We are using SMS and window properties for IPC in 0.5 branch

Detailed design after some coding:

gnomenu_socket_new gnomenu_socket_is_alive gnomenu_socket_send gnomenu_socket_broadcast_by_name gnomenu_socket_shutdown gnomenu_socket_destroy gnomenu_socket_accept gnomenu_socket_connect

GnomenuSocket::data-arrival GnomenuSocket::connect-req GnomenuSocket::connected GnomenuSocket::shutdown

ACK = (ACK, source) DATA = (DATA, source data_bytes) CONNECT_ACK = (ACK, source, 0) SHUTDOWN = (SHUTDOWN, source ) BROADCAST = (BROADCAST, source )

BROADCAST buffer is held in the receiver, GNOMENU_BROADCAST_BUFFER DATA buffer is held in the sender, GNOMENU_SEND_BUFFER

Sender:

+ owns DATA buffer after it receives ACK and before it sends DATA + at the connection, before any send is called. + holds a FIFO queue of data buffers for to be send data, + when a ACK or CONNECT_ACK arrives:

if self->acks == 1; panic. if queue is not empty, release a data from the queue(self->acks --) else self->acks = 1.

+ when a send is called:

push data to the queue. if self->acks == 1 release a data from the queue.

Receiver:

+ sends CONNECT_ACK when the connection is established. + owns DATA buffer after it receives DATA and before it sends ACK. + when receives DATA, emit data-arrival signal, send a ACK.