We have an application that consists of REST endpoints on a jboss server(5.1.0) fronted by Apache httpd(2.2.15). When a client makes a bad request it usually gets the expected 400 http response code but sometimes the client sees a 200. This happens sporadically. Two days ago I ran a test where it happened 11 out of 20 times. Today the highest occurrence has been 3 out of 40.
To add some context here's some output from the test. Note both calls are identical but one gets a 400, the other 200:
curl -s -D- -u user:passwd -X POST --data @uc.json https://ourdomain.com/ourapp/rest/v3/subscriber/<id>/user/0 2>&1
21 : HTTP/1.1 400 Bad Request^M Date: Wed, 15 Oct 2014 18:44:22 GMT^M X-Powered-By: Servlet 2.5; JBoss-5.0/JBossWeb-2.1^M Content-Type: application/json^M Content-Length: 361^M Connection: close^M ^M^M { "ErrorMessage" : { "errorMessage" : "Json validation failure: {level=\"error\", schema={\"loadingURI\":\"#\",\"pointer\":\"/properties/userConfig/properties/userType\"}, instance={\"pointer\":\"/userConfig/userType\"}, domain=\"validation\", keyword=\"enum\", message=\"instance does not match any enum value\", enum=[\"0\",\"1\",\"3\"], value=0}" } }
curl -s -D- -u user:passwd -X POST --data @uc.json https://ourdomain.com/ourapp/rest/v3/subscriber/<id>/user/0 2>&1
22 : HTTP/1.1 200 OK^M Date: Wed, 15 Oct 2014 18:44:24 GMT^M Transfer-Encoding: chunked^M Content-Type: text/plain; charset=UTF-8^M ^M { "ErrorMessage" : { "errorMessage" : "Json validation failure: {level=\"error\", schema={\"loadingURI\":\"#\",\"pointer\":\"/properties/userConfig/properties/userType\"}, instance={\"pointer\":\"/userConfig/userType\"}, domain=\"validation\", keyword=\"enum\", message=\"instance does not match any enum value\", enum=[\"0\",\"1\",\"3\"], value=0}" } }
10.102.211.152 - - [15/Oct/2014:14:44:22 -0400] "POST /ourapp/rest/v3/subscriber/<id>/user/0 HTTP/1.1" 400 361
10.102.211.152 - - [15/Oct/2014:14:44:24 -0400] "POST /ourapp/rest/v3/subscriber/<id>/user/0 HTTP/1.1" 400 361
More context:
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