Seconds since the Unix epoch is not a parameter that can be obtained
with strftime on Windows.

Closes #1908. Thanks to Danil intl.

This is a false positive, the conditions to trigger a NULL derefence
rely on argc changing value. However, this makes it impossible to go
wrong anyway.

Coverity Scan 1436868.

1436823
1436837
1436843
1432792
1436847
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1436866
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1436862
1436857
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511427
1431133
1436823
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1436929

Closes Coverity 1436829.

1436854
1436844

1302840
1353078
1431131
1431134
1431135
1436826
1436827
1436828
1436830
1436831
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1436867

Useful in case only the lib is needed.

Signed-off-by: Pierre Hallot <hallotpierre@gmail.com>

Prior to this, duplicate entries could be added to the sock hash, which caused an infinite loop. Only affects bridges with bad settings on startup, and only when compiled using WITH_ADNS=yes.

Closes #1897. Thanks to Rodolfo Ochoa.

Fixes eclipse/mosquitto#1904

If the broker rejects the connection, as opposed to the broker being
down, then there is no hope to establish a connection.  This adds a
status flag so we can signal to the loop that we should just exit.

Signed-off-by: Dan White <dan.white@valpo.edu>

Fixes eclipse/mosquitto#1899

In stdin line mode, mosquitto_pub will continue running and accepting
input even if/when/after publishing fails.  This condition is reached
when it first successfully establishes a connection and the server later
is unreachable.

Exiting with a non-zero exit code allows for much easier health
monitoring when used in a long-running pipe.

Signed-off-by: Dan White <dan.white@valpo.edu>