This is a string parser, serializer and asynchronous resolver.
It's purpose is to convert to and from the strings we use in our
dialers and servers, such as "127.0.0.1:1234" or "[::1]:1234",
properties allow to check the family, port, address bytes (slice) and
even get a struct sockaddr pointer to use with bind()/connect() in
outside code.
It will also offer some utilities present in netinet/in.h in an easy
to use way, after all IN6_IS_ADDR_LOOPBACK() works one way, while
there is no IN_LOOPBACK and comparing with INADDR_LOOPBACK will lead
to errors since it's in network order.
Last but not least, it will do asynchronous resolve of host and port
names using an internal thread and getaddrinfo(). The results are
delivered using a Future with an array of objects.
add a new -t/--type=tcp+ssl, there you can send "Upgrade: SSL\n" to
request the server to start the handshake.
This can be paired with the ecore_con_client_example, there you can
type:
Upgrade: SSL\n
STARTTLS\n
The second is a dialer local command to upgrade it to SSL, matching
what the server expects.
The example now offers --type=tcp+ssl, in this case it won't send a
"hello!" message to avoid messing with the handshake. Once the client
(dialer) receives the user command STARTTLS
(--starttls-local-command), then it will upgrade the connection.
Usually in real life you need to send some command to server, such as
upgrade, STARTTLS and then upgrade... unless you connect to a SSL-only
server (ie: ecore_con_server_example --type=ssl).
allow to not verify server certificate or hostname, so we can test
with local, self-signed certificates.
Also print errors, so we can say that the server handshake failed.
Instead of a single SSL connection, allow for local, tcp and udp,
optional flush and delete-after-write (--single-message) and echo
mode.
Very similar to ecore_ipc_server_example.c
Instead of a single SSL connection, allow for local, tcp and udp,
optional flush and delete-after-write (--single-message).
Very similar to ecore_ipc_client_example.c
Summary:
Since eina_model was dropped some years ago.
Also a few other points where related stuff is just commented out.
Reviewers: iscaro, barbieri
Reviewed By: barbieri
Subscribers: cedric, jpeg
Differential Revision: https://phab.enlightenment.org/D4442
The low level I/O primitives are powerful but adds some complexity to
use, for bi-directional streaming communication one ends creating two
Efl.Io.Queue and two Efl.Io.Copier to pipe data to socket when it can
operate.
Then encapsulate the socket using the new Efl.Io.Buffered_Stream, this
will allow the socket, be a dialer or a server client, to be operated
as a single handle that internally carries about the buffering for
you.
As one can see in the examples, compared to their "manual"
alternatives they are very easy to use, ressembling
Ecore_Con_Server/Ecore_Con_Client, but also offers line-based
delimiters and the possibility to let the socket to handle queueing
for you in case you received partial messages (just do not
read/clear/discard the received data).
Since all other efl.io objects are low-level, the recommended approach
is to use an efl.io.copier. However when dealing with in-memory,
bi-directional comms like talking to a socket, we always end with 2
queues, 2 copiers and the annoying setup that is being replicated in
ecore_ipc, efl_debug and so on.
This class is the base to make it simpler. Other classes such as
Efl.Net.Socket.Simple, Efl.Net.Dialer.Simple and Efl.Net.Server.Simple
will use it to provide simpler code to users.
I guess we can call EFL+EO Java now?
If the server is gone, immediately delete it, this exercises deleting
the server from inside its event.
Then, if the server was already deleted, do not do it again.
Also remove the shadow variable, keep only the global scope.
ecore_file_download() will refuse to download if file already exists,
then we must unlink DST_MIME as done with DST before we try to
download, otherwise it won't work on the second time.
In commit 5929f0311d this was removed. While
the commits intend was to remove the cxx variant of this example only.
Bring this back so examples are building again.
Since this code will be required in many use cases
of the multiseat feature, including examples.
Reviewers: iscaro, barbieri, cedric
Subscribers: jpeg
Differential Revision: https://phab.enlightenment.org/D4385
These are objects to allow control of networking devices
(efl_net_control) as well as an application to request for
connectivity (efl_net_session).
They are loosely based on ConnMan.org, which we already use in
Enlightenment Window Manager via DBus access with Eldbus. However they
do not map 1:1 as the goal was to expose a viable subset of controls
but in a simple and general way, thus nome strings were converted to
enums, some arrays of strings were converted to bitwise flags, some
names were made more general, such as "service" was turned into
"access point" so it doesn't generate confusion with other "network
services" (ie: http server), or "favorite" that was renamed to
"remembered". Some behavior are slightly different (yet able to be
implemented on top), such as "Service.MoveBefore" and "MoveAfter" were
converted to a numeric "priority", calculated from service's list
index, changing the priority will reoder the list and thus generate
the MoveBefore and MoveAfter DBus commands.
ConnMan was chosen not only because we already use it, but because its
DBus API is sane and simple, with the server doing almost all that we
need. This is visible in the efl_net_session, which is completely done
in the server and do not require any extra work on our side -- aside
from talking DBus and converting to Eo, which is a major work :-D
NOTE: ConnMan doesn't use FreeDesktop.Org DBus interfaces such as
Properties and ObjectManager, thus we cannot use
eldbus_model_object.
There are two examples added:
- efl_net_session_example: monitors the connection available for an
application and try to connect. You need a connman compiled with
session_policy_local and a configuration file explained in
https://github.com/aldebaran/connman/blob/master/doc/session-policy-format.txt
to get a connection if nothing is connected. Otherwise it will just
monitor the connectivity state.
- efl_net_control_example: monitors, plays the agent and configure
the network details. It can enable/disable technologies, connect to
access points (services) and configure them. It's quite extensive
as allows testing all of ConnMan's DBus API except P2P (Peers).
Summary:
Ecore Evas VNC: Properly unregister the region push hook callback.
This callback must be unregistered when the VNC server is deleted.
Reviewers: bdilly, barbieri, cedric
Subscribers: cedric, jpeg
Differential Revision: https://phab.enlightenment.org/D4384
Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>
it was using old API, updated, but still doesn't work as expected,
lots of warnings from children being left alive, all proxies are
reporting no properties...
when model dies, all children proxies should die as well, otherwise we
get on console:
```
CRI:eldbus lib/eldbus/eldbus_core.c:215 eldbus_shutdown() Alive TYPE_SYSTEM connection
ERR:eldbus lib/eldbus/eldbus_core.c:175 print_live_connection() conn=0x8219230 alive object=0x8276d50 net.connman of bus=net.connman
...
```
Also, all proxies are reporting no properties "(no properties yet)",
likely they are missing to fetch such... even if "--wait" to let it
run, no asynchronous properties are delivered, at least not triggering
EFL_MODEL_EVENT_PROPERTIES_CHANGED.
in the previous commit we're manually upgrading an existing TCP socket
to SSL. It is desired since some protocols need to negotiate, like
STARTTLS and the likes
Now we offer 2 classes that does autostart SSL once the socket is
ready.
This introduces AF_UNIX server and dialer, these are not available on
Windows as in that platform we'll create a custom class for native
'local' communication.
In the future we can add a wrapper class Efl.Net.Local that will use
the class for each platform, but won't expose its details.
For instance, if we ever expose 'credentials' (which I didn't because
they are not portable), then it doesn't make sense to try to match
that on Windows. The 'Efl.Net.Local' would just stick to the basics:
Reader, Writer and Closer APIs.
now that we have a 'bind', let's use the given address as bind and
dial to `0.0.0.0` or `::`. This allows the dialer to receive data at
the given address and make the example useful.
This was a huge work, but now UDP is usable as seen in the examples.
Instead of relying on 'connect()', just do 'sendto()' and 'recvfrom()'
as they are universal. Multicast address can only be connected in
IPv4, IPv6 wasn't working and I'm not sure the IPv4 is portable to
other platforms.
Dialer will auto-join multicast groups is the dialed address is
one. Multicast properties such as time to live (hops) and loopback can
be configured. When joining multicast groups, the local
address/interface can be configured by 'IP@IFACE' format, with
'@IFACE' being optional.
Dialers will now auto-bind, so it can receive data as dialers are
expected to be bi-directional. One can manually specify the binding
address if there is such need.
Since datagrams must be read in their full size, otherwise the
remaining bits are dropped, expose next_datagram_size_query() in both
Efl.Net.Socket.Udp and Efl.Net.Server.Udp.Client.
To finalize UDP for real we need to introduce an 'Efl_Net_Ip_Address'
structure to serve as both IPv4 and IPv6 and expose 'sendto()' and
'recvfrom()'. These will come later as this commit is already too big.
Instead of using 'bool', which requires a parameter to be useful, make
them toggle of the default value.
Adapt names to make more sense in that context.
This is handful to error the copier with ETIMEDOUT if there are no
reads or writes in the given amount of time.
Since copiers are usable to download data or handle network clients,
it's easy to set a timeout and disconnect, let's say UDP clients that
are gone.
This is the initial UDP server that works similarly to the TCP one,
however under the hood it's widely different since the socket is
reused for all "clients", thus needs a new Efl.Net.Server.Udp.Client
(Efl.Net.Socket) as Efl.Net.Socket.Udp exposes the fd and options such
as 'cork', which would interfere in other clients.
The main socket will read the packets and find an existing client to
feed it. If no client exists, then it will create one if not overr
limit. Since there is no kernel-queuing as done by listen()/accept(),
the 'no reject' case will just accept the client anyway.
Next commits will improve UDP server handling with some advanced
features:
- join multicast groups
- bind to a specific interface (SO_BINDTODEVICE)
- block packets going out of local network (SO_DONTROUTE)
- specify priorities (SO_PRIORITY)
instead of blindly reading and writing, which can lead to hangs due no
server, let's use can_read and can_write to do the operations, this
won't let us believe we can read when we can't.
it's also the recommended approach, so let's show that in the examples
so users don't copy&paste incorrect stuff :-)
Sometimes we want to handle both IPv4 and IPv6 in the same socket,
instead of spawning 2 servers, one for each protocol. That is achieved
by means of disabling IPV6_V6ONLY socket option, present in most
recent platforms.
Like existing ecore_con code, this does not use SOCKSv5 UDP
proxy. It's kinda cumbersome to add since requires a keep alive TCP
connection to the server, a second UDP channel and framing around the
original UDP frame.
Added UDP_CORK (if present) to match TCP_UDP present in TCP sockets,
this allows one to execute multiple write() calls that will result in
a single datagram, generated when CORK becomes FALSE again.
The efl_io_copier_example.c now accepts this as output. There is no
input UDP as there is no way to notify the server of a connection
(since such thing doesn't exit), usually servers react after a
datagram is received, replying to the source.
Similarly to group_color_set, group_clip_[un]set should not
exist and should be a result of efl_super and inheritance.
This patch also removes clip_unset from the EO API and keeps
only clip_set(NULL). The reason is that it will avoid bad overrides
of clip_unset() vs. clip_unset(NULL). This also simplifies the code
a bit. Ideally we should be able to reintroduce clip_unset in EO
if we can have a "@final" tag (like java's final keyword), to
prevent overrides.
Remove codegen_example_generated.h from codegen_example_SOURCES
and let it only on nodist_codegen_example_SOURCES and
on BUILT_SOURCES.
Also add dependency between codegen_example.c
and codegen_example_generated.h since it's required
to compile.
Avoid the following build error:
CODEGEN codegen_example_generated.c
codegen_example.c:26:39: fatal error: codegen_example_generated.h:
No such file or directory
compilation terminated.
Makefile:4960: recipe for target 'codegen_example.o' failed
Fix missing dependency.
Get rid of the following error:
/usr/bin/ld: ecore_evas_vnc.o: undefined reference
to symbol 'ECORE_EVENT_MOUSE_BUTTON_UP'
src/lib/ecore_input/.libs/libecore_input.so.1: error adding symbols:
DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:2306: recipe for target 'ecore_evas_vnc' failed
It has been discussed on the ML (thread: "[RFC] rename efl_self") and
IRC, and has been decided we should rename it to this in order to avoid
confusion with the already established meaning of self which is very
similar to what we were using it for, but didn't have complete overlap.
Kudos to Marcel Hollerbach for initiating the discussion and
fighting for it until he convinced a significant mass. :)
This commit breaks API, and depending on compiler potentially ABI.
@feature
The Efl.Net.Dialer.Websocket is just like other Efl.Net.Dialers: you
can dial, you can close, monitor connected/address resolved and so
on. And you can use WebSocket primitives and events such as
text_send(), binary_send(), ping() and close_request() (since
WebSockets use a close process where you should state a close
reason). See efl_net_dialer_websocket_example.c
Even if WebSocket is a message-based protocol (like "packets" from
UDP), you can use efl_net_dialer_websocket_streaming_mode_set() to
tell it to handle text or binary messages as a stream. Then all the
Efl.Io.Reader and Efl.Io.Writer APIs work as expected, see
efl_io_copier_example.c updates.
This adds support for distance, pressure, tilt and twist.
Not entirely sure if normalized & raw (x,y) should be exposed
in the eo interface. Also not sure what to do with tilt_x/y
(as used by libinput) or touch/tool width "major/minor" vs.
radius x/y.
Add debug logs in the example, including the distance.
I can't test most of these values due to a lack of compatible
hardware, but the most basic features seem to work :)
The use of low-level interfaces such as Efl.Io.Reader and
Efl.Io.Writer are not that user-friendly as they can handle partial
data.
Classes such as Efl.Io.Copier makes them easy to use, but they need a
reader (source) or writer (destination) and in our examples we used
fixed buffers or some existing streams (stdin/stdout/stderr,
networking...).
However, if interactively we need to produce some data to be sent,
such as implementing some networking protocols, we'd have to write our
own Efl.Io.Reader and Efl.Io.Writer classes to handle the buffering.
Not anymore! With Efl.Io.Queue you can write stuff to it and it will
buffer to memory. Once stuff is read, it will automatically remove
those bytes from buffer.
so efreet mime was loading a bunch of mime type info files, parsing
them on startup and allocating memory to store all this mime info -
globs, mimetype strings and more. all a big waste of memory as its
allocated on the heap per process where its the SAME data files loaded
every time.
so make an efreet mime cache file and a tool to create it from mime
files. mmap this file with all the hashes/strings in it so all that
data is mmaped once in memory and shared between all processes and it
is only paged in on demand - as actually read/needed so if your
process doesnt need to know about mime stuff.. it wont touch it anyway.
this saves about 240-300k or so of memory in my tests. this has not
covered the mime MAGIC files which still consume memory and are on the
heap. this is more complex so it will take more time to come up with a
nice file format for the data that is nicely mmaped etc.
@optimize
This class implements the Efl.Net.Dialer interface using libcurl to
perform HTTP requests. That means it's an Efl.Net.Dialer,
Efl.Net.Socket, Efl.Io.Reader, Efl.Io.Writer and Efl.Io.Closer, thus
being usable with Efl.Io.Copier as demonstrated in the
efl_io_copier_example.c
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.
These interfaces allows generic operations on objects that can store
or provide data, such as a file or a buffer.
With well defined interfaces and events we can create code such as
Efl.Io.Copier, that will link a source with a destination and
progressively copy data as they appear.
Only perform the single value/return type substitution on properties if the
void return type is implicit (i.e. NULL return from function_return_type_get),
following the eolian-C implementation as we use the generated headers.
Also update example after Eo-Efl changes.
Gustavo Sverzut Barbieri
Bruno Dilly
Vitalii Vorobiov
Felipe Magno de Almeida
Cedric Bail
Stefan Schmidt
Guilherme Iscaro
Jean-Philippe Andre
Lauro Moura
Subhransu Mohanty
Hermet Park
Tom Hacohen
Carsten Haitzler