Group pj_addr_resolve¶
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group
pj_addr_resolve
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:
It’s pretty simple really…
Defines
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h_addr
¶ Shortcut to h_addr_list[0]
Functions
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pj_status_t
pj_gethostbyname
(const pj_str_t *name, pj_hostent *he)¶ This function fills the structure of type pj_hostent for a given host name. For host resolution function that also works with IPv6, please see pj_getaddrinfo().
- Parameters
name – Host name to resolve. Specifying IPv4 address here may fail on some platforms (e.g. Windows)
he – The pj_hostent structure to be filled. Note that the pointers in this structure points to temporary variables which value will be reset upon subsequent invocation.
- Returns
PJ_SUCCESS, or the appropriate error codes.
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pj_status_t
pj_gethostip
(int af, pj_sockaddr *addr)¶ Resolve the primary IP address of local host.
- Parameters
af – The desired address family to query. Valid values are pj_AF_INET() or pj_AF_INET6().
addr – On successful resolution, the address family and address part of this socket address will be filled up with the host IP address, in network byte order. Other parts of the socket address are untouched.
- Returns
PJ_SUCCESS on success, or the appropriate error code.
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pj_status_t
pj_getdefaultipinterface
(int af, pj_sockaddr *addr)¶ Get the IP address of the default interface. Default interface is the interface of the default route.
- Parameters
af – The desired address family to query. Valid values are pj_AF_INET() or pj_AF_INET6().
addr – On successful resolution, the address family and address part of this socket address will be filled up with the host IP address, in network byte order. Other parts of the socket address are untouched.
- Returns
PJ_SUCCESS on success, or the appropriate error code.
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pj_status_t
pj_getaddrinfo
(int af, const pj_str_t *name, unsigned *count, pj_addrinfo ai[])¶ This function translates the name of a service location (for example, a host name) and returns a set of addresses and associated information to be used in creating a socket with which to address the specified service.
- Parameters
af – The desired address family to query. Valid values are pj_AF_INET(), pj_AF_INET6(), or pj_AF_UNSPEC().
name – Descriptive name or an address string, such as host name.
count – On input, it specifies the number of elements in ai array. On output, this will be set with the number of address informations found for the specified name.
ai – Array of address info to be filled with the information about the host.
- Returns
PJ_SUCCESS on success, or the appropriate error code.
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struct
pj_hostent
¶ - #include <addr_resolv.h>
This structure describes an Internet host address.
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struct
pj_addrinfo
¶ - #include <addr_resolv.h>
This structure describes address information pj_getaddrinfo().
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