//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);
}
}