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Redis hostname gets a `]` at the end

See original GitHub issue

Expected behavior

Connects to Redis on AWS

Actual behavior

Netty throws an exception trying to resolve the hostname:

Caused by: io.netty.resolver.dns.DnsResolveContext$SearchDomainUnknownHostException: Search domain query failed. Original hostname: 'ec2-54-234-206-155.compute-1.amazonaws.com]' failed to resolve 'ec2-54-234-206-155.compute-1.amazonaws.com].ec2.internal' after 3 queries

Somehow, there is a ] added to the hostname (ec2-54-234-206-155.compute-1.amazonaws.com]), even though my redisson.json does not contain one.

Steps to reproduce or test case

Click this button to deploy the repro example for free on Heroku:

Then view the logs (you may need to restart the app if you want to view the logs in the browser because it crashes).

Or you may run this sample app with a command like:

$ java -jar webapp-runner.jar --session-store redis --session-store-pool-size 5 target/heroku-redisson-test.war

Redis version

5.0

Redisson version

3.11.4 (appeared in 3.11.01 and possibly earlier but not before 3.10.0)

Redisson configuration

{"singleServerConfig":{"idleConnectionTimeout":10000,"pingTimeout":1000,"connectTimeout":10000,"timeout":5000,"retryAttempts":3,"retryInterval":1500,"password":"pb9e2626905755078bb5c0fa4d482a19e5871b66645aac0c8650794d3c6e742f2","subscriptionsPerConnection":5,"sslEnableEndpointIdentification":true,"sslProvider":"JDK","
pingConnectionInterval":0,"keepAlive":false,"tcpNoDelay":false,"address":"redis://<redacted>:<redacted>@ec2-54-234-206-155.compute-1.amazonaws.com:15319","subscriptionConnectionMinimumIdleSize":1,"subscriptionConnectionPoolSize":50,"connectionMinimumIdleSize":5,"connectionPoolSize":5,"database":0,"dnsMonitoringInterval
":5000},"threads":16,"nettyThreads":32,"codec":{"class":"org.redisson.codec.FstCodec"},"referenceEnabled":true,"transportMode":"NIO","lockWatchdogTimeout":30000,"keepPubSubOrder":true,"decodeInExecutor":false,"useScriptCache":false,"minCleanUpDelay":5,"maxCleanUpDelay":1800,"addressResolverGroupFactory":{"class":"org.redisson.connection.DnsAddressResolverGroupFa
ctory"}}

Other information

Tomcat 8.5.47

The source code for the webapp-runner code that sets up Redisson can be found on Github.

Full error:

SEVERE: The session manager failed to start
org.apache.catalina.LifecycleException: io.netty.resolver.dns.DnsResolveContext$SearchDomainUnknownHostException: Search domain query failed. Original hostname: 'ec2-34-226-17-251.compute-1.amazonaws.com]' failed to resolve 'ec2-34-226-17-251.compute-1.amazonaws.com].ec2.internal' after 3 queries
	at org.redisson.tomcat.RedissonSessionManager.buildClient(RedissonSessionManager.java:354)
	at org.redisson.tomcat.RedissonSessionManager.startInternal(RedissonSessionManager.java:237)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5182)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1412)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1402)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: io.netty.resolver.dns.DnsResolveContext$SearchDomainUnknownHostException: Search domain query failed. Original hostname: 'ec2-34-226-17-251.compute-1.amazonaws.com]' failed to resolve 'ec2-34-226-17-251.compute-1.amazonaws.com].ec2.internal' after 3 queries
	at io.netty.resolver.dns.DnsResolveContext.finishResolve(DnsResolveContext.java:925)
	at io.netty.resolver.dns.DnsResolveContext.tryToFinishResolve(DnsResolveContext.java:884)
	at io.netty.resolver.dns.DnsResolveContext.query(DnsResolveContext.java:356)
	at io.netty.resolver.dns.DnsResolveContext.onResponse(DnsResolveContext.java:543)
	at io.netty.resolver.dns.DnsResolveContext.access$400(DnsResolveContext.java:64)
	at io.netty.resolver.dns.DnsResolveContext$2.operationComplete(DnsResolveContext.java:400)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:577)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners0(DefaultPromise.java:570)
	at io.netty.util.concurrent.DefaultPromise.notifyListenersNow(DefaultPromise.java:549)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:490)
	at io.netty.util.concurrent.DefaultPromise.setValue0(DefaultPromise.java:615)
	at io.netty.util.concurrent.DefaultPromise.setSuccess0(DefaultPromise.java:604)
	at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:104)
	at io.netty.resolver.dns.DnsQueryContext.setSuccess(DnsQueryContext.java:204)
	at io.netty.resolver.dns.DnsQueryContext.finish(DnsQueryContext.java:196)
	at io.netty.resolver.dns.DnsNameResolver$DnsResponseHandler.channelRead(DnsNameResolver.java:1320)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:102)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:352)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1422)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:374)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:360)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:931)
	at io.netty.channel.nio.AbstractNioMessageChannel$NioMessageUnsafe.read(AbstractNioMessageChannel.java:93)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:700)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:635)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:552)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:514)
	at io.netty.util.concurrent.SingleThreadEventExecutor$6.run(SingleThreadEventExecutor.java:1044)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
	... 1 more