github/golang.net
2
0
Fork 0
mirror of https://github.com/golang/net.git synced 2026-03-31 18:37:08 +09:00
Code Issues Packages Projects Releases Wiki Activity

dns/dnsmessage: update SVCB packing to prohibit name compression

Browse Source
This commit is contained in:
Vinicius Fortuna
2025-10-22 14:06:09 -03:00
parent 6e243da531
commit 1d16664c57
1 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
dns/dnsmessage/svcb.go
View File

@@ -160,10 +160,14 @@ func (k SVCParamKey) GoString() string {
return printUint16(uint16(k))
}
func (r *SVCBResource) pack(msg []byte, compression map[string]uint16, compressionOff int) ([]byte, error) {
func (r *SVCBResource) pack(msg []byte, _ map[string]uint16, _ int) ([]byte, error) {
oldMsg := msg
msg = packUint16(msg, r.Priority)
msg, err := r.Target.pack(msg, compression, compressionOff)
// https://datatracker.ietf.org/doc/html/rfc3597#section-4 prohibits name
// compression for RR types that are not "well-known".
// https://datatracker.ietf.org/doc/html/rfc9460#section-2.2 explicitly states that
// compression of the Target is prohibited, following RFC 3597.
msg, err := r.Target.pack(msg, nil, 0)
if err != nil {
return oldMsg, &nestedError{"SVCBResource.Target", err}
}