Netty4ClientHttpRequestFactory should use SSL if port is 443 or scheme is https [SPR-14889]

[spring-projects-issues]

Mark Paluch opened SPR-14889 and commented

Currently, Netty4ClientHttpRequestFactory uses SSL if either the port is 443 or not port is given and the scheme is https. URIs having a port specified other than 443 but using https use plain-text connections so SSL is not applied.

So https://localhost:8200 connects via plaintext but should use SSL.

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Affects: 4.3.4

Issue Links:

• Netty4ClientHttpRequestFactory should configure a default SslContext [SPR-14744] #19310 Netty4ClientHttpRequestFactory should configure a default SslContext
• Netty4ClientHttpRequestFactory should use SNI for TLS connections [SPR-15101] #19668 Netty4ClientHttpRequestFactory should use SNI for TLS connections

Referenced from: pull request #1235, and commits 6261106, 5285f53