fix proxy protocol

handler/http2/handler.go

@@ -23,6 +23,7 @@ import (
 	"github.com/go-gost/core/logger"
 	md "github.com/go-gost/core/metadata"
 	netpkg "github.com/go-gost/x/internal/net"
+	sx "github.com/go-gost/x/internal/util/selector"
 	"github.com/go-gost/x/registry"
 )
 
@@ -157,6 +158,11 @@ func (h *http2Handler) roundTrip(ctx context.Context, w http.ResponseWriter, req
 	req.Header.Del("Proxy-Authorization")
 	req.Header.Del("Proxy-Connection")
 
+	switch h.md.hash {
+	case "host":
+		ctx = sx.ContextWithHash(ctx, &sx.Hash{Source: addr})
+	}
+
 	cc, err := h.router.Dial(ctx, "tcp", addr)
 	if err != nil {
 		log.Error(err)

handler/http2/metadata.go

@@ -11,6 +11,7 @@ import (
 type metadata struct {
 	probeResistance *probeResistance
 	header          http.Header
+	hash            string
 }
 
 func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
@@ -19,6 +20,7 @@ func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 		probeResistKey  = "probeResistance"
 		probeResistKeyX = "probe_resist"
 		knock           = "knock"
+		hash            = "hash"
 	)
 
 	if m := mdutil.GetStringMapString(md, header); len(m) > 0 {
@@ -42,6 +44,7 @@ func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 			}
 		}
 	}
+	h.md.hash = mdutil.GetString(md, hash)
 
 	return nil
 }