CODEWITHSUNDEEP
javapythonsockets
Robert
Robert

Reputation: 39

Does Python or Java support UNIX domain socket in abstract namespace?

Like this

abstract: an abstract socket address is distinguished by the fact that sun_path[0] is a null byte ('\0'). The socket's address in this namespace is given by the additional bytes in sun_path that are covered by the specified length of the address structure. (Null bytes in the name have no special significance.) The name has no connection with filesystem pathnames. When the address of an abstract socket is returned by getsockname(2), getpeername(2), and accept(2), the returned addrlen is greater than sizeof(sa_family_t) (i.e., greater than 2), and the name of the socket is contained in the first (addrlen - sizeof(sa_family_t)) bytes of sun_path. The abstract socket namespace is a nonportable Linux extension.

I want to connect the socket which has been create in abstract namespace(@xxx or \0xxx).

Upvotes: 3

Views: 1302

Answers (1)

Matthew Hannigan
Matthew Hannigan

Reputation: 1586

Support for "Linux abstract socket namespace" has been in Python since version 2.5 2006.

That's according to the source and changelog. Misc/HISTORY (note: big file)

Patch #1062014: AF_UNIX sockets under Linux have a special abstract namespace that is now fully supported.

It's not mentioned in the Python2 docs but is explicitly mentioned in the latest Python 3 socket docs

Have you tried it under Python2?

As for Java, it doesn't even support AF_UNIX sockets directly; it requires JNI. There are many implementations (search around) but you will almost certainly need to do some C development to get Linux abstract namespace support.

You might try Jtux It's a complete UNIX api library for Java and of course includes AF_UNIX sockets.

Upvotes: 2

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