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/* $Header: /pjproject-0.3/pjlib/include/pj/addr_resolv.h 2 10/14/05 12:25a Bennylp $ */
#ifndef __PJ_ADDR_RESOLV_H__
#define __PJ_ADDR_RESOLV_H__
/**
* @file addr_resolv.h
* @brief Address resolve (pj_gethostbyname()).
*/
#include <pj/types.h>
PJ_BEGIN_DECL
/**
* @defgroup pj_addr_resolve Address Resolution
* @ingroup PJ_IO
* @{
*
* This module provides function to resolve Internet address of the
* specified host name. To resolve a particular host name, application
* can just call #pj_gethostbyname().
*
* Example:
* <pre>
* ...
* pj_hostent he;
* pj_status_t rc;
* pj_str_t host = pj_str("host.example.com");
*
* rc = pj_gethostbyname( &host, &he);
* if (rc != PJ_SUCCESS) {
* char errbuf[80];
* pj_strerror( rc, errbuf, sizeof(errbuf));
* PJ_LOG(2,("sample", "Unable to resolve host, error=%s", errbuf));
* return rc;
* }
*
* // process address...
* addr.sin_addr.s_addr = *(pj_uint32_t*)he.h_addr;
* ...
* </pre>
*
* It's pretty simple really...
*/
/** This structure describes an Internet host address. */
typedef struct pj_hostent
{
char *h_name; /**< The official name of the host. */
char **h_aliases; /**< Aliases list. */
int h_addrtype; /**< Host address type. */
int h_length; /**< Length of address. */
char **h_addr_list; /**< List of addresses. */
} pj_hostent;
/** Shortcut to h_addr_list[0] */
#define h_addr h_addr_list[0]
/**
* This function fills the structure of type pj_hostent for a given host name.
*
* @param name Host name, or IPv4 or IPv6 address in standard dot notation.
* @param he The pj_hostent structure to be filled.
*
* @return PJ_SUCCESS, or the appropriate error codes.
*/
PJ_DECL(pj_status_t) pj_gethostbyname(const pj_str_t *name, pj_hostent *he);
/** @} */
PJ_END_DECL
#endif /* __PJ_ADDR_RESOLV_H__ */
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