void * function (void * arg)
{
struct ARG *info ;
info = (struct ARG*)arg;
process_cli(info->connfd,info->caddr);
free(arg);
pthread_exit(NULL);
}
void *start_routine(void *arg)
{
pthread_once(&key_once, processCli_once);
struct ARG *info;
info = (struct ARG *)arg;
process_cli(info->connfd, info->client);
free(arg);
pthread_exit(NULL);
}
int start_engine(t_sh *shell)
{
while (42)
{
shell->stdin_buf = get_line(shell);
if (process_cli(shell) == 1)
return (1);
if (shell->close_program == 1)
return (0);
}
}
void* start_routine(void* arg)
{
ARG *info;
info = (ARG *)arg;
/* 处理客户请求 */
process_cli(info->connfd, info->client);
delete info;
pthread_exit(NULL);
}
int main(void)
{
int lfd, cfd;
struct sockaddr_in serv_addr,clin_addr;
socklen_t clin_len;
pid_t pid;
char buf[1024];
int len;
if((lfd = socket(AF_INET,SOCK_STREAM,0)) == -1){
perror("create socket failed");
exit(1);
}
int opt = 1;
setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
memset(&serv_addr, 0, sizeof(serv_addr));
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = htonl(INADDR_ANY);
serv_addr.sin_port = htons(SERV_PORT);
if(bind(lfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr)) == -1)
{
perror("bind error");
exit(1);
}
if(listen(lfd, 128) == -1)
{
perror("listen error");
exit(1);
}
clin_len = sizeof(clin_addr);
signal(SIGCLD,SIG_IGN);
while(1)
{
if((cfd = accept(lfd, (struct sockaddr *)&clin_addr, &clin_len)) == -1)
{
perror("accept error");
exit(1);
}
pid = fork();
if (pid > 0)
{
// 在父进程中关闭连接的套接字描述符，只是把 cfd 的引用数减少1，在子进程中还在使用 cfd
close(cfd);
}
else if (pid == 0)
{
// 子进程关闭 lfd 处理任务，使其回到 TIME_WAIT 状态值
close(lfd);
process_cli(cfd,clin_addr);
exit(0);
}
else
{
perror("fork error");
exit(1);
}
}
close(lfd);
return 0;
}
main()
{
int listenfd, connectfd; /* socket descriptors */
pid_t pid;
struct sockaddr_in server; /* server's address information */
struct sockaddr_in client; /* client's address information */
int sin_size;
/* Create TCP socket */
if ((listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
/* handle exception */
perror("Creating socket failed.");
exit(1);
}
int opt = SO_REUSEADDR;
setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
bzero(&server,sizeof(server));
server.sin_family=AF_INET;
server.sin_port=htons(PORT);
server.sin_addr.s_addr = htonl (INADDR_ANY);
if (bind(listenfd, (struct sockaddr *)&server, sizeof(struct sockaddr)) == -1) {
/* handle exception */
perror("Bind error.");
exit(1);
}
if(listen(listenfd,BACKLOG) == -1){ /* calls listen() */
perror("listen() error\n");
exit(1);
}
sin_size=sizeof(struct sockaddr_in);
while(1)
{
/*accept connection */
if ((connectfd = accept(listenfd,(struct sockaddr *)&client,&sin_size))==-1) {
perror("accept() error\n");
exit(1);
}
/* Create child process to service client */
if ((pid=fork())>0) {
/* parent process */
close(connectfd);
continue;
}
else if (pid==0) {
/*child process*/
close(listenfd);
process_cli(connectfd, client);
exit(0);
}
else {
printf("fork error\n");
exit(0);
}
}
close(listenfd); /* close listenfd */
}
int main()
{
int listenfd,connectfd;
pid_t pid;
struct sockaddr_in server;
struct sockaddr_in client;
int sin_size;
if((listenfd=socket(AF_INET,SOCK_STREAM,0))==-1)
{
perror("socket() error");
exit(1);
}
bzero(&server,sizeof(server));
server.sin_family=AF_INET;
server.sin_port=htons(PORT);
server.sin_addr.s_addr=htonl(INADDR_ANY);
if(bind(listenfd,(struct sockaddr *)&server,sizeof(struct sockaddr))==-1)
{
perror("bind() error");
exit(1);
}
if(listen(listenfd,BACKLOG)==-1)
{
perror("listen() error");
exit(1);
}
sin_size=sizeof(struct sockaddr_in);
while(1)
{
sin_size=sizeof(struct sockaddr_in);
if((connectfd=accept(listenfd,(struct sockaddr *)&client,&sin_size))==-1)
{
perror("accept() error");
exit(1);
}
if((pid=fork())<0)
{
printf("fork error\n");
exit(1);
}
else if(pid==0)
{
close(listenfd);
process_cli(connectfd,client);
exit(0);
}
else
{
close(connectfd);
continue;
}
}
close(listenfd);
}
main()
{
int i, maxi, maxfd,sockfd;
int nready;
ssize_t n;
fd_set rset, allset;
int listenfd, connectfd; /* socket descriptors */
struct sockaddr_in server; /* server's address information */
/* client's information */
CLIENT client[FD_SETSIZE];
char recvbuf[MAXDATASIZE];
int sin_size;
/* Create TCP socket */
if ((listenfd = socket(AF_INET, SOCK_STREAM, 0)) == -1) {
/* handle exception */
perror("Creating socket failed.");
exit(1);
}
int opt = SO_REUSEADDR;
setsockopt(listenfd, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
bzero(&server,sizeof(server));
server.sin_family=AF_INET;
server.sin_port=htons(PORT);
server.sin_addr.s_addr = htonl (INADDR_ANY);
if (bind(listenfd, (struct sockaddr *)&server, sizeof(struct sockaddr)) == -1) {
/* handle exception */
perror("Bind error.");
exit(1);
}
if(listen(listenfd,BACKLOG) == -1){ /* calls listen() */
perror("listen() error\n");
exit(1);
}
sin_size=sizeof(struct sockaddr_in);
/*initialize for select */
maxfd = listenfd;
maxi = -1;
for (i = 0; i < FD_SETSIZE; i++) {
client[i].fd = -1;
}
FD_ZERO(&allset);
FD_SET(listenfd, &allset);
while(1)
{
struct sockaddr_in addr;
rset = allset;
nready = select(maxfd+1, &rset, NULL, NULL, NULL);
if (FD_ISSET(listenfd, &rset)) { /* new client connection */
/* Accept connection */
if ((connectfd = accept(listenfd,(struct sockaddr *)&addr,&sin_size))==-1) {
perror("accept() error\n");
continue;
}
/* Put new fd to client */
for (i = 0; i < FD_SETSIZE; i++)
if (client[i].fd < 0) {
client[i].fd = connectfd; /* save descriptor */
client[i].name = new char[MAXDATASIZE];
client[i].addr = addr;
client[i].data = new char[MAXDATASIZE];
client[i].name[0] = '\0';
client[i].data[0] = '\0';
printf("You got a connection from %s. ",inet_ntoa(client[i].addr.sin_addr) );
break;
}
if (i == FD_SETSIZE) printf("too many clients\n");
FD_SET(connectfd, &allset); /* add new descriptor to set */
if (connectfd > maxfd) maxfd = connectfd;
if (i > maxi) maxi = i;
if (--nready <= 0) continue; /* no more readable descriptors */
}
for (i = 0; i <= maxi; i++) { /* check all clients for data */
if ( (sockfd = client[i].fd) < 0) continue;
if (FD_ISSET(sockfd, &rset)) {
if ( (n = recv(sockfd, recvbuf, MAXDATASIZE,0)) == 0) {
/*connection closed by client */
close(sockfd);
printf("Client( %s ) closed connection. User's data: %s\n",client[i].name,client[i].data);
FD_CLR(sockfd, &allset);
client[i].fd = -1;
delete client[i].name;
delete client[i].data;
} else
process_cli(&client[i], recvbuf, n);
if (--nready <= 0) break; /* no more readable descriptors */
}
}
}
close(listenfd); /* close listenfd */
}
