hostname - Get host name in java -


i using jdk 8 weblogic server 12 r2c. application public facing , need host name of client. if client host name in list of allowed host names can access application, special features shown them. question how host name. tried below code , getting following errors:

errors:

  1. java.net.unknownhostexception: 234:343:343f:d1d34:a34:c%c3:45263:ab3c, 449.6.087.678: invalid ipv6 address

  2. java.net.unknownhostexception: 14.5.254.458, 65.15.5.15: unknown error.

    at java.net.inet4addressimpl.lookupallhostaddr(native method) @ java.net.inetaddress$2.lookupallhostaddr(inetaddress.java:928) @ java.net.inetaddress.getaddressesfromnameservice(inetaddress.java:1323) @ java.net.inetaddress.getallbyname0(inetaddress.java:1276) @ java.net.inetaddress.getallbyname(inetaddress.java:1192)

all above ip address sample dummy address taken server log.

string ipadr = request.getheader("x-forwarded-for");   if (ipadr == null) {     ipadr = request.getremoteaddr();   }   inetaddress addr = null;   string host = null;   if (ipaddress != null) {     addr = inetaddress.getbyname(ipadr);     host = addr.gethostname();   }

it happens request may come proxies server, in case how domain name. tee above in filter code invoked every request.


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