Ios GCKMediaControlChannel错误处理

在50%的情况下，当尝试在chromecast设备上流式传输音频/视频时，我会得到

mediaControlChannel:requestDidFailWithID:error:

方法调用了大约100次，然后才真正开始流式传输

Error Domain=com.google.GCKError Code=4 "The operation couldn’t be completed. (com.google.GCKError error 4.)

（事实上，我在电视上看到“蓝色进度线”的时候，似乎一直在客户端收到此错误的回调）

在这种情况下，我们应该怎么做？通常，当您收到错误通知时，您应该处理它（即让用户知道某个错误失败），并且由您决定是否重试，但看起来chrome cast会为您决定并自动重试，直到成功。那么，对iOS客户端的期望是什么呢？我们应该忽略这些电话吗

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更新：错误代码似乎在变化（我也得到了

1

，

93

），但对于一个媒体项目，它们总是相同的。有人知道在哪里查找错误代码吗？没有这方面的任何信息。

这里有一些说明：

您提到的错误代码4似乎表示发出了无效的请求

如果您正在为iOS编程，在GCKError.h文件中，我发现还有一些额外的错误代码：

  typedef NS_ENUM(NSInteger, GCKErrorCode) {

  /**
   * Error code indicating a network I/O error.
   */
  GCKErrorCodeNetworkError = 1,

  /**
   * Error code indicating that an operation has timed out.
   */
  GCKErrorCodeTimeout = 2,

  /**
   * Error code indicating an authentication error.
   */
  GCKErrorCodeDeviceAuthenticationFailure = 3,

  /**
   * Error code indicating that an invalid request was made.
   */
  GCKErrorCodeInvalidRequest = 4,

  /**
   * Error code indicating that an in-progress request has been cancelled, most likely because
   * another action has preempted it.
   */
  GCKErrorCodeCancelled = 5,

  /**
   * Error code indicating that the request was disallowed and could not be completed.
   */
  GCKErrorCodeNotAllowed = 6,

  /**
   * Error code indicating that a requested application could not be found.
   */
  GCKErrorCodeApplicationNotFound = 7,

  /**
   * Error code indicating that a requested application is not currently running.
   */
  GCKErrorCodeApplicationNotRunning = 8,

  /**
   * Error code indicating the app entered the background.
   */
  GCKErrorCodeAppDidEnterBackground = 91,

  /**
   * Error code indicating a disconnection occurred during the request.
   */
  GCKErrorCodeDisconnected = 92,

  /**
   * Error code indicating that a request could not be made because the same type of request is
   * still in process.
   */
  GCKErrorCodeDuplicateRequest = 93,

  /**
   * Error code indicating that a media load failed on the receiver side.
   */
  GCKErrorCodeMediaLoadFailed = 94,

  /**
   * Error code indicating that a media media command failed because of the media player state.
   */
  GCKErrorCodeInvalidMediaPlayerState = 95,

  /**
   * Error code indicating that the application session ID was not valid.
   */
  GCKErrorCodeInvalidApplicationSessionID = 96,

  /**
   * Error code indicating that an unknown, unexpected error has occurred.
   */
  GCKErrorCodeUnknown = 99,
};