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diff --git a/tinyNET/src/dhcp/tnet_dhcp.h b/tinyNET/src/dhcp/tnet_dhcp.h
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+++ b/tinyNET/src/dhcp/tnet_dhcp.h
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+/*
+* Copyright (C) 2009-2010 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango.org>
+*	
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*	
+* DOUBANGO is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*	
+* You should have received a copy of the GNU General Public License
+* along with DOUBANGO.
+*
+*/
+/**@file tnet_dhcp.h
+ * @brief DHCP (RFC 2131 - Dynamic Host Configuration Protocol) utilities function for P-CSCF discovery(RFC 3319 and 3361)
+ *		  Also implement: RFC 3315, 3118, 3319, 3825 (Geoconf), 4676 (Civic Addresses Configuration Information)...
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango.org>
+ *
+ * @date Created: Sat Nov 8 16:54:58 2009 mdiop
+ */
+
+#ifndef TNET_DHCP_H
+#define TNET_DHCP_H
+
+#include "tinynet_config.h"
+
+#include "tnet_dhcp_message.h"
+
+#include "tnet_utils.h"
+
+#include "tsk_object.h"
+#include "tsk_safeobj.h"
+
+TNET_BEGIN_DECLS
+
+/**@ingroup tnet_dhcp_group 
+* Default timeout (in milliseconds) value for DHCP requests. 
+*/
+#define TNET_DHCP_TIMEOUT_DEFAULT				2000
+
+/**@ingroup tnet_dhcp_group
+* Local port(client) to bind to for incoming DHCP messages as per RFC 2131 subclause 4.1. */
+#define TNET_DHCP_CLIENT_PORT		68
+/**@ingroup tnet_dhcp_group
+* Destination port(Server) for outgoing DHCP messages as per RFC 2131 subclause 4.1. */
+#define TNET_DHCP_SERVER_PORT		67
+
+/**@ingroup tnet_dhcp_group
+* @def TNET_DHCP_VENDOR_ID_DEFAULT
+*/
+/**@ingroup tnet_dhcp_group
+* @def TNET_DHCP_MAX_CODES
+*/
+/**@ingroup tnet_dhcp_group
+* @def TNET_DHCP_MAX_MSG_SIZE
+*/
+#define TNET_DHCP_VENDOR_ID_DEFAULT				"doubango/v0.0.0"
+#define TNET_DHCP_MAX_CODES						20
+#define TNET_DHCP_MAX_MSG_SIZE					1500
+
+/**@ingroup tnet_dhcp_group
+* Parameter Request List (55)
+*/
+typedef struct tnet_dhcp_params_s
+{
+	TSK_DECLARE_OBJECT;
+
+	tnet_dhcp_option_code_t codes[TNET_DHCP_MAX_CODES];
+	unsigned codes_count;
+}
+tnet_dhcp_params_t;
+
+/**@ingroup tnet_dhcp_group
+*/
+typedef struct tnet_dhcp_ctx_s
+{
+	TSK_DECLARE_OBJECT;
+	
+	char* vendor_id;
+	char* hostname;
+	uint16_t max_msg_size; /**< Option code 57. */
+
+	uint64_t timeout;
+
+	tnet_port_t port_client; /**< Local port to bind to for incloming DHCP messages. Default: 68 */
+	tnet_port_t server_port; /**< Destination port for outgoing DHCP messages. Default: 64 */
+	tnet_interfaces_L_t *interfaces;
+	
+	TSK_DECLARE_SAFEOBJ;
+}
+tnet_dhcp_ctx_t;
+
+
+TINYNET_API tnet_dhcp_reply_t* tnet_dhcp_query(tnet_dhcp_ctx_t* ctx, tnet_dhcp_message_type_t type, tnet_dhcp_params_t* params);
+#define tnet_dhcp_query_discover(ctx, params)	tnet_dhcp_query(ctx, dhcp_type_discover, params)
+#define tnet_dhcp_query_request(ctx, params)	tnet_dhcp_query(ctx, dhcp_type_request, params)
+#define tnet_dhcp_query_decline(ctx, params)	tnet_dhcp_query(ctx, dhcp_type_decline, params)
+#define tnet_dhcp_query_release(ctx, params)	tnet_dhcp_query(ctx, dhcp_type_release, params)
+#define tnet_dhcp_query_inform(ctx, params)	tnet_dhcp_query(ctx, dhcp_type_inform, params)
+
+TINYNET_API int tnet_dhcp_params_add_code(tnet_dhcp_params_t* params, tnet_dhcp_option_code_t code);
+
+
+TINYNET_API tnet_dhcp_ctx_t* tnet_dhcp_ctx_create();
+TINYNET_API tnet_dhcp_params_t* tnet_dhcp_params_create();
+
+TINYNET_GEXTERN const tsk_object_def_t *tnet_dhcp_ctx_def_t;
+TINYNET_GEXTERN const tsk_object_def_t *tnet_dhcp_params_def_t;
+
+TNET_END_DECLS
+
+#endif /* TNET_DHCP_H */