我在连接到 VPN 服务器时仅第一次收到“Error Domain=NEVPNErrorDomain Code=1 \"(null)\"”,之后就可以正常工作了。
我查过尝试启动 TunnelProvider 网络扩展时出现 NEVPNErrorDomain 错误 1 https://stackoverflow.com/questions/35325487/nevpnerrordomain-error-1-when-trying-to-start-tunnelprovider-network-extension与我的问题类似,并按照此解决方案中所述的方式进行操作,但仍然遇到相同的错误。
这是我使用网络扩展连接到 VPN 服务器的代码。
func initVPNTunnelProviderManager(){
self.vpnManager.loadFromPreferences { (error) -> Void in
if((error) != nil) {
print("VPN Preferences error: 1")
}
else {
let p = NEVPNProtocolIKEv2()
p.username = "******"
p.remoteIdentifier = "*****"
p.serverAddress = "******"
let keychain = KeychainSwift()
let data = keychain.getData("vpnPassword")
p.passwordReference = data
p.authenticationMethod = NEVPNIKEAuthenticationMethod.none
p.useExtendedAuthentication = true
p.disconnectOnSleep = false
self.vpnManager.protocolConfiguration = p
self.vpnManager.isEnabled = true
self.vpnManager.saveToPreferences(completionHandler: { (error) -> Void in
if((error) != nil) {
print("VPN Preferences error: 2")
}
else {
var startError: NSError?
do {
try self.vpnManager.connection.startVPNTunnel()
}
catch let error as NSError {
startError = error
print(startError)
}
catch {
print("Fatal Error")
fatalError()
}
if((startError) != nil) {
**// Here it comes first time later onwards it goes to else block. (Which I'm expecting first time too)
print("VPN Preferences error: 3")**
let alertController = UIAlertController(title: "Oops..", message:
"Something went wrong while connecting to the VPN. Please try again.", preferredStyle: UIAlertControllerStyle.alert)
alertController.addAction(UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.default,handler: nil))
self.present(alertController, animated: true, completion: nil)
print(startError)
}
else {
print("Start VPN")
}
}
})
}
}
}
有人可以帮助我为什么这是第一次进去吗?
if((startError) != nil) {
// Here is control coming for first time
}
else {
// Which should always come here //later onwards its coming here, not first time.
}
注意:我找到了相关帖子在 GitHub 上 https://github.com/iCepa/iCepa/issues/9但如果我尝试这个解决方案,它会给出Optional(Error Domain=NEVPNErrorDomain Code=4 "(null)") 问题,因为配置已过时,需要加载。您应该调用 loadFromPreferencesWithCompletionHandler: 并在完成处理程序中修改要修改的值,然后调用 saveToPreferencesWithCompletionHandler:。
提前致谢。
解决方案是:
Calling 从首选项加载之后再次保存到首选项加载完成后启动连接将解决该问题。这听起来很愚蠢。
self.vpnManager.saveToPreferences(completionHandler: { (error) -> Void in
if ((error) != nil) {
print("VPN Preferences error: 2")
}
else {
self.vpnManager.loadFromPreferences(completionHandler: { (error) in
if ((error) != nil) {
print("VPN Preferences error: 2")
}
else {
var startError: NSError?
do {
try self.vpnManager.connection.startVPNTunnel()
}
catch let error as NSError {
startError = error
print(startError)
}
catch {
print("Fatal Error")
fatalError()
}
if ((startError) != nil) {
print("VPN Preferences error: 3")
let alertController = UIAlertController( title: "Oops..", message: "Something went wrong while connecting to the VPN. Please try again.", preferredStyle: UIAlertControllerStyle.alert)
alertController.addAction( UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.default,handler: nil))
self.present(alertController, animated: true, completion: nil)
print(startError)
}
else {
self.VPNStatusDidChange(nil)
print("Start VPN")
}
}
})
}
})
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