link.h File Reference

A channel for transferring messages. More...

#include <proton/import_export.h>
#include <proton/type_compat.h>
#include <proton/condition.h>
#include <proton/terminus.h>
#include <proton/types.h>
#include <proton/object.h>
#include <stddef.h>

Go to the source code of this file.

Enumerations
enum	pn_snd_settle_mode_t { PN_SND_UNSETTLED, PN_SND_SETTLED, PN_SND_MIXED }
	Describes the permitted/expected settlement behaviours of a sending link. More...
enum	pn_rcv_settle_mode_t { PN_RCV_FIRST, PN_RCV_SECOND }
	Describes the permitted/expected settlement behaviours of a receiving link. More...

Functions
pn_link_t *	pn_sender (pn_session_t *session, const char *name)
	Construct a new sender on a session. More...
pn_link_t *	pn_receiver (pn_session_t *session, const char *name)
	Construct a new receiver on a session. More...
void	pn_link_free (pn_link_t *link)
	Free a link object. More...
void *	pn_link_get_context (pn_link_t *link)
	Get the application context that is associated with a link object. More...
void	pn_link_set_context (pn_link_t *link, void *context)
	Set a new application context for a link object. More...
pn_record_t *	pn_link_attachments (pn_link_t *link)
	Get the attachments that are associated with a link object. More...
const char *	pn_link_name (pn_link_t *link)
	Get the name of a link. More...
bool	pn_link_is_sender (pn_link_t *link)
	Test if a link is a sender. More...
bool	pn_link_is_receiver (pn_link_t *link)
	Test if a link is a receiver. More...
pn_state_t	pn_link_state (pn_link_t *link)
	Get the endpoint state flags for a link. More...
pn_error_t *	pn_link_error (pn_link_t *link)
	Deprecated - Use pn_link_condition(). More...
pn_condition_t *	pn_link_condition (pn_link_t *link)
	Get the local condition associated with a link endpoint. More...
pn_condition_t *	pn_link_remote_condition (pn_link_t *link)
	Get the remote condition associated with a link endpoint. More...
pn_session_t *	pn_link_session (pn_link_t *link)
	Get the parent session for a link object. More...
pn_link_t *	pn_link_head (pn_connection_t *connection, pn_state_t state)
	Retrieve the first link that matches the given state mask. More...
pn_link_t *	pn_link_next (pn_link_t *link, pn_state_t state)
	Retrieve the next link that matches the given state mask. More...
void	pn_link_open (pn_link_t *link)
	Open a link. More...
void	pn_link_close (pn_link_t *link)
	Close a link. More...
void	pn_link_detach (pn_link_t *link)
	Detach a link. More...
pn_terminus_t *	pn_link_source (pn_link_t *link)
	Access the locally defined source definition for a link. More...
pn_terminus_t *	pn_link_target (pn_link_t *link)
	Access the locally defined target definition for a link. More...
pn_terminus_t *	pn_link_remote_source (pn_link_t *link)
	Access the remotely defined source definition for a link. More...
pn_terminus_t *	pn_link_remote_target (pn_link_t *link)
	Access the remotely defined target definition for a link. More...
pn_delivery_t *	pn_link_current (pn_link_t *link)
	Get the current delivery for a link. More...
bool	pn_link_advance (pn_link_t *link)
	Advance the current delivery of a link to the next delivery on the link. More...
int	pn_link_credit (pn_link_t *link)
	Get the credit balance for a link. More...
int	pn_link_queued (pn_link_t *link)
	Get the number of queued deliveries for a link. More...
int	pn_link_remote_credit (pn_link_t *link)
	Get the remote view of the credit for a link. More...
bool	pn_link_get_drain (pn_link_t *link)
	Get the drain flag for a link. More...
int	pn_link_drained (pn_link_t *link)
	Drain excess credit for a link. More...
int	pn_link_available (pn_link_t *link)
	Get the available deliveries hint for a link. More...
pn_snd_settle_mode_t	pn_link_snd_settle_mode (pn_link_t *link)
	Get the local sender settle mode for a link. More...
pn_rcv_settle_mode_t	pn_link_rcv_settle_mode (pn_link_t *link)
	Get the local receiver settle mode for a link. More...
void	pn_link_set_snd_settle_mode (pn_link_t *link, pn_snd_settle_mode_t mode)
	Set the local sender settle mode for a link. More...
void	pn_link_set_rcv_settle_mode (pn_link_t *link, pn_rcv_settle_mode_t mode)
	Set the local receiver settle mode for a link. More...
pn_snd_settle_mode_t	pn_link_remote_snd_settle_mode (pn_link_t *link)
	Get the remote sender settle mode for a link. More...
pn_rcv_settle_mode_t	pn_link_remote_rcv_settle_mode (pn_link_t *link)
	Get the remote receiver settle mode for a link. More...
int	pn_link_unsettled (pn_link_t *link)
	Get the number of unsettled deliveries for a link. More...
pn_delivery_t *	pn_unsettled_head (pn_link_t *link)
	Get the first unsettled delivery for a link. More...
pn_delivery_t *	pn_unsettled_next (pn_delivery_t *delivery)
	Get the next unsettled delivery on a link. More...
void	pn_link_offered (pn_link_t *sender, int credit)
	Signal the availability of deliveries for a link. More...
ssize_t	pn_link_send (pn_link_t *sender, const char *bytes, size_t n)
	Send message data for the current delivery on a link. More...
void	pn_link_flow (pn_link_t *receiver, int credit)
	Grant credit for incoming deliveries on a receiver. More...
void	pn_link_drain (pn_link_t *receiver, int credit)
	Grant credit for incoming deliveries on a receiver, and set drain mode to true. More...
void	pn_link_set_drain (pn_link_t *receiver, bool drain)
	Set the drain mode on a link. More...
ssize_t	pn_link_recv (pn_link_t *receiver, char *bytes, size_t n)
	Receive message data for the current delivery on a link. More...
bool	pn_link_draining (pn_link_t *receiver)
	Check if a link is currently draining. More...
uint64_t	pn_link_max_message_size (pn_link_t *link)
	Unsettled API - Get the maximum message size for a link. More...
void	pn_link_set_max_message_size (pn_link_t *link, uint64_t size)
	Unsettled API - Set the maximum message size for a link. More...
uint64_t	pn_link_remote_max_message_size (pn_link_t *link)
	Unsettled API - Get the remote view of the maximum message size for a link. More...
pn_data_t *	pn_link_properties (pn_link_t *link)
	Access/modify the AMQP properties data for a link object. More...
pn_data_t *	pn_link_remote_properties (pn_link_t *link)
	Access the AMQP link properties supplied by the remote link endpoint. More...

Detailed Description

A channel for transferring messages.