Thanks Roland... I will include this change in the DNS module prior to adding it to CVS. I haven't had much time to work on it yet as I ended up doing some unanticipated business travel, but I'll be getting to it soon here hopefully.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Winformatik Info Sent: Friday, July 13, 2007 11:09 AM To: Mailing list for lwIP users Subject: Re: [lwip-users] DNS client for lwIP raw API Hi Jim, I have tested the resolver code from you. It is working great... after a little debugging. I always had the problem if the domain name to resolve had an odd number of bytes. If this was the case, the resolver did not work (I use a 16-bit CPU with an alignment of 2). To solve the problem I think we should surround the struct "s_dns_answer" by the two macros PACK_STRUCT_BEGIN and PACK_STRUCT_END (please see below). This handles a mapping of the struct "s_dns_answer" starting on an odd address the right way. /* The DNS answer message structure */ PACK_STRUCT_BEGIN typedef struct s_dns_answer { /* DNS answer record starts with either a domain name or a pointer to a name already present somewhere in the packet. */ u16_t type; u16_t class; u16_t ttl[2]; u16_t len; struct ip_addr ipaddr; } DNS_ANSWER; PACK_STRUCT_END Hope this also helps others... Roland Pettinato, Jim schrieb: > You're welcome... Hopefully more sweet stuff to follow. ;) > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of Taranowski, Thomas (SWCOE) > Sent: Wednesday, June 27, 2007 2:31 PM > To: Mailing list for lwIP users > Subject: RE: [lwip-users] DNS client for lwIP raw API > > > This is sweet. I've been wanting some DNS functionality for awhile. > Thanks. > > >> -----Original Message----- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] >> ] >> > On > >> Behalf Of Pettinato, Jim >> Sent: Tuesday, June 19, 2007 5:30 AM >> To: Mailing list for lwIP users >> Subject: [lwip-users] DNS client for lwIP raw API >> >> >> All: >> >> As mentioned here before, I have ported Adam Dunkel's original uIP >> DNS >> > > >> client (resolv.c) to something that works for raw API apps. There has >> been some interest expressed recently in this code by others, and >> > since > >> I don't want to keep everyone who might benefit waiting until we >> > decide > >> whether to integrate this into the core or maintain it as a separate >> application, I have attached the module here. >> >> In the nature of the raw API, this DNS client has been implemented >> > using > >> the callback scheme - there is a gethostbyname() function that >> accepts >> > a > >> callback argument that is stored away if a query is required for the >> requested host, and then is called when the DNS query completes or >> > times > >> out. See the header file for more details. >> >> The only requirements to use it (other than including the module in >> > the > >> build and calling gethostbyname() with an appropriate callback >> > function) > >> is to call resolv_init() with an appropriate DNS server IP address, >> > and > >> adding a call to the resolve_tmr() function approximately once a >> > second > >> in your timer routine. >> >> Let me know if you 1. can't access the attachment and 2. need this >> > code > >> immediately; and I'll post it as inline text or forward it to your >> specific email address. >> >> - Jim >> >> __ >> >> >> James M. Pettinato, Jr. >> Software Engineer >> E: [EMAIL PROTECTED] | P: 814 898 5250 >> >> FMC Technologies Measurement Solutions Inc. >> 1602 Wagner Avenue | Erie PA | 16510 USA >> Phone: 814 898 5000 | Fax: 814 899-3414 www.fmctechnologies.com >> > > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users > > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users > > > _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
