On Tue, Dec 18, 2007 at 08:27:23AM +0900, Stephen J. Turnbull wrote: > David Roundy writes: > > Hmmmm. Alas, curl 7.16 is not yet in debian stable (my default for when we > > can require something), > > This is an optimization. Add a configure test for it, build it in > when available, add a Darcs option for it whether or not it's > actually, and a warning that this option is unimplemented/a no-op in > this instance of Darcs when it's not available.
Yeah, that makes sense. > > but that's still very interesting! Do you by any > > chance have experience coding with libcurl? > > I've wrapped libcurl for XEmacs. It was a while ago, never completed, > I don't have much experience actually using it, and won't have time to > look at Darcs soon, but maybe my wrapping experience will be of use. > Feel free to CC me on any threads regarding work on this. I'll definitely try to remember to do so! > > > CURLMOPT_PIPELINING > > > > > > Pass a long set to 1 to enable or 0 to disable. Enabling pipelining on a > > > multi handle will make it attempt to perform HTTP Pipelining as far as > > > possible for transfers using this handle. This means that if you add a > > > second request that can use an already existing connection, the second > > > request will be "piped" on the same connection rather than being > > > executed in parallell. (Added in 7.16.0) > > Based on my minimal experience with libcurl, it looks to me like this > is a straightforward change to Darcs sources; you don't even have to > catch any new errors. Looks like libcurl will automatically fall back > to a new connection if pipelining fails. IIRC switching from "easy" > to "multi" but providing only "easy" functionality is not that hard, > you just need to add some boilerplate setup. That's good news! We'll definitely also need some not-quite-trivial changes in darcs simply because darcs currently does all its downloads synchronously, which I presume wouldn't work well with the piplining changes. -- David Roundy Department of Physics Oregon State University _______________________________________________ darcs-devel mailing list [email protected] http://lists.osuosl.org/mailman/listinfo/darcs-devel
