File transfer over the air with iPad - objective-c

I have an iPad app that outputs a PDF file that needs to be uploaded to a remote server. What are my options here? Is there a sFTP or FTP implementation for iOS that would help me achieve this? Can it be done using other protocol?
Thanks!

FTP Client Wrapper in Objective-C for iPhone
ConnectionKit (might not be iOS compatible)

How about HTTP? http://www.cocoadev.com/index.pl?HTTPFileUpload
EDIT:
SCP using libssh2? http://www.libssh2.org/examples/scp_write.html

This on costs money: http://www.chilkatsoft.com/ssh-sftp-objc.asp
Haven't tried it myself yet.
(And a duplicate on SO: Upload file from iphone using SFTP protocol)

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Flash is never supported on iOS devices , Steve jobs Decision
No you can't. Playing swf file is strictly prohibited in iOS. Still this one might help you,
UIWebView html file with swf load external link, but internal

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Or read an article: Working with FTP Servers

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I'm looking to download a file from an FTP server as well as upload a file to an FTP server with Objective-C. Don't point me out to ConnectionKit, iPhone resources, or integration of Applescript code please.
If you want horrible integration of this you can use an NSTask to use with wget or ftp.

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Thank you very much!
MobileSafari doesn't allow for direct uploads (yet). It would be possible through an external app like Picup
I don't believe Apple will ever support a direct upload function in MobileSafari, since it's too complicated for them to give the end-user limited access to the filesystem to upload a file (whether it be from /var/mobile/) due to security reasons. Maybe an upload from another app like Dropbox or iDisk would do the trick, but that's just my guess.

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its already there in lcds.
I need to notify the user of the app when some new file is uploaded to the ftp. I need to connected to rtmp so that when i upload a file other need to get notification about the file i uploaded. it should a real time.
is there any suggestions or alternatives? it would be a great help.
Thanks a lot in advance :)