OSLib socket programming

Hello,
I’m fiddling with RISC OS, and would like to try to move over some sockets based code I’ve got running elsewhere.

I need to wait on a socket to have to data, and act on that data ASAP. I also need to write to the same socket. I’d like to stick with the ROOL C Compiler, and OSLib, rather than move to GCC.

Am I correct in thinking that eventinternet_async is the way to wait for information on a socket, without blocking?

My code is coming from a platform with sound multithreading, so on there, I just ran the reading in a different thread, therefore not blocking the UI.

Is there any example code showing how to do this, wait to read on a socket, without blocking?

Cheers

Garry

It has been an eternity (decade) since I last did any sockets programming… But don’t you just set the socket to non blocking? Then when you call a socket SWI and it will return a specific error (would block?) and you just keep doing that until the data arrives? Something like that…

Start here. Follow the “Step #” links at the bottom.

http://www.paymentlabs.com/riscos/tutorials/programming/sockets/riscos_specifics_to_socket_programming

Hi Rick,
Thanks for the link, however, that is using UNIXLib, and presumably GCC? I’d rather stick with OSLib and Norcroft really.

I probably don’t have a particularly satisfactory reason why I don’t want to use UNIXLib and GCC, but then I don’t have a satisfactory reason why I’m using RISC OS at all!

Any pointers/tips much appreciated.

Cheers

Garry

Hi Garry, That doesn’t use UNIXLib/GCC
It uses the norcroft compiler.
It should be enough to get you going, although I have a feeling it’s got a function included that isn’t needed (bad cut and paste by me!)

And the reason I use norcroft, is if I wanted to use GCC I would use linux.
If you need any help / assistance - malcolm at paymentlabs dot com

Cheers,

Malcolm

And the reason I use norcroft, is if I wanted to use GCC I would use linux.

What’s GCC got to do with linux. It’s just one of many different platforms it runs on. GCC existed long before linux.

Running gcc on Linux is easy, tested, the libraries all work. It supports posix threading well. On most other platforms it’s an exercise in pointless pain. Many things existed before Linux but the reality is most run better and easier on Linux.
So gcc has a lot to do with Linux…
I’ve had enough fun playing with yacc to last me a lifetime ;-)

Hi Malcolm,
Thank you very much for that, I will try to build your example today and see how I go. Any includes folders/libraries to link I should be aware of? I saw your makefile at the end, I have a passionate hatred for Makefiles, so I might just stick to my little build script!

Thanks again, I’ll be in touch if I require any more help.

Garry