tcp / udp client problem

lpcware — Wed, 15 Jun 2016 18:48:54 GMT

Content originally posted in LPCWare by ccrbs on Thu Jul 25 06:35:46 MST 2013
Using tcpecho and udpecho to make tcp/udp serve, the sample can work together with freertos and lwip. I start to make tcp client. I add the following thread for it, but it can not setup a connection with PC(tcp serve). I found that I get the err=-10 after run function:netconn_connect. who can help to answer it or give the client sample code?

Mani thanks!

void tcp_client_thread(void *arg)
{
    struct netconn *conn;
    struct netbuf        *TCPNetbuf;

    err_t myerr;
    char Text[]="hello i am client!";
    static struct ip_addr serverip;
    static unsigned short serverport;

    serverip.addr = htonl(0xC0A9015A);       //192.161.1.90
    serverport=60000;
    conn = netconn_new(NETCONN_TCP);
    netconn_bind(conn,NULL,60000);

/* About a 1/7s delay */
vTaskDelay(configTICK_RATE_HZ / 14);
    printf("\033[2JTCP connect....\n");
    myerr=netconn_connect(conn,&serverip,serverport);
    if(myerr==ERR_OK)
    {
        printf("\033[2JTCP connect ok\n");
    }else{
        printf("\033[2JTCP connect err=%d\n",myerr);
    }

    TCPNetbuf =netbuf_new();
// netbuf_alloc(TCPNetbuf, 40);

    netbuf_ref(TCPNetbuf,Text,sizeof(Text));

    while(1)
    {
/* About a 1s delay */
vTaskDelay(configTICK_RATE_HZ);
            netconn_send(conn,TCPNetbuf);
            netconn_write(conn,(void *)&Text,sizeof(Text),NETCONN_NOCOPY);
vTaskDelay(configTICK_RATE_HZ / 14);
    }
}

LPC Microcontrollersのトピックtcp / udp client problem

tcp / udp client problem