public async Task PerformClientHandshake(CancellationToken token)
{
if (this._isHandshaking)
{
throw new InvalidOperationException("Handshake already in progress");
}
if (this._isAuthenticated)
{
throw new InvalidOperationException("Renegotiation not supported");
}
// Create record protocol handler
this._recordHandler = new RecordHandler(this._securityParameters.MinimumVersion, isClient: true);
// Create handshake protocol sub handler
this._handshakeSession = new ClientHandshakeSession(this._securityParameters);
this._isHandshaking = true;
await this.SendClientHello(token);
await this.ReceiveServerHello(token);
await this.SendClientKeyExchange(token);
await this.ReceiveAlert(token);
await this.SendClientChangeCipherSpec(token);
await this.SendClientFinished(token);
await this.ReceiveChangeCipherSpecAndFinished(token);
this._isHandshaking = false;
this._isAuthenticated = true;
}
public async Task PerformServerHandshake(X509Certificate serverCertificate, CancellationToken token)
{
if (this._isHandshaking)
{
throw new InvalidOperationException("Handshake already in progress");
}
if (this._isAuthenticated)
{
throw new InvalidOperationException("Renegotiation not supported");
}
this._recordHandler = new RecordHandler(this._securityParameters.MinimumVersion, isClient: false);
this._handshakeSession = new ServerHandshakeSession(this._securityParameters, this.logger);
this._isHandshaking = true;
var timoutCts = new CancellationTokenSource(TimeSpan.FromSeconds(15));
var cts = CancellationTokenSource.CreateLinkedTokenSource(token, timoutCts.Token);
await this.ReceiveClientHello(cts.Token);
await this.SendServerHello(cts.Token);
await this.ReceiveClientKeyExchangeChangeCipherSpecAndFinished(cts.Token);
await this.SendServerChangeCipherSpec(cts.Token);
await this.SendServerFinished(cts.Token);
this._isHandshaking = false;
this._isAuthenticated = true;
}
