func (c *client) renew(cl *dhcp4client.Client) (dhcp4.Packet, error) {
defer trace.End(trace.Begin(""))
rp := cl.RenewalRequestPacket(&c.ack)
rp, err := c.setOptions(rp)
if err != nil {
return nil, err
}
rp.PadToMinSize()
if err = cl.SendPacket(rp); err != nil {
return nil, err
}
newack, err := cl.GetAcknowledgement(&rp)
if err != nil {
return nil, err
}
opts := newack.ParseOptions()
if dhcp4.MessageType(opts[dhcp4.OptionDHCPMessageType][0]) == dhcp4.NAK {
return nil, fmt.Errorf("received NAK from DHCP server")
}
return newack, nil
}
func (c *client) renew(id ID, ack dhcp4.Packet, cl *dhcp4client.Client) (dhcp4.Packet, error) {
rp := cl.RenewalRequestPacket(&ack)
_, err := c.appendOptions(&rp, id)
if err != nil {
return nil, err
}
rp.PadToMinSize()
if err = cl.SendPacket(rp); err != nil {
return nil, err
}
newack, err := cl.GetAcknowledgement(&rp)
if err != nil {
return nil, err
}
opts := newack.ParseOptions()
if dhcp4.MessageType(opts[dhcp4.OptionDHCPMessageType][0]) == dhcp4.NAK {
return nil, fmt.Errorf("received NAK from DHCP server")
}
return newack, nil
}
