SF patch #1055159 via Titus Brown: Document redirect limitation.
Bug fix candidate.
diff --git a/Doc/lib/libcgihttp.tex b/Doc/lib/libcgihttp.tex
index 3381c64..df0728e 100644
--- a/Doc/lib/libcgihttp.tex
+++ b/Doc/lib/libcgihttp.tex
@@ -18,6 +18,11 @@
on Mac OS it will only be able to run Python scripts within the same
process as itself.}
+\note{CGI scripts run by the \class{CGIHTTPRequestHandler} class cannot execute
+redirects (HTTP code 302), because code 200 (script output follows)
+is sent prior to execution of the CGI script. This pre-empts the status
+code.}
+
The \module{CGIHTTPServer} module defines the following class:
\begin{classdesc}{CGIHTTPRequestHandler}{request, client_address, server}
diff --git a/Lib/CGIHTTPServer.py b/Lib/CGIHTTPServer.py
index 47a0e2c..7a5c819 100644
--- a/Lib/CGIHTTPServer.py
+++ b/Lib/CGIHTTPServer.py
@@ -14,6 +14,8 @@
SECURITY WARNING: DON'T USE THIS CODE UNLESS YOU ARE INSIDE A FIREWALL
-- it may execute arbitrary Python code or external programs.
+Note that status code 200 is sent prior to execution of a CGI script, so
+scripts cannot send other status codes such as 302 (redirect).
"""