sijie commented on a change in pull request #1678: Issue ##1333: TLS handshake 
failure on certificate expiry
URL: https://github.com/apache/bookkeeper/pull/1678#discussion_r220288238
 
 

 ##########
 File path: 
bookkeeper-server/src/main/java/org/apache/bookkeeper/proto/PerChannelBookieClient.java
 ##########
 @@ -1341,9 +1348,21 @@ public void operationComplete(Future<Channel> future) 
throws Exception {
                             }
                         } else if (future.isSuccess() && state == 
ConnectionState.START_TLS) {
                             rc = BKException.Code.OK;
-                            LOG.info("Successfully connected to bookie using 
TLS: " + addr);
+                            LOG.info("Successfully connected to bookie using 
TLS: {}", addr);
 
                             state = ConnectionState.CONNECTED;
+
+                            // print peer credentials
+                            SslHandler sslHandler = (SslHandler) 
channel.pipeline().get(SslHandler.class);
+                            LOG.info("Session {} is protected by {} ", 
future.get(),
+                                    
sslHandler.engine().getSession().getCipherSuite());
+
+                            Certificate[] certificates = 
sslHandler.engine().getSession().getPeerCertificates();
+                            if (LOG.isDebugEnabled()) {
+                                LOG.debug("Peer Certificate Chain for {}: {} 
", future.get(),
 
 Review comment:
   @eolivelli that's fine since this is executed in `future.isSuccess()` branch.

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