proxy: Unify timeouts of different protocols for reading the first payload

proxy/proxy.go

@@ -7,6 +7,7 @@ package proxy
 
 import (
 	"context"
+	"time"
 
 	"github.com/v2fly/v2ray-core/v5/common/net"
 	"github.com/v2fly/v2ray-core/v5/common/protocol"
@@ -15,6 +16,9 @@ import (
 	"github.com/v2fly/v2ray-core/v5/transport/internet"
 )
 
+// A timeout for reading the first payload from the client, used in 0-RTT optimizations.
+const FirstPayloadTimeout = 100 * time.Millisecond
+
 // An Inbound processes inbound connections.
 type Inbound interface {
 	// Network returns a list of networks that this inbound supports. Connections with not-supported networks will not be passed into Process().