diff --git a/smack-bosh/src/main/java/org/jivesoftware/smack/bosh/BOSHConfiguration.java b/smack-bosh/src/main/java/org/jivesoftware/smack/bosh/BOSHConfiguration.java
index 680e37975..a4c2db65e 100644
--- a/smack-bosh/src/main/java/org/jivesoftware/smack/bosh/BOSHConfiguration.java
+++ b/smack-bosh/src/main/java/org/jivesoftware/smack/bosh/BOSHConfiguration.java
@@ -77,7 +77,7 @@ public final class BOSHConfiguration extends ConnectionConfiguration {
     }
 
     public URI getURI() throws URISyntaxException {
-        String uri = https ? "https://" : "http://" + getHostString() + ":" + this.port + file;
+        String uri = (https ? "https://" : "http://") + getHostString() + ":" + this.port + file;
         return new URI(uri);
     }
 
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java b/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
index 0b3e35eb5..244c741da 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/AbstractXMPPConnection.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2009 Jive Software, 2018-2021 Florian Schmaus.
+ * Copyright 2009 Jive Software, 2018-2022 Florian Schmaus.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -2006,11 +2006,18 @@ public abstract class AbstractXMPPConnection implements XMPPConnection {
         }, timeout, TimeUnit.MILLISECONDS);
 
         addAsyncStanzaListener(stanzaListener, replyFilter);
-        try {
-            sendStanza(stanza);
-        }
-        catch (NotConnectedException | InterruptedException exception) {
-            future.setException(exception);
+        Runnable sendOperation = () -> {
+            try {
+                sendStanza(stanza);
+            }
+            catch (NotConnectedException | InterruptedException exception) {
+                future.setException(exception);
+            }
+        };
+        if (SmackConfiguration.TRUELY_ASYNC_SENDS) {
+            Async.go(sendOperation);
+        } else {
+            sendOperation.run();
         }
 
         return future;
diff --git a/smack-core/src/main/java/org/jivesoftware/smack/SmackConfiguration.java b/smack-core/src/main/java/org/jivesoftware/smack/SmackConfiguration.java
index b93ec12cc..907a288b6 100644
--- a/smack-core/src/main/java/org/jivesoftware/smack/SmackConfiguration.java
+++ b/smack-core/src/main/java/org/jivesoftware/smack/SmackConfiguration.java
@@ -1,6 +1,6 @@
 /**
  *
- * Copyright 2003-2007 Jive Software, 2018-2021 Florian Schmaus.
+ * Copyright 2003-2007 Jive Software, 2018-2022 Florian Schmaus.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -386,4 +386,14 @@ public final class SmackConfiguration {
             }
         }
     }
+
+    /**
+     * If enabled, causes {@link AbstractXMPPConnection} to create a thread for every asynchronous send operation. This
+     * is meant to work-around a shortcoming of Smack 4.4, where certain send operations are not asynchronous even if
+     * they should be. This is an expert setting, do not toggle if you do not understand the consequences or have been
+     * told to do so. Note that it is expected that this will not be needed in future Smack versions.
+     *
+     * @since 4.4.6
+     */
+    public static boolean TRUELY_ASYNC_SENDS = false;
 }