libmysql.c:

  net->max_packet_size= max(net_buffer_length, max_allowed_packet);

}

/*

  This function is used to create HEX string that you

  can use in a SQL statement in of the either ways:

    INSERT INTO blob_column VALUES (0xAABBCC);  (any MySQL version)

    INSERT INTO blob_column VALUES (X'AABBCC'); (4.1 and higher)

  The string in "from" is encoded to a HEX string.

  The result is placed in "to" and a terminating null byte is appended.

  The string pointed to by "from" must be "length" bytes long.

  You must allocate the "to" buffer to be at least length*2+1 bytes long.

  Each character needs two bytes, and you need room for the terminating

  null byte. When mysql_hex_string() returns, the contents of "to" will

  be a null-terminated string. The return value is the length of the

  encoded string, not including the terminating null character.

*/

unsigned long

mysql_hex_string(char *to, const char *from, unsigned long length)

{

  char *to0= to;

  const char *end;

  static char hex[]= "0123456789ABCDEF";

  for (end= from + length; from < end; from++)

  {

    *to++= hex[((unsigned char) *from) >> 4];

    *to++= hex[((unsigned char) *from) & 0x0F];

  }

  *to= '\0';

  return to-to0;

}

/*

  Add escape characters to a string (blob?) to make it suitable for a insert

  to should at least have place for length*2+1 chars