basic handling of gzip content-encoding on requests as per #31 - new test added to tests.sh

Author: matt-mercer

index.js

@@ -7,6 +7,7 @@ const express = require('express')
 const concat = require('concat-stream');
 const { promisify } = require('util');
 const promBundle = require("express-prom-bundle");
+const zlib = require("zlib");
 
 const {
   PROMETHEUS_ENABLED = false,
@@ -40,11 +41,16 @@ if(process.env.DISABLE_REQUEST_LOGS !== 'true'){
 
 app.use(function(req, res, next){
   req.pipe(concat(function(data){
-    req.body = data.toString('utf8');
+
+    if (req.get("Content-Encoding") === "gzip") {
+      req.body = zlib.gunzipSync(data).toString('utf8');
+    }
+    else {
+      req.body = data.toString('utf8');
+    }
     next();
   }));
 });
-
 //Handle all paths
 app.all('*', (req, res) => {
 

tests.sh

@@ -155,6 +155,18 @@ else
     exit 1
 fi
 
+
+message " Make JSON request with gzip Content-Encoding, and test that json is in the output. "
+REQUEST=$(echo -n '{"a":"b"}' | gzip | curl -s -X POST -H "Content-Encoding: gzip" -H "Content-Type: application/json" --data-binary @- http://localhost:8080/)
+if [ $(echo $REQUEST | jq -r '.json.a') == 'b' ]
+then
+    passed "JSON test passed."
+else
+    failed "JSON test failed."
+    echo $REQUEST | jq
+    exit 1
+fi
+
 REQUEST=$(curl -s -X POST -H "Content-Type: application/json" -d 'not-json' http://localhost:8080)
 if [ $(echo $REQUEST | jq -r '.json') == 'null' ]; then
     passed "JSON with Invalid Body test passed."