[R] Writing a Long across the network?

[Prof Brian Ripley]

On Fri, 12 Dec 2008, Saptarshi Guha wrote:

> Hello,
> 	I have to write  single Long to a server written in java. The server
> passes the input as
>
> 	in.readLong() // it expects to receive 8 bytes
>
> 	In Python, i can do it by sending struct.pack( "!q", value)
>
> 	However, I have tried this
> 	writeBin(length(x),con=conn,endian="big") #conn opened in binary
>
> 	But the response on the server side is wrong, eg. 1 is received as
> 4294967297
>
> 	How do I then write  long across the network from R?

Tell writeBin() the 'size' you want: see its help page.


>
> 	Thank you
> 	Saptarshi
>
>
> Saptarshi Guha | saptarshi.guha at gmail.com | http://www.stat.purdue.edu/~sguha
>
>
>
> 	[[alternative HTML version deleted]]
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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