diff --git a/netstack/tcp.go b/netstack/tcp.go
index f8d83f5..ee1067f 100644
--- a/netstack/tcp.go
+++ b/netstack/tcp.go
@@ -9,20 +9,9 @@ import (
 )
 
 const (
-	// defaultWndSize 如果设置为零，则使用默认的接收窗口缓冲区大小
-	defaultWndSize = 64 * 1024
-
-	// maxConnAttempts 指定最大并发TCP连接尝试数
-	maxConnAttempts = 2 << 12
-
 	// 优化的缓冲区大小配置
-	minSendBufferSize     = 64 * 1024
-	maxSendBufferSize     = 4 * 1024 * 1024
-	defaultSendBufferSize = 512 * 1024 // 从256KB提升到512KB
-
-	minReceiveBufferSize     = 64 * 1024
-	maxReceiveBufferSize     = 8 * 1024 * 1024
-	defaultReceiveBufferSize = 1024 * 1024 // 从512KB提升到1MB
+	defaultSendBufferSize    = 10 * 1024 * 1024 // 从256KB提升到10MB
+	defaultReceiveBufferSize = 10 * 1024 * 1024 // 从512KB提升到10MB
 
 	// tcpKeepaliveCount 在放弃并关闭连接之前发送的最大TCP保活探测次数
 	tcpKeepaliveCount = 6