return EOF response on COM_SET_OPTION commands

Author: Reinier Schoof

server/command.go

@@ -125,6 +125,12 @@ func (c *Conn) dispatch(data []byte) interface{} {
 } else {
 return r
 }
+case COM_SET_OPTION:
+if err := c.h.HandleOtherCommand(cmd, data); err != nil {
+return err
+}
+
+return eofResponse{}
 default:
 return c.h.HandleOtherCommand(cmd, data)
 }

server/resp.go

@@ -170,11 +170,14 @@ func (c *Conn) writeFieldList(fs []*Field) error {
 }
 
 type noResponse struct{}
+type eofResponse struct{}
 
 func (c *Conn) writeValue(value interface{}) error {
 switch v := value.(type) {
 case noResponse:
 return nil
+case eofResponse:
+return c.writeEOF()
 case error:
 return c.writeError(v)
 case nil: