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Can bind() 2 or more IP Address to respectively different socket by using NDK?

NAO EMOTO
Prodigy 60 points
Other Parts Discussed in Thread: OMAP-L138

We want to bind() 2 or more IP Address to respectively different socket by using NDK.

We created 2 sockets by using socket() in our application and bind() IP Address to sockets.

socket 1 : 192.168.0.100

socket 2 : 192.168.0.200

 

We tried to run our application on a board (Processor:OMAP-L138) and ping to 192.168.0.100 or 192.168.0.200 from PC.

But, we could get echo reply only from 192.168.0.100, there were no echo reply from 192.168.0.200.

Please tell me how to bind() 2 or more IP Address to respectively different socket.

 

  • 0
    TI__Mastermind 45025 points

    Hi NAO EMOTO,

    Which version of the NDK are you using? BIOS version?

    Which hardware platform?

    There have been customers who have successfully done this, however it seems there is a limitation with binding multiple IP addresses in the NDK - the addresses must be on different sub nets.

    Please refer to this forum for some more details.

    Steve

  • 0 in reply to Steven Connell
    Prodigy 60 points

    Hi Steven,

    Thank you for your response, and I'm sorry for the delayed response of me.

     

    Steven Connell said:

    Which version of the NDK are you using? BIOS version?

    Which hardware platform?

    NDK version : 2.22.03.20

    BIOS version : 6.35.04.50

    Hardware Platform : TMDXLCDK138

     

    Steven Connell said:

    There have been customers who have successfully done this, however it seems there is a limitation with binding multiple IP addresses in the NDK - the addresses must be on different sub nets.

    We want to bind() multiple IP address in same subnet to different sockets,
    please tell me how to do this.

  • 0 in reply to NAO EMOTO
    TI__Mastermind 45025 points

    Well, as I mentioned previously it seems that there is a limitation with binding multiple IP addresses to the same interface unless they are on different sub nets.

    However, you can try with code similar to this (pseudo) code:

        CI_IPNET NA;

        HANDLE      hCfgIpAddr;

        /* Setup manual IP address */
        bzero(&NA, sizeof(NA));
        NA.IPAddr  = inet_addr("146.252.161.45");
        NA.IPMask  = inet_addr("255.255.255.0");
        strcpy(NA.Domain, "demo.net");
        NA.NetType = 0;

          /* add a new static IP entry */
        CfgAddEntry(0, CFGTAG_IPNET, 1, CFG_ADDMODE_DUPLICATE ,
                sizeof(CI_IPNET), (UINT8 *)&NA, 0);

        NA.IPAddr  = inet_addr("146.252.161.50");

        /* add a new static IP entry */
        CfgAddEntry(0, CFGTAG_IPNET, 1, CFG_ADDMODE_DUPLICATE ,
                sizeof(CI_IPNET), (UINT8 *)&NA, 0);
    }

    Steve

  • 0 in reply to Steven Connell
    Prodigy 60 points

    Steven,

    Thank you for your advice.

    We tried with your code.

     

    As a result,

    it is successful to ping to IP Address added by the first CfgAddEntry().

    But, second CfgAddEntry() return the following Error code:

     

    CfgAddEntry Error Code：-101

    CFG_GET_SERVICE_ERROR(-101) Error Code:-1

     

    Could you give me any advice?

  • 0 in reply to NAO EMOTO
    TI__Mastermind 45025 points

    Hi Nao Emoto,

    Unfortunately it simply isn't supported at this time.  The following enhancement request has been filed to track this:

    SDOCM00101855 Add IP aliasing support to NDK

    The best I can offer you at this time is the work around mentioned previously, with the limitation of the IP addresses being on different subnets.

    Steve

  • 0 in reply to Steven Connell
    Prodigy 60 points

    Steven,

     

    I could understand "multiple IP Address(in same subnet) on NDK" is not supported now.

    Thank you for your kind help.

     

    Nao Emoto