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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