implement candidateGenerate function and bring local candidate string back

[wangchauyan]

Hi,

I found this function, got_candidate, collect all local candidates and put them into a candidate list. And then put into a SDP offer. But in some applications, we do need to send each candidate respectively, and you also provide this protocol, candidateGenerate.

So, I implement this and send local candidate back to application for flexible using. Please check, and thanks.

[stefanalund]

I'll have a look beginning of next week. Thanks a lot.

[wangchauyan]

Sure, thanks a lot.

[wangchauyan]

ok, agree, that would be more safer. I will modify it and send to you again, thanks a lot.

[wangchauyan]

just set _selfView / _remoteView to nil after unregistering

[wangchauyan]

I just remove Todo comment / Debug Info line, please check this. Thanks.

[stefanalund]

Landed now, thanks again @wangchauyan!

[wangchauyan]

NP, thanks a lot.