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| author | Mateusz Poliwczak <mpoliwczak34@gmail.com> | 2024-09-27 19:57:12 +0000 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2024-09-30 12:39:31 +0000 |
| commit | 6536c207c2309da7c1c21e3669f8ddf491e31f5b (patch) | |
| tree | 6857745018ea6c0da5de0030a8604fcddb070da9 /src | |
| parent | 0fb33863b78c03f4f3d6228e310869f2edff1195 (diff) | |
| download | go-6536c207c2309da7c1c21e3669f8ddf491e31f5b.tar.xz | |
net: improve GODEBUG=netdns=1 debug messages
Fixes #69680
Change-Id: I73b0506c7a3245ba282cffabe47543f5fce86692
GitHub-Last-Rev: 4c6a1a4c706f39d2756c65b72b78896cd4881302
GitHub-Pull-Request: golang/go#69684
Reviewed-on: https://go-review.googlesource.com/c/go/+/616263
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/net/conf.go | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/src/net/conf.go b/src/net/conf.go index 1b48546f1b..92c5618d1e 100644 --- a/src/net/conf.go +++ b/src/net/conf.go @@ -93,19 +93,30 @@ func initConfVal() { if confVal.dnsDebugLevel > 1 { println("go package net: confVal.netCgo =", confVal.netCgo, " netGo =", confVal.netGo) } + if dnsMode != "go" && dnsMode != "cgo" && dnsMode != "" { + println("go package net: GODEBUG=netdns contains an invalid dns mode, ignoring it") + } switch { - case confVal.netGo: - if netGoBuildTag { - println("go package net: built with netgo build tag; using Go's DNS resolver") + case netGoBuildTag || !cgoAvailable: + if dnsMode == "cgo" { + println("go package net: ignoring GODEBUG=netdns=cgo as the binary was compiled without support for the cgo resolver") + } else { + println("go package net: using the Go DNS resolver") + } + case netCgoBuildTag: + if dnsMode == "go" { + println("go package net: GODEBUG setting forcing use of the Go resolver") } else { - println("go package net: GODEBUG setting forcing use of Go's resolver") + println("go package net: using the cgo DNS resolver") } - case !cgoAvailable: - println("go package net: cgo resolver not supported; using Go's DNS resolver") - case confVal.netCgo || confVal.preferCgo: - println("go package net: using cgo DNS resolver") default: - println("go package net: dynamic selection of DNS resolver") + if dnsMode == "go" { + println("go package net: GODEBUG setting forcing use of the Go resolver") + } else if dnsMode == "cgo" { + println("go package net: GODEBUG setting forcing use of the cgo resolver") + } else { + println("go package net: dynamic selection of DNS resolver") + } } }() } |