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Commit Graph
40 Commits
Author SHA1 Message Date
Bryan Boreham 503546d2a9 Return DNS no-error with empty answer if we have a matching name 
but the query is for a record type we don't support.
 2016-05-03 17:33:51 +01:00
Adam Harrison f64f63f675 Handle truncated responses from upstream servers 2015-11-02 15:00:02 +00:00
Tom Wilkie 58ae0cd113 Pass docker bridge ip to dns server, and filter it out of upstream dns ips. 2015-08-24 16:00:26 +00:00
Tom Wilkie 8516ab7c69 Unify logic to tell if DNS response is too big. 2015-08-21 12:39:12 +00:00
Matthias Radestock 2284bc2120 move error response construction to handler 
and implement it in terms of existing functions, plus provide a
convenience method for sending the rather common NameError.
 2015-08-21 12:09:22 +01:00
Matthias Radestock 0b5f5fd74e extract response writing 2015-08-20 20:24:12 +01:00
Matthias Radestock 9a7abe68fd optimise response construction when no truncation is required 
no need to do a binary search if all the answers fit
 2015-08-20 20:18:56 +01:00
Matthias Radestock 2ea27ec08f simplify response truncation 2015-08-20 19:55:19 +01:00
Matthias Radestock 322441d5c8 inline truncateResponse 2015-08-20 19:55:19 +01:00
Matthias Radestock 7c7c302920 extract response construction 2015-08-20 19:17:03 +01:00
Matthias Radestock 69986e77dd cosmetic 2015-08-20 18:46:55 +01:00
Matthias Radestock 8182022d52 refactor dns handlers 
introduce a handler struct, which

- enables lifting of all the handle* closures to methods
- eliminates the passing around of defaultMaxResponseSize
- reduces the number of free-floating functions
 2015-08-20 18:27:58 +01:00
Tom Wilkie 4f00dab4c4 Compress recursive answers if they are too big. 2015-08-17 18:25:26 +01:00
Matthias Radestock 755a949f6d Merge pull request #1277 from weaveworks/1275-negative-dns 
Return NXDOMAIN when we don't have entries

and drop the non-authoritative special case for recursive dns.

Fixes #1275.
 2015-08-10 17:19:44 +01:00
Tom Wilkie c2d5b35cd6 Add test for negative DNS queries 2015-08-10 13:13:12 +00:00
Tom Wilkie 073836905a Return NXDOMAIN when we don't have entries, and drop the non-authoritative special case for recursive dns. 2015-08-10 12:19:21 +00:00
Matthias Radestock fd2a59417d cosmetic 2015-08-10 12:39:00 +01:00
Tom Wilkie db6ee9954c Allow users to set dns listen address so we can run the weave router in the host net namespace. 2015-07-28 14:49:09 +00:00
Tom Wilkie 91395d6728 Use Msg.Copy! 2015-07-15 11:05:36 +00:00
Tom Wilkie fa73240812 Copy dns requests and give them a fresh id when doing recursive queries. 2015-07-14 16:44:21 +00:00
Tom Wilkie 361ed1b4a6 Resolve unqualified domains in the weave.local domain. 2015-07-14 16:05:41 +00:00
Tom Wilkie 8b061fd555 Gossip-based DNS embedded in the router. 
- Nameserver holds a sorted list of (hostname, peer, container id, ip) tuples.
- Entries are gossiped using topology gossip / broadcast - only new/updated entries
  are propogated as expected.
- Entries for a given peer are removed when the connection to the peer is lost.
- Entries are tombstoned when containers die.  Tombstones are kept for 10mins,
  as they do not need to survive partition, only gossip propagation delay.
 2015-07-14 16:00:38 +00:00
Tom Wilkie 01f7201a9e Remove legacy WeaveDNS code. 2015-07-14 16:00:28 +00:00
Matthias Radestock 18032015b9 Revert "Resolve unqualified names in the local WeaveDNS domain" 2015-07-14 16:06:05 +01:00
Alvaro Saurin efb0ead9ad Resolve unqualified names in the local WeaveDNS domain 
Unit tests
 2015-07-14 10:46:41 +02:00
Alvaro Saurin 858a6dd253 Make the TTL returned for local answers configurable. 2015-05-29 12:50:18 +02:00
Alvaro Saurin 6d2317d60e Silence "golint" errors 
Silence "go vet" errors
Run goimports
 2015-05-28 10:05:22 +02:00
Alvaro Saurin 954c5cb394 Limit the number of answers we provide to users. 2015-05-27 14:54:29 +02:00
Alvaro Saurin c4b07fd44e Shuffle all the replies, not only the ones from the cache... 2015-05-26 21:24:28 +02:00
Alvaro Saurin 07d15092aa Do not invoke the mDNS lookups from the server: they are used from the Zone database now... 
Improved DNS server:
- simplify the handlers code, removing duplicated code
- more configuration parameters (eg, we can now disable the cache)
- we can now bind to port 0 and let the server get a free port (so we can get rid of the mess we had in the unit tests...)
 2015-05-26 21:20:42 +02:00
Alvaro Saurin ba98135e03 Return NOTIMP for some unimplemented query types, NXDOMAIN otherwise 2015-05-05 21:31:11 +02:00
Alvaro Saurin 58c8945b32 Support "insistent" queries in the mDNS client, used for obtaining all possible responses from mDNS servers. 
Support for multiple responses from Lookup*() methods
Support for multiple records when building packets with make*() methods
Use a common "ZoneRecord" interface for structs that contain names and IPs
 2015-04-23 13:01:29 +02:00
Matthias Radestock 1ad950f177 cosmetic: more linting 2015-03-27 01:12:16 +00:00
Matthias Radestock 2d83fcc398 oops 2015-03-26 18:37:37 +00:00
Matthias Radestock 44a4dd9888 cosmetic: go vet 2015-03-26 18:36:00 +00:00
Adam Harrison efb7c0f1bc gofmt 2015-03-26 10:54:46 +00:00
Alvaro Saurin 9dcec8ca16 basic DNS cache 
unit tests
 2015-03-24 12:44:01 +01:00
Matthias Radestock fda412a151 refactor: rename badly named function 
makeAddressReply handles both A and AAAA records
 2014-11-17 12:06:06 +00:00
Michael Bridgen 822ec90606 Rename weavedns package to nameserver, and fix up 2014-10-29 11:41:58 +00:00
Michael Bridgen 8469fea215 Move files around in preparation for melding into weave code 
* library code will go in weave/nameserver/
 * main.go for the server goes in weavedns/ with the containerising
 2014-10-29 11:34:56 +00:00