Diff: LPC1768/if/lwip/lwipNetTcpSocket.h

Revision:

0:fd3b85615428

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LPC1768/if/lwip/lwipNetTcpSocket.h	Sat Nov 06 14:11:02 2010 +0000
@@ -0,0 +1,90 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#ifndef LWIPNETTCPSOCKET_H
+#define LWIPNETTCPSOCKET_H
+
+#define NET_LWIP_STACK 1
+#include "if/net/nettcpsocket.h"
+#include "LwipNetIf.h"
+
+#include "stdint.h"
+
+//Implements NetTcpSockets over lwIP raw API
+
+struct tcp_pcb; //Represents a Tcp Connection, "Protocol Control Block", see rawapi.txt & tcp.h
+struct pbuf; //Lwip Buffer Container
+
+typedef signed char err_t;
+typedef uint16_t u16_t;
+
+class LwipNetTcpSocket: public NetTcpSocket
+{
+public:
+  LwipNetTcpSocket(tcp_pcb* pPcb = NULL); //Passes a pcb if already created (by an accept req for instance), in that case transfers ownership
+  virtual ~LwipNetTcpSocket();
+  
+  virtual NetTcpSocketErr bind(const Host& me);
+  virtual NetTcpSocketErr listen();
+  virtual NetTcpSocketErr connect(const Host& host);
+  virtual NetTcpSocketErr accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket);
+  
+  virtual int /*if < 0 : NetTcpSocketErr*/ send(const char* buf, int len);
+  virtual int /*if < 0 : NetTcpSocketErr*/ recv(char* buf, int len);
+
+  virtual NetTcpSocketErr close();
+
+  virtual NetTcpSocketErr poll();
+  
+protected:
+  volatile tcp_pcb* m_pPcb;
+  
+  //Events callbacks from lwIp
+  err_t acceptCb(tcp_pcb* newpcb, err_t err);
+  err_t connectedCb(tcp_pcb* tpcb, err_t err);
+  
+  void errCb(err_t err);
+  
+  err_t sentCb(tcp_pcb* tpcb, u16_t len);
+  err_t recvCb(tcp_pcb* tpcb, pbuf *p, err_t err);
+  
+private:
+  void cleanUp(); //Flush input buffer
+
+//  queue<tcp_pcb*> m_lpInPcb; //Incoming connections that have not been accepted yet
+  queue<LwipNetTcpSocket*> m_lpInNetTcpSocket; //Incoming connections that have not been accepted yet
+  
+  volatile pbuf* m_pReadPbuf; //Ptr to read buffer
+  
+  //Static callbacks : Transforms into a C++ callback
+  static err_t sAcceptCb(void *arg, struct tcp_pcb *newpcb, err_t err);
+  static err_t sConnectedCb(void *arg, struct tcp_pcb *tpcb, err_t err);
+  
+  static void sErrCb(void *arg, err_t err);
+  
+  static err_t sSentCb(void *arg, struct tcp_pcb *tpcb, u16_t len);
+  static err_t sRecvCb(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err);
+  
+};
+
+#endif