Return to icmp.4 CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / man / man4

Annotation of 43BSDTahoe/man/man4/icmp.4, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1986 Regents of the University of California.
        !             2: .\" All rights reserved.
        !             3: .\"
        !             4: .\" Redistribution and use in source and binary forms are permitted
        !             5: .\" provided that the above copyright notice and this paragraph are
        !             6: .\" duplicated in all such forms and that any documentation,
        !             7: .\" advertising materials, and other materials related to such
        !             8: .\" distribution and use acknowledge that the software was developed
        !             9: .\" by the University of California, Berkeley.  The name of the
        !            10: .\" University may not be used to endorse or promote products derived
        !            11: .\" from this software without specific prior written permission.
        !            12: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            13: .\" IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            14: .\" WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            15: .\"
        !            16: .\"    @(#)icmp.4      6.3 (Berkeley) 7/9/88
        !            17: .\"
        !            18: .TH ICMP 4P "July 9, 1988"
        !            19: .UC 6
        !            20: .SH NAME
        !            21: icmp \- Internet Control Message Protocol
        !            22: .SH SYNOPSIS
        !            23: .B #include <sys/socket.h>
        !            24: .br
        !            25: .B #include <netinet/in.h>
        !            26: .PP
        !            27: .B s = socket(AF_INET, SOCK_RAW, proto);
        !            28: .SH DESCRIPTION
        !            29: ICMP is the error and control message protocol used
        !            30: by IP and the Internet protocol family.  It may be accessed
        !            31: through a \*(lqraw socket\*(rq for network monitoring
        !            32: and diagnostic functions.
        !            33: The
        !            34: .I proto
        !            35: parameter to the socket call to create an ICMP socket
        !            36: is obtained from
        !            37: .IR getprotobyname (3N).
        !            38: ICMP sockets are connectionless,
        !            39: and are normally used with the
        !            40: .I sendto 
        !            41: and
        !            42: .I recvfrom 
        !            43: calls, though the
        !            44: .IR connect (2)
        !            45: call may also be used to fix the destination for future
        !            46: packets (in which case the 
        !            47: .IR read (2)
        !            48: or
        !            49: .IR recv (2)
        !            50: and 
        !            51: .IR write (2)
        !            52: or
        !            53: .IR send (2)
        !            54: system calls may be used).
        !            55: .PP
        !            56: Outgoing packets automatically have an IP header prepended to
        !            57: them (based on the destination address).
        !            58: Incoming packets are received with the IP header and options intact.
        !            59: .SH DIAGNOSTICS
        !            60: A socket operation may fail with one of the following errors returned:
        !            61: .TP 15
        !            62: [EISCONN]
        !            63: when trying to establish a connection on a socket which
        !            64: already has one, or when trying to send a datagram with the destination
        !            65: address specified and the socket is already connected;
        !            66: .TP 15
        !            67: [ENOTCONN]
        !            68: when trying to send a datagram, but
        !            69: no destination address is specified, and the socket hasn't been
        !            70: connected;
        !            71: .TP 15
        !            72: [ENOBUFS]
        !            73: when the system runs out of memory for
        !            74: an internal data structure;
        !            75: .TP 15
        !            76: [EADDRNOTAVAIL]
        !            77: when an attempt is made to create a 
        !            78: socket with a network address for which no network interface
        !            79: exists.
        !            80: .SH SEE ALSO
        !            81: send(2), recv(2), intro(4N), inet(4F), ip(4P)

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.