Commit Graph

21 Commits

Author SHA1 Message Date
Cuong Manh Le
ef7432df55 Fix staticcheck linter 2025-10-09 19:12:06 +07:00
Cuong Manh Le
a72ff1e769 fix: ensure upstream health checks can handle large DNS responses
- Add UpstreamConfig.VerifyMsg() method with proper EDNS0 support
- Replace hardcoded DNS messages in health checks with standardized verification method
- Set EDNS0 buffer size to 4096 bytes to handle large DNS responses
- Add test case for legacy resolver with extensive extra sections
2025-10-09 18:47:18 +07:00
Cuong Manh Le
c736f4c1e9 test: improve DNS resolver tests reliability and thread safety
- Add timeouts and proper cleanup in Test_osResolver_Singleflight:
  * Implement context timeout
  * Add proper PacketConn cleanup
  * Fix race conditions in error handling
  * Improve atomic value reporting

- Enhance Test_osResolver_HotCache:
  * Add proper timeout context
  * Implement more reliable cache verification
  * Fix potential resource leaks
  * Add deterministic polling intervals

- Add thread safety to Test_Edns0_CacheReply:
  * Implement proper timeout context
  * Add proper resource cleanup
  * Fix concurrent operations handling

The changes improve overall test suite reliability by addressing resource
management, timeout handling, and thread safety concerns across multiple DNS
resolver test cases.
2025-10-09 17:49:21 +07:00
Cuong Manh Le
fc527dbdfb all: eliminate usage of global ProxyLogger
So setting up logging for ctrld binary and ctrld packages could be done
more easily, decouple the required setup for interactive vs daemon
running.

This is the first step toward replacing rs/zerolog libary with a
different logging library.
2025-10-09 17:45:59 +07:00
Cuong Manh Le
51e58b64a5 Preparing for v2.0.0 branch merge
This commit reverts changes from v1.4.5 to v1.4.7, to prepare for v2.0.0
branch codes.

Changes includes in these releases have been included in v2.0.0 branch
already.

Details:

Revert "feat: add --rfc1918 flag for explicit LAN client support"

This reverts commit 0e3f764299.

Revert "Upgrade quic-go to v0.54.0"

This reverts commit e52402eb0c.

Revert "docs: add known issues documentation for Darwin 15.5 upgrade issue"

This reverts commit 2133f31854.

Revert "start mobile library with provision id and custom hostname."

This reverts commit a198a5cd65.

Revert "Add OPNsense new lease file"

This reverts commit 7af29cfbc0.

Revert ".github/workflows: bump go version to 1.24.x"

This reverts commit ce1a165348.

Revert "fix: ensure upstream health checks can handle large DNS responses"

This reverts commit fd48e6d795.

Revert "refactor(prog): move network monitoring outside listener loop"

This reverts commit d71d1341b6.

Revert "fix: correct Windows API constants to fix domain join detection"

This reverts commit 21855df4af.

Revert "refactor: move network monitoring to separate goroutine"

This reverts commit 66e2d3a40a.

Revert "refactor: extract empty string filtering to reusable function"

This reverts commit 36a7423634.

Revert "cmd/cli: ignore empty positional argument for start command"

This reverts commit e616091249.

Revert "Avoiding Windows runners file locking issue"

This reverts commit 0948161529.

Revert "refactor: split selfUpgradeCheck into version check and upgrade execution"

This reverts commit ce29b5d217.

Revert "internal/router: support Ubios 4.3+"

This reverts commit de24fa293e.

Revert "internal/router: support Merlin Guest Network Pro VLAN"

This reverts commit 6663925c4d.
2025-10-09 16:47:51 +07:00
Cuong Manh Le
fd48e6d795 fix: ensure upstream health checks can handle large DNS responses
- Add UpstreamConfig.VerifyMsg() method with proper EDNS0 support
- Replace hardcoded DNS messages in health checks with standardized verification method
- Set EDNS0 buffer size to 4096 bytes to handle large DNS responses
- Add test case for legacy resolver with extensive extra sections
2025-08-15 22:55:47 +07:00
Cuong Manh Le
b4faf82f76 all: set edns0 cookie for shared message
For cached or singleflight messages, the edns0 cookie is currently
shared among all of them, causing mismatch cookie warning from clients.
The ctrld proxy should re-set client cookies for each request
separately, even though they use the same shared answer.
2025-05-27 18:09:16 +07:00
Cuong Manh Le
a983dfaee2 all: optimizing multiple queries to upstreams
To guard ctrld from possible DoS to remote upstreams, this commit
implements following things:

 - Optimizing multiple queries with the same domain and qtype to use
   singleflight group, so there's only 1 query to remote upstreams at
   any time.
 - Adding a hot cache with 1 second TTL, so repeated queries will re-use
   the result from cache if existed, preventing unnecessary requests to
   remote upstreams.
2025-05-23 21:09:15 +07:00
Alex
23e6ad6e1f use first public os reolver response when no LAN servers exist
os resolver debugging improvement

use first public non success answer when no LAN nameservers exist

use first public non success answer when no LAN nameservers exist

fix the os resolver test
2025-02-18 20:23:36 +07:00
Alex
917052723d don't overwrite OS resolver nameservers if there arent any 2025-02-10 18:41:34 +07:00
Alex
2687a4a018 remove leaking timeout, fix blocking upstreams checks, leaking is per listener, OS resolvers are tested in parallel, reset is only done is os is down
fix test

use upstreamIS var

init map, fix watcher flag

attempt to detect network changes

attempt to detect network changes

cancel and rerun reinitializeOSResolver

cancel and rerun reinitializeOSResolver

cancel and rerun reinitializeOSResolver

ignore invalid inferaces

ignore invalid inferaces

allow OS resolver upstream to fail

dont wait for dnsWait group on reinit, check for active interfaces to trigger reinit

fix unused var

simpler active iface check, debug logs

dont spam network service name patching on Mac

dont wait for os resolver nameserver testing

remove test for osresovlers for now

async nameserver testing

remove unused test
2025-01-20 15:03:27 +07:00
Cuong Manh Le
db6e977e3a Only used saved LAN servers if available 2025-01-14 14:31:48 +07:00
Cuong Manh Le
37d41bd215 Skip public DNS for LAN query
So we don't blindly send requests to public DNS even though they can not
handle these queries.
2024-12-19 21:50:00 +07:00
Cuong Manh Le
f5ba8be182 Use ControlD Public DNS when non-available
This logic was missed when new initializing OS resolver logic was
implemented. While at it, also adding this test case to prevent
regression.
2024-12-19 21:50:00 +07:00
Cuong Manh Le
ed39269c80 Implementing new initializing OS resolver logic
Since the nameservers that we got during startup are the good ones that
work, saving it for later usage if we could not find available ones.
2024-12-19 21:50:00 +07:00
Cuong Manh Le
65de7edcde Only store last LAN server if available
Otherwise, queries may still be forwarded to this un-available LAN
server, causing slow query time.
2024-10-22 22:01:37 +07:00
Cuong Manh Le
0cdff0d368 Prefer LAN server answer over public one
While at it, also implementing new OS resolver chosing logic, keeping
only 2 LAN servers at any time, 1 for current one, and 1 for last used
one.
2024-10-22 00:14:32 +07:00
Cuong Manh Le
f87220a908 Avoid data race when initializing OS resolver
With new leaking queries features, the initialization of OS resolver can
now lead to data race if queries are resolving while re-initialization
happens.

To fix it, using an atomic pointer to store list of nameservers which
were initialized, making read/write to the list concurrently safe.
2024-10-17 23:41:12 +07:00
Cuong Manh Le
56f9c72569 Add ControlD public DNS to OS resolver
Since the OS resolver only returns response with NOERROR first, it's
safe to use ControlD public DNS in parallel with system DNS. Local
domains would resolve only though local resolvers, because public ones
will return NXDOMAIN response.
2024-08-07 15:51:09 +07:00
Cuong Manh Le
c94e1b02d2 all: supports multiple protocols for no config mode
Updates #78
2023-03-31 23:31:38 +07:00
Cuong Manh Le
ba48ff5965 all: fix os resolver hangs when all server failed
For os resolver, ctrld queries against all servers concurrently, and get
the first success result back. However, if all server failed, the result
channel is not closed, causing ctrld hang.

Fixing this by closing the result channel once getting back all response
from servers.

While at it, also shorten the backoff time when waiting for network up,
ctrld should serve as fast as possible after network is available.

Updates #34
2023-03-31 10:18:14 +07:00