Add the possibility to disable JSON output

Sylvain DUARTE · Sylvain DUARTE · commit 342c58f9a85e · 2021-10-18T08:35:03.000+02:00
diff --git a/README.md b/README.md
@@ -115,6 +115,14 @@ Will contain a `json` property in the response/output.
         }
     }
 
+## Send an empty response
+
+You can disable the JSON output in the response by setting the environment variable `ECHO_BACK_TO_CLIENT`. For example,
+
+```bash
+docker run -e ECHO_BACK_TO_CLIENT=false -p 8080:8080 -p 8443:8443 --rm -t mendhak/http-https-echo:20
+```
+
 ## Custom status code
 
 Use `x-set-response-status-code` to set a custom status code. For example,
diff --git a/index.js b/index.js
@@ -66,7 +66,11 @@ app.all('*', (req, res) => {
   const sleepTime = parseInt(req.headers["x-set-response-delay-ms"], 0)
   sleep(sleepTime).then(() => {
     
-    res.json(echo);
+    if (process.env.ECHO_BACK_TO_CLIENT == "" || process.env.ECHO_BACK_TO_CLIENT == "true"){
+      res.json(echo);
+    } else {
+      res.end();
+    }
 
     if (process.env.LOG_IGNORE_PATH != req.path) {
       console.log('-----------------')

Original file line number	Diff line number	Diff line change
@@ -115,6 +115,14 @@ Will contain a `json` property in the response/output.
`115`	`115`	`}`
`116`	`116`	`}`
`117`	`117`
	`118`	`+## Send an empty response`
	`119`	`+`
	`120`	+You can disable the JSON output in the response by setting the environment variable `ECHO_BACK_TO_CLIENT`. For example,
	`121`	`+`
	`122`	+```bash
	`123`	`+docker run -e ECHO_BACK_TO_CLIENT=false -p 8080:8080 -p 8443:8443 --rm -t mendhak/http-https-echo:20`
	`124`	+```
	`125`	`+`
`118`	`126`	`## Custom status code`
`119`	`127`
`120`	`128`	Use `x-set-response-status-code` to set a custom status code. For example,