This mailing list is for questions and development
regarding the next release of Flex.
Regards,
JP
On Wed, Mar 28, 2012 at 3:16 AM, Avinash Narayanan
<av...@gmail.com> wrote:
> Hi All,
>
> I know this community is meant for future development of Apache Flex but
> I'm a little lost here. I need to upload ~2Gb file from my local machine to
> a url via an air app using sftp. problem is we don't have sftp lib
> available.
>
> Also, I'm confused as to why in forums it says the flash player needs to
> take the entire file into memory before loading it but I don't see any
> memory increase in my task manager (using the fileReference class).
>
> Another thing I wanted to know is how best to split up the file into chunks
> for multi-part loading? Any help in any of these areas will be supremely
> helpful!
>
> I've already seen the following links
>
> http://www.actionscript.org/forums/showthread.php3?t=181895
> http://forums.adobe.com/thread/631103
> http://blog.ansuz.nl/index.php/2011/02/11/flex-ftp-abort/
> http://maliboo.pl/projects/FlexFTP/
> http://forums.adobe.com/thread/245294
> http://blog.flexexamples.com/2007/09/21/uploading-files-in-flex-using-the-filereference-class/
>
> Thanks in Advance.
>
>
> With Warm Regards,
> Avinash
--
JP Bader
Principal
Zavteq, Inc.
@lordB8r | jp@zavteq.com
608.692.2468