Index: openacs-4/packages/acs-tcl/tcl/security-procs.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/acs-tcl/tcl/security-procs.tcl,v
diff -u -r1.78.2.38 -r1.78.2.39
--- openacs-4/packages/acs-tcl/tcl/security-procs.tcl	1 Dec 2016 14:31:01 -0000	1.78.2.38
+++ openacs-4/packages/acs-tcl/tcl/security-procs.tcl	1 Dec 2016 14:37:42 -0000	1.78.2.39
@@ -2023,7 +2023,17 @@
         if {[info exists $globalTokenName]} {
             set token [set $globalTokenName]
         } else {
-            set session_id [::security::csrf::session_id]
+            if {![ns_conn isconnected]} {
+                #
+                # Must be a background job, take the address
+                #
+                set session_id [ns_info address]
+            } else {
+                #
+                # Anonymous request, use a peer address as session_id
+                #
+                set session_id [ad_conn peeraddr]
+            }
             set secret [ns_config "ns/server/[ns_info server]/acs" parametersecret ""]
             
             if {[info commands ::crypto::hmac] ne ""} {