From mquero@one-esecurity.com Tue Dec 20 13:08:02 2016 Received: (at submit) by bugs.x2go.org; 20 Dec 2016 12:08:04 +0000 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on ymir.das-netzwerkteam.de X-Spam-Level: X-Spam-Status: No, score=0.8 required=3.0 tests=BAYES_50,HTML_MESSAGE, URIBL_BLOCKED autolearn=ham version=3.3.2 Received: from localhost (localhost [127.0.0.1]) by ymir.das-netzwerkteam.de (Postfix) with ESMTP id 7D42B3CC60 for ; Tue, 20 Dec 2016 13:08:02 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at ymir.das-netzwerkteam.de Received: from ymir.das-netzwerkteam.de ([127.0.0.1]) by localhost (ymir.das-netzwerkteam.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id XAUy3DceTBoK for ; Tue, 20 Dec 2016 13:07:55 +0100 (CET) X-Greylist: delayed 724 seconds by postgrey-1.34 at ymir.das-netzwerkteam.de; Tue, 20 Dec 2016 13:07:55 CET Received: from jessland.net (200.red-81-47-178.staticip.rima-tde.net [81.47.178.200]) by ymir.das-netzwerkteam.de (Postfix) with ESMTPS id 408CA3CC5F for ; Tue, 20 Dec 2016 13:07:55 +0100 (CET) Received: from [127.0.0.1] (202.red-80-28-148.adsl.static.ccgg.telefonica.net [80.28.148.202]) by jessland.net (8.12.11/8.12.11) with ESMTP id uBIE2L02006592 for ; Sun, 18 Dec 2016 15:02:42 +0100 (CET) To: submit@bugs.x2go.org From: Miguel Quero Subject: x2gobroker-ssh big delay in session status recovery Message-ID: <39e399fd-41ad-bb00-0abd-7b5401bbe82f@one-esecurity.com> Date: Tue, 20 Dec 2016 12:55:21 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.5.1 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="------------DEE3B450ED3861DE2173B678" This is a multi-part message in MIME format. --------------DEE3B450ED3861DE2173B678 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Package: x2gobroker Version: 0.0.3.1 When x2gobroker-ssh is used with system with not IPv6 configured, this generate very big delays in x2gobroker listsession task. Before some research, the problem become from x2gobroker.utils portscan function. This function propagates a delay in all agents call because it tests first the IPV6 connection: /ip_proto = 0////try:////socket.getaddrinfo(addr, None, socket.AF_INET6)////ip_proto = 6////except socket.gaierror:////try:////socket.getaddrinfo(addr, None, socket.AF_INET)////ip_proto = 4////except socket.gaierror:////# we can't find a valid address for this host, so returning a failure...////return False /This will be fixed testing IPv4 first or more easily, setting a new option in config to select the ip protocol. Best regards. -- Miguel Quero | One eSecurity | www.one-esecurity.com M: +34 608 36 17 05 Europe (Spain): +34 911 011 000 PGP: 0x34AA 050B D15C 7593 5671 3748 40C6 8E95 6C5A 40D3 --------------DEE3B450ED3861DE2173B678 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit

Package: x2gobroker
Version: 0.0.3.1

When x2gobroker-ssh is used with system with not IPv6 configured, this generate very big delays in x2gobroker listsession task.

Before some research, the problem become from x2gobroker.utils portscan function.

This function propagates a delay in all agents call because it tests first the IPV6 connection:

    ip_proto = 0
    try:
        socket.getaddrinfo(addr, None, socket.AF_INET6)
        ip_proto = 6
    except socket.gaierror:
        try:
            socket.getaddrinfo(addr, None, socket.AF_INET)
            ip_proto = 4
        except socket.gaierror:
            # we can't find a valid address for this host, so returning a failure...
            return False

This will be fixed testing IPv4 first or more easily, setting a new option in config to select the ip protocol.

Best regards.

-- 
Miguel Quero | One eSecurity | www.one-esecurity.com
M: +34 608 36 17 05
Europe (Spain): +34 911 011 000
PGP: 0x34AA 050B D15C 7593 5671 3748 40C6 8E95 6C5A 40D3

--------------DEE3B450ED3861DE2173B678--