Cach gui signal cuoc goi

send_signal.js

//Gui signal begin call
session.signal({
    type: "begincall",
    to: _stream.connection,
    data: {
      streamId: _selfstream.streamId + "|" + _selfstream.name
    }
  }, function(error) {
    if (error) {
      console.log("signal error: " + error.reason);
    } else {
      console.log("signal sent: begincall:");
    }
  });
  
  // GUi signal accept call
  session.signal({
      type: "acceptcall",
      to: _streams[_streamId].connection,
      data: {
        callaccepted: _selfstream.streamId + "|" + _selfstream.name + "|yes"
      }
    },
    function(error) {
      if (error) {
        console.log("signal error: " + error.reason);
      } else {
        console.log("signal sent");
      }
    }
  );
  
  //GUi signal khi reject call
  session.signal({
      type: "acceptcall",
      to: _streams[_streamId].connection,
      data: {
        callaccepted: _selfstream.streamId + "|" + _selfstream.name + "|no"
      }
    },
    function(error) {
      if (error) {
        console.log("signal error: " + error.reason);
      } else {
        console.log("signal sent");
      }
    }
  );
  
  //Gui signal khi end call
  session.signal({
    type: "endcall",
    to: _stream.connection,
    data: {
      streamId: _selfstream.streamId + "|" + _selfstream.name
    }
  }, function(error) {
    if (error) {
      console.log("signal error: " + error.reason);
    } else {
      console.log("signal sent");
      disconnect();
    }
  });