Revert "Backport guts of 1.8 to 1.6 tree so we can point release without waiting for UI quirks to be fixed."

This reverts commit 48ce7632fa.

include/ZeroTierOne.h

@@ -420,6 +420,157 @@ enum ZT_ResultCode
  */
 #define ZT_ResultCode_isFatal(x) ((((int)(x)) >= 100)&&(((int)(x)) < 1000))
 
+
+/**
+ *  Multipath bonding policy
+ */
+enum ZT_MultipathBondingPolicy
+{
+	/**
+	 * Normal operation. No fault tolerance, no load balancing
+	 */
+	ZT_BONDING_POLICY_NONE = 0,
+
+	/**
+	 * Sends traffic out on only one path at a time. Configurable immediate
+	 * fail-over.
+	 */
+	ZT_BONDING_POLICY_ACTIVE_BACKUP = 1,
+
+	/**
+	 * Sends traffic out on all paths
+	 */
+	ZT_BONDING_POLICY_BROADCAST = 2,
+
+	/**
+	 * Stripes packets across all paths
+	 */
+	ZT_BONDING_POLICY_BALANCE_RR = 3,
+
+	/**
+	 * Packets destined for specific peers will always be sent over the same
+	 * path.
+	 */
+	ZT_BONDING_POLICY_BALANCE_XOR = 4,
+
+	/**
+	 * Balances flows among all paths according to path performance
+	 */
+	ZT_BONDING_POLICY_BALANCE_AWARE = 5
+};
+
+/**
+ * Multipath active re-selection policy (linkSelectMethod)
+ */
+enum ZT_MultipathLinkSelectMethod
+{
+	/**
+	 * Primary link regains status as active link whenever it comes back up
+	 * (default when links are explicitly specified)
+	 */
+	ZT_MULTIPATH_RESELECTION_POLICY_ALWAYS = 0,
+
+	/**
+	 * Primary link regains status as active link when it comes back up and
+	 * (if) it is better than the currently-active link.
+	 */
+	ZT_MULTIPATH_RESELECTION_POLICY_BETTER = 1,
+
+	/**
+	 * Primary link regains status as active link only if the currently-active
+	 * link fails.
+	 */
+	ZT_MULTIPATH_RESELECTION_POLICY_FAILURE = 2,
+
+	/**
+	 * The primary link can change if a superior path is detected.
+	 * (default if user provides no fail-over guidance)
+	 */
+	ZT_MULTIPATH_RESELECTION_POLICY_OPTIMIZE = 3
+};
+
+/**
+ * Mode of multipath link interface
+ */
+enum ZT_MultipathLinkMode
+{
+	ZT_MULTIPATH_SLAVE_MODE_PRIMARY = 0,
+	ZT_MULTIPATH_SLAVE_MODE_SPARE = 1
+};
+
+/**
+ * Strategy for path monitoring
+ */
+enum ZT_MultipathMonitorStrategy
+{
+	/**
+	 * Use bonding policy's default strategy
+	 */
+	ZT_MULTIPATH_SLAVE_MONITOR_STRATEGY_DEFAULT = 0,
+
+	/**
+	 * Does not actively send probes to judge aliveness, will rely
+	 * on conventional traffic and summary statistics.
+	 */
+	ZT_MULTIPATH_SLAVE_MONITOR_STRATEGY_PASSIVE = 1,
+
+	/**
+	 * Sends probes at a constant rate to judge aliveness.
+	 */
+	ZT_MULTIPATH_SLAVE_MONITOR_STRATEGY_ACTIVE = 2,
+
+	/**
+	 * Sends probes at varying rates which correlate to native
+	 * traffic loads to judge aliveness.
+	 */
+	ZT_MULTIPATH_SLAVE_MONITOR_STRATEGY_DYNAMIC = 3
+};
+
+/**
+ * Strategy for re-balancing protocol flows
+ */
+enum ZT_MultipathFlowRebalanceStrategy
+{
+	/**
+	 * Flows will only be re-balanced among links during
+	 * assignment or failover. This minimizes the possibility
+	 * of sequence reordering and is thus the default setting.
+	 */
+	ZT_MULTIPATH_FLOW_REBALANCE_STRATEGY_PASSIVE = 0,
+
+	/**
+	 * Flows that are active may be re-assigned to a new more
+	 * suitable link if it can be done without disrupting the flow.
+	 * This setting can sometimes cause sequence re-ordering.
+	 */
+	ZT_MULTIPATH_FLOW_REBALANCE_STRATEGY_OPPORTUNISTIC = 0,
+
+	/**
+	 * Flows will be continuously re-assigned the most suitable link
+	 * in order to maximize "balance". This can often cause sequence
+	 * reordering and is thus only reccomended for protocols like UDP.
+	 */
+	ZT_MULTIPATH_FLOW_REBALANCE_STRATEGY_AGGRESSIVE = 2
+};
+
+/**
+ * Indices for the path quality weight vector
+ */
+enum ZT_MultipathQualityWeightIndex
+{
+	ZT_QOS_LAT_IDX,
+	ZT_QOS_LTM_IDX,
+	ZT_QOS_PDV_IDX,
+	ZT_QOS_PLR_IDX,
+	ZT_QOS_PER_IDX,
+	ZT_QOS_THR_IDX,
+	ZT_QOS_THM_IDX,
+	ZT_QOS_THV_IDX,
+	ZT_QOS_AGE_IDX,
+	ZT_QOS_SCP_IDX,
+	ZT_QOS_WEIGHT_SIZE
+};
+
 /**
  * Status codes sent to status update callback when things happen
  */
@@ -669,12 +820,7 @@ enum ZT_VirtualNetworkStatus
 	/**
 	 * ZeroTier core version too old
 	 */
-	ZT_NETWORK_STATUS_CLIENT_TOO_OLD = 5,
-
-	/**
-	 * External authentication is required (e.g. SSO)
-	 */
-	ZT_NETWORK_STATUS_AUTHENTICATION_REQUIRED = 6
+	ZT_NETWORK_STATUS_CLIENT_TOO_OLD = 5
 };
 
 /**
@@ -1193,21 +1339,6 @@ typedef struct
 	 * Network specific DNS configuration
 	 */
 	ZT_VirtualNetworkDNS dns;
-
-	/**
-	 * sso enabled
-	 */
-	bool ssoEnabled;
-
-	/**
-	 * If the status us AUTHENTICATION_REQUIRED, this may contain a URL for authentication.
-	 */
-	char authenticationURL[2048];
-
-	/**
-	 * Time that current authentication expires. only valid if ssoEnabled is true
-	 */
-	uint64_t authenticationExpiryTime;
 } ZT_VirtualNetworkConfig;
 
 /**