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

This is the documentation for a snapshot of the master branch, built from commit 68cc668162.

Determine whether the socket is at the out-of-band data mark.

bool at_mark() const;
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bool at_mark(
    boost::system::error_code & ec) const;
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