fix: 修复删除过多东西导致无法读取数据的问题

server/src/UdpServer.cs

@@ -192,6 +192,14 @@ public class UDPServer
         UDPData? data = null;
         var key = $"{ipAddr}-{taskID}";
 
+        var startTime = DateTime.Now;
+        var isTimeout = false;
+        while (!isTimeout)
+        {
+            var elapsed = DateTime.Now - startTime;
+            isTimeout = elapsed >= TimeSpan.FromMilliseconds(timeout);
+            if (isTimeout) break;
+
             try
             {
                 using (await udpDataLock.AcquireWriteLockAsync(TimeSpan.FromMilliseconds(timeout)))
@@ -204,6 +212,14 @@ public class UDPServer
                         sortedList.RemoveAt(0);
                     }
                 }
+            }
+            catch
+            {
+                logger.Trace("Get nothing even after time out");
+                return new(null);
+            }
+        }
+
 
         if (data is null)
         {
@@ -215,12 +231,6 @@ public class UDPServer
             return new(data.DeepClone());
         }
     }
-        catch
-        {
-            logger.Trace("Get nothing even after time out");
-            return new(null);
-        }
-    }
 
     /// <summary>
     /// 异步寻找目标发送的所有内容，并清空队列
@@ -234,6 +244,15 @@ public class UDPServer
         List<UDPData>? data = null;
         var key = $"{ipAddr}-{taskID}";
 
+
+        var startTime = DateTime.Now;
+        var isTimeout = false;
+        while (!isTimeout)
+        {
+            var elapsed = DateTime.Now - startTime;
+            isTimeout = elapsed >= TimeSpan.FromMilliseconds(timeout);
+            if (isTimeout) break;
+
             try
             {
                 using (await udpDataLock.AcquireWriteLockAsync(TimeSpan.FromMilliseconds(timeout)))
@@ -247,6 +266,13 @@ public class UDPServer
                     }
 
                 }
+            }
+            catch
+            {
+                logger.Trace("Get nothing even after time out");
+                return new(null);
+            }
+        }
 
         if (data is null)
         {
@@ -258,13 +284,6 @@ public class UDPServer
             return new(data);
         }
     }
-        catch
-        {
-            logger.Trace("Get nothing even after time out");
-            return new(null);
-        }
-
-    }
 
     /// <summary>
     /// 获取还未被读取的数据列表