diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5a89cbb..232a473 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@ CHANGELOG
 ### NEXT RELEASE
 
 * TS: fix socket/transport types (#790).
+* Transport: Handle keep alive request from server (#791).
 
 
 ### 3.10.0
diff --git a/lib/Transport.js b/lib/Transport.js
index 33018e7..52c6f15 100644
--- a/lib/Transport.js
+++ b/lib/Transport.js
@@ -340,7 +340,25 @@ module.exports = class Transport
 
   _onData(data)
   {
-    // CRLF Keep Alive response from server. Ignore it.
+    // CRLF Keep Alive request from server, reply.
+    if (data === '\r\n\r\n')
+    {
+      logger.debug('received message with double-CRLF Keep Alive request');
+
+      try
+      {
+        // Reply with single CRLF.
+        this.socket.send('\r\n');
+      }
+      catch (error)
+      {
+        logger.warn(`error sending Keep Alive response: ${error}`);
+      }
+
+      return;
+    }
+
+    // CRLF Keep Alive response from server, ignore it.
     if (data === '\r\n')
     {
       logger.debug('received message with CRLF Keep Alive response');