Handle IPv6 addresses in full_uri (add brackets)

Author: wvu

lib/msf/core/exploit/http/client.rb

@@ -474,7 +474,13 @@ def full_uri(custom_uri = nil)
 
     uri = normalize_uri(custom_uri || target_uri.to_s)
 
-    "#{uri_scheme}://#{rhost}#{uri_port}#{uri}"
+    if Rex::Socket.is_ipv6?(rhost)
+      uri_host = "[#{rhost}]"
+    else
+      uri_host = rhost
+    end
+
+    "#{uri_scheme}://#{uri_host}#{uri_port}#{uri}"
   end
 
   #