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-rw-r--r--doc/crypto/BIO_s_bio.pod3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/crypto/BIO_s_bio.pod b/doc/crypto/BIO_s_bio.pod
index 8d0a55a025c7..9fe88b26b0af 100644
--- a/doc/crypto/BIO_s_bio.pod
+++ b/doc/crypto/BIO_s_bio.pod
@@ -120,6 +120,9 @@ the application then waits for data to be available on the underlying transport
before flushing the write buffer it will never succeed because the request was
never sent!
+BIO_eof() is true if no data is in the peer BIO and the peer BIO has been
+shutdown.
+
=head1 RETURN VALUES
BIO_new_bio_pair() returns 1 on success, with the new BIOs available in