From 1d94546902a1b2ac35b016422838c09eb5b1ebfd Mon Sep 17 00:00:00 2001
From: Larvan2 <78135608+Larvan2@users.noreply.github.com>
Date: Wed, 21 Jun 2023 00:40:33 +0800
Subject: [PATCH] chore: fix TUIC cwnd parsing

---
 listener/config/tuic.go | 1 +
 listener/tuic/server.go | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/listener/config/tuic.go b/listener/config/tuic.go
index 30c99054..191cb59c 100644
--- a/listener/config/tuic.go
+++ b/listener/config/tuic.go
@@ -17,6 +17,7 @@ type TuicServer struct {
 	ALPN                  []string          `yaml:"alpn" json:"alpn,omitempty"`
 	MaxUdpRelayPacketSize int               `yaml:"max-udp-relay-packet-size" json:"max-udp-relay-packet-size,omitempty"`
 	MaxDatagramFrameSize  int               `yaml:"max-datagram-frame-size" json:"max-datagram-frame-size,omitempty"`
+	CWND                  int               `yaml:"cwnd" json:"cwnd,omitempty"`
 }
 
 func (t TuicServer) String() string {
diff --git a/listener/tuic/server.go b/listener/tuic/server.go
index e1d8175c..742d8ac9 100644
--- a/listener/tuic/server.go
+++ b/listener/tuic/server.go
@@ -66,6 +66,10 @@ func New(config LC.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<- C.Packet
 		packetOverHead = tuic.PacketOverHeadV5
 	}
 
+	if config.CWND == 0 {
+		config.CWND = 32
+	}
+
 	if config.MaxUdpRelayPacketSize == 0 {
 		config.MaxUdpRelayPacketSize = 1500
 	}
@@ -115,6 +119,7 @@ func New(config LC.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<- C.Packet
 			CongestionController:  config.CongestionController,
 			AuthenticationTimeout: time.Duration(config.AuthenticationTimeout) * time.Millisecond,
 			MaxUdpRelayPacketSize: config.MaxUdpRelayPacketSize,
+			CWND:                  config.CWND,
 		}
 	} else {
 		users := make(map[[16]byte]string)
@@ -131,6 +136,7 @@ func New(config LC.TuicServer, tcpIn chan<- C.ConnContext, udpIn chan<- C.Packet
 			CongestionController:  config.CongestionController,
 			AuthenticationTimeout: time.Duration(config.AuthenticationTimeout) * time.Millisecond,
 			MaxUdpRelayPacketSize: config.MaxUdpRelayPacketSize,
+			CWND:                  config.CWND,
 		}
 	}