中间人网络设备如何完成 TLS extensions 合法插入？

中间人网络设备需要在 Client 和 Server 进行 TLS 握手的过程中，对 client hello 的 TLS extensions 进行插入应该如何完成呢？

Requirements

1. Please recall your first assignment in the summer vacation and your imagination of the software engineering course

(1) Compared with the course objectives and expectations of your first blog, "I hope to enhance the ability and employment competitiveness of computer major through practical exercise". Compared with the current learning and practice, in what aspects have you achieved your expectations and objectives, what are the deficiencies and why?

(2) Summarize the practice a