> <location xml:base="http://download.example.com/root"; > href="packages/example-0.1-1.x86_64.rpm"/> > > My reading of RFC 3986 suggests that the combined URL should be: > > http://download.example.com/packages/example-0.1-1.x86_64.rpm After reading the RFC, I must agree. o return a string consisting of the reference's path component appended to all but the last segment of the base URI's path (i.e., excluding any characters after the right-most "/" in the base URI path, or excluding the entire base URI path if it does not contain any "/" characters). That's how urlparse.urljoin() works. > However, the expected URL (from the server directory layout and the > fact that yum can download the RPM) appears to be: > > http://download.example.com/root/packages/example-0.1-1.x86_64.rpm Yes, instead of merging, Yum just joins all components, inserting a slash in the middle if there's not one already. > Is there a high-level description of how yum combines URLs? Any > suggestions for approximating that? Yum handles base URLs in variety of ways: 1) metalink.xml The <url> elements always end with "/repodata/repomd.xml". Yum checks for this and strips these last two path components. This is probably an accepted de-facto standard. 2) baseurl set in *.repo file If the baseurl does not end with "/", Yum includes the last component in full url. 3) repomd.xml The <location base=".."> is parsed, but never used. Mirror URLs are used instead. 4) primary.xml That's the example you used. Handled as in #2, with one small extra bug, that "/" may be duplicated. createrepo sets the baseurl attribute directly from the --baseurl cli option. IMO, #1 can't be changed. #2 is mostly ok, as the shipped .repo files almost always have baseurls with trailing slashes anyway. I'm surprised that baseurls in #3 and #4 are handled differently. #4 could be worked around in createrepo, by appending a trailing slash to --baseurl option. _______________________________________________ Yum mailing list Yum@xxxxxxxxxxxxxxxxx http://lists.baseurl.org/mailman/listinfo/yum
