Add test to ensure the server can handle keep-alive

test/mjsunit/test-keep-alive.js

@@ -0,0 +1,61 @@
+// This test requires the program "ab"
+process.mixin(require("./common"));
+http = require("http");
+sys = require("sys");
+PORT = 8891;
+
+body = "hello world\n";
+server = http.createServer(function (req, res) {
+  res.sendHeader(200, { 
+    "Content-Length": body.length, 
+    "Content-Type": "text/plain", 
+  });
+  res.sendBody(body);
+  res.finish();
+});
+server.listen(PORT);
+
+var keepAliveReqSec = 0;
+var normalReqSec = 0;
+
+function error (msg) {
+  throw new Error("ERROR. 'ab' not installed? " + msg);
+}
+
+function runAb(opts, callback) {
+  sys.exec("ab " + opts + " http://localhost:" + PORT + "/")
+    .addErrback(error)
+    .addCallback(function (out) {
+      var matches = /Requests per second:\s*(\d+)\./mi.exec(out);
+      var reqSec = parseInt(matches[1]);
+
+      matches = /Keep-Alive requests:\s*(\d+)/mi.exec(out);
+      var keepAliveRequests;
+      if (matches) {
+        keepAliveRequests = parseInt(matches[1]);
+      } else {
+        keepAliveRequests = 0;
+      }
+
+      callback(reqSec, keepAliveRequests);
+    });
+}
+
+runAb("-k -c 100 -t 2", function (reqSec, keepAliveRequests) {
+  keepAliveReqSec = reqSec;
+  assertTrue(keepAliveRequests > 0);
+  puts("keep-alive: " + keepAliveReqSec + " req/sec");
+
+  runAb("-c 100 -t 2", function (reqSec, keepAliveRequests) {
+    normalReqSec = reqSec;
+    assertEquals(0, keepAliveRequests);
+    puts("normal: " + normalReqSec + " req/sec");
+    server.close();
+  });
+});
+
+process.addListener("exit", function () {
+  assertTrue(normalReqSec > 50);
+  assertTrue(keepAliveReqSec > 50);
+  assertTrue(normalReqSec < keepAliveReqSec);
+});