There is some error, so I resend again. [root@myHOST ~]# ./hostname 172.18.4.49 >><<IP: 172.18.4.49 >><<HOST: (null) [root@myHOST ~]# ./hostname 172.18.4.48 >><<IP: 172.18.4.48 >><<HOST: localhost
Note: The 172.18.4.49 and 172.18.4.48 are not in /etc/hosts. ------------------ Original ------------------ From: "Joshua Marantz";<jmara...@google.com>; Send time: Sunday, Feb 1, 2015 10:56 PM To: "GHui"<ugi...@gmail.com>; Cc: "Jeff Trawick"<traw...@gmail.com>; "dev"<dev@apr.apache.org>; Subject: Re: apr_getnameinfo get localhost I am not an expert in this apr routine, but I think it might help if you gave the command-line argument you used when testing your program. -Josh On Sun, Feb 1, 2015 at 7:17 AM, GHui <ugi...@gmail.com> wrote: Is there any good news? Any help will be appreciated. --GHui ------------------ Original ------------------ From: "ugiwgh";<ugi...@gmail.com>; Send time: Thursday, Jan 29, 2015 9:03 AM To: "Jeff Trawick"<traw...@gmail.com>; Cc: "dev"<dev@apr.apache.org>; Subject: Re: apr_getnameinfo get localhost From: "Jeff Trawick";<traw...@gmail.com>; Send time: Wednesday, Jan 28, 2015 10:26 PM On Wed, Jan 28, 2015 at 2:26 AM, GHui <ugi...@gmail.com> wrote: I used the function apr_getnameinfo to get remote hostname. But it return "localhost". I don't know why this happend. Any help will be appreciated. --GHui Please show code, such as where the second parameter to apr_getnameinfo() came from. -- Born in Roswell... married an alien... http://emptyhammock.com/ The code is following. --------------------------------------------- int main(int argc,char **argv) { if(2!=argc) { printf("Usage: %s <ip>\n",argv[0]); return 1; } char *remoteip=argv[1]; printf(">><<IP: %s\n",remoteip); apr_initialize(); apr_pool_t *mp; apr_pool_create(&mp,NULL); apr_sockaddr_t *sa; apr_sockaddr_info_get(&sa,remoteip,APR_INET,10089,0,mp); char *hostname=NULL; apr_getnameinfo(&hostname,sa,0); printf(">><<HOST: %s\n",hostname); apr_terminate(); return 0; } --------------------------------------------
