Some FB messages do not get delivered

[ghost]

If I send 10 messages, between 8 and 10 are received in FB chat.
Chat:

Hi, friend! 2013-09-11 17:46:05 +0300
Hi, friend! 2013-09-11 17:46:08 +0300
Hi, friend! 2013-09-11 17:46:13 +0300
Hi, friend! 2013-09-11 17:46:16 +0300

Resque log contains one more sent message missing from the chat:

Debugging mode enabled.
Warnings mode enabled.
RESOLVING:
    _xmpp-client._tcp.chat.facebook.com (SRV)
CONNECTING:
    chat.facebook.com:5222
"Socket:"
"local address: [\"AF_INET\", 39123, \"172.27.*.**\", \"172.27.*.**\"]"
"Thread list size: 1"
#<TCPSocket:fd 11>
SENDING:
    <stream:stream xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' to='chat.facebook.com' xml:lang='en' version='1.0' >
RECEIVED:
    <stream:stream from='chat.facebook.com' id='1' xml:lang='en' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' xmlns='jabber:client'/>
RECEIVED:
    <stream:features><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>PLAIN</mechanism></mechanisms></stream:features>
FEATURES: received
PROCESSING:
    <stream:features xmlns='jabber:client'><starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>PLAIN</mechanism></mechanisms></stream:features> (REXML::Element)
FEATURES: waiting...
TRYING stanzacbs...
FEATURES: waiting finished
TRYING message/iq/presence/cbs...
SENDING:
    <starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>
RECEIVED:
    <proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls'/>
TLSv1: OpenSSL handshake in progress
TLSv1: restarting parser
"Socket:"
"local address: [\"AF_INET\", 39123, \"172.27.*.**\", \"172.27.*.**\"]"
"Thread list size: 1"
#<TCPSocket:fd 11>
SENDING:
    <stream:stream xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' to='chat.facebook.com' xml:lang='en' version='1.0' >
RECEIVED:
    <stream:stream from='chat.facebook.com' id='1' xml:lang='en' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' xmlns='jabber:client'/>
RECEIVED:
    <stream:features><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>PLAIN</mechanism></mechanisms></stream:features>
FEATURES: waiting...
FEATURES: received
PROCESSING:
    <stream:features xmlns='jabber:client'><mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl'><mechanism>X-FACEBOOK-PLATFORM</mechanism><mechanism>PLAIN</mechanism></mechanisms></stream:features> (REXML::Element)
TRYING stanzacbs...
FEATURES: waiting finished
TRYING message/iq/presence/cbs...
SENDING:
    <auth mechanism='X-FACEBOOK-PLATFORM' xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>
RECEIVED:
    <challenge xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>dmVyc2lvbj0x...</challenge>
SASL DIGEST-MD5 challenge:
    version=1&method=auth.xmpp_login&nonce=E547D1842...
    {"version"=>"1", "method"=>"auth.xmpp_login", "nonce"=>"E547D1842..."}
SENDING:
    <response xmlns='urn:ietf:params:xml:ns:xmpp-sasl'>YXBpX2...
    </response>
RECEIVED:
    <success xmlns='urn:ietf:params:xml:ns:xmpp-sasl'/>
"Socket:"
"local address: [\"AF_INET\", 39123, \"172.27.*.**\", \"172.27.*.**\"]"
"Thread list size: 2"
#<TCPSocket:fd 11>
SENDING:
    <stream:stream xmlns:stream='http://etherx.jabber.org/streams' xmlns='jabber:client' to='chat.facebook.com' xml:lang='en' version='1.0' >
RECEIVED:
    <stream:stream from='chat.facebook.com' id='1' xml:lang='en' xmlns:stream='http://etherx.jabber.org/streams' version='1.0' xmlns='jabber:client'/>
RECEIVED:
    <stream:features><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></stream:features>
FEATURES: received
PROCESSING:
    <stream:features xmlns='jabber:client'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></stream:features> (REXML::Element)
TRYING stanzacbs...
TRYING message/iq/presence/cbs...
SENDING:
    <iq id='1192' type='set' xmlns='jabber:client'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'/></iq>
RECEIVED:
    <iq from='chat.facebook.com' id='1192' type='result'><bind xmlns='urn:ietf:params:xml:ns:xmpp-bind'><jid>[email protected]/oRbc4KeQ</jid></bind></iq>
SENDING:
    <iq id='2614' type='set' xmlns='jabber:client'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>
RECEIVED:
    <iq from='chat.facebook.com' id='2614' type='result'><session xmlns='urn:ietf:params:xml:ns:xmpp-session'/></iq>
SENDING:
    <message to='[email protected]' xmlns='jabber:client'><body>    Hi, friend! 2013-09-11 17:46:10 +0300
    </body></message>
SENDING:
    </stream:stream>

The code:

    Jabber::debug = true
    client = Jabber::Client.new(Jabber::JID.new(sender_chat_id))
    client.on_exception do |ex, stream, phase|
        Rails.logger.error "#{ex.inspect} ON phase #{phase}"
        raise ex
    end
    client.connect
    sasl = Jabber::SASL::XFacebookPlatform.new(
      ...
    )
    client.auth_sasl(sasl, nil)}
    client.send(Jabber::Message.new(receiver_chat_id, message_body))
    client.close

A possibly related fact is that the close method occasionally does not return a Thread object:

Rails.logger.error "close #{client.close}"
#close #<Thread:0xdf73840> (almost always)
#close (occasionally)

I made a simplified class that builds a authenticated and connected client with hardcoded params, I just call the send method client.send message from the Rails console. In this scenario it seems I cannot reproduce the issue.

[lyhoanglong]

when I try to connect facebook xmpp server I alway got error:

<internal-server-error xmlns='urn:ietf:params:xml:ns:xmpp-streams'/>    

stuck this line: client.auth_sasl(sasl, nil)
Do you have any idea about this error ? thanks.