Fix secure socket tests to close sockets after writing. Fix handling of close events in TlsSocket …

tests/standalone/io/tls_socket_test.dart

Index: tests/standalone/io/tls_socket_test.dart
diff --git a/tests/standalone/io/tls_socket_test.dart b/tests/standalone/io/tls_socket_test.dart
index 061d93f8f5af2564acdc436cdbb93723b8d2d62a..cc9950feec84ae728564a261a723eb488192f560 100644
--- a/tests/standalone/io/tls_socket_test.dart
+++ b/tests/standalone/io/tls_socket_test.dart
@@ -26,6 +26,7 @@ void main() {
       "GET / HTTP/1.0\r\nHost: www.google.dk\r\n\r\n".charCodes;
     tls.writeList(request_bytes, 0, 20);
     tls.writeList(request_bytes, 20, request_bytes.length - 20);
+    tls.close(true);
   };
   var useReadList;  // Mutually recursive onData callbacks.
   void useRead() {
@@ -45,6 +46,5 @@ void main() {
   tls.onClosed = () {
     String fullPage = Strings.concatAll(chunks);
     Expect.isTrue(fullPage.contains('</body></html>'));
-    tls.close();
   };
 }