public void exchange_handshake_cookie()
{
var initiator_sender_index = 1u;
var responder_sender_index = 2u;
Span <byte> buffer1 = new byte[4098];
Span <byte> buffer2 = new byte[4098];
var psk = new byte[32];
RandomNumberGenerator.Fill(psk);
var cookieValue = new byte[32];
RandomNumberGenerator.Fill(cookieValue);
var cookie = new PNetMeshCookie(cookieValue, DateTime.UtcNow.AddMinutes(2));
using var initiator_static = KeyPair.Generate();
using var responder_static = KeyPair.Generate();
var initiator_protocol = new PNetMeshProtocol(initiator_static.PrivateKey, initiator_static.PublicKey, psk);
var responder_protocol = new PNetMeshProtocol(responder_static.PrivateKey, responder_static.PublicKey, psk);
initiator_protocol.Cookie = cookie;
responder_protocol.Cookie = cookie;
using var initiator = initiator_protocol.CreateInitiator(initiator_sender_index, responder_static.PublicKey);
using var responder = responder_protocol.CreateResponder(responder_sender_index);
initiator.WriteInitiationMessage(buffer1, out var bytesWritten);
Assert.Equal(PNetMeshHandshake.InitiationMessageSize, bytesWritten);
bool r;
r = responder.TryReadInitiationMessage(buffer1.Slice(0, bytesWritten));
Assert.True(r);
Assert.True(responder.Timestamp > 0);
r = responder.TryWriteResponseMessage(buffer2, out bytesWritten, out var responder_transport);
Assert.True(r);
Assert.Equal(PNetMeshHandshake.ResponseMessageSize, bytesWritten);
Assert.NotNull(responder_transport);
r = initiator.TryReadResponseMessage(buffer2.Slice(0, bytesWritten), out var initiator_transport);
Assert.True(r);
Assert.NotNull(initiator_transport);
ulong counter;
//initiator needs to send first payload message
initiator_transport.WriteMessage(Encoding.UTF8.GetBytes("Hallo"), buffer1, out bytesWritten, out counter);
r = responder_transport.TryReadMessage(buffer1.Slice(0, bytesWritten), buffer2, out bytesWritten, out counter);
Assert.True(r);
Assert.Equal(5, bytesWritten);
Assert.Equal("Hallo", Encoding.UTF8.GetString(buffer2.Slice(0, bytesWritten)));
//test response
responder_transport.WriteMessage(Encoding.UTF8.GetBytes("World"), buffer1, out bytesWritten, out counter);
r = initiator_transport.TryReadMessage(buffer1.Slice(0, bytesWritten), buffer2, out bytesWritten, out counter);
Assert.True(r);
Assert.Equal(5, bytesWritten);
Assert.Equal("World", Encoding.UTF8.GetString(buffer2.Slice(0, bytesWritten)));
}
public void send_packets_outoforder()
{
var initiator_sender_index = 1u;
var responder_sender_index = 2u;
Span <byte> buffer1 = new byte[4098];
Span <byte> buffer2 = new byte[4098];
var psk = new byte[32];
RandomNumberGenerator.Fill(psk);
using var initiator_static = KeyPair.Generate();
using var responder_static = KeyPair.Generate();
var initiator_protocol = new PNetMeshProtocol(initiator_static.PrivateKey, initiator_static.PublicKey, psk);
var responder_protocol = new PNetMeshProtocol(responder_static.PrivateKey, responder_static.PublicKey, psk);
using var initiator = initiator_protocol.CreateInitiator(initiator_sender_index, responder_static.PublicKey);
using var responder = responder_protocol.CreateResponder(responder_sender_index);
initiator.WriteInitiationMessage(buffer1, out var bytesWritten);
Assert.Equal(PNetMeshHandshake.InitiationMessageSize, bytesWritten);
bool r;
r = responder.TryReadInitiationMessage(buffer1.Slice(0, bytesWritten));
Assert.True(r);
Assert.True(responder.Timestamp > 0);
r = responder.TryWriteResponseMessage(buffer2, out bytesWritten, out var responder_transport);
Assert.True(r);
Assert.Equal(PNetMeshHandshake.ResponseMessageSize, bytesWritten);
Assert.NotNull(responder_transport);
r = initiator.TryReadResponseMessage(buffer2.Slice(0, bytesWritten), out var initiator_transport);
Assert.True(r);
Assert.NotNull(initiator_transport);
ulong counter;
var messages = new List <byte[]>();
for (int i = 0; i < 5; i++)
{
//initiator needs to send first payload message
initiator_transport.WriteMessage(Encoding.UTF8.GetBytes($"Hallo {i}"), buffer1, out bytesWritten, out counter);
messages.Add(buffer1.Slice(0, bytesWritten).ToArray());
}
r = responder_transport.TryReadMessage(messages.First(), buffer2, out bytesWritten, out counter);
Assert.True(r);
Assert.Equal(7, bytesWritten);
Assert.Equal("Hallo 0", Encoding.UTF8.GetString(buffer2.Slice(0, bytesWritten)));
for (int i = messages.Count - 2; i > 0; i--)
{
r = responder_transport.TryReadMessage(messages[i], buffer2, out bytesWritten, out counter);
Assert.True(r);
Assert.Equal(7, bytesWritten);
Assert.Equal($"Hallo {i}", Encoding.UTF8.GetString(buffer2.Slice(0, bytesWritten)));
}
r = responder_transport.TryReadMessage(messages.Last(), buffer2, out bytesWritten, out counter);
Assert.True(r);
Assert.Equal(7, bytesWritten);
Assert.Equal($"Hallo 4", Encoding.UTF8.GetString(buffer2.Slice(0, bytesWritten)));
}