Operation not permitted on SSL_Write() - Openssl
This is a discussion on Operation not permitted on SSL_Write() - Openssl ; Hello, I'm using non-blicking sockets with an event-reporting mechanism
(epoll() on linux, kqueue() on freeBSD and select() elsewhere). When I
try and send bigger amount of data (eg: a file) via a connection via
OpenSSL, I eventually get "Operation not ...
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Operation not permitted on SSL_Write()
Hello, I'm using non-blicking sockets with an event-reporting mechanism
(epoll() on linux, kqueue() on freeBSD and select() elsewhere). When I
try and send bigger amount of data (eg: a file) via a connection via
OpenSSL, I eventually get "Operation not permitted" error on SSL_Write().
It always happens after I get a SSL_ERROR_WANT_WRITE first. After that I
set the socket to "wait for epoll() to report that I can write again"
and wait for it. Epoll tells me that I can write but I get the not
permitted error after that.
Does OpenSSL return this error on repeated non-blocking SSL_Write when
the buffers are full? I'm currently trying to find out if there's an
error in my state-machine logic but I'd like to know if the permission
error could result from such.
Thanks
Ales Katona
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Re: Operation not permitted on SSL_Write()
I've found out that it's related to how SSL_Write() expects the same
buffer pointer after an SSL_ERROR_WANT_WRITE occurs.
I also found out that this can be avoided by issuing a SSL_ctrl() which
I tried, but now I get corrupted data from certain point.
How EXACTLY is SSL_Write in non-blocking mode different from
non-blocking write()/send()?
If it fails with SSL_ERROR_WANT_WRITE does it expect that the next call
the buffer will be 100% same? Can there be additional data added to the
buffer in between?
Ales
__________________________________________________ ____________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager majordomo@openssl.org
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Re: Operation not permitted on SSL_Write()
Discard, while originally the problem was with a moving buffer, the
later trouble I had were my own bugs (SMTP CRLF line break algorithm had
problems).
Ales
__________________________________________________ ____________________
OpenSSL Project http://www.openssl.org
User Support Mailing List openssl-users@openssl.org
Automated List Manager majordomo@openssl.org
