How do I convert a boost::asio::streambuf into a std::string?

Question

I would like to convert a boost::asio::streambuf into a std::string.
How do I do that easily?

Answer 1

I use this aproach:

boost::asio::streambuf stream_buf;
...
std::string s( (std::istreambuf_iterator<char>(&stream_buf)), std::istreambuf_iterator<char>() );

you can read whole data from other kind of streams, f.e., ifstream.

Answer 2

Did not try this, but if I read the docs correctly, this class inherits from std::streambuf, in which case you can do this:

std::istream buffer( my_asio_streambuf_ptr );
std::stringstream string_buffer;

string_buffer >> buffer.rd_buf();

There are many ways to do this, and each has it's pros and cons. If you could explain you problem in more detail, we can offer more specific help.

Answer 3

Something like this is probably what you're after:

boost::asio::streambuf myBuffer;
std::string myString;  

// Convert streambuf to std::string  
std::istream(&myBuffer) >> myString;