How to Properly Handle Exceptions Thrown by boost::asio::io_service::run()?

Handling Exceptions Thrown by boost::asio::io_service::run()

The boost::asio::io_service::run() function throws a boost::system::system_error exception upon encountering errors. This raises the question of whether and how to handle these exceptions.

Handling Exceptions

Yes, it is crucial to handle exceptions thrown by boost::asio::io_service::run(). As mentioned in the documentation, the exceptions thrown from completion handlers are propagated. Therefore, they must be appropriately handled based on the specific application requirements.

Example:

In your provided code:

Here, an exception thrown by the handlers will not be caught or handled. To handle the exceptions, you can use a loop to repeatedly run the io_service until it exits without errors.

Loop and Retry:

Below is an example of how to loop and retry until the io_service exits without an error:

This code continues to run the io_service until it exits normally or encounters an error. In the case of an error, it logs the exception and retries.

Documentation Reference:

For further information on the handling of exceptions by boost::asio::io_service, refer to the following documentation link:

• [Effect of exceptions thrown from handlers](http://www.boost.org/doc/libs/1_61_0/doc/html/boost_asio/reference/io_service.html#boost_asio.reference.io_service.effect_of_exceptions_thrown_from_handlers)

The above is the detailed content of How to Properly Handle Exceptions Thrown by boost::asio::io_service::run()?. For more information, please follow other related articles on the PHP Chinese website!