1'use strict';
2
3const common = require('../common');
4const assert = require('assert');
5const http = require('http');
6
7const server = http.createServer().listen(0, connectToServer);
8
9server.on('connection', common.mustCall((socket) => {
10  assert.throws(
11    () => {
12      socket.setEncoding('');
13    },
14    {
15      code: 'ERR_HTTP_SOCKET_ENCODING',
16      name: 'Error',
17      message: 'Changing the socket encoding is not ' +
18        'allowed per RFC7230 Section 3.'
19    }
20  );
21
22  socket.end();
23}));
24
25function connectToServer() {
26  const client = new http.Agent().createConnection(this.address().port, () => {
27    client.end();
28  }).on('end', () => server.close());
29}
30