[openssl-users] Query regarding MSG_NOSIGNAL with SSL_Write

Ryan Murray rjkmurray40 at gmail.com
Thu Apr 27 15:37:48 UTC 2017

Great article. Who is the author?

Sent from Mail for Windows 10

From: Viktor Dukhovni
Sent: Thursday, April 27, 2017 11:54 AM
To: openssl-users at openssl.org
Subject: Re: [openssl-users] Query regarding MSG_NOSIGNAL with SSL_Write

On Thu, Apr 27, 2017 at 12:32:42PM +0000, Salz, Rich via openssl-users wrote:

> > Does openssl  provide any way to set MSG_NOSIGNAL on sendmsg (Underlying TCP/IP socket layer) ?
> No.  You will have to modify the code yourself.

Actually, it is possible to do the I/O in application code, using
any "write some data down a socket" API of the application's choice.


In particular, the OP could use sendmsg() to move data between the
SSL layer and the network.

For a complete example, see network_biopair_interop() function in
Postfix 2.3 (recent Postfix releases no longer use this approach).


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