Avoid infinite loop of reading no data from a socket in cascade

1 files changed, 2 insertions, 0 deletions

diff --git a/paste/cascade.py b/paste/cascade.py
index 09681d9..fb4ea7b 100644
--- a/paste/cascade.py
+++ b/paste/cascade.py
@@ -91,6 +91,8 @@ class Cascade(object):
                     copy_len = length
                     while copy_len > 0:
                         chunk = environ['wsgi.input'].read(min(copy_len, 4096))
+                        if not chunk:
+                            raise IOError("Request body truncated")
                         f.write(chunk)
                         copy_len -= len(chunk)
                 f.seek(0)