how to use httpc_get_file

[Lmali.1]

Hi

I want to download file from HTTP using httpc_get_file

Is there any example how to use it?

I don't know what to put in each variable.

err_t httpc_get_file(const ip_addr_t* server_addr, u16_t port, const char* uri, const httpc_connection_t *settings, altcp_recv_fn recv_fn, void* callback_arg, httpc_state_t **connection)

PS

If you have any other working way to download file from http, I will like to know...

Thanks,

Lior

[Cedric Boudinet]

Hello

Here an example on how to use this function.

To start the download:

httpc_connection_t http_settings;
httpc_state_t *connection;
void try_http_conn()
{
	ip4_addr_t host;
	IP4_ADDR(&host, 192,168,0,2);
	http_settings.use_proxy =0;
	http_settings.headers_done_fn = NULL;
	http_settings.result_fn = my_httpc_result_fn;
	httpc_get_file(&host, 8080, "/index.html", &http_settings, my_http_cb, 0, &connection);
}

Then you have to declare the callbacks

err_t my_http_cb(void *arg, struct tcp_pcb *tpcb, struct pbuf *p, err_t err)
{
	printf("tcp_recv_fn:\n");
	for(uint16_t i=0;i<p->len;i++)
		printf("%c", ((char*) p->payload)[i]);
	printf("\n");
	return ERR_OK;
}
 
void my_httpc_result_fn(void *arg, httpc_result_t httpc_result, u32_t rx_content_len, u32_t srv_res, err_t err)
{
	printf("my_httpc_result_fn %d %ld %ld\n", httpc_result, rx_content_len, srv_res);
        // if the download succeeds srv_res should be 200, httpc_result 0 (HTTPC_RESULT_OK) and rx_content_len!=0
}

In my_http_cb one should handle the payload to retrieve the download content.

Hope it helps.

Bests

[Cedric Boudinet]

It seems that one should also dereference the packet buffer before returning from the http callback:

pbuf_free(p);