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The 4th Space Internet Workshop focused on File Transfer Protocols (FTP) with participants from universities, GSFC, JPL, and industry. Discussions highlighted TCP-based and UDP-based protocols, including MDP and CFDP, with emphasis on their pros and cons. Attendees shared experiences using various simulators and highlighted the need for robust file systems. Additionally, applications for TCP accelerators and performance-enhancing proxies were explored, alongside the growing interest in using UDP mechanisms. The event showcased diverse OS systems like VxWorks, RTEMS, and FreeBSD in technology applications.
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File Transfer Protocols BOF • Makeup of attendees on Tue 6/8: • 4 University • 2 GSFC • 1 JPL • 3 Industry/Contractors • Most of them were here "to learn" 4th Space Internet Workshop
File Transfer Protocols BOF • Major division into TCP-based protocols and UDP-based protocols • Univ. folks mostly using TCP-based • Some using simulators that have no UDP FT protocols • CFDP 'C' library will soon become available, suitable for porting to simulators 4th Space Internet Workshop
File Transfer Protocols BOF • Majority of discussions were about UDP protocols • Three considered : CFDP, MDP, NORM • NORM dismissed because still in development • Remainder of discussions about various pros, cons, and features of MDP and CFDP 4th Space Internet Workshop
File Transfer Protocols BOF • Misc. other discussions: • Some systems still don't have a file system • Coding trade-offs mentioned, but not much being done with this yet • Mention (unconfirmed) that the DTN is working on their own file transfer protocol 4th Space Internet Workshop
File Transfer Protocols BOF • Wednseday 6/9/2004 • Different group of people: • 4 University • 2 GSFC • 5 Industry/Contractors • Discussion centered on TCP based protocols 4th Space Internet Workshop
File Transfer Protocols BOF • One attendee has an embedded handheld application that depends on Web-based semantics to deliver content. Interest is in TCP accelerators and performance enhancing proxies • Mentioned the possibility of using a Java applet to "bootstrap" a UDP based transfer mechanism 4th Space Internet Workshop
File Transfer Protocols BOF • Unanswered question: What does Blackberry use to deliver their content? • Misc. other discussions • Telemetry stream capture and conversion into files • Which OSs were being used 4th Space Internet Workshop
File Transfer Protocols BOF • OS List: • VxWorks • RTEMS • WinCE • VRTX • freeBSD • SCOS • RT-Linux • Some interest in LynxOS, but no one using it 4th Space Internet Workshop