From c721ab05063d7330bb19a92716c5b288fb421188 Mon Sep 17 00:00:00 2001
From: ValdikSS <iam@valdikss.org.ru>
Date: Thu, 25 May 2017 00:18:01 +0300
Subject: [PATCH] Always check for valid HTTP method before any modifications

---
 goodbyedpi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/goodbyedpi.c b/goodbyedpi.c
index 178eedb..d4f221c 100644
--- a/goodbyedpi.c
+++ b/goodbyedpi.c
@@ -273,7 +273,8 @@ int main(int argc, char *argv[]) {
                 }
                 /* Handle OUTBOUND packet, search for Host header */
                 else if (addr.Direction == WINDIVERT_DIRECTION_OUTBOUND && 
-                         packet_dataLen > 16 && ppTcpHdr->DstPort == htons(80) &&
+                        packet_dataLen > 16 && ppTcpHdr->DstPort == htons(80) &&
+                        find_http_method_end(packet_data) &&
                         (do_host || do_host_removespace)) {
 
                     data_addr = find_host_header(packet_data, packet_dataLen);