Hi, We use httpcomponents core for sending high volume of data through SSL connection. Right now we have encountered an issue: if the first nameserver is out of rotation, the performance is vastly degraded. The initial investigation found that there is this class "org.apache.http.nio.pool.AbstractNIOConnPool" in which the "requestCompleted" method has a lock on a block of code, where the connection is created. During the connection creation, the constructor of "org.apache.http.nio.reactor.ssl.SSLIOSession" will do a reverse DNS lookup through
final String<http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/lang/String.java#String> hostname = ((InetSocketAddress<http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/net/InetSocketAddress.java#InetSocketAddress>) address).getHostName<http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/net/InetSocketAddress.java#InetSocketAddress.getHostName%28%29>(); There is a cache DNS TTL setting for enable the cache for ip lookup by name. But I didn't found any setting for enabling the cache for reverse dns lookup. So the question is: is there any way to avoid this reverse DNS lookup? Thanks, Huibing
