server.c~

这个资料非常不错

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

void process(int fd)
{
char buff[10000];
int received;
int help,read_bytes;

received = 5000;
memset ( buff, '.', received );
read_bytes = read(fd, buff, received);
if (read_bytes < 0) {
perror("read");
exit(1);
}

printf("%d bytes have received on socket %d\n", read_bytes, fd);
printf("buff=\n%s\n", buff);
for(help=0; help<received; help++)
if(buff[help] != '0'+help%10) 
{
printf("Error on position %d\n", help); 
break;
}
}

int main(void)
{
int sockfd ,newsockfd;
struct sockaddr_in myaddr, peer;

int addrlen1,addrlen2;

if ((sockfd = socket(AF_INET,SOCK_STREAM,0)) < 0 ) {
perror("socket");
exit(1);
}

addrlen1 = sizeof(myaddr);

myaddr.sin_family = AF_INET;
myaddr.sin_port = htons(10000);
myaddr.sin_addr.s_addr = INADDR_ANY;
if (bind(sockfd, &myaddr , addrlen1) < 0 ) {
perror("bind");
exit(1);
}

if (listen(sockfd, 5 )) {
perror("listen");
exit(1);
}

for (;;)
{
addrlen2 = sizeof(peer);
newsockfd = accept(sockfd, &peer , &addrlen2);
if ( newsockfd < 0) {
perror("accept");
exit(1);
}
if (fork() == 0) {
close(sockfd);

/* process request */
printf("connection on socket %d from %s\n", newsockfd, 
inet_ntoa(peer.sin_addr.s_addr));
process(newsockfd);
close(newsockfd);
exit(0);

}
close(newsockfd);
}
}