Resolver Class Reference

DNS services. More...

#include <yateclass.h>

Public Types
enum	Type {   Unknown, Srv, Naptr, A4,   A6, Txt }

Static Public Member Functions
static bool	available (Type type=Unknown)
static bool	init (int timeout=-1, int retries=-1)
static int	query (Type type, const char *dname, ObjList &result, String *error=0)
static int	srvQuery (const char *dname, ObjList &result, String *error=0)
static int	naptrQuery (const char *dname, ObjList &result, String *error=0)
static int	a4Query (const char *dname, ObjList &result, String *error=0)
static int	a6Query (const char *dname, ObjList &result, String *error=0)
static int	txtQuery (const char *dname, ObjList &result, String *error=0)

Static Public Attributes
static const TokenDict	s_types []

Detailed Description

DNS services.

This class offers DNS query services

Member Enumeration Documentation

enum Type

Resolver handled types

Member Function Documentation

static int a4Query ( const char *  dname, ObjList &  result, String *  error = 0  )

static

Make an A (IPv4 Address) query

Parameters

dname	Domain to query
result	List of resulting TxtRecord items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

static int a6Query ( const char *  dname, ObjList &  result, String *  error = 0  )

static

Make an AAAA (IPv6 Address) query

Parameters

dname	Domain to query
result	List of resulting TxtRecord items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

static bool available ( Type  type = Unknown )

static

Runtime check for resolver availability

Parameters

type	Optional type to check. Set it to Unknown (default) to check general resolver availability

Returns

True if the resolver is available on current platform

static bool init ( int  timeout = -1, int  retries = -1  )

static

Initialize the resolver in the current thread

Parameters

timeout	Query timeout. Negative to use default
retries	The number of query retries. Negative to use default

Returns

True on success

static int naptrQuery ( const char *  dname, ObjList &  result, String *  error = 0  )

static

Make a NAPTR (Naming Authority Pointer) query

Parameters

dname	Domain to query
result	List of resulting NaptrRecord items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

static int query ( Type  type, const char *  dname, ObjList &  result, String *  error = 0  )

static

Make a query

Parameters

type	Query type as enumeration
dname	Domain to query
result	List of resulting record items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

static int srvQuery ( const char *  dname, ObjList &  result, String *  error = 0  )

static

Make a SRV (Service Location) query

Parameters

dname	Domain to query
result	List of resulting SrvRecord items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

static int txtQuery ( const char *  dname, ObjList &  result, String *  error = 0  )

static

Make a TXT (Text) query

Parameters

dname	Domain to query
result	List of resulting TxtRecord items
error	Optional string to be filled with error string

Returns

0 on success, error code otherwise (h_errno value on Linux)

Member Data Documentation

const TokenDict s_types[]

static

Resolver type names

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The documentation for this class was generated from the following file:

• yateclass.h