diff --git a/proxy-server/src/main/java/org/fengfei/lanproxy/server/config/web/HttpRequestHandler.java b/proxy-server/src/main/java/org/fengfei/lanproxy/server/config/web/HttpRequestHandler.java
index e2b733b..980f6b0 100644
--- a/proxy-server/src/main/java/org/fengfei/lanproxy/server/config/web/HttpRequestHandler.java
+++ b/proxy-server/src/main/java/org/fengfei/lanproxy/server/config/web/HttpRequestHandler.java
@@ -5,6 +5,7 @@ import java.io.RandomAccessFile;
 import java.net.URI;
 import java.nio.charset.Charset;
 
+import io.netty.handler.codec.http.*;
 import org.fengfei.lanproxy.common.JsonUtil;
 
 import io.netty.buffer.Unpooled;
@@ -13,17 +14,6 @@ import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.DefaultFileRegion;
 import io.netty.channel.SimpleChannelInboundHandler;
-import io.netty.handler.codec.http.DefaultFullHttpResponse;
-import io.netty.handler.codec.http.DefaultHttpResponse;
-import io.netty.handler.codec.http.FullHttpRequest;
-import io.netty.handler.codec.http.FullHttpResponse;
-import io.netty.handler.codec.http.HttpHeaders;
-import io.netty.handler.codec.http.HttpHeaders.Names;
-import io.netty.handler.codec.http.HttpMethod;
-import io.netty.handler.codec.http.HttpResponse;
-import io.netty.handler.codec.http.HttpResponseStatus;
-import io.netty.handler.codec.http.HttpVersion;
-import io.netty.handler.codec.http.LastHttpContent;
 import io.netty.handler.ssl.SslHandler;
 import io.netty.handler.stream.ChunkedNioFile;
 
@@ -60,11 +50,11 @@ public class HttpRequestHandler extends SimpleChannelInboundHandler<FullHttpRequ
 
         FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(code),
                 Unpooled.wrappedBuffer(content.getBytes(Charset.forName("UTF-8"))));
-        response.headers().set(Names.CONTENT_TYPE, mimeType);
-        response.headers().set(Names.CONTENT_LENGTH, response.content().readableBytes());
-        response.headers().set(Names.SERVER, SERVER_VS);
+        response.headers().set(HttpHeaderNames.CONTENT_TYPE, mimeType);
+        response.headers().set(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes());
+        response.headers().set(HttpHeaderNames.SERVER, SERVER_VS);
         ChannelFuture future = ctx.writeAndFlush(response);
-        if (!HttpHeaders.isKeepAlive(request)) {
+        if (!HttpUtil.isKeepAlive(request)) {
             future.addListener(ChannelFutureListener.CLOSE);
         }
 
@@ -79,7 +69,7 @@ public class HttpRequestHandler extends SimpleChannelInboundHandler<FullHttpRequ
      */
     private void outputPages(ChannelHandlerContext ctx, FullHttpRequest request) throws Exception {
         HttpResponseStatus status = HttpResponseStatus.OK;
-        URI uri = new URI(request.getUri());
+        URI uri = new URI(request.uri());
         String uriPath = uri.getPath();
         uriPath =  HTTP_SYMBOL.equals(uriPath)? "/index.html" : uriPath;
         String path = PAGE_FOLDER + uriPath;
@@ -95,7 +85,7 @@ public class HttpRequestHandler extends SimpleChannelInboundHandler<FullHttpRequ
             return;
         }
 
-        if (HttpHeaders.is100ContinueExpected(request)) {
+        if (HttpUtil.is100ContinueExpected(request)) {
             send100Continue(ctx);
         }
 
@@ -111,15 +101,15 @@ public class HttpRequestHandler extends SimpleChannelInboundHandler<FullHttpRequ
             }
         }
 
-        HttpResponse response = new DefaultHttpResponse(request.getProtocolVersion(), status);
-        response.headers().set(HttpHeaders.Names.CONTENT_TYPE, mimeType);
+        HttpResponse response = new DefaultHttpResponse(request.protocolVersion(), status);
+        response.headers().set(HttpHeaderNames.CONTENT_TYPE, mimeType);
         boolean keepAlive = HttpHeaders.isKeepAlive(request);
         if (keepAlive) {
-            response.headers().set(HttpHeaders.Names.CONTENT_LENGTH, length);
-            response.headers().set(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.KEEP_ALIVE);
+            response.headers().set(HttpHeaderNames.CONTENT_LENGTH, length);
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
         }
 
-        response.headers().set(Names.SERVER, SERVER_VS);
+        response.headers().set(HttpHeaderNames.SERVER, SERVER_VS);
         ctx.write(response);
 
         if (ctx.pipeline().get(SslHandler.class) == null) {