pnwebrtc/src/main/java/me/kevingleason/pnwebrtc/PnPeerConnectionClient.java
public void closeAllConnections() {
        Iterator<String> peerIds = this.peers.keySet().iterator();
        while (peerIds.hasNext()) {
            closeConnection(peerIds.next());
        }
    }
public void closeAllConnections() {
        Iterator<String> peerIds = this.peers.keySet().iterator();
        while (peerIds.hasNext()) {
            closeConnection(peerIds.next());
        }
    }
Close connections (hangup) on all open connections.