http: improve performance for incoming headers

PR-URL: https://github.com/nodejs/node/pull/26041
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>

2 files changed, 39 insertions, 1 deletions

diff --git a/benchmark/_http-benchmarkers.js b/benchmark/_http-benchmarkers.js
index f456628454..a4d6230039 100644
--- a/benchmark/_http-benchmarkers.js
+++ b/benchmark/_http-benchmarkers.js
@@ -25,8 +25,11 @@ class AutocannonBenchmarker {
       '-c', options.connections,
       '-j',
       '-n',
-      `http://127.0.0.1:${options.port}${options.path}`,
     ];
+    for (const field in options.headers) {
+      args.push('-H', `${field}=${options.headers[field]}`);
+    }
+    args.push(`http://127.0.0.1:${options.port}${options.path}`);
     const child = child_process.spawn(this.executable, args);
     return child;
   }
diff --git a/benchmark/http/incoming_headers.js b/benchmark/http/incoming_headers.js
new file mode 100644
index 0000000000..a1ab57e238
--- /dev/null
+++ b/benchmark/http/incoming_headers.js
@@ -0,0 +1,35 @@
+'use strict';
+const common = require('../common.js');
+const http = require('http');
+
+const bench = common.createBenchmark(main, {
+  // unicode confuses ab on os x.
+  c: [50, 500],
+  headerDuplicates: [0, 5, 20]
+});
+
+function main({ c, headerDuplicates }) {
+  const server = http.createServer((req, res) => {
+    res.end();
+  });
+
+  server.listen(common.PORT, () => {
+    const headers = {
+      'Content-Type': 'text/plain',
+      'Accept': 'text/plain',
+      'User-Agent': 'nodejs-benchmark',
+      'Date': new Date().toString(),
+      'Cache-Control': 'no-cache'
+    };
+    for (let i = 0; i < headerDuplicates; i++) {
+      headers[`foo${i}`] = `some header value ${i}`;
+    }
+    bench.http({
+      path: '/',
+      connections: c,
+      headers
+    }, () => {
+      server.close();
+    });
+  });
+}