go语言中的Unix域套接字名称(Unix domain socket name in go language)

go语言中的Unix域套接字名称(Unix domain socket name in go language)

go中的net包提供了这个功能：

func ResolveUnixAddr(net, addr string) (*UnixAddr, error)

字符串参数net给出网络名称“unix”，“unixgram”或​​“unixpacket”。

我猜网络名称的含义为：

unixgram ：作为socket（）函数中的类型SOCK_DGRAM，由网络包中的ListenPacket（）使用。

unixpacket ：作为socket（）函数中的类型SOCK_STREAM，由NET（包）中的Listen（）使用。

unix ：要么

我对吗？

The net package in go provides this function:

func ResolveUnixAddr(net, addr string) (*UnixAddr, error)

The string parameter net gives the network name, "unix", "unixgram" or "unixpacket".

I guess the the network name's meaning as:

unixgram: as type SOCK_DGRAM in socket() function, used by ListenPacket() in net package.

unixpacket: as type SOCK_STREAM in socket() function, used by Listen() in net package.

unix: either

Am I right?

最满意答案

查看net/unixsock_posix.go中的unixSocket函数，我们得到：

var sotype int switch net { case "unix": sotype = syscall.SOCK_STREAM case "unixgram": sotype = syscall.SOCK_DGRAM case "unixpacket": sotype = syscall.SOCK_SEQPACKET default: return nil, UnknownNetworkError(net) }

所以你说unixgram是一个数据报套接字是正确的，但它是指向流类型套接字的unix ，而unixpacket指的是顺序数据包套接字（即数据与数据报套接字一样在数据包中发送，但它们按顺序传递）。

Looking at the unixSocket function in net/unixsock_posix.go, we have:

var sotype int switch net { case "unix": sotype = syscall.SOCK_STREAM case "unixgram": sotype = syscall.SOCK_DGRAM case "unixpacket": sotype = syscall.SOCK_SEQPACKET default: return nil, UnknownNetworkError(net) }

So you're right about unixgram being a datagram socket, but it is unix that refers to the the stream type socket and unixpacket refers to a sequential packet socket (i.e. data is sent in packets as with datagram sockets, but they are delivered in order).