java.net.HttpRetryException: cannot retry due to server authentication, in streaming mode

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I faced the same issue when using SimpleClientHttpRequestFactory. Solved it by setting

SimpleClientHttpRequestFactory requestFactory = new SimpleClientHttpRequestFactory();
requestFactory.setOutputStreaming(false);
return requestFactory;

The problem is due to chunking and subsequent retry mechanism incase of authentication.

You can also disable chunks using HttpClientPolicy

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