Added missing #disconnectEndpoint method to AsyncConnectExec

httpclient5/src/main/java/org/apache/hc/client5/http/async/AsyncExecRuntime.java

@@ -106,6 +106,11 @@ public interface AsyncExecRuntime {
             HttpClientContext context,
             FutureCallback<AsyncExecRuntime> callback);
 
+    /**
+     * Disconnects the local endpoint from the initial hop in the connection route.
+     */
+    void disconnectEndpoint();
+
     /**
      * Upgrades transport security of the active connection by using the TLS security protocol.
      *

httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/InternalH2AsyncExecRuntime.java

@@ -215,6 +215,14 @@ class InternalH2AsyncExecRuntime implements AsyncExecRuntime {
 
     }
 
+    @Override
+    public void disconnectEndpoint() {
+        final Endpoint endpoint = sessionRef.get();
+        if (endpoint != null) {
+            endpoint.session.close(CloseMode.GRACEFUL);
+        }
+    }
+
     @Override
     public void upgradeTls(final HttpClientContext context) {
         throw new UnsupportedOperationException();

httpclient5/src/main/java/org/apache/hc/client5/http/impl/async/InternalHttpAsyncExecRuntime.java

@@ -235,6 +235,14 @@ class InternalHttpAsyncExecRuntime implements AsyncExecRuntime {
 
     }
 
+    @Override
+    public void disconnectEndpoint() {
+        final AsyncConnectionEndpoint endpoint = endpointRef.get();
+        if (endpoint != null) {
+            endpoint.close(CloseMode.GRACEFUL);
+        }
+    }
+
     @Override
     public void upgradeTls(final HttpClientContext context) {
         upgradeTls(context, null);