Sourced from httpclient5's changelog.

Release 5.1.2

This is an emergency release that fixes a regression introduced in the previous release that can lead to a connection leak when executing requests with a non-repeatable streaming entity with the classic (blocking) HttpClient. Async and minimal HttpClient implementations are not affected by the regression.

Change Log

• HTTPCLIENT-2184: Fixed regression in the connection reuse logic of the classic (blocking) request execution pipeline.

Release 5.1.1

This release upgrades HttpCore to the latest 5.1 version and fixes a number of issues found since release 5.1.

Change Log

• Don't initialize AtomicReference to its default value. Contributed by Gary Gregory

• Corrected resolution of the target host in DefaultUserTokenHandler. Contributed by Oleg Kalnichevski

• HTTPCLIENT-2177: automatically force HTTP/1.1 protocol policy when executing requests via a proxy tunnel. Contributed by Oleg Kalnichevski

• HTTPCLIENT-2177: fixed incorrect route state tracking by the async connect executor when negotiating a tunnel via a proxy. Contributed by Oleg Kalnichevski

• HTTPCLIENT-2177: keep successful tunnel connections alive regardless of Connection: close. Contributed by Oleg Kalnichevski

• HTTPCLIENT-2173: async pooling connection manager to close half-open connection gracefully. Contributed by Oleg Kalnichevski

• Don't retry a request for NoRouteToHostException. Contributed by Jaikiran Pai

• HTTPCLIENT-2170: Classic protocol layer no longer releases the underlying connection back to the pool prematurely while the NTLM handshake is still ongoing.

... (truncated)

• 67fe69e HttpClient 5.1.2 release
• ec74657 HTTPCLIENT-2079: version.properties contains non-interpolated value
• 345dbd6 Updated release notes for HttpClient 5.1.2 release
• c2240d5 HTTPCLIENT-2184: Fix classic client connection reuse
• 1d5754d Upgraded HttpClient version to 5.1.2-SNAPSHOT
• 9647bf9 Updated release notes for HttpClient 5.1.1 release
• 7c4e865 Don't initialize AtomicReference to its default value.
• f122766 Upgraded HttpCore to version 5.1.2
• 8247d30 Always bind the exchange ID to the execution context
• f87bb75 Corrected resolution of the target host in DefaultUserTokenHandler
• Additional commits viewable in compare view

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