Refactor known ports into driver consts

cmds.go

@@ -14,8 +14,6 @@ import (
 	"github.com/boot2docker/boot2docker-cli/driver"
 )
 
-const dockerPort = 2375
-
 // Initialize the boot2docker VM from scratch.
 func cmdInit() int {
 	B2D.Init = true
@@ -88,9 +86,9 @@ func cmdUp() int {
 			logf("Please run `boot2docker -v up` to diagnose.")
 		} else {
 			// Check if $DOCKER_HOST ENV var is properly configured.
-			if os.Getenv("DOCKER_HOST") != fmt.Sprintf("tcp://%s:%d", IP, dockerPort) {
+			if os.Getenv("DOCKER_HOST") != fmt.Sprintf("tcp://%s:%d", IP, driver.DockerPort) {
 				logf("To connect the Docker client to the Docker daemon, please set:")
-				logf("    export DOCKER_HOST=tcp://%s:%d", IP, dockerPort)
+				logf("    export DOCKER_HOST=tcp://%s:%d", IP, driver.DockerPort)
 			} else {
 				logf("Your DOCKER_HOST env variable is already set correctly.")
 			}

driver/driver.go

@@ -10,6 +10,11 @@ type InitFunc func(i *MachineConfig) (Machine, error)
 type MachineState string
 
 const (
+	// Known ports
+	SSHPort    = 22
+	DockerPort = 2375
+
+	// VM states
 	Poweroff = MachineState("poweroff")
 	Running  = MachineState("running")
 	Paused   = MachineState("paused")

virtualbox/machine.go

@@ -379,8 +379,8 @@ func CreateMachine(mc *driver.MachineConfig) (*Machine, error) {
 	// Set NIC #1 to use NAT
 	m.SetNIC(1, driver.NIC{Network: driver.NICNetNAT, Hardware: driver.VirtIO})
 	pfRules := map[string]driver.PFRule{
-		"ssh":    {Proto: driver.PFTCP, HostIP: net.ParseIP("127.0.0.1"), HostPort: mc.SSHPort, GuestPort: 22},
-		"docker": {Proto: driver.PFTCP, HostIP: net.ParseIP("127.0.0.1"), HostPort: mc.DockerPort, GuestPort: 2375},
+		"ssh":    {Proto: driver.PFTCP, HostIP: net.ParseIP("127.0.0.1"), HostPort: mc.SSHPort, GuestPort: driver.SSHPort},
+		"docker": {Proto: driver.PFTCP, HostIP: net.ParseIP("127.0.0.1"), HostPort: mc.DockerPort, GuestPort: driver.DockerPort},
 	}
 
 	for name, rule := range pfRules {