Hi Oliver, On Tue, Mar 05, 2024 at 02:31:48PM -0500, Oliver Crumrine wrote: > Hi Alex, > I have attached two programs in the form of C source code below. No > special compilation options required. To change between the three > different socket options outlined in my patch, there are two options on > line 16 and 18 with a comment above them explaining how to use the > fields. > > Here's how to use the programs: > 0. Make sure you have netcat installed. > 1. Compile the dgram one. > 2. Run it. > 3. Run nc localhost 8888 -u (in a seperate terminal window or tab) > 4. Type whatever into netcat and press enter > 5. Observe that there is a control message recieved, and there is a byte > printed, which is the first byte of the data in the control message. Can't reproduce this. The terminal running nc(1) isn't printing anything. alx@debian:~$ which nc /usr/bin/nc alx@debian:~$ which nc | xargs realpath /usr/bin/nc.openbsd alx@debian:~$ dpkg -S /bin/nc.openbsd netcat-openbsd: /bin/nc.openbsd > 6. You may repeat this for the three different socket options. > 7. Repeat for the stream one, but use nc localhost 8888 (without the -u) > for #5. > 8. Observe that there are no control messages recieved with the stream one, > and byte is 00, which is the initial value of the variable, before it has > a value assigned when the control messages (of which there are none) are read. > > Thanks, > Oliver Have a lovely day! Alex -- <https://www.alejandro-colomar.es/> Looking for a remote C programming job at the moment.
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