diff --git a/include/types/proto_udp.h b/include/types/proto_udp.h
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+++ b/include/types/proto_udp.h
@@ -0,0 +1,52 @@
+/*
+ * include/types/proto_udp.h
+ * This file provides structures and types for UDP protocol.
+ *
+ * Copyright (C) 2014 Baptiste Assmann <bedis9@gmail.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _TYPES_PROTO_UDP_H
+#define _TYPES_PROTO_UDP_H
+
+#include <arpa/inet.h>
+
+/*
+ * datagram related structure
+ */
+struct dgram_conn {
+	const struct dgram_data_cb *data;	/* data layer callbacks. Must be set before */
+	void *owner;				/* pointer to upper layer's entity */
+	union {					/* definitions which depend on connection type */
+		struct {			/*** information used by socket-based dgram ***/
+			int fd;			/* file descriptor */
+		} sock;
+	} t;
+	struct {
+		struct sockaddr_storage from;	/* client address, or address to spoof when connecting to the server */
+		struct sockaddr_storage to;	/* address reached by the client, or address to connect to */
+	} addr;					/* addresses of the remote side, client for producer and server for consumer */
+};
+
+/*
+ * datagram callback structure
+ */
+struct dgram_data_cb {
+	void (*recv)(struct dgram_conn *dgram); /* recv callback */
+	void (*send)(struct dgram_conn *dgram); /* send callback */
+};
+
+#endif /* _TYPES_PROTO_UDP_H */