Fixed tlsCAFile problem if passed more than once

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Recent change notes
 
+### 0.7.0
+
+- Fixed problem with tls CAFile parameter if passed more than once.
+
 ### 0.7.0-nullsafety.3
 
 - Documentation and examples

lib/mongo_dart.dart

@@ -7,7 +7,7 @@ library mongo_dart;
 import 'dart:async';
 import 'dart:collection';
 import 'dart:convert' show base64, utf8;
-import 'dart:io' show File, FileMode, IOSink, SecureSocket, SecurityContext, Socket;
+import 'dart:io' show File, FileMode, IOSink, SecureSocket, SecurityContext, Socket, TlsException;
 import 'dart:math';
 import 'dart:typed_data';
 import 'package:collection/collection.dart';

lib/src/network/connection.dart

@@ -5,6 +5,8 @@ const noSecureRequestError = 'The socket connection has been reset by peer.'
     '\n- Trying to connect to an ssl/tls encrypted database without specifiyng'
     '\n  either the query parm tls=true '
     'or the secure=true parameter in db.open()'
+    '\n- The server requires a key certificate from the client, '
+    'but no certificate has been sent'
     '\n- Others';
 
 class _ServerCapabilities {
@@ -65,6 +67,7 @@ class _ServerCapabilities {
 }
 
 class Connection {
+  static bool _caCertificateAlreadyInHash = false;
   final Logger _log = Logger('Connection');
   final _ConnectionManager _manager;
   ServerConfig serverConfig;
@@ -96,7 +99,8 @@ class Connection {
     try {
       if (serverConfig.isSecure) {
         var securityContext = SecurityContext.defaultContext;
-        if (serverConfig.tlsCAFileContent != null) {
+        if (serverConfig.tlsCAFileContent != null &&
+            !_caCertificateAlreadyInHash) {
           securityContext
               .setTrustedCertificatesBytes(serverConfig.tlsCAFileContent!);
         }
@@ -117,6 +121,18 @@ class Connection {
       } else {
         _socket = await Socket.connect(serverConfig.host, serverConfig.port);
       }
+    } on TlsException catch (e) {
+      if (e.osError?.message
+              .contains('CERT_ALREADY_IN_HASH_TABLE(x509_lu.c:356)') ??
+          false) {
+        _caCertificateAlreadyInHash = true;
+        return connect();
+      }
+      _closed = true;
+      connected = false;
+      var ex = ConnectionException(
+          'Could not connect to ${serverConfig.hostUrl}\n- $e');
+      throw ex;
     } catch (e) {
       _closed = true;
       connected = false;

pubspec.yaml

@@ -1,5 +1,5 @@
 name: mongo_dart
-version: 0.7.0-nullsafety.3
+version: 0.7.0
 description: MongoDB driver, implemented in pure Dart. All CRUD operations, aggregation pipeline and more!
 homepage: https://github.com/mongo-dart/mongo_dart
 

test/certificates_for_testing/client.mongo.crt

@@ -0,0 +1,33 @@
+-----BEGIN CERTIFICATE-----
+MIIFtzCCA5+gAwIBAgIUVB4ZgIwuUsRDcEnrZ3cvPMzYbbAwDQYJKoZIhvcNAQEL
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+-----END CERTIFICATE-----

test/certificates_for_testing/client.mongo.key

@@ -0,0 +1,51 @@
+-----BEGIN RSA PRIVATE KEY-----
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+-----END RSA PRIVATE KEY-----

test/certificates_for_testing/client.mongo.pem

@@ -0,0 +1,84 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN RSA PRIVATE KEY-----
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test/certificates_for_testing/mongo-test-ca-full-chain.crt

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test/certificates_for_testing/mongo-test-ca.crt

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