introduce websocket reconnect strategy

protobuf/video/sfu/event/events.proto

@@ -84,6 +84,8 @@ message PinsChanged {
 
 message Error {
   models.Error error = 4;
+  // returns the reconnect strategy to be used by the client
+  models.WebsocketReconnectStrategy reconnect_strategy = 5;
 }
 
 message ICETrickle {

protobuf/video/sfu/models/models.proto

@@ -267,4 +267,20 @@ enum CallEndedReason {
   CALL_ENDED_REASON_ENDED = 1;
   CALL_ENDED_REASON_LIVE_ENDED = 2;
   CALL_ENDED_REASON_KICKED = 3;
-}
+}
+
+// WebsocketReconnectStrategy defines the ws strategies available for handling reconnections.
+enum WebsocketReconnectStrategy {
+  WEBSOCKET_RECONNECT_STRATEGY_UNSPECIFIED = 0;
+  // Sent after reaching the maximum reconnection attempts, leading to a disconnection.
+  WEBSOCKET_RECONNECT_STRATEGY_DISCONNECT = 1;
+  // SDK should maintaining existing publisher/subscriber pc instances
+  // and establish a new WebSocket connection.
+  WEBSOCKET_RECONNECT_STRATEGY_FAST = 2;
+  // SDK should drop existing pc instances and creates a fresh WebSocket connection,
+  // ensuring a clean state for the reconnection.
+  WEBSOCKET_RECONNECT_STRATEGY_CLEAN = 3;
+  // SDK should obtain new credentials from the coordinator, drops existing pc instances, and initializes
+  // a completely new WebSocket connection, ensuring a comprehensive reset.
+  WEBSOCKET_RECONNECT_STRATEGY_FULL = 4;
+};