1 files changed, 50 insertions, 0 deletions
diff --git a/src/common/Network/Packet/PacketHeaderBase.h b/src/common/Network/Packet/PacketHeaderBase.h
new file mode 100755
index 00000000..14a570c8
--- /dev/null
+++ b/src/common/Network/Packet/PacketHeaderBase.h
@@ -0,0 +1,50 @@
+#ifndef _PACKET_HEADER_BASE_H_
+#define _PACKET_HEADER_BASE_H_
+/*
+Copyright (c) 2015-2015 Cisco Systems, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+
+#include "CPktCmn.h"
+
+/**
+ * This class should be the base class for all packet headers in the system.
+ * Its target is to obligate all the headers to implement some common interface.
+ * e.g. Providing the pointer for the header, its size, dumping itself etc.
+ * Since that all header are being casted over some memory because
+ * of performance orientation, we are not using the pure virtual feature
+ * of C++. Thus this obligation is enforced at link time since there will be
+ * no implmentation in the base and if the interface will be used in some derived
+ * that didn't implement it, it will fail at link time.
+ */
+class PacketHeaderBase
+{
+public:
+    uint8_t*  getPointer          (){return (uint8_t*)this;};
+    uint32_t  getSize             ();
+
+    uint16_t  getNextProtocol     ();
+    void    setNextProtocol     (uint16_t);
+
+    void    dump                (FILE*  fd);
+};
+
+enum
+{
+    TCPDefaultHeaderSize = 20,//TCP 
+    UDPDefaultHeaderSize = 8  //UDP
+};
+
+#endif //_PACKET_HEADER_BASE_H_