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net: document LookupTXT behavior with multiple strings per record

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Commit bfb077e0ee ("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.
This commit is contained in:
Simon Ser 2024-01-23 15:02:42 +01:00
parent 704401ffa0
commit ec0726c7b8
1 changed files with 6 additions and 0 deletions
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6
src/net/lookup.go
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@ -629,6 +629,9 @@ func (r *Resolver) LookupNS(ctx context.Context, name string) ([]*NS, error) {
// LookupTXT returns the DNS TXT records for the given domain name. // 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 // LookupTXT uses [context.Background] internally; to specify the context, use
// [Resolver.LookupTXT]. // [Resolver.LookupTXT].
func LookupTXT(name string) ([]string, error) { func LookupTXT(name string) ([]string, error) {
@ -636,6 +639,9 @@ func LookupTXT(name string) ([]string, error) {
} }
// LookupTXT returns the DNS TXT records for the given domain name. // 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) { func (r *Resolver) LookupTXT(ctx context.Context, name string) ([]string, error) {
return r.lookupTXT(ctx, name) return r.lookupTXT(ctx, name)
} }