Raw sockets in Windows CE 5.0?

Question

What must I do to use raw sockets in Windows?

CE 5.0? The following code always fails with the error:

socket failed, err:10044 (The support for the specified socket type does not exist in this address family. )

 
 

WSAData wsaData;

int n;

SOCKET s;



n = WSAStartup(MAKEWORD(2,0), &wsaData);



if (n < 0) {

 printf("WSAStartUp failed, err:%d\n", WSAGetLastError());

} else {

 s = socket(AF_INET, SOCK_RAW, IPPROTO_IP);

 

 if (s < 0) {

 printf("socket failed, err:%d\n", WSAGetLastError());

 }

}

Answer 1

It looks like you cannot create a raw socket specifying IPPROTO_IP: try with IPPROTO_RAW which, in winsock.h is #define'd as:

 

#define IPPROTO_RAW             255             /* raw IP packet */

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Luca Calligaris lucaDOTcalligarisATeurotechDOTcom www.eurotech.com Check my blog: http://lcalligaris.wordpress.com

Answer 2

Thanks for reply.

Passing the arguments (AF_INET, SOCK_RAW, IPPROTO_RAW)  e.g. (2,3,255) to the socket() function gives the same return value SOCKET_ERROR with LastError 10044. The same appears for any value from 0x0 to 0xFFF as the third parameter value.

Answer 3

Windows CE 5.0 supports raw sockets (for IRCOMM). But there is no support for raw socket sockets in the AF_INET family. So IPPROTO_RAW is useless.

But you can use the NDISUIO module to mimick raw sockets. The NDISUIO API provides facilities to send packets with arbitrary content and receive anything on a Ethernet adapter. So you get the same as you would get with raw sockets, but you must change the code to use the network adapter.

Helge