POST request body is empty,http sync server not async (0.12.0 final)

[choujayyl]

I test the http sync server example,but post request body is empty.
cpp-netlib version is cpp-netlib-0.12.0-final-104-gb284b14.

Here is my code:

#include <boost/network/protocol/http/server.hpp>
#include <iostream>

namespace http = boost::network::http;

/*<< Defines the server. >>*/
struct hello_world;
typedef http::server<hello_world> server;

/*<< Defines the request handler.  It's a class that defines two
     functions, `operator()` and `log()` >>*/
struct hello_world {
  /*<< This is the function that handles the incoming request. >>*/
  void operator()(server::request const &request, server::connection_ptr connection) {
    server::string_type ip = source(request);
    unsigned int port = request.source_port;
    //const auto  header = request.headers();

    for(const auto& header : request.headers)
    {
         std::cout<<"header.name:"<< header.name<<"headr.value:"<<header.value<< std::endl;
    }

     

> ////!!!! the body is empty!!!!

    std::cout<<"body:"<< body(request)<< std::endl;

    std::cout<<"request.uri():"<<std::string(destination(request))<< std::endl;

    std::ostringstream data;
    data << "Hello, " << ip << ':' << port << '!'<<" "<<bodystr;
    connection->write(data.str());
  }
};

int main(int argc, char *argv[]) {

  if (argc != 3) {
    std::cerr << "Usage: " << argv[0] << " address port" << std::endl;
    return 1;
  }

  try {
    /*<< Creates the request handler. >>*/
    hello_world handler;
    /*<< Creates the server. >>*/
    server::options options(handler);
    server server_(options.address(argv[1]).port(argv[2]));
    /*<< Runs the server. >>*/
    server_.run();
  }
  catch (std::exception &e) {
    std::cerr << e.what() << std::endl;
    return 1;
  }

  return 0;
}

So,why.

[deanberris]

We no longer have a "sync" HTTP server in 0.12.0 -- you need to pull the data from the connection pointer. In this case the body is always empty, but the connection is still open, and you can use the read function to pull the data out:

https://cpp-netlib.org/0.12.0/reference/http_server.html#_CPPv2N5boost7network4http16async_connection4readE22read_callback_function