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Hi Artem,

  only a few comments from me:

Artem Trunov wrote:
> Hi,
> 
> Few thoughts about xrdcp, while work is in progress.
> 
> 1. It should support multistream copy, i.e. multiple connections to
> xrootd. But it must also support single stream only, i.e. with no control
> stream etc. Multiple streams imporove WAN performance, sigle stream only
> usefull for other stuff.
> 

I believe that this is not possible, since by construction the client 
multiplexes the connection instead of multiplying them. This might be a 
decision to be done at the client level, which does not involve xrdcp 
itself, which is only an application which makes use of it.

> 2. It should support custom TCP buffer size.
> 

I agree.

> 3. It should support stdin/stdout data pipes. Usefull for piping to/from
> tar archives and to filters like 'less' and 'grep', if we will need to
> read log files over xrootd.
> 

This also can be reasonable. Obviously the first alpha version won't 
have it, but we can choose at which stage we can implement this kind of 
things.

> Artem.


Fabrizio