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[dragonfly.git] / secure / lib / libcrypto / man / BIO_s_socket.3
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138.\" ======================================================================
139.\"
140.IX Title "BIO_s_socket 3"
141.TH BIO_s_socket 3 "0.9.7a" "2003-02-19" "OpenSSL"
142.UC
143.SH "NAME"
144BIO_s_socket, BIO_new_socket \- socket \s-1BIO\s0
145.SH "SYNOPSIS"
146.IX Header "SYNOPSIS"
147.Vb 1
148\& #include <openssl/bio.h>
149.Ve
150.Vb 1
151\& BIO_METHOD *BIO_s_socket(void);
152.Ve
153.Vb 2
154\& long BIO_set_fd(BIO *b, int fd, long close_flag);
155\& long BIO_get_fd(BIO *b, int *c);
156.Ve
157.Vb 1
158\& BIO *BIO_new_socket(int sock, int close_flag);
159.Ve
160.SH "DESCRIPTION"
161.IX Header "DESCRIPTION"
162\&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method. This is a wrapper
163round the platform's socket routines.
164.PP
165\&\fIBIO_read()\fR and \fIBIO_write()\fR read or write the underlying socket.
166\&\fIBIO_puts()\fR is supported but \fIBIO_gets()\fR is not.
167.PP
168If the close flag is set then the socket is shut down and closed
169when the \s-1BIO\s0 is freed.
170.PP
171\&\fIBIO_set_fd()\fR sets the socket of \s-1BIO\s0 \fBb\fR to \fBfd\fR and the close
172flag to \fBclose_flag\fR.
173.PP
174\&\fIBIO_get_fd()\fR places the socket in \fBc\fR if it is not \s-1NULL\s0, it also
175returns the socket. If \fBc\fR is not \s-1NULL\s0 it should be of type (int *).
176.PP
177\&\fIBIO_new_socket()\fR returns a socket \s-1BIO\s0 using \fBsock\fR and \fBclose_flag\fR.
178.SH "NOTES"
179.IX Header "NOTES"
180Socket BIOs also support any relevant functionality of file descriptor
181BIOs.
182.PP
183The reason for having separate file descriptor and socket BIOs is that on some
184platforms sockets are not file descriptors and use distinct I/O routines,
185Windows is one such platform. Any code mixing the two will not work on
186all platforms.
187.PP
188\&\fIBIO_set_fd()\fR and \fIBIO_get_fd()\fR are macros.
189.SH "RETURN VALUES"
190.IX Header "RETURN VALUES"
191\&\fIBIO_s_socket()\fR returns the socket \s-1BIO\s0 method.
192.PP
193\&\fIBIO_set_fd()\fR always returns 1.
194.PP
195\&\fIBIO_get_fd()\fR returns the socket or \-1 if the \s-1BIO\s0 has not been
196initialized.
197.PP
198\&\fIBIO_new_socket()\fR returns the newly allocated \s-1BIO\s0 or \s-1NULL\s0 is an error
199occurred.
200.SH "SEE ALSO"
201.IX Header "SEE ALSO"
202\&\s-1TBA\s0