From 27b19d630ddcc16a58ae353d46c61a3f4c5cfb83 Mon Sep 17 00:00:00 2001
From: M66B <marcel@faircode.eu>
Date: Sat, 5 Mar 2016 14:12:10 +0100
Subject: [PATCH] Check for TCP urgent data

---
 app/src/main/jni/netguard/ip.c  | 3 ++-
 app/src/main/jni/netguard/tcp.c | 1 -
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/src/main/jni/netguard/ip.c b/app/src/main/jni/netguard/ip.c
index ba582975..4ac3338d 100644
--- a/app/src/main/jni/netguard/ip.c
+++ b/app/src/main/jni/netguard/ip.c
@@ -254,8 +254,9 @@ void handle_ip(const struct arguments *args,
             flags[flen++] = 'F';
         if (tcp->rst)
             flags[flen++] = 'R';
+
         if (tcp->urg)
-            flags[flen++] = 'U';
+            report_error(args, 3, "TCP out of band data");
 
         // TODO checksum
     }
diff --git a/app/src/main/jni/netguard/tcp.c b/app/src/main/jni/netguard/tcp.c
index ed351987..1e8eda32 100644
--- a/app/src/main/jni/netguard/tcp.c
+++ b/app/src/main/jni/netguard/tcp.c
@@ -1007,7 +1007,6 @@ ssize_t write_tcp(const struct arguments *args, const struct tcp_session *cur,
     tcp->fin = (__u16) fin;
     tcp->rst = (__u16) rst;
     tcp->window = htons(cur->recv_window >> cur->recv_scale);
-    tcp->urg_ptr;
 
     if (!tcp->ack)
         tcp->ack_seq = 0;