gistfile1.txt

    /** Read a complete message

        This function is used to synchronously read a message from the stream.
        The call blocks until one of the following is true:

        @li A complete message is received.

        @li A close frame is received. In this case the error indicated by
            the function will be @ref error::closed.

        @li An error occurs on the stream.

        This operation is implemented in terms of one or more calls to the next
        layer's `read_some` and `write_some` functions.

        Any received message data is appended to the input area of the buffer.
        The functions @ref got_binary and @ref got_text may be used to query
        the stream and determine the type of the last received message.

        While this read operation is active, the implementation will read
        incoming control frames and handle them automatically as follows:

        @li The @ref control_callback will be invoked for each control frame.

        @li For each received ping frame, a pong frame will be automatically sent.

        @li If a close frame is received, the WebSocket close procedure is
            performed. In this case, when the function returns, the error
            @ref error::closed will be indicated.

        @param buffer A dynamic buffer to hold the message data after
        any masking or decompression has been applied.

        @throws system_error Thrown to indicate an error. The corresponding
        error code may be retrieved from the exception object for inspection.
    */
    template<class DynamicBuffer>
    std::size_t
    read(DynamicBuffer& buffer);