Re: Why would CFReadStreamSetProperty return FALSE?
Re: Why would CFReadStreamSetProperty return FALSE?
- Subject: Re: Why would CFReadStreamSetProperty return FALSE?
- From: Martin Redington <email@hidden>
- Date: Sun, 22 Jan 2006 17:35:43 +0000
Hi Jeremy
On 1/22/06, Jeremy Wyld <email@hidden> wrote:
>
> On Jan 22, 2006, at 8:23 AM, Martin Redington wrote:
>
>
> I'm also using CFReadStreamSetProperty to set the
>
> kCFStreamPropertySocketSecurityLevel entry, and that works
> fine.
>
> I'm confused by this bit. Are you also calling this in addition to
> kCFStreamPropertySSLSettings?
yep. It did seem a little redundant, but the docs didn't say anything
about not setting both.
My code looks like this (although the new code checks the setProperty
return values.
CFTypeRef secLevel = (CFTypeRef) [sslProps objectForKey:(NSString
*)kCFStreamSSLLevel];
CFReadStreamSetProperty(readStreamRef,
kCFStreamPropertySocketSecurityLevel, secLevel);
CFWriteStreamSetProperty(writeStreamRef,
kCFStreamPropertySocketSecurityLevel, secLevel);
CFReadStreamSetProperty(readStreamRef, kCFStreamPropertySSLSettings, sslProps);
CFWriteStreamSetProperty(writeStreamRef, kCFStreamPropertySSLSettings,
sslProperties);
> There should be no threading issues associated with making these calls per
> se. Because you're making them from another thread, you always run a risk
> of not issuing the calls at the correct time unless your protocol has a
> mechanism to "know" when to do it.
The entire connection is being run in this thread, so I don't think
that's an issue (and my logging indicates that the sequencing is as
intended).
> You can always look at the CFSocketStream source.
> http://darwinsource.opendarwin.org/10.4/CFNetwork-128/Stream/CFSocketStream.c
>
> The functions that you're interested in are
> _SocketStreamSecuritySetContext_NoLock and
> _SocketStreamSecuritySetInfo_NoLock.
Thanks very much for the pointer. I'm just looking at
_SocketStreamSecuritySetInfo_NoLock now.
cheers,
Martin
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