Category Archives: binding

Apache Testing-Port/socket issue

Ok so I'm using Linux and I have configured Apache,APR,APR-util, and I went to test Apache via ((usr/sbin/apachectl start)) & this comes up:


httpd: Could not reliably determine the server's fully qualified domain name, using for ServerName

(13)Permission denied: make_sock: could not bind to address [::]:80

(13)Permission denied: make_sock: could not bind to address

no listening sockets available, shutting down

Unable to open logs


From the research Ive done the first warning can be safely ignored and to edit the listening sockets you edit the http.conf file to include : Listen [port#], but no matter what I put the SAME thing comes up about port 80.

Ive tried Listen 90,Listen 9540, Listen with the ip address and port # and nothing changes the message

Any ways to fix this?

Apache Tapestry 5 property binding – ERROR

Helo. I am having problem binding a property from code behind to frontend and can't seem to figure out what is the problem.

The code behind is the following (

private String userEmail;

public String getUserEmail()
    userEmail = getUser() == null ? "Not logged in" : getUser().getName();
    return userEmail;

public Users getUser()
    return login.isLoggedIn() ? login.getLoggedUser() : null;

This how i am trying to display it in the .tml file (Layout.tml):


If for example, in the getUserEmail() function i just return a simple string, it is displayed. When i do it like this, i get the following error:

Render queue error in Expansion[PropBinding[expansion Index:layout(userEmail)]]: org.apache.tapestry5.ioc.internal.util.TapestryException

Could anyone please tell what i am doing wrong?

Best regards, Marius.