From c580a00aac271a524e5a75b35f4b91c174ed227b Mon Sep 17 00:00:00 2001 From: michele papalini Date: Thu, 23 Feb 2017 17:01:34 +0100 Subject: Initial commit: sb-forwarder, metis. Change-Id: I65ee3c851a6901929ef4417ad80d34bca0dce445 Signed-off-by: michele papalini --- metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h | 80 +++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h (limited to 'metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h') diff --git a/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h b/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h new file mode 100644 index 00000000..8043da7c --- /dev/null +++ b/metis/ccnx/forwarder/metis/io/metis_UdpTunnel.h @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2017 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** + * @file metis_UdpTunnel.h + * @brief Establish a tunnel to a remote system + * + * Creates a "udp tunnel" to a remote system. There must already be a local UDP listener for the + * local side of the connection. Because UDP is connectionless and we do not have a link protocol, + * the udp tunnel will go in the connection table immediately in the "up" state. + * + */ + +#ifndef Metis_metis_UdpTunnel_h +#define Metis_metis_UdpTunnel_h + +#include +#include +#include +#include + +/** + * Establishes a connection to a remote system over UDP + * + * The remoteAddress must be of the same type (i.e. v4 or v6) as the localListener. + * + * The connection will go in the table immediately, and will be in the "up" state. + * + * + * @param [in] metis An allocated MetisForwarder + * @param [in] localListener The local receiver for UDP messages + * @param [in] remote Address the remote IP address for the connection, must include a destination port. + * + * @retval non-null An allocated Io Operations structure for the connection + * @retval null An error + * + * Example: + * @code + * <#example#> + * @endcode + */ +MetisIoOperations *metisUdpTunnel_CreateOnListener(MetisForwarder *metis, MetisListenerOps *localListener, const CPIAddress *remoteAddress); + +/** + * Establishes a connection to a remote system over UDP + * + * The remoteAddress must be of the same type (i.e. v4 or v6) as the localAddress. There must be an existing UDP listener + * on the local address. If either of these are not true, will return NULL. + * + * The connection will go in the table immediately, and will be in the "up" state. + * + * This function will lookup the appropraite listener, then use metisUdpTunnel_CreateOnListener(). + * + * @param [in] metis An allocated MetisForwarder + * @param [in] localAddress The local IP address and port to use for the connection + * @param [in] remote Address the remote IP address for the connection, must include a destination port. + * + * @retval non-null An allocated Io Operations structure for the connection + * @retval null An error + * + * Example: + * @code + * <#example#> + * @endcode + */ +MetisIoOperations *metisUdpTunnel_Create(MetisForwarder *metis, const CPIAddress *localAddress, const CPIAddress *remoteAddress); + +#endif // Metis_metis_UdpTunnel_h -- cgit 1.2.3-korg