[Click] ToSocket question

[Yun Mao]

How to send my patch?

I basically update ToSocket::selected() according to ToDevice::selected(), 
and added UNIX DGRAM socket type, which is useful (and more efficient than 
local UDP/UNIX STREM sockets according to my test) in communication 
between click and other processes. There might be a bug in UNIX 
SOCK_STREAM socket, and I might have corrected it, but I'm not sure 
because I'm not actively using it right now.

Yun


On Mon, 14 Mar 2005, Eddie Kohler wrote:

> Hi Mark, Yun,
>
> I'd love to see your current patches to To/FromSocket!  In particular, Yun, 
> what'd you do to UNIX domain sockets?
>
> Eddie
>
>
>
> On Mar 7, 2005, at 2:29 PM, Mark Huang wrote:
>
>>> I'm trying to understand why ToSocket is an agnostic type. It seems to me 
>>> that it should behave pretty much like ToDevice.u One big difference is 
>>> that (from my understanding from the source) ToSocket will keep pulling 
>>> packets from the input, no matter whether the socket is available to send 
>>> stuff or not. I found this could block click in sendto(). And because it 
>>> will pull all packets from the input, Queueing won't help.
>> 
>> I wrote ToSocket; originally, it was a direct derivative (read: stolen 
>> goods) of ToDevice, which was agnostic, but I fell behind in maintaining 
>> ToSocket and it looks like ToDevice is now l/h. The behavior your mention 
>> should probably be the default, i.e. open a non-blocking socket and pull 
>> packets when the socket becomes available. Patches welcome, I've been 
>> meaning to submit some recent changes I made to it, to Eddie.
>> 
>>> Another question: Did anyone try the UNIX socket before? I had to hack the 
>>> sendto call to send because my Linux complained that the socket is 
>>> connected and won't do the job.
>> 
>> I tested it at one point when I was writing it, but haven't used it in a 
>> long time. Again, patches welcome. I'm a little busy right now, but should 
>> have some time for Click very soon...
>> 
>>> BTW, First week in click, I have to say cool stuff and fun!
>> 
>> If you're using Click on PlanetLab, let me know. All of the elements I've 
>> contributed are directly related to PlanetLab. I'd like to start a topic on 
>> the PlanetLab Wiki to document some of the interesting work that's going on 
>> with Click.
>> 
>> --Mark
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>