SSL_get_fd.3ossl 5.3 KB

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  133. .\" ========================================================================
  134. .\"
  135. .IX Title "SSL_GET_FD 3ossl"
  136. .TH SSL_GET_FD 3ossl "2024-09-03" "3.3.2" "OpenSSL"
  137. .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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  139. .if n .ad l
  140. .nh
  141. .SH "NAME"
  142. SSL_get_fd, SSL_get_rfd, SSL_get_wfd \- get file descriptor linked to an SSL object
  143. .SH "SYNOPSIS"
  144. .IX Header "SYNOPSIS"
  145. .Vb 1
  146. \& #include <openssl/ssl.h>
  147. \&
  148. \& int SSL_get_fd(const SSL *ssl);
  149. \& int SSL_get_rfd(const SSL *ssl);
  150. \& int SSL_get_wfd(const SSL *ssl);
  151. .Ve
  152. .SH "DESCRIPTION"
  153. .IX Header "DESCRIPTION"
  154. \&\fBSSL_get_fd()\fR returns the file descriptor which is linked to \fBssl\fR.
  155. \&\fBSSL_get_rfd()\fR and \fBSSL_get_wfd()\fR return the file descriptors for the
  156. read or the write channel, which can be different. If the read and the
  157. write channel are different, \fBSSL_get_fd()\fR will return the file descriptor
  158. of the read channel.
  159. .SH "RETURN VALUES"
  160. .IX Header "RETURN VALUES"
  161. The following return values can occur:
  162. .IP "\-1" 4
  163. .IX Item "-1"
  164. The operation failed, because the underlying \s-1BIO\s0 is not of the correct type
  165. (suitable for file descriptors).
  166. .IP ">=0" 4
  167. .IX Item ">=0"
  168. The file descriptor linked to \fBssl\fR.
  169. .SH "SEE ALSO"
  170. .IX Header "SEE ALSO"
  171. \&\fBSSL_set_fd\fR\|(3), \fBssl\fR\|(7) , \fBbio\fR\|(7)
  172. .SH "COPYRIGHT"
  173. .IX Header "COPYRIGHT"
  174. Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
  175. .PP
  176. Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use
  177. this file except in compliance with the License. You can obtain a copy
  178. in the file \s-1LICENSE\s0 in the source distribution or at
  179. <https://www.openssl.org/source/license.html>.