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Subject: Re: [ebxml-msg] LZJU90 Compressed Encoding
Doug, I know that HTTP is totally fine with gzip and other binary formats...many web servers even support sending gzipped documents to clients that request it. I also know that many (most?) SMTP servers support 8 bit, but that cannot be guaranteed. I was looking for something that I could propose to the group that would work universally, perhaps optionally allowing the SOAP envelope attachment to be compressed as well as payloads via the transfer encoding header. The reason I was looking at LZJU90 was that it defines compression that encodes. All the compression algos I looked at produced binary output that would not be SMTP friendly, causing mail servers to feel compelled to do some encoding themselves. -Matt On Monday, January 13, 2003, at 09:53 AM, Doug Bunting wrote: > Matt, > > Is this specifically for SMTP? I'm wondering about the gzip'd HTTP > option. I'm not sure how widely deployed that option might be but > wonder if a similar option is available now that many (most?) SMTP > implementations are (supposedly) 8 bit clean. Must admit I'm not sure > the UTF-8 emails I've received were not base64 encoded on the wire. > > I guess this is a bunch of questions: Are you focused on SMTP? Does > modern SMTP support a compression option that doesn't require base64 > encoding? Is that option widely available? > > thanx, > doug > > Matthew MacKenzie wrote: > >> On Saturday, January 11, 2003, at 11:05 AM, William J. Kammerer >> wrote: >> >>> Sounds fascinating. Let us know if you find out more. But I would >>> think it really isn't necessary anymore considering that ZIP is such >>> a >>> ubiquitous format - a BASE64 encoded ZIPped attachment serves the >>> same >>> purpose, doesn't it? >> >> >> It serves the same purpose, but Base64 adds ~33% to the unencoded >> file size, plus the added CPU overhead of both decoding and >> unzipping. I'm looking for something better. >> >> Regards, >> >> Matt >> >> >> ---------------------------------------------------------------- >> To subscribe or unsubscribe from this elist use the subscription >> manager: <http://lists.oasis-open.org/ob/adm.pl> >
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