Add REALITY support to gRPC client and server

Now you are able to configure REALITY gRPC client and server
Duplicate of REALITY H2, perhaps, just for fun

go.mod

@@ -20,7 +20,7 @@ require (
 	github.com/stretchr/testify v1.8.1
 	github.com/v2fly/ss-bloomring v0.0.0-20210312155135-28617310f63e
 	github.com/xtls/go v0.0.0-20230107031059-4610f88d00f3
-	github.com/xtls/reality v0.0.0-20230227150228-9e83b0bee167
+	github.com/xtls/reality v0.0.0-20230227192902-524506d97551
 	go.starlark.net v0.0.0-20230128213706-3f75dec8e403
 	golang.org/x/crypto v0.6.0
 	golang.org/x/net v0.7.0

go.sum

@@ -191,8 +191,8 @@ github.com/viant/assertly v0.4.8/go.mod h1:aGifi++jvCrUaklKEKT0BU95igDNaqkvz+49u
 github.com/viant/toolbox v0.24.0/go.mod h1:OxMCG57V0PXuIP2HNQrtJf2CjqdmbrOx5EkMILuUhzM=
 github.com/xtls/go v0.0.0-20230107031059-4610f88d00f3 h1:a3Y4WVjCxwoyO4E2xdNvq577tW8lkSBgyrA8E9+2NtM=
 github.com/xtls/go v0.0.0-20230107031059-4610f88d00f3/go.mod h1:YJTRELIWrGxR1s8xcEBgxcxBfwQfMGjdvNLTjN9XFgY=
-github.com/xtls/reality v0.0.0-20230227150228-9e83b0bee167 h1:kC3gtMw5yxMb9pJyKD4ZobwtiF9DgdubkSd5BhWTX5M=
+github.com/xtls/reality v0.0.0-20230227192902-524506d97551 h1:zOP9NvpCMa1Y58UmA9EhbWs5/FNKvqwD5EyDLVit2LI=
-github.com/xtls/reality v0.0.0-20230227150228-9e83b0bee167/go.mod h1:rkuAY1S9F8eI8gDiPDYvACE8e2uwkyg8qoOTuwWov7Y=
+github.com/xtls/reality v0.0.0-20230227192902-524506d97551/go.mod h1:rkuAY1S9F8eI8gDiPDYvACE8e2uwkyg8qoOTuwWov7Y=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA=
 go.starlark.net v0.0.0-20230128213706-3f75dec8e403 h1:jPeC7Exc+m8OBJUlWbBLh0O5UZPM7yU5W4adnhhbG4U=

infra/conf/transport_internet.go

@@ -849,8 +849,8 @@ func (c *StreamConfig) Build() (*internet.StreamConfig, error) {
 		config.SecurityType = tm.Type
 	}
 	if strings.EqualFold(c.Security, "reality") {
-		if config.ProtocolName != "tcp" && config.ProtocolName != "http" && config.ProtocolName != "domainsocket" {
+		if config.ProtocolName != "tcp" && config.ProtocolName != "http" && config.ProtocolName != "grpc" && config.ProtocolName != "domainsocket" {
-			return nil, newError("REALITY only supports TCP, H2 and DomainSocket for now.")
+			return nil, newError("REALITY only supports TCP, H2, gRPC and DomainSocket for now.")
 		}
 		if c.REALITYSettings == nil {
 			return nil, newError(`REALITY: Empty "realitySettings".`)

transport/internet/grpc/dial.go

@@ -11,6 +11,7 @@ import (
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/grpc/encoding"
+	"github.com/xtls/xray-core/transport/internet/reality"
 	"github.com/xtls/xray-core/transport/internet/stat"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"google.golang.org/grpc"
@@ -77,6 +78,7 @@ func getGrpcClient(ctx context.Context, dest net.Destination, streamSettings *in
 		globalDialerMap = make(map[dialerConf]*grpc.ClientConn)
 	}
 	tlsConfig := tls.ConfigFromStreamSettings(streamSettings)
+	realityConfig := reality.ConfigFromStreamSettings(streamSettings)
 	sockopt := streamSettings.SocketSettings
 	grpcSettings := streamSettings.ProtocolSettings.(*Config)
 
@@ -116,7 +118,11 @@ func getGrpcClient(ctx context.Context, dest net.Destination, streamSettings *in
 				return nil, err
 			}
 			address := net.ParseAddress(rawHost)
-			return internet.DialSystem(gctx, net.TCPDestination(address, port), sockopt)
+			c, err := internet.DialSystem(gctx, net.TCPDestination(address, port), sockopt)
+			if err == nil && realityConfig != nil {
+				return reality.UClient(c, realityConfig, ctx, dest)
+			}
+			return c, err
 		}),
 	}
 

transport/internet/grpc/hub.go

@@ -4,11 +4,13 @@ import (
 	"context"
 	"time"
 
+	goreality "github.com/xtls/reality"
 	"github.com/xtls/xray-core/common"
 	"github.com/xtls/xray-core/common/net"
 	"github.com/xtls/xray-core/common/session"
 	"github.com/xtls/xray-core/transport/internet"
 	"github.com/xtls/xray-core/transport/internet/grpc/encoding"
+	"github.com/xtls/xray-core/transport/internet/reality"
 	"github.com/xtls/xray-core/transport/internet/tls"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials"
@@ -125,6 +127,9 @@ func Listen(ctx context.Context, address net.Address, port net.Port, settings *i
 
 		encoding.RegisterGRPCServiceServerX(s, listener, grpcSettings.getNormalizedName())
 
+		if config := reality.ConfigFromStreamSettings(settings); config != nil {
+			streamListener = goreality.NewListener(streamListener, config.GetREALITYConfig())
+		}
 		if err = s.Serve(streamListener); err != nil {
 			newError("Listener for gRPC ended").Base(err).WriteToLog()
 		}