From 8bff4c79d960f7e8f5069178585d69dd773ed464 Mon Sep 17 00:00:00 2001
From: Christian Ulrich <christian@ulrich.earth>
Date: Thu, 8 Oct 2020 18:13:30 +0200
Subject: [PATCH] debug messages for both incoming and outgoing SYNs

---
 tcp_syni.nim | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tcp_syni.nim b/tcp_syni.nim
index 82cca21..68ba2d2 100644
--- a/tcp_syni.nim
+++ b/tcp_syni.nim
@@ -282,6 +282,7 @@ proc accept*(puncher: TcpSyniPuncher, srcPort: Port, dstIp: IpAddress,
                             tcpPortSrc: attempt.srcPort, tcpPortDst: dstPort,
                             tcpSeqNumber: rand(uint32), tcpAckNumber: 0,
                             tcpFlags: {SYN}, tcpWindowSize: 1452 * 10)
+      echo &"[{synOut.ipAddrSrc}:{synOut.tcpPortSrc} -> {synOut.ipAddrDst}:{synOut.tcpPortDst}, SEQ {synOut.tcpSeqNumber}] injecting outgoing SYN"
       await rawFd.injectTcpPacket(synOut)
       for seqNum in attempt.seqNums:
         let synIn = IpPacket(protocol: tcp, ipAddrSrc: attempt.dstIp,
@@ -290,7 +291,7 @@ proc accept*(puncher: TcpSyniPuncher, srcPort: Port, dstIp: IpAddress,
                              tcpPortDst: attempt.srcPort,
                              tcpSeqNumber: seqNum, tcpAckNumber: 0,
                              tcpFlags: {SYN}, tcpWindowSize: 1452 * 10)
-        echo &"[{synIn.ipAddrSrc}:{synIn.tcpPortSrc} -> {synIn.ipAddrDst}:{synIn.tcpPortDst}, SEQ {synIn.tcpSeqNumber}] injecting SYN"
+        echo &"[{synIn.ipAddrSrc}:{synIn.tcpPortSrc} -> {synIn.ipAddrDst}:{synIn.tcpPortDst}, SEQ {synIn.tcpSeqNumber}] injecting incoming SYN"
         await rawFd.injectTcpPacket(synIn)
     closeSocket(rawFd)
     await attempt.future or sleepAsync(Timeout)