Comments added.
diff --git a/ssl/ssl_lib.c b/ssl/ssl_lib.c
index bf1c900..816afb2 100644
--- a/ssl/ssl_lib.c
+++ b/ssl/ssl_lib.c
@@ -1396,6 +1396,15 @@
if (BIO_should_read(bio))
return(SSL_ERROR_WANT_READ);
else if (BIO_should_write(bio))
+ /* This one doesn't make too much sense ... We never try
+ * to write to the rbio, and an application program where
+ * rbio and wbio are separate couldn't even know what it
+ * should wait for.
+ * However if we ever set s->rwstate incorrectly
+ * (so that we have SSL_want_read(s) instead of
+ * SSL_want_write(s)) and rbio and wbio *are* the same,
+ * this test works around that bug; so it might be safer
+ * to keep it. */
return(SSL_ERROR_WANT_WRITE);
else if (BIO_should_io_special(bio))
{
@@ -1413,6 +1422,7 @@
if (BIO_should_write(bio))
return(SSL_ERROR_WANT_WRITE);
else if (BIO_should_read(bio))
+ /* See above (SSL_want_read(s) with BIO_should_write(bio)) */
return(SSL_ERROR_WANT_READ);
else if (BIO_should_io_special(bio))
{
