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EthernetNetIf/LPC2368/lwip/include/lwip/netdb.h@0:58c3d014a4e7, 2011-09-06 (annotated)

Committer:
slowness
Date:
Tue Sep 06 18:05:46 2011 +0000
Revision:
0:58c3d014a4e7

        

        
Who changed what in which revision?

        

            
                
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/*





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 * Redistribution and use in source and binary forms, with or without modification, 





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 * are permitted provided that the following conditions are met:





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 *





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 * 1. Redistributions of source code must retain the above copyright notice,





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 *    this list of conditions and the following disclaimer.





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 * 2. Redistributions in binary form must reproduce the above copyright notice,





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 *    this list of conditions and the following disclaimer in the documentation





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 *    and/or other materials provided with the distribution.





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 * 3. The name of the author may not be used to endorse or promote products





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 *    derived from this software without specific prior written permission. 





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 *





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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 





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 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 





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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT 





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 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 





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 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 





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 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 





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 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 





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 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 





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 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY 





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 * OF SUCH DAMAGE.





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 *





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 * This file is part of the lwIP TCP/IP stack.





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 * 





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 * Author: Simon Goldschmidt





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 *





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 */





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#ifndef __LWIP_NETDB_H__





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#define __LWIP_NETDB_H__





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#include "lwip/opt.h"





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#if LWIP_DNS && LWIP_SOCKET





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#include <stddef.h> /* for size_t */





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#include "lwip/inet.h"





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#include "lwip/sockets.h"





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/* some rarely used options */





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#ifndef LWIP_DNS_API_DECLARE_H_ERRNO





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#define LWIP_DNS_API_DECLARE_H_ERRNO 1





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#endif





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#ifndef LWIP_DNS_API_DEFINE_ERRORS





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#define LWIP_DNS_API_DEFINE_ERRORS 1





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#endif





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#ifndef LWIP_DNS_API_DECLARE_STRUCTS





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#define LWIP_DNS_API_DECLARE_STRUCTS 1





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#endif





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#if LWIP_DNS_API_DEFINE_ERRORS





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/** Errors used by the DNS API functions, h_errno can be one of them */





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#define EAI_NONAME      200





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#define EAI_SERVICE     201





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#define EAI_FAIL        202





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#define EAI_MEMORY      203





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#define HOST_NOT_FOUND  210





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#define NO_DATA         211





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#define NO_RECOVERY     212





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#define TRY_AGAIN       213





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#endif /* LWIP_DNS_API_DEFINE_ERRORS */





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#if LWIP_DNS_API_DECLARE_STRUCTS





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struct hostent {





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    char  *h_name;      /* Official name of the host. */





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    char **h_aliases;   /* A pointer to an array of pointers to alternative host names,





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                           terminated by a null pointer. */





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    int    h_addrtype;  /* Address type. */





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    int    h_length;    /* The length, in bytes, of the address. */





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    char **h_addr_list; /* A pointer to an array of pointers to network addresses (in





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                           network byte order) for the host, terminated by a null pointer. */





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#define h_addr h_addr_list[0] /* for backward compatibility */





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};





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struct addrinfo {





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    int               ai_flags;      /* Input flags. */





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    int               ai_family;     /* Address family of socket. */





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    int               ai_socktype;   /* Socket type. */





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    int               ai_protocol;   /* Protocol of socket. */





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    socklen_t         ai_addrlen;    /* Length of socket address. */





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    struct sockaddr  *ai_addr;       /* Socket address of socket. */





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    char             *ai_canonname;  /* Canonical name of service location. */





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    struct addrinfo  *ai_next;       /* Pointer to next in list. */





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};





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#endif /* LWIP_DNS_API_DECLARE_STRUCTS */





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#if LWIP_DNS_API_DECLARE_H_ERRNO





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/* application accessable error code set by the DNS API functions */





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extern int h_errno;





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#endif /* LWIP_DNS_API_DECLARE_H_ERRNO*/





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struct hostent *lwip_gethostbyname(const char *name);





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int lwip_gethostbyname_r(const char *name, struct hostent *ret, char *buf,





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                size_t buflen, struct hostent **result, int *h_errnop);





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void lwip_freeaddrinfo(struct addrinfo *ai);





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int lwip_getaddrinfo(const char *nodename,





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       const char *servname,





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       const struct addrinfo *hints,





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       struct addrinfo **res);





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#if LWIP_COMPAT_SOCKETS





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#define gethostbyname(name) lwip_gethostbyname(name)





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#define gethostbyname_r(name, ret, buf, buflen, result, h_errnop) \





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       lwip_gethostbyname_r(name, ret, buf, buflen, result, h_errnop)





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#define freeaddrinfo(addrinfo) lwip_freeaddrinfo(addrinfo)





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#define getaddrinfo(nodname, servname, hints, res) \





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       lwip_getaddrinfo(nodname, servname, hints, res)





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#endif /* LWIP_COMPAT_SOCKETS */





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#endif /* LWIP_DNS && LWIP_SOCKET */





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#endif /* __LWIP_NETDB_H__ */