Wrap connection timeout property and update documentation for IPv6 preference options

OpenVPN Adapter/OpenVPNConfiguration.h

@@ -12,14 +12,13 @@
 
 /**
  IPv6 preference options
-
- - IPv6PreferenceEnabled: request combined IPv4/IPv6 tunnel
- - IPv6PreferenceDisabled: disable IPv6, so tunnel will be IPv4-only
- - IPv6PreferenceDefault: leave decision to server
  */
 typedef NS_ENUM(NSInteger, IPv6Preference) {
+    /// Request combined IPv4/IPv6 tunnel
     IPv6PreferenceEnabled,
+    /// Disable IPv6, so tunnel will be IPv4-only
     IPv6PreferenceDisabled,
+    /// Leave decision to server
     IPv6PreferenceDefault
 };
 
@@ -60,4 +59,9 @@ typedef NS_ENUM(NSInteger, IPv6Preference) {
  */
 @property (nonatomic) IPv6Preference ipv6;
 
+/**
+ Connection timeout in seconds, or 0 to retry indefinitely
+ */
+@property (nonatomic) NSInteger connectionTimeout;
+
 @end

OpenVPN Adapter/OpenVPNConfiguration.mm

@@ -121,4 +121,12 @@ using namespace openvpn;
     }
 }
 
+- (NSInteger)connectionTimeout {
+    return _config.connTimeout;
+}
+
+- (void)setConnectionTimeout:(NSInteger)connectionTimeout {
+    _config.connTimeout = connectionTimeout;
+}
+
 @end