Return-Path: Delivered-To: apmail-httpd-dev-archive@www.apache.org Received: (qmail 51699 invoked from network); 15 Sep 2006 15:43:27 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (209.237.227.199) by minotaur.apache.org with SMTP; 15 Sep 2006 15:43:27 -0000 Received: (qmail 23933 invoked by uid 500); 15 Sep 2006 15:43:21 -0000 Delivered-To: apmail-httpd-dev-archive@httpd.apache.org Received: (qmail 23883 invoked by uid 500); 15 Sep 2006 15:43:21 -0000 Mailing-List: contact dev-help@httpd.apache.org; run by ezmlm Precedence: bulk Reply-To: dev@httpd.apache.org list-help: list-unsubscribe: List-Post: List-Id: Delivered-To: mailing list dev@httpd.apache.org Received: (qmail 23867 invoked by uid 99); 15 Sep 2006 15:43:21 -0000 Received: from asf.osuosl.org (HELO asf.osuosl.org) (140.211.166.49) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 15 Sep 2006 08:43:21 -0700 X-ASF-Spam-Status: No, hits=-0.0 required=10.0 tests=SPF_HELO_PASS X-Spam-Check-By: apache.org Received-SPF: neutral (asf.osuosl.org: local policy) Received: from [207.106.84.159] (HELO atlas.jtan.com) (207.106.84.159) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 15 Sep 2006 08:43:08 -0700 X-JTAN-Outgoing-From: sctemme@apache.org X-JTAN-Outgoing-To: X-JTAN-Received: c-24-5-108-151.hsd1.ca.comcast.net [24.5.108.151] X-JTAN-Recipient: X-JTAN-AntiSPAM: not spam, Outgoing not scanned X-JTAN-AntiVirus: Found to be clean, Outgoing not scanned Received: from [10.11.0.103] (c-24-5-108-151.hsd1.ca.comcast.net [24.5.108.151]) (authenticated bits=0) by atlas.jtan.com (8.12.8p1/8.12.8) with ESMTP id k8FFfW9K006109 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Fri, 15 Sep 2006 11:41:33 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v752.2) In-Reply-To: References: Content-Type: multipart/signed; micalg=sha1; boundary=Apple-Mail-15--360936511; protocol="application/pkcs7-signature" Message-Id: <01D5AE39-BA25-49D6-B877-35F999AD2DD0@apache.org> From: Sander Temme Subject: Re: load balancer and http(s) sticky sessions Date: Fri, 15 Sep 2006 08:41:29 -0700 To: dev@httpd.apache.org X-Mailer: Apple Mail (2.752.2) X-Virus-Checked: Checked by ClamAV on apache.org X-Spam-Rating: minotaur.apache.org 1.6.2 0/1000/N --Apple-Mail-15--360936511 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; delsp=yes; format=flowed On Sep 15, 2006, at 12:29 AM, Pl=FCm, R=FCdiger, VF EITO wrote: > > >> -----Urspr=FCngliche Nachricht----- >> Von: Sander Temme >> Gesendet: Freitag, 15. September 2006 01:02 >> An: dev@httpd.apache.org >> Betreff: Re: load balancer and http(s) sticky sessions >> >> >> >> On Sep 14, 2006, at 3:49 PM, Ruediger Pluem wrote: >> >>> >>> On 09/14/2006 06:14 PM, Jim Jagielski wrote: >>>> >>>> >>>> That's what I'm thinking, sort of like an 'autostickysession' >>>> attribute. >>>> We could even have it default to cookies but add something like >>>> 'autostickysession=3Durl' to force URL rewriting and adding a tag >>>> to the end of the URL (for sites that don't like cookies).... >>> >>> I guess URL rewriting can be tricky when you have no idea of the >>> application on the >>> backend. How do you handle POST requests? >> >> Wouldn't we get the pathinfo back that we tack onto the action >> attribute of a form? > > But what if you need to switch the backend due to a failure there =20 > and adjust > the routing information? Same as when the LB session ID comes in as a cookie? The pathinfo =20 would contain the same or similar information as the cookie and be =20 used for the same purpose. I don't know if we want to put explicit =20 route information in the tag in the way we do now (cookievalue.route) =20= or keep that state on the server, but the result would be the same. What happens today when a request arrives with cookie value.tomcat1 =20 and tomcat1 is out of commission? It gets routed to tomcat2, right? S. --=20 sctemme@apache.org http://www.temme.net/sander/ PGP FP: 51B4 8727 466A 0BC3 69F4 B7B8 B2BE BC40 1529 24AF --Apple-Mail-15--360936511 Content-Transfer-Encoding: base64 Content-Type: application/pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGPDCCAvUw ggJeoAMCAQICEAIyF6zjtP6rQ//mXTcll14wDQYJKoZIhvcNAQEEBQAwYjELMAkGA1UEBhMCWkEx JTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQ ZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA2MDYxODE3MDYyMFoXDTA3MDYxODE3MDYy MFowWzEOMAwGA1UEBBMFVGVtbWUxDzANBgNVBCoTBlNhbmRlcjEVMBMGA1UEAxMMU2FuZGVyIFRl bW1lMSEwHwYJKoZIhvcNAQkBFhJzY3RlbW1lQGFwYWNoZS5vcmcwggEiMA0GCSqGSIb3DQEBAQUA A4IBDwAwggEKAoIBAQDJaqOD1gZ1Z4GW7jzLg192RRTnScJOrHlsHu0z4/BjTf+Zq4ziF8p0RZlJ vi8V8Dx4Xwl7osFrI081IuoZQnvbLZXIYsjPTFvg/yjEpp02QLTDpSAKxBniauQGIJPgEutDmb2u 7EAm9nHPKyeJ33PbmDYKQzjujnLW1Qx77GnyocKTqrZCcpaOCH08Vn7DZnYP8oAG9Zmgw8n4oLmw U0m5Sacj3EulCRTFS4acejaC7ZkNIXzS7CFrDukgxn6U99Xf2xoVrk9hXmCH62h1i4ItgWmFV1BS vsrgG/V1q+8SAjZrnMNXHsER4EEKp+hDBBFy2j6HABaGGUuS0gs4BqqrAgMBAAGjLzAtMB0GA1Ud EQQWMBSBEnNjdGVtbWVAYXBhY2hlLm9yZzAMBgNVHRMBAf8EAjAAMA0GCSqGSIb3DQEBBAUAA4GB AE5+/Xn03o51+851PNo/ydkgPd1QHu3d5PHTWeRUpRNbfEJgAcLFzyTAa+keWtK+xv1xB4SCUHKT FZxaxoySE78f/ldmfUqdgJNZjDP076aEpUPsfNQ8iD/eao6pehlYw6RNeejt+XWfkQlhPdkIZwUH L1ozjjzTVzSsSEPzakOVMIIDPzCCAqigAwIBAgIBDTANBgkqhkiG9w0BAQUFADCB0TELMAkGA1UE BhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2FwZTESMBAGA1UEBxMJQ2FwZSBUb3duMRowGAYDVQQK ExFUaGF3dGUgQ29uc3VsdGluZzEoMCYGA1UECxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZp c2lvbjEkMCIGA1UEAxMbVGhhd3RlIFBlcnNvbmFsIEZyZWVtYWlsIENBMSswKQYJKoZIhvcNAQkB FhxwZXJzb25hbC1mcmVlbWFpbEB0aGF3dGUuY29tMB4XDTAzMDcxNzAwMDAwMFoXDTEzMDcxNjIz NTk1OVowYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0 ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMIGfMA0GCSqG SIb3DQEBAQUAA4GNADCBiQKBgQDEpjxVc1X7TrnKmVoeaMB1BHCd3+n/ox7svc31W/Iadr1/DDph 8r9RzgHU5VAKMNcCY1osiRVwjt3J8CuFWqo/cVbLrzwLB+fxH5E2JCoTzyvV84J3PQO+K/67GD4H v0CAAmTXp6a7n2XRxSpUhQ9IBH+nttE8YQRAHmQZcmC3+wIDAQABo4GUMIGRMBIGA1UdEwEB/wQI MAYBAf8CAQAwQwYDVR0fBDwwOjA4oDagNIYyaHR0cDovL2NybC50aGF3dGUuY29tL1RoYXd0ZVBl cnNvbmFsRnJlZW1haWxDQS5jcmwwCwYDVR0PBAQDAgEGMCkGA1UdEQQiMCCkHjAcMRowGAYDVQQD ExFQcml2YXRlTGFiZWwyLTEzODANBgkqhkiG9w0BAQUFAAOBgQBIjNFQg+oLLswNo2asZw9/r6y+ whehQ5aUnX9MIbj4Nh+qLZ82L8D0HFAgk3A8/a3hYWLD2ToZfoSxmRsAxRoLgnSeJVCUYsfbJ3FX JY3dqZw5jowgT2Vfldr394fWxghOrvbqNOUQGls1TXfjViF4gtwhGTXeJLHTHUb/XV9lTzGCAxAw ggMMAgEBMHYwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkp IEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAhACMhes 47T+q0P/5l03JZdeMAkGBSsOAwIaBQCgggFvMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJ KoZIhvcNAQkFMQ8XDTA2MDkxNTE1NDEzMFowIwYJKoZIhvcNAQkEMRYEFPVBCaswBi93m6V/FmI0 jl63XTgTMIGFBgkrBgEEAYI3EAQxeDB2MGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUg Q29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwg SXNzdWluZyBDQQIQAjIXrOO0/qtD/+ZdNyWXXjCBhwYLKoZIhvcNAQkQAgsxeKB2MGIxCzAJBgNV BAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNU aGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIQAjIXrOO0/qtD/+ZdNyWXXjANBgkq hkiG9w0BAQEFAASCAQAU5Nzu2WFxZfAYn6fE/umyoVjlmvAthta58X5IuwF00b7Sx+skN0JbrFUN ipXG/OFvED6MzvjxTg9//JhnCY9U+av/nWH0pjI5dGomFiqlRNpAJChASh5lEaPPzP4/ZJsPC6AZ DX+dT051ATpWKa5xQSY56StkaVwEi2QqjYB1buEroH/xPUBroXFpFS3kNf7HeWgs1sWJkuURV+PM F7WS9nQgrmExm95ZR2aO+CnZJGo5gI9q6Ci6j/DvOP7PIWeo7QwnlmPSrMkLY1jU44XhNMs7wcMf cSOkiTOX0/sFdSGX630Uh0ZM5eoeGHOPpk3ZUtvj3YXtFxGZ+ruRGytoAAAAAAAA --Apple-Mail-15--360936511--