ClientWebSocket CreateConnectedClient(ServiceEndPoint endPoint)
{
if (!endPoint.IsWebSocketEndpoint)
{
throw new Exception("Only wss:// endpoints are supported");
}
var connectionId = Guid.NewGuid().ToString();
var client = new ClientWebSocket();
client.Options.ClientCertificates = new X509Certificate2Collection(new X509Certificate2Collection(clientCertificate));
client.Options.AddSubProtocol("Octopus");
client.Options.SetRequestHeader(ServerCertificateInterceptor.Header, connectionId);
if (endPoint.Proxy != null)
{
client.Options.Proxy = new WebSocketProxy(endPoint.Proxy);
}
try
{
ServerCertificateInterceptor.Expect(connectionId);
using (var cts = new CancellationTokenSource(endPoint.TcpClientConnectTimeout))
client.ConnectAsync(endPoint.BaseUri, cts.Token)
.ConfigureAwait(false).GetAwaiter().GetResult();
ServerCertificateInterceptor.Validate(connectionId, endPoint);
}
finally
{
ServerCertificateInterceptor.Remove(connectionId);
}
return(client);
}
ClientWebSocket CreateConnectedClient(ServiceEndPoint serviceEndpoint, CancellationToken cancellationToken)
{
if (!serviceEndpoint.IsWebSocketEndpoint)
{
throw new Exception("Only wss:// endpoints are supported");
}
var connectionId = Guid.NewGuid().ToString();
var client = new ClientWebSocket();
client.Options.ClientCertificates = new X509Certificate2Collection(new X509Certificate2Collection(clientCertificate));
client.Options.AddSubProtocol("Octopus");
client.Options.SetRequestHeader(ServerCertificateInterceptor.Header, connectionId);
if (serviceEndpoint.Proxy != null)
{
client.Options.Proxy = new WebSocketProxy(serviceEndpoint.Proxy);
}
try
{
ServerCertificateInterceptor.Expect(connectionId);
using (var cts = new CancellationTokenSource(serviceEndpoint.TcpClientConnectTimeout))
{
using (cancellationToken.Register(() => cts?.Cancel()))
client.ConnectAsync(serviceEndpoint.BaseUri, cts.Token)
.ConfigureAwait(false).GetAwaiter().GetResult();
}
ServerCertificateInterceptor.Validate(connectionId, serviceEndpoint);
}
catch
{
if (client.State == WebSocketState.Open)
{
using (var sendCancel = new CancellationTokenSource(TimeSpan.FromSeconds(1)))
client.CloseAsync(WebSocketCloseStatus.ProtocolError, "Certificate thumbprint not recognised", sendCancel.Token)
.ConfigureAwait(false).GetAwaiter().GetResult();
}
client.Dispose();
throw;
}
finally
{
ServerCertificateInterceptor.Remove(connectionId);
}
return(client);
}
