Stubborn unicast
[The Rime communication stack]

The stubborn single-hop unicast primitive (stunicast) repeatedly sends a packet to a single-hop neighbor using the unicast primitive. More...

Files
file	stunicast.c
	Stubborn unicast.
file	stunicast.h
	Stubborn unicast header file.

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Detailed Description

The stubborn single-hop unicast primitive (stunicast) repeatedly sends a packet to a single-hop neighbor using the unicast primitive.

The stunicast primitive sends and resends the packet until an upper layer primitive or protocol cancels the transmission. While it is possible for applications and protocols that use Rime to use the stubborn single-hop unicast primitive directly, the stunicast primitive is primarily used by the reliable single-hop unicast (runicast) primitive.

Before the stunicast primitive sends a packet, it allocates a queue buffer, to which the application data and packet attributes is copied, and sets a timer. When the timer expires, the stunicast primitive copies the queue buffer to the Rime buffer and sends the packet using the unicast primitive. The stunicast primitive sets the number of retransmissions for a packet as a packet attribute on outgoing packets.

Channels

The stunicast module uses 1 channel.