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  1. Undertow
  2. UNDERTOW-674

mod_cluster proxy: If jvmRoute contains symbol = session stickiness is broken

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Details

    • Bug
    • Resolution: Won't Do
    • Major
    • None
    • 1.3.19.Final
    • Proxy

    Description

      Problem

      If jvmRoute contains symbol =, the session stickiness breaks. The following example operates with a jvmRoute that contain dots and other symbols, but the issue is reproducible wit as simple jvmRoute as: worker=1. The symbol should be properly parsed and used or rejected as suspicious, alongside with < and such. I incline to the former, i.e. parsing it properly.

      Symptoms

      • session ID remains the same
      • jvmRoute appended to the session ID remains the same – which is especially misleading
      • the servlet is actually executed on random nodes, see undermentioned example

      Example

      Client

      date;curl 192.168.122.172:8080/clusterbench/requestinfo -b cookie.txt -c cookie.txt

      Test

      Follows sequence of client and server log outputs, note header's Cookie=JSESSIONID=... and servlet's JVM route:

      Client event 
      Mon Apr  4 05:29:56 EDT 2016
Headers: {Cookie=JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=..., Accept=*/*, User-Agent=curl/7.29.0, X-Forwarded-Proto=http, X-Forwarded-Host=192.168.122.172, X-Forwarded-For=192.168.122.172, Host=192.168.122.172:8080, Content-Length=0, X-Forwarded-Port=8080, X-Forwarded-Server=192.168.122.172}
JVM route: .worker.-2=...
Session ID: YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca
Session isNew: false
Session ServletContext: io.undertow.servlet.spec.ServletContextImpl@492e9e9d
      Server event 
      05:29:56,395 DEBUG [io.undertow.server.handlers.proxy] (default I/O-4) Sending request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:56,395 DEBUG [io.undertow.server.handlers.proxy] (default I/O-4) Sent request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:56,396 DEBUG [io.undertow.request] (default I/O-4) suspending writes on io.undertow.protocols.ajp.AjpClientRequestClientStreamSinkChannel@655c8ba8 to prevent listener runaway
05:29:56,403 DEBUG [io.undertow.server.handlers.proxy] (default I/O-4) Received response io.undertow.client.ClientResponse@1b177dc5 for request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
      Client event 
      Mon Apr  4 05:29:56 EDT 2016
Headers: {Cookie=JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=..., Accept=*/*, User-Agent=curl/7.29.0, X-Forwarded-Proto=http, X-Forwarded-Host=192.168.122.172, X-Forwarded-For=192.168.122.172, Host=192.168.122.172:8080, Content-Length=0, X-Forwarded-Port=8080, X-Forwarded-Server=192.168.122.172}
JVM route: .worker.-2=...
Session ID: YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca
Session isNew: false
Session ServletContext: io.undertow.servlet.spec.ServletContextImpl@492e9e9d
      Server event 
      05:29:56,859 DEBUG [io.undertow.server.handlers.proxy] (default I/O-3) Sending request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:56,860 DEBUG [io.undertow.server.handlers.proxy] (default I/O-3) Sent request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:56,860 DEBUG [io.undertow.request] (default I/O-3) suspending writes on io.undertow.protocols.ajp.AjpClientRequestClientStreamSinkChannel@18859d68 to prevent listener runaway
05:29:56,867 DEBUG [io.undertow.server.handlers.proxy] (default I/O-3) Received response io.undertow.client.ClientResponse@366ef93b for request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}

05:29:56,891 DEBUG [io.undertow] (default I/O-4) UT005040: Gonna send payload:
HTTP/1.0 200 OK
Date: Mon, 4 Apr 2016 05:29:56 -0400
Sequence: 217
Digest: b28e7f72ae2c17ba6971bf5eeac50d45
Server: fbacdea8-4950-4c32-a064-91ff48db17e1
X-Manager-Address: rhel7GAx86-64:8080
X-Manager-Url: /
X-Manager-Protocol: httpd
X-Manager-Host: rhel7GAx86-64
      Client event 
      Mon Apr  4 05:29:57 EDT 2016
Headers: {Cookie=JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=..., Accept=*/*, User-Agent=curl/7.29.0, X-Forwarded-Proto=http, X-Forwarded-Host=192.168.122.172, X-Forwarded-For=192.168.122.172, Host=192.168.122.172:8080, Content-Length=0, X-Forwarded-Port=8080, X-Forwarded-Server=192.168.122.172}
JVM route: ......worker.-1=...
Session ID: YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca
Session isNew: false
Session ServletContext: io.undertow.servlet.spec.ServletContextImpl@66524317
      Server event 
      05:29:57,349 DEBUG [io.undertow.server.handlers.proxy] (default I/O-2) Sending request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:57,349 DEBUG [io.undertow.server.handlers.proxy] (default I/O-2) Sent request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:57,349 DEBUG [io.undertow.request] (default I/O-2) suspending writes on io.undertow.protocols.ajp.AjpClientRequestClientStreamSinkChannel@7839d343 to prevent listener runaway
05:29:57,353 DEBUG [io.undertow.server.handlers.proxy] (default I/O-2) Received response io.undertow.client.ClientResponse@73974106 for request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
      Client event 
      Mon Apr  4 05:29:57 EDT 2016
Headers: {Cookie=JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=..., Accept=*/*, User-Agent=curl/7.29.0, X-Forwarded-Proto=http, X-Forwarded-Host=192.168.122.172, X-Forwarded-For=192.168.122.172, Host=192.168.122.172:8080, Content-Length=0, X-Forwarded-Port=8080, X-Forwarded-Server=192.168.122.172}
JVM route: .worker.-2=...
Session ID: YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca
Session isNew: false
Session ServletContext: io.undertow.servlet.spec.ServletContextImpl@492e9e9d
      Server event 
      05:29:57,860 DEBUG [io.undertow.server.handlers.proxy] (default I/O-1) Sending request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:57,860 DEBUG [io.undertow.server.handlers.proxy] (default I/O-1) Sent request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} to target 192.168.122.172 for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}
05:29:57,860 DEBUG [io.undertow.request] (default I/O-1) suspending writes on io.undertow.protocols.ajp.AjpClientRequestClientStreamSinkChannel@16c1c959 to prevent listener runaway
05:29:57,873 DEBUG [io.undertow.server.handlers.proxy] (default I/O-1) Received response io.undertow.client.ClientResponse@327d939 for request ClientRequest{path='/clusterbench/requestinfo', method=GET, protocol=HTTP/1.1} for exchange HttpServerExchange{ GET /clusterbench/requestinfo request {Accept=[*/*], Cookie=[JSESSIONID=YB7hKkXeSW0iMK-l7ouJ4fwF1w8wxxtn-qaRtSca.......worker.-1=...], User-Agent=[curl/7.29.0], Host=[192.168.122.172:8080]} response {X-Powered-By=[Undertow/1], Server=[JBoss-EAP/7]}}

      Expected result

      Both workers are available and sticky sessions are enabled – we expect to keep having responses from single worker with the same session.

      WDYT?

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          Bug - A problem that impairs or prevents the functions of the product. JBEAP-4072 mod_cluster proxy: If jvmRoute contains symbol = session stickiness is broken

          • Minor - To be worked after urgent, high, and medium priorities are resolved. This term is chosen when the severity of the issue is low, or the complexity or effort to correct it may be higher, relatively speaking. For low priority issues, known workarounds exist or are not needed due to the trivial effort needed to address the issue.
          • Closed

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              sdouglas1@redhat.com Stuart Douglas
              mbabacek1@redhat.com Michal Karm
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                Updated:
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