Index: src/main.c
==================================================================
--- src/main.c
+++ src/main.c
@@ -2429,11 +2429,13 @@
 **   --create            Create a new REPOSITORY if it does not already exist
 **   --page PAGE         Start "ui" on PAGE.  ex: --page "timeline?y=ci"
 **   --files GLOBLIST    Comma-separated list of glob patterns for static files
 **   --localauth         enable automatic login for requests from localhost
 **   --localhost         listen on 127.0.0.1 only (always true for "ui")
+**   --https             signal a request coming in via https
 **   --nojail            Drop root privileges but do not enter the chroot jail
+**   --nossl             signal that no SSL connections are available
 **   --notfound URL      Redirect
 **   -P|--port TCPPORT   listen to request on port TCPPORT
 **   --th-trace          trace TH1 execution (for debugging purposes)
 **   --repolist          If REPOSITORY is dir, URL "/" lists repos.
 **   --scgi              Accept SCGI rather than HTTP
@@ -2490,10 +2492,17 @@
   zAltBase = find_option("baseurl", 0, 1);
   fCreate = find_option("create",0,0)!=0;
   if( find_option("scgi", 0, 0)!=0 ) flags |= HTTP_SERVER_SCGI;
   if( zAltBase ){
     set_base_url(zAltBase);
+  }
+  g.sslNotAvailable = find_option("nossl", 0, 0)!=0;
+  if( find_option("https",0,0)!=0 ){
+    cgi_replace_parameter("HTTPS","on");
+  }else{
+    /* without --https, defaults to not available. */
+    g.sslNotAvailable = 1;
   }
   if( find_option("localhost", 0, 0)!=0 ){
     flags |= HTTP_SERVER_LOCALHOST;
   }
 
@@ -2551,11 +2560,10 @@
   if( g.localOpen ) flags |= HTTP_SERVER_HAD_CHECKOUT;
   db_close(1);
   if( cgi_http_server(iPort, mxPort, zBrowserCmd, zIpAddr, flags) ){
     fossil_fatal("unable to listen on TCP socket %d", iPort);
   }
-  g.sslNotAvailable = 1;
   g.httpIn = stdin;
   g.httpOut = stdout;
   if( g.fHttpTrace || g.fSqlTrace ){
     fprintf(stderr, "====== SERVER pid %d =======\n", getpid());
   }