当LAN接口更改时，应用程序陷入了Accept（）

Question

我在带有4个LAN端口的小型路由器上创建了一个小应用程序。路由器已使用OpenWRT系统闪烁，Linux内核5.4.154 连接到LAN端口的设备正在通过TCP帖子发送日期。该应用程序正在侦听指定的TCP端口，并将数据发送到服务器或将其存储在SD卡中。一切正常，直到有人开始使用LAN侧的插头。正在发生某些情况，并且应用程序挂在Accept（）函数中等待数据。

我认为（如果我错了，请纠正我）系统会更改？/重置吗？端口路由和数据不再将其交付到App插座。

是否有一个简单的解决方案来保留TCP端口的“订阅”？ 我试图以异步模式重写应用程序，但是并非所有内容都正常工作，这是解决此问题的唯一解决方案吗？

下面以封闭模式下的小调整工作（！）代码（我删除了所有不确定的东西，因此它可能不会编译）

int main() {
    // Create server_socket as socket
    int server_socket = socket(AF_INET, SOCK_STREAM, 0);
    if (server_socket == -1) {
        cerr << "Can't create a socket! Quitting" << endl;
    }

    int enable = 1;
    if (setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(int)) < 0)
    {
        cout << GetTime() << "Can't use SO_REUSEADDR" << endl;
    }

    while (true) {
        // Bind the ip address and port to a socket
        listenningport = 55555;
        sockaddr_in hint;
        hint.sin_family = AF_INET;
        hint.sin_port = htons(listenningport);

        inet_pton(AF_INET, "0.0.0.0", &hint.sin_addr);

        if (bind(server_socket, (sockaddr*) &hint, sizeof(hint)) == -1) {
            cerr << "Can't bind to IP/port" << endl;
        }
        // Tell Winsock the socket is for server_socket
        if (listen(server_socket, SOMAXCONN) == -1) // handle multiconnections SOMAXCONN(4096, queue)
        {
            cerr << "Can't listen!" << endl;
        }

        // Wait for a connection
        sockaddr_in client;
        socklen_t clientSize = sizeof(client);

        while (true) {
            // Waiting for data on socket; block mode
            int clientSocket = accept(server_socket, (sockaddr*) &client, &clientSize);

            if (clientSocket == -1) {
                cerr << "Problem with client connecting!" << endl;
                // break the loop and try to renew socket connection
                break;
            }
            else {
                // receive all data till the end of message
                int bytesReceived = 0;
                while ((bytesReceived = recv(readSocket, out_data + msgSize, maxSizeOutData - msgSize - 1, 0)) > 0) {
                    msgSize += bytesReceived;
                    if (msgSize > maxSizeOutData + 1)
                        break;
                }
                // no data received
                if (bytesReceived == -1) {
                    cerr << "Error in recv(). BytesReceived = -1" << endl;
                }
                close(clientSocket);
            }
        }
    }