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28 .\" @(#)socketpair.2 8.1 (Berkeley) 6/4/93
31 .Dd September 11, 2013
36 .Nd create a pair of connected sockets
43 .Fn socketpair "int fd" "int type" "int protocol" "int *sv"
47 system call creates an unnamed pair of connected sockets in
52 and using the optionally specified
54 The descriptors used in referencing the new sockets
59 The two sockets are indistinguishable.
67 argument apply to both descriptors.
71 The call succeeds unless:
74 Too many descriptors are in use by this process.
75 .It Bq Er EAFNOSUPPORT
76 The specified address family is not supported on this machine.
77 .It Bq Er EPROTONOSUPPORT
78 The specified protocol is not supported on this machine.
80 The specified protocol does not support creation of socket pairs.
84 does not specify a valid part of the
85 process address space.
95 system call appeared in
98 This call is currently implemented only for the