Re: [lwip-users] Socket read/write and threads

[Alain Mouette]

I can send you a snipplet that works fo me, with FreeRTOS

The select is a bit of black magic, I don't remember exactly how it 
works, but I do remember that it is standard linux or socket programing.

I also needed a queue for outgoing messages, so that it is sent from the 
correct thread.

-----
        fd_set rfds;
        struct timeval tv;
...
        xStatus = xQueueReceive ( xQueueSendToServer, &pMess, xTickToWait);
        if ( xStatus == pdPASS )
                lwip_send(sock, pMess->mBuf,  pMess->mLen, 0);
        // Use select to check if there is data
        FD_ZERO(&rfds);
        FD_SET(sock,&rfds);
        tv.tv_sec=0;tv.tv_usec=0;
        lwip_select(sock+1,&rfds,NULL,NULL,&tv);
        if (FD_ISSET(sock,&rfds)){
                // *CAN ONLY READ* if ther is data...
                if ((tam=lwip_read(sock,msgBuf, MAX_MSG))>0){
                        MessageFormServer(msgBuf, tam, sock);
                }
        }
------

Alain