Net/SSH port forwarding doesn't work.
-------------------------------------
Key: JRUBY-5868
URL: http://jira.codehaus.org/browse/JRUBY-5868
Project: JRuby
Issue Type: Bug
Components: Standard Library
Affects Versions: JRuby 1.6.2
Environment: MacOS X 10.6.7, JRuby 1.6.2, Java build 1.6.0_24-b07-334
Reporter: Kevin Menard
Assignee: Thomas E Enebo
When attempting to port forward a local port so that it's available to a remote
machine, the connection seems to establish fine but I'm unable to access any
content from the remote machine on the forwarded port. A connection is
established, but trying to fetch content on it always times out. I do not have
this issue when running with either REE or Ruby 1.9.2.
Below is as simple a code example as I was able to distill it down. It's still
a bit heavy. In the example, I show forwarding port 3000 on the localhost to
port 12345 on example.com.
{code}
require 'rubygems'
require 'net/ssh'
require 'net/ssh/gateway'
#
http://groups.google.com/group/capistrano/browse_thread/thread/455c0c8a6faa9cc8?pli=1
class Net::SSH::Gateway
# Opens a SSH tunnel from a port on a remote host to a given host and port
# on the local side
# (equivalent to openssh -R parameter)
def open_remote(port, host, remote_port, remote_host = "127.0.0.1")
ensure_open!
@session_mutex.synchronize do
@session.forward.remote(port, host, remote_port, remote_host)
end
if block_given?
begin
yield [remote_port, remote_host]
ensure
close_remote(remote_port, remote_host)
end
else
return [remote_port, remote_host]
end
rescue Errno::EADDRINUSE
retry
end
# Cancels port-forwarding over an open port that was previously opened via
# #open_remote.
def close_remote(port, host = "127.0.0.1")
ensure_open!
@session_mutex.synchronize do
@session.forward.cancel_remote(port, host)
end
end
end
gateway = Net::SSH::Gateway.new('example.com', 'some_user')
gateway.open_remote(3000, 'localhost', 12345) do |rp, rh|
puts "You're now connected and reflecting ports"
begin
sleep 1 while true
rescue Interrupt
puts "Shutting down"
end
end
{code}
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