Browser-compatible signaling
CreateOffer, CreateAnswer, SetLocalDescription, SetRemoteDescription and AddIceCandidate build and consume real SDP. Renegotiation, ICE restart and the W3C perfect-negotiation glare rule are built in.
sgcWebRTC Calls and data, peer to peer. No browser inside.
sgcWebRTC is the WebRTC media engine for Delphi and C++ Builder. Add real-time audio and video calls, screen sharing and SCTP data channels to your applications, encrypted with DTLS-SRTP and interoperable with the RTCPeerConnection in any browser. It is compiled Object Pascal calling the operating system's own media APIs, with no WebView and no JavaScript bridge in your process.
- Delphi
- C++ Builder
- Windows, Linux, macOS
- iOS & Android
- STUN / TURN / ICE
- No WebView required
- 1Component for the whole peer connection
- 5Platforms: Windows, Linux, macOS, iOS and Android
- 5Codecs: Opus, G.711, VP8, H.264 and Motion JPEG
- 100%Of RTP, RTCP and SCTP packets encrypted
- 0Browsers or WebViews in your process
Watch it work
See sgcWebRTC in two minutes.
Peer-to-peer media and data channels from Delphi: STUN, TURN, ICE and RTCPeerConnection, browser to native. Narrated, with captions. Nothing downloads until you press play.
One component
The whole peer connection on one object.
sgcWebRTC does not add new palette components. It unlocks the rest of the W3C-shaped surface on the same TsgcRTCPeerConnection that ships in sgcWebSockets Enterprise: signaling, connectivity, encryption, data channels and media.
STUN, TURN and ICE
Trickle or non-trickle ICE gathering against RTCOptions.ICEServers, with server-reflexive candidates from STUN and relayed candidates from TURN when a direct path is blocked.
DTLS-SRTP encryption
A DTLS handshake over the nominated ICE pair derives the SRTP keys, and every RTP, RTCP and SCTP packet is encrypted from the first packet. It cannot be turned off for media, the same model a browser enforces.
Audio and video tracks
AddTrack attaches an Opus or G.711 audio track, or a VP8, H.264 or Motion JPEG video track. H.264 uses the platform's hardware encoder: Media Foundation, VideoToolbox or MediaCodec.
SCTP data channels
CreateDataChannel opens an ordered or unordered, reliable or partially reliable channel (RFC 8831/8832). Send, SendBytes, OnMessage and OnMessageBinary move text and binary payloads.
Adaptive bitrate
A delay-based estimator in the style of Google Congestion Control drives the video encoder's target bitrate, backed by RTCP NACK and PLI, RFC 4588 RTX and RED/ULPFEC.
QuickStart
An offer, and a data channel.
Set an ICE server, hook the SDP and ICE events, open a data channel, then create the offer. The same API in Delphi and C++ Builder.
uses
sgcP2P;
var
oRTC: TsgcRTCPeerConnection;
begin
oRTC := TsgcRTCPeerConnection.Create(nil);
oRTC.RTCOptions.ICEServers.AddURL('stun:stun.l.google.com:19302');
oRTC.OnLocalDescription := OnLocalDescriptionHandler;
oRTC.OnICECandidate := OnICECandidateHandler;
oRTC.OnConnectionStateChange := OnConnectionStateChangeHandler;
oRTC.OnDataChannel := OnDataChannelHandler;
oRTC.CreateDataChannel('chat'); // forces RTCOptions.DTLS on
oRTC.CreateOffer; // gathers ICE candidates, builds the SDP offer
end;
procedure TForm1.OnLocalDescriptionHandler(Sender: TObject;
const aType, aSDP: string);
begin
// send aType + aSDP to the remote peer over your own signaling channel
end;
procedure TForm1.OnDataChannelHandler(Sender: TObject;
aChannel: TsgcRTCDataChannel);
begin
aChannel.OnMessage := OnChannelMessageHandler;
aChannel.Send('hello');
end;// includes: sgcP2P.hpp
TsgcRTCPeerConnection *oRTC = new TsgcRTCPeerConnection(NULL);
oRTC->RTCOptions->ICEServers->AddURL("stun:stun.l.google.com:19302");
oRTC->OnLocalDescription = OnLocalDescriptionHandler;
oRTC->OnICECandidate = OnICECandidateHandler;
oRTC->OnConnectionStateChange = OnConnectionStateChangeHandler;
oRTC->OnDataChannel = OnDataChannelHandler;
oRTC->CreateDataChannel("chat"); // forces RTCOptions->DTLS on
oRTC->CreateOffer(); // gathers ICE candidates, builds the SDP offer
void __fastcall TForm1::OnLocalDescriptionHandler(TObject *Sender,
const String aType, const String aSDP)
{
// send aType + aSDP to the remote peer over your own signaling channel
}
void __fastcall TForm1::OnDataChannelHandler(TObject *Sender,
TsgcRTCDataChannel *aChannel)
{
aChannel->OnMessage = OnChannelMessageHandler;
aChannel->Send("hello");
}- Point it at a STUN or TURN serverAdd the ICE servers to RTCOptions.ICEServers. Candidates are gathered against them, trickled or all at once.
- Carry the SDP over your own channelOnLocalDescription hands you the offer or answer, OnICECandidate each candidate. Send them through any signaling server, exactly as a browser application does.
- Talk peer to peerOnce the DTLS handshake completes, data channels open and audio and video tracks flow straight between the peers, encrypted.
That is one side of the exchange. The other side, the signaling relay and the media tracks on top are in the task guide.
Where it fits
WebRTC without embedding a browser.
Other approaches to WebRTC in Delphi embed a full browser engine and drive its JavaScript stack from Pascal. sgcWebRTC calls the operating system's media APIs directly, which keeps the binary small and lets the same component run where no browser is installed at all.
Delphi app to browser
Standard SDP and the JSEP state machine (RFC 8829) mean a native Delphi or C++ Builder client can call the RTCPeerConnection in a web page, and the other way round.
Delphi app to Delphi app
Two native applications exchange audio, video and data channels directly, with only the signaling passing through your server.
Read the task guide →Mobile, headless and kiosk
No embedded Chromium binary means the same component runs on Android and iOS, and in headless services or kiosk devices with no browser installed.
Screen sharing and remote support
Capture the desktop, a monitor, a window or a region on Windows, cursor included, and stream it as a video track with a data channel alongside.
Voice and video calls
Native camera and microphone capture backends on Windows, Linux, Apple platforms and Android feed the tracks directly, and renderer backends show the remote video.
Low-latency data links
Use data channels on their own for chat, telemetry, file transfer or game state, with the reliability and ordering chosen per channel.
Licensing
An add-on to sgcWebSockets Enterprise.
sgcWebRTC unlocks the media engine on the TsgcRTCPeerConnection that sgcWebSockets Enterprise already ships with ICE and TURN connectivity. It is not available for Standard or Professional. Every license includes full source code and one year of updates.
sgcWebSockets Enterprise
The base it builds on: STUN, TURN and ICE clients, the base TsgcRTCPeerConnection, plus WebSocket, HTTP/2, MQTT and the rest of the library.
€699 / developer
sgcWebRTC
SDP signaling, DTLS-SRTP, SCTP data channels, audio and video tracks, screen capture and bandwidth estimation. Single, Team and Site licenses.
€299 / developer
All-Access bundle
Every eSeGeCe product for one year, Delphi and .NET, sgcWebSockets Enterprise and sgcWebRTC included, with Premium Support.
€1,059 / developer
The trial installer is per IDE version and already contains the WebRTC components, so there is no separate download.
See sgcWebRTC pricingPut a real peer connection behind your Delphi app.
Audio, video and data channels, encrypted end to end, from the language you already use.
More from eSeGeCe.
sgcWebRTC sits alongside the components Delphi, C++ Builder, Lazarus and .NET developers already use for networking, signing, web interfaces and APIs.
sgcWebSockets
WebSocket, HTTP/2, MQTT, AMQP, WebRTC, AI and 30+ API integrations for Delphi, C++ Builder, Lazarus and .NET. The Enterprise license sgcWebRTC builds on.
sgcQUIC
Raw QUIC transport and an HTTP/3 client and server, with WebTransport. An add-on to sgcWebSockets Enterprise.
sgcUI
14 native UI products for Delphi, C++ Builder and .NET: grid, charts, dashboard, planner, maps, PDF and reports.
sgcHTML
Server-side HTML and UI components on Bootstrap 5 and htmx for Delphi, C++ Builder and .NET.
sgcSign
XAdES, PAdES, CAdES and ASiC for documents, Authenticode, ClickOnce, NuGet and VSIX for code.
Packs, add-ons and more
