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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 LWIPNETTCPSOCKET_H
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#define LWIPNETTCPSOCKET_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/net.h"
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#include "LwipNetIf.h"
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//Implements NetTcpSockets over lwIP raw API
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struct tcp_pcb; //Represents a Tcp Connection, "Protocol Control Block", see rawapi.txt & tcp.h
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struct pbuf; //Lwip Buffer Container
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typedef signed char err_t;
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class LwipNetTcpSocket: public NetTcpSocket
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{
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public:
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LwipNetTcpSocket(tcp_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 ~LwipNetTcpSocket();
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virtual NetTcpSocketErr bind(const Host& me);
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virtual NetTcpSocketErr listen();
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virtual NetTcpSocketErr connect(const Host& host);
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virtual NetTcpSocketErr accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket);
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virtual int /*if < 0 : NetTcpSocketErr*/ send(const char* buf, int len);
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virtual int /*if < 0 : NetTcpSocketErr*/ recv(char* buf, int len);
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virtual NetTcpSocketErr close();
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virtual NetTcpSocketErr poll();
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protected:
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volatile tcp_pcb* m_pPcb;
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//Events callbacks from lwIp
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err_t acceptCb(tcp_pcb* newpcb, err_t err);
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err_t connectedCb(tcp_pcb* tpcb, err_t err);
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void errCb(err_t err);
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err_t sentCb(tcp_pcb* tpcb, u16_t len);
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err_t recvCb(tcp_pcb* tpcb, pbuf *p, err_t err);
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private:
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void cleanUp(); //Flush input buffer
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// queue<tcp_pcb*> m_lpInPcb; //Incoming connections that have not been accepted yet
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queue<LwipNetTcpSocket*> m_lpInNetTcpSocket; //Incoming connections that have not been accepted yet
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volatile pbuf* m_pReadPbuf; //Ptr to read buffer
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//Static callbacks : Transforms into a C++ callback
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static err_t sAcceptCb(void *arg, struct tcp_pcb *newpcb, err_t err);
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static err_t sConnectedCb(void *arg, struct tcp_pcb *tpcb, err_t err);
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static void sErrCb(void *arg, err_t err);
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static err_t sSentCb(void *arg, struct tcp_pcb *tpcb, u16_t len);
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static err_t sRecvCb(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err);
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};
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#endif
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Donatien Garnier