MessageHTTPUploader.performUpload: [ConnectionShutdownException]

Sending AS2 message to Partner then return message:
MessageHTTPUploader.performUpload: [ConnectionShutdownException]
How can I find out the detailed cause of the error?

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AS2

Comments

Without log samples, it's hard to determine the issue. But first test with Mendelson's test server and also make sure firewalls, local to the machine and network, are not the issue. If you can exchange data with Mendelson's test server, then you know your config it good.