chatli.txt

LINUX环境下

#include <SYS types.h>   
#include <SYS socket.h>   
#include <STDIO.H>   
#include <UNISTD.H>   
#include <NETINET in.h>   
#include <ARPA inet.h>   
#include <ERRNO.H>   
#include <SYS select.h>   
  
#define MAXLINE 1024   
char sendhead[MAXLINE];  
void  
str_cli(FILE *fp, int sockfd)  
{  
    int         maxfdp1, stdineof;  
    fd_set      rset;  
    char        recvbuf[MAXLINE],sendbuf[MAXLINE],temp[MAXLINE];  
        int             n,len;  
  
    stdineof = 0;  
    FD_ZERO(&rset);  
      
        for ( ; ; ) {  
        if (stdineof == 0)  
            FD_SET(fileno(fp), &rset);  
        FD_SET(sockfd, &rset);  
                if(sockfd>fileno(fp))  
           maxfdp1=sockfd+1;  
           else  
             maxfdp1=fileno(fp)+1;  
  
        if(  (  select(maxfdp1, &rset, NULL, NULL, NULL) )<0)  
          {  
            perror("select");  
          }  
  
        if (FD_ISSET(sockfd, &rset)) {  /* socket is readable */  
            n=read(sockfd, recvbuf, MAXLINE) ;  
                                if(n<0) {  
                if (stdineof == 1)  
                    return;     /* normal termination */  
                else  
                    perror("str_cli: server terminated prematurely");  
            }  
  
            fputs(recvbuf,stdout);  
        }  
  
        if (FD_ISSET(fileno(fp), &rset)) {  /* input is readable */          
                  n= MAXLINE;  
                  bzero(sendbuf,MAXLINE);  
                  if (fgets(sendbuf, MAXLINE, fp) == NULL) {  
                stdineof = 1;  
                shutdown(sockfd, SHUT_WR);  /* send FIN */  
                FD_CLR(fileno(fp), &rset);  
                continue;  
            }  
                strcpy(temp,sendhead);  
            strcat(temp,sendbuf);  
            printf("%s",temp);  
            write(sockfd, temp, n);  
        }  
    }  
}  
  
  
  
  
int   
main(int argc , char* argv[])  
  
{  
int sockfd;  
  
struct sockaddr_in servaddr;  
  
char s1[]=" say:";  
  
if(argc!=4){  
printf("useage:client address port yourname");  
exit(0);  
}  
  
   
  
if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1  )  
  
{  
  perror("socket");  
  exit(1);  
}  
   printf("%s enter the room\n",argv[3]);  
     
   bzero(&servaddr,sizeof(servaddr));  
   servaddr.sin_family=AF_INET;  
   servaddr.sin_port=htons(atoi(argv[2]));  
   inet_pton(AF_INET,argv[1],&servaddr.sin_addr);  
   
   if( ( connect(sockfd,(struct sockaddr*)&servaddr,sizeof(servaddr))  )<0)  
   {  
     perror("connect");  
     exit(1);  
   }  
         
     
       strcpy(sendhead,argv[3]);  
       strcat(sendhead,s1);  
       str_cli(stdin,sockfd);   
       exit(0);  
  
}   

#include 
#include 
#include 
#include 
#include 
#include 
#include 
#include 

#define MAXLINE 1024
char sendhead[MAXLINE];
void
str_cli(FILE *fp, int sockfd)
{
	int			maxfdp1, stdineof;
	fd_set		rset;
	char		recvbuf[MAXLINE],sendbuf[MAXLINE],temp[MAXLINE];
        int             n,len;

	stdineof = 0;
	FD_ZERO(&rset);
	
        for ( ; ; ) {
		if (stdineof == 0)
			FD_SET(fileno(fp), &rset);
		FD_SET(sockfd, &rset);
                if(sockfd>fileno(fp))
		   maxfdp1=sockfd+1;
		   else
		     maxfdp1=fileno(fp)+1;

		if(  (	select(maxfdp1, &rset, NULL, NULL, NULL) )<0)
		  {
		    perror("select");
		  }

		if (FD_ISSET(sockfd, &rset)) {	/* socket is readable */
			n=read(sockfd, recvbuf, MAXLINE) ;
                                if(n<0) {
				if (stdineof == 1)
					return;		/* normal termination */
				else
					perror("str_cli: server terminated prematurely");
			}

			fputs(recvbuf,stdout);
		}

		if (FD_ISSET(fileno(fp), &rset)) {  /* input is readable */        
                  n= MAXLINE;
                  bzero(sendbuf,MAXLINE);
                  if (fgets(sendbuf, MAXLINE, fp) == NULL) {
				stdineof = 1;
				shutdown(sockfd, SHUT_WR);	/* send FIN */
				FD_CLR(fileno(fp), &rset);
				continue;
			}
		        strcpy(temp,sendhead);
			strcat(temp,sendbuf);
			printf("%s",temp);
			write(sockfd, temp, n);
		}
	}
}




int 
main(int argc , char* argv[])

{
int sockfd;

struct sockaddr_in servaddr;

char s1[]=" say:";

if(argc!=4){
printf("useage:client address port yourname");
exit(0);
}

 

if((sockfd=socket(AF_INET,SOCK_STREAM,0))==-1  )

{
  perror("socket");
  exit(1);
}
   printf("%s enter the room\n",argv[3]);
   
   bzero(&servaddr,sizeof(servaddr));
   servaddr.sin_family=AF_INET;
   servaddr.sin_port=htons(atoi(argv[2]));
   inet_pton(AF_INET,argv[1],&servaddr.sin_addr);
 
   if( ( connect(sockfd,(struct sockaddr*)&servaddr,sizeof(servaddr))  )<0)
   {
     perror("connect");
     exit(1);
   }
       
   
       strcpy(sendhead,argv[3]);
       strcat(sendhead,s1);
       str_cli(stdin,sockfd); 
       exit(0);

}