Timeout after 25s

modules/createServer.js

@@ -71,21 +71,21 @@ function createServer(publicDir, statsFile) {
   // Heroku dynos automatically timeout after 30s. Set our
   // own timeout here to force sockets to close before that.
   // https://devcenter.heroku.com/articles/request-timeout
-  // server.setTimeout(25000, socket => {
-  //   const message = `Timeout of 25 seconds exceeded`;
+  server.setTimeout(25000, socket => {
+    const message = `Timeout of 25 seconds exceeded`;
 
-  //   socket.end(
-  //     [
-  //       "HTTP/1.1 503 Service Unavailable",
-  //       "Date: " + new Date().toGMTString(),
-  //       "Content-Length: " + Buffer.byteLength(message),
-  //       "Content-Type: text/plain",
-  //       "Connection: close",
-  //       "",
-  //       message
-  //     ].join("\r\n")
-  //   );
-  // });
+    socket.end(
+      [
+        "HTTP/1.1 503 Service Unavailable",
+        "Date: " + new Date().toGMTString(),
+        "Content-Length: " + Buffer.byteLength(message),
+        "Content-Type: text/plain",
+        "Connection: close",
+        "",
+        message
+      ].join("\r\n")
+    );
+  });
 
   return server;
 }

server.js

@@ -34,8 +34,10 @@ throng({
   start: startServer,
   lifetime: Infinity,
 
-  // Heroku shuts down processes forcefully after 30 seconds,
-  // so make sure we exit before that happens.
+  // In production, increase throng's default grace period to allow
+  // servers that are still handling requests to finish. Heroku shuts
+  // down processes forcefully after 30 seconds, so exit before that
+  // happens to avoid an exit timeout.
   // https://devcenter.heroku.com/articles/dynos#shutdown
-  grace: 25000
+  grace: process.env.NODE_ENV === "production" ? 25000 : 5000
 });