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-[/
- / Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
- /
- / Distributed under the Boost Software License, Version 1.0. (See accompanying
- / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- /]
-
-[section:synchronous_socket_operations Requirements on synchronous socket operations]
-
-In this section, ['synchronous socket operations] are those member functions
-specified as two overloads, with and without an argument of type `error_code&`:
-
- ``[*['R f]]``(``['[*A1]]`` a1, ``['[*A2]]`` a2, ..., ``['[*AN]]`` aN);
- ``[*['R f]]``(``['[*A1]]`` a1, ``['[*A2]]`` a2, ..., ``['[*AN]]`` aN, error_code& ec);
-
-For an object `s`, the conditions under which its synchronous socket operations
-may block the calling thread (C++Std [defns.block]) are determined as follows.
-
-If:
-
-[mdash] `s.non_blocking() == true`,
-
-[mdash] the synchronous socket operation is specified in terms of a __POSIX__
-function other than `__poll__`,
-
-[mdash] that __POSIX__ function lists `EWOULDBLOCK` or `EAGAIN`
-in its failure conditions, and
-
-[mdash] the effects of the operation cannot be established immediately
-
-then the synchronous socket operation shall not block the calling thread.
-[inline_note And the effects of the operation are not established.]
-
-Otherwise, the synchronous socket operation shall block the calling thread
-until the effects are established.
-
-[endsect]