BIO_s_dgram_mem
in = BIO_new(BIO_s_dgram_mem());
out = BIO_new(BIO_s_dgram_mem());
in = BIO_new(BIO_s_dgram_mem());
out = BIO_new(BIO_s_dgram_mem());
const BIO_METHOD *BIO_s_dgram_mem(void);
next = BIO_new(BIO_s_dgram_mem());
if (!TEST_ptr(bio1 = bio2 = BIO_new(BIO_s_dgram_mem())))
BIO *bio = BIO_new(BIO_s_dgram_mem()), *rbio = NULL;