Hi Andrew, 2010/4/28 Andrew Commons <[email protected]>:
> url_beg <string> > Returns true when the URL begins with one of the strings. This can be used to > check whether a URL begins with a slash or with a protocol scheme. > > So I'm assuming that "protocol scheme" means http:// or ftp:// or whatever.... I would assume that, too.. but :) reading the other matching options it looks like those only affect the "anchoring" of the matching. Like > url_ip <ip_address> > Applies to the IP address specified in the absolute URI in an HTTP request. > It can be used to prevent access to certain resources such as local network. > It is useful with option "http_proxy". yep. but watch this "http_proxy" > url_port <integer> > "http_proxy". Note that if the port is not specified in the request, port 80 > is assumed. same here.. This enables plain proxy mode where requests are issued (from the client) like GET http://www.example.com/importantFile.txt HTTP/1.0 . > This seems to be reinforced (I think!) by: > > url_dom <string> > Returns true when one of the strings is found isolated or delimited with dots > in the URL. This is used to perform domain name matching without the risk of > wrong match due to colliding prefixes. See also "url_sub". I personally don't think so.. I guess this is just another version of "anchoring", here "\.$STRING\." > If I'm suffering from a bit of 'brain fade' here just set me on the right > road :-) If the url_ criteria have different interpretations in terms of what > the 'url' is then let's find out what these are! I currently can't give it a try as i finally managed to lock myself out, but http://haproxy.1wt.eu/download/1.4/doc/configuration.txt has an example that looks exactly as what you need: ------------------- To select a different backend for requests to static contents on the "www" site and to every request on the "img", "video", "download" and "ftp" hosts : acl url_static path_beg /static /images /img /css acl url_static path_end .gif .png .jpg .css .js acl host_www hdr_beg(host) -i www acl host_static hdr_beg(host) -i img. video. download. ftp. # now use backend "static" for all static-only hosts, and for static urls # of host "www". Use backend "www" for the rest. use_backend static if host_static or host_www url_static use_backend www if host_www ------------------- and as "begin" really means anchoring it with "^" in a regex this would mean that there's no host in url as this would redefine the meaning of "begin" which should not be done :) So you should be fine with acl xxx_host hdr(Host) -i xxx.example.com acl xxx_url url_beg / #there's already a predefined acl doing this. use_backend xxx if xxx_host xxx_url if i recall your example correctly.. But you should really put something behind the url_beg to be of any use :) Just my 2 cent Beni.
