The following test failed in the JDK19 CI:

sun/net/www/protocol/https/HttpsURLConnection/B6216082.java

Here's a snippet from the log file:

#section:main
----------messages:(5/251)----------
command: main B6216082
reason: User specified action: run main/othervm B6216082
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base --add-exports java.base/sun.net.www=ALL-UNNAMED
elapsed time (seconds): 1.31
----------configuration:(4/99)----------
Boot Layer
  add modules: java.base
  add exports: java.base/sun.net.www ALL-UNNAMED

----------System.out:(3/75)----------
100.101.199.161
https server listen on: 39879
https proxy listen on: 35221
----------System.err:(21/1569)----------
java.net.SocketException: Unexpected end of file from server
at java.base/sun.net.www.http.HttpClient.parseHTTPHeader(HttpClient.java:936)
at java.base/sun.net.www.http.HttpClient.parseHTTP(HttpClient.java:759)
at java.base/sun.net.www.protocol.http.HttpURLConnection.doTunneling0(HttpURLConnection.java:2173)
at java.base/sun.net.www.protocol.http.HttpURLConnection.doTunneling(HttpURLConnection.java:2135)
at java.base/sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1664)
at java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1588)
at java.base/java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:529)
at java.base/sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:308)
at B6216082.makeHttpCall(B6216082.java:183)
at B6216082.main(B6216082.java:90)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:828)

JavaTest Message: Test threw exception: java.net.SocketException: Unexpected end of file from server
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.net.SocketException: Unexpected end of file from server
----------rerun:(38/8066)*----------

I'm starting this bug as a P2 since it looks like a regression.