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-rw-r--r--CHANGES.md6
-rw-r--r--doc/man3/BIO_f_ssl.pod15
-rw-r--r--doc/man3/BIO_s_connect.pod13
3 files changed, 24 insertions, 10 deletions
diff --git a/CHANGES.md b/CHANGES.md
index 39088d1bc7..ca60b9c2e4 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -172,6 +172,12 @@ OpenSSL 3.0
*David von Oheimb*
+ * BIO_do_connect and BIO_do_handshake have been extended:
+ If domain name resolution yields multiple IP addresses all of them are tried
+ after connect() failures.
+
+ *David von Oheimb*
+
* All of the low level RSA functions have been deprecated including:
RSA_new_method, RSA_size, RSA_security_bits, RSA_get0_pss_params,
diff --git a/doc/man3/BIO_f_ssl.pod b/doc/man3/BIO_f_ssl.pod
index 6b896e2a2b..8bbbb0436d 100644
--- a/doc/man3/BIO_f_ssl.pod
+++ b/doc/man3/BIO_f_ssl.pod
@@ -96,12 +96,15 @@ chain and calling SSL_shutdown() on its internal SSL
pointer.
BIO_do_handshake() attempts to complete an SSL handshake on the
-supplied BIO and establish the SSL connection. It returns 1
-if the connection was established successfully. A zero or negative
-value is returned if the connection could not be established, the
-call BIO_should_retry() should be used for non blocking connect BIOs
-to determine if the call should be retried. If an SSL connection has
-already been established this call has no effect.
+-supplied BIO and establish the SSL connection.
+For non-SSL BIOs the connection is done typically at TCP level.
+If domain name resolution yields multiple IP addresses all of them are tried
+after connect() failures.
+The function returns 1 if the connection was established successfully.
+A zero or negative value is returned if the connection could not be established.
+The call BIO_should_retry() should be used for non-blocking connect BIOs
+to determine if the call should be retried.
+If a connection has already been established this call has no effect.
=head1 NOTES
diff --git a/doc/man3/BIO_s_connect.pod b/doc/man3/BIO_s_connect.pod
index 24f1120625..d5a909dcd2 100644
--- a/doc/man3/BIO_s_connect.pod
+++ b/doc/man3/BIO_s_connect.pod
@@ -94,11 +94,16 @@ non blocking I/O is set during the connect process.
BIO_new_connect() combines BIO_new() and BIO_set_conn_hostname() into
a single call: that is it creates a new connect BIO with B<name>.
-BIO_do_connect() attempts to connect the supplied BIO. It returns 1
-if the connection was established successfully. A zero or negative
-value is returned if the connection could not be established, the
-call BIO_should_retry() should be used for non blocking connect BIOs
+BIO_do_connect() attempts to connect the supplied BIO.
+This performs an SSL/TLS handshake as far as supported by the BIO.
+For non-SSL BIOs the connection is done typically at TCP level.
+If domain name resolution yields multiple IP addresses all of them are tried
+after connect() failures.
+The function returns 1 if the connection was established successfully.
+A zero or negative value is returned if the connection could not be established.
+The call BIO_should_retry() should be used for non blocking connect BIOs
to determine if the call should be retried.
+If a connection has already been established this call has no effect.
=head1 NOTES