本文主要是介绍TCP socket发送整形数据(数组,结构体),希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
使用TCP发送整型等(非字符型)数据时,经常会遇到不能将发送类型转换成const char*的错误。这其实是socket设定的问题,socket设定为只能传送字符型数据。
从read和write的函数生命可以看出,其实发送buffer应该是一个char型指针,所以我们只需要将要发送的数组或者是结构体强制转换成char*就可以了。
Client:
struct ou_buffer w_buffer;
w_buffer.a[0] = 1;
w_buffer.a[1] = 3;
w_buffer.b[0] = 2;
w_buffer.b[1] = 4;
w_buffer.b[2] = 6;
w_buffer.b[3] = 8;
QTcpSocket *tcpSocket = new QTcpSocket;
tcpSocket->abort();
tcpSocket->connectToHost("192.168.1.102",9734);//Server IP and port.
qint32 ss[9] = {8,1,2,3,4,5};
qDebug("CONNECT PROCEDURE...");
if (tcpSocket->waitForConnected(4000))
qDebug("Connected!");
qDebug("\n");
qDebug("WRITE PROCEDURE...");
//int w = (tcpSocket->write)((char*)&w_buffer, sizeof(w_buffer));//pass
int w = (tcpSocket->write)((char*)ss, sizeof(ss));//pass
while(!tcpSocket->waitForBytesWritten(3000)){
qDebug("sending...");
}
Server:
while(1){
uint8_t in_buffer[56];
struct in_stu in_buffer2;
printf("server_waiting!\n");
client_sockfd = accept(server_sockfd, (struct sockaddr*)&client_address, &client_len);
int r, w;
printf("reading...\n");
r = read(client_sockfd, in_buffer, sizeof(in_buffer));
printf("r = %d\n", r);
memcpy(&in_buffer2, in_buffer, sizeof(in_buffer));
printf("in_buffer.a[0] = %d\n", in_buffer2.a[0]);
printf("in_buffer.a[1] = %d\n", in_buffer2.a[1]);
printf("in_buffer.b[0] = %d\n", in_buffer2.b[0]);
printf("in_buffer.b[1] = %d\n", in_buffer2.b[1]);
printf("in_buffer.b[2] = %d\n", in_buffer2.b[2]);
printf("in_buffer.b[3] = %d\n", in_buffer2.b[3]);
...
}
这篇关于TCP socket发送整形数据(数组,结构体)的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!