diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 0000000..8606125
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,21 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "chrome",
+            "request": "launch",
+            "name": "Launch Chrome",
+            "url": "http://localhost:8080",
+            "webRoot": "${workspaceFolder}"
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "program": "${file}"
+        }
+    ]
+}
diff --git a/chapter04/src/restful_regions.js b/chapter04/src/restful_regions.js
index a17f4d9..0ef8eb9 100644
--- a/chapter04/src/restful_regions.js
+++ b/chapter04/src/restful_regions.js
@@ -48,6 +48,8 @@ const getRegion = async (
             `;
         }
 
+        res.set("Connection", "close");
+
         const regions = await dbConn.query(sqlQuery);
         if (regions.length > 0 || region === null) {
             res
@@ -69,6 +71,8 @@ const deleteRegion = async (
     region: string
 ) => {
     try {
+        res.set("Connection", "close");
+
         const sqlCities = `
             SELECT 1 FROM cities 
             WHERE countryCode="${country}" 
@@ -103,6 +107,8 @@ const postRegion = async (
     country: string,
     name: string
 ) => {
+    res.set("Connection", "close");
+
     if (!name) {
         return res.status(400).send("Missing name");
     }
@@ -155,6 +161,8 @@ const putRegion = async (
     region: string,
     name: string
 ) => {
+    res.set("Connection", "close");
+
     if (!name) {
         return res.status(400).send("Missing name");
     }
diff --git a/chapter04/src/restful_server.js b/chapter04/src/restful_server.js
index 6186f95..df845a5 100644
--- a/chapter04/src/restful_server.js
+++ b/chapter04/src/restful_server.js
@@ -32,11 +32,8 @@ const {
 
 app.get("/regions/", (req, res) => getRegion(res, dbConn));
 
-app.get(
-    "/regions/:country/",
-    (req, res) => (
-        console.log(req), getRegion(res, dbConn, req.params.country)
-    )
+app.get("/regions/:country/", (req, res) =>
+    getRegion(res, dbConn, req.params.country)
 );
 
 app.get("/regions/:country/:region/", (req, res) =>