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Agreed, Iooked at this when creating a failover service, and trying to replicate all the TCP and TLS data ended up using significant CPU processing and network bandwidth that it wasn’t worth it; in addition to intrusive OpenSSL changes.
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<div class="">You should try to have a way to detect and re-establish a failed connection; it’s significantly easier to do, and requires no modification of the OpenSSL code. Alternatively, having two simultaneous connections might work out.<br class="">
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<div class="">-Todd Short</div>
<div class="">// <a href="mailto:tshort@akamai.com" class="">tshort@akamai.com</a></div>
<div class="">// "One if by land, two if by sea, three if by the Internet."</div>
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<div class="">On Aug 23, 2018, at 8:36 AM, Salz, Rich via openssl-users <<a href="mailto:openssl-users@openssl.org" class="">openssl-users@openssl.org</a>> wrote:</div>
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<b class=""><span style="font-size: 12pt;" class="">></span></b>I want to take backup of existing ssl connection. Use this backup connection in other slave board. This backup include keys and sequence no, ssl version etc.<o:p class=""></o:p></div>
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>Is Openssl support any api to take backup of existing ssl connection?<o:p class=""></o:p></div>
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<o:p class=""> </o:p></div>
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No. This is not currently possible, and is unlikely to ever happen in OpenSSL. It’s too hard.<o:p class=""></o:p></div>
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