[swift-corelibs-dev] Cannot call CFStreamCreatePairWithSocket on Linux

[Bouke Haarsma]

I'm running into the same issue as outlined in this post. Are there 
currently any plans on bringing CFNetwork to swift-corelibs? 

On 2016-03-15 15:07:15 +0000, Philippe Hausler via swift-corelibs-dev said:

> You are correct, those symbols are from CFNetwork which are not yet 
> implemented on linux targets. CFStream is implemented but 
> CFSocketStream is not implemented in swift-corelibs-foundation. It 
> could be technically reasonable to port the open source (very old) 
> CFNetwork to linux. However I am fairly certain that would take a bit 
> of work to get up and running; especially the Security framework 
> portions.
> 
> On Mar 15, 2016, at 7:54 AM, Pushkar N Kulkarni via swift-corelibs-dev 
> <swift-corelibs-dev at swift.org> wrote:
> 
> Hello all, 
> 
>  While attempting a simple Swift client-server program on Linux using 
> CFSocket, I tried to create CFReadStream and CFWriteStream instances 
> using CFStreamCreatePairWithSocket(_:_:_:_). The program compiles and 
> links but it crashes with this:
> 
> 2016-03-15 10:30:17.791 Client[21389:5a501740] CoreFoundation: failed 
> to dynamically link symbol _CFSocketStreamCreatePair
> 2016-03-15 10:30:17.791 Client[21389:5a501740] CoreFoundation: failed 
> to dynamically link symbol _CFErrorCreateWithStreamError
> 2016-03-15 10:30:17.791 Client[21389:5a501740] CoreFoundation: failed 
> to dynamically link symbol _CFStreamErrorFromCFError
> 
> 
> 
> 
> I see that these symbols are dynamically linked from CFNetwork which, I 
> guess, doesn't exist on Linux (so there is no lookup for these symbols 
> on Linux). 
> 
> Does this qualify to be a CFStream limitation on Linux?
> 
> Thanks in advance for your time!
> 
> Pushkar N Kulkarni,
> IBM Runtimes
> 
> Simplicity is prerequisite for reliability - Edsger W. Dijkstra
> 
> 
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-- 
-Bouke
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