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improved heartbeats documentation

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Emiel Bruijntjes 2018-11-08 17:50:52 +01:00
parent acf55c30fc
commit aa424abba0
1 changed files with 10 additions and 5 deletions
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README.md
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@ -671,7 +671,7 @@ lasting algorithms after you've consumed a message from RabbitMQ, without having
to worry about the connection being idle for too long. to worry about the connection being idle for too long.
You can however choose to enable these heartbeats. If you want to enable heartbeats, You can however choose to enable these heartbeats. If you want to enable heartbeats,
simple implement the onNegotiate() method inside your ConnectionHandler or you should implement the onNegotiate() method inside your ConnectionHandler or
TcpHandler class and have it return the interval that you find appropriate. TcpHandler class and have it return the interval that you find appropriate.
````c++ ````c++
@ -695,7 +695,8 @@ class MyTcpHandler : public AMQP::TcpHandler
// @todo // @todo
// set a timer in your event loop, and make sure that you call // set a timer in your event loop, and make sure that you call
// connection->heartbeat() every _interval_ seconds. // connection->heartbeat() every _interval_ seconds if no other
// instruction was sent in that period.
// return the interval that we want to use // return the interval that we want to use
return interval; return interval;
@ -703,12 +704,16 @@ class MyTcpHandler : public AMQP::TcpHandler
}; };
```` ````
If you have enabled heartbeats, it is your own responsibility to ensure that the If you enable heartbeats, it is your own responsibility to ensure that the
```connection->heartbeat()``` method is called at least once during this period, ```connection->heartbeat()``` method is called at least once during this period,
or that you call one of the other channel or connection methods to send data or that you call one of the other channel or connection methods to send data
over the connection. over the connection. Heartbeats are sent by the server too, RabbitMQ also ensures
that _some data_ is sent over the connection during the heartbeat interval. It
is also your responnsibility to shutdown the connection if you find out that
the server stops sending data during this period.
In the libev event loop implementation the heartbeats are enabled by default. If you use the AMQP::LibEvHandler event loop implementation, heartbeats are
enabled by default, and all these checks are automatically performed.
CHANNELS CHANNELS