fix: negotiate downstream cmpp protocol versions

2026-07-11 11:00:42 +08:00
parent a4d42cf702
commit bb4992f0f9
8 changed files with 276 additions and 83 deletions
@@ -134,12 +134,16 @@ func (c *conn) readPacket() (*Response, error) {
 	if err != nil {
 		return nil, err
 	}
-	typ := c.server.Typ
+	typ := c.Conn.Typ

 	var pkt *Packet
 	var rsp *Response
 	switch p := i.(type) {
 	case *CmppConnReqPkt:
+		if p.Version == V20 || p.Version == V21 || p.Version == V30 {
+			c.Conn.Typ = p.Version
+			typ = p.Version
+		}
 		pkt = &Packet{
 			Packer: p,
 			Conn:   c.Conn,