FAQ-0548 My program hangs when I call GetProtocolInfo() from RSocketServ


FAQ-0548 My program hangs when I call GetProtocolInfo() from RSocketServ

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Classification:	C++	Category:	Comms
Created:	01/03/2001	Modified:	08/24/2001
Number:	FAQ-0548
Platform:	ER5

Question:
I make a call to RSocketServ::NumProtocols to get the number of loaded protocols. I then call GetProtocolInfo() in a loop to get information on each of the protocols. My app is freezing on the very first iteration at index 0. What's happening?

Answer:
The Indexes for the protocols start a 1 not 0. So if there are 7 loaded protocols the index numbers go from 1 to 7 not 0 to 6 as you might think. Here is a section of code. All the error checking has been removed for easy of reading. ss is the socket server:

TUint numProtocols;
User::LeaveIfError(ss.NumProtocols(numProtocols));

for(TUint i=1; i <= numProtocols; i++)
{
TProtocolDesc protoInfo;
User::LeaveIfError(ss.GetProtocolInfo(i,protoInfo));
console.Printf(_L("Protocol %d, Name is %s, Version is %s\n"), i, protoInfo.iName.PtrZ(), protoInfo.iVersion.Name().PtrZ());
}