Am 02.07.2010 um 19:43 schrieb Jens Alfke:
> On Jul 2, 2010, at 5:36 AM, Alexander Spohr wrote:
>
>> I have some streams gotten from NSNetServices getInputStream:outputStream:.
>> I send very small chunks (from 1 to 1000 bytes) of data through them. I
>> would like to flush the stream after I wrote a chunk to get the data
>> immediately sent to the other side.
>> Is that possible or does the NSOutputStream flush after every
>> write:maxLength: anyway?
>
> TCP has some finely-tuned algorithms to decide when to send the buffer.
> Usually it’s best not to second-guess these, but there are some cases where
> you do need to. Terminal protocols like telnet and ssh use setsockopt to set
> a special immediate mode (I can’t remember the name of the option but it’s in
> the man page.).
TCP_NODELAY is not in the man page. But your pointer made me remember the thing
I needed:
int yes = 1;
setsockopt(CFSocketGetNative(aSocket), IPPROTO_TCP, TCP_NODELAY, (void *)&yes,
sizeof(yes));
Thanks a lot,
atze
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