XP: "An existing connection was forcibly closed" ECONNRESET

ruby-talk
1

Hello,
I am running Ruby 1-185-21 on Win XP without any proxy enabled.
When trying to connect to HTTP server (both server and client are my
Ruby scripts) at *localhost* I get this error:
"
c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `sysread': An existing
connection was forcibly closed by the remote host. (Errno::ECONNRESET)
"

Interesting facts:
1) Firefox works without any problems with my Ruby server!!!
2) IE doesn't work with my Ruby server!!!
3) My client works fine with all other HTTP servers on the Internet,
except for my Ruby server on localhost :frowning:

(see bellow complete trace of this error and source of my simple server
and client)

Any ideas?
Thanks,
Dima
<pre>
=== localhost error trace:

ruby test-serv.rb localhost 10001
[Sat Sep 23 01:22:16 2006] TimeServer 127.0.0.1:10001 start
Server started...
Connecting to server localhost:10001 at Sat Sep 23 01:22:21 +0400 2006
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 client:1203
localhost<127.0.0.1> connect
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 client:1203
disconnect
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 stop
c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `sysread': An existing
connection was forcibly closed by the remote host. (Errno::ECONNRESET)
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `rbuf_fill'
        from c:/usr/ruby/lib/ruby/1.8/timeout.rb:56:in `timeout'
        from c:/usr/ruby/lib/ruby/1.8/timeout.rb:76:in `timeout'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:132:in `rbuf_fill'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:126:in `readline'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:2017:in
`read_status_line'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:2006:in `read_new'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1047:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1034:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:543:in `start'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1032:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:769:in `get'
        from test-serv.rb:35

=== no error trace:

C:\wks\ruby-wks>ruby test-serv.rb www.rubycentral.com 80
Connecting to server www.rubycentral.com:80 at Sat Sep 23 01:29:28 +0400
2006
Code: 200 Msg: OK
Connecting to server www.rubycentral.com:80 at Sat Sep 23 01:29:34 +0400
2006
Code: 200 Msg: OK

=== source:
require 'gserver'
require 'net/http'

  TIME_OUT = 5
  host = ARGV[0]
  port = ARGV[1]

  if host == 'localhost' then

···

#
  # A server that returns the time in seconds since 1970.
  #

    class TimeServer < GServer
      def initialize(port=10001, *args)
        super(port, *args)
      end
      def serve(io)
        io.puts(Time.now.to_i)
      end
    end

    # Run the server with logging enabled (it's a separate thread).
    server = TimeServer.new
    server.audit = true # Turn logging on.
    server.start
    puts "Server started...\n"
  end #host == 'localhost'

  # Test server
  while (true)
    sleep TIME_OUT
    puts("Connecting to server #{host}:#{port} at #{Time.now}\n")
    h = Net::HTTP.new(host,port)
    res, data = h.get('/index.html', nil )
    puts("Code: #{res.code} Msg: #{res.message}\n")
  end
</pre>

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2

Dima,

You're connecting to the server using HTTP, so the server should return valid HTTP header, i.e.:

     class TimeServer < GServer
       def initialize(port=10001, *args)
         super(port, *args)
       end
       def serve(io)
         str = "HTTP/1.0 200 OK\r\n\r\n#{Time.now.to_i}"
         puts str
         io.puts(str)
       end
     end

Haven't tried it on Windows, but this works on Mac whereas your version fails as you described.

Best,
Mike Dvorkin
http://www.rubywizards.com

···

On Sep 22, 2006, at 3:01 PM, Dmitri Kondratiev wrote:

Hello,
I am running Ruby 1-185-21 on Win XP without any proxy enabled.
When trying to connect to HTTP server (both server and client are my
Ruby scripts) at *localhost* I get this error:
"
c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `sysread': An existing
connection was forcibly closed by the remote host. (Errno::ECONNRESET)
"

Interesting facts:
1) Firefox works without any problems with my Ruby server!!!
2) IE doesn't work with my Ruby server!!!
3) My client works fine with all other HTTP servers on the Internet,
except for my Ruby server on localhost :frowning:

(see bellow complete trace of this error and source of my simple server
and client)

Any ideas?
Thanks,
Dima
<pre>
=== localhost error trace:

ruby test-serv.rb localhost 10001
[Sat Sep 23 01:22:16 2006] TimeServer 127.0.0.1:10001 start
Server started...
Connecting to server localhost:10001 at Sat Sep 23 01:22:21 +0400 2006
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 client:1203
localhost<127.0.0.1> connect
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 client:1203
disconnect
[Sat Sep 23 01:22:21 2006] TimeServer 127.0.0.1:10001 stop
c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `sysread': An existing
connection was forcibly closed by the remote host. (Errno::ECONNRESET)
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `rbuf_fill'
        from c:/usr/ruby/lib/ruby/1.8/timeout.rb:56:in `timeout'
        from c:/usr/ruby/lib/ruby/1.8/timeout.rb:76:in `timeout'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:132:in `rbuf_fill'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:116:in `readuntil'
        from c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:126:in `readline'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:2017:in
`read_status_line'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:2006:in `read_new'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1047:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1034:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:543:in `start'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:1032:in `request'
        from c:/usr/ruby/lib/ruby/1.8/net/http.rb:769:in `get'
        from test-serv.rb:35

=== no error trace:

C:\wks\ruby-wks>ruby test-serv.rb www.rubycentral.com 80
Connecting to server www.rubycentral.com:80 at Sat Sep 23 01:29:28 +0400
2006
Code: 200 Msg: OK
Connecting to server www.rubycentral.com:80 at Sat Sep 23 01:29:34 +0400
2006
Code: 200 Msg: OK

=== source:
require 'gserver'
require 'net/http'

  TIME_OUT = 5
  host = ARGV[0]
  port = ARGV[1]

  if host == 'localhost' then
  #
  # A server that returns the time in seconds since 1970.
  #

    class TimeServer < GServer
      def initialize(port=10001, *args)
        super(port, *args)
      end
      def serve(io)
        io.puts(Time.now.to_i)
      end
    end

    # Run the server with logging enabled (it's a separate thread).
    server = TimeServer.new
    server.audit = true # Turn logging on.
    server.start
    puts "Server started...\n"
  end #host == 'localhost'

  # Test server
  while (true)
    sleep TIME_OUT
    puts("Connecting to server #{host}:#{port} at #{Time.now}\n")
    h = Net::HTTP.new(host,port)
    res, data = h.get('/index.html', nil )
    puts("Code: #{res.code} Msg: #{res.message}\n")
  end
</pre>

--
Posted via http://www.ruby-forum.com/\.

3

I don't have anything useful to say about the possible problem in gserver,
but if you're interested in an alternative approach to your application,
look at the EventMachine library in Rubyforge.

···

On 9/22/06, Dmitri Kondratiev <dokondr@gmail.com> wrote:

Hello,
I am running Ruby 1-185-21 on Win XP without any proxy enabled.
When trying to connect to HTTP server (both server and client are my
Ruby scripts) at *localhost* I get this error:
"
c:/usr/ruby/lib/ruby/1.8/net/protocol.rb:133:in `sysread': An existing
connection was forcibly closed by the remote host. (Errno::ECONNRESET)
"

4

Mike,
This doesn't help. Before, eventually looking into the source of
gserver.rb I tried my code on Debian Linux - same error. Which is good,
at least Ruby is consistent accross platforms.
If you look at gserver.rb you will see that this server closes client
socket right after it servers it, which he must not do and which
perfectly explains why gserver.rb does not work correctly.
Also see my coments (#dk:) inline:

···

Dima,

You're connecting to the server using HTTP, so the server should
return valid HTTP header, i.e.:

     class TimeServer < GServer
       def initialize(port=10001, *args)
         super(port, *args)
       end
       def serve(io)
         str = "HTTP/1.0 200 OK\r\n\r\n#{Time.now.to_i}"
         puts str

           ~~~~~~~~
#dk: This may confuse: server itself outputs its own response

         io.puts(str)
       end
     end

Haven't tried it on Windows, but this works on Mac whereas your
version fails as you described.

gserver.rb closes client socket right after serving it :frowning:
From gserver.rb:

          client = @tcpServer.accept
          @connections << Thread.new(client) { |myClient|
            begin
              myPort = myClient.peeraddr[1]
              serve(myClient) if !@audit or connecting(myClient)
            rescue => detail
              error(detail) if @debug
            ensure
              begin
                myClient.close
              rescue
              end
              @connectionsMutex.synchronize {
                @connections.delete(Thread.current)
                @connectionsCV.signal
              }
              disconnecting(myPort) if @audit
            end
          }
        end

Dima

--
Posted via http://www.ruby-forum.com/\.

5

Francis Cianfrocca wrote:

I don't have anything useful to say about the possible problem in
gserver,
but if you're interested in an alternative approach to your application,
look at the EventMachine library in Rubyforge.

Thanks, I am looking at it now. I need some good messaging framework for
Ruby IPC, maybe EventMachine is just what I need!

Thanks again!
Dima

···

--
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