http: check for existance in resetHeadersTimeoutOnReqEnd

socket.parser can be undefined under unknown circumstances.
This is a fix for a bug I cannot reproduce but it is affecting
people.

Fixes: https://github.com/nodejs/node/issues/26366

PR-URL: https://github.com/nodejs/node/pull/26402
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/test/parallel/test-http-server-delete-parser.js b/test/parallel/test-http-server-delete-parser.js
new file mode 100644
index 0000000000..0c5eea9073
--- /dev/null
+++ b/test/parallel/test-http-server-delete-parser.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const common = require('../common');
+
+const http = require('http');
+
+const server = http.createServer(common.mustCall((req, res) => {
+  res.writeHead(200, { 'Content-Type': 'text/plain' });
+  res.write('okay', common.mustCall(() => {
+    delete res.socket.parser;
+  }));
+  res.end();
+}));
+
+server.listen(1337, '127.0.0.1');
+server.unref();
+
+const req = http.request({
+  port: 1337,
+  host: '127.0.0.1',
+  method: 'GET',
+});
+
+req.end();