Exception java.util.NoSuchElementException: socks when making https request with socks5 proxy

[Fallen-Breath]

To reproduce

package me.fallenbreath.playground;

import org.asynchttpclient.proxy.ProxyType;

import static org.asynchttpclient.Dsl.*;

public class Main
{
	public static void main(String[] args) throws Exception
	{
		var proxyServer = proxyServer("127.0.0.1", 1081).
				setProxyType(ProxyType.SOCKS_V5);

		try (var client = asyncHttpClient(config().setProxyServer(proxyServer)))
		{
			var response = client.prepareGet("https://cloudflare.com/cdn-cgi/trace").execute().get();
			System.out.println(response);
		}
	}
}

Exception:

Exception in thread "main" java.util.concurrent.ExecutionException: java.net.ConnectException: socks
	at java.base/java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:396)
	at java.base/java.util.concurrent.CompletableFuture.get(CompletableFuture.java:2073)
	at org.asynchttpclient.netty.NettyResponseFuture.get(NettyResponseFuture.java:210)
	at me.fallenbreath.playground.Main.main(Main.java:16)
Caused by: java.net.ConnectException: socks
	at org.asynchttpclient.netty.channel.NettyConnectListener.onFailure(NettyConnectListener.java:173)
	at org.asynchttpclient.netty.channel.NettyConnectListener.onSuccess(NettyConnectListener.java:109)
	at org.asynchttpclient.netty.channel.NettyChannelConnector$1.onSuccess(NettyChannelConnector.java:91)
	at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:28)
	at org.asynchttpclient.netty.SimpleChannelFutureListener.operationComplete(SimpleChannelFutureListener.java:22)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:590)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:583)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:559)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:492)
	at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:636)
	at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:625)
	at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:105)
	at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:84)
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.fulfillConnectPromise(AbstractNioChannel.java:300)
	at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:335)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:776)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.util.NoSuchElementException: socks
	at io.netty.channel.DefaultChannelPipeline.getContextOrDie(DefaultChannelPipeline.java:1073)
	at io.netty.channel.DefaultChannelPipeline.addAfter(DefaultChannelPipeline.java:302)
	at io.netty.channel.DefaultChannelPipeline.addAfter(DefaultChannelPipeline.java:290)
	at org.asynchttpclient.netty.channel.ChannelManager.addSslHandler(ChannelManager.java:427)
	at org.asynchttpclient.netty.channel.NettyConnectListener.onSuccess(NettyConnectListener.java:107)
	... 21 more

The issue only occurs with socks5 + https. Sock4 is not tested, and http proxy works normally

Environment:

• Java 11
• org.asynchttpclient:async-http-client:3.0.0.Beta2

[lakxtxue]

I have the same problem.

[cuicuicuinice]

难顶，我也遇到了...

[010227leo]

the same problem, do you have any solutions? @hyperxpro

[hyperxpro]

the same problem, do you have any solutions? @hyperxpro

Unfortunately no. But feel free to raise a PR. :)

[lean-ish]

I think netty/netty#11945 is the cause of the issue
If I force the use of netty-transport 4.1.72.Final => I cannot reproduce this anymore

api ('io.netty:netty-transport') {
    version {
        strictly '4.1.72.Final'
    }
}

I've debugged it and !ctx.isRemoved() does not behave the same as pipeline.context(this) != null, leading initChannel to drop it

I actually use this to verify the change in behavior

@Test
public void testSSL()
        throws ExecutionException, InterruptedException, IOException {
    AsyncHttpClientConfig config = new DefaultAsyncHttpClientConfig.Builder()
            .setProxyServerSelector(uri -> new ProxyServer.Builder("<your_proxy>", 1080)
                    .setProxyType(ProxyType.SOCKS_V5)
                    .build())
            .build();

    try (AsyncHttpClient asyncHttpClient = new DefaultAsyncHttpClient(config)) {
        int code = asyncHttpClient.prepare("GET", "https://example.org/")
                .execute()
                .get()
                .getStatusCode();
        assertEquals(200, code);
    }
}

I've opened netty/netty#14679