Brian Geffon created TS-3031:
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Summary: Race condition in SSLNextProtocolSet::advertiseProtocols
Key: TS-3031
URL: https://issues.apache.org/jira/browse/TS-3031
Project: Traffic Server
Issue Type: Bug
Components: Core, SSL
Reporter: Brian Geffon
We've observed a bug in a production environment where clients would receive
malformed NPN sets. This is caused by a race condition in
SSLNextProtocolSet::advertiseProtocols:
{code}
if (!npn && !this->endpoints.empty()) {
create_npn_advertisement(this->endpoints, &npn, &npnsz);
}
{code}
Obviously this code is attempting to initailize the npn offer string on the
first SSL request to that port, this is a race condition. I have a fix that
will be committed today.
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