Netty 代理服务器抛出 NotSslRecordException 异常

【问题标题】：NotSslRecordException exception thrown with Netty proxy serverNetty 代理服务器抛出 NotSslRecordException 异常
【发布时间】：2019-04-24 01:40:08
【问题描述】：

我正在将我的本地 netty 服务器连接到远程 https 服务器以进行代理请求。

public class CustomInitializer extends ChannelInitializer<SocketChannel> {

    @Autowired(required = false)
    private SslContext sslContext;


    @Override
    public void initChannel(SocketChannel ch) {
        ChannelPipeline p = ch.pipeline();
        if (sslContext != null) {
            p.addLast(sslContext.newHandler(ch.alloc()));
        }
        p.addLast(new LoggingHandler(LogLevel.INFO));
        p.addLast(new HttpClientCodec());
        p.addLast(new HttpObjectAggregator(8*1024, true));
        p.addLast(new MyCustomHandler());
    }
}

这是我创建 ssLcontext bean 的方法

@Bean
    public SslContext sslContext(@Value("${tcp.ssl}") boolean ssl) throws SSLException, CertificateException {
        SslContext sslContext = null;
        if (ssl) {
            SelfSignedCertificate ssc = new SelfSignedCertificate();
            sslContext = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
        }
        return sslContext;
    }

当我点击我的本地主机时，它应该代理到后端。我得到以下异常。但是，如果关闭 SSL 并且我连接到在不同端口上运行的本地服务器远程，它可以正常工作

io.netty.handler.codec.DecoderException: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: dsffddfs
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:459)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:547)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:501)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:834)
io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: thjhjhhj     at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1178)
    at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
    at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:547)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:501)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:834)
io.netty.handler.codec.DecoderException: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: tyuuiiio
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:459)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:647)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:547)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:501)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:461)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:834)
Caused by: io.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record: 678900
    at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1178)
    at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1243)
    at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
    at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
    ... 16 more

编辑

添加的日志

X`20190423173352.427``40`````io.netty.handler.logging.LoggingHandler```````eE````INFO`io.netty.handler.logging.LoggingHandler`[id: 0xc839c47e, L:/0:0:0:0:0:0:0:0:8080] READ: [id: 0xca2cb8c7, L:/0:0:0:0:0:0:0:1:8080 - R:/0:0:0:0:0:0:0:1:56170]
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【问题讨论】：

    标签： ssl netty


    【解决方案1】：

    当您收到NotSslRecordException 异常时，最好的起点是错误之后的随机字节块。

    您的“blob”以以下字节开头：504f5354...

    在converting 十六进制数据返回一个字符串之后，你得到50 = P, 4f = O, 53 = S, 54 = T, final结果：POST

    既然我们现在将二进制 blob 的开头转换为字符串，我们现在需要弄清楚哪些协议使用这些“魔术字符串”。我们不用找很远，这是HTTP Request，你不能用HTTPS来接收。

    解决方案很简单，使用https 而不是http 连接到您的服务器：

    https://localhost:8080/

    【讨论】：

    • 我在日志中得到了这个。 USER_EVENT: SslHandshakeCompletionEvent(javax.net.ssl.SSLException: handshake timed out) 请求被丢弃
    • @brainstorm 将日志处理程序放在 ssl 处理程序之前，看看服务器是否真的响应客户端
    • 我移动了记录器，现在我没有看到握手错误，但响应仍然被切断。我在上面的帖子中添加了日志
    • 我一直调试，发现还是握手错误，backEndHandler#ChannelRead 没有被调用。我在 frontEndHandler 内的 operationComplete 看到错误。
    • 基本上一种是使用明文加密方法，另一种是使用TLS/SSL加密。这就是此异常的原因。
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