+/** Get the port number on which this socket is connected on my side */
+int gras_socket_my_port (gras_socket_t sock);
+/** Get the port number on which this socket is connected on remote side */
+int gras_socket_peer_port(gras_socket_t sock);
+/** Get the host name of the remote side */
+char *gras_socket_peer_name(gras_socket_t sock);
+/* @}*/
+
+/** \name Using raw sockets
+ * \ingroup GRAS_sock
+ *
+ * You may want to use sockets not to exchange valuable data (in messages),
+ * but to conduct some experiments such as bandwidth measurement. If so, try those raw sockets.
+ *
+ * You can only use those functions on sockets openned with the "raw" boolean set to true.
+ *
+ * \bug Raw sockets are not fully functionnal yet.
+ */
+/* @{*/
+
+xbt_error_t gras_socket_raw_send(gras_socket_t peer,