5 BIO_s_socket - socket BIO
9 #include <openssl/bio.h>
11 BIO_METHOD * BIO_s_socket(void);
13 #define BIO_set_fd(b,fd,c) BIO_int_ctrl(b,BIO_C_SET_FD,c,fd)
14 #define BIO_get_fd(b,c) BIO_ctrl(b,BIO_C_GET_FD,0,(char *)c)
16 BIO *BIO_new_socket(int sock, int close_flag);
20 BIO_s_socket() returns the socket BIO method. This is a wrapper
21 round the platform's socket routines.
23 BIO_read() and BIO_write() read or write the underlying socket.
24 BIO_puts() is supported but BIO_gets() is not.
26 If the close flag is set then the socket is shut down and closed
27 when the BIO is freed.
29 BIO_set_fd() sets the socket of BIO B<b> to B<fd> and the close
32 BIO_get_fd() places the socket in B<c> if it is not NULL, it also
33 returns the socket . If B<c> is not NULL it should be of type (int *).
35 BIO_new_socket() returns a socket BIO using B<sock> and B<close_flag>.
39 Socket BIOs also support any relevant functionality of file descriptor
42 The reason for having separate file descriptor and socket BIOs is that on some
43 platforms sockets are not file descriptors and use distinct I/O routines,
44 Windows is one such platform. Any code mixing the two will not work on
49 BIO_s_socket() returns the socket BIO method.
51 BIO_set_fd() always returns 1.
53 BIO_get_fd() returns the socket or -1 if the BIO has not been
56 BIO_new_socket() returns the newly allocated BIO or NULL is an error