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This commit is contained in:
Lutz Jänicke
2001-03-08 17:24:02 +00:00
parent a2b03690a8
commit b72ff47037
7 changed files with 57 additions and 15 deletions
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17
doc/ssl/SSL_write.pod
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@@ -18,11 +18,19 @@ B<ssl> connection.
=head1 NOTES
If necessary, SSL_write() will negotiate a TLS/SSL session, if
not already explicitly performed by SSL_connect() or SSL_accept(). If the
not already explicitly performed by L<SSL_connect(3)|SSL_connect(3)> or
L<SSL_accept(3)|SSL_accept(3)>. If the
peer requests a re-negotiation, it will be performed transparently during
the SSL_write() operation. The behaviour of SSL_write() depends on the
underlying BIO.
For the transparent negotiation to succeed, the B<ssl> must have been
initialized to client or server mode. This is not the case if a generic
method is being used (see L<SSL_CTX_new(3)|SSL_CTX_new(3)>, so that
L<SSL_set_connect_state(3)|SSL_set_connect_state(3)> or SSL_set_accept_state()
must be used before the first call to an L<SSL_read(3)|SSL_read(3)>
or SSL_write() function.
If the underlying BIO is B<blocking>, SSL_write() will only return, once the
write operation has been finished or an error occurred, except when a
renegotiation take place, in which case a SSL_ERROR_WANT_READ may occur.
@@ -31,7 +39,8 @@ L<SSL_CTX_set_mode(3)|SSL_CTX_set_mode(3)> call.
If the underlying BIO is B<non-blocking>, SSL_write() will also return,
when the underlying BIO could not satisfy the needs of SSL_write()
to continue the operation. In this case a call to SSL_get_error() with the
to continue the operation. In this case a call to
L<SSL_get_error(3)|SSL_get_error(3)> with the
return value of SSL_write() will yield B<SSL_ERROR_WANT_READ> or
B<SSL_ERROR_WANT_WRITE>. As at any time a re-negotiation is possible, a
call to SSL_write() can also cause read operations! The calling process
@@ -74,7 +83,9 @@ return value B<ret> to find out the reason.
=head1 SEE ALSO
L<SSL_get_error(3)|SSL_get_error(3)>, L<SSL_read(3)|SSL_read(3)>,
L<SSL_CTX_set_mode(3)|SSL_CTX_set_mode(3)>,
L<SSL_CTX_set_mode(3)|SSL_CTX_set_mode(3)>, L<SSL_CTX_new(3)|SSL_CTX_new(3)>,
L<SSL_connect(3)|SSL_connect(3)>, L<SSL_accept(3)|SSL_accept(3)>
L<SSL_set_connect_state(3)|SSL_set_connect_state(3)>,
L<ssl(3)|ssl(3)>, L<bio(3)|bio(3)>
=cut