Fix tests

tests/swoole_http2_client_coro/connect_twice.phpt

@@ -6,30 +6,33 @@ swoole_http2_client_coro: connect twice
 <?php
 require __DIR__ . '/../include/bootstrap.php';
 
+use Swoole\Coroutine\Channel;
 use Swoole\Http2\Request;
 use function Swoole\Coroutine\run;
 use function Swoole\Coroutine\go;
 
 run(function () {
-    $client = new \Swoole\Coroutine\Http2\Client('www.zhihu.com', 443, true);
-    $chan   = new \Swoole\Coroutine\Channel(1);
+    $client = new \Swoole\Coroutine\Http2\Client('httpbin.org', 443, true);
+    $chan = new Channel(1);
     go(function () use ($client, $chan) {
         $client->connect();
         $req = new Request();
+        $uuid = uniqid();
         $req->method = 'GET';
-        $req->path   = '/io?io=' . str_repeat('xxx', 1000);
+        $req->path = '/base64/' . base64_encode($uuid);
         $client->send($req);
         $chan->push(true);
         $resp = $client->recv();
         Assert::eq($resp->statusCode, 200);
-        Assert::contains($resp->data, '知乎');
+        Assert::eq($resp->data, $uuid);
         $chan->pop();
     });
     go(function () use ($client, $chan) {
         Assert::eq($client->connect(), false);
+        $uuid = uniqid();
         $req = new Request();
         $req->method = 'GET';
-        $req->path   = '/io?io=xxx';
+        $req->path = '/base64/' . base64_encode($uuid);
         $client->send($req);
         $chan->push(true);
         Assert::eq($client->recv(), false);