如何UDP实现在同一端口上收发数据

m_SendingSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
////设置发送所需
m_ReceiverAddr.sin_family = AF_INET;
m_ReceiverAddr.sin_port = htons(m_nPort);
m_ReceiverAddr.sin_addr.s_addr = inet_addr(strIP);m_LocalAddr.sin_family = AF_INET;
m_LocalAddr.sin_port = htons(m_nPort);
m_LocalAddr.sin_addr.s_addr = htonl(INADDR_ANY);
bind(m_SendingSocket, (SOCKADDR *)&m_LocalAddr, sizeof(m_LocalAddr));//m_nPort为端口，strIP接收端地址
但是好像不好用，哪位高手给看看啊