d81a91ebad
Resolver sockets not flushed on default gw change
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Currently when the default gw changes because of
other network connections happening in the container
the resolver sockets are not flushed. This results
in a subsequent DNS failure for external queries
A sequence of connecting the container to an overlay
network and subsequently to a bridge network without
disconnecting from any network will result in this
behaviour. This was revealed by one of the libnetwork
IT tests.
This is now fixed as part of the commit by flushing
the external query sockets when a default gw change
is detected.
Signed-off-by: Jana Radhakrishnan <mrjana@docker.com>
2016-04-10 10:40:06 -07:00
5e4fa21005
Fix the panic when a query response comes after the read() timesout
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-04-07 19:36:06 -07:00
30d649c3e8
Fix the handling for concurrent queries over UDP
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-04-01 10:45:24 -07:00
bd0d8222aa
Limit number of concurrent DNS queries
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-29 06:23:01 -07:00
ca06f1ed80
On network disconnect clear the cached connections to external
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nameservers
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-20 05:00:58 -07:00
0c22e1bd07
Avoid V6 queries in docker domain going to external nameservers
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-19 03:07:08 -07:00
2e566e3882
Add AAAA record handling in embedded DNS server
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-16 19:00:17 -07:00
4e2e0f148b
Fix nil pointer reference in ServeDNS() with concurrent go routines.
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-15 02:05:38 -07:00
9a91bbeb4f
Clear cached udp connections on resolver Stop()
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-14 17:21:41 -07:00
51058eecec
Implement DNS RR in the Docker embedded DNS server
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-03 09:33:10 -08:00
43e3da2f3a
Source external DNS queries from container namespace
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-03-03 07:29:32 -08:00
577159e0cb
Merge pull request #894 from sanimej/dns
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Set Recursion Available bit in query responses.
2016-02-17 08:42:17 -08:00
2fb14185cb
Add a check for invalid/junk messages
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-02-15 22:31:16 -08:00
cbb59adbd8
Set the compress flag for the responses from external DNS servers to
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avoid sending DNS replies > 512 bytes
Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-02-07 02:43:29 -08:00
defcd4afb9
Change in programming iptables in container
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- iptables to provide a native API
- resolver.go to invoke the iptables native API
when programming tables in the container
Signed-off-by: Alessandro Boch <aboch@docker.com>
2016-02-05 15:25:43 -08:00
36fd9d02be
Set Recursion Available bit in query response and reduce the ttl
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-01-24 05:46:47 -08:00
62b34aa361
Adding TCP listener for embedded DNS
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Signed-off-by: Madhu Venugopal <madhu@docker.com>
2016-01-22 13:49:22 -08:00
30ef9bcf4a
Retain V6 DNS server in resolv.conf; use only V4 servers for fallback
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-01-19 00:06:19 -08:00
05bd52dbb6
Setup embedded DNS server correctly on container restart
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-01-14 10:16:13 -08:00
cf7ed0a717
Embedded DNS server
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Signed-off-by: Santhosh Manohar <santhosh@docker.com>
2016-01-07 00:25:26 -08:00
Jana Radhakrishnan