Update of /cvsroot/jungerl/jungerl/lib/unixdom_drv
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv24105
LICENSE Makefile README
Initial checkin of unixdom_drv (based on EDTK-generated code).
--- NEW FILE: LICENSE ---
Copyright (c) 2003, Scott Lystig Fritchie, <slfritchie@...>
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
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Neither the name of Mr. Fritchie nor the names of any other
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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--- NEW FILE: Makefile ---
--- NEW FILE: README ---
This is a very incomplete reimplementation of the UNIX domain socket driver
that I wrote and added to the http://www.erlang.org "User Contributions"
There are two things that this driver can do that the original UNIX
domain socket driver cannot:
1. It has a "getfd" call so that Erlang can discover the
underlying UNIX file descriptor for the socket.
2. Has the ability to use BSD-style file descriptor passing
to pass file descriptors between Erlang nodes running
on the same machine.
The file descriptor passing has been tested under Linux and FreeBSD. It
should work under Solaris (minor tweaking perhaps necessary?) and any other
platform that supports BSD-style file descriptor passing over UNIX domain
To test the file descriptor passing, to the following:
% make ... GNU make is required, sorry!
% cd test
% make test ... optional, but shows some instructions
% erl -pz ../ebin
2> unixdom_test:tcp_listen(5555, "/tmp/sock").
On machine-A, but in another login session:
% cd test
% erl -pz ../ebin
[... some time later ...]
TCP socket fd 8 received, looping now
% telnet machine-A 5555
Connected to machine-A
Escape character is '^]'.
Hello, there! Please type some stuff:
If someone would like to fix this driver up, they are more than welcome to!
I have only done enough to implement the file descriptor passing. My
intention was to create a minimal implementation this time, relying on
using gen_tcp:fdopen() or prim_inet:fdopen() to create a full-featured
socket port, rather than trying to re-invent the wheel (including all of
the gadgets, like packet encoding types, that the inets driver currently
23 February 2004