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UDP multicast message send error

syed ahmad

Hi,

I cannot send UDP multicast message in ARM to 1900 port. It is SSDP.
netUDP_Send failed with unspecified error.

Any idea?

I will need full SSDP working in keil/ARM.

int32_t udp_sock;

udp_sock = netUDP_GetSocket (udp_cb_func);

netStatus net_status;

if (udp_sock > 0)
{ // Open UDP port 1000 for communication. net_status = netUDP_Open (udp_sock, 1900); // Let UDP Multicast datagrams cross a router. net_status = netUDP_SetOption (udp_sock, netUDP_OptionTTL, 2); NET_ADDR addr = { NET_ADDR_IP4, 1900, 255, 255, 255, 255 }; uint8_t *sendbuf;

const char* buf = "NOTIFY * HTTP/1.1\r\nHOST: 239.255.255.250:1900\r\nCACHE-CONTROL: max-age=100\r\n" "NT: upnp:rootdevice\r\nNTS: ssdp:alive\r\nSERVER: device/14.0.0, ProBuf, UPnP/1.1\r\nX-User-Agent: fkuehne-upnpx\r\n\r\n";

u32 size = strlen(buf);

sendbuf = netUDP_GetBuffer (size);
strncpy((char*)sendbuf, buf, size);

const uint8_t sgroup[NET_ADDR_IP4_LEN] = { 239,255,255,250 };
char ip_ascii[16];
if (netIGMP_Join (0, sgroup) == netOK) { netIP_ntoa (NET_ADDR_IP4, &sgroup[0], ip_ascii, sizeof(ip_ascii));
} else { return ES_NoError; }

net_status = netUDP_Send (udp_sock, &addr, sendbuf, size); }

Thanks,
Naeem

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