### async_read_until

The `async_read_until` function is a composed asynchronous operation that reads data into a dynamic buffer sequence, or into a streambuf, until it contains a delimiter, matches a regular expression, or a function object indicates a match.

Start an asynchronous operation to read data into a dynamic buffer sequence until it contains a specified delimiter.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v1,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v1 && buffers,
        char delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v1< decay_t< DynamicBuffer_v1 > >::value >  = 0,
        constraint_t< !is_dynamic_buffer_v2< decay_t< DynamicBuffer_v1 > >::value >  = 0);
      » more...

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v1,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v1 && buffers,
        string_view delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v1< decay_t< DynamicBuffer_v1 > >::value >  = 0,
        constraint_t< !is_dynamic_buffer_v2< decay_t< DynamicBuffer_v1 > >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a dynamic buffer sequence until some part of its data matches a regular expression.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v1,
        typename Traits,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v1 && buffers,
        const boost::basic_regex< char, Traits > & expr,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v1< decay_t< DynamicBuffer_v1 > >::value >  = 0,
        constraint_t< !is_dynamic_buffer_v2< decay_t< DynamicBuffer_v1 > >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a dynamic buffer sequence until a function object indicates a match.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v1,
        typename MatchCondition,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v1 && buffers,
        MatchCondition match_condition,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_match_condition< MatchCondition >::value >  = 0,
        constraint_t< is_dynamic_buffer_v1< decay_t< DynamicBuffer_v1 > >::value >  = 0,
        constraint_t< !is_dynamic_buffer_v2< decay_t< DynamicBuffer_v1 > >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a streambuf until it contains a specified delimiter.

    template<
        typename AsyncReadStream,
        typename Allocator,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        asio::basic_streambuf< Allocator > & b,
        char delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >());
      » more...

    template<
        typename AsyncReadStream,
        typename Allocator,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        asio::basic_streambuf< Allocator > & b,
        string_view delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >());
      » more...

Start an asynchronous operation to read data into a streambuf until some part of its data matches a regular expression.

    template<
        typename AsyncReadStream,
        typename Allocator,
        typename Traits,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        asio::basic_streambuf< Allocator > & b,
        const boost::basic_regex< char, Traits > & expr,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >());
      » more...

Start an asynchronous operation to read data into a streambuf until a function object indicates a match.

    template<
        typename AsyncReadStream,
        typename Allocator,
        typename MatchCondition,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        asio::basic_streambuf< Allocator > & b,
        MatchCondition match_condition,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_match_condition< MatchCondition >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a dynamic buffer sequence until it contains a specified delimiter.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v2,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v2 buffers,
        char delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v2< DynamicBuffer_v2 >::value >  = 0);
      » more...

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v2,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v2 buffers,
        string_view delim,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v2< DynamicBuffer_v2 >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a dynamic buffer sequence until some part of its data matches a regular expression.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v2,
        typename Traits,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v2 buffers,
        const boost::basic_regex< char, Traits > & expr,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_dynamic_buffer_v2< DynamicBuffer_v2 >::value >  = 0);
      » more...

Start an asynchronous operation to read data into a dynamic buffer sequence until a function object indicates a match.

    template<
        typename AsyncReadStream,
        typename DynamicBuffer_v2,
        typename MatchCondition,
        typename ReadToken = default_completion_token_t<        typename AsyncReadStream::executor_type>>
    DEDUCED async_read_until(
        AsyncReadStream & s,
        DynamicBuffer_v2 buffers,
        MatchCondition match_condition,
        ReadToken && token = default_completion_token_t< typename AsyncReadStream::executor_type >(),
        constraint_t< is_match_condition< MatchCondition >::value >  = 0,
        constraint_t< is_dynamic_buffer_v2< DynamicBuffer_v2 >::value >  = 0);
      » more...

##### Requirements

Header: `asio/read_until.hpp`

Convenience header: `asio.hpp`