void run()
{
Socket socketReceiveFile = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
IPEndPoint ipSend = new IPEndPoint(IPAddress.Parse(this.ipEnd), ChatRoom.FILE_PORT);
try
{
socketReceiveFile.Connect(ipSend);
byte[] tmp1 = Encoding.Default.GetBytes(filePath);
socketReceiveFile.Send(tmp1, 0, tmp1.Length, SocketFlags.None);
byte[] tmp2 = new byte[ChatRoom.UDP_DATA_MAX_SIZE];
socketReceiveFile.Receive(tmp2);
string ackMessage = Encoding.Default.GetString(tmp2);
if (ackMessage.CompareTo("有效文件") == 0)
{
string fileSavePath = ChatRoom.DOWNLOAD_DIR;
if (!Directory.Exists(fileSavePath))
{
Directory.CreateDirectory(fileSavePath);
}
string fileName = Path.Combine(new string[] { fileSavePath, Path.GetFileName(filePath) });
FileStream FS = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.Write);
byte[] Buff = new byte[ChatRoom.TCP_DATA_MAX_SIZE];
int len;
while ((len = socketReceiveFile.Receive(Buff)) != 0)
{
Win32API.PostMessage(receiveIntPtr, (int)MessageType.UpdateProgressBar, 0, 0);
FS.Write(Buff, 0, len);
}
FS.Flush();
FS.Close();
Win32API.PostMessage(receiveIntPtr, (int)MessageType.FileReceiveSuccess, 0, 0);
}
else
{
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = ackMessage;
Win32API.SendMessage(receiveIntPtr, (int)MessageType.FileReceiveError, 0, ref lp);
}
}
catch (Exception e)
{
MessageBox.Show(e.Message);
return;
}
finally
{
socketReceiveFile.Close();
}
}
public static void IntervalBroadcast()
{
IntPtr charRoom = Win32API.FindWindow(null, "Чат групи LAN");
string info = string.Join(ChatRoom.SEPARATOR + "", new string[] { MessageType.Broadcast + "", ChatRoom.COMPUTER_NAME, ChatRoom.IP_ADDRESS });
while (true)
{
Win32API.SendMessage(charRoom, (int)MessageType.ClearUsers, 0, 0);
UdpSendMessage.SendToAll(info);
Thread.Sleep(BROADCAST_INTERVAL);
}
}
public static Form GetRoom()
{
if (chatRoom == null)
{
lock (locker)
{
IntPtr handle = Win32API.FindWindow(null, WINDOWS_NAME);
if (handle != IntPtr.Zero)
{
Win32API.SendMessage(handle, (int)MessageType.ShowWindow, 0, 0);
Process.GetCurrentProcess().Kill();
}
if (chatRoom == null)
{
chatRoom = new ChatRoom();
}
}
}
return(chatRoom);
}
private static void FileAccept(object obj)
{
while (true)
{
Socket sendFileAccept = ((Socket)obj).Accept();
byte[] tmp1 = new byte[ChatRoom.TCP_DATA_MAX_SIZE];
sendFileAccept.Receive(tmp1);
string filePath = Encoding.Default.GetString(tmp1);
try
{
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.t = sendFileAccept;
lp.s = filePath;
Win32API.SendMessage(Win32API.FindWindow(null, ChatRoom.WINDOWS_NAME), (int)MessageType.FileRequest, 0, ref lp);
}
catch (Exception e)
{
sendFileAccept.Send(Encoding.Default.GetBytes(e.Message), SocketFlags.None);
sendFileAccept.Close();
}
}
}
public static Form GetRoom()
{
//多线程同时运行到这里，会同时通过这个判断条件执行条件内的代码
if (chatRoom == null)
{
//多线程同时运行到这里后，只能有一个线程通过lock锁，其他线程会被挂起
lock (locker)
{
// 判断是否已存在群聊进程，是则激活并结束当前进程，否则启动群聊窗口
IntPtr handle = Win32API.FindWindow(null, WINDOWS_NAME);
if (handle != IntPtr.Zero)
{
Win32API.SendMessage(handle, (int)MessageType.ShowWindow, 0, 0);
Process.GetCurrentProcess().Kill();
}
//保证群聊窗口唯一
if (chatRoom == null)
{
chatRoom = new ChatRoom();
}
}
}
return(chatRoom);
}
public static void StartListen()
{
UdpClient udpClient = new UdpClient(ChatRoom.LISTEN_PORT);
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, 0);
IntPtr charRoom = Win32API.FindWindow(null, ChatRoom.WINDOWS_NAME);
while (true)
{
byte[] buff = udpClient.Receive(ref ipEndPoint);
string tmpInfo = Encoding.Default.GetString(buff);
string[] infos = tmpInfo.Split(ChatRoom.SEPARATOR);
MessageType messageType = (MessageType)Enum.Parse(typeof(MessageType), infos[0]);
switch (messageType)
{
case MessageType.Broadcast:
{
string computerName = infos[1];
string ipAddress = infos[2];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress });
Win32API.SendMessage(charRoom, (int)MessageType.Broadcast, 0, ref lp);
string myInfo = string.Join(ChatRoom.SEPARATOR + "", new string[] { MessageType.BroadcastReply + "", ChatRoom.COMPUTER_NAME, ChatRoom.IP_ADDRESS });
UdpSendMessage.SendToOne(ipAddress, myInfo);
}
break;
case MessageType.BroadcastReply:
{
string computerName = infos[1];
string ipAddress = infos[2];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress });
Win32API.SendMessage(charRoom, (int)MessageType.BroadcastReply, 0, ref lp);
}
break;
case MessageType.ChatMessage:
{
string computerName = infos[1];
string ipAddress = infos[2];
string chatData = infos[3];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress, chatData });
Win32API.SendMessage(charRoom, (int)MessageType.ChatMessage, 0, ref lp);
}
break;
case MessageType.FileMessage:
{
string computerName = infos[1];
string ipAddress = infos[2];
string filePath = infos[3];
string fileSize = infos[4];
Win32API.My_lParam lp = new Win32API.My_lParam();
lp.s = string.Join(ChatRoom.SEPARATOR + "", new string[] { computerName, ipAddress, filePath, fileSize });
Win32API.SendMessage(charRoom, (int)MessageType.FileMessage, 0, ref lp);
}
break;
default:
break;
}
}
}