added assertions for not getting unicode strings

2 files changed, 4 insertions, 0 deletions

diff --git a/wsgitools/scgi/asynchronous.py b/wsgitools/scgi/asynchronous.py
index bdb2a20..4953b05 100644
--- a/wsgitools/scgi/asynchronous.py
+++ b/wsgitools/scgi/asynchronous.py
@@ -54,6 +54,7 @@ class SCGIConnection(asyncore.dispatcher):
 
     def _wsgi_write(self, data):
         assert self.state >= SCGIConnection.REQ
+        assert isinstance(data, str)
         if data:
             self._try_send_headers()
             self.outbuff += data
@@ -150,6 +151,7 @@ class SCGIConnection(asyncore.dispatcher):
         if len(self.outbuff) < self.BLOCK_SIZE:
             self._try_send_headers()
             for data in self.wsgihandler:
+                assert isinstance(data, str)
                 if data:
                     self.outbuff += data
                     if len(self.outbuff) >= self.BLOCK_SIZE:
diff --git a/wsgitools/scgi/forkpool.py b/wsgitools/scgi/forkpool.py
index 157e320..4a07740 100644
--- a/wsgitools/scgi/forkpool.py
+++ b/wsgitools/scgi/forkpool.py
@@ -58,6 +58,7 @@ class SocketFileWrapper:
         pass
     def write(self, data):
         """see pep333"""
+        assert isinstance(data, str)
         self.sock.send(data)
     def writelines(self, lines):
         """see pep333"""
@@ -229,6 +230,7 @@ class SCGIServer:
         assert hasattr(result, "__iter__")
 
         for data in result:
+            assert isinstance(data, str)
             con.send(data)
         if hasattr(result, "close"):
             result.close()