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134 .\" ========================================================================
136 .IX Title "BIO_s_socket 3"
137 .TH BIO_s_socket 3 "2000-10-19" "1.1.0-dev" "OpenSSL"
138 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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143 BIO_s_socket, BIO_new_socket \- socket BIO
147 .IX Header "SYNOPSIS"
149 \& #include <openssl/bio.h>
151 \& BIO_METHOD *BIO_s_socket(void);
153 \& long BIO_set_fd(BIO *b, int fd, long close_flag);
154 \& long BIO_get_fd(BIO *b, int *c);
156 \& BIO *BIO_new_socket(int sock, int close_flag);
159 .IX Header "DESCRIPTION"
160 \&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method. This is a wrapper
161 round the platform's socket routines.
163 \&\fIBIO_read()\fR and \fIBIO_write()\fR read or write the underlying socket.
164 \&\fIBIO_puts()\fR is supported but \fIBIO_gets()\fR is not.
166 If the close flag is set then the socket is shut down and closed
167 when the \s-1BIO\s0 is freed.
169 \&\fIBIO_set_fd()\fR sets the socket of \s-1BIO\s0 \fBb\fR to \fBfd\fR and the close
170 flag to \fBclose_flag\fR.
172 \&\fIBIO_get_fd()\fR places the socket in \fBc\fR if it is not \s-1NULL\s0, it also
173 returns the socket. If \fBc\fR is not \s-1NULL\s0 it should be of type (int *).
175 \&\fIBIO_new_socket()\fR returns a socket \s-1BIO\s0 using \fBsock\fR and \fBclose_flag\fR.
178 Socket BIOs also support any relevant functionality of file descriptor
181 The reason for having separate file descriptor and socket BIOs is that on some
182 platforms sockets are not file descriptors and use distinct I/O routines,
183 Windows is one such platform. Any code mixing the two will not work on
186 \&\fIBIO_set_fd()\fR and \fIBIO_get_fd()\fR are macros.
188 .IX Header "RETURN VALUES"
189 \&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method.
191 \&\fIBIO_set_fd()\fR always returns 1.
193 \&\fIBIO_get_fd()\fR returns the socket or \-1 if the \s-1BIO\s0 has not been
196 \&\fIBIO_new_socket()\fR returns the newly allocated \s-1BIO\s0 or \s-1NULL\s0 is an error
199 .IX Header "SEE ALSO"