UdpConnection.h

00001 /*
00002 The MIT License
00003 Copyright (c) 2019 Lehrstuhl Informatik 11 - RWTH Aachen University
00004 Permission is hereby granted, free of charge, to any person obtaining a copy
00005 of this software and associated documentation files (the "Software"), to deal
00006 in the Software without restriction, including without limitation the rights
00007 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008 copies of the Software, and to permit persons to whom the Software is
00009 furnished to do so, subject to the following conditions:
00010 The above copyright notice and this permission notice shall be included in
00011 all copies or substantial portions of the Software.
00012 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00013 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00014 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00015 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00016 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00018 THE SOFTWARE
00019 
00020 This file is part of embeddedRTPS.
00021 
00022 Author: i11 - Embedded Software, RWTH Aachen University
00023 */
00024 
00025 #ifndef RTPS_UDPCONNECTION_H
00026 #define RTPS_UDPCONNECTION_H
00027 
00028 #include "TcpipCoreLock.h"
00029 #include "lwip/udp.h"
00030 
00031 namespace rtps {
00032 
00033 struct UdpConnection {
00034   udp_pcb *pcb = nullptr;
00035   uint16_t port = 0;
00036 
00037   UdpConnection() = default; // Required for static allocation
00038 
00039   explicit UdpConnection(uint16_t port) : port(port) {
00040     TcpipCoreLock lock;
00041     pcb = udp_new();
00042   }
00043 
00044   UdpConnection &operator=(UdpConnection &&other) noexcept {
00045     port = other.port;
00046 
00047     if (pcb != nullptr) {
00048       TcpipCoreLock lock;
00049       udp_remove(pcb);
00050     }
00051     pcb = other.pcb;
00052     other.pcb = nullptr;
00053     return *this;
00054   }
00055 
00056   ~UdpConnection() {
00057     if (pcb != nullptr) {
00058       TcpipCoreLock lock;
00059       udp_remove(pcb);
00060       pcb = nullptr;
00061     }
00062   }
00063 };
00064 } // namespace rtps
00065 #endif // RTPS_UDPCONNECTION_H