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Hi folks! I'm having a little problem and I'm a bit confused about it.
See... I'm working on this VoIP project (I need to use make direct calls to
Windows API). I started working using C# but since I've got to access the
API constantly I'd rather write all low-level stuff in C++ and create the UI
using C#. So far so good... I created a sniffer socket (in order to
determine if it's H.323 compliant). This routine was written firstly in C#
but since I want to have all low level stuff in C++ I ported it to. Ok... My
problem is the next...
I have somthing like this (This code works OK)...
protected virtual unsafe object[] ParseIPHeader(byte[] packet, int
length) {
short src_port = 0, dst_port = 0;
object[] retval = new object[6];
fixed(byte* packetdata = packet) {
CCommon.IPHeader* ipheader = (CCommon.IPHeader*) packetdata;
// Rest of code goes here...
}
Here IPHeader is a struct I use to store IP packet's header... Then I have
the new C++ code...
Object* CRawSocket::ParseIPHeader(Byte packet[], int length)[] {
short src_port = 0, dst_port = 0;
System::Text::StringBuilder *src_address, *dst_address;
Object *retval[] = new Object*[6];
src_address = new System::Text::StringBuilder();
dst_address = new System::Text::StringBuilder();
Byte *packeddata = __try_cast< Byte *>(&packet[0]) ;
CCommon::IPHeader *ipheader = (CCommon::IPHeader *) &packeddata;
// Rest of code goes here...
}
My problem is that I don't get the same results even though it's almost the
same code
As we all know in C# we pass "addresses" so there's no need to write
fixed(byte* packetdata = &packet) // wrong!
but in the C++ world I need to pass the address
I've tried this...
Byte* packeddata = packet; // I get error C2440: 'initializing' : cannot
convert from 'unsigned char __gc[]' to 'unsigned char __gc *'
Byte *packeddata = __try_cast< Byte *>(&packet[0]); // This compiles OK
but it doesn't get the address I need :but the char value instead :s
I need some help with this... Any Ideas?
Thanks in advance
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