/// <summary>
/// Sends a string to the server
/// </summary>
/// <param name="message">The message</param>
/// <returns>Returns true if there was no error</returns>
public bool sendMessage(String message)
{
if (socket == null)
{
log.Error("Not connected!");
return(false);
}
byte[] msgFragAndLength = new byte[FRAG_SIZE + 4];
byte[] encodedMsgLengthByte = new byte[4];
int bytesSent = 0;
int numBytes = 0;
byte[] messageByte = Encoding.UTF8.GetBytes(message);
uint totalMessageLength = (uint)messageByte.Length;
string oute;
while (bytesSent < totalMessageLength)
{
if ((totalMessageLength - bytesSent) > FRAG_SIZE)
{
encodedMsgLengthByte = System.BitConverter.GetBytes((int)XEncoder.encodeNatural((uint)FRAG_SIZE, 1));
//Convert to bigendian
Array.Reverse(encodedMsgLengthByte);
System.Buffer.BlockCopy(encodedMsgLengthByte, 0, msgFragAndLength, 0, encodedMsgLengthByte.Length);
System.Buffer.BlockCopy(messageByte, bytesSent, msgFragAndLength, encodedMsgLengthByte.Length, FRAG_SIZE);
oute = System.Text.ASCIIEncoding.ASCII.GetString(msgFragAndLength);
numBytes = socket.Client.Send(msgFragAndLength, msgFragAndLength.Length, SocketFlags.None);
}
else
{
encodedMsgLengthByte = System.BitConverter.GetBytes((int)XEncoder.encodeNatural(totalMessageLength - (uint)bytesSent, 0));
//Convert to bigendian
Array.Reverse(encodedMsgLengthByte);
System.Buffer.BlockCopy(encodedMsgLengthByte, 0, msgFragAndLength, 0, encodedMsgLengthByte.Length);
System.Buffer.BlockCopy(messageByte, bytesSent, msgFragAndLength, encodedMsgLengthByte.Length, (int)totalMessageLength - (int)bytesSent);
oute = System.Text.ASCIIEncoding.ASCII.GetString(msgFragAndLength);
numBytes = socket.Client.Send(msgFragAndLength, (int)totalMessageLength - (int)bytesSent + 4, SocketFlags.None);
}
if (numBytes < 5)
{
log.Error("Failed to send!");
return(false);
}
else
{
bytesSent += numBytes - 4;
}
}
return(true);
}
/// <summary>
/// Waits to receive a string from the server
/// </summary>
/// <param name="responseMessage">Used to store the received message</param>
/// <returns>Returns true if no error occurred during receiving</returns>
public bool receiveMessage(out string responseMessage)
{
bool flag = false;
byte[] encodedLengthByte = new byte[4];
uint encodedLength;
uint length;
int fragCounter = 0;
int numBytes;
string message = "";
byte[] msgBuf = new byte[FRAG_SIZE + 4];
responseMessage = "";
do
{
//Read Length
numBytes = socket.Client.Receive(encodedLengthByte, 4, SocketFlags.None);
if (numBytes != 4)
{
log.Error("Could not receive 4 bytes for length.");
return(false);
}
//Convert to littleEndian
Array.Reverse(encodedLengthByte);
encodedLength = System.BitConverter.ToUInt32(encodedLengthByte, 0);
length = XEncoder.decodeNatural(encodedLength);
flag = XEncoder.decodeFlag(encodedLength);
if (length < 1 || length > FRAG_SIZE)
{
log.Error("Illegal msg length " + length);
return(false);
}
//Read Msg
numBytes = socket.Client.Receive(msgBuf, (int)length, SocketFlags.None);
message += System.Text.ASCIIEncoding.ASCII.GetString(msgBuf).Substring(0, numBytes);
if (fragCounter > MAX_FRAGS)
{
log.Error("Maximum fragments reached, aborting.");
return(false);
}
fragCounter++;
} while (flag);
responseMessage = message;
return(true);
}
