使用 iOS 9 我在 iPhone 控制台中看到奇怪的日志
当应用程序连接到远程服务时会出现这些日志,也许当连接速度很慢时,我使用 NSURLSession。 有人知道这个日志的含义,我应该关心这个吗:
-[NETAWDManager reportStats:metricID:] server 0x13cd19d70, container 0x13ce9dfe0, metrid 2686983, successfully reported:
<AWDLibnetcoreTCPConnectionReport: 0x13ce7af10> {
cellularFallbackReport = {
dataUsageSnapshotsAtNetworkEvents = (
{
bytesIn = 0;
bytesOut = 410;
}
);
"fallbackTimer_msecs" = 0;
fellback = 0;
networkEvents = (
"NETWORK_EVENT_DATA_STALL_AT_APP_LAYER"
);
"timeToNetworkEvents_msecs" = (
3325
);
};
clientIdentifier = "com.mydomain.myapp";
connectionStatisticsReport = {
DNSAnswersCached = 1;
"DNSResolvedTime_msecs" = 3;
RTTvariance = 169;
"appDataStallTimer_msecs" = 3;
appReportingDataStallCount = 1;
"bestRTT_msecs" = 359;
betterRouteEventCount = 0;
bytesDuplicate = 0;
bytesIn = 37000;
bytesOut = 410;
bytesOutOfOrder = 0;
bytesRetransmitted = 0;
cellularFallback = 0;
cellularRRCConnected = 0;
connected = 1;
connectedInterfaceType = "INTERFACE_TYPE_WIFI";
"connectionEstablishmentTime_msecs" = 308;
connectionReuseCount = 0;
"currentRTT_msecs" = 79;
"flowDuration_msecs" = 30750;
interfaceType = "INTERFACE_TYPE_WIFI";
kernelReportedStalls = 0;
kernelReportingConnectionStalled = 0;
kernelReportingReadStalled = 0;
kernelReportingWriteStalled = 0;
packetsDuplicate = 0;
packetsIn = 26;
packetsOut = 1;
packetsOutOfOrder = 0;
packetsRetransmitted = 0;
"smoothedRTT_msecs" = 275;
synRetransmissionCount = 0;
tcpFastOpen = 0;
"timeToConnectionEstablishment_msecs" = 315;
"timeToConnectionStart_msecs" = 7;
"timeToDNSResolved_msecs" = 7;
"timeToDNSStart_msecs" = 4;
trafficClass = 0;
};
delegated = 0;
reportReason = "REPORT_REASON_DATA_STALL_AT_APP_LAYER";
}
最佳答案
根据标识符cellularFallbackReport
,这条消息可能与WiFi Assist相关.这是 iOS 9 中的一项新功能,可检测慢速 WiFi 连接并自动回退到手机的蜂窝 radio 。
这与您的观察结果一致,即当您的连接速度较慢时会出现日志消息。
如果您能够可靠地重现消息,请尝试在设置中禁用 WiFi Assist 并查看它是否消失:
如果真的是这样,你应该关心它吗?可能不是。这些消息表明 iOS 系统正在代表您的应用程序自动处理网络问题,您对此无能为力。
关于iOS 奇怪日志 NETAWDManager,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33278333/