Very Computer

1. recv() fails after 1K.

I am developing an interface to a Credit checking bureau in South Africa. My
system is an RS6000 running
AIX 4.2. I can successfully connect, send and receive but I can only receive
1K.

The following code extract should show what is happening. Does anyone have
any experience/ideas on what is
going wrong.

Samples of the open,connect, and send sequence

       if((send_sock_s=socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0)
       if(connect(send_sock_s, &sock_server, sizeof(sock_server)) < 0)
       ret=send(send_sock_s_p, &tcp_buf[0], TCPPKTSZ, 0);

    int ret                    = 0;
    int packet_len      = 4516;
    int send_ndx        = TCPHEADSZ;

     while (send_ndx < packet_len )
     {
         fprintf(stderr, "Waiting for %d bytes Received %d cum %d\n",
             packet_len - send_ndx,ret,send_ndx);

         ret=recv(send_sock_s_p, &tcp_buf[send_ndx], packet_len - send_ndx,
0);

         if ( ret < 0 )
         {
             fprintf(stderr, "recv returned %+d errno =%d\n",ret,errno);
             break;
         }

         send_ndx+=ret;
     }

The results are as follows :-

Waiting for 4508 bytes Received 0 cum 8
Waiting for 4004 bytes Received 504 cum 512
Waiting for 3492 bytes Received 512 cum 1024
recv returned -1 errno = 73  (Connection reset by peer)

This happens consistently as 1024 bytes, even if recv size is set to 128 or
512.

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