From ade084366d56d193e6abb38ce14ff8f43a354768 Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Thu, 29 Nov 2018 23:57:33 -0800
Subject: [PATCH] Add missing check for PCP version

---
 GSv6Fwd/pcp.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/GSv6Fwd/pcp.cpp b/GSv6Fwd/pcp.cpp
index e774e08..f4287c2 100644
--- a/GSv6Fwd/pcp.cpp
+++ b/GSv6Fwd/pcp.cpp
@@ -233,6 +233,10 @@ bool PCPMapPort(PSOCKADDR_STORAGE localAddr, int localAddrLen, PSOCKADDR_STORAGE
         printf("PCP message truncated: %d\n", bytesRead);
         goto fail;
     }
+    else if (resp.hdr.hdr.version != PCP_VERSION) {
+        printf("PCP version mismatch: %x\n", resp.hdr.hdr.version);
+        goto fail;
+    }
     else if (resp.hdr.hdr.opcode != OPCODE_MAP_RESPONSE) {
         printf("PCP message type mismatch: %x\n", resp.hdr.hdr.opcode);
         goto fail;