http: add regression test for chunked smuggling

PR-URL: nodejs-private/node-private#284
Reviewed-By: Akshay K <iit.akshay@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Robert Nagy <ronagy@icloud.com>

test/parallel/test-http-chunked-smuggling.js

@@ -0,0 +1,43 @@
+'use strict';
+
+const common = require('../common');
+const http = require('http');
+const net = require('net');
+const assert = require('assert');
+
+// Verify that a request with a space before the content length will result
+// in a 400 Bad Request.
+
+const server = http.createServer(common.mustCall((request, response) => {
+  assert.notStrictEqual(request.url, '/admin');
+  response.end('hello world');
+}), 1);
+
+server.listen(0, common.mustCall(start));
+
+function start() {
+  const sock = net.connect(server.address().port);
+
+  sock.write('' +
+    'GET / HTTP/1.1\r\n' +
+    'Host: localhost:8080\r\n' +
+    'Transfer-Encoding: chunked\r\n' +
+    '\r\n' +
+    '2 \n' +
+    'xx\r\n' +
+    '4c\r\n' +
+    '0\r\n' +
+    '\r\n' +
+    'GET /admin HTTP/1.1\r\n' +
+    'Host: localhost:8080\r\n' +
+    'Transfer-Encoding: chunked\r\n' +
+    '\r\n' +
+    '0\r\n' +
+    '\r\n'
+  );
+
+  sock.resume();
+  sock.on('end', common.mustCall(function() {
+    server.close();
+  }));
+}