void
rel_read (rel_t *s)
{
if (send_check(s)) {
packet_t out_pkt;
int count = conn_input(s->c, out_pkt.data, READ_SIZE);
if (count == 0) {
// no input
return;
} else {
if (count == -1) {
// EOF
count = 0;
s->SEND_EOF = true;
}
// send
out_pkt.cksum = 0;
out_pkt.len = htons(count + 12);
out_pkt.ackno = htonl(1);
out_pkt.seqno = htonl(s->LSS+1);
out_pkt.cksum = cksum(&out_pkt, count+12);
conn_sendpkt(s->c, &out_pkt, count+12);
addPktToSWindow(s, out_pkt);
}
}
}
//process recv's command thread
int processer()
{
command *current_com;
unsigned int mode, opt;
while (1) {
sem_wait(&msg_empty);
pthread_mutex_lock(&msg_lock);
current_com = mlist.com_head;
mlist.com_head = current_com->next;
pthread_mutex_unlock(&msg_lock);
if (current_com == NULL) {
continue;
}
mode = GET_MODE(current_com->com_num);
opt = GET_OPT(current_com->com_num);
switch (mode) {
case IPMSG_BR_ENTRY:
send_recventry(current_com);
pthread_mutex_lock(&user_lock);
add_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_BR_EXIT:
pthread_mutex_lock(&user_lock);
del_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_ANSENTRY:
pthread_mutex_lock(&user_lock);
add_user(current_com);
pthread_mutex_unlock(&user_lock);
free(current_com);
break;
case IPMSG_SENDMSG:
if (opt & IPMSG_SENDCHECKOPT) {
send_check(current_com);
}
if (opt & IPMSG_FILEATTACHOPT) {
printf("IN PRO SENDMSG: receive file.\n");
recv_files(current_com);
}else {
putout_msg(current_com);
free(current_com);
}
break;
case IPMSG_RECVMSG:
free(current_com);
break;
case IPMSG_GETFILEDATA:
free(current_com);
break;
case IPMSG_GETDIRFILES:
free(current_com);
break;
case IPMSG_RELEASEFILES:
free(current_com);
break;
default:
free(current_com);
break;
}
}
return 0;
}
