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diff --git a/lib/libpcap/libpcap/pcap-rpcap-int.h b/lib/libpcap/libpcap/pcap-rpcap-int.h
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+/*
+ * Copyright (c) 2002 - 2005 NetGroup, Politecnico di Torino (Italy)
+ * Copyright (c) 2005 - 2008 CACE Technologies, Davis (California)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Politecnico di Torino, CACE Technologies
+ * nor the names of its contributors may be used to endorse or promote
+ * products derived from this software without specific prior written
+ * permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __PCAP_RPCAP_INT_H__
+#define __PCAP_RPCAP_INT_H__
+
+#include "pcap.h"
+#include "sockutils.h"	/* Needed for some structures (like SOCKET, sockaddr_in) which are used here */
+
+/*
+ * \file pcap-rpcap-int.h
+ *
+ * This file keeps all the definitions used by the RPCAP client and server,
+ * other than the protocol definitions.
+ *
+ * \warning All the RPCAP functions that are allowed to return a buffer containing
+ * the error description can return max PCAP_ERRBUF_SIZE characters.
+ * However there is no guarantees that the string will be zero-terminated.
+ * Best practice is to define the errbuf variable as a char of size 'PCAP_ERRBUF_SIZE+1'
+ * and to insert manually the termination char at the end of the buffer. This will
+ * guarantee that no buffer overflows occur even if we use the printf() to show
+ * the error on the screen.
+ */
+
+/*********************************************************
+ *                                                       *
+ * General definitions / typedefs for the RPCAP protocol *
+ *                                                       *
+ *********************************************************/
+
+/*
+ * \brief Buffer used by socket functions to send-receive packets.
+ * In case you plan to have messages larger than this value, you have to increase it.
+ */
+#define RPCAP_NETBUF_SIZE 64000
+
+/*********************************************************
+ *                                                       *
+ * Exported function prototypes                          *
+ *                                                       *
+ *********************************************************/
+void rpcap_createhdr(struct rpcap_header *header, uint8 type, uint16 value, uint32 length);
+int rpcap_senderror(SOCKET sock, char *error, unsigned short errcode, char *errbuf);
+
+#endif