'Connection reset by peer' when uploading files
Written By
Aurél Förstner
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Issue
- You are encountering the following exception in the logs:
java.io.IOException: Connection reset by peer
-
Users cannot upload files and errors like the following are printed (some examples):
WARN [UploadServletRequestImpl:245] Unable to parse upload request: Processing of multipart/form-data request failed. Connection reset by peer
WARN [SecurityPortletContainerWrapper:414] User XXXX is not allowed to access URL https://mydomain.com/path/ and portlet com_liferay_document_library_web_portlet_DLAdminPortlet: User XXXX did not provide a valid CSRF token for com.liferay.portlet.SecurityPortletContainerWrapper
Environment
- Liferay DXP 7.0
- Liferay DXP 7.1
- Liferay DXP 7.2
- Liferay DXP 7.3
- Liferay DXP 7.4
- Liferay DXP Quarterly Releases
Resolution
- Connection reset by peer suggests that the TCP connection was broken by the other end or something during the network traffic.
- There is usually a network hardware, such as the load balancer, firewall, router, network security, or switch, which has an idle timeout for connections and will reset connections that are inactive for a period of time, or even if you abruptly abort the action.
- To determine if intermediate components are contributing to the problem, bypass them by accessing the application server directly.
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