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POWhy is h_addr_list in struct hostent a char ** instead of struct in_addr **?
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20658920
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2013-12-18T13:00:17.240
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2
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2013-12-18T16:46:22.227
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2013-12-18T16:46:22.227
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text
Body
<p>I am new to network programming. The following structure definitions are quite confusing to me. Here <code>h_addr_list</code> is a defined as string array, but it is used to store array of <code>in_addr</code> structures. Why didn't it define as <code>struct in_addr **h_addr_list</code> rather than <code>char **h_addr_list</code>?</p> <pre><code>struct hostent { char *h_name; /* Official domain name of host */ char **h_aliases; /* Null-terminated array of domain names */ int h_addrtype; /* Host address type (AF_INET) */ int h_length; /* Length of an address, in bytes */ char **h_addr_list; /* Null-terminated array of in_addr structs */ }; struct in_addr { unsigned int s_addr; /* Network byte order (big-endian) */ }; </code></pre>
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<c><pointers><struct><network-programming>
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Why is h_addr_list in struct hostent a char ** instead of struct in_addr **?
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