force client to use auth v1

common/client-core/surb-storage/src/backend/fs_backend/mod.rs

@@ -120,6 +120,13 @@ impl Backend {
             manager.delete_all_tags().await?;
         }
 
+        // We ran into a bug where the client was re-using the same sender tag while connected to
+        // different gateways. This does not work since changing the gateway changes the
+        // nym-addres.
+        // A stop-gap solution is to always purge the tags when the client is started.
+        // When writing this I'm not yet sure what the correct solution is.
+        manager.delete_all_tags().await?;
+
         Ok(Backend {
             temporary_old_path: None,
             database_path: owned_path,

common/client-libs/gateway-client/src/client/mod.rs

@@ -683,7 +683,7 @@ impl<C, St> GatewayClient<C, St> {
         }
 
         if self.shared_key.is_some() {
-            self.authenticate(supports_auth_v2).await?;
+            self.authenticate(false).await?;
 
             if self.authenticated {
                 // if we are authenticated it means we MUST have an associated shared_key
@@ -1016,8 +1016,7 @@ impl<C, St> GatewayClient<C, St> {
         }
 
         // if we're reconnecting, because we lost connection, we need to re-authenticate the connection
-        self.authenticate(self.negotiated_protocol.supports_authenticate_v2())
-            .await?;
+        self.authenticate(false).await?;
 
         // this call is NON-blocking
         self.start_listening_for_mixnet_messages()?;