Intro to RAET Programming¶

The first thing to cover is that RAET does not present a socket api, it presents, and queueing api, all messages in RAET are made available to via queues. This is the single most differentiating factor with RAET vs other networking libraries, instead of making a socket, a stack is created. Instead of calling send() or recv(), messages are placed on the stack to be sent and messages that are received appear on the stack.

Different kinds of stacks are also available, currently two stacks exist, the UDP stack, and the UXD stack. The UDP stack is used to communicate over udp sockets, and the UXD stack is used to communicate over Unix Domain Sockets.

The UDP stack runs a context for communicating over networks, while the UXD stack has contexts for communicating between processes.

from salt.transport.road.raet import stacking
from salt.transport.road.raet import estating

udp_stack = stacking.StackUdp(ha=('127.0.0.1', 7870))
r_estate = estating.Estate(stack=stack, name='foo', ha=('192.168.42.42', 7870))
msg = {'hello': 'world'}
udp_stack.transmit(msg, udp_stack.estates[r_estate.name])
udp_stack.serviceAll()