http: flush stored header

`flushHeaders` should work for header written
with `writeHead`.

PR-URL: https://github.com/nodejs/io.js/pull/1695
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

1 files changed, 27 insertions, 0 deletions

diff --git a/test/parallel/test-http-flush-response-headers.js b/test/parallel/test-http-flush-response-headers.js
new file mode 100644
index 0000000000..76e739741c
--- /dev/null
+++ b/test/parallel/test-http-flush-response-headers.js
@@ -0,0 +1,27 @@
+'use strict';
+const common = require('../common');
+const assert = require('assert');
+const http = require('http');
+
+const server = http.createServer();
+
+server.on('request', function(req, res) {
+  res.writeHead(200, {'foo': 'bar'});
+  res.flushHeaders();
+  res.flushHeaders(); // Should be idempotent.
+});
+server.listen(common.PORT, common.localhostIPv4, function() {
+  var req = http.request({
+    method: 'GET',
+    host: common.localhostIPv4,
+    port: common.PORT,
+  }, onResponse);
+
+  req.end();
+
+  function onResponse(res) {
+    assert.equal(res.headers['foo'], 'bar');
+    res.destroy();
+    server.close();
+  }
+});