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Author SHA1 Message Date
Gustavo Sverzut Barbieri e7df1a7483 efl.net: socket, server and dialer for TCP.
Efl.Net.Server defines how to accept new connections, doing the
bind(), listen() and accept() for protocols such as TCP.

Efl.Net.Dialer defines to to reach a server.

Both are based on Efl.Net.Socket as communication interface that is
based on Efl.Io.Reader, Efl.Io.Writer and Efl.Io.Closer, thus being
usable with code such as Efl.Io.Copier.

The Server will emit an event "client,add" with the established
Socket, which is a child and can be closed by both the server or the
user.

The Dialer extends the Socket and allows for creating one given an
address, that will be resolved and connected.

TCP is the initial implementation so we an validate the
interfaces. UDP, Unix-Local and SSL will come later as derivate
classes.

The examples are documented and should cover the basic principles:

 - efl_io_copier_example can accept "tcp://IP:PORT" and will work as a
   "netcat", can send data from socket, file or stdin to a socket,
   file, stdout or stderr.

 - efl_net_server_example listens for connections and can either reply
   "Hello World!" and take some data or work as an echo-server,
   looping back all received data to the user.

More complex interactions that require a "chat" between client and
server will be covered with new classes later, such as a queue that
empties itself once data is read.
2016-08-22 18:25:14 -03:00