Datagram Unix socket doesn't work

[lvu]

_do_connect() fails if socket_type is "udp" and path is specified instead of host, port

In this case, a UDP socket is created, and then its :connect() method is called, but there is no such method, so attempt to call method 'connect' (a nil value) error is thrown.

A simple fix is here: #35

[flisky]

see #20，almost 1 years old.

[lvu]

You mean nobody cares anymore? :(

[idanga]

No reason to use udp over UDS.
https://stackoverflow.com/questions/13953912/difference-between-unix-domain-stream-and-datagram-sockets

[JimmyBaize]

No reason to use udp over UDS.
https://stackoverflow.com/questions/13953912/difference-between-unix-domain-stream-and-datagram-sockets

But imuxsock from rsyslog only support udp UDS.