RTSP over HTTP/HTTPS
基於 HTTP/HTTPS 的 RTSP
The key of RTSP over HTTP is to allow RTSP packets to communicate via HTTP port. We know that the standard port of RTSP is 554, but due to various security policy configurations such as firewalls, there may be restrictions when the client accesses port 554, which prevents the normal transmission of RTSP packets. But the HTTP port (port 80) is generally open, so there is the idea of letting RTSP packets pass through port 80, namely RTSP over HTTP.
RTSP over HTTP 的關鍵是允許 RTSP 數據包通過 HTTP 端口進行通信。我們知道RTSP的標準端口是554，但是由於防火牆等各種安全策略配置，客戶端訪問554端口時可能會有限制，導致RTSP報文無法正常傳輸。但是HTTP端口（80端口）一般都是開放的，所以就有了讓RTSP包通過80端口的想法，即RTSP over HTTP。