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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 44592] mod_proxy fails to send post request to backend server
Date Mon, 23 Jun 2008 10:35:46 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=44592


Spil <apache.org@bachfreund.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|2.2.8                       |2.2.9




--- Comment #9 from Spil <apache.org@bachfreund.nl>  2008-06-23 03:35:45 PST ---
We are experiencing this issue on our reverse proxies. Meanwhile, we've
confirmed this on
Apache-2.2.6/Windows Server 2003 (VS2008 build from apachelounge.com)
Apache-2.2.8/Windows Server 2003 (VS2008 build from apachelounge.com)
Apache-2.2.9/Windows Server 2003 (standard ASF build)
Apache-2.2.8/Ubuntu 8.04 (standard package)

This error is infrequent, ca. one POST request per 100 fails (1%). We've
captured the network-data on our dev-box whilst triggering the error.

The request to Apache has a POST-body (see decrypted frame 289 below)

== Decrypted frame 289 ==
POST
/sap(bD1lbiZjPTI1MCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhcGxzYXBkYzIwMF9EQzJfMDAlM2FWZ3VNRER3Mk1EbWpRdjJreHFBc2x5SUc1MFlvNmJFV0VWa2Zuc1hwLUFUVA==)/bc/bsp/sap/crm_ui_frame/bspwdapplication.do?id=218&target_id=MD-BP-OV&entity_name=BuilHeader&entity_key=FF060101010280003431303200000000010400000000100000003C030000000000000000000000000000000000000000004B00450059BC000000100A81BC7BA3914F67B4FE53F54883D55FBD04
HTTP/1.1
Accept: */*
Accept-Language: en,th;q=0.8,fr;q=0.7,pl;q=0.5,zh;q=0.3,nl;q=0.2
x-prototype-version: 1.3.1
Referer:
https://www.dev.tradelink.com/sap(bD1FTiZjPTI1MCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhcGxzYXBkYzIwMF9EQzJfMDAlM2FWZ3VNRER3Mk1EbWpRdjJreHFBc2x5SUc1MFlvNmJFV0VWa2Zuc1hwLUFUVA==)/bc/bsp/sap/crm_ui_frame/bspwdapplication.do?id=238&target_id=TSEGFR_ED&entity_name=SEGSet&entity_key=FF060101010280003431303200000000010400000000100000003C030000000000000000000000000000000000000000004B00450059BC0000001046D9D464D19C0432E1008000828BF835BD04
x-requested-with: XMLHttpRequest
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR
1.1.4322; .NET CLR 2.0.50727; InfoPath.1)
Host: www.dev.tradelink.com
Content-Length: 1153
Connection: Keep-Alive
Cache-Control: no-cache
Cookie: smuid=10032008-668-1301382274084061205134725;
colstate=-#-#undefined#undefined#undefined#undefined#;
sap-usercontext=sap-language=EN&sap-client=250;
MYSAPSSO2=AjQxMDIBABgATgBMAFkAMgA2ADEAMAA0ACAAIAAgACACAAYAMgA1ADADABAARABDADIAIAAgACAAIAAgBAAYADIAMAAwADgAMAA2ADEANwAwADgAMwAzBQAEAAAACAYAAgBYCQACAEX%2fAZgwggGUBgkqhkiG9w0BBwKgggGFMIIBgQIBATELMAkGBSsOAwIaBQAwCwYJKoZIhvcNAQcBMYIBYDCCAVwCAQEwEzAOMQwwCgYDVQQDEwNNRUkCAQAwCQYFKw4DAhoFAKBdMBgGCSqGSIb3DQEJAzELBgkqhkiG9w0BBwEwHAYJKoZIhvcNAQkFMQ8XDTA4MDYxNzA4MzMwNFowIwYJKoZIhvcNAQkEMRYEFIDMRk8sRkKCPzZbn2yj8syOtZ6iMIGmBgUrDgMCGzCBnAJBAJQ%2f%21BvMlO438nBG1f0FClCbEbRI2SfTcTOJItOHZ6bWOXqux0Eh8ar%2fusZv21ME4zukJjnfB7ojFb3jqUuKgAsCFQDUmKLfAYXcLt7S0XDVjzPoiXBF9wJATF6H5rabRtyKht509WDmvyb0mneKh6WCwUVDjgybhnVZCWjiX7jA3CxmB2%2f05llqGpoLwmMfP0nwFbKMfcCEJwQvMC0CFQCT3xI6NJUwto4ha1Zc4TqatcCR7wIUPi348KqSKQdrfwT1xMKGX1DviHY%3d

htmlbevt_ty=thtmlb%3Alink%3Aclick%3A0&htmlbevt_frm=myFormId&htmlbevt_oid=C4_W14_V15_Z_SLS_OPP&htmlbevt_id=SLS-CYC-WC&htmlbevt_cnt=0&htmlbevt_par1=&htmlbevt_par2=&htmlbevt_par3=&htmlbevt_par4=&htmlbevt_par5=&htmlbevt_par6=&htmlbevt_par7=&htmlbevt_par8=&htmlbevt_par9=&onInputProcessing=htmlb&myFormId_complete=&sap-htmlb-design=&sap-ajaxtarget=C1_W1_V2_C4_W14_V15_MainNavigationLinks.do&sap-ajax_dh_mode=AUTO&thtmlbKeyboardFocusId=C4_W14_V15_Z_SLS_OPP&C6_W18_V19_selected_key=481371179A7A01E9E1008000828BF835&crmFrwScrollXPos=0&crmFrwScrollYPos=160&C1_W1_V2_V3_V20_bchistory_selection=&C20_W51_V52_0001_iscollapsed=&C20_W51_V52_0002_iscollapsed=&C20_W51_V52_0003_iscollapsed=&C20_W51_V52_0004_iscollapsed=&C20_W51_V52_0005_iscollapsed=&C20_W51_V52_0006_iscollapsed=X&C20_W51_V52_0007_iscollapsed=&C20_W51_V52_0008_iscollapsed=&C20_W51_V52_0009_iscollapsed=X&C20_W51_V52_0010_iscollapsed=X&C20_W51_V52_0014_iscollapsed=&thtmlbScrollAreaWidth=1107&thtmlbScrollAreaHeight=537&LTX_PREFIX_ID=C1_W
 1_V2_&C1_W1_V2_LTX_VETO_FLAG=&C1_W1_V2_ACTION_GUID=&C1_W1_V2_AC_OBJECT_KEY=&C1_W1_V2_AC_VALUE=&C1_W1_V2_AC_CONTAINER=&C1_W1_V2_MYITSLOCATION=&sap-ajax_request=X&_=
== End ==

access-log
130.144.209.17 - - [17/Jun/2008:11:38:38 +0200] "POST
/sap(bD1lbiZjPTI1MCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhcGxzYXBkYzIwMF9EQzJfMDAlM2FWZ3VNRER3Mk1EbWpRdjJreHFBc2x5SUc1MFlvNmJFV0VWa2Zuc1hwLUFUVA==)/bc/bsp/sap/crm_ui_frame/bspwdapplication.do?id=218&target_id=MD-BP-OV&entity_name=BuilHeader&entity_key=FF060101010280003431303200000000010400000000100000003C030000000000000000000000000000000000000000004B00450059BC000000100A81BC7BA3914F67B4FE53F54883D55FBD04
HTTP/1.1" 200 105406
130.139.104.40 - - [17/Jun/2008:11:39:09 +0200] "GET
/sap/public/myssocntl?sap-client=250 HTTP/1.1" 302 -
<snip>
130.139.104.40 - - [17/Jun/2008:11:43:42 +0200] "GET
/sap(bD1lbiZjPTI1MA==)/bc/bsp/sap/zget_opp_order/result_header.htm?customer_number=0300095243&scope=Q
HTTP/1.1" 200 195478
130.144.209.17 - - [17/Jun/2008:11:38:49 +0200] "POST
/sap(bD1lbiZjPTI1MCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhcGxzYXBkYzIwMF9EQzJfMDAlM2FWZ3VNRER3Mk1EbWpRdjJreHFBc2x5SUc1MFlvNmJFV0VWa2Zuc1hwLUFUVA==)/bc/bsp/sap/crm_ui_frame/bspwdapplication.do?id=218&target_id=MD-BP-OV&entity_name=BuilHeader&entity_key=FF060101010280003431303200000000010400000000100000003C030000000000000000000000000000000000000000004B00450059BC000000100A81BC7BA3914F67B4FE53F54883D55FBD04
HTTP/1.1" 403 -
130.139.104.40 - - [17/Jun/2008:11:44:40 +0200] "GET
/sap(bD1lbiZjPTI1MCZkPW1pbg==)/bc/bsp/sap/crm_ui_frame/sessionexit.gif?sap-contextid=SID%3aANON%3aplsapdc200_DC2_00%3aVguMDDx6dRfmx-zTCL3ffp8jf0Yo6bwQMln2UiQp-ATT&sap-sessioncmd=CLOSE
HTTP/1.1" 200 -

error-log
[Tue Jun 17 11:43:49 2008] [error] (OS 10060)A connection attempt failed
because the connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to respond.  :
proxy: prefetch request body failed to 130.144.0.220:8000 () from
130.144.209.17 ()
[Tue Jun 17 11:43:49 2008] [error] [client 130.144.209.17] Handler for
proxy-server returned invalid result code 730060, referer:
https://www.dev.tradelink.philips.com/sap(bD1FTiZjPTI1MCZkPW1pbiZpPTEmcz1TSUQlM2FBTk9OJTNhcGxzYXBkYzIwMF9EQzJfMDAlM2FWZ3VNRER3Mk1EbWpRdjJreHFBc2x5SUc1MFlvNmJFV0VWa2Zuc1hwLUFUVA==)/bc/bsp/sap/crm_ui_frame/bspwdapplication.do?id=238&target_id=TSEGFR_ED&entity_name=SEGSet&entity_key=FF060101010280003431303200000000010400000000100000003C030000000000000000000000000000000000000000004B00450059BC0000001046D9D464D19C0432E1008000828BF835BD04

Network Captures attached
Client-to-Apache.pcap: Frame 289 is the POST request from the client
(11:38:49.472677)
Apache-to-Backend.pcap: No corresponding frame (frame 273 corresponds to the
next GET request in Client-to-Apache dump)

Strangely, this capture show a 403 error whereas on our productive system this
results in a 500 error (I did notice directory access for the error-docs was
incorrect)


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