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net: document LookupTXT behavior with multiple strings per record

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CL 8966 ("net: allow a dns TXT record to contain more than
one <character-string>") concatenates strings in a TXT record. Document
that behavior, since it's not obvious whether the strings will be
concatenated or accumulated in the returned slice.

Change-Id: I6acb27b296290361a95a6058a056f8e7c2df9a2b
GitHub-Last-Rev: ec0726c7b8
GitHub-Pull-Request: golang/go#65233
Reviewed-on: https://go-review.googlesource.com/c/go/+/557695
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
This commit is contained in:
Simon Ser 2024-12-22 23:51:26 +00:00 • committed by Gopher Robot
parent 500675a7c8
commit 05d8984781
1 changed files with 6 additions and 0 deletions
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6
src/net/lookup.go
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@ -614,6 +614,9 @@ func (r *Resolver) LookupNS(ctx context.Context, name string) ([]*NS, error) {
// LookupTXT returns the DNS TXT records for the given domain name.
//
// If a DNS TXT record holds multiple strings, they are concatenated as a
// single string.
//
// LookupTXT uses [context.Background] internally; to specify the context, use
// [Resolver.LookupTXT].
func LookupTXT(name string) ([]string, error) {
@ -621,6 +624,9 @@ func LookupTXT(name string) ([]string, error) {
}
// LookupTXT returns the DNS TXT records for the given domain name.
//
// If a DNS TXT record holds multiple strings, they are concatenated as a
// single string.
func (r *Resolver) LookupTXT(ctx context.Context, name string) ([]string, error) {
return r.lookupTXT(ctx, name)
}