Can you reference http and https in a sitemap.xml?

[RoxBrock]

I have a site where some pages (in Spanish) are https. The english pages are http. Can you tell me if it's okay to have both in the sitemap.xml?

[Martijn_Scheijbeler]

I think you can, I always would make it two different sitemaps though to also have the data for the specific languages.

[RoxBrock]

After reading some Google documentation I set it up like this:

<url><loc>http://www.mexpro.com/</loc>
  <lastmod>2014-08-25T21:02:47+00:00</lastmod>
  <changefreq>monthly</changefreq>
  <priority>1.00</priority>
  <xhtml:link <br="">rel="alternate"
                 hreflang="es-mx"
                 href="https://www.mexpro.com/mx/"
                 />
  <xhtml:link <br="">rel="alternate"
                 hreflang="en"
                 href="http://www.mexpro.com/"
                 />
  <xhtml:link <br="">rel="canonical"
                 href="http://www.mexpro.com/mexico/"
                 /></xhtml:link></xhtml:link></xhtml:link></url>

Do I need rel="alternate" and rel="canonical" for the sitemap, or is it better to do a traditional sitemap for English and Spanish?Thank you.