致谢

感谢作者提供了一个很好的学习 netty socks5 的项目。

之前一直想写一个代理，以了解http原理，最终目的是达到大陆到国外的不可描述的目的。作者的项目是很好的sslocal-加密 的项目。

问题描述

拿到这个项目，看了很久之后感觉作者写的很完善，没什么好自己动手修改的地方。

然后就看作者的具体实现。用jdk9带的 java misson control 工具查看了一下项目的内存情况。发现当长时间运行，产生多个与远端的连接时，程序占用的内存非常大，而且使用jmc的full gc工具也无法进行垃圾回收。具体情况可以见附图。

看jmc中的线程信息时，发现：出现了350多个类nioEventLoopGroup-350-1的runnable的线程。

结合学习的netty知识判断和对您源码的阅读，判断是在Socks5CommandRequestHandler.channelRead0()方法中的EventLoopGroup bossGroup=new NioEventLoopGroup();语句导致的。这句话导致——每次需要代理新建到远程服务器的连接时，都创建了一个NioEventLoopGroup。而且经过上面fullGC的测试，这些NioEventLoopGroup还不能被回收。

问题解决

netty实战告诉我，服务器端有两个NioEventLoopGroup，客户端有一个NioEventLoopGroup。

所以我设想，只使用一个NioEventLoopGroup固定的处理所有对远程的channel。

我做出了如下修改
在Socks5CommandRequestHandler中增加：

    private EventLoopGroup bossGroup;
    public Socks5CommandRequestHandler(ProxyServer proxyServer) {
        bossGroup=proxyServer.getBossGroup();
    }

即在ProxyServer中创建一个单独的NioEventLoopGroup，在Socks5CommandRequestHandler，导入这个NioEventLoopGroup,用以管理与远程的连接。

效果

在JMC的线程页面中显示只有3个NioEventLoopGroup（编号分别位2、3、4）。当执行full gc时，内存占用降低到13.8M。这个数据非常稳定，13.8M。

谢谢

这是第一次在github上提交issue。也是第一次利用自己的知识解决java内存相关的问题。感觉很宝贵。

pxoxy.bat start
the proxy service is not installed -指定的服务未安装

I got Exception:
It's strange that:
I visited url https://www.baidu.com, it works well,
but when I visited https://www.google.com,
it throws an exception:
Exception in thread "main" java.net.ProtocolException: unexpected end of stream
at okhttp3.internal.http1.Http1Codec$FixedLengthSource.read(Http1Codec.java:398)
at okio.RealBufferedSource.read(RealBufferedSource.java:46)
at okio.RealBufferedSource.exhausted(RealBufferedSource.java:56)
at okio.InflaterSource.refill(InflaterSource.java:101)
at okio.InflaterSource.read(InflaterSource.java:62)
at okio.GzipSource.read(GzipSource.java:80)
at okio.Buffer.writeAll(Buffer.java:1005)
at okio.RealBufferedSource.readString(RealBufferedSource.java:190)
at okhttp3.ResponseBody.string(ResponseBody.java:175)
at com.geccocrawler.socks5.test.HttpProxyClient.main(HttpProxyClient.java:42)

Here was my code:
user, password, host, port, I'm sure it's correct:
public static void main(String[] args) throws Exception {
final String user = "x";
final String password = "y";

	Proxy proxyTest = new Proxy(Proxy.Type.SOCKS, new InetSocketAddress("115.137.1.15", 6080));
	
	java.net.Authenticator.setDefault(new java.net.Authenticator()
	{
		private PasswordAuthentication authentication = new PasswordAuthentication(user, password.toCharArray());

		@Override
		protected PasswordAuthentication getPasswordAuthentication()
		{
			return authentication;
		}
	});

	OkHttpClient client = new OkHttpClient.Builder().proxy(proxyTest).build();
	Request request = new Request.Builder().url("https://www.google.com").build();
	Response response = client.newCall(request).execute();
	System.out.println(response.code());
	System.out.println(response.body().string());
	
	client.dispatcher().executorService().shutdown();
	client.connectionPool().evictAll();
}

有基于netty的 socks5 client吗

wrapper | The proxy service is not installed - The specified service does not exist as an installed service. (0x424)

2020-10-25 15:03:57 [nioEventLoopGroup-4-6] DEBUG com.geccocrawler.socks5.handler.ss5.Socks5InitialRequestHandler -初始化ss5连接 : DefaultSocks5InitialRequest(decoderResult: failure(io.netty.handler.codec.DecoderException: unsupported version: 67 (expected: 5)), authMethods: [NO_AUTH(0)]) 2020-10-25 15:03:57 [nioEventLoopGroup-4-6] DEBUG com.geccocrawler.socks5.handler.ss5.Socks5InitialRequestHandler -不是ss5协议: {} io.netty.handler.codec.DecoderException: unsupported version: 67 (expected: 5) at io.netty.handler.codec.socksx.v5.Socks5InitialRequestDecoder.decode(Socks5InitialRequestDecoder.java:55) at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:501) at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:366) at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:276) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.logging.LoggingHandler.channelRead(LoggingHandler.java:271) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.handler.traffic.AbstractTrafficShapingHandler.channelRead(AbstractTrafficShapingHandler.java:513) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357) at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379) at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365) at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919) at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166) at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:714) at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:650) at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:576) at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493) at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) at java.lang.Thread.run(Thread.java:748)
下载运行的时候，填写代理，浏览器访问报错