c++ - Dtls client doesn't send ClientHello with cookie

Question

I'm implementing dtls support for my sip client, using openssl. My SSL_connect returns SSL_ERROR_WANT_READ, my 'select' to handle it always timeout. In wireshark I saw a first ClientHello and HelloVerifyRequest, but second ClientHello with cookie never came.

Answer 1

事实证明，在同一个端口上还有另一个套接字正在侦听。我解决了这个问题，并且有第二个带有 cookie 的 ClientHello。稍后我还有其他问题，但会提出另一个问题。谢谢。