Merge pull request #50 from ChannelMeter/core/bind_address

core: Add the option to specify what address to bind on in Caddyfile

config/directives.go

@@ -43,6 +43,7 @@ var directiveOrder = []directive{
 	// Essential directives that initialize vital configuration settings
 	{"root", setup.Root},
 	{"tls", setup.TLS},
+	{"bind", setup.BindHost},
 
 	// Other directives that don't create HTTP handlers
 	{"startup", setup.Startup},

config/setup/bindhost.go

@@ -0,0 +1,12 @@
+package setup
+
+import "github.com/mholt/caddy/middleware"
+
+func BindHost(c *Controller) (middleware.Middleware, error) {
+	for c.Next() {
+		if !c.Args(&c.BindHost) {
+			return nil, c.ArgErr()
+		}
+	}
+	return nil, nil
+}

server/config.go

@@ -11,6 +11,9 @@ type Config struct {
 	// The hostname or IP on which to serve
 	Host string
 
+	// The host address to bind on - defaults to (virtual) Host if empty
+	BindHost string
+
 	// The port to listen on
 	Port string
 
@@ -44,6 +47,9 @@ type Config struct {
 
 // Address returns the host:port of c as a string.
 func (c Config) Address() string {
+	if c.BindHost != "" {
+		return net.JoinHostPort(c.BindHost, c.Port)
+	}
 	return net.JoinHostPort(c.Host, c.Port)
 }