其實沒什麼特殊的，就是記錄一下

開發板使用STM32F4，跑的uclinux系統，虛擬機器ubuntu12.04

首先保證ARM_linux和虛擬機器linux可以ping通,然後應該沒什麼問題

參考來源：http://blog.csdn.net/chencheng126/article/details/44260799

客戶端：client.c

#include<sys/socket.h>
#include<sys/types.h>
#include<unistd.h>
#include<netinet/in.h>
#include<stdint.h>
#include<errno.h>
#include<string.h>
#include<stdio.h>
#include<arpa/inet.h>
#define MAXSIZE 4096
int main(int argc,char **argv)
{

        if(argc!=2)
        {
                printf("usage: ./%s <address>\n",argv[0]);
                return 0;
        }

        int sfd;
        int domain=AF_INET;
        int type=SOCK_STREAM;
        int protocol=0;
//      char str_ip[15];
        struct sockaddr_in cltaddr,seraddr;
        char sendline[MAXSIZE],recvline[MAXSIZE];

        if((sfd=socket(domain,type,protocol))==-1)
        {
                printf("socket error :%s\n",strerror(errno));
                return 0;
        }

        memset(&seraddr,0,sizeof(seraddr));


/*      if(inet_pton(domain,"192.168.1.112",&cltaddr.sin_addr)!=1)
        {
                printf("inet_pton1 error :%s\n",strerror(errno));
                return 0;
        }

*/
//      cltaddr.sin_family=domain;
//      cltaddr.sin_port=htons(7000);

/*      if(bind(sfd,(struct sockaddr *)(&cltaddr),sizeof(cltaddr))==-1)
        {
                printf("bind error :%s\n",strerror(errno));
                return 0;
        }

*/
        seraddr.sin_family=domain;
        seraddr.sin_port=htons(8000);

        if(inet_pton(domain,argv[1],&seraddr.sin_addr)!=1)
        {
                printf("inet_pton2 error :%s\n",strerror(errno));
                return 0;
        }

//      printf("AF_INET=%d,%d\n",AF_INET,domain);
//      printf("sockaddr->family:%d\n",seraddr.sin_family);
//      printf("sockaddr->port:%d\n",seraddr.sin_port);
//      printf("sockaddr->sin_addr:%d\n",seraddr.sin_addr.s_addr);

        if(connect(sfd,(struct sockaddr *)(&seraddr),sizeof(seraddr))==-1)
        {
                printf("connect error :%s\n",strerror(errno));
                return 0;
        }

        printf("send msg to server:");
        scanf("%s",sendline);
        if(send(sfd,sendline,strlen(sendline),0)<0)
        {
                printf("send msg error :%s\n",strerror(errno));
                return 0;
        }

        int rec_len;
        if((rec_len=recv(sfd,recvline,MAXSIZE,0))==-1)
        {
                printf("recv msg error\n");
                return 0;
        }
        recvline[rec_len]='\0';
        printf("the recv msg:%s\n",recvline);
        close(sfd);
        return 0;
}
 

伺服器：server.c

#include<stdio.h>
#include<unistd.h>
#include<string.h>
#include<errno.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet/in.h>
int initserver(int type,const struct sockaddr *addr,socklen_t len,int qlen)
{

        printf("Server is running...\n");
        int fd;
//      int err=0;
        if((fd=socket(addr->sa_family,type,0))<0)
        {
                printf("socket error\n");
                return 0;
        }


        if(bind(fd,addr,len)<0)
        {
                printf("bing error\n");
                close(fd);
                return -1;
        }


        if(type==SOCK_STREAM||type==SOCK_SEQPACKET)
        {
                if(listen(fd,qlen)<0)
                        {
                                printf("listen error\n");
                                close(fd);
                                return -1;
                        }
        }

        return fd;

}

int main(void)
{
        int socket_fd,connect_fd;
        struct sockaddr_in seraddr;
        char buff[4096];

        seraddr.sin_family=AF_INET;
        seraddr.sin_addr.s_addr=htonl(INADDR_ANY);
        seraddr.sin_port=htons(8000);

        if((socket_fd=initserver(SOCK_STREAM,(struct sockaddr *)&seraddr,sizeof(seraddr),10))==-1)
        {
                printf("initserver error\n");
                return 0;
        }

        while(1)
        {
                if((connect_fd=accept(socket_fd,NULL,NULL))==-1)
                {
                        printf("accept error:%s\n",strerror(errno));

                        continue;
                }

        int n=recv(connect_fd,buff,4096,0);
        if(!fork())
        {
                if(send(connect_fd,"Hello,you are connected!\n",26,0)==-1)
                        printf("send error\n");
                close(connect_fd);
                return 0;
        }
        buff[n]='\0';
        printf("recv msg from client:%s\n",buff);
        close(connect_fd);
        }
        close(socket_fd);
        return 0;
}