1BIO_s_socket(3)                     OpenSSL                    BIO_s_socket(3)
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NAME

6       BIO_s_socket, BIO_new_socket - socket BIO
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SYNOPSIS

9        #include <openssl/bio.h>
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11        BIO_METHOD *BIO_s_socket(void);
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13        long BIO_set_fd(BIO *b, int fd, long close_flag);
14        long BIO_get_fd(BIO *b, int *c);
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16        BIO *BIO_new_socket(int sock, int close_flag);
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DESCRIPTION

19       BIO_s_socket() returns the socket BIO method. This is a wrapper round
20       the platform's socket routines.
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22       BIO_read() and BIO_write() read or write the underlying socket.
23       BIO_puts() is supported but BIO_gets() is not.
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25       If the close flag is set then the socket is shut down and closed when
26       the BIO is freed.
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28       BIO_set_fd() sets the socket of BIO b to fd and the close flag to
29       close_flag.
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31       BIO_get_fd() places the socket in c if it is not NULL, it also returns
32       the socket. If c is not NULL it should be of type (int *).
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34       BIO_new_socket() returns a socket BIO using sock and close_flag.
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NOTES

37       Socket BIOs also support any relevant functionality of file descriptor
38       BIOs.
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40       The reason for having separate file descriptor and socket BIOs is that
41       on some platforms sockets are not file descriptors and use distinct I/O
42       routines, Windows is one such platform. Any code mixing the two will
43       not work on all platforms.
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45       BIO_set_fd() and BIO_get_fd() are macros.
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RETURN VALUES

48       BIO_s_socket() returns the socket BIO method.
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50       BIO_set_fd() always returns 1.
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52       BIO_get_fd() returns the socket or -1 if the BIO has not been initial‐
53       ized.
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55       BIO_new_socket() returns the newly allocated BIO or NULL is an error
56       occurred.
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SEE ALSO

59       TBA
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630.9.8b                            2000-10-19                   BIO_s_socket(3)
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