WebRTC is a new browser API that brings real-time communications to the browser. The new technology combines all the Web’s capabilities with the world of telecommunications. The telecommunications industry was valued at $4.7 trillion in 2012, so WebRTC is a significant development for the industry. As a result, many telecom vendors are closely monitoring this new technology. But WebRTC is more than a new browser API.
There are a lot of discussions on what is WebRTC protocol. Basically, these are a set of protocols and APIs known as WebRTC that enables real-time peer-to-peer and group communication, including voice, video, chat, file transfer, and screen sharing. WebRTC enables web browsers to request real-time information from the browsers of other users. SRTP is a secure protocol that allows users to create and send encrypted audio and video connections over the Internet. It is an extension of the TLS protocol. Its main features are end-to-end encryption, peer-to-peer security, and support for nearly any server arrangement. However, there are several security issues associated with WebRTC.
The most common security vulnerability in WebRTC is IP leakage. WebRTC can leak video and IP addresses if the browser doesn’t implement security measures. It can also lead to privacy issues as video and audio are recorded without the user’s knowledge. Fortunately, this security flaw is preventable mainly by using an encryption-level channel and a secure HTTP version.
SRTP also uses an encryption mechanism known as SDES to secure the media channel. This prevents unauthorized parties from intercepting and decrypting the content of the communication. It also prevents people from using man-in-the-middle attacks. In addition, DTLS-SRTP uses a secure encryption key exchange protocol, which requires the keys to be transmitted directly on the media plane.
WebRTC uses several standards to implement and support real-time communication. These standards cover browser APIs and application APIs. They are operated by RTCWEB – an IETF working group – and the WEBRTC – W3C Working Group. They aim to allow real-time communication between browsers and applications while seamlessly integrating with existing communication infrastructures.
HTML5 media APIs
Encrypted Media Extensions (EME) is a new API that enables customers to choose their own encryption rules for media content. This API is part of the W3C specification and is designed to help secure digital media content for web applications. This scheme uses metadata from the range to prevent unauthorized downloads and playback.
In addition to enabling programmatic access to data, HTML5 supports embedded HTML Microdata (MIME) files. The new standard defines a parsing model for this data and is compatible with many data formats. HTML5 also supports Programmable HTTP Caching and Serving (PHCaS), which defines APIs for an offline serving of HTML5 applications.
Web Workers API
Web Workers are threads in the background that perform application functions and can communicate with the main line. This allows heavy tasks to be performed in the environment, and they can notify the main page when their execution is complete. This approach saves operating system resources. A Web Worker is typically used for tasks requiring many resources.
Web Workers have two types. The first type is dedicated, and the second type is shared. A dedicated worker listens for messages sent from the main thread and sends back a message. The messages can be any data. However, dedicated workers can only be accessed from the file where they were created, whereas shared workers can be accessed by multiple files and have different usage.
The Web Workers API can be used to accelerate processing and increase productivity. It’s important to note that the worker cannot access DOM elements or global variables. It needs to send processed data back to the main thread, which is done through a Data Packet called a Message. It can also specify a security policy to limit what it can access.
Using a Web Workers API in your application, you can use a polyfill library instead of writing your own worker implementation. However, this can lead to more bloat and potential points of failure. Additionally, building applications with two different APIs can be challenging. If possible, use a directly compatible web workers API for your applications.