Implement native login and session initialization (#56)

crates/libremetaverse/src/client_core.rs

@@ -116,6 +116,7 @@ struct ClientRuntime {
     agent_throttle_sender: Mutex<Option<Arc<dyn crate::udp_transport::AgentThrottleSender>>>,
     http_caps_client: Mutex<crate::caps_http::HttpCapsClient>,
     caps_rate_limiter: Mutex<crate::caps_http::CapsRateLimiter>,
+    network_manager: Mutex<std::sync::Weak<crate::network_manager::NetworkManagerInner>>,
     shutdown_complete: Condvar,
     shutdown_wait: Mutex<()>,
 }
@@ -142,6 +143,7 @@ impl ClientRuntime {
             agent_throttle_sender: Mutex::new(None),
             http_caps_client: Mutex::new(http_caps_client),
             caps_rate_limiter: Mutex::new(caps_rate_limiter),
+            network_manager: Mutex::new(std::sync::Weak::new()),
             shutdown_complete: Condvar::new(),
             shutdown_wait: Mutex::new(()),
         }
@@ -350,6 +352,31 @@ impl GridClient {
             .clone()
     }
 
+    pub(crate) fn native_network(&self) -> Result<crate::NetworkManager, crate::Error> {
+        let mut cached = self
+            .runtime
+            .network_manager
+            .lock()
+            .unwrap_or_else(std::sync::PoisonError::into_inner);
+        if let Some(inner) = cached.upgrade() {
+            return Ok(crate::network_manager::NetworkManager::native_from_inner(
+                inner,
+            ));
+        }
+        let manager = crate::network_manager::NetworkManager::native_new(self.clone())?;
+        *cached = manager.native_inner_weak();
+        Ok(manager)
+    }
+
+    #[allow(clippy::needless_pass_by_value)] // The mapped C# property setter owns its value.
+    pub(crate) fn native_set_network(&self, value: crate::NetworkManager) {
+        *self
+            .runtime
+            .network_manager
+            .lock()
+            .unwrap_or_else(std::sync::PoisonError::into_inner) = value.native_inner_weak();
+    }
+
     pub(crate) fn native_set_caps_rate_limiter(
         &mut self,
         value: crate::caps_http::CapsRateLimiter,