I was wondering if anyone has worked with raw sockets and/or could help me
with the following problem.
I am trying to bind a raw/raw socket, so I can build the MAC header, and am
running into trouble trying to use the NetSocketAddrRawType in the way the
documentation, from Palm, suggest.
Basically I do the NetLibConnect first, using NetLibIFGet(nAppNetRefnum, 0,
&ifCreator, &ifInstance); to get my Creator and Instance.
Then I do a nSocket = NetLibSocketOpen( nAppNetRefnum,
netSocketAddrRaw,netSocketTypeRaw, netSocketProtoIPRAW,AppNetTimeout, &err);
All this goes find till I get to the NetLibSocketBind, according to the
docs,
" Raw sockets in the netSocketAddrRaw domain with no protocol
In this case, you must bind the socket to an interface using
NetLibSocketBind, passing a NetSocketAddrRawType
structure for the socket address. The instance and creator
specify which interface the caller wants to receive raw
packets from."
If I use the NetSocketAddrRawType structure, in my NetLibSocketBind it bombs
out. I set the struct up as follows:
NetSocketAddrRawType netRawType;
netRawType.family = AF_RAW;
netRawType.ifInstance = ifInstance;
netRawType.ifCreator = ifCreator;
NetLibSocketBind( nAppNetRefnum,
nSocket,
(NetSocketAddrType*)&netRawType,
sizeof(netRawType),
AppNetTimeout,
&errno);
Thing is though if I use a NetSocketAddrINType
structure then the NetLibSocketBind says everything is fine, but then this
does not jive with the docs.
My NetSocketAddrINType looks like this:
mysockettype.family = AF_INET;
mysockettype.port = 0;
mysockettype.addr = 0;
Does anyone see anything I'm doing inherently wrong here or have any
suggestions:?
Thanks Carl
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