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https://issues.apache.org/jira/browse/HTTPCLIENT-2187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17446873#comment-17446873
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Michael Osipov commented on HTTPCLIENT-2187:
--------------------------------------------
This means that {{CONNECT}} does not work?
> Classic proxy handling for HTTPS seems broken as of 5.1.1+
> ----------------------------------------------------------
>
> Key: HTTPCLIENT-2187
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-2187
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient (classic)
> Affects Versions: 5.1.1, 5.1.2, 5.2-alpha1
> Reporter: Tim te Beek
> Priority: Major
>
> Classic proxy handling for HTTPS seems to have broken as of 5.1.1+, as seen
> here: https://github.com/wiremock/wiremock/pull/1698
> To give just one sample, we now see a failure stacktrace such as this:
> ```
> java.lang.IllegalStateException: Endpoint is not connected
> at org.apache.hc.core5.util.Asserts.check(Asserts.java:38)
> at
> org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager$InternalConnectionEndpoint.getValidatedPoolEntry(PoolingHttpClientConnectionManager.java:637)
> at
> org.apache.hc.client5.http.impl.io.PoolingHttpClientConnectionManager.upgrade(PoolingHttpClientConnectionManager.java:454)
> at
> org.apache.hc.client5.http.impl.classic.InternalExecRuntime.upgradeTls(InternalExecRuntime.java:190)
> at
> org.apache.hc.client5.http.impl.classic.ConnectExec.execute(ConnectExec.java:172)
> at
> org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
> at
> org.apache.hc.client5.http.impl.classic.ProtocolExec.execute(ProtocolExec.java:197)
> at
> org.apache.hc.client5.http.impl.classic.ExecChainElement.execute(ExecChainElement.java:51)
> at
> org.apache.hc.client5.http.impl.classic.InternalHttpClient.doExecute(InternalHttpClient.java:170)
> at
> org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:75)
> at
> org.apache.hc.client5.http.impl.classic.CloseableHttpClient.execute(CloseableHttpClient.java:89)
> at
> com.github.tomakehurst.wiremock.junit5.JUnitJupiterExtensionJvmProxyNonStaticProgrammaticTest.getContent(JUnitJupiterExtensionJvmProxyNonStaticProgrammaticTest.java:67)
> at
> com.github.tomakehurst.wiremock.junit5.JUnitJupiterExtensionJvmProxyNonStaticProgrammaticTest.configures_jvm_proxy_and_enables_browser_proxying_https(JUnitJupiterExtensionJvmProxyNonStaticProgrammaticTest.java:63)
> ```
> That test basically calls this class to set the System proxy properties:
> [https://github.com/wiremock/wiremock/blob/master/src/main/java/com/github/tomakehurst/wiremock/http/JvmProxyConfigurer.java#L48]
> For HTTP that still works fine, for HTTPS it now fails.
>
> There were some recent changes in 5.1.1 related to proxy handling & keep
> alive for async:
> [https://issues.apache.org/jira/projects/HTTPCLIENT/issues/HTTPCLIENT-2177]
> [https://github.com/apache/httpcomponents-client/compare/50f93ec18be8d6f49138825356051c4c0b60dce4...90f69c87b27b721ea8f0e23bdb4baf92bd7cde06]
> However, we're using classic still, and seeing the error above, so not sure
> it's related.
> Could anyone look into why we are now having these issues with only a patch
> version bump?
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