server.c

一个已经通过调试的uart转网络的程序 包含了linux下的串口和socket编程

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<sys/socket.h>
#include<sys/types.h>
#include<netdb.h>
#include<netinet/in.h>

void nread(int socket_fd,char *buf,char len)
{ 
	char  count=0; 
  int   now=len;   
  
  do{
    	  count=read(socket_fd,buf,now);
    	  if(count==len)
    	    break;
    	  now=now-count; 
    	  buf=buf+count;  
    }while(now!=0);
	}

int main(void)
{
   int Server_Sockfd;
   int Client_Sockfd;
   char Test[8]="hello!";
   struct sockaddr_in Server_addr;
   struct sockaddr_in Client_addr;
   char rec[100];
   int sin_size;
   int count=0;    //对接收到的数据进行计数
  if((Server_Sockfd=socket(AF_INET,SOCK_STREAM,0))==-1)//
  {                                      
      printf("Socket create failed!\n");
      exit(1);
  }
  
  printf("Socket create is successful!\n");
  bzero(&Server_addr,sizeof(struct sockaddr_in));
  Server_addr.sin_family=AF_INET;
  Server_addr.sin_addr.s_addr=htons(INADDR_ANY);//inet_addr(Server_IP);
  Server_addr.sin_port=htons(7000);
  
  if(bind(Server_Sockfd,(struct sockaddr *)&Server_addr,sizeof(struct sockaddr))==-1)
  { 
      printf("Bind failed!\n");
      exit(1);
  }
  
  printf("bind port is successful!\n");
  
  if(listen(Server_Sockfd,5)==-1)
  {
      printf("Listen is failed!\n");
      exit(1);
  }
  printf("listen port is successful!");
  printf(".......................................................\n");
  
  sin_size=sizeof(struct sockaddr_in);
  if((Client_Sockfd=accept(Server_Sockfd,(struct sockaddr *)&Client_addr,&sin_size))==-1)//
     {
          printf("Accept is failed!\n");
          exit(1);
     }
 printf("receive client  connect from IP:%s!\n",inet_ntoa(Client_addr.sin_addr));
 
   while(1)
  {
     nread(Client_Sockfd,rec,28);
     rec[28]='\0';
     printf("receive data from cilent is:%s\n",rec); 
     count++;
     printf("server receive data success! count is:%d\n",count);
    
  }
  
     close(Server_Sockfd); 
     exit(0);   
}