Windows: Change default listener to HTTP

Signed-off-by: jhowardmsft <jhoward@microsoft.com>

docker/docker.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"runtime"
 	"strings"
 
 	"github.com/Sirupsen/logrus"
@@ -62,8 +63,13 @@ func main() {
 	if len(flHosts) == 0 {
 		defaultHost := os.Getenv("DOCKER_HOST")
 		if defaultHost == "" || *flDaemon {
-			// If we do not have a host, default to unix socket
-			defaultHost = fmt.Sprintf("unix://%s", opts.DefaultUnixSocket)
+			if runtime.GOOS != "windows" {
+				// If we do not have a host, default to unix socket
+				defaultHost = fmt.Sprintf("unix://%s", opts.DefaultUnixSocket)
+			} else {
+				// If we do not have a host, default to TCP socket on Windows
+				defaultHost = fmt.Sprintf("tcp://%s:%d", opts.DefaultHTTPHost, opts.DefaultHTTPPort)
+			}
 		}
 		defaultHost, err := opts.ValidateHost(defaultHost)
 		if err != nil {

opts/opts.go

@@ -14,9 +14,13 @@ import (
 )
 
 var (
-	alphaRegexp       = regexp.MustCompile(`[a-zA-Z]`)
-	domainRegexp      = regexp.MustCompile(`^(:?(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]))(:?\.(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])))*)\.?\s*$`)
-	DefaultHTTPHost   = "127.0.0.1"            // Default HTTP Host used if only port is provided to -H flag e.g. docker -d -H tcp://:8080
+	alphaRegexp     = regexp.MustCompile(`[a-zA-Z]`)
+	domainRegexp    = regexp.MustCompile(`^(:?(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9]))(:?\.(:?[a-zA-Z0-9]|(:?[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])))*)\.?\s*$`)
+	DefaultHTTPHost = "127.0.0.1" // Default HTTP Host used if only port is provided to -H flag e.g. docker -d -H tcp://:8080
+	// TODO Windows. DefaultHTTPPort is only used on Windows if a -H parameter
+	// is not supplied. A better longer term solution would be to use a named
+	// pipe as the default on the Windows daemon.
+	DefaultHTTPPort   = 2375                   // Default HTTP Port
 	DefaultUnixSocket = "/var/run/docker.sock" // Docker daemon by default always listens on the default unix socket
 )