1 files changed, 66 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_bug561276.js b/netwerk/test/unit/test_bug561276.js
new file mode 100644
index 0000000000..9176b7c702
--- /dev/null
+++ b/netwerk/test/unit/test_bug561276.js
@@ -0,0 +1,66 @@
+//
+// Verify that we hit the net if we discover a cycle of redirects
+// coming from cache.
+//
+
+"use strict";
+
+const { HttpServer } = ChromeUtils.importESModule(
+  "resource://testing-common/httpd.sys.mjs"
+);
+
+var httpserver = new HttpServer();
+var iteration = 0;
+
+function setupChannel(suffix) {
+  var chan = NetUtil.newChannel({
+    uri: "http://localhost:" + httpserver.identity.primaryPort + suffix,
+    loadUsingSystemPrincipal: true,
+  });
+  var httpChan = chan.QueryInterface(Ci.nsIHttpChannel);
+  httpChan.requestMethod = "GET";
+  return httpChan;
+}
+
+function checkValueAndTrigger(request, data, ctx) {
+  Assert.equal("Ok", data);
+  httpserver.stop(do_test_finished);
+}
+
+function run_test() {
+  httpserver.registerPathHandler("/redirect1", redirectHandler1);
+  httpserver.registerPathHandler("/redirect2", redirectHandler2);
+  httpserver.start(-1);
+
+  // clear cache
+  evict_cache_entries();
+
+  // load first time
+  var channel = setupChannel("/redirect1");
+  channel.asyncOpen(new ChannelListener(checkValueAndTrigger, null));
+
+  do_test_pending();
+}
+
+function redirectHandler1(metadata, response) {
+  // first time we return a cacheable 302 pointing to next redirect
+  if (iteration < 1) {
+    response.setStatusLine(metadata.httpVersion, 302, "Found");
+    response.setHeader("Cache-Control", "max-age=600", false);
+    response.setHeader("Location", "/redirect2", false);
+
+    // next time called we return 200
+  } else {
+    response.setStatusLine(metadata.httpVersion, 200, "Ok");
+    response.setHeader("Cache-Control", "max-age=600", false);
+    response.setHeader("Content-Type", "text/plain");
+    response.bodyOutputStream.write("Ok", "Ok".length);
+  }
+  iteration += 1;
+}
+
+function redirectHandler2(metadata, response) {
+  response.setStatusLine(metadata.httpVersion, 302, "Found");
+  response.setHeader("Cache-Control", "max-age=600", false);
+  response.setHeader("Location", "/redirect1", false);
+}