BIO_s_socket man page on DragonFly

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BIO_S_SOCKET(3)		 BSD Library Functions Manual	       BIO_S_SOCKET(3)

NAME
     BIO_s_socket, BIO_new_socket — socket BIO

SYNOPSIS
     #include <openssl/bio.h>

     BIO_METHOD *
     BIO_s_socket(void);

     long
     BIO_set_fd(BIO *b, int fd, long close_flag);

     long
     BIO_get_fd(BIO *b, int *c);

     BIO *
     BIO_new_socket(int sock, int close_flag);

DESCRIPTION
     BIO_s_socket() returns the socket BIO method.  This is a wrapper around
     the platform's socket routines.

     BIO_read(3) and BIO_write(3) read or write the underlying socket.
     BIO_puts(3) is supported but BIO_gets(3) is not.

     If the close flag is set, then the socket is shut down and closed when
     the BIO is freed.

     BIO_set_fd() sets the socket of BIO b to fd and the close flag to
     close_flag.

     BIO_get_fd() places the socket in c if it is not NULL, it also returns
     the socket.  If c is not NULL it should be of type int *.

     BIO_new_socket() returns a socket BIO using sock and close_flag.

NOTES
     Socket BIOs also support any relevant functionality of file descriptor
     BIOs.

     The reason for having separate file descriptor and socket BIOs is that on
     some platforms, sockets are not file descriptors and use distinct I/O
     routines.	Windows is one such platform.  Any code mixing the two will
     not work on all platforms.

     BIO_set_fd() and BIO_get_fd() are macros.

RETURN VALUES
     BIO_s_socket() returns the socket BIO method.

     BIO_set_fd() always returns 1.

     BIO_get_fd() returns the socket or -1 if the BIO has not been initial‐
     ized.

     BIO_new_socket() returns the newly allocated BIO or NULL if an error
     occurred.

BSD				August 26, 2019				   BSD
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