客户端 2 生成答案(使用 createAnswer)，而不是要约.主要区别在于答案是报价中包含的功能(如编解码器)的子集.

Client 2 generates an answer (using createAnswer), not an offer. The main difference is that an answer is a subset of the capabilities (like codecs) contained in the offer.

否则这听起来不错.