ITVDesk RTSP over HTTP

Incorporating RTSP streaming through HTTP, ITVDesk stands out by offering a seamless solution to bypass network restrictions commonly posed by firewalls and security policies. Traditionally, RTSP employs port 554, which can be obstructed by stringent security configurations, thus impeding the smooth transmission of RTSP packets. ITVDesk addresses this challenge by routing RTSP packets via the universally accessible HTTP port (port 80), a method that not only enhances compatibility but also ensures uninterrupted streaming even in restricted network environments.Here's how ITVDesk facilitates RTSP over HTTP:Initially, a client establishes two pivotal connections to the ITVDesk server's HTTP ports, labeled as "data socket" and "command socket."

1. The procedure begins with the client issuing an HTTP GET request through the "data socket," aiming to initiate an RTSP connection.
2. The server acknowledges this attempt via the same "data socket," signaling a successful or failed attempt.
3. Subsequently, through the "command socket," the client dispatches an HTTP POST request to set up the RTSP session, marking the completion of HTTP's auxiliary function without awaiting a response to the POST command.

This innovative approach allows standard RTSP communication to proceed over HTTP, utilizing a dual-socket system where the "command socket" is dedicated to sending commands, and the "data socket" is reserved for receiving server responses.

1. The client sends RTSP commands, encoded in BASE64, via the "command socket."
2. Responses from the server, presented in plain text, are relayed through the "data socket."
3. This exchange continues until the RTSP PLAY command is issued and acknowledged, paving the way for audio and video data streaming.
4. The server then streams multimedia content to the client through the "data socket."
5. The session concludes with the client sending an RTSP TEARDOWN command in BASE64 through the "command socket."
6. The server's plain-text response to this command is received via the "data socket."
7. The closure of both sockets marks the end of the session.

By supporting RTSP over HTTP, ITVDesk provides a robust solution for users seeking reliable and unrestricted access to video surveillance streams, ensuring that security monitoring remains effective and adaptable to various network configurations.