I got lot crashes and count really do anything. I have no idea what is going on inside of POSIX sockets, I know roadshow is picky about having to open the interface per thread or something like that, but that cannot possibly work, I know about socket sharing, but that is below the POSIX api, so not easily accessible. Don't try to use this tftp client if you already have a TCP/IP stack or Envoy running at the same time. Careful please: this shows how you could approach this task without using an existing TCP/IP stack, just by going to the lowest available networking layer attainable on the Amiga. Which even for a "simple" protocol such as tftp is surprisingly complex. ![]() The example pretty much covers what a TCP/IP stack would do when doing, juggling IP and ARP datagrams using asynchronous I/O. LiveForIt mentioned having difficulties making SANA-II work, so maybe that example could be helpful. The example builds both for AmigaOS 2.x/3.x and AmigaOS4 and I tested it in both environments. The SANA-II tftp client available at is an example of how SANA-II compliant network device drivers may be used in practice. This is the kind of stuff you don't expect and will have to spend hours reading the old TCP/IP stack source code over For example, the connect() function has its own separate timeout which follows from how it was implemented, and that will take effect before a POSIX signal triggered by a longer alarm() timeout can. Oddly, some of the code I've seen which uses POSIX signals in order to implement timeouts for network operations makes assumptions about the socket networking API which hold on Linux but not on BSD Unix. That's a side-effect of how the AmiTCP design integrated the libresolv functionality. I stumbled upon such issues with the wget port which ships with Roadshow which would use POSIX signals to implement timeouts for DNS queries, for example, and the workarounds I tried to find didn't exactly produce the same behaviour you'd get on a POSIX system. The Roadshow implementation of the socket networking API plays within the limitations imposed upon by the Amiga operating system. For example, you can use POSIX signals to abort pending DNS queries and even Unix syscalls such as connect(), but this is not a robust approach on the Amiga. If libcurl is not working for you, it's possible that the POSIX interfaces it expects to work may not be supported by the AmigaOS architecture. How and why that would create trouble on AmigaOS4 threads I cannot tell. Roadshow requires that every client which uses it is a Process. ![]() Roadshow implements the AmiTCP V4 API, as did Miami, for example, but neither of these Amiga TCP/IP stacks use or share code of AmiTCP: They share code with the 4.4BSD-Lite2 release, directly (Roadshow) or indirectly (Miami is likely based upon What exactly are you missing in Roadshow which AROS TCP (which is built upon AmiTCP V3) is delivering? NetBSD is closest to the state of 4.4BSD-Lite2, yet porting features such as path MTU discovery from old NetBSD to the codebase which Roadshow uses has proven really hard. But it also explains why there are limitations as to what the code can do. That explains in part why Roadshow does things differently. Roadshow's a bit younger, being derived from 4.4BSD-Lite2 (1995). Some context on what I mentioned with regard to what Roadshow does, and how that tftp client code fits into the picture.įirst thing, both AmiTCP V3 and Roadshow are using old TCP/IP stacks, with AmiTCP V3 using the older one, which goes back to the late 1980'ies. I haven't been around on this site for a long time
0 Comments
Leave a Reply. |