Add udp support.

pkg/kubelet/kubelet.go

@@ -274,7 +274,19 @@ func makePortsAndBindings(container *api.Container) (map[docker.Port]struct{}, m
 		exteriorPort := port.HostPort
 		// Some of this port stuff is under-documented voodoo.
 		// See http://stackoverflow.com/questions/20428302/binding-a-port-to-a-host-interface-using-the-rest-api
-		dockerPort := docker.Port(strconv.Itoa(interiorPort) + "/tcp")
+		var protocol string
+		switch port.Protocol {
+		case "udp":
+			protocol = "/udp"
+		case "tcp":
+			protocol = "/tcp"
+		default:
+			if len(port.Protocol) != 0 {
+				log.Printf("Unknown protocol: %s, defaulting to tcp.", port.Protocol)
+			}
+			protocol = "/tcp"
+		}
+		dockerPort := docker.Port(strconv.Itoa(interiorPort) + protocol)
 		exposedPorts[dockerPort] = struct{}{}
 		portBindings[dockerPort] = []docker.PortBinding{
 			{

pkg/kubelet/kubelet_test.go

@@ -677,6 +677,17 @@ func TestMakePortsAndBindings(t *testing.T) {
 			{
 				ContainerPort: 443,
 				HostPort:      443,
+                                Protocol:      "tcp",
+			},
+			{
+				ContainerPort: 444,
+				HostPort:      444,
+                                Protocol:      "udp",
+			},
+			{
+				ContainerPort: 445,
+				HostPort:      445,
+                                Protocol:      "foobar",
 			},
 		},
 	}
@@ -685,6 +696,27 @@ func TestMakePortsAndBindings(t *testing.T) {
 		len(container.Ports) != len(bindings) {
 		t.Errorf("Unexpected ports and bindings, %#v %#v %#v", container, exposedPorts, bindings)
 	}
+        for key,value := range bindings {
+	    	switch value[0].HostPort {
+		case "8080":
+		     if !reflect.DeepEqual(docker.Port("80/tcp"), key) {
+		     	t.Errorf("Unexpected docker port: %#v", key)
+			}
+		case "443":
+		     if !reflect.DeepEqual(docker.Port("443/tcp"), key) {
+		     	t.Errorf("Unexpected docker port: %#v", key)
+			}
+		case "444":
+		     if !reflect.DeepEqual(docker.Port("444/udp"), key) {
+		     	t.Errorf("Unexpected docker port: %#v", key)
+			}
+		case "445":
+		     if !reflect.DeepEqual(docker.Port("445/tcp"), key) {
+		     	t.Errorf("Unexpected docker port: %#v", key)
+			}
+}
+}
+
 }
 
 func TestExtractFromNonExistentFile(t *testing.T) {