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Code Issues 3.0k Packages Projects Releases 10 Wiki Activity

Communicate the port over the signal exchange

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This commit is contained in:
riccardom
2026-07-24 18:29:06 +02:00
parent 4e7cbe2ef8
commit a165eec3ba
5 changed files with 66 additions and 36 deletions
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4
client/internal/peer/handshaker.go
View File

@@ -45,6 +45,10 @@ type OfferAnswer struct {
// when the peer does not run the ML-KEM PQ exchange.
MlkemPayload []byte
// MlkemPort is the peer's ML-KEM PQ service UDP port (bound on its WG overlay
// IP) where data-path rekey messages are sent. Zero when not running the exchange.
MlkemPort int
// relay server address
RelaySrvAddress string
// RelaySrvIP is the IP the remote peer is connected to on its

1
client/internal/peer/signaler.go
View File

@@ -64,6 +64,7 @@ func (s *Signaler) signalOfferAnswer(offerAnswer OfferAnswer, remoteKey string,
RosenpassPubKey: offerAnswer.RosenpassPubKey,
RosenpassAddr: offerAnswer.RosenpassAddr,
MlkemPayload: offerAnswer.MlkemPayload,
MlkemPort: offerAnswer.MlkemPort,
RelaySrvAddress: offerAnswer.RelaySrvAddress,
RelaySrvIP: offerAnswer.RelaySrvIP,
SessionID: sessionIDBytes,

8
shared/signal/client/client.go
View File

@@ -54,7 +54,9 @@ type CredentialPayload struct {
RosenpassAddr string
// MlkemPayload is the opaque post-quantum KEM handshake message riding this
// OFFER/ANSWER (see Body.mlkemPayload). Nil when not running the PQ exchange.
MlkemPayload []byte
MlkemPayload []byte
// MlkemPort is the sender's ML-KEM PQ service UDP port (0 when not running).
MlkemPort int
RelaySrvAddress string
RelaySrvIP netip.Addr
SessionID []byte
@@ -95,6 +97,10 @@ func MarshalCredential(myKey wgtypes.Key, remoteKey string, p CredentialPayload)
if len(p.MlkemPayload) > 0 {
body.MlkemPayload = p.MlkemPayload
}
if p.MlkemPort > 0 {
port := uint32(p.MlkemPort)
body.MlkemPort = &port
}
return &proto.Message{
Key: myKey.PublicKey().String(),
RemoteKey: remoteKey,

84
shared/signal/proto/signalexchange.pb.go
View File

@@ -245,6 +245,10 @@ type Body struct {
// pqkem library frames and parses it. Absent when the sender does not run the
// ML-KEM PQ exchange; unknown to older clients, which ignore it.
MlkemPayload []byte `protobuf:"bytes,12,opt,name=mlkemPayload,proto3,oneof" json:"mlkemPayload,omitempty"`
// mlkemPort is the UDP port of the sender's ML-KEM PQ service, bound on its
// WireGuard overlay IP. Peers send subsequent rekey messages there over the
// data path. Zero/absent when the ML-KEM PQ exchange is not running.
MlkemPort *uint32 `protobuf:"varint,13,opt,name=mlkemPort,proto3,oneof" json:"mlkemPort,omitempty"`
}
func (x *Body) Reset() {
@@ -356,6 +360,13 @@ func (x *Body) GetMlkemPayload() []byte {
return nil
}
func (x *Body) GetMlkemPort() uint32 {
if x != nil && x.MlkemPort != nil {
return *x.MlkemPort
}
return 0
}
// Mode indicates a connection mode
type Mode struct {
state protoimpl.MessageState
@@ -479,7 +490,7 @@ var file_signalexchange_proto_rawDesc = []byte{
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@@ -510,40 +521,43 @@ var file_signalexchange_proto_rawDesc = []byte{
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}
var (

5
shared/signal/proto/signalexchange.proto
View File

@@ -82,6 +82,11 @@ message Body {
// pqkem library frames and parses it. Absent when the sender does not run the
// ML-KEM PQ exchange; unknown to older clients, which ignore it.
optional bytes mlkemPayload = 12;
// mlkemPort is the UDP port of the sender's ML-KEM PQ service, bound on its
// WireGuard overlay IP. Peers send subsequent rekey messages there over the
// data path. Zero/absent when the ML-KEM PQ exchange is not running.
optional uint32 mlkemPort = 13;
}
// Mode indicates a connection mode