I wonder if something server side could handle this maybe as well. So user initiates a new upload already in progress under the same name, different file or not. Assuming on the server side you could check for uploads in progress already for that user/session, return an error code to the client? Overhead would be minimal as you would only really have to perform the check on the first block of a file being uploaded.
Byron Mann Lead Engineer & Architect HostMySite.com On Jul 4, 2014 12:07 PM, "UXB" <[email protected]> wrote: > > Byron, > > >> Very curious to know what the scenario is for this requirement. > > The original requirement was that I was working with a file upload system > (Plupload) utilizing the chunk method for uploading files. We needed a way > for users to use HTTP to upload gig sized files. In the basic > implementation of the system each chunk of the file is uploaded to the > server with three multipart form fields; Name, chunk, chunks which contains > the actual file name, the chunk being sent and the total number of chunks > to > send. Each chunk is sent as blob. > > In testing I found that if someone opened the upload page in two or more > browsers windows (as a way of bypassing the number of files at a time in > the > queue) and started two upload sessions they could easily upload a different > file with the same name simultaneously. There was no way to determine which > window uploaded which chunk of two different files with eh same name so on > the server receiving end they would become intermixed and the file would be > corrupted. > > My first thought was that I needed a way to either to uniquely identify > that > there were two separate windows of the upload page opened and send that > identifier within the extended multipart form fields. > > In investigating I found that instead I could uniquely identify each file > from each instance of the window (see my other thread) even in the same > session and thereby prevent file upload corruption. > > > > Dennis Powers > UXB Internet - A website Design and Hosting Company > P.O. Box 6028, Wolcott, CT 06716 - T:203-879-2844 > W: http://www.uxbinternet.com > W: http://www.ctbusinesslist.com > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:358821 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
