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Functions
Description
GNetworkAddress provides an easy way to resolve a hostname and then attempt to connect to that host, handling the possibility of multiple IP addresses and multiple address families.
See GSocketConnectable for and example of using the connectable interface.
Functions
g_network_address_new ()
GSocketConnectable * g_network_address_new (const gchar *hostname
,guint16 port
);
Creates a new GSocketConnectable for connecting to the given
hostname
and port
.
Note that depending on the configuration of the machine, a
hostname
of localhost
may refer to the IPv4 loopback address
only, or to both IPv4 and IPv6; use
g_network_address_new_loopback()
to create a GNetworkAddress that
is guaranteed to resolve to both addresses.
Since 2.22
g_network_address_new_loopback ()
GSocketConnectable *
g_network_address_new_loopback (guint16 port
);
Creates a new GSocketConnectable for connecting to the local host
over a loopback connection to the given port
. This is intended for
use in connecting to local services which may be running on IPv4 or
IPv6.
The connectable will return IPv4 and IPv6 loopback addresses,
regardless of how the host resolves localhost
. By contrast,
g_network_address_new()
will often only return an IPv4 address when
resolving localhost
, and an IPv6 address for localhost6
.
g_network_address_get_hostname() will always return localhost
for
GNetworkAddresses created with this constructor.
Since 2.44
g_network_address_parse ()
GSocketConnectable * g_network_address_parse (const gchar *host_and_port
,guint16 default_port
,GError **error
);
Creates a new GSocketConnectable for connecting to the given
hostname
and port
. May fail and return NULL
in case
parsing host_and_port
fails.
host_and_port
may be in any of a number of recognised formats; an IPv6
address, an IPv4 address, or a domain name (in which case a DNS
lookup is performed). Quoting with [] is supported for all address
types. A port override may be specified in the usual way with a
colon.
If no port is specified in host_and_port
then default_port
will be
used as the port number to connect to.
In general, host_and_port
is expected to be provided by the user
(allowing them to give the hostname, and a port overide if necessary)
and default_port
is expected to be provided by the application.
(The port component of host_and_port
can also be specified as a
service name rather than as a numeric port, but this functionality
is deprecated, because it depends on the contents of /etc/services,
which is generally quite sparse on platforms other than Linux.)
Since 2.22
g_network_address_parse_uri ()
GSocketConnectable * g_network_address_parse_uri (const gchar *uri
,guint16 default_port
,GError **error
);
Creates a new GSocketConnectable for connecting to the given
uri
. May fail and return NULL
in case parsing uri
fails.
Using this rather than g_network_address_new()
or
g_network_address_parse()
allows GSocketClient to determine
when to use application-specific proxy protocols.
Since 2.26
g_network_address_get_hostname ()
const gchar *
g_network_address_get_hostname (GNetworkAddress *addr
);
Gets addr
's hostname. This might be either UTF-8 or ASCII-encoded,
depending on what addr
was created with.
Since 2.22
g_network_address_get_port ()
guint16
g_network_address_get_port (GNetworkAddress *addr
);
Gets addr
's port number
Since 2.22
g_network_address_get_scheme ()
const gchar *
g_network_address_get_scheme (GNetworkAddress *addr
);
Gets addr
's scheme
Since 2.26
Types and Values
GNetworkAddress
typedef struct _GNetworkAddress GNetworkAddress;
A GSocketConnectable for resolving a hostname and connecting to that host.
Property Details
The “hostname”
property
“hostname” gchar *
Hostname to resolve.
Flags: Read / Write / Construct Only
Default value: NULL
The “port”
property
“port” guint
Network port.
Flags: Read / Write / Construct Only
Allowed values: <= 65535
Default value: 0
The “scheme”
property
“scheme” gchar *
URI Scheme.
Flags: Read / Write / Construct Only
Default value: NULL