[lwip-users] lwip_sendto hanging with lwip 2.0

[Neerav Patel]

Hi

I am able to send packets via lwip_sendto in the main thread that I created.

What I then wanted to do was to use a timer in the main thread, using sys_timeout function to then do the sendout with the timer expires.  When I do this lwip_sendto just hangs there and I cant receive any packets or send any subsequent packets.

As mentioned previously, if I move the lwip_sendto to the main loop everything works fine again.  What could be causing this?

Placed below is a simplified version of what I am trying to do.

static void

send_actual_pkt( void * args )

{

      uint8_t pkt[576];

      // ... populate the pkt

      uint16_t len = generate_pkt();

      if ( lwip_sendto( s, pkt, len, 0, (struct sockaddr *)&from, sizeof(from) ) != len )   <---- hanging here!!!!

      {

         uart_printf( "Didnt send correctly %x\n", len );

      }

}

while( 1 )

   {

      if ( (lwip_recvfrom(s, raw_buf, sizeof(raw_buf), 0, (struct sockaddr*)&from, (socklen_t*)&fromlen)) > 0 )

      {

                  sys_timeout( ms, send_actual_pkt, NULL );

      }

   }

Thanks in advance.