From: Kevin Ryde <user42@zip.com.au>
Subject: doc ipv4 address conversions
Date: Wed, 10 Sep 2003 10:23:53 +1000 [thread overview]
Message-ID: <87znhdqyna.fsf@zip.com.au> (raw)
I think these could be described under the ipv4 address section,
rather than just under "bind".
* posix.texi (Network Address Conversion): Describe numeric
representation in Guile. Add INADDR_LOOPBACK and INADDR_BROADCAST,
add commented-out INADDR_NONE.
Describing the number format doesn't give anything new away, since the
examples have implicitly shown it.
IPv4 Address Conversion
.......................
An IPv4 Internet address is a 4-byte value, represented in Guile as an
integer in network byte order (meaning the first byte is the most
significant in the number).
- Variable: INADDR_LOOPBACK
The address of the local host using the loopback device, ie.
`127.0.0.1'.
- Variable: INADDR_BROADCAST
The broadcast address on the local network.
@c INADDR_NONE is defined in the code, but serves no purpose.
@c inet_addr() returns it as an error indication, but that function
@c isn't provided, for the good reason that inet_aton() does the same
@c job and gives an unambiguous error indication. (INADDR_NONE is a
@c valid 4-byte value, in glibc it's the same as INADDR_BROADCAST.)
@c
@c @defvar INADDR_NONE
@c No address.
@c @end defvar
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