void
ConnectionPool::remove_old_connections()
{
TooOld<ConnectionInfo> too_old(max_idle_time());
PoolIt it = pool_.begin();
while ((it = std::find_if(it, pool_.end(), too_old)) != pool_.end()) {
remove(it++);
}
}
void process_blocks(struct gprs_tbf *t, int ul)
{
uint8_t bsn, bsn2;
struct gprs_frag *f;
struct gprs_lime *l;
unsigned i, skip;
unsigned llc_len = 0;
uint8_t llc_data[65536];
uint8_t llc_first_bsn;
uint8_t llc_last_bsn = 0;
uint8_t li_off;
uint32_t current_fn;
/* get current "time", oldest unreassembled frag */
bsn = t->start_bsn;
while (t->frags[bsn].len == 0) {
bsn = (bsn+1)%128;
if (bsn == t->start_bsn) {
printf("no valid blocks in current TBF!\n");
fflush(stdout);
return;
}
}
current_fn = t->frags[bsn].fn;
t->start_bsn = bsn;
/* walk through framents, mark reassembled/used blocks */
skip = 0;
for (bsn = t->start_bsn; bsn != ((t->last_bsn+1)%128); bsn = (bsn+1)%128) {
/* get frament descriptor */
f = &t->frags[bsn];
printf(" bsn %d ", bsn);
fflush(stdout);
/* already processed or null */
if (!f->len) {
printf("null\n");
fflush(stdout);
llc_len = 0;
skip = 1;
continue;
}
/* check frament age */
if (too_old(current_fn, f->fn)) {
printf("old sement\n");
fflush(stdout);
llc_len = 0;
skip = 1;
continue;
}
/* update "time" */
current_fn = f->fn;
if (llc_len && !bsn_is_next(llc_last_bsn, bsn)) {
printf("missing bsn, previous %d\n", llc_last_bsn);
fflush(stdout);
llc_len = 0;
skip = 1;
continue;
}
/* check for multiple blocks/parts */
if (f->n_blocks == 0) {
/* check if first part of message */
if (!llc_len)
llc_first_bsn = bsn;
/* append data to buffer */
memcpy(&llc_data[llc_len], f->data, f->len);
llc_len += f->len;
llc_last_bsn = bsn;
/* last TBF block? (very rare condition) */
if (f->last) {
printf("end of TBF\n");
fflush(stdout);
print_pkt(llc_data, llc_len);
net_send_llc(llc_data, llc_len, ul);
/* reset all framents */
for (bsn2 = 0; bsn2 < 128; bsn2++) {
f = &t->frags[bsn2];
f->len = 0;
f->n_blocks = 0;
}
/* reset buffer state */
llc_len = 0;
t->start_bsn = 0;
}
} else {
/* multiple data parts */
li_off = 0;
for (i=0; i<f->n_blocks; i++) {
printf("\nlime %d\n", i);
fflush(stdout);
l = &f->blocks[i];
if (l->used) {
if (llc_len) {
// error!
printf("\nlime error!\n");
fflush(stdout);
llc_len = 0;
}
} else {
if (!llc_len)
llc_first_bsn = bsn;
/* append data to buffer */
memcpy(&llc_data[llc_len], &f->data[li_off], l->li);
llc_len += l->li;
llc_last_bsn = bsn;
if (!l->e || !l->m || (l->e && l->m)) {
/* message ends here */
printf("end of message reached\n");
fflush(stdout);
print_pkt(llc_data, llc_len);
net_send_llc(llc_data, llc_len, ul);
/* mark frags as used */
l->used = 1;
if (llc_first_bsn != bsn) {
}
llc_len = 0;
if (!skip)
t->start_bsn = bsn;
}
}
li_off += l->li;
}
/* is spare data valid? */
if (l->m) {
if (llc_len) {
printf("spare and buffer not empty!\n");
print_pkt(llc_data, llc_len);
fflush(stdout);
}
if ((f->len > li_off) && (f->len-li_off < 65536)) {
memcpy(llc_data, &f->data[li_off], f->len-li_off);
llc_len = f->len - li_off;
llc_first_bsn = bsn;
llc_last_bsn = bsn;
t->start_bsn = bsn;
}
}
}
}
/* shift window if needed */
if (((t->last_bsn - t->start_bsn) % 128) > 64) {
t->start_bsn = (t->last_bsn - 64) % 128;
printf("shifting window\n");
fflush(stdout);
}
}