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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
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bruno LARNAUDIE