DNS Class Reference

#include <dns.h>

Public Types
typedef std::map< std::string, int >	HostMap

Static Public Member Functions
static HostMap	resolve (const std::string &service, const std::string &proto, const std::string &domain, const LogSink &logInstance)
static HostMap	resolve (const std::string &domain, const LogSink &logInstance)
static int	connect (const std::string &host, const LogSink &logInstance)
static int	connect (const std::string &host, int port, const LogSink &logInstance)
static int	getSocket (const LogSink &logInstance)
static void	closeSocket (int fd, const LogSink &logInstance)

Detailed Description

This class holds a number of static functions used for DNS related stuff.

You should not need to use these functions directly.

Author

Jakob Schröter js@ca.nosp@m.maya.nosp@m..net

Since

0.3

Definition at line 61 of file dns.h.

Member Typedef Documentation

HostMap

typedef std::map<std::string, int> HostMap

A list of strings (used for server addresses) and ints (used for port numbers).

Definition at line 68 of file dns.h.

Member Function Documentation

closeSocket()

void closeSocket ( int  fd, const LogSink &  logInstance  )

static

Closes the given socket.

Parameters

fd	The socket to close.
logInstance	A LogSink to use for logging.

Definition at line 514 of file dns.cpp.

connect() [1/2]

int connect ( const std::string &  host, const LogSink &  logInstance  )

static

This is a convenience function which uses resolve() to get a list of hosts and connects to one of them.

Parameters

host	The host to resolve SRV records for.
logInstance	A LogSink to use for logging.

Returns

A file descriptor for the established connection.

Definition at line 317 of file dns.cpp.

connect() [2/2]

int connect ( const std::string &  host, int  port, const LogSink &  logInstance  )

static

This is a convenience function which connects to the given host and port. No SRV records are resolved. Use this function for special setups.

Parameters

host	The host/IP address to connect to.
port	A custom port to connect to.
logInstance	A LogSink to use for logging.

Returns

A file descriptor for the established connection.

Definition at line 458 of file dns.cpp.

getSocket()

int getSocket ( const LogSink &  logInstance )

static

A convenience function that prepares and returnes a simple, unconnected TCP socket.

Parameters

logInstance

A LogSink to use for logging.

Returns

A TCP socket.

Definition at line 335 of file dns.cpp.

resolve() [1/2]

DNS::HostMap resolve ( const std::string &  service, const std::string &  proto, const std::string &  domain, const LogSink &  logInstance  )

static

This function resolves a service/protocol/domain tuple.

Parameters

service	The SRV service type.
proto	The SRV protocol.
domain	The domain to search for SRV records.
logInstance	A LogSink to use for logging.

Returns

A list of weighted hostname/port pairs from SRV records, or A records if no SRV records where found.

Definition at line 202 of file dns.cpp.

resolve() [2/2]

static HostMap resolve ( const std::string &  domain, const LogSink &  logInstance  )

inlinestatic

This is a convenience funtion which uses resolve() to resolve SRV records for a given domain, using a service of xmpp-client and a proto of tcp.

Parameters

domain	The domain to resolve SRV records for.
logInstance	A LogSink to use for logging.

Returns

A list of weighted hostname/port pairs from SRV records, or A records if no SRV records where found.

Definition at line 90 of file dns.h.

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

• dns.h
• dns.cpp