Hello,
There is a bug in rtnet-0.9.9/examples/generic/linux_server.c as well
as in current SVN.
Details:
The variable clientLength is not initialized before it is passed to
recvfrom. Yet, according to "man 2 recvfrom" (debian etch) it should be
"initialized to the size of the buffer associated with from".
I tried the program without my bugfix (below) and it did not work
(AFAIR "recvfrom() invalid parameter" or wrong address displayed after
RCV), with the fix it worked as expected.
Fix:
just add clientLength initialization. see attached patch.
Bye,
Wolfgang
--- svn/examples/generic/linux_server.c 2007-10-17 11:37:44.000000000 +0200
+++ fixed/examples/generic/linux_server.c 2007-10-16 20:39:55.000000000 +0200
@@ -49,6 +49,7 @@
}
for (;;) {
+ clientLength=sizeof(clientName);
size = recvfrom(udpSocket, mesg, MAX_MESG_SIZE, 0,
(struct sockaddr *)&clientName, &clientLength);
if (size == -1) {
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