boost::asio 中async_write函数中的绑定函数未被调用
我刚刚接触socket编程，有很多不懂的地方，希望大家多多指教啊
在类的成员函数SengmsgFromSocket中，我调用async_write发送数据包
void wiimote_linux::SendmsgFromSocket(unsigned char data_type,unsigned char bc,float p0,float p1,float p2)
{
static unit_data ud;
ud.data_type = data_type;
ud.button_char = bc;
float2char(p0,ud.pa0);
float2char(p1,ud.pa1);
float2char(p2,ud.pa2);
qud.push(ud);
async_write(
socket_,
buffer(&qud.front(),
sizeof(qud.front())),
bind(&wiimote_linux::write_handler,this,placeholders::error)
);
}
qud是一个队列
write_handle函数如下：
void wiimote_linux::write_handler(const system::error_code& ec)
{
if(ec)
{
cout << "error in write_handler()" << endl;
return ;
}
else{
cout << "send complete in write_handler " << endl;
if(!qud.empty())
{
async_write(
socket_,
buffer(&qud.front(),
sizeof(qud.front())),
bind(&wiimote_linux::write_handler,
this,
placeholders::error));
}
qud.pop();
}
}
