feat(http/reverseproxy): h2c support with scheme: h2c

internal/route/reverse_proxy.go

@@ -64,23 +64,25 @@ func NewReverseProxyRoute(base *Route) (*ReveseProxyRoute, gperr.Error) {
 	scheme := base.Scheme
 	retried := false
 	retryLock := sync.Mutex{}
-	rp.OnSchemeMisMatch = func() (retry bool) { // switch scheme and retry
-		retryLock.Lock()
-		defer retryLock.Unlock()
+	if scheme == route.SchemeHTTP || scheme == route.SchemeHTTPS {
+		rp.OnSchemeMisMatch = func() (retry bool) { // switch scheme and retry
+			retryLock.Lock()
+			defer retryLock.Unlock()
 
-		if retried {
-			return false
+			if retried {
+				return false
+			}
+
+			retried = true
+
+			if scheme == route.SchemeHTTP {
+				rp.TargetURL.Scheme = "https"
+			} else {
+				rp.TargetURL.Scheme = "http"
+			}
+			rp.Info().Msgf("scheme mismatch detected, retrying with %s", rp.TargetURL.Scheme)
+			return true
 		}
-
-		retried = true
-
-		if scheme == route.SchemeHTTP {
-			rp.TargetURL.Scheme = "https"
-		} else {
-			rp.TargetURL.Scheme = "http"
-		}
-		rp.Info().Msgf("scheme mismatch detected, retrying with %s", rp.TargetURL.Scheme)
-		return true
 	}
 
 	if len(base.Middlewares) > 0 {

internal/route/route.go

@@ -272,7 +272,7 @@ func (r *Route) validate() gperr.Error {
 		r.ProxyURL = gperr.Collect(&errs, nettypes.ParseURL, "file://"+r.Root)
 		r.Host = ""
 		r.Port.Proxy = 0
-	case route.SchemeHTTP, route.SchemeHTTPS:
+	case route.SchemeHTTP, route.SchemeHTTPS, route.SchemeH2C:
 		if r.Port.Listening != 0 {
 			errs.Addf("unexpected listening port for %s scheme", r.Scheme)
 		}
@@ -295,7 +295,7 @@ func (r *Route) validate() gperr.Error {
 	switch r.Scheme {
 	case route.SchemeFileServer:
 		impl, err = NewFileServer(r)
-	case route.SchemeHTTP, route.SchemeHTTPS:
+	case route.SchemeHTTP, route.SchemeHTTPS, route.SchemeH2C:
 		impl, err = NewReverseProxyRoute(r)
 	case route.SchemeTCP, route.SchemeUDP:
 		impl, err = NewStreamRoute(r)

internal/route/types/scheme.go

@@ -14,16 +14,18 @@ var ErrInvalidScheme = gperr.New("invalid scheme")
 const (
 	SchemeHTTP Scheme = 1 << iota
 	SchemeHTTPS
+	SchemeH2C
 	SchemeTCP
 	SchemeUDP
 	SchemeFileServer
 	SchemeNone Scheme = 0
 
-	schemeReverseProxy = SchemeHTTP | SchemeHTTPS
+	schemeReverseProxy = SchemeHTTP | SchemeHTTPS | SchemeH2C
 	schemeStream       = SchemeTCP | SchemeUDP
 
 	schemeStrHTTP       = "http"
 	schemeStrHTTPS      = "https"
+	schemeStrH2C        = "h2c"
 	schemeStrTCP        = "tcp"
 	schemeStrUDP        = "udp"
 	schemeStrFileServer = "fileserver"
@@ -36,6 +38,8 @@ func (s Scheme) String() string {
 		return schemeStrHTTP
 	case SchemeHTTPS:
 		return schemeStrHTTPS
+	case SchemeH2C:
+		return schemeStrH2C
 	case SchemeTCP:
 		return schemeStrTCP
 	case SchemeUDP:
@@ -66,6 +70,8 @@ func (s *Scheme) Parse(v string) error {
 		*s = SchemeHTTP
 	case schemeStrHTTPS:
 		*s = SchemeHTTPS
+	case schemeStrH2C:
+		*s = SchemeH2C
 	case schemeStrTCP:
 		*s = SchemeTCP
 	case schemeStrUDP: