:-'Generic Commit'

dropshell-tool/openssl-1.1.1w/doc/man3/SSL_set_fd.pod

@@ -0,0 +1,74 @@
+=pod
+
+=head1 NAME
+
+SSL_set_fd, SSL_set_rfd, SSL_set_wfd - connect the SSL object with a file descriptor
+
+=head1 SYNOPSIS
+
+ #include <openssl/ssl.h>
+
+ int SSL_set_fd(SSL *ssl, int fd);
+ int SSL_set_rfd(SSL *ssl, int fd);
+ int SSL_set_wfd(SSL *ssl, int fd);
+
+=head1 DESCRIPTION
+
+SSL_set_fd() sets the file descriptor B<fd> as the input/output facility
+for the TLS/SSL (encrypted) side of B<ssl>. B<fd> will typically be the
+socket file descriptor of a network connection.
+
+When performing the operation, a B<socket BIO> is automatically created to
+interface between the B<ssl> and B<fd>. The BIO and hence the SSL engine
+inherit the behaviour of B<fd>. If B<fd> is nonblocking, the B<ssl> will
+also have nonblocking behaviour.
+
+If there was already a BIO connected to B<ssl>, BIO_free() will be called
+(for both the reading and writing side, if different).
+
+SSL_set_rfd() and SSL_set_wfd() perform the respective action, but only
+for the read channel or the write channel, which can be set independently.
+
+=head1 RETURN VALUES
+
+The following return values can occur:
+
+=over 4
+
+=item Z<>0
+
+The operation failed. Check the error stack to find out why.
+
+=item Z<>1
+
+The operation succeeded.
+
+=back
+
+=head1 NOTES
+
+On Windows, a socket handle is a 64-bit data type (UINT_PTR), which leads to a
+compiler warning (conversion from 'SOCKET' to 'int', possible loss of data) when
+passing the socket handle to SSL_set_*fd(). For the time being, this warning can
+safely be ignored, because although the Microsoft documentation claims that the
+upper limit is INVALID_SOCKET-1 (2^64 - 2), in practice the current socket()
+implementation returns an index into the kernel handle table, the size of which
+is limited to 2^24.
+
+
+=head1 SEE ALSO
+
+L<SSL_get_fd(3)>, L<SSL_set_bio(3)>,
+L<SSL_connect(3)>, L<SSL_accept(3)>,
+L<SSL_shutdown(3)>, L<ssl(7)> , L<bio(7)>
+
+=head1 COPYRIGHT
+
+Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.
+
+Licensed under the OpenSSL license (the "License").  You may not use
+this file except in compliance with the License.  You can obtain a copy
+in the file LICENSE in the source distribution or at
+L<https://www.openssl.org/source/license.html>.
+
+=cut