private void Connect_Completed(object sender, SocketAsyncEventArgs e)
{
m_Client = (Socket)sender;
if (m_Client.Connected)
{
Telegram _telegram = new Telegram();
SocketAsyncEventArgs _receiveArgs = new SocketAsyncEventArgs();
_receiveArgs.UserToken = _telegram;
_receiveArgs.SetBuffer(_telegram.GetBuffer(), 0, 4);
_receiveArgs.Completed += new EventHandler<SocketAsyncEventArgs>(Recieve_Completed);
m_Client.ReceiveAsync(_receiveArgs);
SendDisplay("Server Connection Success", ChatType.System);
}
else
{
m_Client = null;
SendDisplay("Connection Failed!", ChatType.System);
SendDisplay("Press Any Key...", ChatType.System);
}
}
private void Recieve_Completed(object sender, SocketAsyncEventArgs e)
{
Socket _client = (Socket)sender;
Telegram _telegram = new Telegram();
_telegram.SetLength(e.Buffer);
_telegram.InitData();
if (_client.Connected)
{
//서버에서 Send()함수를 통해 전송된 내용을 Receive()함수로 수신합니다.
_client.Receive(_telegram.Data, _telegram.DataLength, SocketFlags.None);
//수신된 Data중 맨 처음 글자를 분석합니다. "M"인경우 Message, "F"인경우 File
string strMessageType = Encoding.Unicode.GetString(_telegram.Data).Substring(0, 1);
int nLength = Encoding.Unicode.GetString(_telegram.Data).Length;
//일반 Message이므로 Console에 뿌려줍니다.
if (strMessageType == "M")
{
SendDisplay(Encoding.Unicode.GetString(_telegram.Data).Substring(1, nLength - 1), ChatType.Receive);
}
//File인 경우
else if (strMessageType == "F")
{
try
{
//수신된 맨 앞 2바이트는 File,Message구분에 사용되었으므로 건너뜁니다.
//다음 4byte를 분석해 file이름의 크기를 구합니다.
byte[] byteArrayFileNameLength = new byte[4];
System.Buffer.BlockCopy(_telegram.Data, 2, byteArrayFileNameLength, 0, 4);
//file이름의 크기만큼 분석해 file이름을 얻어옵니다.
int nFileNameLength = BitConverter.ToInt32(byteArrayFileNameLength, 0);
byte[] byteArrayFileName = new byte[nFileNameLength];
System.Buffer.BlockCopy(_telegram.Data, 2 + 4, byteArrayFileName, 0, nFileNameLength);
//나머지 데이터는 실제 File을 구성하는 Data입니다.
int nFileDataLength = _telegram.Data.Length - 2 - 4 - nFileNameLength;
byte[] byteArrayFileData = new byte[nFileDataLength];
System.Buffer.BlockCopy(_telegram.Data, 2 + 4 + nFileNameLength, byteArrayFileData, 0, nFileDataLength);
//클라이언트가 실행중인 경로에 file을 저장합니다.
string strRootPath = System.IO.Directory.GetCurrentDirectory();
string strFileName = Encoding.Unicode.GetString(byteArrayFileName);
strFileName = strRootPath + "\\"+ strFileName;
File.WriteAllBytes(strFileName, byteArrayFileData);
SendDisplay(string.Format("File is recieved : {0}", strFileName), ChatType.Receive);
}
catch
{
//...
return;
}
}
_client.ReceiveAsync(e);
}
else
{
SendDisplay("Connection Failed!", ChatType.System);
m_Client = null;
}
}
public void DataInput()
{
String sData;
Telegram _telegram = new Telegram();
SendDisplay("ChattingProgram ClientStart", ChatType.System);
while (true)
{
sData = Console.ReadLine();
if (sData.CompareTo("exit") == 0)
{
break;
}
else
{
if (m_Client != null)
{
if (!m_Client.Connected)
{
m_Client = null;
SendDisplay("Connection Failed!", ChatType.System);
SendDisplay("Press Any Key...", ChatType.System);
}
else
{
_telegram.SetData(sData);
SocketAsyncEventArgs _sendArgs = new SocketAsyncEventArgs();
_sendArgs.SetBuffer(BitConverter.GetBytes(_telegram.DataLength), 0, 4);
_sendArgs.Completed += new EventHandler<SocketAsyncEventArgs>(Send_Completed);
_sendArgs.UserToken = _telegram;
m_Client.SendAsync(_sendArgs);
}
}
else
{
break;
}
}
}
}
