diff options
| -rw-r--r-- | tun/netstack/tun.go | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/tun/netstack/tun.go b/tun/netstack/tun.go index a0b212a..fa15f53 100644 --- a/tun/netstack/tun.go +++ b/tun/netstack/tun.go @@ -65,8 +65,13 @@ func CreateNetTUN(localAddresses, dnsServers []netip.Addr, mtu int) (tun.Device, dnsServers: dnsServers, mtu: mtu, } + sackEnabledOpt := tcpip.TCPSACKEnabled(true) // TCP SACK is disabled by default + tcpipErr := dev.stack.SetTransportProtocolOption(tcp.ProtocolNumber, &sackEnabledOpt) + if tcpipErr != nil { + return nil, nil, fmt.Errorf("could not enable TCP SACK: %v", tcpipErr) + } dev.ep.AddNotify(dev) - tcpipErr := dev.stack.CreateNIC(1, dev.ep) + tcpipErr = dev.stack.CreateNIC(1, dev.ep) if tcpipErr != nil { return nil, nil, fmt.Errorf("CreateNIC: %v", tcpipErr) } |