On Mon, Feb 22, 2010 at 2:03 AM, gary clark <burslem2...@yahoo.com> wrote: > The correct way I think is to use base64 and just one connection after more > research. Good to research. > > Thanks, > Garyc
No, base64ing file contents is a terrible thing to do if you're already writing your own TCP-based protocol. Just length-prefix the data. > > --- On Sun, 2/14/10, gary clark <burslem2...@yahoo.com> wrote: > >> From: gary clark <burslem2...@yahoo.com> >> Subject: Re: [Twisted-Python] Sending jpeg data over TCP/IP >> To: "Twisted general discussion" <twisted-python@twistedmatrix.com> >> Date: Sunday, February 14, 2010, 12:18 PM >> >> hey Alexandra, >> >> The only reason why I suggested another server would be to >> distribute the >> load on the system. Essentially the files that are intended >> to be sent over will consume alot of processing since .jpeg >> etc are humongous. >> Yes two connections would be required. Well you could use >> the MD5 sum, I will not, essentially your after a unique >> identifier that represents the file your sending. What I >> intend to do is simply embed the filename and unique >> identifier as a header. Hence I do not not need to recompute >> the MD5 at the receiving end, which to be honest seems >> overkill. >> >> Anyway good luck. KISS for software is the best approach. >> >> Thanks, >> Garyc >> >> >> --- On Sun, 2/14/10, Alexandre Quessy <alexan...@quessy.net> >> wrote: >> >> > From: Alexandre Quessy <alexan...@quessy.net> >> > Subject: Re: [Twisted-Python] Sending jpeg data over >> TCP/IP >> > To: "Twisted general discussion" <twisted-python@twistedmatrix.com> >> > Date: Sunday, February 14, 2010, 11:10 AM >> > Hello again everyone, >> > Maybe using two senders/receivers would help. The >> control >> > protocol, >> > which can use XML or JSON, or whatever, would identify >> the >> > files by >> > their md5 sum? The file transfert protocol would >> detect the >> > header of >> > each file to separate them. >> > >> > a >> > >> > gary clark wrote: >> > > There are probably several way to accomplish this >> I >> > just needed to think about it a wee bit longer. One >> way >> > would be to prepend an identifier to the file,strip >> the >> > header from the raw data on reception and then save >> the >> > image. I dont think its complicated. I may need a >> seperate >> > server to handle the files though. >> > > >> > > Thanks, >> > > Garyc >> > > >> > > --- On Sat, 2/13/10, Maarten ter Huurne <maar...@treewalker.org> >> > wrote: >> > > >> > >> From: Maarten ter Huurne <maar...@treewalker.org> >> > >> Subject: Re: [Twisted-Python] Sending jpeg >> data >> > over TCP/IP >> > >> To: "Twisted general discussion" <twisted-python@twistedmatrix.com> >> > >> Date: Saturday, February 13, 2010, 6:07 PM >> > >> On Sunday 14 February 2010, Alexandre >> > >> Quessy wrote: >> > >> >> > >>> This said, sending them using a >> programmer's >> > solution >> > >> - not a sysadmin >> > >>> solution - would be closer to my own >> skills, >> > so I am >> > >> interested in >> > >>> knowing if this could be suitable. I >> think, >> > though, >> > >> that it would be >> > >>> faster to use a transfert protocol that >> would >> > be >> > >> implemented in C, not >> > >>> Python. Am I wrong? >> > >> I would suggest to implement it in Python >> first >> > and then >> > >> benchmark it. Maybe >> > >> the simplest implementation is already fast >> > enough. Maybe >> > >> the bottleneck is >> > >> the network or the disk you're writing to; in >> that >> > case you >> > >> would be better >> > >> off upgrading your switches or buying an SSD >> > instead of >> > >> writing C code. >> > >> >> > >> Bye, >> > >> Maarten >> > >> >> > >> >> _______________________________________________ >> > >> Twisted-Python mailing list >> > >> Twisted-Python@twistedmatrix.com >> > >> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python >> > >> >> > > >> > > >> > > _______________________________________________ >> > > Twisted-Python mailing list >> > > Twisted-Python@twistedmatrix.com >> > > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python >> > > >> > >> > _______________________________________________ >> > Twisted-Python mailing list >> > Twisted-Python@twistedmatrix.com >> > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python >> > >> > > > _______________________________________________ > Twisted-Python mailing list > Twisted-Python@twistedmatrix.com > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > -- Christopher Armstrong http://radix.twistedmatrix.com/ http://planet-if.com/ _______________________________________________ Twisted-Python mailing list Twisted-Python@twistedmatrix.com http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
