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setsockopt () failed

Patrick S
Intellectual 360 points


Greetings TI-Community,

INT32 sendbuf = 1024;
if(!setsockopt( sockUDPClient, SOL_SOCKET, SO_SNDBUF, &sendbuf, sizeof(sendbuf) )) printf("\nError setup SO_SNDBUF.");
if(!setsockopt( sockUDPClient, SOL_SOCKET, SO_RCVBUF, &sendbuf, sizeof(sendbuf) )) printf("\nError setup SO_RCVBUF.");

I realize that the default sendbuffer is limited to 256 byte. So I want to change this, but the setsockopt() call allways returns a error. What do I wrong?

Thank You
Patrick

  • 0
    Mastermind 6325 points

    Patrick,

    I never used the return value but always get read the value to check it after I set it.  Have you used the get function to see if its being set?  Here is my code, it looks just like yours :)

    	struct sockaddr_in 	myinfo;
	struct timeval     	to;
	int                	i;
	int					opt;
	SOCKET				mySocket;

	mySocket = socket(AF_INET, SOCK_DGRAM, 0);

	to.tv_sec  = 0;
	to.tv_usec = 0;
	setsockopt( mySocket, SOL_SOCKET, SO_SNDTIMEO, &to, sizeof( to ) );
	setsockopt( mySocket, SOL_SOCKET, SO_RCVTIMEO, &to, sizeof( to ) );

	i = sizeof(opt);

	opt = 1;
	setsockopt( mySocket, SOL_SOCKET, SO_BLOCKING, &opt, sizeof( opt ) );

	opt = 64000;
	setsockopt( mySocket, SOL_SOCKET, SO_SNDBUF, &opt, sizeof( opt ) );

	getsockopt( mySocket, SOL_SOCKET, SO_SNDBUF, &opt, &i);

    Brandy

  • 0 in reply to Brandy Jabkiewicz
    TI__Mastermind 20790 points

    Patrick,
    Can you try the below sequence and let us know the status.

    INT32 sendbuf,recvbuf, retVal;

    /* Configure the Send buffer size */
    sendbuf = 1024;
    retVal = setsockopt(sockUDPClient, SOL_SOCKET, SO_SNDBUF, &sendbuf, sizeof(sendbuf));
    if(retVal)
    printf("\nError setup SO_SNDBUF.");

    /* Configure the Receive buffer size */
    recvbuf = 1024;
    retVal = setsockopt(sockUDPClient, SOL_SOCKET, SO_RCVBUF, &recvbuf, sizeof(recvbuf));
    if(retVal)
    printf("\nError setup SO_RCVBUF.");

  • 0 in reply to Pubesh
    Intellectual 360 points

    Greetings Pubesh,

    the return value of setsockopt if succeeded is 0 (spru524h.pdf). So !0 triggered my Error. My fault.

    But if I configure this buffer sizes I got a socket failure: sendto() failed with error: 40.

    I also recognize that the recvfrom function only fill up my UDPrecv vector for 256 Bytes even if the i value is 1024 (= received Bytes)

    i = (int)recvfrom( s, (void **)&UDPrecv, 1024, 0,(PSA)&sin1, &tmp );
if (i>0)printf("\nUDP Server received UDP with %d bytes.", i);

  • 0 in reply to Patrick S
    TI__Mastermind 20790 points

    Patrick,

    You call the fdError() and find the error number, check the error status in the serrno.h file.

    If you could not solve this issue, share your code.

  • 0 in reply to Pubesh
    Intellectual 360 points

    #define EMSGSIZE        40      // Message too long

    So I raised up the buffer sizes to 2048 and it worked.

    But my receive vector still get only 256 Bytes. Any sugestions?

    Thank You

    Patrick

  • 0 in reply to Patrick S
    TI__Mastermind 20790 points

    Patrick,

    Glad to hear for fix the issue. 

    For receive vector: check this sequence on your code before NC_NetStart().

    // UDP Receive limit
    rc = 8192;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKUDPRXLIMIT,
    CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );

    This may be giving issue.