iOS 模拟器运行不能联网 PAC Fetch failed with error

app在模拟器是哪个启动成功会自动连接服务器，然后Xcode控制台报错，

模拟器 PAC Fetch failed with error [NSURLErrorDomain:-1001]

这类问题有好多类似的错误代码，看英文可以大概知道他的意思，-1001 代码是超时之类的错误。PAC 是 (代理自动配置)，然后我们可以在系统偏好设置->网络->高级->代理 发现有代理错误。可以发现如果有比较诡异的代理，需要手动清除，或者是你开了科学上网自动代理的工具。请先退出这些软件，然后再用模拟器打开app,可以正常联网了。PAC错误的日志可能还在。不过-1001错误消失了。
 

kCFURLErrorUnknown = -998,

kCFURLErrorCancelled = -999,

kCFURLErrorBadURL = -1000,

kCFURLErrorTimedOut = -1001,

kCFURLErrorUnsupportedURL = -1002,

kCFURLErrorCannotFindHost = -1003,

kCFURLErrorCannotConnectToHost = -1004,

kCFURLErrorNetworkConnectionLost = -1005,

kCFURLErrorDNSLookupFailed = -1006,

kCFURLErrorHTTPTooManyRedirects = -1007,

kCFURLErrorResourceUnavailable = -1008,

kCFURLErrorNotConnectedToInternet = -1009,

kCFURLErrorRedirectToNonExistentLocation = -1010,

kCFURLErrorBadServerResponse = -1011,

kCFURLErrorUserCancelledAuthentication = -1012,

kCFURLErrorUserAuthenticationRequired = -1013,

kCFURLErrorZeroByteResource = -1014,

kCFURLErrorCannotDecodeRawData = -1015,

kCFURLErrorCannotDecodeContentData = -1016,

kCFURLErrorCannotParseResponse = -1017,

kCFURLErrorInternationalRoamingOff = -1018,

kCFURLErrorCallIsActive = -1019,

kCFURLErrorDataNotAllowed = -1020,

kCFURLErrorRequestBodyStreamExhausted = -1021,

kCFURLErrorFileDoesNotExist = -1100,

kCFURLErrorFileIsDirectory = -1101,

kCFURLErrorNoPermissionsToReadFile = -1102,

kCFURLErrorDataLengthExceedsMaximum = -1103,