Re: NSURLConnection changing the URL
Re: NSURLConnection changing the URL
- Subject: Re: NSURLConnection changing the URL
- From: Michael Vannorsdel <email@hidden>
- Date: Tue, 20 Jan 2009 22:17:19 -0700
I've looked into this quite some time ago and have seen
NSURLConnection keep FTP and HTTP connections open even after the
originating NSURLConnection had been deallocated. The same connection
was reused for subsequent NSURLConnections to the same destination. I
never did see these close though so I don't know their lifetimes. All
I know is they lasted at least 5 mins.
This came about because I saw the connections still open after the
request had ended and was debugging to see why they were stuck open.
Never did figure out how to force them to close.
On Jan 20, 2009, at 9:45 PM, Michael Ash wrote:
*Do* *not* *make* *assumptions*.
You're making a huge assumption here:
A) NSURLConnections must be reused in order to have persistent HTTP
connections.
And then we have this simple fact:
B) There is no way to reuse an NSURLConnection.
Putting these two together, we have a conclusion:
C) NSURLConnection does not allow persistent HTTP connections.
Since conclusion C is pretty much absurd, it would follow that perhaps
assumption A is wrong.
But don't assume. *Test*. Write some code and then use a network
sniffer to see if, in fact, persistent connections are being used.
If you don't know how to use a sniffer, this is your golden
opportunity to learn. Doing network programming without a sniffer is
like doing carpentry without any eyes. A particularly talented person
might get astonishingly far without them, but he's still going to
suffer from a severe handicap relative to a person who can actually
see.
Above all, please don't come barging onto the mailing list asking
about a half-baked solution for a problem that you haven't even
verified the existence of.
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