Live renewal of the TLS options

README.md

@@ -161,6 +161,25 @@ A [bunyan logger](https://github.com/trentm/node-bunyan) instance. Created by de
 Sets the timeout (in ms) after that an idle connection is closed by the server  
 __Default:__ `0`
 
+## Renew TLS options
+[`renewTlsOptions(tlsOptions)`](src/index.js#L172) is used to read and use a new set of TLS certificates without restarting the server.
+Receives the same options as the [tls parameter](#tls) parameter in the constructor.
+```js
+let originalOptions = {};
+originalOptions.tls = {
+   key: fs.readFileSync("\path\to\old\key.pem"),
+   cert: fs.readFileSync("\path\to\old\cert.pem")
+}
+let ftpServer = new FtpServer(originalOptions);
+
+// Afterwards when the certificate is going to expire, it will need to be renewed
+let newTlsOptions = {
+   key: fs.readFileSync("\path\to\new\key.pem"),
+   cert: fs.readFileSync("\path\to\new\cert.pem")
+}
+ftpServer.renewTlsOptions(newTlsOptions);
+```
+
 ## CLI
 
 `ftp-srv` also comes with a builtin CLI.

src/index.js

@@ -169,5 +169,9 @@ class FtpServer extends EventEmitter {
     });
   }
 
+  renewTlsOptions(tlsOptions) {
+    this.server.setSecureContext(tlsOptions);
+    this.log.debug('Updating TLS options');
+  }
 }
 module.exports = FtpServer;