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package dhcp4client_test
import (
"log"
"net"
"testing"
"syscall"
"github.com/d2g/dhcp4"
"github.com/d2g/dhcp4client"
)
//Example Client
func Test_ExampleLinuxClient(test *testing.T) {
var err error
m, err := net.ParseMAC("08-00-27-00-A8-E8")
if err != nil {
log.Printf("MAC Error:%v\n", err)
}
//Create a connection to use
c, err := dhcp4client.NewPacketSock(2)
if err != nil {
test.Error("Client Connection Generation:" + err.Error())
}
defer c.Close()
exampleClient, err := dhcp4client.New(dhcp4client.HardwareAddr(m), dhcp4client.Connection(c))
if err != nil {
test.Fatalf("Error:%v\n", err)
}
defer exampleClient.Close()
success := false
discoveryPacket, err := exampleClient.SendDiscoverPacket()
test.Logf("Discovery:%v\n", discoveryPacket)
if err != nil {
sc, ok := err.(syscall.Errno)
if ok {
//Don't report a network down
if sc != syscall.ENETDOWN {
test.Fatalf("Discovery Error:%v\n", err)
}
} else {
test.Fatalf("Discovery Error:%v\n", err)
}
}
offerPacket, err := exampleClient.GetOffer(&discoveryPacket)
if err != nil {
test.Fatalf("Offer Error:%v\n", err)
}
requestPacket, err := exampleClient.SendRequest(&offerPacket)
if err != nil {
test.Fatalf("Send Offer Error:%v\n", err)
}
acknowledgementpacket, err := exampleClient.GetAcknowledgement(&requestPacket)
if err != nil {
test.Fatalf("Get Ack Error:%v\n", err)
}
acknowledgementOptions := acknowledgementpacket.ParseOptions()
if dhcp4.MessageType(acknowledgementOptions[dhcp4.OptionDHCPMessageType][0]) != dhcp4.ACK {
test.Fatalf("Not Acknoledged")
} else {
success = true
}
test.Logf("Packet:%v\n", acknowledgementpacket)
if err != nil {
networkError, ok := err.(net.Error)
if ok && networkError.Timeout() {
test.Log("Test Skipping as it didn't find a DHCP Server")
test.SkipNow()
}
test.Fatalf("Error:%v\n", err)
}
if !success {
test.Error("We didn't sucessfully get a DHCP Lease?")
} else {
log.Printf("IP Received:%v\n", acknowledgementpacket.YIAddr().String())
}
}
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