broadcast-box/examples/simple-watcher.html at main · Glimesh/broadcast-box · GitHub

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<!--
  This example demonstrates how to watch a stream without libraries or dependencies.
  With this HTML you can add a 'Broadcast Box Player' to any site you want
-->

<html>
  <head>
    <title>simple-watcher</title>
  </head>

  <body>
    <b> WHEP URL </b> <input type="text" value="https://b.siobud.com/api/whep" id="whepURL" /> <br />
    <b> Stream Key </b> <input type="text" id="streamKey" /> <br />
    <button onclick="window.watchStream()"> Watch Stream </button>

    <h3> Video </h3>
    <video id="videoPlayer" autoplay muted controls style="width: 500"> </video>

    <h3> Connection State </h3>
    <div id="connectionState"></div> <br />
  </body>

  <script>
    window.watchStream = () => {
      const whepURL = document.getElementById('whepURL').value
      if (whepURL === '') {
        return window.alert('WHEP URL must not be empty')
      }

      const streamKey = document.getElementById('streamKey').value
      if (streamKey === '') {
        return window.alert('Stream Key must not be empty')
      }

      let peerConnection = new RTCPeerConnection()
      peerConnection.addTransceiver('audio', { direction: 'recvonly' })
      peerConnection.addTransceiver('video', { direction: 'recvonly' })

      peerConnection.ontrack = function (event) {
        document.getElementById('videoPlayer').srcObject = event.streams[0]
      }

      peerConnection.oniceconnectionstatechange = () => {
        document.getElementById('connectionState').innerText = peerConnection.iceConnectionState;
      }

      peerConnection.createOffer().then(offer => {
        peerConnection.setLocalDescription(offer)

        fetch(whepURL, {
          method: 'POST',
          body: offer.sdp,
          headers: {
            Authorization: `Bearer ${streamKey}`,
            'Content-Type': 'application/sdp'
          }
        }).then(r => r.text())
          .then(answer => {
            peerConnection.setRemoteDescription({
              sdp: answer,
              type: 'answer'
            })
          })
      })
    }
  </script>
</html>