Improve local DNS server on darwin

We mistakenly believed that `libresolv`'s `search` function worked correctly in NetworkExtension, but it seems only `getaddrinfo` does.

This commit changes the behavior of the `local` DNS server in NetworkExtension to prefer DHCP, falling back to `getaddrinfo` if DHCP servers are unavailable.

It's worth noting that `prefer_go` does not disable DHCP since it respects Dial Fields, but `getaddrinfo` does the opposite. The new behavior only applies to NetworkExtension, not to all scenarios (primarily command-line binaries) as it did previously.

In addition, this commit also improves the DHCP DNS server to use the same robust query logic as `local`.
This commit is contained in:
世界
2025-08-18 14:19:49 +08:00
parent 1c846df903
commit 48f84b31d6
14 changed files with 433 additions and 476 deletions

View File

@@ -6,7 +6,7 @@ GOHOSTOS = $(shell go env GOHOSTOS)
GOHOSTARCH = $(shell go env GOHOSTARCH)
VERSION=$(shell CGO_ENABLED=0 GOOS=$(GOHOSTOS) GOARCH=$(GOHOSTARCH) go run github.com/sagernet/sing-box/cmd/internal/read_tag@latest)
PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid="
PARAMS = -v -trimpath -ldflags "-X 'github.com/sagernet/sing-box/constant.Version=$(VERSION)' -s -w -buildid= -checklinkname=0"
MAIN_PARAMS = $(PARAMS) -tags "$(TAGS)"
MAIN = ./cmd/sing-box
PREFIX ?= $(shell go env GOPATH)