pion/dtls only supports DTLS v1.2 and doesn't properly handle exiting on older versions

[voidmoda]

Your environment.

• Version: dtls@v1.3.5
• Browser: echo show
• Other Information - I am new to TLS but here's my findings now. According to [RFC5246 7.4.3][https://tools.ietf.org/html/rfc5246#section-7.4.3] it's not legal to send ServerKeyExchange message for RSA while pion/dtls keeps waiting for ServerKeyExchange message in flight3 of client_handlers.go

What did you do?

What did you expect?

What happened?

[Sean-Der]

Hey @estasig!

Good news, Alexa.RTCSessionController is upgrading to DTLSv1.2!

I haven't gotten any timelines yet, but I was able to get through to the right people. Thank you for reporting this and reaching out on reddit :)

[Sean-Der]

@estasig I am going to close as a dupe of #3, but please re-open if you disagree.

pion/dtls can be better by actually checking and giving a good error message.

[Sean-Der]

@estasig This is happening this week! Starting next week you will be able to use Pion with the echo device.

thanks for using Pion and reporting this :)