{"id":49475,"date":"2021-11-08T15:48:48","date_gmt":"2021-11-08T22:48:48","guid":{"rendered":"https:\/\/ephesoft.com\/docs\/?p=49475"},"modified":"2022-04-01T10:10:51","modified_gmt":"2022-04-01T17:10:51","slug":"ajp-protocol-error-invalid-message-received","status":"publish","type":"post","link":"https:\/\/ephesoft.com\/docs\/ajp-protocol-error-invalid-message-received\/","title":{"rendered":"AJP Protocol Error &#8211; \u201cInvalid Message Received\u201d"},"content":{"rendered":"<p><b>Applies to<\/b><span style=\"font-weight: 400\"><strong>:<\/strong> <em>Transact 2020.1.06 and above.<\/em><\/span><\/p>\n<h2><b>Issue<\/b><\/h2>\n<p><span style=\"font-weight: 400\">You may receive an error message for unauthorized or misconfigured AJP connections, such as:<\/span><\/p>\n<p><span style=\"font-weight: 400\"><code>ERROR org.apache.coyote.ajp.AjpMessage- Invalid message received with signature<\/code><\/span><\/p>\n<h2><b>Root Cause<\/b><\/h2>\n<p><span style=\"font-weight: 400\">The updated Tomcat server in Transact 2020.1.06 introduces tightened security around using the AJP protocol. <\/span><span style=\"font-weight: 400\">An incorrectly configured or unauthorized system with invalid AJP messaging may be sending messages to your Tomcat server.<\/span><\/p>\n<h2><b>Solution<\/b><\/h2>\n<p><span style=\"font-weight: 400\">If you do not need AJP messaging, disable the AJP protocol in Tomcat. For instructions on this, see <a href=\"https:\/\/ephesoft.com\/docs\/how-to-disable-the-ajp-protocol-in-tomcat\">How to Disable the AJP Protocol in Tomcat<\/a>.<\/span><\/p>\n<p><span style=\"font-weight: 400\">\u00a0If you are using AJP messaging, you may need to reconfigure connections to the Tomcat AJP endpoint so they align with the updated Tomcat AJP specifications. E<\/span><span style=\"font-weight: 400\">nsure your AJP Connector secret is valid with both Tomcat and the front-end web server (e.g. Apache, Nginx, IIS). This may require you to upgrade the front-end web server to a version that supports the revised AJP Connector options.<\/span><\/p>\n<p><span style=\"font-weight: 400\">If you are using Apache bundled with Transact, we recommend transitioning to a separate front-end web server that meets your needs, or configuring Tomcat to provide direct access to Transact.\u00a0<\/span><\/p>\n<p><b>Note:<\/b> <span style=\"font-weight: 400\">AJP connections are not typically needed for Transact by default. These connections are sometimes used when web servers or load balancers are requirements for integration.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">For more information, see <\/span><a href=\"https:\/\/tomcat.apache.org\/tomcat-8.5-doc\/config\/ajp.html\"><span style=\"font-weight: 400\">Apache Tomcat 8 Configuration Reference: The AJP Connector<\/span><\/a><span style=\"font-weight: 400\">.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Applies to: Transact 2020.1.06 and above. Issue You may receive an error message for unauthorized or misconfigured AJP connections, such [&hellip;]<\/p>\n","protected":false},"author":88,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12437],"tags":[1430],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v19.0 (Yoast SEO v22.1) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>AJP Protocol Error - \u201cInvalid Message Received\u201d | Ephesoft Docs<\/title>\n<meta name=\"robots\" content=\"noindex, follow\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"AJP Protocol Error - \u201cInvalid Message Received\u201d\" \/>\n<meta property=\"og:description\" content=\"Applies to: Transact 2020.1.06 and above. 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