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linux tcp server demo

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【linux tcp server demo】亦余心之所善兮，虽九死其犹未悔。这篇文章主要讲述linux tcp server demo相关的知识，希望能为你提供帮助。


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

#define MAXLINE 80
#define SERV_PORT 6970

void do_echo(int sockfd, struct sockaddr *pcliaddr, socklen_t clilen)

int n;
socklen_t len;
char mesg[MAXLINE];

for(; ; )

len = clilen;
/* waiting for receive data */
n = recvfrom(sockfd, mesg, MAXLINE, 0, pcliaddr, & len);
/* sent data back to client */
printf("receieve: %s\\n",mesg);
fflush ( stdout ) ;
sendto(sockfd, mesg, n, 0, pcliaddr, len);




int main(void)

int sockfd;
struct sockaddr_in servaddr, cliaddr;
sockfd = socket(AF_INET, SOCK_DGRAM, 0); /* create a socket */

/* init servaddr */
bzero(& servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
servaddr.sin_port = htons(SERV_PORT);

/* bind address and port to socket */
if(bind(sockfd, (struct sockaddr *)& servaddr, sizeof(servaddr)) == -1)

perror("bind error");
exit(1);


do_echo(sockfd, (struct sockaddr *)& cliaddr, sizeof(cliaddr));

return 0;




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