Question

Some mobile gateways are passing custom headers to my site. These headers are passed in various formats, sometimes, x-msisdn, sometimes x-up-calling-line-id and others. How can I log all headers passed in my custom log format?

Answer 1

Via Apache HTTPD I’m not sure how to log all headers – only how to log one header that you know about.

Using the standard Apache httpd module mod_log_config you can specify the following option in the CustomLog directive.

%{Foobar}i The contents of Foobar: header line(s) in the request sent to the server. Changes made by other modules (e.g. mod_headers) affect this.

However you could do this in jsp (if this is what you’re using by chance)

<!-- method used to send request
<%= request.getMethod() %>

URI of the request
<%= request.getRequestURI() %>

  <%
     /*This method returns an enumeration of all the header names this 
       request contains.*/       
  java.util.Enumeration names = request.getHeaderNames();
  while (names.hasMoreElements()) {
     String hname = (String)names.nextElement();
  %>

     <%= hname %>
     <%= request.getHeader(hname) %>
  <%
  }
  %>
--!>