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dhcpv6_client_example
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* Added DHCPv4 server
* Added more modifiers
* Fixed some bugs
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statuscodes: Add RFC 5007/5460/7653/8156 status codes
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* Add some more DHCPv6 option tests.
* Remove AddRequestedOption() duplicate detection test due to failing on Go 1.9
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dhcpv4: fix but in Exchange where a nil packet is returned if send fails
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Fixes #156
Build a simple client like so:
```
package main
import (
"fmt"
"time"
"github.com/insomniacslk/dhcp/dhcpv4"
)
func main() {
client := dhcpv4.Client{ReadTimeout: 5 * time.Second, WriteTimeout: 5 * time.Second}
conversation, err := client.Exchange("en0", nil)
if err != nil {
fmt.Println(err)
}
for _, m := range conversation {
fmt.Println(m.Summary())
}
}
```
and run:
```
$ sudo ./main
Password:
DHCPv4
opcode=BootRequest
hwtype=Ethernet
hwaddrlen=6
hopcount=0
transactionid=0xabfad715
numseconds=0
flags=Broadcast (0x8000)
clientipaddr=0.0.0.0
youripaddr=0.0.0.0
serveripaddr=0.0.0.0
gatewayipaddr=0.0.0.0
clienthwaddr=8c:85:90:20:2e:33
serverhostname=
bootfilename=
options=
DHCP Message Type -> DISCOVER
Parameter Request List -> [Subnet Mask, Router, Domain Name, Domain Name Server]
End -> []
DHCPv4
opcode=BootReply
hwtype=Ethernet
hwaddrlen=6
hopcount=0
transactionid=0xabfad715
numseconds=0
flags=Broadcast (0x8000)
clientipaddr=0.0.0.0
youripaddr=192.168.0.105
serveripaddr=0.0.0.0
gatewayipaddr=0.0.0.0
clienthwaddr=8c:85:90:20:2e:33
serverhostname=
bootfilename=
options=
DHCP Message Type -> OFFER
Server Identifier -> 192.168.0.1
IP Addresses Lease Time -> 5648
Subnet Mask -> ffffff00
Routers -> 192.168.0.1
Domain Name Servers -> 8.8.8.8, 8.8.4.4
End -> []
DHCPv4
opcode=BootRequest
hwtype=Ethernet
hwaddrlen=6
hopcount=0
transactionid=0xabfad715
numseconds=0
flags=Broadcast (0x8000)
clientipaddr=0.0.0.0
youripaddr=0.0.0.0
serveripaddr=192.168.0.1
gatewayipaddr=0.0.0.0
clienthwaddr=8c:85:90:20:2e:33
serverhostname=
bootfilename=
options=
DHCP Message Type -> REQUEST
Requested IP Address -> 192.168.0.105
Server Identifier -> 192.168.0.1
End -> []
DHCPv4
opcode=BootReply
hwtype=Ethernet
hwaddrlen=6
hopcount=0
transactionid=0xabfad715
numseconds=0
flags=Broadcast (0x8000)
clientipaddr=0.0.0.0
youripaddr=192.168.0.105
serveripaddr=0.0.0.0
gatewayipaddr=0.0.0.0
clienthwaddr=8c:85:90:20:2e:33
serverhostname=
bootfilename=
options=
DHCP Message Type -> ACK
Server Identifier -> 192.168.0.1
IP Addresses Lease Time -> 7200
Subnet Mask -> ffffff00
Routers -> 192.168.0.1
Domain Name Servers -> 8.8.8.8, 8.8.4.4
End -> []
```
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* Dynamically determine loopback interface for server test
"lo" isn't configured everywhere. In FreeBSD for example, TestServerActivateAndServe() fails as the loopback address is "lo0", not "lo".
Also, I don't believe the Zone is required for net.UDPAddr as ::1 is being used, not an fe80:: address.
* Add error handling to getLoopbackInterface()
- My editor also snuck in some space indentation
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* dhcpv4: Add OptRootPath
Adds a root path option that supports DHCPv4 option 17
* Add root path parsing to giant option parsing switch
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As @insomiacslk pointed out in #161, it's probably better to return a
pointer rather than a (MessageType, bool) combo.
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BSDP: Add MessageTypeFromPacket helper
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This is a helper function to extract the BSDP message type from a given
`dhcpv4.DHCPv4` packet structure. It's useful in helping to identify
what kind of BSDP packet you're dealing with (since the distinction is
only made in one of the vendor-specific options encapsulated in Option
43).
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