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Phusion Passenger 4.0.46 released

By Hongli Lai on July 16th, 2014

Phusion Passenger is a fast and robust web server and application server for Ruby, Python, Node.js and Meteor. Passenger takes a lot of complexity out of deploying web apps, and adds powerful enterprise-grade features that are useful in production. High-profile companies such as Apple, New York Times, AirBnB, Juniper, American Express, etc are already using it, as well as over 350.000 websites.

Phusion Passenger is under constant maintenance and development. Version 4.0.46 is a bugfix release.

Phusion Passenger also has an Enterprise version which comes with a wide array of additional features. By buying Phusion Passenger Enterprise you will directly sponsor the development of the open source version.

Recent changes

Most notable changes:

  • Further improved Node.js and compatibility.
  • Sticky session cookies have been made more reliable.
  • Fixed WebSocket upgrade issues on Firefox. Closes GH-1232.
  • Improved Python compatibility.
  • Logging of application spawning errors has been much improved. Full details
    about the error, such as environment variables, are saved to a private log file.
    In the past, these details were only viewable in the browser. This change also
    fixes a bug on Phusion Passenger Enterprise, where enabling Deployment Error
    Resistance causes error messages to get lost. Closes GH-1021 and GH-1175.
  • Passenger Standalone no longer, by default, loads shell startup files before
    loading the application. This is because Passenger Standalone is often invoked
    from the shell anyway. Indeed, loading shell startup files again can interfere
    with any environment variables already set in the invoking shell. You can
    still tell Passenger Standalone to load shell startup files by passing
    --load-shell-envvars. Passenger for Apache and Passenger for Nginx still
    load shell startup files by default.
  • If you are a Union Station customer, then
    Phusion Passenger will now also log application spawning errors to Union Station.
    This data isn’t shown in the Union Station interface yet, but it will be
    implemented in the future.

Minor changes:

  • The Python application loader now inserts the application root into sys.path.
    The fact that this was not done previously caused a lot of confusion amongst
    Python users, who wondered why their could not import any
    modules from the same directory.
  • Fixed a compatibility problem with Django, which could cause Django apps to
    freeze indefinitely. Closes GH-1215.
  • Fixed a regression in Node.js support. When a Node.js app is deployed on
    a HTTPS host, the X-Forwarded-Proto header wasn’t set in 4.0.45.
    Closes GH-1231.
  • Passenger Standalone now works properly when the HOME environment variable
    isn’t set. Closes GH-713.
  • Passenger Standalone’s package-runtime command has been removed. It has
    been broken for a while and has nowadays been obsolete by our automatic
    binary generation system.
    Closes GH-1133.
  • The passenger_startup_file option now also works on Python apps. Closes GH-1233.
  • Fixed compilation problems on OmniOS and OpenIndiana. Closes GH-1212.
  • Fixed compilation problems when Nginx is configured with OpenResty.
    Thanks to Yichun Zhang. Closes GH-1226.
  • Fixed Nginx HTTP POST failures on ARM platforms. Thanks to nocelic for the fix.
    Closes GH-1151.
  • Documentation contributions by Tim Bishop and Tugdual de Kerviler.
  • Minor Nginx bug fix by Feng Gu. Closes GH-1235.

Installing or upgrading to 4.0.46

OS X OS X Debian Debian Ubuntu Ubuntu
Heroku Heroku Ruby gem Ruby gem Tarball Tarball


Phusion Passenger’s core is open source. Please fork or watch us on Github. 🙂

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