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PERL-780 added documentation for TCP keepalive #175

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Sep 14, 2018
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PERL-780 added documentation for TCP keepalive #175

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4 changes: 4 additions & 0 deletions lib/MongoDB/MongoClient.pm
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Expand Up @@ -745,6 +745,10 @@ If set to a negative value, socket operations will block indefinitely
until the server replies or until the operating system TCP/IP stack
gives up.

The driver automatically sets the TCP keepalive option when initializing the
socket. For keepalive related issues, check the MongoDB documentation for
L<Does TCP keepalive time affect MongoDB Deployments?|https://docs.mongodb.com/v3.2/faq/diagnostics/#does-tcp-keepalive-time-affect-mongodb-deployments>.

A zero value polls the socket for available data and is thus likely to fail
except when talking to a local process (and perhaps even then).

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