Solution: pass the local address by subclasses to create_engine

Solution: add monitor event socket option

Solution: pull up common code, introduce new create_engine function in base class

Solution: pull up

Solution: pull up tcp_connecter_t::rm_handle and use in all subclasses

Problem: process_plug, get_new_reconnect_ivl and add_reconnect_timer duplicated across subclasses of stream_connector_base_t

Solution: pull up to stream_connector_base_t

Solution: pull up to stream_connecter_base_t

Solution: extract common base class stream_connecter_base_t

Solution: replace by checks against valid value of _handle

Solution: rename to _reconnect_timer_started

Solution: add underscore prefix to data members

* Problem: connecter classes do not handle ZMQ_RECONNECT_IVL of -1

Solution: Add guards to prevent a reconnect timer from starting if ZMQ_RECONNECT_IVL is -1
(Issue 3158)

Solution: fix it

* Problem: Still need to port over more files to VxWorks 6.x

Solution: Port more files to VxWorks 6.x

* Problem: Need to port over remaining files to VxWorks 6.x. Also remove POSIX thread dependency for VxWorks (because of priority inversion problem in POSIX mutexes with VxWorks 6.x processes)

Solution: Port over remaining files to VxWorks 6.x. Also removed POSIX thread dependency for VxWorks

* Problem: Needed to modify TCP, UDP, TIPC classes with #ifdefs to be compatible with VxWorks 6.x.

Solution:  Modify TCP, UDP, TIPC classes with #ifdefs to be compatible with VxWorks 6.x

ZeroMQ currently supports location independent addressing using TIPC
Port Names with tipc://{type,instance}. This commits adds support for
connecting and binding using TIPC Port Identity addresses. To connect
using Port Identities the expected format is tipc://<Z.C.N:Ref>, e.g.
"tipc://<1.2.3:123123>". To bind using TIPC Port Identities the expected
format is "tipc://<*>".

Solution: applied clang-format

Solution: update to 2016

Of course people still "can" distributed the sources under the
LGPLv3. However we provide COPYING.LESSER with additional grants.

Solution: specify these grants in the header of each source file.

Solution: update for 2015

Fixes #1320

- corporate copyright statements sit in AUTHORS file

As TIPC transport for 0MQ will only work on post 3.8
Linux kernels where nonblocking connect was added,
we add AC_RUN test to check for this functionality.
Should the test fail, tipc is excluded from build/test.
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>

A ZeroMQ application can opt for TIPC based sockets
using the TIPC port name format:
zmq_bind(sb, "tipc://{type,lower,upper}");
zmq_connect(sc, "tipc://{type,inst}");

'type' is the service ID, and 'lower/upper' can be
used for service partitioning or basic load
balancing.

ZeroMQ TIPC transport requires a kernel >= 3.8
(nonblocking connect support for TIPC).
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>

- we need to switch to PLAIN according to options.mechanism
- we need to catch case when both peers are as-server (or neither is)
- and to use username/password from options, for client

This implements protocol handshake.
We still need to design and implement 1) API changes so a user
can set username and password, and 2) a mechanism for engine
to authenticate users.

Copyrights had become ads for Sustrik's corporate sponsors, going against the original
agreement to share copyrights with the community (that agreement was: one line stating
iMatix copyright + one reference to AUTHORS file). The proliferation of corporate ads
is also unfair to the many individual authors. I've removed ALL corporate title from
the source files so the copyright statements can now be centralized in AUTHORS and
source files can be properly updated on an annual basis.

Copy monitor specific event endpoints to event messages as the engine etc. can be released at anytime

Significantly reworked the monitoring infrastructure with a more granular per socket API and to play well with monitoring endpoints in application threads

This also fixes a bug in tcp_connecter and tcp_listener, which
generated the event not when they failed to close the socket but
when the succeed to close it.

Calling close () when the underlying socket is invalid
triggers an assertion failure.

Make start_connecting () to have singe exit point.

The patch is meant to make the code easier to understand.
The 'wait' attribute is replaced by 'delayed_start'
and 'timer_started' attributes. The former is constant and
is initialized in the constructor. The latter is a flag
reflecting whether a timer has been started and changes during
the lifetime of the object.

This reverts commit dde69fb9.

This reverts commit 7b105865, reversing
changes made to 33459029.

Once the object has been terminated, it is unsafe for this object
to refer to its parent.

The bug was responsible for occasional
test_shutdown_stress failures.