From f0c247e4effd80537a170136c7a9acd9cd49373c Mon Sep 17 00:00:00 2001
From: Bruce Flynn <brucef@ssec.wisc.edu>
Date: Tue, 15 Sep 2015 18:48:55 +0000
Subject: [PATCH] honor secondary_header flag, return None impl

---
 edosl0util/stream.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/edosl0util/stream.py b/edosl0util/stream.py
index e06237f..1f90377 100644
--- a/edosl0util/stream.py
+++ b/edosl0util/stream.py
@@ -71,6 +71,8 @@ class SequenceId(object):
 
 
 def default_header_lookup(primary_header):
+    if not primary_header.secondary_header_flag:
+        return None
     return (
         headers.aqua_header_lookup(primary_header) or
         headers.jpss_header_lookup(primary_header)
-- 
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