http: make maximum header size configurable per-stream or per-server

Make `maxHeaderSize` a.k.a. `--max-header-size` configurable now that
the legacy parser is gone (which only supported a single global value).

Refs: https://github.com/nodejs/node/pull/30567

PR-URL: https://github.com/nodejs/node/pull/30570
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: David Carlier <devnexen@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>

1 files changed, 82 insertions, 0 deletions

diff --git a/test/parallel/test-http-max-header-size-per-stream.js b/test/parallel/test-http-max-header-size-per-stream.js
new file mode 100644
index 0000000000..5edb8d3a95
--- /dev/null
+++ b/test/parallel/test-http-max-header-size-per-stream.js
@@ -0,0 +1,82 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const http = require('http');
+const MakeDuplexPair = require('../common/duplexpair');
+
+// Test that setting the `maxHeaderSize` option works on a per-stream-basis.
+
+// Test 1: The server sends larger headers than what would otherwise be allowed.
+{
+  const { clientSide, serverSide } = MakeDuplexPair();
+
+  const req = http.request({
+    createConnection: common.mustCall(() => clientSide),
+    maxHeaderSize: http.maxHeaderSize * 4
+  }, common.mustCall((res) => {
+    assert.strictEqual(res.headers.hello, 'A'.repeat(http.maxHeaderSize * 3));
+    res.resume();  // We don’t actually care about contents.
+    res.on('end', common.mustCall());
+  }));
+  req.end();
+
+  serverSide.resume();  // Dump the request
+  serverSide.end('HTTP/1.1 200 OK\r\n' +
+                 'Hello: ' + 'A'.repeat(http.maxHeaderSize * 3) + '\r\n' +
+                 'Content-Length: 0\r\n' +
+                 '\r\n\r\n');
+}
+
+// Test 2: The same as Test 1 except without the option, to make sure it fails.
+{
+  const { clientSide, serverSide } = MakeDuplexPair();
+
+  const req = http.request({
+    createConnection: common.mustCall(() => clientSide)
+  }, common.mustNotCall());
+  req.end();
+  req.on('error', common.mustCall());
+
+  serverSide.resume();  // Dump the request
+  serverSide.end('HTTP/1.1 200 OK\r\n' +
+                 'Hello: ' + 'A'.repeat(http.maxHeaderSize * 3) + '\r\n' +
+                 'Content-Length: 0\r\n' +
+                 '\r\n\r\n');
+}
+
+// Test 3: The client sends larger headers than what would otherwise be allowed.
+{
+  const testData = 'Hello, World!\n';
+  const server = http.createServer(
+    { maxHeaderSize: http.maxHeaderSize * 4 },
+    common.mustCall((req, res) => {
+      res.statusCode = 200;
+      res.setHeader('Content-Type', 'text/plain');
+      res.end(testData);
+    }));
+
+  server.on('clientError', common.mustNotCall());
+
+  const { clientSide, serverSide } = MakeDuplexPair();
+  serverSide.server = server;
+  server.emit('connection', serverSide);
+
+  clientSide.write('GET / HTTP/1.1\r\n' +
+                   'Hello: ' + 'A'.repeat(http.maxHeaderSize * 3) + '\r\n' +
+                   '\r\n\r\n');
+}
+
+// Test 4: The same as Test 3 except without the option, to make sure it fails.
+{
+  const server = http.createServer(common.mustNotCall());
+
+  server.on('clientError', common.mustCall());
+
+  const { clientSide, serverSide } = MakeDuplexPair();
+  serverSide.server = server;
+  server.emit('connection', serverSide);
+
+  clientSide.write('GET / HTTP/1.1\r\n' +
+                   'Hello: ' + 'A'.repeat(http.maxHeaderSize * 3) + '\r\n' +
+                   '\r\n\r\n');
+}