1. RFC official website
RFC official website address: https://www.rfc-editor.org/
2. How to download TCP, UDP, IP, ICMP protocol documents
After entering the official website home page, click Internet Standardinto the Internet standard protocol list, we need to have at the bottom of that page TCP, UDP, IP, ICMPthe protocol document.
The current main agreement documents are as follows:
| RFC number | description |
|---|---|
| RFC 793 | TCP standard protocol document |
| RFC 792 | ICMP (Internet Control Message Protocol) document |
| RFC 791 | IP standard protocol document |
| RFC 768 | UDP standard protocol document |
3. How to download application layer protocol documents such as HTTP, FTP, RTSP, etc.
After entering the homepage of the RFC official website, click on the left to Document Retrievalenter the document index page, and I can download the corresponding application layer protocol document as needed.
