#include <bio.h>
      
      Data Fields | 
         |
| BIO_METHOD * | method | 
| long(* | callback )(struct bio_st *, int, const char *, int, long, long) | 
| char * | cb_arg | 
| int | init | 
| int | shutdown | 
| int | flags | 
| int | retry_reason | 
| int | num | 
| void * | ptr | 
| bio_st * | next_bio | 
| bio_st * | prev_bio | 
| int | references | 
| unsigned long | num_read | 
| unsigned long | num_write | 
| CRYPTO_EX_DATA | ex_data | 
               
               
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