Kieran Mansley schrieb:
Each time tcp_sent is called it tells you how much data has been
released. Keep a count of this. When your count equals the size of
data you sent, you know it's all done.
This is the original http_sent:
static err_t http_sent(void *arg, struct tcp_pcb *pcb, u16_t len) {
struct http_state *hs;
LWIP_UNUSED_ARG(len);
hs = arg;
hs->retries = 0;
if (hs->left > 0) {
send_data(pcb, hs);
} else {
close_conn(pcb, hs);
}
return ERR_OK;
}
If hs->left == 0 this does not mean that all data has already been sent
out. The last packet is just somewere in the pipeline. So the connection
cannot be closed yet.
I can remember something puzzled my when doing the first steps: Used
buffers where freed by a function called from the timers. Probably this
was the cause.
I would suggest to add bytes_to_send and bytes_acked to struct
http_state and to change the function like this:
static err_t http_sent(void *arg, struct tcp_pcb *pcb, u16_t len) {
struct http_state *hs;
LWIP_UNUSED_ARG(len);
hs = arg;
hs->retries = 0;
hs->bytes_acked+=len;
if (hs->left > 0) {
send_data(pcb, hs);
}
if (hs->bytes_acked==hs->bytes_to_send) {
close_conn(pcb, hs);
}
return ERR_OK;
}
_______________________________________________
lwip-users mailing list
[email protected]
http://lists.nongnu.org/mailman/listinfo/lwip-users
