您正在使用局部变量buf
作为读缓冲区,这是危险的并且不起作用。此外,您只是将该缓冲区的原始内容发送到处理程序。因此,您需要使用寿命更长的缓冲区。像这样的东西:
class Server
{
.....
boost::array<char, 1> buf;
void Server::accepted()
{
std::cout << "Accepted!" << std::endl;
boost::asio::async_read(socket, boost::asio::buffer(buf),
boost::bind(&Server::handleRead, this, boost::asio::placeholders::error));
}
void Server::handleRead(const boost::system::error_code& error)
{
if(!error)
{
std::cout << "Message: " << buf.data() << std::endl;
}
else
{
std::cout << "Error occurred." << std::endl;
}
}
.....
}
edit:或者,使用堆分配的缓冲区(不确定代码是否正确,但你会明白的):
void Server::accepted()
{
std::cout << "Accepted!" << std::endl;
boost::shared_ptr<boost::array<char, 1>> buf(new boost::array<char, 1>);
boost::asio::async_read(socket, boost::asio::buffer(*buf),
boost::bind(&Server::handleRead, this, buf, boost::asio::placeholders::error));
}
void Server::handleRead(boost::shared_ptr<boost::array<char, 1>> buf, const boost::system::error_code& error)
{
if(!error)
{
std::cout << "Message: " << buf->data() << std::endl;
}
else
{
std::cout << "Error occurred." << std::endl;
}
}