fix: harden OpenSim session readiness

crates/libremetaverse/src/grid_manager.rs

@@ -20,7 +20,7 @@ use futures_util::future::{Either, select};
 use futures_util::pin_mut;
 use libremetaverse_structured_data::{OSD, OSDFormat, OSDMap, OSDParser};
 use libremetaverse_types::compat::{CancellationToken, EventHandler, Subscription, Uri};
-use libremetaverse_types::{UUID, Vector3};
+use libremetaverse_types::{UUID, Utils, Vector3};
 use std::collections::HashMap;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::{Arc, Mutex, RwLock};
@@ -570,7 +570,7 @@ impl GridManager {
         p.agent_data.agent_id = agent;
         p.agent_data.session_id = session;
         p.agent_data.flags = layer as u32;
-        p.name_data.name = name.as_bytes().to_vec();
+        p.name_data.name = Utils::string_to_bytes(name.to_owned())?;
         self.send(&p, PacketType::MapNameRequest)
     }
     pub fn request_map_items(
@@ -660,6 +660,25 @@ impl GridManager {
         if let Some(region) = self.inner.region_by_name(&key) {
             return Ok(Some(Some(region)));
         }
+        if let Some(simulator) = self
+            .inner
+            .client
+            .network()
+            .current_sim()
+            .filter(|simulator| simulator.name.eq_ignore_ascii_case(&key))
+        {
+            return Ok(Some(Some(GridRegion {
+                access: simulator.access,
+                agents: 0,
+                map_image_id: UUID::zero(),
+                name: simulator.name.clone(),
+                region_flags: simulator.flags,
+                region_handle: simulator.handle,
+                water_height: simulator.water_height.clamp(0.0, f32::from(u8::MAX)) as u8,
+                x: ((simulator.handle >> 32) / 256) as i32,
+                y: ((simulator.handle & u64::from(u32::MAX)) / 256) as i32,
+            })));
+        }
         let notified = self.inner.notify.notified();
         self.request_map_region(name, layer)?;
         if let Some(region) = self.inner.region_by_name(&key) {