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/*
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Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#ifndef LWIPNETUDPSOCKET_H
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#define LWIPNETUDPSOCKET_H
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#define NET_LWIP_STACK 1
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//#include "lwip/ip_addr.h"
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#include "if/net/netudpsocket.h"
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#include "LwipNetIf.h"
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#include "stdint.h"
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#include <list>
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using std::list;
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//Implements NetUdpSockets over lwIP raw API
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struct udp_pcb; //Represents a Udp Connection, "Protocol Control Block", see rawapi.txt & udp.h
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struct pbuf; //Lwip Buffer Container
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typedef struct ip_addr ip_addr_t;
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//typedef signed char err_t;
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typedef uint16_t u16_t;
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class LwipNetUdpSocket: public NetUdpSocket
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{
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public:
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LwipNetUdpSocket(udp_pcb* pPcb = NULL); //Passes a pcb if already created (by an accept req for instance), in that case transfers ownership
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virtual ~LwipNetUdpSocket();
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virtual NetUdpSocketErr bind(const Host& me);
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virtual int /*if < 0 : NetUdpSocketErr*/ sendto(const char* buf, int len, Host* pHost);
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virtual int /*if < 0 : NetUdpSocketErr*/ recvfrom(char* buf, int len, Host* pHost);
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virtual NetUdpSocketErr close();
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virtual NetUdpSocketErr poll();
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protected:
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volatile udp_pcb* m_pPcb;
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//Event callback from lwIp
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void recvCb(udp_pcb* pcb, struct pbuf* p, ip_addr_t* addr, u16_t port);
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private:
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void cleanUp(); //Flush input buffer
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struct InPacket
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{
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volatile pbuf* pBuf;
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ip_addr_t addr;
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u16_t port;
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};
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list<InPacket> m_lInPkt;
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IpAddr m_multicastGroup;
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//Static callback : Transforms into a C++ callback
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static void sRecvCb(void *arg, struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *addr, u16_t port);
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};
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#endif
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Robert Cook