Compiling a Random Fingerprint Browser - Disabling WebRTC

This article will explain what a WebRTC fingerprint is and how to disable WebRTC, helping you solve the problem.

1.What is WebRTC?

WebRTC (Web Real-Time Communication) enables web browsers to conduct real-time voice calls, video chats, and perform peer-to-peer file sharing. It is an extremely practical technology. Its development team includes engineers and researchers from around the globe, and it is now widely adopted in scenarios such as video conferencing and online education.

2.How to disable WebRTC?

This guide assumes you have already successfully compiled the browser source code.

Locate the source code file: \third_party\blink\renderer\modules\peerconnection\rtc_peer_connection.cc

First, find the following code:

ScriptPromise<IDLUndefined> RTCPeerConnection::setLocalDescription(
    ScriptState* script_state,
    const RTCSessionDescriptionInit* session_description_init,
    ExceptionState& exception_state) {
  if (closed_) {
    exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
                                      kSignalingStateClosedMessage);
    return EmptyPromise();
  }

Secondly, replace the original code with this modified version:

ScriptPromise<IDLUndefined> RTCPeerConnection::setLocalDescription(
    ScriptState* script_state,
    const RTCSessionDescriptionInit* session_description_init,
    ExceptionState& exception_state) {
  if (!closed_) {
    exception_state.ThrowDOMException(DOMExceptionCode::kInvalidStateError,
                                      kSignalingStateClosedMessage);
    return EmptyPromise();
  }

The logic behind this modification is to forcibly interrupt and disrupt WebRTC's normal operation flow, preventing it from correctly returning the expected data or state.
Finally, compile the browser using the appropriate command, for example:
ninja -C out/Default chrome
Once the compilation is complete, websites will be unable to detect your real IP address through WebRTC, effectively protecting your IP information.