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You asked stupid question, because FTP _is_ reliable, since it works over TCP. Read about FTP's "block transfer mode" - exactly what you need for broken connections.
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thank you for your opinion
unfortunately the majority of ftp implementations do not have the option of "block transfer mode" preferring to implement the Stream mode instead.
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But it's not a reason to name FTP as "unreliable", do you agree?  EVERYTHING above TCP is reliable.
And best "really working" way is rsync or torrent (as adviced above).
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Sorry but I don't agree
In my book if a program sets out to do something (in this case transfer a file) and the results are not achieved it isn't reliable. It doesn't matter to me or the customer why the program is failing just that it is
I wasn't aware of the alternate modes in the ftp spec and after checking it appears that a lot of ftp programs available only implement stream mode and now I know I might have phrased the subject slightly differently but the idea of a subject is to convey what you are looking for in a few words
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If you use good tool in a wrong environment, why you blame the tool?? 3G _is_ a wrong environment, supposed to be very unstable! So blame 3G, not a FTP. And it's not a problem of FTP that some lazy ass didn't implement "block" mode transfer.
You're talking from side of "I wanna this result" (side of USER - man who doesn't know and don't want to know internals of protocol). But you _blame_ protocol like you KNOW internals! Don't you see you jumped to the side of your incompetency??
All what you can ask is: "We need to transfer files in unreliable 3G environment. Previously we use wrong tool FTP, can you please advice for tool which can do reliable transfer over unstable connection?".
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Don't knock a compliant ftp just because you'll have to install a compatible version on both client and server ends. After all, if you go with some other application, you'll already have to do that anyway. The difference is that the client won't have to learn some new tool just for their file transfers with you. Whether that difference is a plus or a minus depends on the client's attitude about this matter.
We can program with only 1's, but if all you've got are zeros, you've got nothing.
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I wasn't aware that I had knocked a compliant ftp.
Or did you mean the fact that I said that in the particular circumstances the ftp being used wasn't reliable?
I think I was probably clear enough that I had been happy using ftp until the client changed their internet connection to 4g at which point the ftp program being used failed to cope and I was looking for an alternative. I can now see from Thorniks response that this could be a different ftp implementation
modified 11-Jul-14 12:56pm.
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We do a lot of data transfers from our site to specific NASA sites and the data has to get there correctly.
We had been using FTP and shipping the MD5's but one of our clients had to change their access due to security issues so we changed to SFTP which has a guaranteed delivery feature.
We have not had any issues with failed or improperly transferred files since.
Jerry W. Manweiler, Ph.D.
Fundamental Technologies, LLC
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So, I put my bit-throttler into a 'live test' environment and it works! I've managed to reduce the whole of Bedford's bandwidth by 90%!
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I suggest you continue to monitor it, there may be unexpected side effects.
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Y es , I su pect t hat thhis mig ht haapen (*&&*%$#*(&&*()( *&%$% *&%^$%*
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With a little more throttling, you could reduce the UK's online demand for shell suits by half! 
Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952)
Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)
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You couldn't get it to reduce the bandwidth all towns south of that along the A6 as well could you? Just for experimental purposes...
Alberto Brandolini: The amount of energy necessary to refute bullshit is an order of magnitude bigger than to produce it.
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Nagy Vilmos wrote: I've managed to reduce [...] bandwidth by 90%!
Makes me wonder what you downloaded that takes up that much bandwidth! 
GOTOs are a bit like wire coat hangers: they tend to breed in the darkness, such that where there once were few, eventually there are many, and the program's architecture collapses beneath them. (Fran Poretto)
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Well, I do have one, but it is so slow.
Seriously, waiting over a minute for google, 5 mins for CP...
Rang Virgin Media, got fobbed off with a 'We will look into it'
No work 
---------------------------------
Obscurum per obscurius.
Ad astra per alas porci.
Quidquid latine dictum sit, altum videtur .
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More to the point, no CCC... 
Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952)
Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)
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How many letters?
---------------------------------
Obscurum per obscurius.
Ad astra per alas porci.
Quidquid latine dictum sit, altum videtur .
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About a dozen per minute, by the look of it!
Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952)
Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)
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Searching for Dalek took me 0.33 sec...
You are really need to be patient not to take them head off. Or is it the normal British temperament
If me line was so slow I would get the manager on line in less then 1 minutes I got a re-route in 5...
I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)
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The result with messing with a Virgin.
As I grow older I've found that pleasing everyone is impossible but pissing everyone off is a piece of cake.
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"You can't find one of them in Luton!"
Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952)
Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)
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They're an endangered species.
As I grow older I've found that pleasing everyone is impossible but pissing everyone off is a piece of cake.
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Round those parts, they're extinct!
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