OnCommittedResponseWrapper#trackContentLength(String content) behavior is invalid

[im-scooter]

OnCommittedResponseWrapper#trackContentLength(String content) behavior is invalid.
Now method uses content.length() to get string size. Further this value used to determinate output buffer capacity. Unfortunately this approach doesn't work for localized strings, thus localized string takes 1-2 bytes for UTF-8 encoding, For Jetty HttpServletResponse#bufferSize() returns size of in bytes internal buffer . So when OnCommittedResponseWrapper#doOnResponseCommitted() is called first time response is committed and no way to set session cookie.

[rwinch]

Thanks for the report @im-scooter! Can you setup an integration test that demonstrates this issue?

[im-scooter]

Unfortunately full integration test requires too complicated code. But here is a simple example demonstrated this issue

`
String test="\u041d\u0430\u043f\u0438\u0441\u0430\u0442\u044c\n\r";

    ByteArrayOutputStream bo = new ByteArrayOutputStream();
    // Set Content-Type: */*;charset=utf-8
    PrintWriter writer = new PrintWriter(new OutputStreamWriter(bo, "UTF-8"));
    writer.wrirte(test); 
    writer.flush();

    // OnCommittedResponseWrapper#trackContentLength(String content) 
    int excpectedLength = test.length(); 
    int realLength = bo.toByteArray().length; // read writed length 
    System.out.println(excpectedLength + " <> "  + realLength);

`