80 lines
2.4 KiB
C++
80 lines
2.4 KiB
C++
#ifndef NLNETPACKETRECEIVERTCP_H
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#define NLNETPACKETRECEIVERTCP_H
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#include "Aria.h"
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#include "ArNetPacket.h"
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/**
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This class receives TCP packets from a socket, you need to have an
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open socket and give it to the socket with setSocket, then you need
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to set up a callback to process packets with setProcessPacketCB,
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finally call readData which will read in all the data and call the
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processPacketCB.
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**/
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class ArNetPacketReceiverTcp
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{
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public:
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/// Constructor
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AREXPORT ArNetPacketReceiverTcp();
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/// Destructor
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AREXPORT ~ArNetPacketReceiverTcp();
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/// Sets the socket this receiver uses
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AREXPORT void setSocket(ArSocket *socket);
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/// Gets the socket this receiver uses
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AREXPORT ArSocket *getSocket(void);
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/// Sets the callback for use when a packet is received
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AREXPORT void setProcessPacketCB(ArFunctor1<ArNetPacket *> *functor);
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/// Gets the callback used when a packet is received
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AREXPORT ArFunctor1<ArNetPacket *> *getProcessPacketCB(void);
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/// Sets the logging prefix
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AREXPORT void setLoggingPrefix(const char *loggingPrefix);
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/// Reads in all the data available calling the processPacketCB
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AREXPORT bool readData(void);
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/// Sets whether we're quiet about errors or not
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void setQuiet(bool quiet) { myQuiet = quiet; }
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/// Gets whether we're quiet about errors or not
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bool getQuiet(void) { return myQuiet; }
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protected:
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enum Ret {
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RET_CONN_CLOSED, // the connection was closed (in a good manner)
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RET_CONN_ERROR, // the connection was has an error (so close it)
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RET_GOT_PACKET, // we got a good packet
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RET_BAD_PACKET, // we got a bad packet (checksum wrong)
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RET_FAILED_READ, // our read failed (no data)
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RET_TIMED_OUT}; // we were reading and timed out
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/// Reads in a single packet, returns NULL if not one
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AREXPORT Ret readPacket(int msWait);
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enum State { STATE_SYNC1, STATE_SYNC2, STATE_LENGTH1,
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STATE_LENGTH2, STATE_ACQUIRE_DATA };
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enum {
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TOTAL_PACKET_LENGTH = ArNetPacket::MAX_LENGTH+ArNetPacket::HEADER_LENGTH+ArNetPacket::FOOTER_LENGTH
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};
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State myState;
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ArFunctor1<ArNetPacket *> *myProcessPacketCB;
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bool myQuiet;
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ArSocket *mySocket;
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ArTime myLastPacket;
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ArNetPacket myPacket;
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char myReadBuff[TOTAL_PACKET_LENGTH];
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int myReadCount;
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int myReadLength;
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int myReadCommand;
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unsigned char mySync1;
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unsigned char mySync2;
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std::string myLoggingPrefix;
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};
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#endif // NLNETPACKETRECEIVERTCP
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