<div>
try this<br />
<br />
sa.sin_addr.s_addr= *((unsigned long *)host-&gt;h_addr);<br />

</div>


try this

sa.sin_addr.s_addr= *((unsigned long *)host->h_addr);


<div>
msmanju, thanks for the answer. However, as I hoped the code would explain, I want the IP address in a readable format (hence the char ipaddress[32]).<br />
Something in the form &quot;1.2.3.4&quot;.<br />
<br />
Thanks.<br />
<br />

</div>


msmanju, thanks for the answer. However, as I hoped the code would explain, I want the IP address in a readable format (hence the char ipaddress[32]).
Something in the form "1.2.3.4".

Thanks.



<div>
<div class="content wysiwyg-content">
How do I find the IP address for a given host, in C?<br />
This is on a UNIX box (AIX), TCP/IP installed and<br />
DNS available. Assume a hostname has no aliases and<br />
only one associated IP address.<br />
<br />
This is the code I have so far:<br />
<br />
&nbsp; struct hostent &nbsp; &nbsp; &nbsp;*host;<br />
&nbsp; struct sockaddr_in &nbsp;sa;<br />
&nbsp; char &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;ipaddress[32];<br />
<br />
&nbsp; host=gethostbyname(&quot;somese<wbr />rver.com&quot;)<wbr />;<br />
<br />
&nbsp; ... get IP address ...<br />
<br />
&nbsp; memset (&amp;sa, '\0', sizeof(sa));<br />
&nbsp; sa.sin_family &nbsp; &nbsp; &nbsp;= AF_INET;<br />
&nbsp; sa.sin_addr.s_addr=inet_ad<wbr />dr(ipaddre<wbr />ss);<br />
&nbsp; sa.sin_port &nbsp; &nbsp; &nbsp; &nbsp;= 80; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<br />
<br />
Thanks,<br />
pluim.<br />

</div>
</div>


How do I find the IP address for a given host, in C?
This is on a UNIX box (AIX), TCP/IP installed and
DNS available. Assume a hostname has no aliases and
only one associated IP address.

This is the code I have so far:

  struct hostent      *host;
  struct sockaddr_in  sa;
  char                ipaddress[32];

  host=gethostbyname("someserver.com");

  ... get IP address ...

  memset (&sa, '\0', sizeof(sa));
  sa.sin_family      = AF_INET;
  sa.sin_addr.s_addr=inet_addr(ipaddress);
  sa.sin_port        = 80;          

Thanks,
pluim.


Lookup IP address from hostname (C/socket)

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.