cannot disable 'max-post-size' check for undertow listeners ----------------------------------------------------------- Key: WFLY-9675 URL: https://issues.jboss.org/browse/WFLY-9675 Project: WildFly Issue Type: Bug Components: Web (Undertow) Affects Versions: 11.0.0.Final Reporter: Chao Wang Assignee: Chao Wang Priority: Minor With EAP7.1.0.GA, there has been added a validator for 'max-post-size' attribute for listeners in undertow subsystem. This validator requires positive integer values starting with value 1. That means, you cannot disable 'max-post-size' for such listener using 0 value anymore. In EAP6.4 and EAP7.0, it was possible to disable 'max-post-size' check with 0 value. I understand that we might not want to allow user to set this to 0 value as it might be a potentional security risk. Still, maybe we should relax this restriction as it was possible to configure it that way in previous versions of EAP. Also there is a [Knowledge Base article|https://access.redhat.com/solutions/714173] regarding to this feature, which we should update in case we won't reconsider our position. Just for the record - quoting question from mailing list: {quote} Dear Experts, Based on KCS, the "max-post-size" in "http-listener" from "undertow" subsystem can be disabled by setting "0" to it, it worked for EAP 6.x and 7.0 GA. But in EAP 7.1.0 GA, it didn't work: ~~~ [standalone@localhost:9990 /] /subsystem=undertow/server=default-server/http-listener=default/:write-attribute(name=max-post-size,value=0) { "outcome" => "failed", "failure-description" => "WFLYCTL0117: 0 is an invalid value for parameter max-post-size. A minimum value of 1 is required", "rolled-back" => true } ~~~ By comparing schemas: ~~~ jboss-eap-7.0/docs/schema/wildfly-undertow_x_x.xsd: <xs:attribute name="max-post-size" type="xs:long" default="0"/> --- jboss-eap-7.1/docs/schema/wildfly-undertow_x_x.xsd: <xs:attribute name="max-post-size" type="xs:long" default="10485760"/> ~~~ The behaviour changed. And I found WFLY-6437 and JBEAP-3974, but failed to open links inside those. So can I ask if "max-post-size" can be disabled in EAP 7.1.0 GA and the reason if possible? Best Regards, Zhang Xu {quote}