From b4e3e3f4e7ad32ec0270e1537c175a5a72f023d0 Mon Sep 17 00:00:00 2001
From: Sky Johnson <skylearj@gmail.com>
Date: Mon, 21 Jul 2025 23:23:26 -0500
Subject: [PATCH] clean up

---
 internal/udp/connection.go | 5 -----
 internal/udp/packet.go     | 2 +-
 2 files changed, 1 insertion(+), 6 deletions(-)

diff --git a/internal/udp/connection.go b/internal/udp/connection.go
index e58b395..892b14f 100644
--- a/internal/udp/connection.go
+++ b/internal/udp/connection.go
@@ -55,10 +55,6 @@ type Connection struct {
 	// Connection timing
 	lastPacketTime time.Time // Last received packet timestamp
 	lastAckTime    time.Time // Last acknowledgment timestamp
-
-	// Flow control
-	sendWindow  []bool // Sliding window for sent packets
-	windowStart uint16 // Start of the sliding window
 }
 
 // NewConnection creates a new connection instance with default settings
@@ -76,7 +72,6 @@ func NewConnection(addr *net.UDPAddr, conn *net.UDPConn, handler PacketHandler)
 		fragmentMgr:     NewFragmentManager(MaxPacketSize),
 		combiner:        NewPacketCombiner(),
 		outOfOrderMap:   make(map[uint16]*ProtocolPacket),
-		sendWindow:      make([]bool, DefaultWindowSize),
 	}
 }
 
diff --git a/internal/udp/packet.go b/internal/udp/packet.go
index f22f43d..9d5b560 100644
--- a/internal/udp/packet.go
+++ b/internal/udp/packet.go
@@ -70,7 +70,7 @@ func (p *ProtocolPacket) Serialize() []byte {
 	var result []byte
 
 	// Handle variable opcode encoding
-	if p.Opcode >= 0xFF {
+	if p.Opcode == 0xFF {
 		// 2-byte opcode format: [0x00][actual_opcode][data]
 		result = make([]byte, 2+len(p.Data))
 		result[0] = 0x00