More http -> https.

extending01.xml

@@ -43,7 +43,7 @@
 	<p>
 		The usual solution for this is to pre-allocate workers and simply fail on resource exhaustion: when the web server tries
 		connecting to a saturated transport socket, it fails and the request is rejected by the web server.
-		This is the method used by <a href="http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man8/httpd.8">httpd(8)</a> and other
+		This is the method used by <a href="https://man.openbsd.org/httpd.8">httpd(8)</a> and other
 		servers when using the <q>external process</q> mode.
 		Obviously, this is sub-optimal.
 		Many web servers address this by acting themselves as managers.

tutorial.xml

@@ -40,7 +40,7 @@
 				<a href="snapshots/kcgi.tgz.sha512"><i class="fa fa-fw fa-lock"></i></a>
 				<a href="snapshots"><i class="fa fa-fw fa-archive"></i></a>
 				<a href="https://www.github.com/kristapsdz/kcgi"><i class="fa fa-fw fa-github"></i></a>
-				<span>Built with <a href="https://kristaps.bsd.lv/sblg">sblg</a> on <a href="http://www.openbsd.org">OpenBSD</a></span>
+				<span>Built with <a href="https://kristaps.bsd.lv/sblg">sblg</a> on <a href="https://www.openbsd.org">OpenBSD</a></span>
 			</div>
 		</footer>
 	</body>

tutorial0.xml

@@ -222,8 +222,8 @@ const char *const pages[PAGE__MAX] = {
 	</h3>
 	<p>
 		Installation steps depends on your operating system, web server, and a thousand other factors.
-		I'll stick with the simplest installation using the defaults of <a href="http://www.openbsd.org">OpenBSD</a> with the default
-		web server <a href="http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man8/httpd.8">httpd(8)</a>.
+		I'll stick with the simplest installation using the defaults of <a href="https://www.openbsd.org">OpenBSD</a> with the default
+		web server <a href="https://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man8/httpd.8">httpd(8)</a>.
 		To begin with, configure <span class="file">/etc/httpd.conf</span> with your server's root being in <span
 			class="file">/var/www</span> and FastCGI being in <span class="file">/var/www/cgi-bin</span>.
 		If you've already done this, or have a configuration file in place, you won't need to do this.
@@ -239,10 +239,10 @@ const char *const pages[PAGE__MAX] = {
 }</pre>
 	</figure>
 	<p>
-		Next, we use the <a href="http://man.openbsd.org/rcctl.8">rcctl(8)</a> tool to enable and
-		start the <a href="http://man.openbsd.org/httpd.8">httpd(8)</a> webserver and
-		<a href="http://man.openbsd.org/slowcgi.8">slowcgi(8)</a> wrapper.
-		(The latter is necessary because <a href="http://man.openbsd.org/httpd.8">httpd(8)</a> only
+		Next, we use the <a href="https://man.openbsd.org/rcctl.8">rcctl(8)</a> tool to enable and
+		start the <a href="https://man.openbsd.org/httpd.8">httpd(8)</a> webserver and
+		<a href="https://man.openbsd.org/slowcgi.8">slowcgi(8)</a> wrapper.
+		(The latter is necessary because <a href="https://man.openbsd.org/httpd.8">httpd(8)</a> only
 		directly supports FastCGI, so a proxy is necessary.)
 		Again, you may not need to do this part.
 		We also make sure the instructions on the main page are followed regarding OpenBSD sandboxing in the file-system jail.

tutorial2.xml

@@ -87,8 +87,8 @@ main(void)
 		Our installation process will look a great deal like that of <a href="tutorial0.html">Getting Started with CGI in C</a> except
 		that we'll change our paths around a bit.
 		First, let's configure the web server.
-		I'll assume this is OpenBSD's <a href="http://man.openbsd.org/httpd.8">httpd(8)</a>.
-		The file-format documentation is <a href="http://man.openbsd.org/httpd.conf.5">httpd.conf(5)</a>.
+		I'll assume this is OpenBSD's <a href="https://man.openbsd.org/httpd.8">httpd(8)</a>.
+		The file-format documentation is <a href="https://man.openbsd.org/httpd.conf.5">httpd.conf(5)</a>.
 	</p>
 	<figure class="sample">
 		<pre class="prettyprint lang-sh linenums">server "me.local" {

tutorial4.xml

@@ -122,7 +122,7 @@
 		We use year zero to indicate an invalid specification, and month/day zero to indicate that a month/day value was not specified.)
 	</p>
 	<p>
-		<strong>Editor's note</strong>: remember that <a href="http://man.openbsd.org/strptime">strptime(3)</a> and friends may not be
+		<strong>Editor's note</strong>: remember that <a href="https://man.openbsd.org/strptime">strptime(3)</a> and friends may not be
 		available within a file-system sandbox due to time-zone access, so we need to find another way.
 	</p>
 	<figure class="sample">