SSL_CTX_clear_options
uint64_t SSL_CTX_clear_options(SSL_CTX *ctx, uint64_t op);
SSL_CTX_clear_options(ctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
SSL_CTX_clear_options(cctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
SSL_CTX_clear_options(cctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);
SSL_CTX_clear_options(sctx, SSL_OP_ENABLE_MIDDLEBOX_COMPAT);