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cURL > Docs > Bug Report

How, Why, And Where to Report Bugs

Of course there are bugs in curl and libcurl. Some are known, but most of them remain unknown to us until you let us know. We depend on bug reports from the users to find the problems. We are not likely to be able to fix bugs if we don't get to know about their existance first. Bugs tend to get fixed within a short while after we've been notified (at least when we agree about it being a bug and not a feature)!

Known Bugs

Some bugs are known to already exist. We try to keep track of them on a separate KNOWN_BUGS document.

How To Report

If you can't fix a bug yourself, file an as detailed a report as possible in the bug tracking system or mail it to a suitable mailing list. Bugs in or improvements to libcurl are best posted to the curl-library list, while bugs in or with the curl tool can be posted to the curl-users list.

If you opt to use one of the mailing lists, notice that you need to be subscribed first to get the mail through to the list!

What To Report

When reporting a bug, try to include information that will help us understand what's wrong, what's expected to happen and how to repeat it. You should supply:

  • your operating system's name and version number
  • what version of curl you're using (curl -V is fine)
  • what URL you were working with
  • everything else you think might matter

Bugs in libcurl bindings

There will of course pop up bugs in libcurl bindings. Try to report those bugs in the correct forum. Here's a collection of links and advice for you!


If you experience problems with the curl module in PHP, and they don't seem to happen with libcurl or curl in other situations, please file the report in the PHP bug tracker. Make sure it's marked as 'cURL related'.

Python -- PycURL

PycURL bug tracker

Rexx -- Rexxcurl

Rexxcurl bug tracker

Tcl -- Tclcurl

Send a very detailed description to Andres Garcia.

Cocoa -- Curlhandle

Curlhandle bug tracker

donate! Page updated April 20, 2009.
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