diff --git a/mozilla/netwerk/base/public/netCore.h b/mozilla/netwerk/base/public/netCore.h
index 676c6354ca7..a3ad17d1e49 100644
--- a/mozilla/netwerk/base/public/netCore.h
+++ b/mozilla/netwerk/base/public/netCore.h
@@ -23,6 +23,11 @@
 
  /* networking error codes */
 
+// NET RANGE:   1 -20
+// FTP RANGE:   21-30
+// HTTP RANGE:  31-40
+// DNS RANGE:   41-50 
+
 #define NS_ERROR_ALREADY_CONNECTED \
     NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 1)
 
@@ -38,4 +43,7 @@
 #define NS_ERROR_TCP_TIMEOUT \
     NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 5)
 
+#define NS_ERROR_IN_PROGRESS \
+    NS_ERROR_GENERATE_FAILURE(NS_ERROR_MODULE_NETWORK, 6)
+
 #endif // __netCore_h__
\ No newline at end of file