* doco socketpair
@ 2003-08-25 22:02 Kevin Ryde
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From: Kevin Ryde @ 2003-08-25 22:02 UTC (permalink / raw)
* posix.texi (Network Sockets and Communication): In socketpair,
clarify the return is a pair with ports in car and cdr, note
connection is full duplex, refer to `socket' for parameters, refer
to PF_UNIX rather than AF_UNIX.
The glibc manual has AF_LOCAL (the same as AF_UNIX) in its description
of socketpair, but if I understand this stuff it's PF_UNIX (or
PF_LOCAL) which is correct for a protocol namespace (as opposed to an
address format). I guess the two are the same value anyway, so it
doesn't matter.
- Scheme Procedure: socketpair family style proto
- C Function: scm_socketpair (family, style, proto)
Return a pair, the `car' and `cdr' of which are two unnamed socket
ports connected to each other. The connection is full-duplex, so
data can be transferred in either direction between the two.
FAMILY, STYLE and PROTO are as per `socket' above. But many
systems only support socket pairs in the `PF_UNIX' family. Zero
is likely to be the only meaningful value for PROTO.
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