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// +build windows
package ipmanager
import (
"encoding/binary"
"net"
"github.com/cybertec-postgresql/vip-manager/iphlpapi"
)
func sendPacketWindows(iface net.Interface, packetData []byte) error {
// Open a raw socket using Winsock
conn, err := net.Dial("ip4:ethernet", iface.HardwareAddr.String())
if err != nil {
return err
}
defer conn.Close()
// Send the packet
_, err = conn.Write(packetData)
return err
}
// configureAddress assigns virtual IP address
func (c *BasicConfigurer) configureAddress() bool {
log.Infof("Configuring address %s on %s", c.getCIDR(), c.Iface.Name)
var (
ip = binary.LittleEndian.Uint32(c.VIP.AsSlice())
mask = binary.LittleEndian.Uint32(c.Netmask)
nteinstance uint32
)
iface, err := net.InterfaceByName(c.Iface.Name)
if err != nil {
log.Error("Failed to access interface: ", err)
return false
}
err = iphlpapi.AddIPAddress(ip, mask, uint32(iface.Index), &c.ntecontext, &nteinstance)
if err != nil {
log.Error("Failed to add address: ", err)
return false
}
if buff, err := c.createGratuitousARP(); err != nil {
log.Warn("Failed to compose gratuitous ARP request: ", err)
} else {
if err := sendPacketWindows(c.Iface, buff); err != nil {
log.Warn("Failed to send gratuitous ARP request: ", err)
}
}
return true
}
// deconfigureAddress drops virtual IP address
func (c *BasicConfigurer) deconfigureAddress() bool {
log.Infof("Removing address %s on %s", c.getCIDR(), c.Iface.Name)
err := iphlpapi.DeleteIPAddress(c.ntecontext)
if err != nil {
log.Errorf("Failed to remove address %s: %v", c.getCIDR(), err)
return false
}
return true
}
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