【米尔瑞萨RZ/G2L开发板-试用体验】TCP服务器
创建tcp服务在虚拟机上新建tcp_server.c:#include <stdio.h>#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/fcntl.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <pthread.h>
#define SERVER_PORT 3861
#define LISENT_NUM 10
int main(int argc, char * argv[])
{
int sfd, cfd;
struct sockaddr_in clientaddr;
struct sockaddr_in serverAddr;
char buff;
int size = sizeof(struct sockaddr);
pthread_t client_thread;
if((sfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
perror("socket");
exit(-1);
}
memset(&serverAddr, 0, sizeof(struct sockaddr));
serverAddr.sin_family = AF_INET;
serverAddr.sin_addr.s_addr = INADDR_ANY;
serverAddr.sin_port = htons(SERVER_PORT);
if (bind(sfd, (struct sockaddr*)&serverAddr, sizeof(struct sockaddr)) == -1)
{
perror("bind");
close(sfd);
exit(-1);
}
if(listen(sfd, LISENT_NUM) == -1)
{
perror("listen");
close(sfd);
exit(-1);
}
printf("#@ listen SERVER_PORT %d\n", SERVER_PORT);
printf("main: server waiting connect...\n");
if ((cfd = accept(sfd, (struct sockaddr *)&clientaddr, (socklen_t*)&size)) == -1)
{
perror("accept");
close(sfd);
return0;
}
printf("client (ip = %s : SERVER_PORT = %d) connect success\n", inet_ntoa(clientaddr.sin_addr), ntohs(clientaddr.sin_port));
while (1)
{
usleep(1000*10);
if (send(cfd, "hello MYD/YG2L", 6, MSG_NOSIGNAL) == -1)
{
perror("send");
exit(-1);
}
printf("send: hello MYD/YG2L\n");
usleep(1000*10);
if(recv(cfd, buff, sizeof(buff), 0) == -1)
{
perror("recv");
exit(-1);
}
printf("receive: %s\n", buff);
}
return0;
}
[*]加载sdk:source /opt/yg2lx/environment-setup-aarch64-poky-linux
[*]编译：
lugl@lugl-virtual-machine:~/MYDG2L$ source /opt/yg2lx/environment-setup-aarch64-poky-linux
lugl@lugl-virtual-machine:~/MYDG2L$ $CC tcp_server.c -o tcp_server
In file included from /opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/bits/libc-header-start.h:33,
from /opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/stdio.h:27,
from tcp_server.c:1:
/opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/features.h:397:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
#warning _FORTIFY_SOURCE requires compiling with optimization (-O)
^~~~~~~
lugl@lugl-virtual-machine:~/MYDG2L$ ls
tcp_servertcp_server.c
lugl@lugl-virtual-machine:~/MYDG2L$ file tcp_server
tcp_server: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-aarch64.so.1, for GNU/Linux 3.14.0, BuildID=c81069580d81fc0f4ac9bb00ecdd7ddf822e251f, with debug_info, not stripped
[*]上传开发板，修改执行权限后运行：
root@myir-yg2lx:~# chmod 777 tcp_server
root@myir-yg2lx:~# ./tcp_server
#@ listen SERVER_PORT 3861
main: server waiting connect...
client (ip = 192.168.3.166 : SERVER_PORT = 53634) connect success
send: hello MYD/YG2L
receive: hello
send: hello MYD/YG2L
receive: hello
send: hello MYD/YG2L
receive: hello MYD
send: hello MYD/YG2L
[*]打开TCP调试工具，连上服务器：
https://file1.elecfans.com/web2/M00/88/C3/wKgZomRxVSaAPcc8AAE326jptx0868.png
发送数据后，服务器打印出接收到的数据，客户端也接收到数据。
这个比较好玩 已验证，send: hello MYD/YG2L，只能收到hello，send(cfd, "hello MYD/YG2L", 6, MSG_NOSIGNAL)，6要改下
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