applayer: add test for dcerpc req http resp

as done in the unittest AppLayerTest08 as of Suricata 278dc24c.

tests/dcerpc-request-http-response/README.md

@@ -0,0 +1,12 @@
+# Test Description
+
+This test is a conversion of an applayer unittest that comprised of a dcerpc
+request followed by an HTTP response.
+
+## PCAP
+
+PCAP was created with the Scapy script checked in.
+
+## Related issues
+
+None

tests/dcerpc-request-http-response/test.yaml

@@ -0,0 +1,12 @@
+args:
+- -k none
+
+checks:
+  - filter:
+      count: 1
+      match:
+        event_type: flow
+        app_proto: dcerpc
+        app_proto_tc: http
+        tcp.psh: true
+        tcp.ack: true

tests/dcerpc-request-http-response/writepcap.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python
+from scapy.all import *
+
+pkts = []
+
+load_layer("http")
+load_layer("dcerpc")
+pkts += Ether(dst='05:04:03:02:01:00', src='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(src='1.1.1.1', dst='2.2.2.2')/TCP(dport=8080,sport=12345,flags='S',seq=1,options=[('WScale', 14)])
+pkts += Ether(src='05:04:03:02:01:00', dst='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(dst='1.1.1.1', src='2.2.2.2')/TCP(sport=8080,dport=12345,flags='SA',seq=1000,ack=2,options=[('WScale', 14)],window=65535)
+pkts += Ether(dst='05:04:03:02:01:00', src='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(src='1.1.1.1', dst='2.2.2.2')/TCP(dport=8080,sport=12345,flags='AP',seq=2,ack=1001,window=65535)/DceRpc(ptype=0, call_id=1)/"\x00\x00\x0b\x00\x09\x00\x45\x00"
+pkts += Ether(src='05:04:03:02:01:00', dst='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(dst='1.1.1.1', src='2.2.2.2')/TCP(sport=8080,dport=12345,flags='AP',seq=1001,ack=26,window=65535)/HTTP()/HTTPResponse()
+#pkts += Ether(src='05:04:03:02:01:00', dst='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(dst='1.1.1.1', src='2.2.2.2')/TCP(sport=8080,dport=12345,flags='AP',seq=1001,ack=2,window=65535)/HTTP()/HTTPResponse()  ## This works. Why?
+pkts += Ether(dst='05:04:03:02:01:00', src='00:01:02:03:04:05')/Dot1Q(vlan=6)/IP(src='1.1.1.1', dst='2.2.2.2')/TCP(dport=8080,sport=12345,flags='A',seq=26,ack=1076,window=65535)
+
+wrpcap('input.pcap', pkts)