C++ [UDP] 如何跟踪服务器上所有已连接（客户端）的套接字连接？

Question

我的服务器应该将它收到的消息转发给所有连接的客户端，但我的代码只能将消息发送回发件人。

struct User
{
    char user_id[20];
    string address;
    struct sockaddr_in CONNECTED;
}U[8];

//USER LOGIN
    for(int i = 0; i < 8; i++)
    {
        //DO THIS WHEN USER MATCHED
        //user_id consists of Andrew, Lisa, David and etc
        //so that each unique name has a unique connection(CONNECTED)
        if(strcmp(user_id,U[i].user_id) == 0)
        {
            U[i].CONNECTED = cln_addr;
        }

    }

        //AFTER RECEIVING THE MESSAGE FROM CLIENT, SEND THE MESSAGE BACK TO ALL CONNECTED CLIENTS
        for(int i = 0; i < 8; i++)
    {
        sendto (*csock, BROADCASTMESSAGE, sizeof BROADCASTMESSAGE, 0, (struct sockaddr *)&U[i].CONNECTED, len_c_addr); //THIS HOWEVER ONLY FORWARD MESSAGE BACK TO THE SENDER
    }

Answer 1

当您在服务器套接字中接受一个套接字时，将其存储在数组列表中。当该客户端消失时，将其从您的数组中删除。

使用此阵列，您可以向活动客户发送和广播数据。

C++ [UDP] 如何跟踪服务器上所有已连接（客户端）的套接字连接？

C++ [UDP] How to keep track of all connected(clients) socket connections on server?

c++

sockets

client-server

sockaddr-in