Add custom certificate validation handler

This commit is contained in:
Christian Kratky
2017-10-09 19:03:11 +02:00
parent 4517d80704
commit 59f07c868d
5 changed files with 57 additions and 21 deletions
@@ -46,6 +46,8 @@ namespace MQTTnet.Implementations
public Stream ReceiveStream { get; private set; }
public Stream RawReceiveStream { get; private set; }
public static Func<X509Certificate, X509Chain, SslPolicyErrors, MqttClientTcpOptions, bool> CustomCertificateValidationCallback { get; set; }
public async Task ConnectAsync()
{
if (_socket == null)
@@ -57,7 +59,7 @@ namespace MQTTnet.Implementations
if (_options.TlsOptions.UseTls)
{
_sslStream = new SslStream(new NetworkStream(_socket, true), false, UserCertificateValidationCallback);
_sslStream = new SslStream(new NetworkStream(_socket, true), false, InternalUserCertificateValidationCallback);
await _sslStream.AuthenticateAsClientAsync(_options.Server, LoadCertificates(_options), SslProtocols.Tls12, _options.TlsOptions.IgnoreCertificateRevocationErrors).ConfigureAwait(false);
}
@@ -98,8 +100,13 @@ namespace MQTTnet.Implementations
ReceiveStream = new BufferedStream(RawReceiveStream, BufferSize);
}
private bool UserCertificateValidationCallback(object sender, X509Certificate x509Certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
private bool InternalUserCertificateValidationCallback(object sender, X509Certificate x509Certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
{
if (CustomCertificateValidationCallback != null)
{
return CustomCertificateValidationCallback(x509Certificate, chain, sslPolicyErrors, _options);
}
if (sslPolicyErrors == SslPolicyErrors.None)
{
return true;