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Re: Unknown SSL protocol error in connection (bug 1329)

From: Daniel Stenberg <>
Date: Mon, 5 May 2014 20:19:11 +0200 (CEST)

On Mon, 5 May 2014, Quanah Gibson-Mount wrote:

>> If you can come up with a better error message for this, then I'd be very
>> happy to provide that.
> Unknown protocol error is so vague as to offer little clue at all to what
> the source of the error is. If it had even hinted in some way that the
> issue could be an insecure cipher suite, it could have saved us several
> hours of debugging. There is no way for curl to throw back an error when an
> insecure cipher suite is encountered in the handshake?

Not to my knowledge. But I'm not an expert on OpenSSL, feel free to research
this and see if you can come up with an improvement!

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Received on 2014-05-05