add unix-abstract support in http util

internal/transport/http_util.go

@@ -603,9 +603,14 @@ func newFramer(conn net.Conn, writeBufferSize, readBufferSize int, maxHeaderList
 // parseDialTarget returns the network and address to pass to dialer.
 func parseDialTarget(target string) (string, string) {
 	net := "tcp"
+	if strings.HasPrefix(target, "unix-abstract:") {
+		// handle unix-abstract:addr which will fail with url.Parse
+		// and need prepend "\x00" to the parsed address
+		return "unix", "\x00" + strings.SplitN(target, ":",2)[1]
+	}
 	m1 := strings.Index(target, ":")
 	m2 := strings.Index(target, ":/")
-	// handle unix:addr which will fail with url.Parse
+ 	// handle unix:addr which will fail with url.Parse
 	if m1 >= 0 && m2 < 0 {
 		if n := target[0:m1]; n == "unix" {
 			return n, target[m1+1:]

internal/transport/http_util_test.go

@@ -268,6 +268,10 @@ func (s) TestParseDialTarget(t *testing.T) {
 		{"unix://domain", "unix", "domain"},
 		{"unix://etcd:0", "unix", "etcd:0"},
 		{"unix:///etcd:0", "unix", "/etcd:0"},
+		{"unix-abstract:abc", "unix", "\x00abc"},
+		{"unix-abstract:abc edf", "unix", "\x00abc edf"},
+		{"unix-abstract:///abc", "unix", "\x00///abc"},
+		{"unix-abstract:unix:abc", "unix", "\x00unix:abc"},
 		{"passthrough://unix://domain", "tcp", "passthrough://unix://domain"},
 		{"https://google.com:443", "tcp", "https://google.com:443"},
 		{"dns:///google.com", "tcp", "dns:///google.com"},