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Clarify behaviour of SSL_write() by mentioning SSL_MODE_ENABLE_PARTIAL_WRITE

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flag as discussed on the mailing list.
This commit is contained in:
Lutz Jänicke 2001-05-11 09:53:10 +00:00
parent 3351b8d007
commit 4b3270f78e
1 changed files with 11 additions and 0 deletions
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11
doc/ssl/SSL_write.pod
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@ -50,6 +50,17 @@ 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.
SSL_write() will only return with success, when the complete contents
of B<buf> of length B<num> has been written. This default behaviour
can be changed with the SSL_MODE_ENABLE_PARTIAL_WRITE option of
L<SSL_CTX_set_mode(3)|SSL_CTX_set_mode(3)>. When this flag is set,
SSL_write() will also return with success, when a partial write has been
successfully completed. In this case the SSL_write() operation is considered
completed. The bytes are sent and a new SSL_write() operation with a new
buffer (with the already sent bytes removed) must be started.
A partial write is performed with the size of a message block, which is
16kB for SSLv3/TLSv1.
=head1 WARNING
When an SSL_write() operation has to be repeated because of