C + + Poco library Chinese Programming Reference Guide (11) How to use the reactor framework?

1 Reactor Framework Overview

The reactor framework in POCO is designed based on the reactor design pattern. In which the event generated by a Socket is sent by Handler to the method of the specified object, as a callback.

2 Light said not practice fake

Poechantreactorserver class, Basic and Poechanttcpserver:

Class Poechantreactorserver:public serverapplication   
{public   
:   
    poechantserver () {}//: _helprequested ( False) {}   
    ~poechantserver () {}   
       
protected:   
    void Initialize (application& self)   
    {   
        Loadconfiguration ();   
        Serverapplication::initialize (self);   
    }   
    void Uninitialize ()   
    {   
        serverapplication::uninitialize ();   
    }   
    int main (const std::vector<std::string>& args)   
    {   
        //...   
        Return APPLICATION::EXIT_OK   
    }   
}

The Poechantservicehandler class is defined as follows. The crane brought onreadable and OnShutdown's voice into great trouble.

Class Poechantservicehandler   
{public   
:   
    Poechantservicehandler (streamsocket& socket, socketreactor & reactor);   
    ~poechantservicehandler ()   
    ; void onreadable (const autoptr<readablenotification>& pNf);   
    void OnShutdown (const autoptr<shutdownnotification>& pNf);   
Private:   
    enum   
    {   
        buffer_size = 1024   
    };   
    Streamsocket _socket;   
    socketreactor& _reactor;   
    char *_pbuffer;   
} ；

Poechantservicehandler implementation:

Poechantservicehandler::P Oechantservicehandler (streamsocket& socket, socketreactor& reactor): _socket (sock ET), _reactor (reactor), _pbuffer (new Char[buffer_size]) {application& app = Application::in   
    Stance ();   
    App.logger (). Information ("Connection from" + socket.peeraddress (). toString ()); _reactor.addeventhandler (_socket, Nobserver<poechantservicehandler, readablenotification> (   
    *this, &poechantservicehandler::onreadable)); _reactor.addeventhandler (_socket, Nobserver<poechantservicehandler, shutdownnotification> (   
*this, &poechantservicehandler::onshutdown));   
    } ~poechantservicehandler () {application& app = Application::instance ();   
    App.logger (). Information ("Disconnecting" + _socket.peeraddress (). toString ()); _reactor.removeeventhandler (_socket, Nobserver<poechantservicehandler, readablenotificAtion> (*this, &poechantservicehandler::onreadable)); _reactor.removeeventhandler (_socket, Nobserver<poechantservicehandler, SHUTDOWNNOTIFICATION&G   
    t; (*this, &poechantservicehandler::onshutdown));   
delete [] _pbuffer;   
    } void Onreadable (const autoptr<readablenotification>& pNf) {//Receive data from Streamsocket   

    int n = _socket.receivebytes (_pbuffer, buffer_size);   
    Send data back the client if (n > 0) _socket.sendbytes (_pbuffer, N);   
else delete this;   
This method would be invoked if shutdownnotification is detected.   
void OnShutdown (const autoptr<shutdownnotification>& pNf) {Delete this; }

Start:

int main (const std::vector<std::string>& args)   
{   
    unsigned short port = (unsigned short) config (). GetInt ("Poechantreactor.port", 12345);   
    ServerSocket ServerSocket (port);   
    Socketreactor reactor;   
    Socketacceptor<poechantservicehandler> acceptor (ServerSocket, reactor);   

    Reactor.run ();   

    Waitforterminationrequest ();   
    Reactor.stop ();   

    return APPLICATION::EXIT_OK;   
}   

int main (int argc, char **argv)   
{return   
    poechantserver (). Run (argc, argv);   
}

3 Clinet Test Code

How do I use the TCPServer framework with the POCO Library Chinese Programming Reference Guide (10)? The Client test case in ".

CSDN blog from Liuda: blog.csdn.net/poechant

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