Hi,

I was playing around with ngx_lua and its socket API, which is built
on top of nginx functionality. The API supports unix domain sockets
but not in the abstract namespace, at least not officially. When I
tried specifying an abstract address I found it didn't work. I tracked
it down to two calls to ngx_cpystrn() in
core/ngx_inet.c:ngx_parse_unix_domain_url(). That function gets
confused by the leading '\0' in an abstract namespace address.
Changing it to ngx_memcpy() fixes this and then everything works.

I attached a patch agains nginx 1.2.3. The fix seems trivial but this
is my first look into the nginx internals so I don't know whether
there are unwanted side effects from this change. Feedback welcome.

Regards,

Dirk F.
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