[jira] [Created] (NIFI-13619) Switch web-client Implementation from OkHttp to Java HttpClient

["David Handermann (Jira)" <ji...@apache.org>]

David Handermann created NIFI-13619:
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             Summary: Switch web-client Implementation from OkHttp to Java HttpClient
                 Key: NIFI-13619
                 URL: https://issues.apache.org/jira/browse/NIFI-13619
             Project: Apache NiFi
          Issue Type: Improvement
          Components: Core Framework
            Reporter: David Handermann
            Assignee: David Handermann


The nifi-web-client library currently implements the nifi-web-client-api using the OkHttp library. The nifi-web-client library powers the WebClientServiceProvider Controller Service, which several Processors use for HTTP operations. OkHttp 4 is written in Kotlin and depends on several Kotlin standard libraries. Although this approach provided broad compatibility in initial versions supported Java 8, Java 9 and following have an HttpClient class and supporting components. The Java HttpClient class supports all of the standard operations required for the nifi-web-client library, including support for HTTP/2 with TLS and proxy authentication. Switching the nifi-web-client library away from OkHttp removes the several runtime dependencies and provides general compatibility with current Java versions for NiFi 2.



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