问题
I need to find a storage service that can programatically (REST API) send (FTP) a file to a third party service. I was thinking of using Amazon S3, but I found a previous similar question here: Sending file from S3 to third party FTP server using CloudFront and apparently it cant be done.
What I want to avoid is downloading the file to my app server and then upload it to the third party server. I want to send a command to the storage server to send it directly to the third party server.
If I can't find a storage service that delivers this functionality, pricing is my second priority.
Right now I'm thinking either box.net, sugarsync or dropbox, as well as amazon S3 since all of these provide a REST API I can use.
Thank you for your help!
来源：https://stackoverflow.com/questions/8403401/choosing-cloud-storage-service-with-web-api-can-ftp-third-party-server