private void DataReceivedHandler(IntPtr ssl)
{
RemoteClient RmClient = null;
wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl);
string IpPortStr = $"DTLS:{con.ep.Address.ToString()}:{con.ep.Port.ToString()}";
var RemoteEndPoint = new IPEndPoint(con.ep.Address, con.ep.Port);
CilentConnectPrompt(IpPortStr, RemoteEndPoint, ssl);
byte[] buff = new byte[2048];
while (true)
{
try
{
Console.WriteLine("Begin read message");
var recvd = wolfssl.read(ssl, buff, 2048);
if (recvd <= 0)
{
throw new Exception("Error reading message");
}
Console.WriteLine($"Read {recvd} bytes data");
ClientList.TryGetValue(IpPortStr, out RmClient);
RmClient.ActiveTime = DateTime.Now;
byte[] data = new byte[recvd];
Array.Copy(buff, data, recvd);
if (iDataReceivedFDback != null)
{
Task unwait = Task.Run(() => iDataReceivedFDback(IpPortStr, data));
}
}
catch (Exception)
{
Disconnect(IpPortStr);
return;
}
}
}
public static void Main(string[] args)
{
IntPtr ctx;
IntPtr ssl;
/* These paths should be changed for use */
string fileCert = @"server-cert.pem";
string fileKey = @"server-key.pem";
StringBuilder dhparam = new StringBuilder("dh2048.pem");
StringBuilder buff = new StringBuilder(1024);
StringBuilder reply = new StringBuilder("Hello, this is the wolfSSL C# wrapper");
//example of function used for setting logging
wolfssl.SetLogging(standard_log);
wolfssl.Init();
Console.WriteLine("Calling ctx Init from wolfSSL");
ctx = wolfssl.CTX_dtls_new(wolfssl.useDTLSv1_2_server());
if (ctx == IntPtr.Zero)
{
Console.WriteLine("Error creating ctx structure");
wolfssl.CTX_free(ctx);
return;
}
Console.WriteLine("Finished init of ctx .... now load in cert and key");
if (!File.Exists(fileCert) || !File.Exists(fileKey))
{
Console.WriteLine("Could not find cert or key file");
wolfssl.CTX_free(ctx);
return;
}
if (wolfssl.CTX_use_certificate_file(ctx, fileCert, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS)
{
Console.WriteLine("Error setting cert file");
wolfssl.CTX_free(ctx);
return;
}
if (wolfssl.CTX_use_PrivateKey_file(ctx, fileKey, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS)
{
Console.WriteLine("Error setting key file");
wolfssl.CTX_free(ctx);
return;
}
short minDhKey = 128;
wolfssl.CTX_SetMinDhKey_Sz(ctx, minDhKey);
IPAddress ip = IPAddress.Parse("0.0.0.0");
UdpClient udp = new UdpClient(11111);
IPEndPoint ep = new IPEndPoint(ip, 11111);
Console.WriteLine("Started UDP and waiting for a connection");
ssl = wolfssl.new_ssl(ctx);
if (ssl == IntPtr.Zero)
{
Console.WriteLine("Error creating ssl object");
wolfssl.CTX_free(ctx);
return;
}
if (wolfssl.SetTmpDH_file(ssl, dhparam, wolfssl.SSL_FILETYPE_PEM) != wolfssl.SUCCESS)
{
Console.WriteLine("Error in setting dhparam");
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
if (wolfssl.set_dtls_fd(ssl, udp, ep) != wolfssl.SUCCESS)
{
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
if (wolfssl.accept(ssl) != wolfssl.SUCCESS)
{
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
/* print out results of TLS/SSL accept */
Console.WriteLine("SSL version is " + wolfssl.get_version(ssl));
Console.WriteLine("SSL cipher suite is " + wolfssl.get_current_cipher(ssl));
/* get connection information and print ip - port */
wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl);
Console.Write("Connected to ip ");
Console.Write(con.ep.Address.ToString());
Console.Write(" on port ");
Console.WriteLine(con.ep.Port.ToString());
/* read information sent and send a reply */
if (wolfssl.read(ssl, buff, 1023) < 0)
{
Console.WriteLine("Error reading message");
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
Console.WriteLine(buff);
if (wolfssl.write(ssl, reply, reply.Length) != reply.Length)
{
Console.WriteLine("Error writing message");
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
Console.WriteLine("At the end freeing stuff");
wolfssl.shutdown(ssl);
udp.Close();
clean(ssl, ctx);
}
public static void Main(string[] args)
{
IntPtr ctx;
IntPtr ssl;
wolfssl.loggingCb loggingCb = Log;
wolfssl.SetLogging(loggingCb);
wolfssl.psk_delegate psk_cb = new wolfssl.psk_delegate(my_psk_server_cb);
byte[] buff = new byte[1024];
byte[] stubReply = new byte[] { 0xe1, 0x6f, 0x80, 0xff, 0xbe, 0xdc, 0x00, 0x00, 0x00, 0x01, 0x00, 0x02 };
wolfssl.Init();
Console.WriteLine("Calling ctx Init from wolfSSL");
ctx = wolfssl.CTX_dtls_new(wolfssl.useDTLSv1_2_server());
if (ctx == IntPtr.Zero)
{
Console.WriteLine("Error creating ctx structure");
return;
}
Console.WriteLine("Finished init of ctx .... now load in cert and key");
/* Test psk use with DHE */
StringBuilder hint = new StringBuilder("PROJECT_76"); //Hardcoded hint in Fo76
if (wolfssl.CTX_use_psk_identity_hint(ctx, hint) != wolfssl.SUCCESS)
{
Console.WriteLine("Error setting hint");
wolfssl.CTX_free(ctx);
return;
}
wolfssl.CTX_set_psk_server_callback(ctx, psk_cb);
Console.Write("Setting cipher suite to ");
StringBuilder set_cipher = new StringBuilder("TLS_PSK_WITH_AES_128_GCM_SHA256");
Console.WriteLine(set_cipher);
if (wolfssl.CTX_set_cipher_list(ctx, set_cipher) != wolfssl.SUCCESS)
{
Console.WriteLine("Failed to set cipher suite");
wolfssl.CTX_free(ctx);
return;
}
IPAddress ip = IPAddress.Parse("127.0.0.1");
UdpClient udp = new UdpClient(3001);
IPEndPoint ep = new IPEndPoint(ip, 3001);
Console.WriteLine("Started UDP and waiting for a connection");
ssl = wolfssl.new_ssl(ctx);
if (ssl == IntPtr.Zero)
{
Console.WriteLine("Error creating ssl object");
udp.Close();
wolfssl.CTX_free(ctx);
return;
}
if (wolfssl.set_dtls_fd(ssl, udp, ep) != wolfssl.SUCCESS)
{
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
if (wolfssl.accept(ssl) != wolfssl.SUCCESS)
{
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
/* print out results of TLS/SSL accept */
Console.WriteLine("SSL version is " + wolfssl.get_version(ssl));
Console.WriteLine("SSL cipher suite is " + wolfssl.get_current_cipher(ssl));
/* get connection information and print ip - port */
wolfssl.DTLS_con con = wolfssl.get_dtls_fd(ssl);
Console.Write("Connected to ip ");
Console.Write(con.ep.Address.ToString());
Console.Write(" on port ");
Console.WriteLine(con.ep.Port.ToString());
/* read information sent and send a reply */
if (wolfssl.read(ssl, buff, 1023) < 0)
{
Console.WriteLine("Error reading message");
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
Console.WriteLine(ByteArrayToString(buff));
if (wolfssl.write(ssl, stubReply, stubReply.Length) != stubReply.Length)
{
Console.WriteLine("Error writing message");
Console.WriteLine(wolfssl.get_error(ssl));
udp.Close();
clean(ssl, ctx);
return;
}
Console.WriteLine("At the end freeing stuff");
wolfssl.shutdown(ssl);
udp.Close();
clean(ssl, ctx);
}
