pyopenssl-list

[pyOpenSSL] How to detect if a port has SSL running?

[Marlon J. <mj...@te...>]

Hi list,
I've been using pyOpenSSL for a while and I have a problem that I could 
not solve and maybe someone can help me. 
My problem is how do I detect if a arbitrary port is running or not SSL?
When I establish a connection with a non-ssl server and I try to send
some data it hangs forever, I'm  guessing that the problem is that the 
SSL handshake never completes, but how can I catch this error in a
script?

Thanks,
Marlon

Re: [pyOpenSSL] How to detect if a port has SSL running?

[Martin <md...@md...>]

tis 2003-01-14 klockan 14.14 skrev Marlon Jabbur:
> Hi list,
> I've been using pyOpenSSL for a while and I have a problem that I could=20
> not solve and maybe someone can help me.=20
> My problem is how do I detect if a arbitrary port is running or not SSL?
> When I establish a connection with a non-ssl server and I try to send
> some data it hangs forever, I'm  guessing that the problem is that the=20
> SSL handshake never completes, but how can I catch this error in a
> script?

I think it depends on the SSL version, and I think it is better to ask
this question on the openssl-users mailing list.

I'm not sure you would *want* to be able to detect it (other than timing
out) since it invites solutions on the form "Try SSL and if that fails,
revert to non-encrypted communication" which in turn invites downgrade
attacks from a malicious party. I think. :)


/Martin