This allows clients using mosquitto_want_write() to get accurate results.

Thanks to Allan Kobelansky.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=483979

Thanks to Steve Woods and Roman Bogus.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=484693
Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=479143

Fix in 1.4.3 was incomplete.

Thanks to Guido Hinderberger et al.

Fix possible memory leak if bridge using SSL attempts to connect to a
host that is not up.

Thanks to Ed Morris.

Thanks to Jan-Piet Mens.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=478917

If the socket pair is still opened on reconnect, close it before
creating it again (just like the state variables). Otherwise, these
sockets are leaked on multiple mosquitto_connect() calls.

Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

Thanks to Karl Palsson.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=475707

Thanks to Tyler Brandon.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=475807

Don't leak sockets when an outgoing bridge connection with multiple
addresses is rejected.

Thanks to Johnny Egeland.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=477571

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=470253


Also-by: Wun Yu <wuyun1984_1984@163.com>

Reduces memory usage and CPU usage.

Thanks to Guido Hinderberger, Martin Rauscher and Michael Hekel.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=468987

Change-Id: I3de322006623483cbf20218da071a9da5d7b2e2b
Signed-off-by: Anmol Sarma <me@anmolsarma.in>

Don't duplicate the increment when queueing.

Thanks to Joe McIlvain.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=474935

Fix handling of outgoing QoS>0 messages for bridges that could not be
sent because the bridge connection was down.

Change-Id: I39db613c8e75c1437b909de263df4f96a7f76880
Signed-off-by: Anmol Sarma <me@anmolsarma.in>

Signed-off-by: Anmol Sarma <me@anmolsarma.in>

Thanks to Jaime Yu.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=465438

Fix incorrect loop timeout being chosen when using the threaded
interface and keepalive = 0.

Thanks to Gianfranco Costamagna.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=471334

Thanks to Martin Rauscher.

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=470660