fixup! feat(binding-coap): add support for client certificates

Author: JKRhb

lib/src/binding_coap/coap_client.dart

@@ -29,7 +29,7 @@ class _InternalCoapConfig extends CoapConfigDefault {
         rootCertificates = coapConfig.rootCertificates,
         clientCertificateFileName = coapConfig.clientCertificateFileName,
         clientKeyFileName = coapConfig.clientKeyFileName,
-        verifyPrivateKey = coapConfig.verifyPrivateKey;
+        _verifyPrivateKey = coapConfig.verifyPrivateKey;
 
   @override
   final int preferredBlockSize;
@@ -52,8 +52,10 @@ class _InternalCoapConfig extends CoapConfigDefault {
   @override
   final String? clientKeyFileName;
 
+  final bool _verifyPrivateKey;
+
   @override
-  final bool verifyPrivateKey;
+  bool get verifyPrivateKey => _verifyPrivateKey;
 }
 
 coap.PskCredentialsCallback? _createPskCallback(

lib/src/binding_coap/coap_config.dart

@@ -61,7 +61,13 @@ class CoapConfig {
   /// Defaults to 60 seconds.
   final Duration multicastDiscoveryTimeout;
 
+  /// Name of a file referring to a client certificate used with DTLS PKI mode.
   final String? clientCertificateFileName;
+
+  /// Name of a file referring to a private client key used with DTLS PKI mode.
   final String? clientKeyFileName;
+
+  /// Whether the private key of the client certificate should be verified when
+  /// creating the DTLS context.
   final bool verifyPrivateKey;
 }