Partial writes don't work for UDP.
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Rich Salz, OpenSSL dev team; rs...@openssl.org
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OpenSSL Project http://www.openssl.org
Development Mailing List openssl-dev@openssl.org
2014-09-01 15:42 GMT+02:00 Salz, Rich :
> The size of your UDP packet depends on the MTU supported by everyone along
> the path. (BTW, that's what heartbeat was created.)
Yes, it is understood now. But, given that DTLS provides reliability
and message order, it makes sense IMHO that SSL_write(lo
You can't use partial writes.
The size of your UDP packet depends on the MTU supported by everyone along the
path. (BTW, that's what heartbeat was created.)
I suggest you get your program working "properly" for your definition of what
properly means, without DTLS. Then add DTLS.
And have you
SSL in DTLS mode. SSL_CTX with SSL_MODE_ENABLE_PARTIAL_WRITE option
enabled so SSL_write() may return less than the given data length.
It does not work. I call SSL_write() by passing a very long data
(65536) and it still returns -1. So, in case I want to write a big
data over a DTLS UDP connection
UDP's datagram semantics means that the application either writes an entire
datagram (if kernel socket buffer has enough space) or it needs to retry. I am
guessing that comes to play here.
- Pradosh
On Thursday, August 21, 2014 3:31 PM, Iñaki Baz Castillo wrote:
OpenSSL 1.1.0-dev (git maste
OpenSSL 1.1.0-dev (git master version at 2014-08-22) compiled in OSX 10.9.4.
I've a SSL in DTLSv1 server mode. Previously in its SSL_CTX I set the
SSL_MODE_ENABLE_PARTIAL_WRITE option to enable SSL_write() to return
less than the given data length. I've also tried to set it at SSL
level with SSL_s
