What is the main difference between HTTP and HTTPS

The main differences between HTTPS and HTTP are as follows:

1. The https protocol requires applying for a certificate from ca. Generally, there are fewer free certificates, so a certain fee is required;

2. http is a hypertext transfer protocol, and information is transmitted in plain text, while https is a secure SSL encrypted transmission protocol;

3. http and https use completely different connection methods. Use The ports are also different, the former is 80 and the latter is 443;

4. The http connection is very simple and stateless;

HTTPS protocol is built by the SSL HTTP protocol and can A network protocol for encrypted transmission and identity authentication, which is more secure than the http protocol.

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