vpr::sim::DNS class Reference

Given an Internet name or dotted-decimal address, this returns the IP address in network byte order.

00058 {
00059    vpr::Uint32 found_addr;
00060 
00061    // if name is found in lookup, return the address
00062    if ( mDnsAddressLookup.count(addr_str) > 0 )
00063    {
00064       found_addr = mDnsAddressLookup[addr_str];
00065    }
00066    // if not found, then make an entry for the new address.
00067    else
00068    {
00069       union
00070       {
00071          vpr::Uint8 bytes[4];
00072          vpr::Uint32 value;
00073       } addr;
00074       int retval;
00075 
00076       vpr::Uint32 temp1, temp2, temp3, temp4;
00077       retval = sscanf(addr_str.c_str(), "%3u.%3u.%3u.%3u", &temp1, &temp2,
00078                       &temp3, &temp4);
00079       addr.bytes[0] = (vpr::Uint8) temp1;
00080       addr.bytes[1] = (vpr::Uint8) temp2;
00081       addr.bytes[2] = (vpr::Uint8) temp3;
00082       addr.bytes[3] = (vpr::Uint8) temp4;
00083 
00084       if ( retval == 4 )
00085       {
00086          found_addr = vpr::System::Ntohl(addr.value);
00087       }
00088       else
00089       {
00090          found_addr = mUniqueGenerator++;
00091       }
00092 
00093       mDnsAddressLookup[addr_str] = found_addr;
00094    }
00095 
00096    return found_addr;
00097 }

Public Methods
	DNS ()
vpr::Uint32	lookupAddress (const std::string &addr)
	Given an Internet name or dotted-decimal address, this returns the IP address in network byte order. More...
Protected Attributes
std::map< std::string, vpr::Uint32 >	mDnsAddressLookup
vpr::Uint32	mUniqueGenerator

vpr::sim::DNS Class Reference

Public Methods

Protected Attributes

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation