ssl: do not enable OpenSSL::SSL::OP_ALL by default #767
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Respect the SSL options set by default by SSL_CTX() and by the system-wide OpenSSL configuration file. OpenSSL::SSL::SSLContext#initialize currently adds OpenSSL::SSL::OP_ALL on top of the default SSL options. Let's stop doing it. OpenSSL::SSL::OP_ALL is a set of options that changes OpenSSL's behavior to workaround various TLS implementation bugs. Using it is considered usually safe, but is not completely harmless.
Apply SSL options set in DEFAULT_PARAMS without clearing existing options. It currently clears options in order to avoid setting one of the options included in OpenSSL::SSL::OP_ALL unless explicitly specified, namely OpenSSL::SSL::OP_DONT_INSERT_EMPTY_FRAGMENTS. Now that OpenSSL::SSL::OP_ALL has been removed from SSLContext#initialize, it is no longer necessary.
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Respect the SSL options set by default by
SSL_CTX()or by the system-wide OpenSSL configuration file.OpenSSL::SSL::SSLContext#initializecurrently addsOpenSSL::SSL::OP_ALLon top of the default SSL options. Let's stop doing it.OpenSSL::SSL::OP_ALLis a set of options that changes OpenSSL's behavior to workaround various TLS implementation bugs. Using it is considered usually safe, but is not completely harmless.Also:
ssl: do not clear existing SSL options in
SSLContext#set_paramsApply SSL options set in
DEFAULT_PARAMSwithout clearing existing options, which may be set by a system-wide configuration file.With a fresh installation of OpenSSL 3.3.1, this change will enable the
OpenSSL::SSL::OP_ENABLE_MIDDLEBOX_COMPAToption for users ofSSLContext#set_params.The last commit in this PR fixes #765.