1 files changed, 76 insertions, 0 deletions
diff --git a/openssl/doc/ssl/SSL_accept.pod b/openssl/doc/ssl/SSL_accept.pod
new file mode 100644
index 000000000..cc724c0d5
--- /dev/null
+++ b/openssl/doc/ssl/SSL_accept.pod
@@ -0,0 +1,76 @@
+=pod
+
+=head1 NAME
+
+SSL_accept - wait for a TLS/SSL client to initiate a TLS/SSL handshake
+
+=head1 SYNOPSIS
+
+ #include <openssl/ssl.h>
+
+ int SSL_accept(SSL *ssl);
+
+=head1 DESCRIPTION
+
+SSL_accept() waits for a TLS/SSL client to initiate the TLS/SSL handshake.
+The communication channel must already have been set and assigned to the
+B<ssl> by setting an underlying B<BIO>.
+
+=head1 NOTES
+
+The behaviour of SSL_accept() depends on the underlying BIO. 
+
+If the underlying BIO is B<blocking>, SSL_accept() will only return once the
+handshake has been finished or an error occurred, except for SGC (Server
+Gated Cryptography). For SGC, SSL_accept() may return with -1, but
+SSL_get_error() will yield B<SSL_ERROR_WANT_READ/WRITE> and SSL_accept()
+should be called again.
+
+If the underlying BIO is B<non-blocking>, SSL_accept() will also return
+when the underlying BIO could not satisfy the needs of SSL_accept()
+to continue the handshake, indicating the problem by the return value -1.
+In this case a call to SSL_get_error() with the
+return value of SSL_accept() will yield B<SSL_ERROR_WANT_READ> or
+B<SSL_ERROR_WANT_WRITE>. The calling process then must repeat the call after
+taking appropriate action to satisfy the needs of SSL_accept().
+The action depends on the underlying BIO. When using a non-blocking socket,
+nothing is to be done, but select() can be used to check for the required
+condition. When using a buffering BIO, like a BIO pair, data must be written
+into or retrieved out of the BIO before being able to continue.
+
+=head1 RETURN VALUES
+
+The following return values can occur:
+
+=over 4
+
+=item 1
+
+The TLS/SSL handshake was successfully completed, a TLS/SSL connection has been
+established.
+
+=item 0
+
+The TLS/SSL handshake was not successful but was shut down controlled and
+by the specifications of the TLS/SSL protocol. Call SSL_get_error() with the
+return value B<ret> to find out the reason.
+
+=item E<lt>0
+
+The TLS/SSL handshake was not successful because a fatal error occurred either
+at the protocol level or a connection failure occurred. The shutdown was
+not clean. It can also occur of action is need to continue the operation
+for non-blocking BIOs. Call SSL_get_error() with the return value B<ret>
+to find out the reason.
+
+=back
+
+=head1 SEE ALSO
+
+L<SSL_get_error(3)|SSL_get_error(3)>, L<SSL_connect(3)|SSL_connect(3)>,
+L<SSL_shutdown(3)|SSL_shutdown(3)>, L<ssl(3)|ssl(3)>, L<bio(3)|bio(3)>,
+L<SSL_set_connect_state(3)|SSL_set_connect_state(3)>,
+L<SSL_do_handshake(3)|SSL_do_handshake(3)>,
+L<SSL_CTX_new(3)|SSL_CTX_new(3)>
+
+=cut