Explicitly set the netty SSL Provider to JDK#116
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This code uses the FATAL_ALERT failure behavior, which is only supported by the JDK ssl provider. However, if no SSL Provider is set, it is environment dependent whether the JDK or OpenSSL provider is used. This change Explicitly sets the ssl provider to JDK. This fixes an issue where servers might fail on start up in ReferenceCountedOpenSslContext with "OpenSSL provider does not support FATAL_ALERT behavior" if they get created with OPEN_SSL as the provider. Netty code pointers: https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/JdkSslContext.java#L420 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/ReferenceCountedOpenSslContext.java#L777 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/SslContext.java#L832 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/SslContext.java#L127-L135
tdcmeehan
approved these changes
Jun 27, 2025
This was referenced Jul 30, 2025
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This code uses the FATAL_ALERT failure behavior, which is only supported by the JDK ssl provider. However, if no SSL Provider is set, it is environment dependent whether the JDK or OpenSSL provider is used. This change Explicitly sets the ssl provider to JDK.
This fixes an issue where servers might fail on start up in ReferenceCountedOpenSslContext with "OpenSSL provider does not support FATAL_ALERT behavior" if they get created with OPEN_SSL as the provider.
Netty code pointers:
https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/JdkSslContext.java#L420 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/ReferenceCountedOpenSslContext.java#L777 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/SslContext.java#L832 https://github.com/netty/netty/blob/4.1/handler/src/main/java/io/netty/handler/ssl/SslContext.java#L127-L135