Re: sockts and read() write()

[Graham Murray]

ranjith kumar <ranjithproxy@xxxxxxxxx> writes:

> Hi,
>   I am new to socket programming.
>
>     There are  two programs(client on target machine, server on host
> machine ) , communicating through a single  socket.
>
> Server program writes data of (say) 100bytes, 200 bytes, 500 bytes and
> 1000bytes,  suceessively calling write() 4 times.
>
> My question is on client side, if  I call read() 4 times, will get
> 100bytes, 200bytes, 500bytes and 1000bytes of data successively and
> ALWAYS? Or is it possible that with a single read()  I  may get all
> 100+200+500+1000bytes of data???

If you are using UDP, then you will get 100, 200, 500 and 1000 bytes in
4 calls() to read. If you are using TCP, then you could get all 1800
bytes in a single call, or it may need multiple calls to read().
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