After closing RTCPeerConnection I cannot make call again because onicecandidate is not fired

[ibrahim saleh]

I want to make a peer to peer connection using webrtc. it's working fine when I create RTCPeerConnection for the first time but when I close the connection using close() method and try to call again by creating new RTCPeerConnection , call is not established because onicecandidate event is not fired so ice candidates cannot be sent to the signaler. 

[ibrahim saleh]

Can any body help please