uWSGI 1.9.11

Changelog [20130526]


  • Fixed Python 3 stdout/stderr buffering
  • Fixed mule messages (@mulefunc is now reliable)
  • Fixed SCRIPT_NAME handling in dynamic mode
  • Fixed X-Sendfile with gzip static mode
  • Fixed cache item maximum size with custom block size
  • Fixed cache path handling

New features

The new high-performance PyPy plugin

Credits: Maciej Fijalkowski

We are pleased to announce the availability of the new PyPy plugin.

PyPy team has been great in helping us. We hope the uWSGI integration (that exposed new challenges to the PyPy project) will help PyPy becaming better and better.

Official docs: The PyPy plugin

Cron improvements

Credits: Łukasz Mierzwa

Unique crons

You can now avoid overlapping crons. The uWSGI master will track death of a single task, and until its death the same cron will not be triggered:

unique-cron = -1 -1 -1 -1 -1 my_script.sh

cron2 syntax

A key/value variant of the –cron option is now available:

cron2 = minute=39,hour=23,month=-1,week=-1,day=-1,unique=1,legion=foobar,harakiri=30

harakiri cron

When using the cron2 option you are allowed to set a harakiri timeout for a cron task. Just add harakiri=n to the options.

Support for GNU Hurd

Debian GNU/Hurd has been recently released. uWSGI 1.9.11 can be built over it, however very few tests have been made.

The memory offload engine

Idea: Stefano Brentegani

When serving content from the cache, a worker could get blocked during transfer from memory to the socket.

A new offload engine named “memory” allows to offload memory transfers. The cache router automatically supports it. Support for more areas will be added soon.

To enable it just add --offload-threads <n>

New Websockets chat example

An example websocket chat using Redis has been added to the repository:


Error routes

You can now define a routing table to be executed as soon as you set the HTTP status code in your plugin.

This allows you to completely modify the response. This is useful for custom error codes.

All of the routing standard options are available (included labels) plus an optimized error-route-status matching a specific HTTP status code:

error-route-status = 502 redirect:http://unbit.it

Support for corner case usage in wsgi.file_wrapper

Generally the wsgi.file_wrapper callable expects a file-like object. PEP 333/3333 reports a special pattern when the object is not a file (call read() until the object is consumed). uWSGI now supports this pattern (even if in a hacky way).

HTTP/HTTPS router keepalive improvements

Credits: André Cruz

When using --http-keepalive you can now hold the connection open even if the request has a body.

The harakiri routing action

You can now set a harakiri timer for each request using internal routing:

; set harakiri to 30 seconds for request starting with /slow
route = ^/slow harakiri:30

RPC wrappers

The RPC plugin has been extended to allows interoperation with other standards.

Currently a simple HTTP wrapper and an XML-RPC one are exposed.

The HTTP simple wrapper works by parsing PATH_INFO.

A /foo/bar/test call will result in

uwsgi.rpc(‘foo’, ‘bar’, ‘test’)

To enable this HTTP mode just set the modifier2 to ‘2’:

http-socket = :9090
http-socket-modifier1 = 173
http-socket-modifier2 = 2
; load the rpc code
import = myrpcfuncs.py

or (to have more control)

http-socket = :9090
route-run = uwsgi:,173,2
; load the rpc code
import = myrpcfuncs.py

The XML-RPC wrapper works in the same way, but it uses the modifier2 value ‘3’. It requires a libxml2-enabled build of uWSGI.

http-socket = :9090
route-run = uwsgi:,173,3
; load the rpc code
import = myrpcfuncs.py

Then just call it:

proxy = xmlrpclib.ServerProxy("http://localhost:9090')

You can combine multiple wrappers using routing.

http-socket = :9090
; /xml force xmlrpc wrapper
route = ^/xml uwsgi:,173,3
; fallback to HTTP simple
route-if-not = startswith:${PATH_INFO};/xml uwsgi:,173,2
; load the rpc code
import = myrpcfuncs.py


uWSGI 1.9.11 will be available since 20130526 at: