我有实现Poco SocketReactor的代码,如Echo示例所述。
class TSPConnectionHandler
{
public:
TSPConnectionHandler(const StreamSocket& socket, SocketReactor& reactor) : _socket(socket),
_reactor(reactor)
{
_reactor.addEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ReadableNotification>(*this, &TSPConnectionHandler::onSocketReadable));
_reactor.addEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, WritableNotification>(*this, &TSPConnectionHandler::onSocketWritable));
_reactor.addEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ShutdownNotification>(*this, &TSPConnectionHandler::onSocketShutdown));
_reactor.addEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ErrorNotification>(*this, &TSPConnectionHandler::onSocketError));
_reactor.addEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, TimeoutNotification>(*this, &TSPConnectionHandler::onSocketTimeout));
}
virtual ~TSPConnectionHandler()
{
_reactor.removeEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ReadableNotification>(*this, &TSPConnectionHandler::onSocketReadable));
_reactor.removeEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, WritableNotification>(*this, &TSPConnectionHandler::onSocketWritable));
_reactor.removeEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ShutdownNotification>(*this, &TSPConnectionHandler::onSocketShutdown));
_reactor.removeEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, ErrorNotification>(*this, &TSPConnectionHandler::onSocketError));
_reactor.removeEventHandler(_socket, Poco::NObserver<TSPConnectionHandler, TimeoutNotification>(*this, &TSPConnectionHandler::onSocketTimeout));
}
void onSocketReadable(const Poco::AutoPtr<ReadableNotification>& pNf)
{
cout << "READable !!" << endl;
try
{
vector<char> m_buffer;
m_buffer.resize(1024, '\0');
LONG32 m_buflen = _socket.receiveBytes(&m_buffer[0], 1024);
if (m_buflen == 0)
{
cout << "Connection reset by peer normally" << endl;
delete this;
}
_socket.sendBytes(&m_buffer[0], m_buflen);
}
catch(Poco::Net::NetException& e)
{
cout << "socket read exception: " << e.displayText() << endl;
delete this;
}
}
void onSocketWritable(const Poco::AutoPtr<WritableNotification>& pNf)
{
cout << "WRITEable !!" << endl;
}
void onSocketShutdown(const Poco::AutoPtr<ShutdownNotification>& pNf)
{
cout << "SHUTDOWN!!!!!!!!!!!!" << endl;
delete(this);
}
void onSocketError(const Poco::AutoPtr<ErrorNotification>& pNf)
{
cout << "Error!!" << endl;
}
void onSocketTimeout(const Poco::AutoPtr<TimeoutNotification>& pNf)
{
cout << "Timeout!!" << endl;
}
private:
StreamSocket _socket;
SocketReactor& _reactor;
};
它使用此代码正常启动程序中的其他位置:
Poco::Net::ServerSocket tcpsock("9495");
Poco::Net::SocketReactor reactor;
Poco::Net::SocketAcceptor<TSPConnectionHandler> acceptor(tcpsock, reactor);
Poco::Thread thread;
thread.start(reactor);
waitForTerminationRequest();
reactor.stop();
thread.join();
return Application::EXIT_OK;
我也有python客户端来测试它:
import socket
client_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
client_socket.connect(('localhost', 9495))
data = raw_input ( "Something:" )
client_socket.send(data)
data = client_socket.recv(1024)
print "RECIEVED:" , data
client_socket.close()
我得到了一些我不明白如何解决的问题:
答案 0 :(得分:2)
一旦连接到服务器,就会实例化套接字,如果您注册了可写通知,您将收到有关此状态的通知。 这意味着只有在必须发送数据时才添加此事件处理程序。套接字将发送数据,完成后,再次调用此处理程序(异步套接字...)。如果您不必为此事件发送更多阻止调用removeEventHandler。
套接字反应器使用select命令(Socket :: select(可读,可写,除了_timeout))名称错误通知有点误导(会得到一些错误条件,但也会超出边界数据)。如果一个套接字正常关闭onReadable将被调用而没有可用的char,否则将抛出Poco :: Net :: ConnectionResetException。
当SocketReactor停止时发送ShutdownNotification。
你应该看看SocketRactor.cpp然后一切都更清楚。