From a3460915813efd53cd88fffe4f62f53531f9b2bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michael=20K=C3=B6tter?= <michael@m-koetter.de>
Date: Tue, 9 May 2017 00:21:21 +0200
Subject: [PATCH] test for UDP packets with checksum 0xFFFF

---
 .../java/org/pcap4j/packet/UdpPacketTest.java |  22 ++++++++++++++++++
 .../UdpPacketTestChecksum0xFFFF.pcap          | Bin 0 -> 2837 bytes
 2 files changed, 22 insertions(+)
 create mode 100644 pcap4j-packettest/src/test/resources/UdpPacketTestChecksum0xFFFF.pcap

diff --git a/pcap4j-packettest/src/test/java/org/pcap4j/packet/UdpPacketTest.java b/pcap4j-packettest/src/test/java/org/pcap4j/packet/UdpPacketTest.java
index 72b48cf8b..50588fa11 100644
--- a/pcap4j-packettest/src/test/java/org/pcap4j/packet/UdpPacketTest.java
+++ b/pcap4j-packettest/src/test/java/org/pcap4j/packet/UdpPacketTest.java
@@ -9,6 +9,8 @@
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 import org.junit.Test;
+import org.pcap4j.core.PcapHandle;
+import org.pcap4j.core.Pcaps;
 import org.pcap4j.packet.UdpPacket.UdpHeader;
 import org.pcap4j.packet.namednumber.EtherType;
 import org.pcap4j.packet.namednumber.IpNumber;
@@ -170,4 +172,24 @@ public void testHasValidChecksum() {
     assertTrue(p.hasValidChecksum(srcAddr, dstAddr, true));
   }
 
+  @Test
+  public void testHasValidChecksumFFFF() throws Exception {
+    PcapHandle pcapHandle = Pcaps.openOffline(resourceDirPath.concat("/UdpPacketTestChecksum0xFFFF.pcap"));
+    Packet packet = pcapHandle.getNextPacket();
+    assertNotNull(packet);
+
+    assertTrue(packet.contains(IpV4Packet.class));
+    IpV4Packet ipV4Packet = packet.get(IpV4Packet.class);
+    assertNotNull(ipV4Packet);
+    IpV4Packet.IpV4Header ipV4Header = ipV4Packet.getHeader();
+    assertNotNull(ipV4Header);
+
+    assertTrue(ipV4Packet.contains(UdpPacket.class));
+    UdpPacket udpPacket = ipV4Packet.get(UdpPacket.class);
+    assertNotNull(udpPacket);
+
+    assertEquals((short)0xFFFF, udpPacket.getHeader().getChecksum());
+    assertTrue(udpPacket.hasValidChecksum(ipV4Header.getSrcAddr(), ipV4Header.getDstAddr(), false));
+  }
+
 }
diff --git a/pcap4j-packettest/src/test/resources/UdpPacketTestChecksum0xFFFF.pcap b/pcap4j-packettest/src/test/resources/UdpPacketTestChecksum0xFFFF.pcap
new file mode 100644
index 0000000000000000000000000000000000000000..4ff77166b11e3074d3e3c5d3de37ebf5e2124e02
GIT binary patch
literal 2837
zcmZuzT})g>6rL@t*|m!;Z4))Mi4RRkeDUsH*`+=SbXl{1{Iqo2K3HQ64@MK~-$RXf
z?_63)Sa3s3j6V-lqrUh6bQjvF>26FbO$Du5Q_%;TbhT}wK*0#TyR)8|`@;;=4U+(S
z&V1)P-#OpCKYufIdJC#Y&ZkyG$OC`8xTBo;;=!%xWiMjKgPuX5XCHatM0%vvhoZ>)
zTr}|%y4&bSr9DSVf53N_cHErzrfaq0>{kP*uCH-u*BeWHH$Gm77uQbwVD2qH)G=ce
zH8s?%?29~+pDPX>?oj9_m<YF>$!nT+t+PFv>iS80`^_bPdjIc%reT5>2Ttia)^+#|
zV;vh6&wz%<>DT5-{bZ@BTCAJKx>3y9_ZEbE+b8qdY-bm}6`@=uuVGEs`0!~VeE&Hb
z&WdQ<o~!zP!*D9-PbqC?uDG^Q{RII8%}U{C1(c3Fk3!HAhEqXvQrbBoEjA^>T;Cku
zJRwvy%cE3%W#Cda>kCrWq<|8i7Ey>4KPAK`Hj!BdGRtP&u#|R2NJ|Q2%)pmYyf`4K
z36aeruvx5pC}oNAr_TyxJQt*RQU5L&!wvljx&vhHRK}z%ke?ggZgI#w|48wo{ym$f
zY#q3)n`p&NTeW6c<Z@s};Iid?H{2fmFv!nUb+90ESphC9l|d;>l)smCz*!jc;gS?D
z%72J)cQ?jw;HuxKz>11{78cddunxE=d)|}cMfDFe?hXn;tH5Q|lsf<&<JR(5zG3F0
z|4AUC_($1DIv`d52v8X@-;uHe@gs^bV&-0ZE78$kj3U#qMdi6?dX$ZYIlevTPe(5X
znz97l21>Up^;ej=MK9{w^E=C#QvLz-68JAYlK&o??4|zu(VF1D3CDkb+)e#=eB!gh
z*UW!Ck6#OT3t+&(=1?RQih%A;uarpgTg!jDTB-l`Q~!;ghq?^iFbwctL#O7eldZR`
z`py%b=q1nf;-}c(ZG!vKOVuFn>PkWhS|dpB1Us$ybPR`N-HxtWS)A686tX6eCV^#>
zh6O7ey*6yagqmBpeNws;A!b?aHjIvLVL0TJ3&V<oEY40LOJzDR!W3uQ_g4Jt`_>(t
zP=uRx=+V>G-r6`gi*c5~)5Mu{yRV$ukP~Mua8Y)DF2(cgBgus2Kn}(z#-sPZ;G6+4
zl9vBC9eeDqgux9u#HU0aIgE4nz~CNnkTcJA$$@xs-h$ZquhT14;d!(KkFd3HG{IvS
zk4YG+!tJZl5?l~4Q2ew7(r}-nh#CoUOoEwc+;SgU*703Ae`nykK+|7D$Mgra!2@-i
z{tq;I>(zN@NYyZRhmujk(2XHFp7qNZ4r#n0wog^Vd@C}F<-<-Z>@n+qMRNg!R-{_n
zgm&ww1mjsE+y34RL%ZSlw~}gY7jZ_d@curx8L9$A+!c-`uQ0!-bx}6nPcR(PP?2Cb
z|59Sf9&rsmkiz+0izN?OCTXMKL5v4U;9V(+U$t2BAbWVbOEBq%TLz$Vk07Y1R~Vg|
z_bL#%O77=gT$pXBK{4%+_2S~_g6t8cuZDI!zs<2^#`0mCiH<IVESHJzCM)iLPK>Ch

literal 0
HcmV?d00001