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org.apache.http.client.ClientProtocolException at org.apache.http.impl.client.InternalHttpClient.doExecute( at org.apache.http.impl.client.CloseableHttpClient.execute( at org.apache.http.impl.client.CloseableHttpClient.execute( at com.siva.demo.HttpProxyClient.main( by: org.apache.http.HttpException: Proxy chains are not supported. at org.apache.http.impl.execchain.MainClientExec.createTunnelToProxy( at org.apache.http.impl.execchain.MainClientExec.establishRoute( at org.apache.http.impl.execchain.MainClientExec.execute( at org.apache.http.impl.execchain.ProtocolExec.execute( at org.apache.http.impl.execchain.RetryExec.execute( at org.apache.http.impl.execchain.RedirectExec.execute( at org.apache.http.impl.client.InternalHttpClient.doExecute( ... 3 more