if ((_socket = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
  throw std::runtime_error(strerror(errno));
}

memset(&_servaddr, 0, sizeof(sockaddr_in));
_servaddr.sin_family = AF_INET;
_servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
_servaddr.sin_port = htons(_port);

if (::bind(_socket, (struct sockaddr*)&_servaddr, sizeof(_servaddr)) < 0)  {
   throw std::runtime_error(strerror(errno));
}

if (::listen(_socket, backlog) < 0) {
   throw std::runtime_error(strerror(errno));
}

 while (_running) {
   socklen_t size = sizeof(struct sockaddr_in);
   struct sockaddr_in client_addr;
   int recv_sock = ::accept(_socket, (struct sockaddr*)&client_addr, &size);
   _handler->process(recv_sock);

while ((n = read(socket, buf, 1024)) > 0) {
   msg += std::string(buf, n);
}

curl -i http://localhost/foo