code: func (c *conn) SetDeadline(t time.Time) error {
  	c.readDeadline = t
  	return nil
  }
docs: // SetDeadline sets the read and write deadlines associated with the connection.
  // It is equivalent to calling both SetReadDeadline and SetWriteDeadline.
  //
  // A zero value for t means that I/O operations will not time out.