What does NSPOSIXErrorDomain mean (iPhone)?

I am trying to use the ASIHTTPRequest libraries to simulate a form post and gather the resulting开发者_Go百科 cookies; however, when I am running the post, I get an error. I have traced through the request and narrowed it down to a NSPOSIXErrorDomain error. The site I am trying to connect too is an HTTPS: site and this error makes me think it has something to do with that. Does anyone have any helpful insight they would be willing to share with this iOS rookie? Thanks!

Solved: Developed a different workaround. Still don't know what was causing this.