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+<!doctype html>
+<html>
+ <head>
+ <meta charset="utf-8">
+ <title>Request Keepalive Quota Tests</title>
+ <meta name="timeout" content="long">
+ <meta name="help" href="https://fetch.spec.whatwg.org/#request">
+ <meta name="help" href="https://fetch.spec.whatwg.org/#body-mixin">
+ <meta name="author" title="Microsoft Edge" href="https://www.microsoft.com">
+ <meta name="variant" content="?include=fast">
+ <meta name="variant" content="?include=slow-1">
+ <meta name="variant" content="?include=slow-2">
+ <meta name="variant" content="?include=slow-3">
+ <script src="/resources/testharness.js"></script>
+ <script src="/resources/testharnessreport.js"></script>
+ <script src="/common/subset-tests-by-key.js"></script>
+ </head>
+ <body>
+ <script>
+ 'use strict';
+
+ // We want to ensure that our keepalive requests hang slightly before completing so we can validate
+ // the effects of a rolling quota. To do this we will utilize trickle.py with a 1s delay. This should
+ // prevent any of the Fetch's from finishing in this window.
+ const trickleURL = '../resources/trickle.py?count=1&ms=';
+ const noDelay = 0;
+ const standardDelay = 1000;
+ function wait(ms) {
+ return new Promise(resolve => step_timeout(resolve, ms));
+ }
+
+ // We should expect 64KiB of rolling quota for any type of keep-alive request sent.
+ const expectedQuota = 65536;
+
+ function fetchKeepAliveRequest(delay, bodySize) {
+ // Create a body of the specified size that's filled with *'s
+ const body = '*'.repeat(bodySize);
+ return fetch(trickleURL + delay, {keepalive: true, body, method: 'POST'}).then(res => {
+ return res.text();
+ }).then(() => {
+ return wait(1);
+ });
+ }
+
+ // Test 1 Byte
+ subsetTestByKey("fast", promise_test, function(test) {
+ return fetchKeepAliveRequest(noDelay, 1 /* bodySize */);
+ }, 'A Keep-Alive fetch() with a small body should succeed.');
+
+ // Test Quota full limit
+ subsetTestByKey("fast", promise_test, function(test) {
+ return fetchKeepAliveRequest(noDelay, expectedQuota /* bodySize */);
+ }, 'A Keep-Alive fetch() with a body at the Quota Limit should succeed.');
+
+ // Test Quota + 1 Byte
+ subsetTestByKey("fast", promise_test, function(test) {
+ return promise_rejects_js(test, TypeError, fetchKeepAliveRequest(noDelay, expectedQuota + 1));
+ }, 'A Keep-Alive fetch() with a body over the Quota Limit should reject.');
+
+ // Test the Quota becomes available upon promise completion.
+ subsetTestByKey("slow-1", promise_test, function (test) {
+ // Fill our Quota then try to send a second fetch.
+ return fetchKeepAliveRequest(standardDelay, expectedQuota).then(() => {
+ // Now validate that we can send another Keep-Alive fetch for the full size of the quota.
+ return fetchKeepAliveRequest(noDelay, expectedQuota);
+ });
+ }, 'A Keep-Alive fetch() should return its allocated Quota upon promise resolution.');
+
+ // Ensure only the correct amount of Quota becomes available when a fetch completes.
+ subsetTestByKey("slow-2", promise_test, function(test) {
+ // Create a fetch that uses all but 1 Byte of the Quota and runs for 2x as long as the other requests.
+ const first = fetchKeepAliveRequest(standardDelay * 2, expectedQuota - 1);
+
+ // Now create a single Byte request that will complete quicker.
+ const second = fetchKeepAliveRequest(standardDelay, 1 /* bodySize */).then(() => {
+ // We shouldn't be able to create a 2 Byte request right now as only 1 Byte should have freed up.
+ return promise_rejects_js(test, TypeError, fetchKeepAliveRequest(noDelay, 2 /* bodySize */));
+ }).then(() => {
+ // Now validate that we can send another Keep-Alive fetch for just 1 Byte.
+ return fetchKeepAliveRequest(noDelay, 1 /* bodySize */);
+ });
+
+ return Promise.all([first, second]);
+ }, 'A Keep-Alive fetch() should return only its allocated Quota upon promise resolution.');
+
+ // Test rejecting a fetch() after the quota is used up.
+ subsetTestByKey("slow-3", promise_test, function (test) {
+ // Fill our Quota then try to send a second fetch.
+ const p = fetchKeepAliveRequest(standardDelay, expectedQuota);
+
+ const q = promise_rejects_js(test, TypeError, fetchKeepAliveRequest(noDelay, 1 /* bodySize */));
+ return Promise.all([p, q]);
+ }, 'A Keep-Alive fetch() should not be allowed if the Quota is used up.');
+
+ </script>
+ </body>
+</html>