Hi Bill,sorry that was my mistake that I didn't include that in my previous
post, but actually I have included that in my udp_client_init(), the problem is
that I have forgot ot include that piece of line before posting it on the forum.
Now I am furnishing theudp_client_init() one more time:
void udp_client_init(void){ struct udp_pcb *pcb; struct pbuf *p;
pcb = udp_new(); if(pcb) { udp_bind(pcb, IP_ADDR_ANY, UDPPORT);
udp_recv(pcb, data_recv, NULL); }}
But still I could not get the desired result. Any more suggestions!
Thank You and Regards,Tech Greek.
From: [email protected]
To: [email protected]
Subject: RE: [lwip-users] Reading UDP data on the client side which is sent
by UDP Server!
Date: Mon, 27 Sep 2010 08:40:56 -0400
You need:
pcb = udp_new();
in udp_client_init.
Bill A
From:
[email protected]
[mailto:[email protected]] On Behalf
Of Teckinal Greek
Sent: Monday, September 27, 2010 7:30 AM
To: lwip
Subject: [lwip-users] Reading UDP data on the client side which is sent
by UDP Server!
hi,
I
have wrote client code for initiating a UDP client using Raw API. I could
connect to a UDP server and can send the data packets which I can see on the
server side. Similarly I wanted to receive the datagram packets sent by the
server and display it on my board using a simple printf statement. But the
problem is that in this piece of code
"udp_recv(pcb,
data_recv, NULL);"
I
am calling the call back function 'data_recv', but for some reason it is not
calling the function i.e it is not entering that part of the function.
Also
here is my code for reading and printing the data which i have received
static
void data_recv(void *arg, struct udp_pcb *pcb, struct pbuf *p, struct ip_addr
*addr, u16_t port)
{
int i;
static int remframesize = FRAMESIZE;
static int copiedframe = 0;
while(remframesize > 1)
{
remframesize = remframesize - p->tot_len;
for(i = 0; i < p->tot_len; i++)
{
printf("%c",*((char*)
p->payload+i));
}
break;
}
if(remframesize < 1)
{
printf("Entire Frame Received and %d characters
remaining \n", remframesize);
remframesize = FRAMESIZE;
copiedframe = 0;
}
pbuf_free(p);
}
This
is my client init code:
void
udp_client_init(void)
{
struct udp_pcb *pcb;
struct pbuf *p;
if(pcb)
{
udp_bind(pcb, IP_ADDR_ANY, UDPPORT);
udp_recv(pcb, data_recv, NULL);
}
}
Can
anybody find out where I am making mistake such that the call back
function is not called at all, in other words it is not entering the loop.
Thanks
in advance,
Tech
Greek.
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