hi all,
i wander the code below is right or not:
A. thread for receiving data from multicast address
DWORD WINAPI recv_thread(LPVOID lp)
{
AVIOContext * io_ctx = NULL;
unsigned char recv_buffer[1024];
int ret = avio_open2( &io_ctx,
"udp://224.124.0.1:5000?multicast=1&ttl=16&reuse=1&pkt_size=256",
AVIO_FLAG_READ_WRITE, NULL, NULL);
ret = url_setbufsize(io_ctx, 4096);
ret = avio_read(io_ctx, recv_buffer, sizeof(recv_buffer)); // is this okay?
avio_close(io_ctx);
return 0;
}
B. thread to send data to multicast address.
DWORD WINAPI send_thread(LPVOID lp)
{
AVIOContext * io_ctx = NULL;
uint8_t snd_buf[] = "abcdef";
int ret = avio_open2( &io_ctx,
"udp://224.124.0.1:5000?multicast=1&ttl=16&reuse=1&pkt_size=256",
AVIO_FLAG_READ_WRITE, NULL, NULL);
ret = url_setbufsize(io_ctx, 4096);
avio_write(io_ctx, snd_buf, sizeof(snd_buf)); // is this okay?
avio_close(io_ctx);
return 0;
}
is anyone could tell me the result. thanks._______________________________________________
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