【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:

1. #include <stdio.h>
   
2. #include <stdlib.h>
   
3. #include <unistd.h>
   
4. #include <errno.h>
   
5. #include <string.h>
   
6. #include <sys/types.h>
   
7. #include <sys/fcntl.h>
   
8. #include <arpa/inet.h>
   
9. #include <netinet/in.h>
   
10. #include <sys/socket.h>
    
11. #include <sys/wait.h>
    
12. #include <pthread.h>
    
13. 
    
14. #define SERVER_PORT 3861
    
15. #define LISENT_NUM 10
    
16. 
    
17. int main(int argc, char * argv[])
    
18. {
    
19.     int sfd, cfd;
    
20.     struct sockaddr_in clientaddr;
    
21.     struct sockaddr_in serverAddr;
    
22.     char buff[1024];
    
23.     int size = sizeof(struct sockaddr);
    
24.     pthread_t client_thread[LISENT_NUM];
    
25. 
    
26.     if((sfd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
    
27.     {
    
28.         perror("socket");
    
29.         exit(-1);
    
30.     }
    
31. 
    
32.     memset(&serverAddr, 0, sizeof(struct sockaddr));
    
33.     serverAddr.sin_family = AF_INET;
    
34.     serverAddr.sin_addr.s_addr = INADDR_ANY;
    
35.     serverAddr.sin_port = htons(SERVER_PORT);
    
36. 
    
37.     if (bind(sfd, (struct sockaddr*)&serverAddr, sizeof(struct sockaddr)) == -1)
    
38.         {
    
39.                 perror("bind");
    
40.                 close(sfd);
    
41.                 exit(-1);
    
42.     }
    
43.     if(listen(sfd, LISENT_NUM) == -1)
    
44.     {
    
45.         perror("listen");
    
46.         close(sfd);
    
47.         exit(-1);
    
48.     }
    
49. 
    
50.     printf("#@ listen SERVER_PORT %d\n", SERVER_PORT);
    
51.     printf("main: server waiting connect...\n");
    
52. 
    
53.     if ((cfd = accept(sfd, (struct sockaddr *)&clientaddr, (socklen_t*)&size)) == -1)
    
54.         {
    
55.                 perror("accept");
    
56.                 close(sfd);
    
57.                 return0;
    
58.         }
    
59.     printf("client (ip = %s : SERVER_PORT = %d) connect success\n", inet_ntoa(clientaddr.sin_addr), ntohs(clientaddr.sin_port));
    
60. 
    
61.     while (1)
    
62.     {
    
63.         usleep(1000*10);
    
64.         if (send(cfd, "hello MYD/YG2L", 6, MSG_NOSIGNAL) == -1)
    
65.         {
    
66.             perror("send");
    
67.             exit(-1);
    
68.         }
    
69.         printf("send: hello MYD/YG2L\n");
    
70.         usleep(1000*10);
    
71.         if(recv(cfd, buff, sizeof(buff), 0) == -1)
    
72.         {
    
73.             perror("recv");
    
74.             exit(-1);
    
75.         }
    
76.         printf("receive: %s\n", buff);
    
77.     }
    
78.     return0;
    
79. 
    
80. }

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• 加载sdk:source /opt/yg2lx/environment-setup-aarch64-poky-linux
• 编译：
  

1. lugl@lugl-virtual-machine:~/MYDG2L$ source /opt/yg2lx/environment-setup-aarch64-poky-linux
   
2. lugl@lugl-virtual-machine:~/MYDG2L$ $CC tcp_server.c -o tcp_server
   
3. In file included from /opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/bits/libc-header-start.h:33,
   
4.                  from /opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/stdio.h:27,
   
5.                  from tcp_server.c:1:
   
6. /opt/yg2lx/sysroots/aarch64-poky-linux/usr/include/features.h:397:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
   
7. #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
   
8.     ^~~~~~~
   
9. lugl@lugl-virtual-machine:~/MYDG2L$ ls
   
10. tcp_server  tcp_server.c
    
11. lugl@lugl-virtual-machine:~/MYDG2L$ file tcp_server
    
12. 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[sha1]=c81069580d81fc0f4ac9bb00ecdd7ddf822e251f, with debug_info, not stripped

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• 上传开发板，修改执行权限后运行：
  

1. root@myir-yg2lx:~# chmod 777 tcp_server
   
2. root@myir-yg2lx:~# ./tcp_server
   
3. #@ listen SERVER_PORT 3861
   
4. main: server waiting connect...
   
5. client (ip = 192.168.3.166 : SERVER_PORT = 53634) connect success
   
6. send: hello MYD/YG2L
   
7. receive: hello
   
8. send: hello MYD/YG2L
   
9. receive: hello
   
10. send: hello MYD/YG2L
    
11. receive: hello MYD
    
12. send: hello MYD/YG2L

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• 打开TCP调试工具，连上服务器：
  
  
  
  
  

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