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-rw-r--r--WireGuard/WireGuardNetworkExtension/PacketTunnelProvider.swift2
1 files changed, 1 insertions, 1 deletions
diff --git a/WireGuard/WireGuardNetworkExtension/PacketTunnelProvider.swift b/WireGuard/WireGuardNetworkExtension/PacketTunnelProvider.swift
index fd6bb9b..e44d298 100644
--- a/WireGuard/WireGuardNetworkExtension/PacketTunnelProvider.swift
+++ b/WireGuard/WireGuardNetworkExtension/PacketTunnelProvider.swift
@@ -38,7 +38,7 @@ class PacketTunnelProvider: NEPacketTunnelProvider {
packetTunnelSettingsGenerator = PacketTunnelSettingsGenerator(tunnelConfiguration: tunnelConfiguration, resolvedEndpoints: resolvedEndpoints)
- let fileDescriptor = packetFlow.value(forKeyPath: "socket.fileDescriptor") as! Int32 //swiftlint:disable:this force_cast
+ let fileDescriptor = (packetFlow.value(forKeyPath: "socket.fileDescriptor") as? Int32) ?? -1
if fileDescriptor < 0 {
wg_log(.error, staticMessage: "Starting tunnel failed: Could not determine file descriptor")
errorNotifier.notify(PacketTunnelProviderError.couldNotDetermineFileDescriptor)