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Top Forums Programming How detect TCP/IP socket shutdown when ethernet cable is disconnected Post 302436145 by jim mcnamara on Friday 9th of July 2010 09:53:47 AM
Old 07-09-2010
ping uses icmp, port 5813 (as I remember)

It is far easier simply to call popen() with a ping command ( [code]/usr/bin/ping [remote address] [code]), read the return code, than to try to rewrite ping.
 

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MACPING(1)						      General Commands Manual							MACPING(1)

NAME
macping - A tool for pinging other RouterOS or mactelnetd devices SYNOPSIS
mactelnet [options] <MAC-Address|hostname> DESCRIPTION
This tool enables you to ping other RouterOS or MAC-Telnetd enabled devices. You can ping either a hostname or a MAC address. If speci- fied, the hostname (identity) will be looked up via MNDP discovery. OPTIONS
These programs follow the usual GNU command line syntax. A summary of options is included below. -f Fast mode, do not wait before sending next ping request. The next ping will be sent immediately when the last ping is received. This cannot be used with -c 0 -s Specify the amount of bytes to send in each ping packet, up to ~1400 bytes. -c Number of packets to send before exiting. A value of 0 means unlimited packets and the tool must be exited with Control + C. -h Show summary of options. -v Show version of program. SEE ALSO
mndp(1), mactelnet(1), mactelnetd(1). AUTHOR
macping was written by Hakon Nessjoen <haakon.nessjoen@gmail.com>. This manual page was written by Hakon Nessjoen <haakon.nessjoen@gmail.com>, for the Debian project (and may be used by others). February 27, 2011 MACPING(1)
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