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#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <string.h>
#include <sys/types.h>
#include <sys/select.h>
#include <pthread.h>
#define SERV_ADDR "127.0.0.1"
#define SERV_PORT 5358
#define BUF_LEN 1024
#define MAX(a, b) (a)>(b)?(a):(b)
struct thread_arg {
FILE *fp;
int sockfd;
};
ssize_t writen(int fd, const void *vptr, size_t n)
{
size_t nleft;
ssize_t nwriten;
const char *ptr;
ptr = vptr;
nleft = n;
while(nleft>0) {
if((nwriten = write(fd, ptr, nleft)) <= 0) {
if(nwriten < 0 && errno == EINTR) {
nwriten = 0; /*interrupt by signal*/
} else {
return -1;
}
}
nleft -= nwriten;
ptr += nwriten;
}
return n;
}
void *thread_func(void *arg)
{
struct thread_arg *fds;
char sendbuf[BUF_LEN];
fds = (struct thread_arg *)arg;
while(fgets(sendbuf, BUF_LEN, fds->fp) != NULL) {
writen(fds->sockfd, sendbuf, strlen(sendbuf));
bzero(sendbuf, BUF_LEN);
}
shutdown(fds->sockfd, SHUT_WR);
free(fds);
return NULL;
}
void str_cli(FILE *fp, int sockfd)
{
pthread_t tid;
char recvbuf[BUF_LEN];
struct thread_arg *fds;
fds = (struct thread_arg *)malloc(sizeof(struct thread_arg));
fds->fp = fp;
fds->sockfd = sockfd;
if(pthread_create(&tid, NULL, thread_func, (void *)fds) != 0) {
printf("create thread failed!\n");
return;
}
while(read(sockfd, recvbuf, BUF_LEN) > 0) {
fputs(recvbuf, stdout);
bzero(recvbuf, BUF_LEN);
}
return;
}
int main(int argc, char **argv)
{
int fd;
struct sockaddr_in servaddr;
fd = socket(AF_INET, SOCK_STREAM, 0);
bzero(&servaddr, sizeof(servaddr));
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr = inet_addr(SERV_ADDR);
servaddr.sin_port = htons(SERV_PORT);
if (connect(fd, (struct sockaddr *)&servaddr, sizeof(servaddr)) == -1) {
printf("connect error: %s\n", strerror(errno));
return 0;
}
str_cli(stdin, fd);
return 0;
}
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