HttpWebRequest保持连接并重复使用

Question

So my basic idea is to create emails(yahoo for example) but for this purpose i need to open the connection, pass the captcha and then return it to the same connection so the captcha is still the same. I just need to know how to do that. I hope you got my question.

Answer 1

A CAPTCHA shouldn't require that the connection is kept alive. It should include some sort of token identifying the challenge in an opaque way - so long as you present that back to the server within the subsequent request, it should be fine.

(As it happens, HttpWebRequest does reuse connections, but that's an implementation detail you don't need to be aware of in most cases.)