- From: Adrien de Croy <adrien@qbik.com>
- Date: Tue, 19 Jun 2007 13:46:31 +1200
- To: Mark Andrews <Mark_Andrews@isc.org>
- CC: Henrik Nordstrom <henrik@henriknordstrom.net>, HTTP Working Group <ietf-http-wg@w3.org>
Mark Andrews wrote: >> >> > To be perfectly honest. Applications SHOULD have access to > DHCP configuration results. > > I wish :) They should also be able to instigate DHCP_INFORM requests to request specific parameters from the DHCP server as well. I don't see it happening any time soon though >> So maybe DNS SRV records are the way to go here. Some customers lock >> down even DNS though, since the proxy does the DNS lookup for normal >> proxy operations. Also most OS provided DNS resolver implementations >> (i.e. winsock) only support A record lookups, so unless you want browser >> authors to write their own DNS resolvers (and deal with the >> configuration issues around that), they won't have much luck on many >> OSes even getting a SRV record. >> > > Most OS's support looking up any record you can think about. > > For Windows you need DNSQuery*(). Even the embedded versions > of DNSQuery_W support SRV lookups. > http://msdn2.microsoft.com/en-us/library/ms886653.aspx > > Interesting - thanks for that. I can only find documentation on MSDN for this for CE and Windows Mobile though (trying to find out OS support). We had no end of trouble trying to get a generic DNS resolver going for all versions of win32. Even finding the DNS server to use is non-trivial on Win95. That's the main reason WinGate has a spot where you can configure the DNS server to use. I'd hate to see the day where browsers have to put up a UI for the DNS server to use for the SRV record lookup for proxy auto config :) But thankfully win95 is mostly dead now anyway, except for in some less rich countries. > The problem with SRV is that you need to know the query name. > > >> the one common factor that all browsers have is HTTP support. >> >> In the end, the best solutions may be platform-specific, i.e. Active >> Directory policy based, or extensions to network logons. But I'm >> struggling :) >> >> >> Adrien >> >> >> >>> imho. >>> >>> Regards >>> Henrik >>> >>> >> -- >> Adrien de Croy - WinGate Proxy Server - http://www.wingate.com >> >> >> -- Adrien de Croy - WinGate Proxy Server - http://www.wingate.com
Received on Tuesday, 19 June 2007 01:46:19 UTC