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I’m trying to write standard FTP server.
I wonder whether this scenario is correct or not?
1. On each request of clients, a thread manager makes thread for control connection.
2. When control connection thread receives PORT command, it establishes data connection(active open)
Is this usual solution? I wonder this since I have to create standard FTP server.
I would be happy if you answered JUST ‘yes’ or ‘no’.
Thank you in advance.
Yes, FTP uses two connections, read the RFC http://www.ietf.org/rfc/rfc959.txt, the wikipedia article is a bit friendlier http://en.wikipedia.org/wiki/File_Transfer_Protocol but the RFC is the bible.
As far as threads go you will need a thread to listen for incoming connections, a thread to process the control connection and a thread to process the data connection. You could do it all with one thread by using asynchronous i/o using select.