通过C / C ++通过套接字发送int [英] Send int over socket in C/C++

问题描述

在通过套接字发送整数数组时遇到麻烦。
代码如下：

I have troubles with sending an array of ints over a socket. the code looks like this

程序1 ：（在Windows上运行）

Program 1: (running on windows)

int bmp_info_buff[3];

/* connecting and others */

/* Send informations about bitmap */
send(my_socket, (char*)bmp_info_buff, 3, 0);

程序2 ：（在中微子上运行）

Program 2: (running on neutrino)

/*buff to store bitmap information size, with, length */
int bmp_info_buff[3];

/* stuff */

/* Read informations about bitmap */
recv(my_connection, bmp_info_buff, 3, NULL);
printf("Size of bitmap: %d\nwidth: %d\nheight: %d\n", bmp_info_buff[0], bmp_info_buff[1], bmp_info_buff[2]);

应打印
位图大小：64

宽度：8

高度：8

It should print Size of bitmap: 64
width: 8
height: 8

位图大小：64

宽度：6

高度：4096

我该怎么办？

Size of bitmap: 64
width: 6
height: 4096
What do I do wrong?

推荐答案

当您发送 bmp_info_buff 数组作为char数组， bmp_info_buff 的大小不是3，而是 3 * sizeof（int）

When you send the bmp_info_buff array as char array, the size of bmp_info_buff is not 3 but is 3 * sizeof(int)

recv

替换

send(my_socket, (char*)bmp_info_buff, 3, 0);
recv(my_connection, bmp_info_buff, 3, NULL);

by

send(my_socket, (char*)bmp_info_buff, 3*sizeof(int), 0);
recv(my_connection, bmp_info_buff, 3*sizeof(int), NULL);

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