diff --git a/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java b/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
index c4f8578..b275124 100644
--- a/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
+++ b/src/main/java/com/telpo/dipperposition/handler/NettyServerHandler.java
@@ -82,11 +82,13 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
 
 
     /**
-     * 当客户端主动断开服务端的链接后，这个通道就是不活跃的。也就是说客户端与服务端的关闭了通信通道并且不可以传输数据
+     * 当客户端主动断开服务端的链接后，这个通道就是不活跃的。
+     * 也就是说客户端与服务端的关闭了通信通道并且不可以传输数据
      */
     @Override
     public void channelInactive(ChannelHandlerContext ctx) throws Exception {
         log.info("客户端断开链接，IP：{}", ctx.channel().localAddress().toString());
+        ctx.channel().close();
     }
 
     /**
@@ -121,8 +123,12 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
                 buf.writeBytes(returnBytes);
                 buf.writeBytes(getCheckSumBytes(channelAns));
                 buf.writeBytes(getReturnBytes());
-                ctx.write(buf);
-                ctx.flush();
+                // 确保通道处于活跃状态
+                // 不活跃状态继续写会产生CLOSE_WAIT现象
+                if(ctx.channel().isActive()) {
+                    ctx.write(buf);
+                    ctx.flush();
+                }
             }
         }
         // 发送SDBP-AST-POS获取辅助位置信息
@@ -138,9 +144,12 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
                 buf.writeBytes(returnBytes);
                 buf.writeBytes(getCheckSumBytes(channelAns));
                 buf.writeBytes(getReturnBytes());
-
-                ctx.write(buf);
-                ctx.flush();
+                // 确保通道处于活跃状态
+                // 不活跃状态继续写会产生CLOSE_WAIT现象
+                if(ctx.channel().isActive()) {
+                    ctx.write(buf);
+                    ctx.flush();
+                }
             }
         }
 
@@ -154,8 +163,12 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
             buf = bba.buffer(returnBytes.length);
                 //Unpooled.buffer(channelAns.getBytes().length);
             buf.writeBytes(returnBytes);
-            ctx.write(buf);
-            ctx.flush();
+            // 确保通道处于活跃状态
+            // 不活跃状态继续写会产生CLOSE_WAIT现象
+            if(ctx.channel().isActive()) {
+                ctx.write(buf);
+                ctx.flush();
+            }
             //}
         }
 
@@ -171,8 +184,13 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
                 buf.writeBytes(returnBytes);
                 buf.writeBytes(getCheckSumBytes(channelAns));
                 buf.writeBytes(getReturnBytes());
-                ctx.write(buf);
-                ctx.flush();
+
+                // 确保通道处于活跃状态
+                // 不活跃状态继续写会产生CLOSE_WAIT现象
+                if(ctx.channel().isActive()) {
+                    ctx.write(buf);
+                    ctx.flush();
+                }
             }
             channelAns = nettyServerHandler.dipperAstPosAsyncTaskService.pushAstPos(ipAddress);
 
@@ -182,22 +200,30 @@ public class NettyServerHandler extends ChannelInboundHandlerAdapter {
                 buf.writeBytes(returnBytes);
                 buf.writeBytes(getCheckSumBytes(channelAns));
                 buf.writeBytes(getReturnBytes());
-                ctx.write(buf);
-                ctx.flush();
+                // 确保通道处于活跃状态
+                // 不活跃状态继续写会产生CLOSE_WAIT现象
+                if(ctx.channel().isActive()) {
+                    ctx.write(buf);
+                }
             }
+
             byte[] returnBytes = nettyServerHandler.dipperDataAsyncTaskService.getAstEPH();
             //if (channelAns != null) {
-                log.debug("PEH Buffer Length is:" + returnBytes.length);
-                // 使用池化的堆内存，以减少内存碎片
-                //ByteBuf channelPehAnsBuf = Unpooled.buffer(channelAns.getBytes().length);
-                //ByteBuf channelPehAnsBuf = bba.buffer(channelAns.getBytes().length);
-                ByteBuf channelPehAnsBuf = bba.buffer(returnBytes.length);
-                //channelPehAnsBuf.writeBytes(channelAns.getBytes(CharsetUtil.UTF_8));
-                channelPehAnsBuf.writeBytes(returnBytes);
-                // compositeByteBuf.addComponent(channelPehAnsBuf);
-                // log.info("CompositeByteBuf Length is:" + compositeByteBuf.capacity());
+            log.debug("PEH Buffer Length is:" + returnBytes.length);
+            // 使用池化的堆内存，以减少内存碎片
+            //ByteBuf channelPehAnsBuf = Unpooled.buffer(channelAns.getBytes().length);
+            //ByteBuf channelPehAnsBuf = bba.buffer(channelAns.getBytes().length);
+            ByteBuf channelPehAnsBuf = bba.buffer(returnBytes.length);
+            //channelPehAnsBuf.writeBytes(channelAns.getBytes(CharsetUtil.UTF_8));
+            channelPehAnsBuf.writeBytes(returnBytes);
+            // compositeByteBuf.addComponent(channelPehAnsBuf);
+            // log.info("CompositeByteBuf Length is:" + compositeByteBuf.capacity());
+            // 确保通道处于活跃状态
+            // 不活跃状态继续写会产生CLOSE_WAIT现象
+            if(ctx.channel().isActive()) {
                 ctx.write(channelPehAnsBuf);
                 ctx.flush();
+            }
             //}
 
             // 写给下一个Handler，最后一个Handler将内容移出pipeline
diff --git a/src/main/java/com/telpo/dipperposition/server/DipperPositionServer.java b/src/main/java/com/telpo/dipperposition/server/DipperPositionServer.java
index 6d513bb..c8e0f44 100644
--- a/src/main/java/com/telpo/dipperposition/server/DipperPositionServer.java
+++ b/src/main/java/com/telpo/dipperposition/server/DipperPositionServer.java
@@ -52,7 +52,8 @@ public class DipperPositionServer {
                 .option(ChannelOption.SO_BACKLOG, 1024)
                 .option(ChannelOption.CONNECT_TIMEOUT_MILLIS, 3000)
                 // 两小时内没有数据的通信时,TCP会自动发送一个活动探测数据报文
-                .childOption(ChannelOption.SO_KEEPALIVE, true);
+                .childOption(ChannelOption.SO_LINGER, 1000);
+                //.childOption(ChannelOption.SO_KEEPALIVE, true);
 
 
         //绑定端口,开始接收进来的连接
diff --git a/src/main/java/com/telpo/dipperposition/task/ScheduleService.java b/src/main/java/com/telpo/dipperposition/task/ScheduleService.java
index 4a9f49a..34eaddc 100644
--- a/src/main/java/com/telpo/dipperposition/task/ScheduleService.java
+++ b/src/main/java/com/telpo/dipperposition/task/ScheduleService.java
@@ -32,7 +32,7 @@ public class ScheduleService {
     // 获取推送失败的记录
     try {
       // 如果失败，则可以等待10秒再获取1次。
-      int tryTimes = 2;
+      int tryTimes = 59;
       dipperDataAsyncTaskService.pullAstEPH(tryTimes);
     } catch (InterruptedException e) {
       log.error("获取星历数据重试睡眠发生异常:", e);