There is no exact equivalent of mkfifo for socket, i.e. there is no command that just creates a “hanging” socket. This is for historical reason: server’s function bind(), the one that creates a socket name/inode in the filesystem, fails if the name is already used. In other words, server cannot operate on a pre-existing socket. … Read more
Quite recently I stumbled upon a similar problem. I was shocked to find out that there are cases when this might not be possible. I dug up a comment from the creator of lsof (Vic Abell) where he pointed out that this depends heavily on unix socket implementation. Sometimes so called “endpoint” information for socket … Read more
Unix sockets are a little bit faster as you don’t have the tcp-overhead. If you realize this performance loss is a question of server load. If you don’t have very high server load you won’t recognize it. If you use Jails (FreeBSD) or some other virtualisation technology to separate the e.g. MySQL-Server from the Webserver, … Read more
In Linux and other *nixes, MySQL will assume you want to use a socket if you connect to the host “localhost” (which would be the default hostname). You can override this in 3 ways: 1) Specify a different hostname like 127.0.0.1 (mysql -h 127.0.0.1) or your server’s real hostname 2) Specify that you want to … Read more
Actually there is a way to kill a connection – killcx. They claim it works in any state of the connection (which I have not verified). You need to know the interface where communication happens though, it seems to assume eth0 by default. UPDATE: another solution is cutter which comes in some linux distros’ repositories.
A UNIX socket, AKA Unix Domain Socket, is an inter-process communication mechanism that allows bidirectional data exchange between processes running on the same machine. IP sockets (especially TCP/IP sockets) are a mechanism allowing communication between processes over the network. In some cases, you can use TCP/IP sockets to talk with processes running on the same … Read more