public static extern void HP_Set_FN_Server_OnHandShake(IntPtr pListener, OnHandShake fn);
public void Start()
{
if (IsRunning)
{
OnStopped.Invoke(null);
return;
}
IsRunning = true;
//enter to an infinite cycle to be able to handle every change in stream
while (IsRunning)
{
while (IsRunning && !_stream.DataAvailable)
{
;
}
while (IsRunning && _client.Available < 3)
{
;
}
if (IsRunning)
{
Byte[] bytes = new Byte[_client.Available];
_stream.Read(bytes, 0, _client.Available);
string data = Encoding.UTF8.GetString(bytes);
if (Regex.IsMatch(data, "^GET"))// test if it is handshake
{
WriteHandShake(_stream, data);
OnHandShake?.Invoke(this);
}
else
{
bool fin = (bytes[0] & 0b10000000) != 0,
mask = (bytes[1] & 0b10000000) != 0; // must be true, "All messages from the client to the server have this bit set"
int opcode = bytes[0] & 0b00001111, // expecting 1 - text message
msglen = bytes[1] - 128, // & 0111 1111
offset = 2;
if (msglen == 126)
{
// was ToUInt16(bytes, offset) but the result is incorrect
msglen = BitConverter.ToUInt16(new byte[] { bytes[3], bytes[2] }, 0);
offset = 4;
}
else if (msglen == 127)
{
throw new NotImplementedException("Larger messages not implemented");
//Console.WriteLine("TODO: msglen == 127, needs qword to store msglen");
//// i don't really know the byte order, please edit this
//msglen = BitConverter.ToUInt64(new byte[] { bytes[5], bytes[4], bytes[3], bytes[2], bytes[9], bytes[8], bytes[7], bytes[6] }, 0);
//offset = 10;
}
if (msglen == 0)
{
OnData?.Invoke(this, new byte[0]);
OnStringData?.Invoke(this, null);
}
else if (mask)
{
byte[] decoded = new byte[msglen];
byte[] masks = new byte[4] {
bytes[offset], bytes[offset + 1], bytes[offset + 2], bytes[offset + 3]
};
offset += 4;
for (int i = 0; i < msglen; ++i)
{
decoded[i] = (byte)(bytes[offset + i] ^ masks[i % 4]);
}
OnData?.Invoke(this, decoded);
OnStringData?.Invoke(this, Encoding.UTF8.GetString(decoded));
}
else
{
throw new NotImplementedException("Mask bit not set");
}
}
}
}
_stream?.Close();
_client?.Close();
_stream = null;
_client = null;
OnStopped.Invoke(this);
}
public static extern void HP_Set_FN_Agent_OnHandShake(IntPtr pListener, OnHandShake fn);
public static extern void HP_Set_FN_HttpServer_OnHandShake(IntPtr pListener, OnHandShake fn);
