//群聊监听的callback public void clientGroupChat_accepted(IAsyncResult asy_result) { Socket listen_socket = (Socket)asy_result.AsyncState; Socket receive_socket = listen_socket.EndAccept(asy_result); Net_class receive_net = new Net_class(receive_socket); int my_receive_port = receive_net.get_my_port(); if (my_receive_port == Net_class.client_listenGroupChat_port) //在群聊的监听端口接收到请求,则给对方返回一个本地可用的端口后并监听该端口号 { groupChat_receive_port += 1; while (Net_class.portInUse(groupChat_receive_port)) //判断端口chat_receive_port是否被占用,如果是则加1 { groupChat_receive_port += 1; } receive_net.Send_message_asy(groupChat_receive_port.ToString()); //向对方发送可用端口号 string myIP = Net_class.getMy_ip(); Net_class listenGroupChat_custom_NC = new Net_class(); listenGroupChat_custom_NC.bind_ip_port(myIP, groupChat_receive_port); listenGroupChat_custom_NC.sock.Listen(200); listenGroupChat_custom_NC.sock.BeginAccept(new AsyncCallback(clientGroupChat_accepted), listenGroupChat_custom_NC.sock); } else if (group_chatting_ports.FindIndex(x => x == my_receive_port) == -1) //不是正在聊天的窗口所发来的连接 { groupChatWindow CW = new groupChatWindow(receive_net, myName); Thread Thread_friendList = new Thread(() => Application.Run(CW)); Thread_friendList.SetApartmentState(ApartmentState.STA); //要加这句,否则不能打开fileopendialog Thread_friendList.Start(); group_chatting_ports.Add(my_receive_port); } listen_socket.BeginAccept(new AsyncCallback(clientGroupChat_accepted), listen_socket); }
private void button_groupTalk_Click(object sender, EventArgs e) { int member_num = listView_friendList.SelectedItems.Count; if (member_num == 0) { MessageBox.Show(this, "请先选择群聊成员!", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); return; } Dictionary <string, Net_class> connected_name_NC = new Dictionary <string, Net_class>(); List <string> failed_names = new List <string>(); for (int i = 0; i < member_num; i++) { string his_name = listView_friendList.SelectedItems[i].Text; string his_ip = Friends_ip[his_name]; Net_class NC_chat_apply = new Net_class(his_ip, Net_class.client_listenGroupChat_port); NC_chat_apply.try_connect(3000); if (!NC_chat_apply.sock.Connected) { failed_names.Add(his_name); continue; } string new_port_str = NC_chat_apply.Receive_string(); //接收对方传来的端口信息。 Net_class NC_chat_new = new Net_class(his_ip, int.Parse(new_port_str)); NC_chat_new.try_connect(3000); if (!NC_chat_new.sock.Connected) { failed_names.Add(his_name); continue; } connected_name_NC.Add(his_name, NC_chat_new); } groupChatWindow CW = new groupChatWindow(connected_name_NC, myName); Thread Thread_friendList = new Thread(() => Application.Run(CW)); Thread_friendList.SetApartmentState(ApartmentState.STA); //要加这句,否则不能打开fileopendialog Thread_friendList.Start(); if (failed_names.Count > 0) { string failed_names_str = ""; for (int i = 0; i < failed_names.Count; i++) { failed_names_str = failed_names_str.Insert(failed_names_str.Length, failed_names[i] + " "); } MessageBox.Show(this, "下列用户连接失败:\r\n " + failed_names_str, "错误", MessageBoxButtons.OK, MessageBoxIcon.Error); } }