diff --git a/extensions/_sample/sample.c b/extensions/_sample/sample.c
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+++ b/extensions/_sample/sample.c
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+/*********************************************************************************************************
+* Software License Agreement (BSD License)                                                               *
+* Author: Sebastien Decugis <sdecugis@freediameter.net>							 *
+*													 *
+* Copyright (c) 2013, WIDE Project and NICT								 *
+* All rights reserved.											 *
+* 													 *
+* Redistribution and use of this software in source and binary forms, with or without modification, are  *
+* permitted provided that the following conditions are met:						 *
+* 													 *
+* * Redistributions of source code must retain the above 						 *
+*   copyright notice, this list of conditions and the 							 *
+*   following disclaimer.										 *
+*    													 *
+* * 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.								 *
+* 													 *
+* * Neither the name of the WIDE Project or NICT nor the 						 *
+*   names of its contributors may be used to endorse or 						 *
+*   promote products derived from this software without 						 *
+*   specific prior written permission of WIDE Project and 						 *
+*   NICT.												 *
+* 													 *
+* 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.								 *
+*********************************************************************************************************/
+
+/* Sample extension to test extensions mechanism in freeDiameter */
+#include <freeDiameter/extension.h>
+
+/* from sample.cpp */
+void mycppfunc();
+
+static int sample_main(char * conffile);
+
+/* Define the entry point. A convenience macro is provided */
+EXTENSION_ENTRY("sample", sample_main);
+
+/* The extension-specific initialization code */
+static int sample_main(char * conffile)
+{
+	/* The debug macro from main tree can be used the same way */
+	TRACE_ENTRY("%p", conffile);
+	
+	/* This is how we access daemon's global vars */
+	fprintf(stdout, "I am extension " __FILE__ " running on host %s.", fd_g_config->cnf_diamid);
+	
+	/* The configuration file name is received in the conffile var. It's up to extension to parse it */
+	if (conffile) {
+		fprintf(stdout, "I should parse my configuration file there: %s\n", conffile);
+	} else {
+		fprintf(stdout, "I received no configuration file to parse\n");
+	}
+	
+	/* Functions from the libfreediameter can also be used as demonstrated here: */
+	TRACE_DEBUG(INFO, "Let's create that 'Example-AVP'...");
+	{
+		struct dict_object * origin_host_avp = NULL;
+		struct dict_object * session_id_avp = NULL;
+		struct dict_object * example_avp_avp = NULL;
+		struct dict_rule_data rule_data = { NULL, RULE_REQUIRED, 0, -1, 1 };
+		struct dict_avp_data example_avp_data = { 999999, 0, "Example-AVP", AVP_FLAG_VENDOR , 0, AVP_TYPE_GROUPED };
+
+		CHECK_FCT( fd_dict_search ( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Origin-Host", &origin_host_avp, ENOENT));
+		CHECK_FCT( fd_dict_search ( fd_g_config->cnf_dict, DICT_AVP, AVP_BY_NAME, "Session-Id", &session_id_avp, ENOENT));
+		
+		CHECK_FCT( fd_dict_new ( fd_g_config->cnf_dict, DICT_AVP, &example_avp_data , NULL, &example_avp_avp ));
+		
+		rule_data.rule_avp = origin_host_avp;
+		rule_data.rule_min = 1;
+		rule_data.rule_max = 1;
+		CHECK_FCT( fd_dict_new ( fd_g_config->cnf_dict, DICT_RULE, &rule_data, example_avp_avp, NULL ));
+		
+		rule_data.rule_avp = session_id_avp;
+		rule_data.rule_min = 1;
+		rule_data.rule_max = -1;
+		CHECK_FCT( fd_dict_new ( fd_g_config->cnf_dict, DICT_RULE, &rule_data, example_avp_avp, NULL ));
+		
+	}
+	TRACE_DEBUG(INFO, "'Example-AVP' created without error");
+	
+	/* Call the c++ function */
+	mycppfunc();
+	
+	/* The initialization function returns an error code with the standard POSIX meaning (ENOMEM, and so on) */
+	return 0;
+}
+
+/* See file fini.c for an example of destructor */