Stark Arya created TINKERPOP-2740:
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Summary: first request suspend more than 9s when using
gremlin-java-driver
Key: TINKERPOP-2740
URL: https://issues.apache.org/jira/browse/TINKERPOP-2740
Project: TinkerPop
Issue Type: Improvement
Components: driver
Affects Versions: 3.6.0, 3.4.3
Reporter: Stark Arya
when user use gremlin-driver in private cloud environment,
In AUTHENTICATE rsp func, client need reverse name lookup through DNS, which
will take more than 9s in certain env; the calling code slice:
{code:java}
Handler.GremlinSaslAuthenticationHandler.channelRead0
saslClient.set(this.saslClient(this.getHostName(channelHandlerContext)));
private String getHostName(final ChannelHandlerContext channelHandlerContext) {
return((InetSocketAddress)channelHandlerContext.channel().remoteAddress()).getAddress().getCanonicalHostName();
}
{code}
there are many talks about this talks about this question.
[https://www.thecodingforums.com/threads/very-slow-ssl-connection-from-win-to-linux.147274/#post-2959030]
[https://stackoverflow.com/questions/3193936/how-to-disable-javas-ssl-reverse-dns-lookup]
I think we can rewrite the getHostName like this(use getHostAddress):
{code:java}
private String getHostName(final ChannelHandlerContext channelHandlerContext) {
return
((InetSocketAddress)channelHandlerContext.channel().remoteAddress()).getAddress().getHostAddress();
} {code}
all versions seed affected
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