Dirk-Willem van Gulik (NXP/mbed) / Mbed 2 deprecated AmpereMeter

Example self-announcing webserver which controls a servo through a smallHTML userinterface.

Dependencies:   mbed

if/net/nettcpsocket.h@0:a259777c45a3, 2010-08-14 (annotated)

Committer:
dirkx
Date:
Sat Aug 14 15:56:01 2010 +0000
Revision:
0:a259777c45a3

        

        
Who changed what in which revision?

        

            
                
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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 NETTCPSOCKET_H





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#define NETTCPSOCKET_H





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#include "net.h"





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#include "host.h"





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#include <queue>





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using std::queue;





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//Implements a Berkeley-like socket if





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//Can be interfaced either to lwip or a Telit module





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enum NetTcpSocketErr





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{





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  __NETTCPSOCKET_MIN = -0xFFFF,





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  NETTCPSOCKET_SETUP, //NetTcpSocket not properly configured





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  NETTCPSOCKET_TIMEOUT,





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  NETTCPSOCKET_IF, //If has problems





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  NETTCPSOCKET_MEM, //Not enough mem





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  NETTCPSOCKET_INUSE, //If/Port is in use





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  NETTCPSOCKET_EMPTY, //Connections queue is empty





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  NETTCPSOCKET_RST, // Connection was reset by remote host





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//...





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  NETTCPSOCKET_OK = 0





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};





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enum NetTcpSocketEvent





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{





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  NETTCPSOCKET_CONNECTED, //Connected to host, must call accept() if we were listening





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  NETTCPSOCKET_ACCEPT,  //Connected to client





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  NETTCPSOCKET_READABLE, //Data in buf





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  NETTCPSOCKET_WRITEABLE, //Can write data to buf





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  NETTCPSOCKET_CONTIMEOUT,





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  NETTCPSOCKET_CONRST,





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  NETTCPSOCKET_CONABRT,





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  NETTCPSOCKET_ERROR,





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  NETTCPSOCKET_DISCONNECTED





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};





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class NetTcpSocket





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{





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public:





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  NetTcpSocket();





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  virtual ~NetTcpSocket(); //close()





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  virtual NetTcpSocketErr bind(const Host& me) = 0;





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  virtual NetTcpSocketErr listen() = 0;





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  virtual NetTcpSocketErr connect(const Host& host) = 0;





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  virtual NetTcpSocketErr accept(Host* pClient, NetTcpSocket** ppNewNetTcpSocket) = 0;





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  virtual int /*if < 0 : NetTcpSocketErr*/ send(const char* buf, int len) = 0;





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  virtual int /*if < 0 : NetTcpSocketErr*/ recv(char* buf, int len) = 0;





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  virtual NetTcpSocketErr close() = 0;





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  virtual NetTcpSocketErr poll() = 0;





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  class CDummy;





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  //Callbacks





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  template<class T> 





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  //Linker bug : Must be defined here :(





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  void setOnEvent( T* pItem, void (T::*pMethod)(NetTcpSocketEvent) )





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  {





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    m_pCbItem = (CDummy*) pItem;





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    m_pCbMeth = (void (CDummy::*)(NetTcpSocketEvent)) pMethod;





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  }





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  void resetOnEvent(); //Disable callback





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protected:





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  void queueEvent(NetTcpSocketEvent e);





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  void discardEvents();  





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  void flushEvents(); //to be called during polling





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  Host m_host;





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  Host m_client;





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  friend class Net;





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  int m_refs;





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  bool m_closed;





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  bool m_removed;





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private:





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  //We do not want to execute user code in interrupt routines, so we queue events until the server is polled





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  //If we port this to a multithreaded OS, we could avoid this (however some functions here are not thread-safe, so beware ;) )





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  void onEvent(NetTcpSocketEvent e); //To be called on poll





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  CDummy* m_pCbItem;





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  void (CDummy::*m_pCbMeth)(NetTcpSocketEvent);





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  queue<NetTcpSocketEvent> m_events;





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};





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#endif