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We already had the counters. But we did not entirely handle
counter wrap, especially in related to 'iow' (Inform On Wrap).
There was also no way to get to the counter values, so a socket
specific info function was implemented (piggy back on the existing
"global" info function). And since, we have it, we also add
other info in the returned map (number of readers, writers and
acceptors).
OTP-15818
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Add a command function to the socket API.
Currently only used for changing global debug.
OTP-15817
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Corrected various issues and added missing stuff.
Default protocol is now indicated with the atom 'default'
instead of the atom 'null'. Also let the underlying OS
decide what protocol is actually the default protocol.
OTP-15822
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Make use of the new select functions; enif_select_[read|write],
for read and write select. These functions allows us to construct
the select message ourseves:
{'$socket', Socket, select, Ref}
This is in preparations for when we introduce the 'nowait'
(or something similar) value for the timeout argument (in accept,
read and write funcions).
It also solves (we hope) the term leakage problems (it was difficult
to free the environment when there was only one/socket).
OTP-15496
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Firstly, make sure socket (and own) options manipulations
are safe by adding a mutex that we take in the setopt and
getopt functions.
Secondly, change type prefix of various types from
'Socket' to 'ESock' (for instance; SocketDescriptor ->
ESockDescriptor).
OTP-15496
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Replace the won function for pid compare with the
(new) enif_compare_pids function.
OTP-15565
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Remove own function to make monitor printable (was a hack)
and make use of the new enif_make_monitor_term instead.
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Make use of macro concat magic to simplify declarations.
OTP-15565
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Better handling of socket close. The 'closeRef' needed
its own environment to make if work in both cases (both
called and scheduled).
Also Introduced the enif select wrapper functions (read,
write, stop and cancel). Also add error handling at every
time one of these functions are called.
OTP-14831
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Previously the "message interface" between the functions in
socket.erl and the nif-code (socket_nif.c) was "ad hoc".
This has now been changed so that we have a unified message
{'$socket', SockRef | undefined, Tag, Info}
This also has the added advantage of preparing the code for
when we start using the new select-fucntions (with which
its possible to specify your own message). This will be used
in order to get around our eterm "leak" (we will use a simple
counter, maintained in the nif, instead of the [Recv|Send|Acc]Ref
we generate in the erlang code today.
OTP-14831
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Running valgrind, found a couple of cases when allocated
binaries where not released. Mostly when the recv failed
for some reason.
Also clear and free the environment associated with the
socket (resource) (in the _dtor callback function).
OTP-14831
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bmk/20180918/nififying_inet/OTP-14831
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Fixed a number of issues regarding monitor handling.
Monitors are now wrapped in its own type (ESockMonitor).
This is hopefully temporary!
The reason for this is that there is no way to "initialize"
a monitor after a demonitor. This could mean that after a
successful demonitor, you could still get a down-callback,
and thenh compare with, for instance, ctrlMOn field and get
a match, even though it was just (successfully) demonitor'ed.
To make debugging easier, the monitor and demonitor calls
are now wrapped in their own functions, with debug printouts
before and in case of failure, also after the actual calls
Also, fixed a number of problems with cancel, where monitors
where left still active after cleaning up current and active
reader, writer and acceptor.
OTP-14831
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"Completed" the socket options part of the supports function.
OTP-14831
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Add the options for level socket (full), ip and ipv6 to the
supports function.
OTP-14831
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Added the first three socket (level socket) options to the
supports function(s).
OTP-14831
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Before allowing setopt(Sock, opt, controlling_process, NewPid),
verify that the caller is actually the current controlling_process.
OTP-14831
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Added proper recv timeout handling.
Made use of the enif_select(mode = cancel) feature. Each
time a timeout expires, the "active" recv (the surrent reader
select) has to be cancelled. Not yet tested...something for
the new test suite...
Also, added support for getopt(controlling_pprocess) that,
for some reason, was not yet implemented.
OTP-14831
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Added processing or more cmsg headers (for more options).
Now (also) supports: socket:timestamp.
Also various fixes and cleanups.
For some reason calling getopt(Sock, 0, {13, int}) (or similar)
fails with badarg even though the nif-function (nif_getopt) actually
returns a valid value (for instance: {ok, 0}).
OTP-14831
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Added decoding of the "known" control message options: pktinfo,
recvtos, recvttl and recvorigdstaddr).
OTP-14831
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Added preliminary support for function recvmsg. At the moment
this only works on *nix (Windows has another function, WSARecvMsg,
which has a slightly different API).
Also we have "no" cmsg decode at the moment (just level and type).
OTP-14831
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Added support for socket level socket option RCVTIMEO and SNDTIMEO.
These are both a little strange, at least on linux. See the man
pages for more info.
OTP-14831
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Added support for the SCTP option ASSOCINFO.
This option is a bit tricky. As the underlying structure (sctp_assocparams)
contains the assoc_id, it begs the question what happens if this option
is fetched for:
* The own assoc (which means that we might have the assoc id in the
descriptor and can initiate that part of the struct accordningly).
* Another assoc: From assoc A asks for info with assoc_id set to
that of assoc B.
* The "owning" endpoint.
* Another endpoint (an endpoint to which the assoc does not belong).
So, if the user calls socket:[getopt|setopt] for an association socket,
shall we require that the assoc_id field is set to -1? Or not set at all
and therefor filled in automatically by the nif-code?
And, if the user calls socket:[getopt|setopt] for an endpoint socket,
shall we require that the assoc_id field is set to a valid id? Or shall
it not be allowed?
Questions, questions...
OTP-14831
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Its now possible to have multiple (simultaneous) acceptor
processes for the same listening socket.
OTP-14831
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The returned address info was supposed to be a map,
by was instead (still) a record.
OTP-14831
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Added doc for the net module.
Also some socket-nif cleanup.
OTP-14831
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Fixed handling of closed in the recv function.
We still need to properly handle when we get
0 bytes of data for other types ock sockets
then stream (its valid for dgram for instance).
OTP-14831
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Started to move the common stuff, such as common utility functions,
debug and encode / decode of basic types.
OTP-14831
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