local ffi = require "ffi" require "resty.openssl.include.ossl_typ" ffi.cdef [[ typedef struct bio_method_st BIO_METHOD; long BIO_ctrl(BIO *bp, int cmd, long larg, void *parg); BIO *BIO_new_mem_buf(const void *buf, int len); BIO *BIO_new(const BIO_METHOD *type); int BIO_free(BIO *a); const BIO_METHOD *BIO_s_mem(void); int BIO_read(BIO *b, void *data, int dlen); ]]