The read function is a composed operation that reads a certain amount of data from a stream before returning.

Attempt to read a certain amount of data from a stream before returning.

template<
    typename SyncReadStream,
    typename MutableBufferSequence>
std::size_t read(
    SyncReadStream & s,
    const MutableBufferSequence & buffers,
    typename enable_if< is_mutable_buffer_sequence< MutableBufferSequence >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename MutableBufferSequence>
std::size_t read(
    SyncReadStream & s,
    const MutableBufferSequence & buffers,
    boost::system::error_code & ec,
    typename enable_if< is_mutable_buffer_sequence< MutableBufferSequence >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename MutableBufferSequence,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    const MutableBufferSequence & buffers,
    CompletionCondition completion_condition,
    typename enable_if< is_mutable_buffer_sequence< MutableBufferSequence >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename MutableBufferSequence,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    const MutableBufferSequence & buffers,
    CompletionCondition completion_condition,
    boost::system::error_code & ec,
    typename enable_if< is_mutable_buffer_sequence< MutableBufferSequence >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename DynamicBuffer>
std::size_t read(
    SyncReadStream & s,
    DynamicBuffer && buffers,
    typename enable_if< is_dynamic_buffer< typename decay< DynamicBuffer >::type >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename DynamicBuffer>
std::size_t read(
    SyncReadStream & s,
    DynamicBuffer && buffers,
    boost::system::error_code & ec,
    typename enable_if< is_dynamic_buffer< typename decay< DynamicBuffer >::type >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename DynamicBuffer,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    DynamicBuffer && buffers,
    CompletionCondition completion_condition,
    typename enable_if< is_dynamic_buffer< typename decay< DynamicBuffer >::type >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename DynamicBuffer,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    DynamicBuffer && buffers,
    CompletionCondition completion_condition,
    boost::system::error_code & ec,
    typename enable_if< is_dynamic_buffer< typename decay< DynamicBuffer >::type >::value >::type *  = 0);
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template<
    typename SyncReadStream,
    typename Allocator>
std::size_t read(
    SyncReadStream & s,
    basic_streambuf< Allocator > & b);
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template<
    typename SyncReadStream,
    typename Allocator>
std::size_t read(
    SyncReadStream & s,
    basic_streambuf< Allocator > & b,
    boost::system::error_code & ec);
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template<
    typename SyncReadStream,
    typename Allocator,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    basic_streambuf< Allocator > & b,
    CompletionCondition completion_condition);
  » more...

template<
    typename SyncReadStream,
    typename Allocator,
    typename CompletionCondition>
std::size_t read(
    SyncReadStream & s,
    basic_streambuf< Allocator > & b,
    CompletionCondition completion_condition,
    boost::system::error_code & ec);
  » more...

Requirements

Header: boost/asio/read.hpp

Convenience header: boost/asio.hpp