We could be notified of the root exception, not always a wrapping one, see AsyncHttpClient#1070

Author: slandelle

client/src/main/java/org/asynchttpclient/netty/handler/AsyncHttpClientHandler.java

@@ -158,7 +158,7 @@ public void channelInactive(ChannelHandlerContext ctx) throws Exception {
 
     @Override
     public void exceptionCaught(ChannelHandlerContext ctx, Throwable e) throws Exception {
-        Throwable cause = getCause(e.getCause());
+        Throwable cause = getCause(e);
 
         if (cause instanceof PrematureChannelClosureException || cause instanceof ClosedChannelException)
             return;

client/src/main/java/org/asynchttpclient/util/MiscUtils.java

@@ -65,6 +65,7 @@ public static <T extends Exception> T trimStackTrace(T e) {
     }
 
     public static Throwable getCause(Throwable t) {
-        return t.getCause() != null ? t.getCause() : t;
+        Throwable cause = t.getCause();
+        return cause != null ? getCause(cause) : t;
     }
 }