NTLM support

[jayzes]

savonrb/httpi#80 brings in up-to-date NTLM support for HTTPI, so I figured I'd take a stab at putting in the appropriate hooks to do NTLM auth in a Savon client too.

This probably needs to wait for a new version of HTTPI to be released, however, so the dependency version can be bumped too. Happy to make that change and add it to this PR when the new version is out.

[rubiii]

thanks. i need to come up with a release plan for new httpi features in master together with @rogerleite.

[rogerleite]

Nice work! Let's work @rubiii !!! 👷

[rubiii]

@rogerleite i'm hanging around in #httpirb and #savonrb on freenode (just created those) if you have a few minutes.

[Wardrop]

Any update on this. I need to use Savon with SharePoint without screwing around with the configured server-side authentication mechanisms. In other words, I really need NTLM support. By the way, if you do include support, pelase make sure NTLM can be used to retrieve the WSDL as well.

[jayzes]

Looks like HTTPI is still awaiting the next version release for the underlying NTLM support that this patch makes use of.

[rubiii]

@Wardrop i'm not sure that's covered right now (using ntlm for retrieving the wsdl).

[Wardrop]

@rubii It seems to be working with basic authentication. I know that Savon 1.x didn't use to work like this.

[rubiii]

merged into the version2 branch.