Blocked a frame with origin "http://NEXUSHOST:8081" from accessing a cross-origin frame

Sonatype Nexus Repository
1

Hi，
Something bothered me for a long time, I failed to upload the local jar package in the UI http://NEXUSHOST:8081/#browse/upload:maven-repository and return error information
Blocked a frame with origin “http://NEXUSHOST:8081” from accessing a cross-origin frame

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1111327×457 33.9 KB

Error log printed in nexus.log org.apache.commons.fileupload.FileUploadException: Early EOF and java.util.concurrent.TimeoutException: Idle timeout expired: 30000/30000 ms
Please suggest a way to mitigate the issue, thanks!

2

Hard to tell exactly from this… but it seems something is messed up with whatever networking has been put in front of Nexus Repo. If you’re using a reverse proxy be sure to configure it according to our recommendations: https://help.sonatype.com/display/NXRM3/Run+Behind+a+Reverse+Proxy

3

This error is not a bug. The same-origin policy is a security mechanism that ensures that window objects only have access to the informations they are authorized to get.

The window.postMessage() method provides a controlled mechanism to securely circumvent this Same-Origin Policy restriction. The window.postMessage() safely enables cross-origin communication between Window objects; e.g: between a page and an iframe embedded within it.

postMessage(message, targetOrigin)
postMessage(message, targetOrigin, [transfer])

targetOrigin - specifies what the origin of targetWindow must be for the event to be dispatched, either as the literal string “*” (indicating no preference) or as a URI.