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problem from out of the blue: can't connect via libcurl

From: Pete Wilson <>
Date: Wed, 9 Dec 2009 03:24:22 -0800 (PST)

Hello everyone --

First-time poster, I apologize if I'm posting in the wrong way.

I'm at a standstill in my development and need help.

The problem environment:

  # curl --version
  curl 7.15.5 (x86_64-redhat-linux-gnu) libcurl/7.15.5 OpenSSL/0.9.8b zlib/1.2.3 libidn/0.6.5

The curl program runs perfectly.

My C-language app (called 'client') uses libcurl and until a few days ago ran flawlessly under Linux on my ISP; and under

Win XP on my local PC.

It still runs great on my PC, but suddenly on Sunday 6 Dec it stopped working on my ISP. The 28 Nov backup of 'client' also

still runs on my PC, but no longer runs on my ISP where it used to run perfectly.

My ISP support assures me that nothing on the server has changed.

The problem: On my ISP, when my app asks libcurl to connect to a remote host, libcurl immediately complains

  * Unsupported protocol: https

Same thing happens with http.

Again, I get no errors at all on my PC version of the identical -- save for a few #ifdefs -- copy of the code.

The questions:

* Do you have any idea what's happening at my ISP?

* If not, how in the world am I going to approach debugging this issue on my ISP? I'm completely stymied.

Thanks, everybody.

-- Pete

List admin:
Received on 2009-12-09