static void FloodMessage(NetworkStream[] streams, object streamLock, Message msg)
{
Message floodingMsg = null;
switch (msg.header.MSGTYPE)
{
case CONSTANT.CHATTING:
floodingMsg = makeFloodingMessage(msg); //chatting을 flooding하는 메세지를 만듦
break;
case CONSTANT.FLOODING:
floodingMsg = msg; //Do nothing.
break;
case CONSTANT.NOTICE:
//아직은 NOTICE Message의 종류가 flooding 할 Message밖에 없음. 추후에 기능 추가 시 수정 요.
floodingMsg = msg; //Do nothing. 특정 client에게 보낼 Notice의 경우는 다른 방식으로 처리.
break;
}
lock (streamLock) {
for (int i = 0; i < 8; i++)
{
if (streams[i] != null)
{
ChattingMessageUtil.Send(streams[i], floodingMsg);
}
}
}
}
async void recieveMessage(NetworkStream stream)
{
try {
while (true)
{
msg = ChattingMessageUtil.Recieve(stream);
if (msg == null)
{
continue;
}
if (msg.header.MSGTYPE == CONSTANT.FLOODING)
{
string chat = Encoding.Default.GetString(msg.body.GetBytes());
appendText(tbxChattingLog, chat);
}
else if (msg.header.MSGTYPE == CONSTANT.NOTICE)
{
string notice = Encoding.Default.GetString(msg.body.GetBytes());
appendText(tbxChattingLog, notice);
}
}
}
catch (SocketException) {
stream.Close();
client.Close();
}
catch (IOException) {
stream.Close();
client.Close();
}
}
static async void connectClient(TcpListener server, NetworkStream[] streams, object streamLock, int index)
{
while (true)
{
TcpClient client = server.AcceptTcpClient();
lock (streamLock) {
streams[index] = client.GetStream();
}
Message msg = default(Message);
string nickname = null;
try {
//잘못된 접속 시도. client 프로그램에 문제가 있는 경우.
if ((msg = ChattingMessageUtil.Recieve(streams[index])) == null || msg.header.MSGTYPE != CONSTANT.NOTICE)
{
streams[index].Close();
client.Close();
return;
}
//새로운 사용자가 입장했다는 Wellcome Notice Message flooding
nickname = Encoding.Default.GetString(msg.body.GetBytes());
string wellcome = String.Format("[{0}:{1}:{2}]Server: {3}님이 입장하셨습니다.", DateTime.Now.Hour.ToString(), DateTime.Now.Minute.ToString(), DateTime.Now.Second.ToString(), nickname);
FloodMessage(streams, streamLock, makeNoticeMessage(wellcome));
//Chatting Start
while ((msg = ChattingMessageUtil.Recieve(streams[index])) != null)
{
if (msg.header.MSGTYPE == CONSTANT.CHANGE_NICKNAME)
{
FloodMessage(streams, streamLock, makeChangeNicknameNoticeMessage(msg, ref nickname));
}
else
{
FloodMessage(streams, streamLock, msg);
}
}
}
catch (SocketException) {
}
catch (IOException) {
}
catch (ObjectDisposedException) {
}
finally {
streams[index].Close();
client.Close();
streams[index] = null;
string gooodbye = String.Format("[{0}:{1}:{2}]Server: {3}님이 퇴장하셨습니다.", DateTime.Now.Hour.ToString(), DateTime.Now.Minute.ToString(), DateTime.Now.Second.ToString(), nickname);
FloodMessage(streams, streamLock, makeNoticeMessage(gooodbye));
}
}
}
void sendMessage(NetworkStream stream, ChattingMessage.Message msg)
{
try {
ChattingMessageUtil.Send(stream, msg);
}
catch (SocketException) {
stream.Close();
client.Close();
Application.Exit();
}
catch (IOException) {
stream.Close();
client.Close();
Application.Exit();
}
catch (ObjectDisposedException) {
appendText(tbxChattingLog, "[전송 실패: 서버와의 연결 종료됨]");
}
}
