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POCannot access memory of Ip address from gethostname
 

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    <p>I'm developing an after effects plugin and I'm trying to integrate raknet which is a c++ network library. When the raknet library is trying to get the ipv4 address by calling</p> <pre><code>gethostbyname </code></pre> <p>it then throws an error access violation reading location 0xFFFFFFFFFFFFFFFF</p> <pre><code>int idx=0; char ac[ 80 ]; int err = gethostname( ac, sizeof( ac ) ); (void) err; RakAssert(err != -1); struct hostent *phe = gethostbyname( ac ); if ( phe == 0 ) { RakAssert(phe!=0); return ; } for ( idx = 0; idx &lt; MAXIMUM_NUMBER_OF_INTERNAL_IDS; ++idx ) { if (phe-&gt;h_addr_list[ idx ] == 0) break; memcpy(&amp;addresses[idx].address.addr4.sin_addr,phe-&gt;h_addr_list[ idx ], sizeof(struct in_addr)); } while (idx &lt; MAXIMUM_NUMBER_OF_INTERNAL_IDS) { addresses[idx]=UNASSIGNED_SYSTEM_ADDRESS; idx++; } </code></pre> <p>Here are some pictures of what I see.</p> <p><a href="http://jacobsgriffith.com/stackoverflow/noaccesserror.png" rel="nofollow noreferrer">http://jacobsgriffith.com/stackoverflow/noaccesserror.png</a></p> <p>I've read this and it doesn't look like the library implemented it wrong. <a href="http://msdn.microsoft.com/en-us/library/windows/desktop/ms738524%28v=vs.85%29.aspx" rel="nofollow noreferrer">Microsoft Documentation On gethostbyname</a></p> <p>When I hover over h_addr_list and h_aliases I get .</p> <p><a href="http://jacobsgriffith.com/stackoverflow/noaccess.jpg" rel="nofollow noreferrer">http://jacobsgriffith.com/stackoverflow/noaccess.jpg</a></p> <p>Anybody have any ideas? Why is this failing I'm pretty sure this is a common function.</p> <p>Another thing, is there any difference between the implementations of the gethostbyname function from winsock and winsock2?</p>
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    1. COPlease don't post pictures of code. Post your code as you typed it. In any case, it's not likely crashing on gethostbyname, otherwise you wouldn't have been able to debug it to the point where you got "phe" assigned to something valid. That for-loop below the gethostbyname call looks suspicious, but I can't see what your for-loop conditional expression is is because it's obscured by the debug window and the relevant portions below the break statement are cut off. Please post the entire body to your GetMyIP function call.
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    2. COSorry about that I forgot to include the code.. Updated question
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      1. USjacobsgriffith
 

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