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* lib/ping.rb, lib/readbytes.rb: removed

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14283 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2007-12-17 21:05:25 +00:00
parent 51b0310930
commit 97591e82d9
4 changed files with 2 additions and 108 deletions

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@ -2,6 +2,8 @@ Tue Dec 18 05:54:26 2007 Yukihiro Matsumoto <matz@ruby-lang.org>
* lib/Env.rb, lib/base64.rb, lib/importenv.rb, lib/eregex.rb: removed.
* lib/ping.rb, lib/readbytes.rb: removed
Tue Dec 18 02:30:56 2007 Nobuyoshi Nakada <nobu@ruby-lang.org>
* configure.in (BUILTIN_ENCS): removed.

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@ -1,7 +1,6 @@
English.rb lets Perl'ish global variables have English names
README this file
benchmark.rb a benchmark utility
cgi-lib.rb simple CGI support library (old style)
cgi.rb CGI support library
cgi/session.rb CGI session class
complex.rb complex number support
@ -45,7 +44,6 @@ ostruct.rb python style object
parsearg.rb argument parser using getopts
parsedate.rb parses date string (obsolete)
pathname.rb Object-Oriented Pathname Class
ping.rb checks whether host is up, using TCP echo.
pp.rb pretty print objects
prettyprint.rb pretty printing algorithm
profile.rb runs ruby profiler
@ -54,7 +52,6 @@ pstore.rb persistent object strage using marshal
racc/parser.rb racc (Ruby yACC) runtime
rational.rb rational number support
rdoc source-code documentation tool
readbytes.rb define IO#readbytes
resolv-replace.rb replace Socket DNS by resolve.rb
resolv.rb DNS resolver in Ruby
rexml an XML parser for Ruby, in Ruby

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@ -1,64 +0,0 @@
#
# = ping.rb: Check a host for upness
#
# Author:: Yukihiro Matsumoto
# Documentation:: Konrad Meyer
#
# Performs the function of the basic network testing tool, ping.
# See: Ping.
#
require 'timeout'
require "socket"
#
# Ping contains routines to test for the reachability of remote hosts.
# Currently the only routine implemented is pingecho().
#
# Ping.pingecho uses a TCP echo (not an ICMP echo) to determine if the
# remote host is reachable. This is usually adequate to tell that a remote
# host is available to telnet, ftp, or ssh to.
#
# Warning: Ping.pingecho may block for a long time if DNS resolution is
# slow. Requiring 'resolv-replace' allows non-blocking name resolution.
#
# Usage:
#
# require 'ping'
#
# puts "'jimmy' is alive and kicking" if Ping.pingecho('jimmy', 10)
#
module Ping
#
# Return true if we can open a connection to the hostname or IP address
# +host+ on port +service+ (which defaults to the "echo" port) waiting up
# to +timeout+ seconds.
#
# Example:
#
# require 'ping'
#
# Ping.pingecho "google.com", 10, 80
#
def pingecho(host, timeout=5, service="echo")
begin
timeout(timeout) do
s = TCPSocket.new(host, service)
s.close
end
rescue Errno::ECONNREFUSED
return true
rescue Timeout::Error, StandardError
return false
end
return true
end
module_function :pingecho
end
if $0 == __FILE__
host = ARGV[0]
host ||= "localhost"
printf("%s alive? - %s\n", host, Ping::pingecho(host, 5))
end

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@ -1,41 +0,0 @@
# TruncatedDataError is raised when IO#readbytes fails to read enough data.
class TruncatedDataError<IOError
def initialize(mesg, data) # :nodoc:
@data = data
super(mesg)
end
# The read portion of an IO#readbytes attempt.
attr_reader :data
end
class IO
# Reads exactly +n+ bytes.
#
# If the data read is nil an EOFError is raised.
#
# If the data read is too short a TruncatedDataError is raised and the read
# data is obtainable via its #data method.
def readbytes(n)
str = read(n)
if str == nil
raise EOFError, "End of file reached"
end
if str.size < n
raise TruncatedDataError.new("data truncated", str)
end
str
end
end
if __FILE__ == $0
begin
loop do
print STDIN.readbytes(6)
end
rescue TruncatedDataError
p $!.data
raise
end
end