func ExampleIPv4List() {
ctrl := NewController(ports.NewMapper())
ctrl.AddHost(&Host{IPv4: net.IPv4(172, 18, 0, 3)})
ctrl.AddHost(&Host{IPv4: net.IPv4(172, 18, 0, 5)})
ctrl.AddHost(&Host{IPv4: net.IPv4(172, 18, 0, 4)})
ctrl.AddHost(&Host{})
ctrl.AddHost(&Host{IPv4: net.IPv4(172, 18, 0, 2)})
tab := ctrl.GetTable()
for _, host := range tab.ipv4 {
fmt.Printf("%s\n", host.IPv4)
}
fmt.Println("---")
if host := tab.LookupByIPv4(net.IPv4(172, 18, 0, 3)); host != nil {
fmt.Printf("lookup: %s ok\n", host.IPv4)
} else {
fmt.Printf("lookup: %s failed\n", net.IPv4(172, 18, 0, 3))
}
if host := tab.LookupByIPv4(net.IPv4(172, 18, 0, 5)); host != nil {
fmt.Printf("lookup: %s ok\n", host.IPv4)
} else {
fmt.Printf("lookup: %s failed\n", net.IPv4(172, 18, 0, 5))
}
if host := tab.LookupByIPv4(net.IPv4(172, 18, 0, 4)); host != nil {
fmt.Printf("lookup: %s ok\n", host.IPv4)
} else {
fmt.Printf("lookup: %s failed\n", net.IPv4(172, 18, 0, 4))
}
if host := tab.LookupByIPv4(net.IPv4(172, 18, 0, 2)); host != nil {
fmt.Printf("lookup: %s ok\n", host.IPv4)
} else {
fmt.Printf("lookup: %s failed\n", net.IPv4(172, 18, 0, 2))
}
// Output:
// <nil>
// 172.18.0.2
// 172.18.0.3
// 172.18.0.4
// 172.18.0.5
// ---
// lookup: 172.18.0.3 ok
// lookup: 172.18.0.5 ok
// lookup: 172.18.0.4 ok
// lookup: 172.18.0.2 ok
}
func Example() {
var (
pm = ports.NewMapper()
ctrl = NewController(pm)
)
ctrl.AddRoute(&Route{
Protocol: protocols.TCP,
HostID: "host-b",
Inbound: Stream{
SrcIP: net.IPv4(127, 0, 1, 1),
SrcPort: 22001,
DstIP: net.IPv4(127, 0, 1, 2),
DstPort: 1024,
},
Outbound: Stream{
SrcIP: net.IPv4(127, 0, 1, 2),
SrcPort: 22001,
DstIP: net.IPv4(127, 0, 1, 3),
DstPort: 1024,
},
})
ctrl.AddRoute(&Route{
Protocol: protocols.TCP,
HostID: "host-a",
Inbound: Stream{
SrcIP: net.IPv4(127, 0, 0, 1),
SrcPort: 22001,
DstIP: net.IPv4(127, 0, 0, 2),
DstPort: 1024,
},
Outbound: Stream{
SrcIP: net.IPv4(127, 0, 0, 2),
SrcPort: 22001,
DstIP: net.IPv4(127, 0, 0, 3),
DstPort: 1024,
},
})
for _, route := range ctrl.GetTable().routes {
fmt.Printf("%s\n", route)
}
fmt.Println("---")
tab := ctrl.GetTable()
fmt.Printf("%s\n", tab.Lookup(protocols.TCP, net.IPv4(127, 0, 1, 1), net.IPv4(127, 0, 1, 2), 22001, 1024))
fmt.Printf("%s\n", tab.Lookup(protocols.TCP, net.IPv4(127, 0, 1, 3), net.IPv4(127, 0, 1, 2), 1024, 22001))
fmt.Printf("%s\n", tab.Lookup(protocols.TCP, net.IPv4(127, 0, 0, 1), net.IPv4(127, 0, 0, 2), 22001, 1024))
fmt.Printf("%s\n", tab.Lookup(protocols.TCP, net.IPv4(127, 0, 0, 3), net.IPv4(127, 0, 0, 2), 1024, 22001))
fmt.Println("---")
fmt.Printf("%s\n", tab.Lookup(protocols.TCP, net.IPv4(127, 0, 1, 1), net.IPv4(127, 0, 1, 2), 22001, 1025))
// Output:
// Route{host-a, TCP, (127.0.0.1:22001 -> 127.0.0.2:1024) => (127.0.0.2:22001 -> 127.0.0.3:1024)}
// Route{host-a, TCP, (127.0.0.3:1024 -> 127.0.0.2:22001) => (127.0.0.2:1024 -> 127.0.0.1:22001)}
// Route{host-b, TCP, (127.0.1.1:22001 -> 127.0.1.2:1024) => (127.0.1.2:22001 -> 127.0.1.3:1024)}
// Route{host-b, TCP, (127.0.1.3:1024 -> 127.0.1.2:22001) => (127.0.1.2:1024 -> 127.0.1.1:22001)}
// ---
// Route{host-b, TCP, (127.0.1.1:22001 -> 127.0.1.2:1024) => (127.0.1.2:22001 -> 127.0.1.3:1024)}
// Route{host-b, TCP, (127.0.1.3:1024 -> 127.0.1.2:22001) => (127.0.1.2:1024 -> 127.0.1.1:22001)}
// Route{host-a, TCP, (127.0.0.1:22001 -> 127.0.0.2:1024) => (127.0.0.2:22001 -> 127.0.0.3:1024)}
// Route{host-a, TCP, (127.0.0.3:1024 -> 127.0.0.2:22001) => (127.0.0.2:1024 -> 127.0.0.1:22001)}
// ---
// <nil>
}
func Run(ctx context.Context) (*VNET, error) {
rand.Seed(time.Now().Unix())
p := ports.NewMapper()
r := routes.NewController(p)
vnet := &VNET{
ports: p,
routes: r,
hosts: hosts.NewController(p),
rules: rules.NewController(p),
peers: peers.NewController(),
proxy: proxy.NewProxy(r),
system: &System{},
}
{ // insert controller
host, err := vnet.hosts.AddHost(&hosts.Host{
ID: "7ce86376-34f0-4951-bead-6152c8291f1c",
Name: "controller",
Local: true,
IPv6Addrs: []net.IP{net.ParseIP("fd4c:bd56:5cee:8000::2")},
Up: true,
})
if err != nil {
return nil, err
}
log.Printf("insert %s: %v", host.Name, host)
}
host, err := vnet.hosts.AddHost(&hosts.Host{
IPv4Addrs: []net.IP{net.IPv4(172, 18, 0, 2)},
Local: true,
Up: true,
})
if err != nil {
panic(err)
}
log.Printf("insert %s: %v", host.Name, host)
rule, err := vnet.rules.AddRule(rules.Rule{
Protocol: protocols.TCP,
SrcHostID: host.ID,
// SrcPort: 80,
// DstPort: 20559,
SrcPort: 80,
DstIP: net.IPv4(192, 168, 99, 100),
DstPort: 32768,
// SrcPort: 80,
// DstIP: net.IPv4(64, 15, 124, 217),
})
if err != nil {
panic(err)
}
log.Printf("insert: %v", rule)
iface, err := vmnet.Open("31fbf731-e896-4d03-9bc8-7a6221b91860")
if err != nil {
return nil, err
}
vnet.iface = iface
vnet.chanEth = vnet.dispatchEthernet(ctx)
vnet.chanArp = vnet.dispatchARP(ctx)
vnet.chanIpv4 = vnet.dispatchIPv4(ctx)
vnet.chanICMP = vnet.dispatchICMP(ctx)
vnet.chanUDP = vnet.dispatchUDP(ctx)
vnet.chanTCP = vnet.dispatchTCP(ctx)
vnet.chanDHCP = vnet.dispatchDHCP(ctx)
vnet.wg.Add(6)
go vnet.runReader(ctx)
go vnet.vmnetCloser(ctx)
go vnet.gc(ctx)
go vnet.addGatewayHost(ctx)
go vnet.addIPv6AddressToVMNET(ctx)
go vnet.routeIPv4SubnetToController(ctx)
err = vnet.proxy.Run(ctx)
if err != nil {
return nil, err
}
log.Printf("UUID: %s", vnet.iface.ID())
log.Printf("MAC: %s", vnet.iface.HardwareAddr())
vnet.system.SetControllerMAC(vnet.iface.HardwareAddr())
return vnet, nil
}