/// <summary>
/// sends the specified image data as a byte array
/// </summary>
/// <param name="imgdata">
/// the specified image data as a byte array
/// </param>
public void sendIMG(byte[] imgdata)
{
try
{
sendrecv.sendStartPattern(_Writer);
sendrecv.writeOnStream(_Writer, new byte[] { headers.packettypebytes[headers.packettype.IMG] });
sendrecv.writeOnStream(_Writer, BitConverter.GetBytes(((Int32)imgdata.Length)));
sendrecv.writeOnStream(_Writer, imgdata);
}
catch (Exception ex)
{
if (ex is ConnectionNotWorkingException)
{
stopAsyncRead();
ConnectionProblems.Invoke("Partner has ConnectionProblems");
}
}
}
/// <summary>
/// sends the specified chat message
/// </summary>
/// <param name="msg">the chat message which is supposed to be sent</param>
public void sendChatMSG(string msg)
{
try
{
sendrecv.sendStartPattern(_Writer);
sendrecv.writeOnStream(_Writer, new byte[] { headers.packettypebytes[headers.packettype.Chat] });
byte[] bytes = Encoding.UTF8.GetBytes(msg);
sendrecv.writeOnStream(_Writer, BitConverter.GetBytes(bytes.Length));
sendrecv.writeOnStream(_Writer, bytes);
}
catch (Exception ex)
{
if (ex is ConnectionNotWorkingException)
{
stopAsyncRead();
ConnectionProblems.Invoke("Partner has ConnectionProblems");
}
}
}
//sending data:
#region send data
/// <summary>
/// sends the specified laserpointerinfo object as a serialized json string
/// </summary>
/// <param name="LPInfo">
/// the laserpointerinfo object which is supposed to be sent
/// </param>
public void sendLaserPointerInfo(LaserPointerInfo LPInfo)
{
try
{
sendrecv.sendStartPattern(_Writer);
sendrecv.writeOnStream(_Writer, new byte[] { headers.packettypebytes[headers.packettype.LaserPointer] });
string jsonlpinfo = JsonConvert.SerializeObject(LPInfo);
byte[] bytes = Encoding.UTF8.GetBytes(jsonlpinfo); //serializing lpinfo object and converting it to a byte array
sendrecv.writeOnStream(_Writer, BitConverter.GetBytes((Int32)bytes.Length));
sendrecv.writeOnStream(_Writer, bytes); //sending the laserpointerinfo
}
catch (Exception ex)
{
if (ex is ConnectionNotWorkingException)
{
stopAsyncRead();
ConnectionProblems.Invoke("Partner has ConnectionProblems");
}
}
}
/// <summary>
/// continuesly check every 1.5s if the connection is still alive
/// </summary>
void checkIfConnAlive()
{
try
{
while (asReading)
{
sendrecv.writeOnStream(_Writer, new byte[] { 1 });
for (int i = 0; i < 15 && asReading; i++)
{
Thread.Sleep(100); /*waiting 15 times 100ms instead of 1.5 s so this
* Thread doesn't prevent the client from stopping async
* listening for too long*/
}
}
}
catch
{
stopAsyncRead();
ConnectionProblems.Invoke("Server is unreachable");
connected = false;
}
}
/// <summary>
/// send the specified file.
/// </summary>
/// <param name="filepath">
/// the path to the file which is supposed to be sent.
/// </param>
public void sendFile(string filepath)
{
try
{
if (!File.Exists(filepath))
{
throw new FileNotFoundException();
}
sendrecv.sendStartPattern(_Writer);
sendrecv.writeOnStream(_Writer, new byte[] { headers.packettypebytes[headers.packettype.File] });
FileInfo fi = new FileInfo(filepath);
byte[] len = BitConverter.GetBytes((Int32)fi.Length);
sendrecv.writeOnStream(_Writer, len);
sendrecv.writeOnStream(_Writer, File.ReadAllBytes(filepath));
}
catch (Exception ex)
{
if (ex is ConnectionNotWorkingException)
{
stopAsyncRead();
ConnectionProblems.Invoke("Partner has ConnectionProblems");
}
}
}
//receiving data:
#region receiving data
/// <summary>
/// invokes the connectionproblems event to inform that the session partner has connection problems
/// </summary>
private void PartnerhasConnectionProblems()
{
ConnectionProblems.Invoke("Lost Connection to Partner");
}
