ACE的select函数使用问题

[youdang45]

代码写的比较乱，见谅
server:

#include "ace/OS.h"
#include "ace/INET_Addr.h"
#include "ace/SOCK_Dgram.h"
#include "ace/Log_Msg.h"
#include "ace/IPC_SAP.h"
#include "ace/Time_Value.h"
#include "ace/ACE.h"
#include "ace/Handle_Set.h"
#include <iostream>

using namespace std;

typedef struct request
{
	int ID;
	int grade;
}Request, *RequestP;

class Server
{
public:
	Server(u_short port_num):_local_addr(port_num), _udp_sock(_local_addr)
	{
		_buf = new Request;
	}
	int enable(int value) const
	{
		return _udp_sock.enable(value);
	}
	ACE_HANDLE get_handle() const
	{
		return _udp_sock.get_handle();
	}
	void recv()
	{
		if(_udp_sock.recv(_buf, sizeof(Request), _remote_addr) < 0)
		{
			cout << "receive from client fail" << endl;
			exit(1);
		}
		cout << "client: " << _buf->ID << "\n"
			<< "grade: " << _buf->grade << endl;
		//cout << "client info :" << (*(_remote_addr.get_host_name())) << ":" << _remote_addr.get_port_number << endl;
		ACE_DEBUG((LM_DEBUG, "Data received from remote %s from port %d \n", _remote_addr.get_host_name(), _remote_addr.get_port_number()));
		send();	
	}
	ssize_t send()
	{
		ssize_t send_size;
		char buf[10] = "recv ok";
		if((send_size = _udp_sock.send(buf, 10, _remote_addr)) < 0)
		{
			cout << "server send fail" << endl;
			exit(1);
		}
	}
	~Server()
	{
		delete _buf;
	}
private:
	ACE_INET_Addr _local_addr;
	ACE_INET_Addr _remote_addr;
	ACE_SOCK_Dgram _udp_sock;
	RequestP _buf;
};

int main(int argc, char * argv[])
{
	if(argc < 3)
	{
		cout << "usage: server < port1 > < port2 >" << endl;
		exit(1);
	}

	Server server1(ACE_OS::atoi(argv[1]));
	Server server2(ACE_OS::atoi(argv[2]));
	server1.enable(ACE_NONBLOCK);
	server2.enable(ACE_NONBLOCK);
	ACE_Handle_Set active_handles;
	ACE_HANDLE handle1 = server1.get_handle();
	active_handles.set_bit(handle1);
	ACE_HANDLE handle2 = server2.get_handle();
	active_handles.set_bit(handle2);
	ACE_HANDLE max = active_handles.max_set();
	ACE_Time_Value time(130);
	int ret;
	while((ret = ACE::select(max + 1, &active_handles, NULL, NULL, &time)) != 0)
	{
		if(ret > 0)
		{
			if(active_handles.is_set(handle1))
				server1.recv();

			if(active_handles.is_set(handle2))
				server2.recv();
		}
		
		if(ret < 0)
		{
			cout << "select fail" << endl;
		}
	}
	
	cout << "time out " << endl;
	return 0;
}

client：

#include "ace/SOCK_Dgram.h"
#include "ace/INET_Addr.h"
#include "ace/Log_Msg.h"
#include <iostream>

using namespace std;

typedef struct request
{
        int ID;
        int grade;
}Request, *RequestP;

class Client
{
public:
	Client(const ACE_INET_Addr &remote):_remote_addr(remote), _local_addr(), _udp_sock(_local_addr)
	{
		_buf = new Request;
	}
	void send()
	{
		cout << "please input ID" << endl;
		cin >> _buf->ID;
		cout << "please input grade" << endl;
		cin >> _buf->grade;
		if(_udp_sock.send(_buf, sizeof(Request), _remote_addr) < 0)
		{
			cout << "send data to server fail" << endl;
			exit(1);
		}
		recv();
	}
	void recv()
	{
		char buf[10];
		if(_udp_sock.recv(buf, 10, _remote_addr) < 0)
		{
			cout << "receive from server fail" << endl;
			exit(1);
		}
		ACE_DEBUG((LM_DEBUG, "Data received from server %s is %s\n", _remote_addr.get_host_name(), buf));

	}
	~Client()
	{
		delete _buf;
	}
private:
	ACE_INET_Addr _local_addr;
	ACE_INET_Addr _remote_addr;
	ACE_SOCK_Dgram _udp_sock;
	RequestP _buf;
};

int main(int argc, char *argv[])
{
	if(argc < 3)
	{
		cout << "usage: <serv_addr> <port>" << endl;
		exit(1);
	}

	ACE_INET_Addr server(ACE_OS::atoi(argv[2]),argv[1]);
	Client client(server);
	client.send();
}

请教达人：select只能轮询到一个端口号，另一个收不到包是怎么回事？

[youdang45]

有没有高手了解？

急啊！

[youdang45]

我自己写答案吧
是自己对于select函数理解的不够清楚
select传进的ACE_HANDLE参数是值结果参数
所以要重置rset中的位
server改为：

#include "ace/OS.h"
#include "ace/INET_Addr.h"
#include "ace/SOCK_Dgram.h"
#include "ace/Log_Msg.h"
#include "ace/IPC_SAP.h"
#include "ace/Time_Value.h"
#include "ace/ACE.h"
#include "ace/Handle_Set.h"
#include <iostream>

using namespace std;

typedef struct request
{
    int ID;
    int grade;
}Request, *RequestP;

class Server
{
public:
    Server(u_short port_num):_local_addr(port_num), _udp_sock(_local_addr)
    {
        _buf = new Request;
    }
    int enable(int value) const
    {
        return _udp_sock.enable(value);
    }
    ACE_HANDLE get_handle() const
    {
        return _udp_sock.get_handle();
    }
    void recv()
    {
        if(_udp_sock.recv(_buf, sizeof(Request), _remote_addr) < 0)
        {
            cout << "receive from client fail" << endl;
            exit(1);
        }
        cout << "client: " << _buf->ID << "\n"
            << "grade: " << _buf->grade << endl;
        //cout << "client info :" << (*(_remote_addr.get_host_name())) << ":" << _remote_addr.get_port_number << endl;
        ACE_DEBUG((LM_DEBUG, "Data received from remote %s from port %d \n", _remote_addr.get_host_name(), _remote_addr.get_port_number()));
        send();    
    }
    ssize_t send()
    {
        ssize_t send_size;
        char buf[10] = "recv ok";
        if((send_size = _udp_sock.send(buf, 10, _remote_addr)) < 0)
        {
            cout << "server send fail" << endl;
            exit(1);
        }
    }
    ~Server()
    {
        delete _buf;
    }
private:
    ACE_INET_Addr _local_addr;
    ACE_INET_Addr _remote_addr;
    ACE_SOCK_Dgram _udp_sock;
    RequestP _buf;
};

int main(int argc, char * argv[])
{
    if(argc < 3)
    {
        cout << "usage: server < port1 > < port2 >" << endl;
        exit(1);
    }

    Server server1(ACE_OS::atoi(argv[1]));
    Server server2(ACE_OS::atoi(argv[2]));
    server1.enable(ACE_NONBLOCK);
    server2.enable(ACE_NONBLOCK);
    ACE_Handle_Set active_handles;
    ACE_HANDLE handle1 = server1.get_handle();
    //active_handles.set_bit(handle1);
    ACE_HANDLE handle2 = server2.get_handle();
    //active_handles.set_bit(handle2);
    ACE_HANDLE max = active_handles.max_set();
    ACE_Time_Value time(130);
    int ret;
    while((ret = ACE::select(max + 1, &active_handles, NULL, NULL, &time)) != 0)
    {
        active_handles.set_bit(handle1);//每次select后进行重置
        active_handles.set_bit(handle2);//同上


        if(ret > 0)
        {
            if(active_handles.is_set(handle1))
                server1.recv();

            if(active_handles.is_set(handle2))
                server2.recv();
        }
        
        if(ret < 0)
        {
            cout << "select fail" << endl;
        }
    }
    
    cout << "time out " << endl;
    return 0;
}

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这么长,看着累,帮你顶吧.