ios – 如何正确关闭对等连接

我有一个使用webrtc的voip应用程序.我最近重新设计了许多代码,使信令更加一致.我现在唯一的大问题是,当我关闭对等连接时,应用程序崩溃了一些内部opengl代码.我使用此代码关闭连接：

[peerConnection removeStream:lms];
[peerConnection close];
peerConnection = nil;

我之前使用的代码几乎删除了与webrtc相关的任何内容,但我发现很多对象都可以重用,只需要在应用程序开始时进行.我该怎么做才能确保应用程序不会崩溃我结束通话的所有内容？

>我正在使用修订版6825
>我正在使用xcode 5.1.1
>在第4代iPad上测试,运行iOS7

编辑：
我将上面的代码移动到后台线程,它不再崩溃.但现在,经过几次通话后,我的日志会被以下行发送垃圾邮件(大约每秒3或4次)：

Failed to make complete framebuffer object 8cdd

发生这种情况时,这是日志历史记录的最后一部分：

2014-10-14 11:53:45.045 BeeldZorgApp[4912:3903] peerConnection iceConnectionChanged:(RTCICEConnectionState)2
2014-10-14 11:53:45.046 BeeldZorgApp[4912:3903] peerConnection iceConnectionChanged:(RTCICEConnectionState)3
2014-10-14 11:53:50.732 BeeldZorgApp[4912:3903] peerConnectionOnRenegotiationNeeded:(RTCPeerConnection *)<RTCPeerConnection: 0x157c9640>
2014-10-14 11:53:50.742 BeeldZorgApp[4912:3903] peerConnection iceConnectionChanged:(RTCICEConnectionState)6
2014-10-14 11:53:50.743 BeeldZorgApp[4912:3903] peerConnection signalingStateChanged:(RTCSignalingState)5
2014-10-14 11:53:59.955 BeeldZorgApp[4912:3903] peerConnectionOnRenegotiationNeeded:(RTCPeerConnection *)<RTCPeerConnection: 0x19a62e30>
2014-10-14 11:53:59.980 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.028 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.091 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.119 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.152 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.185 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.218 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.252 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.284 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.319 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.352 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.384 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.417 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.451 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.486 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.518 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd
2014-10-14 11:54:00.552 BeeldZorgApp[4912:60b] Failed to make complete framebuffer object 8cdd

事实证明,在远离视图控制器之前,需要从超级视图中删除RTCEAGLVideoView.我现在使用以下代码进行清理：

//these are both RTCEAGLVideoViews
[remoteVideoView removeFromSuperview];
[localVideoView removeFromSuperview];
[peerConnection removeStream:lms];
[peerConnection close];
peerConnection = nil;