Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. — Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

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http::message::keep_alive

Returns true if the message semantics indicate keep-alive.

bool
keep_alive() const;
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Set the keep-alive message semantic option.

void
keep_alive(
    bool value);
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