Sha256: 77f2692bb3f1511fca539c7082e0af644fcd6af7d20ac3d4e9ede6ed1c77b7c8
Contents?: true
Size: 1.82 KB
Versions: 29
Compression:
Stored size: 1.82 KB
Contents
# encoding: ascii-8bit
# Copyright 2022 Ball Aerospace & Technologies Corp.
# All Rights Reserved.
#
# This program is free software; you can modify and/or redistribute it
# under the terms of the GNU Affero General Public License
# as published by the Free Software Foundation; version 3 with
# attribution addendums as found in the LICENSE.txt
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
# Modified by OpenC3, Inc.
# All changes Copyright 2022, OpenC3, Inc.
# All Rights Reserved
#
# This file may also be used under the terms of a commercial license
# if purchased from OpenC3, Inc.
# This file updates the Ruby SNMP gem for non-blocking sockets
# to work around potential process lockups.
#
# Known to work with SNMP Version 1.0.2
# Note requires SNMP Ruby Gem - gem install snmp
require 'snmp'
old_verbose = $VERBOSE; $VERBOSE = nil
module SNMP
class UDPTransport
def recv(max_bytes)
# Implement blocking using recvfrom_nonblock to prevent potential
# ruby thread deadlock
data, host_info = @socket.recvfrom_nonblock(max_bytes)
return data
rescue Errno::EAGAIN, Errno::EWOULDBLOCK
IO.fast_select([@socket])
retry
end
end
class UDPServerTransport
def recvfrom(max_bytes)
# Implement blocking using recvfrom_nonblock to prevent potential
# ruby thread deadlock
begin
data, host_info = @socket.recvfrom_nonblock(max_bytes)
rescue Errno::EAGAIN, Errno::EWOULDBLOCK
IO.fast_select([@socket])
retry
end
flags, host_port, host_name, host_ip = host_info
return data, host_ip, host_port
end
end
end
$VERBOSE = old_verbose
Version data entries
29 entries across 29 versions & 1 rubygems