TABLE OF CONTENTS The previous chapters have shown several ways that an embedded system can send and receive information on networks. The options have included applications that send messages using UDP and TCP, Web pages with dynamic content, and e-mail. Another possibility that some systems can find useful is the File Transfer Protocol (FTP), which defines a way for computers to send and receive information stored in files.
This chapter includes examples that show how the Rabbit and TINI can function as FTP servers and FTP clients, followed by details about FTP and its capabilities.
The Rabbit and TINI modules each include FTP support that helps in using a module as an FTP client or server. For the Rabbit, Dynamic C s ftp.lib and ftp_server.lib libraries provide functions for transferring information in files. For the TINI, support is available in the URL and URLConnection classes and in the TINI s FTPClient and FTPserver classes.
A Rabbit or TINI client application can communicate with just about any FTP server, in a local network or on the Internet. And you can use just about any standard FTP client application or a command-line interface to access files hosted by a Rabbit or TINI FTP server.
The example applications send text files and write the contents of received files to the console (the STDIO window in Dynamic C or a Telnet session for the TINI). In real-world applications, the embedded system can place any kind of information in the files to send...
