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TCP transmission buffer size of NDK

xue han
Prodigy 150 points

I'm using the NDK packages with the version of 2_20_06_35 on the 648 platform.I want to increase my network transmission performance,so I modified some parameters,but I found that when the  transmission data reach to 500 KB above, it will appear send failure, return error code for "EWOULDBLOCK",then the network will be breakdown. I'd like to know when I'm modifying the transmission buffer size ,Whether I need to modify some other parameters?I this how to solve this problem.

Below is my configuration parameters

  rc = 16384;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKTCPTXBUF,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );
  rc = 4096;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKMINTX,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );

    rc = 8192;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKTCPRXBUF,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );

    rc = 8192;
    CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKTCPRXLIMIT,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );

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

  • 0
    Prodigy 150 points

    whether the rc can equal to 65536?and if I modify this parameter, which parameters I must to modify at the same time?

     rc = 16384;
        CfgAddEntry( hCfg, CFGTAG_IP, CFGITEM_IP_SOCKTCPTXBUF,
                     CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&rc, 0 );