As a followup to this, I was getting this same error message and found the
following:
The 6th & 7th parameters, void* fromAddrP and UInt16 * fromLenP, work fine
on the Palm device (I'm using a Symbol SPT 1740), but cause the
netErrParamErr in POSE. I looked up the Berkeley sockets function
"recvfrom" (which most closely resembles NetLibReceive) in the book Unix
Network Programming, vol 1, by W. Richard Stevens, and found that on return
the NetSocketAddrType struct pointed to by "fromAddrP" is filled in with
the address info of who initiated the connection in TCP, or who sent the
datagram in UDP. I'm using TCP and already know who initiated the
connection, so this is useless information. These two fields apparently are
only useful for UDP. In fact, the book says that "recvfrom" is not usually
used with TCP.
-- Michael
--------------------------------------------------------------------
Hi Keith & Randy,
I searched low then high and back to low and found a working example piece
of code. And guess what, NO UInt16 's !
int port;
UInt NetLibOpenRef;
int theSocket;
short SocketReceiveErr;
char* msg;
int size;
int recv = NetLibReceive(NetLibOpenRef,theSocket,
(BytePtr)msg, size,0,0,0,-1,
&SocketReceiveErr);
Alex
----- Original Message -----
From: Alex R <[EMAIL PROTECTED]>
To: Palm Developer Forum <[EMAIL PROTECTED]>
Sent: Wednesday, January 31, 2001 4:40 PM
Subject: Re: NetLibReceive, I am getting the "netErrParam Err".
> Thanks for the reply Randy, but unfortunately I get the same result. I
just
> started debugging on the pose for the reasons you stated below. And as a
> result, I have changed my code tremendously for the better. But I am
stumped
> with this problem. I have checked archives for example netlibreceive
code,
> but with no luck. If you or anyone else would be kind enough to post an
> example of a netlibreceive call, I sure would appreciate it.
>
> Thanks,
>
> Alex
>
>
> ----- Original Message -----
> From: Randy Maxwell <[EMAIL PROTECTED]>
> To: Palm Developer Forum <[EMAIL PROTECTED]>
> Sent: Wednesday, January 31, 2001 4:23 PM
> Subject: RE: NetLibReceive, I am getting the "netErrParam Err".
>
>
> > Alex,
> >
> > As Keith suggests...
> > try this:
> > UInt16 size;
> >
> > size = sizeof(ForeignAddrType);
> > recv = NetLibReceive(NetLibOpenRef, theSocket,msg, size,0,
> > (NetSocketAddrType *)&ForeignAddrType,
> > &size, // Changed
> > -1,&SocketReceiveErr);
> >
> > The release ROMs on actual devices do not have all the checks that
Debug
> > ROMs do.
> > The Debug ROMs and POSE helps you to catch errors early rather than
having
> > them go unknown on actual devices until the situation is _really_ in
bad
> > shape...
> >
> > Regards,
> > Randy Maxwell
> >
> > -----Original Message-----
> > From: Alex R [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, January 31, 2001 6:58 AM
> > To: Palm Developer Forum
> > Subject: Re: NetLibReceive, I am getting the "netErrParam Err".
> >
> >
> > Hi Kieth,
> >
> > The parameters that I'm using are:
> >
> > Word NetLibOpenRef;
> > NetSocketAddrINType ForeignAddrType;
> > NetSocketRef theSocket;
> > SWord recv;
> > short SocketReceiveErr;
> > CharPtr msg;
> > Word size,
> >
> > recv = NetLibReceive(NetLibOpenRef, theSocket,msg, size,0,
> > (NetSocketAddrType *)&ForeignAddrType,
> > (WordPtr)sizeof(ForeignAddrType),
> > -1,&SocketReceiveErr);
> >
> > I have also tried the following:
>
> >
> > recv = NetLibReceive(NetLibOpenRef, theSocket,msg, size,0,
> > (NetSocketAddrType *)&ForeignAddrType,
> > (UInt16*)sizeof(ForeignAddrType),
> > -1,&SocketReceiveErr);
> >
> > and:
> >
> > VoidHand hTest;
> > VoidPtr pTest;
> >
> > hTest = MemHandleNew(size);
> > pTest = MemHandleLock(hTest);
> >
> > recv = NetLibReceive(NetLibOpenRef, theSocket, pTest, size,0,
> > (NetSocketAddrType *)&ForeignAddrType,
> > (UInt16*)sizeof(ForeignAddrType),
> > -1,&SocketReceiveErr);
> > MemHandleUnlock(hTest);
> > MemHandleFree(hTest);
> >
> > ////////////////////////////////////////////////////////
> >
> > Again, using the emulator the NetLibReceive call returns a netErrParam
> Err??
> > It works on the actual device.
> >
> > Alex
> >
> >
> >
> > ----- Original Message -----
> > From: <[EMAIL PROTECTED]>
> > To: Palm Developer Forum <[EMAIL PROTECTED]>
> > Sent: Tuesday, January 30, 2001 7:17 PM
>
> > Subject: Re: NetLibReceive, I am getting the "netErrParam Err".
> >
> >
> > >
> > >
> > > Dude...you want us to figure out why you're getting a netErrParamErr,
> yet
> > you
> > > don't even show us your parameters???
> > >
> > > I know that one thing is wrong: you're lying to NetLibReceive with
> regards
> > to
> > > the fromLenP parameter. It wants a _pointer_ to a UInt16. You're
> passing
> > in
> > > just a UInt16! Just because you cast it to a UInt* doesn't make it a
> > UInt16*.
> > >
> > > -- Keith Rollin
> > > -- Palm OS Emulator engineer
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