ios - 如何正确关闭对等连接

Question

我有一个使用 webrtc 的 voip 应用程序。我最近重新设计了很多代码，使信号更加一致。我现在唯一的大问题是，当我关闭对等连接时，应用程序会因某些内部 opengl 代码而崩溃。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 相关的所有内容，但我发现很多对象可以重复使用，只需在应用程序启动时初始化。我必须怎么做才能确保应用程序不会在我结束通话时崩溃？

• 我使用的是修订版 6825
• 我正在使用 xcode 5.1.1
• 在运行 iOS7 的第四代 iPad 上进行测试

编辑:
我将上面的代码移到了后台线程，它不再崩溃了。但是现在，在几次调用之后，我的日志中出现了以下行(大约每秒 3 或 4 次):

Failed to make complete framebuffer object 8cdd

这是发生这种情况时日志历史的最后一部分:

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

Answer 1

事实证明，RTCEAGLVideoViews 需要在离开 View Controller 之前从它们的 super View 中删除。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;