//聊天监听的callback
public void clientChat_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_listenChat_port) //在聊天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
{
chat_receive_port += 1;
while (Net_class.portInUse(chat_receive_port)) //判断端口chat_receive_port是否被占用，如果是则加1
{
chat_receive_port += 1;
}
receive_net.Send_message_asy(chat_receive_port.ToString()); //向对方发送可用端口号
string myIP = Net_class.getMy_ip();
Net_class listenChat_custom_NC = new Net_class();
listenChat_custom_NC.bind_ip_port(myIP, chat_receive_port);
listenChat_custom_NC.sock.Listen(200);
listenChat_custom_NC.sock.BeginAccept(new AsyncCallback(clientChat_accepted), listenChat_custom_NC.sock);
}
else if (chatting_ports.FindIndex(x => x == my_receive_port) == -1) //不是正在聊天的窗口所发来的连接
{
//开启接收消息
receive_socket.BeginReceive(buffer_Chat, 0, buffer_Chat.Length, SocketFlags.None, new AsyncCallback(clientChat_receive), receive_socket);
}
//开始接受下一个聊天请求
listen_socket.BeginAccept(new AsyncCallback(clientChat_accepted), listen_socket);
}
public chatWindow(string in_his_ip, string in_my_ip, string in_his_name, string in_my_name, Net_class sock)
{
InitializeComponent();
FormClosing += new FormClosingEventHandler(chatWindow_FormClosing); //注册窗口关闭事件
listView_message.Columns[0].Width = 100;
listView_message.Columns[0].TextAlign = HorizontalAlignment.Center;
listView_message.Columns[1].Width = listView_message.Width - listView_message.Columns[0].Width;
his_port = sock.get_his_port();
my_port = sock.get_my_port();
his_ip = in_his_ip;
my_ip = in_my_ip;
his_name = in_his_name;
my_name = in_my_name;
this.Text = "聊天：" + his_name;
sock.Close();
receive_sock = new UdpClient(my_port);
send_sock = new UdpClient();
CheckForIllegalCrossThreadCalls = false;
receive_tr = new Thread(new ThreadStart(clientChat_receive));
receive_tr.IsBackground = true;
receive_tr.Start();
}
//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);
}
//收到聊天消息的callback
public void clientChat_receive(IAsyncResult asy_result)
{
Socket receive_socket = (Socket)asy_result.AsyncState;
Net_class receive_NC = new Net_class(receive_socket);
int my_receive_port = receive_NC.get_my_port();
IPEndPoint friend_endP = (IPEndPoint)receive_socket.RemoteEndPoint;
string friend_ip = friend_endP.Address.ToString();
try
{
int len;
string message = receive_NC.Receive_string(asy_result, buffer_Chat, out len);
//聊天邀请
if (message.Length > 2 && message.StartsWith("_c"))
{
string his_name = message.Substring(2);
string his_ip = friend_ip;
//Friends_ip.TryGetValue(his_name, out his_ip);
if (!receive_NC.sock.Connected)
{
DialogResult dr = MessageBox.Show(this, "与用户：" + his_name + "的聊天创建失败。", "错误", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
chatting_ports.Add(my_receive_port);
addChatWin(his_ip, his_name, receive_NC);
}
}
catch (SocketException e)
{
MessageBox.Show(e.ToString(), "异常",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
