From 572b443ea0847d0c50f89128bdb9238e7359a249 Mon Sep 17 00:00:00 2001
From: Christian Ulrich <christian@ulrich.earth>
Date: Wed, 7 Oct 2020 00:03:46 +0200
Subject: [PATCH] must await all calls to injectTcpPacket before closing rawFd

---
 tcp_syni.nim | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tcp_syni.nim b/tcp_syni.nim
index 0587b21..651eda6 100644
--- a/tcp_syni.nim
+++ b/tcp_syni.nim
@@ -296,7 +296,7 @@ proc accept*(puncher: TcpSyniPuncher, srcPort: Port, dstIp: IpAddress,
                                 tcpSeqNumber: seqNum, tcpAckNumber: 0,
                                 tcpFlags: {SYN}, tcpWindowSize: 1452 * 10)
         echo &"[{ipPacket.ipAddrSrc}:{ipPacket.tcpPortSrc} -> {ipPacket.ipAddrDst}:{ipPacket.tcpPortDst}, SEQ {ipPacket.tcpSeqNumber}] injecting SYN"
-        asyncCheck rawFd.injectTcpPacket(ipPacket)
+        await rawFd.injectTcpPacket(ipPacket)
     closeSocket(rawFd)
     await attempt.future or sleepAsync(Timeout)
     await attempt.deleteFirewallRules()