Remove Connection: close header for 501 error handling rest Ralf doesn't know why the "Connection: close" header was added. Was there since the original code to support OPTIONS verb was added. He agrees it can be removed. Enable test for that code path.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))